[PATCH V6 1/2] ARM: dts: imx7s: add temperature monitor support

[PATCH V6 1/2] ARM: dts: imx7s: add temperature monitor support

[Anson Huang]

Add i.MX7 temperature monitor support.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Acked-by: Dong Aisheng <aisheng.dong@nxp.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
---
changes since V5:
	no code change, just add Reviewed-by.
 arch/arm/boot/dts/imx7s.dtsi | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
index 9aa2bb9..6a5c1bf 100644
--- a/arch/arm/boot/dts/imx7s.dtsi
+++ b/arch/arm/boot/dts/imx7s.dtsi
@@ -511,9 +511,29 @@
 			};
 
 			ocotp: ocotp-ctrl@30350000 {
+				#address-cells = <1>;
+				#size-cells = <1>;
 				compatible = "fsl,imx7d-ocotp", "syscon";
 				reg = <0x30350000 0x10000>;
 				clocks = <&clks IMX7D_OCOTP_CLK>;
+
+				tempmon_calib: calib@3c {
+					reg = <0x3c 0x4>;
+				};
+
+				tempmon_temp_grade: temp-grade@10 {
+					reg = <0x10 0x4>;
+				};
+			};
+
+			tempmon: tempmon {
+				compatible = "fsl,imx7d-tempmon";
+				interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
+				fsl,tempmon =<&anatop>;
+				nvmem-cells = <&tempmon_calib>,
+					<&tempmon_temp_grade>;
+				nvmem-cell-names = "calib", "temp_grade";
+				clocks = <&clks IMX7D_PLL_SYS_MAIN_CLK>;
 			};
 
 			anatop: anatop@30360000 {
-- 
2.7.4

[PATCH V6 2/2] thermal: imx: add i.MX7 thermal sensor support

[Anson Huang]

This patch adds i.MX7 thermal sensor support, most
of the i.MX7 thermal sensor functions are same with
i.MX6 except the registers offset/layout, so we move
those registers offset/layout definitions to soc data
structure.

i.MX7 uses single calibration data @25C, the calibration
data is located at OCOTP offset 0x4F0, bit[17:9], the
formula is as below:

Tmeas = (Nmeas - n1) + 25; n1 is the fuse value for 25C.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Bai Ping <ping.bai@nxp.com>
Acked-by: Dong Aisheng <aisheng.dong@nxp.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
---
changes since V5:
	no code change, just add Reviewed-by.
 .../devicetree/bindings/thermal/imx-thermal.txt    |   9 +-
 drivers/thermal/imx_thermal.c                      | 295 ++++++++++++++++-----
 2 files changed, 239 insertions(+), 65 deletions(-)

diff --git a/Documentation/devicetree/bindings/thermal/imx-thermal.txt b/Documentation/devicetree/bindings/thermal/imx-thermal.txt
index 28be51a..38bffcc 100644
--- a/Documentation/devicetree/bindings/thermal/imx-thermal.txt
+++ b/Documentation/devicetree/bindings/thermal/imx-thermal.txt
@@ -1,8 +1,13 @@
 * Temperature Monitor (TEMPMON) on Freescale i.MX SoCs
 
 Required properties:
-- compatible : "fsl,imx6q-tempmon" for i.MX6Q, "fsl,imx6sx-tempmon" for i.MX6SX.
-  i.MX6SX has two more IRQs than i.MX6Q, one is IRQ_LOW and the other is IRQ_PANIC,
+- compatible : must be one of following:
+  - "fsl,imx6q-tempmon" for i.MX6Q,
+  - "fsl,imx6sx-tempmon" for i.MX6SX,
+  - "fsl,imx7d-tempmon" for i.MX7S/D.
+- interrupts : the interrupt output of the controller:
+  i.MX6Q has one IRQ which will be triggered when temperature is higher than high threshold,
+  i.MX6SX and i.MX7S/D have two more IRQs than i.MX6Q, one is IRQ_LOW and the other is IRQ_PANIC,
   when temperature is below than low threshold, IRQ_LOW will be triggered, when temperature
   is higher than panic threshold, system will auto reboot by SRC module.
 - fsl,tempmon : phandle pointer to system controller that contains TEMPMON
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
index a67781b..569d41b 100644
--- a/drivers/thermal/imx_thermal.c
+++ b/drivers/thermal/imx_thermal.c
@@ -31,35 +31,57 @@
 #define REG_CLR		0x8
 #define REG_TOG		0xc
 
-#define MISC0				0x0150
-#define MISC0_REFTOP_SELBIASOFF		(1 << 3)
-#define MISC1				0x0160
-#define MISC1_IRQ_TEMPHIGH		(1 << 29)
+/* i.MX6 specific */
+#define IMX6_MISC0				0x0150
+#define IMX6_MISC0_REFTOP_SELBIASOFF		(1 << 3)
+#define IMX6_MISC1				0x0160
+#define IMX6_MISC1_IRQ_TEMPHIGH			(1 << 29)
 /* Below LOW and PANIC bits are only for TEMPMON_IMX6SX */
-#define MISC1_IRQ_TEMPLOW		(1 << 28)
-#define MISC1_IRQ_TEMPPANIC		(1 << 27)
-
-#define TEMPSENSE0			0x0180
-#define TEMPSENSE0_ALARM_VALUE_SHIFT	20
-#define TEMPSENSE0_ALARM_VALUE_MASK	(0xfff << TEMPSENSE0_ALARM_VALUE_SHIFT)
-#define TEMPSENSE0_TEMP_CNT_SHIFT	8
-#define TEMPSENSE0_TEMP_CNT_MASK	(0xfff << TEMPSENSE0_TEMP_CNT_SHIFT)
-#define TEMPSENSE0_FINISHED		(1 << 2)
-#define TEMPSENSE0_MEASURE_TEMP		(1 << 1)
-#define TEMPSENSE0_POWER_DOWN		(1 << 0)
-
-#define TEMPSENSE1			0x0190
-#define TEMPSENSE1_MEASURE_FREQ		0xffff
-/* Below TEMPSENSE2 is only for TEMPMON_IMX6SX */
-#define TEMPSENSE2			0x0290
-#define TEMPSENSE2_LOW_VALUE_SHIFT	0
-#define TEMPSENSE2_LOW_VALUE_MASK	0xfff
-#define TEMPSENSE2_PANIC_VALUE_SHIFT	16
-#define TEMPSENSE2_PANIC_VALUE_MASK	0xfff0000
+#define IMX6_MISC1_IRQ_TEMPLOW			(1 << 28)
+#define IMX6_MISC1_IRQ_TEMPPANIC		(1 << 27)
+
+#define IMX6_TEMPSENSE0				0x0180
+#define IMX6_TEMPSENSE0_ALARM_VALUE_SHIFT	20
+#define IMX6_TEMPSENSE0_ALARM_VALUE_MASK	(0xfff << 20)
+#define IMX6_TEMPSENSE0_TEMP_CNT_SHIFT		8
+#define IMX6_TEMPSENSE0_TEMP_CNT_MASK		(0xfff << 8)
+#define IMX6_TEMPSENSE0_FINISHED		(1 << 2)
+#define IMX6_TEMPSENSE0_MEASURE_TEMP		(1 << 1)
+#define IMX6_TEMPSENSE0_POWER_DOWN		(1 << 0)
+
+#define IMX6_TEMPSENSE1				0x0190
+#define IMX6_TEMPSENSE1_MEASURE_FREQ		0xffff
+#define IMX6_TEMPSENSE1_MEASURE_FREQ_SHIFT	0
 
 #define OCOTP_MEM0			0x0480
 #define OCOTP_ANA1			0x04e0
 
+/* Below TEMPSENSE2 is only for TEMPMON_IMX6SX */
+#define IMX6_TEMPSENSE2				0x0290
+#define IMX6_TEMPSENSE2_LOW_VALUE_SHIFT		0
+#define IMX6_TEMPSENSE2_LOW_VALUE_MASK		0xfff
+#define IMX6_TEMPSENSE2_PANIC_VALUE_SHIFT	16
+#define IMX6_TEMPSENSE2_PANIC_VALUE_MASK	0xfff0000
+
+/* i.MX7 specific */
+#define IMX7_ANADIG_DIGPROG			0x800
+#define IMX7_TEMPSENSE0				0x300
+#define IMX7_TEMPSENSE0_PANIC_ALARM_SHIFT	18
+#define IMX7_TEMPSENSE0_PANIC_ALARM_MASK	(0x1ff << 18)
+#define IMX7_TEMPSENSE0_HIGH_ALARM_SHIFT	9
+#define IMX7_TEMPSENSE0_HIGH_ALARM_MASK		(0x1ff << 9)
+#define IMX7_TEMPSENSE0_LOW_ALARM_SHIFT		0
+#define IMX7_TEMPSENSE0_LOW_ALARM_MASK		0x1ff
+
+#define IMX7_TEMPSENSE1				0x310
+#define IMX7_TEMPSENSE1_MEASURE_FREQ_SHIFT	16
+#define IMX7_TEMPSENSE1_MEASURE_FREQ_MASK	(0xffff << 16)
+#define IMX7_TEMPSENSE1_FINISHED		(1 << 11)
+#define IMX7_TEMPSENSE1_MEASURE_TEMP		(1 << 10)
+#define IMX7_TEMPSENSE1_POWER_DOWN		(1 << 9)
+#define IMX7_TEMPSENSE1_TEMP_VALUE_SHIFT	0
+#define IMX7_TEMPSENSE1_TEMP_VALUE_MASK		0x1ff
+
 /* The driver supports 1 passive trip point and 1 critical trip point */
 enum imx_thermal_trip {
 	IMX_TRIP_PASSIVE,
@@ -72,17 +94,114 @@ enum imx_thermal_trip {
 
