[PATCH 0/8 v5] enable to use thermal-zone on r8a7790/1

[PATCH 0/8 v5] enable to use thermal-zone on r8a7790/1

[Kuninori Morimoto]

Hi

These are v5 of thermal-zone support for r8a7790/r8a7791.

Kuninori Morimoto (8):
      1) thermal: rcar: move rcar_thermal_dt_ids to upside
      2) thermal: rcar: check every rcar_thermal_update_temp() return value
      3) thermal: rcar: check irq possibility in rcar_thermal_irq_xxx()
      4) thermal: rcar: rcar_thermal_get_temp() return error if strange temp
      5) thermal: rcar: enable to use thermal-zone on DT
      6) ARM: shmobile: r8a7790: enable to use thermal-zone
      7) ARM: shmobile: r8a7791: enable to use thermal-zone
      8) thermal: of-thermal: of_thermal_set_trip_temp() call thermal_zone_device_update()

 Documentation/devicetree/bindings/thermal/rcar-thermal.txt | 37 +++++++++++++++++++++++++++++++++++--
 arch/arm/boot/dts/r8a7790.dtsi                             | 26 ++++++++++++++++++++++++--
 arch/arm/boot/dts/r8a7791.dtsi                             | 26 ++++++++++++++++++++++++--
 drivers/thermal/of-thermal.c                               |  2 ++
 drivers/thermal/rcar_thermal.c                             | 96 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---------------------
 5 files changed, 160 insertions(+), 27 deletions(-)

Best regards
---
Kuninori Morimoto
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[PATCH 1/8 v5] thermal: rcar: move rcar_thermal_dt_ids to upside

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

This patch is prepare for of-thermal support.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
v4 -> v5

 - no change

 drivers/thermal/rcar_thermal.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index 5d4ae7d..ac8d1eb 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c
@@ -81,6 +81,12 @@ struct rcar_thermal_priv {
 # define rcar_force_update_temp(priv)	0
 #endif
 
+static const struct of_device_id rcar_thermal_dt_ids[] = {
+	{ .compatible = "renesas,rcar-thermal", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, rcar_thermal_dt_ids);
+
 /*
  *		basic functions
  */
@@ -491,12 +497,6 @@ static int rcar_thermal_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static const struct of_device_id rcar_thermal_dt_ids[] = {
-	{ .compatible = "renesas,rcar-thermal", },
-	{},
-};
-MODULE_DEVICE_TABLE(of, rcar_thermal_dt_ids);
-
 static struct platform_driver rcar_thermal_driver = {
 	.driver	= {
 		.name	= "rcar_thermal",
-- 
1.9.1

[PATCH 2/8 v5] thermal: rcar: check every rcar_thermal_update_temp() return value

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Every rcar_thermal_update_temp() return value will be checked.

And also, rcar_thermal_get_temp() always call
rcar_thermal_update_temp() by this patch.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
v4 -> v5

 - rcar_thermal_get_temp() calls rcar_thermal_update_temp()
   without checking rcar_has_irq_support()

 drivers/thermal/rcar_thermal.c | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index ac8d1eb..0b19743 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c
@@ -75,12 +75,6 @@ struct rcar_thermal_priv {
 #define rcar_has_irq_support(priv)	((priv)->common->base)
 #define rcar_id_to_shift(priv)		((priv)->id * 8)
 
-#ifdef DEBUG
-# define rcar_force_update_temp(priv)	1
-#else
-# define rcar_force_update_temp(priv)	0
-#endif
-
 static const struct of_device_id rcar_thermal_dt_ids[] = {
 	{ .compatible = "renesas,rcar-thermal", },
 	{},
@@ -209,9 +203,11 @@ err_out_unlock:
 static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
 {
 	struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
+	int ret;
 
-	if (!rcar_has_irq_support(priv) || rcar_force_update_temp(priv))
-		rcar_thermal_update_temp(priv);
+	ret = rcar_thermal_update_temp(priv);
+	if (ret < 0)
+		return ret;
 
 	mutex_lock(&priv->lock);
 	*temp =  MCELSIUS((priv->ctemp * 5) - 65);
@@ -305,11 +301,15 @@ static void rcar_thermal_work(struct work_struct *work)
 {
 	struct rcar_thermal_priv *priv;
 	int cctemp, nctemp;
+	int ret;
 
 	priv = container_of(work, struct rcar_thermal_priv, work.work);
 
 	rcar_thermal_get_temp(priv->zone, &cctemp);
-	rcar_thermal_update_temp(priv);
+	ret = rcar_thermal_update_temp(priv);
+	if (ret < 0)
+		return;
+
 	rcar_thermal_irq_enable(priv);
 
 	rcar_thermal_get_temp(priv->zone, &nctemp);
@@ -427,7 +427,9 @@ static int rcar_thermal_probe(struct platform_device *pdev)
 		mutex_init(&priv->lock);
 		INIT_LIST_HEAD(&priv->list);
 		INIT_DELAYED_WORK(&priv->work, rcar_thermal_work);
-		rcar_thermal_update_temp(priv);
+		ret = rcar_thermal_update_temp(priv);
+		if (ret < 0)
+			goto error_unregister;
 
 		priv->zone = thermal_zone_device_register("rcar_thermal",
 						1, 0, priv,
-- 
1.9.1

