[PATCH 2/7] drm/panel: sitronix-st7789v: add panel orientation support

[Gerald Loacker <gerald.loacker@wolfvision.net>]

From: Michael Riesch <michael.riesch@wolfvision.net>

Determine the orientation of the display based on the device tree and
propagate it.

Signed-off-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Gerald Loacker <gerald.loacker@wolfvision.net>
---
 .../gpu/drm/panel/panel-sitronix-st7789v.c    | 28 +++++++++++++++----
 1 file changed, 23 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
index 9535437271d3..5d4542c12f44 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
@@ -117,6 +117,7 @@ struct st7789v {
 	struct spi_device *spi;
 	struct gpio_desc *reset;
 	struct regulator *power;
+	enum drm_panel_orientation orientation;
 };
 
 enum st7789v_prefix {
@@ -171,6 +172,7 @@ static const struct drm_display_mode default_mode = {
 static int st7789v_get_modes(struct drm_panel *panel,
 			     struct drm_connector *connector)
 {
+	struct st7789v *ctx = panel_to_st7789v(panel);
 	struct drm_display_mode *mode;
 	u32 bus_format = MEDIA_BUS_FMT_RGB666_1X18;
 
@@ -193,9 +195,22 @@ static int st7789v_get_modes(struct drm_panel *panel,
 	drm_display_info_set_bus_formats(&connector->display_info, &bus_format,
 					 1);
 
+	/*
+	 * TODO: Remove once all drm drivers call
+	 * drm_connector_set_orientation_from_panel()
+	 */
+	drm_connector_set_panel_orientation(connector, ctx->orientation);
+
 	return 1;
 }
 
+static enum drm_panel_orientation st7789v_get_orientation(struct drm_panel *p)
+{
+	struct st7789v *ctx = panel_to_st7789v(p);
+
+	return ctx->orientation;
+}
+
 static int st7789v_prepare(struct drm_panel *panel)
 {
 	struct st7789v *ctx = panel_to_st7789v(panel);
@@ -351,11 +366,12 @@ static int st7789v_unprepare(struct drm_panel *panel)
 }
 
 static const struct drm_panel_funcs st7789v_drm_funcs = {
-	.disable	= st7789v_disable,
-	.enable		= st7789v_enable,
-	.get_modes	= st7789v_get_modes,
-	.prepare	= st7789v_prepare,
-	.unprepare	= st7789v_unprepare,
+	.disable = st7789v_disable,
+	.enable = st7789v_enable,
+	.get_modes = st7789v_get_modes,
+	.get_orientation = st7789v_get_orientation,
+	.prepare = st7789v_prepare,
+	.unprepare = st7789v_unprepare,
 };
 
 static int st7789v_probe(struct spi_device *spi)
@@ -387,6 +403,8 @@ static int st7789v_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
+	of_drm_get_panel_orientation(spi->dev.of_node, &ctx->orientation);
+
 	drm_panel_add(&ctx->panel);
 
 	return 0;
-- 
2.37.2