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* gpio-lpc32xx: Fix value handling of gpio_direction_output()Roland Stigge2012-09-24
| | | | | | | | | | | For GPIOs of gpio-lpc32xx, gpio_direction_output() ignores the value argument (initial value of output). This patch fixes this by setting the level accordingly. Cc: stable@kernel.org Signed-off-by: Roland Stigge <stigge@antcom.de> Acked-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: rdc321x: Prevent removal of modules exporting active GPIOsAxel Lin2012-09-01
| | | | | | | | This driver can be built as a module, set the missing owner field of struct gpio_chip to prevent removal of modules exporting active GPIOs. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: em: Fix checking return value of irq_alloc_descsAxel Lin2012-08-31
| | | | | | | | irq_alloc_descs() returns negative error code on failure. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: mc9s08dz60: Fix build error if I2C=mAxel Lin2012-08-31
| | | | | | | | | | | | | | | | | | | Make GPIO_MC9S08DZ60 depend on I2C=y, this fixes below build error: LD init/built-in.o drivers/built-in.o: In function `mc9s08dz60_get_value': clk-fixed-factor.c:(.text+0x7214): undefined reference to `i2c_smbus_read_byte_data' drivers/built-in.o: In function `mc9s08dz60_set': clk-fixed-factor.c:(.text+0x727c): undefined reference to `i2c_smbus_read_byte_data' clk-fixed-factor.c:(.text+0x72bc): undefined reference to `i2c_smbus_write_byte_data' drivers/built-in.o: In function `mc9s08dz60_i2c_driver_init': clk-fixed-factor.c:(.init.text+0x290): undefined reference to `i2c_register_driver' drivers/built-in.o: In function `mc9s08dz60_i2c_driver_exit': clk-fixed-factor.c:(.exit.text+0x2c): undefined reference to `i2c_del_driver' make: *** [vmlinux] Error 1 Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: Fix debug message in of_get_named_gpio_flags()Thierry Reding2012-08-17
| | | | | | | | This was probably missed in the conversion done in commit 3d0f7cf ("gpio: Adjust of_xlate API to support multiple GPIO chips"). Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* GPIO: gpio-pxa: fix building without CONFIG_OFArnd Bergmann2012-08-14
| | | | | | | | | | | | | | | | Commit 7212157267 ("GPIO: gpio-pxa: fix devicetree functions") added an "xlate" function pointer to the irq_domain_ops, but this function is nor declared or defined anywhere when CONFIG_OF is disabled, causing the build error: drivers/gpio/gpio-pxa.c:532:11: error: 'irq_domain_xlate_twocell' undeclared here (not in a function) Extending the DT-only code section to cover the irq_domain_ops and the pxa_gpio_dt_ids solves this problem and makes it clearer which code is actually used without DT. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge tag 'gpio-fixes-v3.6-rc1' of ↵Linus Torvalds2012-08-12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull gpio fixes from Linus Walleij: - Fix a resource leak in the SCH driver - Fix the register address calculation in the MSIC driver - Fix the PXA driver's devicetree functions - Delete redundant shadow variable leftovers in the MXC driver - Specify the GPIO base for the device tree probe in the MXC driver - Add a modalias for the i.MX driver - Fix off-by-one bug in the Samsung driver - Fix erroneous errorpath in the Langwell driver * tag 'gpio-fixes-v3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: drivers/gpio/gpio-langwell.c: fix error return code gpio: samsung: Fix off-by-one bug in gpio addresses ARM: dts: imx: add alias for gpio gpio/mxc: specify gpio base for device tree probe gpio/mxc: remove redundant shadow variables initialization GPIO: gpio-pxa: fix devicetree functions gpio: msic: Fix calculating register address in msic_gpio_to_oreg() gpio-sch: Fix leak of resource
| * drivers/gpio/gpio-langwell.c: fix error return codeJulia Lawall2012-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert a 0 error return code to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ identifier ret; expression e,e1,e2,e3,e4,x; @@ ( if (\(ret != 0\|ret < 0\) || ...) { ... return ...; } | ret = 0 ) ... when != ret = e1 *x = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\|ioremap\|ioremap_nocache\|devm_ioremap\|devm_ioremap_nocache\)(...); ... when != x = e2 when != ret = e3 *if (x == NULL || ...) { ... when != ret = e4 * return ret; } // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * gpio: samsung: Fix off-by-one bug in gpio addressesSean Paul2012-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move gpc4 to the end of the automatically processed gpio controllers so we don't taint the automatic offset calculation. This bug caused all controllers coming after gpc4 to map to the incorrect address. The result is <&gpd1 0 0 0 0> would actually map to GPIO 0 in gpd0. Signed-off-by: Sean Paul <seanpaul@chromium.org> Reviewed-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Doug Anderson <dianders@chromium.