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2011-03-21i2c-pxa2xx: use dynamic register layoutSebastian Andrzej Siewior1-20/+50
This will prepare the driver to handle register layouts where certain registers are not available at all. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-03-20i2c-mxs: set controller to pio queue mode after resetSascha Hauer1-2/+2
mxs_reset_block() clears the PIO_QUEUE_MODE bit. So we have to set it again after a controller reset. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-03-20Merge branch 'for-2639/i2c/i2c-u2c12' into for-linus/2639/i2c-12Ben Dooks3-0/+546
2011-03-20i2c-i801: SMBus patch for Intel DH89xxCC DeviceIDsSeth Heasley2-2/+5
Add the SMBus Controller DeviceIDs for the Intel DH89xxCC PCH. Signed-off-by: Seth Heasley <seth.heasley@intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-03-20i2c: Deprecate i2c_driver.attach_adapter and .detach_adapterJean Delvare2-0/+5
The last legitimate user of i2c_driver.attach_adapter and .detach_adapter is gone, so we can finally deprecate these callbacks. The last few drivers which still use these will have to be updated to make use of standard I2C device instantiation ways instead. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-03-20i2c-dev: Use standard bus notification mechanismJean Delvare1-21/+39
Use the standard driver core mechanism to keep track of i2c adapters present on the system: i2c_for_each_dev and a notifier. This will let us deprecate and ultimately remove the legacy attach_adapter and detach_adapter callbacks in i2c_driver. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-03-20i2c: Export i2c_for_each_devJean Delvare1-6/+14
Introduce i2c_for_each_dev(), an i2c device iterator with proper locking for use by i2c-dev. This is needed so that we can get rid of the attach_adapter and detach_adapter legacy callback functions. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-03-20i2c: make i2c_get_adapter prototype clearerJean Delvare1-2/+2
Rename the parameter of i2c_get_adapter() to "nr", to make it clear we are passing an adapter number and not an adapter ID (which have gone away by now.) Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-03-20i2c-boardinfo: Fix typo in commentWolfram Sang1-1/+1
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-03-17Merge branch 'for-linus/2639/i2c-1' of git://git.fluff.org/bjdooks/linuxLinus Torvalds4-1/+1132
* 'for-linus/2639/i2c-1' of git://git.fluff.org/bjdooks/linux: i2c-mpc: Add support for 64bit system i2c: add driver for Freescale i.MX28 i2c: tegra: Add i2c support
2011-03-17Merge branch 'for_linus' of ↵Linus Torvalds3-0/+318
git://git.kernel.org/pub/scm/linux/kernel/git/epip/linux-2.6-unicore32 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/epip/linux-2.6-unicore32: (40 commits) unicore32: rewrite arch-specific tlb.h to use asm-generic version unicore32: modify io_p2v and io_v2p macros, and adjust PKUNITY_mmio_BASEs unicore32: replace unicore32-specific iomap functions with generic lib implementation unicore32 machine related: add frame buffer driver for pkunity-v3 soc unicore32 machine related files: add i2c bus drivers for pkunity-v3 soc unicore32 io: redefine __REG(x) and re-use readl/writel funcs unicore32 i8042 upgrade and bugfix: adjust resource request region type unicore32 upgrade to v2.6.38-rc5: add one more paramter for pte_alloc_map call unicore32 i8042: adjust io funcs of i8042-unicore32io.h unicore32: rename PKUNITY_IOSPACE_BASE to PKUNITY_MMIO_BASE unicore32: modify function names and parameters for irq_chips unicore32: remove unused lines in arch/unicore32/include/asm/irq.h unicore32 time.c: change calculate method for clock_event_device unicore32: ADD MAINTAINER for unicore32 architecture unicore32 machine related files: ps2 driver unicore32 machine related files: pci bus handling unicore32 machine related files: hardware registers unicore32 machine related files: core files unicore32 additional architecture files: boot process unicore32 additional architecture files: low-level lib: misc ... Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-03-17unicore32 machine related files: add i2c bus drivers for pkunity-v3 socGuanXuetao3-0/+318
