Merge branch 'ux500/dt' into next/dt2

* ux500/dt:
  ARM: ux500: Provide local timer support for Device Tree
  ARM: ux500: Enable PL022 SSP Controller in Device Tree
  ARM: ux500: Enable PL310 Level 2 Cache Controller in Device Tree
  ARM: ux500: Enable PL011 AMBA UART Controller for Device Tree
  ARM: ux500: Enable Cortex-A9 GIC (Generic Interrupt Controller) in Device Tree
  ARM: ux500: db8500: list most devices in the snowball device tree
  ARM: ux500: split dts file for snowball into generic part
  ARM: ux500: combine the board init functions for DT boot
  ARM: ux500: Initial Device Tree support for Snowball
  ARM: ux500: CONFIG: Enable Device Tree support for future endeavours
  ARM: ux500: fix compilation after local timer rework

(adds dependency on localtimer branch, irqdomain branch and ux500/soc
branch)

Conflicts:
	arch/arm/mach-ux500/devices-common.c

This adds patches from Lee Jones, Niklas Hernaeus and myself to provide
initial device tree support on the ux500 platform. The pull request from
Lee contained some other changes, so I rebased the patches on top of
the branches that are actually dependencies for this.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

149 files changed, 2983 insertions, 1690 deletions

diff --git a/Documentation/ABI/testing/sysfs-devices-soc b/Documentation/ABI/testing/sysfs-devices-soc
new file mode 100644
index 00000000000..6d9cc253f2b
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-soc
@@ -0,0 +1,58 @@
+What:		/sys/devices/socX
+Date:		January 2012
+contact:	Lee Jones <lee.jones@linaro.org>
+Description:
+		The /sys/devices/ directory contains a sub-directory for each
+		System-on-Chip (SoC) device on a running platform. Information
+		regarding each SoC can be obtained by reading sysfs files. This
+		functionality is only available if implemented by the platform.
+
+		The directory created for each SoC will also house information
+		about devices which are commonly contained in /sys/devices/platform.
+		It has been agreed that if an SoC device exists, its supported
+		devices would be better suited to appear as children of that SoC.
+
+What:		/sys/devices/socX/machine
+Date:		January 2012
+contact:	Lee Jones <lee.jones@linaro.org>
+Description:
+		Read-only attribute common to all SoCs. Contains the SoC machine
+		name (e.g. Ux500).
+
+What:		/sys/devices/socX/family
+Date:		January 2012
+contact:	Lee Jones <lee.jones@linaro.org>
+Description:
+		Read-only attribute common to all SoCs. Contains SoC family name
+		(e.g. DB8500).
+
+What:		/sys/devices/socX/soc_id
+Date:		January 2012
+contact:	Lee Jones <lee.jones@linaro.org>
+Description:
+		Read-only attribute supported by most SoCs. In the case of
+		ST-Ericsson's chips this contains the SoC serial number.
+
+What:		/sys/devices/socX/revision
+Date:		January 2012
+contact:	Lee Jones <lee.jones@linaro.org>
+Description:
+		Read-only attribute supported by most SoCs. Contains the SoC's
+		manufacturing revision number.
+
+What:		/sys/devices/socX/process
+Date:		January 2012
+contact:	Lee Jones <lee.jones@linaro.org>
+Description:
+		Read-only attribute supported ST-Ericsson's silicon. Contains the
+		the process by which the silicon chip was manufactured.
+
+What:		/sys/bus/soc
+Date:		January 2012
+contact:	Lee Jones <lee.jones@linaro.org>
+Description:
+		The /sys/bus/soc/ directory contains the usual sub-folders
+		expected under most buses. /sys/bus/soc/devices is of particular
+		interest, as it contains a symlink for each SoC device found on
+		the system. Each symlink points back into the aforementioned
+		/sys/devices/socX devices.
diff --git a/Documentation/devicetree/bindings/arm/twd.txt b/Documentation/devicetree/bindings/arm/twd.txt
new file mode 100644
index 00000000000..75b8610939f
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/twd.txt
@@ -0,0 +1,48 @@
+* ARM Timer Watchdog
+
+ARM 11MP, Cortex-A5 and Cortex-A9 are often associated with a per-core
+Timer-Watchdog (aka TWD), which provides both a per-cpu local timer
+and watchdog.
+
+The TWD is usually attached to a GIC to deliver its two per-processor
+interrupts.
+
+** Timer node required properties:
+
+- compatible : Should be one of:
+	"arm,cortex-a9-twd-timer"
+	"arm,cortex-a5-twd-timer"
+	"arm,arm11mp-twd-timer"
+
+- interrupts : One interrupt to each core
+
+- reg : Specify the base address and the size of the TWD timer
+	register window.
+
+Example:
+
+	twd-timer@2c000600 {
+		compatible = "arm,arm11mp-twd-timer"";
+		reg = <0x2c000600 0x20>;
+		interrupts = <1 13 0xf01>;
+	};
+
+** Watchdog node properties:
+
+- compatible : Should be one of:
+	"arm,cortex-a9-twd-wdt"
+	"arm,cortex-a5-twd-wdt"
+	"arm,arm11mp-twd-wdt"
+
+- interrupts : One interrupt to each core
+
+- reg : Specify the base address and the size of the TWD watchdog
+	register window.
+
+Example:
+
+	twd-watchdog@2c000620 {
+		compatible = "arm,arm11mp-twd-wdt";
+		reg = <0x2c000620 0x20>;
+		interrupts = <1 14 0xf01>;
+	};
diff --git a/Documentation/dynamic-debug-howto.txt b/Documentation/dynamic-debug-howto.txt
index f959909d715..74e6c778267 100644
--- a/Documentation/dynamic-debug-howto.txt
+++ b/Documentation/dynamic-debug-howto.txt
@@ -12,7 +12,7 @@ dynamically enabled per-callsite.
 Dynamic debug has even more useful features:
 
  * Simple query language allows turning on and off debugging statements by
-   matching any combination of:
+   matching any combination of 0 or 1 of:
 
    - source filename
    - function name
@@ -79,31 +79,24 @@ Command Language Reference
 ==========================
 
 At the lexical level, a command comprises a sequence of words separated
-by whitespace characters.  Note that newlines are treated as word
-separators and do *not* end a command or allow multiple commands to
-be done together.  So these are all equivalent:
+by spaces or tabs.  So these are all equivalent:
 
 nullarbor:~ # echo -c 'file svcsock.c line 1603 +p' >
 				<debugfs>/dynamic_debug/control
 nullarbor:~ # echo -c '  file   svcsock.c     line  1603 +p  ' >
 				<debugfs>/dynamic_debug/control
-nullarbor:~ # echo -c 'file svcsock.c\nline 1603 +p' >
-				<debugfs>/dynamic_debug/control
 nullarbor:~ # echo -n 'file svcsock.c line 1603 +p' >
 				<debugfs>/dynamic_debug/control
 
-Commands are bounded by a write() system call.  If you want to do
-multiple commands you need to do a separate "echo" for each, like:
+Command submissions are bounded by a write() system call.
+Multiple commands can be written together, separated by ';' or '\n'.
 
-nullarbor:~ # echo 'file svcsock.c line 1603 +p' > /proc/dprintk ;\
-> echo 'file svcsock.c line 1563 +p' > /proc/dprintk
+  ~# echo "func pnpacpi_get_resources +p; func pnp_assign_mem +p" \
+     > <debugfs>/dynamic_debug/control
 
-or even like:
+If your query set is big, you can batch them too:
 
-nullarbor:~ # (
-> echo 'file svcsock.c line 1603 +p' ;\
-> echo 'file svcsock.c line 1563 +p' ;\
-> ) > /proc/dprintk
+  ~# cat query-batch-file > <debugfs>/dynamic_debug/control
 
 At the syntactical level, a command comprises a sequence of match
 specifications, followed by a flags change specification.
@@ -144,11 +137,12 @@ func
     func svc_tcp_accept
 
 file
-    The given string is compared against either the full
-    pathname or the basename of the source file of each
-    callsite.  Examples:
+    The given string is compared against either the full pathname, the
+    src-root relative pathname, or the basename of the source file of
+    each callsite.  Examples:
 
     file svcsock.c
+    file kernel/freezer.c
     file /usr/src/packages/BUILD/sgi-enhancednfs-1.4/default/net/sunrpc/svcsock.c
 
 module
diff --git a/Documentation/filesystems/debugfs.txt b/Documentation/filesystems/debugfs.txt
index 6872c91bce3..4e257587318 100644
--- a/Documentation/filesystems/debugfs.txt
+++ b/Documentation/filesystems/debugfs.txt
@@ -14,7 +14,10 @@ Debugfs is typically mounted with a command like:
 
     mount -t debugfs none /sys/kernel/debug
 
-(Or an equivalent /etc/fstab line). 
+(Or an equivalent /etc/fstab line).
+The debugfs root directory is accessible by anyone by default. To
+restrict access to the tree the "uid", "gid" and "mode" mount
+options can be used.
 
 Note that the debugfs API is exported GPL-only to modules.
 
diff --git a/arch/arm/boot/dts/db8500.dtsi b/arch/arm/boot/dts/db8500.dtsi
new file mode 100644
index 00000000000..d73dce64566
--- /dev/null
+++ b/arch/arm/boot/dts/db8500.dtsi
@@ -0,0 +1,275 @@
+/*
+ * Copyright 2012 Linaro Ltd
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/include/ "skeleton.dtsi"
+
+/ {
+	soc-u9500 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "stericsson,db8500";
+		interrupt-parent = <&intc>;
+		ranges;
+
+		intc: interrupt-controller@a0411000 {
+			compatible = "arm,cortex-a9-gic";
+			#interrupt-cells = <3>;
+			#address-cells = <1>;
+			interrupt-controller;
+			interrupt-parent;
+			reg = <0xa0411000 0x1000>,
+			      <0xa0410100 0x100>;
+		};
+
+		L2: l2-cache {
+			compatible = "arm,pl310-cache";
+			reg = <0xa0412000 0x1000>;
+			interrupts = <0 13 4>;
+			cache-unified;
+			cache-level = <2>;
+		};
+
+		pmu {
+			compatible = "arm,cortex-a9-pmu";
+			interrupts = <0 7 0x4>;
+		};
+
+		timer@a0410600 {
+			compatible = "arm,cortex-a9-twd-timer";
+			reg = <0xa0410600 0x20>;
+			interrupts = <1 13 0x304>;
+		};
+
+		rtc@80154000 {
+			compatible = "stericsson,db8500-rtc";
+			reg = <0x80154000 0x1000>;
+			interrupts = <0 18 0x4>;
+		};
+
+		gpio0: gpio@8012e000 {
+			compatible = "stericsson,db8500-gpio",
+				"stmicroelectronics,nomadik-gpio";
+			reg =  <0x8012e000 0x80>;
+			interrupts = <0 119 0x4>;
+			supports-sleepmode;
+			gpio-controller;
+		};
+
+		gpio1: gpio@8012e080 {
+			compatible = "stericsson,db8500-gpio",
+				"stmicroelectronics,nomadik-gpio";
+			reg =  <0x8012e080 0x80>;
+			interrupts = <0 120 0x4>;
+			supports-sleepmode;
+			gpio-controller;
+		};
+
+		gpio2: gpio@8000e000 {
+			compatible = "stericsson,db8500-gpio",
+				"stmicroelectronics,nomadik-gpio";
+			reg =  <0x8000e000 0x80>;
+			interrupts = <0 121 0x4>;
+			supports-sleepmode;
+			gpio-controller;
+		};
+
+		gpio3: gpio@8000e080 {
+			compatible = "stericsson,db8500-gpio",
+				"stmicroelectronics,nomadik-gpio";
+			reg =  <0x8000e080 0x80>;
+			interrupts = <0 122 0x4>;
+			supports-sleepmode;
+			gpio-controller;
+		};
+
+		gpio4: gpio@8000e100 {
+			compatible = "stericsson,db8500-gpio",
+				"stmicroelectronics,nomadik-gpio";
+			reg =  <0x8000e100 0x80>;
+			interrupts = <0 123 0x4>;
+			supports-sleepmode;
+			gpio-controller;
+		};
+
+		gpio5: gpio@8000e180 {
+			compatible = "stericsson,db8500-gpio",
+				"stmicroelectronics,nomadik-gpio";
+			reg =  <0x8000e180 0x80>;
+			interrupts = <0 124 0x4>;
+			supports-sleepmode;
+			gpio-controller;
+		};
+
+		gpio6: gpio@8011e000 {
+			compatible = "stericsson,db8500-gpio",
+				"stmicroelectronics,nomadik-gpio";
+			reg =  <0x8011e000 0x80>;
+			interrupts = <0 125 0x4>;
+			supports-sleepmode;
+			gpio-controller;
+		};
+
+		gpio7: gpio@8011e080 {
+			compatible = "stericsson,db8500-gpio",
+				"stmicroelectronics,nomadik-gpio";
+			reg =  <0x8011e080 0x80>;
+			interrupts = <0 126 0x4>;
+			supports-sleepmode;
+			gpio-controller;
+		};
+
+		gpio8: gpio@a03fe000 {
+			compatible = "stericsson,db8500-gpio",
+				"stmicroelectronics,nomadik-gpio";
+			reg =  <0xa03fe000 0x80>;
+			interrupts = <0 127 0x4>;
+			supports-sleepmode;
+			gpio-controller;
+		};
+
+		usb@a03e0000 {
+			compatible = "stericsson,db8500-musb",
+				"mentor,musb";
+			reg = <0xa03e0000 0x10000>;
+			interrupts = <0 23 0x4>;
+		};
+
+		dma-controller@801C0000 {
+			compatible = "stericsson,db8500-dma40",
+					"stericsson,dma40";
+			reg = <0x801C0000 0x1000 0x40010000 0x800>;
+			interrupts = <0 25 0x4>;
+		};
+
+		prcmu@80157000 {
+			compatible = "stericsson,db8500-prcmu";
+			reg = <0x80157000 0x1000>;
+			interrupts = <46 47>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			ab8500@5 {
+				compatible = "stericsson,ab8500";
+				reg = <5>; /* mailbox 5 is i2c */
+				interrupts = <0 40 0x4>;
+			};
+		};
+
+		i2c@80004000 {
+			compatible = "stericsson,db8500-i2c", "stmicroelectronics,nomadik-i2c";
+			reg = <0x80004000 0x1000>;
+			interrupts = <0 21 0x4>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+
+		i2c@80122000 {
+			compatible = "stericsson,db8500-i2c", "stmicroelectronics,nomadik-i2c";
+			reg = <0x80122000 0x1000>;
+			interrupts = <0 22 0x4>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+
+		i2c@80128000 {
+			compatible = "stericsson,db8500-i2c", "stmicroelectronics,nomadik-i2c";
+			reg = <0x80128000 0x1000>;
+			interrupts = <0 55 0x4>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+
+		i2c@80110000 {
+			compatible = "stericsson,db8500-i2c", "stmicroelectronics,nomadik-i2c";
+			reg = <0x80110000 0x1000>;
+			interrupts = <0 12 0x4>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+
+		i2c@8012a000 {
+			compatible = "stericsson,db8500-i2c", "stmicroelectronics,nomadik-i2c";
+			reg = <0x8012a000 0x1000>;
+			interrupts = <0 51 0x4>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+
+		ssp@80002000 {
+			compatible = "arm,pl022", "arm,primecell";
+			reg = <80002000 0x1000>;
+			interrupts = <0 14 0x4>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+
+			// Add one of these for each child device
+			cs-gpios = <&gpio0 31 &gpio4 14 &gpio4 16 &gpio6 22 &gpio7 0>;
+
+		};
+
+		uart@80120000 {
+			compatible = "arm,pl011", "arm,primecell";
+			reg = <0x80120000 0x1000>;
+			interrupts = <0 11 0x4>;
+			status = "disabled";
+		};
+		uart@80121000 {
+			compatible = "arm,pl011", "arm,primecell";
+			reg = <0x80121000 0x1000>;
+			interrupts = <0 19 0x4>;
+			status = "disabled";
+		};
+		uart@80007000 {
+			compatible = "arm,pl011", "arm,primecell";
+			reg = <0x80007000 0x1000>;
+			interrupts = <0 26 0x4>;
+			status = "disabled";
+		};
+
+		sdi@80126000 {
+			compatible = "arm,pl18x", "arm,primecell";
+			reg = <0x80126000 0x1000>;
+			interrupts = <0 60 0x4>;
+			status = "disabled";
+		};
+		sdi@80118000 {
+			compatible = "arm,pl18x", "arm,primecell";
+			reg = <0x80118000 0x1000>;
+			interrupts = <0 50 0x4>;
+			status = "disabled";
+		};
+		sdi@80005000 {
+			compatible = "arm,pl18x", "arm,primecell";
+			reg = <0x80005000 0x1000>;
+			interrupts = <0 41 0x4>;
+			status = "disabled";
+		};
+		sdi@80119000 {
+			compatible = "arm,pl18x", "arm,primecell";
+			reg = <0x80119000 0x1000>;
+			interrupts = <0 59 0x4>;
+			status = "disabled";
+		};
+		sdi@80114000 {
+			compatible = "arm,pl18x", "arm,primecell";
+			reg = <0x80114000 0x1000>;
+			interrupts = <0 99 0x4>;
+			status = "disabled";
+		};
+		sdi@80008000 {
+			compatible = "arm,pl18x", "arm,primecell";
+			reg = <0x80114000 0x1000>;
+			interrupts = <0 100 0x4>;
+			status = "disabled";
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/highbank.dts b/arch/arm/boot/dts/highbank.dts
index 305635bd45c..37c0ff9c8b9 100644
--- a/arch/arm/boot/dts/highbank.dts
+++ b/arch/arm/boot/dts/highbank.dts
@@ -72,15 +72,15 @@
 		ranges;
 
 		timer@fff10600 {
-			compatible = "arm,smp-twd";
+			compatible = "arm,cortex-a9-twd-timer";
 			reg = <0xfff10600 0x20>;
-			interrupts = <1 13 0xf04>;
+			interrupts = <1 13 0xf01>;
 		};
 
 		watchdog@fff10620 {
-			compatible = "arm,cortex-a9-wdt";
+			compatible = "arm,cortex-a9-twd-wdt";
 			reg = <0xfff10620 0x20>;
-			interrupts = <1 14 0xf04>;
+			interrupts = <1 14 0xf01>;
 		};
 
 		intc: interrupt-controller@fff11000 {
diff --git a/arch/arm/boot/dts/imx6q.dtsi b/arch/arm/boot/dts/imx6q.dtsi
index 263e8f3664b..4905f51a106 100644
--- a/arch/arm/boot/dts/imx6q.dtsi
+++ b/arch/arm/boot/dts/imx6q.dtsi
@@ -88,9 +88,9 @@
 		ranges;
 
 		timer@00a00600 {
-			compatible = "arm,smp-twd";
-			reg = <0x00a00600 0x100>;
-			interrupts = <1 13 0xf4>;
+			compatible = "arm,cortex-a9-twd-timer";
+			reg = <0x00a00600 0x20>;
+			interrupts = <1 13 0xf01>;
 		};
 
 		L2: l2-cache@00a02000 {
diff --git a/arch/arm/boot/dts/snowball.dts b/arch/arm/boot/dts/snowball.dts
new file mode 100644
index 00000000000..359c6d67915
--- /dev/null
+++ b/arch/arm/boot/dts/snowball.dts
@@ -0,0 +1,139 @@
+/*
+ * Copyright 2011 ST-Ericsson AB
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/dts-v1/;
+/include/ "db8500.dtsi"
+
+/ {
+	model = "Calao Systems Snowball platform with device tree";
+	compatible = "calaosystems,snowball-a9500";
+
+	memory {
+		reg = <0x00000000 0x20000000>;
+	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		button@1 {
+			debounce_interval = <50>;
+			wakeup = <1>;
+			linux,code = <2>;
+			label = "userpb";
+			gpios = <&gpio1 0>;
+		};
+		button@2 {
+			debounce_interval = <50>;
+			wakeup = <1>;
+			linux,code = <3>;
+			label = "userpb";
+			gpios = <&gpio4 23>;
+		};
+		button@3 {
+			debounce_interval = <50>;
+			wakeup = <1>;
+			linux,code = <4>;
+			label = "userpb";
+			gpios = <&gpio4 23>;
+		};
+		button@4 {
+			debounce_interval = <50>;
+			wakeup = <1>;
+			linux,code = <5>;
+			label = "userpb";
+			gpios = <&gpio5 1>;
+		};
+		button@5 {
+			debounce_interval = <50>;
+			wakeup = <1>;
+			linux,code = <6>;
+			label = "userpb";
+			gpios = <&gpio5 2>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		used-led {
+			label = "user_led";
+			gpios = <&gpio4 14>;
+		};
+	};
+
+	soc-u9500 {
+
+		external-bus@50000000 {
+			compatible = "simple-bus";
+			reg = <0x50000000 0x10000000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+
+			ethernet@50000000 {
+				compatible = "smsc,9111";
+				reg = <0x50000000 0x10000>;
+				interrupts = <12>;
+				interrupt-parent = <&gpio4>;
+			};
+		};
+
+		sdi@80126000 {
+			status = "enabled";
+			cd-gpios = <&gpio6 26>;
+		};
+
+		sdi@80114000 {
+			status = "enabled";
+		};
+
+		uart@80120000 {
+			status = "okay";
+		};
+
+		uart@80121000 {
+			status = "okay";
+		};
+
+		uart@80007000 {
+			status = "okay";
+		};
+
+		i2c@80004000 {
+			tc3589x@42 {
+				//compatible = "tc3589x";
+				reg = <0x42>;
+				interrupts = <25>;
+				interrupt-parent = <&gpio6>;
+			};
+			tps61052@33 {
+				//compatible = "tps61052";
+				reg = <0x33>;
+			};
+		};
+
+		i2c@80128000 {
+			lp5521@0x33 {
+				// compatible = "lp5521";
+				reg = <0x33>;
+			};
+			lp5521@0x34 {
+				// compatible = "lp5521";
+				reg = <0x34>;
+			};
+			bh1780@0x29 {
+				// compatible = "rohm,bh1780gli";
+				reg = <0x33>;
+			};
+		};
+	};
+};
diff --git a/arch/arm/configs/u8500_defconfig b/arch/arm/configs/u8500_defconfig
index 2d7b6e7b727..889d73ac1ae 100644
--- a/arch/arm/configs/u8500_defconfig
+++ b/arch/arm/configs/u8500_defconfig
@@ -13,6 +13,7 @@ CONFIG_UX500_SOC_DB8500=y
 CONFIG_MACH_HREFV60=y
 CONFIG_MACH_SNOWBALL=y
 CONFIG_MACH_U5500=y
+CONFIG_MACH_UX500_DT=y
 CONFIG_NO_HZ=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_SMP=y
diff --git a/arch/arm/include/asm/localtimer.h b/arch/arm/include/asm/localtimer.h
index c6a18424888..f77ffc1eb0c 100644
--- a/arch/arm/include/asm/localtimer.h
+++ b/arch/arm/include/asm/localtimer.h
@@ -11,47 +11,24 @@
 #define __ASM_ARM_LOCALTIMER_H
 
 #include <linux/errno.h>
-#include <linux/interrupt.h>
 
 struct clock_event_device;
 
-/*
- * Setup a per-cpu timer, whether it be a local timer or dummy broadcast
- */
-void percpu_timer_setup(void);
+struct local_timer_ops {
+	int  (*setup)(struct clock_event_device *);
+	void (*stop)(struct clock_event_device *);
+};
 
 #ifdef CONFIG_LOCAL_TIMERS
-
-#ifdef CONFIG_HAVE_ARM_TWD
-
-#include "smp_twd.h"
-
-#define local_timer_stop(c)	twd_timer_stop((c))
-
-#else
-
-/*
- * Stop the local timer
- */
-void local_timer_stop(struct clock_event_device *);
-
-#endif
-
 /*
- * Setup a local timer interrupt for a CPU.
+ * Register a local timer driver
  */
-int local_timer_setup(struct clock_event_device *);
-
+int local_timer_register(struct local_timer_ops *);
 #else
-
-static inline int local_timer_setup(struct clock_event_device *evt)
+static inline int local_timer_register(struct local_timer_ops *ops)
 {
 	return -ENXIO;
 }
-
-static inline void local_timer_stop(struct clock_event_device *evt)
-{
-}
 #endif
 
 #endif
diff --git a/arch/arm/include/asm/smp_twd.h b/arch/arm/include/asm/smp_twd.h
index ef9ffba97ad..0f01f4677bd 100644
--- a/arch/arm/include/asm/smp_twd.h
+++ b/arch/arm/include/asm/smp_twd.h
@@ -18,11 +18,28 @@
 #define TWD_TIMER_CONTROL_PERIODIC	(1 << 1)
 #define TWD_TIMER_CONTROL_IT_ENABLE	(1 << 2)
 
-struct clock_event_device;
+#include <linux/ioport.h>
 
-extern void __iomem *twd_base;
+struct twd_local_timer {
+	struct resource	res[2];
+};
 
-void twd_timer_setup(struct clock_event_device *);
-void twd_timer_stop(struct clock_event_device *);
+#define DEFINE_TWD_LOCAL_TIMER(name,base,irq)	\
+struct twd_local_timer name __initdata = {	\
+	.res	= {				\
+		DEFINE_RES_MEM(base, 0x10),	\
+		DEFINE_RES_IRQ(irq),		\
+	},					\
+};
+
+int twd_local_timer_register(struct twd_local_timer *);
+
+#ifdef CONFIG_HAVE_ARM_TWD
+void twd_local_timer_of_register(void);
+#else
+static inline void twd_local_timer_of_register(void)
+{
+}
+#endif
 
 #endif
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index cdeb727527d..1ad84a6c9bf 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -246,6 +246,8 @@ static void __cpuinit smp_store_cpu_info(unsigned int cpuid)
 	store_cpu_topology(cpuid);
 }
 
+static void percpu_timer_setup(void);
+
 /*
  * This is the secondary CPU boot entry.  We're using this CPUs
  * idle thread stack, but a set of temporary page tables.
@@ -459,7 +461,20 @@ static void __cpuinit broadcast_timer_setup(struct clock_event_device *evt)
 	clockevents_register_device(evt);
 }
 
-void __cpuinit percpu_timer_setup(void)
+static struct local_timer_ops *lt_ops;
+
+#ifdef CONFIG_LOCAL_TIMERS
+int local_timer_register(struct local_timer_ops *ops)
+{
+	if (lt_ops)
+		return -EBUSY;
+
+	lt_ops = ops;
+	return 0;
+}
+#endif
+
+static void __cpuinit percpu_timer_setup(void)
 {
 	unsigned int cpu = smp_processor_id();
 	struct clock_event_device *evt = &per_cpu(percpu_clockevent, cpu);
@@ -467,7 +482,7 @@ void __cpuinit percpu_timer_setup(void)
 	evt->cpumask = cpumask_of(cpu);
 	evt->broadcast = smp_timer_broadcast;
 
-	if (local_timer_setup(evt))
+	if (!lt_ops || lt_ops->setup(evt))
 		broadcast_timer_setup(evt);
 }
 
@@ -482,7 +497,8 @@ static void percpu_timer_stop(void)
 	unsigned int cpu = smp_processor_id();
 	struct clock_event_device *evt = &per_cpu(percpu_clockevent, cpu);
 
-	local_timer_stop(evt);
+	if (lt_ops)
+		lt_ops->stop(evt);
 }
 #endif
 
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
index 7a79b24597b..fef42b21cec 100644
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -18,20 +18,23 @@
 #include <linux/smp.h>
 #include <linux/jiffies.h>
 #include <linux/clockchips.h>
-#include <linux/irq.h>
+#include <linux/interrupt.h>
 #include <linux/io.h>
+#include <linux/of_irq.h>
+#include <linux/of_address.h>
 
 #include <asm/smp_twd.h>
 #include <asm/localtimer.h>
 #include <asm/hardware/gic.h>
 
 /* set up by the platform code */
-void __iomem *twd_base;
+static void __iomem *twd_base;
 
 static struct clk *twd_clk;
 static unsigned long twd_timer_rate;
 
 static struct clock_event_device __percpu **twd_evt;
+static int twd_ppi;
 
 static void twd_set_mode(enum clock_event_mode mode,
 			struct clock_event_device *clk)
@@ -77,7 +80,7 @@ static int twd_set_next_event(unsigned long evt,
  * If a local timer interrupt has occurred, acknowledge and return 1.
  * Otherwise, return 0.
  */
-int twd_timer_ack(void)
+static int twd_timer_ack(void)
 {
 	if (__raw_readl(twd_base + TWD_TIMER_INTSTAT)) {
 		__raw_writel(1, twd_base + TWD_TIMER_INTSTAT);
@@ -87,7 +90,7 @@ int twd_timer_ack(void)
 	return 0;
 }
 
-void twd_timer_stop(struct clock_event_device *clk)
+static void twd_timer_stop(struct clock_event_device *clk)
 {
 	twd_set_mode(CLOCK_EVT_MODE_UNUSED, clk);
 	disable_percpu_irq(clk->irq);
@@ -222,28 +225,10 @@ static struct clk *twd_get_clock(void)
 /*
  * Setup the local clock events for a CPU.
  */
-void __cpuinit twd_timer_setup(struct clock_event_device *clk)
+static int __cpuinit twd_timer_setup(struct clock_event_device *clk)
 {
 	struct clock_event_device **this_cpu_clk;
 
-	if (!twd_evt) {
-		int err;
-
-		twd_evt = alloc_percpu(struct clock_event_device *);
-		if (!twd_evt) {
-			pr_err("twd: can't allocate memory\n");
-			return;
-		}
-
-		err = request_percpu_irq(clk->irq, twd_handler,
-					 "twd", twd_evt);
-		if (err) {
-			pr_err("twd: can't register interrupt %d (%d)\n",
-			       clk->irq, err);
-			return;
-		}
-	}
-
 	if (!twd_clk)
 		twd_clk = twd_get_clock();
 
@@ -260,6 +245,7 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk)
 	clk->rating = 350;
 	clk->set_mode = twd_set_mode;
 	clk->set_next_event = twd_set_next_event;
+	clk->irq = twd_ppi;
 
 	this_cpu_clk = __this_cpu_ptr(twd_evt);
 	*this_cpu_clk = clk;
@@ -267,4 +253,95 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk)
 	clockevents_config_and_register(clk, twd_timer_rate,
 					0xf, 0xffffffff);
 	enable_percpu_irq(clk->irq, 0);
+
+	return 0;
+}
+
+static struct local_timer_ops twd_lt_ops __cpuinitdata = {
+	.setup	= twd_timer_setup,
+	.stop	= twd_timer_stop,
+};
+
+static int __init twd_local_timer_common_register(void)
+{
+	int err;
+
+	twd_evt = alloc_percpu(struct clock_event_device *);
+	if (!twd_evt) {
+		err = -ENOMEM;
+		goto out_free;
+	}
+
+	err = request_percpu_irq(twd_ppi, twd_handler, "twd", twd_evt);
+	if (err) {
+		pr_err("twd: can't register interrupt %d (%d)\n", twd_ppi, err);
+		goto out_free;
+	}
+
+	err = local_timer_register(&twd_lt_ops);
+	if (err)
+		goto out_irq;
+
+	return 0;
+
+out_irq:
+	free_percpu_irq(twd_ppi, twd_evt);
+out_free:
+	iounmap(twd_base);
+	twd_base = NULL;
+	free_percpu(twd_evt);
+
+	return err;
 }
+
+int __init twd_local_timer_register(struct twd_local_timer *tlt)
+{
+	if (twd_base || twd_evt)
+		return -EBUSY;
+
+	twd_ppi	= tlt->res[1].start;
+
+	twd_base = ioremap(tlt->res[0].start, resource_size(&tlt->res[0]));
+	if (!twd_base)
+		return -ENOMEM;
+
+	return twd_local_timer_common_register();
+}
+
+#ifdef CONFIG_OF
+const static struct of_device_id twd_of_match[] __initconst = {
+	{ .compatible = "arm,cortex-a9-twd-timer",	},
+	{ .compatible = "arm,cortex-a5-twd-timer",	},
+	{ .compatible = "arm,arm11mp-twd-timer",	},
+	{ },
+};
+
+void __init twd_local_timer_of_register(void)
+{
+	struct device_node *np;
+	int err;
+
+	np = of_find_matching_node(NULL, twd_of_match);
+	if (!np) {
+		err = -ENODEV;
+		goto out;
+	}
+
+	twd_ppi = irq_of_parse_and_map(np, 0);
+	if (!twd_ppi) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	twd_base = of_iomap(np, 0);
+	if (!twd_base) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	err = twd_local_timer_common_register();
+
+out:
+	WARN(err, "twd_local_timer_of_register failed (%d)\n", err);
+}
+#endif
diff --git a/arch/arm/mach-exynos/mct.c b/arch/arm/mach-exynos/mct.c
index 85b5527d091..edc4b9488f2 100644
--- a/arch/arm/mach-exynos/mct.c
+++ b/arch/arm/mach-exynos/mct.c
@@ -21,6 +21,7 @@
 #include <linux/percpu.h>
 
 #include <asm/hardware/gic.h>
+#include <asm/localtimer.h>
 
 #include <plat/cpu.h>
 
@@ -375,7 +376,7 @@ static struct irqaction mct_tick1_event_irq = {
 	.handler	= exynos4_mct_tick_isr,
 };
 
-static void exynos4_mct_tick_init(struct clock_event_device *evt)
+static int __cpuinit exynos4_local_timer_setup(struct clock_event_device *evt)
 {
 	struct mct_clock_event_device *mevt;
 	unsigned int cpu = smp_processor_id();
@@ -417,17 +418,11 @@ static void exynos4_mct_tick_init(struct clock_event_device *evt)
 	} else {
 		enable_percpu_irq(IRQ_MCT_LOCALTIMER, 0);
 	}
-}
-
-/* Setup the local clock events for a CPU */
-int __cpuinit local_timer_setup(struct clock_event_device *evt)
-{
-	exynos4_mct_tick_init(evt);
 
 	return 0;
 }
 
-void local_timer_stop(struct clock_event_device *evt)
+static void exynos4_local_timer_stop(struct clock_event_device *evt)
 {
 	unsigned int cpu = smp_processor_id();
 	evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt);
@@ -439,6 +434,11 @@ void local_timer_stop(struct clock_event_device *evt)
 	else
 		disable_percpu_irq(IRQ_MCT_LOCALTIMER);
 }
+
+static struct local_timer_ops exynos4_mct_tick_ops __cpuinitdata = {
+	.setup	= exynos4_local_timer_setup,
+	.stop	= exynos4_local_timer_stop,
+};
 #endif /* CONFIG_LOCAL_TIMERS */
 
 static void __init exynos4_timer_resources(void)
@@ -458,6 +458,8 @@ static void __init exynos4_timer_resources(void)
 		WARN(err, "MCT: can't request IRQ %d (%d)\n",
 		     IRQ_MCT_LOCALTIMER, err);
 	}
+
+	local_timer_register(&exynos4_mct_tick_ops);
 #endif /* CONFIG_LOCAL_TIMERS */
 }
 
diff --git a/arch/arm/mach-highbank/Makefile b/arch/arm/mach-highbank/Makefile
index 986958a5a72..f8437dd238c 100644
--- a/arch/arm/mach-highbank/Makefile
+++ b/arch/arm/mach-highbank/Makefile
@@ -1,6 +1,5 @@
 obj-y					:= clock.o highbank.o system.o
 obj-$(CONFIG_DEBUG_HIGHBANK_UART)	+= lluart.o
 obj-$(CONFIG_SMP)			+= platsmp.o
-obj-$(CONFIG_LOCAL_TIMERS)		+= localtimer.o
 obj-$(CONFIG_HOTPLUG_CPU)		+= hotplug.o
 obj-$(CONFIG_PM_SLEEP)			+= pm.o
diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c
index 8394d512a40..bb1684f9b68 100644
--- a/arch/arm/mach-highbank/highbank.c
+++ b/arch/arm/mach-highbank/highbank.c
@@ -27,6 +27,7 @@
 #include <asm/cacheflush.h>
 #include <asm/smp_plat.h>
 #include <asm/smp_scu.h>
+#include <asm/smp_twd.h>
 #include <asm/hardware/arm_timer.h>
 #include <asm/hardware/timer-sp.h>
 #include <asm/hardware/gic.h>
@@ -111,6 +112,8 @@ static void __init highbank_timer_init(void)
 
 	sp804_clocksource_init(timer_base + 0x20, "timer1");
 	sp804_clockevents_init(timer_base, irq, "timer0");
+
+	twd_local_timer_of_register();
 }
 
 static struct sys_timer highbank_timer = {
diff --git a/arch/arm/mach-highbank/localtimer.c b/arch/arm/mach-highbank/localtimer.c
deleted file mode 100644
index 5a00e7945fd..00000000000
--- a/arch/arm/mach-highbank/localtimer.c
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright 2010-2011 Calxeda, Inc.
- * Based on localtimer.c, Copyright (C) 2002 ARM Ltd.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-#include <linux/init.h>
-#include <linux/clockchips.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-
-#include <asm/smp_twd.h>
-
-/*
- * Setup the local clock events for a CPU.
- */
-int __cpuinit local_timer_setup(struct clock_event_device *evt)
-{
-	struct device_node *np;
-
-	np = of_find_compatible_node(NULL, NULL, "arm,smp-twd");
-	if (!twd_base) {
-		twd_base = of_iomap(np, 0);
-		WARN_ON(!twd_base);
-	}
-	evt->irq = irq_of_parse_and_map(np, 0);
-	twd_timer_setup(evt);
-	return 0;
-}
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 4ffeca7ee25..8f57daf5e79 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -72,7 +72,6 @@ obj-$(CONFIG_CPU_V7) += head-v7.o
 AFLAGS_head-v7.o :=-Wa,-march=armv7-a
 obj-$(CONFIG_SMP) += platsmp.o
 obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
-obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o
 obj-$(CONFIG_SOC_IMX6Q) += clock-imx6q.o mach-imx6q.o
 
 ifeq ($(CONFIG_PM),y)
diff --git a/arch/arm/mach-imx/localtimer.c b/arch/arm/mach-imx/localtimer.c
deleted file mode 100644
index 3a163515d41..00000000000
--- a/arch/arm/mach-imx/localtimer.c
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Copyright 2011 Freescale Semiconductor, Inc.
- * Copyright 2011 Linaro Ltd.
- *
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 or later at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-#include <linux/init.h>
-#include <linux/clockchips.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <asm/smp_twd.h>
-
-/*
- * Setup the local clock events for a CPU.
- */
-int __cpuinit local_timer_setup(struct clock_event_device *evt)
-{
-	struct device_node *np;
-
-	np = of_find_compatible_node(NULL, NULL, "arm,smp-twd");
-	if (!twd_base) {
-		twd_base = of_iomap(np, 0);
-		WARN_ON(!twd_base);
-	}
-	evt->irq = irq_of_parse_and_map(np, 0);
-	twd_timer_setup(evt);
-
-	return 0;
-}
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 379b1a9cd22..7696dfa2bdb 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -21,6 +21,7 @@
 #include <linux/of_platform.h>
 #include <linux/phy.h>
 #include <linux/micrel_phy.h>
+#include <asm/smp_twd.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/hardware/gic.h>
 #include <asm/mach/arch.h>
@@ -120,6 +121,7 @@ static void __init imx6q_init_irq(void)
 static void __init imx6q_timer_init(void)
 {
 	mx6q_clocks_init();
+	twd_local_timer_of_register();
 }
 
 static struct sys_timer imx6q_timer = {
diff --git a/arch/arm/mach-msm/timer.c b/arch/arm/mach-msm/timer.c
index 11d0d8f2656..75f4be40b3e 100644
--- a/arch/arm/mach-msm/timer.c
+++ b/arch/arm/mach-msm/timer.c
@@ -127,6 +127,45 @@ static struct clocksource msm_clocksource = {
 	.flags	= CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
+#ifdef CONFIG_LOCAL_TIMERS
+static int __cpuinit msm_local_timer_setup(struct clock_event_device *evt)
+{
+	/* Use existing clock_event for cpu 0 */
+	if (!smp_processor_id())
+		return 0;
+
+	writel_relaxed(0, event_base + TIMER_ENABLE);
+	writel_relaxed(0, event_base + TIMER_CLEAR);
+	writel_relaxed(~0, event_base + TIMER_MATCH_VAL);
+	evt->irq = msm_clockevent.irq;
+	evt->name = "local_timer";
+	evt->features = msm_clockevent.features;
+	evt->rating = msm_clockevent.rating;
+	evt->set_mode = msm_timer_set_mode;
+	evt->set_next_event = msm_timer_set_next_event;
+	evt->shift = msm_clockevent.shift;
+	evt->mult = div_sc(GPT_HZ, NSEC_PER_SEC, evt->shift);
+	evt->max_delta_ns = clockevent_delta2ns(0xf0000000, evt);
+	evt->min_delta_ns = clockevent_delta2ns(4, evt);
+
+	*__this_cpu_ptr(msm_evt.percpu_evt) = evt;
+	clockevents_register_device(evt);
+	enable_percpu_irq(evt->irq, 0);
+	return 0;
+}
+
+static void msm_local_timer_stop(struct clock_event_device *evt)
+{
+	evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt);
+	disable_percpu_irq(evt->irq);
+}
+
+static struct local_timer_ops msm_local_timer_ops __cpuinitdata = {
+	.setup	= msm_local_timer_setup,
+	.stop	= msm_local_timer_stop,
+};
+#endif /* CONFIG_LOCAL_TIMERS */
+
 static void __init msm_timer_init(void)
 {
 	struct clock_event_device *ce = &msm_clockevent;
@@ -173,8 +212,12 @@ static void __init msm_timer_init(void)
 		*__this_cpu_ptr(msm_evt.percpu_evt) = ce;
 		res = request_percpu_irq(ce->irq, msm_timer_interrupt,
 					 ce->name, msm_evt.percpu_evt);
-		if (!res)
+		if (!res) {
 			enable_percpu_irq(ce->irq, 0);
+#ifdef CONFIG_LOCAL_TIMERS
+			local_timer_register(&msm_local_timer_ops);
+#endif
+		}
 	} else {
 		msm_evt.evt = ce;
 		res = request_irq(ce->irq, msm_timer_interrupt,
@@ -191,40 +234,6 @@ err:
 		pr_err("clocksource_register failed\n");
 }
 
