mfd: Fix wm8994_device_init() return value

[firefly-linux-kernel-4.4.55.git] / drivers / mfd / Kconfig

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 9da0e504bbe9c67fe5264ae9c6188e157e036506..23a891f396e42db2a8c60c26b13c8c20269840f8 100644 (file)
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -7,7 +7,16 @@ menuconfig MFD_SUPPORT
        depends on HAS_IOMEM
        default y
        help
-         Configure MFD device drivers.
+         Multifunction devices embed several functions (e.g. GPIOs,
+         touchscreens, keyboards, current regulators, power management chips,
+         etc...) in one single integrated circuit. They usually talk to the
+         main CPU through one or more IRQ lines and low speed data busses (SPI,
+         I2C, etc..). They appear as one single device to the main system
+         through the data bus and the MFD framework allows for sub devices
+         (a.k.a. functions) to appear as discrete platform devices.
+         MFDs are typically found on embedded platforms.
+
+         This option alone does not add any kernel code.
 
 if MFD_SUPPORT
 
@@ -177,6 +186,38 @@ config TWL4030_CODEC
        select MFD_CORE
        default n
 
+config TWL6030_PWM
+       tristate "TWL6030 PWM (Pulse Width Modulator) Support"
+       depends on TWL4030_CORE
+       select HAVE_PWM
+       default n
+       help
+         Say yes here if you want support for TWL6030 PWM.
+         This is used to control charging LED brightness.
+
+config MFD_STMPE
+       bool "Support STMicroelectronics STMPE"
+       depends on I2C=y && GENERIC_HARDIRQS
+       select MFD_CORE
+       help
+         Support for the STMPE family of I/O Expanders from
+         STMicroelectronics.
+
+         Currently supported devices are:
+
+               STMPE811: GPIO, Touchscreen
+               STMPE1601: GPIO, Keypad
+               STMPE2401: GPIO, Keypad
+               STMPE2403: GPIO, Keypad
+
+         This driver provides common support for accessing the device,
+         additional drivers must be enabled in order to use the functionality
+         of the device.  Currently available sub drivers are:
+
+               GPIO: stmpe-gpio
+               Keypad: stmpe-keypad
+               Touchscreen: stmpe-ts
+
 config MFD_TC35892
        bool "Support Toshiba TC35892"
        depends on I2C=y && GENERIC_HARDIRQS
@@ -482,6 +523,14 @@ config MFD_JANZ_CMODIO
          host many different types of MODULbus daughterboards, including
          CAN and GPIO controllers.
 
+config MFD_JZ4740_ADC
+       tristate "Support for the JZ4740 SoC ADC core"
+       select MFD_CORE
+       depends on MACH_JZ4740
+       help
+         Say yes here if you want support for the ADC unit in the JZ4740 SoC.
+         This driver is necessary for jz4740-battery and jz4740-hwmon driver.
+
 endif # MFD_SUPPORT
 
 menu "Multimedia Capabilities Port drivers"