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>
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@ -144,10 +144,14 @@ static void mdp5_encoder_mode_set(struct drm_encoder *encoder,
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mode->type, mode->flags);
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ctrl_pol = 0;
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if (mode->flags & DRM_MODE_FLAG_NHSYNC)
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ctrl_pol |= MDP5_INTF_POLARITY_CTL_HSYNC_LOW;
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if (mode->flags & DRM_MODE_FLAG_NVSYNC)
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ctrl_pol |= MDP5_INTF_POLARITY_CTL_VSYNC_LOW;
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/* DSI controller cannot handle active-low sync signals. */
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if (mdp5_encoder->intf.type != INTF_DSI) {
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if (mode->flags & DRM_MODE_FLAG_NHSYNC)
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ctrl_pol |= MDP5_INTF_POLARITY_CTL_HSYNC_LOW;
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if (mode->flags & DRM_MODE_FLAG_NVSYNC)
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ctrl_pol |= MDP5_INTF_POLARITY_CTL_VSYNC_LOW;
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}
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/* probably need to get DATA_EN polarity from panel.. */
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dtv_hsync_skew = 0; /* get this from panel? */
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