 #define TEMPMON_IMX6Q			1
 #define TEMPMON_IMX6SX			2
+#define TEMPMON_IMX7D			3
 
 struct thermal_soc_data {
 	u32 version;
+
+	u32 sensor_ctrl;
+	u32 power_down_mask;
+	u32 measure_temp_mask;
+
+	u32 measure_freq_ctrl;
+	u32 measure_freq_mask;
+	u32 measure_freq_shift;
+
+	u32 temp_data;
+	u32 temp_value_mask;
+	u32 temp_value_shift;
+	u32 temp_valid_mask;
+
+	u32 panic_alarm_ctrl;
+	u32 panic_alarm_mask;
+	u32 panic_alarm_shift;
+
+	u32 high_alarm_ctrl;
+	u32 high_alarm_mask;
+	u32 high_alarm_shift;
+
+	u32 low_alarm_ctrl;
+	u32 low_alarm_mask;
+	u32 low_alarm_shift;
 };
 
 static struct thermal_soc_data thermal_imx6q_data = {
 	.version = TEMPMON_IMX6Q,
+
+	.sensor_ctrl = IMX6_TEMPSENSE0,
+	.power_down_mask = IMX6_TEMPSENSE0_POWER_DOWN,
+	.measure_temp_mask = IMX6_TEMPSENSE0_MEASURE_TEMP,
+
+	.measure_freq_ctrl = IMX6_TEMPSENSE1,
+	.measure_freq_shift = IMX6_TEMPSENSE1_MEASURE_FREQ_SHIFT,
+	.measure_freq_mask = IMX6_TEMPSENSE1_MEASURE_FREQ,
+
+	.temp_data = IMX6_TEMPSENSE0,
+	.temp_value_mask = IMX6_TEMPSENSE0_TEMP_CNT_MASK,
+	.temp_value_shift = IMX6_TEMPSENSE0_TEMP_CNT_SHIFT,
+	.temp_valid_mask = IMX6_TEMPSENSE0_FINISHED,
+
+	.high_alarm_ctrl = IMX6_TEMPSENSE0,
+	.high_alarm_mask = IMX6_TEMPSENSE0_ALARM_VALUE_MASK,
+	.high_alarm_shift = IMX6_TEMPSENSE0_ALARM_VALUE_SHIFT,
 };
 
 static struct thermal_soc_data thermal_imx6sx_data = {
 	.version = TEMPMON_IMX6SX,
+
+	.sensor_ctrl = IMX6_TEMPSENSE0,
+	.power_down_mask = IMX6_TEMPSENSE0_POWER_DOWN,
+	.measure_temp_mask = IMX6_TEMPSENSE0_MEASURE_TEMP,
+
+	.measure_freq_ctrl = IMX6_TEMPSENSE1,
+	.measure_freq_shift = IMX6_TEMPSENSE1_MEASURE_FREQ_SHIFT,
+	.measure_freq_mask = IMX6_TEMPSENSE1_MEASURE_FREQ,
+
+	.temp_data = IMX6_TEMPSENSE0,
+	.temp_value_mask = IMX6_TEMPSENSE0_TEMP_CNT_MASK,
+	.temp_value_shift = IMX6_TEMPSENSE0_TEMP_CNT_SHIFT,
+	.temp_valid_mask = IMX6_TEMPSENSE0_FINISHED,
+
+	.high_alarm_ctrl = IMX6_TEMPSENSE0,
+	.high_alarm_mask = IMX6_TEMPSENSE0_ALARM_VALUE_MASK,
+	.high_alarm_shift = IMX6_TEMPSENSE0_ALARM_VALUE_SHIFT,
+
+	.panic_alarm_ctrl = IMX6_TEMPSENSE2,
+	.panic_alarm_mask = IMX6_TEMPSENSE2_PANIC_VALUE_MASK,
+	.panic_alarm_shift = IMX6_TEMPSENSE2_PANIC_VALUE_SHIFT,
+
+	.low_alarm_ctrl = IMX6_TEMPSENSE2,
+	.low_alarm_mask = IMX6_TEMPSENSE2_LOW_VALUE_MASK,
+	.low_alarm_shift = IMX6_TEMPSENSE2_LOW_VALUE_SHIFT,
+};
+
+static struct thermal_soc_data thermal_imx7d_data = {
+	.version = TEMPMON_IMX7D,
+
+	.sensor_ctrl = IMX7_TEMPSENSE1,
+	.power_down_mask = IMX7_TEMPSENSE1_POWER_DOWN,
+	.measure_temp_mask = IMX7_TEMPSENSE1_MEASURE_TEMP,
+
+	.measure_freq_ctrl = IMX7_TEMPSENSE1,
+	.measure_freq_shift = IMX7_TEMPSENSE1_MEASURE_FREQ_SHIFT,
+	.measure_freq_mask = IMX7_TEMPSENSE1_MEASURE_FREQ_MASK,
+
+	.temp_data = IMX7_TEMPSENSE1,
+	.temp_value_mask = IMX7_TEMPSENSE1_TEMP_VALUE_MASK,
+	.temp_value_shift = IMX7_TEMPSENSE1_TEMP_VALUE_SHIFT,
+	.temp_valid_mask = IMX7_TEMPSENSE1_FINISHED,
+
+	.panic_alarm_ctrl = IMX7_TEMPSENSE1,
+	.panic_alarm_mask = IMX7_TEMPSENSE0_PANIC_ALARM_MASK,
+	.panic_alarm_shift = IMX7_TEMPSENSE0_PANIC_ALARM_SHIFT,
+
+	.high_alarm_ctrl = IMX7_TEMPSENSE0,
+	.high_alarm_mask = IMX7_TEMPSENSE0_HIGH_ALARM_MASK,
+	.high_alarm_shift = IMX7_TEMPSENSE0_HIGH_ALARM_SHIFT,
+
+	.low_alarm_ctrl = IMX7_TEMPSENSE0,
+	.low_alarm_mask = IMX7_TEMPSENSE0_LOW_ALARM_MASK,
+	.low_alarm_shift = IMX7_TEMPSENSE0_LOW_ALARM_SHIFT,
 };
 
 struct imx_thermal_data {
@@ -107,31 +226,42 @@ struct imx_thermal_data {
 static void imx_set_panic_temp(struct imx_thermal_data *data,
 			       int panic_temp)
 {
+	const struct thermal_soc_data *soc_data = data->socdata;
 	struct regmap *map = data->tempmon;
 	int critical_value;
 
 	critical_value = (data->c2 - panic_temp) / data->c1;
-	regmap_write(map, TEMPSENSE2 + REG_CLR, TEMPSENSE2_PANIC_VALUE_MASK);
-	regmap_write(map, TEMPSENSE2 + REG_SET, critical_value <<
-			TEMPSENSE2_PANIC_VALUE_SHIFT);
+
+	regmap_write(map, soc_data->panic_alarm_ctrl + REG_CLR,
+		     soc_data->panic_alarm_mask);
+	regmap_write(map, soc_data->panic_alarm_ctrl + REG_SET,
+		     critical_value << soc_data->panic_alarm_shift);
 }
 
 static void imx_set_alarm_temp(struct imx_thermal_data *data,
 			       int alarm_temp)
 {
 	struct regmap *map = data->tempmon;
+	const struct thermal_soc_data *soc_data = data->socdata;
 	int alarm_value;
 
 	data->alarm_temp = alarm_temp;
-	alarm_value = (data->c2 - alarm_temp) / data->c1;
-	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_ALARM_VALUE_MASK);
-	regmap_write(map, TEMPSENSE0 + REG_SET, alarm_value <<
-			TEMPSENSE0_ALARM_VALUE_SHIFT);
+
+	if (data->socdata->version == TEMPMON_IMX7D)
+		alarm_value = alarm_temp / 1000 + data->c1 - 25;
+	else
+		alarm_value = (data->c2 - alarm_temp) / data->c1;
+
+	regmap_write(map, soc_data->high_alarm_ctrl + REG_CLR,
+		     soc_data->high_alarm_mask);
+	regmap_write(map, soc_data->high_alarm_ctrl + REG_SET,
+		     alarm_value << soc_data->high_alarm_shift);
 }
 
 static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
 {
 	struct imx_thermal_data *data = tz->devdata;
+	const struct thermal_soc_data *soc_data = data->socdata;
 	struct regmap *map = data->tempmon;
 	unsigned int n_meas;
 	bool wait;
@@ -139,16 +269,18 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
 
 	if (data->mode == THERMAL_DEVICE_ENABLED) {
 		/* Check if a measurement is currently in progress */
-		regmap_read(map, TEMPSENSE0, &val);
-		wait = !(val & TEMPSENSE0_FINISHED);
+		regmap_read(map, soc_data->temp_data, &val);
+		wait = !(val & soc_data->temp_valid_mask);
 	} else {
 		/*
 		 * Every time we measure the temperature, we will power on the
 		 * temperature sensor, enable measurements, take a reading,
 		 * disable measurements, power off the temperature sensor.
 		 */
-		regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);
-		regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);
+		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
+			    soc_data->power_down_mask);
+		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
+			    soc_data->measure_temp_mask);
 
 		wait = true;
 	}
@@ -160,22 +292,28 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
 	if (wait)
 		usleep_range(20, 50);
 
-	regmap_read(map, TEMPSENSE0, &val);
+	regmap_read(map, soc_data->temp_data, &val);
 
 	if (data->mode != THERMAL_DEVICE_ENABLED) {
-		regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP);
-		regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);
+		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
+			     soc_data->measure_temp_mask);
+		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
+			     soc_data->power_down_mask);
 	}
 
-	if ((val & TEMPSENSE0_FINISHED) == 0) {
+	if ((val & soc_data->temp_valid_mask) == 0) {
 		dev_dbg(&tz->device, "temp measurement never finished\n");
 		return -EAGAIN;
 	}
 
-	n_meas = (val & TEMPSENSE0_TEMP_CNT_MASK) >> TEMPSENSE0_TEMP_CNT_SHIFT;
+	n_meas = (val & soc_data->temp_value_mask)
+		>> soc_data->temp_value_shift;
 
 	/* See imx_init_calib() for formula derivation */
-	*temp = data->c2 - n_meas * data->c1;
+	if (data->socdata->version == TEMPMON_IMX7D)
+		*temp = (n_meas - data->c1 + 25) * 1000;
+	else
+		*temp = data->c2 - n_meas * data->c1;
 
 	/* Update alarm value to next higher trip point for TEMPMON_IMX6Q */
 	if (data->socdata->version == TEMPMON_IMX6Q) {
@@ -219,21 +357,26 @@ static int imx_set_mode(struct thermal_zone_device *tz,
 {
 	struct imx_thermal_data *data = tz->devdata;
 	struct regmap *map = data->tempmon;
+	const struct thermal_soc_data *soc_data = data->socdata;
 
 	if (mode == THERMAL_DEVICE_ENABLED) {
 		tz->polling_delay = IMX_POLLING_DELAY;
 		tz->passive_delay = IMX_PASSIVE_DELAY;
 
-		regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);
-		regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);
+		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
+			     soc_data->power_down_mask);
+		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
+			     soc_data->measure_temp_mask);
 
 		if (!data->irq_enabled) {
 			data->irq_enabled = true;
 			enable_irq(data->irq);
 		}
 	} else {
-		regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP);
-		regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);
+		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
+			     soc_data->measure_temp_mask);
+		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
+			     soc_data->power_down_mask);
 
 		tz->polling_delay = 0;
 		tz->passive_delay = 0;
@@ -355,6 +498,15 @@ static int imx_init_calib(struct platform_device *pdev, u32 ocotp_ana1)
 	}
 
 	/*
+	 * On i.MX7D, we only use the calibration data at 25C to get the temp,
+	 * Tmeas = ( Nmeas - n1) + 25; n1 is the fuse value for 25C.
+	 */
+	if (data->socdata->version == TEMPMON_IMX7D) {
+		data->c1 = (ocotp_ana1 >> 9) & 0x1ff;
+		return 0;
+	}
+
+	/*
 	 * The sensor is calibrated at 25 °C (aka T1) and the value measured
 	 * (aka N1) at this temperature is provided in bits [31:20] in the
 	 * i.MX's OCOTP value ANA1.
@@ -492,6 +644,7 @@ static irqreturn_t imx_thermal_alarm_irq_thread(int irq, void *dev)
 static const struct of_device_id of_imx_thermal_match[] = {
 	{ .compatible = "fsl,imx6q-tempmon", .data = &thermal_imx6q_data, },
 	{ .compatible = "fsl,imx6sx-tempmon", .data = &thermal_imx6sx_data, },
+	{ .compatible = "fsl,imx7d-tempmon", .data = &thermal_imx7d_data, },
 	{ /* end */ }
 };
 MODULE_DEVICE_TABLE(of, of_imx_thermal_match);
@@ -523,14 +676,15 @@ static int imx_thermal_probe(struct platform_device *pdev)
 
