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Gregory Fong 19a7b6940b 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>
 		2015-08-13 13:13:26 +02:00
..
Kconfig gpio: brcmstb: Add interrupt and wakeup source support 2015-08-13 13:13:26 +02:00
Makefile gpio: zx: Add ZTE zx296702 GPIO support 2015-07-16 10:14:45 +02:00
devres.c gpio: make flags mandatory for gpiod_get functions 2015-07-06 10:39:24 +02:00
gpio-74x164.c
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gpio-74xx-mmio.c gpio: 74xx: Fix build warning about void to integer cast 2015-07-16 13:59:47 +02:00
gpio-adnp.c
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gpio-adp5520.c
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gpio-adp5588.c gpio: kill off set_irq_flags usage 2015-07-28 09:45:39 +02:00
gpio-altera.c gpio: altera: use of_mm_gpiochip_remove() to fix memory leak 2015-07-16 00:11:03 +02:00
gpio-amd8111.c
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gpio-arizona.c
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gpio-bcm-kona.c gpio: kill off set_irq_flags usage 2015-07-28 09:45:39 +02:00
gpio-brcmstb.c gpio: brcmstb: Add interrupt and wakeup source support 2015-08-13 13:13:26 +02:00
gpio-bt8xx.c
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gpio-clps711x.c
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gpio-crystalcove.c gpio: Fix checkpatch.pl issues 2015-06-16 11:00:06 +02:00
gpio-cs5535.c
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gpio-da9052.c
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gpio-da9055.c
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gpio-davinci.c gpio: kill off set_irq_flags usage 2015-07-28 09:45:39 +02:00
gpio-dln2.c gpio: dln2: fix build breakage 2015-05-13 10:02:12 +02:00
gpio-dwapb.c gpio: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc 2015-07-14 12:12:20 +02:00
gpio-em.c gpio: kill off set_irq_flags usage 2015-07-28 09:45:39 +02:00
gpio-ep93xx.c gpio: kill off set_irq_flags usage 2015-07-28 09:45:39 +02:00
gpio-etraxfs.c gpio: etraxfs: add interrupt support 2015-08-03 10:57:04 +02:00
gpio-f7188x.c gpio: Fix checkpatch.pl issues 2015-06-16 11:00:06 +02:00
gpio-ge.c
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gpio-generic.c gpio: generic: support input-only chips 2015-07-27 15:01:05 +02:00
gpio-grgpio.c gpio: kill off set_irq_flags usage 2015-07-28 09:45:39 +02:00
gpio-ich.c
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gpio-intel-mid.c
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gpio-iop.c
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gpio-it8761e.c gpio: Fix checkpatch.pl issues 2015-06-16 11:00:06 +02:00
gpio-janz-ttl.c
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gpio-kempld.c gpio: gpio-kempld: Fix get_direction return value 2015-05-12 13:49:13 +02:00
gpio-ks8695.c
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gpio-loongson.c
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gpio-lp3943.c
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gpio-lpc18xx.c gpio: add lpc18xx gpio driver 2015-05-05 17:50:07 +02:00
gpio-lpc32xx.c
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gpio-lynxpoint.c Drivers: gpio: Fix spelling errors 2015-05-19 16:52:30 +02:00
gpio-max730x.c
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gpio-max732x.c gpio: max732x: Fix irq-events handler 2015-05-06 15:08:54 +02:00
gpio-max7300.c
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gpio-max7301.c
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gpio-mb86s7x.c
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gpio-mc9s08dz60.c
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gpio-mc33880.c
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gpio-mcp23s08.c gpio: kill off set_irq_flags usage 2015-07-28 09:45:39 +02:00
gpio-ml-ioh.c
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gpio-mm-lantiq.c
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gpio-moxart.c gpio: moxart: get value of output gpio from generic driver 2015-05-11 11:51:29 +02:00
gpio-mpc8xxx.c gpio: mpc8xxx: Convert mpc8xxx_gpio_chip.lock to raw_spinlock 2015-07-28 14:40:11 +02:00
gpio-mpc5200.c
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gpio-msic.c gpio/msic: Fix race in installing chained IRQ handler 2015-06-25 11:56:50 +02:00
gpio-msm-v2.c gpio: kill off set_irq_flags usage 2015-07-28 09:45:39 +02:00
gpio-mvebu.c gpio/mvebu: Prepare mvebu_gpio_irq_handler for irq argument removal 2015-07-14 12:12:20 +02:00
