[RFC v1 3/3] thermal/drivers/mediatek/lvts_thermal: add mt7988 support

[Frank Wunderlich <linux@fw-web.de>]

From: Frank Wunderlich <frank-w@public-files.de>

Add Support for mediatek fologic 880/MT7988.

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
---
 drivers/thermal/mediatek/lvts_thermal.c | 73 +++++++++++++++++++++++++
 1 file changed, 73 insertions(+)

diff --git a/drivers/thermal/mediatek/lvts_thermal.c b/drivers/thermal/mediatek/lvts_thermal.c
index c1004b4da3b6..48b257a3c80e 100644
--- a/drivers/thermal/mediatek/lvts_thermal.c
+++ b/drivers/thermal/mediatek/lvts_thermal.c
@@ -82,6 +82,8 @@
 #define LVTS_GOLDEN_TEMP_DEFAULT	50
 #define LVTS_COEFF_A_MT8195			-250460
 #define LVTS_COEFF_B_MT8195			250460
+#define LVTS_COEFF_A_MT7988			-204650
+#define LVTS_COEFF_B_MT7988			204650
 
 #define LVTS_MSR_IMMEDIATE_MODE		0
 #define LVTS_MSR_FILTERED_MODE		1
@@ -1272,6 +1274,67 @@ static int lvts_remove(struct platform_device *pdev)
 	return 0;
 }
 
+/*
+ * LVTS MT7988
+ */
+#define LVTS_HW_SHUTDOWN_MT7988	117000
+//enum mt7988_lvts_domain { MT7988_AP_DOMAIN, MT7988_NUM_DOMAIN };
+
+enum mt7988_lvts_sensor_enum {
+	MT7988_TS3_0,
+	MT7988_TS3_1,
+	MT7988_TS3_2,
+	MT7988_TS3_3,
+	MT7988_TS4_0,
+	MT7988_TS4_1,
+	MT7988_TS4_2,
+	MT7988_TS4_3,
+	MT7988_NUM_TS
+};
+
+//Efuse base : 0x11f50000
+//lvts offset in efuse : 0x918 (set in efuse dts node as calibration data)
+//offsets:
+//918 = LVTS_3_0_COUNT_R
+//91C = LVTS_3_1_COUNT_R
+//920 = LVTS_3_2_COUNT_R
+//924 = LVTS_3_3_COUNT_R
+//928 = LVTS_3_COUNT_RC
+
+//92C = LVTS_4_0_COUNT_R
+//930 = LVTS_4_1_COUNT_R
+//934 = LVTS_4_2_COUNT_R
+//938 = LVTS_4_3_COUNT_R
+//93C = LVTS_4_COUNT_RC
+
+static const struct lvts_ctrl_data mt7988_lvts_data_ctrl[] = {
+	{
+		.cal_offset = { 0x00, 0x04, 0x08, 0x0c }, //918,91C,920,924
+		.lvts_sensor = {
+			{ .dt_id = MT7988_TS3_0 },
+			{ .dt_id = MT7988_TS3_1 },
+			{ .dt_id = MT7988_TS3_2 },
+			{ .dt_id = MT7988_TS3_3 }
+		},
+		.num_lvts_sensor = 4,
+		.offset = 0x0,
+		.hw_tshut_temp = LVTS_HW_SHUTDOWN_MT7988,
+	},
+	{
+		.cal_offset = { 0x14, 0x18, 0x1c, 0x20 }, //92C,930,934,938
+		.lvts_sensor = {
+			{ .dt_id = MT7988_TS4_0},
+			{ .dt_id = MT7988_TS4_1},
+			{ .dt_id = MT7988_TS4_2},
+			{ .dt_id = MT7988_TS4_3}
+		},
+		.num_lvts_sensor = 4,
+		.offset = 0x100,
+		.hw_tshut_temp = LVTS_HW_SHUTDOWN_MT7988,
+	}
+};
+
+//MT8195
 static const struct lvts_ctrl_data mt8195_lvts_mcu_data_ctrl[] = {
 	{
 		.cal_offset = { 0x04, 0x07 },
@@ -1351,6 +1414,15 @@ static const struct lvts_ctrl_data mt8195_lvts_ap_data_ctrl[] = {
 	}
 };
 
+static const struct lvts_data mt7988_lvts_data = {
+	.lvts_ctrl	= mt7988_lvts_data_ctrl,
+	.num_lvts_ctrl	= ARRAY_SIZE(mt7988_lvts_data_ctrl),
+	.coeff = {
+		.a = LVTS_COEFF_A_MT7988,
+		.b = LVTS_COEFF_B_MT7988,
+	},
+};
+
 static const struct lvts_data mt8195_lvts_mcu_data = {
 	.lvts_ctrl	= mt8195_lvts_mcu_data_ctrl,
 	.num_lvts_ctrl	= ARRAY_SIZE(mt8195_lvts_mcu_data_ctrl),
@@ -1372,6 +1444,7 @@ static const struct lvts_data mt8195_lvts_ap_data = {
 };
 
 static const struct of_device_id lvts_of_match[] = {
+	{ .compatible = "mediatek,mt7988-lvts", .data = &mt7988_lvts_data },
 	{ .compatible = "mediatek,mt8195-lvts-mcu", .data = &mt8195_lvts_mcu_data },
 	{ .compatible = "mediatek,mt8195-lvts-ap", .data = &mt8195_lvts_ap_data },
 	{},
-- 
2.34.1