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authorMatthew Garrett <mjg59@srcf.ucam.org>2008-11-27 20:48:13 +0300
committerLen Brown <len.brown@intel.com>2009-02-20 18:52:37 +0300
commit6503e5df08008b9a47022b5e9ebba658c8fa69af (patch)
tree8ef36d1b85d2a03ac9e61f5074d717b67f9259ba /drivers/thermal
parentd2f8d7ee1a9b4650b4e43325b321801264f7c37a (diff)
downloadlinux-6503e5df08008b9a47022b5e9ebba658c8fa69af.tar.xz
thermal: use integers rather than strings for thermal values
The thermal API currently uses strings to pass values to userspace. This makes it difficult to use from within the kernel. Change the interface to use integers and fix up the consumers. Signed-off-by: Matthew Garrett <mjg@redhat.com> Acked-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/thermal')
-rw-r--r--drivers/thermal/thermal_sys.c91
1 files changed, 78 insertions, 13 deletions
diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
index 8171ca17b936..bd139adc6d32 100644
--- a/drivers/thermal/thermal_sys.c
+++ b/drivers/thermal/thermal_sys.c
@@ -104,22 +104,36 @@ static ssize_t
temp_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct thermal_zone_device *tz = to_thermal_zone(dev);
+ long temperature;
+ int ret;
if (!tz->ops->get_temp)
return -EPERM;
- return tz->ops->get_temp(tz, buf);
+ ret = tz->ops->get_temp(tz, &temperature);
+
+ if (ret)
+ return ret;
+
+ return sprintf(buf, "%ld\n", temperature);
}
static ssize_t
mode_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct thermal_zone_device *tz = to_thermal_zone(dev);
+ enum thermal_device_mode mode;
+ int result;
if (!tz->ops->get_mode)
return -EPERM;
- return tz->ops->get_mode(tz, buf);
+ result = tz->ops->get_mode(tz, &mode);
+ if (result)
+ return result;
+
+ return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ? "enabled"
+ : "disabled");
}
static ssize_t
@@ -132,7 +146,13 @@ mode_store(struct device *dev, struct device_attribute *attr,
if (!tz->ops->set_mode)
return -EPERM;
- result = tz->ops->set_mode(tz, buf);
+ if (!strncmp(buf, "enabled", sizeof("enabled")))
+ result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED);
+ else if (!strncmp(buf, "disabled", sizeof("disabled")))
+ result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED);
+ else
+ result = -EINVAL;
+
if (result)
return result;
@@ -144,7 +164,8 @@ trip_point_type_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct thermal_zone_device *tz = to_thermal_zone(dev);
- int trip;
+ enum thermal_trip_type type;
+ int trip, result;
if (!tz->ops->get_trip_type)
return -EPERM;
@@ -152,7 +173,22 @@ trip_point_type_show(struct device *dev, struct device_attribute *attr,
if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
return -EINVAL;
- return tz->ops->get_trip_type(tz, trip, buf);
+ result = tz->ops->get_trip_type(tz, trip, &type);
+ if (result)
+ return result;
+
+ switch (type) {
+ case THERMAL_TRIP_CRITICAL:
+ return sprintf(buf, "critical");
+ case THERMAL_TRIP_HOT:
+ return sprintf(buf, "hot");
+ case THERMAL_TRIP_PASSIVE:
+ return sprintf(buf, "passive");
+ case THERMAL_TRIP_ACTIVE:
+ return sprintf(buf, "active");
+ default:
+ return sprintf(buf, "unknown");
+ }
}
static ssize_t
@@ -160,7 +196,8 @@ trip_point_temp_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct thermal_zone_device *tz = to_thermal_zone(dev);
- int trip;
+ int trip, ret;
+ long temperature;
if (!tz->ops->get_trip_temp)
return -EPERM;
@@ -168,7 +205,12 @@ trip_point_temp_show(struct device *dev, struct device_attribute *attr,
if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
return -EINVAL;
- return tz->ops->get_trip_temp(tz, trip, buf);
+ ret = tz->ops->get_trip_temp(tz, trip, &temperature);
+
+ if (ret)
+ return ret;
+
+ return sprintf(buf, "%ld\n", temperature);
}
static DEVICE_ATTR(type, 0444, type_show, NULL);
@@ -236,8 +278,13 @@ thermal_cooling_device_max_state_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct thermal_cooling_device *cdev = to_cooling_device(dev);
+ unsigned long state;
+ int ret;
- return cdev->ops->get_max_state(cdev, buf);
+ ret = cdev->ops->get_max_state(cdev, &state);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%ld\n", state);
}
static ssize_t
@@ -245,8 +292,13 @@ thermal_cooling_device_cur_state_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct thermal_cooling_device *cdev = to_cooling_device(dev);
+ unsigned long state;
+ int ret;
- return cdev->ops->get_cur_state(cdev, buf);
+ ret = cdev->ops->get_cur_state(cdev, &state);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%ld\n", state);
}
static ssize_t
@@ -255,10 +307,10 @@ thermal_cooling_device_cur_state_store(struct device *dev,
const char *buf, size_t count)
{
struct thermal_cooling_device *cdev = to_cooling_device(dev);
- int state;
+ unsigned long state;
int result;
- if (!sscanf(buf, "%d\n", &state))
+ if (!sscanf(buf, "%ld\n", &state))
return -EINVAL;
if (state < 0)
@@ -312,13 +364,20 @@ static DEVICE_ATTR(name, 0444, name_show, NULL);
static ssize_t
temp_input_show(struct device *dev, struct device_attribute *attr, char *buf)
{
+ long temperature;
+ int ret;
struct thermal_hwmon_attr *hwmon_attr
= container_of(attr, struct thermal_hwmon_attr, attr);
struct thermal_zone_device *tz
= container_of(hwmon_attr, struct thermal_zone_device,
temp_input);
- return tz->ops->get_temp(tz, buf);
+ ret = tz->ops->get_temp(tz, &temperature);
+
+ if (ret)
+ return ret;
+
+ return sprintf(buf, "%ld\n", temperature);
}
static ssize_t
@@ -330,8 +389,14 @@ temp_crit_show(struct device *dev, struct device_attribute *attr,
struct thermal_zone_device *tz
= container_of(hwmon_attr, struct thermal_zone_device,
temp_crit);
+ long temperature;
+ int ret;
+
+ ret = tz->ops->get_trip_temp(tz, 0, &temperature);
+ if (ret)
+ return ret;
- return tz->ops->get_trip_temp(tz, 0, buf);
+ return sprintf(buf, "%ld\n", temperature);
}