[PATCH v2 0/4] thermal: mediatek: Add mt8365 support

[PATCH v2 0/4] thermal: mediatek: Add mt8365 support

[Markus Schneider-Pargmann]

Hi,

this series adds a compatible to the bindings and a specific part for
the thermal driver.

In v2 I added a patch to remove unnecessary (void*) casts and fixed the
comments I received.

Thanks for any feedback or comments.

Best,
Markus


Fabien Parent (1):
  thermal: mediatek: add MT8365 thermal driver support

Markus Schneider-Pargmann (3):
  dt-bindings: thermal: mediatek: Add mt8365
  thermal: mediatek: Fix apmixed error message
  thermal: mediatek: Remove data void casts

 .../bindings/thermal/mediatek-thermal.txt     |   1 +
 drivers/thermal/mtk_thermal.c                 | 102 +++++++++++++++---
 2 files changed, 91 insertions(+), 12 deletions(-)

-- 
2.33.0

[PATCH v2 1/4] dt-bindings: thermal: mediatek: Add mt8365

[Markus Schneider-Pargmann]

This unit is present on the mt8365 SoC as well. But there is a
difference in the usage of an apmixed register.

This patch adds a distinct mt8365 to the list of compatibles.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
---
 Documentation/devicetree/bindings/thermal/mediatek-thermal.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt b/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt
index 5c7e7bdd029a..ba4ebffeade4 100644
--- a/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt
+++ b/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt
@@ -14,6 +14,7 @@ Required properties:
   - "mediatek,mt2712-thermal" : For MT2712 family of SoCs
   - "mediatek,mt7622-thermal" : For MT7622 SoC
   - "mediatek,mt8183-thermal" : For MT8183 family of SoCs
+  - "mediatek,mt8365-thermal" : For MT8365 family of SoCs
   - "mediatek,mt8516-thermal", "mediatek,mt2701-thermal : For MT8516 family of SoCs
 - reg: Address range of the thermal controller
 - interrupts: IRQ for the thermal controller
-- 
2.33.0

Re: [PATCH v2 1/4] dt-bindings: thermal: mediatek: Add mt8365

[Rob Herring]

On Tue, 19 Oct 2021 11:34:01 +0200, Markus Schneider-Pargmann wrote:
> This unit is present on the mt8365 SoC as well. But there is a
> difference in the usage of an apmixed register.
> 
> This patch adds a distinct mt8365 to the list of compatibles.
> 
> Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
> ---
>  Documentation/devicetree/bindings/thermal/mediatek-thermal.txt | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring <robh@kernel.org>

[PATCH v2 2/4] thermal: mediatek: Fix apmixed error message

[Markus Schneider-Pargmann]

Seems to be a copy and paste mistake, this is the apmixed address, not
auxadc.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Fixes: a92db1c8089e (thermal: Add Mediatek thermal controller support)
---
 drivers/thermal/mtk_thermal.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
index ede94eadddda..93ee043d70da 100644
--- a/drivers/thermal/mtk_thermal.c
+++ b/drivers/thermal/mtk_thermal.c
@@ -1050,7 +1050,7 @@ static int mtk_thermal_probe(struct platform_device *pdev)
 	of_node_put(apmixedsys);
 
 	if (apmixed_phys_base == OF_BAD_ADDR) {
-		dev_err(&pdev->dev, "Can't get auxadc phys address\n");
+		dev_err(&pdev->dev, "Can't get apmixed phys address\n");
 		return -EINVAL;
 	}
 
-- 
2.33.0

[PATCH v2 3/4] thermal: mediatek: Remove data void casts

[Markus Schneider-Pargmann]

It is not necessary to cast struct mtk_thermal_data to (void*).

This patch removes these casts.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
---
 drivers/thermal/mtk_thermal.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
index 93ee043d70da..af6cd11eb221 100644
--- a/drivers/thermal/mtk_thermal.c
+++ b/drivers/thermal/mtk_thermal.c
@@ -941,23 +941,23 @@ static int mtk_thermal_get_calibration_data(struct device *dev,
 static const struct of_device_id mtk_thermal_of_match[] = {
 	{
 		.compatible = "mediatek,mt8173-thermal",
-		.data = (void *)&mt8173_thermal_data,
+		.data = &mt8173_thermal_data,
 	},
 	{
 		.compatible = "mediatek,mt2701-thermal",
-		.data = (void *)&mt2701_thermal_data,
+		.data = &mt2701_thermal_data,
 	},
 	{
 		.compatible = "mediatek,mt2712-thermal",
-		.data = (void *)&mt2712_thermal_data,
+		.data = &mt2712_thermal_data,
 	},
 	{
 		.compatible = "mediatek,mt7622-thermal",
-		.data = (void *)&mt7622_thermal_data,
+		.data = &mt7622_thermal_data,
 	},
 	{
 		.compatible = "mediatek,mt8183-thermal",
-		.data = (void *)&mt8183_thermal_data,
+		.data = &mt8183_thermal_data,
 	}, {
 	},
 };
-- 
2.33.0

