thermal: rockchip: fix channal invertion issue for px30

Change-Id: Ifed5628c18cece0658754095e718da39ac703413
Signed-off-by: Rocky Hao <rocky.hao@rock-chips.com>

Author: Rocky Hao

drivers/thermal/rockchip_thermal.c

@@ -222,11 +222,15 @@ struct rockchip_thermal_data {
 #define GRF_TSADC_TESTBIT_L			0x0e648
 #define GRF_TSADC_TESTBIT_H			0x0e64c
 
+#define PX30_GRF_SOC_CON2			0x0408
+
 #define GRF_SARADC_TESTBIT_ON			(0x10001 << 2)
 #define GRF_TSADC_TESTBIT_H_ON			(0x10001 << 2)
 #define GRF_TSADC_VCM_EN_L			(0x10001 << 7)
 #define GRF_TSADC_VCM_EN_H			(0x10001 << 7)
 
+#define GRF_CON_TSADC_CH_INV			(0x10001 << 1)
+
 #define MIN_TEMP				(-40000)
 #define MAX_TEMP				(125000)
 
@@ -635,6 +639,14 @@ static void rk_tsadcv3_initialize(struct regmap *grf, void __iomem *regs,
 			       regs + TSADCV2_AUTO_CON);
 }
 
+static void rk_tsadcv4_initialize(struct regmap *grf, void __iomem *regs,
+				  enum tshut_polarity tshut_polarity)
+{
+	rk_tsadcv2_initialize(grf, regs, tshut_polarity);
+	if (!IS_ERR(grf))
+		regmap_write(grf, PX30_GRF_SOC_CON2, GRF_CON_TSADC_CH_INV);
+}
+
 static void rk_tsadcv2_irq_ack(void __iomem *regs)
 {
 	u32 val;
@@ -879,7 +891,7 @@ static const struct rockchip_tsadc_chip px30_tsadc_data = {
 	.tshut_mode = TSHUT_MODE_CRU, /* default TSHUT via CRU */
 	.tshut_temp = 95000,
 
-	.initialize = rk_tsadcv2_initialize,
+	.initialize = rk_tsadcv4_initialize,
 	.irq_ack = rk_tsadcv3_irq_ack,
 	.control = rk_tsadcv3_control,
 	.get_temp = rk_tsadcv2_get_temp,