-#ifdef CONFIG_LOCAL_TIMERS
-int __cpuinit local_timer_setup(struct clock_event_device *evt)
-{
-	/* Use existing clock_event for cpu 0 */
-	if (!smp_processor_id())
-		return 0;
-
-	writel_relaxed(0, event_base + TIMER_ENABLE);
-	writel_relaxed(0, event_base + TIMER_CLEAR);
-	writel_relaxed(~0, event_base + TIMER_MATCH_VAL);
-	evt->irq = msm_clockevent.irq;
-	evt->name = "local_timer";
-	evt->features = msm_clockevent.features;
-	evt->rating = msm_clockevent.rating;
-	evt->set_mode = msm_timer_set_mode;
-	evt->set_next_event = msm_timer_set_next_event;
-	evt->shift = msm_clockevent.shift;
-	evt->mult = div_sc(GPT_HZ, NSEC_PER_SEC, evt->shift);
-	evt->max_delta_ns = clockevent_delta2ns(0xf0000000, evt);
-	evt->min_delta_ns = clockevent_delta2ns(4, evt);
-
-	*__this_cpu_ptr(msm_evt.percpu_evt) = evt;
-	clockevents_register_device(evt);
-	enable_percpu_irq(evt->irq, 0);
-	return 0;
-}
-
-void local_timer_stop(struct clock_event_device *evt)
-{
-	evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt);
-	disable_percpu_irq(evt->irq);
-}
-#endif /* CONFIG_LOCAL_TIMERS */
-
 struct sys_timer msm_timer = {
 	.init = msm_timer_init
 };
diff --git a/arch/arm/mach-nomadik/board-nhk8815.c b/arch/arm/mach-nomadik/board-nhk8815.c
index f6f74adbe8c..58cacafcf66 100644
--- a/arch/arm/mach-nomadik/board-nhk8815.c
+++ b/arch/arm/mach-nomadik/board-nhk8815.c
@@ -27,11 +27,11 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/irq.h>
 #include <asm/mach/flash.h>
+#include <asm/mach/time.h>
 
 #include <plat/gpio-nomadik.h>
 #include <plat/mtu.h>
 
-#include <mach/setup.h>
 #include <mach/nand.h>
 #include <mach/fsmc.h>
 
@@ -246,10 +246,7 @@ static void __init nomadik_timer_init(void)
 	src_cr |= SRC_CR_INIT_VAL;
 	writel(src_cr, io_p2v(NOMADIK_SRC_BASE));
 
-	/* Save global pointer to mtu, used by platform timer code */
-	mtu_base = io_p2v(NOMADIK_MTU0_BASE);
-
-	nmdk_timer_init();
+	nmdk_timer_init(io_p2v(NOMADIK_MTU0_BASE));
 }
 
 static struct sys_timer nomadik_timer = {
diff --git a/arch/arm/mach-nomadik/include/mach/setup.h b/arch/arm/mach-nomadik/include/mach/setup.h
deleted file mode 100644
index bcaeaf41c05..00000000000
--- a/arch/arm/mach-nomadik/include/mach/setup.h
+++ /dev/null
@@ -1,19 +0,0 @@
-
-/*
- * These symbols are needed for board-specific files to call their
- * own cpu-specific files
- */
-
-#ifndef __ASM_ARCH_SETUP_H
-#define __ASM_ARCH_SETUP_H
-
-#include <asm/mach/time.h>
-#include <linux/init.h>
-
-#ifdef CONFIG_NOMADIK_8815
-
-extern void nmdk_timer_init(void);
-
-#endif /* NOMADIK_8815 */
-
-#endif /*  __ASM_ARCH_SETUP_H */
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index bd76394ccaf..05c2ffc1030 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -23,7 +23,6 @@ obj-$(CONFIG_TWL4030_CORE) += omap_twl.o
 
 # SMP support ONLY available for OMAP4
 obj-$(CONFIG_SMP)			+= omap-smp.o omap-headsmp.o
-obj-$(CONFIG_LOCAL_TIMERS)		+= timer-mpu.o
 obj-$(CONFIG_HOTPLUG_CPU)		+= omap-hotplug.o
 obj-$(CONFIG_ARCH_OMAP4)		+= omap4-common.o omap-wakeupgen.o \
 					   sleep44xx.o
diff --git a/arch/arm/mach-omap2/timer-mpu.c b/arch/arm/mach-omap2/timer-mpu.c
deleted file mode 100644
index 31c0ac4cd66..00000000000
--- a/arch/arm/mach-omap2/timer-mpu.c
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * The MPU local timer source file. In OMAP4, both cortex-a9 cores have
- * own timer in it's MPU domain. These timers will be driving the
- * linux kernel SMP tick framework when active. These timers are not
- * part of the wake up domain.
- *
- * Copyright (C) 2009 Texas Instruments, Inc.
- *
- * Author:
- *      Santosh Shilimkar <santosh.shilimkar@ti.com>
- *
- * This file is based on arm realview smp platform file.
- * Copyright (C) 2002 ARM Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/clockchips.h>
-#include <asm/irq.h>
-#include <asm/smp_twd.h>
-#include <asm/localtimer.h>
-
-/*
- * Setup the local clock events for a CPU.
- */
-int __cpuinit local_timer_setup(struct clock_event_device *evt)
-{
-	/* Local timers are not supprted on OMAP4430 ES1.0 */
-	if (omap_rev() == OMAP4430_REV_ES1_0)
-		return -ENXIO;
-
-	evt->irq = OMAP44XX_IRQ_LOCALTIMER;
-	twd_timer_setup(evt);
-	return 0;
-}
-
diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index 5c9acea9576..c512bac69ec 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -39,7 +39,7 @@
 
 #include <asm/mach/time.h>
 #include <plat/dmtimer.h>
-#include <asm/localtimer.h>
+#include <asm/smp_twd.h>
 #include <asm/sched_clock.h>
 #include "common.h"
 #include <plat/omap_hwmod.h>
@@ -324,14 +324,26 @@ OMAP_SYS_TIMER(3_secure)
 #endif
 
 #ifdef CONFIG_ARCH_OMAP4
-static void __init omap4_timer_init(void)
-{
 #ifdef CONFIG_LOCAL_TIMERS
-	twd_base = ioremap(OMAP44XX_LOCAL_TWD_BASE, SZ_256);
-	BUG_ON(!twd_base);
+static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
+			      OMAP44XX_LOCAL_TWD_BASE,
+			      OMAP44XX_IRQ_LOCALTIMER);
 #endif
+
+static void __init omap4_timer_init(void)
+{
 	omap2_gp_clockevent_init(1, OMAP4_CLKEV_SOURCE);
 	omap2_gp_clocksource_init(2, OMAP4_MPU_SOURCE);
+#ifdef CONFIG_LOCAL_TIMERS
+	/* Local timers are not supprted on OMAP4430 ES1.0 */
+	if (omap_rev() != OMAP4430_REV_ES1_0) {
+		int err;
+
+		err = twd_local_timer_register(&twd_local_timer);
+		if (err)
+			pr_err("twd_local_timer_register failed %d\n", err);
+	}
+#endif
 }
 OMAP_SYS_TIMER(4)
 #endif
diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c
index 157e1bc6e83..baf382c5e77 100644
--- a/arch/arm/mach-realview/realview_eb.c
+++ b/arch/arm/mach-realview/realview_eb.c
@@ -36,7 +36,7 @@
 #include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
 #include <asm/hardware/cache-l2x0.h>
-#include <asm/localtimer.h>
+#include <asm/smp_twd.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -383,6 +383,23 @@ static void realview_eb11mp_fixup(void)
 	realview_eb_isp1761_resources[1].end	= IRQ_EB11MP_USB;
 }
 
+#ifdef CONFIG_HAVE_ARM_TWD
+static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
+			      REALVIEW_EB11MP_TWD_BASE,
+			      IRQ_LOCALTIMER);
+
+static void __init realview_eb_twd_init(void)
+{
+	if (core_tile_eb11mp() || core_tile_a9mp()) {
+		int err = twd_local_timer_register(&twd_local_timer);
+		if (err)
+			pr_err("twd_local_timer_register failed %d\n", err);
+	}
+}
+#else
+#define realview_eb_twd_init()	do { } while(0)
+#endif
+
 static void __init realview_eb_timer_init(void)
 {
 	unsigned int timer_irq;
@@ -392,15 +409,13 @@ static void __init realview_eb_timer_init(void)
 	timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE);
 	timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20;
 
-	if (core_tile_eb11mp() || core_tile_a9mp()) {
-#ifdef CONFIG_LOCAL_TIMERS
-		twd_base = __io_address(REALVIEW_EB11MP_TWD_BASE);
-#endif
+	if (core_tile_eb11mp() || core_tile_a9mp())
 		timer_irq = IRQ_EB11MP_TIMER0_1;
-	} else
+	else
 		timer_irq = IRQ_EB_TIMER0_1;
 
 	realview_timer_init(timer_irq);
+	realview_eb_twd_init();
 }
 
 static struct sys_timer realview_eb_timer = {
diff --git a/arch/arm/mach-realview/realview_pb11mp.c b/arch/arm/mach-realview/realview_pb11mp.c
index ae7fe54f6eb..a98c536e332 100644
--- a/arch/arm/mach-realview/realview_pb11mp.c
+++ b/arch/arm/mach-realview/realview_pb11mp.c
@@ -36,7 +36,7 @@
 #include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
 #include <asm/hardware/cache-l2x0.h>
-#include <asm/localtimer.h>
+#include <asm/smp_twd.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
@@ -290,6 +290,21 @@ static void __init gic_init_irq(void)
 	gic_cascade_irq(1, IRQ_TC11MP_PB_IRQ1);
 }
 
+#ifdef CONFIG_HAVE_ARM_TWD
+static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
+			      REALVIEW_TC11MP_TWD_BASE,
+			      IRQ_LOCALTIMER);
+
+static void __init realview_pb11mp_twd_init(void)
+{
+	int err = twd_local_timer_register(&twd_local_timer);
+	if (err)
+		pr_err("twd_local_timer_register failed %d\n", err);
+}
+#else
+#define realview_pb11mp_twd_init()	do {} while(0)
+#endif
+
 static void __init realview_pb11mp_timer_init(void)
 {
 	timer0_va_base = __io_address(REALVIEW_PB11MP_TIMER0_1_BASE);
@@ -297,10 +312,8 @@ static void __init realview_pb11mp_timer_init(void)
 	timer2_va_base = __io_address(REALVIEW_PB11MP_TIMER2_3_BASE);
 	timer3_va_base = __io_address(REALVIEW_PB11MP_TIMER2_3_BASE) + 0x20;
 
-#ifdef CONFIG_LOCAL_TIMERS
-	twd_base = __io_address(REALVIEW_TC11MP_TWD_BASE);
-#endif
 	realview_timer_init(IRQ_TC11MP_TIMER0_1);
+	realview_pb11mp_twd_init();
 }
 
 static struct sys_timer realview_pb11mp_timer = {
diff --git a/arch/arm/mach-realview/realview_pbx.c b/arch/arm/mach-realview/realview_pbx.c
index 1cd9956f587..3f2f605624e 100644
--- a/arch/arm/mach-realview/realview_pbx.c
+++ b/arch/arm/mach-realview/realview_pbx.c
@@ -298,6 +298,21 @@ static void __init gic_init_irq(void)
 	}
 }
 
+#ifdef CONFIG_HAVE_ARM_TWD
+static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
+			      REALVIEW_PBX_TILE_TWD_BASE,
+			      IRQ_LOCALTIMER);
+
+static void __init realview_pbx_twd_init(void)
+{
+	int err = twd_local_timer_register(&twd_local_timer);
+	if (err)
+		pr_err("twd_local_timer_register failed %d\n", err);
+}
+#else
+#define realview_pbx_twd_init()	do { } while(0)
+#endif
+
 static void __init realview_pbx_timer_init(void)
 {
 	timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE);
@@ -305,11 +320,8 @@ static void __init realview_pbx_timer_init(void)
 	timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
 	timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
 
-#ifdef CONFIG_LOCAL_TIMERS
-	if (core_tile_pbx11mp() || core_tile_pbxa9mp())
-		twd_base = __io_address(REALVIEW_PBX_TILE_TWD_BASE);
-#endif
 	realview_timer_init(IRQ_PBX_TIMER0_1);
+	realview_pbx_twd_init();
 }
 
 static struct sys_timer realview_pbx_timer = {
diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile
index 7ad6954c46c..e7c2590b75d 100644
--- a/arch/arm/mach-shmobile/Makefile
+++ b/arch/arm/mach-shmobile/Makefile
@@ -16,7 +16,6 @@ obj-$(CONFIG_ARCH_R8A7779)	+= setup-r8a7779.o clock-r8a7779.o intc-r8a7779.o
 # SMP objects
 smp-y				:= platsmp.o headsmp.o
 smp-$(CONFIG_HOTPLUG_CPU)	+= hotplug.o
-smp-$(CONFIG_LOCAL_TIMERS)	+= localtimer.o
 smp-$(CONFIG_ARCH_SH73A0)	+= smp-sh73a0.o
 smp-$(CONFIG_ARCH_R8A7779)	+= smp-r8a7779.o
 
diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h
index e4b945e271e..9fde3eb686a 100644
--- a/arch/arm/mach-shmobile/include/mach/common.h
+++ b/arch/arm/mach-shmobile/include/mach/common.h
@@ -2,6 +2,8 @@
 #define __ARCH_MACH_COMMON_H
 
 extern struct sys_timer shmobile_timer;
+struct twd_local_timer;
+void shmobile_twd_init(struct twd_local_timer *twd_local_timer);
 extern void shmobile_setup_console(void);
 extern void shmobile_secondary_vector(void);
 extern int shmobile_platform_cpu_kill(unsigned int cpu);
diff --git a/arch/arm/mach-shmobile/localtimer.c b/arch/arm/mach-shmobile/localtimer.c
deleted file mode 100644
index ad9ccc9900c..00000000000
--- a/arch/arm/mach-shmobile/localtimer.c
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * SMP support for R-Mobile / SH-Mobile - local timer portion
- *
- * Copyright (C) 2010  Magnus Damm
- *
- * Based on vexpress, Copyright (C) 2002 ARM Ltd, All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/clockchips.h>
-#include <asm/smp_twd.h>
-#include <asm/localtimer.h>
-
-/*
- * Setup the local clock events for a CPU.
- */
-int __cpuinit local_timer_setup(struct clock_event_device *evt)
-{
-	evt->irq = 29;
-	twd_timer_setup(evt);
-	return 0;
-}
diff --git a/arch/arm/mach-shmobile/platsmp.c b/arch/arm/mach-shmobile/platsmp.c
index 993381257f6..45fa3924c6a 100644
--- a/arch/arm/mach-shmobile/platsmp.c
+++ b/arch/arm/mach-shmobile/platsmp.c
@@ -17,7 +17,6 @@
 #include <linux/smp.h>
 #include <linux/io.h>
 #include <asm/hardware/gic.h>
-#include <asm/localtimer.h>
 #include <asm/mach-types.h>
 #include <mach/common.h>
 
diff --git a/arch/arm/mach-shmobile/smp-r8a7779.c b/arch/arm/mach-shmobile/smp-r8a7779.c
index 4fe2e9eaf50..9bb7b8575a1 100644
--- a/arch/arm/mach-shmobile/smp-r8a7779.c
+++ b/arch/arm/mach-shmobile/smp-r8a7779.c
@@ -64,6 +64,8 @@ static void __iomem *scu_base_addr(void)
 static DEFINE_SPINLOCK(scu_lock);
 static unsigned long tmp;
 
+static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29);
+
 static void modify_scu_cpu_psr(unsigned long set, unsigned long clr)
 {
 	void __iomem *scu_base = scu_base_addr();
@@ -82,11 +84,7 @@ unsigned int __init r8a7779_get_core_count(void)
 {
 	void __iomem *scu_base = scu_base_addr();
 
-#ifdef CONFIG_HAVE_ARM_TWD
-	/* twd_base needs to be initialized before percpu_timer_setup() */
-	twd_base = (void __iomem *)0xf0000600;
-#endif
-
+	shmobile_twd_init(&twd_local_timer);
 	return scu_get_core_count(scu_base);
 }
 
diff --git a/arch/arm/mach-shmobile/smp-sh73a0.c b/arch/arm/mach-shmobile/smp-sh73a0.c
index 2d0d4212be4..c0a9093ba3a 100644
--- a/arch/arm/mach-shmobile/smp-sh73a0.c
+++ b/arch/arm/mach-shmobile/smp-sh73a0.c
@@ -42,6 +42,8 @@ static void __iomem *scu_base_addr(void)
 static DEFINE_SPINLOCK(scu_lock);
 static unsigned long tmp;
 
+static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29);
+
 static void modify_scu_cpu_psr(unsigned long set, unsigned long clr)
 {
 	void __iomem *scu_base = scu_base_addr();
@@ -60,11 +62,7 @@ unsigned int __init sh73a0_get_core_count(void)
 {
 	void __iomem *scu_base = scu_base_addr();
 
-#ifdef CONFIG_HAVE_ARM_TWD
-	/* twd_base needs to be initialized before percpu_timer_setup() */
-	twd_base = (void __iomem *)0xf0000600;
-#endif
-
+	shmobile_twd_init(&twd_local_timer);
 	return scu_get_core_count(scu_base);
 }
 
diff --git a/arch/arm/mach-shmobile/timer.c b/arch/arm/mach-shmobile/timer.c
index 895794b543c..be16231e86f 100644
--- a/arch/arm/mach-shmobile/timer.c
+++ b/arch/arm/mach-shmobile/timer.c
@@ -20,6 +20,7 @@
  */
 #include <linux/platform_device.h>
 #include <asm/mach/time.h>
+#include <asm/smp_twd.h>
 
 static void __init shmobile_late_time_init(void)
 {
@@ -41,6 +42,15 @@ static void __init shmobile_timer_init(void)
 	late_time_init = shmobile_late_time_init;
 }
 
+void __init shmobile_twd_init(struct twd_local_timer *twd_local_timer)
+{
+#ifdef CONFIG_HAVE_ARM_TWD
+	int err = twd_local_timer_register(twd_local_timer);
+	if (err)
+		pr_err("twd_local_timer_register failed %d\n", err);
+#endif
+}
+
 struct sys_timer shmobile_timer = {
 	.init		= shmobile_timer_init,
 };
diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile
index e120ff54f66..f7d044369ed 100644
--- a/arch/arm/mach-tegra/Makefile
+++ b/arch/arm/mach-tegra/Makefile
@@ -13,7 +13,7 @@ obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= tegra2_emc.o
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= pinmux-tegra20-tables.o
 obj-$(CONFIG_ARCH_TEGRA_3x_SOC)		+= pinmux-tegra30-tables.o
 obj-$(CONFIG_ARCH_TEGRA_3x_SOC)		+= board-dt-tegra30.o
-obj-$(CONFIG_SMP)                       += platsmp.o localtimer.o headsmp.o
+obj-$(CONFIG_SMP)                       += platsmp.o headsmp.o
 obj-$(CONFIG_HOTPLUG_CPU)               += hotplug.o
 obj-$(CONFIG_TEGRA_SYSTEM_DMA)		+= dma.o
 obj-$(CONFIG_CPU_FREQ)                  += cpu-tegra.o
diff --git a/arch/arm/mach-tegra/localtimer.c b/arch/arm/mach-tegra/localtimer.c
deleted file mode 100644
index e91d681d45a..00000000000
--- a/arch/arm/mach-tegra/localtimer.c
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- *  arch/arm/mach-tegra/localtimer.c
- *
- *  Copyright (C) 2002 ARM Ltd.
- *  All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/clockchips.h>
-#include <asm/irq.h>
-#include <asm/smp_twd.h>
-#include <asm/localtimer.h>
-
-/*
- * Setup the local clock events for a CPU.
- */
-int __cpuinit local_timer_setup(struct clock_event_device *evt)
-{
-	evt->irq = IRQ_LOCALTIMER;
-	twd_timer_setup(evt);
-	return 0;
-}
diff --git a/arch/arm/mach-tegra/timer.c b/arch/arm/mach-tegra/timer.c
index 1d1acda4f3e..1eed8d4a80e 100644
--- a/arch/arm/mach-tegra/timer.c
+++ b/arch/arm/mach-tegra/timer.c
@@ -28,7 +28,7 @@
 #include <linux/io.h>
 
 #include <asm/mach/time.h>
-#include <asm/localtimer.h>
+#include <asm/smp_twd.h>
 #include <asm/sched_clock.h>
 
 #include <mach/iomap.h>
@@ -162,6 +162,21 @@ static struct irqaction tegra_timer_irq = {
 	.irq		= INT_TMR3,
 };
 
+#ifdef CONFIG_HAVE_ARM_TWD
+static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
+			      TEGRA_ARM_PERIF_BASE + 0x600,
+			      IRQ_LOCALTIMER);
+
+static void __init tegra_twd_init(void)
+{
+	int err = twd_local_timer_register(&twd_local_timer);
+	if (err)
+		pr_err("twd_local_timer_register failed %d\n", err);
+}
+#else
+#define tegra_twd_init()	do {} while(0)
+#endif
+
 static void __init tegra_init_timer(void)
 {
 	struct clk *clk;
@@ -188,10 +203,6 @@ static void __init tegra_init_timer(void)
 	else
 		clk_enable(clk);
 
-#ifdef CONFIG_HAVE_ARM_TWD
-	twd_base = IO_ADDRESS(TEGRA_ARM_PERIF_BASE + 0x600);
-#endif
-
 	switch (rate) {
 	case 12000000:
 		timer_writel(0x000b, TIMERUS_USEC_CFG);
@@ -231,6 +242,7 @@ static void __init tegra_init_timer(void)
 	tegra_clockevent.cpumask = cpu_all_mask;
 	tegra_clockevent.irq = tegra_timer_irq.irq;
 	clockevents_register_device(&tegra_clockevent);
+	tegra_twd_init();
 }
 
 struct sys_timer tegra_timer = {
diff --git a/arch/arm/mach-ux500/Kconfig b/arch/arm/mach-ux500/Kconfig
index 52af00446a6..afb3706bab2 100644
--- a/arch/arm/mach-ux500/Kconfig
+++ b/arch/arm/mach-ux500/Kconfig
@@ -28,6 +28,7 @@ config MACH_U8500
 	bool "U8500 Development platform"
 	depends on UX500_SOC_DB8500
 	select TPS6105X
+	select SOC_BUS
 	help
 	  Include support for the mop500 development platform.
 
@@ -49,6 +50,12 @@ config MACH_U5500
 	depends on UX500_SOC_DB5500
 	help
 	  Include support for the U5500 development platform.
+
+config MACH_UX500_DT
+	bool "Generic U8500 support using device tree"
+	depends on MACH_U8500
+	select USE_OF
+
 endmenu
 
 config UX500_DEBUG_UART
diff --git a/arch/arm/mach-ux500/Makefile b/arch/arm/mach-ux500/Makefile
index 6bd2f451c18..35b389442af 100644
--- a/arch/arm/mach-ux500/Makefile
+++ b/arch/arm/mach-ux500/Makefile
@@ -15,7 +15,6 @@ obj-$(CONFIG_MACH_U8500)	+= board-mop500.o board-mop500-sdi.o \
 obj-$(CONFIG_MACH_U5500)	+= board-u5500.o board-u5500-sdi.o
 obj-$(CONFIG_SMP)		+= platsmp.o headsmp.o
 obj-$(CONFIG_HOTPLUG_CPU)	+= hotplug.o
-obj-$(CONFIG_LOCAL_TIMERS)	+= localtimer.o
 obj-$(CONFIG_U5500_MODEM_IRQ)	+= modem-irq-db5500.o
 obj-$(CONFIG_U5500_MBOX)	+= mbox-db5500.o
 
diff --git a/arch/arm/mach-ux500/Makefile.boot b/arch/arm/mach-ux500/Makefile.boot
index ff0a4b5b0a8..dd5cd00e255 100644
--- a/arch/arm/mach-ux500/Makefile.boot
+++ b/arch/arm/mach-ux500/Makefile.boot
@@ -2,3 +2,4 @@
 params_phys-y	:= 0x00000100
 initrd_phys-y	:= 0x00800000
 
+dtb-$(CONFIG_MACH_SNOWBALL) += snowball.dtb
diff --git a/arch/arm/mach-ux500/board-mop500-sdi.c b/arch/arm/mach-ux500/board-mop500-sdi.c
index 5dde4d4ebe8..479ebe04cf9 100644
--- a/arch/arm/mach-ux500/board-mop500-sdi.c
+++ b/arch/arm/mach-ux500/board-mop500-sdi.c
@@ -104,7 +104,7 @@ static struct mmci_platform_data mop500_sdi0_data = {
 #endif
 };
 
-static void sdi0_configure(void)
+static void sdi0_configure(struct device *parent)
 {
 	int ret;
 
@@ -123,15 +123,15 @@ static void sdi0_configure(void)
 	gpio_direction_output(sdi0_en, 1);
 
 	/* Add the device, force v2 to subrevision 1 */
-	db8500_add_sdi0(&mop500_sdi0_data, U8500_SDI_V2_PERIPHID);
+	db8500_add_sdi0(parent, &mop500_sdi0_data, U8500_SDI_V2_PERIPHID);
 }
 
-void mop500_sdi_tc35892_init(void)
+void mop500_sdi_tc35892_init(struct device *parent)
 {
 	mop500_sdi0_data.gpio_cd = GPIO_SDMMC_CD;
 	sdi0_en = GPIO_SDMMC_EN;
 	sdi0_vsel = GPIO_SDMMC_1V8_3V_SEL;
-	sdi0_configure();
+	sdi0_configure(parent);
 }
 
 /*
@@ -246,12 +246,13 @@ static struct mmci_platform_data mop500_sdi4_data = {
 #endif
 };
 
-void __init mop500_sdi_init(void)
+void __init mop500_sdi_init(struct device *parent)
 {
 	/* PoP:ed eMMC */
-	db8500_add_sdi2(&mop500_sdi2_data, U8500_SDI_V2_PERIPHID);
+	db8500_add_sdi2(parent, &mop500_sdi2_data, U8500_SDI_V2_PERIPHID);
 	/* On-board eMMC */
-	db8500_add_sdi4(&mop500_sdi4_data, U8500_SDI_V2_PERIPHID);
+	db8500_add_sdi4(parent, &mop500_sdi4_data, U8500_SDI_V2_PERIPHID);
+
 	/*
 	 * On boards with the TC35892 GPIO expander, sdi0 will finally
 	 * be added when the TC35892 initializes and calls
@@ -259,31 +260,31 @@ void __init mop500_sdi_init(void)
 	 */
 }
 
-void __init snowball_sdi_init(void)
+void __init snowball_sdi_init(struct device *parent)
 {
 	/* On Snowball MMC_CAP_SD_HIGHSPEED isn't supported (Hardware issue?) */
 	mop500_sdi0_data.capabilities &= ~MMC_CAP_SD_HIGHSPEED;
 	/* On-board eMMC */
-	db8500_add_sdi4(&mop500_sdi4_data, U8500_SDI_V2_PERIPHID);
+	db8500_add_sdi4(parent, &mop500_sdi4_data, U8500_SDI_V2_PERIPHID);
 	/* External Micro SD slot */
 	mop500_sdi0_data.gpio_cd = SNOWBALL_SDMMC_CD_GPIO;
 	mop500_sdi0_data.cd_invert = true;
 	sdi0_en = SNOWBALL_SDMMC_EN_GPIO;
 	sdi0_vsel = SNOWBALL_SDMMC_1V8_3V_GPIO;
-	sdi0_configure();
+	sdi0_configure(parent);
 }
 
-void __init hrefv60_sdi_init(void)
+void __init hrefv60_sdi_init(struct device *parent)
 {
 	/* PoP:ed eMMC */
-	db8500_add_sdi2(&mop500_sdi2_data, U8500_SDI_V2_PERIPHID);
+	db8500_add_sdi2(parent, &mop500_sdi2_data, U8500_SDI_V2_PERIPHID);
 	/* On-board eMMC */
-	db8500_add_sdi4(&mop500_sdi4_data, U8500_SDI_V2_PERIPHID);
+	db8500_add_sdi4(parent, &mop500_sdi4_data, U8500_SDI_V2_PERIPHID);
 	/* External Micro SD slot */
 	mop500_sdi0_data.gpio_cd = HREFV60_SDMMC_CD_GPIO;
 	sdi0_en = HREFV60_SDMMC_EN_GPIO;
 	sdi0_vsel = HREFV60_SDMMC_1V8_3V_GPIO;
-	sdi0_configure();
+	sdi0_configure(parent);
 	/* WLAN SDIO channel */
-	db8500_add_sdi1(&mop500_sdi1_data, U8500_SDI_V2_PERIPHID);
+	db8500_add_sdi1(parent, &mop500_sdi1_data, U8500_SDI_V2_PERIPHID);
 }
diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
index 5c00712907d..d0799d59221 100644
--- a/arch/arm/mach-ux500/board-mop500.c
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -30,6 +30,9 @@
 #include <linux/gpio_keys.h>
 #include <linux/delay.h>
 
+#include <linux/of.h>
+#include <linux/of_platform.h>
+
 #include <linux/leds.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -226,7 +229,12 @@ static struct tps6105x_platform_data mop500_tps61052_data = {
 
 static void mop500_tc35892_init(struct tc3589x *tc3589x, unsigned int base)
 {
-	mop500_sdi_tc35892_init();
+	struct device *parent = NULL;
+#if 0
+	/* FIXME: Is the sdi actually part of tc3589x? */
+	parent = tc3589x->dev;
+#endif
+	mop500_sdi_tc35892_init(parent);
 }
 
 static struct tc3589x_gpio_platform_data mop500_tc35892_gpio_data = {
@@ -353,12 +361,12 @@ U8500_I2C_CONTROLLER(1, 0xe, 1, 8, 100000, 200, I2C_FREQ_MODE_FAST);
 U8500_I2C_CONTROLLER(2,	0xe, 1, 8, 100000, 200, I2C_FREQ_MODE_FAST);
 U8500_I2C_CONTROLLER(3,	0xe, 1, 8, 100000, 200, I2C_FREQ_MODE_FAST);
 
-static void __init mop500_i2c_init(void)
+static void __init mop500_i2c_init(struct device *parent)
 {
-	db8500_add_i2c0(&u8500_i2c0_data);
-	db8500_add_i2c1(&u8500_i2c1_data);
-	db8500_add_i2c2(&u8500_i2c2_data);
-	db8500_add_i2c3(&u8500_i2c3_data);
+	db8500_add_i2c0(parent, &u8500_i2c0_data);
+	db8500_add_i2c1(parent, &u8500_i2c1_data);
+	db8500_add_i2c2(parent, &u8500_i2c2_data);
+	db8500_add_i2c3(parent, &u8500_i2c3_data);
 }
 
 static struct gpio_keys_button mop500_gpio_keys[] = {
@@ -435,7 +443,7 @@ static struct stedma40_chan_cfg ssp0_dma_cfg_tx = {
 };
 #endif
 
-static struct pl022_ssp_controller ssp0_platform_data = {
+static struct pl022_ssp_controller ssp0_plat = {
 	.bus_id = 0,
 #ifdef CONFIG_STE_DMA40
 	.enable_dma = 1,
@@ -451,9 +459,9 @@ static struct pl022_ssp_controller ssp0_platform_data = {
 	.num_chipselect = 5,
 };
 
-static void __init mop500_spi_init(void)
+static void __init mop500_spi_init(struct device *parent)
 {
-	db8500_add_ssp0(&ssp0_platform_data);
+	db8500_add_ssp0(parent, &ssp0_plat);
 }
 
 #ifdef CONFIG_STE_DMA40
@@ -587,11 +595,11 @@ static struct amba_pl011_data uart2_plat = {
 #endif
 };
 
-static void __init mop500_uart_init(void)
+static void __init mop500_uart_init(struct device *parent)
 {
-	db8500_add_uart0(&uart0_plat);
-	db8500_add_uart1(&uart1_plat);
-	db8500_add_uart2(&uart2_plat);
+	db8500_add_uart0(parent, &uart0_plat);
+	db8500_add_uart1(parent, &uart1_plat);
+	db8500_add_uart2(parent, &uart2_plat);
 }
 
 static struct platform_device *snowball_platform_devs[] __initdata = {
@@ -603,21 +611,27 @@ static struct platform_device *snowball_platform_devs[] __initdata = {
 
 static void __init mop500_init_machine(void)
 {
+	struct device *parent = NULL;
 	int i2c0_devs;
+	int i;
 
 	mop500_gpio_keys[0].gpio = GPIO_PROX_SENSOR;
 
-	u8500_init_devices();
+	parent = u8500_init_devices();
 
 	mop500_pins_init();
 
+	/* FIXME: parent of ab8500 should be prcmu */
+	for (i = 0; i < ARRAY_SIZE(mop500_platform_devs); i++)
+		mop500_platform_devs[i]->dev.parent = parent;
+
 	platform_add_devices(mop500_platform_devs,
 			ARRAY_SIZE(mop500_platform_devs));
 
-	mop500_i2c_init();
-	mop500_sdi_init();
-	mop500_spi_init();
-	mop500_uart_init();
+	mop500_i2c_init(parent);
+	mop500_sdi_init(parent);
+	mop500_spi_init(parent);
+	mop500_uart_init(parent);
 
 	i2c0_devs = ARRAY_SIZE(mop500_i2c0_devices);
 
