[PATCH v2 3/4] drm: panel: Add orientation support for st7701

[Maya Matuszczyk <maccraft123mc@xxxxxxxxx>]

Note that this patch is 'heavily inspired' by orientation support in driver
for Elida KD35T133 panel

Signed-off-by: Maya Matuszczyk <maccraft123mc@xxxxxxxxx>
---
 drivers/gpu/drm/panel/panel-sitronix-st7701.c | 21 ++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7701.c b/drivers/gpu/drm/panel/panel-sitronix-st7701.c
index 660c3f435008..c9ae5c456f41 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7701.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7701.c
@@ -135,6 +135,7 @@ struct st7701 {
 	struct regulator_bulk_data supplies[2];
 	struct gpio_desc *reset;
 	unsigned int sleep_delay;
+	enum drm_panel_orientation orientation;
 };
 
 static inline struct st7701 *panel_to_st7701(struct drm_panel *panel)
@@ -514,15 +515,29 @@ static int st7701_get_modes(struct drm_panel *panel,
 	connector->display_info.width_mm = desc_mode->width_mm;
 	connector->display_info.height_mm = desc_mode->height_mm;
 
+	/*
+	 * TODO: Remove once all drm drivers call
+	 * drm_connector_set_orientation_from_panel()
+	 */
+	drm_connector_set_panel_orientation(connector, st7701->orientation);
+
 	return 1;
 }
 
+static enum drm_panel_orientation st7701_get_orientation(struct drm_panel *panel)
+{
+	struct st7701 *st7701 = panel_to_st7701(panel);
+
+	return st7701->orientation;
+}
+
 static const struct drm_panel_funcs st7701_funcs = {
 	.disable	= st7701_disable,
 	.unprepare	= st7701_unprepare,
 	.prepare	= st7701_prepare,
 	.enable		= st7701_enable,
 	.get_modes	= st7701_get_modes,
+	.get_orientation = st7701_get_orientation,
 };
 
 static const struct drm_display_mode ts8550b_mode = {
@@ -733,7 +748,7 @@ static const struct drm_display_mode kd50t048a_mode = {
 	.hsync_end      = 480 + 2 + 10,
 	.htotal         = 480 + 2 + 10 + 2,
 
-	.vdisplay       = 854, // was: 854 12 2 60
+	.vdisplay       = 854,
 	.vsync_start    = 854 + 2,
 	.vsync_end      = 854 + 2 + 2,
 	.vtotal         = 854 + 2 + 2 + 17,
@@ -854,6 +869,10 @@ static int st7701_dsi_probe(struct mipi_dsi_device *dsi)
 		return PTR_ERR(st7701->reset);
 	}
 
+	ret = of_drm_get_panel_orientation(dsi->dev.of_node, &st7701->orientation);
+	if (ret < 0)
+		return dev_err_probe(&dsi->dev, ret, "Failed to get orientation\n");
+
 	drm_panel_init(&st7701->panel, &dsi->dev, &st7701_funcs,
 		       DRM_MODE_CONNECTOR_DSI);
 
-- 
2.39.1