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platform/chrome: cros_ec: Add command for regulator control.

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Add host commands for voltage regulator control through ChromeOS EC.

Signed-off-by: Pi-Hsun Shih <pihsun@chromium.org>
Reviewed-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20200612040526.192878-3-pihsun@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Pi-Hsun Shih 2020-06-12 12:05:19 +08:00 committed by Mark Brown
parent 54bd53b9c1
commit dff08caf35
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 87 additions and 0 deletions
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5
drivers/platform/chrome/cros_ec_trace.c
View File

@ -161,6 +161,11 @@
TRACE_SYMBOL(EC_CMD_ADC_READ), \
TRACE_SYMBOL(EC_CMD_ROLLBACK_INFO), \
TRACE_SYMBOL(EC_CMD_AP_RESET), \
TRACE_SYMBOL(EC_CMD_REGULATOR_GET_INFO), \
TRACE_SYMBOL(EC_CMD_REGULATOR_ENABLE), \
TRACE_SYMBOL(EC_CMD_REGULATOR_IS_ENABLED), \
TRACE_SYMBOL(EC_CMD_REGULATOR_SET_VOLTAGE), \
TRACE_SYMBOL(EC_CMD_REGULATOR_GET_VOLTAGE), \
TRACE_SYMBOL(EC_CMD_CR51_BASE), \
TRACE_SYMBOL(EC_CMD_CR51_LAST), \
TRACE_SYMBOL(EC_CMD_FP_PASSTHRU), \

82
include/linux/platform_data/cros_ec_commands.h
View File

@ -5430,6 +5430,88 @@ struct ec_response_rollback_info {
/* Issue AP reset */
#define EC_CMD_AP_RESET 0x0125
/*****************************************************************************/
/* Voltage regulator controls */
/*
* Get basic info of voltage regulator for given index.
*
* Returns the regulator name and supported voltage list in mV.
*/
#define EC_CMD_REGULATOR_GET_INFO 0x012B
/* Maximum length of regulator name */
#define EC_REGULATOR_NAME_MAX_LEN 16
/* Maximum length of the supported voltage list. */
#define EC_REGULATOR_VOLTAGE_MAX_COUNT 16
struct ec_params_regulator_get_info {
uint32_t index;
} __ec_align4;
struct ec_response_regulator_get_info {
char name[EC_REGULATOR_NAME_MAX_LEN];
uint16_t num_voltages;
uint16_t voltages_mv[EC_REGULATOR_VOLTAGE_MAX_COUNT];
} __ec_align1;
/*
* Configure the regulator as enabled / disabled.
*/
#define EC_CMD_REGULATOR_ENABLE 0x012C
struct ec_params_regulator_enable {
uint32_t index;
uint8_t enable;
} __ec_align4;
/*
* Query if the regulator is enabled.
*
* Returns 1 if the regulator is enabled, 0 if not.
*/
#define EC_CMD_REGULATOR_IS_ENABLED 0x012D
struct ec_params_regulator_is_enabled {
uint32_t index;
} __ec_align4;
struct ec_response_regulator_is_enabled {
uint8_t enabled;
} __ec_align1;
/*
* Set voltage for the voltage regulator within the range specified.
*
* The driver should select the voltage in range closest to min_mv.
*
* Also note that this might be called before the regulator is enabled, and the
* setting should be in effect after the regulator is enabled.
*/
#define EC_CMD_REGULATOR_SET_VOLTAGE 0x012E
struct ec_params_regulator_set_voltage {
uint32_t index;
uint32_t min_mv;
uint32_t max_mv;
} __ec_align4;
/*
* Get the currently configured voltage for the voltage regulator.
*
* Note that this might be called before the regulator is enabled.
*/
#define EC_CMD_REGULATOR_GET_VOLTAGE 0x012F
struct ec_params_regulator_get_voltage {
uint32_t index;
} __ec_align4;
struct ec_response_regulator_get_voltage {
uint32_t voltage_mv;
} __ec_align4;
/*****************************************************************************/
/* The command range 0x200-0x2FF is reserved for Rotor. */