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gpiolib: add drivers/gpio directory Add an empty drivers/gpio directory for gpiolib infrastructure and GPIO expanders. It will be populated by later patches. This won't be the only place to hold such gpio_chip code. Many external chips add a few GPIOs as secondary functionality (such as MFD drivers) and platform code frequently needs to closely integrate GPIO and IRQ support. This is placed *early* in the build/link sequence since it's common for other drivers to depend on GPIOs to do their work, so they must be initialized early in the device_initcall() sequence. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:17 -08:00
gpio: remove some legacy comments in build files The build files for drivers/gpio has some wording and comments about the directory being reserved exclusively for GPIO expanders (according to the gpio.txt file these are on external busses) and this has been false for some time. We already have PL061 and Xilinx drivers which are in silicon and now I'm moving more silicon drivers here, so delete this and reword it a bit. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-05-20 00:40:19 -06:00
gpiolib: add drivers/gpio directory Add an empty drivers/gpio directory for gpiolib infrastructure and GPIO expanders. It will be populated by later patches. This won't be the only place to hold such gpio_chip code. Many external chips add a few GPIOs as secondary functionality (such as MFD drivers) and platform code frequently needs to closely integrate GPIO and IRQ support. This is placed *early* in the build/link sequence since it's common for other drivers to depend on GPIOs to do their work, so they must be initialized early in the device_initcall() sequence. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:17 -08:00
gpiolib/arches: Centralise bolierplate asm/gpio.h Rather than requiring architectures that use gpiolib but don't have any need to define anything custom to copy an asm/gpio.h provide a Kconfig symbol which architectures must select in order to include gpio.h and for other architectures just provide the trivial implementation directly. This makes it much easier to do gpiolib updates and is also a step towards making gpiolib APIs available on every architecture. For architectures with existing boilerplate code leave a stub header in place which warns on direct inclusion of asm/gpio.h and includes linux/gpio.h to catch code that's doing this. Direct inclusion of asm/gpio.h has long been deprecated. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Jonas Bonn <jonas@southpole.se> Acked-by: Tony Luck <tony.luck@intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-04-15 10:52:54 +01:00
gpiolib: allow user-selection This patch adds functionality to the gpio-lib subsystem to make it possible to enable the gpio-lib code even if the architecture code didn't request to get it built in. The archtitecture code does still need to implement the gpiolib accessor functions in its asm/gpio.h file. This patch adds the implementations for x86 and PPC. With these changes it is possible to run generic GPIO expansion cards on every architecture that implements the trivial wrapper functions. Support for more architectures can easily be added. Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: David Brownell <david-b@pacbell.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jean Delvare <khali@linux-fr.org> Cc: Samuel Ortiz <sameo@openedhand.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 01:46:11 -07:00
gpiolib: add drivers/gpio directory Add an empty drivers/gpio directory for gpiolib infrastructure and GPIO expanders. It will be populated by later patches. This won't be the only place to hold such gpio_chip code. Many external chips add a few GPIOs as secondary functionality (such as MFD drivers) and platform code frequently needs to closely integrate GPIO and IRQ support. This is placed *early* in the build/link sequence since it's common for other drivers to depend on GPIOs to do their work, so they must be initialized early in the device_initcall() sequence. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:17 -08:00
gpiolib: allow user-selection This patch adds functionality to the gpio-lib subsystem to make it possible to enable the gpio-lib code even if the architecture code didn't request to get it built in. The archtitecture code does still need to implement the gpiolib accessor functions in its asm/gpio.h file. This patch adds the implementations for x86 and PPC. With these changes it is possible to run generic GPIO expansion cards on every architecture that implements the trivial wrapper functions. Support for more architectures can easily be added. Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: David Brownell <david-b@pacbell.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jean Delvare <khali@linux-fr.org> Cc: Samuel Ortiz <sameo@openedhand.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 01:46:11 -07:00
gpiolib: add drivers/gpio directory Add an empty drivers/gpio directory for gpiolib infrastructure and GPIO expanders. It will be populated by later patches. This won't be the only place to hold such gpio_chip code. Many external chips add a few GPIOs as secondary functionality (such as MFD drivers) and platform code frequently needs to closely integrate GPIO and IRQ support. This is placed *early* in the build/link sequence since it's common for other drivers to depend on GPIOs to do their work, so they must be initialized early in the device_initcall() sequence. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:17 -08:00
gpiolib: allow user-selection This patch adds functionality to the gpio-lib subsystem to make it possible to enable the gpio-lib code even if the architecture code didn't request to get it built in. The archtitecture code does still need to implement the gpiolib accessor functions in its asm/gpio.h file. This patch adds the implementations for x86 and PPC. With these changes it is possible to run generic GPIO expansion cards on every architecture that implements the trivial wrapper functions. Support for more architectures can easily be added. Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: David Brownell <david-b@pacbell.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jean Delvare <khali@linux-fr.org> Cc: Samuel Ortiz <sameo@openedhand.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 01:46:11 -07:00
gpiolib: add drivers/gpio directory Add an empty drivers/gpio directory for gpiolib infrastructure and GPIO expanders. It will be populated by later patches. This won't be the only place to hold such gpio_chip code. Many external chips add a few GPIOs as secondary functionality (such as MFD drivers) and platform code frequently needs to closely integrate GPIO and IRQ support. This is placed *early* in the build/link sequence since it's common for other drivers to depend on GPIOs to do their work, so they must be initialized early in the device_initcall() sequence. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:17 -08:00
gpiolib: allow user-selection This patch adds functionality to the gpio-lib subsystem to make it possible to enable the gpio-lib code even if the architecture code didn't request to get it built in. The archtitecture code does still need to implement the gpiolib accessor functions in its asm/gpio.h file. This patch adds the implementations for x86 and PPC. With these changes it is possible to run generic GPIO expansion cards on every architecture that implements the trivial wrapper functions. Support for more architectures can easily be added. Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: David Brownell <david-b@pacbell.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jean Delvare <khali@linux-fr.org> Cc: Samuel Ortiz <sameo@openedhand.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 01:46:11 -07:00
gpio: remove some legacy comments in build files The build files for drivers/gpio has some wording and comments about the directory being reserved exclusively for GPIO expanders (according to the gpio.txt file these are on external busses) and this has been false for some time. We already have PL061 and Xilinx drivers which are in silicon and now I'm moving more silicon drivers here, so delete this and reword it a bit. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-05-20 00:40:19 -06:00
gpiolib: allow user-selection This patch adds functionality to the gpio-lib subsystem to make it possible to enable the gpio-lib code even if the architecture code didn't request to get it built in. The archtitecture code does still need to implement the gpiolib accessor functions in its asm/gpio.h file. This patch adds the implementations for x86 and PPC. With these changes it is possible to run generic GPIO expansion cards on every architecture that implements the trivial wrapper functions. Support for more architectures can easily be added. Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: David Brownell <david-b@pacbell.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jean Delvare <khali@linux-fr.org> Cc: Samuel Ortiz <sameo@openedhand.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 01:46:11 -07:00
gpiolib: add drivers/gpio directory Add an empty drivers/gpio directory for gpiolib infrastructure and GPIO expanders. It will be populated by later patches. This won't be the only place to hold such gpio_chip code. Many external chips add a few GPIOs as secondary functionality (such as MFD drivers) and platform code frequently needs to closely integrate GPIO and IRQ support. This is placed *early* in the build/link sequence since it's common for other drivers to depend on GPIOs to do their work, so they must be initialized early in the device_initcall() sequence. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:17 -08:00
gpiolib: make GPIO_DEVRES depend on GPIOLIB Current Kconfig allows GPIO_DEVRES to be selected and compiled without GPIOLIB. This does not make sense anymore since GPIOLIB has become the exclusive way to deal with GPIOs. This patch makes GPIO_DEVRES available only if GPIOLIB is selected. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-20 15:14:59 -07:00
gpio: Move DT support code into drivers/gpio The code in drivers/of/gpio.c isn't shared by any other subsystem since it is all gpiolib specific. drivers/gpio is a better place to maintain these functions. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Linus Walleij <linus.walleij@stericsson.com>
2012-04-07 14:31:33 -06:00
sparc: Allow OF_GPIO on sparc. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-06 15:33:33 -08:00
gpio: Move DT support code into drivers/gpio The code in drivers/of/gpio.c isn't shared by any other subsystem since it is all gpiolib specific. drivers/gpio is a better place to maintain these functions. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Linus Walleij <linus.walleij@stericsson.com>
2012-04-07 14:31:33 -06:00
gpio / ACPI: add ACPI support Add support for translating ACPI GPIO pin numbers to Linux GPIO API pins. Needs a gpio controller driver with the acpi handler hook set. Drivers can use acpi_get_gpio() to translate ACPI5 GpioIO and GpioInt resources to Linux GPIO's. Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-30 12:37:36 +01:00
gpio: add IRQ chip helpers in gpiolib This provides a function gpiochip_irqchip_add() to set up an irqchip for a GPIO controller, and a function gpiochip_set_chained_irqchip() to chain it to a parent irqchip. Most GPIOs are of the type where a number of lines form a cascaded interrupt controller chained onto the primary system interrupt controller (or further down the chain) so let's add this helper and factor the code to request the lines to be used as IRQs, the .to_irq() function and the irqdomain into the core as well. Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-03-25 10:40:18 +01:00
gpio: select IRQ_DOMAIN for gpiolib irqchip helpers These helpers depend on the IRQ_DOMAIN so select it explicitly, as it will not be present on all platforms such as Intel desktops and laptops using Intel-MID. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-05-29 16:52:46 +02:00
gpio: add IRQ chip helpers in gpiolib This provides a function gpiochip_irqchip_add() to set up an irqchip for a GPIO controller, and a function gpiochip_set_chained_irqchip() to chain it to a parent irqchip. Most GPIOs are of the type where a number of lines form a cascaded interrupt controller chained onto the primary system interrupt controller (or further down the chain) so let's add this helper and factor the code to request the lines to be used as IRQs, the .to_irq() function and the irqdomain into the core as well. Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-03-25 10:40:18 +01:00
gpiolib: add drivers/gpio directory Add an empty drivers/gpio directory for gpiolib infrastructure and GPIO expanders. It will be populated by later patches. This won't be the only place to hold such gpio_chip code. Many external chips add a few GPIOs as secondary functionality (such as MFD drivers) and platform code frequently needs to closely integrate GPIO and IRQ support. This is placed *early* in the build/link sequence since it's common for other drivers to depend on GPIOs to do their work, so they must be initialized early in the device_initcall() sequence. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:17 -08:00
trivial: fix typos/grammar errors in Kconfig texts Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-01-26 11:12:25 +01:00
gpiolib: add drivers/gpio directory Add an empty drivers/gpio directory for gpiolib infrastructure and GPIO expanders. It will be populated by later patches. This won't be the only place to hold such gpio_chip code. Many external chips add a few GPIOs as secondary functionality (such as MFD drivers) and platform code frequently needs to closely integrate GPIO and IRQ support. This is placed *early* in the build/link sequence since it's common for other drivers to depend on GPIOs to do their work, so they must be initialized early in the device_initcall() sequence. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:17 -08:00
gpio: sysfs interface This adds a simple sysfs interface for GPIOs. /sys/class/gpio /export ... asks the kernel to export a GPIO to userspace /unexport ... to return a GPIO to the kernel /gpioN ... for each exported GPIO #N /value ... always readable, writes fail for input GPIOs /direction ... r/w as: in, out (default low); write high, low /gpiochipN ... for each gpiochip; #N is its first GPIO /base ... (r/o) same as N /label ... (r/o) descriptive, not necessarily unique /ngpio ... (r/o) number of GPIOs; numbered N .. N+(ngpio - 1) GPIOs claimed by kernel code may be exported by its owner using a new gpio_export() call, which should be most useful for driver debugging. Such exports may optionally be done without a "direction" attribute. Userspace may ask to take over a GPIO by writing to a sysfs control file, helping to cope with incomplete board support or other "one-off" requirements that don't merit full kernel support: echo 23 > /sys/class/gpio/export ... will gpio_request(23, "sysfs") and gpio_export(23); use /sys/class/gpio/gpio-23/direction to (re)configure it, when that GPIO can be used as both input and output. echo 23 > /sys/class/gpio/unexport ... will gpio_free(23), when it was exported as above The extra D-space footprint is a few hundred bytes, except for the sysfs resources associated with each exported GPIO. The additional I-space footprint is about two thirds of the current size of gpiolib (!). Since no /dev node creation is involved, no "udev" support is needed. Related changes: * This adds a device pointer to "struct gpio_chip". When GPIO providers initialize that, sysfs gpio class devices become children of that device instead of being "virtual" devices. * The (few) gpio_chip providers which have such a device node have been updated. * Some gpio_chip drivers also needed to update their module "owner" field ... for which missing kerneldoc was added. * Some gpio_chips don't support input GPIOs. Those GPIOs are now flagged appropriately when the chip is registered. Based on previous patches, and discussion both on and off LKML. A Documentation/ABI/testing/sysfs-gpio update is ready to submit once this merges to mainline. [akpm@linux-foundation.org: a few maintenance build fixes] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de> Cc: Greg KH <greg@kroah.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 01:46:07 -07:00
