[PATCH 4/9] thermal: mediatek: lvts: Add platform ops to support alternative conversion logic
From: Laura Nao <hidden>
Date: 2025-07-21 08:16:22
Also in:
linux-devicetree, linux-mediatek, linux-pm, lkml
Subsystem:
the rest, thermal · Maintainers:
Linus Torvalds, Rafael J. Wysocki, Daniel Lezcano
Introduce lvts_platform_ops struct to support SoC-specific versions of lvts_raw_to_temp() and lvts_temp_to_raw() conversion functions. This is in preparation for supporting SoCs like MT8196/MT6991, which have a positive temp_factor and need a different lvts_temp_to_raw() implementation. Signed-off-by: Laura Nao <redacted> --- drivers/thermal/mediatek/lvts_thermal.c | 46 +++++++++++++++++++++++-- 1 file changed, 43 insertions(+), 3 deletions(-)
diff --git a/drivers/thermal/mediatek/lvts_thermal.c b/drivers/thermal/mediatek/lvts_thermal.c
index b80c2929ae74..db83137c7537 100644
--- a/drivers/thermal/mediatek/lvts_thermal.c
+++ b/drivers/thermal/mediatek/lvts_thermal.c@@ -125,8 +125,14 @@ struct lvts_ctrl_data { continue; \ else +struct lvts_platform_ops { + int (*lvts_raw_to_temp)(u32 raw_temp, int temp_factor); + u32 (*lvts_temp_to_raw)(int temperature, int temp_factor); +}; + struct lvts_data { const struct lvts_ctrl_data *lvts_ctrl; + struct lvts_platform_ops ops; int num_cal_offsets; int num_lvts_ctrl; int temp_factor;
@@ -296,6 +302,7 @@ static int lvts_get_temp(struct thermal_zone_device *tz, int *temp) struct lvts_ctrl *lvts_ctrl = container_of(lvts_sensor, struct lvts_ctrl, sensors[lvts_sensor->id]); const struct lvts_data *lvts_data = lvts_ctrl->lvts_data; + const struct lvts_platform_ops *ops = &lvts_data->ops; void __iomem *msr = lvts_sensor->msr; u32 value; int rc;
@@ -328,7 +335,7 @@ static int lvts_get_temp(struct thermal_zone_device *tz, int *temp) if (rc) return -EAGAIN; - *temp = lvts_raw_to_temp(value & 0xFFFF, lvts_data->temp_factor); + *temp = ops->lvts_raw_to_temp(value & 0xFFFF, lvts_data->temp_factor); return 0; }
@@ -396,10 +403,11 @@ static int lvts_set_trips(struct thermal_zone_device *tz, int low, int high) struct lvts_ctrl *lvts_ctrl = container_of(lvts_sensor, struct lvts_ctrl, sensors[lvts_sensor->id]); const struct lvts_data *lvts_data = lvts_ctrl->lvts_data; + const struct lvts_platform_ops *ops = &lvts_data->ops; void __iomem *base = lvts_sensor->base; - u32 raw_low = lvts_temp_to_raw(low != -INT_MAX ? low : LVTS_MINIMUM_THRESHOLD, + u32 raw_low = ops->lvts_temp_to_raw(low != -INT_MAX ? low : LVTS_MINIMUM_THRESHOLD, lvts_data->temp_factor); - u32 raw_high = lvts_temp_to_raw(high, lvts_data->temp_factor); + u32 raw_high = ops->lvts_temp_to_raw(high, lvts_data->temp_factor); bool should_update_thresh; lvts_sensor->low_thresh = low;
@@ -1751,6 +1759,10 @@ static const struct lvts_data mt7988_lvts_ap_data = { .temp_offset = LVTS_COEFF_B_MT7988, .gt_calib_bit_offset = 24, .num_cal_offsets = 3, + .ops = { + .lvts_raw_to_temp = lvts_raw_to_temp, + .lvts_temp_to_raw = lvts_temp_to_raw, + } }; static const struct lvts_data mt8186_lvts_data = {
@@ -1761,6 +1773,10 @@ static const struct lvts_data mt8186_lvts_data = { .gt_calib_bit_offset = 24, .def_calibration = 19000, .num_cal_offsets = 3, + .ops = { + .lvts_raw_to_temp = lvts_raw_to_temp, + .lvts_temp_to_raw = lvts_temp_to_raw, + } }; static const struct lvts_data mt8188_lvts_mcu_data = {
@@ -1771,6 +1787,10 @@ static const struct lvts_data mt8188_lvts_mcu_data = { .gt_calib_bit_offset = 20, .def_calibration = 35000, .num_cal_offsets = 3, + .ops = { + .lvts_raw_to_temp = lvts_raw_to_temp, + .lvts_temp_to_raw = lvts_temp_to_raw, + } }; static const struct lvts_data mt8188_lvts_ap_data = {
@@ -1781,6 +1801,10 @@ static const struct lvts_data mt8188_lvts_ap_data = { .gt_calib_bit_offset = 20, .def_calibration = 35000, .num_cal_offsets = 3, + .ops = { + .lvts_raw_to_temp = lvts_raw_to_temp, + .lvts_temp_to_raw = lvts_temp_to_raw, + } }; static const struct lvts_data mt8192_lvts_mcu_data = {
@@ -1791,6 +1815,10 @@ static const struct lvts_data mt8192_lvts_mcu_data = { .gt_calib_bit_offset = 24, .def_calibration = 35000, .num_cal_offsets = 3, + .ops = { + .lvts_raw_to_temp = lvts_raw_to_temp, + .lvts_temp_to_raw = lvts_temp_to_raw, + } }; static const struct lvts_data mt8192_lvts_ap_data = {
@@ -1801,6 +1829,10 @@ static const struct lvts_data mt8192_lvts_ap_data = { .gt_calib_bit_offset = 24, .def_calibration = 35000, .num_cal_offsets = 3, + .ops = { + .lvts_raw_to_temp = lvts_raw_to_temp, + .lvts_temp_to_raw = lvts_temp_to_raw, + } }; static const struct lvts_data mt8195_lvts_mcu_data = {
@@ -1811,6 +1843,10 @@ static const struct lvts_data mt8195_lvts_mcu_data = { .gt_calib_bit_offset = 24, .def_calibration = 35000, .num_cal_offsets = 3, + .ops = { + .lvts_raw_to_temp = lvts_raw_to_temp, + .lvts_temp_to_raw = lvts_temp_to_raw, + } }; static const struct lvts_data mt8195_lvts_ap_data = {
@@ -1821,6 +1857,10 @@ static const struct lvts_data mt8195_lvts_ap_data = { .gt_calib_bit_offset = 24, .def_calibration = 35000, .num_cal_offsets = 3, + .ops = { + .lvts_raw_to_temp = lvts_raw_to_temp, + .lvts_temp_to_raw = lvts_temp_to_raw, + } }; static const struct of_device_id lvts_of_match[] = {
--
2.39.5