From 49869668ff0e3f380858b4c20b8d0cb02b933f48 Mon Sep 17 00:00:00 2001
From: Douglas Anderson <dianders@chromium.org>
Date: Fri, 3 May 2024 14:33:06 -0700
Subject: [PATCH] drm/panel: samsung-atna33xc20: Don't call unprepare+disable
at shutdown/remove
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@chromium.org
[2] https://lore.kernel.org/r/20230901234202.566951-1-dianders@chromium.org
[3] https://lore.kernel.org/r/20230921192749.1542462-1-dianders@chromium.org
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503143327.RFT.v2.25.Iaeacccf98e6cb729b8fc3a782725769cd66812ad@changeid
---
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 a322dd0a532fe..9a482a744b8c1 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)
--
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