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Subject[PATCH v4 3/8] drm/panel: panel-edp: Implement .get_orientation callback
Date
To return the orientation property to drm/kms driver.

Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
---
drivers/gpu/drm/panel/panel-edp.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-edp.c b/drivers/gpu/drm/panel/panel-edp.c
index c96014464355..c0a43bc7d24a 100644
--- a/drivers/gpu/drm/panel/panel-edp.c
+++ b/drivers/gpu/drm/panel/panel-edp.c
@@ -586,7 +586,12 @@ static int panel_edp_get_modes(struct drm_panel *panel,
else if (!num)
dev_warn(p->base.dev, "No display modes\n");

- /* 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;
@@ -609,6 +614,13 @@ static int panel_edp_get_timings(struct drm_panel *panel,
return p->desc->num_timings;
}

+static enum drm_panel_orientation panel_edp_get_orientation(struct drm_panel *panel)
+{
+ struct panel_edp *p = to_panel_edp(panel);
+
+ return p->orientation;
+}
+
static int detected_panel_show(struct seq_file *s, void *data)
{
struct drm_panel *panel = s->private;
@@ -637,6 +649,7 @@ static const struct drm_panel_funcs panel_edp_funcs = {
.prepare = panel_edp_prepare,
.enable = panel_edp_enable,
.get_modes = panel_edp_get_modes,
+ .get_orientation = panel_edp_get_orientation,
.get_timings = panel_edp_get_timings,
.debugfs_init = panel_edp_debugfs_init,
};
--
2.36.1.255.ge46751e96f-goog
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