[PATCH 0/2] Add Mediatek thermal driver for MT7622

[PATCH 0/2] Add Mediatek thermal driver for MT7622

[Henry Yen]

Mediatek owns two thermal systems, which are almost the same except for
the way of reading calibration data and converting temperature.
MT8173, MT2701, MT2712 and MT8183 belongs to version 1 thermal system,
and MT7622 belongs to version 2. The current code has already supported
version 1 system. Then this patchset adds the support for another
platform (e.g., MT7622 SoC).


Henry Yen (2):
  thermal: mediatek: prepare to add support for other platforms
  thermal: mediatek: add tsensor support for MT7622 SoC

 drivers/thermal/mtk_thermal.c | 244 ++++++++++++++++++++++++++--------
 1 file changed, 189 insertions(+), 55 deletions(-)

-- 
2.17.1

[PATCH 1/2] thermal: mediatek: prepare to add support for other platforms

[Henry Yen]

It is known that Mediatek owns two thermal system, which differs
in the way of reading calibration data and converting temperature.
MT8173, MT2701, MT2712 and MT8183 belongs to version 1 thermal
system, and MT7622 belongs to version 2 thermal system.
For platform compatibility, we add two sensor ops (extract and
convert) to the thermal data structure. Each platform will register
the sensor ops to the proper function implementation according to
its version.

Signed-off-by: Henry Yen <henry.yen@mediatek.com>
---
 drivers/thermal/mtk_thermal.c | 148 +++++++++++++++++++++-------------
 1 file changed, 93 insertions(+), 55 deletions(-)

diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
index 76e30603d4d5..13e17c31ba3b 100644
--- a/drivers/thermal/mtk_thermal.c
+++ b/drivers/thermal/mtk_thermal.c
@@ -120,18 +120,18 @@
  * MT2701 has 3 sensors and needs 3 VTS calibration data.
  * MT2712 has 4 sensors and needs 4 VTS calibration data.
  */
-#define CALIB_BUF0_VALID		BIT(0)
-#define CALIB_BUF1_ADC_GE(x)		(((x) >> 22) & 0x3ff)
-#define CALIB_BUF0_VTS_TS1(x)		(((x) >> 17) & 0x1ff)
-#define CALIB_BUF0_VTS_TS2(x)		(((x) >> 8) & 0x1ff)
-#define CALIB_BUF1_VTS_TS3(x)		(((x) >> 0) & 0x1ff)
-#define CALIB_BUF2_VTS_TS4(x)		(((x) >> 23) & 0x1ff)
-#define CALIB_BUF2_VTS_TS5(x)		(((x) >> 5) & 0x1ff)
-#define CALIB_BUF2_VTS_TSABB(x)		(((x) >> 14) & 0x1ff)
-#define CALIB_BUF0_DEGC_CALI(x)		(((x) >> 1) & 0x3f)
-#define CALIB_BUF0_O_SLOPE(x)		(((x) >> 26) & 0x3f)
-#define CALIB_BUF0_O_SLOPE_SIGN(x)	(((x) >> 7) & 0x1)
-#define CALIB_BUF1_ID(x)		(((x) >> 9) & 0x1)
+#define CALIB_BUF0_VALID_V1		BIT(0)
+#define CALIB_BUF1_ADC_GE_V1(x)		(((x) >> 22) & 0x3ff)
+#define CALIB_BUF0_VTS_TS1_V1(x)	(((x) >> 17) & 0x1ff)
+#define CALIB_BUF0_VTS_TS2_V1(x)	(((x) >> 8) & 0x1ff)
+#define CALIB_BUF1_VTS_TS3_V1(x)	(((x) >> 0) & 0x1ff)
+#define CALIB_BUF2_VTS_TS4_V1(x)	(((x) >> 23) & 0x1ff)
+#define CALIB_BUF2_VTS_TS5_V1(x)	(((x) >> 5) & 0x1ff)
+#define CALIB_BUF2_VTS_TSABB_V1(x)	(((x) >> 14) & 0x1ff)
+#define CALIB_BUF0_DEGC_CALI_V1(x)	(((x) >> 1) & 0x3f)
+#define CALIB_BUF0_O_SLOPE_V1(x)	(((x) >> 26) & 0x3f)
+#define CALIB_BUF0_O_SLOPE_SIGN_V1(x)	(((x) >> 7) & 0x1)
+#define CALIB_BUF1_ID_V1(x)		(((x) >> 9) & 0x1)
 
 enum {
 	VTS1,
@@ -143,6 +143,11 @@ enum {
 	MAX_NUM_VTS,
 };
 
+enum mtk_thermal_version {
+	MTK_THERMAL_V1 = 1,
+	MTK_THERMAL_V2,
+};
+
 /* MT2701 thermal sensors */
 #define MT2701_TS1	0
 #define MT2701_TS2	1
@@ -245,6 +250,9 @@ struct mtk_thermal_data {
 	const int *controller_offset;
 	bool need_switch_bank;
 	struct thermal_bank_cfg bank_data[MAX_NUM_ZONES];
+	enum mtk_thermal_version version;
+	int (*extract)(struct mtk_thermal *mt, u32 *buf);
+	int (*convert)(struct mtk_thermal *mt, int sensno, s32 raw);
 };
 
 struct mtk_thermal {
@@ -358,6 +366,9 @@ static const int mt7622_mux_values[MT7622_NUM_SENSORS] = { 0, };
 static const int mt7622_vts_index[MT7622_NUM_SENSORS] = { VTS1 };
 static const int mt7622_tc_offset[MT7622_NUM_CONTROLLER] = { 0x0, };
 
+static int mtk_thermal_extract_efuse_v1(struct mtk_thermal *mt, u32 *buf);
+static int raw_to_mcelsius_v1(struct mtk_thermal *mt, int sensno, s32 raw);
+
 /*
  * The MT8173 thermal controller has four banks. Each bank can read up to
  * four temperature sensors simultaneously. The MT8173 has a total of 5
@@ -398,6 +409,9 @@ static const struct mtk_thermal_data mt8173_thermal_data = {
 	.msr = mt8173_msr,
 	.adcpnp = mt8173_adcpnp,
 	.sensor_mux_values = mt8173_mux_values,
+	.version = MTK_THERMAL_V1,
+	.extract = mtk_thermal_extract_efuse_v1,
+	.convert = raw_to_mcelsius_v1,
 };
 
