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2013-04-04Merge tag 'gpio-fixes-v3.9' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO fixes from Linus Walleij: "Two GPIO fixes for the v3.9 series: - Fix erroneous return value in the ICH driver - Make the STMPE driver proper properly on device tree boots" * tag 'gpio-fixes-v3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: gpio: stmpe: pass DT node to irqdomain gpio-ich: Fix value returned by ichx_gpio_request
2013-03-27gpio: stmpe: pass DT node to irqdomainGabriel Fernandez
The irq domain was implemented but the device tree node was not transmitted to irq_domain_add_simple(). Cc: stable@vger.kernel.org Signed-off-by: Gabriel Fernandez <gabriel.fernandez@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-03-27gpio-ich: Fix value returned by ichx_gpio_requestJean Delvare
Per Documentation/gpio.txt, gpio_request callbacks should return 0 on success or a negative value on error. So it is not clear what was meant by letting ichx_gpio_request return 1 in some cases, nor how a caller would interpret it. Align the code with the comment above it and consider pins as available by default. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Grant Likely <grant.likely@secretlab.ca> Acked-by: Peter Tyser <ptyser@xes-inc.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-03-24Merge tag 'pinctrl-fixes-for-v3.9' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pinctrl fixes from Linus Walleij: "Here are a few pinctrl fixes for the v3.9 rc series: - Usecount bounds checking so we do not go below zero on mux usecounts. - Loop range checking in GPIO ranges in the DT range parser. - Proper print in debugfs for pinconf state. - Fix compilation bug in generic pinconf code. - Minor bugfixes to abx500 and mvebu drivers." * tag 'pinctrl-fixes-for-v3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: pinmux: forbid mux_usecount to be set at UINT_MAX pinctrl: mvebu: fix checking for SoC specific controls pinctrl: generic: Fix compilation error pinctrl: Print the correct information in debugfs pinconf-state file pinctrl: abx500: Fix checking if pin use AlternateFunction register gpio: fix wrong checking condition for gpio range
2013-03-12Merge tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds
Pull ARM SoC fixes from Arnd Bergmann: "These bug fixes are for the largest part for mvebu/kirkwood, which saw a few regressions after the clock infrastructure was enabled, and for OMAP, which showed a few more preexisting bugs with the new multiplatform support. Other small fixes are for imx, mxs, tegra, spear and socfpga" * tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (37 commits) ARM: spear3xx: Use correct pl080 header file Arm: socfpga: pl330: Add #dma-cells for generic dma binding support ARM: multiplatform: Sort the max gpio numbers. ARM: imx: fix typo "DEBUG_IMX50_IMX53_UART" ARM: imx: pll1_sys should be an initial on clk arm: mach-orion5x: fix typo in compatible string of a .dts file arm: mvebu: fix address-cells in mpic DT node arm: plat-orion: fix address decoding when > 4GB is used arm: mvebu: Reduce reg-io-width with UARTs ARM: Dove: add RTC device node arm: mvebu: enable the USB ports on Armada 370 Reference Design board ARM: dove: drop "select COMMON_CLK_DOVE" rtc: rtc-mv: Add support for clk to avoid lockups gpio: mvebu: Add clk support to prevent lockup ARM: kirkwood: fix to retain gbe MAC addresses for DT kernels ARM: kirkwood: of_serial: fix clock gating by removing clock-frequency ARM: mxs: cfa10049: Fix fb initialisation function ARM: SPEAr13xx: Fix typo "ARCH_HAVE_CPUFREQ" ARM: OMAP: RX-51: add missing USB phy binding clk: Tegra: Remove duplicate smp_twd clock ...
