[Freedreno] [PATCH 3/6] drm/msm/dpu: allow just single IRQ callback

Abhinav Kumar quic_abhinavk at quicinc.com
Tue Feb 15 23:58:19 UTC 2022



On 2/1/2022 7:10 AM, Dmitry Baryshkov wrote:
> DPU interrupts code allows multiple callbacks per interrut. In reality
> none of the interrupts is shared between blocks (and will probably never
> be). Drop support for registering multiple callbacks per interrupt to
> simplify interrupt handling code.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>

I think this has some kbot issues, will ack once those are addressed.

> ---
>   drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h  |  16 +-
>   drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c   |   7 +-
>   .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h  |   2 +-
>   .../drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c  |  10 +-
>   .../drm/msm/disp/dpu1/dpu_encoder_phys_vid.c  |   6 +-
>   .../gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c | 140 ++++++------------
>   .../gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h |  12 +-
>   drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h       |  12 --
>   drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h     |  12 +-
>   9 files changed, 75 insertions(+), 142 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h
> index 6dce5d89f817..b5b6e7031fb9 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h
> @@ -44,10 +44,8 @@ u32 dpu_core_irq_read(
>    *                             interrupt
>    * @dpu_kms:		DPU handle
>    * @irq_idx:		irq index
> - * @irq_cb:		IRQ callback structure, containing callback function
> - *			and argument. Passing NULL for irq_cb will unregister
> - *			the callback for the given irq_idx
> - *			This must exist until un-registration.
> + * @irq_cb:		IRQ callback funcion.
> + * @irq_arg:		IRQ callback argument.
>    * @return:		0 for success registering callback, otherwise failure
>    *
>    * This function supports registration of multiple callbacks for each interrupt.
> @@ -55,25 +53,21 @@ u32 dpu_core_irq_read(
>   int dpu_core_irq_register_callback(
>   		struct dpu_kms *dpu_kms,
>   		int irq_idx,
> -		struct dpu_irq_callback *irq_cb);
> +		void (*irq_cb)(void *arg, int irq_idx),
> +		void *irq_arg);
>   
>   /**
>    * dpu_core_irq_unregister_callback - For unregistering callback function on IRQ
>    *                             interrupt
>    * @dpu_kms:		DPU handle
>    * @irq_idx:		irq index
> - * @irq_cb:		IRQ callback structure, containing callback function
> - *			and argument. Passing NULL for irq_cb will unregister
> - *			the callback for the given irq_idx
> - *			This must match with registration.
>    * @return:		0 for success registering callback, otherwise failure
>    *
>    * This function supports registration of multiple callbacks for each interrupt.
>    */
>   int dpu_core_irq_unregister_callback(
>   		struct dpu_kms *dpu_kms,
> -		int irq_idx,
> -		struct dpu_irq_callback *irq_cb);
> +		int irq_idx);
>   
>   /**
>    * dpu_debugfs_core_irq_init - register core irq debugfs
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> index 5576b8a3e6ee..17ca149e7dcd 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> @@ -311,7 +311,7 @@ int dpu_encoder_helper_wait_for_irq(struct dpu_encoder_phys *phys_enc,
