thermal: rcar: enable to use thermal-zone on DT
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>hifive-unleashed-5.1
Kuninori Morimoto
Eduardo Valentin
parent
42bbe400fb
commit
8b477ea563
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@ -1,8 +1,9 @@
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* Renesas R-Car Thermal
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Required properties:
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- compatible : "renesas,thermal-<soctype>", "renesas,rcar-thermal"
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as fallback.
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- compatible : "renesas,thermal-<soctype>",
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"renesas,rcar-gen2-thermal" (with thermal-zone) or
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"renesas,rcar-thermal" (without thermal-zone) as fallback.
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Examples with soctypes are:
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- "renesas,thermal-r8a73a4" (R-Mobile APE6)
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- "renesas,thermal-r8a7779" (R-Car H1)
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@ -36,3 +37,35 @@ thermal@e61f0000 {
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0xe61f0300 0x38>;
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interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
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};
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Example (with thermal-zone):
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thermal-zones {
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cpu_thermal: cpu-thermal {
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polling-delay-passive = <1000>;
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polling-delay = <5000>;
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thermal-sensors = <&thermal>;
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trips {
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cpu-crit {
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temperature = <115000>;
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hysteresis = <0>;
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type = "critical";
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};
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};
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cooling-maps {
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};
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};
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};
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thermal: thermal@e61f0000 {
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compatible = "renesas,thermal-r8a7790",
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"renesas,rcar-gen2-thermal",
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"renesas,rcar-thermal";
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reg = <0 0xe61f0000 0 0x14>, <0 0xe61f0100 0 0x38>;
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interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&mstp5_clks R8A7790_CLK_THERMAL>;
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power-domains = <&cpg_clocks>;
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#thermal-sensor-cells = <0>;
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};
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@ -23,6 +23,7 @@
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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#include <linux/reboot.h>
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@ -75,8 +76,10 @@ struct rcar_thermal_priv {
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#define rcar_has_irq_support(priv) ((priv)->common->base)
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#define rcar_id_to_shift(priv) ((priv)->id * 8)
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#define USE_OF_THERMAL 1
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static const struct of_device_id rcar_thermal_dt_ids[] = {
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{ .compatible = "renesas,rcar-thermal", },
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{ .compatible = "renesas,rcar-gen2-thermal", .data = (void *)USE_OF_THERMAL },
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{},
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};
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MODULE_DEVICE_TABLE(of, rcar_thermal_dt_ids);
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@ -200,9 +203,9 @@ err_out_unlock:
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return ret;
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}
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static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
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static int rcar_thermal_get_current_temp(struct rcar_thermal_priv *priv,
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int *temp)
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{
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struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
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int tmp;
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int ret;
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@ -226,6 +229,20 @@ static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
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return 0;
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}
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static int rcar_thermal_of_get_temp(void *data, int *temp)
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{
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struct rcar_thermal_priv *priv = data;
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return rcar_thermal_get_current_temp(priv, temp);
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}
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static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
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{
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struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
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return rcar_thermal_get_current_temp(priv, temp);
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}
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static int rcar_thermal_get_trip_type(struct thermal_zone_device *zone,
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int trip, enum thermal_trip_type *type)
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{
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@ -282,6 +299,10 @@ static int rcar_thermal_notify(struct thermal_zone_device *zone,
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return 0;
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}
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static const struct thermal_zone_of_device_ops rcar_thermal_zone_of_ops = {
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.get_temp = rcar_thermal_of_get_temp,
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};
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static struct thermal_zone_device_ops rcar_thermal_zone_ops = {
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.get_temp = rcar_thermal_get_temp,
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.get_trip_type = rcar_thermal_get_trip_type,
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@ -318,14 +339,20 @@ static void rcar_thermal_work(struct work_struct *work)
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priv = container_of(work, struct rcar_thermal_priv, work.work);
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rcar_thermal_get_temp(priv->zone, &cctemp);
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ret = rcar_thermal_get_current_temp(priv, &cctemp);
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if (ret < 0)
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return;
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ret = rcar_thermal_update_temp(priv);
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if (ret < 0)
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return;
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rcar_thermal_irq_enable(priv);
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rcar_thermal_get_temp(priv->zone, &nctemp);
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ret = rcar_thermal_get_current_temp(priv, &nctemp);
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if (ret < 0)
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return;
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if (nctemp != cctemp)
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thermal_zone_device_update(priv->zone);
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}
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@ -403,6 +430,8 @@ static int rcar_thermal_probe(struct platform_device *pdev)
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struct rcar_thermal_priv *priv;
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struct device *dev = &pdev->dev;
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struct resource *res, *irq;
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const struct of_device_id *of_id = of_match_device(rcar_thermal_dt_ids, dev);
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unsigned long of_data = (unsigned long)of_id->data;
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int mres = 0;
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int i;
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int ret = -ENODEV;
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@ -463,7 +492,13 @@ static int rcar_thermal_probe(struct platform_device *pdev)
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if (ret < 0)
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goto error_unregister;
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priv->zone = thermal_zone_device_register("rcar_thermal",
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if (of_data == USE_OF_THERMAL)
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priv->zone = thermal_zone_of_sensor_register(
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dev, i, priv,
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&rcar_thermal_zone_of_ops);
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else
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priv->zone = thermal_zone_device_register(
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"rcar_thermal",
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1, 0, priv,
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&rcar_thermal_zone_ops, NULL, 0,
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idle);
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