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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2011-06-27 09:26:23 +0200 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2012-02-04 00:13:25 +0100 |
| commit | b43ab901d671e3e3cad425ea5e9a3c74e266dcdd (patch) | |
| tree | 9527497057e939c478ff8ac5760f71cafff3b996 /arch/x86/platform | |
| parent | ARM/mx35/3ds: gpio: add mc9s08dz60 gpio function (diff) | |
| download | linux-b43ab901d671e3e3cad425ea5e9a3c74e266dcdd.tar.xz linux-b43ab901d671e3e3cad425ea5e9a3c74e266dcdd.zip | |
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>
Diffstat (limited to 'arch/x86/platform')
| -rw-r--r-- | arch/x86/platform/ce4100/falconfalls.dts | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/platform/ce4100/falconfalls.dts b/arch/x86/platform/ce4100/falconfalls.dts index e70be38ce039..ce874f872cc6 100644 --- a/arch/x86/platform/ce4100/falconfalls.dts +++ b/arch/x86/platform/ce4100/falconfalls.dts @@ -208,16 +208,19 @@ interrupts = <14 1>; }; - gpio@b,1 { + pcigpio: gpio@b,1 { + #gpio-cells = <2>; + #interrupt-cells = <2>; compatible = "pci8086,2e67.2", "pci8086,2e67", "pciclassff0000", "pciclassff00"; - #gpio-cells = <2>; reg = <0x15900 0x0 0x0 0x0 0x0>; interrupts = <15 1>; + interrupt-controller; gpio-controller; + intel,muxctl = <0>; }; i2c-controller@b,2 { |