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path: root/drivers/gpio/gpio-tegra.c
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2014-05-09gpio: tegra: Make of_device_id array constJingoo Han1-1/+1
Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-05-09gpio: tegra: remove unnecessary OOM messagesJingoo Han1-3/+1
The site-specific OOM messages are unnecessary, because they duplicate the MM subsystem generic OOM message. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-12-11gpio: tegra: add missing error handling to probeStephen Warren1-1/+6
The call to gpiochip_add() is not currently error-checked. Add the missing checking. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-17gpio: tegra: use new gpio_lock_as_irq() APIStephen Warren1-0/+18
Whenever an IRQ is claimed or freed, call gpio_lock_as_irq() or gpio_unlock_as_irq() on the associated GPIO, to prevent that GPIO from being configured in a manner incompatible with an interrupt. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-18drivers/gpio: don't check resource with devm_ioremap_resourceWolfram Sang1-5/+0
devm_ioremap_resource does sanity checks on the given resource. No need to duplicate this in the driver. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Stephen Warren <swarren@nvidia.com>
2013-05-06Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linuxLinus Torvalds1-6/+5
Pull GPIO changes from Grant Likely: "The usual selection of bug fixes and driver updates for GPIO. Nothing really stands out except the addition of the GRGPIO driver and some enhacements to ACPI support" I'm pulling this despite the earlier mess. Let's hope it compiles these days. * tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux: (46 commits) gpio: grgpio: Add irq support gpio: grgpio: Add device driver for GRGPIO cores gpiolib-acpi: introduce acpi_get_gpio_by_index() helper GPIO: gpio-generic: remove kfree() from bgpio_remove call gpio / ACPI: Handle ACPI events in accordance with the spec gpio: lpc32xx: Fix off-by-one valid range checking for bank gpio: mcp23s08: convert driver to DT gpio/omap: force restore if context loss is not detectable gpio/omap: optimise interrupt service routine gpio/omap: remove extra context restores in *_runtime_resume() gpio/omap: free irq domain in probe() failure paths gpio: gpio-generic: Add 16 and 32 bit big endian byte order support gpio: samsung: Add terminating entry for exynos_pinctrl_ids gpio: mvebu: add dbg_show function MAX7301 GPIO: Do not force SPI speed when using OF Platform gpio: gpio-tps65910.c: fix checkpatch error gpio: gpio-timberdale.c: fix checkpatch error gpio: gpio-tc3589x.c: fix checkpatch errors gpio: gpio-stp-xway.c: fix checkpatch error gpio: gpio-sch.c: fix checkpatch error ...
2013-04-28Merge branch 'gic/cleanup' into next/socOlof Johansson1-2/+1
Merge in the gic cleanup since it has a handful of annoying internal conflicts with soc development branches. All of them are delete/delete conflicts. * gic/cleanup: irqchip: vic: add include of linux/irq.h irqchip: gic: Perform the gic_secondary_init() call via CPU notifier irqchip: gic: Call handle_bad_irq() directly arm: Move chained_irq_(enter|exit) to a generic file arm: Move the set_handle_irq and handle_arch_irq declarations to asm/irq.h Signed-off-by: Olof Johansson <olof@lixom.net> Conflicts: arch/arm/mach-shmobile/smp-emev2.c arch/arm/mach-shmobile/smp-r8a7779.c arch/arm/mach-shmobile/smp-sh73a0.c arch/arm/mach-socfpga/platsmp.c
2013-04-03gpio: tegra: add gpio wakeup source handlingJoseph Lo1-2/+19
This patch add the gpio wakeup source handling for the Tegra platform. It was be done by enabling the irq for the gpio in the gpio controller and enabling the bank irq of the gpio in the Tegra legacy irq controller when the system going to suspend. Based on the work by: Varun Wadekar <vwadekar@nvidia.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-03-26arm: Move chained_irq_(enter|exit) to a generic fileCatalin Marinas1-2/+1
These functions have been introduced by commit 10a8c383 (irq: introduce entry and exit functions for chained handlers) in asm/mach/irq.h. This patch moves them to linux/irqchip/chained_irq.h so that generic irqchip drivers do not rely on architecture specific header files. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Rob Herring <rob.herring@calxeda.com>
2013-03-04gpio/tegra: assume CONFIG_OFStephen Warren1-6/+5
