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path: root/drivers/gpio/gpio-rcar.c (follow)
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* gpio: rcar: Add r8a7795 (R-Car H3) supportUlrich Hecht2015-07-271-0/+4
| | | | | | | | | R-Car Gen3's GPIO blocks are identical to Gen2's in every respect. Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com> Acked-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: rcar: Fine-grained Runtime PM supportGeert Uytterhoeven2015-07-161-4/+16
| | | | | | | | | | | | | | | | | | | | Currently gpio modules are runtime-resumed at probe time. This means the gpio module will be active all the time (except during system suspend, if not configured as a wake-up source). While an R-Car Gen2 gpio module retains pins configured for output at the requested level while put in standby mode, gpio registercannot be accessed while suspended. Unfortunately pm_runtime_get_sync() cannot be called from all contexts where gpio register access is needed. Hence move the Runtime PM handling from probe/remove time to gpio request/free time, which is probably the best we can do. On r8a7791/koelsch, gpio modules 0, 1, 3, and 4 are now suspended during normal use (gpio2 is used for LEDs and regulators, gpio5 for keys, gpio6 for SD-Card CD & WP, gpio7 for keys and regulators). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: rcar: Check for irq_set_irq_wake() failuresGeert Uytterhoeven2015-06-011-2/+11
| | | | | | | | | | | | | | | | | | | | | | | | | If an interrupt controller doesn't support wake-up configuration, irq_set_irq_wake() returns an error code. Then any subsequent call trying to deconfigure wake-up will cause an imbalance, and a warning will be printed: WARNING: CPU: 1 PID: 1341 at kernel/irq/manage.c:540 irq_set_irq_wake+0x9c/0xf8() Unbalanced IRQ 26 wake disable To fix this, refrain from any further parent interrupt controller (de)configuration if irq_set_irq_wake() failed. Alternative fixes would be: - calling "gic_set_irqchip_flags(IRQCHIP_SKIP_SET_WAKE)" from the platform code, - setting "gic_chip.flags = IRQCHIP_SKIP_SET_WAKE" in the GIC driver code, but these were withheld as the GIC hardware doesn't really support wake-up interrupts. Fixes: ab82fa7da4dce5c7 ("gpio: rcar: Prevent module clock disable when wake-up is enabled") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: rcar: Prevent module clock disable when wake-up is enabledGeert Uytterhoeven2015-03-261-2/+31
| | | | | | | | | | | | | When the GPIO module is needed for wake-up, it's module clock must not be disabled. Hence implement irq_chip.irq_set_wake(), which increments/decrements the clock's enable_count when needed, and forwards the wake-up state to the upstream interrupt controller. This fixes wake-up from s2ram using gpio-keys when using a PM Domain to manage the module clock. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: rcar: Add more register documentationGeert Uytterhoeven2015-03-261-12/+12
| | | | | Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: rcar: Use local variable gpio_chip in gpio_rcar_probe()Geert Uytterhoeven2015-03-261-3/+3
| | | | | | | | The existing variable gpio_chip already points to the gpiochip instance, hence use it everywhere. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: rcar: Switch to use gpiolib irqchip helpersGeert Uytterhoeven2015-01-151-46/+23
| | | | | | | | | | Switch the R-Car Gen2 GPIO driver to use the gpiolib irqchip helpers. While doing this also make sure that gpiochip_irqchip_add() is called after the gpiochip itself is registered, as required. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: rcar: Fix error path for devm_kzalloc() failureGeert Uytterhoeven2015-01-151-4/+2
| | | | | | | | | | If the call to devm_kzalloc() fails, nothing must be cleant up. This was missed before because gpio_rcar_probe() had a "return" statement after the first "goto err0". Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Fixes: df0c6c80232f2ad4 ("gpio: rcar: Add minimal runtime PM support") Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: rcar: Add r8a7793 and r8a7794 supportHisashi Nakamura2014-11-271-9/+18