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * gpio/mxc: specify gpio base for device tree probeShawn Guo2012-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, unlike the non-DT probe where the gpio base is specified with pdev->id, the DT probe uses the base dynamically allocated by gpio core, which uses a completely different numbering scheme. This causes two issues to user space applications which access sysfs entry /sys/class/gpio/gpioN. * It breaks the compatibility with user space applications between non-DT and DT kernels. * It's not intuitive and sometimes hard for users to map the Linux gpio number to the actual hardware pin. Use alias to identify the gpio port/bank, and then the gpio base can be specified with port id to solve above issues. If alias is not defined in device tree, the base number dynamically allocated by gpio core will be used. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Tested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * gpio/mxc: remove redundant shadow variables initializationShawn Guo2012-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | With commit 3e11f7b (gpio/generic: initialize basic_mmio_gpio shadow variables properly) in place, the shadow variables initialization is being done in generic driver bgpio_init call. Remove the redundant shadow variables initialization from gpio-mxc driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Tested-by: Dirk Behme <dirk.behme@de.bosch.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * GPIO: gpio-pxa: fix devicetree functionsDaniel Mack2012-08-05
| | | | | | | | | | | | | | | | | | | | | | Provide an of_xlate function for the PXA GPIO chips and make it work for devicetree environments. Successfully tested on a PXA3xx board. Signed-off-by: Daniel Mack <zonque@gmail.com> Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * gpio: msic: Fix calculating register address in msic_gpio_to_oreg()Axel Lin2012-08-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the case offset is 20 ... 23, the equation to get the register should be: INTEL_MSIC_GPIO1HV0CTLO - offset + 20 With above equation, we can get below mapping between offset and the register: offset is 20: INTEL_MSIC_GPIO1HV0CTLO offset is 21: INTEL_MSIC_GPIO1HV1CTLO offset is 22: INTEL_MSIC_GPIO1HV2CTLO offset is 23: INTEL_MSIC_GPIO1HV3CTLO Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * gpio-sch: Fix leak of resourceAlan Cox2012-08-04
| | | | | | | | | | Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | gpio: em: do not discard em_gio_irq_domain_cleanupArnd Bergmann2012-08-10
|/ | | | | | | | | | | | | | | | | | | | | | | | The newly added gpio-em driver marks its em_gio_irq_domain_cleanup function as __devexit, which would lead to that function being discarded in case CONFIG_HOTPLUG is disabled. However, the function is also called by the error handling logic em_gio_probe, which would cause a jump into a NULL pointer if it was removed from the kernel or module. Without this patch, building kzm9d_defconfig results in: WARNING: drivers/gpio/built-in.o(.devinit.text+0x330): Section mismatch in reference from the function em_gio_probe() to the function .devexit.text:em_gio_irq_domain_cleanup() The function __devinit em_gio_probe() references a function __devexit em_gio_irq_domain_cleanup(). This is often seen when error handling in the init function uses functionality in the exit path. The fix is often to remove the __devexit annotation of em_gio_irq_domain_cleanup() so it may be used outside an exit section. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Magnus Damm <damm@opensource.se> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Rafael J. Wysocki <rjw@sisk.pl>
* Merge tag 'mfd-3.6-1' of ↵Linus Torvalds2012-07-30