@@ -631,19 +645,24 @@ static void __init mop500_init_machine(void)
 
 static void __init snowball_init_machine(void)
 {
+	struct device *parent = NULL;
 	int i2c0_devs;
+	int i;
 
-	u8500_init_devices();
+	parent = u8500_init_devices();
 
 	snowball_pins_init();
 
+	for (i = 0; i < ARRAY_SIZE(snowball_platform_devs); i++)
+		snowball_platform_devs[i]->dev.parent = parent;
+
 	platform_add_devices(snowball_platform_devs,
 			ARRAY_SIZE(snowball_platform_devs));
 
-	mop500_i2c_init();
-	snowball_sdi_init();
-	mop500_spi_init();
-	mop500_uart_init();
+	mop500_i2c_init(parent);
+	snowball_sdi_init(parent);
+	mop500_spi_init(parent);
+	mop500_uart_init(parent);
 
 	i2c0_devs = ARRAY_SIZE(mop500_i2c0_devices);
 	i2c_register_board_info(0, mop500_i2c0_devices, i2c0_devs);
@@ -656,7 +675,9 @@ static void __init snowball_init_machine(void)
 
 static void __init hrefv60_init_machine(void)
 {
+	struct device *parent = NULL;
 	int i2c0_devs;
+	int i;
 
 	/*
 	 * The HREFv60 board removed a GPIO expander and routed
@@ -665,17 +686,20 @@ static void __init hrefv60_init_machine(void)
 	 */
 	mop500_gpio_keys[0].gpio = HREFV60_PROX_SENSE_GPIO;
 
-	u8500_init_devices();
+	parent = u8500_init_devices();
 
 	hrefv60_pins_init();
 
+	for (i = 0; i < ARRAY_SIZE(mop500_platform_devs); i++)
+		mop500_platform_devs[i]->dev.parent = parent;
+
 	platform_add_devices(mop500_platform_devs,
 			ARRAY_SIZE(mop500_platform_devs));
 
-	mop500_i2c_init();
-	hrefv60_sdi_init();
-	mop500_spi_init();
-	mop500_uart_init();
+	mop500_i2c_init(parent);
+	hrefv60_sdi_init(parent);
+	mop500_spi_init(parent);
+	mop500_uart_init(parent);
 
 	i2c0_devs = ARRAY_SIZE(mop500_i2c0_devices);
 
@@ -718,3 +742,94 @@ MACHINE_START(SNOWBALL, "Calao Systems Snowball platform")
 	.handle_irq	= gic_handle_irq,
 	.init_machine	= snowball_init_machine,
 MACHINE_END
+
+#ifdef CONFIG_MACH_UX500_DT
+
+struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = {
+	OF_DEV_AUXDATA("arm,pl011", 0x80120000, "uart0", &uart0_plat),
+	OF_DEV_AUXDATA("arm,pl011", 0x80121000, "uart1", &uart1_plat),
+	OF_DEV_AUXDATA("arm,pl011", 0x80007000, "uart2", &uart2_plat),
+	OF_DEV_AUXDATA("arm,pl022", 0x80002000, "ssp0",  &ssp0_plat),
+	{},
+};
+
+static const struct of_device_id u8500_soc_node[] = {
+	/* only create devices below soc node */
+	{ .compatible = "stericsson,db8500", },
+	{ },
+};
+
+static void __init u8500_init_machine(void)
+{
+	struct device *parent = NULL;
+	int i2c0_devs;
+	int i;
+
+	parent = u8500_init_devices();
+	i2c0_devs = ARRAY_SIZE(mop500_i2c0_devices);
+
+	for (i = 0; i < ARRAY_SIZE(mop500_platform_devs); i++)
+		mop500_platform_devs[i]->dev.parent = parent;
+	for (i = 0; i < ARRAY_SIZE(snowball_platform_devs); i++)
+		snowball_platform_devs[i]->dev.parent = parent;
+
+	/* automatically probe child nodes of db8500 device */
+	of_platform_populate(NULL, u8500_soc_node, u8500_auxdata_lookup, parent);
+
+	if (of_machine_is_compatible("st-ericsson,mop500")) {
+		mop500_gpio_keys[0].gpio = GPIO_PROX_SENSOR;
+		mop500_pins_init();
+
+		platform_add_devices(mop500_platform_devs,
+				ARRAY_SIZE(mop500_platform_devs));
+
+		mop500_sdi_init(parent);
+	} else if (of_machine_is_compatible("calaosystems,snowball-a9500")) {
+		snowball_pins_init();
+		platform_add_devices(snowball_platform_devs,
+				ARRAY_SIZE(snowball_platform_devs));
+
+		snowball_sdi_init(parent);
+	} else if (of_machine_is_compatible("st-ericsson,hrefv60+")) {
+		/*
+		 * The HREFv60 board removed a GPIO expander and routed
+		 * all these GPIO pins to the internal GPIO controller
+		 * instead.
+		 */
+		mop500_gpio_keys[0].gpio = HREFV60_PROX_SENSE_GPIO;
+		i2c0_devs -= NUM_PRE_V60_I2C0_DEVICES;
+		hrefv60_pins_init();
+		platform_add_devices(mop500_platform_devs,
+				ARRAY_SIZE(mop500_platform_devs));
+
+		hrefv60_sdi_init(parent);
+	}
+	mop500_i2c_init(parent);
+
+	i2c_register_board_info(0, mop500_i2c0_devices, i2c0_devs);
+	i2c_register_board_info(2, mop500_i2c2_devices,
+				ARRAY_SIZE(mop500_i2c2_devices));
+
+	/* This board has full regulator constraints */
+	regulator_has_full_constraints();
+}
+
+static const char * u8500_dt_board_compat[] = {
+	"calaosystems,snowball-a9500",
+	"st-ericsson,hrefv60+",
+	"st-ericsson,u8500",
+	"st-ericsson,mop500",
+	NULL,
+};
+
+
+DT_MACHINE_START(U8500_DT, "ST-Ericsson U8500 platform (Device Tree Support)")
+	.map_io		= u8500_map_io,
+	.init_irq	= ux500_init_irq,
+	/* we re-use nomadik timer here */
+	.timer		= &ux500_timer,
+	.handle_irq	= gic_handle_irq,
+	.init_machine	= u8500_init_machine,
+	.dt_compat      = u8500_dt_board_compat,
+MACHINE_END
+#endif
diff --git a/arch/arm/mach-ux500/board-mop500.h b/arch/arm/mach-ux500/board-mop500.h
index f926d3db620..3d594c24bfe 100644
--- a/arch/arm/mach-ux500/board-mop500.h
+++ b/arch/arm/mach-ux500/board-mop500.h
@@ -75,10 +75,10 @@
 
 struct i2c_board_info;
 
-extern void mop500_sdi_init(void);
-extern void snowball_sdi_init(void);
-extern void hrefv60_sdi_init(void);
-extern void mop500_sdi_tc35892_init(void);
+extern void mop500_sdi_init(struct device *parent);
+extern void snowball_sdi_init(struct device *parent);
+extern void hrefv60_sdi_init(struct device *parent);
+extern void mop500_sdi_tc35892_init(struct device *parent);
 void __init mop500_u8500uib_init(void);
 void __init mop500_stuib_init(void);
 void __init mop500_pins_init(void);
diff --git a/arch/arm/mach-ux500/board-u5500-sdi.c b/arch/arm/mach-ux500/board-u5500-sdi.c
index 63c3f8058ff..836112eedde 100644
--- a/arch/arm/mach-ux500/board-u5500-sdi.c
+++ b/arch/arm/mach-ux500/board-u5500-sdi.c
@@ -66,9 +66,9 @@ static struct mmci_platform_data u5500_sdi0_data = {
 #endif
 };
 
-void __init u5500_sdi_init(void)
+void __init u5500_sdi_init(struct device *parent)
 {
 	nmk_config_pins(u5500_sdi_pins, ARRAY_SIZE(u5500_sdi_pins));
 
-	db5500_add_sdi0(&u5500_sdi0_data);
+	db5500_add_sdi0(parent, &u5500_sdi0_data);
 }
diff --git a/arch/arm/mach-ux500/board-u5500.c b/arch/arm/mach-ux500/board-u5500.c
index 9de9e9c4dbb..0ff4be72a80 100644
--- a/arch/arm/mach-ux500/board-u5500.c
+++ b/arch/arm/mach-ux500/board-u5500.c
@@ -97,9 +97,9 @@ static struct i2c_board_info __initdata u5500_i2c2_devices[] = {
 	},
 };
 
-static void __init u5500_i2c_init(void)
+static void __init u5500_i2c_init(struct device *parent)
 {
-	db5500_add_i2c2(&u5500_i2c2_data);
+	db5500_add_i2c2(parent, &u5500_i2c2_data);
 	i2c_register_board_info(2, ARRAY_AND_SIZE(u5500_i2c2_devices));
 }
 
@@ -126,20 +126,27 @@ static struct platform_device *u5500_platform_devices[] __initdata = {
 	&ab5500_device,
 };
 
-static void __init u5500_uart_init(void)
+static void __init u5500_uart_init(struct device *parent)
 {
-	db5500_add_uart0(NULL);
-	db5500_add_uart1(NULL);
-	db5500_add_uart2(NULL);
+	db5500_add_uart0(parent, NULL);
+	db5500_add_uart1(parent, NULL);
+	db5500_add_uart2(parent, NULL);
 }
 
 static void __init u5500_init_machine(void)
 {
-	u5500_init_devices();
+	struct device *parent = NULL;
+	int i;
+
+	parent = u5500_init_devices();
 	nmk_config_pins(u5500_pins, ARRAY_SIZE(u5500_pins));
-	u5500_i2c_init();
-	u5500_sdi_init();
-	u5500_uart_init();
+
+	u5500_i2c_init(parent);
+	u5500_sdi_init(parent);
+	u5500_uart_init(parent);
+
+	for (i = 0; i < ARRAY_SIZE(u5500_platform_devices); i++)
+		u5500_platform_devices[i]->dev.parent = parent;
 
 	platform_add_devices(u5500_platform_devices,
 		ARRAY_SIZE(u5500_platform_devices));
diff --git a/arch/arm/mach-ux500/cache-l2x0.c b/arch/arm/mach-ux500/cache-l2x0.c
index da5569d83d5..77a75ed0df6 100644
--- a/arch/arm/mach-ux500/cache-l2x0.c
+++ b/arch/arm/mach-ux500/cache-l2x0.c
@@ -5,6 +5,8 @@
  */
 
 #include <linux/io.h>
+#include <linux/of.h>
+
 #include <asm/cacheflush.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <mach/hardware.h>
@@ -45,7 +47,10 @@ static int __init ux500_l2x0_init(void)
 	ux500_l2x0_unlock();
 
 	/* 64KB way size, 8 way associativity, force WA */
-	l2x0_init(l2x0_base, 0x3e060000, 0xc0000fff);
+	if (of_have_populated_dt())
+		l2x0_of_init(0x3e060000, 0xc0000fff);
+	else
+		l2x0_init(l2x0_base, 0x3e060000, 0xc0000fff);
 
 	/*
 	 * We can't disable l2 as we are in non secure mode, currently
diff --git a/arch/arm/mach-ux500/cpu-db5500.c b/arch/arm/mach-ux500/cpu-db5500.c
index 18aa5c05c69..bca47f32082 100644
--- a/arch/arm/mach-ux500/cpu-db5500.c
+++ b/arch/arm/mach-ux500/cpu-db5500.c
@@ -147,13 +147,13 @@ static resource_size_t __initdata db5500_gpio_base[] = {
 	U5500_GPIOBANK7_BASE,
 };
 
-static void __init db5500_add_gpios(void)
+static void __init db5500_add_gpios(struct device *parent)
 {
 	struct nmk_gpio_platform_data pdata = {
 		/* No custom data yet */
 	};
 
-	dbx500_add_gpios(ARRAY_AND_SIZE(db5500_gpio_base),
+	dbx500_add_gpios(parent, ARRAY_AND_SIZE(db5500_gpio_base),
 			 IRQ_DB5500_GPIO0, &pdata);
 }
 
@@ -212,14 +212,36 @@ static int usb_db5500_tx_dma_cfg[] = {
 	DB5500_DMA_DEV38_USB_OTG_OEP_8
 };
 
-void __init u5500_init_devices(void)
+static const char *db5500_read_soc_id(void)
 {
-	db5500_add_gpios();
+	return kasprintf(GFP_KERNEL, "u5500 currently unsupported\n");
+}
+
+static struct device * __init db5500_soc_device_init(void)
+{
+	const char *soc_id = db5500_read_soc_id();
+
+	return ux500_soc_device_init(soc_id);
+}
+
+struct device * __init u5500_init_devices(void)
+{
+	struct device *parent;
+	int i;
+
+	parent = db5500_soc_device_init();
+
+	db5500_add_gpios(parent);
 	db5500_pmu_init();
-	db5500_dma_init();
-	db5500_add_rtc();
-	db5500_add_usb(usb_db5500_rx_dma_cfg, usb_db5500_tx_dma_cfg);
+	db5500_dma_init(parent);
+	db5500_add_rtc(parent);
+	db5500_add_usb(parent, usb_db5500_rx_dma_cfg, usb_db5500_tx_dma_cfg);
+
+	for (i = 0; i < ARRAY_SIZE(db5500_platform_devs); i++)
+		db5500_platform_devs[i]->dev.parent = parent;
 
 	platform_add_devices(db5500_platform_devs,
 			     ARRAY_SIZE(db5500_platform_devs));
+
+	return parent;
 }
diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c
index 7176ee7491a..9bd8163896c 100644
--- a/arch/arm/mach-ux500/cpu-db8500.c
+++ b/arch/arm/mach-ux500/cpu-db8500.c
@@ -24,6 +24,7 @@
 #include <mach/setup.h>
 #include <mach/devices.h>
 #include <mach/usb.h>
+#include <mach/db8500-regs.h>
 
 #include "devices-db8500.h"
 #include "ste-dma40-db8500.h"
@@ -132,13 +133,13 @@ static resource_size_t __initdata db8500_gpio_base[] = {
 	U8500_GPIOBANK8_BASE,
 };
 
-static void __init db8500_add_gpios(void)
+static void __init db8500_add_gpios(struct device *parent)
 {
 	struct nmk_gpio_platform_data pdata = {
 		.supports_sleepmode = true,
 	};
 
-	dbx500_add_gpios(ARRAY_AND_SIZE(db8500_gpio_base),
+	dbx500_add_gpios(parent, ARRAY_AND_SIZE(db8500_gpio_base),
 			 IRQ_DB8500_GPIO0, &pdata);
 }
 
@@ -164,17 +165,44 @@ static int usb_db8500_tx_dma_cfg[] = {
 	DB8500_DMA_DEV39_USB_OTG_OEP_8
 };
 
+static const char *db8500_read_soc_id(void)
+{
+	void __iomem *uid = __io_address(U8500_BB_UID_BASE);
+
+	return kasprintf(GFP_KERNEL, "%08x%08x%08x%08x%08x",
+			 readl((u32 *)uid+1),
+			 readl((u32 *)uid+1), readl((u32 *)uid+2),
+			 readl((u32 *)uid+3), readl((u32 *)uid+4));
+}
+
+static struct device * __init db8500_soc_device_init(void)
+{
+	const char *soc_id = db8500_read_soc_id();
+
+	return ux500_soc_device_init(soc_id);
+}
+
 /*
  * This function is called from the board init
  */
-void __init u8500_init_devices(void)
+struct device * __init u8500_init_devices(void)
 {
-	db8500_add_rtc();
-	db8500_add_gpios();
-	db8500_add_usb(usb_db8500_rx_dma_cfg, usb_db8500_tx_dma_cfg);
+	struct device *parent;
+	int i;
+
+	parent = db8500_soc_device_init();
+
+	db8500_add_rtc(parent);
+	db8500_add_gpios(parent);
+	db8500_add_usb(parent, usb_db8500_rx_dma_cfg, usb_db8500_tx_dma_cfg);
+
+	platform_device_register_data(parent,
+		"cpufreq-u8500", -1, NULL, 0);
+
+	for (i = 0; i < ARRAY_SIZE(platform_devs); i++)
+		platform_devs[i]->dev.parent = parent;
 
-	platform_device_register_simple("cpufreq-u8500", -1, NULL, 0);
 	platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
 
-	return ;
+	return parent;
 }
diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c
index f4185749437..d11f3892a27 100644
--- a/arch/arm/mach-ux500/cpu.c
+++ b/arch/arm/mach-ux500/cpu.c
@@ -2,6 +2,7 @@
  * Copyright (C) ST-Ericsson SA 2010
  *
  * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
+ * Author: Lee Jones <lee.jones@linaro.org> for ST-Ericsson
  * License terms: GNU General Public License (GPL) version 2
  */
 
@@ -11,10 +12,15 @@
 #include <linux/mfd/db8500-prcmu.h>
 #include <linux/mfd/db5500-prcmu.h>
 #include <linux/clksrc-dbx500-prcmu.h>
+#include <linux/sys_soc.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/stat.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
 
 #include <asm/hardware/gic.h>
 #include <asm/mach/map.h>
-#include <asm/localtimer.h>
 
 #include <mach/hardware.h>
 #include <mach/setup.h>
@@ -24,6 +30,11 @@
 
 void __iomem *_PRCMU_BASE;
 
+static const struct of_device_id ux500_dt_irq_match[] = {
+	{ .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
+	{},
+};
+
 void __init ux500_init_irq(void)
 {
 	void __iomem *dist_base;
@@ -38,7 +49,12 @@ void __init ux500_init_irq(void)
 	} else
 		ux500_unknown_soc();
 
-	gic_init(0, 29, dist_base, cpu_base);
+#ifdef CONFIG_OF
+	if (of_have_populated_dt())
+		of_irq_init(ux500_dt_irq_match);
+	else
+#endif
+		gic_init(0, 29, dist_base, cpu_base);
 
 	/*
 	 * Init clocks here so that they are available for system timer
@@ -50,3 +66,73 @@ void __init ux500_init_irq(void)
 		db8500_prcmu_early_init();
 	clk_init();
 }
+
+static const char * __init ux500_get_machine(void)
+{
+	return kasprintf(GFP_KERNEL, "DB%4x", dbx500_partnumber());
+}
+
+static const char * __init ux500_get_family(void)
+{
+	return kasprintf(GFP_KERNEL, "ux500");
+}
+
+static const char * __init ux500_get_revision(void)
+{
+	unsigned int rev = dbx500_revision();
+
+	if (rev == 0x01)
+		return kasprintf(GFP_KERNEL, "%s", "ED");
+	else if (rev >= 0xA0)
+		return kasprintf(GFP_KERNEL, "%d.%d",
+				 (rev >> 4) - 0xA + 1, rev & 0xf);
+
+	return kasprintf(GFP_KERNEL, "%s", "Unknown");
+}
+
+static ssize_t ux500_get_process(struct device *dev,
+					struct device_attribute *attr,
+					char *buf)
+{
+	if (dbx500_id.process == 0x00)
+		return sprintf(buf, "Standard\n");
+
+	return sprintf(buf, "%02xnm\n", dbx500_id.process);
+}
+
+static void __init soc_info_populate(struct soc_device_attribute *soc_dev_attr,
+				     const char *soc_id)
+{
+	soc_dev_attr->soc_id   = soc_id;
+	soc_dev_attr->machine  = ux500_get_machine();
+	soc_dev_attr->family   = ux500_get_family();
+	soc_dev_attr->revision = ux500_get_revision();
+}
+
+struct device_attribute ux500_soc_attr =
+	__ATTR(process,  S_IRUGO, ux500_get_process,  NULL);
+
+struct device * __init ux500_soc_device_init(const char *soc_id)
+{
+	struct device *parent;
+	struct soc_device *soc_dev;
+	struct soc_device_attribute *soc_dev_attr;
+
+	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
+	if (!soc_dev_attr)
+		return ERR_PTR(-ENOMEM);
+
+	soc_info_populate(soc_dev_attr, soc_id);
+
+	soc_dev = soc_device_register(soc_dev_attr);
+	if (IS_ERR_OR_NULL(soc_dev)) {
+	        kfree(soc_dev_attr);
+		return NULL;
+	}
+
+	parent = soc_device_to_device(soc_dev);
+	if (!IS_ERR_OR_NULL(parent))
+		device_create_file(parent, &ux500_soc_attr);
+
+	return parent;
+}
diff --git a/arch/arm/mach-ux500/devices-common.c b/arch/arm/mach-ux500/devices-common.c
index 898a64517b0..c5312a4b49f 100644
--- a/arch/arm/mach-ux500/devices-common.c
+++ b/arch/arm/mach-ux500/devices-common.c
@@ -20,8 +20,9 @@
 #include "devices-common.h"
 
 struct amba_device *
-dbx500_add_amba_device(const char *name, resource_size_t base,
-		       int irq, void *pdata, unsigned int periphid)
+dbx500_add_amba_device(struct device *parent, const char *name,
+		       resource_size_t base, int irq, void *pdata,
+		       unsigned int periphid)
 {
 	struct amba_device *dev;
 	int ret;
@@ -39,6 +40,8 @@ dbx500_add_amba_device(const char *name, resource_size_t base,
 
 	dev->dev.platform_data = pdata;
 
+	dev->dev.parent = parent;
+
 	ret = amba_device_add(dev, &iomem_resource);
 	if (ret) {
 		amba_device_put(dev);
@@ -49,60 +52,7 @@ dbx500_add_amba_device(const char *name, resource_size_t base,
 }
 
 static struct platform_device *
-dbx500_add_platform_device(const char *name, int id, void *pdata,
-			   struct resource *res, int resnum)
-{
-	struct platform_device *dev;
-	int ret;
-
-	dev = platform_device_alloc(name, id);
-	if (!dev)
-		return ERR_PTR(-ENOMEM);
-
-	dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
-	dev->dev.dma_mask = &dev->dev.coherent_dma_mask;
-
-	ret = platform_device_add_resources(dev, res, resnum);
-	if (ret)
-		goto out_free;
-
-	dev->dev.platform_data = pdata;
-
-	ret = platform_device_add(dev);
-	if (ret)
-		goto out_free;
-
-	return dev;
-
-out_free:
-	platform_device_put(dev);
-	return ERR_PTR(ret);
-}
-
-struct platform_device *
-dbx500_add_platform_device_4k1irq(const char *name, int id,
-				  resource_size_t base,
-				  int irq, void *pdata)
-{
-	struct resource resources[] = {
-		[0] = {
-			.start	= base,
-			.end	= base + SZ_4K - 1,
-			.flags	= IORESOURCE_MEM,
-		},
-		[1] = {
-			.start	= irq,
-			.end	= irq,
-			.flags	= IORESOURCE_IRQ,
-		}
-	};
-
-	return dbx500_add_platform_device(name, id, pdata, resources,
-					  ARRAY_SIZE(resources));
-}
-
-static struct platform_device *
-dbx500_add_gpio(int id, resource_size_t addr, int irq,
+dbx500_add_gpio(struct device *parent, int id, resource_size_t addr, int irq,
 		struct nmk_gpio_platform_data *pdata)
 {
 	struct resource resources[] = {
@@ -118,13 +68,18 @@ dbx500_add_gpio(int id, resource_size_t addr, int irq,
 		}
 	};
 
-	return platform_device_register_resndata(NULL, "gpio", id,
-				resources, ARRAY_SIZE(resources),
-				pdata, sizeof(*pdata));
+	return platform_device_register_resndata(
+		parent,
+		"gpio",
+		id,
+		resources,
+		ARRAY_SIZE(resources),
+		pdata,
+		sizeof(*pdata));
 }
 
-void dbx500_add_gpios(resource_size_t *base, int num, int irq,
-		      struct nmk_gpio_platform_data *pdata)
+void dbx500_add_gpios(struct device *parent, resource_size_t *base, int num,
+		      int irq, struct nmk_gpio_platform_data *pdata)
 {
 	int first = 0;
 	int i;
@@ -134,6 +89,6 @@ void dbx500_add_gpios(resource_size_t *base, int num, int irq,
 		pdata->first_irq = NOMADIK_GPIO_TO_IRQ(first);
 		pdata->num_gpio = 32;
 
-		dbx500_add_gpio(i, base[i], irq, pdata);
+		dbx500_add_gpio(parent, i, base[i], irq, pdata);
 	}
 }
diff --git a/arch/arm/mach-ux500/devices-common.h b/arch/arm/mach-ux500/devices-common.h
index 7825705033b..39c74ec82ad 100644
--- a/arch/arm/mach-ux500/devices-common.h
+++ b/arch/arm/mach-ux500/devices-common.h
@@ -8,80 +8,89 @@
 #ifndef __DEVICES_COMMON_H
 #define __DEVICES_COMMON_H
 
-extern struct amba_device *
-dbx500_add_amba_device(const char *name, resource_size_t base,
-		       int irq, void *pdata, unsigned int periphid);
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/sys_soc.h>
+#include <plat/i2c.h>
 
-extern struct platform_device *
-dbx500_add_platform_device_4k1irq(const char *name, int id,
-				  resource_size_t base,
-				  int irq, void *pdata);
+extern struct amba_device *
+dbx500_add_amba_device(struct device *parent, const char *name,
+		       resource_size_t base, int irq, void *pdata,
+		       unsigned int periphid);
 
 struct spi_master_cntlr;
 
 static inline struct amba_device *
-dbx500_add_msp_spi(const char *name, resource_size_t base, int irq,
+dbx500_add_msp_spi(struct device *parent, const char *name,
+		   resource_size_t base, int irq,
 		   struct spi_master_cntlr *pdata)
 {
-	return dbx500_add_amba_device(name, base, irq, pdata, 0);
+	return dbx500_add_amba_device(parent, name, base, irq,
+				      pdata, 0);
 }
 
 static inline struct amba_device *
-dbx500_add_spi(const char *name, resource_size_t base, int irq,
-	       struct spi_master_cntlr *pdata,
+dbx500_add_spi(struct device *parent, const char *name, resource_size_t base,
+	       int irq, struct spi_master_cntlr *pdata,
 	       u32 periphid)
 {
-	return dbx500_add_amba_device(name, base, irq, pdata, periphid);
+	return dbx500_add_amba_device(parent, name, base, irq,
+				      pdata, periphid);
 }
 
 struct mmci_platform_data;
 
 static inline struct amba_device *
-dbx500_add_sdi(const char *name, resource_size_t base, int irq,
-	       struct mmci_platform_data *pdata,
-	       u32 periphid)
+dbx500_add_sdi(struct device *parent, const char *name, resource_size_t base,
+	       int irq, struct mmci_platform_data *pdata, u32 periphid)
 {
-	return dbx500_add_amba_device(name, base, irq, pdata, periphid);
+	return dbx500_add_amba_device(parent, name, base, irq,
+				      pdata, periphid);
 }
 
 struct amba_pl011_data;
 
 static inline struct amba_device *
-dbx500_add_uart(const char *name, resource_size_t base, int irq,
-		struct amba_pl011_data *pdata)
+dbx500_add_uart(struct device *parent, const char *name, resource_size_t base,
+		int irq, struct amba_pl011_data *pdata)
 {
-	return dbx500_add_amba_device(name, base, irq, pdata, 0);
+	return dbx500_add_amba_device(parent, name, base, irq, pdata, 0);
 }
 
 struct nmk_i2c_controller;
 
 static inline struct platform_device *
-dbx500_add_i2c(int id, resource_size_t base, int irq,
-	       struct nmk_i2c_controller *pdata)
-{
-	return dbx500_add_platform_device_4k1irq("nmk-i2c", id, base, irq,
-						 pdata);
-}
-
-struct msp_i2s_platform_data;
-
-static inline struct platform_device *
-dbx500_add_msp_i2s(int id, resource_size_t base, int irq,
-		   struct msp_i2s_platform_data *pdata)
+dbx500_add_i2c(struct device *parent, int id, resource_size_t base, int irq,
+	       struct nmk_i2c_controller *data)
 {
-	return dbx500_add_platform_device_4k1irq("MSP_I2S", id, base, irq,
-						 pdata);
+	struct resource res[] = {
+		DEFINE_RES_MEM(base, SZ_4K),
+		DEFINE_RES_IRQ(irq),
+	};
+
+	struct platform_device_info pdevinfo = {
+		.parent = parent,
+		.name = "nmk-i2c",
+		.id = id,
+		.res = res,
+		.num_res = ARRAY_SIZE(res),
+		.data = data,
+		.size_data = sizeof(*data),
+		.dma_mask = DMA_BIT_MASK(32),
+	};
+
+	return platform_device_register_full(&pdevinfo);
 }
 
 static inline struct amba_device *
-dbx500_add_rtc(resource_size_t base, int irq)
+dbx500_add_rtc(struct device *parent, resource_size_t base, int irq)
 {
-	return dbx500_add_amba_device("rtc-pl031", base, irq, NULL, 0);
+	return dbx500_add_amba_device(parent, "rtc-pl031", base, irq, NULL, 0);
 }
 
 struct nmk_gpio_platform_data;
 
-void dbx500_add_gpios(resource_size_t *base, int num, int irq,
-		      struct nmk_gpio_platform_data *pdata);
+void dbx500_add_gpios(struct device *parent, resource_size_t *base, int num,
+		      int irq, struct nmk_gpio_platform_data *pdata);
 
 #endif
diff --git a/arch/arm/mach-ux500/devices-db5500.h b/arch/arm/mach-ux500/devices-db5500.h
index 0c4bccd02b9..e70955502c3 100644
--- a/arch/arm/mach-ux500/devices-db5500.h
+++ b/arch/arm/mach-ux500/devices-db5500.h
@@ -10,70 +10,90 @@
 
 #include "devices-common.h"
 
-#define db5500_add_i2c1(pdata) \
-	dbx500_add_i2c(1, U5500_I2C1_BASE, IRQ_DB5500_I2C1, pdata)
-#define db5500_add_i2c2(pdata) \
-	dbx500_add_i2c(2, U5500_I2C2_BASE, IRQ_DB5500_I2C2, pdata)
-#define db5500_add_i2c3(pdata) \
-	dbx500_add_i2c(3, U5500_I2C3_BASE, IRQ_DB5500_I2C3, pdata)
+#define db5500_add_i2c1(parent, pdata) \
+	dbx500_add_i2c(parent, 1, U5500_I2C1_BASE, IRQ_DB5500_I2C1, pdata)
+#define db5500_add_i2c2(parent, pdata) \
+	dbx500_add_i2c(parent, 2, U5500_I2C2_BASE, IRQ_DB5500_I2C2, pdata)
+#define db5500_add_i2c3(parent, pdata) \
+	dbx500_add_i2c(parent, 3, U5500_I2C3_BASE, IRQ_DB5500_I2C3, pdata)
 
-#define db5500_add_msp0_i2s(pdata) \
-	dbx500_add_msp_i2s(0, U5500_MSP0_BASE, IRQ_DB5500_MSP0, pdata)
-#define db5500_add_msp1_i2s(pdata) \
-	dbx500_add_msp_i2s(1, U5500_MSP1_BASE, IRQ_DB5500_MSP1, pdata)
-#define db5500_add_msp2_i2s(pdata) \
-	dbx500_add_msp_i2s(2, U5500_MSP2_BASE, IRQ_DB5500_MSP2, pdata)
+#define db5500_add_msp0_spi(parent, pdata) \
+	dbx500_add_msp_spi(parent, "msp0", U5500_MSP0_BASE, \
+			   IRQ_DB5500_MSP0, pdata)
+#define db5500_add_msp1_spi(parent, pdata) \
+	dbx500_add_msp_spi(parent, "msp1", U5500_MSP1_BASE, \
+			   IRQ_DB5500_MSP1, pdata)
+#define db5500_add_msp2_spi(parent, pdata) \
+	dbx500_add_msp_spi(parent, "msp2", U5500_MSP2_BASE, \
+			   IRQ_DB5500_MSP2, pdata)
 
-#define db5500_add_msp0_spi(pdata) \
-	dbx500_add_msp_spi("msp0", U5500_MSP0_BASE, IRQ_DB5500_MSP0, pdata)
-#define db5500_add_msp1_spi(pdata) \
-	dbx500_add_msp_spi("msp1", U5500_MSP1_BASE, IRQ_DB5500_MSP1, pdata)
-#define db5500_add_msp2_spi(pdata) \
-	dbx500_add_msp_spi("msp2", U5500_MSP2_BASE, IRQ_DB5500_MSP2, pdata)
+#define db5500_add_msp0_spi(parent, pdata) \
+	dbx500_add_msp_spi(parent, "msp0", U5500_MSP0_BASE, \
+			  IRQ_DB5500_MSP0, pdata)
+#define db5500_add_msp1_spi(parent, pdata) \
+	dbx500_add_msp_spi(parent, "msp1", U5500_MSP1_BASE, \
+			  IRQ_DB5500_MSP1, pdata)
+#define db5500_add_msp2_spi(parent, pdata) \
+	dbx500_add_msp_spi(parent, "msp2", U5500_MSP2_BASE, \
+			  IRQ_DB5500_MSP2, pdata)
 
-#define db5500_add_rtc() \
-	dbx500_add_rtc(U5500_RTC_BASE, IRQ_DB5500_RTC);
+#define db5500_add_rtc(parent) \
+	dbx500_add_rtc(parent, U5500_RTC_BASE, IRQ_DB5500_RTC);
 
-#define db5500_add_usb(rx_cfg, tx_cfg) \
-	ux500_add_usb(U5500_USBOTG_BASE, IRQ_DB5500_USBOTG, rx_cfg, tx_cfg)
+#define db5500_add_usb(parent, rx_cfg, tx_cfg) \
+	ux500_add_usb(parent, U5500_USBOTG_BASE, \
+		      IRQ_DB5500_USBOTG, rx_cfg, tx_cfg)
 
-#define db5500_add_sdi0(pdata) \
-	dbx500_add_sdi("sdi0", U5500_SDI0_BASE, IRQ_DB5500_SDMMC0, pdata, \
+#define db5500_add_sdi0(parent, pdata) \
+	dbx500_add_sdi(parent, "sdi0", U5500_SDI0_BASE, \
+		       IRQ_DB5500_SDMMC0, pdata,	\
 		       0x10480180)
-#define db5500_add_sdi1(pdata) \
-	dbx500_add_sdi("sdi1", U5500_SDI1_BASE, IRQ_DB5500_SDMMC1, pdata, \
+#define db5500_add_sdi1(parent, pdata) \
+	dbx500_add_sdi(parent, "sdi1", U5500_SDI1_BASE, \
+		       IRQ_DB5500_SDMMC1, pdata,	\
 		       0x10480180)
-#define db5500_add_sdi2(pdata) \
-	dbx500_add_sdi("sdi2", U5500_SDI2_BASE, IRQ_DB5500_SDMMC2, pdata \
+#define db5500_add_sdi2(parent, pdata) \
+	dbx500_add_sdi(parent, "sdi2", U5500_SDI2_BASE, \
+		       IRQ_DB5500_SDMMC2, pdata		\
 		       0x10480180)
-#define db5500_add_sdi3(pdata) \
-	dbx500_add_sdi("sdi3", U5500_SDI3_BASE, IRQ_DB5500_SDMMC3, pdata \
+#define db5500_add_sdi3(parent, pdata) \
+	dbx500_add_sdi(parent, "sdi3", U5500_SDI3_BASE, \
+		       IRQ_DB5500_SDMMC3, pdata		\
 		       0x10480180)
-#define db5500_add_sdi4(pdata) \
-	dbx500_add_sdi("sdi4", U5500_SDI4_BASE, IRQ_DB5500_SDMMC4, pdata \
+#define db5500_add_sdi4(parent, pdata) \
+	dbx500_add_sdi(parent, "sdi4", U5500_SDI4_BASE, \
+		       IRQ_DB5500_SDMMC4, pdata		\
 		       0x10480180)
 
 /* This one has a bad peripheral ID in the U5500 silicon */
-#define db5500_add_spi0(pdata) \
-	dbx500_add_spi("spi0", U5500_SPI0_BASE, IRQ_DB5500_SPI0, pdata, \
+#define db5500_add_spi0(parent, pdata) \
+	dbx500_add_spi(parent, "spi0", U5500_SPI0_BASE, \
+		       IRQ_DB5500_SPI0, pdata,		\
 		       0x10080023)
-#define db5500_add_spi1(pdata) \
-	dbx500_add_spi("spi1", U5500_SPI1_BASE, IRQ_DB5500_SPI1, pdata, \
+#define db5500_add_spi1(parent, pdata) \
+	dbx500_add_spi(parent, "spi1", U5500_SPI1_BASE, \
+		       IRQ_DB5500_SPI1, pdata,		\
 		       0x10080023)
-#define db5500_add_spi2(pdata) \
-	dbx500_add_spi("spi2", U5500_SPI2_BASE, IRQ_DB5500_SPI2, pdata \
+#define db5500_add_spi2(parent, pdata) \
+	dbx500_add_spi(parent, "spi2", U5500_SPI2_BASE, \
+		       IRQ_DB5500_SPI2, pdata		\
 		       0x10080023)
-#define db5500_add_spi3(pdata) \
-	dbx500_add_spi("spi3", U5500_SPI3_BASE, IRQ_DB5500_SPI3, pdata \
+#define db5500_add_spi3(parent, pdata) \
+	dbx500_add_spi(parent, "spi3", U5500_SPI3_BASE, \
+		       IRQ_DB5500_SPI3, pdata		\
 		       0x10080023)
 