2013-03-08gpio: mvebu: Add clk support to prevent lockupAndrew Lunn
The kirkwood SoC GPIO cores use the runit clock. Add code to clk_prepare_enable() runit, otherwise there is a danger of locking up the SoC by accessing the GPIO registers when runit clock is not ticking. Reported-by: Simon Baatz <gmbnomis@gmail.com> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Tested-by: Simon Baatz <gmbnomis@gmail.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Cc: <stable@vger.kernel.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-03-07gpio: fix wrong checking condition for gpio rangeHaojian Zhuang
If index++ calculates from 0, the checking condition of "while (index++)" fails & it doesn't check any more. It doesn't follow the loop that used at here. Replace it by endless loop at here. Then it keeps parsing "gpio-ranges" property until it ends. Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-03-02gpio/gpio-ich: fix ichx_gpio_check_available() return what callers expectMika Westerberg
ichx_gpio_check_available() returns either 0 or -ENXIO depending on whether the given GPIO is available or not. However, callers of this function treat the return value as boolean: ... if (!ichx_gpio_check_available(gpio, nr)) return -ENXIO; which erroneusly fails when the GPIO is available and not vice versa. Fix this by making the function return boolean as expected by the callers. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-03-02gpiolib: move comment to right functionAlexandre Courbot
This comment applies to gpio_to_chip(), not gpiod_to_chip(). Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-03-02gpiolib: use const parameters when possibleAlexandre Courbot
Constify descriptor parameter of gpiod_* functions for those that should obviously not modify it. This includes value or direction get, cansleep, and IRQ number query. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-03-02gpiolib: check descriptors validity before useAlexandre Courbot
Some functions dereferenced their GPIO descriptor argument without checking its validity first, potentially leading to an oops when given an invalid argument. This patch also makes gpio_get_value() more resilient when given an invalid GPIO, returning 0 instead of silently crashing. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Cc: Ryan Mallon <rmallon@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-28gpio: convert to idr_alloc()Tejun Heo
Convert to the much saner new idr interface. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-26Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linuxLinus Torvalds
Pull GPIO changes from Grant Likely: "This branch contains the usual set of individual driver improvements and bug fixes, as well as updates to the core code. The more notable changes include: - Internally add new API for referencing GPIOs by gpio_desc instead of number. Eventually this will become a public API - ACPI GPIO binding support" * tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux: (33 commits) arm64: select ARCH_WANT_OPTIONAL_GPIOLIB gpio: em: Use irq_domain_add_simple() to fix runtime error gpio: using common order: let 'static const' instead of 'const static' gpio/vt8500: memory cleanup missing gpiolib: Fix locking on gpio debugfs files gpiolib: let gpio_chip reference its descriptors gpiolib: use descriptors internally gpiolib: use gpio_chips list in gpiochip_find_base gpiolib: use gpio_chips list in sysfs ops gpiolib: use gpio_chips list in gpiochip_find gpiolib: use gpio_chips list in gpiolib_sysfs_init gpiolib: link all gpio_chips using a list gpio/langwell: cleanup driver gpio/langwell: Add Cloverview ids to pci device table gpio/lynxpoint: add chipset gpio driver. gpiolib: add missing braces in gpio_direction_show gpiolib-acpi: Fix error checks in interrupt requesting gpio: mpc8xxx: don't set IRQ_TYPE_NONE when creating irq mapping gpiolib: remove gpiochip_reserve() arm: pxa: tosa: do not use gpiochip_reserve() ...
