drm/msm/dpu: merge struct dpu_irq into struct dpu_hw_intr

As dpu_core_irq was merged into dpu_hw_intr, merge data structures too,
removing the need for a separate data structure.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org>
Link: https://lore.kernel.org/r/20210617222029.463045-4-dmitry.baryshkov@linaro.orgSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c

@@ -127,20 +127,19 @@ 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 *irq_obj = &dpu_kms->irq_obj;
 	struct dpu_irq_callback *cb;
 
 	VERB("irq_idx=%d\n", irq_idx);
 
-	if (list_empty(&irq_obj->irq_cb_tbl[irq_idx]))
+	if (list_empty(&dpu_kms->hw_intr->irq_cb_tbl[irq_idx]))
 		DRM_ERROR("no registered cb, idx:%d\n", irq_idx);
 
-	atomic_inc(&irq_obj->irq_counts[irq_idx]);
+	atomic_inc(&dpu_kms->hw_intr->irq_counts[irq_idx]);
 
 	/*
 	 * Perform registered function callback
 	 */
-	list_for_each_entry(cb, &irq_obj->irq_cb_tbl[irq_idx], list)
+	list_for_each_entry(cb, &dpu_kms->hw_intr->irq_cb_tbl[irq_idx], list)
 		if (cb->func)
 			cb->func(cb->arg, irq_idx);
 }
@@ -420,6 +419,10 @@ 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);
+
 		kfree(intr);
 	}
 }
@@ -429,7 +432,7 @@ int dpu_core_irq_register_callback(struct dpu_kms *dpu_kms, int irq_idx,
 {
 	unsigned long irq_flags;
 
-	if (!dpu_kms->irq_obj.irq_cb_tbl) {
+	if (!dpu_kms->hw_intr->irq_cb_tbl) {
 		DPU_ERROR("invalid params\n");
 		return -EINVAL;
 	}
@@ -453,9 +456,9 @@ int dpu_core_irq_register_callback(struct dpu_kms *dpu_kms, int irq_idx,
 	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->irq_obj.irq_cb_tbl[irq_idx]);
+			&dpu_kms->hw_intr->irq_cb_tbl[irq_idx]);
 	if (list_is_first(&register_irq_cb->list,
-			&dpu_kms->irq_obj.irq_cb_tbl[irq_idx])) {
+			&dpu_kms->hw_intr->irq_cb_tbl[irq_idx])) {
 		int ret = dpu_hw_intr_enable_irq_locked(
 				dpu_kms->hw_intr,
 				irq_idx);
@@ -473,7 +476,7 @@ int dpu_core_irq_unregister_callback(struct dpu_kms *dpu_kms, int irq_idx,
 {
 	unsigned long irq_flags;
 
-	if (!dpu_kms->irq_obj.irq_cb_tbl) {
+	if (!dpu_kms->hw_intr->irq_cb_tbl) {
 		DPU_ERROR("invalid params\n");
 		return -EINVAL;
 	}
@@ -497,7 +500,7 @@ int dpu_core_irq_unregister_callback(struct dpu_kms *dpu_kms, int irq_idx,
 	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->irq_obj.irq_cb_tbl[irq_idx])) {
+	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);
@@ -515,19 +518,18 @@ 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 *irq_obj = &dpu_kms->irq_obj;
 	struct dpu_irq_callback *cb;
 	unsigned long irq_flags;
 	int i, irq_count, cb_count;
 
-	if (WARN_ON(!irq_obj->irq_cb_tbl))
+	if (WARN_ON(!dpu_kms->hw_intr->irq_cb_tbl))
 		return 0;
 
-	for (i = 0; i < irq_obj->total_irqs; i++) {
+	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(&irq_obj->irq_counts[i]);
-		list_for_each_entry(cb, &irq_obj->irq_cb_tbl[i], list)
+		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++;
 		spin_unlock_irqrestore(&dpu_kms->hw_intr->irq_lock, irq_flags);
 