-#define db5500_add_uart0(plat) \
-	dbx500_add_uart("uart0", U5500_UART0_BASE, IRQ_DB5500_UART0, plat)
-#define db5500_add_uart1(plat) \
-	dbx500_add_uart("uart1", U5500_UART1_BASE, IRQ_DB5500_UART1, plat)
-#define db5500_add_uart2(plat) \
-	dbx500_add_uart("uart2", U5500_UART2_BASE, IRQ_DB5500_UART2, plat)
-#define db5500_add_uart3(plat) \
-	dbx500_add_uart("uart3", U5500_UART3_BASE, IRQ_DB5500_UART3, plat)
+#define db5500_add_uart0(parent, plat) \
+	dbx500_add_uart(parent, "uart0", U5500_UART0_BASE, \
+			IRQ_DB5500_UART0, plat)
+#define db5500_add_uart1(parent, plat) \
+	dbx500_add_uart(parent, "uart1", U5500_UART1_BASE, \
+			IRQ_DB5500_UART1, plat)
+#define db5500_add_uart2(parent, plat) \
+	dbx500_add_uart(parent, "uart2", U5500_UART2_BASE, \
+			IRQ_DB5500_UART2, plat)
+#define db5500_add_uart3(parent, plat) \
+	dbx500_add_uart(parent, "uart3", U5500_UART3_BASE, \
+			IRQ_DB5500_UART3, plat)
 
 #endif
diff --git a/arch/arm/mach-ux500/devices-db8500.h b/arch/arm/mach-ux500/devices-db8500.h
index cbd4a9ae810..9fd93e9da52 100644
--- a/arch/arm/mach-ux500/devices-db8500.h
+++ b/arch/arm/mach-ux500/devices-db8500.h
@@ -14,88 +14,114 @@ struct ske_keypad_platform_data;
 struct pl022_ssp_controller;
 
 static inline struct platform_device *
-db8500_add_ske_keypad(struct ske_keypad_platform_data *pdata)
+db8500_add_ske_keypad(struct device *parent,
+		      struct ske_keypad_platform_data *pdata,
+		      size_t size)
 {
-	return dbx500_add_platform_device_4k1irq("nmk-ske-keypad", -1,
-						 U8500_SKE_BASE,
-						 IRQ_DB8500_KB, pdata);
+	struct resource resources[] = {
+		DEFINE_RES_MEM(U8500_SKE_BASE, SZ_4K),
+		DEFINE_RES_IRQ(IRQ_DB8500_KB),
+	};
+
+	return platform_device_register_resndata(parent, "nmk-ske-keypad", -1,
+						 resources, 2, pdata, size);
 }
 
 static inline struct amba_device *
-db8500_add_ssp(const char *name, resource_size_t base, int irq,
-	       struct pl022_ssp_controller *pdata)
+db8500_add_ssp(struct device *parent, const char *name, resource_size_t base,
+	       int irq, struct pl022_ssp_controller *pdata)
 {
-	return dbx500_add_amba_device(name, base, irq, pdata, 0);
+	return dbx500_add_amba_device(parent, name, base, irq, pdata, 0);
 }
 
 
-#define db8500_add_i2c0(pdata) \
-	dbx500_add_i2c(0, U8500_I2C0_BASE, IRQ_DB8500_I2C0, pdata)
-#define db8500_add_i2c1(pdata) \
-	dbx500_add_i2c(1, U8500_I2C1_BASE, IRQ_DB8500_I2C1, pdata)
-#define db8500_add_i2c2(pdata) \
-	dbx500_add_i2c(2, U8500_I2C2_BASE, IRQ_DB8500_I2C2, pdata)
-#define db8500_add_i2c3(pdata) \
-	dbx500_add_i2c(3, U8500_I2C3_BASE, IRQ_DB8500_I2C3, pdata)
-#define db8500_add_i2c4(pdata) \
-	dbx500_add_i2c(4, U8500_I2C4_BASE, IRQ_DB8500_I2C4, pdata)
-
-#define db8500_add_msp0_i2s(pdata) \
-	dbx500_add_msp_i2s(0, U8500_MSP0_BASE, IRQ_DB8500_MSP0, pdata)
-#define db8500_add_msp1_i2s(pdata) \
-	dbx500_add_msp_i2s(1, U8500_MSP1_BASE, IRQ_DB8500_MSP1, pdata)
-#define db8500_add_msp2_i2s(pdata) \
-	dbx500_add_msp_i2s(2, U8500_MSP2_BASE, IRQ_DB8500_MSP2, pdata)
-#define db8500_add_msp3_i2s(pdata) \
-	dbx500_add_msp_i2s(3, U8500_MSP3_BASE, IRQ_DB8500_MSP1, pdata)
-
-#define db8500_add_msp0_spi(pdata) \
-	dbx500_add_msp_spi("msp0", U8500_MSP0_BASE, IRQ_DB8500_MSP0, pdata)
-#define db8500_add_msp1_spi(pdata) \
-	dbx500_add_msp_spi("msp1", U8500_MSP1_BASE, IRQ_DB8500_MSP1, pdata)
-#define db8500_add_msp2_spi(pdata) \
-	dbx500_add_msp_spi("msp2", U8500_MSP2_BASE, IRQ_DB8500_MSP2, pdata)
-#define db8500_add_msp3_spi(pdata) \
-	dbx500_add_msp_spi("msp3", U8500_MSP3_BASE, IRQ_DB8500_MSP1, pdata)
-
-#define db8500_add_rtc() \
-	dbx500_add_rtc(U8500_RTC_BASE, IRQ_DB8500_RTC);
-
-#define db8500_add_usb(rx_cfg, tx_cfg) \
-	ux500_add_usb(U8500_USBOTG_BASE, IRQ_DB8500_USBOTG, rx_cfg, tx_cfg)
-
-#define db8500_add_sdi0(pdata, pid) \
-	dbx500_add_sdi("sdi0", U8500_SDI0_BASE, IRQ_DB8500_SDMMC0, pdata, pid)
-#define db8500_add_sdi1(pdata, pid) \
-	dbx500_add_sdi("sdi1", U8500_SDI1_BASE, IRQ_DB8500_SDMMC1, pdata, pid)
-#define db8500_add_sdi2(pdata, pid) \
-	dbx500_add_sdi("sdi2", U8500_SDI2_BASE, IRQ_DB8500_SDMMC2, pdata, pid)
-#define db8500_add_sdi3(pdata, pid) \
-	dbx500_add_sdi("sdi3", U8500_SDI3_BASE, IRQ_DB8500_SDMMC3, pdata, pid)
-#define db8500_add_sdi4(pdata, pid) \
-	dbx500_add_sdi("sdi4", U8500_SDI4_BASE, IRQ_DB8500_SDMMC4, pdata, pid)
-#define db8500_add_sdi5(pdata, pid) \
-	dbx500_add_sdi("sdi5", U8500_SDI5_BASE, IRQ_DB8500_SDMMC5, pdata, pid)
-
-#define db8500_add_ssp0(pdata) \
-	db8500_add_ssp("ssp0", U8500_SSP0_BASE, IRQ_DB8500_SSP0, pdata)
-#define db8500_add_ssp1(pdata) \
-	db8500_add_ssp("ssp1", U8500_SSP1_BASE, IRQ_DB8500_SSP1, pdata)
-
-#define db8500_add_spi0(pdata) \
-	dbx500_add_spi("spi0", U8500_SPI0_BASE, IRQ_DB8500_SPI0, pdata, 0)
-#define db8500_add_spi1(pdata) \
-	dbx500_add_spi("spi1", U8500_SPI1_BASE, IRQ_DB8500_SPI1, pdata, 0)
-#define db8500_add_spi2(pdata) \
-	dbx500_add_spi("spi2", U8500_SPI2_BASE, IRQ_DB8500_SPI2, pdata, 0)
-#define db8500_add_spi3(pdata) \
-	dbx500_add_spi("spi3", U8500_SPI3_BASE, IRQ_DB8500_SPI3, pdata, 0)
-
-#define db8500_add_uart0(pdata) \
-	dbx500_add_uart("uart0", U8500_UART0_BASE, IRQ_DB8500_UART0, pdata)
-#define db8500_add_uart1(pdata) \
-	dbx500_add_uart("uart1", U8500_UART1_BASE, IRQ_DB8500_UART1, pdata)
-#define db8500_add_uart2(pdata) \
-	dbx500_add_uart("uart2", U8500_UART2_BASE, IRQ_DB8500_UART2, pdata)
+#define db8500_add_i2c0(parent, pdata) \
+	dbx500_add_i2c(parent, 0, U8500_I2C0_BASE, IRQ_DB8500_I2C0, pdata)
+#define db8500_add_i2c1(parent, pdata) \
+	dbx500_add_i2c(parent, 1, U8500_I2C1_BASE, IRQ_DB8500_I2C1, pdata)
+#define db8500_add_i2c2(parent, pdata) \
+	dbx500_add_i2c(parent, 2, U8500_I2C2_BASE, IRQ_DB8500_I2C2, pdata)
+#define db8500_add_i2c3(parent, pdata) \
+	dbx500_add_i2c(parent, 3, U8500_I2C3_BASE, IRQ_DB8500_I2C3, pdata)
+#define db8500_add_i2c4(parent, pdata) \
+	dbx500_add_i2c(parent, 4, U8500_I2C4_BASE, IRQ_DB8500_I2C4, pdata)
+
+#define db8500_add_msp0_i2s(parent, pdata) \
+	dbx500_add_msp_i2s(parent, 0, U8500_MSP0_BASE, IRQ_DB8500_MSP0, pdata)
+#define db8500_add_msp1_i2s(parent, pdata) \
+	dbx500_add_msp_i2s(parent, 1, U8500_MSP1_BASE, IRQ_DB8500_MSP1, pdata)
+#define db8500_add_msp2_i2s(parent, pdata) \
+	dbx500_add_msp_i2s(parent, 2, U8500_MSP2_BASE, IRQ_DB8500_MSP2, pdata)
+#define db8500_add_msp3_i2s(parent, pdata) \
+	dbx500_add_msp_i2s(parent, 3, U8500_MSP3_BASE, IRQ_DB8500_MSP1, pdata)
+
+#define db8500_add_msp0_spi(parent, pdata) \
+	dbx500_add_msp_spi(parent, "msp0", U8500_MSP0_BASE, \
+			   IRQ_DB8500_MSP0, pdata)
+#define db8500_add_msp1_spi(parent, pdata) \
+	dbx500_add_msp_spi(parent, "msp1", U8500_MSP1_BASE, \
+			   IRQ_DB8500_MSP1, pdata)
+#define db8500_add_msp2_spi(parent, pdata) \
+	dbx500_add_msp_spi(parent, "msp2", U8500_MSP2_BASE, \
+			   IRQ_DB8500_MSP2, pdata)
+#define db8500_add_msp3_spi(parent, pdata) \
+	dbx500_add_msp_spi(parent, "msp3", U8500_MSP3_BASE, \
+			   IRQ_DB8500_MSP1, pdata)
+
+#define db8500_add_rtc(parent) \
+	dbx500_add_rtc(parent, U8500_RTC_BASE, IRQ_DB8500_RTC);
+
+#define db8500_add_usb(parent, rx_cfg, tx_cfg) \
+	ux500_add_usb(parent, U8500_USBOTG_BASE, \
+		      IRQ_DB8500_USBOTG, rx_cfg, tx_cfg)
+
+#define db8500_add_sdi0(parent, pdata, pid) \
+	dbx500_add_sdi(parent, "sdi0", U8500_SDI0_BASE, \
+		       IRQ_DB8500_SDMMC0, pdata, pid)
+#define db8500_add_sdi1(parent, pdata, pid) \
+	dbx500_add_sdi(parent, "sdi1", U8500_SDI1_BASE, \
+		       IRQ_DB8500_SDMMC1, pdata, pid)
+#define db8500_add_sdi2(parent, pdata, pid) \
+	dbx500_add_sdi(parent, "sdi2", U8500_SDI2_BASE, \
+		       IRQ_DB8500_SDMMC2, pdata, pid)
+#define db8500_add_sdi3(parent, pdata, pid) \
+	dbx500_add_sdi(parent, "sdi3", U8500_SDI3_BASE, \
+		       IRQ_DB8500_SDMMC3, pdata, pid)
+#define db8500_add_sdi4(parent, pdata, pid) \
+	dbx500_add_sdi(parent, "sdi4", U8500_SDI4_BASE, \
+		       IRQ_DB8500_SDMMC4, pdata, pid)
+#define db8500_add_sdi5(parent, pdata, pid) \
+	dbx500_add_sdi(parent, "sdi5", U8500_SDI5_BASE, \
+		       IRQ_DB8500_SDMMC5, pdata, pid)
+
+#define db8500_add_ssp0(parent, pdata) \
+	db8500_add_ssp(parent, "ssp0", U8500_SSP0_BASE, \
+		       IRQ_DB8500_SSP0, pdata)
+#define db8500_add_ssp1(parent, pdata) \
+	db8500_add_ssp(parent, "ssp1", U8500_SSP1_BASE, \
+		       IRQ_DB8500_SSP1, pdata)
+
+#define db8500_add_spi0(parent, pdata) \
+	dbx500_add_spi(parent, "spi0", U8500_SPI0_BASE, \
+		       IRQ_DB8500_SPI0, pdata, 0)
+#define db8500_add_spi1(parent, pdata) \
+	dbx500_add_spi(parent, "spi1", U8500_SPI1_BASE, \
+		       IRQ_DB8500_SPI1, pdata, 0)
+#define db8500_add_spi2(parent, pdata) \
+	dbx500_add_spi(parent, "spi2", U8500_SPI2_BASE, \
+		       IRQ_DB8500_SPI2, pdata, 0)
+#define db8500_add_spi3(parent, pdata) \
+	dbx500_add_spi(parent, "spi3", U8500_SPI3_BASE, \
+		       IRQ_DB8500_SPI3, pdata, 0)
+
+#define db8500_add_uart0(parent, pdata) \
+	dbx500_add_uart(parent, "uart0", U8500_UART0_BASE, \
+			IRQ_DB8500_UART0, pdata)
+#define db8500_add_uart1(parent, pdata) \
+	dbx500_add_uart(parent, "uart1", U8500_UART1_BASE, \
+			IRQ_DB8500_UART1, pdata)
+#define db8500_add_uart2(parent, pdata) \
+	dbx500_add_uart(parent, "uart2", U8500_UART2_BASE, \
+			IRQ_DB8500_UART2, pdata)
 
 #endif
diff --git a/arch/arm/mach-ux500/dma-db5500.c b/arch/arm/mach-ux500/dma-db5500.c
index 1cfab68ae41..41e9470fa0e 100644
--- a/arch/arm/mach-ux500/dma-db5500.c
+++ b/arch/arm/mach-ux500/dma-db5500.c
@@ -125,10 +125,11 @@ static struct platform_device dma40_device = {
 	.resource	= dma40_resources
 };
 
-void __init db5500_dma_init(void)
+void __init db5500_dma_init(struct device *parent)
 {
 	int ret;
 
+	dma40_device.dev.parent = parent;
 	ret = platform_device_register(&dma40_device);
 	if (ret)
 		dev_err(&dma40_device.dev, "unable to register device: %d\n", ret);
diff --git a/arch/arm/mach-ux500/include/mach/db8500-regs.h b/arch/arm/mach-ux500/include/mach/db8500-regs.h
index 80e10f50282..9ec20b96d8f 100644
--- a/arch/arm/mach-ux500/include/mach/db8500-regs.h
+++ b/arch/arm/mach-ux500/include/mach/db8500-regs.h
@@ -161,4 +161,7 @@
 #define U8500_MODEM_BASE	0xe000000
 #define U8500_APE_BASE		0x6000000
 
+/* SoC identification number information */
+#define U8500_BB_UID_BASE      (U8500_BACKUPRAM1_BASE + 0xFC0)
+
 #endif
diff --git a/arch/arm/mach-ux500/include/mach/setup.h b/arch/arm/mach-ux500/include/mach/setup.h
index a7d363fdb4c..3dc00ffa7bf 100644
--- a/arch/arm/mach-ux500/include/mach/setup.h
+++ b/arch/arm/mach-ux500/include/mach/setup.h
@@ -18,17 +18,16 @@ void __init ux500_map_io(void);
 extern void __init u5500_map_io(void);
 extern void __init u8500_map_io(void);
 
-extern void __init u5500_init_devices(void);
-extern void __init u8500_init_devices(void);
+extern struct device * __init u5500_init_devices(void);
+extern struct device * __init u8500_init_devices(void);
 
 extern void __init ux500_init_irq(void);
 
-extern void __init u5500_sdi_init(void);
+extern void __init u5500_sdi_init(struct device *parent);
 
-extern void __init db5500_dma_init(void);
+extern void __init db5500_dma_init(struct device *parent);
 
-/* We re-use nomadik_timer for this platform */
-extern void nmdk_timer_init(void);
+extern struct device *ux500_soc_device_init(const char *soc_id);
 
 struct amba_device;
 extern void __init amba_add_devices(struct amba_device *devs[], int num);
diff --git a/arch/arm/mach-ux500/include/mach/usb.h b/arch/arm/mach-ux500/include/mach/usb.h
index d3739d41881..4c1cc50a595 100644
--- a/arch/arm/mach-ux500/include/mach/usb.h
+++ b/arch/arm/mach-ux500/include/mach/usb.h
@@ -20,6 +20,6 @@ struct ux500_musb_board_data {
 	bool (*dma_filter)(struct dma_chan *chan, void *filter_param);
 };
 
-void ux500_add_usb(resource_size_t base, int irq, int *dma_rx_cfg,
-	int *dma_tx_cfg);
+void ux500_add_usb(struct device *parent, resource_size_t base,
+		   int irq, int *dma_rx_cfg, int *dma_tx_cfg);
 #endif
diff --git a/arch/arm/mach-ux500/localtimer.c b/arch/arm/mach-ux500/localtimer.c
deleted file mode 100644
index 5ba113309a0..00000000000
--- a/arch/arm/mach-ux500/localtimer.c
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright (C) 2008-2009 ST-Ericsson
- * Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
- *
- * This file is heavily based on relaview platform, almost a copy.
- *
- * Copyright (C) 2002 ARM Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/clockchips.h>
-
-#include <asm/irq.h>
-#include <asm/smp_twd.h>
-#include <asm/localtimer.h>
-
-/*
- * Setup the local clock events for a CPU.
- */
-int __cpuinit local_timer_setup(struct clock_event_device *evt)
-{
-	evt->irq = IRQ_LOCALTIMER;
-	twd_timer_setup(evt);
-	return 0;
-}
diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c
index aea467d04ff..d37df98b5c3 100644
--- a/arch/arm/mach-ux500/timer.c
+++ b/arch/arm/mach-ux500/timer.c
@@ -7,29 +7,52 @@
 #include <linux/io.h>
 #include <linux/errno.h>
 #include <linux/clksrc-dbx500-prcmu.h>
+#include <linux/of.h>
 
-#include <asm/localtimer.h>
+#include <asm/smp_twd.h>
 
 #include <plat/mtu.h>
 
 #include <mach/setup.h>
 #include <mach/hardware.h>
+#include <mach/irqs.h>
+
+#ifdef CONFIG_HAVE_ARM_TWD
+static DEFINE_TWD_LOCAL_TIMER(u5500_twd_local_timer,
+			      U5500_TWD_BASE, IRQ_LOCALTIMER);
+static DEFINE_TWD_LOCAL_TIMER(u8500_twd_local_timer,
+			      U8500_TWD_BASE, IRQ_LOCALTIMER);
+
+static void __init ux500_twd_init(void)
+{
+	struct twd_local_timer *twd_local_timer;
+	int err;
+
+	twd_local_timer = cpu_is_u5500() ? &u5500_twd_local_timer :
+					   &u8500_twd_local_timer;
+
+	if (of_have_populated_dt())
+		twd_local_timer_of_register();
+	else {
+		err = twd_local_timer_register(twd_local_timer);
+		if (err)
+			pr_err("twd_local_timer_register failed %d\n", err);
+	}
+}
+#else
+#define ux500_twd_init()	do { } while(0)
+#endif
 
 static void __init ux500_timer_init(void)
 {
+	void __iomem *mtu_timer_base;
 	void __iomem *prcmu_timer_base;
 
 	if (cpu_is_u5500()) {
-#ifdef CONFIG_LOCAL_TIMERS
-		twd_base = __io_address(U5500_TWD_BASE);
-#endif
-		mtu_base = __io_address(U5500_MTU0_BASE);
+		mtu_timer_base = __io_address(U5500_MTU0_BASE);
 		prcmu_timer_base = __io_address(U5500_PRCMU_TIMER_3_BASE);
 	} else if (cpu_is_u8500()) {
-#ifdef CONFIG_LOCAL_TIMERS
-		twd_base = __io_address(U8500_TWD_BASE);
-#endif
-		mtu_base = __io_address(U8500_MTU0_BASE);
+		mtu_timer_base = __io_address(U8500_MTU0_BASE);
 		prcmu_timer_base = __io_address(U8500_PRCMU_TIMER_4_BASE);
 	} else {
 		ux500_unknown_soc();
@@ -52,8 +75,9 @@ static void __init ux500_timer_init(void)
 	 *
 	 */
 
-	nmdk_timer_init();
+	nmdk_timer_init(mtu_timer_base);
 	clksrc_dbx500_prcmu_init(prcmu_timer_base);
+	ux500_twd_init();
 }
 
 static void ux500_timer_reset(void)
diff --git a/arch/arm/mach-ux500/usb.c b/arch/arm/mach-ux500/usb.c
index 9f9e1c20306..a74af389bc6 100644
--- a/arch/arm/mach-ux500/usb.c
+++ b/arch/arm/mach-ux500/usb.c
@@ -7,6 +7,7 @@
 #include <linux/platform_device.h>
 #include <linux/usb/musb.h>
 #include <linux/dma-mapping.h>
+
 #include <plat/ste_dma40.h>
 #include <mach/hardware.h>
 #include <mach/usb.h>
@@ -140,8 +141,8 @@ static inline void ux500_usb_dma_update_tx_ch_config(int *dst_dev_type)
 		musb_dma_tx_ch[idx].dst_dev_type = dst_dev_type[idx];
 }
 
-void ux500_add_usb(resource_size_t base, int irq, int *dma_rx_cfg,
-	int *dma_tx_cfg)
+void ux500_add_usb(struct device *parent, resource_size_t base, int irq,
+		   int *dma_rx_cfg, int *dma_tx_cfg)
 {
 	ux500_musb_device.resource[0].start = base;
 	ux500_musb_device.resource[0].end = base + SZ_64K - 1;
@@ -151,5 +152,7 @@ void ux500_add_usb(resource_size_t base, int irq, int *dma_rx_cfg,
 	ux500_usb_dma_update_rx_ch_config(dma_rx_cfg);
 	ux500_usb_dma_update_tx_ch_config(dma_tx_cfg);
 
+	ux500_musb_device.dev.parent = parent;
+
 	platform_device_register(&ux500_musb_device);
 }
diff --git a/arch/arm/mach-vexpress/ct-ca9x4.c b/arch/arm/mach-vexpress/ct-ca9x4.c
index 73791f01029..c65cc3b462a 100644
--- a/arch/arm/mach-vexpress/ct-ca9x4.c
+++ b/arch/arm/mach-vexpress/ct-ca9x4.c
@@ -42,15 +42,26 @@ static struct map_desc ct_ca9x4_io_desc[] __initdata = {
 static void __init ct_ca9x4_map_io(void)
 {
 	iotable_init(ct_ca9x4_io_desc, ARRAY_SIZE(ct_ca9x4_io_desc));
-#ifdef CONFIG_LOCAL_TIMERS
-	twd_base = ioremap(A9_MPCORE_TWD, SZ_32);
-#endif
 }
 
+#ifdef CONFIG_HAVE_ARM_TWD
+static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, A9_MPCORE_TWD, IRQ_LOCALTIMER);
+
+static void __init ca9x4_twd_init(void)
+{
+	int err = twd_local_timer_register(&twd_local_timer);
+	if (err)
+		pr_err("twd_local_timer_register failed %d\n", err);
+}
+#else
+#define ca9x4_twd_init()	do {} while(0)
+#endif
+
 static void __init ct_ca9x4_init_irq(void)
 {
 	gic_init(0, 29, ioremap(A9_MPCORE_GIC_DIST, SZ_4K),
 		 ioremap(A9_MPCORE_GIC_CPU, SZ_256));
+	ca9x4_twd_init();
 }
 
 static void ct_ca9x4_clcd_enable(struct clcd_fb *fb)
diff --git a/arch/arm/plat-nomadik/include/plat/mtu.h b/arch/arm/plat-nomadik/include/plat/mtu.h
index 6508e7694a4..582641f3dc0 100644
--- a/arch/arm/plat-nomadik/include/plat/mtu.h
+++ b/arch/arm/plat-nomadik/include/plat/mtu.h
@@ -1,9 +1,7 @@
 #ifndef __PLAT_MTU_H
 #define __PLAT_MTU_H
 
-/* should be set by the platform code */
-extern void __iomem *mtu_base;
-
+void nmdk_timer_init(void __iomem *base);
 void nmdk_clkevt_reset(void);
 void nmdk_clksrc_reset(void);
 
diff --git a/arch/arm/plat-nomadik/timer.c b/arch/arm/plat-nomadik/timer.c
index ad1b45b605a..9222e5522a4 100644
--- a/arch/arm/plat-nomadik/timer.c
+++ b/arch/arm/plat-nomadik/timer.c
@@ -21,12 +21,6 @@
 #include <asm/sched_clock.h>
 
 /*
- * Guaranteed runtime conversion range in seconds for
- * the clocksource and clockevent.
- */
-#define MTU_MIN_RANGE 4
-
-/*
  * The MTU device hosts four different counters, with 4 set of
  * registers. These are register names.
  */
@@ -66,12 +60,11 @@
 #define MTU_PCELL2	0xff8
 #define MTU_PCELL3	0xffC
 
+static void __iomem *mtu_base;
 static bool clkevt_periodic;
 static u32 clk_prescale;
 static u32 nmdk_cycle;		/* write-once */
 
-void __iomem *mtu_base; /* Assigned by machine code */
-
 #ifdef CONFIG_NOMADIK_MTU_SCHED_CLOCK
 /*
  * Override the global weak sched_clock symbol with this
@@ -103,7 +96,6 @@ static int nmdk_clkevt_next(unsigned long evt, struct clock_event_device *ev)
 void nmdk_clkevt_reset(void)
 {
 	if (clkevt_periodic) {
-
 		/* Timer: configure load and background-load, and fire it up */
 		writel(nmdk_cycle, mtu_base + MTU_LR(1));
 		writel(nmdk_cycle, mtu_base + MTU_BGLR(1));
@@ -121,7 +113,6 @@ void nmdk_clkevt_reset(void)
 static void nmdk_clkevt_mode(enum clock_event_mode mode,
 			     struct clock_event_device *dev)
 {
-
 	switch (mode) {
 	case CLOCK_EVT_MODE_PERIODIC:
 		clkevt_periodic = true;
@@ -183,15 +174,16 @@ void nmdk_clksrc_reset(void)
 	       mtu_base + MTU_CR(0));
 }
 
-void __init nmdk_timer_init(void)
+void __init nmdk_timer_init(void __iomem *base)
 {
 	unsigned long rate;
 	struct clk *clk0;
 
+	mtu_base = base;
 	clk0 = clk_get_sys("mtu0", NULL);
 	BUG_ON(IS_ERR(clk0));
-
-	clk_enable(clk0);
+	BUG_ON(clk_prepare(clk0) < 0);
+	BUG_ON(clk_enable(clk0) < 0);
 
 	/*
 	 * Tick rate is 2.4MHz for Nomadik and 2.4Mhz, 100MHz or 133 MHz
@@ -224,17 +216,8 @@ void __init nmdk_timer_init(void)
 	setup_sched_clock(nomadik_read_sched_clock, 32, rate);
 #endif
 
-	/* Timer 1 is used for events */
-
-	clockevents_calc_mult_shift(&nmdk_clkevt, rate, MTU_MIN_RANGE);
-
-	nmdk_clkevt.max_delta_ns =
-		clockevent_delta2ns(0xffffffff, &nmdk_clkevt);
-	nmdk_clkevt.min_delta_ns =
-		clockevent_delta2ns(0x00000002, &nmdk_clkevt);
-	nmdk_clkevt.cpumask	= cpumask_of(0);
-
-	/* Register irq and clockevents */
+	/* Timer 1 is used for events, register irq and clockevents */
 	setup_irq(IRQ_MTU0, &nmdk_timer_irq);
-	clockevents_register_device(&nmdk_clkevt);
+	nmdk_clkevt.cpumask = cpumask_of(0);
+	clockevents_config_and_register(&nmdk_clkevt, rate, 2, 0xffffffffU);
 }
diff --git a/arch/arm/plat-versatile/Makefile b/arch/arm/plat-versatile/Makefile
index 69714db47c3..a5cb1945bdc 100644
--- a/arch/arm/plat-versatile/Makefile
+++ b/arch/arm/plat-versatile/Makefile
@@ -1,5 +1,4 @@
 obj-y	:= clock.o
-obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o
 obj-$(CONFIG_PLAT_VERSATILE_CLCD) += clcd.o
 obj-$(CONFIG_PLAT_VERSATILE_FPGA_IRQ) += fpga-irq.o
 obj-$(CONFIG_PLAT_VERSATILE_LEDS) += leds.o
diff --git a/arch/arm/plat-versatile/localtimer.c b/arch/arm/plat-versatile/localtimer.c
deleted file mode 100644
index e1566879315..00000000000
--- a/arch/arm/plat-versatile/localtimer.c
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- *  linux/arch/arm/plat-versatile/localtimer.c
- *
- *  Copyright (C) 2002 ARM Ltd.
- *  All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/clockchips.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-
-#include <asm/smp_twd.h>
-#include <asm/localtimer.h>
-#include <mach/irqs.h>
-
-const static struct of_device_id twd_of_match[] __initconst = {
-       { .compatible = "arm,cortex-a9-twd-timer",      },
-       { .compatible = "arm,cortex-a5-twd-timer",      },
-       { .compatible = "arm,arm11mp-twd-timer",        },
-       { },
-};
-
-/*
- * Setup the local clock events for a CPU.
- */
-int __cpuinit local_timer_setup(struct clock_event_device *evt)
-{
-#if defined(CONFIG_OF)
-	static int dt_node_probed;
-
-	/* Look for TWD node only once */
-	if (!dt_node_probed) {
-		struct device_node *node = of_find_matching_node(NULL,
-				twd_of_match);
-
-		if (node)
-			twd_base = of_iomap(node, 0);
-
-		dt_node_probed = 1;
-	}
-#endif
-	if (!twd_base)
-		return -ENXIO;
-
-	evt->irq = IRQ_LOCALTIMER;
-	twd_timer_setup(evt);
-	return 0;
-}
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index e0829a6a466..ab39bb20a42 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -179,6 +179,9 @@ config ARCH_HAS_DEFAULT_IDLE
 config ARCH_HAS_CACHE_LINE_SIZE
 	def_bool y
 
+config ARCH_HAS_CPU_AUTOPROBE
+	def_bool y
+
 config HAVE_SETUP_PER_CPU_AREA
 	def_bool y
 
diff --git a/arch/x86/crypto/aesni-intel_glue.c b/arch/x86/crypto/aesni-intel_glue.c
index 545d0ce5981..b3350bd32c6 100644
--- a/arch/x86/crypto/aesni-intel_glue.c
+++ b/arch/x86/crypto/aesni-intel_glue.c
@@ -28,6 +28,7 @@
 #include <crypto/aes.h>
 #include <crypto/cryptd.h>
 #include <crypto/ctr.h>
+#include <asm/cpu_device_id.h>
 #include <asm/i387.h>
 #include <asm/aes.h>
 #include <crypto/scatterwalk.h>
@@ -1253,14 +1254,19 @@ static struct crypto_alg __rfc4106_alg = {
 };
 #endif
 
+
+static const struct x86_cpu_id aesni_cpu_id[] = {
+	X86_FEATURE_MATCH(X86_FEATURE_AES),
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, aesni_cpu_id);
+
 static int __init aesni_init(void)
 {
 	int err;
 
-	if (!cpu_has_aes) {
-		printk(KERN_INFO "Intel AES-NI instructions are not detected.\n");
+	if (!x86_match_cpu(aesni_cpu_id))
 		return -ENODEV;
-	}
 
 	if ((err = crypto_fpu_init()))
 		goto fpu_err;
diff --git a/arch/x86/crypto/crc32c-intel.c b/arch/x86/crypto/crc32c-intel.c
index b9d00261703..493f959261f 100644
--- a/arch/x86/crypto/crc32c-intel.c
+++ b/arch/x86/crypto/crc32c-intel.c
@@ -31,6 +31,7 @@
 #include <crypto/internal/hash.h>
 
 #include <asm/cpufeature.h>
+#include <asm/cpu_device_id.h>
 
 #define CHKSUM_BLOCK_SIZE	1
 #define CHKSUM_DIGEST_SIZE	4
@@ -173,13 +174,17 @@ static struct shash_alg alg = {
 	}
 };
 
+static const struct x86_cpu_id crc32c_cpu_id[] = {
+	X86_FEATURE_MATCH(X86_FEATURE_XMM4_2),
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, crc32c_cpu_id);
 
 static int __init crc32c_intel_mod_init(void)
 {
-	if (cpu_has_xmm4_2)
-		return crypto_register_shash(&alg);
-	else
+	if (!x86_match_cpu(crc32c_cpu_id))
 		return -ENODEV;
+	return crypto_register_shash(&alg);
 }
 
 static void __exit crc32c_intel_mod_fini(void)
diff --git a/arch/x86/crypto/ghash-clmulni-intel_glue.c b/arch/x86/crypto/ghash-clmulni-intel_glue.c
index 976aa64d9a2..b4bf0a63b52 100644
--- a/arch/x86/crypto/ghash-clmulni-intel_glue.c
+++ b/arch/x86/crypto/ghash-clmulni-intel_glue.c
@@ -20,6 +20,7 @@
 #include <crypto/gf128mul.h>
 #include <crypto/internal/hash.h>
 #include <asm/i387.h>
+#include <asm/cpu_device_id.h>
 
 #define GHASH_BLOCK_SIZE	16
 #define GHASH_DIGEST_SIZE	16
@@ -294,15 +295,18 @@ static struct ahash_alg ghash_async_alg = {
 	},
 };
 
+static const struct x86_cpu_id pcmul_cpu_id[] = {
+	X86_FEATURE_MATCH(X86_FEATURE_PCLMULQDQ), /* Pickle-Mickle-Duck */
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, pcmul_cpu_id);
+
 static int __init ghash_pclmulqdqni_mod_init(void)
 {
 	int err;
 
-	if (!cpu_has_pclmulqdq) {
-		printk(KERN_INFO "Intel PCLMULQDQ-NI instructions are not"
-		       " detected.\n");
+	if (!x86_match_cpu(pcmul_cpu_id))
 		return -ENODEV;
-	}
 
 	err = crypto_register_shash(&ghash_alg);
 	if (err)
diff --git a/arch/x86/include/asm/cpu_device_id.h b/arch/x86/include/asm/cpu_device_id.h
new file mode 100644
index 00000000000..ff501e511d9
--- /dev/null
+++ b/arch/x86/include/asm/cpu_device_id.h
@@ -0,0 +1,13 @@
+#ifndef _CPU_DEVICE_ID
+#define _CPU_DEVICE_ID 1
+
+/*
+ * Declare drivers belonging to specific x86 CPUs
+ * Similar in spirit to pci_device_id and related PCI functions
+ */
+
+#include <linux/mod_devicetable.h>
+
+extern const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match);
+
+#endif
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 8d67d428b0f..dcb839eebc7 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -177,6 +177,7 @@
 #define X86_FEATURE_PLN		(7*32+ 5) /* Intel Power Limit Notification */
 #define X86_FEATURE_PTS		(7*32+ 6) /* Intel Package Thermal Status */
 #define X86_FEATURE_DTS		(7*32+ 7) /* Digital Thermal Sensor */
+#define X86_FEATURE_HW_PSTATE	(7*32+ 8) /* AMD HW-PState */
 