>   				      phys_enc->hw_pp->idx - PINGPONG_0,
>   				      atomic_read(wait_info->atomic_cnt));
>   			local_irq_save(flags);
> -			irq->cb.func(phys_enc, irq->irq_idx);
> +			irq->func(phys_enc, irq->irq_idx);
>   			local_irq_restore(flags);
>   			ret = 0;
>   		} else {
> @@ -352,7 +352,7 @@ int dpu_encoder_helper_register_irq(struct dpu_encoder_phys *phys_enc,
>   	}
>   
>   	ret = dpu_core_irq_register_callback(phys_enc->dpu_kms, irq->irq_idx,
> -			&irq->cb);
> +			irq->func, phys_enc);
>   	if (ret) {
>   		DPU_ERROR_PHYS(phys_enc,
>   			"failed to register IRQ callback for %s\n",
> @@ -383,8 +383,7 @@ int dpu_encoder_helper_unregister_irq(struct dpu_encoder_phys *phys_enc,
>   		return 0;
>   	}
>   
> -	ret = dpu_core_irq_unregister_callback(phys_enc->dpu_kms, irq->irq_idx,
> -			&irq->cb);
> +	ret = dpu_core_irq_unregister_callback(phys_enc->dpu_kms, irq->irq_idx);
>   	if (ret) {
>   		DRM_ERROR("unreg cb fail id=%u, intr=%d, irq=%d ret=%d",
>   			  DRMID(phys_enc->parent), intr_idx,
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
> index e7270eb6b84b..80d87871fd94 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
> @@ -174,7 +174,7 @@ struct dpu_encoder_irq {
>   	const char *name;
>   	enum dpu_intr_idx intr_idx;
>   	int irq_idx;
> -	struct dpu_irq_callback cb;
> +	void (*func)(void *arg, int irq_idx);
>   };
>   
>   /**
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
> index 34a6940d12c5..a0652bdcf59b 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
> @@ -782,30 +782,28 @@ struct dpu_encoder_phys *dpu_encoder_phys_cmd_init(
>   	phys_enc->enable_state = DPU_ENC_DISABLED;
>   	for (i = 0; i < INTR_IDX_MAX; i++) {
>   		irq = &phys_enc->irq[i];
> -		INIT_LIST_HEAD(&irq->cb.list);
>   		irq->irq_idx = -EINVAL;
> -		irq->cb.arg = phys_enc;
>   	}
>   
>   	irq = &phys_enc->irq[INTR_IDX_CTL_START];
>   	irq->name = "ctl_start";
>   	irq->intr_idx = INTR_IDX_CTL_START;
> -	irq->cb.func = dpu_encoder_phys_cmd_ctl_start_irq;
> +	irq->func = dpu_encoder_phys_cmd_ctl_start_irq;
>   
>   	irq = &phys_enc->irq[INTR_IDX_PINGPONG];
>   	irq->name = "pp_done";
>   	irq->intr_idx = INTR_IDX_PINGPONG;
> -	irq->cb.func = dpu_encoder_phys_cmd_pp_tx_done_irq;
> +	irq->func = dpu_encoder_phys_cmd_pp_tx_done_irq;
>   
>   	irq = &phys_enc->irq[INTR_IDX_RDPTR];
>   	irq->name = "pp_rd_ptr";
>   	irq->intr_idx = INTR_IDX_RDPTR;
> -	irq->cb.func = dpu_encoder_phys_cmd_pp_rd_ptr_irq;
> +	irq->func = dpu_encoder_phys_cmd_pp_rd_ptr_irq;
>   
>   	irq = &phys_enc->irq[INTR_IDX_UNDERRUN];
>   	irq->name = "underrun";
>   	irq->intr_idx = INTR_IDX_UNDERRUN;
> -	irq->cb.func = dpu_encoder_phys_cmd_underrun_irq;
> +	irq->func = dpu_encoder_phys_cmd_underrun_irq;
>   
>   	atomic_set(&phys_enc->vblank_refcount, 0);
>   	atomic_set(&phys_enc->pending_kickoff_cnt, 0);
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
> index ddd9d89cd456..407e45e2010b 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
> @@ -725,20 +725,18 @@ struct dpu_encoder_phys *dpu_encoder_phys_vid_init(
>   	phys_enc->enc_spinlock = p->enc_spinlock;
>   	for (i = 0; i < INTR_IDX_MAX; i++) {
>   		irq = &phys_enc->irq[i];
> -		INIT_LIST_HEAD(&irq->cb.list);