2013-02-25Merge tag 'mfd-3.9-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6 Pull MFS updates from Samuel Ortiz: "This is the MFD pull request for the 3.9 merge window. No new drivers this time, but a bunch of fairly big cleanups: - Roger Quadros worked on a OMAP USBHS and TLL platform data consolidation, OMAP5 support and clock management code cleanup. - The first step of a major sync for the ab8500 driver from Lee Jones. In particular, the debugfs and the sysct interfaces got extended and improved. - Peter Ujfalusi sent a nice patchset for cleaning and fixing the twl-core driver, with a much needed module id lookup code improvement. - The regular wm5102 and arizona cleanups and fixes from Mark Brown. - Laxman Dewangan extended the palmas APIs in order to implement the palmas GPIO and rt drivers. - Laxman also added DT support for the tps65090 driver. - The Intel SCH and ICH drivers got a couple fixes from Aaron Sierra and Darren Hart. - Linus Walleij patchset for the ab8500 driver allowed ab8500 and ab9540 based devices to switch to the new abx500 pin-ctrl driver. - The max8925 now has device tree and irqdomain support thanks to Qing Xu. - The recently added rtsx driver got a few cleanups and fixes for a better card detection code path and now also supports the RTS5227 chipset, thanks to Wei Wang and Roger Tseng." * tag 'mfd-3.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (109 commits) mfd: lpc_ich: Use devres API to allocate private data mfd: lpc_ich: Add Device IDs for Intel Wellsburg PCH mfd: lpc_sch: Accomodate partial population of the MFD devices mfd: da9052-i2c: Staticize da9052_i2c_fix() mfd: syscon: Fix sparse warning mfd: twl-core: Fix kernel panic on boot mfd: rtsx: Fix issue that booting OS with SD card inserted mfd: ab8500: Fix compile error mfd: Add missing GENERIC_HARDIRQS dependecies Documentation: Add docs for max8925 dt mfd: max8925: Add dts mfd: max8925: Support dt for backlight mfd: max8925: Fix onkey driver irq base mfd: max8925: Fix mfd device register failure mfd: max8925: Add irqdomain for dt mfd: vexpress: Allow vexpress-sysreg to self-initialise mfd: rtsx: Support RTS5227 mfd: rtsx: Implement driving adjustment to device-dependent callbacks mfd: vexpress: Add pseudo-GPIO based LEDs mfd: ab8500: Rename ab8500 to abx500 for hwmon driver ...
2013-02-22Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 update from Martin Schwidefsky: "The most prominent change in this patch set is the software dirty bit patch for s390. It removes __HAVE_ARCH_PAGE_TEST_AND_CLEAR_DIRTY and the page_test_and_clear_dirty primitive which makes the common memory management code a bit less obscure. Heiko fixed most of the PCI related fallout, more often than not missing GENERIC_HARDIRQS dependencies. Notable is one of the 3270 patches which adds an export to tty_io to be able to resize a tty. The rest is the usual bunch of cleanups and bug fixes." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (42 commits) s390/module: Add missing R_390_NONE relocation type drivers/gpio: add missing GENERIC_HARDIRQ dependency drivers/input: add couple of missing GENERIC_HARDIRQS dependencies s390/cleanup: rename SPP to LPP s390/mm: implement software dirty bits s390/mm: Fix crst upgrade of mmap with MAP_FIXED s390/linker skript: discard exit.data at runtime drivers/media: add missing GENERIC_HARDIRQS dependency s390/bpf,jit: add vlan tag support drivers/net,AT91RM9200: add missing GENERIC_HARDIRQS dependency iucv: fix kernel panic at reboot s390/Kconfig: sort list of arch selected config options phylib: remove !S390 dependeny from Kconfig uio: remove !S390 dependency from Kconfig dasd: fix sysfs cleanup in dasd_generic_remove s390/pci: fix hotplug module init s390/pci: cleanup clp page allocation s390/pci: cleanup clp inline assembly s390/perf: cpum_cf: fallback to software sampling events s390/mm: provide PAGE_SHARED define ...
2013-02-21Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds
Pull ARM SoC cleanups from Arnd Bergmann: "A large number of cleanups, all over the platforms. This is dominated largely by the Samsung platforms (s3c, s5p, exynos) and a few of the others moving code out of arch/arm into more appropriate subsystems. The clocksource and irqchip drivers are now abstracted to the point where platforms that are already cleaned up do not need to even specify the driver they use, it can all get configured from the device tree as we do for normal device drivers. The clocksource changes basically touch every single platform in the process. We further clean up the use of platform specific header files here, with the goal of turning more of the platforms over to being "multiplatform" enabled, which implies that they cannot expose their headers to architecture independent code any more. It is expected that no functional changes are part of the cleanup. The overall reduction in total code lines is mostly the result of removing broken and obsolete code." * tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (133 commits) ARM: mvebu: correct gated clock documentation ARM: kirkwood: add missing include for nsa310 ARM: exynos: move exynos4210-combiner to drivers/irqchip mfd: db8500-prcmu: update resource passing drivers/db8500-cpufreq: delete dangling include ARM: at91: remove NEOCORE 926 board sunxi: Cleanup the reset code and add meaningful registers defines ARM: S3C24XX: header mach/regs-mem.h local ARM: S3C24XX: header mach/regs-power.h local ARM: S3C24XX: header mach/regs-s3c2412-mem.h local ARM: S3C24XX: Remove plat-s3c24xx directory in arch/arm/ ARM: S3C24XX: transform s3c2443 subirqs into new structure ARM: S3C24XX: modify s3c2443 irq init to initialize all irqs ARM: S3C24XX: move s3c2443 irq code to irq.c ARM: S3C24XX: transform s3c2416 irqs into new structure ARM: S3C24XX: modify s3c2416 irq init to initialize all irqs ARM: S3C24XX: move s3c2416 irq init to common irq code ARM: S3C24XX: Modify s3c_irq_wake to use the hwirq property ARM: S3C24XX: Move irq syscore-ops to irq-pm clocksource: always define CLOCKSOURCE_OF_DECLARE ...