 /* Virtualization flags: Linux defined, word 8 */
 #define X86_FEATURE_TPR_SHADOW  (8*32+ 0) /* Intel TPR Shadow */
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index 25f24dccdcf..6ab6aa2fdfd 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -16,6 +16,7 @@ obj-y			:= intel_cacheinfo.o scattered.o topology.o
 obj-y			+= proc.o capflags.o powerflags.o common.o
 obj-y			+= vmware.o hypervisor.o sched.o mshyperv.o
 obj-y			+= rdrand.o
+obj-y			+= match.o
 
 obj-$(CONFIG_X86_32)	+= bugs.o
 obj-$(CONFIG_X86_64)	+= bugs_64.o
diff --git a/arch/x86/kernel/cpu/match.c b/arch/x86/kernel/cpu/match.c
new file mode 100644
index 00000000000..940e2d48307
--- /dev/null
+++ b/arch/x86/kernel/cpu/match.c
@@ -0,0 +1,92 @@
+#include <asm/cpu_device_id.h>
+#include <asm/processor.h>
+#include <linux/cpu.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+/**
+ * x86_match_cpu - match current CPU again an array of x86_cpu_ids
+ * @match: Pointer to array of x86_cpu_ids. Last entry terminated with
+ *         {}.
+ *
+ * Return the entry if the current CPU matches the entries in the
+ * passed x86_cpu_id match table. Otherwise NULL.  The match table
+ * contains vendor (X86_VENDOR_*), family, model and feature bits or
+ * respective wildcard entries.
+ *
+ * A typical table entry would be to match a specific CPU
+ * { X86_VENDOR_INTEL, 6, 0x12 }
+ * or to match a specific CPU feature
+ * { X86_FEATURE_MATCH(X86_FEATURE_FOOBAR) }
+ *
+ * Fields can be wildcarded with %X86_VENDOR_ANY, %X86_FAMILY_ANY,
+ * %X86_MODEL_ANY, %X86_FEATURE_ANY or 0 (except for vendor)
+ *
+ * Arrays used to match for this should also be declared using
+ * MODULE_DEVICE_TABLE(x86_cpu, ...)
+ *
+ * This always matches against the boot cpu, assuming models and features are
+ * consistent over all CPUs.
+ */
+const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match)
+{
+	const struct x86_cpu_id *m;
+	struct cpuinfo_x86 *c = &boot_cpu_data;
+
+	for (m = match; m->vendor | m->family | m->model | m->feature; m++) {
+		if (m->vendor != X86_VENDOR_ANY && c->x86_vendor != m->vendor)
+			continue;
+		if (m->family != X86_FAMILY_ANY && c->x86 != m->family)
+			continue;
+		if (m->model != X86_MODEL_ANY && c->x86_model != m->model)
+			continue;
+		if (m->feature != X86_FEATURE_ANY && !cpu_has(c, m->feature))
+			continue;
+		return m;
+	}
+	return NULL;
+}
+EXPORT_SYMBOL(x86_match_cpu);
+
+ssize_t arch_print_cpu_modalias(struct device *dev,
+				struct device_attribute *attr,
+				char *bufptr)
+{
+	int size = PAGE_SIZE;
+	int i, n;
+	char *buf = bufptr;
+
+	n = snprintf(buf, size, "x86cpu:vendor:%04X:family:%04X:"
+		     "model:%04X:feature:",
+		boot_cpu_data.x86_vendor,
+		boot_cpu_data.x86,
+		boot_cpu_data.x86_model);
+	size -= n;
+	buf += n;
+	size -= 2;
+	for (i = 0; i < NCAPINTS*32; i++) {
+		if (boot_cpu_has(i)) {
+			n = snprintf(buf, size, ",%04X", i);
+			if (n < 0) {
+				WARN(1, "x86 features overflow page\n");
+				break;
+			}
+			size -= n;
+			buf += n;
+		}
+	}
+	*buf++ = ',';
+	*buf++ = '\n';
+	return buf - bufptr;
+}
+
+int arch_cpu_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+	char *buf = kzalloc(PAGE_SIZE, GFP_KERNEL);
+	if (buf) {
+		arch_print_cpu_modalias(NULL, NULL, buf);
+		add_uevent_var(env, "MODALIAS=%s", buf);
+		kfree(buf);
+	}
+	return 0;
+}
diff --git a/arch/x86/kernel/cpu/scattered.c b/arch/x86/kernel/cpu/scattered.c
index c7f64e6f537..addf9e82a7f 100644
--- a/arch/x86/kernel/cpu/scattered.c
+++ b/arch/x86/kernel/cpu/scattered.c
@@ -40,6 +40,7 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
 		{ X86_FEATURE_EPB,		CR_ECX, 3, 0x00000006, 0 },
 		{ X86_FEATURE_XSAVEOPT,		CR_EAX,	0, 0x0000000d, 1 },
 		{ X86_FEATURE_CPB,		CR_EDX, 9, 0x80000007, 0 },
+		{ X86_FEATURE_HW_PSTATE,	CR_EDX, 7, 0x80000007, 0 },
 		{ X86_FEATURE_NPT,		CR_EDX, 0, 0x8000000a, 0 },
 		{ X86_FEATURE_LBRV,		CR_EDX, 1, 0x8000000a, 0 },
 		{ X86_FEATURE_SVML,		CR_EDX, 2, 0x8000000a, 0 },
diff --git a/arch/x86/kernel/microcode_core.c b/arch/x86/kernel/microcode_core.c
index fda91c30710..87a0f868830 100644
--- a/arch/x86/kernel/microcode_core.c
+++ b/arch/x86/kernel/microcode_core.c
@@ -86,6 +86,7 @@
 
 #include <asm/microcode.h>
 #include <asm/processor.h>
+#include <asm/cpu_device_id.h>
 
 MODULE_DESCRIPTION("Microcode Update Driver");
 MODULE_AUTHOR("Tigran Aivazian <tigran@aivazian.fsnet.co.uk>");
@@ -504,6 +505,20 @@ static struct notifier_block __refdata mc_cpu_notifier = {
 	.notifier_call	= mc_cpu_callback,
 };
 
+#ifdef MODULE
+/* Autoload on Intel and AMD systems */
+static const struct x86_cpu_id microcode_id[] = {
+#ifdef CONFIG_MICROCODE_INTEL
+	{ X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, },
+#endif
+#ifdef CONFIG_MICROCODE_AMD
+	{ X86_VENDOR_AMD, X86_FAMILY_ANY, X86_MODEL_ANY, },
+#endif
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, microcode_id);
+#endif
+
 static int __init microcode_init(void)
 {
 	struct cpuinfo_x86 *c = &cpu_data(0);
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index 8ae05ce1850..2801b418d7b 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -474,6 +474,7 @@ static __ref int acpi_processor_start(struct acpi_processor *pr)
 
 #ifdef CONFIG_CPU_FREQ
 	acpi_processor_ppc_has_changed(pr, 0);
+	acpi_processor_load_module(pr);
 #endif
 	acpi_processor_get_throttling_info(pr);
 	acpi_processor_get_limit_info(pr);
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 85b32376dad..0af48a8554c 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -240,6 +240,28 @@ void acpi_processor_ppc_exit(void)
 	acpi_processor_ppc_status &= ~PPC_REGISTERED;
 }
 
+/*
+ * Do a quick check if the systems looks like it should use ACPI
+ * cpufreq. We look at a _PCT method being available, but don't
+ * do a whole lot of sanity checks.
+ */
+void acpi_processor_load_module(struct acpi_processor *pr)
+{
+	static int requested;
+	acpi_status status = 0;
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+
+	if (!arch_has_acpi_pdc() || requested)
+		return;
+	status = acpi_evaluate_object(pr->handle, "_PCT", NULL, &buffer);
+	if (!ACPI_FAILURE(status)) {
+		printk(KERN_INFO PREFIX "Requesting acpi_cpufreq\n");
+		request_module_nowait("acpi_cpufreq");
+		requested = 1;
+	}
+	kfree(buffer.pointer);
+}
+
 static int acpi_processor_get_performance_control(struct acpi_processor *pr)
 {
 	int result = 0;
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 7be9f79018e..9aa618acfe9 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -176,6 +176,9 @@ config GENERIC_CPU_DEVICES
 	bool
 	default n
 
+config SOC_BUS
+	bool
+
 source "drivers/base/regmap/Kconfig"
 
 config DMA_SHARED_BUFFER
diff --git a/drivers/base/Makefile b/drivers/base/Makefile
index 610f9997a40..b6d1b9c4200 100644
--- a/drivers/base/Makefile
+++ b/drivers/base/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_MODULES)	+= module.o
 endif
 obj-$(CONFIG_SYS_HYPERVISOR) += hypervisor.o
 obj-$(CONFIG_REGMAP)	+= regmap/
+obj-$(CONFIG_SOC_BUS) += soc.o
 
 ccflags-$(CONFIG_DEBUG_DRIVER) := -DDEBUG
 
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 40fb12288ce..26a06b801b5 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -1194,13 +1194,15 @@ EXPORT_SYMBOL_GPL(subsys_interface_register);
 
 void subsys_interface_unregister(struct subsys_interface *sif)
 {
-	struct bus_type *subsys = sif->subsys;
+	struct bus_type *subsys;
 	struct subsys_dev_iter iter;
 	struct device *dev;
 
-	if (!sif)
+	if (!sif || !sif->subsys)
 		return;
 
+	subsys = sif->subsys;
+
 	mutex_lock(&subsys->p->mutex);
 	list_del_init(&sif->node);
 	if (sif->remove_dev) {
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 4dabf5077c4..adf937bf409 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -11,6 +11,7 @@
 #include <linux/device.h>
 #include <linux/node.h>
 #include <linux/gfp.h>
+#include <linux/slab.h>
 #include <linux/percpu.h>
 
 #include "base.h"
@@ -244,6 +245,9 @@ int __cpuinit register_cpu(struct cpu *cpu, int num)
 	cpu->dev.id = num;
 	cpu->dev.bus = &cpu_subsys;
 	cpu->dev.release = cpu_device_release;
+#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE
+	cpu->dev.bus->uevent = arch_cpu_uevent;
+#endif
 	error = device_register(&cpu->dev);
 	if (!error && cpu->hotpluggable)
 		register_cpu_control(cpu);
@@ -268,6 +272,10 @@ struct device *get_cpu_device(unsigned cpu)
 }
 EXPORT_SYMBOL_GPL(get_cpu_device);
 
+#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE
+static DEVICE_ATTR(modalias, 0444, arch_print_cpu_modalias, NULL);
+#endif
+
 static struct attribute *cpu_root_attrs[] = {
 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
 	&dev_attr_probe.attr,
@@ -278,6 +286,9 @@ static struct attribute *cpu_root_attrs[] = {
 	&cpu_attrs[2].attr.attr,
 	&dev_attr_kernel_max.attr,
 	&dev_attr_offline.attr,
+#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE
+	&dev_attr_modalias.attr,
+#endif
 	NULL
 };
 
diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index b631f7c5945..60e4f77ca66 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -153,34 +153,6 @@ int driver_add_kobj(struct device_driver *drv, struct kobject *kobj,
 }
 EXPORT_SYMBOL_GPL(driver_add_kobj);
 
-/**
- * get_driver - increment driver reference count.
- * @drv: driver.
- */
-struct device_driver *get_driver(struct device_driver *drv)
-{
-	if (drv) {
-		struct driver_private *priv;
-		struct kobject *kobj;
-
-		kobj = kobject_get(&drv->p->kobj);
-		priv = to_driver(kobj);
-		return priv->driver;
-	}
-	return NULL;
-}
-EXPORT_SYMBOL_GPL(get_driver);
-
-/**
- * put_driver - decrement driver's refcount.
- * @drv: driver.
- */
-void put_driver(struct device_driver *drv)
-{
-	kobject_put(&drv->p->kobj);
-}
-EXPORT_SYMBOL_GPL(put_driver);
-
 static int driver_add_groups(struct device_driver *drv,
 			     const struct attribute_group **groups)
 {
@@ -234,7 +206,6 @@ int driver_register(struct device_driver *drv)
 
 	other = driver_find(drv->name, drv->bus);
 	if (other) {
-		put_driver(other);
 		printk(KERN_ERR "Error: Driver '%s' is already registered, "
 			"aborting...\n", drv->name);
 		return -EBUSY;
@@ -275,7 +246,9 @@ EXPORT_SYMBOL_GPL(driver_unregister);
  * Call kset_find_obj() to iterate over list of drivers on
  * a bus to find driver by name. Return driver if found.
  *
- * Note that kset_find_obj increments driver's reference count.
+ * This routine provides no locking to prevent the driver it returns
+ * from being unregistered or unloaded while the caller is using it.
+ * The caller is responsible for preventing this.
  */
 struct device_driver *driver_find(const char *name, struct bus_type *bus)
 {
@@ -283,6 +256,8 @@ struct device_driver *driver_find(const char *name, struct bus_type *bus)
 	struct driver_private *priv;
 
 	if (k) {
+		/* Drop reference added by kset_find_obj() */
+		kobject_put(k);
 		priv = to_driver(k);
 		return priv->driver;
 	}
diff --git a/drivers/base/soc.c b/drivers/base/soc.c
new file mode 100644
index 00000000000..05f150382da
--- /dev/null
+++ b/drivers/base/soc.c
@@ -0,0 +1,183 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2011
+ *
+ * Author: Lee Jones <lee.jones@linaro.org> for ST-Ericsson.
+ * License terms:  GNU General Public License (GPL), version 2
+ */
+
+#include <linux/sysfs.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/stat.h>
+#include <linux/slab.h>
+#include <linux/idr.h>
+#include <linux/spinlock.h>
+#include <linux/sys_soc.h>
+#include <linux/err.h>
+
+static DEFINE_IDR(soc_ida);
+static DEFINE_SPINLOCK(soc_lock);
+
+static ssize_t soc_info_get(struct device *dev,
+			    struct device_attribute *attr,
+			    char *buf);
+
+struct soc_device {
+	struct device dev;
+	struct soc_device_attribute *attr;
+	int soc_dev_num;
+};
+
+static struct bus_type soc_bus_type = {
+	.name  = "soc",
+};
+
+static DEVICE_ATTR(machine,  S_IRUGO, soc_info_get,  NULL);
+static DEVICE_ATTR(family,   S_IRUGO, soc_info_get,  NULL);
+static DEVICE_ATTR(soc_id,   S_IRUGO, soc_info_get,  NULL);
+static DEVICE_ATTR(revision, S_IRUGO, soc_info_get,  NULL);
+
+struct device *soc_device_to_device(struct soc_device *soc_dev)
+{
+	return &soc_dev->dev;
+}
+
+static mode_t soc_attribute_mode(struct kobject *kobj,
+                                 struct attribute *attr,
+                                 int index)
+{
+	struct device *dev = container_of(kobj, struct device, kobj);
+	struct soc_device *soc_dev = container_of(dev, struct soc_device, dev);
+
+	if ((attr == &dev_attr_machine.attr)
+	    && (soc_dev->attr->machine != NULL))
+		return attr->mode;
+	if ((attr == &dev_attr_family.attr)
+	    && (soc_dev->attr->family != NULL))
+		return attr->mode;
+	if ((attr == &dev_attr_revision.attr)
+	    && (soc_dev->attr->revision != NULL))
+		return attr->mode;
+	if ((attr == &dev_attr_soc_id.attr)
+	    && (soc_dev->attr->soc_id != NULL))
+	        return attr->mode;
+
+	/* Unknown or unfilled attribute. */
+	return 0;
+}
+
+static ssize_t soc_info_get(struct device *dev,
+			    struct device_attribute *attr,
+			    char *buf)
+{
+	struct soc_device *soc_dev = container_of(dev, struct soc_device, dev);
+
+	if (attr == &dev_attr_machine)
+		return sprintf(buf, "%s\n", soc_dev->attr->machine);
+	if (attr == &dev_attr_family)
+		return sprintf(buf, "%s\n", soc_dev->attr->family);
+	if (attr == &dev_attr_revision)
+		return sprintf(buf, "%s\n", soc_dev->attr->revision);
+	if (attr == &dev_attr_soc_id)
+		return sprintf(buf, "%s\n", soc_dev->attr->soc_id);
+
+	return -EINVAL;
+
+}
+
+static struct attribute *soc_attr[] = {
+	&dev_attr_machine.attr,
+	&dev_attr_family.attr,
+	&dev_attr_soc_id.attr,
+	&dev_attr_revision.attr,
+	NULL,
+};
+
+static const struct attribute_group soc_attr_group = {
+	.attrs = soc_attr,
+	.is_visible = soc_attribute_mode,
+};
+
+static const struct attribute_group *soc_attr_groups[] = {
+	&soc_attr_group,
+	NULL,
+};
+
+static void soc_release(struct device *dev)
+{
+	struct soc_device *soc_dev = container_of(dev, struct soc_device, dev);
+
+	kfree(soc_dev);
+}
+
+struct soc_device *soc_device_register(struct soc_device_attribute *soc_dev_attr)
+{
+	struct soc_device *soc_dev;
+	int ret;
+
+	soc_dev = kzalloc(sizeof(*soc_dev), GFP_KERNEL);
+	if (!soc_dev) {
+	        ret = -ENOMEM;
+		goto out1;
+	}
+
+	/* Fetch a unique (reclaimable) SOC ID. */
+	do {
+		if (!ida_pre_get(&soc_ida, GFP_KERNEL)) {
+			ret = -ENOMEM;
+			goto out2;
+		}
+
+		spin_lock(&soc_lock);
+		ret = ida_get_new(&soc_ida, &soc_dev->soc_dev_num);
+		spin_unlock(&soc_lock);
+
+	} while (ret == -EAGAIN);
+
+	if (ret)
+	         goto out2;
+
+	soc_dev->attr = soc_dev_attr;
+	soc_dev->dev.bus = &soc_bus_type;
+	soc_dev->dev.groups = soc_attr_groups;
+	soc_dev->dev.release = soc_release;
+
+	dev_set_name(&soc_dev->dev, "soc%d", soc_dev->soc_dev_num);
+
+	ret = device_register(&soc_dev->dev);
+	if (ret)
+		goto out3;
+
+	return soc_dev;
+
+out3:
+	ida_remove(&soc_ida, soc_dev->soc_dev_num);
+out2:
+	kfree(soc_dev);
+out1:
+	return ERR_PTR(ret);
+}
+
+/* Ensure soc_dev->attr is freed prior to calling soc_device_unregister. */
+void soc_device_unregister(struct soc_device *soc_dev)
+{
+	ida_remove(&soc_ida, soc_dev->soc_dev_num);
+
+	device_unregister(&soc_dev->dev);
+}
+
+static int __init soc_bus_register(void)
+{
+	spin_lock_init(&soc_lock);
+
+	return bus_register(&soc_bus_type);
+}
+core_initcall(soc_bus_register);
+
+static void __exit soc_bus_unregister(void)
+{
+	ida_destroy(&soc_ida);
+
+	bus_unregister(&soc_bus_type);
+}
+module_exit(soc_bus_unregister);
diff --git a/drivers/cpufreq/cpufreq-nforce2.c b/drivers/cpufreq/cpufreq-nforce2.c
index 7bac808804f..13d311ee08b 100644
--- a/drivers/cpufreq/cpufreq-nforce2.c
+++ b/drivers/cpufreq/cpufreq-nforce2.c
@@ -385,6 +385,14 @@ static struct cpufreq_driver nforce2_driver = {
 	.owner = THIS_MODULE,
 };
 
+#ifdef MODULE
+static DEFINE_PCI_DEVICE_TABLE(nforce2_ids) = {
+	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2 },
+	{}
+};
+MODULE_DEVICE_TABLE(pci, nforce2_ids);
+#endif
+
 /**
  * nforce2_detect_chipset - detect the Southbridge which contains FSB PLL logic
  *
diff --git a/drivers/cpufreq/e_powersaver.c b/drivers/cpufreq/e_powersaver.c
index 4bd6815d317..3fffbe6025c 100644
--- a/drivers/cpufreq/e_powersaver.c
+++ b/drivers/cpufreq/e_powersaver.c
@@ -16,6 +16,7 @@
 #include <linux/io.h>
 #include <linux/delay.h>
 
+#include <asm/cpu_device_id.h>
 #include <asm/msr.h>
 #include <asm/tsc.h>
 
@@ -437,18 +438,19 @@ static struct cpufreq_driver eps_driver = {
 	.attr		= eps_attr,
 };
 
+
+/* This driver will work only on Centaur C7 processors with
+ * Enhanced SpeedStep/PowerSaver registers */
+static const struct x86_cpu_id eps_cpu_id[] = {
+	{ X86_VENDOR_CENTAUR, 6, X86_MODEL_ANY, X86_FEATURE_EST },
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, eps_cpu_id);
+
 static int __init eps_init(void)
 {
-	struct cpuinfo_x86 *c = &cpu_data(0);
-
-	/* This driver will work only on Centaur C7 processors with
-	 * Enhanced SpeedStep/PowerSaver registers */
-	if (c->x86_vendor != X86_VENDOR_CENTAUR
-	    || c->x86 != 6 || c->x86_model < 10)
-		return -ENODEV;
-	if (!cpu_has(c, X86_FEATURE_EST))
+	if (!x86_match_cpu(eps_cpu_id) || boot_cpu_data.x86_model < 10)
 		return -ENODEV;
-
 	if (cpufreq_register_driver(&eps_driver))
 		return -EINVAL;
 	return 0;
diff --git a/drivers/cpufreq/elanfreq.c b/drivers/cpufreq/elanfreq.c
index c587db472a7..960671fd3d7 100644
--- a/drivers/cpufreq/elanfreq.c
+++ b/drivers/cpufreq/elanfreq.c
@@ -23,6 +23,7 @@
 #include <linux/delay.h>
 #include <linux/cpufreq.h>
 
+#include <asm/cpu_device_id.h>
 #include <asm/msr.h>
 #include <linux/timex.h>
 #include <linux/io.h>
@@ -277,17 +278,16 @@ static struct cpufreq_driver elanfreq_driver = {
 	.attr		= elanfreq_attr,
 };
 
+static const struct x86_cpu_id elan_id[] = {
+	{ X86_VENDOR_AMD, 4, 10, },
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, elan_id);
 
 static int __init elanfreq_init(void)
 {
-	struct cpuinfo_x86 *c = &cpu_data(0);
-
-	/* Test if we have the right hardware */
-	if ((c->x86_vendor != X86_VENDOR_AMD) ||
-		(c->x86 != 4) || (c->x86_model != 10)) {
-		printk(KERN_INFO "elanfreq: error: no Elan processor found!\n");
+	if (!x86_match_cpu(elan_id))
 		return -ENODEV;
-	}
 	return cpufreq_register_driver(&elanfreq_driver);
 }
 
diff --git a/drivers/cpufreq/gx-suspmod.c b/drivers/cpufreq/gx-suspmod.c
index ffe1f2c92ed..456bee058fe 100644
--- a/drivers/cpufreq/gx-suspmod.c
+++ b/drivers/cpufreq/gx-suspmod.c
@@ -82,6 +82,7 @@
 #include <linux/errno.h>
 #include <linux/slab.h>
 
+#include <asm/cpu_device_id.h>
 #include <asm/processor-cyrix.h>
 
 /* PCI config registers, all at F0 */
@@ -171,6 +172,7 @@ static struct pci_device_id gx_chipset_tbl[] __initdata = {
 	{ PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5510), },
 	{ 0, },
 };
+MODULE_DEVICE_TABLE(pci, gx_chipset_tbl);
 
 static void gx_write_byte(int reg, int value)
 {
@@ -185,13 +187,6 @@ static __init struct pci_dev *gx_detect_chipset(void)
 {
 	struct pci_dev *gx_pci = NULL;
 
-	/* check if CPU is a MediaGX or a Geode. */
-	if ((boot_cpu_data.x86_vendor != X86_VENDOR_NSC) &&
-	    (boot_cpu_data.x86_vendor != X86_VENDOR_CYRIX)) {
-		pr_debug("error: no MediaGX/Geode processor found!\n");
-		return NULL;
-	}
-
 	/* detect which companion chip is used */
 	for_each_pci_dev(gx_pci) {
 		if ((pci_match_id(gx_chipset_tbl, gx_pci)) != NULL)
diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c
index f47d26e2a13..53ddbc760af 100644
--- a/drivers/cpufreq/longhaul.c
+++ b/drivers/cpufreq/longhaul.c
@@ -35,6 +35,7 @@
 #include <linux/acpi.h>
 
 #include <asm/msr.h>
+#include <asm/cpu_device_id.h>
 #include <acpi/processor.h>
 
 #include "longhaul.h"
@@ -951,12 +952,17 @@ static struct cpufreq_driver longhaul_driver = {
 	.attr	= longhaul_attr,
 };
 
+static const struct x86_cpu_id longhaul_id[] = {
+	{ X86_VENDOR_CENTAUR, 6 },
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, longhaul_id);
 
 static int __init longhaul_init(void)
 {
 	struct cpuinfo_x86 *c = &cpu_data(0);
 
-	if (c->x86_vendor != X86_VENDOR_CENTAUR || c->x86 != 6)
+	if (!x86_match_cpu(longhaul_id))
 		return -ENODEV;
 
 #ifdef CONFIG_SMP
diff --git a/drivers/cpufreq/longrun.c b/drivers/cpufreq/longrun.c
index 34ea359b370..8bc9f5fbbae 100644
--- a/drivers/cpufreq/longrun.c
+++ b/drivers/cpufreq/longrun.c
@@ -14,6 +14,7 @@
 
 #include <asm/msr.h>
 #include <asm/processor.h>
+#include <asm/cpu_device_id.h>
 
 static struct cpufreq_driver	longrun_driver;
 
@@ -288,6 +289,12 @@ static struct cpufreq_driver longrun_driver = {
 	.owner		= THIS_MODULE,
 };
 
+static const struct x86_cpu_id longrun_ids[] = {
+	{ X86_VENDOR_TRANSMETA, X86_FAMILY_ANY, X86_MODEL_ANY,
+	  X86_FEATURE_LONGRUN },
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, longrun_ids);
 
 /**
  * longrun_init - initializes the Transmeta Crusoe LongRun CPUFreq driver
@@ -296,12 +303,8 @@ static struct cpufreq_driver longrun_driver = {
  */
 static int __init longrun_init(void)
 {
-	struct cpuinfo_x86 *c = &cpu_data(0);
-
-	if (c->x86_vendor != X86_VENDOR_TRANSMETA ||
-	    !cpu_has(c, X86_FEATURE_LONGRUN))
+	if (!x86_match_cpu(longrun_ids))
 		return -ENODEV;
-
 	return cpufreq_register_driver(&longrun_driver);
 }
 
diff --git a/drivers/cpufreq/p4-clockmod.c b/drivers/cpufreq/p4-clockmod.c
index 6be3e0760c2..827629c9aad 100644
--- a/drivers/cpufreq/p4-clockmod.c
+++ b/drivers/cpufreq/p4-clockmod.c
@@ -31,6 +31,7 @@
 #include <asm/processor.h>
 #include <asm/msr.h>
 #include <asm/timer.h>
+#include <asm/cpu_device_id.h>
 
 #include "speedstep-lib.h"
 
@@ -289,21 +290,25 @@ static struct cpufreq_driver p4clockmod_driver = {
 	.attr		= p4clockmod_attr,
 };
 
+static const struct x86_cpu_id cpufreq_p4_id[] = {
+	{ X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_ACC },
+	{}
+};
+
+/*
+ * Intentionally no MODULE_DEVICE_TABLE here: this driver should not
+ * be auto loaded.  Please don't add one.
+ */
 
 static int __init cpufreq_p4_init(void)
 {
-	struct cpuinfo_x86 *c = &cpu_data(0);
 	int ret;
 
 	/*
 	 * THERM_CONTROL is architectural for IA32 now, so
 	 * we can rely on the capability checks
 	 */
-	if (c->x86_vendor != X86_VENDOR_INTEL)
-		return -ENODEV;
-
-	if (!test_cpu_cap(c, X86_FEATURE_ACPI) ||
-				!test_cpu_cap(c, X86_FEATURE_ACC))
+	if (!x86_match_cpu(cpufreq_p4_id) || !boot_cpu_has(X86_FEATURE_ACPI))
 		return -ENODEV;
 
 	ret = cpufreq_register_driver(&p4clockmod_driver);
diff --git a/drivers/cpufreq/powernow-k6.c b/drivers/cpufreq/powernow-k6.c
index b3379d6a5c5..54dd031394f 100644
--- a/drivers/cpufreq/powernow-k6.c
+++ b/drivers/cpufreq/powernow-k6.c
@@ -16,6 +16,7 @@
 #include <linux/timex.h>
 #include <linux/io.h>
 
+#include <asm/cpu_device_id.h>
 #include <asm/msr.h>
 
 #define POWERNOW_IOPORT 0xfff0          /* it doesn't matter where, as long
@@ -210,6 +211,12 @@ static struct cpufreq_driver powernow_k6_driver = {
 	.attr		= powernow_k6_attr,
 };
 
+static const struct x86_cpu_id powernow_k6_ids[] = {
+	{ X86_VENDOR_AMD, 5, 12 },
+	{ X86_VENDOR_AMD, 5, 13 },
+	{}
+};
+
 
 /**
  * powernow_k6_init - initializes the k6 PowerNow! CPUFreq driver
@@ -220,10 +227,7 @@ static struct cpufreq_driver powernow_k6_driver = {
  */
 static int __init powernow_k6_init(void)
 {
-	struct cpuinfo_x86 *c = &cpu_data(0);
-
-	if ((c->x86_vendor != X86_VENDOR_AMD) || (c->x86 != 5) ||
-		((c->x86_model != 12) && (c->x86_model != 13)))
+	if (!x86_match_cpu(powernow_k6_ids))
 		return -ENODEV;
 
 	if (!request_region(POWERNOW_IOPORT, 16, "PowerNow!")) {
diff --git a/drivers/cpufreq/powernow-k7.c b/drivers/cpufreq/powernow-k7.c
index d71d9f37235..501d167368d 100644
--- a/drivers/cpufreq/powernow-k7.c
+++ b/drivers/cpufreq/powernow-k7.c
@@ -28,6 +28,7 @@
 #include <asm/timer.h>		/* Needed for recalibrate_cpu_khz() */
 #include <asm/msr.h>
 #include <asm/system.h>
+#include <asm/cpu_device_id.h>
 
 #ifdef CONFIG_X86_POWERNOW_K7_ACPI
 #include <linux/acpi.h>
@@ -110,18 +111,19 @@ static int check_fsb(unsigned int fsbspeed)
 	return delta < 5;
 }
 
+static const struct x86_cpu_id powernow_k7_cpuids[] = {
+	{ X86_VENDOR_AMD, 7, },
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, powernow_k7_cpuids);
+
 static int check_powernow(void)
 {
 	struct cpuinfo_x86 *c = &cpu_data(0);
 	unsigned int maxei, eax, ebx, ecx, edx;
 
-	if ((c->x86_vendor != X86_VENDOR_AMD) || (c->x86 != 6)) {
-#ifdef MODULE
-		printk(KERN_INFO PFX "This module only works with "
-				"AMD K7 CPUs\n");
-#endif
+	if (!x86_match_cpu(powernow_k7_cpuids))
 		return 0;
-	}
 
 	/* Get maximum capabilities */
 	maxei = cpuid_eax(0x80000000);
diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c
index 8f9b2ceeec8..c0e816468e3 100644
--- a/drivers/cpufreq/powernow-k8.c
+++ b/drivers/cpufreq/powernow-k8.c
@@ -40,6 +40,7 @@
 #include <linux/delay.h>
 
 #include <asm/msr.h>
+#include <asm/cpu_device_id.h>
 
 #include <linux/acpi.h>
 #include <linux/mutex.h>
@@ -520,6 +521,15 @@ static int core_voltage_post_transition(struct powernow_k8_data *data,
 	return 0;
 }
 
+static const struct x86_cpu_id powernow_k8_ids[] = {
+	/* IO based frequency switching */
+	{ X86_VENDOR_AMD, 0xf },
+	/* MSR based frequency switching supported */
+	X86_FEATURE_MATCH(X86_FEATURE_HW_PSTATE),
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, powernow_k8_ids);
+
 static void check_supported_cpu(void *_rc)
 {
 	u32 eax, ebx, ecx, edx;
@@ -527,13 +537,7 @@ static void check_supported_cpu(void *_rc)
 
 	*rc = -ENODEV;
 
-	if (__this_cpu_read(cpu_info.x86_vendor) != X86_VENDOR_AMD)
-		return;
-
 	eax = cpuid_eax(CPUID_PROCESSOR_SIGNATURE);
-	if (((eax & CPUID_XFAM) != CPUID_XFAM_K8) &&
-	    ((eax & CPUID_XFAM) < CPUID_XFAM_10H))
-		return;
 
 	if ((eax & CPUID_XFAM) == CPUID_XFAM_K8) {
 		if (((eax & CPUID_USE_XFAM_XMOD) != CPUID_USE_XFAM_XMOD) ||
@@ -1553,6 +1557,9 @@ static int __cpuinit powernowk8_init(void)
 	unsigned int i, supported_cpus = 0, cpu;
 	int rv;
 
+	if (!x86_match_cpu(powernow_k8_ids))
+		return -ENODEV;
+
 	for_each_online_cpu(i) {
 		int rc;
 		smp_call_function_single(i, check_supported_cpu, &rc, 1);
diff --git a/drivers/cpufreq/sc520_freq.c b/drivers/cpufreq/sc520_freq.c
index 1e205e6b172..e42e073cd9b 100644
--- a/drivers/cpufreq/sc520_freq.c
+++ b/drivers/cpufreq/sc520_freq.c
@@ -22,6 +22,7 @@
 #include <linux/timex.h>
 #include <linux/io.h>
 
+#include <asm/cpu_device_id.h>
 #include <asm/msr.h>
 
 #define MMCR_BASE	0xfffef000	/* The default base address */
@@ -150,18 +151,19 @@ static struct cpufreq_driver sc520_freq_driver = {
 	.attr	= sc520_freq_attr,
 };
 
+static const struct x86_cpu_id sc520_ids[] = {
+	{ X86_VENDOR_AMD, 4, 9 },
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, sc520_ids);
 
 static int __init sc520_freq_init(void)
 {
-	struct cpuinfo_x86 *c = &cpu_data(0);
 	int err;
 
-	/* Test if we have the right hardware */
-	if (c->x86_vendor != X86_VENDOR_AMD ||
-	    c->x86 != 4 || c->x86_model != 9) {
-		pr_debug("no Elan SC520 processor found!\n");
+	if (!x86_match_cpu(sc520_ids))
 		return -ENODEV;
-	}
+
 	cpuctl = ioremap((unsigned long)(MMCR_BASE + OFFS_CPUCTL), 1);
 	if (!cpuctl) {
 		printk(KERN_ERR "sc520_freq: error: failed to remap memory\n");
diff --git a/drivers/cpufreq/speedstep-centrino.c b/drivers/cpufreq/speedstep-centrino.c
index 6ea3455def2..3a953d519f4 100644
--- a/drivers/cpufreq/speedstep-centrino.c
+++ b/drivers/cpufreq/speedstep-centrino.c
@@ -25,6 +25,7 @@
 #include <asm/msr.h>
 #include <asm/processor.h>
 #include <asm/cpufeature.h>
+#include <asm/cpu_device_id.h>
 
 #define PFX		"speedstep-centrino: "
 #define MAINTAINER	"cpufreq@vger.kernel.org"
@@ -595,6 +596,24 @@ static struct cpufreq_driver centrino_driver = {
 	.owner		= THIS_MODULE,
 };
 
+/*
+ * This doesn't replace the detailed checks above because
+ * the generic CPU IDs don't have a way to match for steppings
+ * or ASCII model IDs.
+ */
+static const struct x86_cpu_id centrino_ids[] = {
+	{ X86_VENDOR_INTEL, 6, 9, X86_FEATURE_EST },
+	{ X86_VENDOR_INTEL, 6, 13, X86_FEATURE_EST },
+	{ X86_VENDOR_INTEL, 6, 13, X86_FEATURE_EST },
+	{ X86_VENDOR_INTEL, 6, 13, X86_FEATURE_EST },
+	{ X86_VENDOR_INTEL, 15, 3, X86_FEATURE_EST },
+	{ X86_VENDOR_INTEL, 15, 4, X86_FEATURE_EST },
+	{}
+};
+#if 0
+/* Autoload or not? Do not for now. */
+MODULE_DEVICE_TABLE(x86cpu, centrino_ids);
+#endif
 
 /**
  * centrino_init - initializes the Enhanced SpeedStep CPUFreq driver
@@ -612,11 +631,8 @@ static struct cpufreq_driver centrino_driver = {
  */
 static int __init centrino_init(void)
 {
-	struct cpuinfo_x86 *cpu = &cpu_data(0);
-
-	if (!cpu_has(cpu, X86_FEATURE_EST))
+	if (!x86_match_cpu(centrino_ids))
 		return -ENODEV;
-
 	return cpufreq_register_driver(&centrino_driver);
 }
 
diff --git a/drivers/cpufreq/speedstep-ich.c b/drivers/cpufreq/speedstep-ich.c
index a748ce782fe..7432b3a72cd 100644
--- a/drivers/cpufreq/speedstep-ich.c
+++ b/drivers/cpufreq/speedstep-ich.c
@@ -25,6 +25,8 @@
 #include <linux/pci.h>
 #include <linux/sched.h>
 
+#include <asm/cpu_device_id.h>
+
 #include "speedstep-lib.h"
 
 
@@ -388,6 +390,16 @@ static struct cpufreq_driver speedstep_driver = {
 	.attr	= speedstep_attr,
 };
 
+static const struct x86_cpu_id ss_smi_ids[] = {
+	{ X86_VENDOR_INTEL, 6, 0xb, },
+	{ X86_VENDOR_INTEL, 6, 0x8, },
+	{ X86_VENDOR_INTEL, 15, 2 },
+	{}
+};
+#if 0
+/* Autoload or not? Do not for now. */
+MODULE_DEVICE_TABLE(x86cpu, ss_smi_ids);
+#endif
 
 /**
  * speedstep_init - initializes the SpeedStep CPUFreq driver
@@ -398,6 +410,9 @@ static struct cpufreq_driver speedstep_driver = {
  */
 static int __init speedstep_init(void)
 {
+	if (!x86_match_cpu(ss_smi_ids))
+		return -ENODEV;
+
 	/* detect processor */
 	speedstep_processor = speedstep_detect_processor();
 	if (!speedstep_processor) {
diff --git a/drivers/cpufreq/speedstep-lib.c b/drivers/cpufreq/speedstep-lib.c
index 8af2d2fd9d5..7047821a7f8 100644
--- a/drivers/cpufreq/speedstep-lib.c
+++ b/drivers/cpufreq/speedstep-lib.c
@@ -249,6 +249,7 @@ EXPORT_SYMBOL_GPL(speedstep_get_frequency);
  *                 DETECT SPEEDSTEP-CAPABLE PROCESSOR                *
  *********************************************************************/
 
+/* Keep in sync with the x86_cpu_id tables in the different modules */
 unsigned int speedstep_detect_processor(void)
 {
 	struct cpuinfo_x86 *c = &cpu_data(0);
diff --git a/drivers/cpufreq/speedstep-smi.c b/drivers/cpufreq/speedstep-smi.c
index c76ead3490b..6a457fcaaad 100644
--- a/drivers/cpufreq/speedstep-smi.c
+++ b/drivers/cpufreq/speedstep-smi.c
@@ -20,6 +20,7 @@
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <asm/ist.h>
+#include <asm/cpu_device_id.h>
 
 #include "speedstep-lib.h"
 
@@ -379,6 +380,17 @@ static struct cpufreq_driver speedstep_driver = {
 	.attr		= speedstep_attr,
 };
 