 /*
@@ -428,6 +442,9 @@ static const struct mtk_thermal_data mt2701_thermal_data = {
 	.msr = mt2701_msr,
 	.adcpnp = mt2701_adcpnp,
 	.sensor_mux_values = mt2701_mux_values,
+	.version = MTK_THERMAL_V1,
+	.extract = mtk_thermal_extract_efuse_v1,
+	.convert = raw_to_mcelsius_v1,
 };
 
 /*
@@ -458,6 +475,9 @@ static const struct mtk_thermal_data mt2712_thermal_data = {
 	.msr = mt2712_msr,
 	.adcpnp = mt2712_adcpnp,
 	.sensor_mux_values = mt2712_mux_values,
+	.version = MTK_THERMAL_V1,
+	.extract = mtk_thermal_extract_efuse_v1,
+	.convert = raw_to_mcelsius_v1,
 };
 
 /*
@@ -482,6 +502,9 @@ static const struct mtk_thermal_data mt7622_thermal_data = {
 	.msr = mt7622_msr,
 	.adcpnp = mt7622_adcpnp,
 	.sensor_mux_values = mt7622_mux_values,
+	.version = MTK_THERMAL_V2,
+	.extract = mtk_thermal_extract_efuse_v1,
+	.convert = raw_to_mcelsius_v1,
 };
 
 /*
@@ -514,6 +537,9 @@ static const struct mtk_thermal_data mt8183_thermal_data = {
 	.msr = mt8183_msr,
 	.adcpnp = mt8183_adcpnp,
 	.sensor_mux_values = mt8183_mux_values,
+	.version = MTK_THERMAL_V1,
+	.extract = mtk_thermal_extract_efuse_v1,
+	.convert = raw_to_mcelsius_v1,
 };
 
 /**
@@ -525,7 +551,7 @@ static const struct mtk_thermal_data mt8183_thermal_data = {
  * This converts the raw ADC value to mcelsius using the SoC specific
  * calibration constants
  */
-static int raw_to_mcelsius(struct mtk_thermal *mt, int sensno, s32 raw)
+static int raw_to_mcelsius_v1(struct mtk_thermal *mt, int sensno, s32 raw)
 {
 	s32 tmp;
 
@@ -594,9 +620,9 @@ static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank)
 		raw = readl(mt->thermal_base +
 			    conf->msr[conf->bank_data[bank->id].sensors[i]]);
 
-		temp = raw_to_mcelsius(mt,
-				       conf->bank_data[bank->id].sensors[i],
-				       raw);
+		temp = conf->convert(mt,
+				     conf->bank_data[bank->id].sensors[i],
+				     raw);
 
 		/*
 		 * The first read of a sensor often contains very high bogus
@@ -698,9 +724,11 @@ static void mtk_thermal_init_bank(struct mtk_thermal *mt, int num,
 	writel(auxadc_phys_base + AUXADC_CON1_CLR_V,
 	       controller_base + TEMP_ADCMUXADDR);
 
-	/* AHB address for pnp sensor mux selection */
-	writel(apmixed_phys_base + APMIXED_SYS_TS_CON1,
-	       controller_base + TEMP_PNPMUXADDR);
+	if (mt->conf->version == MTK_THERMAL_V1) {
+		/* AHB address for pnp sensor mux selection */
+		writel(apmixed_phys_base + APMIXED_SYS_TS_CON1,
+		       controller_base + TEMP_PNPMUXADDR);
+	}
 
 	/* AHB value for auxadc enable */
 	writel(BIT(conf->auxadc_channel), controller_base + TEMP_ADCEN);
@@ -758,6 +786,51 @@ static u64 of_get_phys_base(struct device_node *np)
 	return of_translate_address(np, regaddr_p);
 }
 
+static int mtk_thermal_extract_efuse_v1(struct mtk_thermal *mt, u32 *buf)
+{
+	int i;
+
+	if (!(buf[0] & CALIB_BUF0_VALID_V1))
+		return -EINVAL;
+
+	mt->adc_ge = CALIB_BUF1_ADC_GE_V1(buf[1]);
+
+	for (i = 0; i < mt->conf->num_sensors; i++) {
+		switch (mt->conf->vts_index[i]) {
+		case VTS1:
+			mt->vts[VTS1] = CALIB_BUF0_VTS_TS1_V1(buf[0]);
+			break;
+		case VTS2:
+			mt->vts[VTS2] = CALIB_BUF0_VTS_TS2_V1(buf[0]);
+			break;
+		case VTS3:
+			mt->vts[VTS3] = CALIB_BUF1_VTS_TS3_V1(buf[1]);
+			break;
+		case VTS4:
+			mt->vts[VTS4] = CALIB_BUF2_VTS_TS4_V1(buf[2]);
+			break;
+		case VTS5:
+			mt->vts[VTS5] = CALIB_BUF2_VTS_TS5_V1(buf[2]);
+			break;
+		case VTSABB:
+			mt->vts[VTSABB] =
+				CALIB_BUF2_VTS_TSABB_V1(buf[2]);
+			break;
+		default:
+			break;
+		}
+	}
+
+	mt->degc_cali = CALIB_BUF0_DEGC_CALI_V1(buf[0]);
+	if (CALIB_BUF1_ID_V1(buf[1]) &
+	    CALIB_BUF0_O_SLOPE_SIGN_V1(buf[0]))
+		mt->o_slope = -CALIB_BUF0_O_SLOPE_V1(buf[0]);
+	else
+		mt->o_slope = CALIB_BUF0_O_SLOPE_V1(buf[0]);
+
+	return 0;
+}
+
 static int mtk_thermal_get_calibration_data(struct device *dev,
 					    struct mtk_thermal *mt)
 {
@@ -793,43 +866,8 @@ static int mtk_thermal_get_calibration_data(struct device *dev,
 		goto out;
 	}
 
