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disp: msm: sde: avoid wb commit before cwb disable

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Add support to detect if a writeback commit is received
while cwb commit is going on. Allow writeback commit
only once the cwb commit is completed and cwb is
disabled.

Change-Id: I020659ed63f9ff660a905938a92a6ed6d07a4917
Signed-off-by: Krishna Manikandan <[email protected]>
This commit is contained in:
Krishna Manikandan 2020-05-01 17:06:25 +05:30 • committed by Gerrit - the friendly Code Review server
commit 603dd34629
1 changed files with 8 additions and 0 deletions
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8
msm/sde/sde_encoder_phys_wb.c
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@ -722,6 +722,7 @@ static int sde_encoder_phys_wb_atomic_check(
struct sde_rect wb_roi;
const struct drm_display_mode *mode = &crtc_state->mode;
int rc;
bool clone_mode_curr = false;
SDE_DEBUG("[atomic_check:%d,\"%s\",%d,%d]\n",
hw_wb->idx - WB_0, mode->name,
@ -737,8 +738,15 @@ static int sde_encoder_phys_wb_atomic_check(
return -EINVAL;
}
clone_mode_curr = phys_enc->in_clone_mode;
_sde_enc_phys_wb_detect_cwb(phys_enc, crtc_state);
if (clone_mode_curr && !phys_enc->in_clone_mode) {
SDE_ERROR("WB commit before CWB disable\n");
return -EINVAL;
}
memset(&wb_roi, 0, sizeof(struct sde_rect));
rc = sde_wb_connector_state_get_output_roi(conn_state, &wb_roi);