diff options
Diffstat (limited to 'drivers/gpu/drm/radeon')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon.h | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_pm.c | 52 |
2 files changed, 62 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 08cececb376d..b4681313646c 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -1335,6 +1335,12 @@ enum radeon_pcie_gen { RADEON_PCIE_GEN_INVALID = 0xffff }; +enum radeon_dpm_forced_level { + RADEON_DPM_FORCED_LEVEL_AUTO = 0, + RADEON_DPM_FORCED_LEVEL_LOW = 1, + RADEON_DPM_FORCED_LEVEL_HIGH = 2, +}; + struct radeon_dpm { struct radeon_ps *ps; /* number of valid power states */ @@ -1374,6 +1380,8 @@ struct radeon_dpm { bool uvd_active; /* thermal handling */ struct radeon_dpm_thermal thermal; + /* forced levels */ + enum radeon_dpm_forced_level forced_level; }; void radeon_dpm_enable_power_state(struct radeon_device *rdev, @@ -1669,6 +1677,7 @@ struct radeon_asic { u32 (*get_mclk)(struct radeon_device *rdev, bool low); void (*print_power_state)(struct radeon_device *rdev, struct radeon_ps *ps); void (*debugfs_print_current_performance_level)(struct radeon_device *rdev, struct seq_file *m); + int (*force_performance_level)(struct radeon_device *rdev, enum radeon_dpm_forced_level level); } dpm; /* pageflipping */ struct { @@ -2436,6 +2445,7 @@ void radeon_ring_write(struct radeon_ring *ring, uint32_t v); #define radeon_dpm_get_mclk(rdev, l) rdev->asic->dpm.get_mclk((rdev), (l)) #define radeon_dpm_print_power_state(rdev, ps) rdev->asic->dpm.print_power_state((rdev), (ps)) #define radeon_dpm_debugfs_print_current_performance_level(rdev, m) rdev->asic->dpm.debugfs_print_current_performance_level((rdev), (m)) +#define radeon_dpm_force_performance_level(rdev, l) rdev->asic->dpm.force_performance_level((rdev), (l)) /* Common functions */ /* AGP */ diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c index aaafb931922f..2557e8bab5cc 100644 --- a/drivers/gpu/drm/radeon/radeon_pm.c +++ b/drivers/gpu/drm/radeon/radeon_pm.c @@ -468,9 +468,57 @@ fail: return count; } +static ssize_t radeon_get_dpm_forced_performance_level(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; + enum radeon_dpm_forced_level level = rdev->pm.dpm.forced_level; + + return snprintf(buf, PAGE_SIZE, "%s\n", + (level == RADEON_DPM_FORCED_LEVEL_AUTO) ? "auto" : + (level == RADEON_DPM_FORCED_LEVEL_LOW) ? "low" : "high"); +} + +static ssize_t radeon_set_dpm_forced_performance_level(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev)); + struct radeon_device *rdev = ddev->dev_private; + enum radeon_dpm_forced_level level; + int ret = 0; + + mutex_lock(&rdev->pm.mutex); + if (strncmp("low", buf, strlen("low")) == 0) { + level = RADEON_DPM_FORCED_LEVEL_LOW; + } else if (strncmp("high", buf, strlen("high")) == 0) { + level = RADEON_DPM_FORCED_LEVEL_HIGH; + } else if (strncmp("auto", buf, strlen("auto")) == 0) { + level = RADEON_DPM_FORCED_LEVEL_AUTO; + } else { + mutex_unlock(&rdev->pm.mutex); + count = -EINVAL; + goto fail; + } + if (rdev->asic->dpm.force_performance_level) { + ret = radeon_dpm_force_performance_level(rdev, level); + if (ret) + count = -EINVAL; + } + mutex_unlock(&rdev->pm.mutex); +fail: + return count; +} + 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 DEVICE_ATTR(power_dpm_state, S_IRUGO | S_IWUSR, radeon_get_dpm_state, radeon_set_dpm_state); +static DEVICE_ATTR(power_dpm_force_performance_level, S_IRUGO | S_IWUSR, + radeon_get_dpm_forced_performance_level, + radeon_set_dpm_forced_performance_level); static ssize_t radeon_hwmon_show_temp(struct device *dev, struct device_attribute *attr, @@ -1066,6 +1114,9 @@ static int radeon_pm_init_dpm(struct radeon_device *rdev) ret = device_create_file(rdev->dev, &dev_attr_power_dpm_state); if (ret) DRM_ERROR("failed to create device file for dpm state\n"); + ret = device_create_file(rdev->dev, &dev_attr_power_dpm_force_performance_level); + if (ret) + DRM_ERROR("failed to create device file for dpm state\n"); /* XXX: these are noops for dpm but are here for backwards compat */ ret = device_create_file(rdev->dev, &dev_attr_power_profile); if (ret) @@ -1170,6 +1221,7 @@ static void radeon_pm_fini_dpm(struct radeon_device *rdev) mutex_unlock(&rdev->pm.mutex); device_remove_file(rdev->dev, &dev_attr_power_dpm_state); + device_remove_file(rdev->dev, &dev_attr_power_dpm_force_performance_level); /* XXX backwards compat */ device_remove_file(rdev->dev, &dev_attr_power_profile); device_remove_file(rdev->dev, &dev_attr_power_method); |