 	/* make sure the IRQ flag is clear before enabling irq on i.MX6SX */
 	if (data->socdata->version == TEMPMON_IMX6SX) {
-		regmap_write(map, MISC1 + REG_CLR, MISC1_IRQ_TEMPHIGH |
-			MISC1_IRQ_TEMPLOW | MISC1_IRQ_TEMPPANIC);
+		regmap_write(map, IMX6_MISC1 + REG_CLR,
+			IMX6_MISC1_IRQ_TEMPHIGH | IMX6_MISC1_IRQ_TEMPLOW
+			| IMX6_MISC1_IRQ_TEMPPANIC);
 		/*
 		 * reset value of LOW ALARM is incorrect, set it to lowest
 		 * value to avoid false trigger of low alarm.
 		 */
-		regmap_write(map, TEMPSENSE2 + REG_SET,
-			TEMPSENSE2_LOW_VALUE_MASK);
+		regmap_write(map, data->socdata->low_alarm_ctrl + REG_SET,
+			     data->socdata->low_alarm_mask);
 	}
 
 	data->irq = platform_get_irq(pdev, 0);
@@ -557,11 +711,17 @@ static int imx_thermal_probe(struct platform_device *pdev)
 	}
 
 	/* Make sure sensor is in known good state for measurements */
-	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);
-	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP);
-	regmap_write(map, TEMPSENSE1 + REG_CLR, TEMPSENSE1_MEASURE_FREQ);
-	regmap_write(map, MISC0 + REG_SET, MISC0_REFTOP_SELBIASOFF);
-	regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);
+	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
+		     data->socdata->power_down_mask);
+	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
+		     data->socdata->measure_temp_mask);
+	regmap_write(map, data->socdata->measure_freq_ctrl + REG_CLR,
+		     data->socdata->measure_freq_mask);
+	if (data->socdata->version != TEMPMON_IMX7D)
+		regmap_write(map, IMX6_MISC0 + REG_SET,
+			IMX6_MISC0_REFTOP_SELBIASOFF);
+	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
+		     data->socdata->power_down_mask);
 
 	data->policy = cpufreq_cpu_get(0);
 	if (!data->policy) {
@@ -626,16 +786,20 @@ static int imx_thermal_probe(struct platform_device *pdev)
 		 data->temp_passive / 1000);
 
 	/* Enable measurements at ~ 10 Hz */
-	regmap_write(map, TEMPSENSE1 + REG_CLR, TEMPSENSE1_MEASURE_FREQ);
+	regmap_write(map, data->socdata->measure_freq_ctrl + REG_CLR,
+		     data->socdata->measure_freq_mask);
 	measure_freq = DIV_ROUND_UP(32768, 10); /* 10 Hz */
-	regmap_write(map, TEMPSENSE1 + REG_SET, measure_freq);
+	regmap_write(map, data->socdata->measure_freq_ctrl + REG_SET,
+		     measure_freq << data->socdata->measure_freq_shift);
 	imx_set_alarm_temp(data, data->temp_passive);
 
 	if (data->socdata->version == TEMPMON_IMX6SX)
 		imx_set_panic_temp(data, data->temp_critical);
 
-	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);
-	regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);
+	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
+		     data->socdata->power_down_mask);
+	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
+		     data->socdata->measure_temp_mask);
 
 	ret = devm_request_threaded_irq(&pdev->dev, data->irq,
 			imx_thermal_alarm_irq, imx_thermal_alarm_irq_thread,
@@ -661,7 +825,8 @@ static int imx_thermal_remove(struct platform_device *pdev)
 	struct regmap *map = data->tempmon;
 
 	/* Disable measurements */
-	regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);
+	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
+		     data->socdata->power_down_mask);
 	if (!IS_ERR(data->thermal_clk))
 		clk_disable_unprepare(data->thermal_clk);
 
@@ -684,8 +849,10 @@ static int imx_thermal_suspend(struct device *dev)
 	 * temperature will be read as the thermal sensor is powered
 	 * down.
 	 */
-	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP);
-	regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);
+	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
+		     data->socdata->measure_temp_mask);
+	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
+		     data->socdata->power_down_mask);
 	data->mode = THERMAL_DEVICE_DISABLED;
 	clk_disable_unprepare(data->thermal_clk);
 
@@ -702,8 +869,10 @@ static int imx_thermal_resume(struct device *dev)
 	if (ret)
 		return ret;
 	/* Enabled thermal sensor after resume */
-	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);
-	regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);
+	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
+		     data->socdata->power_down_mask);
+	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
+		     data->socdata->measure_temp_mask);
 	data->mode = THERMAL_DEVICE_ENABLED;
 
 	return 0;
-- 
2.7.4

Re: [PATCH V6 1/2] ARM: dts: imx7s: add temperature monitor support

[Shawn Guo]

On Fri, Mar 02, 2018 at 09:59:29AM +0800, Anson Huang wrote:
> Add i.MX7 temperature monitor support.
> 
> Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
> Acked-by: Dong Aisheng <aisheng.dong@nxp.com>
> Acked-by: Shawn Guo <shawnguo@kernel.org>
> Reviewed-by: Rob Herring <robh@kernel.org>

Applied this dts patch, thanks.

RE: [PATCH V6 2/2] thermal: imx: add i.MX7 thermal sensor support

[Anson Huang]

Ping...

@rui.zhang@intel.com, can you help review this patch?

Anson Huang
Best Regards!