change from original version -- by advice of Jean Delvare 1. remove global variable i2c_reg, replaced by local variables 2. replace ENXIO with ENODEV when no platform resources 3. add adapter->nr assignment before i2c_add_numbered_adapter() call 4. add judgement for i2c_del_adapter() return value 5. release adapter when driver removed 6. add __devexit for puv3_i2c_remove() function 7. modify several names to more appropriated ones Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-03-16Merge branch 'devicetree/next' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds3-23/+17
* 'devicetree/next' of git://git.secretlab.ca/git/linux-2.6: (21 commits) tty: serial: altera_jtaguart: Add device tree support tty: serial: altera_uart: Add devicetree support dt: eliminate of_platform_driver shim code dt: Eliminate of_platform_{,un}register_driver dt/serial: Eliminate users of of_platform_{,un}register_driver dt/usb: Eliminate users of of_platform_{,un}register_driver dt/video: Eliminate users of of_platform_{,un}register_driver dt/net: Eliminate users of of_platform_{,un}register_driver dt/sound: Eliminate users of of_platform_{,un}register_driver dt/spi: Eliminate users of of_platform_{,un}register_driver dt: uartlite: merge platform and of_platform driver bindings dt: xilinx_hwicap: merge platform and of_platform driver bindings ipmi: convert OF driver to platform driver leds/leds-gpio: merge platform_driver with of_platform_driver dt/sparc: Eliminate users of of_platform_{,un}register_driver dt/powerpc: Eliminate users of of_platform_{,un}register_driver dt/powerpc: move of_bus_type infrastructure to ibmebus drivercore/dt: add a match table pointer to struct device dt: Typo fix. altera_ps2: Add devicetree support ...
2011-03-16Merge branches 'for-2639/i2c/i2c-tegra', 'for-2639/i2c/i2c-mpc' and ↵Ben Dooks7-7/+462
'for-2639/i2c/i2c-imx' into for-linus/2639/i2c-1
2011-03-15Merge branch 'x86-platform-for-linus' of ↵Linus Torvalds2-13/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (27 commits) x86: Clean up apic.c and apic.h x86: Remove superflous goal definition of tsc_sync x86: dt: Correct local apic documentation in device tree bindings x86: dt: Cleanup local apic setup x86: dt: Fix OLPC=y/INTEL_CE=n build rtc: cmos: Add OF bindings x86: ce4100: Use OF to setup devices x86: ioapic: Add OF bindings for IO_APIC x86: dtb: Add generic bus probe x86: dtb: Add support for PCI devices backed by dtb nodes x86: dtb: Add device tree support for HPET x86: dtb: Add early parsing of IO_APIC x86: dtb: Add irq domain abstraction x86: dtb: Add a device tree for CE4100 x86: Add device tree support x86: e820: Remove conditional early mapping in parse_e820_ext x86: OLPC: Make OLPC=n build again x86: OLPC: Remove extra OLPC_OPENFIRMWARE_DT indirection x86: OLPC: Cleanup config maze completely x86: OLPC: Hide OLPC_OPENFIRMWARE config switch ... Fix up conflicts in arch/x86/platform/ce4100/ce4100.c
2011-03-16i2c-mpc: Add support for 64bit systemKumar Gala1-1/+1
Currently i2c-mpc supports 32bit system only, this modification makes it supported on both 32-bit and 64-bit systems. The P5020 is the first 64-bit PPC system with the i2c-mpc controller. Based in patch from Xulei <B33228@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-03-08i2c-eg20t: include slab.h for memory allocationsWolfram Sang1-0/+1
Fixes (with v2.6.38-rc3/parisc/parisc-allmodconfig): src/drivers/i2c/busses/i2c-eg20t.c:720: error: implicit declaration of function 'kzalloc' src/drivers/i2c/busses/i2c-eg20t.c:790: error: implicit declaration of function 'kfree' Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-03-08i2c-ocores: Fix pointer type mismatch errorGrant Likely1-1/+1
ocores_i2c_of_probe needs to use a const __be32 type for handing device tree property values. This patch fixed the following build warning: CC drivers/i2c/busses/i2c-ocores.o drivers/i2c/busses/i2c-ocores.c: In function 'ocores_i2c_of_probe': drivers/i2c/busses/i2c-ocores.c:254: warning: assignment discards qualifiers from pointer target type drivers/i2c/busses/i2c-ocores.c:261: warning: assignment discards qualifiers from pointer target type Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Peter Korsgaard <jacmet@sunsite.dk> Cc: Ben Dooks <ben-linux@fluff.org> Cc: linux-i2c@vger.kernel.org Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-03-07i2c-omap: Program I2C_WE on OMAP4 to enable i2c wakeupRajendra Nayak1-3/+1
