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);
encoder = msm_dsi->encoder;
/* link the internal dsi bridge to the external bridge */
drm_bridge_attach(encoder, ext_bridge, int_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) {
if (drm_connector_has_possible_encoder(connector, encoder))
return connector;
}
return ERR_PTR(-ENODEV);
}
int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev,
struct drm_encoder *encoder)
{
struct msm_drm_private *priv;
struct drm_bridge *ext_bridge;
int ret;
if (WARN_ON(!encoder) || WARN_ON(!msm_dsi) || WARN_ON(!dev))
return -EINVAL;
priv = dev->dev_private;
msm_dsi->dev = dev;
ret = msm_dsi_host_modeset_init(msm_dsi->host, dev);
if (ret) {
dev_err(dev->dev, "failed to modeset init host: %d\n", ret);
goto fail;
}
if (!msm_dsi_manager_validate_current_config(msm_dsi->id))
goto fail;
msm_dsi->encoder = encoder;
msm_dsi->bridge = msm_dsi_manager_bridge_init(msm_dsi->id);
if (IS_ERR(msm_dsi->bridge)) {
ret = PTR_ERR(msm_dsi->bridge);
dev_err(dev->dev, "failed to create dsi bridge: %d\n", ret);
msm_dsi->bridge = NULL;
goto fail;
}
/*
* check if the dsi encoder output is connected to a panel or an
* external bridge. We create a connector only if we're connected to a
* drm_panel device. When we're connected to an external bridge, we
* assume that the drm_bridge driver will create the connector itself.
*/
ext_bridge = msm_dsi_host_get_bridge(msm_dsi->host);
if (ext_bridge)
msm_dsi->connector =
msm_dsi_manager_ext_bridge_init(msm_dsi->id);
else
msm_dsi->connector =
msm_dsi_manager_connector_init(msm_dsi->id);
if (IS_ERR(msm_dsi->connector)) {
ret = PTR_ERR(msm_dsi->connector);
dev_err(dev->dev,
"failed to create dsi connector: %d\n", ret);
msm_dsi->connector = NULL;
goto fail;
}
priv->bridges[priv->num_bridges++] = msm_dsi->bridge;
priv->connectors[priv->num_connectors++] = msm_dsi->connector;
return 0;
fail:
/* bridge/connector are normally destroyed by drm: */
if (msm_dsi->bridge) {
msm_dsi_manager_bridge_destroy(msm_dsi->bridge);
msm_dsi->bridge = NULL;
}
/* don't destroy connector if we didn't make it */
if (msm_dsi->connector && !msm_dsi->external_bridge)
msm_dsi->connector->funcs->destroy(msm_dsi->connector);
msm_dsi->connector = NULL;
return ret;
}
int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev,
struct drm_encoder *encoders[MSM_DSI_ENCODER_NUM])
{
struct msm_drm_private *priv = dev->dev_private;
struct drm_bridge *ext_bridge;
int ret, i;
if (WARN_ON(!encoders[MSM_DSI_VIDEO_ENCODER_ID] ||
!encoders[MSM_DSI_CMD_ENCODER_ID]))
return -EINVAL;
msm_dsi->dev = dev;
ret = msm_dsi_host_modeset_init(msm_dsi->host, dev);
if (ret) {
dev_err(dev->dev, "failed to modeset init host: %d\n", ret);
goto fail;
}
msm_dsi->bridge = msm_dsi_manager_bridge_init(msm_dsi->id);
if (IS_ERR(msm_dsi->bridge)) {
ret = PTR_ERR(msm_dsi->bridge);
dev_err(dev->dev, "failed to create dsi bridge: %d\n", ret);
msm_dsi->bridge = NULL;
goto fail;
}
for (i = 0; i < MSM_DSI_ENCODER_NUM; i++) {
encoders[i]->bridge = msm_dsi->bridge;
msm_dsi->encoders[i] = encoders[i];
}
/*
* check if the dsi encoder output is connected to a panel or an
* external bridge. We create a connector only if we're connected to a
* drm_panel device. When we're connected to an external bridge, we
* assume that the drm_bridge driver will create the connector itself.
*/
ext_bridge = msm_dsi_host_get_bridge(msm_dsi->host);
if (ext_bridge)
msm_dsi->connector =
msm_dsi_manager_ext_bridge_init(msm_dsi->id);
else
msm_dsi->connector =
msm_dsi_manager_connector_init(msm_dsi->id);
if (IS_ERR(msm_dsi->connector)) {
ret = PTR_ERR(msm_dsi->connector);
dev_err(dev->dev,
"failed to create dsi connector: %d\n", ret);
msm_dsi->connector = NULL;
goto fail;
}
priv->bridges[priv->num_bridges++] = msm_dsi->bridge;
priv->connectors[priv->num_connectors++] = msm_dsi->connector;
return 0;
fail:
if (msm_dsi) {
/* bridge/connector are normally destroyed by drm: */
if (msm_dsi->bridge) {
msm_dsi_manager_bridge_destroy(msm_dsi->bridge);
msm_dsi->bridge = NULL;
}
/* don't destroy connector if we didn't make it */
if (msm_dsi->connector && !msm_dsi->external_bridge)
msm_dsi->connector->funcs->destroy(msm_dsi->connector);
msm_dsi->connector = NULL;
}
return ret;
}