[PATCH 4/9] thermal: mediatek: lvts: Add platform ops to support alternative conversion logic

[Laura Nao]

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 <laura.nao at collabora.com>
---
 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