[PATCH v2 4/4] thermal: mediatek: add MT8365 thermal driver support

[Markus Schneider-Pargmann]

From: Fabien Parent <fparent@baylibre.com>

mt8365 is similar to the other SoCs supported by the driver. It has only
one bank and 3 sensors that can be multiplexed.

Additionally the buffer has to be enabled and connected to AUXADC
similar to the V2 version but at a different register offset. That's why
I added three new configuration values to define the register, mask and
bits to be set to be able to use it for both V2 and mt8365.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
[Added apmixed control register logic]
Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
---

Notes:
    Changes v1 -> v2:
    - Use of ARRAY_SIZE to avoid NUM macros.
    - Remove (void*) cast.
    - Use macros for mt7622 buffer_ctl operations.

 drivers/thermal/mtk_thermal.c | 90 ++++++++++++++++++++++++++++++++---
 1 file changed, 84 insertions(+), 6 deletions(-)

diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
index af6cd11eb221..fc4ea58d00ec 100644
--- a/drivers/thermal/mtk_thermal.c
+++ b/drivers/thermal/mtk_thermal.c
@@ -31,6 +31,7 @@
 #define AUXADC_CON2_V		0x010
 #define AUXADC_DATA(channel)	(0x14 + (channel) * 4)
 
+#define APMIXED_SYS_TS_CON0	0x600
 #define APMIXED_SYS_TS_CON1	0x604
 
 /* Thermal Controller Registers */
@@ -212,6 +213,8 @@ enum mtk_thermal_version {
 #define MT7622_NUM_SENSORS_PER_ZONE	1
 #define MT7622_TS1	0
 #define MT7622_NUM_CONTROLLER		1
+#define MT7622_BUFFER_CTL_MASK		~0x37
+#define MT7622_BUFFER_CTL_SET		0x1
 
 /* The maximum number of banks */
 #define MAX_NUM_ZONES		8
@@ -245,6 +248,14 @@ enum mtk_thermal_version {
 /* The calibration coefficient of sensor  */
 #define MT8183_CALIBRATION	153
 
+/* MT8365 */
+#define MT8365_TEMP_AUXADC_CHANNEL 11
+#define MT8365_CALIBRATION 164
+#define MT8365_NUM_BANKS 1
+#define MT8365_TS1 0
+#define MT8365_TS2 1
+#define MT8365_TS3 2
+
 struct mtk_thermal;
 
 struct thermal_bank_cfg {
@@ -271,6 +282,9 @@ struct mtk_thermal_data {
 	bool need_switch_bank;
 	struct thermal_bank_cfg bank_data[MAX_NUM_ZONES];
 	enum mtk_thermal_version version;
+	u32 apmixed_buffer_ctl_reg;
+	u32 apmixed_buffer_ctl_mask;
+	u32 apmixed_buffer_ctl_set;
 };
 
 struct mtk_thermal {
@@ -386,6 +400,25 @@ 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, };
 
+/* MT8365 thermal sensor data */
+static const int mt8365_bank_data[] = {
+	MT8365_TS1, MT8365_TS2, MT8365_TS3
+};
+
+static const int mt8365_msr[ARRAY_SIZE(mt8365_bank_data)] = {
+	TEMP_MSR0, TEMP_MSR1, TEMP_MSR2
+};
+
+static const int mt8365_adcpnp[ARRAY_SIZE(mt8365_bank_data)] = {
+	TEMP_ADCPNP0, TEMP_ADCPNP1, TEMP_ADCPNP2
+};
+
+static const int mt8365_mux_values[ARRAY_SIZE(mt8365_bank_data)] = { 0, 1, 2 };
+static const int mt8365_tc_offset[] = { 0 };
+
+static const int mt8365_vts_index[ARRAY_SIZE(mt8365_bank_data)] = { VTS1, VTS2,
+								    VTS3 };
+
 /*
  * The MT8173 thermal controller has four banks. Each bank can read up to
  * four temperature sensors simultaneously. The MT8173 has a total of 5
@@ -460,6 +493,39 @@ static const struct mtk_thermal_data mt2701_thermal_data = {
 	.version = MTK_THERMAL_V1,
 };
 
