diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt
index 87519cb379ee45ade675499949ae91bf1051725d..7ec632ed976911d09bd564ddfbde51acafb2f6ee 100644
--- a/Documentation/thermal/sysfs-api.txt
+++ b/Documentation/thermal/sysfs-api.txt
@@ -95,7 +95,7 @@ temperature) and throttle appropriate devices.
1.3 interface for binding a thermal zone device with a thermal cooling device
1.3.1 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);
This interface function bind a thermal cooling device to the certain trip
point of a thermal zone device.
@@ -110,6 +110,8 @@ temperature) and throttle appropriate devices.
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 influence of this cooling device in this thermal
+ zone. See 1.4.1 below for more information.
1.3.2 int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
int trip, struct thermal_cooling_device *cdev);
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index d24fa1964eb8ff1e6195610f9e258cdd00f22b6c..6d4e44ea74acc8bff38f8be0aa7682f3d9560e3c 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -800,7 +800,8 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
result =
thermal_zone_bind_cooling_device
(thermal, trip, cdev,
- THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
+ THERMAL_NO_LIMIT, THERMAL_NO_LIMIT,
+ THERMAL_WEIGHT_DEFAULT);
else
result =
thermal_zone_unbind_cooling_device
@@ -824,7 +825,8 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
if (bind)
result = thermal_zone_bind_cooling_device
(thermal, trip, cdev,
- THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
+ THERMAL_NO_LIMIT, THERMAL_NO_LIMIT,
+ THERMAL_WEIGHT_DEFAULT);
else
result = thermal_zone_unbind_cooling_device
(thermal, trip, cdev);
@@ -841,7 +843,8 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
result = thermal_zone_bind_cooling_device
(thermal, THERMAL_TRIPS_NONE,
cdev, THERMAL_NO_LIMIT,
- THERMAL_NO_LIMIT);
+ THERMAL_NO_LIMIT,
+ THERMAL_WEIGHT_DEFAULT);
else
result = thermal_zone_unbind_cooling_device
(thermal, THERMAL_TRIPS_NONE,
diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
index 594c918b553d382fa06519d83a51274894644693..1ef02daddb60b81aeba3e627d0c7da5870d5248b 100644
--- a/drivers/platform/x86/acerhdf.c
+++ b/drivers/platform/x86/acerhdf.c
@@ -372,7 +372,8 @@ static int acerhdf_bind(struct thermal_zone_device *thermal,
return 0;
if (thermal_zone_bind_cooling_device(thermal, 0, cdev,
- THERMAL_NO_LIMIT, THERMAL_NO_LIMIT)) {
+ THERMAL_NO_LIMIT, THERMAL_NO_LIMIT,
+ THERMAL_WEIGHT_DEFAULT)) {
pr_err("error binding cooling dev\n");
return -EINVAL;
}
diff --git a/drivers/thermal/db8500_thermal.c b/drivers/thermal/db8500_thermal.c
index 20adfbe27df1748bc00e5563cce12828973c8881..2fb273c4baa95b5583052102d793d8b9d288ad44 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 6e0a3fbfae867f9ebab079a2d485677222a3e349..c3b25187b467556412b0b07bb4f5ab59ff7d6fe5 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 2ccbc0788353e9488e3f730de80d52ecafaf9082..fde4c2876d14612c2c3bef5fb0ed55fe78ea216c 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 668fb1bdea9eff9b0443453430f1de92335c4104..c606b85ea9f47bf08370db605625049f6750c8e1 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 4108db7e10c1094622d4abca08017db3125cf80e..a6cb9b78b6293bc7725e5859571d5528c3a7ef97 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 0531c752fbbb6680c40e939ad2a14fdc1830f357..7a465e9d456c84d7e1734379759025f271dd54b9 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 a38c1756442aa2611e0e207466aabba4e72b94cc..cb45e729adb55901472800f11c83e185406d2210 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 */
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 5eac316490eab9ca0ad1a864be2b6fedb823f332..00dacd4dfdce54998c210bc4f807d268d6a2aa69 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -40,6 +40,9 @@
/* No upper/lower limit requirement */
#define THERMAL_NO_LIMIT ((u32)~0)
+/* Default weight of a bound cooling device */
+#define THERMAL_WEIGHT_DEFAULT 0
+
/* Unit conversion macros */
#define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \
((long)t-2732+5)/10 : ((long)t-2732-5)/10)
@@ -323,7 +326,8 @@ void thermal_zone_device_unregister(struct thermal_zone_device *);
int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
struct thermal_cooling_device *,
- unsigned long, unsigned long);
+ unsigned long, unsigned long,
+ unsigned int);
int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
struct thermal_cooling_device *);
void thermal_zone_device_update(struct thermal_zone_device *);