It's the responsibility of a correctly written DRM modeset driver to call drm_atomic_helper_shutdown() at shutdown time and that should be disabling / unpreparing the panel if needed. Panel drivers shouldn't be calling these functions themselves. A recent effort was made to fix as many DRM modeset drivers as possible [1] [2] [3] and most drivers are fixed now. A grep through mainline for compatible strings used by this driver indicates that it is used by Qualcomm boards. The Qualcomm driver appears to be correctly calling drm_atomic_helper_shutdown() so we can remove the calls. [1] https://lore.kernel.org/r/20230901234015.566018-1-dianders@xxxxxxxxxxxx [2] https://lore.kernel.org/r/20230901234202.566951-1-dianders@xxxxxxxxxxxx [3] https://lore.kernel.org/r/20230921192749.1542462-1-dianders@xxxxxxxxxxxx Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx> --- Changes in v2: - Only handle 1 panel per patch. - Split removal of prepared/enabled from handling of remove/shutdown. drivers/gpu/drm/panel/panel-samsung-atna33xc20.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c b/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c index a322dd0a532f..9a482a744b8c 100644 --- a/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c +++ b/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c @@ -327,21 +327,10 @@ static void atana33xc20_remove(struct dp_aux_ep_device *aux_ep) struct atana33xc20_panel *panel = dev_get_drvdata(dev); drm_panel_remove(&panel->base); - drm_panel_disable(&panel->base); - drm_panel_unprepare(&panel->base); drm_edid_free(panel->drm_edid); } -static void atana33xc20_shutdown(struct dp_aux_ep_device *aux_ep) -{ - struct device *dev = &aux_ep->dev; - struct atana33xc20_panel *panel = dev_get_drvdata(dev); - - drm_panel_disable(&panel->base); - drm_panel_unprepare(&panel->base); -} - static const struct of_device_id atana33xc20_dt_match[] = { { .compatible = "samsung,atna33xc20", }, { /* sentinal */ } @@ -362,7 +351,6 @@ static struct dp_aux_ep_driver atana33xc20_driver = { }, .probe = atana33xc20_probe, .remove = atana33xc20_remove, - .shutdown = atana33xc20_shutdown, }; static int __init atana33xc20_init(void) -- 2.45.0.rc1.225.g2a3ae87e7f-goog