>   		irq->irq_idx = -EINVAL;
> -		irq->cb.arg = phys_enc;
>   	}
>   
>   	irq = &phys_enc->irq[INTR_IDX_VSYNC];
>   	irq->name = "vsync_irq";
>   	irq->intr_idx = INTR_IDX_VSYNC;
> -	irq->cb.func = dpu_encoder_phys_vid_vblank_irq;
> +	irq->func = dpu_encoder_phys_vid_vblank_irq;
>   
>   	irq = &phys_enc->irq[INTR_IDX_UNDERRUN];
>   	irq->name = "underrun";
>   	irq->intr_idx = INTR_IDX_UNDERRUN;
> -	irq->cb.func = dpu_encoder_phys_vid_underrun_irq;
> +	irq->func = dpu_encoder_phys_vid_underrun_irq;
>   
>   	atomic_set(&phys_enc->vblank_refcount, 0);
>   	atomic_set(&phys_enc->pending_kickoff_cnt, 0);
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
> index 85404c9ab4e1..8297498f2279 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
> @@ -145,21 +145,17 @@ static const struct dpu_intr_reg dpu_intr_set[] = {
>    */
>   static void dpu_core_irq_callback_handler(struct dpu_kms *dpu_kms, int irq_idx)
>   {
> -	struct dpu_irq_callback *cb;
> -
>   	VERB("irq_idx=%d\n", irq_idx);
>   
> -	if (list_empty(&dpu_kms->hw_intr->irq_cb_tbl[irq_idx]))
> +	if (!dpu_kms->hw_intr->irq_tbl[irq_idx].cb)
>   		DRM_ERROR("no registered cb, idx:%d\n", irq_idx);
>   
> -	atomic_inc(&dpu_kms->hw_intr->irq_counts[irq_idx]);
> +	atomic_inc(&dpu_kms->hw_intr->irq_tbl[irq_idx].count);
>   
>   	/*
>   	 * Perform registered function callback
>   	 */
> -	list_for_each_entry(cb, &dpu_kms->hw_intr->irq_cb_tbl[irq_idx], list)
> -		if (cb->func)
> -			cb->func(cb->arg, irq_idx);
> +	dpu_kms->hw_intr->irq_tbl[irq_idx].cb(dpu_kms->hw_intr->irq_tbl[irq_idx].arg, irq_idx);
>   }
>   
>   irqreturn_t dpu_core_irq(struct msm_kms *kms)
> @@ -408,24 +404,18 @@ struct dpu_hw_intr *dpu_hw_intr_init(void __iomem *addr,
>   		struct dpu_mdss_cfg *m)
>   {
>   	struct dpu_hw_intr *intr;
> +	int nirq = MDP_INTR_MAX * 32;
>   
>   	if (!addr || !m)
>   		return ERR_PTR(-EINVAL);
>   
> -	intr = kzalloc(sizeof(*intr), GFP_KERNEL);
> +	intr = kzalloc(struct_size(intr, irq_tbl, nirq), GFP_KERNEL);
>   	if (!intr)
>   		return ERR_PTR(-ENOMEM);
>   
>   	__intr_offset(m, addr, &intr->hw);
>   
> -	intr->total_irqs = ARRAY_SIZE(dpu_intr_set) * 32;
> -
> -	intr->cache_irq_mask = kcalloc(ARRAY_SIZE(dpu_intr_set), sizeof(u32),
> -			GFP_KERNEL);
> -	if (intr->cache_irq_mask == NULL) {
> -		kfree(intr);
> -		return ERR_PTR(-ENOMEM);
> -	}
> +	intr->total_irqs = nirq;
>   
>   	intr->irq_mask = m->mdss_irqs;
>   
> @@ -436,31 +426,19 @@ struct dpu_hw_intr *dpu_hw_intr_init(void __iomem *addr,
>   
>   void dpu_hw_intr_destroy(struct dpu_hw_intr *intr)
>   {
> -	if (intr) {
> -		kfree(intr->cache_irq_mask);
> -
> -		kfree(intr->irq_cb_tbl);
> -		kfree(intr->irq_counts);
> -
> +	if (intr)
>   		kfree(intr);
> -	}
>   }
>   
>   int dpu_core_irq_register_callback(struct dpu_kms *dpu_kms, int irq_idx,
> -		struct dpu_irq_callback *register_irq_cb)
> +		void (*irq_cb)(void *arg, int irq_idx),
> +		void *irq_arg)
>   {
>   	unsigned long irq_flags;
> +	int ret;
>   
> -	if (!dpu_kms->hw_intr->irq_cb_tbl) {
> -		DPU_ERROR("invalid params\n");
> -		return -EINVAL;
> -	}
> -
> -	if (!register_irq_cb || !register_irq_cb->func) {
> -		DPU_ERROR("invalid irq_cb:%d func:%d\n",
> -				register_irq_cb != NULL,
> -				register_irq_cb ?