gpio-mxc.c gpio: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc 2015-07-14 12:12:20 +02:00
gpio-mxs.c gpio: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc 2015-07-14 12:12:20 +02:00
gpio-octeon.c
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gpio-omap.c gpio: omap: use raw locks for locking 2015-07-27 14:49:00 +02:00
gpio-palmas.c
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gpio-pca953x.c gpio: Prevent an integer overflow in the pca953x driver 2015-06-01 16:53:55 +02:00
gpio-pcf857x.c gpio: pcf857x: get rid of slock spinlock 2015-07-16 10:44:57 +02:00
gpio-pch.c gpio/pch: Use irq_set_handler_locked() 2015-07-14 12:12:20 +02:00
gpio-pl061.c
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gpio-pxa.c gpio: kill off set_irq_flags usage 2015-07-28 09:45:39 +02:00
gpio-rc5t583.c
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gpio-rcar.c gpio: rcar: Add r8a7795 (R-Car H3) support 2015-07-27 14:51:40 +02:00
gpio-rdc321x.c
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gpio-sa1100.c gpio: kill off set_irq_flags usage 2015-07-28 09:45:39 +02:00
gpio-samsung.c
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gpio-sch.c
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gpio-sch311x.c
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gpio-sodaville.c gpio: Constify irq_domain_ops 2015-05-06 15:33:48 +02:00
gpio-spear-spics.c
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gpio-sta2x11.c gpio: kill off set_irq_flags usage 2015-07-28 09:45:39 +02:00
gpio-stmpe.c
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gpio-stp-xway.c gpio: stp-xway: Use the of_property_read_u32 helper 2015-06-02 11:22:02 +02:00
gpio-sx150x.c
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gpio-syscon.c
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gpio-tb10x.c gpio: tb10x: Drop unneeded free_irq() call 2015-06-02 11:25:42 +02:00
gpio-tc3589x.c
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gpio-tegra.c gpio: kill off set_irq_flags usage 2015-07-28 09:45:39 +02:00
gpio-timberdale.c gpio: kill off set_irq_flags usage 2015-07-28 09:45:39 +02:00
gpio-tps6586x.c
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gpio-tps65910.c
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gpio-tps65912.c
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gpio-ts5500.c gpio: Constify platform_device_id 2015-05-12 09:41:28 +02:00
gpio-twl4030.c
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gpio-twl6040.c
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gpio-tz1090-pdc.c
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gpio-tz1090.c gpio/tz1090: Consolidate chained IRQ handler install/remove 2015-07-14 12:12:19 +02:00
gpio-ucb1400.c
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gpio-vf610.c gpio: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc 2015-07-14 12:12:20 +02:00
gpio-viperboard.c
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gpio-vr41xx.c
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gpio-vx855.c
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gpio-wm831x.c
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gpio-wm8350.c
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gpio-wm8994.c
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gpio-xgene-sb.c gpio: xgene: add ACPI support for APM X-Gene GPIO standby driver 2015-06-02 14:52:00 +02:00
gpio-xgene.c
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gpio-xilinx.c gpio: xilinx: Fix kernel-doc warnings 2015-05-12 09:56:26 +02:00
gpio-xlp.c gpio: xlp: Add missing .owner and .label settings for gpio_chip 2015-05-12 13:23:24 +02:00
gpio-xtensa.c
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gpio-zevio.c
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gpio-zx.c gpio: zx: Add ZTE zx296702 GPIO support 2015-07-16 10:14:45 +02:00
gpio-zynq.c Merge branch 'queue/irq/gpio' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into devel 2015-07-17 14:45:31 +02:00
gpiolib-acpi.c gpio / ACPI: Return -EPROBE_DEFER if the gpiochip was not found 2015-06-11 10:17:32 +02:00
gpiolib-legacy.c
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gpiolib-of.c gpio: defer probe if pinctrl cannot be found 2015-07-28 13:55:36 +02:00
gpiolib-sysfs.c gpio: sysfs: move irq trigger flags to class-device data 2015-05-12 10:47:57 +02:00
gpiolib.c gpio: don't override irq_*_resources() callbacks 2015-08-03 10:52:02 +02:00
gpiolib.h gpio: sysfs: move irq trigger flags to class-device data 2015-05-12 10:47:57 +02:00