+static const struct x86_cpu_id ss_smi_ids[] = {
+	{ X86_VENDOR_INTEL, 6, 0xb, },
+	{ X86_VENDOR_INTEL, 6, 0x8, },
+	{ X86_VENDOR_INTEL, 15, 2 },
+	{}
+};
+#if 0
+/* Not auto loaded currently */
+MODULE_DEVICE_TABLE(x86cpu, ss_smi_ids);
+#endif
+
 /**
  * speedstep_init - initializes the SpeedStep CPUFreq driver
  *
@@ -388,6 +400,9 @@ static struct cpufreq_driver speedstep_driver = {
  */
 static int __init speedstep_init(void)
 {
+	if (!x86_match_cpu(ss_smi_ids))
+		return -ENODEV;
+
 	speedstep_processor = speedstep_detect_processor();
 
 	switch (speedstep_processor) {
diff --git a/drivers/crypto/padlock-aes.c b/drivers/crypto/padlock-aes.c
index 29b9469f837..37b2e9406af 100644
--- a/drivers/crypto/padlock-aes.c
+++ b/drivers/crypto/padlock-aes.c
@@ -19,6 +19,7 @@
 #include <linux/percpu.h>
 #include <linux/smp.h>
 #include <linux/slab.h>
+#include <asm/cpu_device_id.h>
 #include <asm/byteorder.h>
 #include <asm/processor.h>
 #include <asm/i387.h>
@@ -503,12 +504,18 @@ static struct crypto_alg cbc_aes_alg = {
 	}
 };
 
+static struct x86_cpu_id padlock_cpu_id[] = {
+	X86_FEATURE_MATCH(X86_FEATURE_XCRYPT),
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, padlock_cpu_id);
+
 static int __init padlock_init(void)
 {
 	int ret;
 	struct cpuinfo_x86 *c = &cpu_data(0);
 
-	if (!cpu_has_xcrypt)
+	if (!x86_match_cpu(padlock_cpu_id))
 		return -ENODEV;
 
 	if (!cpu_has_xcrypt_enabled) {
diff --git a/drivers/crypto/padlock-sha.c b/drivers/crypto/padlock-sha.c
index 06bdb4b2c6a..9266c0e2549 100644
--- a/drivers/crypto/padlock-sha.c
+++ b/drivers/crypto/padlock-sha.c
@@ -22,6 +22,7 @@
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/scatterlist.h>
+#include <asm/cpu_device_id.h>
 #include <asm/i387.h>
 
 struct padlock_sha_desc {
@@ -526,6 +527,12 @@ static struct shash_alg sha256_alg_nano = {
 	}
 };
 
+static struct x86_cpu_id padlock_sha_ids[] = {
+	X86_FEATURE_MATCH(X86_FEATURE_PHE),
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, padlock_sha_ids);
+
 static int __init padlock_init(void)
 {
 	int rc = -ENODEV;
@@ -533,15 +540,8 @@ static int __init padlock_init(void)
 	struct shash_alg *sha1;
 	struct shash_alg *sha256;
 
-	if (!cpu_has_phe) {
-		printk(KERN_NOTICE PFX "VIA PadLock Hash Engine not detected.\n");
-		return -ENODEV;
-	}
-
-	if (!cpu_has_phe_enabled) {
-		printk(KERN_NOTICE PFX "VIA PadLock detected, but not enabled. Hmm, strange...\n");
+	if (!x86_match_cpu(padlock_sha_ids) || !cpu_has_phe_enabled)
 		return -ENODEV;
-	}
 
 	/* Register the newly added algorithm module if on *
 	* VIA Nano processor, or else just do as before */
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index af08ce7207d..bce53fa0e16 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1619,11 +1619,7 @@ static ssize_t store_new_id(struct device_driver *drv, const char *buf,
 	list_add_tail(&dynid->list, &hdrv->dyn_list);
 	spin_unlock(&hdrv->dyn_lock);
 
-	ret = 0;
-	if (get_driver(&hdrv->driver)) {
-		ret = driver_attach(&hdrv->driver);
-		put_driver(&hdrv->driver);
-	}
+	ret = driver_attach(&hdrv->driver);
 
 	return ret ? : count;
 }
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 36484db36ba..9ffbfc575a0 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -37,81 +37,6 @@ struct vmbus_channel_message_table_entry {
 	void (*message_handler)(struct vmbus_channel_message_header *msg);
 };
 
-#define MAX_MSG_TYPES                    4
-#define MAX_NUM_DEVICE_CLASSES_SUPPORTED 8
-
-static const uuid_le
-	supported_device_classes[MAX_NUM_DEVICE_CLASSES_SUPPORTED] = {
-	/* {ba6163d9-04a1-4d29-b605-72e2ffb1dc7f} */
-	/* Storage - SCSI */
-	{
-		.b  = {
-			0xd9, 0x63, 0x61, 0xba, 0xa1, 0x04, 0x29, 0x4d,
-			0xb6, 0x05, 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f
-		}
-	},
-
-	/* {F8615163-DF3E-46c5-913F-F2D2F965ED0E} */
-	/* Network */
-	{
-		.b = {
-			0x63, 0x51, 0x61, 0xF8, 0x3E, 0xDF, 0xc5, 0x46,
-			0x91, 0x3F, 0xF2, 0xD2, 0xF9, 0x65, 0xED, 0x0E
-		}
-	},
-
-	/* {CFA8B69E-5B4A-4cc0-B98B-8BA1A1F3F95A} */
-	/* Input */
-	{
-		.b = {
-			0x9E, 0xB6, 0xA8, 0xCF, 0x4A, 0x5B, 0xc0, 0x4c,
-			0xB9, 0x8B, 0x8B, 0xA1, 0xA1, 0xF3, 0xF9, 0x5A
-		}
-	},
-
-	/* {32412632-86cb-44a2-9b5c-50d1417354f5} */
-	/* IDE */
-	{
-		.b = {
-			0x32, 0x26, 0x41, 0x32, 0xcb, 0x86, 0xa2, 0x44,
-			0x9b, 0x5c, 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5
-		}
-	},
-	/* 0E0B6031-5213-4934-818B-38D90CED39DB */
-	/* Shutdown */
-	{
-		.b = {
-			0x31, 0x60, 0x0B, 0X0E, 0x13, 0x52, 0x34, 0x49,
-			0x81, 0x8B, 0x38, 0XD9, 0x0C, 0xED, 0x39, 0xDB
-		}
-	},
-	/* {9527E630-D0AE-497b-ADCE-E80AB0175CAF} */
-	/* TimeSync */
-	{
-		.b = {
-			0x30, 0xe6, 0x27, 0x95, 0xae, 0xd0, 0x7b, 0x49,
-			0xad, 0xce, 0xe8, 0x0a, 0xb0, 0x17, 0x5c, 0xaf
-		}
-	},
-	/* {57164f39-9115-4e78-ab55-382f3bd5422d} */
-	/* Heartbeat */
-	{
-		.b = {
-			0x39, 0x4f, 0x16, 0x57, 0x15, 0x91, 0x78, 0x4e,
-			0xab, 0x55, 0x38, 0x2f, 0x3b, 0xd5, 0x42, 0x2d
-		}
-	},
-	/* {A9A0F4E7-5A45-4d96-B827-8A841E8C03E6} */
-	/* KVP */
-	{
-		.b = {
-			0xe7, 0xf4, 0xa0, 0xa9, 0x45, 0x5a, 0x96, 0x4d,
-			0xb8, 0x27, 0x8a, 0x84, 0x1e, 0x8c, 0x3,  0xe6
-	}
-	},
-
-};
-
 
 /**
  * vmbus_prep_negotiate_resp() - Create default response for Hyper-V Negotiate message
@@ -321,20 +246,8 @@ static void vmbus_onoffer(struct vmbus_channel_message_header *hdr)
 	struct vmbus_channel *newchannel;
 	uuid_le *guidtype;
 	uuid_le *guidinstance;
-	int i;
-	int fsupported = 0;
 
 	offer = (struct vmbus_channel_offer_channel *)hdr;
-	for (i = 0; i < MAX_NUM_DEVICE_CLASSES_SUPPORTED; i++) {
-		if (!uuid_le_cmp(offer->offer.if_type,
-				supported_device_classes[i])) {
-			fsupported = 1;
-			break;
-		}
-	}
-
-	if (!fsupported)
-		return;
 
 	guidtype = &offer->offer.if_type;
 	guidinstance = &offer->offer.if_instance;
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index 12aa97f31f9..15956bd48b4 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -155,9 +155,9 @@ int hv_init(void)
 	union hv_x64_msr_hypercall_contents hypercall_msr;
 	void *virtaddr = NULL;
 
-	memset(hv_context.synic_event_page, 0, sizeof(void *) * MAX_NUM_CPUS);
+	memset(hv_context.synic_event_page, 0, sizeof(void *) * NR_CPUS);
 	memset(hv_context.synic_message_page, 0,
-	       sizeof(void *) * MAX_NUM_CPUS);
+	       sizeof(void *) * NR_CPUS);
 
 	if (!query_hypervisor_presence())
 		goto cleanup;
diff --git a/drivers/hv/hv_kvp.c b/drivers/hv/hv_kvp.c
index 0e8343f585b..0ef4c1f6ca5 100644
--- a/drivers/hv/hv_kvp.c
+++ b/drivers/hv/hv_kvp.c
@@ -28,8 +28,6 @@
 #include <linux/workqueue.h>
 #include <linux/hyperv.h>
 
-#include "hv_kvp.h"
-
 
 
 /*
@@ -73,15 +71,20 @@ kvp_register(void)
 {
 
 	struct cn_msg *msg;
+	struct hv_kvp_msg *kvp_msg;
+	char *version;
 
-	msg = kzalloc(sizeof(*msg) + strlen(HV_DRV_VERSION) + 1 , GFP_ATOMIC);
+	msg = kzalloc(sizeof(*msg) + sizeof(struct hv_kvp_msg), GFP_ATOMIC);
 
 	if (msg) {
+		kvp_msg = (struct hv_kvp_msg *)msg->data;
+		version = kvp_msg->body.kvp_version;
 		msg->id.idx =  CN_KVP_IDX;
 		msg->id.val = CN_KVP_VAL;
-		msg->seq = KVP_REGISTER;
-		strcpy(msg->data, HV_DRV_VERSION);
-		msg->len = strlen(HV_DRV_VERSION) + 1;
+
+		kvp_msg->kvp_hdr.operation = KVP_OP_REGISTER;
+		strcpy(version, HV_DRV_VERSION);
+		msg->len = sizeof(struct hv_kvp_msg);
 		cn_netlink_send(msg, 0, GFP_ATOMIC);
 		kfree(msg);
 	}
@@ -103,23 +106,24 @@ kvp_work_func(struct work_struct *dummy)
 static void
 kvp_cn_callback(struct cn_msg *msg, struct netlink_skb_parms *nsp)
 {
-	struct hv_ku_msg *message;
+	struct hv_kvp_msg *message;
+	struct hv_kvp_msg_enumerate *data;
 
-	message = (struct hv_ku_msg *)msg->data;
-	if (msg->seq == KVP_REGISTER) {
+	message = (struct hv_kvp_msg *)msg->data;
+	if (message->kvp_hdr.operation == KVP_OP_REGISTER) {
 		pr_info("KVP: user-mode registering done.\n");
 		kvp_register();
 	}
 
-	if (msg->seq == KVP_USER_SET) {
+	if (message->kvp_hdr.operation == KVP_OP_ENUMERATE) {
+		data = &message->body.kvp_enum_data;
 		/*
 		 * Complete the transaction by forwarding the key value
 		 * to the host. But first, cancel the timeout.
 		 */
 		if (cancel_delayed_work_sync(&kvp_work))
-			kvp_respond_to_host(message->kvp_key,
-						message->kvp_value,
-						!strlen(message->kvp_key));
+			kvp_respond_to_host(data->data.key, data->data.value,
+					!strlen(data->data.key));
 	}
 }
 
@@ -127,6 +131,7 @@ static void
 kvp_send_key(struct work_struct *dummy)
 {
 	struct cn_msg *msg;
+	struct hv_kvp_msg *message;
 	int index = kvp_transaction.index;
 
 	msg = kzalloc(sizeof(*msg) + sizeof(struct hv_kvp_msg) , GFP_ATOMIC);
@@ -134,9 +139,11 @@ kvp_send_key(struct work_struct *dummy)
 	if (msg) {
 		msg->id.idx =  CN_KVP_IDX;
 		msg->id.val = CN_KVP_VAL;
-		msg->seq = KVP_KERNEL_GET;
-		((struct hv_ku_msg *)msg->data)->kvp_index = index;
-		msg->len = sizeof(struct hv_ku_msg);
+
+		message = (struct hv_kvp_msg *)msg->data;
+		message->kvp_hdr.operation = KVP_OP_ENUMERATE;
+		message->body.kvp_enum_data.index = index;
+		msg->len = sizeof(struct hv_kvp_msg);
 		cn_netlink_send(msg, 0, GFP_ATOMIC);
 		kfree(msg);
 	}
@@ -193,7 +200,7 @@ kvp_respond_to_host(char *key, char *value, int error)
 	kvp_msg = (struct hv_kvp_msg *)
 			&recv_buffer[sizeof(struct vmbuspipe_hdr) +
 			sizeof(struct icmsg_hdr)];
-	kvp_data = &kvp_msg->kvp_data;
+	kvp_data = &kvp_msg->body.kvp_enum_data;
 	key_name = key;
 
 	/*
@@ -268,7 +275,7 @@ void hv_kvp_onchannelcallback(void *context)
 				sizeof(struct vmbuspipe_hdr) +
 				sizeof(struct icmsg_hdr)];
 
-			kvp_data = &kvp_msg->kvp_data;
+			kvp_data = &kvp_msg->body.kvp_enum_data;
 
 			/*
 			 * We only support the "get" operation on
diff --git a/drivers/hv/hv_kvp.h b/drivers/hv/hv_kvp.h
deleted file mode 100644
index 9b765d7df83..00000000000
--- a/drivers/hv/hv_kvp.h
+++ /dev/null
@@ -1,184 +0,0 @@
-/*
- * An implementation of HyperV key value pair (KVP) functionality for Linux.
- *
- *
- * Copyright (C) 2010, Novell, Inc.
- * Author : K. Y. Srinivasan <ksrinivasan@novell.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT.  See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-#ifndef	_KVP_H
-#define	_KVP_H_
-
-/*
- * Maximum value size - used for both key names and value data, and includes
- * any applicable NULL terminators.
- *
- * Note:  This limit is somewhat arbitrary, but falls easily within what is
- * supported for all native guests (back to Win 2000) and what is reasonable
- * for the IC KVP exchange functionality.  Note that Windows Me/98/95 are
- * limited to 255 character key names.
- *
- * MSDN recommends not storing data values larger than 2048 bytes in the
- * registry.
- *
- * Note:  This value is used in defining the KVP exchange message - this value
- * cannot be modified without affecting the message size and compatibility.
- */
-
-/*
- * bytes, including any null terminators
- */
-#define HV_KVP_EXCHANGE_MAX_VALUE_SIZE          (2048)
-
-
-/*
- * Maximum key size - the registry limit for the length of an entry name
- * is 256 characters, including the null terminator
- */
-
-#define HV_KVP_EXCHANGE_MAX_KEY_SIZE            (512)
-
-/*
- * In Linux, we implement the KVP functionality in two components:
- * 1) The kernel component which is packaged as part of the hv_utils driver
- * is responsible for communicating with the host and responsible for
- * implementing the host/guest protocol. 2) A user level daemon that is
- * responsible for data gathering.
- *
- * Host/Guest Protocol: The host iterates over an index and expects the guest
- * to assign a key name to the index and also return the value corresponding to
- * the key. The host will have atmost one KVP transaction outstanding at any
- * given point in time. The host side iteration stops when the guest returns
- * an error. Microsoft has specified the following mapping of key names to
- * host specified index:
- *
- *	Index		Key Name
- *	0		FullyQualifiedDomainName
- *	1		IntegrationServicesVersion
- *	2		NetworkAddressIPv4
- *	3		NetworkAddressIPv6
- *	4		OSBuildNumber
- *	5		OSName
- *	6		OSMajorVersion
- *	7		OSMinorVersion
- *	8		OSVersion
- *	9		ProcessorArchitecture
- *
- * The Windows host expects the Key Name and Key Value to be encoded in utf16.
- *
- * Guest Kernel/KVP Daemon Protocol: As noted earlier, we implement all of the
- * data gathering functionality in a user mode daemon. The user level daemon
- * is also responsible for binding the key name to the index as well. The
- * kernel and user-level daemon communicate using a connector channel.
- *
- * The user mode component first registers with the
- * the kernel component. Subsequently, the kernel component requests, data
- * for the specified keys. In response to this message the user mode component
- * fills in the value corresponding to the specified key. We overload the
- * sequence field in the cn_msg header to define our KVP message types.
- *
- *
- * The kernel component simply acts as a conduit for communication between the
- * Windows host and the user-level daemon. The kernel component passes up the
- * index received from the Host to the user-level daemon. If the index is
- * valid (supported), the corresponding key as well as its
- * value (both are strings) is returned. If the index is invalid
- * (not supported), a NULL key string is returned.
- */
-
-/*
- *
- * The following definitions are shared with the user-mode component; do not
- * change any of this without making the corresponding changes in
- * the KVP user-mode component.
- */
-
-#define CN_KVP_VAL             0x1 /* This supports queries from the kernel */
-#define CN_KVP_USER_VAL       0x2 /* This supports queries from the user */
-
-enum hv_ku_op {
-	KVP_REGISTER = 0, /* Register the user mode component */
-	KVP_KERNEL_GET, /* Kernel is requesting the value */
-	KVP_KERNEL_SET, /* Kernel is providing the value */
-	KVP_USER_GET,  /* User is requesting the value */
-	KVP_USER_SET  /* User is providing the value */
-};
-
-struct hv_ku_msg {
-	__u32 kvp_index; /* Key index */
-	__u8  kvp_key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; /* Key name */
-	__u8  kvp_value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; /* Key  value */
-};
-
-
-
-
-#ifdef __KERNEL__
-
-/*
- * Registry value types.
- */
-
-#define REG_SZ 1
-
-enum hv_kvp_exchg_op {
-	KVP_OP_GET = 0,
-	KVP_OP_SET,
-	KVP_OP_DELETE,
-	KVP_OP_ENUMERATE,
-	KVP_OP_COUNT /* Number of operations, must be last. */
-};
-
-enum hv_kvp_exchg_pool {
-	KVP_POOL_EXTERNAL = 0,
-	KVP_POOL_GUEST,
-	KVP_POOL_AUTO,
-	KVP_POOL_AUTO_EXTERNAL,
-	KVP_POOL_AUTO_INTERNAL,
-	KVP_POOL_COUNT /* Number of pools, must be last. */
-};
-
-struct hv_kvp_hdr {
-	u8 operation;
-	u8 pool;
-};
-
-struct hv_kvp_exchg_msg_value {
-	u32 value_type;
-	u32 key_size;
-	u32 value_size;
-	u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
-	u8 value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE];
-};
-
-struct hv_kvp_msg_enumerate {
-	u32 index;
-	struct hv_kvp_exchg_msg_value data;
-};
-
-struct hv_kvp_msg {
-	struct hv_kvp_hdr	kvp_hdr;
-	struct hv_kvp_msg_enumerate	kvp_data;
-};
-
-int hv_kvp_init(struct hv_util_service *);
-void hv_kvp_deinit(void);
-void hv_kvp_onchannelcallback(void *);
-
-#endif /* __KERNEL__ */
-#endif	/* _KVP_H */
-
diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c
index 55d58f21e6d..dbb8b8eec21 100644
--- a/drivers/hv/hv_util.c
+++ b/drivers/hv/hv_util.c
@@ -28,9 +28,6 @@
 #include <linux/reboot.h>
 #include <linux/hyperv.h>
 
-#include "hv_kvp.h"
-
-
 static void shutdown_onchannelcallback(void *context);
 static struct hv_util_service util_shutdown = {
 	.util_cb = shutdown_onchannelcallback,
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index 6d7d286d544..699f0d8e59e 100644
--- a/drivers/hv/hyperv_vmbus.h
+++ b/drivers/hv/hyperv_vmbus.h
@@ -457,7 +457,6 @@ static const uuid_le VMBUS_SERVICE_ID = {
 	},
 };
 
-#define MAX_NUM_CPUS	32
 
 
 struct hv_input_signal_event_buffer {
@@ -483,8 +482,8 @@ struct hv_context {
 	/* 8-bytes aligned of the buffer above */
 	struct hv_input_signal_event *signal_event_param;
 
-	void *synic_message_page[MAX_NUM_CPUS];
-	void *synic_event_page[MAX_NUM_CPUS];
+	void *synic_message_page[NR_CPUS];
+	void *synic_event_page[NR_CPUS];
 };
 
 extern struct hv_context hv_context;
diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
index a6c6ec36615..249ac460e3d 100644
--- a/drivers/hwmon/coretemp.c
+++ b/drivers/hwmon/coretemp.c
@@ -39,6 +39,7 @@
 #include <linux/moduleparam.h>
 #include <asm/msr.h>
 #include <asm/processor.h>
+#include <asm/cpu_device_id.h>
 
 #define DRVNAME	"coretemp"
 
@@ -759,13 +760,23 @@ static struct notifier_block coretemp_cpu_notifier __refdata = {
 	.notifier_call = coretemp_cpu_callback,
 };
 
+static const struct x86_cpu_id coretemp_ids[] = {
+	{ X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_DTS },
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, coretemp_ids);
+
 static int __init coretemp_init(void)
 {
 	int i, err = -ENODEV;
 
-	/* quick check if we run Intel */
-	if (cpu_data(0).x86_vendor != X86_VENDOR_INTEL)
-		goto exit;
+	/*
+	 * CPUID.06H.EAX[0] indicates whether the CPU has thermal
+	 * sensors. We check this bit only, all the early CPUs
+	 * without thermal sensors will be filtered out.
+	 */
+	if (!x86_match_cpu(coretemp_ids))
+		return -ENODEV;
 
 	err = platform_driver_register(&coretemp_driver);
 	if (err)
diff --git a/drivers/hwmon/via-cputemp.c b/drivers/hwmon/via-cputemp.c
index 8eac67d769f..8689664ef03 100644
--- a/drivers/hwmon/via-cputemp.c
+++ b/drivers/hwmon/via-cputemp.c
@@ -37,6 +37,7 @@
 #include <linux/cpu.h>
 #include <asm/msr.h>
 #include <asm/processor.h>
+#include <asm/cpu_device_id.h>
 
 #define DRVNAME	"via_cputemp"
 
@@ -308,15 +309,20 @@ static struct notifier_block via_cputemp_cpu_notifier __refdata = {
 	.notifier_call = via_cputemp_cpu_callback,
 };
 
+static const struct x86_cpu_id cputemp_ids[] = {
+	{ X86_VENDOR_CENTAUR, 6, 0xa, }, /* C7 A */
+	{ X86_VENDOR_CENTAUR, 6, 0xd, }, /* C7 D */
+	{ X86_VENDOR_CENTAUR, 6, 0xf, }, /* Nano */
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, cputemp_ids);
+
 static int __init via_cputemp_init(void)
 {
 	int i, err;
 
-	if (cpu_data(0).x86_vendor != X86_VENDOR_CENTAUR) {
-		printk(KERN_DEBUG DRVNAME ": Not a VIA CPU\n");
-		err = -ENODEV;
-		goto exit;
-	}
+	if (!x86_match_cpu(cputemp_ids))
+		return -ENODEV;
 
 	err = platform_driver_register(&via_cputemp_driver);
 	if (err)
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index 54ab97bae04..237fe5785f0 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -62,6 +62,7 @@
 #include <linux/notifier.h>
 #include <linux/cpu.h>
 #include <linux/module.h>
+#include <asm/cpu_device_id.h>
 #include <asm/mwait.h>
 #include <asm/msr.h>
 
@@ -81,6 +82,17 @@ static unsigned int mwait_substates;
 /* Reliable LAPIC Timer States, bit 1 for C1 etc.  */
 static unsigned int lapic_timer_reliable_states = (1 << 1);	 /* Default to only C1 */
 
+struct idle_cpu {
+	struct cpuidle_state *state_table;
+
+	/*
+	 * Hardware C-state auto-demotion may not always be optimal.
+	 * Indicate which enable bits to clear here.
+	 */
+	unsigned long auto_demotion_disable_flags;
+};
+
+static const struct idle_cpu *icpu;
 static struct cpuidle_device __percpu *intel_idle_cpuidle_devices;
 static int intel_idle(struct cpuidle_device *dev,
 			struct cpuidle_driver *drv, int index);
@@ -88,12 +100,6 @@ static int intel_idle(struct cpuidle_device *dev,
 static struct cpuidle_state *cpuidle_state_table;
 
 /*
- * Hardware C-state auto-demotion may not always be optimal.
- * Indicate which enable bits to clear here.
- */
-static unsigned long long auto_demotion_disable_flags;
-
-/*
  * Set this flag for states where the HW flushes the TLB for us
  * and so we don't need cross-calls to keep it consistent.
  * If this flag is set, SW flushes the TLB, so even if the
@@ -319,27 +325,72 @@ static void auto_demotion_disable(void *dummy)
 	unsigned long long msr_bits;
 
 	rdmsrl(MSR_NHM_SNB_PKG_CST_CFG_CTL, msr_bits);
-	msr_bits &= ~auto_demotion_disable_flags;
+	msr_bits &= ~(icpu->auto_demotion_disable_flags);
 	wrmsrl(MSR_NHM_SNB_PKG_CST_CFG_CTL, msr_bits);
 }
 
+static const struct idle_cpu idle_cpu_nehalem = {
+	.state_table = nehalem_cstates,
+};
+
+static const struct idle_cpu idle_cpu_westmere = {
+	.state_table = nehalem_cstates,
+	.auto_demotion_disable_flags = NHM_C1_AUTO_DEMOTE | NHM_C3_AUTO_DEMOTE,
+};
+
+static const struct idle_cpu idle_cpu_atom = {
+	.state_table = atom_cstates,
+};
+
+static const struct idle_cpu idle_cpu_lincroft = {
+	.state_table = atom_cstates,
+	.auto_demotion_disable_flags = ATM_LNC_C6_AUTO_DEMOTE,
+};
+
+static const struct idle_cpu idle_cpu_snb = {
+	.state_table = snb_cstates,
+};
+
+#define ICPU(model, cpu) \
+	{ X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT, (unsigned long)&cpu }
+
+static const struct x86_cpu_id intel_idle_ids[] = {
+	ICPU(0x1a, idle_cpu_nehalem),
+	ICPU(0x1e, idle_cpu_nehalem),
+	ICPU(0x1f, idle_cpu_nehalem),
+	ICPU(0x25, idle_cpu_westmere),
+	ICPU(0x2c, idle_cpu_westmere),
+	ICPU(0x2f, idle_cpu_westmere),
+	ICPU(0x1c, idle_cpu_atom),
+	ICPU(0x26, idle_cpu_lincroft),
+	ICPU(0x2f, idle_cpu_westmere),
+	ICPU(0x2a, idle_cpu_snb),
+	ICPU(0x2d, idle_cpu_snb),
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, intel_idle_ids);
+
 /*
  * intel_idle_probe()
  */
 static int intel_idle_probe(void)
 {
 	unsigned int eax, ebx, ecx;
+	const struct x86_cpu_id *id;
 
 	if (max_cstate == 0) {
 		pr_debug(PREFIX "disabled\n");
 		return -EPERM;
 	}
 
-	if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL)
-		return -ENODEV;
-
-	if (!boot_cpu_has(X86_FEATURE_MWAIT))
+	id = x86_match_cpu(intel_idle_ids);
+	if (!id) {
+		if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL &&
+		    boot_cpu_data.x86 == 6)
+			pr_debug(PREFIX "does not run on family %d model %d\n",
+				boot_cpu_data.x86, boot_cpu_data.x86_model);
 		return -ENODEV;
+	}
 
 	if (boot_cpu_data.cpuid_level < CPUID_MWAIT_LEAF)
 		return -ENODEV;
@@ -353,43 +404,8 @@ static int intel_idle_probe(void)
 
 	pr_debug(PREFIX "MWAIT substates: 0x%x\n", mwait_substates);
 
-
-	if (boot_cpu_data.x86 != 6)	/* family 6 */
-		return -ENODEV;
-
-	switch (boot_cpu_data.x86_model) {
-
-	case 0x1A:	/* Core i7, Xeon 5500 series */
-	case 0x1E:	/* Core i7 and i5 Processor - Lynnfield Jasper Forest */
-	case 0x1F:	/* Core i7 and i5 Processor - Nehalem */
-	case 0x2E:	/* Nehalem-EX Xeon */
-	case 0x2F:	/* Westmere-EX Xeon */
-	case 0x25:	/* Westmere */
-	case 0x2C:	/* Westmere */
-		cpuidle_state_table = nehalem_cstates;
-		auto_demotion_disable_flags =
-			(NHM_C1_AUTO_DEMOTE | NHM_C3_AUTO_DEMOTE);
-		break;
-
-	case 0x1C:	/* 28 - Atom Processor */
-		cpuidle_state_table = atom_cstates;
-		break;
-
-	case 0x26:	/* 38 - Lincroft Atom Processor */
-		cpuidle_state_table = atom_cstates;
-		auto_demotion_disable_flags = ATM_LNC_C6_AUTO_DEMOTE;
-		break;
-
-	case 0x2A:	/* SNB */
-	case 0x2D:	/* SNB Xeon */
-		cpuidle_state_table = snb_cstates;
-		break;
-
-	default:
-		pr_debug(PREFIX "does not run on family %d model %d\n",
-			boot_cpu_data.x86, boot_cpu_data.x86_model);
-		return -ENODEV;
-	}
+	icpu = (const struct idle_cpu *)id->driver_data;
+	cpuidle_state_table = icpu->state_table;
 
 	if (boot_cpu_has(X86_FEATURE_ARAT))	/* Always Reliable APIC Timer */
 		lapic_timer_reliable_states = LAPIC_TIMER_ALWAYS_RELIABLE;
@@ -470,7 +486,7 @@ static int intel_idle_cpuidle_driver_init(void)
 		drv->state_count += 1;
 	}
 
-	if (auto_demotion_disable_flags)
+	if (icpu->auto_demotion_disable_flags)
 		on_each_cpu(auto_demotion_disable, NULL, 1);
 
 	return 0;
@@ -522,7 +538,7 @@ int intel_idle_cpu_init(int cpu)
 		return -EIO;
 	}
 
-	if (auto_demotion_disable_flags)
+	if (icpu->auto_demotion_disable_flags)
 		smp_call_function_single(cpu, auto_demotion_disable, NULL, 1);
 
 	return 0;
diff --git a/drivers/input/gameport/gameport.c b/drivers/input/gameport/gameport.c
index c351aa421f8..da739d9d190 100644
--- a/drivers/input/gameport/gameport.c
+++ b/drivers/input/gameport/gameport.c
@@ -449,7 +449,6 @@ static ssize_t gameport_rebind_driver(struct device *dev, struct device_attribut
 	} else if ((drv = driver_find(buf, &gameport_bus)) != NULL) {
 		gameport_disconnect_port(gameport);
 		error = gameport_bind_driver(gameport, to_gameport_driver(drv));
-		put_driver(drv);
 	} else {
 		error = -EINVAL;
 	}
diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c
index ba70058e2be..d0f7533dbf8 100644
--- a/drivers/input/serio/serio.c
+++ b/drivers/input/serio/serio.c
@@ -441,7 +441,6 @@ static ssize_t serio_rebind_driver(struct device *dev, struct device_attribute *
 	} else if ((drv = driver_find(buf, &serio_bus)) != NULL) {
 		serio_disconnect_port(serio);
 		error = serio_bind_driver(serio, to_serio_driver(drv));
-		put_driver(drv);
 		serio_remove_duplicate_events(serio, SERIO_RESCAN_PORT);
 	} else {
 		error = -EINVAL;
diff --git a/drivers/media/video/cx18/cx18-alsa-main.c b/drivers/media/video/cx18/cx18-alsa-main.c
index a1e6c2a3247..e118361c2e7 100644
--- a/drivers/media/video/cx18/cx18-alsa-main.c
+++ b/drivers/media/video/cx18/cx18-alsa-main.c
@@ -285,7 +285,6 @@ static void __exit cx18_alsa_exit(void)
 
 	drv = driver_find("cx18", &pci_bus_type);
 	ret = driver_for_each_device(drv, NULL, NULL, cx18_alsa_exit_callback);
-	put_driver(drv);
 
 	cx18_ext_init = NULL;
 	printk(KERN_INFO "cx18-alsa: module unload complete\n");
diff --git a/drivers/media/video/ivtv/ivtvfb.c b/drivers/media/video/ivtv/ivtvfb.c
index d0fbfcf7133..e5e7fa9e737 100644
--- a/drivers/media/video/ivtv/ivtvfb.c
+++ b/drivers/media/video/ivtv/ivtvfb.c
@@ -1293,7 +1293,6 @@ static int __init ivtvfb_init(void)
 
 	drv = driver_find("ivtv", &pci_bus_type);
 	err = driver_for_each_device(drv, NULL, &registered, ivtvfb_callback_init);
-	put_driver(drv);
 	if (!registered) {
 		printk(KERN_ERR "ivtvfb:  no cards found\n");
 		return -ENODEV;
@@ -1310,7 +1309,6 @@ static void ivtvfb_cleanup(void)
 
 	drv = driver_find("ivtv", &pci_bus_type);
 	err = driver_for_each_device(drv, NULL, NULL, ivtvfb_callback_cleanup);
-	put_driver(drv);
 }
 
 module_init(ivtvfb_init);
diff --git a/drivers/media/video/s5p-fimc/fimc-mdevice.c b/drivers/media/video/s5p-fimc/fimc-mdevice.c
index 8ea4ee116e4..63eccb55728 100644
--- a/drivers/media/video/s5p-fimc/fimc-mdevice.c
+++ b/drivers/media/video/s5p-fimc/fimc-mdevice.c
@@ -344,16 +344,13 @@ static int fimc_md_register_platform_entities(struct fimc_md *fmd)
 		return -ENODEV;
 	ret = driver_for_each_device(driver, NULL, fmd,
 				     fimc_register_callback);
-	put_driver(driver);
 	if (ret)
 		return ret;
 
 	driver = driver_find(CSIS_DRIVER_NAME, &platform_bus_type);
-	if (driver) {
+	if (driver)
 		ret = driver_for_each_device(driver, NULL, fmd,
 					     csis_register_callback);
-		put_driver(driver);
-	}
 	return ret;
 }
 
diff --git a/drivers/media/video/s5p-tv/mixer_video.c b/drivers/media/video/s5p-tv/mixer_video.c
index 7884baeff76..f7ca5cc143c 100644
--- a/drivers/media/video/s5p-tv/mixer_video.c
+++ b/drivers/media/video/s5p-tv/mixer_video.c
@@ -58,7 +58,6 @@ static struct v4l2_subdev *find_and_register_subdev(
 	}
 
 done:
-	put_driver(drv);
 	return sd;
 }
 
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index f320f466f03..e8c42d6a7d1 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -915,9 +915,7 @@ static int phy_probe(struct device *dev)
 
 	phydev = to_phy_device(dev);
 
-	/* Make sure the driver is held.
-	 * XXX -- Is this correct? */
-	drv = get_driver(phydev->dev.driver);
+	drv = phydev->dev.driver;
 	phydrv = to_phy_driver(drv);
 	phydev->drv = phydrv;
 
@@ -957,8 +955,6 @@ static int phy_remove(struct device *dev)
 
 	if (phydev->drv->remove)
 		phydev->drv->remove(phydev);
-
-	put_driver(dev->driver);
 	phydev->drv = NULL;
 
 	return 0;
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 3623d65f8b8..8d9616b821c 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -72,9 +72,7 @@ int pci_add_dynid(struct pci_driver *drv,
 	list_add_tail(&dynid->node, &drv->dynids.list);
 	spin_unlock(&drv->dynids.lock);
 
-	get_driver(&drv->driver);
 	retval = driver_attach(&drv->driver);
-	put_driver(&drv->driver);
 
 	return retval;
 }
@@ -190,43 +188,34 @@ store_remove_id(struct device_driver *driver, const char *buf, size_t count)
 static DRIVER_ATTR(remove_id, S_IWUSR, NULL, store_remove_id);
 
 static int
-pci_create_newid_file(struct pci_driver *drv)
+pci_create_newid_files(struct pci_driver *drv)
 {
 	int error = 0;
-	if (drv->probe != NULL)
-		error = driver_create_file(&drv->driver, &driver_attr_new_id);
-	return error;
-}
-
-static void pci_remove_newid_file(struct pci_driver *drv)
-{
-	driver_remove_file(&drv->driver, &driver_attr_new_id);
-}
 
-static int
-pci_create_removeid_file(struct pci_driver *drv)
-{
-	int error = 0;
-	if (drv->probe != NULL)
-		error = driver_create_file(&drv->driver,&driver_attr_remove_id);
+	if (drv->probe != NULL) {
+		error = driver_create_file(&drv->driver, &driver_attr_new_id);
+		if (error == 0) {
+			error = driver_create_file(&drv->driver,
+					&driver_attr_remove_id);
+			if (error)
+				driver_remove_file(&drv->driver,
+						&driver_attr_new_id);
+		}
+	}
 	return error;
 }
 
-static void pci_remove_removeid_file(struct pci_driver *drv)
+static void pci_remove_newid_files(struct pci_driver *drv)
 {
 	driver_remove_file(&drv->driver, &driver_attr_remove_id);
+	driver_remove_file(&drv->driver, &driver_attr_new_id);
 }
 #else /* !CONFIG_HOTPLUG */
-static inline int pci_create_newid_file(struct pci_driver *drv)
+static inline int pci_create_newid_files(struct pci_driver *drv)
 {
 	return 0;
 }
-static inline void pci_remove_newid_file(struct pci_driver *drv) {}
-static inline int pci_create_removeid_file(struct pci_driver *drv)
-{
-	return 0;
-}
-static inline void pci_remove_removeid_file(struct pci_driver *drv) {}
+static inline void pci_remove_newid_files(struct pci_driver *drv) {}
 #endif
 
 /**
@@ -1138,18 +1127,12 @@ int __pci_register_driver(struct pci_driver *drv, struct module *owner,
 	if (error)
 		goto out;
 
