commit <711c7adc4687> ("drm: exynos: dsi: Use drm panel_bridge API")
added devm_drm_of_get_bridge for looking up if child node has panel
or bridge.
However commit <b089c0a9b14c> ("Revert "drm: of: Lookup if child node
has panel or bridge") has reverted panel or bridge child node lookup
from devm_drm_of_get_bridge which eventually failed to find the DSI
devices in exynos drm dsi driver.
So, use the conventional child panel bridge lookup helpers like it
does before.
Signed-off-by: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/exynos/exynos_drm_dsi.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index f067c86b0b12..ec673223d6b7 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -25,6 +25,7 @@
#include <drm/drm_atomic_helper.h>
#include <drm/drm_bridge.h>
#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_panel.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_simple_kms_helper.h>
@@ -1451,9 +1452,18 @@ static int exynos_dsi_host_attach(struct mipi_dsi_host *host,
struct device *dev = dsi->dev;
struct drm_encoder *encoder = &dsi->encoder;
struct drm_device *drm = encoder->dev;
+ struct drm_panel *panel;
int ret;
- dsi->out_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0);
+ panel = of_drm_find_panel(device->dev.of_node);
+ if (!IS_ERR(panel)) {
+ dsi->out_bridge = devm_drm_panel_bridge_add(dev, panel);
+ } else {
+ dsi->out_bridge = of_drm_find_bridge(device->dev.of_node);
+ if (!dsi->out_bridge)
+ dsi->out_bridge = ERR_PTR(-EINVAL);
+ }
+
if (IS_ERR(dsi->out_bridge)) {
ret = PTR_ERR(dsi->out_bridge);
DRM_DEV_ERROR(dev, "failed to find the bridge: %d\n", ret);
--
2.25.1