[PATCH 3/8 v5] thermal: rcar: check irq possibility in rcar_thermal_irq_xxx()

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Current rcar thermal driver sometimes checks irq possibility when it
calls rcar_thermal_irq_enable/disable(), but sometimes not.
This patch checks it inside rcar_thermal_irq_enable/disable().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
v4 -> v5

 - no change

 drivers/thermal/rcar_thermal.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index 0b19743..e9e4e39 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c
@@ -290,6 +290,9 @@ static void _rcar_thermal_irq_ctrl(struct rcar_thermal_priv *priv, int enable)
 	unsigned long flags;
 	u32 mask = 0x3 << rcar_id_to_shift(priv); /* enable Rising/Falling */
 
+	if (!rcar_has_irq_support(priv))
+		return;
+
 	spin_lock_irqsave(&common->lock, flags);
 
 	rcar_thermal_common_bset(common, INTMSK, mask, enable ? 0 : mask);
@@ -441,8 +444,7 @@ static int rcar_thermal_probe(struct platform_device *pdev)
 			goto error_unregister;
 		}
 
-		if (rcar_has_irq_support(priv))
-			rcar_thermal_irq_enable(priv);
+		rcar_thermal_irq_enable(priv);
 
 		list_move_tail(&priv->list, &common->head);
 
@@ -488,8 +490,7 @@ static int rcar_thermal_remove(struct platform_device *pdev)
 	struct rcar_thermal_priv *priv;
 
 	rcar_thermal_for_each_priv(priv, common) {
-		if (rcar_has_irq_support(priv))
-			rcar_thermal_irq_disable(priv);
+		rcar_thermal_irq_disable(priv);
 		thermal_zone_device_unregister(priv->zone);
 	}
 
-- 
1.9.1

[PATCH 4/8 v5] thermal: rcar: rcar_thermal_get_temp() return error if strange temp

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
v4 -> v5

 - rcar_thermal_update_temp() has no change
 - "retern" -> "return" on Subject

 drivers/thermal/rcar_thermal.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index e9e4e39..30602f2 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c
@@ -203,6 +203,7 @@ err_out_unlock:
 static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
 {
 	struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
+	int tmp;
 	int ret;
 
 	ret = rcar_thermal_update_temp(priv);
@@ -210,9 +211,18 @@ static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
 		return ret;
 
 	mutex_lock(&priv->lock);
-	*temp =  MCELSIUS((priv->ctemp * 5) - 65);
+	tmp =  MCELSIUS((priv->ctemp * 5) - 65);
 	mutex_unlock(&priv->lock);
 
+	if ((tmp < MCELSIUS(-45)) || (tmp > MCELSIUS(125))) {
+		struct device *dev = rcar_priv_to_dev(priv);
+
+		dev_err(dev, "it couldn't measure temperature correctly\n");
+		return -EIO;
+	}
+
+	*temp = tmp;
+
 	return 0;
 }
 
-- 
1.9.1

[PATCH 5/8 v5] thermal: rcar: enable to use thermal-zone on DT

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

This patch enables to use thermal-zone on DT if it was call as
"renesas,rcar-thermal-gen2".
Previous style is still supported by "renesas,rcar-thermal".

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
v4 -> v5

 - "1150000" -> "115000" on rcar-thermal.txt


 .../devicetree/bindings/thermal/rcar-thermal.txt   | 37 +++++++++++++++++-
 drivers/thermal/rcar_thermal.c                     | 45 +++++++++++++++++++---
 2 files changed, 75 insertions(+), 7 deletions(-)

diff --git a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt
index 332e625..e5ee3f1 100644
--- a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt
+++ b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt
@@ -1,8 +1,9 @@
 * Renesas R-Car Thermal
 