For the I2C module to be wakeup capable, programming I2C_WE register (which was skipped for OMAP4430) is needed even on OMAP4. This fixes i2c controller timeouts which were seen recently with the static dependency being cleared between MPU and L4PER clockdomains. Signed-off-by: Rajendra Nayak <rnayak@ti.com> [ben-linux@fluff.org: re-flowed description] Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-03-02i2c-eg20t: support new device OKI SEMICONDUCTOR ML7213 IOHTomoya MORINAGA2-68/+108
Support new device OKI SEMICONDUCTOR ML7213 IOH. The ML7213 which is for IVI(In-Vehicle Infotainment) is a companion chip for the Atom E6xx series and compatible with the Intel EG20T PCH. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-02-28dt: Eliminate of_platform_{,un}register_driverGrant Likely3-23/+17
Final step to eliminate of_platform_bus_type. They're all just platform drivers now. v2: fix type in pasemi_nand.c (thanks to Stephen Rothwell) Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-02-23i2c: add driver for Freescale i.MX28Wolfram Sang3-0/+423
Currently only supporting the PIOQUEUE-mode, because DMA-support for this platform is not yet in mainline. When it becomes available and support has been added to this driver, it will also be suitable for i.MX23 and STMP3xxx. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Shawn Guo <shawn.guo@freescale.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-02-23i2c: tegra: Add i2c supportColin Cross3-0/+708
Adds I2C bus driver for nVidia Tegra SoCs. Tegra includes 4 I2C controllers, one of which is inside the Dynamic Voltage Controller and has a slightly different register map. Signed-off-by: Colin Cross <ccross@android.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-02-23i2c-omap: fixup commit cb527ede1bf6ff2008a025606f25344b8ed7b4ac whitespaceBen Dooks1-2/+2
Fixup the whitespace error noticed in cb527ede1bf6ff2008a025606f25344b8ed7b4ac Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-02-23i2c-omap: Double clear of ARDY status in IRQ handlerRichard woodruff1-1/+5
This errata occurs when the ARDY interrupt generation is enabled. At the begining of every new transaction the ARDY interrupt is cleared. On continuous i2c transactions where after clearing the ARDY bit from I2C_STAT register (clearing the interrupt), the IRQ line is reasserted and the I2C_STAT[ARDY] bit set again on 1. In fact, the ARDY status bit is not cleared at the write access to I2C_STAT[ARDY] and only the IRQ line is deasserted and then reasserted. This is not captured in the usual errata documents. The workaround is to have a double clear of ARDY status in irq handler. Signed-off-by: Richard woodruff <r-woodruff2@ti.com> Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-02-23i2c-omap: fix build for !CONFIG_SUSPENDBalaji T K1-2/+3
fix the build break when !CONFIG_SUSPEND drivers/i2c/busses/i2c-omap.c:1173: error: lvalue required as unary '&' operand make[3]: *** [drivers/i2c/busses/i2c-omap.o] Error 1 make[2]: *** [drivers/i2c/busses] Error 2 make[1]: *** [drivers/i2c] Error 2 make: *** [drivers] Error 2 Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-02-22i2c-omap: fix static suspend vs. runtime suspendKevin Hilman1-0/+28
When runtime PM is enabled, each OMAP i2c device is suspended after each i2c xfer. However, there are two cases when the static suspend methods must be used to ensure the devices are suspended: 1) runtime PM is disabled, either at compile time or dynamically via /sys/devices/.../power/control. 2) an i2c client driver uses i2c during it's suspend callback, thus leaving the i2c driver active (NOTE: runtime suspend transitions are disabled during system suspend, so i2c activity during system suspend will runtime resume the device, but not runtime (re)suspend it.) Since the actual work to suspend the device is handled by the subsytem, call the bus methods to take care of it. NOTE: This takes care of a known suspend problem on OMAP3 where the TWL RTC driver does i2c xfers during its suspend path leaving the i2c driver in an active state (since runtime suspend transistions are disabled.) Signed-off-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-02-22i2c-stu300: make sure adapter-name is terminatedWolfram Sang1-1/+1
Use strlcpy instead of strncpy. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Linus Walleij <linus.walleij@stericsson.com> Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-01-27i2c/busses: Add support for Diolan U2C-12 USB-I2C adapterGuenter Roeck3-0/+546