drivers/gpio: remove depends on CONFIG_EXPERIMENTAL The CONFIG_EXPERIMENTAL config item has not carried much meaning for a while now and is almost always enabled by default. As agreed during the Linux kernel summit, remove it from any "depends on" lines in Kconfigs. CC: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-16 18:53:32 -08:00
gpio: sysfs interface This adds a simple sysfs interface for GPIOs. /sys/class/gpio /export ... asks the kernel to export a GPIO to userspace /unexport ... to return a GPIO to the kernel /gpioN ... for each exported GPIO #N /value ... always readable, writes fail for input GPIOs /direction ... r/w as: in, out (default low); write high, low /gpiochipN ... for each gpiochip; #N is its first GPIO /base ... (r/o) same as N /label ... (r/o) descriptive, not necessarily unique /ngpio ... (r/o) number of GPIOs; numbered N .. N+(ngpio - 1) GPIOs claimed by kernel code may be exported by its owner using a new gpio_export() call, which should be most useful for driver debugging. Such exports may optionally be done without a "direction" attribute. Userspace may ask to take over a GPIO by writing to a sysfs control file, helping to cope with incomplete board support or other "one-off" requirements that don't merit full kernel support: echo 23 > /sys/class/gpio/export ... will gpio_request(23, "sysfs") and gpio_export(23); use /sys/class/gpio/gpio-23/direction to (re)configure it, when that GPIO can be used as both input and output. echo 23 > /sys/class/gpio/unexport ... will gpio_free(23), when it was exported as above The extra D-space footprint is a few hundred bytes, except for the sysfs resources associated with each exported GPIO. The additional I-space footprint is about two thirds of the current size of gpiolib (!). Since no /dev node creation is involved, no "udev" support is needed. Related changes: * This adds a device pointer to "struct gpio_chip". When GPIO providers initialize that, sysfs gpio class devices become children of that device instead of being "virtual" devices. * The (few) gpio_chip providers which have such a device node have been updated. * Some gpio_chip drivers also needed to update their module "owner" field ... for which missing kerneldoc was added. * Some gpio_chips don't support input GPIOs. Those GPIOs are now flagged appropriately when the chip is registered. Based on previous patches, and discussion both on and off LKML. A Documentation/ABI/testing/sysfs-gpio update is ready to submit once this merges to mainline. [akpm@linux-foundation.org: a few maintenance build fixes] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de> Cc: Greg KH <greg@kroah.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 01:46:07 -07:00
gpio: reorganize drivers Sort the gpio makefile and enforce the naming convention gpio-*.c for gpio drivers. v2: cleaned up filenames in Kconfig and comment blocks v3: fixup use of BASIC_MMIO to GENERIC_GPIO for mxc Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-04 18:38:28 -06:00
gpio: remove some legacy comments in build files The build files for drivers/gpio has some wording and comments about the directory being reserved exclusively for GPIO expanders (according to the gpio.txt file these are on external busses) and this has been false for some time. We already have PL061 and Xilinx drivers which are in silicon and now I'm moving more silicon drivers here, so delete this and reword it a bit. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-05-20 00:40:19 -06:00
gpiolib: add drivers/gpio directory Add an empty drivers/gpio directory for gpiolib infrastructure and GPIO expanders. It will be populated by later patches. This won't be the only place to hold such gpio_chip code. Many external chips add a few GPIOs as secondary functionality (such as MFD drivers) and platform code frequently needs to closely integrate GPIO and IRQ support. This is placed *early* in the build/link sequence since it's common for other drivers to depend on GPIOs to do their work, so they must be initialized early in the device_initcall() sequence. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:17 -08:00
gpio: split GPIO drivers in submenus Create Kconfig submenus for memory mapped, I2C, MFD, PCI, SPI and USB GPIO drivers to help navigate the forest of drivers in this subsystem. The I2C, SPI and USB menus get dependencies so we don't have to see them unless we have the required subsystem enabled in the first place. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 15:11:16 +02:00
gpio: add driver for MAX7300 I2C GPIO extender Add the MAX7300-I2C variant of the MAX7301-SPI version. Both chips share the same core logic, so the generic part of the in-kernel SPI-driver is refactored into a generic part. The I2C and SPI specific funtions are then wrapped into seperate drivers picking up the generic part. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Juergen Beisert <j.beisert@pengutronix.de> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Jean Delvare <khali@linux-fr.org> Cc: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-05 13:44:33 -08:00
gpio: split GPIO drivers in submenus Create Kconfig submenus for memory mapped, I2C, MFD, PCI, SPI and USB GPIO drivers to help navigate the forest of drivers in this subsystem. The I2C, SPI and USB menus get dependencies so we don't have to see them unless we have the required subsystem enabled in the first place. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 15:11:16 +02:00
GPIO: add new Xilinx driver for powerpc This driver supports the Xilinx XPS GPIO IP core which has the typical GPIO features. Signed-off-by: Kiran Sutariya <kirans@xilinx.com> Signed-off-by: John Linn <john.linn@xilinx.com> Cc: David Brownell <david-b@pacbell.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kumar Gala <galak@gate.crashing.org> Cc: "Grant Likely" <grant.likely@secretlab.ca> Cc: <avorontsov@ru.mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-12 13:25:38 -08:00
GPIO: Add driver for 74xx-ICs with MMIO access This patch adds driver to support GPIO functionality for 74xx-compatible ICs with MMIO access. Compatible models include: 1 bit: 741G125 (Input), 741G74 (Output) 2 bits: 742G125 (Input), 7474 (Output) 4 bits: 74125 (Input), 74175 (Output) 6 bits: 74365 (Input), 74174 (Output) 8 bits: 74244 (Input), 74273 (Output) 16 bits: 741624 (Input), 7416374 (Output) Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-10-03 11:31:57 +04:00
gpio: arrange Kconfig symbols alphabetically This rearranges the GPIO drivers Kconfig symbols alphabetically as the top comment in the file already states they should be. No functional changes whatsoever. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 10:08:56 +02:00
gpio: driver for AMD Promontory This patch adds a new GPIO driver for AMD Promontory chip. This GPIO controller is enumerated by ACPI and the ACPI compliant hardware ID is AMDF030. Change history: v2: 1. fix coding style 2. registers renaming v3: 1. change include file 2. fix coding style 3. remove module_init/exit, add module_platform_driver 4. remove MODULE_ALIAS v4: 1. change TOTAL_GPIO_PINS to PT_TOTAL_GPIO 2. remove PCI dependency in Kconfig 3. fix subject line Signed-off-by: YD Tseng <Yd_Tseng@asmedia.com.tw> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-10-19 11:07:37 +08:00
gpio: move BCM Kona Kconfig option Move the Kconfig option for the Broadcom BCM Kona up to the commin GPIO controllers, as it is currently grouped under MODULbus expanders which it definately is not. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:36:17 +02:00
gpio: Add GPIO support for Broadcom STB SoCs This adds support for the GPIO IP "UPG GIO" used on Broadcom STB SoCs (BCM7XXX and some others). Uses basic_mmio_gpio to instantiate a gpio_chip for each bank. The driver assumes that it handles the base set of GPIOs on the system and that it can start its numbering sequence from 0, so any GPIO expanders used with it must dynamically assign GPIO numbers after this driver has finished registering its GPIOs. Does not implement the interrupt-controller portion yet, will be done in a future commit. v2: - change include to use <linux/gpio/driver.h> instead of <linux/gpio.h> - get rid of unnecessary imask member in struct bank - rename GPIO_PER_BANK -> MAX_GPIO_PER_BANK - always have 32 GPIOs per bank and add 'width' member in struct bank to hold actual number of GPIOs in use - mark of_match table as const List-usage-fixed-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Gregory Fong <gregory.0xf0@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-05-28 19:14:05 -07:00
gpio: brcmstb: Add interrupt and wakeup source support Uses the gpiolib irqchip helpers. For this to work, the irq setup function is called once per bank instead of once per device. Note that all known uses of this block have a BCM7120 L2 interrupt controller as a parent. Supports interrupts for all GPIOs. In the IRQ handler, we check for raised IRQs for invalid GPIOs and warn (ratelimited) if they're encountered. Also, several drivers (e.g. gpio-keys) allow for GPIOs to be configured as wakeup sources, and this GPIO controller supports that through a separate interrupt path. The de-facto standard DT property "wakeup-source" is checked, since that indicates whether the GPIO controller hardware can wake. Uses the IRQCHIP_MASK_ON_SUSPEND irq_chip flag because UPG GIO doesn't have any of its own wakeup source configuration. Aside regarding gpiolib irqchip helpers: It wasn't obvious (to me) that you can have multiple chained irqchips and associated IRQ domains for a single parent IRQ, and as long as the xlate function is written correctly, a GPIO IRQ request end up checking the correct domain and will get associated with the correct IRQ. What helps make this clear is to read drivers/gpio/gpiolib-of.c: - of_gpiochip_find_and_xlate() - of_get_named_gpiod_flags() drivers/gpio/gpiolib.c: - gpiochip_find() Signed-off-by: Gregory Fong <gregory.0xf0@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-07-31 18:17:43 -07:00
gpio: Add GPIO support for Broadcom STB SoCs This adds support for the GPIO IP "UPG GIO" used on Broadcom STB SoCs (BCM7XXX and some others). Uses basic_mmio_gpio to instantiate a gpio_chip for each bank. The driver assumes that it handles the base set of GPIOs on the system and that it can start its numbering sequence from 0, so any GPIO expanders used with it must dynamically assign GPIO numbers after this driver has finished registering its GPIOs. Does not implement the interrupt-controller portion yet, will be done in a future commit. v2: - change include to use <linux/gpio/driver.h> instead of <linux/gpio.h> - get rid of unnecessary imask member in struct bank - rename GPIO_PER_BANK -> MAX_GPIO_PER_BANK - always have 32 GPIOs per bank and add 'width' member in struct bank to hold actual number of GPIOs in use - mark of_match table as const List-usage-fixed-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Gregory Fong <gregory.0xf0@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-05-28 19:14:05 -07:00
GPIO: Add support for GPIO on CLPS711X-target platform The CLPS711X CPUs provide some GPIOs for use in the system. This driver provides support for these via gpiolib. Due to platform limitations, driver does not support interrupts, only inputs and outputs. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-10-09 20:05:56 +04:00
GPIO: clps711x: Rewrite driver for using generic GPIO code This patch provides rewritten driver for CLPS711X GPIO which uses generic GPIO code. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Olof Johansson <olof@lixom.net>
2013-04-26 19:47:28 +04:00
gpio: clps711x: Enable driver compilation with COMPILE_TEST This helps increasing build testing coverage. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-12-24 18:08:54 +04:00
GPIO: clps711x: Rewrite driver for using generic GPIO code This patch provides rewritten driver for CLPS711X GPIO which uses generic GPIO code. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Olof Johansson <olof@lixom.net>
2013-04-26 19:47:28 +04:00
GPIO: Add support for GPIO on CLPS711X-target platform The CLPS711X CPUs provide some GPIOs for use in the system. This driver provides support for these via gpiolib. Due to platform limitations, driver does not support interrupts, only inputs and outputs. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-10-09 20:05:56 +04:00
gpio: introduce GPIO_DAVINCI kconfig option The compatible to Davinci GPIO HW block is used by other TI SoCs, like Keystone, where GPIO support is declared as optional. Hence, introduce GPIO_DAVINCI Kconfig option which will allow to enable Davinci GPIO driver for Keystone SoCs when needed. At same time, kept Davinci GPIO driver enabled for Davinci SoCs by default. Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2013-11-21 17:34:36 +02:00
gpio: add a driver for the Synopsys DesignWare APB GPIO block The Synopsys DesignWare block is used in some ARM devices (picoxcell) and can be configured to provide multiple banks of GPIO pins. v12: - Add irq_startup/shutdown - do irq_create_mapping() in probe, irq_find_mapping() in to_irq() - Adjust mappings to show support for 1 gpio per port. - gpio-cells = <1> v11: - Use NULL when checking existence of 'interrupts' property - Bindings descriptions cleanup v10: - in documentation nr-gpio -> nr-gpios v9: - cleanup in dt bindings doc - use of_get_child_count() v8: - remove socfpga.dtsi changes - minor cleanup in devicetree documentation v7: - use irq_generic_chip - support one irq per gpio line or one irq for many - s/bank/port/ and other cleanup v6: - (atull) squash the set of patches - use linear irq domain - build fixes. Original driver was reviewed on v3.2. - Fix setting irq edge type for 'rising' and 'both'. - Support as a loadable module. - Use bgpio_chip's spinlock during register access. - Clean up register names to match spec - s/bank/port/ because register names use the word 'port' - s/nr-gpio/nr-gpios/ - don't get/put the of_node - remove signoffs/acked-by's because of changes - other cleanup v5: - handle sparse bank population correctly v3: - depend on rather than select IRQ_DOMAIN - split IRQ support into a separate patch v2: - use Rob Herring's irqdomain in generic irq chip patches - use reg property to indicate bank index - support irqs on both edges based on LinusW's u300 driver Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Alan Tull <atull@altera.com> Reviewed-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-02-25 17:01:01 -06:00