-	if (buf[0] & CALIB_BUF0_VALID) {
-		mt->adc_ge = CALIB_BUF1_ADC_GE(buf[1]);
-
-		for (i = 0; i < mt->conf->num_sensors; i++) {
-			switch (mt->conf->vts_index[i]) {
-			case VTS1:
-				mt->vts[VTS1] = CALIB_BUF0_VTS_TS1(buf[0]);
-				break;
-			case VTS2:
-				mt->vts[VTS2] = CALIB_BUF0_VTS_TS2(buf[0]);
-				break;
-			case VTS3:
-				mt->vts[VTS3] = CALIB_BUF1_VTS_TS3(buf[1]);
-				break;
-			case VTS4:
-				mt->vts[VTS4] = CALIB_BUF2_VTS_TS4(buf[2]);
-				break;
-			case VTS5:
-				mt->vts[VTS5] = CALIB_BUF2_VTS_TS5(buf[2]);
-				break;
-			case VTSABB:
-				mt->vts[VTSABB] = CALIB_BUF2_VTS_TSABB(buf[2]);
-				break;
-			default:
-				break;
-			}
-		}
-
-		mt->degc_cali = CALIB_BUF0_DEGC_CALI(buf[0]);
-		if (CALIB_BUF1_ID(buf[1]) &
-		    CALIB_BUF0_O_SLOPE_SIGN(buf[0]))
-			mt->o_slope = -CALIB_BUF0_O_SLOPE(buf[0]);
-		else
-			mt->o_slope = CALIB_BUF0_O_SLOPE(buf[0]);
-	} else {
+	if (mt->conf->extract(mt, buf))
 		dev_info(dev, "Device not calibrated, using default calibration values\n");
-	}
 
 out:
 	kfree(buf);
-- 
2.17.1

Re: [PATCH 1/2] thermal: mediatek: prepare to add support for other platforms

[Matthias Brugger]

On 19/03/2020 10:54, Henry Yen wrote:
> It is known that Mediatek owns two thermal system, which differs
> in the way of reading calibration data and converting temperature.
> MT8173, MT2701, MT2712 and MT8183 belongs to version 1 thermal
> system, and MT7622 belongs to version 2 thermal system.
> For platform compatibility, we add two sensor ops (extract and
> convert) to the thermal data structure. Each platform will register
> the sensor ops to the proper function implementation according to
> its version.
> 
> Signed-off-by: Henry Yen <henry.yen@mediatek.com>
> ---
>  drivers/thermal/mtk_thermal.c | 148 +++++++++++++++++++++-------------
>  1 file changed, 93 insertions(+), 55 deletions(-)
> 
> diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
> index 76e30603d4d5..13e17c31ba3b 100644
> --- a/drivers/thermal/mtk_thermal.c
> +++ b/drivers/thermal/mtk_thermal.c
> @@ -120,18 +120,18 @@
>   * MT2701 has 3 sensors and needs 3 VTS calibration data.
>   * MT2712 has 4 sensors and needs 4 VTS calibration data.
>   */
> -#define CALIB_BUF0_VALID		BIT(0)
> -#define CALIB_BUF1_ADC_GE(x)		(((x) >> 22) & 0x3ff)
> -#define CALIB_BUF0_VTS_TS1(x)		(((x) >> 17) & 0x1ff)
> -#define CALIB_BUF0_VTS_TS2(x)		(((x) >> 8) & 0x1ff)
> -#define CALIB_BUF1_VTS_TS3(x)		(((x) >> 0) & 0x1ff)
> -#define CALIB_BUF2_VTS_TS4(x)		(((x) >> 23) & 0x1ff)
> -#define CALIB_BUF2_VTS_TS5(x)		(((x) >> 5) & 0x1ff)
> -#define CALIB_BUF2_VTS_TSABB(x)		(((x) >> 14) & 0x1ff)
> -#define CALIB_BUF0_DEGC_CALI(x)		(((x) >> 1) & 0x3f)
> -#define CALIB_BUF0_O_SLOPE(x)		(((x) >> 26) & 0x3f)
> -#define CALIB_BUF0_O_SLOPE_SIGN(x)	(((x) >> 7) & 0x1)
> -#define CALIB_BUF1_ID(x)		(((x) >> 9) & 0x1)
> +#define CALIB_BUF0_VALID_V1		BIT(0)
> +#define CALIB_BUF1_ADC_GE_V1(x)		(((x) >> 22) & 0x3ff)
> +#define CALIB_BUF0_VTS_TS1_V1(x)	(((x) >> 17) & 0x1ff)
> +#define CALIB_BUF0_VTS_TS2_V1(x)	(((x) >> 8) & 0x1ff)
> +#define CALIB_BUF1_VTS_TS3_V1(x)	(((x) >> 0) & 0x1ff)
> +#define CALIB_BUF2_VTS_TS4_V1(x)	(((x) >> 23) & 0x1ff)
> +#define CALIB_BUF2_VTS_TS5_V1(x)	(((x) >> 5) & 0x1ff)
> +#define CALIB_BUF2_VTS_TSABB_V1(x)	(((x) >> 14) & 0x1ff)
> +#define CALIB_BUF0_DEGC_CALI_V1(x)	(((x) >> 1) & 0x3f)
> +#define CALIB_BUF0_O_SLOPE_V1(x)	(((x) >> 26) & 0x3f)
> +#define CALIB_BUF0_O_SLOPE_SIGN_V1(x)	(((x) >> 7) & 0x1)
> +#define CALIB_BUF1_ID_V1(x)		(((x) >> 9) & 0x1)
>  
>  enum {
>  	VTS1,
> @@ -143,6 +143,11 @@ enum {
>  	MAX_NUM_VTS,
>  };
>  
> +enum mtk_thermal_version {
> +	MTK_THERMAL_V1 = 1,
> +	MTK_THERMAL_V2,
> +};
> +
>  /* MT2701 thermal sensors */
>  #define MT2701_TS1	0
>  #define MT2701_TS2	1
> @@ -245,6 +250,9 @@ struct mtk_thermal_data {
>  	const int *controller_offset;
>  	bool need_switch_bank;
>  	struct thermal_bank_cfg bank_data[MAX_NUM_ZONES];
> +	enum mtk_thermal_version version;
> +	int (*extract)(struct mtk_thermal *mt, u32 *buf);
> +	int (*convert)(struct mtk_thermal *mt, int sensno, s32 raw);