> -----Original Message-----
> From: linux-arm-kernel [mailto:linux-arm-kernel-bounces@lists.infradead.org]
> On Behalf Of Anson Huang
> Sent: Friday, March 2, 2018 10:00 AM
> To: Leonard Crestez <leonard.crestez@nxp.com>; rui.zhang@intel.com;
> edubezval@gmail.com; robh+dt@kernel.org; mark.rutland@arm.com;
> shawnguo@kernel.org; kernel@pengutronix.de; Fabio Estevam
> <fabio.estevam@nxp.com>; linux@armlinux.org.uk
> Cc: linux-arm-kernel@lists.infradead.org; devicetree@vger.kernel.org;
> dl-linux-imx <linux-imx@nxp.com>; linux-kernel@vger.kernel.org;
> linux-pm@vger.kernel.org
> Subject: [PATCH V6 2/2] thermal: imx: add i.MX7 thermal sensor support
> 
> This patch adds i.MX7 thermal sensor support, most of the i.MX7 thermal sensor
> functions are same with
> i.MX6 except the registers offset/layout, so we move those registers
> offset/layout definitions to soc data structure.
> 
> i.MX7 uses single calibration data @25C, the calibration data is located at
> OCOTP offset 0x4F0, bit[17:9], the formula is as below:
> 
> Tmeas = (Nmeas - n1) + 25; n1 is the fuse value for 25C.
> 
> Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
> Signed-off-by: Bai Ping <ping.bai@nxp.com>
> Acked-by: Dong Aisheng <aisheng.dong@nxp.com>
> Acked-by: Shawn Guo <shawnguo@kernel.org>
> Reviewed-by: Rob Herring <robh@kernel.org>
> ---
> changes since V5:
> 	no code change, just add Reviewed-by.
>  .../devicetree/bindings/thermal/imx-thermal.txt    |   9 +-
>  drivers/thermal/imx_thermal.c                      | 295
> ++++++++++++++++-----
>  2 files changed, 239 insertions(+), 65 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/thermal/imx-thermal.txt
> b/Documentation/devicetree/bindings/thermal/imx-thermal.txt
> index 28be51a..38bffcc 100644
> --- a/Documentation/devicetree/bindings/thermal/imx-thermal.txt
> +++ b/Documentation/devicetree/bindings/thermal/imx-thermal.txt
> @@ -1,8 +1,13 @@
>  * Temperature Monitor (TEMPMON) on Freescale i.MX SoCs
> 
>  Required properties:
> -- compatible : "fsl,imx6q-tempmon" for i.MX6Q, "fsl,imx6sx-tempmon" for
> i.MX6SX.
> -  i.MX6SX has two more IRQs than i.MX6Q, one is IRQ_LOW and the other is
> IRQ_PANIC,
> +- compatible : must be one of following:
> +  - "fsl,imx6q-tempmon" for i.MX6Q,
> +  - "fsl,imx6sx-tempmon" for i.MX6SX,
> +  - "fsl,imx7d-tempmon" for i.MX7S/D.
> +- interrupts : the interrupt output of the controller:
> +  i.MX6Q has one IRQ which will be triggered when temperature is higher
> +than high threshold,
> +  i.MX6SX and i.MX7S/D have two more IRQs than i.MX6Q, one is IRQ_LOW
> +and the other is IRQ_PANIC,
>    when temperature is below than low threshold, IRQ_LOW will be triggered,
> when temperature
>    is higher than panic threshold, system will auto reboot by SRC module.
>  - fsl,tempmon : phandle pointer to system controller that contains TEMPMON
> diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
> index a67781b..569d41b 100644
> --- a/drivers/thermal/imx_thermal.c
> +++ b/drivers/thermal/imx_thermal.c
> @@ -31,35 +31,57 @@
>  #define REG_CLR		0x8
>  #define REG_TOG		0xc
> 
> -#define MISC0				0x0150
> -#define MISC0_REFTOP_SELBIASOFF		(1 << 3)
> -#define MISC1				0x0160
> -#define MISC1_IRQ_TEMPHIGH		(1 << 29)
> +/* i.MX6 specific */
> +#define IMX6_MISC0				0x0150
> +#define IMX6_MISC0_REFTOP_SELBIASOFF		(1 << 3)
> +#define IMX6_MISC1				0x0160
> +#define IMX6_MISC1_IRQ_TEMPHIGH			(1 << 29)
>  /* Below LOW and PANIC bits are only for TEMPMON_IMX6SX */
> -#define MISC1_IRQ_TEMPLOW		(1 << 28)
> -#define MISC1_IRQ_TEMPPANIC		(1 << 27)
> -
> -#define TEMPSENSE0			0x0180
> -#define TEMPSENSE0_ALARM_VALUE_SHIFT	20
> -#define TEMPSENSE0_ALARM_VALUE_MASK	(0xfff <<
> TEMPSENSE0_ALARM_VALUE_SHIFT)
> -#define TEMPSENSE0_TEMP_CNT_SHIFT	8
> -#define TEMPSENSE0_TEMP_CNT_MASK	(0xfff <<
> TEMPSENSE0_TEMP_CNT_SHIFT)
> -#define TEMPSENSE0_FINISHED		(1 << 2)
> -#define TEMPSENSE0_MEASURE_TEMP		(1 << 1)
> -#define TEMPSENSE0_POWER_DOWN		(1 << 0)
> -
> -#define TEMPSENSE1			0x0190
> -#define TEMPSENSE1_MEASURE_FREQ		0xffff
> -/* Below TEMPSENSE2 is only for TEMPMON_IMX6SX */
> -#define TEMPSENSE2			0x0290
> -#define TEMPSENSE2_LOW_VALUE_SHIFT	0
> -#define TEMPSENSE2_LOW_VALUE_MASK	0xfff
> -#define TEMPSENSE2_PANIC_VALUE_SHIFT	16
> -#define TEMPSENSE2_PANIC_VALUE_MASK	0xfff0000
> +#define IMX6_MISC1_IRQ_TEMPLOW			(1 << 28)
> +#define IMX6_MISC1_IRQ_TEMPPANIC		(1 << 27)
> +
> +#define IMX6_TEMPSENSE0				0x0180
> +#define IMX6_TEMPSENSE0_ALARM_VALUE_SHIFT	20
> +#define IMX6_TEMPSENSE0_ALARM_VALUE_MASK	(0xfff << 20)
> +#define IMX6_TEMPSENSE0_TEMP_CNT_SHIFT		8
> +#define IMX6_TEMPSENSE0_TEMP_CNT_MASK		(0xfff << 8)
> +#define IMX6_TEMPSENSE0_FINISHED		(1 << 2)
> +#define IMX6_TEMPSENSE0_MEASURE_TEMP		(1 << 1)
> +#define IMX6_TEMPSENSE0_POWER_DOWN		(1 << 0)
> +
> +#define IMX6_TEMPSENSE1				0x0190
> +#define IMX6_TEMPSENSE1_MEASURE_FREQ		0xffff
> +#define IMX6_TEMPSENSE1_MEASURE_FREQ_SHIFT	0
> 
>  #define OCOTP_MEM0			0x0480
>  #define OCOTP_ANA1			0x04e0
> 
> +/* Below TEMPSENSE2 is only for TEMPMON_IMX6SX */
> +#define IMX6_TEMPSENSE2				0x0290
> +#define IMX6_TEMPSENSE2_LOW_VALUE_SHIFT		0
> +#define IMX6_TEMPSENSE2_LOW_VALUE_MASK		0xfff
> +#define IMX6_TEMPSENSE2_PANIC_VALUE_SHIFT	16
> +#define IMX6_TEMPSENSE2_PANIC_VALUE_MASK	0xfff0000
> +
> +/* i.MX7 specific */
> +#define IMX7_ANADIG_DIGPROG			0x800
> +#define IMX7_TEMPSENSE0				0x300
> +#define IMX7_TEMPSENSE0_PANIC_ALARM_SHIFT	18
> +#define IMX7_TEMPSENSE0_PANIC_ALARM_MASK	(0x1ff << 18)
> +#define IMX7_TEMPSENSE0_HIGH_ALARM_SHIFT	9
> +#define IMX7_TEMPSENSE0_HIGH_ALARM_MASK		(0x1ff << 9)
> +#define IMX7_TEMPSENSE0_LOW_ALARM_SHIFT		0
> +#define IMX7_TEMPSENSE0_LOW_ALARM_MASK		0x1ff
> +
> +#define IMX7_TEMPSENSE1				0x310
> +#define IMX7_TEMPSENSE1_MEASURE_FREQ_SHIFT	16
> +#define IMX7_TEMPSENSE1_MEASURE_FREQ_MASK	(0xffff << 16)
> +#define IMX7_TEMPSENSE1_FINISHED		(1 << 11)
> +#define IMX7_TEMPSENSE1_MEASURE_TEMP		(1 << 10)
> +#define IMX7_TEMPSENSE1_POWER_DOWN		(1 << 9)
> +#define IMX7_TEMPSENSE1_TEMP_VALUE_SHIFT	0
> +#define IMX7_TEMPSENSE1_TEMP_VALUE_MASK		0x1ff
> +
>  /* The driver supports 1 passive trip point and 1 critical trip point */  enum
> imx_thermal_trip {
>  	IMX_TRIP_PASSIVE,
> @@ -72,17 +94,114 @@ enum imx_thermal_trip {
> 
>  #define TEMPMON_IMX6Q			1
>  #define TEMPMON_IMX6SX			2
> +#define TEMPMON_IMX7D			3
> 
>  struct thermal_soc_data {
>  	u32 version;
> +
> +	u32 sensor_ctrl;
> +	u32 power_down_mask;
> +	u32 measure_temp_mask;
> +
> +	u32 measure_freq_ctrl;
> +	u32 measure_freq_mask;
> +	u32 measure_freq_shift;
> +
> +	u32 temp_data;
> +	u32 temp_value_mask;
> +	u32 temp_value_shift;
> +	u32 temp_valid_mask;
> +
> +	u32 panic_alarm_ctrl;
> +	u32 panic_alarm_mask;
> +	u32 panic_alarm_shift;
> +
> +	u32 high_alarm_ctrl;
> +	u32 high_alarm_mask;
> +	u32 high_alarm_shift;
> +
> +	u32 low_alarm_ctrl;
> +	u32 low_alarm_mask;
> +	u32 low_alarm_shift;
>  };
> 
>  static struct thermal_soc_data thermal_imx6q_data = {
>  	.version = TEMPMON_IMX6Q,
> +
> +	.sensor_ctrl = IMX6_TEMPSENSE0,
> +	.power_down_mask = IMX6_TEMPSENSE0_POWER_DOWN,
> +	.measure_temp_mask = IMX6_TEMPSENSE0_MEASURE_TEMP,
> +
> +	.measure_freq_ctrl = IMX6_TEMPSENSE1,
> +	.measure_freq_shift = IMX6_TEMPSENSE1_MEASURE_FREQ_SHIFT,
> +	.measure_freq_mask = IMX6_TEMPSENSE1_MEASURE_FREQ,
> +
> +	.temp_data = IMX6_TEMPSENSE0,
> +	.temp_value_mask = IMX6_TEMPSENSE0_TEMP_CNT_MASK,
> +	.temp_value_shift = IMX6_TEMPSENSE0_TEMP_CNT_SHIFT,
> +	.temp_valid_mask = IMX6_TEMPSENSE0_FINISHED,
> +
> +	.high_alarm_ctrl = IMX6_TEMPSENSE0,
> +	.high_alarm_mask = IMX6_TEMPSENSE0_ALARM_VALUE_MASK,
> +	.high_alarm_shift = IMX6_TEMPSENSE0_ALARM_VALUE_SHIFT,
>  };
> 
>  static struct thermal_soc_data thermal_imx6sx_data = {
>  	.version = TEMPMON_IMX6SX,
> +
> +	.sensor_ctrl = IMX6_TEMPSENSE0,
> +	.power_down_mask = IMX6_TEMPSENSE0_POWER_DOWN,
> +	.measure_temp_mask = IMX6_TEMPSENSE0_MEASURE_TEMP,
> +
> +	.measure_freq_ctrl = IMX6_TEMPSENSE1,
> +	.measure_freq_shift = IMX6_TEMPSENSE1_MEASURE_FREQ_SHIFT,
> +	.measure_freq_mask = IMX6_TEMPSENSE1_MEASURE_FREQ,
> +
> +	.temp_data = IMX6_TEMPSENSE0,
> +	.temp_value_mask = IMX6_TEMPSENSE0_TEMP_CNT_MASK,
> +	.temp_value_shift = IMX6_TEMPSENSE0_TEMP_CNT_SHIFT,
> +	.temp_valid_mask = IMX6_TEMPSENSE0_FINISHED,
> +
> +	.high_alarm_ctrl = IMX6_TEMPSENSE0,
> +	.high_alarm_mask = IMX6_TEMPSENSE0_ALARM_VALUE_MASK,
> +	.high_alarm_shift = IMX6_TEMPSENSE0_ALARM_VALUE_SHIFT,
> +
> +	.panic_alarm_ctrl = IMX6_TEMPSENSE2,
> +	.panic_alarm_mask = IMX6_TEMPSENSE2_PANIC_VALUE_MASK,
> +	.panic_alarm_shift = IMX6_TEMPSENSE2_PANIC_VALUE_SHIFT,
> +
> +	.low_alarm_ctrl = IMX6_TEMPSENSE2,
> +	.low_alarm_mask = IMX6_TEMPSENSE2_LOW_VALUE_MASK,
> +	.low_alarm_shift = IMX6_TEMPSENSE2_LOW_VALUE_SHIFT, };
> +
> +static struct thermal_soc_data thermal_imx7d_data = {
> +	.version = TEMPMON_IMX7D,
> +
> +	.sensor_ctrl = IMX7_TEMPSENSE1,
> +	.power_down_mask = IMX7_TEMPSENSE1_POWER_DOWN,
> +	.measure_temp_mask = IMX7_TEMPSENSE1_MEASURE_TEMP,
> +
> +	.measure_freq_ctrl = IMX7_TEMPSENSE1,
> +	.measure_freq_shift = IMX7_TEMPSENSE1_MEASURE_FREQ_SHIFT,
> +	.measure_freq_mask = IMX7_TEMPSENSE1_MEASURE_FREQ_MASK,
> +
> +	.temp_data = IMX7_TEMPSENSE1,
> +	.temp_value_mask = IMX7_TEMPSENSE1_TEMP_VALUE_MASK,
> +	.temp_value_shift = IMX7_TEMPSENSE1_TEMP_VALUE_SHIFT,
> +	.temp_valid_mask = IMX7_TEMPSENSE1_FINISHED,
> +
> +	.panic_alarm_ctrl = IMX7_TEMPSENSE1,
> +	.panic_alarm_mask = IMX7_TEMPSENSE0_PANIC_ALARM_MASK,
> +	.panic_alarm_shift = IMX7_TEMPSENSE0_PANIC_ALARM_SHIFT,
> +
> +	.high_alarm_ctrl = IMX7_TEMPSENSE0,
> +	.high_alarm_mask = IMX7_TEMPSENSE0_HIGH_ALARM_MASK,
> +	.high_alarm_shift = IMX7_TEMPSENSE0_HIGH_ALARM_SHIFT,
> +
> +	.low_alarm_ctrl = IMX7_TEMPSENSE0,
> +	.low_alarm_mask = IMX7_TEMPSENSE0_LOW_ALARM_MASK,
> +	.low_alarm_shift = IMX7_TEMPSENSE0_LOW_ALARM_SHIFT,
>  };
> 
>  struct imx_thermal_data {
> @@ -107,31 +226,42 @@ struct imx_thermal_data {  static void
> imx_set_panic_temp(struct imx_thermal_data *data,
>  			       int panic_temp)
>  {
> +	const struct thermal_soc_data *soc_data = data->socdata;
>  	struct regmap *map = data->tempmon;
>  	int critical_value;
> 
>  	critical_value = (data->c2 - panic_temp) / data->c1;
> -	regmap_write(map, TEMPSENSE2 + REG_CLR,
> TEMPSENSE2_PANIC_VALUE_MASK);
> -	regmap_write(map, TEMPSENSE2 + REG_SET, critical_value <<
> -			TEMPSENSE2_PANIC_VALUE_SHIFT);
> +
> +	regmap_write(map, soc_data->panic_alarm_ctrl + REG_CLR,
> +		     soc_data->panic_alarm_mask);
> +	regmap_write(map, soc_data->panic_alarm_ctrl + REG_SET,
> +		     critical_value << soc_data->panic_alarm_shift);
>  }
> 