-	error = pci_create_newid_file(drv);
+	error = pci_create_newid_files(drv);
 	if (error)
 		goto out_newid;
-
-	error = pci_create_removeid_file(drv);
-	if (error)
-		goto out_removeid;
 out:
 	return error;
 
-out_removeid:
-	pci_remove_newid_file(drv);
 out_newid:
 	driver_unregister(&drv->driver);
 	goto out;
@@ -1168,8 +1151,7 @@ out_newid:
 void
 pci_unregister_driver(struct pci_driver *drv)
 {
-	pci_remove_removeid_file(drv);
-	pci_remove_newid_file(drv);
+	pci_remove_newid_files(drv);
 	driver_unregister(&drv->driver);
 	pci_free_dynids(drv);
 }
diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c
index 1620088a0e7..40109011092 100644
--- a/drivers/pci/xen-pcifront.c
+++ b/drivers/pci/xen-pcifront.c
@@ -593,7 +593,7 @@ static pci_ers_result_t pcifront_common_process(int cmd,
 	}
 	pdrv = pcidev->driver;
 
-	if (get_driver(&pdrv->driver)) {
+	if (pdrv) {
 		if (pdrv->err_handler && pdrv->err_handler->error_detected) {
 			dev_dbg(&pcidev->dev,
 				"trying to call AER service\n");
@@ -623,7 +623,6 @@ static pci_ers_result_t pcifront_common_process(int cmd,
 				}
 			}
 		}
-		put_driver(&pdrv->driver);
 	}
 	if (!flag)
 		result = PCI_ERS_RESULT_NONE;
diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c
index 1932029de48..079629bff95 100644
--- a/drivers/pcmcia/ds.c
+++ b/drivers/pcmcia/ds.c
@@ -127,10 +127,7 @@ pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count)
 	list_add_tail(&dynid->node, &pdrv->dynids.list);
 	mutex_unlock(&pdrv->dynids.lock);
 
-	if (get_driver(&pdrv->drv)) {
-		retval = driver_attach(&pdrv->drv);
-		put_driver(&pdrv->drv);
-	}
+	retval = driver_attach(&pdrv->drv);
 
 	if (retval)
 		return retval;
@@ -160,6 +157,11 @@ pcmcia_create_newid_file(struct pcmcia_driver *drv)
 	return error;
 }
 
+static void
+pcmcia_remove_newid_file(struct pcmcia_driver *drv)
+{
+	driver_remove_file(&drv->drv, &driver_attr_new_id);
+}
 
 /**
  * pcmcia_register_driver - register a PCMCIA driver with the bus core
@@ -204,6 +206,7 @@ EXPORT_SYMBOL(pcmcia_register_driver);
 void pcmcia_unregister_driver(struct pcmcia_driver *driver)
 {
 	pr_debug("unregistering driver %s\n", driver->name);
+	pcmcia_remove_newid_file(driver);
 	driver_unregister(&driver->drv);
 	pcmcia_free_dynids(driver);
 }
diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index 4f1989d27b1..5f1dc6fb570 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -580,7 +580,6 @@ void ccwgroup_driver_unregister(struct ccwgroup_driver *cdriver)
 	struct device *dev;
 
 	/* We don't want ccwgroup devices to live longer than their driver. */
-	get_driver(&cdriver->driver);
 	while ((dev = driver_find_device(&cdriver->driver, NULL, NULL,
 					 __ccwgroup_match_all))) {
 		struct ccwgroup_device *gdev = to_ccwgroupdev(dev);
@@ -592,7 +591,6 @@ void ccwgroup_driver_unregister(struct ccwgroup_driver *cdriver)
 		mutex_unlock(&gdev->reg_mutex);
 		put_device(dev);
 	}
-	put_driver(&cdriver->driver);
 	driver_unregister(&cdriver->driver);
 }
 EXPORT_SYMBOL(ccwgroup_driver_unregister);
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 47269858ecb..02d01525946 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1676,15 +1676,9 @@ struct ccw_device *get_ccwdev_by_busid(struct ccw_driver *cdrv,
 				       const char *bus_id)
 {
 	struct device *dev;
-	struct device_driver *drv;
 
-	drv = get_driver(&cdrv->driver);
-	if (!drv)
-		return NULL;
-
-	dev = driver_find_device(drv, NULL, (void *)bus_id,
+	dev = driver_find_device(&cdrv->driver, NULL, (void *)bus_id,
 				 __ccwdev_check_busid);
-	put_driver(drv);
 
 	return dev ? to_ccwdev(dev) : NULL;
 }
diff --git a/drivers/s390/net/smsgiucv_app.c b/drivers/s390/net/smsgiucv_app.c
index 4d2ea400042..32515a201bb 100644
--- a/drivers/s390/net/smsgiucv_app.c
+++ b/drivers/s390/net/smsgiucv_app.c
@@ -168,7 +168,7 @@ static int __init smsgiucv_app_init(void)
 	rc = dev_set_name(smsg_app_dev, KMSG_COMPONENT);
 	if (rc) {
 		kfree(smsg_app_dev);
-		goto fail_put_driver;
+		goto fail;
 	}
 	smsg_app_dev->bus = &iucv_bus;
 	smsg_app_dev->parent = iucv_root;
@@ -177,7 +177,7 @@ static int __init smsgiucv_app_init(void)
 	rc = device_register(smsg_app_dev);
 	if (rc) {
 		put_device(smsg_app_dev);
-		goto fail_put_driver;
+		goto fail;
 	}
 
 	/* convert sender to uppercase characters */
@@ -191,12 +191,11 @@ static int __init smsgiucv_app_init(void)
 	rc = smsg_register_callback(SMSG_PREFIX, smsg_app_callback);
 	if (rc) {
 		device_unregister(smsg_app_dev);
-		goto fail_put_driver;
+		goto fail;
 	}
 
 	rc = 0;
-fail_put_driver:
-	put_driver(smsgiucv_drv);
+fail:
 	return rc;
 }
 module_init(smsgiucv_app_init);
diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c
index bb6317fb925..ff109ae9476 100644
--- a/drivers/ssb/main.c
+++ b/drivers/ssb/main.c
@@ -140,19 +140,6 @@ static void ssb_device_put(struct ssb_device *dev)
 		put_device(dev->dev);
 }
 
-static inline struct ssb_driver *ssb_driver_get(struct ssb_driver *drv)
-{
-	if (drv)
-		get_driver(&drv->drv);
-	return drv;
-}
-
-static inline void ssb_driver_put(struct ssb_driver *drv)
-{
-	if (drv)
-		put_driver(&drv->drv);
-}
-
 static int ssb_device_resume(struct device *dev)
 {
 	struct ssb_device *ssb_dev = dev_to_ssb_dev(dev);
@@ -250,11 +237,9 @@ int ssb_devices_freeze(struct ssb_bus *bus, struct ssb_freeze_context *ctx)
 			ssb_device_put(sdev);
 			continue;
 		}
-		sdrv = ssb_driver_get(drv_to_ssb_drv(sdev->dev->driver));
-		if (!sdrv || SSB_WARN_ON(!sdrv->remove)) {
-			ssb_device_put(sdev);
+		sdrv = drv_to_ssb_drv(sdev->dev->driver);
+		if (SSB_WARN_ON(!sdrv->remove))
 			continue;
-		}
 		sdrv->remove(sdev);
 		ctx->device_frozen[i] = 1;
 	}
@@ -293,7 +278,6 @@ int ssb_devices_thaw(struct ssb_freeze_context *ctx)
 				   dev_name(sdev->dev));
 			result = err;
 		}
-		ssb_driver_put(sdrv);
 		ssb_device_put(sdev);
 	}
 
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index d40ff956881..4fee024ecc9 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -71,10 +71,7 @@ ssize_t usb_store_new_id(struct usb_dynids *dynids,
 	list_add_tail(&dynid->node, &dynids->list);
 	spin_unlock(&dynids->lock);
 
-	if (get_driver(driver)) {
-		retval = driver_attach(driver);
-		put_driver(driver);
-	}
+	retval = driver_attach(driver);
 
 	if (retval)
 		return retval;
@@ -132,43 +129,39 @@ store_remove_id(struct device_driver *driver, const char *buf, size_t count)
 }
 static DRIVER_ATTR(remove_id, S_IWUSR, NULL, store_remove_id);
 
-static int usb_create_newid_file(struct usb_driver *usb_drv)
+static int usb_create_newid_files(struct usb_driver *usb_drv)
 {
 	int error = 0;
 
 	if (usb_drv->no_dynamic_id)
 		goto exit;
 
-	if (usb_drv->probe != NULL)
+	if (usb_drv->probe != NULL) {
 		error = driver_create_file(&usb_drv->drvwrap.driver,
 					   &driver_attr_new_id);
+		if (error == 0) {
+			error = driver_create_file(&usb_drv->drvwrap.driver,
+					&driver_attr_remove_id);
+			if (error)
+				driver_remove_file(&usb_drv->drvwrap.driver,
+						&driver_attr_new_id);
+		}
+	}
 exit:
 	return error;
 }
 
-static void usb_remove_newid_file(struct usb_driver *usb_drv)
+static void usb_remove_newid_files(struct usb_driver *usb_drv)
 {
 	if (usb_drv->no_dynamic_id)
 		return;
 
-	if (usb_drv->probe != NULL)
+	if (usb_drv->probe != NULL) {
 		driver_remove_file(&usb_drv->drvwrap.driver,
-				   &driver_attr_new_id);
-}
-
-static int
-usb_create_removeid_file(struct usb_driver *drv)
-{
-	int error = 0;
-	if (drv->probe != NULL)
-		error = driver_create_file(&drv->drvwrap.driver,
 				&driver_attr_remove_id);
-	return error;
-}
-
-static void usb_remove_removeid_file(struct usb_driver *drv)
-{
-	driver_remove_file(&drv->drvwrap.driver, &driver_attr_remove_id);
+		driver_remove_file(&usb_drv->drvwrap.driver,
+				   &driver_attr_new_id);
+	}
 }
 
 static void usb_free_dynids(struct usb_driver *usb_drv)
@@ -183,22 +176,12 @@ static void usb_free_dynids(struct usb_driver *usb_drv)
 	spin_unlock(&usb_drv->dynids.lock);
 }
 #else
-static inline int usb_create_newid_file(struct usb_driver *usb_drv)
+static inline int usb_create_newid_files(struct usb_driver *usb_drv)
 {
 	return 0;
 }
 
-static void usb_remove_newid_file(struct usb_driver *usb_drv)
-{
-}
-
-static int
-usb_create_removeid_file(struct usb_driver *drv)
-{
-	return 0;
-}
-
-static void usb_remove_removeid_file(struct usb_driver *drv)
+static void usb_remove_newid_files(struct usb_driver *usb_drv)
 {
 }
 
@@ -875,22 +858,16 @@ int usb_register_driver(struct usb_driver *new_driver, struct module *owner,
 
 	usbfs_update_special();
 
-	retval = usb_create_newid_file(new_driver);
+	retval = usb_create_newid_files(new_driver);
 	if (retval)
 		goto out_newid;
 
-	retval = usb_create_removeid_file(new_driver);
-	if (retval)
-		goto out_removeid;
-
 	pr_info("%s: registered new interface driver %s\n",
 			usbcore_name, new_driver->name);
 
 out:
 	return retval;
 
-out_removeid:
-	usb_remove_newid_file(new_driver);
 out_newid:
 	driver_unregister(&new_driver->drvwrap.driver);
 
@@ -917,10 +894,9 @@ void usb_deregister(struct usb_driver *driver)
 	pr_info("%s: deregistering interface driver %s\n",
 			usbcore_name, driver->name);
 
-	usb_remove_removeid_file(driver);
-	usb_remove_newid_file(driver);
-	usb_free_dynids(driver);
+	usb_remove_newid_files(driver);
 	driver_unregister(&driver->drvwrap.driver);
+	usb_free_dynids(driver);
 
 	usbfs_update_special();
 }
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
index 64e1f7c67b0..c68e4270457 100644
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -171,14 +171,4 @@ MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
 
-static int __devinit dwc3_pci_init(void)
-{
-	return pci_register_driver(&dwc3_pci_driver);
-}
-module_init(dwc3_pci_init);
-
-static void __exit dwc3_pci_exit(void)
-{
-	pci_unregister_driver(&dwc3_pci_driver);
-}
-module_exit(dwc3_pci_exit);
+module_pci_driver(dwc3_pci_driver);
diff --git a/drivers/w1/masters/w1-gpio.c b/drivers/w1/masters/w1-gpio.c
index fcbe742188a..df600d14974 100644
--- a/drivers/w1/masters/w1-gpio.c
+++ b/drivers/w1/masters/w1-gpio.c
@@ -13,12 +13,11 @@
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/w1-gpio.h>
+#include <linux/gpio.h>
 
 #include "../w1.h"
 #include "../w1_int.h"
 
-#include <asm/gpio.h>
-
 static void w1_gpio_write_bit_dir(void *data, u8 bit)
 {
 	struct w1_gpio_platform_data *pdata = data;
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index 956d5ddddf6..b80bc846a15 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -23,9 +23,13 @@
 #include <linux/debugfs.h>
 #include <linux/fsnotify.h>
 #include <linux/string.h>
+#include <linux/seq_file.h>
+#include <linux/parser.h>
 #include <linux/magic.h>
 #include <linux/slab.h>
 
+#define DEBUGFS_DEFAULT_MODE	0755
+
 static struct vfsmount *debugfs_mount;
 static int debugfs_mount_count;
 static bool debugfs_registered;
@@ -125,11 +129,154 @@ static inline int debugfs_positive(struct dentry *dentry)
 	return dentry->d_inode && !d_unhashed(dentry);
 }
 
+struct debugfs_mount_opts {
+	uid_t uid;
+	gid_t gid;
+	umode_t mode;
+};
+
+enum {
+	Opt_uid,
+	Opt_gid,
+	Opt_mode,
+	Opt_err
+};
+
+static const match_table_t tokens = {
+	{Opt_uid, "uid=%u"},
+	{Opt_gid, "gid=%u"},
+	{Opt_mode, "mode=%o"},
+	{Opt_err, NULL}
+};
+
+struct debugfs_fs_info {
+	struct debugfs_mount_opts mount_opts;
+};
+
+static int debugfs_parse_options(char *data, struct debugfs_mount_opts *opts)
+{
+	substring_t args[MAX_OPT_ARGS];
+	int option;
+	int token;
+	char *p;
+
+	opts->mode = DEBUGFS_DEFAULT_MODE;
+
+	while ((p = strsep(&data, ",")) != NULL) {
+		if (!*p)
+			continue;
+
+		token = match_token(p, tokens, args);
+		switch (token) {
+		case Opt_uid:
+			if (match_int(&args[0], &option))
+				return -EINVAL;
+			opts->uid = option;
+			break;
+		case Opt_gid:
+			if (match_octal(&args[0], &option))
+				return -EINVAL;
+			opts->gid = option;
+			break;
+		case Opt_mode:
+			if (match_octal(&args[0], &option))
+				return -EINVAL;
+			opts->mode = option & S_IALLUGO;
+			break;
+		/*
+		 * We might like to report bad mount options here;
+		 * but traditionally debugfs has ignored all mount options
+		 */
+		}
+	}
+
+	return 0;
+}
+
+static int debugfs_apply_options(struct super_block *sb)
+{
+	struct debugfs_fs_info *fsi = sb->s_fs_info;
+	struct inode *inode = sb->s_root->d_inode;
+	struct debugfs_mount_opts *opts = &fsi->mount_opts;
+
+	inode->i_mode &= ~S_IALLUGO;
+	inode->i_mode |= opts->mode;
+
+	inode->i_uid = opts->uid;
+	inode->i_gid = opts->gid;
+
+	return 0;
+}
+
+static int debugfs_remount(struct super_block *sb, int *flags, char *data)
+{
+	int err;
+	struct debugfs_fs_info *fsi = sb->s_fs_info;
+
+	err = debugfs_parse_options(data, &fsi->mount_opts);
+	if (err)
+		goto fail;
+
+	debugfs_apply_options(sb);
+
+fail:
+	return err;
+}
+
+static int debugfs_show_options(struct seq_file *m, struct dentry *root)
+{
+	struct debugfs_fs_info *fsi = root->d_sb->s_fs_info;
+	struct debugfs_mount_opts *opts = &fsi->mount_opts;
+
+	if (opts->uid != 0)
+		seq_printf(m, ",uid=%u", opts->uid);
+	if (opts->gid != 0)
+		seq_printf(m, ",gid=%u", opts->gid);
+	if (opts->mode != DEBUGFS_DEFAULT_MODE)
+		seq_printf(m, ",mode=%o", opts->mode);
+
+	return 0;
+}
+
+static const struct super_operations debugfs_super_operations = {
+	.statfs		= simple_statfs,
+	.remount_fs	= debugfs_remount,
+	.show_options	= debugfs_show_options,
+};
+
 static int debug_fill_super(struct super_block *sb, void *data, int silent)
 {
 	static struct tree_descr debug_files[] = {{""}};
+	struct debugfs_fs_info *fsi;
+	int err;
+
+	save_mount_options(sb, data);
+
+	fsi = kzalloc(sizeof(struct debugfs_fs_info), GFP_KERNEL);
+	sb->s_fs_info = fsi;
+	if (!fsi) {
+		err = -ENOMEM;
+		goto fail;
+	}
+
+	err = debugfs_parse_options(data, &fsi->mount_opts);
+	if (err)
+		goto fail;
+
+	err  =  simple_fill_super(sb, DEBUGFS_MAGIC, debug_files);
+	if (err)
+		goto fail;
+
+	sb->s_op = &debugfs_super_operations;
+
+	debugfs_apply_options(sb);
+
+	return 0;
 
-	return simple_fill_super(sb, DEBUGFS_MAGIC, debug_files);
+fail:
+	kfree(fsi);
+	sb->s_fs_info = NULL;
+	return err;
 }
 
 static struct dentry *debug_mount(struct file_system_type *fs_type,
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 7fdf6a7b743..dd3779cf3a3 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -22,76 +22,100 @@
 #include <linux/mutex.h>
 #include <linux/slab.h>
 #include <linux/security.h>
+#include <linux/hash.h>
 #include "sysfs.h"
 
 DEFINE_MUTEX(sysfs_mutex);
 DEFINE_SPINLOCK(sysfs_assoc_lock);
 
+#define to_sysfs_dirent(X) rb_entry((X), struct sysfs_dirent, s_rb);
+
 static DEFINE_SPINLOCK(sysfs_ino_lock);
 static DEFINE_IDA(sysfs_ino_ida);
 
 /**
- *	sysfs_link_sibling - link sysfs_dirent into sibling list
+ *	sysfs_name_hash
+ *	@ns:   Namespace tag to hash
+ *	@name: Null terminated string to hash
+ *
+ *	Returns 31 bit hash of ns + name (so it fits in an off_t )
+ */
+static unsigned int sysfs_name_hash(const void *ns, const char *name)
+{
+	unsigned long hash = init_name_hash();
+	unsigned int len = strlen(name);
+	while (len--)
+		hash = partial_name_hash(*name++, hash);
+	hash = ( end_name_hash(hash) ^ hash_ptr( (void *)ns, 31 ) );
+	hash &= 0x7fffffffU;
+	/* Reserve hash numbers 0, 1 and INT_MAX for magic directory entries */
+	if (hash < 1)
+		hash += 2;
+	if (hash >= INT_MAX)
+		hash = INT_MAX - 1;
+	return hash;
+}
+
+static int sysfs_name_compare(unsigned int hash, const void *ns,
+	const char *name, const struct sysfs_dirent *sd)
+{
+	if (hash != sd->s_hash)
+		return hash - sd->s_hash;
+	if (ns != sd->s_ns)
+		return ns - sd->s_ns;
+	return strcmp(name, sd->s_name);
+}
+
+static int sysfs_sd_compare(const struct sysfs_dirent *left,
+			    const struct sysfs_dirent *right)
+{
+	return sysfs_name_compare(left->s_hash, left->s_ns, left->s_name,
+				  right);
+}
+
+/**
+ *	sysfs_link_subling - link sysfs_dirent into sibling rbtree
  *	@sd: sysfs_dirent of interest
  *
- *	Link @sd into its sibling list which starts from
+ *	Link @sd into its sibling rbtree which starts from
  *	sd->s_parent->s_dir.children.
  *
  *	Locking:
  *	mutex_lock(sysfs_mutex)
+ *
+ *	RETURNS:
+ *	0 on susccess -EEXIST on failure.
  */
-static void sysfs_link_sibling(struct sysfs_dirent *sd)
+static int sysfs_link_sibling(struct sysfs_dirent *sd)
 {
-	struct sysfs_dirent *parent_sd = sd->s_parent;
-
-	struct rb_node **p;
-	struct rb_node *parent;
-
-	if (sysfs_type(sd) == SYSFS_DIR)
-		parent_sd->s_dir.subdirs++;
-
-	p = &parent_sd->s_dir.inode_tree.rb_node;
-	parent = NULL;
-	while (*p) {
-		parent = *p;
-#define node	rb_entry(parent, struct sysfs_dirent, inode_node)
-		if (sd->s_ino < node->s_ino) {
-			p = &node->inode_node.rb_left;
-		} else if (sd->s_ino > node->s_ino) {
-			p = &node->inode_node.rb_right;
-		} else {
-			printk(KERN_CRIT "sysfs: inserting duplicate inode '%lx'\n",
-			       (unsigned long) sd->s_ino);
-			BUG();
-		}
-#undef node
-	}
-	rb_link_node(&sd->inode_node, parent, p);
-	rb_insert_color(&sd->inode_node, &parent_sd->s_dir.inode_tree);
-
-	p = &parent_sd->s_dir.name_tree.rb_node;
-	parent = NULL;
-	while (*p) {
-		int c;
-		parent = *p;
-#define node	rb_entry(parent, struct sysfs_dirent, name_node)
-		c = strcmp(sd->s_name, node->s_name);
-		if (c < 0) {
-			p = &node->name_node.rb_left;
-		} else {
-			p = &node->name_node.rb_right;
-		}
-#undef node
+	struct rb_node **node = &sd->s_parent->s_dir.children.rb_node;
+	struct rb_node *parent = NULL;
+
+	while (*node) {
+		struct sysfs_dirent *pos;
+		int result;
+
+		pos = to_sysfs_dirent(*node);
+		parent = *node;
+		result = sysfs_sd_compare(sd, pos);
+		if (result < 0)
+			node = &pos->s_rb.rb_left;
+		else if (result > 0)
+			node = &pos->s_rb.rb_right;
+		else
+			return -EEXIST;
 	}
-	rb_link_node(&sd->name_node, parent, p);
-	rb_insert_color(&sd->name_node, &parent_sd->s_dir.name_tree);
+	/* add new node and rebalance the tree */
+	rb_link_node(&sd->s_rb, parent, node);
+	rb_insert_color(&sd->s_rb, &sd->s_parent->s_dir.children);
+	return 0;
 }
 
 /**
- *	sysfs_unlink_sibling - unlink sysfs_dirent from sibling list
+ *	sysfs_unlink_sibling - unlink sysfs_dirent from sibling rbtree
  *	@sd: sysfs_dirent of interest
  *
- *	Unlink @sd from its sibling list which starts from
+ *	Unlink @sd from its sibling rbtree which starts from
  *	sd->s_parent->s_dir.children.
  *
  *	Locking:
@@ -99,11 +123,7 @@ static void sysfs_link_sibling(struct sysfs_dirent *sd)
  */
 static void sysfs_unlink_sibling(struct sysfs_dirent *sd)
 {
-	if (sysfs_type(sd) == SYSFS_DIR)
-		sd->s_parent->s_dir.subdirs--;
-
-	rb_erase(&sd->inode_node, &sd->s_parent->s_dir.inode_tree);
-	rb_erase(&sd->name_node, &sd->s_parent->s_dir.name_tree);
+	rb_erase(&sd->s_rb, &sd->s_parent->s_dir.children);
 }
 
 /**
@@ -198,7 +218,7 @@ static void sysfs_deactivate(struct sysfs_dirent *sd)
 	rwsem_release(&sd->dep_map, 1, _RET_IP_);
 }
 
-static int sysfs_alloc_ino(ino_t *pino)
+static int sysfs_alloc_ino(unsigned int *pino)
 {
 	int ino, rc;
 
@@ -217,7 +237,7 @@ static int sysfs_alloc_ino(ino_t *pino)
 	return rc;
 }
 
-static void sysfs_free_ino(ino_t ino)
+static void sysfs_free_ino(unsigned int ino)
 {
 	spin_lock(&sysfs_ino_lock);
 	ida_remove(&sysfs_ino_ida, ino);
@@ -402,6 +422,7 @@ void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt,
 int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
 {
 	struct sysfs_inode_attrs *ps_iattr;
+	int ret;
 
 	if (!!sysfs_ns_type(acxt->parent_sd) != !!sd->s_ns) {
 		WARN(1, KERN_WARNING "sysfs: ns %s in '%s' for '%s'\n",
@@ -410,12 +431,12 @@ int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
 		return -EINVAL;
 	}
 
-	if (sysfs_find_dirent(acxt->parent_sd, sd->s_ns, sd->s_name))
-		return -EEXIST;
-
+	sd->s_hash = sysfs_name_hash(sd->s_ns, sd->s_name);
 	sd->s_parent = sysfs_get(acxt->parent_sd);
 
-	sysfs_link_sibling(sd);
+	ret = sysfs_link_sibling(sd);
+	if (ret)
+		return ret;
 
 	/* Update timestamps on the parent */
 	ps_iattr = acxt->parent_sd->s_iattr;
@@ -565,8 +586,8 @@ struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd,
 				       const void *ns,
 				       const unsigned char *name)
 {
-	struct rb_node *p = parent_sd->s_dir.name_tree.rb_node;
-	struct sysfs_dirent *found = NULL;
+	struct rb_node *node = parent_sd->s_dir.children.rb_node;
+	unsigned int hash;
 
 	if (!!sysfs_ns_type(parent_sd) != !!ns) {
 		WARN(1, KERN_WARNING "sysfs: ns %s in '%s' for '%s'\n",
@@ -575,33 +596,21 @@ struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd,
 		return NULL;
 	}
 
-	while (p) {
-		int c;
-#define node	rb_entry(p, struct sysfs_dirent, name_node)
-		c = strcmp(name, node->s_name);
-		if (c < 0) {
-			p = node->name_node.rb_left;
-		} else if (c > 0) {
-			p = node->name_node.rb_right;
-		} else {
-			found = node;
-			p = node->name_node.rb_left;
-		}
-#undef node
-	}
-
-	if (found) {
-		while (found->s_ns != ns) {
-			p = rb_next(&found->name_node);
-			if (!p)
-				return NULL;
-			found = rb_entry(p, struct sysfs_dirent, name_node);
-			if (strcmp(name, found->s_name))
-				return NULL;
-		}
+	hash = sysfs_name_hash(ns, name);
+	while (node) {
+		struct sysfs_dirent *sd;
+		int result;
+
+		sd = to_sysfs_dirent(node);
+		result = sysfs_name_compare(hash, ns, name, sd);
+		if (result < 0)
+			node = node->rb_left;
+		else if (result > 0)
+			node = node->rb_right;
+		else
+			return sd;
 	}
-
-	return found;
+	return NULL;
 }
 
 /**
@@ -804,9 +813,9 @@ static void __sysfs_remove_dir(struct sysfs_dirent *dir_sd)
 
 	pr_debug("sysfs %s: removing dir\n", dir_sd->s_name);
 	sysfs_addrm_start(&acxt, dir_sd);
-	pos = rb_first(&dir_sd->s_dir.inode_tree);
+	pos = rb_first(&dir_sd->s_dir.children);
 	while (pos) {
-		struct sysfs_dirent *sd = rb_entry(pos, struct sysfs_dirent, inode_node);
+		struct sysfs_dirent *sd = to_sysfs_dirent(pos);
 		pos = rb_next(pos);
 		if (sysfs_type(sd) != SYSFS_DIR)
 			sysfs_remove_one(&acxt, sd);
@@ -863,6 +872,7 @@ int sysfs_rename(struct sysfs_dirent *sd,
 
 		dup_name = sd->s_name;
 		sd->s_name = new_name;
+		sd->s_hash = sysfs_name_hash(sd->s_ns, sd->s_name);
 	}
 
 	/* Move to the appropriate place in the appropriate directories rbtree. */
@@ -919,38 +929,36 @@ static int sysfs_dir_release(struct inode *inode, struct file *filp)
 }
 
 static struct sysfs_dirent *sysfs_dir_pos(const void *ns,
-	struct sysfs_dirent *parent_sd,	ino_t ino, struct sysfs_dirent *pos)
+	struct sysfs_dirent *parent_sd,	loff_t hash, struct sysfs_dirent *pos)
 {
 	if (pos) {
 		int valid = !(pos->s_flags & SYSFS_FLAG_REMOVED) &&
 			pos->s_parent == parent_sd &&
-			ino == pos->s_ino;
+			hash == pos->s_hash;
 		sysfs_put(pos);
 		if (!valid)
 			pos = NULL;
 	}
-	if (!pos && (ino > 1) && (ino < INT_MAX)) {
-		struct rb_node *p = parent_sd->s_dir.inode_tree.rb_node;
-		while (p) {
-#define node	rb_entry(p, struct sysfs_dirent, inode_node)
-			if (ino < node->s_ino) {
-				pos = node;
-				p = node->inode_node.rb_left;
-			} else if (ino > node->s_ino) {
-				p = node->inode_node.rb_right;
-			} else {
-				pos = node;
+	if (!pos && (hash > 1) && (hash < INT_MAX)) {
+		struct rb_node *node = parent_sd->s_dir.children.rb_node;
+		while (node) {
+			pos = to_sysfs_dirent(node);
+
+			if (hash < pos->s_hash)
+				node = node->rb_left;
+			else if (hash > pos->s_hash)
+				node = node->rb_right;
+			else
 				break;
-			}
-#undef node
 		}
 	}
+	/* Skip over entries in the wrong namespace */
 	while (pos && pos->s_ns != ns) {
-		struct rb_node *p = rb_next(&pos->inode_node);
-		if (!p)
+		struct rb_node *node = rb_next(&pos->s_rb);
+		if (!node)
 			pos = NULL;
 		else
-			pos = rb_entry(p, struct sysfs_dirent, inode_node);
+			pos = to_sysfs_dirent(node);
 	}
 	return pos;
 }
@@ -960,11 +968,11 @@ static struct sysfs_dirent *sysfs_dir_next_pos(const void *ns,
 {
 	pos = sysfs_dir_pos(ns, parent_sd, ino, pos);
 	if (pos) do {
-		struct rb_node *p = rb_next(&pos->inode_node);
-		if (!p)
+		struct rb_node *node = rb_next(&pos->s_rb);
+		if (!node)
 			pos = NULL;
 		else
-			pos = rb_entry(p, struct sysfs_dirent, inode_node);
+			pos = to_sysfs_dirent(node);
 	} while (pos && pos->s_ns != ns);
 	return pos;
 }
@@ -1006,7 +1014,7 @@ static int sysfs_readdir(struct file * filp, void * dirent, filldir_t filldir)
 		len = strlen(name);
 		ino = pos->s_ino;
 		type = dt_type(pos);
-		filp->f_pos = ino;
+		filp->f_pos = pos->s_hash;
 		filp->private_data = sysfs_get(pos);
 
 		mutex_unlock(&sysfs_mutex);
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 85eb81683a2..4291fd1617a 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -216,9 +216,6 @@ static void sysfs_refresh_inode(struct sysfs_dirent *sd, struct inode *inode)
 					    iattrs->ia_secdata,
 					    iattrs->ia_secdata_len);
 	}
-
-	if (sysfs_type(sd) == SYSFS_DIR)
-		set_nlink(inode, sd->s_dir.subdirs + 2);
 }
 
 int sysfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index e34f0d99ea4..140f26a3428 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -36,7 +36,7 @@ struct sysfs_dirent sysfs_root = {
 	.s_name		= "",
 	.s_count	= ATOMIC_INIT(1),
 	.s_flags	= SYSFS_DIR | (KOBJ_NS_TYPE_NONE << SYSFS_NS_TYPE_SHIFT),
-	.s_mode		= S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO,
+	.s_mode		= S_IFDIR | S_IRUGO | S_IXUGO,
 	.s_ino		= 1,
 };
 
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index 7484a36ee67..6289a00287d 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -19,10 +19,8 @@ struct sysfs_open_dirent;
 struct sysfs_elem_dir {
 	struct kobject		*kobj;
 
-	unsigned long		subdirs;
-
-	struct rb_root		inode_tree;
-	struct rb_root		name_tree;
+	/* children rbtree starts here and goes through sd->s_rb */
+	struct rb_root		children;
 };
 
 struct sysfs_elem_symlink {
@@ -62,8 +60,7 @@ struct sysfs_dirent {
 	struct sysfs_dirent	*s_parent;
 	const char		*s_name;
 
-	struct rb_node		inode_node;
-	struct rb_node		name_node;
+	struct rb_node		s_rb;
 
 	union {
 		struct completion	*completion;
@@ -71,6 +68,7 @@ struct sysfs_dirent {
 	} u;
 
 	const void		*s_ns; /* namespace tag */
+	unsigned int		s_hash; /* ns + name hash */
 	union {
 		struct sysfs_elem_dir		s_dir;
 		struct sysfs_elem_symlink	s_symlink;
@@ -78,9 +76,9 @@ struct sysfs_dirent {
 		struct sysfs_elem_bin_attr	s_bin_attr;
 	};
 
-	unsigned int		s_flags;
+	unsigned short		s_flags;
 	umode_t 		s_mode;
-	ino_t			s_ino;
+	unsigned int		s_ino;
 	struct sysfs_inode_attrs *s_iattr;
 };
 
@@ -95,11 +93,11 @@ struct sysfs_dirent {
 #define SYSFS_ACTIVE_REF		(SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR)
 
 /* identify any namespace tag on sysfs_dirents */
-#define SYSFS_NS_TYPE_MASK		0xff00
+#define SYSFS_NS_TYPE_MASK		0xf00
 #define SYSFS_NS_TYPE_SHIFT		8
 
 #define SYSFS_FLAG_MASK			~(SYSFS_NS_TYPE_MASK|SYSFS_TYPE_MASK)
-#define SYSFS_FLAG_REMOVED		0x020000
+#define SYSFS_FLAG_REMOVED		0x02000
 
 static inline unsigned int sysfs_type(struct sysfs_dirent *sd)
 {
diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index 8cf7e98a2c7..9d650476d5d 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -225,6 +225,7 @@ struct acpi_processor_errata {
 	} piix4;
 };
 
+extern void acpi_processor_load_module(struct acpi_processor *pr);
 extern int acpi_processor_preregister_performance(struct
 						  acpi_processor_performance
 						  __percpu *performance);
diff --git a/include/linux/connector.h b/include/linux/connector.h
index 3c9c54fd569..76384074262 100644
--- a/include/linux/connector.h
+++ b/include/linux/connector.h
@@ -43,6 +43,7 @@
 #define CN_IDX_DRBD			0x8
 #define CN_VAL_DRBD			0x1
 #define CN_KVP_IDX			0x9	/* HyperV KVP */
+#define CN_KVP_VAL			0x1	/* queries from the kernel */
 
 #define CN_NETLINK_USERS		10	/* Highest index + 1 */
 
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 1f6587590a1..6e53b4823d7 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -44,6 +44,13 @@ extern ssize_t arch_cpu_release(const char *, size_t);
 #endif
 struct notifier_block;
 
+#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE
+extern int arch_cpu_uevent(struct device *dev, struct kobj_uevent_env *env);
+extern ssize_t arch_print_cpu_modalias(struct device *dev,
+				       struct device_attribute *attr,
+				       char *bufptr);
+#endif
+
 /*
  * CPU notifier priorities.
  */
diff --git a/include/linux/device.h b/include/linux/device.h
index b63fb393aa5..f62e21689fd 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -238,8 +238,6 @@ struct device_driver {
 extern int __must_check driver_register(struct device_driver *drv);
 extern void driver_unregister(struct device_driver *drv);
 
-extern struct device_driver *get_driver(struct device_driver *drv);
-extern void put_driver(struct device_driver *drv);
 extern struct device_driver *driver_find(const char *name,
 					 struct bus_type *bus);
 extern int driver_probe_done(void);
@@ -946,14 +944,14 @@ int _dev_info(const struct device *dev, const char *fmt, ...)
 
