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drm/imx/dcss: Call drm_atomic_helper_shutdown() at shutdown time

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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>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Tested-by: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>
Reviewed-by: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230921122641.RFT.v2.1.I134336fce7eac5a63bdac46d57b0888858fc8081@changeid
This commit is contained in:
Douglas Anderson 2023-09-21 12:26:44 -07:00
parent 330140d731
commit 89755ee1d5
3 changed files with 16 additions and 0 deletions
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8
drivers/gpu/drm/imx/dcss/dcss-drv.c
View File

@ -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,

7
drivers/gpu/drm/imx/dcss/dcss-kms.c
View File

@ -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);
}

1
drivers/gpu/drm/imx/dcss/dcss-kms.h
View File

@ -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,