Allow the user to specify -2 as auto enabled with displays. By default we don't enter runtime suspend when there are displays attached because it does not work well in some desktop environments due to the driver sending hotplug events on resume in case any new displays were attached while the GPU was powered down. Some users still want this functionality though, so this lets you enable it.
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2428 Signed-off-by: Alex Deucher <alexander.deuc...@amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 37 +++++++++++++------------ 1 file changed, 20 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 62cca1edcc32..0d9adcc4a4e3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -350,8 +350,9 @@ module_param_named(aspm, amdgpu_aspm, int, 0444); * Override for runtime power management control for dGPUs. The amdgpu driver can dynamically power down * the dGPUs when they are idle if supported. The default is -1 (auto enable). * Setting the value to 0 disables this functionality. + * Setting the value to -2 is auto enabled with power down when displays are attached. */ -MODULE_PARM_DESC(runpm, "PX runtime pm (2 = force enable with BAMACO, 1 = force enable with BACO, 0 = disable, -1 = auto)"); +MODULE_PARM_DESC(runpm, "PX runtime pm (2 = force enable with BAMACO, 1 = force enable with BACO, 0 = disable, -1 = auto, -2 = autowith displays)"); module_param_named(runpm, amdgpu_runtime_pm, int, 0444); /** @@ -2649,24 +2650,26 @@ static int amdgpu_runtime_idle_check_display(struct device *dev) struct drm_connector_list_iter iter; int ret = 0; - /* XXX: Return busy if any displays are connected to avoid - * possible display wakeups after runtime resume due to - * hotplug events in case any displays were connected while - * the GPU was in suspend. Remove this once that is fixed. - */ - mutex_lock(&drm_dev->mode_config.mutex); - drm_connector_list_iter_begin(drm_dev, &iter); - drm_for_each_connector_iter(list_connector, &iter) { - if (list_connector->status == connector_status_connected) { - ret = -EBUSY; - break; + if (amdgpu_runtime_pm != -2) { + /* XXX: Return busy if any displays are connected to avoid + * possible display wakeups after runtime resume due to + * hotplug events in case any displays were connected while + * the GPU was in suspend. Remove this once that is fixed. + */ + mutex_lock(&drm_dev->mode_config.mutex); + drm_connector_list_iter_begin(drm_dev, &iter); + drm_for_each_connector_iter(list_connector, &iter) { + if (list_connector->status == connector_status_connected) { + ret = -EBUSY; + break; + } } - } - drm_connector_list_iter_end(&iter); - mutex_unlock(&drm_dev->mode_config.mutex); + drm_connector_list_iter_end(&iter); + mutex_unlock(&drm_dev->mode_config.mutex); - if (ret) - return ret; + if (ret) + return ret; + } if (adev->dc_enabled) { struct drm_crtc *crtc; -- 2.40.1