gpio: Emma Mobile GPIO driver V2 This patch is V2 of the Emma Mobile GPIO driver. 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 Emma Mobile EV2. Each driver instance handles 32 GPIOs with individually maskable IRQs. The driver operates on two I/O memory ranges and the 32 GPIOs are hooked up to two interrupts. In the case of Emma Mobile EV2 this GPIO building block is used as main external interrupt controller hooking up 159 GPIOS as 159 interrupts via 5 driver instances and 10 interrupts to the GIC and the Cortex-A9 Dual. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-05-17 15:22:23 +09:00
emev2: GPIOLIB: Enable support for OF EMEV2 is now a DT platform, however the GPIO driver cannot be used from a DT file since it does not fill out the of_node field in its gpio_chip structure. Signed-off-by: Ian Molton <ian.molton@codethink.co.uk> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-02 16:44:55 +01:00
gpio: Emma Mobile GPIO driver V2 This patch is V2 of the Emma Mobile GPIO driver. 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 Emma Mobile EV2. Each driver instance handles 32 GPIOs with individually maskable IRQs. The driver operates on two I/O memory ranges and the 32 GPIOs are hooked up to two interrupts. In the case of Emma Mobile EV2 this GPIO building block is used as main external interrupt controller hooking up 159 GPIOS as 159 interrupts via 5 driver instances and 10 interrupts to the GIC and the Cortex-A9 Dual. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-05-17 15:22:23 +09:00
gpio/ep93xx: move driver to drivers/gpio The GPIO driver should reside in drivers/gpio. v3: Change Kconfig option to def_bool y v2: Make the Kconfig symbol a silent option, dependent on ARCH_EP93XX Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-01 10:09:19 -07:00
gpio/ep93xx: convert to platform_driver and use basic_mmio_gpio library This converts the gpio-ep93xx driver into a platform_driver and uses the basic_mmio_gpio library. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-08 14:35:33 -07:00
gpio/ep93xx: move driver to drivers/gpio The GPIO driver should reside in drivers/gpio. v3: Change Kconfig option to def_bool y v2: Make the Kconfig symbol a silent option, dependent on ARCH_EP93XX Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-01 10:09:19 -07:00
gpio: add ETRAXFS GPIO driver Add a GPIO driver for the General I/O block on Axis ETRAX FS SoCs. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-06-06 22:30:40 +02:00
gpio: etraxfs: add interrupt support On ETRAX FS, all pins on the first port (and only the first port) have interrupt support. On ARTPEC-3, all pins on all ports have interrupt support. However, there are only eight interrupts. Each of the interrupts is associated with a group of pins and for each interrupt the one pin from the group which will trigger it can be selected. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-07-31 14:48:57 +02:00
gpio: add ETRAXFS GPIO driver Add a GPIO driver for the General I/O block on Axis ETRAX FS SoCs. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-06-06 22:30:40 +02:00
gpio: arrange Kconfig symbols alphabetically This rearranges the GPIO drivers Kconfig symbols alphabetically as the top comment in the file already states they should be. No functional changes whatsoever. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 10:08:56 +02:00
gpio: add lpc18xx gpio driver Driver for the GPIO block found on NXP LPC18xx/43xx devices. Signed-off-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-05-02 23:11:34 +02:00
gpio: arrange Kconfig symbols alphabetically This rearranges the GPIO drivers Kconfig symbols alphabetically as the top comment in the file already states they should be. No functional changes whatsoever. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 10:08:56 +02:00
gpio: Add Fujitsu MB86S7x GPIO driver Driver for Fujitsu MB86S7x SoCs that have a memory mapped GPIO controller. Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> Signed-off-by: Andy Green <andy.green@linaro.org> Signed-off-by: Vincent Yang <Vincent.Yang@tw.fujitsu.com> Signed-off-by: Tetsuya Nuriya <nuriya.tetsuya@jp.fujitsu.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-01-19 18:35:53 +08:00
gpio: New driver for LSI ZEVIO SoCs This driver supports the GPIO controller found in LSI ZEVIO SoCs. It has been successfully tested on a TI nspire CX calculator. Signed-off-by: Fabian Vogt <fabian@ritter-vogt.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-02-24 20:54:58 +01:00
GPIO: MIPS: lantiq: move gpio-stp and gpio-ebu to the subsystem folder Move the 2 drivers from arch/mips/lantiq/xway/ to the subsystem and make them buildable. The following 2 patches will convert the drivers to OF. Signed-off-by: John Crispin <blogic@openwrt.org> Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Acked-by: Grant Likely <grant.likely@secretlab.ca> Patchwork: https://patchwork.linux-mips.org/patch/3838/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-05-11 18:48:39 +02:00
gpio: Add MOXA ART GPIO driver Add GPIO driver for MOXA ART SoCs. Signed-off-by: Jonas Jensen <jonas.jensen@gmail.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-11-29 12:11:34 +01:00
gpio: moxart: convert to use basic mmio gpio library This patch converts MOXART GPIO driver to use basic_mmio_gpio generic library. Signed-off-by: Kamlakant Patel <kamlakant.patel@linaro.org> Acked-by: Alexandre Courbot <acourbot@nvidia.com> Tested-by: Jonas Jensen <jonas.jensen@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-12-01 17:39:34 +05:30
gpio: Add MOXA ART GPIO driver Add GPIO driver for MOXA ART SoCs. Signed-off-by: Jonas Jensen <jonas.jensen@gmail.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-11-29 12:11:34 +01:00
gpio: Move mpc5200 gpio driver to drivers/gpio GPIO drivers are getting consolidated into drivers/gpio. While at it, change the driver name to mpc5200-gpio* to avoid collisions. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-06 11:54:19 -06:00
gpio: move mpc8xxx/512x gpio driver to drivers/gpio Move the driver to the place where it is expected to be nowadays. Also rename its CONFIG-name to match the rest and adapt the defconfigs. Finally, move selection of REQUIRE_GPIOLIB or WANTS_OPTIONAL_GPIOLIB to the platforms, because this option is per-platform and not per-driver. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Anatolij Gustschin <agust@denx.de> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Anatolij Gustschin <agust@denx.de>
2011-09-21 12:49:20 +02:00
gpio: introduce gpio-mvebu driver for Marvell SoCs This driver aims at replacing the arch/arm/plat-orion/gpio.c driver, and is designed to be compatible with all Marvell EBU SoCs: Orion, Kirkwood, Dove, Armada 370/XP and Discovery. It has been successfully tested on Dove and Armada XP at the moment. Compared to the plat-orion driver, this new driver has the following added benefits: *) Support for Armada 370 and Armada XP *) It is integrated with the mvebu pinctrl driver so that GPIO pins are properly muxed, and the GPIO driver knows which GPIO pins are output-only or input-only. *) Properly placed in drivers/gpio *) More extensible mechanism to support platform differences. The plat-orion driver uses a simple mask-offset DT property, which works fine for Discovery MV78200 but not for Armada XP. The new driver uses different compatible strings to identify the different variants of the GPIO controllers. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Linus Walleij <linus.walleij@stericsson.com> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Gregory Clement <gregory.clement@free-electrons.com> Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2012-09-19 22:52:58 +02:00
GPIO: mvebu: Allow all plat-orion platforms. Kirkwood & Dove can also use this driver, so expand the scope to include all platform orion devices. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2012-11-17 17:00:43 +01:00
gpio/mvebu-gpio: Make mvebu-gpio depend on OF_CONFIG When building without device tree support (for the mv78x00 SoCs for example), the build failed because of_irq_count is undeclared. However mvebu-gpio is not designed to build without device tree support. So make it depends on OF_CONFIG, remove the #ifdef OF_CONFIG line and the platform_device_id. Tested on RD-78x00-mASA, DB-78460-BP, DB-88F6710-BP-DDR3, DB-MV784MP-GP, Mirabox and OpenBlocks AX3. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-12-19 12:31:11 +01:00
gpio: introduce gpio-mvebu driver for Marvell SoCs This driver aims at replacing the arch/arm/plat-orion/gpio.c driver, and is designed to be compatible with all Marvell EBU SoCs: Orion, Kirkwood, Dove, Armada 370/XP and Discovery. It has been successfully tested on Dove and Armada XP at the moment. Compared to the plat-orion driver, this new driver has the following added benefits: *) Support for Armada 370 and Armada XP *) It is integrated with the mvebu pinctrl driver so that GPIO pins are properly muxed, and the GPIO driver knows which GPIO pins are output-only or input-only. *) Properly placed in drivers/gpio *) More extensible mechanism to support platform differences. The plat-orion driver uses a simple mask-offset DT property, which works fine for Discovery MV78200 but not for Armada XP. The new driver uses different compatible strings to identify the different variants of the GPIO controllers. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Linus Walleij <linus.walleij@stericsson.com> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Gregory Clement <gregory.clement@free-electrons.com> Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2012-09-19 22:52:58 +02:00
gpio/mxc: Move Freescale MXC gpio driver to drivers/gpio GPIO drivers are getting moved to drivers/gpio for cleanup and consolidation. This patch moves the plat-mxc driver. Follow up patches will clean it up and make it a fine upstanding gpio driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-06 00:07:54 +08:00
gpio: reorganize drivers Sort the gpio makefile and enforce the naming convention gpio-*.c for gpio drivers. v2: cleaned up filenames in Kconfig and comment blocks v3: fixup use of BASIC_MMIO to GENERIC_GPIO for mxc Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-04 18:38:28 -06:00
gpio/mxc: convert gpio-mxc to use generic irq chip The patch converts gpio-mxc driver to use generic irq chip. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-07 16:25:37 +08:00
gpio: reorganize drivers Sort the gpio makefile and enforce the naming convention gpio-*.c for gpio drivers. v2: cleaned up filenames in Kconfig and comment blocks v3: fixup use of BASIC_MMIO to GENERIC_GPIO for mxc Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-04 18:38:28 -06:00
gpio/mxs: convert gpio-mxs to use basic_mmio_gpio library The gpio-mxs controller complies with basic_mmio_gpio library. This patch converts the driver to use the library. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-06 22:31:29 +08:00
gpio/mxs: convert gpio-mxs to use generic irq chip The patch converts gpio-mxs driver to use generic irq chip. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-07 22:00:54 +08:00
gpio/mxc: Move Freescale MXC gpio driver to drivers/gpio GPIO drivers are getting moved to drivers/gpio for cleanup and consolidation. This patch moves the plat-mxc driver. Follow up patches will clean it up and make it a fine upstanding gpio driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-06 00:07:54 +08:00
gpio MIPS/OCTEON: Add a driver for OCTEON's on-chip GPIO pins. The SOCs in the OCTEON family have 16 (or in some cases 20) on-chip GPIO pins, this driver handles them all. Configuring the pins as interrupt sources is handled elsewhere (OCTEON's irq handling code). Signed-off-by: David Daney <david.daney@cavium.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/5633/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-07-29 14:29:10 -07:00
gpio: omap: add a GPIO_OMAP option instead of using ARCH_OMAP The ARCH_OMAP config option was used to built the GPIO OMAP driver but this is not consistent with the rest of the GPIO drivers that have their own Kconfig option. Also, this make it harder to add dependencies or reverse dependencies (i.e: select) since that would mean touching the sub-arch config option. So is better to add a boolean Kconfig option for this driver that defaults to true if ARCH_OMAP is enabled. Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-06 16:58:15 +02:00
gpio: omap: Allow building as a loadable module We currently get all kinds of errors building the omap gpio driver as a module starting with: undefined reference to `omap2_gpio_resume_after_idle' undefined reference to `omap2_gpio_prepare_for_idle' ... Let's fix the issue by adding inline functions to the header. Note that we can now also remove the two unused functions for omap_set_gpio_debounce and omap_set_gpio_debounce_time. Then doing rmmod on the module produces further warnings because of missing exit related functions. Let's add those. And finally, we can make the Kconfig entry just a tristate option that's selected for omaps. Cc: Javier Martinez Canillas <javier@dowhile0.org> Cc: Kevin Hilman <khilman@deeprootsystems.com> Cc: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Reviewed-by: Grygorii Strashko <grygorii.strashko@linaro.org> Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-23 16:56:22 -07:00
gpio: omap: add a GPIO_OMAP option instead of using ARCH_OMAP The ARCH_OMAP config option was used to built the GPIO OMAP driver but this is not consistent with the rest of the GPIO drivers that have their own Kconfig option. Also, this make it harder to add dependencies or reverse dependencies (i.e: select) since that would mean touching the sub-arch config option. So is better to add a boolean Kconfig option for this driver that defaults to true if ARCH_OMAP is enabled. Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-06 16:58:15 +02:00
gpio: always enable GPIO_OMAP on ARCH_OMAP Commit 4df42de9d3e "gpio: omap: add a GPIO_OMAP option instead of using ARCH_OMAP" made it possible to build OMAP kernels without the GPIO driver, which at least on OMAP2 and OMAP3 causes build errors because of functions used by the platform power management code: arch/arm/mach-omap2/built-in.o: In function `omap_sram_idle': arch/arm/mach-omap2/pm24xx.c:129: undefined reference to `omap2_gpio_prepare_for_idle' arch/arm/mach-omap2/pm24xx.c:129: undefined reference to `omap2_gpio_resume_after_idle' We presumably always want the GPIO driver on OMAP, so this adds a slightly broader dependency and only allows disabling the driver only when no OMAP2PLUS platform is selected. However, it seems entirely reasonable to include the driver in build tests on other platforms, so we should also allow building it for COMPILE_TEST builds and select the required GENERIC_IRQ_CHIP that may not already be enabled on other platforms. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-28 11:07:03 +02:00
gpio: omap: convert driver to use gpiolib irqchip Converts the GPIO OMAP driver to register its chained irq handler and irqchip using the helpers in the gpiolib core. Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-06 16:58:16 +02:00
gpio: omap: add a GPIO_OMAP option instead of using ARCH_OMAP The ARCH_OMAP config option was used to built the GPIO OMAP driver but this is not consistent with the rest of the GPIO drivers that have their own Kconfig option. Also, this make it harder to add dependencies or reverse dependencies (i.e: select) since that would mean touching the sub-arch config option. So is better to add a boolean Kconfig option for this driver that defaults to true if ARCH_OMAP is enabled. Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-06 16:58:15 +02:00