I wonder if we really

>  };
>  
>  struct mtk_thermal {
> @@ -358,6 +366,9 @@ static const int mt7622_mux_values[MT7622_NUM_SENSORS] = { 0, };
>  static const int mt7622_vts_index[MT7622_NUM_SENSORS] = { VTS1 };
>  static const int mt7622_tc_offset[MT7622_NUM_CONTROLLER] = { 0x0, };
>  
> +static int mtk_thermal_extract_efuse_v1(struct mtk_thermal *mt, u32 *buf);
> +static int raw_to_mcelsius_v1(struct mtk_thermal *mt, int sensno, s32 raw);
> +
>  /*
>   * The MT8173 thermal controller has four banks. Each bank can read up to
>   * four temperature sensors simultaneously. The MT8173 has a total of 5
> @@ -398,6 +409,9 @@ static const struct mtk_thermal_data mt8173_thermal_data = {
>  	.msr = mt8173_msr,
>  	.adcpnp = mt8173_adcpnp,
>  	.sensor_mux_values = mt8173_mux_values,
> +	.version = MTK_THERMAL_V1,
> +	.extract = mtk_thermal_extract_efuse_v1,
> +	.convert = raw_to_mcelsius_v1,
>  };
>  
>  /*
> @@ -428,6 +442,9 @@ static const struct mtk_thermal_data mt2701_thermal_data = {
>  	.msr = mt2701_msr,
>  	.adcpnp = mt2701_adcpnp,
>  	.sensor_mux_values = mt2701_mux_values,
> +	.version = MTK_THERMAL_V1,
> +	.extract = mtk_thermal_extract_efuse_v1,
> +	.convert = raw_to_mcelsius_v1,
>  };
>  
>  /*
> @@ -458,6 +475,9 @@ static const struct mtk_thermal_data mt2712_thermal_data = {
>  	.msr = mt2712_msr,
>  	.adcpnp = mt2712_adcpnp,
>  	.sensor_mux_values = mt2712_mux_values,
> +	.version = MTK_THERMAL_V1,
> +	.extract = mtk_thermal_extract_efuse_v1,
> +	.convert = raw_to_mcelsius_v1,
>  };
>  
>  /*
> @@ -482,6 +502,9 @@ static const struct mtk_thermal_data mt7622_thermal_data = {
>  	.msr = mt7622_msr,
>  	.adcpnp = mt7622_adcpnp,
>  	.sensor_mux_values = mt7622_mux_values,
> +	.version = MTK_THERMAL_V2,
> +	.extract = mtk_thermal_extract_efuse_v1,
> +	.convert = raw_to_mcelsius_v1,

You are just fixing half of mt7622 here.

From my understanding MTK_THERMAL_V2 driver allwasy use extract and convert in
version _v2. So we won't need to add the callbacks but could check in the code
depending on .version which funtion to call.

You patch set has some ordering issues. I think you should in a first patch
rename function to _v1. Then in a second patch add actually add .version and _v2
and fix mt7622. The latter should also have a Fixes tag. Not sure if both
patches as they both together actually fix mt7622 driver.

