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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
This commit is contained in:
Chris Zhong 2017-03-08 10:27:57 +08:00 committed by Sean Paul
parent 05c00c2f19
commit 9346ab7d72
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/rockchip/cdn-dp-reg.c
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@ -671,6 +671,10 @@ int cdn_dp_config_video(struct cdn_dp_device *dp)
rem = do_div(symbol, 1000); rem = do_div(symbol, 1000);
if (tu_size_reg > 64) { if (tu_size_reg > 64) {
ret = -EINVAL; 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; goto err_config_video;
} }
} while ((symbol <= 1) || (tu_size_reg - symbol < 4) || } while ((symbol <= 1) || (tu_size_reg - symbol < 4) ||