 Required properties:
-- compatible		: "renesas,thermal-<soctype>", "renesas,rcar-thermal"
-			  as fallback.
+- compatible		: "renesas,thermal-<soctype>",
+			   "renesas,rcar-gen2-thermal" (with thermal-zone) or
+			   "renesas,rcar-thermal" (without thermal-zone) as fallback.
 			  Examples with soctypes are:
 			    - "renesas,thermal-r8a73a4" (R-Mobile APE6)
 			    - "renesas,thermal-r8a7779" (R-Car H1)
@@ -36,3 +37,35 @@ thermal@e61f0000 {
 		0xe61f0300 0x38>;
 	interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
 };
+
+Example (with thermal-zone):
+
+thermal-zones {
+	cpu_thermal: cpu-thermal {
+		polling-delay-passive	= <1000>;
+		polling-delay		= <5000>;
+
+		thermal-sensors = <&thermal>;
+
+		trips {
+			cpu-crit {
+				temperature	= <115000>;
+				hysteresis	= <0>;
+				type		= "critical";
+			};
+		};
+		cooling-maps {
+		};
+	};
+};
+
+thermal: thermal@e61f0000 {
+	compatible =	"renesas,thermal-r8a7790",
+			"renesas,rcar-gen2-thermal",
+			"renesas,rcar-thermal";
+	reg = <0 0xe61f0000 0 0x14>, <0 0xe61f0100 0 0x38>;
+	interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
+	clocks = <&mstp5_clks R8A7790_CLK_THERMAL>;
+	power-domains = <&cpg_clocks>;
+	#thermal-sensor-cells = <0>;
+};
diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index 30602f2..e92f29b 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c
@@ -23,6 +23,7 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/module.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/reboot.h>
@@ -75,8 +76,10 @@ struct rcar_thermal_priv {
 #define rcar_has_irq_support(priv)	((priv)->common->base)
 #define rcar_id_to_shift(priv)		((priv)->id * 8)
 
+#define USE_OF_THERMAL	1
 static const struct of_device_id rcar_thermal_dt_ids[] = {
 	{ .compatible = "renesas,rcar-thermal", },
+	{ .compatible = "renesas,rcar-gen2-thermal", .data = (void *)USE_OF_THERMAL },
 	{},
 };
 MODULE_DEVICE_TABLE(of, rcar_thermal_dt_ids);
@@ -200,9 +203,9 @@ err_out_unlock:
 	return ret;
 }
 
-static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
+static int rcar_thermal_get_current_temp(struct rcar_thermal_priv *priv,
+					 int *temp)
 {
-	struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
 	int tmp;
 	int ret;
 
@@ -226,6 +229,20 @@ static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
 	return 0;
 }
 
+static int rcar_thermal_of_get_temp(void *data, int *temp)
+{
+	struct rcar_thermal_priv *priv = data;
+
+	return rcar_thermal_get_current_temp(priv, temp);
+}
+
+static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
+{
+	struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
+
+	return rcar_thermal_get_current_temp(priv, temp);
+}
+
 static int rcar_thermal_get_trip_type(struct thermal_zone_device *zone,
 				      int trip, enum thermal_trip_type *type)
 {
@@ -282,6 +299,10 @@ static int rcar_thermal_notify(struct thermal_zone_device *zone,
 	return 0;
 }
 
+static const struct thermal_zone_of_device_ops rcar_thermal_zone_of_ops = {
+	.get_temp	= rcar_thermal_of_get_temp,
+};
+
 static struct thermal_zone_device_ops rcar_thermal_zone_ops = {
 	.get_temp	= rcar_thermal_get_temp,
 	.get_trip_type	= rcar_thermal_get_trip_type,
@@ -318,14 +339,20 @@ static void rcar_thermal_work(struct work_struct *work)
 
 	priv = container_of(work, struct rcar_thermal_priv, work.work);
 
-	rcar_thermal_get_temp(priv->zone, &cctemp);
+	ret = rcar_thermal_get_current_temp(priv, &cctemp);
+	if (ret < 0)
+		return;
+
 	ret = rcar_thermal_update_temp(priv);
 	if (ret < 0)
 		return;
 
 	rcar_thermal_irq_enable(priv);
 
-	rcar_thermal_get_temp(priv->zone, &nctemp);
+	ret = rcar_thermal_get_current_temp(priv, &nctemp);
+	if (ret < 0)
+		return;
+
 	if (nctemp != cctemp)
 		thermal_zone_device_update(priv->zone);
 }
@@ -386,6 +413,8 @@ static int rcar_thermal_probe(struct platform_device *pdev)
 	struct rcar_thermal_priv *priv;
 	struct device *dev = &pdev->dev;
 	struct resource *res, *irq;
+	const struct of_device_id *of_id = of_match_device(rcar_thermal_dt_ids, dev);
+	unsigned long of_data = (unsigned long)of_id->data;
 	int mres = 0;
 	int i;
 	int ret = -ENODEV;
@@ -444,7 +473,13 @@ static int rcar_thermal_probe(struct platform_device *pdev)
 		if (ret < 0)
 			goto error_unregister;
 
-		priv->zone = thermal_zone_device_register("rcar_thermal",
+		if (of_data = USE_OF_THERMAL)
+			priv->zone = thermal_zone_of_sensor_register(
+						dev, i, priv,
+						&rcar_thermal_zone_of_ops);
+		else
+			priv->zone = thermal_zone_device_register(
+						"rcar_thermal",
 						1, 0, priv,
 						&rcar_thermal_zone_ops, NULL, 0,
 						idle);
-- 
1.9.1

Re: [PATCH 5/8 v5] thermal: rcar: enable to use thermal-zone on DT

[Eduardo Valentin]

On Tue, Dec 15, 2015 at 01:18:39AM +0000, Kuninori Morimoto wrote:
> 
> From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> 
> This patch enables to use thermal-zone on DT if it was call as
> "renesas,rcar-thermal-gen2".
> Previous style is still supported by "renesas,rcar-thermal".