@@ -559,14 +561,13 @@ void dpu_core_irq_preinstall(struct dpu_kms *dpu_kms)
 	pm_runtime_put_sync(&dpu_kms->pdev->dev);
 
 	/* Create irq callbacks for all possible irq_idx */
-	dpu_kms->irq_obj.total_irqs = dpu_kms->hw_intr->total_irqs;
-	dpu_kms->irq_obj.irq_cb_tbl = kcalloc(dpu_kms->irq_obj.total_irqs,
+	dpu_kms->hw_intr->irq_cb_tbl = kcalloc(dpu_kms->hw_intr->total_irqs,
 			sizeof(struct list_head), GFP_KERNEL);
-	dpu_kms->irq_obj.irq_counts = kcalloc(dpu_kms->irq_obj.total_irqs,
+	dpu_kms->hw_intr->irq_counts = kcalloc(dpu_kms->hw_intr->total_irqs,
 			sizeof(atomic_t), GFP_KERNEL);
-	for (i = 0; i < dpu_kms->irq_obj.total_irqs; i++) {
-		INIT_LIST_HEAD(&dpu_kms->irq_obj.irq_cb_tbl[i]);
-		atomic_set(&dpu_kms->irq_obj.irq_counts[i], 0);
+	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);
 	}
 }
 
@@ -575,17 +576,11 @@ void dpu_core_irq_uninstall(struct dpu_kms *dpu_kms)
 	int i;
 
 	pm_runtime_get_sync(&dpu_kms->pdev->dev);
-	for (i = 0; i < dpu_kms->irq_obj.total_irqs; i++)
-		if (!list_empty(&dpu_kms->irq_obj.irq_cb_tbl[i]))
+	for (i = 0; i < dpu_kms->hw_intr->total_irqs; i++)
+		if (!list_empty(&dpu_kms->hw_intr->irq_cb_tbl[i]))
 			DPU_ERROR("irq_idx=%d still enabled/registered\n", i);
 
 	dpu_clear_irqs(dpu_kms);
 	dpu_disable_all_irqs(dpu_kms);
 	pm_runtime_put_sync(&dpu_kms->pdev->dev);
-
-	kfree(dpu_kms->irq_obj.irq_cb_tbl);
-	kfree(dpu_kms->irq_obj.irq_counts);
-	dpu_kms->irq_obj.irq_cb_tbl = NULL;
-	dpu_kms->irq_obj.irq_counts = NULL;
-	dpu_kms->irq_obj.total_irqs = 0;
 }

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h

@@ -40,6 +40,8 @@ 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
  */
 struct dpu_hw_intr {
 	struct dpu_hw_blk_reg_map hw;
@@ -48,6 +50,9 @@ struct dpu_hw_intr {
 	u32 total_irqs;
 	spinlock_t irq_lock;
 	unsigned long irq_mask;
+
+	struct list_head *irq_cb_tbl;
+	atomic_t *irq_counts;
 };
 
 /**

drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h

@@ -78,18 +78,6 @@ struct dpu_irq_callback {
 	void *arg;
 };
 
-/**
- * struct dpu_irq: IRQ structure contains callback registration info
- * @total_irq:    total number of irq_idx obtained from HW interrupts mapping
- * @irq_cb_tbl:   array of IRQ callbacks setting
- * @debugfs_file: debugfs file for irq statistics
- */
-struct dpu_irq {
-	u32 total_irqs;
-	struct list_head *irq_cb_tbl;
-	atomic_t *irq_counts;
-};
-
 struct dpu_kms {
 	struct msm_kms base;
 	struct drm_device *dev;
@@ -104,7 +92,6 @@ struct dpu_kms {
 	struct regulator *venus;
 
 	struct dpu_hw_intr *hw_intr;
-	struct dpu_irq irq_obj;
 
 	struct dpu_core_perf perf;