Tegra only supports, and always enables, device tree. Remove all ifdefs and runtime checks for DT support from the driver. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-01-22gpio: Convert to devm_ioremap_resource()Thierry Reding1-5/+4
Convert all uses of devm_request_and_ioremap() to the newly introduced devm_ioremap_resource() which provides more consistent error handling. devm_ioremap_resource() provides its own error messages so all explicit error messages can be removed from the failure code paths. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Linus Walleij <linus.walleij@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-12-11Merge tag 'driver-core-3.8-rc1' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg Kroah-Hartman: "Here's the large driver core updates for 3.8-rc1. The biggest thing here is the various __dev* marking removals. This is going to be a pain for the merge with different subsystem trees, I know, but all of the patches included here have been ACKed by their various subsystem maintainers, as they wanted them to go through here. If this is too much of a pain, I can pull all of them out of this tree and just send you one with the other fixes/updates and then, after 3.8-rc1 is out, do the rest of the removals to ensure we catch them all, it's up to you. The merges should all be trivial, and Stephen has been doing them all in linux-next for a few weeks now quite easily. Other than the __dev* marking removals, there's nothing major here, some firmware loading updates and other minor things in the driver core. All of these have (much to Stephen's annoyance), been in linux-next for a while. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>" Fixed up trivial conflicts in drivers/gpio/gpio-{em,stmpe}.c due to gpio update. * tag 'driver-core-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (93 commits) modpost.c: Stop checking __dev* section mismatches init.h: Remove __dev* sections from the kernel acpi: remove use of __devinit PCI: Remove __dev* markings PCI: Always build setup-bus when PCI is enabled PCI: Move pci_uevent into pci-driver.c PCI: Remove CONFIG_HOTPLUG ifdefs unicore32/PCI: Remove CONFIG_HOTPLUG ifdefs sh/PCI: Remove CONFIG_HOTPLUG ifdefs powerpc/PCI: Remove CONFIG_HOTPLUG ifdefs mips/PCI: Remove CONFIG_HOTPLUG ifdefs microblaze/PCI: Remove CONFIG_HOTPLUG ifdefs dma: remove use of __devinit dma: remove use of __devexit_p firewire: remove use of __devinitdata firewire: remove use of __devinit leds: remove use of __devexit leds: remove use of __devinit leds: remove use of __devexit_p mmc: remove use of __devexit ...
2012-11-28gpio: remove use of __devinitdataBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devinitdata is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Grant Likely <grant.likely@secretlab.ca> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28gpio: remove use of __devinitBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Peter Tyser <ptyser@xes-inc.com> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com> Cc: Kevin Hilman <khilman@ti.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-17gpio: tegra: read output value when gpio is set in direction_outLaxman Dewangan1-0/+5
Read the output value when gpio is set for the output mode for gpio_get_value(). Reading input value in direction out does not give correct value. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-11-08gpio: tegra: Drop exporting static functionsAxel Lin1-2/+0
Both tegra_gpio_enable() and tegra_gpio_disable() are static functions, it does not make sense to export them. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-11-08gpio: tegra: Staticize non-exported symbolsAxel Lin1-2/+2
Both tegra_gpio_request() and tegra_gpio_free() are not referenced outside of this file, make them static. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-11-08gpio: tegra: fix suspend/resume apisLaxman Dewangan1-5/+13
Following are changes done to fix the suspend/resume functionality of tegra gpio driver: - Protect suspend/resume callbacks with CONFIG_PM_SLEEP because CONFIG_PM doesn't actually enable any of the PM callbacks, it only allows to enable CONFIG_PM_SLEEP and CONFIG_PM_RUNTIME. This means if CONFIG_PM is used to protect system sleep callbacks then it may end up unreferenced if only runtime PM is enabled. - Fix the suspend/resume APIs declaration as per callback prototype. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-10-26gpio/tegra: convert to use linear irqdomainLinus Walleij1-9/+5
