[PATCH] thermal: rcar: add .set_trip_temp support
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: 2015-11-25 05:42:38
Also in:
linux-pm, linux-sh, lkml
Subsystem:
the rest, thermal · Maintainers:
Linus Torvalds, Rafael J. Wysocki, Daniel Lezcano
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> You can set trip temp if your kernel has CONFIG_THERMAL_WRITABLE_TRIPS echo $temp > /sys/class/thermal/thermal_zone0/trip_point_0_temp -45000 < $temp < 125000 is supported Default is 90000 Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> --- This patch is v2 of "[PATCH] thermal: rcar: enable to set tripN-temp via DT" I think it will be full-DT feature if it uses of-thermal, but this driver is used from non-DT SoC too. We would like to keep non-DT support. And we would like to do is only exchange trip temp. .set_trip_temp is very enouth for it at this point. But, it can use of-thermal feature in the future. drivers/thermal/rcar_thermal.c | 27 +++++++++++++++++++++++---- 1 file changed, 23 insertions(+), 4 deletions(-)
diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index 5d4ae7d..1eaa1be 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c@@ -63,6 +63,7 @@ struct rcar_thermal_priv { struct mutex lock; struct list_head list; int id; + int trip_temp; u32 ctemp; };
@@ -222,7 +223,7 @@ static int rcar_thermal_get_trip_type(struct thermal_zone_device *zone, /* see rcar_thermal_get_temp() */ switch (trip) { - case 0: /* +90 <= temp */ + case 0: *type = THERMAL_TRIP_CRITICAL; break; default:
@@ -241,8 +242,8 @@ static int rcar_thermal_get_trip_temp(struct thermal_zone_device *zone, /* see rcar_thermal_get_temp() */ switch (trip) { - case 0: /* +90 <= temp */ - *temp = MCELSIUS(90); + case 0: + *temp = priv->trip_temp; break; default: dev_err(dev, "rcar driver trip error\n");
@@ -270,10 +271,27 @@ static int rcar_thermal_notify(struct thermal_zone_device *zone, return 0; } +static int rcar_thermal_set_trip_temp(struct thermal_zone_device *zone, + int trip, int temp) +{ + struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone); + + if (trip != 0) + return -EINVAL; + + if (temp < -45000 || temp > 125000) + return -EINVAL; + + priv->trip_temp = temp; + + return 0; +} + static struct thermal_zone_device_ops rcar_thermal_zone_ops = { .get_temp = rcar_thermal_get_temp, .get_trip_type = rcar_thermal_get_trip_type, .get_trip_temp = rcar_thermal_get_trip_temp, + .set_trip_temp = rcar_thermal_set_trip_temp, .notify = rcar_thermal_notify, };
@@ -418,13 +436,14 @@ static int rcar_thermal_probe(struct platform_device *pdev) priv->common = common; priv->id = i; + priv->trip_temp = MCELSIUS(90); /* default*/ mutex_init(&priv->lock); INIT_LIST_HEAD(&priv->list); INIT_DELAYED_WORK(&priv->work, rcar_thermal_work); rcar_thermal_update_temp(priv); priv->zone = thermal_zone_device_register("rcar_thermal", - 1, 0, priv, + 1, 1, priv, &rcar_thermal_zone_ops, NULL, 0, idle); if (IS_ERR(priv->zone)) {
--
1.9.1