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Merge series "Add support for voltage regulator on ChromeOS EC." from Pi-Hsun Shih <pihsun@chromium.org>:

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Add support for controlling voltage regulator that is connected and
controlled by ChromeOS EC. Kernel controls these regulators through
newly added EC host commands.

Changes from v5:
* Move new host command to a separate patch.
* Use devm_regulator_register.
* Address review comments.

Changes from v4:
* Change compatible name from regulator-cros-ec to cros-ec-regulator.

Changes from v3:
* Fix dt bindings file name.
* Remove check around CONFIG_OF in driver.
* Add new host commands to cros_ec_trace.
* Address review comments.

Changes from v2:
* Add 'depends on OF' to Kconfig.
* Add Kconfig description about compiling as module.

Changes from v1:
* Change compatible string to google,regulator-cros-ec.
* Use reg property in device tree.
* Change license for dt binding according to checkpatch.pl.
* Address comments on code styles.

Pi-Hsun Shih (3):
  dt-bindings: regulator: Add DT binding for cros-ec-regulator
  platform/chrome: cros_ec: Add command for regulator control.
  regulator: Add driver for cros-ec-regulator

 .../regulator/google,cros-ec-regulator.yaml   |  51 ++++
 drivers/platform/chrome/cros_ec_trace.c       |   5 +
 drivers/regulator/Kconfig                     |  10 +
 drivers/regulator/Makefile                    |   1 +
 drivers/regulator/cros-ec-regulator.c         | 257 ++++++++++++++++++
 .../linux/platform_data/cros_ec_commands.h    |  82 ++++++
 6 files changed, 406 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/google,cros-ec-regulator.yaml
 create mode 100644 drivers/regulator/cros-ec-regulator.c

base-commit: b791d1bdf9
--
2.27.0.290.gba653c62da-goog
This commit is contained in:
Mark Brown
2020-06-15 23:06:31 +01:00
parent d3f3723387 8d9f8d57e0
commit 0ac87aed5b
6 changed files with 406 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/linux/platform_data/cros_ec_commands.h
+82
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. */