[PATCH V4 08/10] drm/exynos: dp: create bridge chain using ptn3460 and panel_binder

[Ajay Kumar]

exynos_dp supports a simple bridge chain with ptn3460 bridge
and an LVDS panel attached to it.
This patch creates the bridge chain with ptn3460 as the head
of the list and panel_binder being the tail.

Signed-off-by: Ajay Kumar <ajaykumar.rs at samsung.com>
---
 drivers/gpu/drm/exynos/exynos_dp_core.c |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c 
b/drivers/gpu/drm/exynos/exynos_dp_core.c
index d8546ea..69535f7 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -30,6 +30,7 @@
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_panel.h>
 #include <drm/bridge/ptn3460.h>
+#include <drm/bridge/panel_binder.h>

 #include "exynos_drm_drv.h"
 #include "exynos_dp_core.h"
@@ -992,7 +993,7 @@ static int exynos_drm_attach_lcd_bridge(struct 
exynos_dp_device *dp,
                struct drm_encoder *encoder)
 {
        struct bridge_init bridge;
-       struct drm_bridge *bridge_chain = NULL;
+       struct drm_bridge *bridge_chain = NULL, *next = NULL;
        bool connector_created = false;

        if (find_bridge("nxp,ptn3460", &bridge)) {
@@ -1000,6 +1001,15 @@ static int exynos_drm_attach_lcd_bridge(struct 
exynos_dp_device *dp,
                                                                bridge.node);
        }

+       if (bridge_chain && dp->edp_panel) {
+               next = panel_binder_init(dp->drm_dev, encoder, bridge.client,
+                       bridge.node, dp->edp_panel, DRM_MODE_CONNECTOR_LVDS,
+                       DRM_CONNECTOR_POLL_HPD);
+               if (next)
+                       connector_created = true;
+               drm_bridge_add_to_chain(bridge_chain, next);
+       }
+
        return connector_created;
 }

-- 
1.7.9.5