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authorKapileshwar Singh <kapileshwar.singh@arm.com>2015-02-18 19:04:21 +0300
committerEduardo Valentin <edubezval@gmail.com>2015-05-05 07:27:50 +0300
commit6cd9e9f629f11b9412d4e9aa294c029dbb36b3cf (patch)
tree33ef735ad3704b0596eab47e24a22853ca9c31a1 /drivers/thermal
parent5ebe6afaf0057ac3eaeb98defd5456894b446d22 (diff)
downloadlinux-6cd9e9f629f11b9412d4e9aa294c029dbb36b3cf.tar.xz
thermal: of: fix cooling device weights in device tree
Currently you can specify the weight of the cooling device in the device tree but that information is not populated to the thermal_bind_params where the fair share governor expects it to be. The of thermal zone device doesn't have a thermal_bind_params structure and arguably it's better to pass the weight inside the thermal_instance as it is specific to the bind of a cooling device to a thermal zone parameter. Core thermal code is fixed to populate the weight in the instance from the thermal_bind_params, so platform code that was passing the weight inside the thermal_bind_params continue to work seamlessly. While we are at it, create a default value for the weight parameter for those thermal zones that currently don't define it and remove the hardcoded default in of-thermal. Cc: Zhang Rui <rui.zhang@intel.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Len Brown <lenb@kernel.org> Cc: Peter Feuerer <peter@piie.net> Cc: Darren Hart <dvhart@infradead.org> Cc: Eduardo Valentin <edubezval@gmail.com> Cc: Kukjin Kim <kgene@kernel.org> Cc: Durgadoss R <durgadoss.r@intel.com> Signed-off-by: Kapileshwar Singh <kapileshwar.singh@arm.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Diffstat (limited to 'drivers/thermal')
-rw-r--r--drivers/thermal/db8500_thermal.c2
-rw-r--r--drivers/thermal/fair_share.c2
-rw-r--r--drivers/thermal/imx_thermal.c3
-rw-r--r--drivers/thermal/of-thermal.c5
-rw-r--r--drivers/thermal/thermal_core.c22
-rw-r--r--drivers/thermal/thermal_core.h1
-rw-r--r--drivers/thermal/ti-soc-thermal/ti-thermal-common.c3
7 files changed, 26 insertions, 12 deletions
diff --git a/drivers/thermal/db8500_thermal.c b/drivers/thermal/db8500_thermal.c
index 20adfbe27df1..2fb273c4baa9 100644
--- a/drivers/thermal/db8500_thermal.c
+++ b/drivers/thermal/db8500_thermal.c
@@ -76,7 +76,7 @@ static int db8500_cdev_bind(struct thermal_zone_device *thermal,
upper = lower = i > max_state ? max_state : i;
ret = thermal_zone_bind_cooling_device(thermal, i, cdev,
- upper, lower);
+ upper, lower, THERMAL_WEIGHT_DEFAULT);
dev_info(&cdev->device, "%s bind to %d: %d-%s\n", cdev->type,
i, ret, ret ? "fail" : "succeed");
diff --git a/drivers/thermal/fair_share.c b/drivers/thermal/fair_share.c
index 6e0a3fbfae86..c3b25187b467 100644
--- a/drivers/thermal/fair_share.c
+++ b/drivers/thermal/fair_share.c
@@ -109,7 +109,7 @@ static int fair_share_throttle(struct thermal_zone_device *tz, int trip)
continue;
instance->target = get_target_state(tz, cdev,
- tzp->tbp[i].weight, cur_trip_level);
+ instance->weight, cur_trip_level);
instance->cdev->updated = false;
thermal_cdev_update(cdev);
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
index 2ccbc0788353..fde4c2876d14 100644
--- a/drivers/thermal/imx_thermal.c
+++ b/drivers/thermal/imx_thermal.c
@@ -306,7 +306,8 @@ static int imx_bind(struct thermal_zone_device *tz,
ret = thermal_zone_bind_cooling_device(tz, IMX_TRIP_PASSIVE, cdev,
THERMAL_NO_LIMIT,
- THERMAL_NO_LIMIT);
+ THERMAL_NO_LIMIT,
+ THERMAL_WEIGHT_DEFAULT);
if (ret) {
dev_err(&tz->device,
"binding zone %s with cdev %s failed:%d\n",
diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index 668fb1bdea9e..c606b85ea9f4 100644
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -227,7 +227,8 @@ static int of_thermal_bind(struct thermal_zone_device *thermal,
ret = thermal_zone_bind_cooling_device(thermal,
tbp->trip_id, cdev,
tbp->max,
- tbp->min);
+ tbp->min,
+ tbp->usage);
