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Subject[RFC PATCH 2/3] drm: bridge: panel: allow override of the bus format
Date
Useful if the bridge does some kind of conversion of the bus format.

Signed-off-by: Peter Rosin <peda@axentia.se>
---
drivers/gpu/drm/bridge/panel.c | 22 +++++++++++++++++++++-
include/drm/drm_bridge.h | 1 +
2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/panel.c b/drivers/gpu/drm/bridge/panel.c
index 6d99d4a3beb3..ccef0283ff41 100644
--- a/drivers/gpu/drm/bridge/panel.c
+++ b/drivers/gpu/drm/bridge/panel.c
@@ -22,6 +22,7 @@ struct panel_bridge {
struct drm_connector connector;
struct drm_panel *panel;
u32 connector_type;
+ u32 bus_format;
};

static inline struct panel_bridge *
@@ -40,8 +41,15 @@ static int panel_bridge_connector_get_modes(struct drm_connector *connector)
{
struct panel_bridge *panel_bridge =
drm_connector_to_panel_bridge(connector);
+ int ret;
+
+ ret = drm_panel_get_modes(panel_bridge->panel);
+
+ if (panel_bridge->bus_format)
+ drm_display_info_set_bus_formats(&connector->display_info,
+ &panel_bridge->bus_format, 1);

- return drm_panel_get_modes(panel_bridge->panel);
+ return ret;
}

static const struct drm_connector_helper_funcs
@@ -203,6 +211,18 @@ void drm_panel_bridge_remove(struct drm_bridge *bridge)
}
EXPORT_SYMBOL(drm_panel_bridge_remove);

+void drm_panel_bridge_set_bus_format(struct drm_bridge *bridge, u32 bus_format)
+{
+ struct panel_bridge *panel_bridge;
+
+ if (!bridge)
+ return;
+
+ panel_bridge = drm_bridge_to_panel_bridge(bridge);
+ panel_bridge->bus_format = bus_format;
+}
+EXPORT_SYMBOL(drm_panel_bridge_set_bus_format);
+
static void devm_drm_panel_bridge_release(struct device *dev, void *res)
{
struct drm_bridge **bridge = res;
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index 682d01ba920c..81903b92f187 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -268,6 +268,7 @@ void drm_bridge_enable(struct drm_bridge *bridge);
struct drm_bridge *drm_panel_bridge_add(struct drm_panel *panel,
u32 connector_type);
void drm_panel_bridge_remove(struct drm_bridge *bridge);
+void drm_panel_bridge_set_bus_format(struct drm_bridge *bridge, u32 bus_format);
struct drm_bridge *devm_drm_panel_bridge_add(struct device *dev,
struct drm_panel *panel,
u32 connector_type);
--
2.11.0
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