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mfd: cros_ec: add bus-specific proto v3 code

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Add proto v3 support to the SPI, I2C, and LPC.

Signed-off-by: Stephen Barber <smbarber@chromium.org>
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Tested-by: Gwendal Grignou <gwendal@chromium.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Stephen Barber
2015-06-09 13:04:46 +02:00
committed by Lee Jones
parent 2c7589af3c
commit d365407079
4 changed files with 569 additions and 58 deletions
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6
include/linux/mfd/cros_ec.h
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@@ -21,6 +21,12 @@
#include <linux/mfd/cros_ec_commands.h>
#include <linux/mutex.h>
/*
* The EC is unresponsive for a time after a reboot command. Add a
* simple delay to make sure that the bus stays locked.
*/
#define EC_REBOOT_DELAY_MS 50
/*
* Max bus-specific overhead incurred by request/responses.
* I2C requires 1 additional byte for requests.