The panel orientation needs to parsed from a device-tree and assigned to the panel's connector in order to make orientation property available to userspace. That's what this patch does for the panel-simple driver.
Signed-off-by: Dmitry Osipenko digetx@gmail.com --- drivers/gpu/drm/panel/panel-simple.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c index cb6550d37e85..6e3e99a30d85 100644 --- a/drivers/gpu/drm/panel/panel-simple.c +++ b/drivers/gpu/drm/panel/panel-simple.c @@ -112,6 +112,8 @@ struct panel_simple { struct gpio_desc *hpd_gpio;
struct drm_display_mode override_mode; + + enum drm_panel_orientation orientation; };
static inline struct panel_simple *to_panel_simple(struct drm_panel *panel) @@ -371,6 +373,9 @@ 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_connector_set_panel_orientation(connector, p->orientation); + return num; }
@@ -530,6 +535,12 @@ static int panel_simple_probe(struct device *dev, const struct panel_desc *desc) return err; }
+ err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation); + if (err) { + dev_err(dev, "failed to parse rotation property: %d\n", err); + return err; + } + ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0); if (ddc) { panel->ddc = of_find_i2c_adapter_by_node(ddc);