diff options
Diffstat (limited to 'drivers/gpu/drm/msm/dsi/dsi_manager.c')
-rw-r--r-- | drivers/gpu/drm/msm/dsi/dsi_manager.c | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 60dbd82..dc3d322 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -517,7 +517,7 @@ static const struct drm_bridge_funcs dsi_mgr_bridge_funcs = { .mode_set = dsi_mgr_bridge_mode_set, }; -/* initialize connector */ +/* initialize connector when we're connected to a drm_panel */ struct drm_connector *msm_dsi_manager_connector_init(u8 id) { struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); @@ -602,6 +602,53 @@ fail: return ERR_PTR(ret); } +struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id) +{ + struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); + struct drm_device *dev = msm_dsi->dev; + struct drm_encoder *encoder; + struct drm_bridge *int_bridge, *ext_bridge; + struct drm_connector *connector; + struct list_head *connector_list; + + int_bridge = msm_dsi->bridge; + ext_bridge = msm_dsi->external_bridge = + msm_dsi_host_get_bridge(msm_dsi->host); + + /* + * HACK: we may not know the external DSI bridge device's mode + * flags here. We'll get to know them only when the device + * attaches to the dsi host. For now, assume the bridge supports + * DSI video mode + */ + encoder = msm_dsi->encoders[MSM_DSI_VIDEO_ENCODER_ID]; + + /* link the internal dsi bridge to the external bridge */ + int_bridge->next = ext_bridge; + /* set the external bridge's encoder as dsi's encoder */ + ext_bridge->encoder = encoder; + + drm_bridge_attach(dev, ext_bridge); + + /* + * we need the drm_connector created by the external bridge + * driver (or someone else) to feed it to our driver's + * priv->connector[] list, mainly for msm_fbdev_init() + */ + connector_list = &dev->mode_config.connector_list; + + list_for_each_entry(connector, connector_list, head) { + int i; + + for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { + if (connector->encoder_ids[i] == encoder->base.id) + return connector; + } + } + + return ERR_PTR(-ENODEV); +} + void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge) { } |