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2016-09-15gpio: wcove: fix implicit assumption module.h is presentPaul Gortmaker1-0/+1
The Kconfig for this file is: drivers/gpio/Kconfig:config GPIO_WHISKEY_COVE drivers/gpio/Kconfig: tristate "GPIO support for Whiskey Cove PMIC" ...but however it does not include module.h -- it in turn gets it from another header (gpio/driver.h) and we'd like to replace that with a forward delcaration of "struct module;" but if we do, this file will fail to compile. So we fix this first to avoid putting build failures into the bisect commit history. Cc: Ajay Thomas <ajay.thomas.david.rajamanickam@intel.com> Cc: Bin Gao <bin.gao@intel.com> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Alexandre Courbot <gnurou@gmail.com> Cc: linux-gpio@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-15gpio: loongson1: fix implicit assumption module.h is presentPaul Gortmaker1-0/+1
The Kconfig for this file is: drivers/gpio/Kconfig:config GPIO_LOONGSON1 drivers/gpio/Kconfig: tristate "Loongson1 GPIO support" ...but however it does not include module.h -- it in turn gets it from another header (gpio/driver.h) and we'd like to replace that with a forward delcaration of "struct module;" but if we do, this file will fail to compile. So we fix this first to avoid putting build failures into the bisect commit history. Cc: Keguang Zhang <keguang.zhang@gmail.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Alexandre Courbot <gnurou@gmail.com> Cc: linux-mips@linux-mips.org Cc: linux-gpio@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-15gpio: ath79: fix implicit assumption module.h is presentPaul Gortmaker1-0/+1
The Kconfig for this file is: drivers/gpio/Kconfig:config GPIO_ATH79 drivers/gpio/Kconfig: tristate "Atheros AR71XX/AR724X/AR913X GPIO support" ...but however it does not include module.h -- it in turn gets it from another header (gpio/driver.h) and we'd like to replace that with a forward delcaration of "struct module;" but if we do, this file will fail to compile. So we fix this first to avoid putting build failures into the bisect commit history. Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Alexandre Courbot <gnurou@gmail.com> Cc: linux-gpio@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-15gpio: altera: fix implicit assumption module.h is presentPaul Gortmaker1-0/+1
The Kconfig for this file is: drivers/gpio/Kconfig:config GPIO_ALTERA drivers/gpio/Kconfig: tristate "Altera GPIO" ...but however it does not include module.h -- it in turn gets it from another header (gpio/driver.h) and we'd like to replace that with a forward delcaration of "struct module;" but if we do, this file will fail to compile. So we fix this first to avoid putting build failures into the bisect commit history. Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Alexandre Courbot <gnurou@gmail.com> Cc: linux-gpio@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-15gpio: ts4800: fix implicit assumption module.h is presentPaul Gortmaker1-0/+1
The Kconfig for this file is: drivers/gpio/Kconfig:config GPIO_TS4800 drivers/gpio/Kconfig: tristate "TS-4800 DIO blocks and compatibles" ...but however it does not include module.h -- it in turn gets it from another header (gpio/driver.h) and we'd like to replace that with a forward delcaration of "struct module;" but if we do, this file will fail to compile. So we fix this first to avoid putting build failures into the bisect commit history. Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Alexandre Courbot <gnurou@gmail.com> Cc: linux-gpio@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-15gpio: sx150x: fix implicit assumption module.h is presentPaul Gortmaker1-2/+0
This file is currently getting module.h from a global gpio header and it will faii to build once we remove module.h from that. However, the driver is controlled with the following Kconfig: drivers/gpio/Kconfig:config GPIO_SX150X drivers/gpio/Kconfig: bool "Semtech SX150x I2C GPIO expander" and hence the two lines of MODULE_DEVICE_TABLE are no-ops that can simply be deleted. Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Alexandre Courbot <gnurou@gmail.com> Cc: linux-gpio@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-15gpio: palmas: fix implicit assumption module.h is presentPaul Gortmaker1-1/+0
This file is currently getting module.h from a global gpio header and it will fail to build once we remove module.h from that. However, the driver is controlled with the following Kconfig: drivers/gpio/Kconfig:config GPIO_PALMAS drivers/gpio/Kconfig: bool "TI PALMAS series PMICs GPIO" and hence the line of MODULE_DEVICE_TABLE is a no-op that can simply be deleted. In fact it should have been removed in an earlier commit that did demodularization, however the unseen include prevented my build testing from detecting it. Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Alexandre Courbot <gnurou@gmail.com> Cc: linux-gpio@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-13Revert "gpio: pca953x: initialize ret to zero to avoid returning garbage"Linus Walleij1-1/+1
This reverts commit 313b9a9938bf4076425741121d5d766826793e5d. This was already fixed by commit bf62efeb164343916ebb89dca6dfe5e6b6751700 "gpio: pca954x: fix undefined error code from remove" The latter is a better fix since it makes it easier to detect erronous code by not assigning a default error code. Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-13gpio: aspeed: add MODULE_LICENSE()Linus Walleij1-0/+1