2013-02-21Merge tag 'fixes-non-critical' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull non-critical ARM SoC bug fixes from Arnd Bergmann: "Bug fixes that did not make it into v3.8, mostly because they were not considered important enough, and in some cases because bugs only show up in combination with other patches destined for 3.9. This includes a few larger patches for GPIO on the Marvell PXA platform and a lot of Samsung specific bug fixes, as well as a series from Arnd to fix older build warnings." * tag 'fixes-non-critical' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits) ARM: SPEAr13xx: Enable CONFIG_ARCH_HAS_CPUFREQ ARM: imx: MACH_MX31ADS_WM1133_EV1 needs REGULATOR_WM8350 scripts/sortextable: silence script output ARM: s3c: i2c: add platform_device forward declaration ARM: mvebu: allow selecting mvebu without Armada XP ARM: pick Versatile by default for !MMU ARM: integrator: fix build with INTEGRATOR_AP off ARM: integrator/versatile: fix NOMMU warnings ARM: sa1100: don't warn about mach/ide.h ARM: shmobile: fix defconfig warning on CONFIG_USB ARM: w90x900: fix legacy assembly syntax ARM: samsung: fix assembly syntax for new gas ARM: disable virt_to_bus/virt_to_bus almost everywhere ARM: dts: Correct pin configuration of SD 4 for exynos4x12-pinctrl ARM: SAMSUNG: Silence empty switch warning in fimc-core.h ARM: SAMSUNG: Silence empty switch warning in sdhci.h ARM: msm: proc_comm_boot_wait should not be __init arm: vt8500: Update MAINTAINERS entry for arch-vt8500 ARM: integrator: ensure ap_syscon_base is initialised when !CONFIG_MMU ARM: S5PV210: Fix early uart output in fifo mode ...
2013-02-21Merge tag 'driver-core-3.9-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core patches from Greg Kroah-Hartman: "Here is the big driver core merge for 3.9-rc1 There are two major series here, both of which touch lots of drivers all over the kernel, and will cause you some merge conflicts: - add a new function called devm_ioremap_resource() to properly be able to check return values. - remove CONFIG_EXPERIMENTAL Other than those patches, there's not much here, some minor fixes and updates" Fix up trivial conflicts * tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (221 commits) base: memory: fix soft/hard_offline_page permissions drivercore: Fix ordering between deferred_probe and exiting initcalls backlight: fix class_find_device() arguments TTY: mark tty_get_device call with the proper const values driver-core: constify data for class_find_device() firmware: Ignore abort check when no user-helper is used firmware: Reduce ifdef CONFIG_FW_LOADER_USER_HELPER firmware: Make user-mode helper optional firmware: Refactoring for splitting user-mode helper code Driver core: treat unregistered bus_types as having no devices watchdog: Convert to devm_ioremap_resource() thermal: Convert to devm_ioremap_resource() spi: Convert to devm_ioremap_resource() power: Convert to devm_ioremap_resource() mtd: Convert to devm_ioremap_resource() mmc: Convert to devm_ioremap_resource() mfd: Convert to devm_ioremap_resource() media: Convert to devm_ioremap_resource() iommu: Convert to devm_ioremap_resource() drm: Convert to devm_ioremap_resource() ...
