From f48eaf01b2f7212987166aae970b895c7e215466 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Mon, 3 Aug 2015 08:19:24 -0600 Subject: cros_ec: Support the LDO access method used by spring Add a driver to support the special LDO access used by spring. This is a custom method in the cros_ec protocol - it does not use an I2C pass-through. There are two implementation choices: 1. Write a special LDO driver which can talk across the EC. Duplicate all the logic from TPS65090 for retrying when the LDO fails to come up. 2. Write a special I2C bus driver which pretends to be a TPS65090 and transfers reads and writes using the LDO message. Either is distasteful. The latter method is chosen since it results in less code duplication and a fairly simple (30-line) implementation of the core logic. The crosec 'ldo' subcommand could be removed (since i2c md/mw will work instead) but is retained as a convenience. Signed-off-by: Simon Glass --- include/cros_ec.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/cros_ec.h') diff --git a/include/cros_ec.h b/include/cros_ec.h index 41951c39b6..0ad9d81243 100644 --- a/include/cros_ec.h +++ b/include/cros_ec.h @@ -350,7 +350,7 @@ int cros_ec_read_build_info(struct cros_ec_dev *dev, char **strp); * @param state new state of the LDO/FET : EC_LDO_STATE_ON|OFF * @return 0 if ok, -1 on error */ -int cros_ec_set_ldo(struct cros_ec_dev *dev, uint8_t index, uint8_t state); +int cros_ec_set_ldo(struct udevice *dev, uint8_t index, uint8_t state); /** * Read back a LDO / FET current state. @@ -360,7 +360,7 @@ int cros_ec_set_ldo(struct cros_ec_dev *dev, uint8_t index, uint8_t state); * @param state current state of the LDO/FET : EC_LDO_STATE_ON|OFF * @return 0 if ok, -1 on error */ -int cros_ec_get_ldo(struct cros_ec_dev *dev, uint8_t index, uint8_t *state); +int cros_ec_get_ldo(struct udevice *dev, uint8_t index, uint8_t *state); /** * Get access to the error reported when cros_ec_board_init() was called -- cgit