From: Rob Clark <robdclark@xxxxxxxxxxxx>
For now, since we have a mix of bridges which support this flag, which
which do *not* support this flag, or work both ways, try it once with
NO_CONNECTOR and then fall back to the old way if that doesn't work.
Eventually we can drop the fallback path.
Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
---
drivers/gpu/drm/msm/Kconfig | 2 ++
drivers/gpu/drm/msm/dsi/dsi_manager.c | 41 ++++++++++++++++++---------
2 files changed, 30 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig
index e9c6af78b1d7..36e5ba3ccc28 100644
--- a/drivers/gpu/drm/msm/Kconfig
+++ b/drivers/gpu/drm/msm/Kconfig
@@ -14,6 +14,8 @@ config DRM_MSM
select REGULATOR
select DRM_KMS_HELPER
select DRM_PANEL
+ select DRM_BRIDGE
+ select DRM_PANEL_BRIDGE
select DRM_SCHED
select SHMEM
select TMPFS
diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c
index c41d39f5b7cf..1fd1cf93abbf 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_manager.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c
@@ -3,6 +3,8 @@
* Copyright (c) 2015, The Linux Foundation. All rights reserved.
*/
+#include "drm/drm_bridge_connector.h"
+
#include "msm_kms.h"
#include "dsi.h"
@@ -690,8 +692,7 @@ struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 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 ret;
int_bridge = msm_dsi->bridge;
ext_bridge = msm_dsi->external_bridge =
@@ -699,22 +700,36 @@ struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id)
encoder = msm_dsi->encoder;
- /* link the internal dsi bridge to the external bridge */
- drm_bridge_attach(encoder, ext_bridge, int_bridge, 0);
-
/*
- * 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()
+ * Try first to create the bridge without it creating it's own
+ * connector.. currently some bridges support this, and others
+ * do not (and some support both modes)
*/
- connector_list = &dev->mode_config.connector_list;
+ ret = drm_bridge_attach(encoder, ext_bridge, int_bridge,
+ DRM_BRIDGE_ATTACH_NO_CONNECTOR);
+ if (ret == -EINVAL) {
+ struct drm_connector *connector;
+ struct list_head *connector_list;
+
+ /* link the internal dsi bridge to the external bridge */
+ drm_bridge_attach(encoder, ext_bridge, int_bridge, 0);
+
+ /*
+ * 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;
+ }
- list_for_each_entry(connector, connector_list, head) {
- if (drm_connector_has_possible_encoder(connector, encoder))
- return connector;
+ return ERR_PTR(-ENODEV);
}
- return ERR_PTR(-ENODEV);
+ return drm_bridge_connector_init(dev, encoder);
}
void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge)
--
2.31.1