2013-02-20Merge tag 'dt-for-linus' of git://git.secretlab.ca/git/linuxLinus Torvalds
Pull device tree changes from Grant Likely: "All around device tree changes destined for v3.8. Aside from the documentation updates the highlights in this branch include: - Kbuild changes for using CPP with .dts files - locking fix from preempt_rt patchset - include DT alias names in device uevent - Selftest bugfixes and improvements - New function for counting phandles stanzas in a property - constify argument to of_node_full_name() - Various bug fixes This tree did also contain a commit to use platform_device_add instead of open-coding the device add code, but it caused problems with amba devices and needed to be reverted." * tag 'dt-for-linus' of git://git.secretlab.ca/git/linux: (23 commits) Revert "of: use platform_device_add" kbuild: limit dtc+cpp include path gpio: Make of_count_named_gpios() use new of_count_phandle_with_args() of: Create function for counting number of phandles in a property of/base: Clean up exit paths for of_parse_phandle_with_args() of/selftest: Use selftest() macro throughout of/selftest: Fix GPIOs selftest to cover the 7th case of: fix recursive locking in of_get_next_available_child() documentation/devicetree: Fix a typo in exynos-dw-mshc.txt OF: convert devtree lock from rw_lock to raw spinlock of/exynos_g2d: Add Bindings for exynos G2D driver kbuild: create a rule to run the pre-processor on *.dts files input: Extend matrix-keypad device tree binding devicetree: Move NS2 LEDs binding into LEDs directory of: use platform_device_add powerpc/5200: Fix size to request_mem_region() call documentation/devicetree: Fix typos of: add 'const' to of_node_full_name parameter of: Output devicetree alias names in uevent DT: add vendor prefixes for Renesas and Toshiba ...
2013-02-20Merge tag 'pinctrl-for-v3.9' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pinctrl changes from Linus Walleij: "These are the main pinctrl changes for the v3.9 merge window. The most interesting change by far is how the device core grabs pinctrl default handles avoiding the need to stick boilerplate into driver consumers. - Grabbing of default pinctrl handles from the device core. These are the hunks hitting drivers/base. All is ACKed by Greg, after a long discussion about different alternatives. - Some stuff also touches the MFD and ARM SoC trees, this has been coordinated and ACKed. - New drivers for: - The Tegra 114 sub-SoC - Allwinner sunxi - New ABx500 driver and sub-SoC drivers for AB8500, AB8505, AB9540 and AB8540. - Make it possible for hogged pins to enter a sleep mode, and make it possible for drivers to control that mode. - Various clean-up, extensions and device tree support to various pin controllers." * tag 'pinctrl-for-v3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (68 commits) pinctrl: tegra: add clfvs function to Tegra114 support pinctrl: generic: rename input schmitt disable pinctrl/pinconfig: add debug interface pinctrl: samsung: remove duplicated line ARM: ux500: use real AB8500 IRQ numbers instead of virtual ones ARM: ux500: remove irq_base property from platform_data pinctrl/abx500: use direct IRQ defines pinctrl/abx500: replace IRQ offsets with table read-in values pinctrl/abx500: move IRQ handling to ab8500-core pinctrl: exynos5440: remove erroneous __init pinctrl/abx500: adjust offset for get_mode() pinctrl/abx500: add Device Tree support pinctrl/abx500: align GPIO cluster boundaries pinctrl/abx500: prevent error path from corrupting returning error pinctrl: sunxi: add of_xlate function pinctrl/lantiq: fix pin number in ltq_pmx_gpio_request_enable pinctrl/lantiq: add functionality to falcon_pinconf_dbg_show pinctrl/lantiq: fix pinconfig parameters pinctrl/lantiq: one of the boot leds was defined incorrectly pinctrl/lantiq: only probe available pad controllers ...
