diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_pm.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_pm.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c index 3fa6984d989..07579ae2ab6 100644 --- a/drivers/gpu/drm/radeon/radeon_pm.c +++ b/drivers/gpu/drm/radeon/radeon_pm.c @@ -27,6 +27,8 @@ #include <linux/acpi.h> #endif #include <linux/power_supply.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> #define RADEON_IDLE_LOOP_MS 100 #define RADEON_RECLOCK_DELAY_MS 200 @@ -424,6 +426,82 @@ fail: static DEVICE_ATTR(power_profile, S_IRUGO | S_IWUSR, radeon_get_pm_profile, radeon_set_pm_profile); static DEVICE_ATTR(power_method, S_IRUGO | S_IWUSR, radeon_get_pm_method, radeon_set_pm_method); +static ssize_t radeon_hwmon_show_temp(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev)); + struct radeon_device *rdev = ddev->dev_private; + u32 temp; + + switch (rdev->pm.int_thermal_type) { + case THERMAL_TYPE_RV6XX: + temp = rv6xx_get_temp(rdev); + break; + case THERMAL_TYPE_RV770: + temp = rv770_get_temp(rdev); + break; + case THERMAL_TYPE_EVERGREEN: + temp = evergreen_get_temp(rdev); + break; + default: + temp = 0; + break; + } + + return snprintf(buf, PAGE_SIZE, "%d\n", temp); +} + +static ssize_t radeon_hwmon_show_name(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return sprintf(buf, "radeon\n"); +} + +static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, radeon_hwmon_show_temp, NULL, 0); +static SENSOR_DEVICE_ATTR(name, S_IRUGO, radeon_hwmon_show_name, NULL, 0); + +static struct attribute *hwmon_attributes[] = { + &sensor_dev_attr_temp1_input.dev_attr.attr, + &sensor_dev_attr_name.dev_attr.attr, + NULL +}; + +static const struct attribute_group hwmon_attrgroup = { + .attrs = hwmon_attributes, +}; + +static void radeon_hwmon_init(struct radeon_device *rdev) +{ + int err; + + rdev->pm.int_hwmon_dev = NULL; + + switch (rdev->pm.int_thermal_type) { + case THERMAL_TYPE_RV6XX: + case THERMAL_TYPE_RV770: + case THERMAL_TYPE_EVERGREEN: + rdev->pm.int_hwmon_dev = hwmon_device_register(rdev->dev); + dev_set_drvdata(rdev->pm.int_hwmon_dev, rdev->ddev); + err = sysfs_create_group(&rdev->pm.int_hwmon_dev->kobj, + &hwmon_attrgroup); + if (err) + DRM_ERROR("Unable to create hwmon sysfs file: %d\n", err); + break; + default: + break; + } +} + +static void radeon_hwmon_fini(struct radeon_device *rdev) +{ + if (rdev->pm.int_hwmon_dev) { + sysfs_remove_group(&rdev->pm.int_hwmon_dev->kobj, &hwmon_attrgroup); + hwmon_device_unregister(rdev->pm.int_hwmon_dev); + } +} + void radeon_pm_suspend(struct radeon_device *rdev) { bool flush_wq = false; @@ -471,6 +549,7 @@ int radeon_pm_init(struct radeon_device *rdev) rdev->pm.dynpm_can_downclock = true; rdev->pm.current_sclk = rdev->clock.default_sclk; rdev->pm.current_mclk = rdev->clock.default_mclk; + rdev->pm.int_thermal_type = THERMAL_TYPE_NONE; if (rdev->bios) { if (rdev->is_atom_bios) @@ -481,6 +560,8 @@ int radeon_pm_init(struct radeon_device *rdev) radeon_pm_init_profile(rdev); } + /* set up the internal thermal sensor if applicable */ + radeon_hwmon_init(rdev); if (rdev->pm.num_power_states > 1) { /* where's the best place to put these? */ ret = device_create_file(rdev->dev, &dev_attr_power_profile); @@ -536,6 +617,7 @@ void radeon_pm_fini(struct radeon_device *rdev) #endif } + radeon_hwmon_fini(rdev); if (rdev->pm.i2c_bus) radeon_i2c_destroy(rdev->pm.i2c_bus); } |