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drm/panel: sharp-lq101r1sx01: Don't call disable at shutdown/remove

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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 Tegra boards. The Tegra 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

Cc: Thierry Reding <treding@nvidia.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20240604172305.v3.18.I6a87fce1ee027c96f71c7adf74248b865f50b336@changeid
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240604172305.v3.18.I6a87fce1ee027c96f71c7adf74248b865f50b336@changeid
This commit is contained in:
Douglas Anderson 2024-06-04 17:23:04 -07:00 committed by Neil Armstrong
parent 316bb1473c
commit d7d473d846
1 changed files with 2 additions and 22 deletions
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24
drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c
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@ -357,32 +357,13 @@ static void sharp_panel_remove(struct mipi_dsi_device *dsi)
struct sharp_panel *sharp = mipi_dsi_get_drvdata(dsi);
int err;
/* only detach from host for the DSI-LINK2 interface */
if (!sharp) {
mipi_dsi_detach(dsi);
return;
}
err = drm_panel_disable(&sharp->base);
if (err < 0)
dev_err(&dsi->dev, "failed to disable panel: %d\n", err);
err = mipi_dsi_detach(dsi);
if (err < 0)
dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
sharp_panel_del(sharp);
}
static void sharp_panel_shutdown(struct mipi_dsi_device *dsi)
{
struct sharp_panel *sharp = mipi_dsi_get_drvdata(dsi);
/* nothing to do for DSI-LINK2 */
/* only detach from host for the DSI-LINK2 interface */
if (!sharp)
return;
drm_panel_disable(&sharp->base);
sharp_panel_del(sharp);
}
static struct mipi_dsi_driver sharp_panel_driver = {
@ -392,7 +373,6 @@ static struct mipi_dsi_driver sharp_panel_driver = {
},
.probe = sharp_panel_probe,
.remove = sharp_panel_remove,
.shutdown = sharp_panel_shutdown,
};
module_mipi_dsi_driver(sharp_panel_driver);