2013-02-14gpio: em: Use irq_domain_add_simple() to fix runtime errorMagnus Damm
Adjust the gpio-em.c driver to reconsider the pdata->irq_base variable. Non-DT board code like for instance board-kzm9d.c needs to operate of a static IRQ range for platform devices. So this patch is updating the code to make use of the function irq_domain_add_simple() instead of irq_domain_add_linear(). Fixes a EMEV2 / KZM9D runtime error caused by the following commit: 7385500 gpio/em: convert to linear IRQ domain Cc: stable@kernel.org Signed-off-by: Magnus Damm <damm@opensource.se> Tested-by: Simon Horman <horms+renesas@verge.net.au> Reported-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-02-14drivers/gpio: add missing GENERIC_HARDIRQ dependencyHeiko Carstens
The VIA VX855/VX875 GPIO and RDC R-321x GPIO support drivers select MFD_CORE which itself depends on GENERIC_HARDIRQ support. So add this dependency to these two drivers as well to prevent selection of MFD_CORE. Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-02-13gpio: palmas: Add support for Palmas GPIOLaxman Dewangan
Add gpio driver for TI Palmas series PMIC. This has 8 gpio which can work as input/output. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-02-13gpio: Make of_count_named_gpios() use new of_count_phandle_with_args()Grant Likely
This patch replaces the horribly coded of_count_named_gpios() with a call to of_count_phandle_with_args() which is far more efficient. This also changes the return value of of_gpio_count() & of_gpio_named_count() from 'unsigned int' to 'int' so that it can return an error code. All the users of that function are fixed up to correctly handle a negative return value. v2: Split GPIO portion into a separate patch Tested-by: Andreas Larsson <andreas@gaisler.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Rob Herring <rob.herring@calxeda.com>
2013-02-11gpio: using common order: let 'static const' instead of 'const static'Chen Gang
'const static ' is not a common order, better to use 'static const' instead. building: make EXTRA_CFLAGS=-W ARCH=arm drivers/gpio/gpio-omap.c:1479: warning: 'static' is not at beginning of declaration drivers/gpio/gpio-omap.c:1485: warning: 'static' is not at beginning of declaration drivers/gpio/gpio-omap.c:1491: warning: 'static' is not at beginning of declaration Signed-off-by: Chen Gang <gang.chen@asianux.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-11gpio/vt8500: memory cleanup missingTony Prisk
This driver is missing a .remove callback, and the fail path on probe is incomplete. If an error occurs in vt8500_add_chips, gpio_base is not unmapped. The driver is also ignoring the return value from this function so if a chip fails to register it completes as successful. Replaced pr_err with dev_err in vt8500_add_chips since the device is available. There is also no .remove callback defined so the function is added. Signed-off-by: Tony Prisk <linux@prisktech.co.nz> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-11gpiolib: Fix locking on gpio debugfs filesGrant Likely
The debugfs files really need to hold the gpiolib spinlock before accessing the list. Otherwise chip addition/removal will cause an oops. Cc: Alexandre Courbot <acourbot@nvidia.com> Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-11gpiolib: let gpio_chip reference its descriptorsAlexandre Courbot
Add a pointer to the gpio_chip structure that references the array of GPIO descriptors belonging to the chip, and update gpiolib code to use this pointer instead of the global gpio_desc[] array. This is another step towards the removal of the gpio_desc[] global array. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.orh> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-11gpiolib: use descriptors internallyAlexandre Courbot
Make sure gpiolib works internally with descriptors and (chip, offset) pairs instead of using the global integer namespace. This prepares the ground for the removal of the global gpio_desc[] array and the introduction of the descriptor-based GPIO API. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> [grant.likely: Squash in fix for link error when CONFIG_SYSFS=n] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-09gpiolib: use gpio_chips list in gpiochip_find_baseAlexandre Courbot
