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6072b9dcf9
linux/drivers/gpio
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Mika Westerberg 6072b9dcf9 gpio / ACPI: Rework ACPI GPIO event handling 
The current ACPI GPIO event handling code was never tested against real
hardware with functioning GPIO triggered events (at the time such hardware
wasn't available). Thus it misses certain things like requesting the GPIOs
properly, passing correct flags to the interrupt handler and so on.

This patch reworks ACPI GPIO event handling so that we:

 1) Use struct acpi_gpio_event for all GPIO signaled events.
 2) Switch to use GPIO descriptor API and request GPIOs by calling
    gpiochip_request_own_desc() that we added in a previous patch.
 3) Pass proper flags from ACPI GPIO resource to request_threaded_irq().

Also instead of open-coding the _AEI iteration loop we can use
acpi_walk_resources(). This simplifies the code a bit and fixes memory leak
that was caused by missing kfree() for buffer returned by
acpi_get_event_resources().

Since the remove path now calls gpiochip_free_own_desc() which takes GPIO
spinlock we need to call acpi_gpiochip_remove() outside of that lock
(analogous to acpi_gpiochip_add() path where the lock is released before
those funtions are called).

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-03-13 15:15:43 +01:00
..
devres.c gpiolib: devres: add missing headers 2013-10-29 18:26:14 -07:00
gpio-74x164.c gpio: 74x164: Driver cleanup 2013-12-12 14:28:12 +01:00
gpio-adnp.c Merge branch 'mark-irqs' into devel 2013-12-04 14:48:17 +01:00
gpio-adp5520.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-adp5588.c gpio: adp5588 - add support for gpio names 2014-02-13 13:52:44 +01:00
gpio-amd8111.c gpio: remove DEFINE_PCI_DEVICE_TABLE macro 2013-12-03 13:16:09 +01:00
gpio-arizona.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-bcm-kona.c gpio: bcm281xx: Use "unsigned gpio" consistently throughout the code 2014-02-06 10:33:47 +01:00
gpio-bt8xx.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-clps711x.c gpio: clps711x: Add missing .owner to struct gpio_chip 2014-02-06 10:33:48 +01:00
gpio-cs5535.c
gpio-da9052.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-da9055.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-davinci.c gpio: davinci: fix gpio selection for OF 2014-03-11 11:14:19 +01:00
gpio-dwapb.c gpio: add a driver for the Synopsys DesignWare APB GPIO block 2014-03-05 08:59:45 +08:00
gpio-em.c Merge branch 'mark-irqs' into devel 2013-12-04 14:48:17 +01:00
gpio-ep93xx.c gpio: ep93xx: get rid of bogus __raw* accessors 2013-10-16 09:59:54 +02:00
gpio-f7188x.c gpio: f7188x: set can_sleep attribute 2014-01-07 19:02:01 +01:00
gpio-ge.c
gpio-generic.c gpio: generic: clamp retured value to [0,1] 2014-02-06 10:33:48 +01:00
gpio-grgpio.c gpio: grgpio: Staticize local symbols 2013-06-19 21:40:38 +02:00
gpio-ich.c gpio: ich: Add output levels cache support 2014-02-12 16:12:22 +01:00
gpio-intel-mid.c gpio: intel-mid: comments cleanup 2014-02-03 09:11:58 +01:00
gpio-iop.c ARM: plat-iop: pass physical base for GPIO 2013-09-20 23:05:19 +02:00
gpio-it8761e.c
gpio-janz-ttl.c gpio: use dev_get_platdata() 2013-08-16 15:24:35 +02:00
gpio-kempld.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-ks8695.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-lp3943.c gpio: lp3943: Remove redundant of_match_ptr helper 2014-01-21 08:29:00 +00:00
gpio-lpc32xx.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-lynxpoint.c Merge branch 'mark-irqs' into devel 2013-12-04 14:48:17 +01:00
gpio-max730x.c gpio: max730x: Remove redundant dev_set_drvdata 2014-01-02 13:54:34 +01:00
gpio-max732x.c gpio: max732x: Fix possible NULL pointer dereference on i2c_new_dummy error 2014-03-12 14:50:51 +01:00
gpio-max7300.c gpio: max7300: use devm_kzalloc() 2013-03-27 16:05:11 +01:00
gpio-max7301.c gpio: max7301: Reverting "Do not force SPI speed when using OF Platform" 2013-08-23 19:44:28 +02:00
gpio-mc9s08dz60.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-mc33880.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-mcp23s08.c gpio: mcp23s08: trivial: fixed coding style issues 2014-03-12 14:52:14 +01:00
gpio-ml-ioh.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-mm-lantiq.c