+/*
+ * The MT8365 thermal controller has one bank, which can read up to
+ * four temperature sensors simultaneously. The MT8365 has a total of 3
+ * temperature sensors.
+ *
+ * The thermal core only gets the maximum temperature of this one bank,
+ * so the bank concept wouldn't be necessary here. However, the SVS (Smart
+ * Voltage Scaling) unit makes its decisions based on the same bank
+ * data.
+ */
+static const struct mtk_thermal_data mt8365_thermal_data = {
+	.auxadc_channel = MT8365_TEMP_AUXADC_CHANNEL,
+	.num_banks = MT8365_NUM_BANKS,
+	.num_sensors = ARRAY_SIZE(mt8365_bank_data),
+	.vts_index = mt8365_vts_index,
+	.cali_val = MT8365_CALIBRATION,
+	.num_controller = ARRAY_SIZE(mt8365_tc_offset),
+	.controller_offset = mt8365_tc_offset,
+	.need_switch_bank = false,
+	.bank_data = {
+		{
+			.num_sensors = ARRAY_SIZE(mt8365_bank_data),
+			.sensors = mt8365_bank_data
+		},
+	},
+	.msr = mt8365_msr,
+	.adcpnp = mt8365_adcpnp,
+	.sensor_mux_values = mt8365_mux_values,
+	.version = MTK_THERMAL_V1,
+	.apmixed_buffer_ctl_reg = APMIXED_SYS_TS_CON0,
+	.apmixed_buffer_ctl_mask = ~(u32)GENMASK(29, 28),
+};
+
 /*
  * The MT2712 thermal controller has one bank, which can read up to
  * four temperature sensors simultaneously. The MT2712 has a total of 4
@@ -514,6 +580,9 @@ static const struct mtk_thermal_data mt7622_thermal_data = {
 	.adcpnp = mt7622_adcpnp,
 	.sensor_mux_values = mt7622_mux_values,
 	.version = MTK_THERMAL_V2,
+	.apmixed_buffer_ctl_reg = APMIXED_SYS_TS_CON1,
+	.apmixed_buffer_ctl_mask = MT7622_BUFFER_CTL_MASK,
+	.apmixed_buffer_ctl_set = MT7622_BUFFER_CTL_SET,
 };
 
 /*
@@ -958,19 +1027,27 @@ static const struct of_device_id mtk_thermal_of_match[] = {
 	{
 		.compatible = "mediatek,mt8183-thermal",
 		.data = &mt8183_thermal_data,
+	},
+	{
+		.compatible = "mediatek,mt8365-thermal",
+		.data = &mt8365_thermal_data,
 	}, {
 	},
 };
 MODULE_DEVICE_TABLE(of, mtk_thermal_of_match);
 
-static void mtk_thermal_turn_on_buffer(void __iomem *apmixed_base)
+static void mtk_thermal_turn_on_buffer(struct mtk_thermal *mt,
+				       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);
+	if (!mt->conf->apmixed_buffer_ctl_reg)
+		return;
+
+	tmp = readl(apmixed_base + mt->conf->apmixed_buffer_ctl_reg);
+	tmp &= mt->conf->apmixed_buffer_ctl_mask;
+	tmp |= mt->conf->apmixed_buffer_ctl_set;
+	writel(tmp, apmixed_base + mt->conf->apmixed_buffer_ctl_reg);
 	udelay(200);
 }
 
@@ -1070,8 +1147,9 @@ static int mtk_thermal_probe(struct platform_device *pdev)
 		goto err_disable_clk_auxadc;
 	}
 
+	mtk_thermal_turn_on_buffer(mt, apmixed_base);
+
 	if (mt->conf->version == MTK_THERMAL_V2) {
-		mtk_thermal_turn_on_buffer(apmixed_base);
 		mtk_thermal_release_periodic_ts(mt, auxadc_base);
 	}
 
-- 
2.33.0

Re: [PATCH v2 4/4] thermal: mediatek: add MT8365 thermal driver support

[Daniel Lezcano]

