mfd: Add WM831x SPI support

Implement support for controlling WM831x and WM832x devices using SPI.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 2fb1e892331c..3a1493b8b5e5 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -329,6 +329,17 @@ config MFD_WM831X_I2C
           for accessing the device, additional drivers must be enabled in
           order to use the functionality of the device.
 
+config MFD_WM831X_SPI
+        bool "Support Wolfson Microelectronics WM831x/2x PMICs with SPI"
+        select MFD_CORE
+        select MFD_WM831X
+        depends on SPI_MASTER && GENERIC_HARDIRQS
+        help
+          Support for the Wolfson Microelecronics WM831x and WM832x PMICs
+          when controlled using SPI.  This driver provides common support
+          for accessing the device, additional drivers must be enabled in
+          order to use the functionality of the device.
+
 config MFD_WM8350
         bool
         depends on GENERIC_HARDIRQS