gpio: driver for PrimeCell PL061 GPIO controller This is a driver for the ARM PrimeCell PL061 GPIO AMBA peripheral. The driver is implemented using the gpiolib framework. This driver also includes support for the use of the PL061 as an interrupt controller (secondary). Signed-off-by: Baruch Siach <baruch@tkos.co.il> Cc: David Brownell <david-b@pacbell.net> Acked-by: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18 16:48:58 -07:00
gpio: pl061: don't depend on CONFIG_ARM The pl061 driver has no real dependency on ARM, so remove the kconfig dependency. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-11-05 21:27:02 -06:00
gpio: pl061: Select IRQ_DOMAIN rather than GENERIC_IRQ_CHIP commit f1f70479e999 "gpio: pl061: support irqdomain" drops the support of irq generic chip and use irqdomain instead. Thus fixes the dependency by selecting IRQ_DOMAIN rather than GENERIC_IRQ_CHIP. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-02-04 20:39:01 +08:00
gpio: pl061: convert driver to use gpiolib irqchip This converts the PL061 driver to register its chained irq handler and irqchip using the helpers in the gpiolib core. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-03-25 10:42:35 +01:00
gpio: driver for PrimeCell PL061 GPIO controller This is a driver for the ARM PrimeCell PL061 GPIO AMBA peripheral. The driver is implemented using the gpiolib framework. This driver also includes support for the use of the PL061 as an interrupt controller (secondary). Signed-off-by: Baruch Siach <baruch@tkos.co.il> Cc: David Brownell <david-b@pacbell.net> Acked-by: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18 16:48:58 -07:00
ARM: pxa: change gpio to platform device Remove most gpio macros and change gpio driver to platform driver. Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
2011-10-17 20:37:52 +08:00
gpio: Renesas R-Car GPIO driver V3 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>
2013-03-13 20:32:13 +09:00
gpio: rcar: GPIO_RCAR doesn't relate to ARM 8cd1470("gpio: rcar: Add r8a7795 (R-Car H3) support") added GPIO support for r8a7795. r8a7795 based on CONFIG_ARM64. OTOH, GPIO_RCAR driver can be compiled fine on non-ARM. This patch removed ARM dependency for it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-08-25 09:12:43 +00:00
gpio: rcar: Switch to use gpiolib irqchip helpers 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>
2015-01-12 11:07:59 +01:00
gpio: Renesas R-Car GPIO driver V3 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>
2013-03-13 20:32:13 +09:00
ARM: SAMSUNG: Introduce GPIO_SAMSUNG Kconfig entry This patch adds Kconfig entry that selects whether legacy Samsung GPIO driver should be built or not. For platforms that support only DT based boot, the new pinctrl driver is used and so the old one is not needed. Cc: Grant Likely <grant.likely@linaro.org> Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-06-19 01:22:20 +09:00
gpio: SPEAr: add spi chipselect control driver SPEAr platform provides a provision to control chipselects of ARM PL022 Prime Cell spi controller through its system registers, which otherwise remains under PL022 control which some protocols do not want. This commit intends to provide the spi chipselect control in software over gpiolib interface. spi chip drivers can use the exported gpiolib interface to define their chipselect through DT or platform data. Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com> Reviewed-by: Vipin Kumar <vipin.kumar@st.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-11-16 10:45:25 +05:30
gpio: Add STA2X11 GPIO block This introduces 128 gpio bits (for each PCI device installed) with working interrupt support. Signed-off-by: Alessandro Rubini <rubini@gnudd.com> Acked-by: Giancarlo Asnaghi <giancarlo.asnaghi@st.com> Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-04-12 10:48:55 +02:00
gpio: move MFD GPIO drivers under their own comment Get rid of AC97, MODULbus and other weird subheadings for GPIO drivers. Move all MFD drivers out of I2C etc and in under the MFD comment. This is too weird as it is and makes no sense, if the dependent parent driver is MFD, group these as MFD GPIO drivers. Alphabetize and move this comment group inbetween "I2C" and "PCI" to also have the groups in alphabetic order. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:51:23 +02:00
gpio: Driver for SYSCON-based GPIOs SYSCON driver was designed for using memory areas (registers) that are used in several subsystems. There are systems (CPUs) which use bits in one register for various purposes and thus should be handled by various kernel subsystems. This driver allows you to use the individual SYSCON bits as GPIOs. ARM CLPS711X SYSFLG1 input lines has been added as first user of this driver. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-03-11 21:55:14 +04:00
gpio: arrange Kconfig symbols alphabetically This rearranges the GPIO drivers Kconfig symbols alphabetically as the top comment in the file already states they should be. No functional changes whatsoever. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 10:08:56 +02:00
gpio-tz1090: add TZ1090 gpio driver Add a GPIO driver for the main GPIOs found in the TZ1090 (Comet) SoC. This doesn't include low-power GPIOs as they're controlled separately via the Powerdown Controller (PDC) registers. The driver is instantiated by device tree and supports interrupts for all GPIOs. Changes in v4: - fix typos in DT bindings compatible properties - reference Documentation/devicetree/bindings/gpio/gpio.txt in gpio-ranges description in DT bindings - fix gpio-ranges examples in DT bindings (it must now have 3 cells) - gpio-tz1090: use of_property_read_u32 instead of of_get_property Changes in v3: - separated from irq-imgpdc and removed arch/metag changes to allow these patches to go upstream separately via the pinctrl[/gpio] trees (particularly the pinctrl drivers depend on the new pinconf DT bindings). - some s/unsigned/unsigned int/. - some s/unsigned int/bool/ and use of BIT(). - gpio-tz1090*: refer to <dt-bindings/gpio/gpio.h> and <dt-bindings/interrupt-controller/irq.h> flags in bindings. - gpio-tz1090*: move initcall from postcore to subsys. - gpio-tz1090: add REG_ prefix to some constants for consistency. - gpio-tz1090: add comment to explain tz1090_gpio_irq_next_edge cunningness. Changes in v2: - gpio-tz1090: remove references to Linux flags in dt bindings - gpio-tz1090: make use of BIT() from linux/bitops.h - gpio-tz1090: make register accessors inline to match pinctrl - gpio-tz1090: update gpio-ranges to use 3 cells after recent ABI breakage Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Rob Landley <rob@landley.net> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-doc@vger.kernel.org Cc: devicetree-discuss@lists.ozlabs.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-06-25 15:27:43 +01:00
gpio-tz1090: convert to use generic irqchip Convert gpio-tz1090 driver to use generic irqchips. This allows the irq_ack, irq_mask, and irq_unmask callbacks and associated helper functions to be removed. Also switch to using irq_setup_alt_chip() in the irq_set_type callback instead of using __irq_set_handler_locked(). Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Grant Likely <grant.likely@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-06-25 15:27:45 +01:00
gpio-tz1090: add TZ1090 gpio driver Add a GPIO driver for the main GPIOs found in the TZ1090 (Comet) SoC. This doesn't include low-power GPIOs as they're controlled separately via the Powerdown Controller (PDC) registers. The driver is instantiated by device tree and supports interrupts for all GPIOs. Changes in v4: - fix typos in DT bindings compatible properties - reference Documentation/devicetree/bindings/gpio/gpio.txt in gpio-ranges description in DT bindings - fix gpio-ranges examples in DT bindings (it must now have 3 cells) - gpio-tz1090: use of_property_read_u32 instead of of_get_property Changes in v3: - separated from irq-imgpdc and removed arch/metag changes to allow these patches to go upstream separately via the pinctrl[/gpio] trees (particularly the pinctrl drivers depend on the new pinconf DT bindings). - some s/unsigned/unsigned int/. - some s/unsigned int/bool/ and use of BIT(). - gpio-tz1090*: refer to <dt-bindings/gpio/gpio.h> and <dt-bindings/interrupt-controller/irq.h> flags in bindings. - gpio-tz1090*: move initcall from postcore to subsys. - gpio-tz1090: add REG_ prefix to some constants for consistency. - gpio-tz1090: add comment to explain tz1090_gpio_irq_next_edge cunningness. Changes in v2: - gpio-tz1090: remove references to Linux flags in dt bindings - gpio-tz1090: make use of BIT() from linux/bitops.h - gpio-tz1090: make register accessors inline to match pinctrl - gpio-tz1090: update gpio-ranges to use 3 cells after recent ABI breakage Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Rob Landley <rob@landley.net> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-doc@vger.kernel.org Cc: devicetree-discuss@lists.ozlabs.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-06-25 15:27:43 +01:00
gpio-tz1090-pdc: add TZ1090 PDC gpio driver Add a GPIO driver for the low-power Powerdown Controller GPIOs in the TZ1090 SoC. The driver is instantiated by device tree and supports interrupts for the SysWake GPIOs only. Changes in v4: - fix typos in DT bindings compatible properties - reference Documentation/devicetree/bindings/gpio/gpio.txt in gpio-ranges description in DT bindings - fix gpio-ranges examples in DT bindings (it must now have 3 cells) Changes in v3: - separated from irq-imgpdc and removed arch/metag changes to allow these patches to go upstream separately via the pinctrl[/gpio] trees (particularly the pinctrl drivers depend on the new pinconf DT bindings). - some s/unsigned/unsigned int/. - gpio-tz1090*: refer to <dt-bindings/gpio/gpio.h> and <dt-bindings/interrupt-controller/irq.h> flags in bindings. - gpio-tz1090*: move initcall from postcore to subsys. Changes in v2: - gpio-tz1090-pdc: remove references to Linux flags in dt bindings - gpio-tz1090-pdc: make use of BIT() from linux/bitops.h - gpio-tz1090-pdc: make register accessors inline to match pinctrl - gpio-tz1090-pdc: update gpio-ranges to use 3 cells after recent ABI breakage Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Rob Landley <rob@landley.net> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-doc@vger.kernel.org Cc: devicetree-discuss@lists.ozlabs.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-06-25 15:27:44 +01:00
gpio: vf610: add gpiolib/IRQ chip driver for Vybrid Add a gpiolib and IRQ chip driver for Vybrid ARM SoC using the Vybrid's GPIO and PORT module. The driver is instanced once per each GPIO/PORT module pair and handles 32 GPIO's. Signed-off-by: Stefan Agner <stefan@agner.ch> Acked-by: Shawn Guo <shawn.guo@freescale.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-10-16 21:47:58 +02:00
gpio: arrange Kconfig symbols alphabetically This rearranges the GPIO drivers Kconfig symbols alphabetically as the top comment in the file already states they should be. No functional changes whatsoever. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 10:08:56 +02:00
gpio: Add APM X-Gene SoC GPIO controller support Add APM X-Gene SoC gpio controller driver. Signed-off-by: Feng Kan <fkan@apm.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-07-31 12:03:25 -07:00
gpio: Add APM X-Gene standby GPIO controller driver Driver for standby GPIO controller of APM X-Gene SoCs on arm64. Signed-off-by: Y Vo <yvo@apm.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-01-16 14:34:19 +07:00
GPIO: add new Xilinx driver for powerpc This driver supports the Xilinx XPS GPIO IP core which has the typical GPIO features. Signed-off-by: Kiran Sutariya <kirans@xilinx.com> Signed-off-by: John Linn <john.linn@xilinx.com> Cc: David Brownell <david-b@pacbell.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kumar Gala <galak@gate.crashing.org> Cc: "Grant Likely" <grant.likely@secretlab.ca> Cc: <avorontsov@ru.mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-12 13:25:38 -08:00
gpio/xilinx: Add support for X86 Arch Core can be accessed via PCIe on X86 platform. This patch also allows the driver to be used as module. Acked-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-12-17 16:51:10 +01:00
gpio: xilinx: Drop architecture dependencies The driver does not have any real architecture dependencies. To avoid listing each architecture that might use this driver on some FPGA-enabled platform, drop these dependencies. Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com> Acked-by: Moritz Fischer <moritz.fischer@ettus.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-10-22 21:51:18 -07:00
GPIO: add new Xilinx driver for powerpc This driver supports the Xilinx XPS GPIO IP core which has the typical GPIO features. Signed-off-by: Kiran Sutariya <kirans@xilinx.com> Signed-off-by: John Linn <john.linn@xilinx.com> Cc: David Brownell <david-b@pacbell.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kumar Gala <galak@gate.crashing.org> Cc: "Grant Likely" <grant.likely@secretlab.ca> Cc: <avorontsov@ru.mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-12 13:25:38 -08:00
gpio: xlp: GPIO controller for Netlogic XLP SoCs Add GPIO controller driver for Netlogic XLP MIPS64 SOCs. This driver is instantiated by device tree and supports interrupts for GPIOs. Signed-off-by: Kamlakant Patel <kamlakant.patel@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-28 20:10:45 +05:30
gpio: xlp: Convert to use gpiolib irqchip helpers commit "325f0a (MIPS: Netlogic: Use chip_data for irq_chip methods)" Updates "mips/netlogic/common/irq.c" to use chip_data to store interrupt controller data pointer. Before this commit handler_data was used to store interrupt controller data which caused errors while using gpiochip_set_chained_irqchip. Update XLP GPIO driver to use the gpiolib irqchip helpers. And add missing depends on OF_GPIO in Kconfig. Signed-off-by: Kamlakant Patel <kamlakant.patel@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-10-15 18:23:32 +05:30
gpio: xlp: GPIO controller for Netlogic XLP SoCs Add GPIO controller driver for Netlogic XLP MIPS64 SOCs. This driver is instantiated by device tree and supports interrupts for GPIOs. Signed-off-by: Kamlakant Patel <kamlakant.patel@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-28 20:10:45 +05:30
gpio: driver for Xtensa GPIO32 GPIO32 is a standard optional extension to the Xtensa architecture core that provides preconfigured output and input ports for intra SoC signaling. The GPIO32 option is implemented as 32bit Tensilica Instruction Extension (TIE) output state called EXPSTATE, and 32bit input wire called IMPWIRE. This driver treats input and output states as two distinct devices. v3: * Use BUG() in xtensa_impwire_set_value() to indicate that it should never be called (Linus Walleij) v2: * Address the comments of Linus Walleij: - Add a few comments - Expand commit log message - Use the BIT() macro for bit offsets - Rewrite CPENABLE handling as static inlines - Use device_initcall() * Depend on !SMP for reason explained in the comments (Marc Gauthier) * Use XCHAL_CP_ID_XTIOP to enable/disable GPIO32 only Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-12-12 11:18:41 +02:00
gpio: xtensa: depend on HAVE_XTENSA_GPIO32 Prevent build failure when the selected variant does not support GPIO32. Acked-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-12-18 09:10:29 +02:00
