On 19/01/2023 16:26, Vinod Polimera wrote:
Populate the enocder software structure to reflect the updated crtc appropriately during crtc enable/disable for a new commit while taking care of the self refresh transitions when crtc disable is triggered from the drm self refresh library.Signed-off-by: Vinod Polimera <quic_vpoli...@quicinc.com> --- drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 31 ++++++++++++++++++++++++++----- 1 file changed, 26 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c index d513aeb4..e8e456a 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c @@ -1013,14 +1013,23 @@ static void dpu_crtc_disable(struct drm_crtc *crtc, crtc); struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc); struct dpu_crtc_state *cstate = to_dpu_crtc_state(crtc->state); - struct drm_encoder *encoder; + struct drm_encoder *encoder = NULL;
Why is this chunk necessary?
unsigned long flags; bool release_bandwidth = false;DRM_DEBUG_KMS("crtc%d\n", crtc->base.id); - if (old_crtc_state->self_refresh_active)+ /* If disable is triggered while in self refresh mode, + * reset the encoder software state so that in enable + * it won't trigger a warn while assigning crtc. + */ + if (old_crtc_state->self_refresh_active) { + drm_for_each_encoder_mask(encoder, crtc->dev, + old_crtc_state->encoder_mask) { + dpu_encoder_assign_crtc(encoder, NULL); + } return; + }/* Disable/save vblank irq handling */drm_crtc_vblank_off(crtc); @@ -1033,7 +1042,14 @@ static void dpu_crtc_disable(struct drm_crtc *crtc, */ if (dpu_encoder_get_intf_mode(encoder) == INTF_MODE_VIDEO) release_bandwidth = true; - dpu_encoder_assign_crtc(encoder, NULL); + + /* + * If disable is triggered during psr active(e.g: screen dim in PSR), + * we will need encoder->crtc connection to process the device sleep & + * preserve it during psr sequence. + */ + if (!crtc->state->self_refresh_active) + dpu_encoder_assign_crtc(encoder, NULL); }/* wait for frame_event_done completion */@@ -1081,6 +1097,9 @@ static void dpu_crtc_enable(struct drm_crtc *crtc, struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc); struct drm_encoder *encoder; bool request_bandwidth = false; + struct drm_crtc_state *old_crtc_state; + + old_crtc_state = drm_atomic_get_old_crtc_state(state, crtc);pm_runtime_get_sync(crtc->dev->dev); @@ -1103,8 +1122,10 @@ static void dpu_crtc_enable(struct drm_crtc *crtc,trace_dpu_crtc_enable(DRMID(crtc), true, dpu_crtc); dpu_crtc->enabled = true;- drm_for_each_encoder_mask(encoder, crtc->dev, crtc->state->encoder_mask)- dpu_encoder_assign_crtc(encoder, crtc); + if (!old_crtc_state->self_refresh_active) { + drm_for_each_encoder_mask(encoder, crtc->dev, crtc->state->encoder_mask) + dpu_encoder_assign_crtc(encoder, crtc); + }/* Enable/restore vblank irq handling */drm_crtc_vblank_on(crtc);
-- With best wishes Dmitry