Could you please include also an explanation why you need to keep the
support of 'previous style'?

BR,

Eduardo 

[PATCH 5/8 v6] thermal: rcar: enable to use thermal-zone on DT

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

This patch enables to use thermal-zone on DT if it was calles as
"renesas,rcar-thermal-gen2".
Previous style (= non thermal-zone) is still supported by
"renesas,rcar-thermal" to keep compatibility for "git bisect".

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
v5 -> v6

 - "was call" -> "was called"
 - add reason why it keeps previous style

 .../devicetree/bindings/thermal/rcar-thermal.txt   | 37 +++++++++++++++++-
 drivers/thermal/rcar_thermal.c                     | 45 +++++++++++++++++++---
 2 files changed, 75 insertions(+), 7 deletions(-)

diff --git a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt
index 332e625..e5ee3f1 100644
--- a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt
+++ b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt
@@ -1,8 +1,9 @@
 * Renesas R-Car Thermal
 
 Required properties:
-- compatible		: "renesas,thermal-<soctype>", "renesas,rcar-thermal"
-			  as fallback.
+- compatible		: "renesas,thermal-<soctype>",
+			   "renesas,rcar-gen2-thermal" (with thermal-zone) or
+			   "renesas,rcar-thermal" (without thermal-zone) as fallback.
 			  Examples with soctypes are:
 			    - "renesas,thermal-r8a73a4" (R-Mobile APE6)
 			    - "renesas,thermal-r8a7779" (R-Car H1)
@@ -36,3 +37,35 @@ thermal@e61f0000 {
 		0xe61f0300 0x38>;
 	interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
 };
+
+Example (with thermal-zone):
+
+thermal-zones {
+	cpu_thermal: cpu-thermal {
+		polling-delay-passive	= <1000>;
+		polling-delay		= <5000>;
+
+		thermal-sensors = <&thermal>;
+
+		trips {
+			cpu-crit {
+				temperature	= <115000>;
+				hysteresis	= <0>;
+				type		= "critical";
+			};
+		};
+		cooling-maps {
+		};
+	};
+};
+
+thermal: thermal@e61f0000 {
+	compatible =	"renesas,thermal-r8a7790",
+			"renesas,rcar-gen2-thermal",
+			"renesas,rcar-thermal";
+	reg = <0 0xe61f0000 0 0x14>, <0 0xe61f0100 0 0x38>;
+	interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
+	clocks = <&mstp5_clks R8A7790_CLK_THERMAL>;
+	power-domains = <&cpg_clocks>;
+	#thermal-sensor-cells = <0>;
+};
diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index 30602f2..e92f29b 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c
@@ -23,6 +23,7 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/module.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/reboot.h>
@@ -75,8 +76,10 @@ struct rcar_thermal_priv {
 #define rcar_has_irq_support(priv)	((priv)->common->base)
 #define rcar_id_to_shift(priv)		((priv)->id * 8)
 
+#define USE_OF_THERMAL	1
 static const struct of_device_id rcar_thermal_dt_ids[] = {
 	{ .compatible = "renesas,rcar-thermal", },
+	{ .compatible = "renesas,rcar-gen2-thermal", .data = (void *)USE_OF_THERMAL },
 	{},
 };
 MODULE_DEVICE_TABLE(of, rcar_thermal_dt_ids);
@@ -200,9 +203,9 @@ err_out_unlock:
 	return ret;
 }
 
-static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
+static int rcar_thermal_get_current_temp(struct rcar_thermal_priv *priv,
+					 int *temp)
 {
-	struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
 	int tmp;
 	int ret;
 
@@ -226,6 +229,20 @@ static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
 	return 0;
 }
 
+static int rcar_thermal_of_get_temp(void *data, int *temp)
+{
+	struct rcar_thermal_priv *priv = data;
+
+	return rcar_thermal_get_current_temp(priv, temp);
+}
+
+static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
+{
+	struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
+
+	return rcar_thermal_get_current_temp(priv, temp);
+}
+
 static int rcar_thermal_get_trip_type(struct thermal_zone_device *zone,
 				      int trip, enum thermal_trip_type *type)
 {
@@ -282,6 +299,10 @@ static int rcar_thermal_notify(struct thermal_zone_device *zone,
 	return 0;
 }
 
+static const struct thermal_zone_of_device_ops rcar_thermal_zone_of_ops = {
+	.get_temp	= rcar_thermal_of_get_temp,
+};
+
 static struct thermal_zone_device_ops rcar_thermal_zone_ops = {
 	.get_temp	= rcar_thermal_get_temp,
 	.get_trip_type	= rcar_thermal_get_trip_type,
@@ -318,14 +339,20 @@ static void rcar_thermal_work(struct work_struct *work)
 
 	priv = container_of(work, struct rcar_thermal_priv, work.work);
 