gpio: driver for Xtensa GPIO32 GPIO32 is a standard optional extension to the Xtensa architecture core that provides preconfigured output and input ports for intra SoC signaling. The GPIO32 option is implemented as 32bit Tensilica Instruction Extension (TIE) output state called EXPSTATE, and 32bit input wire called IMPWIRE. This driver treats input and output states as two distinct devices. v3: * Use BUG() in xtensa_impwire_set_value() to indicate that it should never be called (Linus Walleij) v2: * Address the comments of Linus Walleij: - Add a few comments - Expand commit log message - Use the BIT() macro for bit offsets - Rewrite CPENABLE handling as static inlines - Use device_initcall() * Depend on !SMP for reason explained in the comments (Marc Gauthier) * Use XCHAL_CP_ID_XTIOP to enable/disable GPIO32 only Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-12-12 11:18:41 +02:00
gpio: arrange Kconfig symbols alphabetically This rearranges the GPIO drivers Kconfig symbols alphabetically as the top comment in the file already states they should be. No functional changes whatsoever. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 10:08:56 +02:00
MIPS: Update VR41xx GPIO driver to use gpiolib Signed-off-by: Yoichi Yuasa <yyuasa@linux.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-29 11:11:05 +09:00
gpio: arrange Kconfig symbols alphabetically This rearranges the GPIO drivers Kconfig symbols alphabetically as the top comment in the file already states they should be. No functional changes whatsoever. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 10:08:56 +02:00
MIPS: Update VR41xx GPIO driver to use gpiolib Signed-off-by: Yoichi Yuasa <yyuasa@linux.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-29 11:11:05 +09:00
gpio: arrange Kconfig symbols alphabetically This rearranges the GPIO drivers Kconfig symbols alphabetically as the top comment in the file already states they should be. No functional changes whatsoever. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 10:08:56 +02:00
gpio: Added support to Zynq Ultrascale+ MPSoC Added support to Zynq Ultrascale+ MPSoC on the existing zynq gpio driver. Signed-off-by: Anurag Kumar Vulisha <anuragku@xilinx.com> Acked-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-06-04 17:40:32 +05:30
gpio: lynxpoint: Convert to use gpiolib irqchip Instead of open-coding irqchip handling in the driver we can take advantage of the new irqchip helpers provided by the gpiolib core. While doing this we also make sure that we call gpiochip_irqchip_add() after the gpiochip itself is registered as required. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-07-25 09:54:46 +03:00
gpio/lynxpoint: add chipset gpio driver. 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>
2012-12-12 17:42:38 +02:00
gpio: arrange Kconfig symbols alphabetically This rearranges the GPIO drivers Kconfig symbols alphabetically as the top comment in the file already states they should be. No functional changes whatsoever. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 10:08:56 +02:00
gpio/lynxpoint: add chipset gpio driver. 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>
2012-12-12 17:42:38 +02:00
gpio: fix up SPI submenu - Relax dependencies on SPI_MASTER for drivers in the SPI menu that already has this dependency. - Move out the expander that would be hidden for I2C access if SPI_MASTER was not selected. Tentatively create a separate menu for this. - Move the ZX SoC driver to memory-mapped drivers, this must be a mistake and only worked because the system has an SPI master enabled at the same time. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-01 10:50:19 +01:00
gpio: split GPIO drivers in submenus Create Kconfig submenus for memory mapped, I2C, MFD, PCI, SPI and USB GPIO drivers to help navigate the forest of drivers in this subsystem. The I2C, SPI and USB menus get dependencies so we don't have to see them unless we have the required subsystem enabled in the first place. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 15:11:16 +02:00
gpio: group port-mapped I/O drivers in a menu Create a Kconfig submenu for drivers using X86 port-mapped I/O and depend on X86 for this. Suggested-by: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: William Breathitt Gray <vilhelm.gray@gmail.com> Cc: Andreas Bofjall <andreas@gazonk.org> Cc: Diego Elio Pettenò <flameeyes@flameeyes.eu> Cc: Daniel Krueger <daniel.krueger@systec-electronic.com> Cc: Bruno Randolf <br1@einfach.org> Cc: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: Simon Guinot <simon.guinot@sequanux.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-10-30 10:32:19 +01:00
gpio: drop surplus X86 dependencies Port-mapped I/O depends on X86 already, so individual drivers need not specify this dependency. Suggested-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-01 10:39:07 +01:00
gpio: group port-mapped I/O drivers in a menu Create a Kconfig submenu for drivers using X86 port-mapped I/O and depend on X86 for this. Suggested-by: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: William Breathitt Gray <vilhelm.gray@gmail.com> Cc: Andreas Bofjall <andreas@gazonk.org> Cc: Diego Elio Pettenò <flameeyes@flameeyes.eu> Cc: Daniel Krueger <daniel.krueger@systec-electronic.com> Cc: Bruno Randolf <br1@einfach.org> Cc: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: Simon Guinot <simon.guinot@sequanux.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-10-30 10:32:19 +01:00
gpio: drop surplus X86 dependencies Port-mapped I/O depends on X86 already, so individual drivers need not specify this dependency. Suggested-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-01 10:39:07 +01:00
gpio: group port-mapped I/O drivers in a menu Create a Kconfig submenu for drivers using X86 port-mapped I/O and depend on X86 for this. Suggested-by: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: William Breathitt Gray <vilhelm.gray@gmail.com> Cc: Andreas Bofjall <andreas@gazonk.org> Cc: Diego Elio Pettenò <flameeyes@flameeyes.eu> Cc: Daniel Krueger <daniel.krueger@systec-electronic.com> Cc: Bruno Randolf <br1@einfach.org> Cc: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: Simon Guinot <simon.guinot@sequanux.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-10-30 10:32:19 +01:00
gpio: split GPIO drivers in submenus Create Kconfig submenus for memory mapped, I2C, MFD, PCI, SPI and USB GPIO drivers to help navigate the forest of drivers in this subsystem. The I2C, SPI and USB menus get dependencies so we don't have to see them unless we have the required subsystem enabled in the first place. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 15:11:16 +02:00
gpiolib: add drivers/gpio directory Add an empty drivers/gpio directory for gpiolib infrastructure and GPIO expanders. It will be populated by later patches. This won't be the only place to hold such gpio_chip code. Many external chips add a few GPIOs as secondary functionality (such as MFD drivers) and platform code frequently needs to closely integrate GPIO and IRQ support. This is placed *early* in the build/link sequence since it's common for other drivers to depend on GPIOs to do their work, so they must be initialized early in the device_initcall() sequence. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:17 -08:00
gpio: arrange I2C Kconfig symbols alphabetically Rearrange the I2C GPIO expanders in alphabetic order as already indicated by the comment in the file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:14:40 +02:00
gpio: grgpio: Add device driver for GRGPIO cores This driver supports GRGPIO gpio cores available in the GRLIB VHDL IP core library from Aeroflex Gaisler. Signed-off-by: Andreas Larsson <andreas@gaisler.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-04-17 14:36:50 +02:00
gpio: arrange I2C Kconfig symbols alphabetically Rearrange the I2C GPIO expanders in alphabetic order as already indicated by the comment in the file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:14:40 +02:00
gpio: grgpio: Add device driver for GRGPIO cores This driver supports GRGPIO gpio cores available in the GRLIB VHDL IP core library from Aeroflex Gaisler. Signed-off-by: Andreas Larsson <andreas@gaisler.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-04-17 14:36:50 +02:00
gpio: arrange I2C Kconfig symbols alphabetically Rearrange the I2C GPIO expanders in alphabetic order as already indicated by the comment in the file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:14:40 +02:00
gpiolib: Add support for Wolfson Microelectronics Arizona class devices The Arizona class devices provide some GPIOs for use in the system. This driver provides support for these via gpiolib. Currently interrupts are not supported, normally the GPIOs are outputs only. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> [Fold in WM5110 support patch] Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-06-23 13:29:25 +01:00
gpio: arrange I2C Kconfig symbols alphabetically Rearrange the I2C GPIO expanders in alphabetic order as already indicated by the comment in the file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:14:40 +02:00
gpiolib: Add support for Wolfson Microelectronics Arizona class devices The Arizona class devices provide some GPIOs for use in the system. This driver provides support for these via gpiolib. Currently interrupts are not supported, normally the GPIOs are outputs only. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> [Fold in WM5110 support patch] Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-06-23 13:29:25 +01:00
gpio: arrange I2C Kconfig symbols alphabetically Rearrange the I2C GPIO expanders in alphabetic order as already indicated by the comment in the file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:14:40 +02:00
gpio: drop surplus I2C dependencies The I2C expander menu already depends on I2C, drop subdependecies on individual drivers. Keep the instances of depends on I2C=y though, so these are still restricted to the compiled-in case. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-01 10:43:16 +01:00
gpio: Add support for Intel Crystal Cove PMIC Devices based on Intel SoC products such as Baytrail have a Power Management IC. In the PMIC there are subsystems for voltage regulation, A/D conversion, GPIO and PWMs. The PMIC in Baytrail-T platform is called Crystal Cove. This patch adds support for the GPIO function in Crystal Cove. Signed-off-by: Yang, Bin <bin.yang@intel.com> Signed-off-by: Zhu, Lejun <lejun.zhu@linux.intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-06-03 13:26:04 +08:00
gpio: arrange I2C Kconfig symbols alphabetically Rearrange the I2C GPIO expanders in alphabetic order as already indicated by the comment in the file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:14:40 +02:00
gpio: add LP3943 I2C GPIO expander driver This is one of LP3943 MFD driver. LP3943 is configurable as a GPIO expander, up to 16 GPIOs. * Application note: how to configure LP3943 as a GPIO expander http://www.ti.com/lit/an/snva287a/snva287a.pdf * Supported GPIO controller operations request, free, direction_input, direction_output, get and set * GPIO direction register not supported LP3943 doesn't have the GPIO direction register. It only provides input and output status registers. So, private data for the direction should be handled manually. This variable is updated whenever the direction is changed and used in 'get' operation. * Pin assignment A driver data, 'pin_used' is checked when a GPIO is requested. If the GPIO is already assigned, then returns as failure. If the GPIO is available, 'pin_used' is set. When the GPIO is not used anymore, then it is cleared. It is defined as unsigned long type for atomic bit operation APIs, but only LSB 16bits are used because LP3943 has 16 outputs. Signed-off-by: Milo Kim <milo.kim@ti.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-12-06 11:18:42 +09:00
gpio: add driver for MAX7300 I2C GPIO extender Add the MAX7300-I2C variant of the MAX7301-SPI version. Both chips share the same core logic, so the generic part of the in-kernel SPI-driver is refactored into a generic part. The I2C and SPI specific funtions are then wrapped into seperate drivers picking up the generic part. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Juergen Beisert <j.beisert@pengutronix.de> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Jean Delvare <khali@linux-fr.org> Cc: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-05 13:44:33 -08:00
gpio: max7300: Fix trivial typo in Kconfig help text max7301 is controlled through SPI interface which means another driver. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-19 14:25:48 +08:00
gpio: add driver for MAX7300 I2C GPIO extender Add the MAX7300-I2C variant of the MAX7301-SPI version. Both chips share the same core logic, so the generic part of the in-kernel SPI-driver is refactored into a generic part. The I2C and SPI specific funtions are then wrapped into seperate drivers picking up the generic part. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Juergen Beisert <j.beisert@pengutronix.de> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Jean Delvare <khali@linux-fr.org> Cc: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-05 13:44:33 -08:00
gpio: max732x driver This adds a driver supporting a family of I2C port expanders from Maxim, which includes the MAX7319 and MAX7320-7327 chips. [dbrownell@users.sourceforge.net: minor fixes] Signed-off-by: Jack Ren <jack.ren@marvell.com> Signed-off-by: Eric Miao <eric.miao@marvell.com> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 01:46:14 -07:00
gpio: add interrupt handling capability to max732x Most of the GPIO expanders supported by the max732x driver have interrupt generation capability by reporting changes on input pins through an INT# pin. This patch implements the irq_chip functionnality (edge detection only). Signed-off-by: Marc Zyngier <maz@misterjones.org> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Jebediah Huang <jebediah.huang@gmail.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-26 14:42:16 -07:00
Remove GENERIC_HARDIRQ config option After the last architecture switched to generic hard irqs the config options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code for !CONFIG_GENERIC_HARDIRQS can be removed. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-08-30 09:39:53 +02:00
gpio: max732x: convert to GPIOLIB_IRQCHIP Take a sweep to bring the irq support for the MAX732x expanders into the gpiolib core to cut down on duplicated code. Only compile tested! I need some feedback from people using this expander with interrupts to tell me if things go right or wrong when I do this. Cc: Semen Protsenko <semen.protsenko@globallogic.com> Cc: Mans Rullgard <mans@mansr.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-01-30 11:32:01 +01:00
gpio: add interrupt handling capability to max732x Most of the GPIO expanders supported by the max732x driver have interrupt generation capability by reporting changes on input pins through an INT# pin. This patch implements the irq_chip functionnality (edge detection only). Signed-off-by: Marc Zyngier <maz@misterjones.org> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Jebediah Huang <jebediah.huang@gmail.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-26 14:42:16 -07:00
ARM/mx35/3ds: gpio: add mc9s08dz60 gpio function we only use the gpio function of mc9s08dz60 mcu chip, so just add the gpio driver, as this mcu will never be used in other board. Signed-off-by: Wu Guoxing <b39297@freescale.com> Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-01-30 14:31:20 +08:00