Re-implement gpiochip_find_base using the list of chips instead of the global gpio_desc[] array. This makes it both simpler and more efficient, and is needed to remove the global descriptors array. The new code should preserve the exact same GPIO number assignment policy as the code it is replacing. There shouldn't be any visible change to the assigned GPIO numbers. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> [grant.likely: Added comment about assignment policy] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-09gpiolib: use gpio_chips list in sysfs opsAlexandre Courbot
This makes the code both simpler and faster compared to parsing the GPIO number space. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-09gpiolib: use gpio_chips list in gpiochip_findAlexandre Courbot
Using the GPIO chips list is much faster than parsing the entire GPIO number space. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-09gpiolib: use gpio_chips list in gpiolib_sysfs_initAlexandre Courbot
Use the small list of GPIO chips instead of parsing the whole GPIO number space. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-09gpiolib: link all gpio_chips using a listAlexandre Courbot
Add a list member to gpio_chip that allows all chips to be parsed quickly. The current method requires parsing the entire GPIO integer space, which is painfully slow. Using a list makes many chip operations that involve lookup or parsing faster, and also simplifies the code. It is also necessary to eventually get rid of the global gpio_desc[] array. The list of gpio_chips is always ordered by base GPIO number to ensure chips traversal is done in the right order. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-06driver-core: constify data for class_find_device()Michał Mirosław
All in-kernel users of class_find_device() don't really need mutable data for match callback. In two places (kernel/power/suspend_test.c, drivers/scsi/osd/osd_uld.c) this patch changes match callbacks to use const search data. The const is propagated to rtc_class_open() and power_supply_get_by_name() parameters. Note that there's a dev reference leak in suspend_test.c that's not touched in this patch. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-05Merge branch 'linusw/devel' of ↵Grant Likely
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git into gpio/next Device driver features, cleanups and bug fixes. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-05gpio/langwell: cleanup driverDavid Cohen
This patch cleans up cosmetic issues, remove useless functions and add to_lnw_priv() macro to replace many usages of container_of(). Signed-off-by: David Cohen <david.a.cohen@intel.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-05gpio/langwell: Add Cloverview ids to pci device tableDavid Cohen
Adds support for new Cloverview hardware. Signed-off-by: David Cohen <david.a.cohen@intel.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-05gpio/lynxpoint: add chipset gpio driver.Mathias Nyman
Add gpio support for Intel Lynxpoint chipset. Lynxpoint supports 94 gpio pins which can generate interrupts. Driver will fail requests for pins that are marked as owned by ACPI, or set in an alternate mode (non-gpio). Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-05Merge branch 'next/cleanup-header' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup From Kukjin Kim: AS I commented, this makes <mach/*.h> local so that they could be removed. * 'next/cleanup-header' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: (26 commits) ARM: S3C64XX: Fix missing header error with CONFIG_CPU_IDLE enabled ARM: S3C64XX: make regs-syscon-power.h local ARM: S3C64XX: make regs-sys.h local ARM: S3C64XX: make regs-srom.h local ARM: S3C64XX: make regs-modem.h local ARM: S3C64XX: make regs-gpio-memport.h local ARM: S3C64XX: make crag6410.h local ARM: S3C24XX: remove dsc.c and make regs-dsc.h local ARM: S3C24XX: remove idle.h ARM: S3C2412: cleanup regs-s3c2412.h ARM: S3C2416: remove regs-s3c2416-mem.h and regs-s3c2416.h ARM: S3C24XX: make vr1000-cpld.h, vr1000-irq.h and vr1000-map.h local ARM: S3C24XX: make otom-map.h local ARM: S3C24XX: make osiris-cpld.h and osiris-map.h local ARM: S3C24XX: make h1940.h and h1940-latch.h local ARM: S3C24XX: make gta02.h local ARM: S3C24XX: make bast-cpld.h, bast-irq.h and bast-map.h local ARM: S3C24XX: make anubis-cpld, anubis-irq and anubis-map local ARM: SAMSUNG: cleanup mach/gpio-fns.h gpio-track.h and gpio-nrs.h ARM: SAMSUNG: cleanup mach/regs-audss.h file ... Signed-off-by: Olof Johansson <olof@lixom.net>
2013-02-04gpiolib: add missing braces in gpio_direction_showAlexandre Courbot