-	rcar_thermal_get_temp(priv->zone, &cctemp);
+	ret = rcar_thermal_get_current_temp(priv, &cctemp);
+	if (ret < 0)
+		return;
+
 	ret = rcar_thermal_update_temp(priv);
 	if (ret < 0)
 		return;
 
 	rcar_thermal_irq_enable(priv);
 
-	rcar_thermal_get_temp(priv->zone, &nctemp);
+	ret = rcar_thermal_get_current_temp(priv, &nctemp);
+	if (ret < 0)
+		return;
+
 	if (nctemp != cctemp)
 		thermal_zone_device_update(priv->zone);
 }
@@ -386,6 +413,8 @@ static int rcar_thermal_probe(struct platform_device *pdev)
 	struct rcar_thermal_priv *priv;
 	struct device *dev = &pdev->dev;
 	struct resource *res, *irq;
+	const struct of_device_id *of_id = of_match_device(rcar_thermal_dt_ids, dev);
+	unsigned long of_data = (unsigned long)of_id->data;
 	int mres = 0;
 	int i;
 	int ret = -ENODEV;
@@ -444,7 +473,13 @@ static int rcar_thermal_probe(struct platform_device *pdev)
 		if (ret < 0)
 			goto error_unregister;
 
-		priv->zone = thermal_zone_device_register("rcar_thermal",
+		if (of_data = USE_OF_THERMAL)
+			priv->zone = thermal_zone_of_sensor_register(
+						dev, i, priv,
+						&rcar_thermal_zone_of_ops);
+		else
+			priv->zone = thermal_zone_device_register(
+						"rcar_thermal",
 						1, 0, priv,
 						&rcar_thermal_zone_ops, NULL, 0,
 						idle);
-- 
1.9.1

Re: [PATCH 5/8 v6] thermal: rcar: enable to use thermal-zone on DT

[Rob Herring]

On Fri, Dec 18, 2015 at 12:25:51AM +0000, Kuninori Morimoto wrote:
> 
> From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> 
> This patch enables to use thermal-zone on DT if it was calles as
> "renesas,rcar-thermal-gen2".
> Previous style (= non thermal-zone) is still supported by
> "renesas,rcar-thermal" to keep compatibility for "git bisect".
> 
> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> ---
> v5 -> v6
> 
>  - "was call" -> "was called"

Except there is a typo...

>  - add reason why it keeps previous style
> 
>  .../devicetree/bindings/thermal/rcar-thermal.txt   | 37 +++++++++++++++++-
>  drivers/thermal/rcar_thermal.c                     | 45 +++++++++++++++++++---
>  2 files changed, 75 insertions(+), 7 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt
> index 332e625..e5ee3f1 100644
> --- a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt
> +++ b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt
> @@ -1,8 +1,9 @@
>  * Renesas R-Car Thermal
>  
>  Required properties:
> -- compatible		: "renesas,thermal-<soctype>", "renesas,rcar-thermal"
> -			  as fallback.
> +- compatible		: "renesas,thermal-<soctype>",
> +			   "renesas,rcar-gen2-thermal" (with thermal-zone) or
> +			   "renesas,rcar-thermal" (without thermal-zone) as fallback.
>  			  Examples with soctypes are:
>  			    - "renesas,thermal-r8a73a4" (R-Mobile APE6)
>  			    - "renesas,thermal-r8a7779" (R-Car H1)

> +thermal: thermal@e61f0000 {
> +	compatible =	"renesas,thermal-r8a7790",
> +			"renesas,rcar-gen2-thermal",
> +			"renesas,rcar-thermal";

Isn't having both mutually exclusive?

Rob

Re: [PATCH 5/8 v6] thermal: rcar: enable to use thermal-zone on DT

[Kuninori Morimoto]

Hi

> > +thermal: thermal@e61f0000 {
> > +	compatible =	"renesas,thermal-r8a7790",
> > +			"renesas,rcar-gen2-thermal",
> > +			"renesas,rcar-thermal";
> 
> Isn't having both mutually exclusive?

"rcar-thermal" is very basic version of "rcar-gen2",
and "rcar-gen2" is common/basic version of "thermal-r8xxx"

Re: [PATCH 5/8 v6] thermal: rcar: enable to use thermal-zone on DT

[Kuninori Morimoto]

Hi

ping ?