>  static void imx_set_alarm_temp(struct imx_thermal_data *data,
>  			       int alarm_temp)
>  {
>  	struct regmap *map = data->tempmon;
> +	const struct thermal_soc_data *soc_data = data->socdata;
>  	int alarm_value;
> 
>  	data->alarm_temp = alarm_temp;
> -	alarm_value = (data->c2 - alarm_temp) / data->c1;
> -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_ALARM_VALUE_MASK);
> -	regmap_write(map, TEMPSENSE0 + REG_SET, alarm_value <<
> -			TEMPSENSE0_ALARM_VALUE_SHIFT);
> +
> +	if (data->socdata->version == TEMPMON_IMX7D)
> +		alarm_value = alarm_temp / 1000 + data->c1 - 25;
> +	else
> +		alarm_value = (data->c2 - alarm_temp) / data->c1;
> +
> +	regmap_write(map, soc_data->high_alarm_ctrl + REG_CLR,
> +		     soc_data->high_alarm_mask);
> +	regmap_write(map, soc_data->high_alarm_ctrl + REG_SET,
> +		     alarm_value << soc_data->high_alarm_shift);
>  }
> 
>  static int imx_get_temp(struct thermal_zone_device *tz, int *temp)  {
>  	struct imx_thermal_data *data = tz->devdata;
> +	const struct thermal_soc_data *soc_data = data->socdata;
>  	struct regmap *map = data->tempmon;
>  	unsigned int n_meas;
>  	bool wait;
> @@ -139,16 +269,18 @@ static int imx_get_temp(struct thermal_zone_device
> *tz, int *temp)
> 
>  	if (data->mode == THERMAL_DEVICE_ENABLED) {
>  		/* Check if a measurement is currently in progress */
> -		regmap_read(map, TEMPSENSE0, &val);
> -		wait = !(val & TEMPSENSE0_FINISHED);
> +		regmap_read(map, soc_data->temp_data, &val);
> +		wait = !(val & soc_data->temp_valid_mask);
>  	} else {
>  		/*
>  		 * Every time we measure the temperature, we will power on the
>  		 * temperature sensor, enable measurements, take a reading,
>  		 * disable measurements, power off the temperature sensor.
>  		 */
> -		regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_POWER_DOWN);
> -		regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_MEASURE_TEMP);
> +		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
> +			    soc_data->power_down_mask);
> +		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
> +			    soc_data->measure_temp_mask);
> 
>  		wait = true;
>  	}
> @@ -160,22 +292,28 @@ static int imx_get_temp(struct thermal_zone_device
> *tz, int *temp)
>  	if (wait)
>  		usleep_range(20, 50);
> 
> -	regmap_read(map, TEMPSENSE0, &val);
> +	regmap_read(map, soc_data->temp_data, &val);
> 
>  	if (data->mode != THERMAL_DEVICE_ENABLED) {
> -		regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_MEASURE_TEMP);
> -		regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_POWER_DOWN);
> +		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
> +			     soc_data->measure_temp_mask);
> +		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
> +			     soc_data->power_down_mask);
>  	}
> 
> -	if ((val & TEMPSENSE0_FINISHED) == 0) {
> +	if ((val & soc_data->temp_valid_mask) == 0) {
>  		dev_dbg(&tz->device, "temp measurement never finished\n");
>  		return -EAGAIN;
>  	}
> 
> -	n_meas = (val & TEMPSENSE0_TEMP_CNT_MASK) >>
> TEMPSENSE0_TEMP_CNT_SHIFT;
> +	n_meas = (val & soc_data->temp_value_mask)
> +		>> soc_data->temp_value_shift;
> 
>  	/* See imx_init_calib() for formula derivation */
> -	*temp = data->c2 - n_meas * data->c1;
> +	if (data->socdata->version == TEMPMON_IMX7D)
> +		*temp = (n_meas - data->c1 + 25) * 1000;
> +	else
> +		*temp = data->c2 - n_meas * data->c1;
> 
>  	/* Update alarm value to next higher trip point for TEMPMON_IMX6Q */
>  	if (data->socdata->version == TEMPMON_IMX6Q) { @@ -219,21 +357,26
> @@ static int imx_set_mode(struct thermal_zone_device *tz,  {
>  	struct imx_thermal_data *data = tz->devdata;
>  	struct regmap *map = data->tempmon;
> +	const struct thermal_soc_data *soc_data = data->socdata;
> 
>  	if (mode == THERMAL_DEVICE_ENABLED) {
>  		tz->polling_delay = IMX_POLLING_DELAY;
>  		tz->passive_delay = IMX_PASSIVE_DELAY;
> 
> -		regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_POWER_DOWN);
> -		regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_MEASURE_TEMP);
> +		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
> +			     soc_data->power_down_mask);
> +		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
> +			     soc_data->measure_temp_mask);
> 
>  		if (!data->irq_enabled) {
>  			data->irq_enabled = true;
>  			enable_irq(data->irq);
>  		}
>  	} else {
> -		regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_MEASURE_TEMP);
> -		regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_POWER_DOWN);
> +		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
> +			     soc_data->measure_temp_mask);
> +		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
> +			     soc_data->power_down_mask);
> 
>  		tz->polling_delay = 0;
>  		tz->passive_delay = 0;
> @@ -355,6 +498,15 @@ static int imx_init_calib(struct platform_device *pdev,
> u32 ocotp_ana1)
>  	}
> 
>  	/*
> +	 * On i.MX7D, we only use the calibration data at 25C to get the temp,
> +	 * Tmeas = ( Nmeas - n1) + 25; n1 is the fuse value for 25C.
> +	 */
> +	if (data->socdata->version == TEMPMON_IMX7D) {
> +		data->c1 = (ocotp_ana1 >> 9) & 0x1ff;
> +		return 0;
> +	}
> +
> +	/*
>  	 * The sensor is calibrated at 25 °C (aka T1) and the value measured
>  	 * (aka N1) at this temperature is provided in bits [31:20] in the
>  	 * i.MX's OCOTP value ANA1.
> @@ -492,6 +644,7 @@ static irqreturn_t imx_thermal_alarm_irq_thread(int
> irq, void *dev)  static const struct of_device_id of_imx_thermal_match[] = {
>  	{ .compatible = "fsl,imx6q-tempmon", .data = &thermal_imx6q_data, },
>  	{ .compatible = "fsl,imx6sx-tempmon", .data = &thermal_imx6sx_data, },
> +	{ .compatible = "fsl,imx7d-tempmon", .data = &thermal_imx7d_data, },
>  	{ /* end */ }
>  };
>  MODULE_DEVICE_TABLE(of, of_imx_thermal_match); @@ -523,14 +676,15
> @@ static int imx_thermal_probe(struct platform_device *pdev)
> 
>  	/* make sure the IRQ flag is clear before enabling irq on i.MX6SX */
>  	if (data->socdata->version == TEMPMON_IMX6SX) {
> -		regmap_write(map, MISC1 + REG_CLR, MISC1_IRQ_TEMPHIGH |
> -			MISC1_IRQ_TEMPLOW | MISC1_IRQ_TEMPPANIC);
> +		regmap_write(map, IMX6_MISC1 + REG_CLR,
> +			IMX6_MISC1_IRQ_TEMPHIGH | IMX6_MISC1_IRQ_TEMPLOW
> +			| IMX6_MISC1_IRQ_TEMPPANIC);
>  		/*
>  		 * reset value of LOW ALARM is incorrect, set it to lowest
>  		 * value to avoid false trigger of low alarm.
>  		 */
> -		regmap_write(map, TEMPSENSE2 + REG_SET,
> -			TEMPSENSE2_LOW_VALUE_MASK);
> +		regmap_write(map, data->socdata->low_alarm_ctrl + REG_SET,
> +			     data->socdata->low_alarm_mask);
>  	}
> 
>  	data->irq = platform_get_irq(pdev, 0); @@ -557,11 +711,17 @@ static int
> imx_thermal_probe(struct platform_device *pdev)
>  	}
> 
>  	/* Make sure sensor is in known good state for measurements */
> -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_POWER_DOWN);
> -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_MEASURE_TEMP);
> -	regmap_write(map, TEMPSENSE1 + REG_CLR,
> TEMPSENSE1_MEASURE_FREQ);
> -	regmap_write(map, MISC0 + REG_SET, MISC0_REFTOP_SELBIASOFF);
> -	regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_POWER_DOWN);
> +	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> +		     data->socdata->power_down_mask);
> +	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> +		     data->socdata->measure_temp_mask);
> +	regmap_write(map, data->socdata->measure_freq_ctrl + REG_CLR,
> +		     data->socdata->measure_freq_mask);
> +	if (data->socdata->version != TEMPMON_IMX7D)
> +		regmap_write(map, IMX6_MISC0 + REG_SET,
> +			IMX6_MISC0_REFTOP_SELBIASOFF);
> +	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
> +		     data->socdata->power_down_mask);
> 
>  	data->policy = cpufreq_cpu_get(0);
>  	if (!data->policy) {
> @@ -626,16 +786,20 @@ static int imx_thermal_probe(struct platform_device
> *pdev)
>  		 data->temp_passive / 1000);
> 
>  	/* Enable measurements at ~ 10 Hz */
> -	regmap_write(map, TEMPSENSE1 + REG_CLR,
> TEMPSENSE1_MEASURE_FREQ);
> +	regmap_write(map, data->socdata->measure_freq_ctrl + REG_CLR,
> +		     data->socdata->measure_freq_mask);
>  	measure_freq = DIV_ROUND_UP(32768, 10); /* 10 Hz */
> -	regmap_write(map, TEMPSENSE1 + REG_SET, measure_freq);
> +	regmap_write(map, data->socdata->measure_freq_ctrl + REG_SET,
> +		     measure_freq << data->socdata->measure_freq_shift);
>  	imx_set_alarm_temp(data, data->temp_passive);
> 
>  	if (data->socdata->version == TEMPMON_IMX6SX)
>  		imx_set_panic_temp(data, data->temp_critical);
> 
> -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_POWER_DOWN);
> -	regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_MEASURE_TEMP);
> +	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> +		     data->socdata->power_down_mask);
> +	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
> +		     data->socdata->measure_temp_mask);
> 
>  	ret = devm_request_threaded_irq(&pdev->dev, data->irq,
>  			imx_thermal_alarm_irq, imx_thermal_alarm_irq_thread, @@
> -661,7 +825,8 @@ static int imx_thermal_remove(struct platform_device
> *pdev)
>  	struct regmap *map = data->tempmon;
> 
>  	/* Disable measurements */
> -	regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_POWER_DOWN);
> +	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
> +		     data->socdata->power_down_mask);
>  	if (!IS_ERR(data->thermal_clk))
>  		clk_disable_unprepare(data->thermal_clk);
> 
> @@ -684,8 +849,10 @@ static int imx_thermal_suspend(struct device *dev)
>  	 * temperature will be read as the thermal sensor is powered
>  	 * down.
>  	 */
> -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_MEASURE_TEMP);
> -	regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_POWER_DOWN);
> +	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> +		     data->socdata->measure_temp_mask);
> +	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
> +		     data->socdata->power_down_mask);
>  	data->mode = THERMAL_DEVICE_DISABLED;
>  	clk_disable_unprepare(data->thermal_clk);
> 
> @@ -702,8 +869,10 @@ static int imx_thermal_resume(struct device *dev)
>  	if (ret)
>  		return ret;
>  	/* Enabled thermal sensor after resume */
> -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_POWER_DOWN);
> -	regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_MEASURE_TEMP);
> +	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> +		     data->socdata->power_down_mask);
> +	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
> +		     data->socdata->measure_temp_mask);
>  	data->mode = THERMAL_DEVICE_ENABLED;
> 
>  	return 0;
> --
> 2.7.4
> 
> 
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Re: [PATCH V6 2/2] thermal: imx: add i.MX7 thermal sensor support