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6 Pull MFD bits from Samuel Ortiz: "We have support for a few new drivers: - Samsung s2mps11 - Wolfson Microelectronics wm5102 and wm5110 - Marvell 88PM800 and 88PM805 - TI twl6041 We also have our regular driver improvements: - Device tree and IRQ domain support for STE AB8500 - Regmap and devm_* API conversion for TI tps6586x - Device tree support for Samsung max77686 - devm_* API conversion for STE AB3100 Besides that, quite a lot of fixing and cleanup for mc13xxx, tps65910, tps65090, da9052 and twl-core." Fix up mostly trivial conflicts, with the exception of drivers/usb/host/ehci-omap.c in particular, which had some re-organization of the reset sequence (commit 1a49e2ac9651: "EHCI: centralize controller initialization") that clashed with commit 2761a6394516 ("mfd: USB: Fix the omap-usb EHCI ULPI PHY reset fix issues"). In particular, commit 2761a6394516 moved the usb_add_hcd() to the *middle* of the reset sequence, which clashes fairly badly with the reset sequence re-organization (although it could have been done inside the new omap_ehci_init() function). I left that part of commit 2761a6394516 just undone. * tag 'mfd-3.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (110 commits) mfd: Ensure AB8500 platform data is passed through db8500-prcmu to MFD Core mfd: Arizone core should select MFD_CORE mfd: Fix arizona-irq.c build by selecting REGMAP_IRQ mfd: Add debug trace on entering and leaving arizone runtime suspend mfd: Correct tps65090 cell names mfd: Remove gpio support from tps6586x core driver ARM: tegra: defconfig: Enable tps6586x gpio gpio: tps6586x: Add gpio support through platform driver mfd: Cache tps6586x register through regmap mfd: Use regmap for tps6586x register access. mfd: Use devm managed resources for tps6586x input: Add onkey support for 88PM80X PMIC mfd: Add support for twl6041 mfd: Fix twl6040 revision information mfd: Matches should be NULL when populate anatop child devices input: ab8500-ponkey: Create AB8500 domain IRQ mapping mfd: Add missing out of memory check for pcf50633 Documentation: Describe the AB8500 Device Tree bindings mfd: Add tps65910 32-kHz-crystal-input init mfd: Drop modifying mc13xxx driver's id_table in probe ...
| * gpio: tps6586x: Add gpio support through platform driverLaxman Dewangan2012-07-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Converting the gpio driver of tps6586x to a platform driver in place of registering the gpio through core driver. The motivation of the change is: - This is inline with the mfd drivers implementation. - This will move the related gpio support to gpio driver folder where all gpio related drivers are available. This will be easy the maintenance and enhancement is anything done for gpio. - The gpio functionality can be selected through config variable. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* | Merge tag 'gpio-for-v3.6' of ↵Linus Torvalds2012-07-26
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO changes from Linus Walleij: - New driver for AMD-8111 southbridge GPIOs - New driver for Wolfson Micro Arizona devices - Propagate device tree parse errors - Probe deferral finalizations - all expected calls to GPIO will now hopefully request deferral where apropriate - Misc updates to TCA6424, WM8994, LPC32xx, PCF857x, Samsung MXC, OMAP and PCA953X drivers. Fix up gpio_idx conflicts in drivers/gpio/gpio-mxc.c * tag 'gpio-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: gpio: of_get_named_gpio_flags() return -EPROBE_DEFER if GPIO not yet available gpiolib: Defer failed gpio requests by default MAINTAINERS: add entry OMAP GPIO driver gpio/pca953x: increase variables size to support 24 bit of data GPIO: PCA953X: Increase size of invert variable to support 24 bit gpio/omap: move bank->dbck initialization to omap_gpio_mod_init() gpio/mxc: use the edge_sel feature if available gpio: propagate of_parse_phandle_with_args errors gpio: samsung: add flags specifier to device-tree binding gpiolib: Add support for Wolfson Microelectronics Arizona class devices gpio: gpio-lpc32xx: Add gpio_to_irq mapping gpio: pcf857x: share 8/16 bit access functions gpio: LPC32xx: Driver cleanup MAINTAINERS: Add Wolfson gpiolib drivers to the Wolfson entry gpiolib: wm8994: Convert to devm_kzalloc() gpiolib: wm8994: Use irq_domain mappings for gpios gpio: add a driver for GPIO pins found on AMD-8111 south bridge chips gpio/tca6424: merge I2C transactions, remove cast gpio/of: fix a typo of comment message
| * | gpio: of_get_named_gpio_flags() return -EPROBE_DEFER if GPIO not yet availableRoland Stigge2012-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | of_get_named_gpio_flags() and of_get_named_gpio() return -EPROBE_DEFER if the respective GPIO is not (yet) available. This is useful if driver's probe() functions try to get a GPIO whose controller isn't probed yet. Thus, the driver can be probed again later on. The function still returns -EINVAL on other errors (parse error or node doesn't exist). This way, the case of an optional/intentionally missing GPIO is handled appropriately. Signed-off-by: Roland Stigge <stigge@antcom.de> Acked-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | gpiolib: Defer failed gpio requests by defaultMark Brown2012-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since users must be explicitly provided with a GPIO number in order to request one the overwhelmingly common case for failing to request will be that the required GPIO driver has not yet registered and we should therefore defer until it has registered. In order to avoid having to code this logic in individual drivers have gpio_request() return -EPROBE_DEFER when failing to look up the GPIO. Drivers which don't want this behaviour can override it if they desire. