Improve API to retrieve temperature information.
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: Gwendal Grignou gwendal@chromium.org --- include/linux/mfd/cros_ec_commands.h | 64 +++++++++++++++++++++++++--- 1 file changed, 57 insertions(+), 7 deletions(-)
diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h index d5d07a9957ec..9a84aad7475a 100644 --- a/include/linux/mfd/cros_ec_commands.h +++ b/include/linux/mfd/cros_ec_commands.h @@ -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 */ +/* 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