 #define dev_info(dev, fmt, arg...) _dev_info(dev, fmt, ##arg)
 
-#if defined(DEBUG)
-#define dev_dbg(dev, format, arg...)		\
-	dev_printk(KERN_DEBUG, dev, format, ##arg)
-#elif defined(CONFIG_DYNAMIC_DEBUG)
+#if defined(CONFIG_DYNAMIC_DEBUG)
 #define dev_dbg(dev, format, ...)		     \
 do {						     \
 	dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \
 } while (0)
+#elif defined(DEBUG)
+#define dev_dbg(dev, format, arg...)		\
+	dev_printk(KERN_DEBUG, dev, format, ##arg)
 #else
 #define dev_dbg(dev, format, arg...)				\
 ({								\
diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
index 0564e3c3988..7e3c53a900d 100644
--- a/include/linux/dynamic_debug.h
+++ b/include/linux/dynamic_debug.h
@@ -15,20 +15,24 @@ struct _ddebug {
 	const char *function;
 	const char *filename;
 	const char *format;
-	unsigned int lineno:24;
+	unsigned int lineno:18;
 	/*
  	 * The flags field controls the behaviour at the callsite.
  	 * The bits here are changed dynamically when the user
 	 * writes commands to <debugfs>/dynamic_debug/control
 	 */
-#define _DPRINTK_FLAGS_PRINT   (1<<0)  /* printk() a message using the format */
+#define _DPRINTK_FLAGS_NONE	0
+#define _DPRINTK_FLAGS_PRINT	(1<<0) /* printk() a message using the format */
 #define _DPRINTK_FLAGS_INCL_MODNAME	(1<<1)
 #define _DPRINTK_FLAGS_INCL_FUNCNAME	(1<<2)
 #define _DPRINTK_FLAGS_INCL_LINENO	(1<<3)
 #define _DPRINTK_FLAGS_INCL_TID		(1<<4)
+#if defined DEBUG
+#define _DPRINTK_FLAGS_DEFAULT _DPRINTK_FLAGS_PRINT
+#else
 #define _DPRINTK_FLAGS_DEFAULT 0
+#endif
 	unsigned int flags:8;
-	char enabled;
 } __attribute__((aligned(8)));
 
 
@@ -62,21 +66,20 @@ int __dynamic_netdev_dbg(struct _ddebug *descriptor,
 		.format = (fmt),				\
 		.lineno = __LINE__,				\
 		.flags =  _DPRINTK_FLAGS_DEFAULT,		\
-		.enabled = false,				\
 	}
 
 #define dynamic_pr_debug(fmt, ...)				\
 do {								\
 	DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt);		\
-	if (unlikely(descriptor.enabled))			\
+	if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT))	\
 		__dynamic_pr_debug(&descriptor, pr_fmt(fmt),	\
 				   ##__VA_ARGS__);		\
 } while (0)
 
 #define dynamic_dev_dbg(dev, fmt, ...)				\
 do {								\
-	DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt);	\
-	if (unlikely(descriptor.enabled))			\
+	DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt);		\
+	if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT))	\
 		__dynamic_dev_dbg(&descriptor, dev, fmt,	\
 				  ##__VA_ARGS__);		\
 } while (0)
@@ -84,7 +87,7 @@ do {								\
 #define dynamic_netdev_dbg(dev, fmt, ...)			\
 do {								\
 	DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt);		\
-	if (unlikely(descriptor.enabled))			\
+	if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT))	\
 		__dynamic_netdev_dbg(&descriptor, dev, fmt,	\
 				     ##__VA_ARGS__);		\
 } while (0)
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 0ae065a5fcb..e57a6c6ee0e 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -25,6 +25,147 @@
 #ifndef _HYPERV_H
 #define _HYPERV_H
 
+#include <linux/types.h>
+
+/*
+ * An implementation of HyperV key value pair (KVP) functionality for Linux.
+ *
+ *
+ * Copyright (C) 2010, Novell, Inc.
+ * Author : K. Y. Srinivasan <ksrinivasan@novell.com>
+ *
+ */
+
+/*
+ * Maximum value size - used for both key names and value data, and includes
+ * any applicable NULL terminators.
+ *
+ * Note:  This limit is somewhat arbitrary, but falls easily within what is
+ * supported for all native guests (back to Win 2000) and what is reasonable
+ * for the IC KVP exchange functionality.  Note that Windows Me/98/95 are
+ * limited to 255 character key names.
+ *
+ * MSDN recommends not storing data values larger than 2048 bytes in the
+ * registry.
+ *
+ * Note:  This value is used in defining the KVP exchange message - this value
+ * cannot be modified without affecting the message size and compatibility.
+ */
+
+/*
+ * bytes, including any null terminators
+ */
+#define HV_KVP_EXCHANGE_MAX_VALUE_SIZE          (2048)
+
+
+/*
+ * Maximum key size - the registry limit for the length of an entry name
+ * is 256 characters, including the null terminator
+ */
+
+#define HV_KVP_EXCHANGE_MAX_KEY_SIZE            (512)
+
+/*
+ * In Linux, we implement the KVP functionality in two components:
+ * 1) The kernel component which is packaged as part of the hv_utils driver
+ * is responsible for communicating with the host and responsible for
+ * implementing the host/guest protocol. 2) A user level daemon that is
+ * responsible for data gathering.
+ *
+ * Host/Guest Protocol: The host iterates over an index and expects the guest
+ * to assign a key name to the index and also return the value corresponding to
+ * the key. The host will have atmost one KVP transaction outstanding at any
+ * given point in time. The host side iteration stops when the guest returns
+ * an error. Microsoft has specified the following mapping of key names to
+ * host specified index:
+ *
+ *	Index		Key Name
+ *	0		FullyQualifiedDomainName
+ *	1		IntegrationServicesVersion
+ *	2		NetworkAddressIPv4
+ *	3		NetworkAddressIPv6
+ *	4		OSBuildNumber
+ *	5		OSName
+ *	6		OSMajorVersion
+ *	7		OSMinorVersion
+ *	8		OSVersion
+ *	9		ProcessorArchitecture
+ *
+ * The Windows host expects the Key Name and Key Value to be encoded in utf16.
+ *
+ * Guest Kernel/KVP Daemon Protocol: As noted earlier, we implement all of the
+ * data gathering functionality in a user mode daemon. The user level daemon
+ * is also responsible for binding the key name to the index as well. The
+ * kernel and user-level daemon communicate using a connector channel.
+ *
+ * The user mode component first registers with the
+ * the kernel component. Subsequently, the kernel component requests, data
+ * for the specified keys. In response to this message the user mode component
+ * fills in the value corresponding to the specified key. We overload the
+ * sequence field in the cn_msg header to define our KVP message types.
+ *
+ *
+ * The kernel component simply acts as a conduit for communication between the
+ * Windows host and the user-level daemon. The kernel component passes up the
+ * index received from the Host to the user-level daemon. If the index is
+ * valid (supported), the corresponding key as well as its
+ * value (both are strings) is returned. If the index is invalid
+ * (not supported), a NULL key string is returned.
+ */
+
+
+/*
+ * Registry value types.
+ */
+
+#define REG_SZ 1
+
+enum hv_kvp_exchg_op {
+	KVP_OP_GET = 0,
+	KVP_OP_SET,
+	KVP_OP_DELETE,
+	KVP_OP_ENUMERATE,
+	KVP_OP_REGISTER,
+	KVP_OP_COUNT /* Number of operations, must be last. */
+};
+
+enum hv_kvp_exchg_pool {
+	KVP_POOL_EXTERNAL = 0,
+	KVP_POOL_GUEST,
+	KVP_POOL_AUTO,
+	KVP_POOL_AUTO_EXTERNAL,
+	KVP_POOL_AUTO_INTERNAL,
+	KVP_POOL_COUNT /* Number of pools, must be last. */
+};
+
+struct hv_kvp_hdr {
+	__u8 operation;
+	__u8 pool;
+	__u16 pad;
+} __attribute__((packed));
+
+struct hv_kvp_exchg_msg_value {
+	__u32 value_type;
+	__u32 key_size;
+	__u32 value_size;
+	__u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
+	__u8 value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE];
+} __attribute__((packed));
+
+struct hv_kvp_msg_enumerate {
+	__u32 index;
+	struct hv_kvp_exchg_msg_value data;
+} __attribute__((packed));
+
+struct hv_kvp_msg {
+	struct hv_kvp_hdr	kvp_hdr;
+	union {
+		struct hv_kvp_msg_enumerate     kvp_enum_data;
+		char    kvp_version[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
+	} body;
+} __attribute__((packed));
+
+#ifdef __KERNEL__
 #include <linux/scatterlist.h>
 #include <linux/list.h>
 #include <linux/uuid.h>
@@ -870,4 +1011,9 @@ struct hyperv_service_callback {
 extern void vmbus_prep_negotiate_resp(struct icmsg_hdr *,
 				      struct icmsg_negotiate *, u8 *);
 
+int hv_kvp_init(struct hv_util_service *);
+void hv_kvp_deinit(void);
+void hv_kvp_onchannelcallback(void *);
+
+#endif /* __KERNEL__ */
 #endif /* _HYPERV_H */
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 83ac0713ed0..fb69ad191ad 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -560,4 +560,25 @@ struct amba_id {
 #endif
 };
 
+/*
+ * Match x86 CPUs for CPU specific drivers.
+ * See documentation of "x86_match_cpu" for details.
+ */
+
+struct x86_cpu_id {
+	__u16 vendor;
+	__u16 family;
+	__u16 model;
+	__u16 feature;	/* bit index */
+	kernel_ulong_t driver_data;
+};
+
+#define X86_FEATURE_MATCH(x) \
+	{ X86_VENDOR_ANY, X86_FAMILY_ANY, X86_MODEL_ANY, x }
+
+#define X86_VENDOR_ANY 0xffff
+#define X86_FAMILY_ANY 0
+#define X86_MODEL_ANY  0
+#define X86_FEATURE_ANY 0	/* Same as FPU, you can't test for that */
+
 #endif /* LINUX_MOD_DEVICETABLE_H */
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 0eac07c9525..f486f635e7b 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2687,14 +2687,14 @@ int netdev_info(const struct net_device *dev, const char *format, ...);
 #define MODULE_ALIAS_NETDEV(device) \
 	MODULE_ALIAS("netdev-" device)
 
-#if defined(DEBUG)
-#define netdev_dbg(__dev, format, args...)			\
-	netdev_printk(KERN_DEBUG, __dev, format, ##args)
-#elif defined(CONFIG_DYNAMIC_DEBUG)
+#if defined(CONFIG_DYNAMIC_DEBUG)
 #define netdev_dbg(__dev, format, args...)			\
 do {								\
 	dynamic_netdev_dbg(__dev, format, ##args);		\
 } while (0)
+#elif defined(DEBUG)
+#define netdev_dbg(__dev, format, args...)			\
+	netdev_printk(KERN_DEBUG, __dev, format, ##args)
 #else
 #define netdev_dbg(__dev, format, args...)			\
 ({								\
diff --git a/include/linux/pci.h b/include/linux/pci.h
index a16b1df3def..d4afd703e94 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -946,6 +946,19 @@ int __must_check __pci_register_driver(struct pci_driver *, struct module *,
 	__pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
 
 void pci_unregister_driver(struct pci_driver *dev);
+
+/**
+ * module_pci_driver() - Helper macro for registering a PCI driver
+ * @__pci_driver: pci_driver struct
+ *
+ * Helper macro for PCI drivers which do not do anything special in module
+ * init/exit. This eliminates a lot of boilerplate. Each module may only
+ * use this macro once, and calling it replaces module_init() and module_exit()
+ */
+#define module_pci_driver(__pci_driver) \
+	module_driver(__pci_driver, pci_register_driver, \
+		       pci_unregister_driver)
+
 void pci_remove_behind_bridge(struct pci_dev *dev);
 struct pci_driver *pci_dev_driver(const struct pci_dev *dev);
 int pci_add_dynid(struct pci_driver *drv,
diff --git a/include/linux/printk.h b/include/linux/printk.h
index f0e22f75143..f9abd9357a0 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -180,13 +180,13 @@ extern void dump_stack(void) __cold;
 #endif
 
 /* If you are writing a driver, please use dev_dbg instead */
-#if defined(DEBUG)
-#define pr_debug(fmt, ...) \
-	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
-#elif defined(CONFIG_DYNAMIC_DEBUG)
+#if defined(CONFIG_DYNAMIC_DEBUG)
 /* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */
 #define pr_debug(fmt, ...) \
 	dynamic_pr_debug(fmt, ##__VA_ARGS__)
+#elif defined(DEBUG)
+#define pr_debug(fmt, ...) \
+	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
 #else
 #define pr_debug(fmt, ...) \
 	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
diff --git a/include/linux/sys_soc.h b/include/linux/sys_soc.h
new file mode 100644
index 00000000000..2739ccb6957
--- /dev/null
+++ b/include/linux/sys_soc.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2011
+ * Author: Lee Jones <lee.jones@linaro.org> for ST-Ericsson.
+ * License terms:  GNU General Public License (GPL), version 2
+ */
+#ifndef __SOC_BUS_H
+#define __SOC_BUS_H
+
+#include <linux/device.h>
+
+struct soc_device_attribute {
+	const char *machine;
+	const char *family;
+	const char *revision;
+	const char *soc_id;
+};
+
+/**
+ * soc_device_register - register SoC as a device
+ * @soc_plat_dev_attr: Attributes passed from platform to be attributed to a SoC
+ */
+struct soc_device *soc_device_register(
+	struct soc_device_attribute *soc_plat_dev_attr);
+
+/**
+ * soc_device_unregister - unregister SoC device
+ * @dev: SoC device to be unregistered
+ */
+void soc_device_unregister(struct soc_device *soc_dev);
+
+/**
+ * soc_device_to_device - helper function to fetch struct device
+ * @soc: Previously registered SoC device container
+ */
+struct device *soc_device_to_device(struct soc_device *soc);
+
+#endif /* __SOC_BUS_H */
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index fea790a2b17..13ef2338be4 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -170,7 +170,7 @@ static bool driver_filter(struct device *dev)
 		return false;
 
 	/* driver filter on but not yet initialized */
-	drv = get_driver(dev->driver);
+	drv = dev->driver;
 	if (!drv)
 		return false;
 
@@ -185,7 +185,6 @@ static bool driver_filter(struct device *dev)
 	}
 
 	read_unlock_irqrestore(&driver_name_lock, flags);
-	put_driver(drv);
 
 	return ret;
 }
diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index dcdade39e47..310c753cf83 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -60,6 +60,7 @@ struct ddebug_iter {
 static DEFINE_MUTEX(ddebug_lock);
 static LIST_HEAD(ddebug_tables);
 static int verbose = 0;
+module_param(verbose, int, 0644);
 
 /* Return the last part of a pathname */
 static inline const char *basename(const char *path)
@@ -68,12 +69,24 @@ static inline const char *basename(const char *path)
 	return tail ? tail+1 : path;
 }
 
+/* Return the path relative to source root */
+static inline const char *trim_prefix(const char *path)
+{
+	int skip = strlen(__FILE__) - strlen("lib/dynamic_debug.c");
+
+	if (strncmp(path, __FILE__, skip))
+		skip = 0; /* prefix mismatch, don't skip */
+
+	return path + skip;
+}
+
 static struct { unsigned flag:8; char opt_char; } opt_array[] = {
 	{ _DPRINTK_FLAGS_PRINT, 'p' },
 	{ _DPRINTK_FLAGS_INCL_MODNAME, 'm' },
 	{ _DPRINTK_FLAGS_INCL_FUNCNAME, 'f' },
 	{ _DPRINTK_FLAGS_INCL_LINENO, 'l' },
 	{ _DPRINTK_FLAGS_INCL_TID, 't' },
+	{ _DPRINTK_FLAGS_NONE, '_' },
 };
 
 /* format a string into buf[] which describes the _ddebug's flags */
@@ -83,58 +96,74 @@ static char *ddebug_describe_flags(struct _ddebug *dp, char *buf,
 	char *p = buf;
 	int i;
 
-	BUG_ON(maxlen < 4);
+	BUG_ON(maxlen < 6);
 	for (i = 0; i < ARRAY_SIZE(opt_array); ++i)
 		if (dp->flags & opt_array[i].flag)
 			*p++ = opt_array[i].opt_char;
 	if (p == buf)
-		*p++ = '-';
+		*p++ = '_';
 	*p = '\0';
 
 	return buf;
 }
 
+#define vpr_info_dq(q, msg)						\
+do {									\
+	if (verbose)							\
+		/* trim last char off format print */			\
+		pr_info("%s: func=\"%s\" file=\"%s\" "			\
+			"module=\"%s\" format=\"%.*s\" "		\
+			"lineno=%u-%u",					\
+			msg,						\
+			q->function ? q->function : "",			\
+			q->filename ? q->filename : "",			\
+			q->module ? q->module : "",			\
+			(int)(q->format ? strlen(q->format) - 1 : 0),	\
+			q->format ? q->format : "",			\
+			q->first_lineno, q->last_lineno);		\
+} while (0)
+
 /*
- * Search the tables for _ddebug's which match the given
- * `query' and apply the `flags' and `mask' to them.  Tells
- * the user which ddebug's were changed, or whether none
- * were matched.
+ * Search the tables for _ddebug's which match the given `query' and
+ * apply the `flags' and `mask' to them.  Returns number of matching
+ * callsites, normally the same as number of changes.  If verbose,
+ * logs the changes.  Takes ddebug_lock.
  */
-static void ddebug_change(const struct ddebug_query *query,
-			   unsigned int flags, unsigned int mask)
+static int ddebug_change(const struct ddebug_query *query,
+			unsigned int flags, unsigned int mask)
 {
 	int i;
 	struct ddebug_table *dt;
 	unsigned int newflags;
 	unsigned int nfound = 0;
-	char flagbuf[8];
+	char flagbuf[10];
 
 	/* search for matching ddebugs */
 	mutex_lock(&ddebug_lock);
 	list_for_each_entry(dt, &ddebug_tables, link) {
 
 		/* match against the module name */
-		if (query->module != NULL &&
-		    strcmp(query->module, dt->mod_name))
+		if (query->module && strcmp(query->module, dt->mod_name))
 			continue;
 
 		for (i = 0 ; i < dt->num_ddebugs ; i++) {
 			struct _ddebug *dp = &dt->ddebugs[i];
 
 			/* match against the source filename */
-			if (query->filename != NULL &&
+			if (query->filename &&
 			    strcmp(query->filename, dp->filename) &&
-			    strcmp(query->filename, basename(dp->filename)))
+			    strcmp(query->filename, basename(dp->filename)) &&
+			    strcmp(query->filename, trim_prefix(dp->filename)))
 				continue;
 
 			/* match against the function */
-			if (query->function != NULL &&
+			if (query->function &&
 			    strcmp(query->function, dp->function))
 				continue;
 
 			/* match against the format */
-			if (query->format != NULL &&
-			    strstr(dp->format, query->format) == NULL)
+			if (query->format &&
+			    !strstr(dp->format, query->format))
 				continue;
 
 			/* match against the line number range */
@@ -151,13 +180,9 @@ static void ddebug_change(const struct ddebug_query *query,
 			if (newflags == dp->flags)
 				continue;
 			dp->flags = newflags;
-			if (newflags)
-				dp->enabled = 1;
-			else
-				dp->enabled = 0;
 			if (verbose)
-				pr_info("changed %s:%d [%s]%s %s\n",
-					dp->filename, dp->lineno,
+				pr_info("changed %s:%d [%s]%s =%s\n",
+					trim_prefix(dp->filename), dp->lineno,
 					dt->mod_name, dp->function,
 					ddebug_describe_flags(dp, flagbuf,
 							sizeof(flagbuf)));
@@ -167,6 +192,8 @@ static void ddebug_change(const struct ddebug_query *query,
 
 	if (!nfound && verbose)
 		pr_info("no matches for query\n");
+
+	return nfound;
 }
 
 /*
@@ -186,8 +213,10 @@ static int ddebug_tokenize(char *buf, char *words[], int maxwords)
 		buf = skip_spaces(buf);
 		if (!*buf)
 			break;	/* oh, it was trailing whitespace */
+		if (*buf == '#')
+			break;	/* token starts comment, skip rest of line */
 
-		/* Run `end' over a word, either whitespace separated or quoted */
+		/* find `end' of word, whitespace separated or quoted */
 		if (*buf == '"' || *buf == '\'') {
 			int quote = *buf++;
 			for (end = buf ; *end && *end != quote ; end++)
@@ -199,8 +228,8 @@ static int ddebug_tokenize(char *buf, char *words[], int maxwords)
 				;
 			BUG_ON(end == buf);
 		}
-		/* Here `buf' is the start of the word, `end' is one past the end */
 
+		/* `buf' is start of word, `end' is one past its end */
 		if (nwords == maxwords)
 			return -EINVAL;	/* ran out of words[] before bytes */
 		if (*end)
@@ -279,6 +308,19 @@ static char *unescape(char *str)
 	return str;
 }
 
+static int check_set(const char **dest, char *src, char *name)
+{
+	int rc = 0;
+
+	if (*dest) {
+		rc = -EINVAL;
+		pr_err("match-spec:%s val:%s overridden by %s",
+			name, *dest, src);
+	}
+	*dest = src;
+	return rc;
+}
+
 /*
  * Parse words[] as a ddebug query specification, which is a series
  * of (keyword, value) pairs chosen from these possibilities:
@@ -290,11 +332,15 @@ static char *unescape(char *str)
  * format <escaped-string-to-find-in-format>
  * line <lineno>
  * line <first-lineno>-<last-lineno> // where either may be empty
+ *
+ * Only 1 of each type is allowed.
+ * Returns 0 on success, <0 on error.
  */
 static int ddebug_parse_query(char *words[], int nwords,
 			       struct ddebug_query *query)
 {
 	unsigned int i;
+	int rc;
 
 	/* check we have an even number of words */
 	if (nwords % 2 != 0)
@@ -303,41 +349,43 @@ static int ddebug_parse_query(char *words[], int nwords,
 
 	for (i = 0 ; i < nwords ; i += 2) {
 		if (!strcmp(words[i], "func"))
-			query->function = words[i+1];
+			rc = check_set(&query->function, words[i+1], "func");
 		else if (!strcmp(words[i], "file"))
-			query->filename = words[i+1];
+			rc = check_set(&query->filename, words[i+1], "file");
 		else if (!strcmp(words[i], "module"))
-			query->module = words[i+1];
+			rc = check_set(&query->module, words[i+1], "module");
 		else if (!strcmp(words[i], "format"))
-			query->format = unescape(words[i+1]);
+			rc = check_set(&query->format, unescape(words[i+1]),
+				"format");
 		else if (!strcmp(words[i], "line")) {
 			char *first = words[i+1];
 			char *last = strchr(first, '-');
+			if (query->first_lineno || query->last_lineno) {
+				pr_err("match-spec:line given 2 times\n");
+				return -EINVAL;
+			}
 			if (last)
 				*last++ = '\0';
 			if (parse_lineno(first, &query->first_lineno) < 0)
 				return -EINVAL;
-			if (last != NULL) {
+			if (last) {
 				/* range <first>-<last> */
-				if (parse_lineno(last, &query->last_lineno) < 0)
+				if (parse_lineno(last, &query->last_lineno)
+				    < query->first_lineno) {
+					pr_err("last-line < 1st-line\n");
 					return -EINVAL;
+				}
 			} else {
 				query->last_lineno = query->first_lineno;
 			}
 		} else {
-			if (verbose)
-				pr_err("unknown keyword \"%s\"\n", words[i]);
+			pr_err("unknown keyword \"%s\"\n", words[i]);
 			return -EINVAL;
 		}
+		if (rc)
+			return rc;
 	}
-
-	if (verbose)
-		pr_info("q->function=\"%s\" q->filename=\"%s\" "
-			"q->module=\"%s\" q->format=\"%s\" q->lineno=%u-%u\n",
-			query->function, query->filename,
-			query->module, query->format, query->first_lineno,
-			query->last_lineno);
-
+	vpr_info_dq(query, "parsed");
 	return 0;
 }
 
@@ -375,8 +423,6 @@ static int ddebug_parse_flags(const char *str, unsigned int *flagsp,
 		if (i < 0)
 			return -EINVAL;
 	}
-	if (flags == 0)
-		return -EINVAL;
 	if (verbose)
 		pr_info("flags=0x%x\n", flags);
 
@@ -405,7 +451,7 @@ static int ddebug_exec_query(char *query_string)
 	unsigned int flags = 0, mask = 0;
 	struct ddebug_query query;
 #define MAXWORDS 9
-	int nwords;
+	int nwords, nfound;
 	char *words[MAXWORDS];
 
 	nwords = ddebug_tokenize(query_string, words, MAXWORDS);
@@ -417,8 +463,47 @@ static int ddebug_exec_query(char *query_string)
 		return -EINVAL;
 
 	/* actually go and implement the change */
-	ddebug_change(&query, flags, mask);
-	return 0;
+	nfound = ddebug_change(&query, flags, mask);
+	vpr_info_dq((&query), (nfound) ? "applied" : "no-match");
+
+	return nfound;
+}
+
+/* handle multiple queries in query string, continue on error, return
+   last error or number of matching callsites.  Module name is either
+   in param (for boot arg) or perhaps in query string.
+*/
+static int ddebug_exec_queries(char *query)
+{
+	char *split;
+	int i, errs = 0, exitcode = 0, rc, nfound = 0;
+
+	for (i = 0; query; query = split) {
+		split = strpbrk(query, ";\n");
+		if (split)
+			*split++ = '\0';
+
+		query = skip_spaces(query);
+		if (!query || !*query || *query == '#')
+			continue;
+
+		if (verbose)
+			pr_info("query %d: \"%s\"\n", i, query);
+
+		rc = ddebug_exec_query(query);
+		if (rc < 0) {
+			errs++;
+			exitcode = rc;
+		} else
+			nfound += rc;
+		i++;
+	}
+	pr_info("processed %d queries, with %d matches, %d errs\n",
+		 i, nfound, errs);
+
+	if (exitcode)
+		return exitcode;
+	return nfound;
 }
 
 #define PREFIX_SIZE 64
@@ -452,7 +537,8 @@ static char *dynamic_emit_prefix(const struct _ddebug *desc, char *buf)
 		pos += snprintf(buf + pos, remaining(pos), "%s:",
 					desc->function);
 	if (desc->flags & _DPRINTK_FLAGS_INCL_LINENO)
-		pos += snprintf(buf + pos, remaining(pos), "%d:", desc->lineno);
+		pos += snprintf(buf + pos, remaining(pos), "%d:",
+					desc->lineno);
 	if (pos - pos_after_tid)
 		pos += snprintf(buf + pos, remaining(pos), " ");
 	if (pos >= PREFIX_SIZE)
@@ -527,14 +613,16 @@ EXPORT_SYMBOL(__dynamic_netdev_dbg);
 
 #endif
 
-static __initdata char ddebug_setup_string[1024];
+#define DDEBUG_STRING_SIZE 1024
+static __initdata char ddebug_setup_string[DDEBUG_STRING_SIZE];
+
 static __init int ddebug_setup_query(char *str)
 {
-	if (strlen(str) >= 1024) {
+	if (strlen(str) >= DDEBUG_STRING_SIZE) {
 		pr_warn("ddebug boot param string too large\n");
 		return 0;
 	}
-	strcpy(ddebug_setup_string, str);
+	strlcpy(ddebug_setup_string, str, DDEBUG_STRING_SIZE);
 	return 1;
 }
 
@@ -544,25 +632,33 @@ __setup("ddebug_query=", ddebug_setup_query);
  * File_ops->write method for <debugfs>/dynamic_debug/conrol.  Gathers the
  * command text from userspace, parses and executes it.
  */
+#define USER_BUF_PAGE 4096
 static ssize_t ddebug_proc_write(struct file *file, const char __user *ubuf,
 				  size_t len, loff_t *offp)
 {
-	char tmpbuf[256];
+	char *tmpbuf;
 	int ret;
 
 	if (len == 0)
 		return 0;
-	/* we don't check *offp -- multiple writes() are allowed */
-	if (len > sizeof(tmpbuf)-1)
+	if (len > USER_BUF_PAGE - 1) {
+		pr_warn("expected <%d bytes into control\n", USER_BUF_PAGE);
 		return -E2BIG;
-	if (copy_from_user(tmpbuf, ubuf, len))
+	}
+	tmpbuf = kmalloc(len + 1, GFP_KERNEL);
+	if (!tmpbuf)
+		return -ENOMEM;
+	if (copy_from_user(tmpbuf, ubuf, len)) {
+		kfree(tmpbuf);
 		return -EFAULT;
+	}
 	tmpbuf[len] = '\0';
 	if (verbose)
 		pr_info("read %d bytes from userspace\n", (int)len);
 
-	ret = ddebug_exec_query(tmpbuf);
-	if (ret)
+	ret = ddebug_exec_queries(tmpbuf);
+	kfree(tmpbuf);
+	if (ret < 0)
 		return ret;
 
 	*offp += len;
@@ -668,7 +764,7 @@ static int ddebug_proc_show(struct seq_file *m, void *p)
 {
 	struct ddebug_iter *iter = m->private;
 	struct _ddebug *dp = p;
-	char flagsbuf[8];
+	char flagsbuf[10];
 
 	if (verbose)
 		pr_info("called m=%p p=%p\n", m, p);
@@ -679,10 +775,10 @@ static int ddebug_proc_show(struct seq_file *m, void *p)
 		return 0;
 	}
 
-	seq_printf(m, "%s:%u [%s]%s %s \"",
-		   dp->filename, dp->lineno,
-		   iter->table->mod_name, dp->function,
-		   ddebug_describe_flags(dp, flagsbuf, sizeof(flagsbuf)));
+	seq_printf(m, "%s:%u [%s]%s =%s \"",
+		trim_prefix(dp->filename), dp->lineno,
+		iter->table->mod_name, dp->function,
+		ddebug_describe_flags(dp, flagsbuf, sizeof(flagsbuf)));
 	seq_escape(m, dp->format, "\t\r\n\"");
 	seq_puts(m, "\"\n");
 
@@ -708,10 +804,11 @@ static const struct seq_operations ddebug_proc_seqops = {
 };
 
 /*
- * File_ops->open method for <debugfs>/dynamic_debug/control.  Does the seq_file
- * setup dance, and also creates an iterator to walk the _ddebugs.
- * Note that we create a seq_file always, even for O_WRONLY files
- * where it's not needed, as doing so simplifies the ->release method.
+ * File_ops->open method for <debugfs>/dynamic_debug/control.  Does
+ * the seq_file setup dance, and also creates an iterator to walk the
+ * _ddebugs.  Note that we create a seq_file always, even for O_WRONLY
+ * files where it's not needed, as doing so simplifies the ->release
+ * method.
  */
 static int ddebug_proc_open(struct inode *inode, struct file *file)
 {
@@ -846,33 +943,40 @@ static int __init dynamic_debug_init(void)
 	int ret = 0;
 	int n = 0;
 
-	if (__start___verbose != __stop___verbose) {
-		iter = __start___verbose;
-		modname = iter->modname;
-		iter_start = iter;
-		for (; iter < __stop___verbose; iter++) {
-			if (strcmp(modname, iter->modname)) {
-				ret = ddebug_add_module(iter_start, n, modname);
-				if (ret)
-					goto out_free;
-				n = 0;
-				modname = iter->modname;
-				iter_start = iter;
-			}
-			n++;
+	if (__start___verbose == __stop___verbose) {
+		pr_warn("_ddebug table is empty in a "
+			"CONFIG_DYNAMIC_DEBUG build");
+		return 1;
+	}
+	iter = __start___verbose;
+	modname = iter->modname;
+	iter_start = iter;
+	for (; iter < __stop___verbose; iter++) {
+		if (strcmp(modname, iter->modname)) {
+			ret = ddebug_add_module(iter_start, n, modname);
+			if (ret)
+				goto out_free;
+			n = 0;
+			modname = iter->modname;
+			iter_start = iter;
 		}
-		ret = ddebug_add_module(iter_start, n, modname);
+		n++;
 	}
+	ret = ddebug_add_module(iter_start, n, modname);
+	if (ret)
+		goto out_free;
 
 	/* ddebug_query boot param got passed -> set it up */
 	if (ddebug_setup_string[0] != '\0') {
-		ret = ddebug_exec_query(ddebug_setup_string);
-		if (ret)
+		ret = ddebug_exec_queries(ddebug_setup_string);
+		if (ret < 0)
 			pr_warn("Invalid ddebug boot param %s",
 				ddebug_setup_string);
 		else
-			pr_info("ddebug initialized with string %s",
-				ddebug_setup_string);
+			pr_info("%d changes by ddebug_query\n", ret);
+
+		/* keep tables even on ddebug_query parse error */
+		ret = 0;
 	}
 
 out_free:
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index b89efe6e4c8..71839eb3375 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -1029,6 +1029,30 @@ static int do_amba_entry(const char *filename,
 }
 ADD_TO_DEVTABLE("amba", struct amba_id, do_amba_entry);
 
+/* LOOKS like x86cpu:vendor:VVVV:family:FFFF:model:MMMM:feature:*,FEAT,*
+ * All fields are numbers. It would be nicer to use strings for vendor
+ * and feature, but getting those out of the build system here is too
+ * complicated.
+ */
+
+static int do_x86cpu_entry(const char *filename, struct x86_cpu_id *id,
+			   char *alias)
+{
+	id->feature = TO_NATIVE(id->feature);
+	id->family = TO_NATIVE(id->family);
+	id->model = TO_NATIVE(id->model);
+	id->vendor = TO_NATIVE(id->vendor);
+
+	strcpy(alias, "x86cpu:");
+	ADD(alias, "vendor:",  id->vendor != X86_VENDOR_ANY, id->vendor);
+	ADD(alias, ":family:", id->family != X86_FAMILY_ANY, id->family);
+	ADD(alias, ":model:",  id->model  != X86_MODEL_ANY,  id->model);
+	ADD(alias, ":feature:*,", id->feature != X86_FEATURE_ANY, id->feature);
+	strcat(alias, ",*");
+	return 1;
+}
+ADD_TO_DEVTABLE("x86cpu", struct x86_cpu_id, do_x86cpu_entry);
+
 /* Does namelen bytes of name exactly match the symbol? */
 static bool sym_is(const char *name, unsigned namelen, const char *symbol)
 {
diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index 11224eddcdc..4ebf7038058 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -34,21 +34,12 @@
 #include <errno.h>
 #include <arpa/inet.h>
 #include <linux/connector.h>
+#include <linux/hyperv.h>
 #include <linux/netlink.h>
 #include <ifaddrs.h>
 #include <netdb.h>
 #include <syslog.h>
 
-/*
- * KYS: TODO. Need to register these in the kernel.
- *
- * The following definitions are shared with the in-kernel component; do not
- * change any of this without making the corresponding changes in
- * the KVP kernel component.
- */
-#define CN_KVP_IDX		0x9     /* MSFT KVP functionality */
-#define CN_KVP_VAL		0x1 /* This supports queries from the kernel */
-#define CN_KVP_USER_VAL		0x2 /* This supports queries from the user  */
 
 /*
  * KVP protocol: The user mode component first registers with the
@@ -60,25 +51,8 @@
  * We use this infrastructure for also supporting queries from user mode
  * application for state that may be maintained in the KVP kernel component.
  *
- * XXXKYS: Have a shared header file between the user and kernel (TODO)
  */
 
-enum kvp_op {
-	KVP_REGISTER = 0, /* Register the user mode component*/
-	KVP_KERNEL_GET, /*Kernel is requesting the value for the specified key*/
-	KVP_KERNEL_SET, /*Kernel is providing the value for the specified key*/
-	KVP_USER_GET, /*User is requesting the value for the specified key*/
-	KVP_USER_SET /*User is providing the value for the specified key*/
-};
-
-#define HV_KVP_EXCHANGE_MAX_KEY_SIZE	512
-#define HV_KVP_EXCHANGE_MAX_VALUE_SIZE	2048
-
-struct hv_ku_msg {
-	__u32	kvp_index;
-	__u8  kvp_key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; /* Key name */
-	__u8  kvp_value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; /* Key  value */
-};
 
 enum key_index {
 	FullyQualifiedDomainName = 0,
@@ -93,10 +67,6 @@ enum key_index {
 	ProcessorArchitecture
 };
 
-/*
- * End of shared definitions.
- */
-
 static char kvp_send_buffer[4096];
 static char kvp_recv_buffer[4096];
 static struct sockaddr_nl addr;
@@ -332,7 +302,7 @@ int main(void)
 	struct pollfd pfd;
 	struct nlmsghdr *incoming_msg;
 	struct cn_msg	*incoming_cn_msg;
-	struct hv_ku_msg *hv_msg;
+	struct hv_kvp_msg *hv_msg;
 	char	*p;
 	char	*key_value;
 	char	*key_name;
@@ -370,9 +340,11 @@ int main(void)
 	message = (struct cn_msg *)kvp_send_buffer;
 	message->id.idx = CN_KVP_IDX;
 	message->id.val = CN_KVP_VAL;
-	message->seq = KVP_REGISTER;
+
+	hv_msg = (struct hv_kvp_msg *)message->data;
+	hv_msg->kvp_hdr.operation = KVP_OP_REGISTER;
 	message->ack = 0;
-	message->len = 0;
+	message->len = sizeof(struct hv_kvp_msg);
 
 	len = netlink_send(fd, message);
 	if (len < 0) {
@@ -398,14 +370,15 @@ int main(void)
 
 		incoming_msg = (struct nlmsghdr *)kvp_recv_buffer;
 		incoming_cn_msg = (struct cn_msg *)NLMSG_DATA(incoming_msg);
+		hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data;
 
-		switch (incoming_cn_msg->seq) {
-		case KVP_REGISTER:
+		switch (hv_msg->kvp_hdr.operation) {
+		case KVP_OP_REGISTER:
 			/*
 			 * Driver is registering with us; stash away the version
 			 * information.
 			 */
-			p = (char *)incoming_cn_msg->data;
+			p = (char *)hv_msg->body.kvp_version;
 			lic_version = malloc(strlen(p) + 1);
 			if (lic_version) {
 				strcpy(lic_version, p);
@@ -416,17 +389,15 @@ int main(void)
 			}
 			continue;
 
-		case KVP_KERNEL_GET:
-			break;
 		default:
-			continue;
+			break;
 		}
 
-		hv_msg = (struct hv_ku_msg *)incoming_cn_msg->data;
-		key_name = (char *)hv_msg->kvp_key;
-		key_value = (char *)hv_msg->kvp_value;
+		hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data;
+		key_name = (char *)hv_msg->body.kvp_enum_data.data.key;
+		key_value = (char *)hv_msg->body.kvp_enum_data.data.value;
 
-		switch (hv_msg->kvp_index) {
+		switch (hv_msg->body.kvp_enum_data.index) {
 		case FullyQualifiedDomainName:
 			kvp_get_domain_name(key_value,
 					HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
@@ -486,9 +457,8 @@ int main(void)
 
 		incoming_cn_msg->id.idx = CN_KVP_IDX;
 		incoming_cn_msg->id.val = CN_KVP_VAL;
-		incoming_cn_msg->seq = KVP_USER_SET;
 		incoming_cn_msg->ack = 0;
-		incoming_cn_msg->len = sizeof(struct hv_ku_msg);
+		incoming_cn_msg->len = sizeof(struct hv_kvp_msg);
 
 		len = netlink_send(fd, incoming_cn_msg);
 		if (len < 0) {