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mfd: cros_ec: Fix temperature API 

Improve API to retrieve temperature information.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Acked-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Fabien Lahoudere <fabien.lahoudere@collabora.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Gwendal Grignou 2019-06-03 11:33:49 -07:00 committed by Lee Jones
parent 716bf50ea8
commit 170309b438
1 changed files with 58 additions and 8 deletions
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66
include/linux/mfd/cros_ec_commands.h
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@ -2945,9 +2945,28 @@ enum ec_temp_thresholds {
/*
* Thermal configuration for one temperature sensor. Temps are in degrees K.
* Zero values will be silently ignored by the thermal task.
*
* Set 'temp_host' value allows thermal task to trigger some event with 1 degree
* hysteresis.
* For example,
* temp_host[EC_TEMP_THRESH_HIGH] = 300 K
* temp_host_release[EC_TEMP_THRESH_HIGH] = 0 K
* EC will throttle ap when temperature >= 301 K, and release throttling when
* temperature <= 299 K.
*
* Set 'temp_host_release' value allows thermal task has a custom hysteresis.
* For example,
* temp_host[EC_TEMP_THRESH_HIGH] = 300 K
* temp_host_release[EC_TEMP_THRESH_HIGH] = 295 K
* EC will throttle ap when temperature >= 301 K, and release throttling when
* temperature <= 294 K.
*
* Note that this structure is a sub-structure of
* ec_params_thermal_set_threshold_v1, but maintains its alignment there.
*/
struct ec_thermal_config {
uint32_t temp_host[EC_TEMP_THRESH_COUNT]; /* levels of hotness */
uint32_t temp_host_release[EC_TEMP_THRESH_COUNT]; /* release levels */
uint32_t temp_fan_off; /* no active cooling needed */
uint32_t temp_fan_max; /* max active cooling needed */
} __ec_align4;
@ -2973,32 +2992,63 @@ struct ec_params_thermal_set_threshold_v1 {
/* Toggle automatic fan control */
#define EC_CMD_THERMAL_AUTO_FAN_CTRL 0x0052
/* Get TMP006 calibration data */
#define EC_CMD_TMP006_GET_CALIBRATION 0x0053
/* Version 1 of input params */
struct ec_params_auto_fan_ctrl_v1 {
uint8_t fan_idx;
} __ec_align1;
/* Get/Set TMP006 calibration data */
#define EC_CMD_TMP006_GET_CALIBRATION 0x0053
#define EC_CMD_TMP006_SET_CALIBRATION 0x0054
/*
* The original TMP006 calibration only needed four params, but now we need
* more. Since the algorithm is nothing but magic numbers anyway, we'll leave
* the params opaque. The v1 "get" response will include the algorithm number
* and how many params it requires. That way we can change the EC code without
* needing to update this file. We can also use a different algorithm on each
* sensor.
*/
/* This is the same struct for both v0 and v1. */
struct ec_params_tmp006_get_calibration {
uint8_t index;
} __ec_align1;
struct ec_response_tmp006_get_calibration {
/* Version 0 */
struct ec_response_tmp006_get_calibration_v0 {
float s0;
float b0;
float b1;
float b2;
} __ec_align4;
/* Set TMP006 calibration data */
#define EC_CMD_TMP006_SET_CALIBRATION 0x0054
struct ec_params_tmp006_set_calibration {
struct ec_params_tmp006_set_calibration_v0 {
uint8_t index;
uint8_t reserved[3]; /* Reserved; set 0 */
uint8_t reserved[3];
float s0;
float b0;
float b1;
float b2;
} __ec_align4;
/* Version 1 */
struct ec_response_tmp006_get_calibration_v1 {
uint8_t algorithm;
uint8_t num_params;
uint8_t reserved[2];
float val[0];
} __ec_align4;
struct ec_params_tmp006_set_calibration_v1 {
uint8_t index;
uint8_t algorithm;
uint8_t num_params;
uint8_t reserved;
float val[0];
} __ec_align4;
/* Read raw TMP006 data */
#define EC_CMD_TMP006_GET_RAW 0x0055