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Subject[PATCH RESEND v12 4/4] drm/panel-simple: Read panel orientation
Date
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);
--
2.27.0
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