To return the orientation property to drm/kms driver.
Signed-off-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
v2->v3: add comments for notice.
---
drivers/gpu/drm/panel/panel-simple.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index a34f4198a534..82041cdb5478 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -411,7 +411,12 @@ static int panel_simple_get_modes(struct drm_panel *panel,
/* add hard-coded panel modes */
num += panel_simple_get_non_edid_modes(p, connector);
- /* set up connector's "panel orientation" property */
+ /*
+ * drm drivers are expected to call drm_panel_get_orientation() to get
+ * panel's orientation then drm_connector_set_panel_orientation() to
+ * set the property before drm_dev_register(). Otherwise there will be
+ * a WARN_ON if orientation is set after drm is registered.
+ */
drm_connector_set_panel_orientation(connector, p->orientation);
return num;
@@ -434,6 +439,14 @@ static int panel_simple_get_timings(struct drm_panel *panel,
return p->desc->num_timings;
}
+static enum drm_panel_orientation panel_simple_get_orientation(struct drm_panel *panel)
+{
+ struct panel_simple *p = to_panel_simple(panel);
+
+ return p->orientation;
+}
+
+
static const struct drm_panel_funcs panel_simple_funcs = {
.disable = panel_simple_disable,
.unprepare = panel_simple_unprepare,
@@ -441,6 +454,7 @@ static const struct drm_panel_funcs panel_simple_funcs = {
.enable = panel_simple_enable,
.get_modes = panel_simple_get_modes,
.get_timings = panel_simple_get_timings,
+ .get_orientation = panel_simple_get_orientation,
};
static struct panel_desc panel_dpi;
--
2.36.1.255.ge46751e96f-goog