| | | | | | | | | | The device tree probing for R-Car M2-N (r8a7793) and R-Car E2 (r8a7794) is added. Signed-off-by: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com> Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* Merge tag 'gpio-v3.17-1' of ↵Linus Torvalds2014-08-091-6/+3
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO update from Linus Walleij: "This is the bulk of GPIO changes for the v3.17 development cycle, and this time we got a lot of action going on and it will continue: - The core GPIO library implementation has been split up in three different files: - gpiolib.c for the latest and greatest and shiny GPIO library code using GPIO descriptors only - gpiolib-legacy.c for the old integer number space API that we are phasing out gradually - gpiolib-sysfs.c for the sysfs interface that we are not entirely happy with, but has to live on for ABI compatibility - Add a flags argument to *gpiod_get* functions, with some backward-compatibility macros to ease transitions. We should have had the flags there from the beginning it seems, now we need to clean up the mess. There is a plan on how to move forward here devised by Alexandre Courbot and Mark Brown - Split off a special <linux/gpio/machine.h> header for the board gpio table registration, as per example from the regulator subsystem - Start to kill off the return value from gpiochip_remove() by removing the __must_check attribute and removing all checks inside the drivers/gpio directory. The rationale is: well what were we supposed to do if there is an error code? Not much: print an error message. And gpiolib already does that. So make this function return void eventually - Some cleanups of hairy gpiolib code, make some functions not to be used outside the library private and make sure they are not exported, remove gpiod_lock/unlock_as_irq() as the existing function is for driver-internal use and fine as it is, delete gpio_ensure_requested() as it is not meaningful anymore - Support the GPIOF_ACTIVE_LOW flag from gpio_request_one() function calls, which is logical since this is already supported when referencing GPIOs from e.g. device trees - Switch STMPE, intel-mid, lynxpoint and ACPI (!) to use the gpiolib irqchip helpers cutting down on GPIO irqchip boilerplate a bit more - New driver for the Zynq GPIO block - The usual incremental improvements around a bunch of drivers - Janitorial syntactic and semantic cleanups by Jingoo Han, and Rickard Strandqvist especially" * tag 'gpio-v3.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (37 commits) MAINTAINERS: update GPIO include files gpio: add missing includes in machine.h gpio: add flags argument to gpiod_get*() functions MAINTAINERS: Update Samsung pin control entry gpio / ACPI: Move event handling registration to gpiolib irqchip helpers gpio: lynxpoint: Convert to use gpiolib irqchip gpio: split gpiod board registration into machine header gpio: remove gpio_ensure_requested() gpio: remove useless check in gpiolib_sysfs_init() gpiolib: Export gpiochip_request_own_desc and gpiochip_free_own_desc gpio: move gpio_ensure_requested() into legacy C file gpio: remove gpiod_lock/unlock_as_irq() gpio: make gpiochip_get_desc() gpiolib-private gpio: simplify gpiochip_export() gpio: remove export of private of_get_named_gpio_flags() gpio: Add support for GPIOF_ACTIVE_LOW to gpio_request_one functions gpio: zynq: Clear pending interrupt when enabling a IRQ gpio: drop retval check enforcing from gpiochip_remove() gpio: remove all usage of gpio_remove retval in driver/gpio devicetree: Add Zynq GPIO devicetree bindings documentation ...
| * gpio: remove all usage of gpio_remove retval in driver/gpioabdoulaye berthe2014-07-221-4/+1
| | | | | | | | | | Signed-off-by: abdoulaye berthe <berthe.ab@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * gpio: rcar: clamp returned value to [0,1]Jürg Billeter2014-07-091-2/+2
| | | | | | | | | | | | | | | | While it will be clamped to bool by gpiolib, let's make this sane in the driver as well. Signed-off-by: Jürg Billeter <j@bitron.ch> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | gpio: rcar: Add support for DT IRQ flagsLaurent Pinchart2014-07-151-0/+1