> From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> 
> This patch enables to use thermal-zone on DT if it was calles as
> "renesas,rcar-thermal-gen2".
> Previous style (= non thermal-zone) is still supported by
> "renesas,rcar-thermal" to keep compatibility for "git bisect".
> 
> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> ---
> v5 -> v6
> 
>  - "was call" -> "was called"
>  - add reason why it keeps previous style
> 
>  .../devicetree/bindings/thermal/rcar-thermal.txt   | 37 +++++++++++++++++-
>  drivers/thermal/rcar_thermal.c                     | 45 +++++++++++++++++++---
>  2 files changed, 75 insertions(+), 7 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt
> index 332e625..e5ee3f1 100644
> --- a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt
> +++ b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt
> @@ -1,8 +1,9 @@
>  * Renesas R-Car Thermal
>  
>  Required properties:
> -- compatible		: "renesas,thermal-<soctype>", "renesas,rcar-thermal"
> -			  as fallback.
> +- compatible		: "renesas,thermal-<soctype>",
> +			   "renesas,rcar-gen2-thermal" (with thermal-zone) or
> +			   "renesas,rcar-thermal" (without thermal-zone) as fallback.
>  			  Examples with soctypes are:
>  			    - "renesas,thermal-r8a73a4" (R-Mobile APE6)
>  			    - "renesas,thermal-r8a7779" (R-Car H1)
> @@ -36,3 +37,35 @@ thermal@e61f0000 {
>  		0xe61f0300 0x38>;
>  	interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
>  };
> +
> +Example (with thermal-zone):
> +
> +thermal-zones {
> +	cpu_thermal: cpu-thermal {
> +		polling-delay-passive	= <1000>;
> +		polling-delay		= <5000>;
> +
> +		thermal-sensors = <&thermal>;
> +
> +		trips {
> +			cpu-crit {
> +				temperature	= <115000>;
> +				hysteresis	= <0>;
> +				type		= "critical";
> +			};
> +		};
> +		cooling-maps {
> +		};
> +	};
> +};
> +
> +thermal: thermal@e61f0000 {
> +	compatible =	"renesas,thermal-r8a7790",
> +			"renesas,rcar-gen2-thermal",
> +			"renesas,rcar-thermal";
> +	reg = <0 0xe61f0000 0 0x14>, <0 0xe61f0100 0 0x38>;
> +	interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
> +	clocks = <&mstp5_clks R8A7790_CLK_THERMAL>;
> +	power-domains = <&cpg_clocks>;
> +	#thermal-sensor-cells = <0>;
> +};
> diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
> index 30602f2..e92f29b 100644
> --- a/drivers/thermal/rcar_thermal.c
> +++ b/drivers/thermal/rcar_thermal.c
> @@ -23,6 +23,7 @@
>  #include <linux/interrupt.h>
>  #include <linux/io.h>
>  #include <linux/module.h>
> +#include <linux/of_device.h>
>  #include <linux/platform_device.h>
>  #include <linux/pm_runtime.h>
>  #include <linux/reboot.h>
> @@ -75,8 +76,10 @@ struct rcar_thermal_priv {
>  #define rcar_has_irq_support(priv)	((priv)->common->base)
>  #define rcar_id_to_shift(priv)		((priv)->id * 8)
>  
> +#define USE_OF_THERMAL	1
>  static const struct of_device_id rcar_thermal_dt_ids[] = {
>  	{ .compatible = "renesas,rcar-thermal", },
> +	{ .compatible = "renesas,rcar-gen2-thermal", .data = (void *)USE_OF_THERMAL },
>  	{},
>  };
>  MODULE_DEVICE_TABLE(of, rcar_thermal_dt_ids);
> @@ -200,9 +203,9 @@ err_out_unlock:
>  	return ret;
>  }
>  
> -static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
> +static int rcar_thermal_get_current_temp(struct rcar_thermal_priv *priv,
> +					 int *temp)
>  {
> -	struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
>  	int tmp;
>  	int ret;
>  
> @@ -226,6 +229,20 @@ static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
>  	return 0;
>  }
>  
> +static int rcar_thermal_of_get_temp(void *data, int *temp)
> +{
> +	struct rcar_thermal_priv *priv = data;
> +
> +	return rcar_thermal_get_current_temp(priv, temp);
> +}
> +
> +static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
> +{
> +	struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
> +
> +	return rcar_thermal_get_current_temp(priv, temp);
> +}
> +
>  static int rcar_thermal_get_trip_type(struct thermal_zone_device *zone,
>  				      int trip, enum thermal_trip_type *type)
>  {
> @@ -282,6 +299,10 @@ static int rcar_thermal_notify(struct thermal_zone_device *zone,
>  	return 0;
>  }
>  
> +static const struct thermal_zone_of_device_ops rcar_thermal_zone_of_ops = {
> +	.get_temp	= rcar_thermal_of_get_temp,
> +};
> +
>  static struct thermal_zone_device_ops rcar_thermal_zone_ops = {
>  	.get_temp	= rcar_thermal_get_temp,
>  	.get_trip_type	= rcar_thermal_get_trip_type,
> @@ -318,14 +339,20 @@ static void rcar_thermal_work(struct work_struct *work)
>  
>  	priv = container_of(work, struct rcar_thermal_priv, work.work);
>  
> -	rcar_thermal_get_temp(priv->zone, &cctemp);
> +	ret = rcar_thermal_get_current_temp(priv, &cctemp);
> +	if (ret < 0)
> +		return;
> +
>  	ret = rcar_thermal_update_temp(priv);
>  	if (ret < 0)
>  		return;
>  
>  	rcar_thermal_irq_enable(priv);
>  
> -	rcar_thermal_get_temp(priv->zone, &nctemp);
> +	ret = rcar_thermal_get_current_temp(priv, &nctemp);
> +	if (ret < 0)
> +		return;
> +
>  	if (nctemp != cctemp)
>  		thermal_zone_device_update(priv->zone);
>  }
> @@ -386,6 +413,8 @@ static int rcar_thermal_probe(struct platform_device *pdev)
>  	struct rcar_thermal_priv *priv;
>  	struct device *dev = &pdev->dev;
>  	struct resource *res, *irq;
> +	const struct of_device_id *of_id = of_match_device(rcar_thermal_dt_ids, dev);
> +	unsigned long of_data = (unsigned long)of_id->data;
>  	int mres = 0;
>  	int i;
>  	int ret = -ENODEV;
> @@ -444,7 +473,13 @@ static int rcar_thermal_probe(struct platform_device *pdev)
>  		if (ret < 0)
>  			goto error_unregister;
>  
> -		priv->zone = thermal_zone_device_register("rcar_thermal",
> +		if (of_data = USE_OF_THERMAL)
> +			priv->zone = thermal_zone_of_sensor_register(
> +						dev, i, priv,
> +						&rcar_thermal_zone_of_ops);
> +		else
> +			priv->zone = thermal_zone_device_register(
> +						"rcar_thermal",
>  						1, 0, priv,
>  						&rcar_thermal_zone_ops, NULL, 0,
>  						idle);
> -- 
> 1.9.1
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-sh" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

