[PATCH v2 2/3] drm/panel: sitronix-st7789v: add panel orientation support

[Michael Riesch]

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

Reviewed-by: Neil Armstrong <neil.armstr...@linaro.org>
Signed-off-by: Michael Riesch <michael.rie...@wolfvision.net>
---
 drivers/gpu/drm/panel/panel-sitronix-st7789v.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c 
b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
index c7cbfe6ca82c..6575f07d49e3 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
@@ -116,6 +116,7 @@ struct st7789v {
        struct spi_device *spi;
        struct gpio_desc *reset;
        struct regulator *power;
+       enum drm_panel_orientation orientation;
 };
 
 enum st7789v_prefix {
@@ -170,6 +171,7 @@ 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;
 
        mode = drm_mode_duplicate(connector->dev, &default_mode);
@@ -188,9 +190,22 @@ static int st7789v_get_modes(struct drm_panel *panel,
        connector->display_info.width_mm = 61;
        connector->display_info.height_mm = 103;
 
+       /*
+        * 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);
@@ -349,6 +364,7 @@ static const struct drm_panel_funcs st7789v_drm_funcs = {
        .disable = st7789v_disable,
        .enable = st7789v_enable,
        .get_modes = st7789v_get_modes,
+       .get_orientation = st7789v_get_orientation,
        .prepare = st7789v_prepare,
        .unprepare = st7789v_unprepare,
 };
@@ -382,6 +398,8 @@ 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