|/ | | | | | | | | The gpio-rcar driver has no IRQ domain OF xlate function and thus ignores IRQ flags specified in DT. Fix this by using the two-cell xlate function. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: rcar: remove unnecessary OOM messagesJingoo Han2014-05-091-1/+0
| | | | | | | | | | 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> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: rcar: Add minimal runtime PM supportGeert Uytterhoeven2014-04-281-0/+8
| | | | | | | | | | This is just enough to automatically enable the functional clock, if present. Clock management during suspend/resume is still to be added. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Cc: linux-gpio@vger.kernel.org Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: rcar: Add helper variable dev = &pdev->devGeert Uytterhoeven2014-03-281-16/+16
| | | | | | | Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Cc: linux-gpio@vger.kernel.org Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* Merge tag 'gpio-v3.14-1' of ↵Linus Torvalds2014-01-211-16/+45
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO tree bulk changes from Linus Walleij: "A big set this merge window, as we have much going on in this subsystem. The changes to other subsystems (notably a slew of ARM machines as I am doing away with their custom APIs) have all been ACKed to the extent possible. Major changes this time: - Some core improvements and cleanups to the new GPIO descriptor API. This seems to be working now so we can start the exodus to this API, moving gradually away from the global GPIO numberspace. - Incremental improvements to the ACPI GPIO core, and move the few GPIO ACPI clients we have to the GPIO descriptor API right *now* before we go any further. We actually managed to contain this *before* we started to litter the kernel with yet another hackish global numberspace for the ACPI GPIOs, which is a big win. - The RFkill GPIO driver and all platforms using it have been migrated to use the GPIO descriptors rather than fixed number assignments. Tegra machine has been migrated as part of this. - New drivers for MOXA ART, Xtensa GPIO32 and SMSC SCH311x. Those should be really good examples of how I expect a nice GPIO driver to look these days. - Do away with custom GPIO implementations on a major part of the ARM machines: ks8695, lpc32xx, mv78xx0. Make a first step towards the same in the horribly convoluted Samsung S3C include forest. We expect to continue to clean this up as we move forward. - Flag GPIO lines used for IRQ on adnp, bcm-kona, em, intel-mid and lynxpoint. This makes the GPIOlib core aware that a certain GPIO line is used for IRQs and can then enforce some semantics such as disallowing a GPIO line marked as in use for IRQ to be switched to output mode. - Drop all use of irq_set_chip_and_handler_name(). The name provided in these cases were just unhelpful tags like "mux" or "demux". - Extend the MCP23s08 driver to handle interrupts. - Minor incremental improvements for rcar, lynxpoint, em 74x164 and msm drivers. - Some non-urgent bug fixes here and there, duplicate #includes and that usual kind of cleanups" Fix up broken Kconfig file manually to make this all compile. * tag 'gpio-v3.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (71 commits) gpio: mcp23s08: fix casting caused build warning gpio: mcp23s08: depend on OF_GPIO gpio: mcp23s08: Add irq functionality for i2c chips ARM: S5P[v210|c100|64x0]: Fix build error gpio: pxa: clamp gpio get value to [0,1] ARM: s3c24xx: explicit dependency on <plat/gpio-cfg.h> ARM: S3C[24|64]xx: move includes back under <mach/> scope Documentation / ACPI: update to GPIO descriptor API gpio / ACPI: get rid of acpi_gpio.h gpio / ACPI: register to ACPI events automatically mmc: sdhci-acpi: convert to use GPIO descriptor API ARM: s3c24xx: fix build error gpio: f7188x: set can_sleep attribute gpio: samsung: Update documentation gpio: samsung: Remove hardware.h inclusion gpio: xtensa: depend on HAVE_XTENSA_GPIO32 gpio: clps711x: Enable driver compilation with COMPILE_TEST gpio: clps711x: Use of_match_ptr() net: rfkill: gpio: convert to descriptor-based GPIO interface leds: s3c24xx: Fix build failure ...