[PATCH 6/8 v5] ARM: shmobile: r8a7790: enable to use thermal-zone

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

This patch enables to use thermal-zone on r8a7790.
This thermal sensor can measure temperature from -40000 to 125000,
but over 117000 can be critical on this chip.
Thus, default critical temperature is now set as 115000 (this driver
is using 5000 steps) (Current critical temperature is using it as
90000, but there is no big reason about it)

And it doesn't check thermal zone periodically (same as current
behavior). You can exchange it by modifying polling-delay[-passive]
property.

You can set trip temp if your kernel has CONFIG_THERMAL_WRITABLE_TRIPS,
but you need to take care to use it, since it will call
orderly_poweroff() it it reaches to the value.
echo $temp > /sys/class/thermal/thermal_zone0/trip_point_0_temp

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
v4 -> v5

 - no change

 arch/arm/boot/dts/r8a7790.dtsi | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi
index 9f3036b..2203b97 100644
--- a/arch/arm/boot/dts/r8a7790.dtsi
+++ b/arch/arm/boot/dts/r8a7790.dtsi
@@ -112,6 +112,25 @@
 		};
 	};
 
+	thermal-zones {
+		cpu_thermal: cpu-thermal {
+			polling-delay-passive	= <0>;
+			polling-delay		= <0>;
+
+			thermal-sensors = <&thermal>;
+
+			trips {
+				cpu-crit {
+					temperature	= <115000>;
+					hysteresis	= <0>;
+					type		= "critical";
+				};
+			};
+			cooling-maps {
+			};
+		};
+	};
+
 	gic: interrupt-controller@f1001000 {
 		compatible = "arm,gic-400";
 		#interrupt-cells = <3>;
@@ -202,12 +221,15 @@
 		power-domains = <&cpg_clocks>;
 	};
 
-	thermal@e61f0000 {
-		compatible = "renesas,thermal-r8a7790", "renesas,rcar-thermal";
+	thermal: thermal@e61f0000 {
+		compatible =	"renesas,thermal-r8a7790",
+				"renesas,rcar-gen2-thermal",
+				"renesas,rcar-thermal";
 		reg = <0 0xe61f0000 0 0x14>, <0 0xe61f0100 0 0x38>;
 		interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp5_clks R8A7790_CLK_THERMAL>;
 		power-domains = <&cpg_clocks>;
+		#thermal-sensor-cells = <0>;
 	};
 
 	timer {
-- 
1.9.1

[PATCH 7/8 v5] ARM: shmobile: r8a7791: enable to use thermal-zone

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

This patch enables to use thermal-zone on r8a7791.
This thermal sensor can measure temperature from -40000 to 125000,
but over 117000 can be critical on this chip.
Thus, default critical temperature is now set as 115000 (this driver
is using 5000 steps) (Current critical temperature is using it as
90000, but there is no big reason about it)

And it doesn't check thermal zone periodically (same as current
behavior). You can exchange it by modifying polling-delay[-passive]
property.