[Zhang Rui]

yeah, will review it and get back to you later.

On 二, 2018-03-13 at 06:13 +0000, Anson Huang wrote:
> Ping...
> 
> @rui.zhang@intel.com, can you help review this patch?
> 
> Anson Huang
> Best Regards!
> 
> 
> > 
> > -----Original Message-----
> > From: linux-arm-kernel [mailto:linux-arm-kernel-bounces@lists.infra
> > dead.org]
> > On Behalf Of Anson Huang
> > Sent: Friday, March 2, 2018 10:00 AM
> > To: Leonard Crestez <leonard.crestez@nxp.com>; rui.zhang@intel.com;
> > edubezval@gmail.com; robh+dt@kernel.org; mark.rutland@arm.com;
> > shawnguo@kernel.org; kernel@pengutronix.de; Fabio Estevam
> > <fabio.estevam@nxp.com>; linux@armlinux.org.uk
> > Cc: linux-arm-kernel@lists.infradead.org; devicetree@vger.kernel.or
> > g;
> > dl-linux-imx <linux-imx@nxp.com>; linux-kernel@vger.kernel.org;
> > linux-pm@vger.kernel.org
> > Subject: [PATCH V6 2/2] thermal: imx: add i.MX7 thermal sensor
> > support
> > 
> > This patch adds i.MX7 thermal sensor support, most of the i.MX7
> > thermal sensor
> > functions are same with
> > i.MX6 except the registers offset/layout, so we move those
> > registers
> > offset/layout definitions to soc data structure.
> > 
> > i.MX7 uses single calibration data @25C, the calibration data is
> > located at
> > OCOTP offset 0x4F0, bit[17:9], the formula is as below:
> > 
> > Tmeas = (Nmeas - n1) + 25; n1 is the fuse value for 25C.
> > 
> > Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
> > Signed-off-by: Bai Ping <ping.bai@nxp.com>
> > Acked-by: Dong Aisheng <aisheng.dong@nxp.com>
> > Acked-by: Shawn Guo <shawnguo@kernel.org>
> > Reviewed-by: Rob Herring <robh@kernel.org>
> > ---
> > changes since V5:
> > 	no code change, just add Reviewed-by.
> >  .../devicetree/bindings/thermal/imx-thermal.txt    |   9 +-
> >  drivers/thermal/imx_thermal.c                      | 295
> > ++++++++++++++++-----
> >  2 files changed, 239 insertions(+), 65 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/thermal/imx-
> > thermal.txt
> > b/Documentation/devicetree/bindings/thermal/imx-thermal.txt
> > index 28be51a..38bffcc 100644
> > --- a/Documentation/devicetree/bindings/thermal/imx-thermal.txt
> > +++ b/Documentation/devicetree/bindings/thermal/imx-thermal.txt
> > @@ -1,8 +1,13 @@
> >  * Temperature Monitor (TEMPMON) on Freescale i.MX SoCs
> > 
> >  Required properties:
> > -- compatible : "fsl,imx6q-tempmon" for i.MX6Q, "fsl,imx6sx-
> > tempmon" for
> > i.MX6SX.
> > -  i.MX6SX has two more IRQs than i.MX6Q, one is IRQ_LOW and the
> > other is
> > IRQ_PANIC,
> > +- compatible : must be one of following:
> > +  - "fsl,imx6q-tempmon" for i.MX6Q,
> > +  - "fsl,imx6sx-tempmon" for i.MX6SX,
> > +  - "fsl,imx7d-tempmon" for i.MX7S/D.
> > +- interrupts : the interrupt output of the controller:
> > +  i.MX6Q has one IRQ which will be triggered when temperature is
> > higher
> > +than high threshold,
> > +  i.MX6SX and i.MX7S/D have two more IRQs than i.MX6Q, one is
> > IRQ_LOW
> > +and the other is IRQ_PANIC,
> >    when temperature is below than low threshold, IRQ_LOW will be
> > triggered,
> > when temperature
> >    is higher than panic threshold, system will auto reboot by SRC
> > module.
> >  - fsl,tempmon : phandle pointer to system controller that contains
> > TEMPMON
> > diff --git a/drivers/thermal/imx_thermal.c
> > b/drivers/thermal/imx_thermal.c
> > index a67781b..569d41b 100644
> > --- a/drivers/thermal/imx_thermal.c
> > +++ b/drivers/thermal/imx_thermal.c
> > @@ -31,35 +31,57 @@
> >  #define REG_CLR		0x8
> >  #define REG_TOG		0xc
> > 
> > -#define MISC0				0x0150
> > -#define MISC0_REFTOP_SELBIASOFF		(1 << 3)
> > -#define MISC1				0x0160
> > -#define MISC1_IRQ_TEMPHIGH		(1 << 29)
> > +/* i.MX6 specific */
> > +#define IMX6_MISC0				0x0150
> > +#define IMX6_MISC0_REFTOP_SELBIASOFF		(1 << 3)
> > +#define IMX6_MISC1				0x0160
> > +#define IMX6_MISC1_IRQ_TEMPHIGH			(1 << 29)
> >  /* Below LOW and PANIC bits are only for TEMPMON_IMX6SX */
> > -#define MISC1_IRQ_TEMPLOW		(1 << 28)
> > -#define MISC1_IRQ_TEMPPANIC		(1 << 27)
> > -
> > -#define TEMPSENSE0			0x0180
> > -#define TEMPSENSE0_ALARM_VALUE_SHIFT	20
> > -#define TEMPSENSE0_ALARM_VALUE_MASK	(0xfff <<
> > TEMPSENSE0_ALARM_VALUE_SHIFT)
> > -#define TEMPSENSE0_TEMP_CNT_SHIFT	8
> > -#define TEMPSENSE0_TEMP_CNT_MASK	(0xfff <<
> > TEMPSENSE0_TEMP_CNT_SHIFT)
> > -#define TEMPSENSE0_FINISHED		(1 << 2)
> > -#define TEMPSENSE0_MEASURE_TEMP		(1 << 1)
> > -#define TEMPSENSE0_POWER_DOWN		(1 << 0)
> > -
> > -#define TEMPSENSE1			0x0190
> > -#define TEMPSENSE1_MEASURE_FREQ		0xffff
> > -/* Below TEMPSENSE2 is only for TEMPMON_IMX6SX */
> > -#define TEMPSENSE2			0x0290
> > -#define TEMPSENSE2_LOW_VALUE_SHIFT	0
> > -#define TEMPSENSE2_LOW_VALUE_MASK	0xfff
> > -#define TEMPSENSE2_PANIC_VALUE_SHIFT	16
> > -#define TEMPSENSE2_PANIC_VALUE_MASK	0xfff0000
> > +#define IMX6_MISC1_IRQ_TEMPLOW			(1 << 28)
> > +#define IMX6_MISC1_IRQ_TEMPPANIC		(1 << 27)
> > +
> > +#define IMX6_TEMPSENSE0				0x0180
> > +#define IMX6_TEMPSENSE0_ALARM_VALUE_SHIFT	20
> > +#define IMX6_TEMPSENSE0_ALARM_VALUE_MASK	(0xfff << 20)
> > +#define IMX6_TEMPSENSE0_TEMP_CNT_SHIFT		8
> > +#define IMX6_TEMPSENSE0_TEMP_CNT_MASK		(0xfff << 8)
> > +#define IMX6_TEMPSENSE0_FINISHED		(1 << 2)
> > +#define IMX6_TEMPSENSE0_MEASURE_TEMP		(1 << 1)
> > +#define IMX6_TEMPSENSE0_POWER_DOWN		(1 << 0)
> > +
> > +#define IMX6_TEMPSENSE1				0x0190
> > +#define IMX6_TEMPSENSE1_MEASURE_FREQ		0xffff
> > +#define IMX6_TEMPSENSE1_MEASURE_FREQ_SHIFT	0
> > 
> >  #define OCOTP_MEM0			0x0480
> >  #define OCOTP_ANA1			0x04e0
> > 
> > +/* Below TEMPSENSE2 is only for TEMPMON_IMX6SX */
> > +#define IMX6_TEMPSENSE2				0x0290
> > +#define IMX6_TEMPSENSE2_LOW_VALUE_SHIFT		0
> > +#define IMX6_TEMPSENSE2_LOW_VALUE_MASK		0xfff
> > +#define IMX6_TEMPSENSE2_PANIC_VALUE_SHIFT	16
> > +#define IMX6_TEMPSENSE2_PANIC_VALUE_MASK	0xfff0000
> > +
> > +/* i.MX7 specific */
> > +#define IMX7_ANADIG_DIGPROG			0x800
> > +#define IMX7_TEMPSENSE0				0x300
> > +#define IMX7_TEMPSENSE0_PANIC_ALARM_SHIFT	18
> > +#define IMX7_TEMPSENSE0_PANIC_ALARM_MASK	(0x1ff << 18)
> > +#define IMX7_TEMPSENSE0_HIGH_ALARM_SHIFT	9
> > +#define IMX7_TEMPSENSE0_HIGH_ALARM_MASK		(0x1ff <<
> > 9)
> > +#define IMX7_TEMPSENSE0_LOW_ALARM_SHIFT		0
> > +#define IMX7_TEMPSENSE0_LOW_ALARM_MASK		0x1ff
> > +
> > +#define IMX7_TEMPSENSE1				0x310
> > +#define IMX7_TEMPSENSE1_MEASURE_FREQ_SHIFT	16
> > +#define IMX7_TEMPSENSE1_MEASURE_FREQ_MASK	(0xffff << 16)
> > +#define IMX7_TEMPSENSE1_FINISHED		(1 << 11)
> > +#define IMX7_TEMPSENSE1_MEASURE_TEMP		(1 << 10)
> > +#define IMX7_TEMPSENSE1_POWER_DOWN		(1 << 9)
> > +#define IMX7_TEMPSENSE1_TEMP_VALUE_SHIFT	0
> > +#define IMX7_TEMPSENSE1_TEMP_VALUE_MASK		0x1ff
> > +
> >  /* The driver supports 1 passive trip point and 1 critical trip
> > point */  enum
> > imx_thermal_trip {
> >  	IMX_TRIP_PASSIVE,
> > @@ -72,17 +94,114 @@ enum imx_thermal_trip {
> > 
> >  #define TEMPMON_IMX6Q			1
> >  #define TEMPMON_IMX6SX			2
> > +#define TEMPMON_IMX7D			3
> > 
> >  struct thermal_soc_data {
> >  	u32 version;
> > +
> > +	u32 sensor_ctrl;
> > +	u32 power_down_mask;
> > +	u32 measure_temp_mask;
> > +
> > +	u32 measure_freq_ctrl;
> > +	u32 measure_freq_mask;
> > +	u32 measure_freq_shift;
> > +
> > +	u32 temp_data;
> > +	u32 temp_value_mask;
> > +	u32 temp_value_shift;
> > +	u32 temp_valid_mask;
> > +
> > +	u32 panic_alarm_ctrl;
> > +	u32 panic_alarm_mask;
> > +	u32 panic_alarm_shift;
> > +
> > +	u32 high_alarm_ctrl;
> > +	u32 high_alarm_mask;
> > +	u32 high_alarm_shift;
> > +
> > +	u32 low_alarm_ctrl;
> > +	u32 low_alarm_mask;
> > +	u32 low_alarm_shift;
> >  };
> > 
> >  static struct thermal_soc_data thermal_imx6q_data = {
> >  	.version = TEMPMON_IMX6Q,
> > +
> > +	.sensor_ctrl = IMX6_TEMPSENSE0,
> > +	.power_down_mask = IMX6_TEMPSENSE0_POWER_DOWN,
> > +	.measure_temp_mask = IMX6_TEMPSENSE0_MEASURE_TEMP,
> > +
> > +	.measure_freq_ctrl = IMX6_TEMPSENSE1,