| * Merge tag 'v3.13-rc3' into develLinus Walleij2013-12-091-1/+1
| |\ | | | | | | | | | Linux 3.13-rc3
| * | gpio: rcar: Support both edge trigger with DTLaurent Pinchart2013-12-031-13/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some versions of the R-Car GPIO controller support triggering on both edges of the input signal. Whether this capability is supported is currently specified in platform data. R-Car GPIO devices instantiated from the device tree have the capability turned off even when the hardware supports it. To fix this, add DT match data support to the driver, initialize both edge trigger support from match data and enable both edge trigger in r8a7790 and r8a7791 match data. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | gpio: rcar: Enable mask on suspendMagnus Damm2013-11-251-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now when lazy interrupt disable has been enabled in the driver then extend the code to set IRQCHIP_MASK_ON_SUSPEND which tells the core that only IRQs marked as wakeups need to stay enabled during Suspend-to-RAM. Tested on the Lager board with GPIO-keys and Suspend-to-RAM. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | gpio: rcar: Use lazy disableMagnus Damm2013-11-251-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Set the ->irq_enable() and ->irq_disable() methods to NULL to enable lazy disable of interrupts. This by itself provides some level of optimization, but is mainly enabled as ground work for future Suspend-to-RAM wake up support. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | | gpio: rcar: Fix level interrupt handlingValentine Barshak2013-12-121-1/+2
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | According to the manual, if a port is set for level detection using the corresponding bit in the edge/level select register and an external level interrupt signal is asserted, the corresponding bit in INTDT does not use the FF to hold the input. Thus, writing 1 to the corresponding bits in INTCLR cannot clear the corresponding bits in the INTDT register. Instead, when an external input signal is stopped, the corresponding bit in INTDT is cleared automatically. Since the INTDT bit cannot be cleared for the level interrupts until the interrupt signal is stopped, we end up with the infinite loop when using deferred (threaded) IRQ handling. Since a deferred interrupt is disabled by the low-level handler and re-enabled only when the deferred handler is completed, Fix the issue by dropping disabled interrupts from the pending mask as suggested by Laurent Pinchart <laurent.pinchart@ideasonboard.com> Changes in V2: * Drop disabled interrupts from pending mask altogether instead of dropping level interrupts one by one once they get handled. Signed-off-by: Valentine Barshak <valentine.barshak@cogentembedded.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | gpio: rcar: NULL dereference on error in probe()Dan Carpenter2013-11-251-1/+1
|/ | | | | | | | | | | | It's not obvious from the label name but "err1" tries to release "p->irq_domain" which leads to a NULL dereference. Fixes: 119f5e448d32 ('gpio: Renesas R-Car GPIO driver V3') Cc: stable@vger.kernel.org Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: rcar: Include linux/of.h headerSachin Kamat2013-10-161-0/+1
| | | | | | | | 'of_match_ptr' is defined in linux/of.h. Include it explicitly to avoid build breakage in the future. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* Merge tag 'v3.12-rc4' into develLinus Walleij2013-10-161-4/+3
|\ | | | | | | Linux 3.12-rc4
| * gpio: rcar: Remove #gpio-range-cells DT property usageLaurent Pinchart2013-09-221-4/+3
| | | | | | | | | | | | | | | | | | | | Commit a1bc260bb5f5d95da854be7898202d788e94448d ("gpio: clean up gpio-ranges documentation") deprecated the #gpio-range-cells property. Replace its usage with a hardcoded value in the gpio-rcar driver. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* | gpio: rcar: drop references to "virtual" IRQLinus Walleij2013-10-161-6/+6
|/ | | | | | | | | | Rename the argument "virq" to just "irq", this IRQ isn't any more "virtual" than any other Linux IRQ number, we use "hwirq" for the actual hw-numbers, "virq" is just bogus. Cc: Magnus Damm <damm@opensource.se> Acked-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: use dev_get_platdata()Jingoo Han2013-08-161-1/+1
| | | | | | | | Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* Merge tag 'gpio-for-v3.11-1' of ↵Linus Torvalds2013-07-031-1/+8
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO updates from Linus Walleij: "Here is a batch of GPIO changes for v3.11. I have agreed with Grant to take care of the pull requests for this development cycle. No special things are happening in the GPIO tree this time (nice with some calm) and I have been extra careful to do regression builds and it's well boiled in -next. GPIO changes for the v3.11 development cycle: - Incremental development for the Langwell (Atom SoC), Xilinx, ICH and RCAR drivers. - Cleanups from Jingoo Han, Axel Lin, Wei Jongjun, Wolfram Sang, Tushar Behera, Sachin Kamat and Yijing Wang" * tag 'gpio-for-v3.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (35 commits) Gpio/trivial: replace numeric with standard PM state macros gpiolib: remove warnning of allocations with IRQs disabled gpio: grgpio: Staticize local symbols gpio-langwell: remove Withney point support gpio: ich: add GPO_BLINK support gpio-sta2x11: Convert to use devm_ioremap_resource gpio_msm: Convert to use devm_ioremap_resource gpio-rcar: Use OUTDT when reading GPIOs configured as output gpio-sta2x11: Fix potential NULL pointer dereference gpio/omap: omap_gpio_init_context stub must be inline gpio: msm-v1: Remove errant __devinit to fix compile gpio: devres: make comments proper GPIO: xilinx: Enable driver for Xilinx zynq DT: Add documentation for gpio-xilinx GPIO: xilinx: Use BIT macro GPIO: xilinx: Use __raw_readl/__raw_writel IO functions GPIO: xilinx: Add support for dual channel GPIO: xilinx: Simplify driver probe function gpio: sx150x: convert to use devm_* functions MAINTAINERS: add linux-gpio mailing list ...