You can set trip temp if your kernel has CONFIG_THERMAL_WRITABLE_TRIPS,
but you need to take care to use it, since it will call
orderly_poweroff() it it reaches to the value.
echo $temp > /sys/class/thermal/thermal_zone0/trip_point_0_temp

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
v4 -> v5

 - no change

 arch/arm/boot/dts/r8a7791.dtsi | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/r8a7791.dtsi b/arch/arm/boot/dts/r8a7791.dtsi
index 3776974..9b37c80 100644
--- a/arch/arm/boot/dts/r8a7791.dtsi
+++ b/arch/arm/boot/dts/r8a7791.dtsi
@@ -69,6 +69,25 @@
 		};
 	};
 
+	thermal-zones {
+		cpu_thermal: cpu-thermal {
+			polling-delay-passive	= <0>;
+			polling-delay		= <0>;
+
+			thermal-sensors = <&thermal>;
+
+			trips {
+				cpu-crit {
+					temperature	= <115000>;
+					hysteresis	= <0>;
+					type		= "critical";
+				};
+			};
+			cooling-maps {
+			};
+		};
+	};
+
 	gic: interrupt-controller@f1001000 {
 		compatible = "arm,gic-400";
 		#interrupt-cells = <3>;
@@ -185,12 +204,15 @@
 		power-domains = <&cpg_clocks>;
 	};
 
-	thermal@e61f0000 {
-		compatible = "renesas,thermal-r8a7791", "renesas,rcar-thermal";
+	thermal: thermal@e61f0000 {
+		compatible =	"renesas,thermal-r8a7791",
+				"renesas,rcar-gen2-thermal",
+				"renesas,rcar-thermal";
 		reg = <0 0xe61f0000 0 0x14>, <0 0xe61f0100 0 0x38>;
 		interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp5_clks R8A7791_CLK_THERMAL>;
 		power-domains = <&cpg_clocks>;
+		#thermal-sensor-cells = <0>;
 	};
 
 	timer {
-- 
1.9.1

[PATCH 8/8 v5] thermal: trip_point_temp_store() calls thermal_zone_device_update()

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

trip_point_temp_store() updates trip temperature. It should call
thermal_zone_device_update() immediately.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
v4 -> v5

 - implemented on thermal_core.c

 drivers/thermal/thermal_core.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index d9e525c..768fb10 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -676,8 +676,12 @@ trip_point_temp_store(struct device *dev, struct device_attribute *attr,
 		return -EINVAL;
 
 	ret = tz->ops->set_trip_temp(tz, trip, temperature);
+	if (ret)
+		return ret;
 
-	return ret ? ret : count;
+	thermal_zone_device_update(tz);
+
+	return count;
 }
 
 static ssize_t
-- 
1.9.1

Re: [PATCH 0/8 v5] enable to use thermal-zone on r8a7790/1

[Simon Horman]

On Tue, Dec 15, 2015 at 01:16:20AM +0000, Kuninori Morimoto wrote:
> 
> Hi
> 
> These are v5 of thermal-zone support for r8a7790/r8a7791.
> 
> Kuninori Morimoto (8):
>       1) thermal: rcar: move rcar_thermal_dt_ids to upside
>       2) thermal: rcar: check every rcar_thermal_update_temp() return value
>       3) thermal: rcar: check irq possibility in rcar_thermal_irq_xxx()
>       4) thermal: rcar: rcar_thermal_get_temp() return error if strange temp
>       5) thermal: rcar: enable to use thermal-zone on DT
>       6) ARM: shmobile: r8a7790: enable to use thermal-zone
>       7) ARM: shmobile: r8a7791: enable to use thermal-zone
>       8) thermal: of-thermal: of_thermal_set_trip_temp() call thermal_zone_device_update()

I have marked patches 6 and 7 as deferred pending acceptance of the driver
changes.

Re: [PATCH 0/8 v5] enable to use thermal-zone on r8a7790/1

[Eduardo Valentin]

On Tue, Dec 15, 2015 at 01:16:20AM +0000, Kuninori Morimoto wrote:
> 
> Hi
> 
> These are v5 of thermal-zone support for r8a7790/r8a7791.
> 
> Kuninori Morimoto (8):
>       1) thermal: rcar: move rcar_thermal_dt_ids to upside
>       2) thermal: rcar: check every rcar_thermal_update_temp() return value
>       3) thermal: rcar: check irq possibility in rcar_thermal_irq_xxx()
>       4) thermal: rcar: rcar_thermal_get_temp() return error if strange temp

Applied the four above

>       5) thermal: rcar: enable to use thermal-zone on DT

This one requires further discussion.

>       6) ARM: shmobile: r8a7790: enable to use thermal-zone
>       7) ARM: shmobile: r8a7791: enable to use thermal-zone

These two will go on other tree, but depend on 5. So, still on hold.

>       8) thermal: of-thermal: of_thermal_set_trip_temp() call thermal_zone_device_update()
> 

Applied number 8 too.


BR,

Eduardo