The build complains about missing MODULE_LICENSE() in the Aspeed GPIO driver. The license is evident from the file header, put in "GPL". Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Alistair Popple <alistair@popple.id.au> Cc: Jeremy Kerr <jk@ozlabs.org> Cc: Andrew Jeffery <andrew@aj.id.au> Acked-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-13gpiolib: Forbid irqchip default trigger for ACPI enumerated devicesMika Westerberg1-1/+6
Follow DT and forbid default trigger if the GPIO irqchip device is enumerated from ACPI. Triggering for these devices will be configured automatically from ACPI interrupt resources provided by the BIOS. Suggested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-13gpio: constify gpio_chip structuresJulia Lawall20-20/+20
These structures are only used to copy into other structures, so declare them as const. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r disable optional_qualifier@ identifier i; position p; @@ static struct gpio_chip i@p = { ... }; @ok@ identifier r.i; expression e; position p; @@ e = i@p; @bad@ position p != {r.p,ok.p}; identifier r.i; struct gpio_chip e; @@ e@i@p @depends on !bad disable optional_qualifier@ identifier r.i; @@ static +const struct gpio_chip i = { ... }; // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-13gpio: lp873x: Use devm_gpiochip_add_data() for gpio registrationWei Yongjun1-11/+1
Use devm_gpiochip_add_data() for GPIO registration and remove the need of driver callback .remove. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-12gpio: pca953x: initialize ret to zero to avoid returning garbageColin Ian King1-1/+1
ret is not initialized so it contains garbage. Ensure garbage is not returned in the case that pdata && pdata->teardown is false by initializing ret to 0. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-12gpio: iop: Use generic GPIO MMIO functions for driverAlexander Shiyan2-94/+24
This patch switches the driver to use the generic GPIO MMIO functions that removes a bit of redundant and duplicate code. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-12gpio: fix documentation for gpiod_unexportAmitesh Singh1-2/+2
Both gpio_export and gpio_free APIs are obsolete now. Signed-off-by: Amitesh Singh <singh.amitesh@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-12gpio: pca953x: coding style fixesBartosz Golaszewski1-10/+13
pca953x_gpio_set_multiple() has some coding style issues that make it harder to read. Tweak the code a bit. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-12gpio: pca953x: remove an unused variableBartosz Golaszewski1-4/+1
The chip_type variable in struct pca953x_chip is no longer required. Remove it. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-12gpio: pca953x: refactor pca953x_read_regs()Bartosz Golaszewski1-14/+35
Avoid the unnecessary if-else in pca953x_read_regs() by spltting the routine into smaller, specialized functions and calling the right one via a function pointer held in struct pca953x. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-12gpio: pca953x: refactor pca953x_write_regs()Bartosz Golaszewski1-28/+47
Avoid the unnecessary if-else in pca953x_write_regs() by splitting the routine into smaller, specialized functions and calling the right one via a function pointer held in struct pca953x_chip. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-12gpio: pca953x: code shrinkBartosz Golaszewski1-85/+48
There are multiple places in the driver code where a switch (chip->chip_type) is used to determine the proper register offset. Unduplicate the code by adding a simple structure holding the possible offsets that differ between the pca953x and pca957x chip families and use it to avoid the checks. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-12gpio: lpc32xx: remove unused platform data fileVladimir Zapolskiy2-51/+14
ARM LPC32xx platform is device-tree only, there is no need to keep a file with GPIO platform data structures, however some of macro definitions should be moved to the driver code, which is the only user of the removed header file. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-12gpio/gpiolib: Forbid irqchip default trigger if probed over DTMarc Zyngier1-0/+9
Using a default trigger is a bad idea if using DT to configure interrupts, as the device's interrupt specifier will always contain the trigger configuration. Let's warn about that particular situation, and revert to not having a default. Hopefully, the couple of drivers still using this feature will quickly be fixed. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-08gpio: rcar: Add r8a7796 (R-Car M3-W) supportSimon Horman2-0/+5
R-Car Gen3's GPIO blocks are identical to Gen2's in every respect. Based on work for the r8a7795 (R-Car H3) by Ulrich Hecht. Cc: Ulrich Hecht <ulrich.hecht+renesas@gmail.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-08gpio: mrvl: dt-binding: remove orion-gpio descriptionBaruch Siach1-23/+0
The Orion GPIO controller binding description in mrvl-gpio.txt is obsolete, and duplicates the description in gpio-mvebu.txt. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-09-07gpio: Add Aspeed driverJoel Stanley3-0/+465
The Aspeed SoCs contain GPIOs banked by letter, where each bank contains 8 pins. The GPIO banks are then grouped in sets of four in the register layout. The implementation exposes multiple banks through the one driver and requests and releases pins via the pinctrl subsystem. The hardware supports generation of interrupts from all GPIO-capable pins. A number of hardware features are not yet supported: Configuration of interrupt direction (ARM or LPC), debouncing, and WDT reset tolerance for output ports. Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Alistair Popple <alistair@popple.id.au> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Andrew Jeffery <andrew@aj.id.au> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>