diff options
| author | kuninori.morimoto.gx@renesas.com <kuninori.morimoto.gx@renesas.com> | 2012-12-03 03:48:41 +0100 |
|---|---|---|
| committer | Zhang Rui <rui.zhang@intel.com> | 2013-01-04 08:37:45 +0100 |
| commit | d2a73e225d113fdccd80373ad9aeb2b58b32a30b (patch) | |
| tree | af255ad70f782ef6a32cde24df5f94522414f531 /drivers/thermal | |
| parent | Thermal: exynos: Add sysfs node supporting exynos's emulation mode. (diff) | |
| download | linux-d2a73e225d113fdccd80373ad9aeb2b58b32a30b.tar.xz linux-d2a73e225d113fdccd80373ad9aeb2b58b32a30b.zip | |
thermal: rcar: add .get_trip_type/temp and .notify support
This patch adds .get_trip_type(), .get_trip_temp(), and .notify()
on rcar_thermal_zone_ops.
Driver will try platform power OFF if it reached to
critical temperature.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/rcar_thermal.c | 68 |
1 files changed, 65 insertions, 3 deletions
diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c index 90db951725da..89979ff10e27 100644 --- a/drivers/thermal/rcar_thermal.c +++ b/drivers/thermal/rcar_thermal.c @@ -22,10 +22,13 @@ #include <linux/io.h> #include <linux/module.h> #include <linux/platform_device.h> +#include <linux/reboot.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/thermal.h> +#define IDLE_INTERVAL 5000 + #define THSCR 0x2c #define THSSR 0x30 @@ -176,8 +179,66 @@ static int rcar_thermal_get_temp(struct thermal_zone_device *zone, return 0; } +static int rcar_thermal_get_trip_type(struct thermal_zone_device *zone, + int trip, enum thermal_trip_type *type) +{ + struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone); + + /* see rcar_thermal_get_temp() */ + switch (trip) { + case 0: /* +90 <= temp */ + *type = THERMAL_TRIP_CRITICAL; + break; + default: + dev_err(priv->dev, "rcar driver trip error\n"); + return -EINVAL; + } + + return 0; +} + +static int rcar_thermal_get_trip_temp(struct thermal_zone_device *zone, + int trip, unsigned long *temp) +{ + struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone); + + /* see rcar_thermal_get_temp() */ + switch (trip) { + case 0: /* +90 <= temp */ + *temp = MCELSIUS(90); + break; + default: + dev_err(priv->dev, "rcar driver trip error\n"); + return -EINVAL; + } + + return 0; +} + +static int rcar_thermal_notify(struct thermal_zone_device *zone, + int trip, enum thermal_trip_type type) +{ + struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone); + + switch (type) { + case THERMAL_TRIP_CRITICAL: + /* FIXME */ + dev_warn(priv->dev, + "Thermal reached to critical temperature\n"); + machine_power_off(); + break; + default: + break; + } + + return 0; +} + static struct thermal_zone_device_ops rcar_thermal_zone_ops = { - .get_temp = rcar_thermal_get_temp, + .get_temp = rcar_thermal_get_temp, + .get_trip_type = rcar_thermal_get_trip_type, + .get_trip_temp = rcar_thermal_get_trip_temp, + .notify = rcar_thermal_notify, }; /* @@ -211,8 +272,9 @@ static int rcar_thermal_probe(struct platform_device *pdev) return -ENOMEM; } - zone = thermal_zone_device_register("rcar_thermal", 0, 0, priv, - &rcar_thermal_zone_ops, NULL, 0, 0); + zone = thermal_zone_device_register("rcar_thermal", 1, 0, priv, + &rcar_thermal_zone_ops, NULL, 0, + IDLE_INTERVAL); if (IS_ERR(zone)) { dev_err(&pdev->dev, "thermal zone device is NULL\n"); return PTR_ERR(zone); |