Regards,
Matthias

>  };
>  
>  /*
> @@ -514,6 +537,9 @@ static const struct mtk_thermal_data mt8183_thermal_data = {
>  	.msr = mt8183_msr,
>  	.adcpnp = mt8183_adcpnp,
>  	.sensor_mux_values = mt8183_mux_values,
> +	.version = MTK_THERMAL_V1,
> +	.extract = mtk_thermal_extract_efuse_v1,
> +	.convert = raw_to_mcelsius_v1,
>  };
>  
>  /**
> @@ -525,7 +551,7 @@ static const struct mtk_thermal_data mt8183_thermal_data = {
>   * This converts the raw ADC value to mcelsius using the SoC specific
>   * calibration constants
>   */
> -static int raw_to_mcelsius(struct mtk_thermal *mt, int sensno, s32 raw)
> +static int raw_to_mcelsius_v1(struct mtk_thermal *mt, int sensno, s32 raw)
>  {
>  	s32 tmp;
>  
> @@ -594,9 +620,9 @@ static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank)
>  		raw = readl(mt->thermal_base +
>  			    conf->msr[conf->bank_data[bank->id].sensors[i]]);
>  
> -		temp = raw_to_mcelsius(mt,
> -				       conf->bank_data[bank->id].sensors[i],
> -				       raw);
> +		temp = conf->convert(mt,
> +				     conf->bank_data[bank->id].sensors[i],
> +				     raw);
>  
>  		/*
>  		 * The first read of a sensor often contains very high bogus
> @@ -698,9 +724,11 @@ static void mtk_thermal_init_bank(struct mtk_thermal *mt, int num,
>  	writel(auxadc_phys_base + AUXADC_CON1_CLR_V,
>  	       controller_base + TEMP_ADCMUXADDR);
>  
> -	/* AHB address for pnp sensor mux selection */
> -	writel(apmixed_phys_base + APMIXED_SYS_TS_CON1,
> -	       controller_base + TEMP_PNPMUXADDR);
> +	if (mt->conf->version == MTK_THERMAL_V1) {
> +		/* AHB address for pnp sensor mux selection */
> +		writel(apmixed_phys_base + APMIXED_SYS_TS_CON1,
> +		       controller_base + TEMP_PNPMUXADDR);
> +	}
>  
>  	/* AHB value for auxadc enable */
>  	writel(BIT(conf->auxadc_channel), controller_base + TEMP_ADCEN);
> @@ -758,6 +786,51 @@ static u64 of_get_phys_base(struct device_node *np)
>  	return of_translate_address(np, regaddr_p);
>  }
>  
> +static int mtk_thermal_extract_efuse_v1(struct mtk_thermal *mt, u32 *buf)
> +{
> +	int i;
> +
> +	if (!(buf[0] & CALIB_BUF0_VALID_V1))
> +		return -EINVAL;
> +
> +	mt->adc_ge = CALIB_BUF1_ADC_GE_V1(buf[1]);
> +
> +	for (i = 0; i < mt->conf->num_sensors; i++) {
> +		switch (mt->conf->vts_index[i]) {
> +		case VTS1:
> +			mt->vts[VTS1] = CALIB_BUF0_VTS_TS1_V1(buf[0]);
> +			break;
> +		case VTS2:
> +			mt->vts[VTS2] = CALIB_BUF0_VTS_TS2_V1(buf[0]);
> +			break;
> +		case VTS3:
> +			mt->vts[VTS3] = CALIB_BUF1_VTS_TS3_V1(buf[1]);
> +			break;
> +		case VTS4:
> +			mt->vts[VTS4] = CALIB_BUF2_VTS_TS4_V1(buf[2]);
> +			break;
> +		case VTS5:
> +			mt->vts[VTS5] = CALIB_BUF2_VTS_TS5_V1(buf[2]);
> +			break;
> +		case VTSABB:
> +			mt->vts[VTSABB] =
> +				CALIB_BUF2_VTS_TSABB_V1(buf[2]);
> +			break;
> +		default:
> +			break;
> +		}
> +	}
> +
> +	mt->degc_cali = CALIB_BUF0_DEGC_CALI_V1(buf[0]);
> +	if (CALIB_BUF1_ID_V1(buf[1]) &
> +	    CALIB_BUF0_O_SLOPE_SIGN_V1(buf[0]))
> +		mt->o_slope = -CALIB_BUF0_O_SLOPE_V1(buf[0]);
> +	else
> +		mt->o_slope = CALIB_BUF0_O_SLOPE_V1(buf[0]);
> +
> +	return 0;
> +}
> +
>  static int mtk_thermal_get_calibration_data(struct device *dev,
>  					    struct mtk_thermal *mt)
>  {
> @@ -793,43 +866,8 @@ static int mtk_thermal_get_calibration_data(struct device *dev,
>  		goto out;
>  	}
>  
> -	if (buf[0] & CALIB_BUF0_VALID) {
> -		mt->adc_ge = CALIB_BUF1_ADC_GE(buf[1]);
> -
> -		for (i = 0; i < mt->conf->num_sensors; i++) {
> -			switch (mt->conf->vts_index[i]) {
> -			case VTS1:
> -				mt->vts[VTS1] = CALIB_BUF0_VTS_TS1(buf[0]);
> -				break;
> -			case VTS2:
> -				mt->vts[VTS2] = CALIB_BUF0_VTS_TS2(buf[0]);
> -				break;
> -			case VTS3:
> -				mt->vts[VTS3] = CALIB_BUF1_VTS_TS3(buf[1]);
> -				break;
> -			case VTS4:
> -				mt->vts[VTS4] = CALIB_BUF2_VTS_TS4(buf[2]);
> -				break;
> -			case VTS5:
> -				mt->vts[VTS5] = CALIB_BUF2_VTS_TS5(buf[2]);
> -				break;
> -			case VTSABB:
> -				mt->vts[VTSABB] = CALIB_BUF2_VTS_TSABB(buf[2]);
> -				break;
> -			default:
> -				break;
> -			}
> -		}
> -
> -		mt->degc_cali = CALIB_BUF0_DEGC_CALI(buf[0]);
> -		if (CALIB_BUF1_ID(buf[1]) &
> -		    CALIB_BUF0_O_SLOPE_SIGN(buf[0]))
> -			mt->o_slope = -CALIB_BUF0_O_SLOPE(buf[0]);
> -		else
> -			mt->o_slope = CALIB_BUF0_O_SLOPE(buf[0]);
> -	} else {
> +	if (mt->conf->extract(mt, buf))
>  		dev_info(dev, "Device not calibrated, using default calibration values\n");
> -	}
>  
>  out:
>  	kfree(buf);
> 

[PATCH 2/2] thermal: mediatek: add tsensor support for MT7622 SoC

[Henry Yen]

This patch adds the support for version 2 thermal system(e.g., MT7622 SoC).
The changes include the way of reading calibration data, the way of
converting temperature and hardware initialization specific for version 2
thermal system.

Signed-off-by: Henry Yen <henry.yen@mediatek.com>
---
 drivers/thermal/mtk_thermal.c | 100 +++++++++++++++++++++++++++++++++-
 1 file changed, 98 insertions(+), 2 deletions(-)

diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
index 13e17c31ba3b..9e6807f6abd4 100644
--- a/drivers/thermal/mtk_thermal.c
+++ b/drivers/thermal/mtk_thermal.c
@@ -38,6 +38,7 @@
 #define TEMP_MONIDET0		0x014
 #define TEMP_MONIDET1		0x018
 #define TEMP_MSRCTL0		0x038
+#define TEMP_MSRCTL1		0x03c
 #define TEMP_AHBPOLL		0x040
 #define TEMP_AHBTO		0x044
 #define TEMP_ADCPNP0		0x048
@@ -133,6 +134,20 @@
 #define CALIB_BUF0_O_SLOPE_SIGN_V1(x)	(((x) >> 7) & 0x1)
 #define CALIB_BUF1_ID_V1(x)		(((x) >> 9) & 0x1)
 
+/*
+ * Layout of the fuses providing the calibration data
+ * These macros could be used for MT7622.
+ */
+#define CALIB_BUF0_ADC_OE_V2(x)		(((x) >> 22) & 0x3ff)
+#define CALIB_BUF0_ADC_GE_V2(x)		(((x) >> 12) & 0x3ff)
+#define CALIB_BUF0_DEGC_CALI_V2(x)	(((x) >> 6) & 0x3f)
+#define CALIB_BUF0_O_SLOPE_V2(x)	(((x) >> 0) & 0x3f)
+#define CALIB_BUF1_VTS_TS1_V2(x)	(((x) >> 23) & 0x1ff)
+#define CALIB_BUF1_VTS_TS2_V2(x)	(((x) >> 14) & 0x1ff)
+#define CALIB_BUF1_VTS_TSABB_V2(x)	(((x) >> 5) & 0x1ff)
+#define CALIB_BUF1_VALID_V2(x)		(((x) >> 4) & 0x1)
+#define CALIB_BUF1_O_SLOPE_SIGN_V2(x)	(((x) >> 3) & 0x1)
+
 enum {
 	VTS1,
 	VTS2,
@@ -266,8 +281,10 @@ struct mtk_thermal {
 
