From: Kuogee Hsieh quic_khsieh@quicinc.com
stable inclusion from stable-v5.10.121 commit 328cfeac735c02e7b0a346eb885e3bfad2b973dd category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5L6CQ
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit e18aeea7f5efb9508722c8c7fd4d32e6f8cdfe50 ]
The “DP timing” requires the active region to be defined in the bottom-right corner of the frame dimensions which is different with DSI. Therefore both display_h_end and display_v_end need to be adjusted accordingly. However current implementation has only display_h_end adjusted.
Signed-off-by: Kuogee Hsieh quic_khsieh@quicinc.com
Fixes: fc3a69ec68d3 ("drm/msm/dpu: intf timing path for displayport") Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Reviewed-by: Stephen Boyd swboyd@chromium.org Patchwork: https://patchwork.freedesktop.org/patch/476277/ Link: https://lore.kernel.org/r/1645824192-29670-2-git-send-email-quic_khsieh@quic... Signed-off-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Acked-by: Xie XiuQi xiexiuqi@huawei.com --- drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c index 6f0f54588124..108882bbd2b8 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c @@ -146,6 +146,7 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, active_v_end = active_v_start + (p->yres * hsync_period) - 1;
display_v_start += p->hsync_pulse_width + p->h_back_porch; + display_v_end -= p->h_front_porch;
active_hctl = (active_h_end << 16) | active_h_start; display_hctl = active_hctl;