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drm/amdgpu: Enter low power state if CRTC active. 

CRTC in DPMS state off calls for low power state entry.
Support both atomic mode setting and pre-atomic mode setting.

v2: move comment

Acked-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andrey Grodzovsky 2019-12-12 17:04:41 -05:00 committed by Alex Deucher
parent aec0f262f3
commit 97f6a21bfa
1 changed files with 38 additions and 7 deletions
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45
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
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@ -1299,24 +1299,55 @@ static int amdgpu_pmops_runtime_idle(struct device *dev)
{
struct drm_device *drm_dev = dev_get_drvdata(dev);
struct amdgpu_device *adev = drm_dev->dev_private;
struct drm_crtc *crtc;
/* we don't want the main rpm_idle to call suspend - we want to autosuspend */
int ret = 1;
if (!adev->runpm) {
pm_runtime_forbid(dev);
return -EBUSY;
}
list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head) {
if (crtc->enabled) {
DRM_DEBUG_DRIVER("failing to power off - crtc active\n");
return -EBUSY;
if (amdgpu_device_has_dc_support(adev)) {
struct drm_crtc *crtc;
drm_modeset_lock_all(drm_dev);
drm_for_each_crtc(crtc, drm_dev) {
if (crtc->state->active) {
ret = -EBUSY;
break;
}
}
drm_modeset_unlock_all(drm_dev);
} else {
struct drm_connector *list_connector;
struct drm_connector_list_iter iter;
mutex_lock(&drm_dev->mode_config.mutex);
drm_modeset_lock(&drm_dev->mode_config.connection_mutex, NULL);
drm_connector_list_iter_begin(drm_dev, &iter);
drm_for_each_connector_iter(list_connector, &iter) {
if (list_connector->dpms == DRM_MODE_DPMS_ON) {
ret = -EBUSY;
break;
}
}
drm_connector_list_iter_end(&iter);
drm_modeset_unlock(&drm_dev->mode_config.connection_mutex);
mutex_unlock(&drm_dev->mode_config.mutex);
}
if (ret == -EBUSY)
DRM_DEBUG_DRIVER("failing to power off - crtc active\n");
pm_runtime_mark_last_busy(dev);
pm_runtime_autosuspend(dev);
/* we don't want the main rpm_idle to call suspend - we want to autosuspend */
return 1;
return ret;
}
long amdgpu_drm_ioctl(struct file *filp,