This patch adds support for the Diolan U2C-12 USB-I2C adapter. It also updates MAINTAINERS to list the author as maintainer. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-01-21driver-core: remove conditionals around devicetree pointersGrant Likely2-13/+3
Having conditional around the of_match_table and the of_node pointers turns out to make driver code use ugly #ifdef blocks. Drop the conditionals and remove the #ifdef blocks from the affected drivers. Also tidy up minor whitespace issues within the same hunks. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-01-14i2c: Encourage move to dev_pm_ops by warning on use of legacy methodsMark Brown1-0/+8
Since the PM core wishes to transition away from the legacy suspend and resume methods and since removing them makes using PM core features like runtime PM much easier start warning when a driver is registered using the legacy methods. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-01-14i2c: Factor out runtime suspend checks from PM operationsMark Brown1-48/+20
When devices use dev_pm_ops the I2C API is implementing standard functionality for integration with runtime PM and for checking for the presence of a per device op. The PM core provides pm_generic_ functions implementing this behaviour - use them to reduce coupling with future PM updates. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-01-14i2c: Unregister dummy devices last on adapter removalJean Delvare1-1/+13
Remove real devices first and dummy devices last. This gives device driver which instantiated dummy devices themselves a chance to clean them up before we do. Signed-off-by: Jean Delvare <khali@linux-fr.org> Tested-by: Hans Verkuil <hverkuil@xs4all.nl> Cc: stable@kernel.org
2011-01-14i2c: Convert SCx200 driver from using raw PCI to platform deviceAndres Salomon1-120/+80
The SCx200 ACB driver supports ISA hardware as well as PCI. The PCI hardware is CS5535/CS5536 based, and the device that it grabs is handled by the cs5535-mfd driver. This converts the SCx200 driver to use a platform_driver rather than the previous PCI hackery. The driver used to manually track the iface list (via linked list); now it only does this for ISA devices. PCI ifaces are handled through standard driver model lists. It's unclear what happens in case of errors in the old ISA code; rather than pretending the code actually cares, I've dropped the (implicit) ignorance of return values and marked it with a comment. Signed-off-by: Andres Salomon <dilinger@queued.net> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-01-13Merge branch 'for-linus/i2c-2638' of git://git.fluff.org/bjdooks/linuxLinus Torvalds10-61/+1086
* 'for-linus/i2c-2638' of git://git.fluff.org/bjdooks/linux: i2c-bfin-twi: move setup to the earlier subsys initcall i2c-bfin-twi: handle faulty slave devices better i2c-mv64xxx: send repeated START between messages in xfer i2c-nomadik: fix regression on adapter name i2c-omap: Set latency requirements only once for several messages i2c-eg20t: add driver for Intel EG20T i2c-ocores: add some device tree documentation i2c-ocores: Use devres for resource allocation i2c-ocores: Adapt for device tree i2c-iop3xx: add iomem annotation
2011-01-13Merge branch 'for-next' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits) Documentation/trace/events.txt: Remove obsolete sched_signal_send. writeback: fix global_dirty_limits comment runtime -> real-time ppc: fix comment typo singal -> signal drivers: fix comment typo diable -> disable. m68k: fix comment typo diable -> disable. wireless: comment typo fix diable -> disable. media: comment typo fix diable -> disable. remove doc for obsolete dynamic-printk kernel-parameter remove extraneous 'is' from Documentation/iostats.txt Fix spelling milisec -> ms in snd_ps3 module parameter description Fix spelling mistakes in comments Revert conflicting V4L changes i7core_edac: fix typos in comments mm/rmap.c: fix comment sound, ca0106: Fix assignment to 'channel'. hrtimer: fix a typo in comment init/Kconfig: fix typo anon_inodes: fix wrong function name in comment fix comment typos concerning "consistent" poll: fix a typo in comment ... Fix up trivial conflicts in: - drivers/net/wireless/iwlwifi/iwl-core.c (moved to iwl-legacy.c) - fs/ext4/ext4.h Also fix missed 'diabled' typo in drivers/net/bnx2x/bnx2x.h while at it.
