CHROMIUM: mfd: chromeos_ec: add I2C pass-through and other firmware bits

Add an I2C adapter acting as a pass-through to send firmware update EC
commands from userspace (e.g. flashrom).
Also add sysfs nodes to get firmware version and other EC info.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BUG=chrome-os-partner:8865
TEST=on Daisy, run flashrom -p internal:bus=lpc -w ec.bin

Change-Id: Ib58b183da0e6c79d17689e057b24aae961fdd128
Reviewed-on: https://gerrit-int.chromium.org/17856
Commit-Ready: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>

diff --git a/drivers/mfd/chromeos_ec.c b/drivers/mfd/chromeos_ec.c
index 66a61c0..753da35 100644 (file)
--- a/drivers/mfd/chromeos_ec.c
+++ b/drivers/mfd/chromeos_ec.c
@@ -217,6 +217,14 @@ static struct mfd_cell cros_devs[] = {
                .name = "mkbp",
                .id = 1,
        },
+       {
+               .name = "cros_ec-fw",
+               .id = 2,
+       },
+       {
+               .name = "cros_ec-i2c",
+               .id = 3,
+       },
 };
 
 static int __devinit cros_ec_probe(struct i2c_client *client,