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | gpio/pca953x: increase variables size to support 24 bit of dataLeed Aguilar2012-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | Increase variable size from u16 to u32 to allocate 24 bit of data required for the TCA6424 I/O expander device type. Signed-off-by: Leed Aguilar <leed.aguilar@ti.com> Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | GPIO: PCA953X: Increase size of invert variable to support 24 bitChandrabhanu Mahapatra2012-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | TCA6424 is a low voltage 24 bit I2C and SMBus I/O expander of pca953x family similar to its 16 bit predecessor TCA6416. It comes with three 8-bit active Input, Output, Polarity Inversion and Configuration registers each. The polarity of Input ports can be reversed by setting the appropiate bit in Polarity Inversion registers. The variables corresponding to Input, Output and Configuration registers have already been updated to support 24 bit values. This patch thus updates the invert variable of PCA953X platform data to support 24 bit. Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | gpio/omap: move bank->dbck initialization to omap_gpio_mod_init()Tarun Kanti DebBarma2012-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the bank->dbck initialization in a one time operation there is no need to keep this within gpio_debounce(). Therefore, moving clk_get(bank->dbck) to omap_gpio_mod_init(). Since the value of bank->dbck would be NULL at the beginning, this check has been removed. Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com> Reported-by: Paul Walmsley <paul@pwsan.com> Reviewed-by: Jon Hunter <jon-hunter@ti.com> Cc: Kevin Hilman <khilman@ti.com> Cc: Rajendra Nayak <rnayak@ti.com> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com> Cc: Cousson, Benoit <b-cousson@ti.com> Reviewed-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | gpio/mxc: use the edge_sel feature if availableBenoît Thébaudeau2012-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some mxc processors have an edge_sel feature, which allows the IRQ to be triggered by any edge. This patch makes use of this feature if available, which skips mxc_flip_edge(). Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Sascha Hauer <kernel@pengutronix.de> Cc: <linux-arm-kernel@lists.infradead.org> Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | gpio: propagate of_parse_phandle_with_args errorsAlexandre Courbot2012-07-17
| | | | | | | | | | | | | | | | | | | | | | | | Make of_get_named_gpio_flags propagate any error it receives from of_parse_phandle_with_args instead of inconditionally returning -EINVAL. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | gpio: samsung: add flags specifier to device-tree bindingOlof Johansson2012-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a flags field to the gpio specifier for Samsung. I didn't want to add yet another field in the already quite long specifier, so I decided to compress it together with the Pull Up/Down settings instead. This is needed to, for example, have a gpio-keys input that is active low. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | gpiolib: Add support for Wolfson Microelectronics Arizona class devicesMark Brown2012-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Arizona class devices provide some GPIOs for use in the system. This driver provides support for these via gpiolib. Currently interrupts are not supported, normally the GPIOs are outputs only. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> [Fold in WM5110 support patch] Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | gpio: gpio-lpc32xx: Add gpio_to_irq mappingRoland Stigge2012-07-12
| | | | | | | | | | | | | | | | | | | | | | | | This patch helps mapping with gpio_to_irq for the GPIOs that are irq enabled. Signed-off-by: Roland Stigge <stigge@antcom.de> Tested-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | gpio: pcf857x: share 8/16 bit access functionsKuninori Morimoto2012-07-12
