mfd: Add ChromeOS EC implementation

This is the base EC implementation, which provides a high level
interface to the EC for use by the rest of the kernel. The actual
communcations is dealt with by a separate protocol driver which
registers itself with this interface.

Interrupts are passed on through a notifier.

A simple message structure is used to pass messages to the
protocol driver.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Che-Liang Chiou <clchiou@chromium.org>
Signed-off-by: Jonathan Kliegman <kliegs@chromium.org>
Signed-off-by: Luigi Semenzato <semenzato@chromium.org>
Signed-off-by: Olof Johansson <olofj@chromium.org>
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
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 c346941a2515..a8bafb560196 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -21,6 +21,14 @@ config MFD_88PM860X
           select individual components like voltage regulators, RTC and
           battery-charger under the corresponding menus.
 
+config MFD_CROS_EC
+        tristate "Support ChromeOS Embedded Controller"
+        help
+          If you say Y here you get support for the ChromeOS Embedded
+          Controller (EC) providing keyboard, battery and power services.
+          You also ned to enable the driver for the bus you are using. The
+          protocol for talking to the EC is defined by the bus driver.
+
 config MFD_88PM800
         tristate "Support Marvell 88PM800"
         depends on I2C=y && GENERIC_HARDIRQS