gpio: mc9s08dz60: Fix build error if I2C=m Make GPIO_MC9S08DZ60 depend on I2C=y, this fixes below build error: LD init/built-in.o drivers/built-in.o: In function `mc9s08dz60_get_value': clk-fixed-factor.c:(.text+0x7214): undefined reference to `i2c_smbus_read_byte_data' drivers/built-in.o: In function `mc9s08dz60_set': clk-fixed-factor.c:(.text+0x727c): undefined reference to `i2c_smbus_read_byte_data' clk-fixed-factor.c:(.text+0x72bc): undefined reference to `i2c_smbus_write_byte_data' drivers/built-in.o: In function `mc9s08dz60_i2c_driver_init': clk-fixed-factor.c:(.init.text+0x290): undefined reference to `i2c_register_driver' drivers/built-in.o: In function `mc9s08dz60_i2c_driver_exit': clk-fixed-factor.c:(.exit.text+0x2c): undefined reference to `i2c_del_driver' make: *** [vmlinux] Error 1 Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-08-29 09:35:24 +08:00
ARM/mx35/3ds: gpio: add mc9s08dz60 gpio function we only use the gpio function of mc9s08dz60 mcu chip, so just add the gpio driver, as this mcu will never be used in other board. Signed-off-by: Wu Guoxing <b39297@freescale.com> Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-01-30 14:31:20 +08:00
gpio: rename pca953x symbols This second part of an extension to support more pca953x chips renames the C and Kconfig symbols. All affected files were updated by sed, except for a couple of obvious exceptions. It also updates the Kconfig helptext. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06 01:39:03 -08:00
gpio: pca953x: Add NXP PCA9698 Add the NXP PCA9698 40-bit GPIO expander to the supported list. Note: This only enables GPIO functionality. Tested-by: Bob Schmitz <bschmitz@xes-inc.com> Signed-off-by: Aaron Sierra <asierra@xes-inc.com> Acked-by: Graeme Smecher <gsmecher@threespeedlogic.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-02-13 13:59:23 +01:00
gpiolib: pca9539 i2c gpio expander support This adds a new-style I2C driver with basic support for the sixteen bit PCA9539 GPIO expanders. These chips have multiple registers, push-pull output drivers, and (not supported in this patch) pin change interrupts. Board-specific code must provide "pca9539_platform_data" with each chip's "i2c_board_info". That provides the GPIO numbers to be used by that chip, and callbacks for board-specific setup/teardown logic. Derived from drivers/i2c/chips/pca9539.c (which has no current known users). This is faster and simpler; it uses 16-bit register access, and cache the OUTPUT and DIRECTION registers for fast access Signed-off-by: eric miao <eric.miao@marvell.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:26 -08:00
gpio: pca953x (i2c) handles max7310 too The pca953x driver can handle another 8-bit I/O expander, the max7310. This patch adds that chip to the list of supported IDs in that driver, and expands the Kconfig helptext accordingly. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-04 09:59:37 -07:00
gpio/pca953x: Update GPIO_PCA953X Kconfig entry to include more supported devices The Kconfig description and help text doesn't list all of the devices supported by this driver. This patch adds the PCA957x devices. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-04-06 17:11:46 +08:00
gpio: pca953x: Add Exar XRA1202 Add Exar XRA1202 8-bit GPIO expander to supported list. Signed-off-by: Aaron Sierra <asierra@xes-inc.com> Acked-by: Graeme Smecher <gsmecher@threespeedlogic.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-02-07 16:36:21 -06:00
gpio: pca953x (i2c) handles max7310 too The pca953x driver can handle another 8-bit I/O expander, the max7310. This patch adds that chip to the list of supported IDs in that driver, and expands the Kconfig helptext accordingly. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-04 09:59:37 -07:00
gpio/pca953x: Update GPIO_PCA953X Kconfig entry to include more supported devices The Kconfig description and help text doesn't list all of the devices supported by this driver. This patch adds the PCA957x devices. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-04-06 17:11:46 +08:00
gpiolib: pca9539 i2c gpio expander support This adds a new-style I2C driver with basic support for the sixteen bit PCA9539 GPIO expanders. These chips have multiple registers, push-pull output drivers, and (not supported in this patch) pin change interrupts. Board-specific code must provide "pca9539_platform_data" with each chip's "i2c_board_info". That provides the GPIO numbers to be used by that chip, and callbacks for board-specific setup/teardown logic. Derived from drivers/i2c/chips/pca9539.c (which has no current known users). This is faster and simpler; it uses 16-bit register access, and cache the OUTPUT and DIRECTION registers for fast access Signed-off-by: eric miao <eric.miao@marvell.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:26 -08:00
gpio: pca953x: Add devices to Kconfig help The pca953x driver supports tca6424 (24-bit) and pca9505 (40-bit) devices. They were the only supported devices not mentioned in the Kconfig help. Signed-off-by: Aaron Sierra <asierra@xes-inc.com> Acked-by: Graeme Smecher <gsmecher@threespeedlogic.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-02-07 16:35:48 -06:00
gpio: pca953x: Add NXP PCA9698 Add the NXP PCA9698 40-bit GPIO expander to the supported list. Note: This only enables GPIO functionality. Tested-by: Bob Schmitz <bschmitz@xes-inc.com> Signed-off-by: Aaron Sierra <asierra@xes-inc.com> Acked-by: Graeme Smecher <gsmecher@threespeedlogic.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-02-13 13:59:23 +01:00
gpio: pca953x: Add devices to Kconfig help The pca953x driver supports tca6424 (24-bit) and pca9505 (40-bit) devices. They were the only supported devices not mentioned in the Kconfig help. Signed-off-by: Aaron Sierra <asierra@xes-inc.com> Acked-by: Graeme Smecher <gsmecher@threespeedlogic.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-02-07 16:35:48 -06:00
gpio: pca953x.c: add interrupt handling capability Most of the GPIO expanders controlled by the pca953x driver are able to report changes on the input pins through an *INT pin. This patch implements the irq_chip functionality (edge detection only). The driver has been tested on an Arcom Zeus. [akpm@linux-foundation.org: the compiler does inlining for us nowadays] Signed-off-by: Marc Zyngier <maz@misterjones.org> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Haojian Zhuang <haojian.zhuang@gmail.com> Cc: David Brownell <david-b@pacbell.net> Cc: Nate Case <ncase@xes-inc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-05 13:44:36 -08:00
gpio: pca953x: use gpiolib irqchip helpers This switches the PCA953x driver over to using the gpiolib irqchip helpers to handle the threaded interrups cascaded off this GPIO chip. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-05-09 13:27:57 +02:00
gpio: pca953x.c: add interrupt handling capability Most of the GPIO expanders controlled by the pca953x driver are able to report changes on the input pins through an *INT pin. This patch implements the irq_chip functionality (edge detection only). The driver has been tested on an Arcom Zeus. [akpm@linux-foundation.org: the compiler does inlining for us nowadays] Signed-off-by: Marc Zyngier <maz@misterjones.org> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Haojian Zhuang <haojian.zhuang@gmail.com> Cc: David Brownell <david-b@pacbell.net> Cc: Nate Case <ncase@xes-inc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-05 13:44:36 -08:00
gpiolib: pcf857x i2c gpio expander support This is a new-style I2C driver for most common 8 and 16 bit I2C based "quasi-bidirectional" GPIO expanders: pcf8574 or pcf8575, and several compatible models (mostly faster, supporting I2C at up to 1 MHz). The driver exposes the GPIO signals using the platform-neutral GPIO programming interface, so they are easily accessed by other kernel code. The lack of such a flexible kernel API has been a big factor in the proliferation of board-specific drivers for these chips... stuff that rarely makes it upstream since it's so ugly. This driver will let such boards use standard calls. Since it's a new-style driver, these devices must be configured as part of board-specific init. That eliminates the need for error-prone manual configuration of module parameters, and makes compatibility with legacy drivers (pcf8574.c, pc8575.c) for these chips easier (there's a clear either/or disjunction). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:24 -08:00
gpio: pcf857x: add lock and handle more chips Two small updates to the pcf857x driver: (a) the max732[89] chips are also second sources for the pcf8574/a, and (b) add a mutex to prevent trashing the cached state. Adding the lock is effectively a bugfix, although it seems unlikely that anyone would have run into the issue it protects against. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-21 14:21:34 -07:00
gpio: pcf857x: Switch to use gpiolib irqchip helpers Switch the PCF857x GPIO driver to use the gpiolib irqchip helpers. This driver uses a nested threaded interrupt, hence handle_nested_irq() and gpiochip_set_chained_irqchip() must be used. Note that this removes the checks added in commit 21fd3cd1874a2ac8 ("gpio: pcf857x: call the gpio user handler iff gpio_to_irq is done"), as the interrupt mappings are no longer created on-demand by the driver, but by gpiochip_irqchip_add() during initialization. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-02-05 16:49:08 +01:00
gpio: pcf857x: select IRQ_DOMAIN Patch 6e20a0a4 "gpio: pcf857x: enable gpio_to_irq() support" added IRQ domain support to the pcf857x driver, but some configurations (e.g. davinci_all_defconfig) don't already enable CONFIG_IRQ_DOMAIN. Always selecting it from the Kconfig in this case is what other such drivers do as well, and avoids these build errors: Without this patch, building davinci_all_defconfig results in: drivers/gpio/gpio-pcf857x.c: In function 'pcf857x_to_irq': drivers/gpio/gpio-pcf857x.c:167:2: error: implicit declaration of function 'irq_create_mapping' drivers/gpio/gpio-pcf857x.c: In function 'pcf857x_irq_demux_work': drivers/gpio/gpio-pcf857x.c:183:3: error: implicit declaration of function 'irq_find_mapping' drivers/gpio/gpio-pcf857x.c: In function 'pcf857x_irq_domain_cleanup': drivers/gpio/gpio-pcf857x.c:218:3: error: implicit declaration of function 'irq_domain_remove' drivers/gpio/gpio-pcf857x.c: In function 'pcf857x_irq_domain_init': drivers/gpio/gpio-pcf857x.c:230:2: error: implicit declaration of function 'irq_domain_add_linear' Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-09-28 23:36:15 +02:00
gpiolib: pcf857x i2c gpio expander support This is a new-style I2C driver for most common 8 and 16 bit I2C based "quasi-bidirectional" GPIO expanders: pcf8574 or pcf8575, and several compatible models (mostly faster, supporting I2C at up to 1 MHz). The driver exposes the GPIO signals using the platform-neutral GPIO programming interface, so they are easily accessed by other kernel code. The lack of such a flexible kernel API has been a big factor in the proliferation of board-specific drivers for these chips... stuff that rarely makes it upstream since it's so ugly. This driver will let such boards use standard calls. Since it's a new-style driver, these devices must be configured as part of board-specific init. That eliminates the need for error-prone manual configuration of module parameters, and makes compatibility with legacy drivers (pcf8574.c, pc8575.c) for these chips easier (there's a clear either/or disjunction). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:24 -08:00
gpio: pcf857x: add lock and handle more chips Two small updates to the pcf857x driver: (a) the max732[89] chips are also second sources for the pcf8574/a, and (b) add a mutex to prevent trashing the cached state. Adding the lock is effectively a bugfix, although it seems unlikely that anyone would have run into the issue it protects against. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-21 14:21:34 -07:00
gpiolib: pcf857x i2c gpio expander support This is a new-style I2C driver for most common 8 and 16 bit I2C based "quasi-bidirectional" GPIO expanders: pcf8574 or pcf8575, and several compatible models (mostly faster, supporting I2C at up to 1 MHz). The driver exposes the GPIO signals using the platform-neutral GPIO programming interface, so they are easily accessed by other kernel code. The lack of such a flexible kernel API has been a big factor in the proliferation of board-specific drivers for these chips... stuff that rarely makes it upstream since it's so ugly. This driver will let such boards use standard calls. Since it's a new-style driver, these devices must be configured as part of board-specific init. That eliminates the need for error-prone manual configuration of module parameters, and makes compatibility with legacy drivers (pcf8574.c, pc8575.c) for these chips easier (there's a clear either/or disjunction). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:24 -08:00
gpio: sx150x: add Semtech I2C sx150x gpio expander driver Add support for Semtech SX150-series I2C GPIO expanders. Compatible models include: 8 bits: sx1508q 16 bits: sx1509q Signed-off-by: Gregory Bean <gbean@codeaurora.org> Cc: David Brownell <david-b@pacbell.net> Cc: Jean Delvare <khali@linux-fr.org> Cc: Trilok Soni <tsoni@codeaurora.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-10 18:02:27 -07:00
gpio: sx150x: move to irqdomain framework for sx150x driver The sx150x gpio driver used a loop to set liner irq map for gpio pins. Now we use the irq domain to rebuild this irq mappig and make sure the codes are still compatible to old users. this patch also adds IRQF_ONESHOT flag to fix the IRQ flooding issues. Signed-off-by: Wei Chen <Wei.Chen@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> [Make Kconfig select GPIOLIB_IRQCHIP] Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-12-04 20:12:08 +08:00
gpio: sx150x: add Semtech I2C sx150x gpio expander driver Add support for Semtech SX150-series I2C GPIO expanders. Compatible models include: 8 bits: sx1508q 16 bits: sx1509q Signed-off-by: Gregory Bean <gbean@codeaurora.org> Cc: David Brownell <david-b@pacbell.net> Cc: Jean Delvare <khali@linux-fr.org> Cc: Trilok Soni <tsoni@codeaurora.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-10 18:02:27 -07:00
gpio: split GPIO drivers in submenus Create Kconfig submenus for memory mapped, I2C, MFD, PCI, SPI and USB GPIO drivers to help navigate the forest of drivers in this subsystem. The I2C, SPI and USB menus get dependencies so we don't have to see them unless we have the required subsystem enabled in the first place. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 15:11:16 +02:00
gpio: move MFD GPIO drivers under their own comment Get rid of AC97, MODULbus and other weird subheadings for GPIO drivers. Move all MFD drivers out of I2C etc and in under the MFD comment. This is too weird as it is and makes no sense, if the dependent parent driver is MFD, group these as MFD GPIO drivers. Alphabetize and move this comment group inbetween "I2C" and "PCI" to also have the groups in alphabetic order. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:51:23 +02:00
gpio/rc5t583: add gpio driver for RICOH PMIC RC5T583 The PMIC device RC5T583 from RICOH supports 8 gpios. Adding gpio driver for this device to access the pins control through gpio library. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> [grant.likely: slight cosmetic changes] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-05-14 12:46:12 +05:30
gpio: Add STMPE GPIO driver Add support for the GPIOs on STMPE I/O Expanders. [l.fu@pengutronix.de: fix set direction input] [l.fu@pengutronix.de: set GPIO alternate function while requesting] Acked-by: Luotao Fu <l.fu@pengutronix.de> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-07-02 16:52:09 +05:30
gpio: stmpe: enforce device tree only mode Require that device tree be used with STMPE (all platforms use this) and enforce OF_GPIO, then delete the platform data. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-01-13 08:00:29 +01:00