> -					register_irq_cb->func != NULL : -1);
> +	if (!irq_cb) {
> +		DPU_ERROR("invalid ird_idx:%d irq_cb:%ps\n", irq_idx, irq_cb);
>   		return -EINVAL;
>   	}
>   
> @@ -472,41 +450,32 @@ int dpu_core_irq_register_callback(struct dpu_kms *dpu_kms, int irq_idx,
>   	VERB("[%pS] irq_idx=%d\n", __builtin_return_address(0), irq_idx);
>   
>   	spin_lock_irqsave(&dpu_kms->hw_intr->irq_lock, irq_flags);
> -	trace_dpu_core_irq_register_callback(irq_idx, register_irq_cb);
> -	list_del_init(&register_irq_cb->list);
> -	list_add_tail(&register_irq_cb->list,
> -			&dpu_kms->hw_intr->irq_cb_tbl[irq_idx]);
> -	if (list_is_first(&register_irq_cb->list,
> -			&dpu_kms->hw_intr->irq_cb_tbl[irq_idx])) {
> -		int ret = dpu_hw_intr_enable_irq_locked(
> +
> +	if (unlikely(WARN_ON(dpu_kms->hw_intr->irq_tbl[irq_idx].cb))) {
> +		spin_unlock_irqrestore(&dpu_kms->hw_intr->irq_lock, irq_flags);
> +
> +		return -EBUSY;
> +	}
> +
> +	trace_dpu_core_irq_register_callback(irq_idx, irq_cb);
> +	dpu_kms->hw_intr->irq_tbl[irq_idx].arg = irq_arg;
> +	dpu_kms->hw_intr->irq_tbl[irq_idx].cb = irq_cb;
> +
> +	ret = dpu_hw_intr_enable_irq_locked(
>   				dpu_kms->hw_intr,
>   				irq_idx);
> -		if (ret)
> -			DPU_ERROR("Fail to enable IRQ for irq_idx:%d\n",
> +	if (ret)
> +		DPU_ERROR("Fail to enable IRQ for irq_idx:%d\n",
>   					irq_idx);
> -	}
>   	spin_unlock_irqrestore(&dpu_kms->hw_intr->irq_lock, irq_flags);
>   
>   	return 0;
>   }
>   
> -int dpu_core_irq_unregister_callback(struct dpu_kms *dpu_kms, int irq_idx,
> -		struct dpu_irq_callback *register_irq_cb)
> +int dpu_core_irq_unregister_callback(struct dpu_kms *dpu_kms, int irq_idx)
>   {
>   	unsigned long irq_flags;
> -
> -	if (!dpu_kms->hw_intr->irq_cb_tbl) {
> -		DPU_ERROR("invalid params\n");
> -		return -EINVAL;
> -	}
> -
> -	if (!register_irq_cb || !register_irq_cb->func) {
> -		DPU_ERROR("invalid irq_cb:%d func:%d\n",
> -				register_irq_cb != NULL,
> -				register_irq_cb ?