 	/* Calibration values */
 	s32 adc_ge;
+	s32 adc_oe;
 	s32 degc_cali;
 	s32 o_slope;
+	s32 o_slope_sign;
 	s32 vts[MAX_NUM_VTS];
 
 	const struct mtk_thermal_data *conf;
@@ -367,7 +384,9 @@ static const int mt7622_vts_index[MT7622_NUM_SENSORS] = { VTS1 };
 static const int mt7622_tc_offset[MT7622_NUM_CONTROLLER] = { 0x0, };
 
 static int mtk_thermal_extract_efuse_v1(struct mtk_thermal *mt, u32 *buf);
+static int mtk_thermal_extract_efuse_v2(struct mtk_thermal *mt, u32 *buf);
 static int raw_to_mcelsius_v1(struct mtk_thermal *mt, int sensno, s32 raw);
+static int raw_to_mcelsius_v2(struct mtk_thermal *mt, int sensno, s32 raw);
 
 /*
  * The MT8173 thermal controller has four banks. Each bank can read up to
@@ -503,8 +522,8 @@ static const struct mtk_thermal_data mt7622_thermal_data = {
 	.adcpnp = mt7622_adcpnp,
 	.sensor_mux_values = mt7622_mux_values,
 	.version = MTK_THERMAL_V2,
-	.extract = mtk_thermal_extract_efuse_v1,
-	.convert = raw_to_mcelsius_v1,
+	.extract = mtk_thermal_extract_efuse_v2,
+	.convert = raw_to_mcelsius_v2,
 };
 
 /*
@@ -566,6 +585,36 @@ static int raw_to_mcelsius_v1(struct mtk_thermal *mt, int sensno, s32 raw)
 	return mt->degc_cali * 500 - tmp;
 }
 
+static int raw_to_mcelsius_v2(struct mtk_thermal *mt, int sensno, s32 raw)
+{
+	s32 format_1 = 0;
+	s32 format_2 = 0;
+	s32 g_oe = 1;
+	s32 g_gain = 1;
+	s32 g_x_roomt = 0;
+	s32 tmp = 0;
+
+	if (raw == 0)
+		return 0;
+
+	raw &= 0xfff;
+	g_gain = 10000 + (((mt->adc_ge - 512) * 10000) >> 12);
+	g_oe = mt->adc_oe - 512;
+	format_1 = mt->vts[VTS2] + 3105 - g_oe;
+	format_2 = (mt->degc_cali * 10) >> 1;
+	g_x_roomt = (((format_1 * 10000) >> 12) * 10000) / g_gain;
+
+	tmp = (((((raw - g_oe) * 10000) >> 12) * 10000) / g_gain) - g_x_roomt;
+	tmp = tmp * 10 * 100 / 11;
+
+	if (mt->o_slope_sign == 0)
+		tmp = tmp / (165 - mt->o_slope);
+	else
+		tmp = tmp / (165 + mt->o_slope);
+
+	return (format_2 - tmp) * 100;
+}
+
 /**
  * mtk_thermal_get_bank - get bank
  * @bank:	The bank
@@ -831,6 +880,23 @@ static int mtk_thermal_extract_efuse_v1(struct mtk_thermal *mt, u32 *buf)
 	return 0;
 }
 
+static int mtk_thermal_extract_efuse_v2(struct mtk_thermal *mt, u32 *buf)
+{
+	if (!CALIB_BUF1_VALID_V2(buf[1]))
+		return -EINVAL;
+
+	mt->adc_oe = CALIB_BUF0_ADC_OE_V2(buf[0]);
+	mt->adc_ge = CALIB_BUF0_ADC_GE_V2(buf[0]);
+	mt->degc_cali = CALIB_BUF0_DEGC_CALI_V2(buf[0]);
+	mt->o_slope = CALIB_BUF0_O_SLOPE_V2(buf[0]);
+	mt->vts[VTS1] = CALIB_BUF1_VTS_TS1_V2(buf[1]);
+	mt->vts[VTS2] = CALIB_BUF1_VTS_TS2_V2(buf[1]);
+	mt->vts[VTSABB] = CALIB_BUF1_VTS_TSABB_V2(buf[1]);
+	mt->o_slope_sign = CALIB_BUF1_O_SLOPE_SIGN_V2(buf[1]);
+
+	return 0;
+}
+
 static int mtk_thermal_get_calibration_data(struct device *dev,
 					    struct mtk_thermal *mt)
 {
@@ -900,6 +966,28 @@ static const struct of_device_id mtk_thermal_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, mtk_thermal_of_match);
 
+static void mtk_thermal_turn_on_buffer(void __iomem *apmixed_base)
+{
+	int tmp;
+
+	tmp = readl(apmixed_base + APMIXED_SYS_TS_CON1);
+	tmp &= ~(0x37);
+	tmp |= 0x1;
+	writel(tmp, apmixed_base + APMIXED_SYS_TS_CON1);
+	udelay(200);
+}
+
+static void mtk_thermal_release_periodic_ts(struct mtk_thermal *mt,
+					    void __iomem *auxadc_base)
+{
+	int tmp;
+
+	writel(0x800, auxadc_base + AUXADC_CON1_SET_V);
+	writel(0x1, mt->thermal_base + TEMP_MONCTL0);
+	tmp = readl(mt->thermal_base + TEMP_MSRCTL1);
+	writel((tmp & (~0x10e)), mt->thermal_base + TEMP_MSRCTL1);
+}
+
 static int mtk_thermal_probe(struct platform_device *pdev)
 {
 	int ret, i, ctrl_id;
@@ -908,6 +996,7 @@ static int mtk_thermal_probe(struct platform_device *pdev)
 	struct resource *res;
 	u64 auxadc_phys_base, apmixed_phys_base;
 	struct thermal_zone_device *tzdev;
+	void __iomem *apmixed_base, *auxadc_base;
 