gpio: stmpe: switch to use gpiolib irqchip helpers This switches the STMPE driver to use the gpiolib irqchip helpers. Tested-by: Silvio Fricke <silvio.fricke@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-15 23:38:56 +02:00
gpio: Add STMPE GPIO driver Add support for the GPIOs on STMPE I/O Expanders. [l.fu@pengutronix.de: fix set direction input] [l.fu@pengutronix.de: set GPIO alternate function while requesting] Acked-by: Luotao Fu <l.fu@pengutronix.de> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-07-02 16:52:09 +05:30
mfd/tc35892: rename tc35892 core driver to tc3589x Rename the tc35892 core/gpio drivers to tc3589x to include new variants in the same mfd core Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Sundar Iyer <sundar.iyer@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
2010-12-13 09:33:13 +05:30
mfd: tc3589x: Enforce device-tree only mode All systems using the TC3589x multifunction expander uses devicetree, so don't clutter the place with a lot of and assume it is there. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-03-19 15:52:45 +01:00
gpio: tc3589x: use gpiolib irqchip helpers Now that the gpiolib irqchip helpers can support nested, threaded IRQ handlers, switch the TC3589x driver over to using this new infrastructure. Tested on the Ux500. Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-09 13:38:33 +02:00
gpio: Add TC35892 GPIO driver Add a GPIO driver to support the GPIOs on the TC35892 I/O Expander. Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-05-10 23:43:47 +02:00
mfd/tc35892: rename tc35892 core driver to tc3589x Rename the tc35892 core/gpio drivers to tc3589x to include new variants in the same mfd core Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Sundar Iyer <sundar.iyer@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
2010-12-13 09:33:13 +05:30
gpio: Add TC35892 GPIO driver Add a GPIO driver to support the GPIOs on the TC35892 I/O Expander. Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-05-10 23:43:47 +02:00
gpio: move MFD GPIO drivers under their own comment Get rid of AC97, MODULbus and other weird subheadings for GPIO drivers. Move all MFD drivers out of I2C etc and in under the MFD comment. This is too weird as it is and makes no sense, if the dependent parent driver is MFD, group these as MFD GPIO drivers. Alphabetize and move this comment group inbetween "I2C" and "PCI" to also have the groups in alphabetic order. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:51:23 +02:00
tps65912: gpio: add gpio driver TPS65912 has five GPIOs that can be configured for different purposes. Signed-off-by: Margarita Olaya Cabrera <magi@slimlogic.co.uk> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-06-09 14:50:19 -05:00
mfd: twl4030-gpio driver This adds basic support for the GPIOs in the twl4030 power management chip. That includes two open drain LED drivers, and the use of GPIO-0 (and GPIO-1) as MMC/SD card detect switches which can control whether the VMMC1 (and VMMC2) regulators are active. This version of the code has a debounce call that will probably be replaced before long, when a more generic interface exists. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
2008-10-20 23:51:46 +02:00
gpio: Add basic support for TWL6040 GPOs TWL6040 provides GPO lines to be used for controlling external devices.The number of lines different between versions: twl6040 have 3 GPO while TWL6041 have 1. Signed-off-by: Sergio Aguirre <saaguirre@ti.com> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-08-16 15:13:15 +03:00
gpio: move MFD GPIO drivers under their own comment Get rid of AC97, MODULbus and other weird subheadings for GPIO drivers. Move all MFD drivers out of I2C etc and in under the MFD comment. This is too weird as it is and makes no sense, if the dependent parent driver is MFD, group these as MFD GPIO drivers. Alphabetize and move this comment group inbetween "I2C" and "PCI" to also have the groups in alphabetic order. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:51:23 +02:00
gpio: Add WM831X GPIO driver Add support for the GPIO pins on the WM831x. No direct support is currently supplied for configuring non-gpiolib functionality such as pull configuration and alternate functions, soft configuration of these will be provided in a future patch. Currently use of these pins as interrupts is not supported due to the ongoing issues with generic irq not support interrupt controllers on interrupt driven buses. Users can directly request the interrupts with the wm831x-specific APIs currently provided if required. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2009-07-27 14:46:00 +01:00
gpiolib: Add support for WM8350 GPIO controller Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-01-07 16:10:08 +00:00
gpiolib: Add WM8994 GPIO support The WM8994 has 11 GPIO lines. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-01-29 18:20:30 +00:00
gpio: split GPIO drivers in submenus Create Kconfig submenus for memory mapped, I2C, MFD, PCI, SPI and USB GPIO drivers to help navigate the forest of drivers in this subsystem. The I2C, SPI and USB menus get dependencies so we don't have to see them unless we have the required subsystem enabled in the first place. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 15:11:16 +02:00
gpio: add bt8xxgpio driver This adds the bt8xxgpio driver. The purpose of the bt8xxgpio driver is to export all of the 24 GPIO pins available on Brooktree 8xx chips to the kernel GPIO infrastructure. This makes it possible to use a physically modified BT8xx card as cheap digital GPIO card. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: David Brownell <david-b@pacbell.net> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 01:46:10 -07:00
gpio: arrange PCI GPIO controllers alphabetically Rearrange PCI GPIO controllers in alphabetic order as already indicated by the comment in the file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:30:37 +02:00
gpio: gpio support for ADP5520/ADP5501 MFD PMICs Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-22 16:46:39 -07:00
gpio: arrange PCI GPIO controllers alphabetically Rearrange PCI GPIO controllers in alphabetic order as already indicated by the comment in the file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:30:37 +02:00
gpio: gpio support for ADP5520/ADP5501 MFD PMICs Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-22 16:46:39 -07:00
gpio: arrange PCI GPIO controllers alphabetically Rearrange PCI GPIO controllers in alphabetic order as already indicated by the comment in the file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:30:37 +02:00
gpio: adp5588-gpio: new driver for ADP5588 GPIO expanders Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: Jean Delvare <khali@linux-fr.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-01-08 14:43:08 -08:00
gpio: arrange PCI GPIO controllers alphabetically Rearrange PCI GPIO controllers in alphabetic order as already indicated by the comment in the file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:30:37 +02:00
cs5535-gpio: add AMD CS5535/CS5536 GPIO driver support This creates a CS5535/CS5536 GPIO driver which uses a gpio_chip backend (allowing GPIO users to use the generic GPIO API if desired) while also allowing architecture-specific users directly (via the cs5535_gpio_* functions). Tested on an OLPC machine. Some Leemotes also use CS5536 (with a mips cpu), which is why this is in drivers/gpio rather than arch/x86. Currently, it conflicts with older geode GPIO support; once MFGPT support is reworked to also be more generic, the older geode code will be removed. Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Cc: Takashi Iwai <tiwai@suse.de> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: David Brownell <david-b@pacbell.net> Reviewed-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-14 18:00:32 -08:00
gpio: add bt8xxgpio driver This adds the bt8xxgpio driver. The purpose of the bt8xxgpio driver is to export all of the 24 GPIO pins available on Brooktree 8xx chips to the kernel GPIO infrastructure. This makes it possible to use a physically modified BT8xx card as cheap digital GPIO card. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: David Brownell <david-b@pacbell.net> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 01:46:10 -07:00
gpio: Spelling s/than/that/ Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-03-11 11:23:44 +01:00
gpio: add bt8xxgpio driver This adds the bt8xxgpio driver. The purpose of the bt8xxgpio driver is to export all of the 24 GPIO pins available on Brooktree 8xx chips to the kernel GPIO infrastructure. This makes it possible to use a physically modified BT8xx card as cheap digital GPIO card. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: David Brownell <david-b@pacbell.net> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 01:46:10 -07:00
gpio: rename gpio-langwell to gpio-intel-mid gpio-langwell is a deprecated name. Despite the driver was made initially for Langwell, it supports now other Intel Mid SoC's. This patch does no change beside the file renaming with Kconfig/Makefile update. Signed-off-by: David Cohen <david.a.cohen@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-04 13:01:41 -07:00
gpio; Make Intel chipset gpio drivers depend on x86 Nothing outside of x86 can use that code. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-03-17 19:32:46 +00:00
gpio: select IRQ_DOMAIN for gpiolib irqchip helpers These helpers depend on the IRQ_DOMAIN so select it explicitly, as it will not be present on all platforms such as Intel desktops and laptops using Intel-MID. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-05-29 16:52:46 +02:00
gpio: add Intel Moorestown Platform Langwell chip gpio driver The Langwell chip is the IO hub for Intel Moorestown platform which has a 64-pin gpio block device inside. It is exposed as a dedicated PCI device. We use it to control outside peripheral as well as to do IRQ demuxing. The gpio block uses MSI to send level type interrupt to IOAPIC. Signed-off-by: Alek Du <alek.du@intel.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-22 16:46:36 -07:00
gpio: rename gpio-langwell to gpio-intel-mid gpio-langwell is a deprecated name. Despite the driver was made initially for Langwell, it supports now other Intel Mid SoC's. This patch does no change beside the file renaming with Kconfig/Makefile update. Signed-off-by: David Cohen <david.a.cohen@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-04 13:01:41 -07:00
gpio: add Intel Moorestown Platform Langwell chip gpio driver The Langwell chip is the IO hub for Intel Moorestown platform which has a 64-pin gpio block device inside. It is exposed as a dedicated PCI device. We use it to control outside peripheral as well as to do IRQ demuxing. The gpio block uses MSI to send level type interrupt to IOAPIC. Signed-off-by: Alek Du <alek.du@intel.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-22 16:46:36 -07:00
gpio: arrange PCI GPIO controllers alphabetically Rearrange PCI GPIO controllers in alphabetic order as already indicated by the comment in the file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:30:37 +02:00
gpio: add Topcliff PCH GPIO driver Topcliff PCH is the platform controller hub that is going to be used in Intel's upcoming general embedded platform. All IO peripherals in Topcliff PCH are actually devices sitting on AMBA bus. Topcliff PCH has GPIO I/F. Using this I/F, it is able to access system devices connected to GPIO. [akpm@linux-foundation.org: ese DEFINE_PCI_DEVICE_TABLE (per Joe Perches)] Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Rabin Vincent <rabin.vincent@stericsson.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Linus Walleij <linus.walleij@stericsson.com> Cc: Tomoya MORINAGA <morinaga526@dsn.okisemi.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27 15:33:21 -07:00
pch_gpio: Support new device LAPIS Semiconductor ML7831 IOH ML7831 is companion chip for Intel Atom E6xx series. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-28 09:23:32 +09:00
gpio-pch: Fix Kconfig dependencies The gpio-pch driver is for a companion chip to the Intel Atom E600 series processors. These are 32-bit x86 processors so the driver is only needed on X86_32. Add COMPILE_TEST as an alternative, so that the driver can still be build-tested elsewhere. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Alexandre Courbot <gnurou@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-05-16 11:59:14 +02:00
gpio-pch: Support interrupt function Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-21 09:19:59 +09:00
gpio: add Topcliff PCH GPIO driver Topcliff PCH is the platform controller hub that is going to be used in Intel's upcoming general embedded platform. All IO peripherals in Topcliff PCH are actually devices sitting on AMBA bus. Topcliff PCH has GPIO I/F. Using this I/F, it is able to access system devices connected to GPIO. [akpm@linux-foundation.org: ese DEFINE_PCI_DEVICE_TABLE (per Joe Perches)] Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Rabin Vincent <rabin.vincent@stericsson.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Linus Walleij <linus.walleij@stericsson.com> Cc: Tomoya MORINAGA <morinaga526@dsn.okisemi.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27 15:33:21 -07:00
pch_gpio: Support new device LAPIS Semiconductor ML7831 IOH ML7831 is companion chip for Intel Atom E6xx series. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-28 09:23:32 +09:00
gpio/pch_gpio: Support new device ML7223 Support new device OKI SEMICONDUCTOR ML7223 IOH(Input/Output Hub). The ML7223 IOH is for MP(Media Phone) use. The ML7223 is companion chip for Intel Atom E6xx series. The ML7223 is completely compatible for Intel EG20T PCH. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-05-09 19:58:49 +09:00
pch_gpio: Support new device LAPIS Semiconductor ML7831 IOH ML7831 is companion chip for Intel Atom E6xx series. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-28 09:23:32 +09:00
gpio/pch_gpio: Support new device ML7223 Support new device OKI SEMICONDUCTOR ML7223 IOH(Input/Output Hub). The ML7223 IOH is for MP(Media Phone) use. The ML7223 is companion chip for Intel Atom E6xx series. The ML7223 is completely compatible for Intel EG20T PCH. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-05-09 19:58:49 +09:00
gpio: Add support for RDC321x GPIO controller This patch adds a new GPIO driver for the RDC321x SoC GPIO controller. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-03-21 01:06:09 +01:00
Remove GENERIC_HARDIRQ config option After the last architecture switched to generic hard irqs the config options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code for !CONFIG_GENERIC_HARDIRQS can be removed. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-08-30 09:39:53 +02:00
gpio: rdc321x needs to select MFD_CORE Fix rdc321x-southbridge build: GPIO_RDC321X needs to select MFD_CORE so that the core is built at the same (or higher) tristate level. rdc321x-southbridge.c:(.devinit.text+0x6103): undefined reference to `mfd_add_devices' rdc321x-southbridge.c:(.devexit.text+0xe5f): undefined reference to `mfd_remove_devices' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Florian Fainelli <florian@openwrt.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-05-11 13:24:20 -07:00
gpio: Add support for RDC321x GPIO controller This patch adds a new GPIO driver for the RDC321x SoC GPIO controller. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-03-21 01:06:09 +01:00
