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thermal: rcar: enable to use thermal-zone on DT

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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>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
This commit is contained in:
Kuninori Morimoto 2016-01-28 02:45:08 +00:00 committed by Eduardo Valentin
parent 42bbe400fb
commit 8b477ea563
2 changed files with 75 additions and 7 deletions
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37
Documentation/devicetree/bindings/thermal/rcar-thermal.txt
View File

@ -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>;
};

45
drivers/thermal/rcar_thermal.c
View File

@ -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);
}
@ -403,6 +430,8 @@ 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;
@ -463,7 +492,13 @@ 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);