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authorAmit Daniel Kachhap <amit.daniel@samsung.com>2013-06-24 16:20:37 +0530
committerEduardo Valentin <eduardo.valentin@ti.com>2013-08-13 09:52:01 -0400
commit5c3cf5527e316973d7140a1258e156f3d4e4a8ac (patch)
treee2ce65ad11cd1d9c92890d672e2e1134070cd7d6 /drivers
parent23a3eb1062d18001f895bd73aae8554870875cb6 (diff)
downloadlinux-5c3cf5527e316973d7140a1258e156f3d4e4a8ac.tar.bz2
thermal: exynos: Make the zone handling use trip information
This code simplifies the zone handling to use the trip information passed by the TMU driver and not the hardcoded macros. This also helps in adding more zone support. Acked-by: Kukjin Kim <kgene.kim@samsung.com> Acked-by: Jonghwa Lee <jonghwa3.lee@samsung.com> Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com> Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/thermal/samsung/exynos_thermal_common.c67
-rw-r--r--drivers/thermal/samsung/exynos_thermal_common.h3
-rw-r--r--drivers/thermal/samsung/exynos_tmu.c5
3 files changed, 47 insertions, 28 deletions
diff --git a/drivers/thermal/samsung/exynos_thermal_common.c b/drivers/thermal/samsung/exynos_thermal_common.c
index 99318e533c44..af0ae77eb019 100644
--- a/drivers/thermal/samsung/exynos_thermal_common.c
+++ b/drivers/thermal/samsung/exynos_thermal_common.c
@@ -79,17 +79,24 @@ static int exynos_set_mode(struct thermal_zone_device *thermal,
static int exynos_get_trip_type(struct thermal_zone_device *thermal, int trip,
enum thermal_trip_type *type)
{
- switch (GET_ZONE(trip)) {
- case MONITOR_ZONE:
- case WARN_ZONE:
- *type = THERMAL_TRIP_ACTIVE;
- break;
- case PANIC_ZONE:
+ struct exynos_thermal_zone *th_zone = thermal->devdata;
+ int max_trip = th_zone->sensor_conf->trip_data.trip_count;
+ int trip_type;
+
+ if (trip < 0 || trip >= max_trip)
+ return -EINVAL;
+
+ trip_type = th_zone->sensor_conf->trip_data.trip_type[trip];
+
+ if (trip_type == SW_TRIP)
*type = THERMAL_TRIP_CRITICAL;
- break;
- default:
+ else if (trip_type == THROTTLE_ACTIVE)
+ *type = THERMAL_TRIP_ACTIVE;
+ else if (trip_type == THROTTLE_PASSIVE)
+ *type = THERMAL_TRIP_PASSIVE;
+ else
return -EINVAL;
- }
+
return 0;
}
@@ -98,8 +105,9 @@ static int exynos_get_trip_temp(struct thermal_zone_device *thermal, int trip,
unsigned long *temp)
{
struct exynos_thermal_zone *th_zone = thermal->devdata;
+ int max_trip = th_zone->sensor_conf->trip_data.trip_count;
- if (trip < GET_TRIP(MONITOR_ZONE) || trip > GET_TRIP(PANIC_ZONE))
+ if (trip < 0 || trip >= max_trip)
return -EINVAL;
*temp = th_zone->sensor_conf->trip_data.trip_val[trip];
@@ -113,10 +121,10 @@ static int exynos_get_trip_temp(struct thermal_zone_device *thermal, int trip,
static int exynos_get_crit_temp(struct thermal_zone_device *thermal,
unsigned long *temp)
{
- int ret;
- /* Panic zone */
- ret = exynos_get_trip_temp(thermal, GET_TRIP(PANIC_ZONE), temp);
- return ret;
+ struct exynos_thermal_zone *th_zone = thermal->devdata;
+ int max_trip = th_zone->sensor_conf->trip_data.trip_count;
+ /* Get the temp of highest trip*/
+ return exynos_get_trip_temp(thermal, max_trip - 1, temp);
}
/* Bind callback functions for thermal zone */
@@ -348,19 +356,28 @@ int exynos_register_thermal(struct thermal_sensor_conf *sensor_conf)
return -ENOMEM;
th_zone->sensor_conf = sensor_conf;
- cpumask_set_cpu(0, &mask_val);
- th_zone->cool_dev[0] = cpufreq_cooling_register(&mask_val);
- if (IS_ERR(th_zone->cool_dev[0])) {
- pr_err("Failed to register cpufreq cooling device\n");
- ret = -EINVAL;
- goto err_unregister;
+ /*
+ * TODO: 1) Handle multiple cooling devices in a thermal zone
+ * 2) Add a flag/name in cooling info to map to specific
+ * sensor
+ */
+ if (sensor_conf->cooling_data.freq_clip_count > 0) {
+ cpumask_set_cpu(0, &mask_val);
+ th_zone->cool_dev[th_zone->cool_dev_size] =
+ cpufreq_cooling_register(&mask_val);
+ if (IS_ERR(th_zone->cool_dev[th_zone->cool_dev_size])) {
+ pr_err("Failed to register cpufreq cooling device\n");
+ ret = -EINVAL;
+ goto err_unregister;
+ }
+ th_zone->cool_dev_size++;
}
- th_zone->cool_dev_size++;
- th_zone->therm_dev = thermal_zone_device_register(sensor_conf->name,
- EXYNOS_ZONE_COUNT, 0, th_zone, &exynos_dev_ops, NULL, 0,
- sensor_conf->trip_data.trigger_falling ?
- 0 : IDLE_INTERVAL);
+ th_zone->therm_dev = thermal_zone_device_register(
+ sensor_conf->name, sensor_conf->trip_data.trip_count,
+ 0, th_zone, &exynos_dev_ops, NULL, 0,
+ sensor_conf->trip_data.trigger_falling ? 0 :
+ IDLE_INTERVAL);
if (IS_ERR(th_zone->therm_dev)) {
pr_err("Failed to register thermal zone device\n");
diff --git a/drivers/thermal/samsung/exynos_thermal_common.h b/drivers/thermal/samsung/exynos_thermal_common.h
index 6ca3096568e4..bfcf69ecd123 100644
--- a/drivers/thermal/samsung/exynos_thermal_common.h
+++ b/drivers/thermal/samsung/exynos_thermal_common.h
@@ -42,8 +42,6 @@
#define GET_ZONE(trip) (trip + 2)
#define GET_TRIP(zone) (zone - 2)
-#define EXYNOS_ZONE_COUNT 3
-
enum trigger_type {
THROTTLE_ACTIVE = 1,
THROTTLE_PASSIVE,
@@ -69,6 +67,7 @@ struct freq_clip_table {
struct thermal_trip_point_conf {
int trip_val[MAX_TRIP_COUNT];
+ int trip_type[MAX_TRIP_COUNT];
int trip_count;
unsigned char trigger_falling;
};
diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 40e0cfd3e84f..acbd29546783 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -509,9 +509,12 @@ static int exynos_tmu_probe(struct platform_device *pdev)
pdata->trigger_enable[1] + pdata->trigger_enable[2]+
pdata->trigger_enable[3];
- for (i = 0; i < exynos_sensor_conf.trip_data.trip_count; i++)
+ for (i = 0; i < exynos_sensor_conf.trip_data.trip_count; i++) {
exynos_sensor_conf.trip_data.trip_val[i] =
pdata->threshold + pdata->trigger_levels[i];
+ exynos_sensor_conf.trip_data.trip_type[i] =
+ pdata->trigger_type[i];
+ }
exynos_sensor_conf.trip_data.trigger_falling = pdata->threshold_falling;