The Tegra driver tries to do the work of irq_domain_add_linear() by reserving a bunch of descriptors somewhere and keeping track of the base offset, then calling irq_domain_add_legacy(). Let's stop doing that and simply use the linear IRQ domain. For this to work: use irq_create_mapping() in the IRQ iterator so that the descriptors get allocated here. Cc: Rob Herring <rob.herring@calxeda.com> Cc: Grant Likely <grant.likely@secretlab.ca> Tested-by: Stephen Warren <swarren@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-09-06gpio: tegra: remove useless includes of <mach/*.h>Stephen Warren1-3/+0
Nothing from these files is needed, so remove the includes. This helps single zImage work by reducing use of the mach-tegra/include/mach/ directory. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2012-04-18gpio: tegra: Hide tegra_gpio_enable/disable()Stephen Warren1-18/+18
Recent pinctrl discussions concluded that gpiolib APIs should in fact do whatever is required to mux a GPIO onto pins, by calling pinctrl APIs if required. This change implements this for the Tegra GPIO driver, and removes calls to the Tegra-specific APIs from drivers and board files. Cc: Chris Ball <cjb@laptop.org> Cc: linux-mmc@vger.kernel.org Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Chris Ball <cjb@laptop.org> # for sdhci-tegra.c Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Olof Johansson <olof@lixom.net>
2012-04-18gpio: tegra: configure pins during irq_set_typeStephen Warren1-0/+3
When a Tegra GPIO is used as an IRQ, it should be enabled as a GPIO (so the pinmux module isn't driving it as an output) and configured as a GPIO input (so the GPIO module isn't driving it as an output). Set this up automatically whenever an IRQ is requested, so that users of IRQs don't need to do this. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Olof Johansson <olof@lixom.net>
2012-04-04gpio: tegra: Iterate over the correct number of banksStephen Warren1-2/+2
When Tegra30 support was added to the Tegra GPIO driver, a few places which iterated over all banks were not converted to use the variable tegra_gpio_bank_count rather than hard-coding the bank count. Fix this. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Olof Johansson <olof@lixom.net>
2012-04-04gpio: tegra: fix register address calculations for Tegra30Stephen Warren1-13/+42
Tegra20 and Tegra30 share the same register layout within registers, but the addresses of the registers is a little different. Fix the driver to cope with this. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Olof Johansson <olof@lixom.net>
2012-03-28Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds1-1/+3
Pull GPIO changes for v3.4 from Grant Likely: "Primarily gpio device driver changes with some minor side effects under arch/arm and arch/x86. Also includes a few core changes such as explicitly supporting (electrical) open source and open drain outputs and some help for parsing gpio devicetree properties." Fix up context conflict due to Laxman Dewangan adding sleep control for the tps65910 driver separately for gpio's and regulators. * tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6: (34 commits) gpio/ep93xx: Remove unused inline function and useless pr_err message gpio/sodaville: Mark broken due to core irqdomain migration gpio/omap: fix redundant decoding of gpio offset gpio/omap: fix incorrect update to context.irqenable1 gpio/omap: fix incorrect context restore logic in omap_gpio_runtime_* gpio/omap: fix missing dataout context save in _set_gpio_dataout_reg gpio/omap: fix _set_gpio_irqenable implementation gpio/omap: fix trigger type to unsigned gpio/omap: fix wakeup_en register update in _set_gpio_wakeup() gpio: tegra: tegra_gpio_config shouldn't be __init gpio/davinci: fix enabling unbanked GPIO IRQs gpio/davinci: fix oops on unbanked gpio irq request gpio/omap: Fix section warning for omap_mpuio_alloc_gc() ARM: tegra: export tegra_gpio_{en,dis}able gpio/gpio-stmpe: Fix the value returned by _get_value routine Documentation/gpio.txt: Explain expected pinctrl interaction GPIO: LPC32xx: Add output reading to GPO P3 GPIO: LPC32xx: Fix missing bit selection mask gpio/omap: fix wakeups on level-triggered GPIOs gpio/omap: Fix IRQ handling for SPARSE_IRQ ...
