diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-27 16:47:35 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-27 16:47:35 -0700 |
commit | 66f03c614c0902ccf7d6160459362a9352f33271 (patch) | |
tree | b9a8864efe5aa7fc5c96cc5ccbeca41f5cd6f6a7 /drivers/tty/serial/pxa.c | |
parent | 34800598b2eebe061445216473b1e4c2ff5cba99 (diff) | |
parent | cdc3df6f44f72c5924a16a47e1663c3fb0e57820 (diff) | |
download | linux-3.10-66f03c614c0902ccf7d6160459362a9352f33271.tar.gz linux-3.10-66f03c614c0902ccf7d6160459362a9352f33271.tar.bz2 linux-3.10-66f03c614c0902ccf7d6160459362a9352f33271.zip |
Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull "ARM: device tree work" from Arnd Bergmann:
"Most of these patches convert code from using static platform data to
describing the hardware in the device tree. This is only the first
half of the changes for v3.4 because a lot of patches for this topic
came in the last week before the merge window.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>"
Fix up trivial conflicts in arch/arm/mach-vexpress/{Kconfig,core.h}
* tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (86 commits)
Document: devicetree: add OF documents for arch-mmp
ARM: dts: append DTS file of pxa168
ARM: mmp: append OF support on pxa168
ARM: mmp: enable rtc clk in pxa168
i2c: pxa: add OF support
serial: pxa: add OF support
arm/dts: mt_ventoux: very basic support for TeeJet Mt.Ventoux board
ARM: OMAP2+: Remove extra ifdefs for board-generic
ARM: OMAP2+: Fix build error when only ARCH_OMAP2/3 or 4 is selected
ASoC: DT: Add digital microphone binding to PAZ00 board.
ARM: dt: Add ARM PMU to tegra*.dtsi
ARM: at91: at91sam9x5cm/dt: add leds support
ARM: at91: usb_a9g20/dt: add gpio-keys support
ARM: at91: at91sam9m10g45ek/dt: add gpio-keys support
ARM: at91: at91sam9m10g45ek/dt: add leds support
ARM: at91: usb_a9g20/dt: add leds support
ARM: at91/pio: add new PIO3 features
ARM: at91: add sam9_smc.o to at91sam9x5 build
ARM: at91/tc/clocksource: Add 32 bit variant to Timer Counter
ARM: at91/tc: add device tree support to atmel_tclib
...
Diffstat (limited to 'drivers/tty/serial/pxa.c')
-rw-r--r-- | drivers/tty/serial/pxa.c | 49 |
1 files changed, 37 insertions, 12 deletions
diff --git a/drivers/tty/serial/pxa.c b/drivers/tty/serial/pxa.c index e2fd3d8e0ab..5847a4b855f 100644 --- a/drivers/tty/serial/pxa.c +++ b/drivers/tty/serial/pxa.c @@ -36,6 +36,7 @@ #include <linux/circ_buf.h> #include <linux/delay.h> #include <linux/interrupt.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/tty.h> #include <linux/tty_flip.h> @@ -44,6 +45,8 @@ #include <linux/io.h> #include <linux/slab.h> +#define PXA_NAME_LEN 8 + struct uart_pxa_port { struct uart_port port; unsigned char ier; @@ -51,7 +54,7 @@ struct uart_pxa_port { unsigned char mcr; unsigned int lsr_break_flag; struct clk *clk; - char *name; + char name[PXA_NAME_LEN]; }; static inline unsigned int serial_in(struct uart_pxa_port *up, int offset) @@ -781,6 +784,31 @@ static const struct dev_pm_ops serial_pxa_pm_ops = { }; #endif +static struct of_device_id serial_pxa_dt_ids[] = { + { .compatible = "mrvl,pxa-uart", }, + { .compatible = "mrvl,mmp-uart", }, + {} +}; +MODULE_DEVICE_TABLE(of, serial_pxa_dt_ids); + +static int serial_pxa_probe_dt(struct platform_device *pdev, + struct uart_pxa_port *sport) +{ + struct device_node *np = pdev->dev.of_node; + int ret; + + if (!np) + return 1; + + ret = of_alias_get_id(np, "serial"); + if (ret < 0) { + dev_err(&pdev->dev, "failed to get alias id, errno %d\n", ret); + return ret; + } + sport->port.line = ret; + return 0; +} + static int serial_pxa_probe(struct platform_device *dev) { struct uart_pxa_port *sport; @@ -808,20 +836,16 @@ static int serial_pxa_probe(struct platform_device *dev) sport->port.irq = irqres->start; sport->port.fifosize = 64; sport->port.ops = &serial_pxa_pops; - sport->port.line = dev->id; sport->port.dev = &dev->dev; sport->port.flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF; sport->port.uartclk = clk_get_rate(sport->clk); - switch (dev->id) { - case 0: sport->name = "FFUART"; break; - case 1: sport->name = "BTUART"; break; - case 2: sport->name = "STUART"; break; - case 3: sport->name = "HWUART"; break; - default: - sport->name = "???"; - break; - } + ret = serial_pxa_probe_dt(dev, sport); + if (ret > 0) + sport->port.line = dev->id; + else if (ret < 0) + goto err_clk; + snprintf(sport->name, PXA_NAME_LEN - 1, "UART%d", sport->port.line + 1); sport->port.membase = ioremap(mmres->start, resource_size(mmres)); if (!sport->port.membase) { @@ -829,7 +853,7 @@ static int serial_pxa_probe(struct platform_device *dev) goto err_clk; } - serial_pxa_ports[dev->id] = sport; + serial_pxa_ports[sport->port.line] = sport; uart_add_one_port(&serial_pxa_reg, &sport->port); platform_set_drvdata(dev, sport); @@ -866,6 +890,7 @@ static struct platform_driver serial_pxa_driver = { #ifdef CONFIG_PM .pm = &serial_pxa_pm_ops, #endif + .of_match_table = serial_pxa_dt_ids, }, }; |