 	mt = devm_kzalloc(&pdev->dev, sizeof(*mt), GFP_KERNEL);
 	if (!mt)
@@ -942,6 +1031,7 @@ static int mtk_thermal_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
+	auxadc_base = of_iomap(auxadc, 0);
 	auxadc_phys_base = of_get_phys_base(auxadc);
 
 	of_node_put(auxadc);
@@ -957,6 +1047,7 @@ static int mtk_thermal_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
+	apmixed_base = of_iomap(apmixedsys, 0);
 	apmixed_phys_base = of_get_phys_base(apmixedsys);
 
 	of_node_put(apmixedsys);
@@ -982,6 +1073,11 @@ static int mtk_thermal_probe(struct platform_device *pdev)
 		goto err_disable_clk_auxadc;
 	}
 
+	if (mt->conf->version == MTK_THERMAL_V2) {
+		mtk_thermal_turn_on_buffer(apmixed_base);
+		mtk_thermal_release_periodic_ts(mt, auxadc_base);
+	}
+
 	for (ctrl_id = 0; ctrl_id < mt->conf->num_controller ; ctrl_id++)
 		for (i = 0; i < mt->conf->num_banks; i++)
 			mtk_thermal_init_bank(mt, i, apmixed_phys_base,
-- 
2.17.1

Re: [PATCH 2/2] thermal: mediatek: add tsensor support for MT7622 SoC

[Matthias Brugger]

On 19/03/2020 10:54, Henry Yen wrote:
> This patch adds the support for version 2 thermal system(e.g., MT7622 SoC).
> The changes include the way of reading calibration data, the way of
> converting temperature and hardware initialization specific for version 2
> thermal system.
> 
> Signed-off-by: Henry Yen <henry.yen@mediatek.com>
> ---
>  drivers/thermal/mtk_thermal.c | 100 +++++++++++++++++++++++++++++++++-
>  1 file changed, 98 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
> index 13e17c31ba3b..9e6807f6abd4 100644
> --- a/drivers/thermal/mtk_thermal.c
> +++ b/drivers/thermal/mtk_thermal.c
> @@ -38,6 +38,7 @@
>  #define TEMP_MONIDET0		0x014
>  #define TEMP_MONIDET1		0x018
>  #define TEMP_MSRCTL0		0x038
> +#define TEMP_MSRCTL1		0x03c
>  #define TEMP_AHBPOLL		0x040
>  #define TEMP_AHBTO		0x044
>  #define TEMP_ADCPNP0		0x048
> @@ -133,6 +134,20 @@
>  #define CALIB_BUF0_O_SLOPE_SIGN_V1(x)	(((x) >> 7) & 0x1)
>  #define CALIB_BUF1_ID_V1(x)		(((x) >> 9) & 0x1)
>  
> +/*
> + * Layout of the fuses providing the calibration data
> + * These macros could be used for MT7622.
> + */
> +#define CALIB_BUF0_ADC_OE_V2(x)		(((x) >> 22) & 0x3ff)
> +#define CALIB_BUF0_ADC_GE_V2(x)		(((x) >> 12) & 0x3ff)
> +#define CALIB_BUF0_DEGC_CALI_V2(x)	(((x) >> 6) & 0x3f)
> +#define CALIB_BUF0_O_SLOPE_V2(x)	(((x) >> 0) & 0x3f)
> +#define CALIB_BUF1_VTS_TS1_V2(x)	(((x) >> 23) & 0x1ff)
> +#define CALIB_BUF1_VTS_TS2_V2(x)	(((x) >> 14) & 0x1ff)
> +#define CALIB_BUF1_VTS_TSABB_V2(x)	(((x) >> 5) & 0x1ff)
> +#define CALIB_BUF1_VALID_V2(x)		(((x) >> 4) & 0x1)
> +#define CALIB_BUF1_O_SLOPE_SIGN_V2(x)	(((x) >> 3) & 0x1)
> +
>  enum {
>  	VTS1,
>  	VTS2,
> @@ -266,8 +281,10 @@ struct mtk_thermal {
>  
>  	/* Calibration values */
>  	s32 adc_ge;
> +	s32 adc_oe;
>  	s32 degc_cali;
>  	s32 o_slope;
> +	s32 o_slope_sign;
>  	s32 vts[MAX_NUM_VTS];
>  
>  	const struct mtk_thermal_data *conf;
> @@ -367,7 +384,9 @@ static const int mt7622_vts_index[MT7622_NUM_SENSORS] = { VTS1 };
>  static const int mt7622_tc_offset[MT7622_NUM_CONTROLLER] = { 0x0, };
>  
>  static int mtk_thermal_extract_efuse_v1(struct mtk_thermal *mt, u32 *buf);
> +static int mtk_thermal_extract_efuse_v2(struct mtk_thermal *mt, u32 *buf);
>  static int raw_to_mcelsius_v1(struct mtk_thermal *mt, int sensno, s32 raw);
> +static int raw_to_mcelsius_v2(struct mtk_thermal *mt, int sensno, s32 raw);
>  
>  /*
>   * The MT8173 thermal controller has four banks. Each bank can read up to
> @@ -503,8 +522,8 @@ static const struct mtk_thermal_data mt7622_thermal_data = {
>  	.adcpnp = mt7622_adcpnp,
>  	.sensor_mux_values = mt7622_mux_values,
>  	.version = MTK_THERMAL_V2,
> -	.extract = mtk_thermal_extract_efuse_v1,
> -	.convert = raw_to_mcelsius_v1,
> +	.extract = mtk_thermal_extract_efuse_v2,
> +	.convert = raw_to_mcelsius_v2,

Hm, does this mean that patch 1/2 get's fixed here? Please reorganize your
patches so that they are correct in the first place and do not needed to be
fixed in the same series.

