drm/panel: st7703: Add Panel Rotation Support

Add support for panel rotation to ST7703 based devices.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240212184950.52210-5-macroalpha82@gmail.com

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index 939ba05c9b58cdcc00ec95f42a3342811dfd419c..a3e142f156d5b7389ad27491df81bf4958aff49c 100644 (file)
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -62,6 +62,7 @@ struct st7703 {
 
        struct dentry *debugfs;
        const struct st7703_panel_desc *desc;
+       enum drm_panel_orientation orientation;
 };
 
 struct st7703_panel_desc {
@@ -743,12 +744,20 @@ static int st7703_get_modes(struct drm_panel *panel,
        return 1;
 }
 
+static enum drm_panel_orientation st7703_get_orientation(struct drm_panel *panel)
+{
+       struct st7703 *st7703 = panel_to_st7703(panel);
+
+       return st7703->orientation;
+}
+
 static const struct drm_panel_funcs st7703_drm_funcs = {
        .disable   = st7703_disable,
        .unprepare = st7703_unprepare,
        .prepare   = st7703_prepare,
        .enable    = st7703_enable,
        .get_modes = st7703_get_modes,
+       .get_orientation = st7703_get_orientation,
 };
 
 static int allpixelson_set(void *data, u64 val)
@@ -817,6 +826,10 @@ static int st7703_probe(struct mipi_dsi_device *dsi)
                return dev_err_probe(dev, PTR_ERR(ctx->iovcc),
                                     "Failed to request iovcc regulator\n");
 
+       ret = of_drm_get_panel_orientation(dsi->dev.of_node, &ctx->orientation);
+       if (ret < 0)
+               return dev_err_probe(&dsi->dev, ret, "Failed to get orientation\n");
+
        drm_panel_init(&ctx->panel, dev, &st7703_drm_funcs,
                       DRM_MODE_CONNECTOR_DSI);