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds 8/16 bit write/read functions, and shared gpio input/output/set/get functions. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | gpio: LPC32xx: Driver cleanupRoland Stigge2012-07-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since LPC32xx is now switched over to devicetree based GPIO, the unused lpc32xx_gpio_init() can be removed. Further, the driver title changed since it referred to the wrong file. Signed-off-by: Roland Stigge <stigge@antcom.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | gpiolib: wm8994: Convert to devm_kzalloc()Mark Brown2012-07-12
| | | | | | | | | | | | | | | Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | gpiolib: wm8994: Use irq_domain mappings for gpiosMark Brown2012-07-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | This has no practical impact at present since we don't support device tree so any user must have set an irq_base but this will in future allow a transition to device tree with minimal invasiveness. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | gpio: add a driver for GPIO pins found on AMD-8111 south bridge chipsDmitry Eremin-Solenikov2012-07-12
| | | | | | | | | | | | | | | | | | | | | | | | Add a driver to use GPIO pins available on several AMD south bridges (currently only AMD 8111 is supported). Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | Merge branch 'gpio/merge' of git://git.secretlab.ca/git/linux-2.6 into grantLinus Walleij2012-07-05
| |\ \ | | |/ | |/| | | | Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| | * gpio/tca6424: merge I2C transactions, remove castAndreas Schallenberg2012-05-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a follow-up to ae79c1904 "[PATCH v2] Add support for TCA6424" merged in the v3.5 merge window. It fixes comments made when the patch was merged. - Use 3 byte transfers instead of two separate transfers (2+1 byte) - An unnecessary cast removed Signed-off-by: Andreas Schallenberg <Andreas.Schallenberg@3alitytechnica.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| | * gpio/of: fix a typo of comment messageDong Aisheng2012-05-25
| | | | | | | | | | | | | | | Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | Merge tag 'irq' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds2012-07-23
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull arm-soc sparse IRQ conversion from Arnd Bergmann: "The I.MX platform is getting converted to use sparse IRQs. We are doing this for all platforms over time, because this is one of the requirements for building a multiplatform kernel, and generally a good idea." * tag 'irq' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: imx: select USE_OF ARM: imx: Fix build error due to missing irqs.h include ARM: imx: enable SPARSE_IRQ for imx platform ARM: fiq: change FIQ_START to a variable tty: serial: imx: remove the use of MXC_INTERNAL_IRQS ARM: imx: remove unneeded mach/irq.h inclusion i2c: imx: remove unneeded mach/irqs.h inclusion ARM: imx: add a legacy irqdomain for mx31ads ARM: imx: add a legacy irqdomain for 3ds_debugboard ARM: imx: pass gpio than irq number into mxc_expio_init ARM: imx: leave irq_base of wm8350_platform_data uninitialized dma: ipu: remove the use of ipu_platform_data ARM: imx: move irq_domain_add_legacy call into avic driver ARM: imx: move irq_domain_add_legacy call into tzic driver gpio/mxc: move irq_domain_add_legacy call into gpio driver ARM: imx: eliminate macro IRQ_GPIOx() ARM: imx: eliminate macro IOMUX_TO_IRQ() ARM: imx: eliminate macro IMX_GPIO_TO_IRQ()
| * | | gpio/mxc: move irq_domain_add_legacy call into gpio driverShawn Guo2012-07-01
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move irq_domain_add_legacy call from imx*-dt.c into gpio driver and have the gpio driver adopt irqdomain support for both DT and non-DT boot. With all imx platform code converted from static gpio irq number computation to use run-time gpio_to_irq call, we can now use irq_alloc_descs and irqdomain support to dynamically get irq_base and have the mapping between gpio and irq number available without using virtual_irq_start and MXC_GPIO_IRQ_START. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Cc: Grant Likely <grant.likely@secretlab.ca> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
* | | gpio/gpio-tps65910: gpio_chip.of_node referenced without CONFIG_OF_GPIO definedJerry Snitselaar2012-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 626f9914 added code to initialize gpio_chip.of_node, but if CONFIG_OF_GPIO is not defined gps-tps65910 fails to build with an error complaining gpio_chip has no member of_node. I ran into this while doing a allyesconfig build on linux-next. Signed-off-by: Gerard Snitselaar <dev@snitselaar.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | | Merge branch 'kevin' into fixesLinus Walleij2012-07-09
