Parse the device tree rotation specifier, and set a DRM
connector orientation property. The property can then be read
by compositors to apply hardware plane rotation or a GPU transform.
Signed-off-by: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx>
---
drivers/gpu/drm/panel/panel-elida-kd35t133.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/panel/panel-elida-kd35t133.c b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
index fe5ac3ef9018..5987d28c874c 100644
--- a/drivers/gpu/drm/panel/panel-elida-kd35t133.c
+++ b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
@@ -39,6 +39,7 @@
struct kd35t133 {
struct device *dev;
struct drm_panel panel;
+ enum drm_panel_orientation orientation;
struct gpio_desc *reset_gpio;
struct regulator *vdd;
struct regulator *iovcc;
@@ -216,6 +217,7 @@ static int kd35t133_get_modes(struct drm_panel *panel,
connector->display_info.width_mm = mode->width_mm;
connector->display_info.height_mm = mode->height_mm;
drm_mode_probed_add(connector, mode);
+ drm_connector_set_panel_orientation(connector, ctx->orientation);
return 1;
}
@@ -258,6 +260,12 @@ static int kd35t133_probe(struct mipi_dsi_device *dsi)
return ret;
}
+ ret = of_drm_get_panel_orientation(dev->of_node, &ctx->orientation);
+ if (ret) {
+ dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, ret);
+ return ret;
+ }
+
mipi_dsi_set_drvdata(dsi, ctx);
ctx->dev = dev;
--
2.30.0
