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authorMilo Kim <milo.kim@ti.com>2013-12-06 11:18:41 +0900
committerLee Jones <lee.jones@linaro.org>2014-01-21 08:27:59 +0000
commit470eca47bded10f2e1a425b44d6f2b1418271a9f (patch)
tree9e302eabaeb9fd2edd3dfd3c28d821c109f60487 /drivers/mfd/Kconfig
parent0cc59b9d98d554168915b3765a14e8b4ad75918c (diff)
mfd: Add LP3943 MFD driver
LP3943 has 16 output pins which can be used as GPIO expander and PWM generator. * Regmap I2C interface for R/W LP3943 registers * Atomic operations for output pin assignment The driver should check whether requested pin is available or not. If the pin is already used, pin request returns as a failure. A driver data, 'pin_used' is checked when gpio_request() and pwm_request() are called. If the pin is available, then pin_used is set. And it is cleared when gpio_free() and pwm_free(). * Device tree support Compatible strings for GPIO and PWM driver. LP3943 platform data is PWM related, so parsing the device tree is implemented in the PWM driver. Signed-off-by: Milo Kim <milo.kim@ti.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd/Kconfig')
-rw-r--r--drivers/mfd/Kconfig11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index e54a6fd2a5bd..1c2a389e6dc2 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -738,6 +738,17 @@ config MFD_DM355EVM_MSP
boards. MSP430 firmware manages resets and power sequencing,
inputs from buttons and the IR remote, LEDs, an RTC, and more.
+config MFD_LP3943
+ tristate "TI/National Semiconductor LP3943 MFD Driver"
+ depends on I2C
+ select MFD_CORE
+ select REGMAP_I2C
+ help
+ Support for the TI/National Semiconductor LP3943.
+ This driver consists of GPIO and PWM drivers.
+ With these functionalities, it can be used for LED string control or
+ general usage such like a GPIO controller and a PWM controller.
+
config MFD_LP8788
bool "TI LP8788 Power Management Unit Driver"
depends on I2C=y