@@ -92,6 +92,13 @@ static int dcss_drv_platform_remove(struct platform_device *pdev)
return 0;
}
+static void dcss_drv_platform_shutdown(struct platform_device *pdev)
+{
+ struct dcss_drv *mdrv = dev_get_drvdata(&pdev->dev);
+
+ dcss_kms_shutdown(mdrv->kms);
+}
+
static struct dcss_type_data dcss_types[] = {
[DCSS_IMX8MQ] = {
.name = "DCSS_IMX8MQ",
@@ -114,6 +121,7 @@ MODULE_DEVICE_TABLE(of, dcss_of_match);
static struct platform_driver dcss_platform_driver = {
.probe = dcss_drv_platform_probe,
.remove = dcss_drv_platform_remove,
+ .shutdown = dcss_drv_platform_shutdown,
.driver = {
.name = "imx-dcss",
.of_match_table = dcss_of_match,
@@ -172,3 +172,10 @@ void dcss_kms_detach(struct dcss_kms_dev *kms)
dcss_crtc_deinit(&kms->crtc, drm);
drm->dev_private = NULL;
}
+
+void dcss_kms_shutdown(struct dcss_kms_dev *kms)
+{
+ struct drm_device *drm = &kms->base;
+
+ drm_atomic_helper_shutdown(drm);
+}
@@ -34,6 +34,7 @@ struct dcss_kms_dev {
struct dcss_kms_dev *dcss_kms_attach(struct dcss_dev *dcss);
void dcss_kms_detach(struct dcss_kms_dev *kms);
+void dcss_kms_shutdown(struct dcss_kms_dev *kms);
int dcss_crtc_init(struct dcss_crtc *crtc, struct drm_device *drm);
void dcss_crtc_deinit(struct dcss_crtc *crtc, struct drm_device *drm);
struct dcss_plane *dcss_plane_init(struct drm_device *drm,
Based on grepping through the source code this driver appears to be missing a call to drm_atomic_helper_shutdown() at system shutdown time. Among other things, this means that if a panel is in use that it won't be cleanly powered off at system shutdown time. The fact that we should call drm_atomic_helper_shutdown() in the case of OS shutdown/restart comes straight out of the kernel doc "driver instance overview" in drm_drv.c. Suggested-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Douglas Anderson <dianders@chromium.org> --- This commit is only compile-time tested. drivers/gpu/drm/imx/dcss/dcss-drv.c | 8 ++++++++ drivers/gpu/drm/imx/dcss/dcss-kms.c | 7 +++++++ drivers/gpu/drm/imx/dcss/dcss-kms.h | 1 + 3 files changed, 16 insertions(+)