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gpio: Add support for Intel ICHx/3100/Series[56] GPIO

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This driver works on many Intel chipsets, including the ICH6, ICH7,
ICH8, ICH9, ICH10, 3100, Series 5/3400 (Ibex Peak), Series 6/C200
(Cougar Point), and NM10 (Tiger Point).

Additional Intel chipsets should be easily supported if needed, eg the
ICH1-5, EP80579, etc.

Tested on QM67 (Cougar Point), QM57 (Ibex Peak), 3100 (Whitmore Lake),
and NM10 (Tiger Point).

Includes work from Jean Delvare:
        - Resource leak removal during module load/unload
        - GPIO API bit value enforcement

Also includes code cleanup from Guenter Roeck and Grant Likely.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Peter Tyser
2012-04-18 09:48:24 -05:00
committed by Samuel Ortiz
parent 4630b130b3
commit 6ed9f9c405
4 changed files with 439 additions and 0 deletions
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drivers/gpio/Kconfig
+13
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@@ -178,6 +178,19 @@ config GPIO_SCH
The Intel Tunnel Creek processor has 5 GPIOs powered by the
core power rail and 9 from suspend power supply.
config GPIO_ICH
tristate "Intel ICH GPIO"
depends on PCI && X86
select MFD_CORE
select LPC_ICH
help
Say yes here to support the GPIO functionality of a number of Intel
ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
If unsure, say N.
config GPIO_VX855
tristate "VIA VX855/VX875 GPIO"
depends on PCI