diff options
| author | Hai Li <hali@codeaurora.org> | 2015-05-22 17:16:46 +0300 |
|---|---|---|
| committer | Rob Clark <robdclark@gmail.com> | 2015-06-11 20:11:05 +0300 |
| commit | 1efb92a306f08119c81de148b05afc24446b8d7a (patch) | |
| tree | 4e342fe92d68aff8584c170ca222fbf3398f957d /drivers/gpu/drm/msm/mdp | |
| parent | 964a0754e49691d0d675ac00d09042118f098cd0 (diff) | |
| download | linux-1efb92a306f08119c81de148b05afc24446b8d7a.tar.xz | |
drm/msm/mdp5: Always generate active-high sync signals for DSI
DSI video mode engine can only take active-high sync signals. This
change prevents MDP5 sending active-low sync signals to DSI in any
case.
Signed-off-by: Hai Li <hali@codeaurora.org>
Tested-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/mdp')
| -rw-r--r-- | drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c index 84d0a7b92918..de97c08f3f1f 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c @@ -144,10 +144,14 @@ static void mdp5_encoder_mode_set(struct drm_encoder *encoder, mode->type, mode->flags); ctrl_pol = 0; - if (mode->flags & DRM_MODE_FLAG_NHSYNC) - ctrl_pol |= MDP5_INTF_POLARITY_CTL_HSYNC_LOW; - if (mode->flags & DRM_MODE_FLAG_NVSYNC) - ctrl_pol |= MDP5_INTF_POLARITY_CTL_VSYNC_LOW; + + /* DSI controller cannot handle active-low sync signals. */ + if (mdp5_encoder->intf.type != INTF_DSI) { + if (mode->flags & DRM_MODE_FLAG_NHSYNC) + ctrl_pol |= MDP5_INTF_POLARITY_CTL_HSYNC_LOW; + if (mode->flags & DRM_MODE_FLAG_NVSYNC) + ctrl_pol |= MDP5_INTF_POLARITY_CTL_VSYNC_LOW; + } /* probably need to get DATA_EN polarity from panel.. */ dtv_hsync_skew = 0; /* get this from panel? */ |