2012-03-19gpio: tegra: tegra_gpio_config shouldn't be __initStephen Warren1-1/+1
This function is called from non-__init context, just like tegra_gpio_enable()/disable(). Remove the __init annotation to avoid section mismatch warnings during compile. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-12ARM: tegra: export tegra_gpio_{en,dis}ableArnd Bergmann1-0/+2
These two functions are used in drivers that can be modules, so they need to be exported. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Alan Ott <alan@signal11.us> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-02-26gpio: tegra: Fix build issue due to irq_domain rework.Stephen Warren1-8/+6
Commit 7da5a66 "irq_domain: Remove 'new' irq_domain in favour of the ppc one" changed the set of available irq domain APIs. Update the Tegra GPIO driver to account for those changes, to solve a build break. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-06gpio: tegra: Parameterize the number of banksStephen Warren1-9/+33
Tegra20's GPIO controller has 7 banks, and Tegra30's controller has 8 banks. Allow the number of banks to be configured at run-time by the device tree. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-06gpio: tegra: Dynamically allocate IRQ base, and support DTStephen Warren1-7/+18
Enhance the driver to dynamically allocate the base IRQ number, and create an IRQ domain for itself. The use of an IRQ domain ensures that any device tree node interrupts properties are correctly parsed. Describe interrupt-related properties in the device tree binding docs, and the contents of "child" node interrupts property. Update tegra*.dtsi to specify the required interrupt-related properties. Finally, remove the definition of TEGRA_GPIO_TO_IRQ; this macro no longer gives correct results since the IRQ numbers for GPIOs are dynamically allocated. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Olof Johansson <olof@lixom.net>
2012-01-02drivers/gpio/gpio-tegra.c: use devm_request_and_ioremapJulia Lawall1-8/+1
Reimplement a call to devm_request_mem_region followed by a call to ioremap or ioremap_nocache by a call to devm_request_and_ioremap. The semantic patch that makes this transformation is as follows: (http://coccinelle.lip6.fr/) // <smpl> @nm@ expression myname; identifier i; @@ struct platform_driver i = { .driver = { .name = myname } }; @@ expression dev,res,size; expression nm.myname; @@ -if (!devm_request_mem_region(dev, res->start, size, - \(res->name\|dev_name(dev)\|myname\))) { - ... - return ...; -} ... when != res->start ( -devm_ioremap(dev,res->start,size) +devm_request_and_ioremap(dev,res) | -devm_ioremap_nocache(dev,res->start,size) +devm_request_and_ioremap(dev,res) ) ... when any when != res->start // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-31Merge branch 'depends/rmk/gpio' into next/develArnd Bergmann1-7/+16
Conflicts: arch/arm/mach-mxs/include/mach/gpio.h arch/arm/plat-mxc/include/mach/gpio.h Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2011-10-13gpio/tegra: Convert to a platform deviceStephen Warren1-48/+95
v3: Make regs variable static. Remove empty init of tegra_gpio_banks. v2: Retrieve IRQ and memory addresses from resources instead of hard- coding them. Add back initialization of tegra_gpio_chip.of_node. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> [olof: switched probe routine to __devinit] Signed-off-by: Olof Johansson <olof@lixom.net>
2011-09-27ARM: 7101/1: arm/tegra: Replace <mach/gpio.h> with <mach/gpio-tegra.h>Stephen Warren1-0/+1
This will eventually allow <mach/gpio.h> to be deleted. This mirrors LinusW's recent equivalent work on various other ARM platforms. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-24ARM: 7053/1: gpio/tegra: Implement gpio_chip.to_irqStephen Warren1-1/+5
Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-24ARM: 7052/1: gpio/tegra: Remove use of irq_to_gpioStephen Warren1-6/+10
irq_to_gpio is being removed. Replace the only use of that API by the ARM Tegra sub-architecture. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-05gpio/tegra: Use engineering names in DT compatible propertyStephen Warren1-1/+1
Engineering names are more stable than marketing names. Hence, use them for Device Tree compatible properties instead. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-15gpio/tegra: add devicetree supportGrant Likely1-0/+10
Add support for decoding gpios from the device tree Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Olof Johansson <olof@lixom.net>
2011-06-15gpio/tegra: Move Tegra gpio driver to drivers/gpioGrant Likely1-0/+431
As part of the gpio driver consolidation, this patch moves the Tegra driver into drivers/gpio Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Colin Cross <ccross@android.com>
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