| * gpio-rcar: Use OUTDT when reading GPIOs configured as outputMagnus Damm2013-06-171-1/+8
| | | | | | | | | | | | | | | | | | Testing on r8a7790 shows that INDT does not indicate the correct pin state when reading a GPIO configured as output, so update the gpio_rcar_get() function to handle this case. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | Merge tag 'renesas-gpio-rcar2-for-v3.11' of ↵Arnd Bergmann2013-06-211-6/+2
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/drivers From Simon Horman: Second Round of Renesas ARM based SoC GPIO R-Car updates for v3.11 Documentation enhancement and code cleanup by Laurent Pinchart. * tag 'renesas-gpio-rcar2-for-v3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: gpio-rcar: Remove #ifdef CONFIG_OF around OF-specific sections gpio-rcar: Reference core gpio documentation in the DT bindings Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| * | gpio-rcar: Remove #ifdef CONFIG_OF around OF-specific sectionsLaurent Pinchart2013-06-191-6/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All functions and data types used by OF-specific code paths are declared in <linux/of.h> regardless of CONFIG_OF. Replace the #ifdef CONFIG_OF guard with a if(IS_ENABLED(CONFIG_OF)) and let the compiler optimize the unused code away. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* | | gpio: rcar: fix gpio_rcar_of_tableArnd Bergmann2013-06-191-0/+1
|/ / | | | | | | | | | | | | | | The device table needs to be terminated with an empty element. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Cc: Simon Horman <horms+renesas@verge.net.au>
* | gpio-rcar: Add DT supportLaurent Pinchart2013-06-121-10/+56
| | | | | | | | | | | | | | | | | | Add DT bindings for the gpio-rcar driver and read the device configuration from the DT node at probe time if available. Cc: devicetree-discuss@lists.ozlabs.org Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* | gpio-rcar: Add support for IRQ_TYPE_EDGE_BOTHSimon Horman2013-06-041-5/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | As hardware support for this feature is not universal for all SoCs a flag, has_both_edge_trigger, has been added to the platform data of the driver to allow this feature to be enabled. The motivation for this is to allow use of the gpio-keys driver on the lager board which is based on the r8a7790 SoC. The V2 of this patch has been fully exercised using that driver on that board. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* | gpio-rcar: R-Car GPIO IRQ share interruptKuninori Morimoto2013-06-041-1/+1
|/ | | | | | | | | | R-Car H1 or Gen2 GPIO interrupts are assigned per each GPIO domain, but, Gen1 E1/M1 GPIO interrupts are shared for all GPIO domain. gpio-rcar driver needs IRQF_SHARED flags for these. This patch was tested on Bock-W board Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* gpio-rcar: Add pinctrl supportLaurent Pinchart2013-04-031-0/+23
| | | | | | | | | Register the GPIO pin range, and request and free GPIO pins using the pinctrl API. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* gpio: Renesas R-Car GPIO driver V3Magnus Damm2013-04-031-0/+373
This patch is V3 of a GPIO driver for the R-Car series of SoCs from Renesas. This driver is designed to be reusable between multiple SoCs that share the same basic building block, but so far it has only been used on R-Car H1 (r8a7779). Each driver instance handles 32 GPIOs with individually maskable IRQs. The driver operates on a single I/O memory range and the 32 GPIOs are hooked up a single interrupt. In the case of R-Car H1 either external IRQ pins or GPIOs with interrupts can be used for on-board interupts. For external IRQs 4 pins are supported, and in the case of GPIO there are 202 GPIOS as 202 interrupts hooked up via 6 driver instances and to the GIC and the Cortex-A9 Quad. At this point this driver is interfacing as a regular platform device driver. In the future DT support will be submitted as an incremental feature patch. Signed-off-by: Magnus Damm <damm@opensource.se> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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