1 files changed, 7 insertions, 46 deletions

diff --git a/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c b/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c
index 493e0504f6f7..2334b77f348c 100644
--- a/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c
+++ b/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c
@@ -21,9 +21,6 @@ struct osd101t2587_panel {
 
 	struct regulator *supply;
 
-	bool prepared;
-	bool enabled;
-
 	const struct drm_display_mode *default_mode;
 };
 
@@ -37,13 +34,8 @@ static int osd101t2587_panel_disable(struct drm_panel *panel)
 	struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
 	int ret;
 
-	if (!osd101t2587->enabled)
-		return 0;
-
 	ret = mipi_dsi_shutdown_peripheral(osd101t2587->dsi);
 
-	osd101t2587->enabled = false;
-
 	return ret;
 }
 
@@ -51,11 +43,7 @@ static int osd101t2587_panel_unprepare(struct drm_panel *panel)
 {
 	struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
 
-	if (!osd101t2587->prepared)
-		return 0;
-
 	regulator_disable(osd101t2587->supply);
-	osd101t2587->prepared = false;
 
 	return 0;
 }
@@ -63,16 +51,8 @@ static int osd101t2587_panel_unprepare(struct drm_panel *panel)
 static int osd101t2587_panel_prepare(struct drm_panel *panel)
 {
 	struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
-	int ret;
 
-	if (osd101t2587->prepared)
-		return 0;
-
-	ret = regulator_enable(osd101t2587->supply);
-	if (!ret)
-		osd101t2587->prepared = true;
-
-	return ret;
+	return regulator_enable(osd101t2587->supply);
 }
 
 static int osd101t2587_panel_enable(struct drm_panel *panel)
@@ -80,15 +60,10 @@ static int osd101t2587_panel_enable(struct drm_panel *panel)
 	struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
 	int ret;
 
-	if (osd101t2587->enabled)
-		return 0;
-
 	ret = mipi_dsi_turn_on_peripheral(osd101t2587->dsi);
 	if (ret)
 		return ret;
 
-	osd101t2587->enabled = true;
-
 	return ret;
 }
 
@@ -157,9 +132,6 @@ static int osd101t2587_panel_add(struct osd101t2587_panel *osd101t2587)
 	if (IS_ERR(osd101t2587->supply))
 		return PTR_ERR(osd101t2587->supply);
 
-	drm_panel_init(&osd101t2587->base, &osd101t2587->dsi->dev,
-		       &osd101t2587_panel_funcs, DRM_MODE_CONNECTOR_DSI);
-
 	ret = drm_panel_of_backlight(&osd101t2587->base);
 	if (ret)
 		return ret;
@@ -186,9 +158,12 @@ static int osd101t2587_panel_probe(struct mipi_dsi_device *dsi)
 			  MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
 			  MIPI_DSI_MODE_NO_EOT_PACKET;
 
-	osd101t2587 = devm_kzalloc(&dsi->dev, sizeof(*osd101t2587), GFP_KERNEL);
-	if (!osd101t2587)
-		return -ENOMEM;
+	osd101t2587 = devm_drm_panel_alloc(&dsi->dev, __typeof(*osd101t2587), base,
+					   &osd101t2587_panel_funcs,
+					   DRM_MODE_CONNECTOR_DSI);
+
+	if (IS_ERR(osd101t2587))
+		return PTR_ERR(osd101t2587);
 
 	mipi_dsi_set_drvdata(dsi, osd101t2587);
 
@@ -211,11 +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);
@@ -223,14 +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",
@@ -238,7 +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);