> > +	.measure_freq_shift = IMX6_TEMPSENSE1_MEASURE_FREQ_SHIFT,
> > +	.measure_freq_mask = IMX6_TEMPSENSE1_MEASURE_FREQ,
> > +
> > +	.temp_data = IMX6_TEMPSENSE0,
> > +	.temp_value_mask = IMX6_TEMPSENSE0_TEMP_CNT_MASK,
> > +	.temp_value_shift = IMX6_TEMPSENSE0_TEMP_CNT_SHIFT,
> > +	.temp_valid_mask = IMX6_TEMPSENSE0_FINISHED,
> > +
> > +	.high_alarm_ctrl = IMX6_TEMPSENSE0,
> > +	.high_alarm_mask = IMX6_TEMPSENSE0_ALARM_VALUE_MASK,
> > +	.high_alarm_shift = IMX6_TEMPSENSE0_ALARM_VALUE_SHIFT,
> >  };
> > 
> >  static struct thermal_soc_data thermal_imx6sx_data = {
> >  	.version = TEMPMON_IMX6SX,
> > +
> > +	.sensor_ctrl = IMX6_TEMPSENSE0,
> > +	.power_down_mask = IMX6_TEMPSENSE0_POWER_DOWN,
> > +	.measure_temp_mask = IMX6_TEMPSENSE0_MEASURE_TEMP,
> > +
> > +	.measure_freq_ctrl = IMX6_TEMPSENSE1,
> > +	.measure_freq_shift = IMX6_TEMPSENSE1_MEASURE_FREQ_SHIFT,
> > +	.measure_freq_mask = IMX6_TEMPSENSE1_MEASURE_FREQ,
> > +
> > +	.temp_data = IMX6_TEMPSENSE0,
> > +	.temp_value_mask = IMX6_TEMPSENSE0_TEMP_CNT_MASK,
> > +	.temp_value_shift = IMX6_TEMPSENSE0_TEMP_CNT_SHIFT,
> > +	.temp_valid_mask = IMX6_TEMPSENSE0_FINISHED,
> > +
> > +	.high_alarm_ctrl = IMX6_TEMPSENSE0,
> > +	.high_alarm_mask = IMX6_TEMPSENSE0_ALARM_VALUE_MASK,
> > +	.high_alarm_shift = IMX6_TEMPSENSE0_ALARM_VALUE_SHIFT,
> > +
> > +	.panic_alarm_ctrl = IMX6_TEMPSENSE2,
> > +	.panic_alarm_mask = IMX6_TEMPSENSE2_PANIC_VALUE_MASK,
> > +	.panic_alarm_shift = IMX6_TEMPSENSE2_PANIC_VALUE_SHIFT,
> > +
> > +	.low_alarm_ctrl = IMX6_TEMPSENSE2,
> > +	.low_alarm_mask = IMX6_TEMPSENSE2_LOW_VALUE_MASK,
> > +	.low_alarm_shift = IMX6_TEMPSENSE2_LOW_VALUE_SHIFT, };
> > +
> > +static struct thermal_soc_data thermal_imx7d_data = {
> > +	.version = TEMPMON_IMX7D,
> > +
> > +	.sensor_ctrl = IMX7_TEMPSENSE1,
> > +	.power_down_mask = IMX7_TEMPSENSE1_POWER_DOWN,
> > +	.measure_temp_mask = IMX7_TEMPSENSE1_MEASURE_TEMP,
> > +
> > +	.measure_freq_ctrl = IMX7_TEMPSENSE1,
> > +	.measure_freq_shift = IMX7_TEMPSENSE1_MEASURE_FREQ_SHIFT,
> > +	.measure_freq_mask = IMX7_TEMPSENSE1_MEASURE_FREQ_MASK,
> > +
> > +	.temp_data = IMX7_TEMPSENSE1,
> > +	.temp_value_mask = IMX7_TEMPSENSE1_TEMP_VALUE_MASK,
> > +	.temp_value_shift = IMX7_TEMPSENSE1_TEMP_VALUE_SHIFT,
> > +	.temp_valid_mask = IMX7_TEMPSENSE1_FINISHED,
> > +
> > +	.panic_alarm_ctrl = IMX7_TEMPSENSE1,
> > +	.panic_alarm_mask = IMX7_TEMPSENSE0_PANIC_ALARM_MASK,
> > +	.panic_alarm_shift = IMX7_TEMPSENSE0_PANIC_ALARM_SHIFT,
> > +
> > +	.high_alarm_ctrl = IMX7_TEMPSENSE0,
> > +	.high_alarm_mask = IMX7_TEMPSENSE0_HIGH_ALARM_MASK,
> > +	.high_alarm_shift = IMX7_TEMPSENSE0_HIGH_ALARM_SHIFT,
> > +
> > +	.low_alarm_ctrl = IMX7_TEMPSENSE0,
> > +	.low_alarm_mask = IMX7_TEMPSENSE0_LOW_ALARM_MASK,
> > +	.low_alarm_shift = IMX7_TEMPSENSE0_LOW_ALARM_SHIFT,
> >  };
> > 
> >  struct imx_thermal_data {
> > @@ -107,31 +226,42 @@ struct imx_thermal_data {  static void
> > imx_set_panic_temp(struct imx_thermal_data *data,
> >  			       int panic_temp)
> >  {
> > +	const struct thermal_soc_data *soc_data = data->socdata;
> >  	struct regmap *map = data->tempmon;
> >  	int critical_value;
> > 
> >  	critical_value = (data->c2 - panic_temp) / data->c1;
> > -	regmap_write(map, TEMPSENSE2 + REG_CLR,
> > TEMPSENSE2_PANIC_VALUE_MASK);
> > -	regmap_write(map, TEMPSENSE2 + REG_SET, critical_value <<
> > -			TEMPSENSE2_PANIC_VALUE_SHIFT);
> > +
> > +	regmap_write(map, soc_data->panic_alarm_ctrl + REG_CLR,
> > +		     soc_data->panic_alarm_mask);
> > +	regmap_write(map, soc_data->panic_alarm_ctrl + REG_SET,
> > +		     critical_value << soc_data-
> > >panic_alarm_shift);
> >  }
> > 
> >  static void imx_set_alarm_temp(struct imx_thermal_data *data,
> >  			       int alarm_temp)
> >  {
> >  	struct regmap *map = data->tempmon;
> > +	const struct thermal_soc_data *soc_data = data->socdata;
> >  	int alarm_value;
> > 
> >  	data->alarm_temp = alarm_temp;
> > -	alarm_value = (data->c2 - alarm_temp) / data->c1;
> > -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> > TEMPSENSE0_ALARM_VALUE_MASK);
> > -	regmap_write(map, TEMPSENSE0 + REG_SET, alarm_value <<
> > -			TEMPSENSE0_ALARM_VALUE_SHIFT);
> > +
> > +	if (data->socdata->version == TEMPMON_IMX7D)
> > +		alarm_value = alarm_temp / 1000 + data->c1 - 25;
> > +	else
> > +		alarm_value = (data->c2 - alarm_temp) / data->c1;
> > +
> > +	regmap_write(map, soc_data->high_alarm_ctrl + REG_CLR,
> > +		     soc_data->high_alarm_mask);
> > +	regmap_write(map, soc_data->high_alarm_ctrl + REG_SET,
> > +		     alarm_value << soc_data->high_alarm_shift);
> >  }
> > 
> >  static int imx_get_temp(struct thermal_zone_device *tz, int
> > *temp)  {
> >  	struct imx_thermal_data *data = tz->devdata;
> > +	const struct thermal_soc_data *soc_data = data->socdata;
> >  	struct regmap *map = data->tempmon;
> >  	unsigned int n_meas;
> >  	bool wait;
> > @@ -139,16 +269,18 @@ static int imx_get_temp(struct
> > thermal_zone_device
> > *tz, int *temp)
> > 
> >  	if (data->mode == THERMAL_DEVICE_ENABLED) {
> >  		/* Check if a measurement is currently in progress
> > */
> > -		regmap_read(map, TEMPSENSE0, &val);
> > -		wait = !(val & TEMPSENSE0_FINISHED);
> > +		regmap_read(map, soc_data->temp_data, &val);
> > +		wait = !(val & soc_data->temp_valid_mask);
> >  	} else {
> >  		/*
> >  		 * Every time we measure the temperature, we will
> > power on the
> >  		 * temperature sensor, enable measurements, take a
> > reading,
> >  		 * disable measurements, power off the temperature
> > sensor.
> >  		 */
> > -		regmap_write(map, TEMPSENSE0 + REG_CLR,
> > TEMPSENSE0_POWER_DOWN);
> > -		regmap_write(map, TEMPSENSE0 + REG_SET,
> > TEMPSENSE0_MEASURE_TEMP);
> > +		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
> > +			    soc_data->power_down_mask);
> > +		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
> > +			    soc_data->measure_temp_mask);
> > 
> >  		wait = true;
> >  	}
> > @@ -160,22 +292,28 @@ static int imx_get_temp(struct
> > thermal_zone_device
> > *tz, int *temp)
> >  	if (wait)
> >  		usleep_range(20, 50);
> > 
> > -	regmap_read(map, TEMPSENSE0, &val);
> > +	regmap_read(map, soc_data->temp_data, &val);
> > 
> >  	if (data->mode != THERMAL_DEVICE_ENABLED) {
> > -		regmap_write(map, TEMPSENSE0 + REG_CLR,
> > TEMPSENSE0_MEASURE_TEMP);
> > -		regmap_write(map, TEMPSENSE0 + REG_SET,
> > TEMPSENSE0_POWER_DOWN);
> > +		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
> > +			     soc_data->measure_temp_mask);
> > +		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
> > +			     soc_data->power_down_mask);
> >  	}
> > 
> > -	if ((val & TEMPSENSE0_FINISHED) == 0) {
> > +	if ((val & soc_data->temp_valid_mask) == 0) {
> >  		dev_dbg(&tz->device, "temp measurement never
> > finished\n");
> >  		return -EAGAIN;
> >  	}
> > 
> > -	n_meas = (val & TEMPSENSE0_TEMP_CNT_MASK) >>
> > TEMPSENSE0_TEMP_CNT_SHIFT;
> > +	n_meas = (val & soc_data->temp_value_mask)
> > +		>> soc_data->temp_value_shift;
> > 
> >  	/* See imx_init_calib() for formula derivation */
> > -	*temp = data->c2 - n_meas * data->c1;
> > +	if (data->socdata->version == TEMPMON_IMX7D)
> > +		*temp = (n_meas - data->c1 + 25) * 1000;
> > +	else
> > +		*temp = data->c2 - n_meas * data->c1;
> > 
> >  	/* Update alarm value to next higher trip point for
> > TEMPMON_IMX6Q */
> >  	if (data->socdata->version == TEMPMON_IMX6Q) { @@ -219,21
> > +357,26
> > @@ static int imx_set_mode(struct thermal_zone_device *tz,  {
> >  	struct imx_thermal_data *data = tz->devdata;
> >  	struct regmap *map = data->tempmon;
> > +	const struct thermal_soc_data *soc_data = data->socdata;
> > 
> >  	if (mode == THERMAL_DEVICE_ENABLED) {
> >  		tz->polling_delay = IMX_POLLING_DELAY;
> >  		tz->passive_delay = IMX_PASSIVE_DELAY;
> > 
> > -		regmap_write(map, TEMPSENSE0 + REG_CLR,
> > TEMPSENSE0_POWER_DOWN);
> > -		regmap_write(map, TEMPSENSE0 + REG_SET,
> > TEMPSENSE0_MEASURE_TEMP);
> > +		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