gpio: Add a driver for Sodaville GPIO controller Sodaville has GPIO controller behind the PCI bus. To my suprissed it is not the same as on PXA. The interrupt & gpio chip can be referenced from the device tree like from any other driver. Unfortunately the driver which uses the gpio interrupt has to use irq_of_parse_and_map() instead of platform_get_irq(). The problem is that the platform device (which is created from the device tree) is most likely created before the interrupt chip is registered and therefore irq_of_parse_and_map() fails. In theory the driver works as module. In reality most of the irq functions are not exported to modules and it is possible that _this_ module is unloaded while the provided irqs are still in use. Signed-off-by: Hans J. Koch <hjk@linutronix.de> [torbenh@linutronix.de: make it work after the irq namespace cleanup, add some device tree entries.] Signed-off-by: Torben Hohn <torbenh@linutronix.de> [bigeasy@linutronix.de: convert to generic irq & gpio chip] Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> [grant.likely@secretlab.ca: depend on x86 to avoid irq_domain breakage] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-27 09:26:23 +02:00
gpio/sodaville: Convert sodaville driver to new irqdomain API The irqdomain api changed significantly in v3.4 which caused a build failure for this driver. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Hans J. Koch <hjk@linutronix.de> Cc: Torben Hohn <torbenh@linutronix.de>
2012-03-28 14:55:04 -06:00
gpio: Add a driver for Sodaville GPIO controller Sodaville has GPIO controller behind the PCI bus. To my suprissed it is not the same as on PXA. The interrupt & gpio chip can be referenced from the device tree like from any other driver. Unfortunately the driver which uses the gpio interrupt has to use irq_of_parse_and_map() instead of platform_get_irq(). The problem is that the platform device (which is created from the device tree) is most likely created before the interrupt chip is registered and therefore irq_of_parse_and_map() fails. In theory the driver works as module. In reality most of the irq functions are not exported to modules and it is possible that _this_ module is unloaded while the provided irqs are still in use. Signed-off-by: Hans J. Koch <hjk@linutronix.de> [torbenh@linutronix.de: make it work after the irq namespace cleanup, add some device tree entries.] Signed-off-by: Torben Hohn <torbenh@linutronix.de> [bigeasy@linutronix.de: convert to generic irq & gpio chip] Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> [grant.likely@secretlab.ca: depend on x86 to avoid irq_domain breakage] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-27 09:26:23 +02:00
gpio: split GPIO drivers in submenus Create Kconfig submenus for memory mapped, I2C, MFD, PCI, SPI and USB GPIO drivers to help navigate the forest of drivers in this subsystem. The I2C, SPI and USB menus get dependencies so we don't have to see them unless we have the required subsystem enabled in the first place. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 15:11:16 +02:00
gpio: add GPIO driver for the Timberdale FPGA A GPIO driver for the Timberdale FPGA found on the Intel Atom board Russellville. The GPIO driver also has an IRQ-chip to support interrupts on the pins. Signed-off-by: Richard Röjfors <richard.rojfors@mocean-labs.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15 16:46:18 -08:00
gpio: split GPIO drivers in submenus Create Kconfig submenus for memory mapped, I2C, MFD, PCI, SPI and USB GPIO drivers to help navigate the forest of drivers in this subsystem. The I2C, SPI and USB menus get dependencies so we don't have to see them unless we have the required subsystem enabled in the first place. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 15:11:16 +02:00
gpiolib: add drivers/gpio directory Add an empty drivers/gpio directory for gpiolib infrastructure and GPIO expanders. It will be populated by later patches. This won't be the only place to hold such gpio_chip code. Many external chips add a few GPIOs as secondary functionality (such as MFD drivers) and platform code frequently needs to closely integrate GPIO and IRQ support. This is placed *early* in the build/link sequence since it's common for other drivers to depend on GPIOs to do their work, so they must be initialized early in the device_initcall() sequence. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:17 -08:00
gpio: arrange SPI Kconfig symbols alphabetically Rearrange the SPI GPIO expanders in alphabetic order as already indicated by the comment in the file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:34:51 +02:00
gpio: fix up SPI submenu - Relax dependencies on SPI_MASTER for drivers in the SPI menu that already has this dependency. - Move out the expander that would be hidden for I2C access if SPI_MASTER was not selected. Tentatively create a separate menu for this. - Move the ZX SoC driver to memory-mapped drivers, this must be a mistake and only worked because the system has an SPI master enabled at the same time. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-01 10:50:19 +01:00
gpio: arrange SPI Kconfig symbols alphabetically Rearrange the SPI GPIO expanders in alphabetic order as already indicated by the comment in the file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 14:34:51 +02:00
gpiolib: add drivers/gpio directory Add an empty drivers/gpio directory for gpiolib infrastructure and GPIO expanders. It will be populated by later patches. This won't be the only place to hold such gpio_chip code. Many external chips add a few GPIOs as secondary functionality (such as MFD drivers) and platform code frequently needs to closely integrate GPIO and IRQ support. This is placed *early* in the build/link sequence since it's common for other drivers to depend on GPIOs to do their work, so they must be initialized early in the device_initcall() sequence. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:17 -08:00
gpio: gpio driver for max7301 SPI GPIO expander Maxim's MAX7301 is an SPI GPIO expander with 28 GPIOs. Note: MAX7301's interrupt feature is not supported yet. [akpm@linux-foundation.org: coding-style fixes] [g.liakhovetski@pengutronix.de: Fix inaccuracies in comments, check spi_setup() return code, mask off high byte in max7301_read()] Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-21 14:21:34 -07:00
gpio: add driver for MAX7300 I2C GPIO extender Add the MAX7300-I2C variant of the MAX7301-SPI version. Both chips share the same core logic, so the generic part of the in-kernel SPI-driver is refactored into a generic part. The I2C and SPI specific funtions are then wrapped into seperate drivers picking up the generic part. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Juergen Beisert <j.beisert@pengutronix.de> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Jean Delvare <khali@linux-fr.org> Cc: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-05 13:44:33 -08:00
gpio: gpio driver for max7301 SPI GPIO expander Maxim's MAX7301 is an SPI GPIO expander with 28 GPIOs. Note: MAX7301's interrupt feature is not supported yet. [akpm@linux-foundation.org: coding-style fixes] [g.liakhovetski@pengutronix.de: Fix inaccuracies in comments, check spi_setup() return code, mask off high byte in max7301_read()] Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-21 14:21:34 -07:00
gpio: add driver for MAX7300 I2C GPIO extender Add the MAX7300-I2C variant of the MAX7301-SPI version. Both chips share the same core logic, so the generic part of the in-kernel SPI-driver is refactored into a generic part. The I2C and SPI specific funtions are then wrapped into seperate drivers picking up the generic part. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Juergen Beisert <j.beisert@pengutronix.de> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Jean Delvare <khali@linux-fr.org> Cc: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-05 13:44:33 -08:00
gpio: gpio driver for max7301 SPI GPIO expander Maxim's MAX7301 is an SPI GPIO expander with 28 GPIOs. Note: MAX7301's interrupt feature is not supported yet. [akpm@linux-foundation.org: coding-style fixes] [g.liakhovetski@pengutronix.de: Fix inaccuracies in comments, check spi_setup() return code, mask off high byte in max7301_read()] Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-21 14:21:34 -07:00
gpio: fix up SPI submenu - Relax dependencies on SPI_MASTER for drivers in the SPI menu that already has this dependency. - Move out the expander that would be hidden for I2C access if SPI_MASTER was not selected. Tentatively create a separate menu for this. - Move the ZX SoC driver to memory-mapped drivers, this must be a mistake and only worked because the system has an SPI master enabled at the same time. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-01 10:50:19 +01:00
mcp23s08 spi gpio expander support Basic driver for 8-bit SPI based MCP23S08 GPIO expander, without support for IRQs or the shared chipselect mechanism. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:25 -08:00
mcp23s08: add i2c support Add i2c bindings for the mcp230xx devices. This is quite a lot simpler than the spi one as there's no funky sub addressing done (one struct i2c_client per struct gpio_chip). The mcp23s08_platform_data structure is reused for i2c, even though only a single mcp23s08_chip_info structure is needed. To use, simply fill out a platform_data structure and pass it in i2c_board_info, E.G.: static const struct mcp23s08_platform_data mcp23017_data = { .chip[0] = { .pullups = 0x00ff, }, .base = 240, }; static struct i2c_board_info __initdata i2c_devs[] = { { I2C_BOARD_INFO("mcp23017", 0x20), .platform_data = &smartview_mcp23017_data, }, ... }; Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-15 10:25:32 +02:00
mcp23s08 spi gpio expander support Basic driver for 8-bit SPI based MCP23S08 GPIO expander, without support for IRQs or the shared chipselect mechanism. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:25 -08:00
mcp23s08: add i2c support Add i2c bindings for the mcp230xx devices. This is quite a lot simpler than the spi one as there's no funky sub addressing done (one struct i2c_client per struct gpio_chip). The mcp23s08_platform_data structure is reused for i2c, even though only a single mcp23s08_chip_info structure is needed. To use, simply fill out a platform_data structure and pass it in i2c_board_info, E.G.: static const struct mcp23s08_platform_data mcp23017_data = { .chip[0] = { .pullups = 0x00ff, }, .base = 240, }; static struct i2c_board_info __initdata i2c_devs[] = { { I2C_BOARD_INFO("mcp23017", 0x20), .platform_data = &smartview_mcp23017_data, }, ... }; Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-15 10:25:32 +02:00
gpio/mcp23s08: support mcp23s17 variant mpc23s17 is very similar to the mcp23s08, except that registers are 16bit wide, so extend the interface to work with both variants. The s17 variant also has an additional address pin, so adjust platform data structure to support up to 8 devices per SPI chipselect. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-03-09 17:56:30 +01:00
gpio: mcp23s08: Add irq functionality for i2c chips This adds interrupt functionality for i2c chips to the driver. They can act as a interrupt-controller and generate interrupts, if the inputs change. This is tested with a mcp23017 chip on an arm based platform. v3: - be a bit more clear that the irq functionality is also available on spi versions of the chips, but the linux driver does not support this yet v2: - some more word about irq-mirror property in binding doc - use of_read_bool instead of of_find_property for "interrupt-contrller" and "irq-mirror" - cache the "interrupt-controller" for remove function - do set the irq-mirror bit only if device is marked as interrupt-controller - do create the irq mapping and setup of irq_desc of all possible interrupts in probe path instead of in gpio_to_irq - mark gpios as in use as interrupts in irq in irq_startup and unlock it in irq_shutdown - rename virq to child_irq - remove dev argument from mcp23s08_irq_setup function - move gpiochip_add before mcp23s08_irq_setup in probe path Signed-off-by: Lars Poeschel <poeschel@lemonage.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-01-16 11:44:15 +01:00
mcp23s08 spi gpio expander support Basic driver for 8-bit SPI based MCP23S08 GPIO expander, without support for IRQs or the shared chipselect mechanism. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 22:28:25 -08:00
gpio: split GPIO drivers in submenus Create Kconfig submenus for memory mapped, I2C, MFD, PCI, SPI and USB GPIO drivers to help navigate the forest of drivers in this subsystem. The I2C, SPI and USB menus get dependencies so we don't have to see them unless we have the required subsystem enabled in the first place. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 15:11:16 +02:00
gpio: add support for 74x164 serial-in/parallel-out 8-bit shift register Add support for generic 74x164 serial-in/parallel-out 8-bits shift register. This driver can be used as a GPIO output expander. [akpm@linux-foundation.org: remove unused local `refresh'] Signed-off-by: Miguel Gaio <miguel.gaio@efixo.com> Signed-off-by: Juhos Gabor <juhosg@openwrt.org> Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27 15:33:18 -07:00
gpio: split GPIO drivers in submenus Create Kconfig submenus for memory mapped, I2C, MFD, PCI, SPI and USB GPIO drivers to help navigate the forest of drivers in this subsystem. The I2C, SPI and USB menus get dependencies so we don't have to see them unless we have the required subsystem enabled in the first place. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 15:11:16 +02:00
gpio: Add viperboard gpio driver This adds the mfd cell to use the gpio a and gpio b part of the Nano River Technologies viperboard. Signed-off-by: Lars Poeschel <poeschel@lemonage.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-05 15:48:24 +01:00
gpio: split GPIO drivers in submenus Create Kconfig submenus for memory mapped, I2C, MFD, PCI, SPI and USB GPIO drivers to help navigate the forest of drivers in this subsystem. The I2C, SPI and USB menus get dependencies so we don't have to see them unless we have the required subsystem enabled in the first place. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-08 15:11:16 +02:00
gpio: add support for the Diolan DLN-2 USB GPIO driver This patch adds GPIO and IRQ support for the Diolan DLN-2 GPIO module. Information about the USB protocol interface can be found in the Programmer's Reference Manual [1], see section 2.9 for the GPIO module commands and responses. [1] https://www.diolan.com/downloads/dln-api-manual.pdf Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Octavian Purdila <octavian.purdila@intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Johan Hovold <johan@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-11-06 15:48:05 +02:00
gpiolib: allow user-selection This patch adds functionality to the gpio-lib subsystem to make it possible to enable the gpio-lib code even if the architecture code didn't request to get it built in. The archtitecture code does still need to implement the gpiolib accessor functions in its asm/gpio.h file. This patch adds the implementations for x86 and PPC. With these changes it is possible to run generic GPIO expansion cards on every architecture that implements the trivial wrapper functions. Support for more architectures can easily be added. Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: David Brownell <david-b@pacbell.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jean Delvare <khali@linux-fr.org> Cc: Samuel Ortiz <sameo@openedhand.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 01:46:11 -07:00