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| * | | gpio/omap: fix invalid context restore of gpio bank-0Jon Hunter2012-07-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the gpio _runtime_resume/suspend functions are calling the get_context_loss_count() platform function if the function is populated for a gpio bank. This function is used to determine if the gpio bank logic state needs to be restored due to a power transition. This function will be populated for all banks, but it should only be called for banks that have the "loses_context" variable set. It is pointless to call this if loses_context is false as we know the context will never be lost and will not need restoring. For all OMAP2+ devices gpio bank-0 is in an always-on power domain and so will never lose context. We found that the get_context_loss_count() was being called for bank-0 during the probe and returning 1 instead of 0 indicating that the context had been lost. This was causing the context restore function to be called at probe time for this bank and because the context had never been saved, was restoring an invalid state. This ultimately resulted in a crash [1]. This issue is a regression that was exposed by commit 1b1287032 (gpio/omap: fix missing check in *_runtime_suspend()). There are multiple bugs here that need to be addressed ... 1. Why the always-on power domain returns a context loss count of 1? This needs to be fixed in the power domain code [2]. However, the gpio driver should not assume the loss count is 0 to begin with. 2. The omap gpio driver should never be calling get_context_loss_count for a gpio bank in a always-on domain. This is pointless and adds unneccessary overhead. 3. The OMAP gpio driver assumes that the initial power domain context loss count will be 0 at the time the gpio driver is probed. However, it could be possible that this is not the case and an invalid context restore could be performed during the probe. To avoid this only populate the get_context_loss_count() function pointer after the initial call to pm_runtime_get() has occurred. This will ensure that the first pm_runtime_put() initialised the loss count correctly. This patch addresses issues 2 and 3 above. [1] http://marc.info/?l=linux-omap&m=134065775323775&w=2 [2] http://marc.info/?l=linux-omap&m=134100413303810&w=2 Cc: Kevin Hilman <khilman@ti.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Linus Walleij <linus.walleij@stericsson.com> Cc: Tarun Kanti DebBarma <tarun.kanti@ti.com> Cc: Franky Lin <frankyl@broadcom.com> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com> Cc: NeilBrown <neilb@suse.de> Reported-by: Franky Lin <frankyl@broadcom.com> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Tested-by: Franky Lin <frankyl@broadcom.com> Acked-by: Kevin Hilman <khilman@ti.com> Tested-by: NeilBrown <neilb@suse.de> Signed-off-by: Jon Hunter <jon-hunter@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
| * | | gpio/omap: fix irq loss while in idle with debounce onGrazvydas Ignotas2012-06-26
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It seems that currently GPIO module is not working correctly during idle when debounce is enabled - the system almost never responds to button presses (observed on OMAP3530 ES2.1 and OMAP3630 ES1.2 pandora boards). Even though wakeups are probably working, it seems that the GPIO module itself is unable to detect input events and generate interrupts. OMAP35x TRM also states that: "If the debounce clock is inactive, the debounce cell gates all input signals and thus cannot be used." So whenever we are disabling debounce clocks (for PM or other reasons), be sure the module's debounce feature is disabled too. Cc: Kevin Hilman <khilman@ti.com> Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
* | | gpio: tps65910: initialize of_node of gpio_chipLaxman Dewangan2012-07-05
| | | | | | | | | | | | | | | | | | | | | | | | Initialize the gpio chip's of_node to the device's node to work with DT based system. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | | gpio/mxc: make irqs work for fsl,imx21-gpio devicesUwe Kleine-König2012-07-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The chained handler was set for the platform device with id == 0. When the gpio devices are instantiated by a device tree, all have id == -1 and so the handler was unset resulting in unusable gpio irqs on i.MX21 and i.MX27 (when using oftree). Acked-by: Shawn Guo <shawn.guo@linaro.org> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | | gpio: export devm_gpio_request_oneStephen Warren2012-07-05
