diff mbox series

[v2,13/14] drm/bridge: ti-sn65dsi86: Print an error if we fallback to panel modes

Message ID 20210329195255.v2.13.Ib4183a04e8698f60b67558f363fddbbaf33dd445@changeid (mailing list archive)
State New, archived
Headers show
Series drm: Fix EDID reading on ti-sn65dsi86 | expand

Commit Message

Doug Anderson March 30, 2021, 2:53 a.m. UTC 
Now that we can properly read the EDID for modes there should be no
reason to fallback to the fixed modes that our downstream panel driver
provides us. Let's make that clear by:
- Putting an error message in the logs if we fall back.
- Putting a comment in saying what's going on.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
---

(no changes since v1)

 drivers/gpu/drm/bridge/ti-sn65dsi86.c | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
index 92498900c58d..20c3b13939c2 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
@@ -318,6 +318,13 @@  static int ti_sn_bridge_connector_get_modes(struct drm_connector *connector)
 			return num;
 	}
 
+	/*
+	 * Ideally this should never happen and we could remove the fallback
+	 * but let's preserve old behavior.
+	 */
+	DRM_DEV_ERROR(pdata->dev,
+		      "Failed to read EDID; falling back to panel modes");
+
 exit:
 	return drm_panel_get_modes(pdata->panel, connector);
 }