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ec/google/chromeec: Add wrappers to get/set the voltage

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Add APIs to get and set the voltage for the target regulator.

BUG=b:147789962
BRANCH=none
TEST=emerge-asurada coreboot

Change-Id: I0e56df45fc3309c387b9949534334eadefb616b2
Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46404
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
This commit is contained in:
Yidi Lin 2020-09-21 20:25:54 +08:00 committed by Hung-Te Lin
parent 5611cfd55f
commit 79a812e536
2 changed files with 65 additions and 0 deletions
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47
src/ec/google/chromeec/ec.c
View file

@ -1616,3 +1616,50 @@ int google_chromeec_ap_reset(void)
return 0;
}
int google_chromeec_regulator_set_voltage(uint32_t index, uint32_t min_mv,
uint32_t max_mv)
{
struct ec_params_regulator_set_voltage params = {
.index = index,
.min_mv = min_mv,
.max_mv = max_mv,
};
struct chromeec_command cmd = {
.cmd_code = EC_CMD_REGULATOR_SET_VOLTAGE,
.cmd_version = 0,
.cmd_data_in = &params,
.cmd_size_in = sizeof(params),
.cmd_data_out = NULL,
.cmd_size_out = 0,
.cmd_dev_index = 0,
};
if (google_chromeec_command(&cmd))
return -1;
return 0;
}
int google_chromeec_regulator_get_voltage(uint32_t index, uint32_t *voltage_mv)
{
struct ec_params_regulator_get_voltage params = {
.index = index,
};
struct ec_response_regulator_get_voltage resp = {};
struct chromeec_command cmd = {
.cmd_code = EC_CMD_REGULATOR_GET_VOLTAGE,
.cmd_version = 0,
.cmd_data_in = &params,
.cmd_size_in = sizeof(params),
.cmd_data_out = &resp,
.cmd_size_out = sizeof(resp),
.cmd_dev_index = 0,
};
if (google_chromeec_command(&cmd))
return -1;
*voltage_mv = resp.voltage_mv;
return 0;
}

18
src/ec/google/chromeec/ec.h
View file

@ -353,6 +353,24 @@ int google_chromeec_get_keybd_config(struct ec_response_keybd_config *keybd);
*/
int google_chromeec_ap_reset(void);
/**
* Set voltage for the voltage regulator within the range specified.
* @param index Regulator ID
* @param min_mv Minimum voltage
* @param max_mv Maximum voltage
* @return 0 on success, -1 on error
*/
int google_chromeec_regulator_set_voltage(uint32_t index, uint32_t min_mv,
uint32_t max_mv);
/**
* Get the currently configured voltage for the voltage regulator.
* @param index Regulator ID
* @param *voltage_mv If successful, voltage_mv is filled with current voltage
* @return 0 on success, -1 on error
*/
int google_chromeec_regulator_get_voltage(uint32_t index, uint32_t *voltage_mv);
#if CONFIG(HAVE_ACPI_TABLES)
/**
* Writes USB Type-C PD related information to the SSDT