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mfd: twl4030-gpio driver

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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>
This commit is contained in:
David Brownell
2008-10-20 23:51:46 +02:00
committed by Samuel Ortiz
parent f96411ab73
commit e9d359471d
3 changed files with 529 additions and 0 deletions
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7
drivers/gpio/Kconfig
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@@ -127,6 +127,13 @@ config GPIO_PCF857X
This driver provides an in-kernel interface to those GPIOs using
platform-neutral GPIO calls.
config GPIO_TWL4030
tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
depends on TWL4030_CORE
help
Say yes here to access the GPIO signals of various multi-function
power management chips from Texas Instruments.
comment "PCI GPIO expanders:"
config GPIO_BT8XX