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Date: Mon, 26 Jan 2015 14:08:46 -0500 From: Jilai Wang <jilaiw@...eaurora.org> To: dri-devel@...ts.freedesktop.org Cc: linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org, robdclark@...il.com, Jilai Wang <jilaiw@...eaurora.org> Subject: [PATCH] drm/msm/mdp: full mode set if crtc enable state is changed Crtc state may not reflect the current crtc state if drm_fb_helper_blank is called to turn dpms off without turning crtc off. A full modeset in this case to solve the problem. Signed-off-by: Jilai Wang <jilaiw@...eaurora.org> --- drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c index eea209e..60d0f58 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c @@ -310,6 +310,13 @@ static int mdp5_crtc_atomic_check(struct drm_crtc *crtc, return -EINVAL; } + /* + * check if the crtc state matches with the current state + * if not match, force a full mode set + */ + if (state->enable != mdp5_crtc->enabled) + state->mode_changed = true; + /* verify that there are not too many planes attached to crtc * and that we don't have conflicting mixer stages: */ -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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