2011-01-12Merge branch 'for-2638/i2c/bfin2' into for-linus/i2c-2638Ben Dooks1-1/+23
2011-01-12Merge branch 'for-2638/i2c/nomadik' into for-linus/i2c-2638Ben Dooks1-2/+4
2011-01-12Merge branch 'for-2638/i2c/intel' into for-linus/i2c-2638Ben Dooks3-0/+909
2011-01-12Merge branch 'for-2638/i2c/ocores' into for-linus/i2c-2638Ben Dooks1-43/+102
2011-01-12Merge branch 'for-2638/i2c/iop' into for-linus/i2c-2638Ben Dooks2-4/+4
2011-01-12Merge branch 'for-2638/i2c/omap' into for-linus/i2c-2638Ben Dooks1-4/+6
2011-01-12Merge branch 'for-2638/i2c/mv64xx' into for-linus/i2c-2638Ben Dooks1-7/+38
2011-01-12i2c-bfin-twi: move setup to the earlier subsys initcallMichael Hennerich1-1/+1
Some systems using this bus sometimes have very basic devices such as regulators on the bus, so the I2C bus master needs to be loaded early. This also matches the behavior of many other I2C bus master drivers. Therefore initialize via subsys_initcall(). Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-01-12i2c-bfin-twi: handle faulty slave devices betterMichael Hennerich1-0/+22
Faulty slave devices might drive SDA low after a transfer finishes. So, when this scenario is detected, have the master generate up to 9 extra clocks until the SDA is properly released. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-01-10i2c: Constify i2c_client where possibleJean Delvare1-13/+16
Helper functions for I2C and SMBus transactions don't modify the i2c_client that is passed to them, so it can be marked const. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-01-10i2c-algo-bit: Complain about masters which can't read SCLJean Delvare1-2/+12
The I2C specification explicitly describes both SDA and SCL as bidirectional lines. An I2C master with a read-only SCL is thus not compliant. If a slow slave stretches the clock, errors will happen, so the bus can't be considered as reliable. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-01-10i2c-algo-bit: Refactor adapter registrationJean Delvare1-16/+5
Use a function pointer to decide whether to call i2c_add_adapter or i2c_add_numbered_adapter. This makes the code more compact than the current strategy of having the common code in a separate function. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-01-10i2c: Add generic I2C multiplexer using GPIO APIPeter Korsgaard3-0/+197
Add an i2c mux driver providing access to i2c bus segments using a hardware MUX sitting on a master bus and controlled through gpio pins. E.G. something like: ---------- ---------- Bus segment 1 - - - - - | | SCL/SDA | |-------------- | | | |------------| | | | | | Bus segment 2 | | | Linux | GPIO 1..N | MUX |--------------- Devices | |------------| | | | | | | | Bus segment M | | | |---------------| | ---------- ---------- - - - - - SCL/SDA of the master I2C bus is multiplexed to bus segment 1..M according to the settings of the GPIO pins 1..N. Signed-off-by: Peter Korsgaard <peter.korsgaard@barco.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-01-10i2c-nforce2: Remove unnecessary cast of pci_get_drvdataJoe Perches1-1/+1
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>