mfd: twl4030-gpio driver

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 <[email protected]> Signed-off-by: Tony Lindgren <[email protected]> Signed-off-by: Samuel Ortiz <[email protected]>
mrcsosa · Oct 21, 2008 · e9d3594 · e9d3594
1 parent f96411a
commit e9d3594
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diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
@@ -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

diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
@@ -9,4 +9,5 @@ obj-$(CONFIG_GPIO_MAX732X)	+= max732x.o
 obj-$(CONFIG_GPIO_MCP23S08)	+= mcp23s08.o
 obj-$(CONFIG_GPIO_PCA953X)	+= pca953x.o
 obj-$(CONFIG_GPIO_PCF857X)	+= pcf857x.o
+obj-$(CONFIG_GPIO_TWL4030)	+= twl4030-gpio.o
 obj-$(CONFIG_GPIO_BT8XX)	+= bt8xxgpio.o