if (ret)
return ret;
}
@@ -581,7 +582,7 @@ static int thermal_of_populate_bind_params(struct device_node *np,
u32 prop;
/* Default weight. Usage is optional */
- __tbp->usage = 0;
+ __tbp->usage = THERMAL_WEIGHT_DEFAULT;
ret = of_property_read_u32(np, "contribution", &prop);
if (ret == 0)
__tbp->usage = prop;
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 4108db7e10c1..a6cb9b78b629 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -218,7 +218,8 @@ static void print_bind_err_msg(struct thermal_zone_device *tz,
static void __bind(struct thermal_zone_device *tz, int mask,
struct thermal_cooling_device *cdev,
- unsigned long *limits)
+ unsigned long *limits,
+ unsigned int weight)
{
int i, ret;
@@ -233,7 +234,8 @@ static void __bind(struct thermal_zone_device *tz, int mask,
upper = limits[i * 2 + 1];
}
ret = thermal_zone_bind_cooling_device(tz, i, cdev,
- upper, lower);
+ upper, lower,
+ weight);
if (ret)
print_bind_err_msg(tz, cdev, ret);
}
@@ -280,7 +282,8 @@ static void bind_cdev(struct thermal_cooling_device *cdev)
continue;
tzp->tbp[i].cdev = cdev;
__bind(pos, tzp->tbp[i].trip_mask, cdev,
- tzp->tbp[i].binding_limits);
+ tzp->tbp[i].binding_limits,
+ tzp->tbp[i].weight);
}
}
@@ -319,7 +322,8 @@ static void bind_tz(struct thermal_zone_device *tz)
continue;
tzp->tbp[i].cdev = pos;
__bind(tz, tzp->tbp[i].trip_mask, pos,
- tzp->tbp[i].binding_limits);
+ tzp->tbp[i].binding_limits,
+ tzp->tbp[i].weight);
}
}
exit:
@@ -713,7 +717,8 @@ passive_store(struct device *dev, struct device_attribute *attr,
thermal_zone_bind_cooling_device(tz,
THERMAL_TRIPS_NONE, cdev,
THERMAL_NO_LIMIT,
- THERMAL_NO_LIMIT);
+ THERMAL_NO_LIMIT,
+ THERMAL_WEIGHT_DEFAULT);
}
mutex_unlock(&thermal_list_lock);
if (!tz->passive_delay)
@@ -931,6 +936,9 @@ static const struct attribute_group *cooling_device_attr_groups[] = {
* @lower: the Minimum cooling state can be used for this trip point.
* THERMAL_NO_LIMIT means no lower limit,
* and the cooling device can be in cooling state 0.
+ * @weight: The weight of the cooling device to be bound to the
+ * thermal zone. Use THERMAL_WEIGHT_DEFAULT for the
+ * default value
*
* This interface function bind a thermal cooling device to the certain trip
* point of a thermal zone device.
@@ -941,7 +949,8 @@ static const struct attribute_group *cooling_device_attr_groups[] = {
int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
int trip,
struct thermal_cooling_device *cdev,
- unsigned long upper, unsigned long lower)
+ unsigned long upper, unsigned long lower,
+ unsigned int weight)
{
struct thermal_instance *dev;
struct thermal_instance *pos;
@@ -986,6 +995,7 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
dev->upper = upper;
dev->lower = lower;
dev->target = THERMAL_NO_TARGET;
+ dev->weight = weight;
result = get_idr(&tz->idr, &tz->lock, &dev->id);
if (result)
diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index 0531c752fbbb..7a465e9d456c 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -48,6 +48,7 @@ struct thermal_instance {
struct device_attribute attr;
struct list_head tz_node; /* node in tz->thermal_instances */
struct list_head cdev_node; /* node in cdev->thermal_instances */
+ unsigned int weight; /* The weight of the cooling device */
};
int thermal_register_governor(struct thermal_governor *);
diff --git a/drivers/thermal/ti-soc-thermal/ti-thermal-common.c b/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
index a38c1756442a..cb45e729adb5 100644
--- a/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
+++ b/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
@@ -146,7 +146,8 @@ static int ti_thermal_bind(struct thermal_zone_device *thermal,
return thermal_zone_bind_cooling_device(thermal, 0, cdev,
/* bind with min and max states defined by cpu_cooling */
THERMAL_NO_LIMIT,
- THERMAL_NO_LIMIT);
+ THERMAL_NO_LIMIT,
+ THERMAL_WEIGHT_DEFAULT);
}
/* Unbind callback functions for thermal zone */