diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c index 558f9abb1a99..995d11e69365 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c @@ -764,43 +764,6 @@ void dpu_crtc_commit_kickoff(struct drm_crtc *crtc, bool async) DPU_ATRACE_END("crtc_commit"); } -/** - * _dpu_crtc_vblank_enable_no_lock - update power resource and vblank request - * @dpu_crtc: Pointer to dpu crtc structure - * @enable: Whether to enable/disable vblanks - */ -static void _dpu_crtc_vblank_enable_no_lock( - struct dpu_crtc *dpu_crtc, bool enable) -{ - struct drm_crtc *crtc = &dpu_crtc->base; - struct drm_device *dev = crtc->dev; - struct drm_encoder *enc; - - if (enable) { - list_for_each_entry(enc, &dev->mode_config.encoder_list, head) { - if (enc->crtc != crtc) - continue; - - trace_dpu_crtc_vblank_enable(DRMID(&dpu_crtc->base), - DRMID(enc), enable, - dpu_crtc); - - dpu_encoder_assign_crtc(enc, crtc); - } - } else { - list_for_each_entry(enc, &dev->mode_config.encoder_list, head) { - if (enc->crtc != crtc) - continue; - - trace_dpu_crtc_vblank_enable(DRMID(&dpu_crtc->base), - DRMID(enc), enable, - dpu_crtc); - - dpu_encoder_assign_crtc(enc, NULL); - } - } -} - static void dpu_crtc_reset(struct drm_crtc *crtc) { struct dpu_crtc_state *cstate; @@ -866,6 +829,10 @@ static void dpu_crtc_disable(struct drm_crtc *crtc, /* Disable/save vblank irq handling */ drm_crtc_vblank_off(crtc); + drm_for_each_encoder_mask(encoder, crtc->dev, + old_crtc_state->encoder_mask) + dpu_encoder_assign_crtc(encoder, NULL); + mutex_lock(&dpu_crtc->crtc_lock); /* wait for frame_event_done completion */ @@ -875,9 +842,6 @@ static void dpu_crtc_disable(struct drm_crtc *crtc, atomic_read(&dpu_crtc->frame_pending)); trace_dpu_crtc_disable(DRMID(crtc), false, dpu_crtc); - if (dpu_crtc->enabled && dpu_crtc->vblank_requested) { - _dpu_crtc_vblank_enable_no_lock(dpu_crtc, false); - } dpu_crtc->enabled = false; if (atomic_read(&dpu_crtc->frame_pending)) { @@ -935,13 +899,13 @@ static void dpu_crtc_enable(struct drm_crtc *crtc, mutex_lock(&dpu_crtc->crtc_lock); trace_dpu_crtc_enable(DRMID(crtc), true, dpu_crtc); - if (!dpu_crtc->enabled && dpu_crtc->vblank_requested) { - _dpu_crtc_vblank_enable_no_lock(dpu_crtc, true); - } dpu_crtc->enabled = true; mutex_unlock(&dpu_crtc->crtc_lock); + 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); } @@ -1186,10 +1150,33 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc, int dpu_crtc_vblank(struct drm_crtc *crtc, bool en) { struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc); + struct drm_encoder *enc; + + trace_dpu_crtc_vblank(DRMID(&dpu_crtc->base), en, dpu_crtc); + + /* + * Normally we would iterate through encoder_mask in crtc state to find + * attached encoders. In this case, we might be disabling vblank _after_ + * encoder_mask has been cleared. + * + * Instead, we "assign" a crtc to the encoder in enable and clear it in + * disable (which is also after encoder_mask is cleared). So instead of + * using encoder mask, we'll ask the encoder to toggle itself iff it's + * currently assigned to our crtc. + * + * Note also that this function cannot be called while crtc is disabled + * since we use drm_crtc_vblank_on/off. So we don't need to worry + * about the assigned crtcs being inconsistent with the current state + * (which means no need to worry about modeset locks). + */ + list_for_each_entry(enc, &crtc->dev->mode_config.encoder_list, head) { + trace_dpu_crtc_vblank_enable(DRMID(crtc), DRMID(enc), en, + dpu_crtc); + + dpu_encoder_toggle_vblank_for_crtc(enc, crtc, en); + } mutex_lock(&dpu_crtc->crtc_lock); - trace_dpu_crtc_vblank(DRMID(&dpu_crtc->base), en, dpu_crtc); - _dpu_crtc_vblank_enable_no_lock(dpu_crtc, en); dpu_crtc->vblank_requested = en; mutex_unlock(&dpu_crtc->crtc_lock); diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index 340e7360152c..f60dcf217755 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -1267,22 +1267,29 @@ void dpu_encoder_assign_crtc(struct drm_encoder *drm_enc, struct drm_crtc *crtc) { struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc); unsigned long lock_flags; - bool enable; - int i; - - enable = crtc ? true : false; - - if (!drm_enc) { - DPU_ERROR("invalid encoder\n"); - return; - } - trace_dpu_enc_vblank_cb(DRMID(drm_enc), enable); spin_lock_irqsave(&dpu_enc->enc_spinlock, lock_flags); /* crtc should always be cleared before re-assigning */ WARN_ON(crtc && dpu_enc->crtc); dpu_enc->crtc = crtc; spin_unlock_irqrestore(&dpu_enc->enc_spinlock, lock_flags); +} + +void dpu_encoder_toggle_vblank_for_crtc(struct drm_encoder *drm_enc, + struct drm_crtc *crtc, bool enable) +{ + struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc); + unsigned long lock_flags; + int i; + + trace_dpu_enc_vblank_cb(DRMID(drm_enc), enable); + + spin_lock_irqsave(&dpu_enc->enc_spinlock, lock_flags); + if (dpu_enc->crtc != crtc) { + spin_unlock_irqrestore(&dpu_enc->enc_spinlock, lock_flags); + return; + } + spin_unlock_irqrestore(&dpu_enc->enc_spinlock, lock_flags); for (i = 0; i < dpu_enc->num_phys_encs; i++) { struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h index 9790bd1a31e0..3f5dafe00580 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h @@ -62,6 +62,16 @@ void dpu_encoder_get_hw_resources(struct drm_encoder *encoder, void dpu_encoder_assign_crtc(struct drm_encoder *encoder, struct drm_crtc *crtc); +/** + * dpu_encoder_toggle_vblank_for_crtc - Toggles vblank interrupts on or off if + * the encoder is assigned to the given crtc + * @encoder: encoder pointer + * @crtc: crtc pointer + * @enable: true if vblank should be enabled + */ +void dpu_encoder_toggle_vblank_for_crtc(struct drm_encoder *encoder, + struct drm_crtc *crtc, bool enable); + /** * dpu_encoder_register_frame_event_callback - provide callback to encoder that * will be called after the request is complete, or other events.