Regards,
Matthias

>  };
>  
>  /*
> @@ -566,6 +585,36 @@ static int raw_to_mcelsius_v1(struct mtk_thermal *mt, int sensno, s32 raw)
>  	return mt->degc_cali * 500 - tmp;
>  }
>  
> +static int raw_to_mcelsius_v2(struct mtk_thermal *mt, int sensno, s32 raw)
> +{
> +	s32 format_1 = 0;
> +	s32 format_2 = 0;
> +	s32 g_oe = 1;
> +	s32 g_gain = 1;
> +	s32 g_x_roomt = 0;
> +	s32 tmp = 0;
> +
> +	if (raw == 0)
> +		return 0;
> +
> +	raw &= 0xfff;
> +	g_gain = 10000 + (((mt->adc_ge - 512) * 10000) >> 12);
> +	g_oe = mt->adc_oe - 512;
> +	format_1 = mt->vts[VTS2] + 3105 - g_oe;
> +	format_2 = (mt->degc_cali * 10) >> 1;
> +	g_x_roomt = (((format_1 * 10000) >> 12) * 10000) / g_gain;
> +
> +	tmp = (((((raw - g_oe) * 10000) >> 12) * 10000) / g_gain) - g_x_roomt;
> +	tmp = tmp * 10 * 100 / 11;
> +
> +	if (mt->o_slope_sign == 0)
> +		tmp = tmp / (165 - mt->o_slope);
> +	else
> +		tmp = tmp / (165 + mt->o_slope);
> +
> +	return (format_2 - tmp) * 100;
> +}
> +
>  /**
>   * mtk_thermal_get_bank - get bank
>   * @bank:	The bank
> @@ -831,6 +880,23 @@ static int mtk_thermal_extract_efuse_v1(struct mtk_thermal *mt, u32 *buf)
>  	return 0;
>  }
>  
> +static int mtk_thermal_extract_efuse_v2(struct mtk_thermal *mt, u32 *buf)
> +{
> +	if (!CALIB_BUF1_VALID_V2(buf[1]))
> +		return -EINVAL;
> +
> +	mt->adc_oe = CALIB_BUF0_ADC_OE_V2(buf[0]);
> +	mt->adc_ge = CALIB_BUF0_ADC_GE_V2(buf[0]);
> +	mt->degc_cali = CALIB_BUF0_DEGC_CALI_V2(buf[0]);
> +	mt->o_slope = CALIB_BUF0_O_SLOPE_V2(buf[0]);
> +	mt->vts[VTS1] = CALIB_BUF1_VTS_TS1_V2(buf[1]);
> +	mt->vts[VTS2] = CALIB_BUF1_VTS_TS2_V2(buf[1]);
> +	mt->vts[VTSABB] = CALIB_BUF1_VTS_TSABB_V2(buf[1]);
> +	mt->o_slope_sign = CALIB_BUF1_O_SLOPE_SIGN_V2(buf[1]);
> +
> +	return 0;
> +}
> +
>  static int mtk_thermal_get_calibration_data(struct device *dev,
>  					    struct mtk_thermal *mt)
>  {
> @@ -900,6 +966,28 @@ static const struct of_device_id mtk_thermal_of_match[] = {
>  };
>  MODULE_DEVICE_TABLE(of, mtk_thermal_of_match);
>  
> +static void mtk_thermal_turn_on_buffer(void __iomem *apmixed_base)
> +{
> +	int tmp;
> +
> +	tmp = readl(apmixed_base + APMIXED_SYS_TS_CON1);
> +	tmp &= ~(0x37);
> +	tmp |= 0x1;
> +	writel(tmp, apmixed_base + APMIXED_SYS_TS_CON1);
> +	udelay(200);
> +}
> +
> +static void mtk_thermal_release_periodic_ts(struct mtk_thermal *mt,
> +					    void __iomem *auxadc_base)
> +{
> +	int tmp;
> +
> +	writel(0x800, auxadc_base + AUXADC_CON1_SET_V);
> +	writel(0x1, mt->thermal_base + TEMP_MONCTL0);
> +	tmp = readl(mt->thermal_base + TEMP_MSRCTL1);
> +	writel((tmp & (~0x10e)), mt->thermal_base + TEMP_MSRCTL1);
> +}
> +
>  static int mtk_thermal_probe(struct platform_device *pdev)
>  {
>  	int ret, i, ctrl_id;
> @@ -908,6 +996,7 @@ static int mtk_thermal_probe(struct platform_device *pdev)
>  	struct resource *res;
>  	u64 auxadc_phys_base, apmixed_phys_base;
>  	struct thermal_zone_device *tzdev;
> +	void __iomem *apmixed_base, *auxadc_base;
>  
>  	mt = devm_kzalloc(&pdev->dev, sizeof(*mt), GFP_KERNEL);
>  	if (!mt)
> @@ -942,6 +1031,7 @@ static int mtk_thermal_probe(struct platform_device *pdev)
>  		return -ENODEV;
>  	}
>  
> +	auxadc_base = of_iomap(auxadc, 0);
>  	auxadc_phys_base = of_get_phys_base(auxadc);
>  
>  	of_node_put(auxadc);
> @@ -957,6 +1047,7 @@ static int mtk_thermal_probe(struct platform_device *pdev)
>  		return -ENODEV;
>  	}
>  
> +	apmixed_base = of_iomap(apmixedsys, 0);
>  	apmixed_phys_base = of_get_phys_base(apmixedsys);
>  
>  	of_node_put(apmixedsys);
> @@ -982,6 +1073,11 @@ static int mtk_thermal_probe(struct platform_device *pdev)
>  		goto err_disable_clk_auxadc;
>  	}
>  
> +	if (mt->conf->version == MTK_THERMAL_V2) {
> +		mtk_thermal_turn_on_buffer(apmixed_base);
> +		mtk_thermal_release_periodic_ts(mt, auxadc_base);
> +	}
> +
>  	for (ctrl_id = 0; ctrl_id < mt->conf->num_controller ; ctrl_id++)
>  		for (i = 0; i < mt->conf->num_banks; i++)
>  			mtk_thermal_init_bank(mt, i, apmixed_phys_base,
>