Merge "drm/msm/sde: Add refcount support for wb irq ctrl" (97ffa415) · Commits · e / devices / android_kernel_fairphone_FP3

drivers/gpu/drm/msm/sde/sde_encoder_phys.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -255,6 +255,7 @@ struct sde_encoder_irq {
		* @enc_spinlock: Virtual-Encoder-Wide Spin Lock for IRQ purposes
		* @enable_state: Enable state tracking
		* @vblank_refcount: Reference count of vblank request
		* @wbirq_refcount: Reference count of wb irq request
		* @vsync_cnt: Vsync count for the physical encoder
		* @underrun_cnt: Underrun count for the physical encoder
		* @pending_kickoff_cnt: Atomic counter tracking the number of kickoffs
		@@ -293,6 +294,7 @@ struct sde_encoder_phys {
		enum sde_enc_enable_state enable_state;
		struct mutex *vblank_ctl_lock;
		atomic_t vblank_refcount;
		atomic_t wbirq_refcount;
		atomic_t vsync_cnt;
		atomic_t underrun_cnt;
		atomic_t pending_ctlstart_cnt;

drivers/gpu/drm/msm/sde/sde_encoder_phys_wb.c

+28 −8

Original line number	Diff line number	Diff line
		@@ -904,7 +904,8 @@ static void sde_encoder_phys_wb_irq_ctrl(
		{

		struct sde_encoder_phys_wb *wb_enc = to_sde_encoder_phys_wb(phys);
		int index = 0;
		int index = 0, refcount;
		int ret = 0;

		if (!wb_enc)
		return;
		@@ -912,17 +913,33 @@ static void sde_encoder_phys_wb_irq_ctrl(
		if (wb_enc->bypass_irqreg)
		return;

		if (enable) {
		sde_encoder_helper_register_irq(phys, INTR_IDX_WB_DONE);
		refcount = atomic_read(&phys->wbirq_refcount);

		if (!enable && !refcount)
		return;

		SDE_EVT32(DRMID(phys->parent), enable,
		atomic_read(&phys->wbirq_refcount));

		if (enable && atomic_inc_return(&phys->wbirq_refcount) == 1) {
		ret = sde_encoder_helper_register_irq(phys, INTR_IDX_WB_DONE);
		if (ret)
		atomic_dec_return(&phys->wbirq_refcount);

		} else if (!enable &&
		atomic_dec_return(&phys->wbirq_refcount) == 0) {
		ret = sde_encoder_helper_unregister_irq(phys, INTR_IDX_WB_DONE);
		if (ret)
		atomic_inc_return(&phys->wbirq_refcount);
		}

		if (phys->in_clone_mode) {
		if (enable) {
		for (index = 0; index < CRTC_DUAL_MIXERS; index++)
		sde_encoder_helper_register_irq(phys,
		index ? INTR_IDX_PP3_OVFL
		: INTR_IDX_PP2_OVFL);
		}
		} else {
		sde_encoder_helper_unregister_irq(phys, INTR_IDX_WB_DONE);
		if (phys->in_clone_mode) {
		for (index = 0; index < CRTC_DUAL_MIXERS; index++)
		sde_encoder_helper_unregister_irq(phys,
		index ? INTR_IDX_PP3_OVFL
		@@ -1354,10 +1371,12 @@ static void sde_encoder_phys_wb_disable(struct sde_encoder_phys *phys_enc)

		phys_enc->enable_state = SDE_ENC_DISABLING;
		sde_encoder_phys_wb_prepare_for_kickoff(phys_enc, NULL);
		sde_encoder_phys_wb_irq_ctrl(phys_enc, true);
		if (phys_enc->hw_ctl->ops.trigger_flush)
		phys_enc->hw_ctl->ops.trigger_flush(phys_enc->hw_ctl);
		sde_encoder_helper_trigger_start(phys_enc);
		sde_encoder_phys_wb_wait_for_commit_done(phys_enc);
		sde_encoder_phys_wb_irq_ctrl(phys_enc, false);
		exit:
		phys_enc->enable_state = SDE_ENC_DISABLED;
		wb_enc->crtc = NULL;
		@@ -1576,6 +1595,7 @@ struct sde_encoder_phys *sde_encoder_phys_wb_init(
		phys_enc->enc_spinlock = p->enc_spinlock;
		phys_enc->vblank_ctl_lock = p->vblank_ctl_lock;
		atomic_set(&phys_enc->pending_retire_fence_cnt, 0);
		atomic_set(&phys_enc->wbirq_refcount, 0);

		irq = &phys_enc->irq[INTR_IDX_WB_DONE];
		INIT_LIST_HEAD(&irq->cb.list);