Add missing braces in an if..else condition. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-02-04gpiolib-acpi: Fix error checks in interrupt requestingMathias Nyman
Print error message if requesting an interrupt fails. Use int instead of unsigned for interrupts in case of error values Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-02-04gpio: mpc8xxx: don't set IRQ_TYPE_NONE when creating irq mappingAnatolij Gustschin
Exporting gpios over sysfs GPIO interface throws genirq error messages, i.e. on an mpc5121 based board exporting GPIO 5 triggers it: # echo 229 > /sys/class/gpio/export genirq: Setting trigger mode 0 for irq 44 failed (mpc512x_irq_set_type+0x0/0x18c) Similar error messages appear in the kernel boot log since the board specifies GPIOs for matrix keypad and also SD Card write protect and card detect GPIOs in its device tree. For all these GPIOs there is an error message in the log. The issue is triggered by setting the irq type to IRQ_TYPE_NONE in the driver's irq_domain map function mpc8xxx_gpio_irq_map(). ... mpc8xxx_gpio_irq_map irq_set_irq_type __irq_set_trigger __irq_set_trigger() calls irq_set_type() callback of the mpc8xxx gpio irq chip with the IRQ_TYPE_NONE in its 'flags' argument. This callback is either mpc8xxx_irq_set_type() or mpc512x_irq_set_type(). Both these functions return -EINVAL in the case if IRQ_TYPE_NONE is passed in the flow_type argument. This return value triggers the observed error message in __irq_set_trigger(). Modifying these callbacks to not return an error in IRQ_TYPE_NONE case doesn't make any sense to me. The line setting IRQ_TYPE_NONE type has been originally added by commit 345e5c8a "powerpc: Add interrupt support to mpc8xxx_gpio". At this time set_irq_type() checked its type argument and returned 0 if the type argument didn't specify any meaningful type in its type sense bits (and thus was equal to IRQ_TYPE_NONE). Effectively this line was a nop and I wonder what was the point of adding it. Remove IRQ_TYPE_NONE setting in the irq_domain mapping function. Signed-off-by: Anatolij Gustschin <agust@denx.de> Acked-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-02-04gpiolib: remove gpiochip_reserve()Alexandre Courbot
gpiochip_reserve() has no user and stands in the way of the removal of the static gpio_desc[] array. Remove this function as well as the now unneeded RESERVED flag of struct gpio_desc. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-01-30gpio: delete AB8500 driverLinus Walleij
The AB8500 GPIO driver has been marked BROKEN for ages, and we have something better in store: a shiny new pinctrl driver. So let use delete this old driver as the first step. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-01-29gpio: mxs: Add IRQ_TYPE_EDGE_BOTH supportGwenhael Goavec-Merou
This patch adds support for IRQ_TYPE_EDGE_BOTH needed for some driver (gpio-keys). Inspired from gpio-mxc.c Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@armadeus.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-01-29gpiolib-acpi: Add ACPI5 event model support to gpio.Mathias Nyman
Add ability to handle ACPI events signalled by GPIO interrupts. ACPI5 platforms can use GPIO signaled ACPI events. These GPIO interrupts are handled by ACPI event methods which need to be called from the GPIO controller's interrupt handler. acpi_gpio_request_interrupt() finds out which gpio pins have acpi event methods and assigns interrupt handlers that calls the acpi event methods for those pins. Partially based on work by Rui Zhang <rui.zhang@intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-01-28ARM: dts: fix compatible value for exynos pinctrlKukjin Kim
Fix the incorrect compatible property value of pinctrl for EXYNOS4 SoCs. Cc: Thomas Abraham <thomas.ab@samsung.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-01-28ARM: dts: Fix compatible value of pinctrl module on EXYNOS5440Thomas Abraham
Fix the incorrect compatible property value of pin-controller module EXYNOS5440 SoC. Signed-off-by: Thomas Abraham <thomas.ab@samsung.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Grant Likely <grant.likely@secretlab.ca> [kgene.kim@samsung.com: fixed it in gpio together for exynos5440] Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-01-28gpio: pca953x: use managed resourcesLinus Walleij
Using the devm_* managed resources the pca driver can be simplified and cut down on boilerplate code. [gcl: fixed a inccorect reference to a removed label, "goto fail_out" became "return ret"] Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>