From 9346ab7d72c0e0526bd9cea70fa4ad768fe27c20 Mon Sep 17 00:00:00 2001
From: Chris Zhong <zyw@rock-chips.com>
Date: Wed, 8 Mar 2017 10:27:57 +0800
Subject: [PATCH] drm/rockchip: cdn-dp: add more log for video config
In order to analyze some video config failed, add some useful
printouts.
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1488940077-22297-4-git-send-email-zyw@rock-chips.com
---
drivers/gpu/drm/rockchip/cdn-dp-reg.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/rockchip/cdn-dp-reg.c b/drivers/gpu/drm/rockchip/cdn-dp-reg.c
index 963d8abec463e..b14d211f6c217 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-reg.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-reg.c
@@ -671,6 +671,10 @@ int cdn_dp_config_video(struct cdn_dp_device *dp)
rem = do_div(symbol, 1000);
if (tu_size_reg > 64) {
ret = -EINVAL;
+ DRM_DEV_ERROR(dp->dev,
+ "tu error, clk:%d, lanes:%d, rate:%d\n",
+ mode->clock, dp->link.num_lanes,
+ link_rate);
goto err_config_video;
}
} while ((symbol <= 1) || (tu_size_reg - symbol < 4) ||
--
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