> > +			     soc_data->power_down_mask);
> > +		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
> > +			     soc_data->measure_temp_mask);
> > 
> >  		if (!data->irq_enabled) {
> >  			data->irq_enabled = true;
> >  			enable_irq(data->irq);
> >  		}
> >  	} else {
> > -		regmap_write(map, TEMPSENSE0 + REG_CLR,
> > TEMPSENSE0_MEASURE_TEMP);
> > -		regmap_write(map, TEMPSENSE0 + REG_SET,
> > TEMPSENSE0_POWER_DOWN);
> > +		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
> > +			     soc_data->measure_temp_mask);
> > +		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
> > +			     soc_data->power_down_mask);
> > 
> >  		tz->polling_delay = 0;
> >  		tz->passive_delay = 0;
> > @@ -355,6 +498,15 @@ static int imx_init_calib(struct
> > platform_device *pdev,
> > u32 ocotp_ana1)
> >  	}
> > 
> >  	/*
> > +	 * On i.MX7D, we only use the calibration data at 25C to
> > get the temp,
> > +	 * Tmeas = ( Nmeas - n1) + 25; n1 is the fuse value for
> > 25C.
> > +	 */
> > +	if (data->socdata->version == TEMPMON_IMX7D) {
> > +		data->c1 = (ocotp_ana1 >> 9) & 0x1ff;
> > +		return 0;
> > +	}
> > +
> > +	/*
> >  	 * The sensor is calibrated at 25 °C (aka T1) and the
> > value measured
> >  	 * (aka N1) at this temperature is provided in bits
> > [31:20] in the
> >  	 * i.MX's OCOTP value ANA1.
> > @@ -492,6 +644,7 @@ static irqreturn_t
> > imx_thermal_alarm_irq_thread(int
> > irq, void *dev)  static const struct of_device_id
> > of_imx_thermal_match[] = {
> >  	{ .compatible = "fsl,imx6q-tempmon", .data =
> > &thermal_imx6q_data, },
> >  	{ .compatible = "fsl,imx6sx-tempmon", .data =
> > &thermal_imx6sx_data, },
> > +	{ .compatible = "fsl,imx7d-tempmon", .data =
> > &thermal_imx7d_data, },
> >  	{ /* end */ }
> >  };
> >  MODULE_DEVICE_TABLE(of, of_imx_thermal_match); @@ -523,14 +676,15
> > @@ static int imx_thermal_probe(struct platform_device *pdev)
> > 
> >  	/* make sure the IRQ flag is clear before enabling irq on
> > i.MX6SX */
> >  	if (data->socdata->version == TEMPMON_IMX6SX) {
> > -		regmap_write(map, MISC1 + REG_CLR,
> > MISC1_IRQ_TEMPHIGH |
> > -			MISC1_IRQ_TEMPLOW | MISC1_IRQ_TEMPPANIC);
> > +		regmap_write(map, IMX6_MISC1 + REG_CLR,
> > +			IMX6_MISC1_IRQ_TEMPHIGH |
> > IMX6_MISC1_IRQ_TEMPLOW
> > +			| IMX6_MISC1_IRQ_TEMPPANIC);
> >  		/*
> >  		 * reset value of LOW ALARM is incorrect, set it
> > to lowest
> >  		 * value to avoid false trigger of low alarm.
> >  		 */
> > -		regmap_write(map, TEMPSENSE2 + REG_SET,
> > -			TEMPSENSE2_LOW_VALUE_MASK);
> > +		regmap_write(map, data->socdata->low_alarm_ctrl +
> > REG_SET,
> > +			     data->socdata->low_alarm_mask);
> >  	}
> > 
> >  	data->irq = platform_get_irq(pdev, 0); @@ -557,11 +711,17
> > @@ static int
> > imx_thermal_probe(struct platform_device *pdev)
> >  	}
> > 
> >  	/* Make sure sensor is in known good state for
> > measurements */
> > -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> > TEMPSENSE0_POWER_DOWN);
> > -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> > TEMPSENSE0_MEASURE_TEMP);
> > -	regmap_write(map, TEMPSENSE1 + REG_CLR,
> > TEMPSENSE1_MEASURE_FREQ);
> > -	regmap_write(map, MISC0 + REG_SET,
> > MISC0_REFTOP_SELBIASOFF);
> > -	regmap_write(map, TEMPSENSE0 + REG_SET,
> > TEMPSENSE0_POWER_DOWN);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> > +		     data->socdata->power_down_mask);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> > +		     data->socdata->measure_temp_mask);
> > +	regmap_write(map, data->socdata->measure_freq_ctrl +
> > REG_CLR,
> > +		     data->socdata->measure_freq_mask);
> > +	if (data->socdata->version != TEMPMON_IMX7D)
> > +		regmap_write(map, IMX6_MISC0 + REG_SET,
> > +			IMX6_MISC0_REFTOP_SELBIASOFF);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
> > +		     data->socdata->power_down_mask);
> > 
> >  	data->policy = cpufreq_cpu_get(0);
> >  	if (!data->policy) {
> > @@ -626,16 +786,20 @@ static int imx_thermal_probe(struct
> > platform_device
> > *pdev)
> >  		 data->temp_passive / 1000);
> > 
> >  	/* Enable measurements at ~ 10 Hz */
> > -	regmap_write(map, TEMPSENSE1 + REG_CLR,
> > TEMPSENSE1_MEASURE_FREQ);
> > +	regmap_write(map, data->socdata->measure_freq_ctrl +
> > REG_CLR,
> > +		     data->socdata->measure_freq_mask);
> >  	measure_freq = DIV_ROUND_UP(32768, 10); /* 10 Hz */
> > -	regmap_write(map, TEMPSENSE1 + REG_SET, measure_freq);
> > +	regmap_write(map, data->socdata->measure_freq_ctrl +
> > REG_SET,
> > +		     measure_freq << data->socdata-
> > >measure_freq_shift);
> >  	imx_set_alarm_temp(data, data->temp_passive);
> > 
> >  	if (data->socdata->version == TEMPMON_IMX6SX)
> >  		imx_set_panic_temp(data, data->temp_critical);
> > 
> > -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> > TEMPSENSE0_POWER_DOWN);
> > -	regmap_write(map, TEMPSENSE0 + REG_SET,
> > TEMPSENSE0_MEASURE_TEMP);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> > +		     data->socdata->power_down_mask);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
> > +		     data->socdata->measure_temp_mask);
> > 
> >  	ret = devm_request_threaded_irq(&pdev->dev, data->irq,
> >  			imx_thermal_alarm_irq,
> > imx_thermal_alarm_irq_thread, @@
> > -661,7 +825,8 @@ static int imx_thermal_remove(struct
> > platform_device
> > *pdev)
> >  	struct regmap *map = data->tempmon;
> > 
> >  	/* Disable measurements */
> > -	regmap_write(map, TEMPSENSE0 + REG_SET,
> > TEMPSENSE0_POWER_DOWN);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
> > +		     data->socdata->power_down_mask);
> >  	if (!IS_ERR(data->thermal_clk))
> >  		clk_disable_unprepare(data->thermal_clk);
> > 
> > @@ -684,8 +849,10 @@ static int imx_thermal_suspend(struct device
> > *dev)
> >  	 * temperature will be read as the thermal sensor is
> > powered
> >  	 * down.
> >  	 */
> > -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> > TEMPSENSE0_MEASURE_TEMP);
> > -	regmap_write(map, TEMPSENSE0 + REG_SET,
> > TEMPSENSE0_POWER_DOWN);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> > +		     data->socdata->measure_temp_mask);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
> > +		     data->socdata->power_down_mask);
> >  	data->mode = THERMAL_DEVICE_DISABLED;
> >  	clk_disable_unprepare(data->thermal_clk);
> > 
> > @@ -702,8 +869,10 @@ static int imx_thermal_resume(struct device
> > *dev)
> >  	if (ret)
> >  		return ret;
> >  	/* Enabled thermal sensor after resume */
> > -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> > TEMPSENSE0_POWER_DOWN);
> > -	regmap_write(map, TEMPSENSE0 + REG_SET,
> > TEMPSENSE0_MEASURE_TEMP);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> > +		     data->socdata->power_down_mask);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
> > +		     data->socdata->measure_temp_mask);
> >  	data->mode = THERMAL_DEVICE_ENABLED;
> > 
> >  	return 0;
> > --
> > 2.7.4
> > 
> > 
> > _______________________________________________
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> > linux-arm-kernel@lists.infradead.org
> > https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fl
> > ists.infr
> > adead.org%2Fmailman%2Flistinfo%2Flinux-arm-
> > kernel&data=02%7C01%7Cans
> > on.huang%40nxp.com%7C06aac542a9cb445ee0f308d57fe1cbba%7C686ea1d3
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Re: [PATCH V6 2/2] thermal: imx: add i.MX7 thermal sensor support

[Eduardo Valentin]

On Tue, Mar 13, 2018 at 02:51:05PM +0800, Zhang Rui wrote:
> yeah, will review it and get back to you later.

This is in my tree now.

Re: [PATCH V6 2/2] thermal: imx: add i.MX7 thermal sensor support

[Shawn Guo]

Hi Eduardo,

On Wed, Mar 14, 2018 at 05:51:42PM -0700, Eduardo Valentin wrote:
> On Tue, Mar 13, 2018 at 02:51:05PM +0800, Zhang Rui wrote:
> > yeah, will review it and get back to you later.
> 
> This is in my tree now.

It seems that the patch did not make its way to 4.17-rc1?

Shawn