drm/panel: osd-osd101t2587-53ts: 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 TI OMAP boards. The OMAP 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: Peter Ujfalusi <peter.ujfalusi@ti.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.v3.8.Ic533ce1323b94230d4155f9364c2b7c1bc47e798@changeid
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240604172305.v3.8.Ic533ce1323b94230d4155f9364c2b7c1bc47e798@changeid

diff --git a/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c b/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c
index c0da7d9512e88b6c6e6535755cb4a884fabaa293..dbea84f515142dbf77236552643bb0e4546d0ca8 100644 (file)
--- a/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c
+++ b/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c
@@ -186,11 +186,6 @@ static void osd101t2587_panel_remove(struct mipi_dsi_device *dsi)
        struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi);
        int ret;
 
-       ret = drm_panel_disable(&osd101t2587->base);
-       if (ret < 0)
-               dev_warn(&dsi->dev, "failed to disable panel: %d\n", ret);
-
-       drm_panel_unprepare(&osd101t2587->base);
        drm_panel_remove(&osd101t2587->base);
 
        ret = mipi_dsi_detach(dsi);
@@ -198,14 +193,6 @@ static void osd101t2587_panel_remove(struct mipi_dsi_device *dsi)
                dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
 }
 
-static void osd101t2587_panel_shutdown(struct mipi_dsi_device *dsi)
-{
-       struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi);
-
-       drm_panel_disable(&osd101t2587->base);
-       drm_panel_unprepare(&osd101t2587->base);
-}
-
 static struct mipi_dsi_driver osd101t2587_panel_driver = {
        .driver = {
                .name = "panel-osd-osd101t2587-53ts",
@@ -213,7 +200,6 @@ static struct mipi_dsi_driver osd101t2587_panel_driver = {
        },
        .probe = osd101t2587_panel_probe,
        .remove = osd101t2587_panel_remove,
-       .shutdown = osd101t2587_panel_shutdown,
 };
 module_mipi_dsi_driver(osd101t2587_panel_driver);