> -					register_irq_cb->func != NULL : -1);
> -		return -EINVAL;
> -	}
> +	int ret;
>   
>   	if (irq_idx < 0 || irq_idx >= dpu_kms->hw_intr->total_irqs) {
>   		DPU_ERROR("invalid IRQ index: [%d]\n", irq_idx);
> @@ -516,18 +485,16 @@ int dpu_core_irq_unregister_callback(struct dpu_kms *dpu_kms, int irq_idx,
>   	VERB("[%pS] irq_idx=%d\n", __builtin_return_address(0), irq_idx);
>   
>   	spin_lock_irqsave(&dpu_kms->hw_intr->irq_lock, irq_flags);
> -	trace_dpu_core_irq_unregister_callback(irq_idx, register_irq_cb);
> -	list_del_init(&register_irq_cb->list);
> -	/* empty callback list but interrupt is still enabled */
> -	if (list_empty(&dpu_kms->hw_intr->irq_cb_tbl[irq_idx])) {
> -		int ret = dpu_hw_intr_disable_irq_locked(
> -				dpu_kms->hw_intr,
> -				irq_idx);
> -		if (ret)
> -			DPU_ERROR("Fail to disable IRQ for irq_idx:%d\n",
> -					irq_idx);
> -		VERB("irq_idx=%d ret=%d\n", irq_idx, ret);
> -	}
> +	trace_dpu_core_irq_unregister_callback(irq_idx);
> +
> +	ret = dpu_hw_intr_disable_irq_locked(dpu_kms->hw_intr, irq_idx);
> +	if (ret)
> +		DPU_ERROR("Fail to disable IRQ for irq_idx:%d: %d\n",
> +					irq_idx, ret);
> +
> +	dpu_kms->hw_intr->irq_tbl[irq_idx].cb = NULL;
> +	dpu_kms->hw_intr->irq_tbl[irq_idx].arg = NULL;
> +
>   	spin_unlock_irqrestore(&dpu_kms->hw_intr->irq_lock, irq_flags);
>   
>   	return 0;
> @@ -537,24 +504,18 @@ int dpu_core_irq_unregister_callback(struct dpu_kms *dpu_kms, int irq_idx,
>   static int dpu_debugfs_core_irq_show(struct seq_file *s, void *v)
>   {
>   	struct dpu_kms *dpu_kms = s->private;
> -	struct dpu_irq_callback *cb;
>   	unsigned long irq_flags;
> -	int i, irq_count, cb_count;
> -
> -	if (WARN_ON(!dpu_kms->hw_intr->irq_cb_tbl))
> -		return 0;
> +	int i, irq_count;
> +	void *cb;
>   
>   	for (i = 0; i < dpu_kms->hw_intr->total_irqs; i++) {
>   		spin_lock_irqsave(&dpu_kms->hw_intr->irq_lock, irq_flags);
> -		cb_count = 0;
> -		irq_count = atomic_read(&dpu_kms->hw_intr->irq_counts[i]);
> -		list_for_each_entry(cb, &dpu_kms->hw_intr->irq_cb_tbl[i], list)
> -			cb_count++;
> +		irq_count = atomic_read(&dpu_kms->hw_intr->irq_tbl[i].count);
> +		cb = dpu_kms->hw_intr->irq_tbl[i].cb;
>   		spin_unlock_irqrestore(&dpu_kms->hw_intr->irq_lock, irq_flags);
>   
> -		if (irq_count || cb_count)
> -			seq_printf(s, "idx:%d irq:%d cb:%d\n",
> -					i, irq_count, cb_count);
> +		if (irq_count || cb)
> +			seq_printf(s, "idx:%d irq:%d cb:%ps\n", i, irq_count, cb);
>   	}
>   
>   	return 0;
> @@ -580,15 +541,8 @@ void dpu_core_irq_preinstall(struct msm_kms *kms)
>   	dpu_disable_all_irqs(dpu_kms);
>   	pm_runtime_put_sync(&dpu_kms->pdev->dev);
>   
> -	/* Create irq callbacks for all possible irq_idx */
> -	dpu_kms->hw_intr->irq_cb_tbl = kcalloc(dpu_kms->hw_intr->total_irqs,
> -			sizeof(struct list_head), GFP_KERNEL);
> -	dpu_kms->hw_intr->irq_counts = kcalloc(dpu_kms->hw_intr->total_irqs,
> -			sizeof(atomic_t), GFP_KERNEL);
> -	for (i = 0; i < dpu_kms->hw_intr->total_irqs; i++) {
> -		INIT_LIST_HEAD(&dpu_kms->hw_intr->irq_cb_tbl[i]);
> -		atomic_set(&dpu_kms->hw_intr->irq_counts[i], 0);
> -	}
> +	for (i = 0; i < dpu_kms->hw_intr->total_irqs; i++)
> +		atomic_set(&dpu_kms->hw_intr->irq_tbl[i].count, 0);
>   }
>   
>   void dpu_core_irq_uninstall(struct msm_kms *kms)
