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

[Gerald Loacker]

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

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

Signed-off-by: Michael Riesch <michael.rie...@wolfvision.net>
Signed-off-by: Gerald Loacker <gerald.loac...@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