On 19/10/2021 11:34, Markus Schneider-Pargmann wrote:
> From: Fabien Parent <fparent@baylibre.com>
> 
> mt8365 is similar to the other SoCs supported by the driver. It has only
> one bank and 3 sensors that can be multiplexed.
> 
> Additionally the buffer has to be enabled and connected to AUXADC
> similar to the V2 version but at a different register offset. That's why
> I added three new configuration values to define the register, mask and
> bits to be set to be able to use it for both V2 and mt8365.
> 
> Signed-off-by: Fabien Parent <fparent@baylibre.com>
> [Added apmixed control register logic]
> Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
> ---
> 
> Notes:
>     Changes v1 -> v2:
>     - Use of ARRAY_SIZE to avoid NUM macros.
>     - Remove (void*) cast.
>     - Use macros for mt7622 buffer_ctl operations.
> 
>  drivers/thermal/mtk_thermal.c | 90 ++++++++++++++++++++++++++++++++---
>  1 file changed, 84 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
> index af6cd11eb221..fc4ea58d00ec 100644
> --- a/drivers/thermal/mtk_thermal.c
> +++ b/drivers/thermal/mtk_thermal.c
> @@ -31,6 +31,7 @@
>  #define AUXADC_CON2_V		0x010
>  #define AUXADC_DATA(channel)	(0x14 + (channel) * 4)
>  
> +#define APMIXED_SYS_TS_CON0	0x600
>  #define APMIXED_SYS_TS_CON1	0x604
>  
>  /* Thermal Controller Registers */
> @@ -212,6 +213,8 @@ enum mtk_thermal_version {
>  #define MT7622_NUM_SENSORS_PER_ZONE	1
>  #define MT7622_TS1	0
>  #define MT7622_NUM_CONTROLLER		1
> +#define MT7622_BUFFER_CTL_MASK		~0x37
> +#define MT7622_BUFFER_CTL_SET		0x1
>  
>  /* The maximum number of banks */
>  #define MAX_NUM_ZONES		8
> @@ -245,6 +248,14 @@ enum mtk_thermal_version {
>  /* The calibration coefficient of sensor  */
>  #define MT8183_CALIBRATION	153
>  
> +/* MT8365 */
> +#define MT8365_TEMP_AUXADC_CHANNEL 11
> +#define MT8365_CALIBRATION 164
> +#define MT8365_NUM_BANKS 1
> +#define MT8365_TS1 0
> +#define MT8365_TS2 1
> +#define MT8365_TS3 2
> +
>  struct mtk_thermal;
>  
>  struct thermal_bank_cfg {
> @@ -271,6 +282,9 @@ struct mtk_thermal_data {
>  	bool need_switch_bank;
>  	struct thermal_bank_cfg bank_data[MAX_NUM_ZONES];
>  	enum mtk_thermal_version version;
> +	u32 apmixed_buffer_ctl_reg;
> +	u32 apmixed_buffer_ctl_mask;
> +	u32 apmixed_buffer_ctl_set;
>  };
>  
>  struct mtk_thermal {
> @@ -386,6 +400,25 @@ 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, };
>  
> +/* MT8365 thermal sensor data */
> +static const int mt8365_bank_data[] = {
> +	MT8365_TS1, MT8365_TS2, MT8365_TS3
> +};
> +
> +static const int mt8365_msr[ARRAY_SIZE(mt8365_bank_data)] = {
> +	TEMP_MSR0, TEMP_MSR1, TEMP_MSR2
> +};
> +
> +static const int mt8365_adcpnp[ARRAY_SIZE(mt8365_bank_data)] = {
> +	TEMP_ADCPNP0, TEMP_ADCPNP1, TEMP_ADCPNP2
> +};
> +
> +static const int mt8365_mux_values[ARRAY_SIZE(mt8365_bank_data)] = { 0, 1, 2 };

This portion of declaration shows it should be *one* array of structures :/

This comment applies for all the existing code.

TBH, I think the code could be simplified and consolidated in this
driver. But that would be out of the scope of your changes as I
understand you are sticking to the current implementation.


> +static const int mt8365_tc_offset[] = { 0 };

0x0, to be consistent with the rest of the code.