> @@ -598,7 +552,7 @@ void dpu_core_irq_uninstall(struct msm_kms *kms)
>   
>   	pm_runtime_get_sync(&dpu_kms->pdev->dev);
>   	for (i = 0; i < dpu_kms->hw_intr->total_irqs; i++)
> -		if (!list_empty(&dpu_kms->hw_intr->irq_cb_tbl[i]))
> +		if (dpu_kms->hw_intr->irq_tbl[i].cb)
>   			DPU_ERROR("irq_idx=%d still enabled/registered\n", i);
>   
>   	dpu_clear_irqs(dpu_kms);
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h
> index 1ab75cccd145..3136c1d260f8 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h
> @@ -43,19 +43,21 @@ enum dpu_hw_intr_reg {
>    * @save_irq_status:  array of IRQ status reg storage created during init
>    * @total_irqs: total number of irq_idx mapped in the hw_interrupts
>    * @irq_lock:         spinlock for accessing IRQ resources
> - * @irq_cb_tbl:       array of IRQ callbacks lists
> - * @irq_counts:       array of IRQ counts
> + * @irq_cb_tbl:       array of IRQ callbacks
>    */
>   struct dpu_hw_intr {
>   	struct dpu_hw_blk_reg_map hw;
> -	u32 *cache_irq_mask;
> +	u32 cache_irq_mask[MDP_INTR_MAX];
>   	u32 *save_irq_status;
>   	u32 total_irqs;
>   	spinlock_t irq_lock;
>   	unsigned long irq_mask;
>   
> -	struct list_head *irq_cb_tbl;
> -	atomic_t *irq_counts;
> +	struct {
> +		void (*cb)(void *arg, int irq_idx);
> +		void *arg;
> +		atomic_t count;
> +	} irq_tbl[];
>   };
>   
>   /**
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
> index 2d385b4b7f5e..b6371f1d554c 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
> @@ -66,18 +66,6 @@
>   
>   #define DPU_NAME_SIZE  12
>   
> -/*
> - * struct dpu_irq_callback - IRQ callback handlers
> - * @list: list to callback
> - * @func: intr handler
> - * @arg: argument for the handler
> - */
> -struct dpu_irq_callback {
> -	struct list_head list;
> -	void (*func)(void *arg, int irq_idx);
> -	void *arg;
> -};
> -
>   struct dpu_kms {
>   	struct msm_kms base;
>   	struct drm_device *dev;
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h
> index 54d74341e690..91fa4d3fd63f 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h
> @@ -872,26 +872,26 @@ TRACE_EVENT(dpu_pp_connect_ext_te,
>   );
>   
>   DECLARE_EVENT_CLASS(dpu_core_irq_callback_template,
> -	TP_PROTO(int irq_idx, struct dpu_irq_callback *callback),
> +	TP_PROTO(int irq_idx, void *callback),
>   	TP_ARGS(irq_idx, callback),
>   	TP_STRUCT__entry(
>   		__field(	int,				irq_idx	)
> -		__field(	struct dpu_irq_callback *,	callback)
> +		__field(	void *,				callback)
>   	),
>   	TP_fast_assign(
>   		__entry->irq_idx = irq_idx;
>   		__entry->callback = callback;
>   	),
> -	TP_printk("irq_idx:%d callback:%pK", __entry->irq_idx,
> +	TP_printk("irq_idx:%d callback:%ps", __entry->irq_idx,
>   		  __entry->callback)
>   );
>   DEFINE_EVENT(dpu_core_irq_callback_template, dpu_core_irq_register_callback,
> -	TP_PROTO(int irq_idx, struct dpu_irq_callback *callback),
> +	TP_PROTO(int irq_idx, void *callback),
>   	TP_ARGS(irq_idx, callback)
>   );
>   DEFINE_EVENT(dpu_core_irq_callback_template, dpu_core_irq_unregister_callback,
> -	TP_PROTO(int irq_idx, struct dpu_irq_callback *callback),
> -	TP_ARGS(irq_idx, callback)
> +	TP_PROTO(int irq_idx),
> +	TP_ARGS(irq_idx)
>   );
>   
>   TRACE_EVENT(dpu_core_perf_update_clk,


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