gpio-moxart.c gpio: moxart: remove redundant dev_err call in moxart_gpio_probe() 2013-12-20 10:22:19 +01:00
gpio-mpc8xxx.c powerpc/gpio: Fix the wrong GPIO input data on MPC8572/MPC8536 2013-12-03 13:10:48 +01:00
gpio-mpc5200.c
gpio-msic.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-msm-v1.c gpio_msm: Fix build error due to missing err.h 2013-07-31 00:34:31 +02:00
gpio-msm-v2.c GPIO tree bulk changes for v3.14 2014-01-21 10:09:12 -08:00
gpio-mvebu.c gpio: mvebu: use chained_irq_{enter,exit} for GIC compatibility 2014-02-12 16:23:58 +01:00
gpio-mxc.c gpio: mxc: Do not hard code return value 2014-01-02 13:55:53 +01:00
gpio-mxs.c gpio: gpio-mxs: Remove unneeded dt checks 2013-11-06 10:51:24 +01:00
gpio-octeon.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-omap.c gpio: omap: Use devm_ioremap_resource() 2014-02-24 14:44:43 +01:00
gpio-palmas.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-pca953x.c gpio: pca953x: Fix gpio_base may not default to -1 2014-02-13 14:04:30 +01:00
gpio-pcf857x.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-pch.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-pl061.c gpio: gpio-pl061: Use %pa to print 'resource_size_t' 2014-03-07 09:19:38 +08:00
gpio-pxa.c gpio: pxa: clamp gpio get value to [0,1] 2014-01-15 08:56:20 +01:00
gpio-rc5t583.c gpio: rc5t583: Remove redundant check 2014-02-24 14:51:49 +01:00
gpio-rcar.c GPIO tree bulk changes for v3.14 2014-01-21 10:09:12 -08:00
gpio-rdc321x.c gpio: use dev_get_platdata() 2013-08-16 15:24:35 +02:00
gpio-sa1100.c ARM: 7841/1: sa1100: remove complex GPIO interface 2013-10-29 11:01:02 +00:00
gpio-samsung.c ARM: S5P[v210|c100|64x0]: Fix build error 2014-01-15 13:48:06 +01:00
gpio-sch311x.c gpio: sch311x: fix compilation error 2013-12-23 18:12:48 +01:00
gpio-sch.c gpio: Don't override the error code in probe error handling 2013-05-20 20:27:30 +02:00
gpio-sodaville.c gpio: sodaville: fix some error return code on error path 2013-12-20 10:23:18 +01:00
gpio-spear-spics.c drivers/gpio: simplify use of devm_ioremap_resource 2013-08-16 17:16:31 +02:00
gpio-sta2x11.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-stmpe.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-stp-xway.c gpio: gpio-stp-xway.c: fix checkpatch error 2013-03-27 16:05:16 +01:00
gpio-sx150x.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-tb10x.c gpio: tb10x: Remove redundant of_match_ptr helper 2014-01-02 14:03:22 +01:00
gpio-tc3589x.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-tegra.c gpio: tegra: add missing error handling to probe 2013-12-11 13:37:48 +01:00
gpio-timberdale.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-tps6586x.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-tps65910.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-tps65912.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-ts5500.c gpio: use dev_get_platdata() 2013-08-16 15:24:35 +02:00
gpio-twl4030.c GPIO tree bulk changes for v3.14 2014-01-21 10:09:12 -08:00
gpio-twl6040.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-tz1090-pdc.c gpio-tz1090-pdc: add TZ1090 PDC gpio driver 2013-07-20 19:03:48 +02:00
gpio-tz1090.c gpio-tz1090: Replace commas with semi-colons 2014-03-07 11:57:00 +08:00
gpio-ucb1400.c Linux 3.13-rc3 2013-12-09 14:04:37 +01:00
gpio-viperboard.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-vr41xx.c
gpio-vx855.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-wm831x.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-wm8350.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-wm8994.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-xilinx.c GPIO: xilinx: Use BIT macro 2013-06-17 07:47:33 +02:00
gpio-xtensa.c gpio: driver for Xtensa GPIO32 2013-12-12 14:33:14 +01:00
gpio-zevio.c gpio: New driver for LSI ZEVIO SoCs 2014-02-27 10:30:42 +01:00
gpiolib-acpi.c gpio / ACPI: Rework ACPI GPIO event handling 2014-03-13 15:15:43 +01:00
gpiolib-of.c gpio: gpiolib-of: Use PTR_ERR_OR_ZERO 2014-02-06 10:33:46 +01:00
gpiolib.c gpio / ACPI: Rework ACPI GPIO event handling 2014-03-13 15:15:43 +01:00
gpiolib.h gpiolib: Allow GPIO chips to request their own GPIOs 2014-03-13 10:32:18 +01:00
Kconfig gpio: Spelling s/than/that/ 2014-03-12 15:54:54 +01:00
Makefile gpio: remove obsolete tnetv107x driver 2014-03-05 10:44:44 +08:00