mfd: Add JZ4740 ADC driver

This patch adds a MFD driver for the JZ4740 ADC unit. The driver is used to
demultiplex IRQs and synchronize access to shared registers between the
battery, hwmon and (future) touchscreen driver.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 8f5145b4b56f..d59334f34bf6 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -514,6 +514,14 @@ 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"