| | | | | | | | | | | | | | | | | | | | | Without this, modules can't use this API, leading to build failures. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | | gpiolib: wm8994: Pay attention to the value set when enabling as outputMark Brown2012-07-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Not paying attention to the value being set is a bad thing because it means that we'll not set the hardware up to reflect what was requested. Not setting the hardware up to reflect what was requested means that the caller won't get the results they wanted. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@vger.kernel.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | | gpio/msm_v1: CONFIG_GPIO_MSM_V1 is only available on three SoCsChristian Dietrich2012-07-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The feature GPIO_MSM_V1 is only available on three SoCs. On all other MSM SoCs the INT_GPIO_GROUP{1,2} is undeclared, but Kconfig does allow such configurations. Therefore the produced configuration is valid, but does not compile. The problem is fixed by adding the missing Kconfig constraints. drivers/gpio/gpio-msm-v1.c: In function ‘msm_init_gpio’: drivers/gpio/gpio-msm-v1.c:629:26: error: 'INT_GPIO_GROUP1' undeclared drivers/gpio/gpio-msm-v1.c:630:26: error: 'INT_GPIO_GROUP2' undeclared Signed-off-by: Christian Dietrich <christian.dietrich@informatik.uni-erlangen.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | | gpio-sta2x11: don't use pdata if nullAlessandro Rubini2012-07-05
|/ / | | | | | | | | | | | | | | | | | | | | If there is no platform data available, the driver shouldn't use the pointer or it will oops. Since things will mostly work nonetheless, (the BIOS may have set up the pins properly), I'd better not fail the probe even in this case. Signed-off-by: Alessandro Rubini <rubini@gnudd.com> Acked-by: Giancarlo Asnaghi <giancarlo.asnaghi@st.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | gpio/samsung: fix the typo 'exynos5_xxx' instead of 'exonys5_xxx'Kukjin Kim2012-06-04
| | | | | | | | | | | | | | | | | | | | | | | | Should be 'exynos5_xxx' instead of 'exonys5_xxx'. It happened at the commit 30b842889eea ("Merge tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc") during v3.5 merge window. Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> [ My bad - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds2012-05-29
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MIPS updates from Ralf Baechle: "The whole series has been sitting in -next for quite a while with no complaints. The last change to the series was before the weekend the removal of an SPI patch which Grant - even though previously acked by himself - appeared to raise objections. So I removed it until the situation is clarified. Other than that all the patches have the acks from their respective maintainers, all MIPS and x86 defconfigs are building fine and I'm not aware of any problems introduced by this series. Among the key features for this patch series is a sizable patchset for Lantiq which among other things introduces support for Lantiq's flagship product, the FALCON SOC. It also means that the opensource developers behind this patchset have overtaken Lantiq's competing inhouse development team that was working behind closed doors. Less noteworthy the ath79 patchset which adds support for a few more chip variants, cleanups and fixes. Finally the usual dose of tweaking of generic code." Fix up trivial conflicts in arch/mips/lantiq/xway/gpio_{ebu,stp}.c where printk spelling fixes clashed with file move and eventual removal of the printk. * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (81 commits) MIPS: lantiq: remove orphaned code MIPS: Remove all -Wall and almost all -Werror usage from arch/mips. MIPS: lantiq: implement support for FALCON soc MTD: MIPS: lantiq: verify that the NOR interface is available on falcon soc MTD: MIPS: lantiq: implement OF support watchdog: MIPS: lantiq: implement OF support and minor fixes SERIAL: MIPS: lantiq: implement OF support GPIO: MIPS: lantiq: convert gpio-stp-xway to OF GPIO: MIPS: lantiq: convert gpio-mm-lantiq to OF and of_mm_gpio GPIO: MIPS: lantiq: move gpio-stp and gpio-ebu to the subsystem folder MIPS: pci: convert lantiq driver to OF MIPS: lantiq: convert dma to platform driver MIPS: lantiq: implement support for clkdev api MIPS: lantiq: drop ltq_gpio_request() and gpio_to_irq() OF: MIPS: lantiq: implement irq_domain support OF: MIPS: lantiq: implement OF support MIPS: lantiq: drop mips_machine support OF: PCI: const usage needed by MIPS MIPS: Cavium: Remove smp_reserve_lock. MIPS: Move cache setup to setup_arch(). ...
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