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authorSimon Glass <sjg@chromium.org>2013-02-25 14:08:38 -0800
committerSamuel Ortiz <sameo@linux.intel.com>2013-04-05 11:20:13 +0200
commit89969009485fa9e62814afaa438c12c45d7d2def (patch)
tree91fda02a31a094727ade6f8bb35aebdd392b9e61 /drivers/mfd/Kconfig
parent4ab6174e8cdb007cf500e484bdf454b8d14d524a (diff)
downloadblackbird-op-linux-89969009485fa9e62814afaa438c12c45d7d2def.tar.gz
blackbird-op-linux-89969009485fa9e62814afaa438c12c45d7d2def.zip
mfd: Add ChromeOS EC I2C driver
This uses an I2C bus to talk to the ChromeOS EC. The protocol is defined by the EC and is fairly simple, with a length byte, checksum, command byte and version byte (to permit easy creation of new commands). Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Che-Liang Chiou <clchiou@chromium.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/Kconfig')
-rw-r--r--drivers/mfd/Kconfig10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index a8bafb560196..4e54b5b01295 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -29,6 +29,16 @@ config MFD_CROS_EC
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_CROS_EC_I2C
+ tristate "ChromeOS Embedded Controller (I2C)"
+ depends on MFD_CROS_EC && I2C
+
+ help
+ If you say Y here, you get support for talking to the ChromeOS
+ EC through an I2C bus. This uses a simple byte-level protocol with
+ a checksum. Failing accesses will be retried three times to
+ improve reliability.
+
config MFD_88PM800
tristate "Support Marvell 88PM800"
depends on I2C=y && GENERIC_HARDIRQS
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