> +
> +static const int mt8365_vts_index[ARRAY_SIZE(mt8365_bank_data)] = { VTS1, VTS2,
> +								    VTS3 };
> +
>  /*
>   * The MT8173 thermal controller has four banks. Each bank can read up to
>   * four temperature sensors simultaneously. The MT8173 has a total of 5
> @@ -460,6 +493,39 @@ static const struct mtk_thermal_data mt2701_thermal_data = {
>  	.version = MTK_THERMAL_V1,
>  };
>  
> +/*
> + * The MT8365 thermal controller has one bank, which can read up to
> + * four temperature sensors simultaneously. The MT8365 has a total of 3
> + * temperature sensors.
> + *
> + * The thermal core only gets the maximum temperature of this one bank,
> + * so the bank concept wouldn't be necessary here. However, the SVS (Smart
> + * Voltage Scaling) unit makes its decisions based on the same bank
> + * data.
> + */
> +static const struct mtk_thermal_data mt8365_thermal_data = {
> +	.auxadc_channel = MT8365_TEMP_AUXADC_CHANNEL,
> +	.num_banks = MT8365_NUM_BANKS,
> +	.num_sensors = ARRAY_SIZE(mt8365_bank_data),
> +	.vts_index = mt8365_vts_index,
> +	.cali_val = MT8365_CALIBRATION,
> +	.num_controller = ARRAY_SIZE(mt8365_tc_offset),
> +	.controller_offset = mt8365_tc_offset,
> +	.need_switch_bank = false,
> +	.bank_data = {
> +		{
> +			.num_sensors = ARRAY_SIZE(mt8365_bank_data),
> +			.sensors = mt8365_bank_data
> +		},
> +	},
> +	.msr = mt8365_msr,
> +	.adcpnp = mt8365_adcpnp,
> +	.sensor_mux_values = mt8365_mux_values,
> +	.version = MTK_THERMAL_V1,
> +	.apmixed_buffer_ctl_reg = APMIXED_SYS_TS_CON0,
> +	.apmixed_buffer_ctl_mask = ~(u32)GENMASK(29, 28),
> +};
>
>  /*
>   * The MT2712 thermal controller has one bank, which can read up to
>   * four temperature sensors simultaneously. The MT2712 has a total of 4
> @@ -514,6 +580,9 @@ static const struct mtk_thermal_data mt7622_thermal_data = {
>  	.adcpnp = mt7622_adcpnp,
>  	.sensor_mux_values = mt7622_mux_values,
>  	.version = MTK_THERMAL_V2,
> +	.apmixed_buffer_ctl_reg = APMIXED_SYS_TS_CON1,
> +	.apmixed_buffer_ctl_mask = MT7622_BUFFER_CTL_MASK,
> +	.apmixed_buffer_ctl_set = MT7622_BUFFER_CTL_SET,
>  };
>  
>  /*
> @@ -958,19 +1027,27 @@ static const struct of_device_id mtk_thermal_of_match[] = {
>  	{
>  		.compatible = "mediatek,mt8183-thermal",
>  		.data = &mt8183_thermal_data,
> +	},
> +	{
> +		.compatible = "mediatek,mt8365-thermal",
> +		.data = &mt8365_thermal_data,
>  	}, {
>  	},
>  };
>  MODULE_DEVICE_TABLE(of, mtk_thermal_of_match);
>  
> -static void mtk_thermal_turn_on_buffer(void __iomem *apmixed_base)
> +static void mtk_thermal_turn_on_buffer(struct mtk_thermal *mt,
> +				       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);
> +	if (!mt->conf->apmixed_buffer_ctl_reg)
> +		return;
> +
> +	tmp = readl(apmixed_base + mt->conf->apmixed_buffer_ctl_reg);
> +	tmp &= mt->conf->apmixed_buffer_ctl_mask;
> +	tmp |= mt->conf->apmixed_buffer_ctl_set;
> +	writel(tmp, apmixed_base + mt->conf->apmixed_buffer_ctl_reg);
>  	udelay(200);
>  }
>  
> @@ -1070,8 +1147,9 @@ static int mtk_thermal_probe(struct platform_device *pdev)
>  		goto err_disable_clk_auxadc;
>  	}
>  
> +	mtk_thermal_turn_on_buffer(mt, apmixed_base);
> +
>  	if (mt->conf->version == MTK_THERMAL_V2) {
> -		mtk_thermal_turn_on_buffer(apmixed_base);
>  		mtk_thermal_release_periodic_ts(mt, auxadc_base);
>  	}
>  
> 


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