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* [PATCH] drm/msm/dpu: simplify dpu_core_irq_en/disable helpers
@ 2021-05-11 14:15 Dmitry Baryshkov
  2021-05-16 20:27 ` Dmitry Baryshkov
  0 siblings, 1 reply; 2+ messages in thread
From: Dmitry Baryshkov @ 2021-05-11 14:15 UTC (permalink / raw)
  To: Bjorn Andersson, Rob Clark, Sean Paul, Abhinav Kumar
  Cc: Jonathan Marek, Stephen Boyd, David Airlie, Daniel Vetter,
	linux-arm-msm, dri-devel, freedreno

dpu_core_irq_en/disable helpers are always called with the irq_count
equal to 1. Merge them with _dpu_core_en/disable functions and make them
handle just one interrupt index at a time.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c | 50 ++++----------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h | 20 ++++----
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c  |  4 +-
 3 files changed, 18 insertions(+), 56 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
index c10761ea191c..0ee9ac21e24a 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
@@ -63,11 +63,11 @@ int dpu_core_irq_idx_lookup(struct dpu_kms *dpu_kms,
 }
 
 /**
- * _dpu_core_irq_enable - enable core interrupt given by the index
+ * dpu_core_irq_enable - enable core interrupt given by the index
  * @dpu_kms:		Pointer to dpu kms context
  * @irq_idx:		interrupt index
  */
-static int _dpu_core_irq_enable(struct dpu_kms *dpu_kms, int irq_idx)
+int dpu_core_irq_enable(struct dpu_kms *dpu_kms, int irq_idx)
 {
 	unsigned long irq_flags;
 	int ret = 0, enable_count;
@@ -85,6 +85,8 @@ static int _dpu_core_irq_enable(struct dpu_kms *dpu_kms, int irq_idx)
 	}
 
 	enable_count = atomic_read(&dpu_kms->irq_obj.enable_counts[irq_idx]);
+	if (enable_count)
+		DRM_ERROR("irq_idx=%d enable_count=%d\n", irq_idx, enable_count);
 	DRM_DEBUG_KMS("irq_idx=%d enable_count=%d\n", irq_idx, enable_count);
 	trace_dpu_core_irq_enable_idx(irq_idx, enable_count);
 
@@ -109,31 +111,12 @@ static int _dpu_core_irq_enable(struct dpu_kms *dpu_kms, int irq_idx)
 	return ret;
 }
 
-int dpu_core_irq_enable(struct dpu_kms *dpu_kms, int *irq_idxs, u32 irq_count)
-{
-	int i, ret = 0, counts;
-
-	if (!irq_idxs || !irq_count) {
-		DPU_ERROR("invalid params\n");
-		return -EINVAL;
-	}
-
-	counts = atomic_read(&dpu_kms->irq_obj.enable_counts[irq_idxs[0]]);
-	if (counts)
-		DRM_ERROR("irq_idx=%d enable_count=%d\n", irq_idxs[0], counts);
-
-	for (i = 0; (i < irq_count) && !ret; i++)
-		ret = _dpu_core_irq_enable(dpu_kms, irq_idxs[i]);
-
-	return ret;
-}
-
 /**
- * _dpu_core_irq_disable - disable core interrupt given by the index
+ * dpu_core_irq_disable - disable core interrupt given by the index
  * @dpu_kms:		Pointer to dpu kms context
  * @irq_idx:		interrupt index
  */
-static int _dpu_core_irq_disable(struct dpu_kms *dpu_kms, int irq_idx)
+int dpu_core_irq_disable(struct dpu_kms *dpu_kms, int irq_idx)
 {
 	int ret = 0, enable_count;
 
@@ -148,6 +131,8 @@ static int _dpu_core_irq_disable(struct dpu_kms *dpu_kms, int irq_idx)
 	}
 
 	enable_count = atomic_read(&dpu_kms->irq_obj.enable_counts[irq_idx]);
+	if (enable_count > 1)
+		DRM_ERROR("irq_idx=%d enable_count=%d\n", irq_idx, enable_count);
 	DRM_DEBUG_KMS("irq_idx=%d enable_count=%d\n", irq_idx, enable_count);
 	trace_dpu_core_irq_disable_idx(irq_idx, enable_count);
 
@@ -164,25 +149,6 @@ static int _dpu_core_irq_disable(struct dpu_kms *dpu_kms, int irq_idx)
 	return ret;
 }
 
-int dpu_core_irq_disable(struct dpu_kms *dpu_kms, int *irq_idxs, u32 irq_count)
-{
-	int i, ret = 0, counts;
-
-	if (!irq_idxs || !irq_count) {
-		DPU_ERROR("invalid params\n");
-		return -EINVAL;
-	}
-
-	counts = atomic_read(&dpu_kms->irq_obj.enable_counts[irq_idxs[0]]);
-	if (counts == 2)
-		DRM_ERROR("irq_idx=%d enable_count=%d\n", irq_idxs[0], counts);
-
-	for (i = 0; (i < irq_count) && !ret; i++)
-		ret = _dpu_core_irq_disable(dpu_kms, irq_idxs[i]);
-
-	return ret;
-}
-
 u32 dpu_core_irq_read(struct dpu_kms *dpu_kms, int irq_idx, bool clear)
 {
 	if (!dpu_kms->hw_intr)
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 e30775e6585b..2ac781738e83 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h
@@ -43,34 +43,30 @@ int dpu_core_irq_idx_lookup(
 		uint32_t instance_idx);
 
 /**
- * dpu_core_irq_enable - IRQ helper function for enabling one or more IRQs
+ * dpu_core_irq_enable - IRQ helper function for enabling IRQ
  * @dpu_kms:		DPU handle
- * @irq_idxs:		Array of irq index
- * @irq_count:		Number of irq_idx provided in the array
+ * @irq_idx:		irq index
  * @return:		0 for success enabling IRQ, otherwise failure
  *
  * This function increments count on each enable and decrements on each
- * disable.  Interrupts is enabled if count is 0 before increment.
+ * disable.  Interrupt is enabled if count is 0 before increment.
  */
 int dpu_core_irq_enable(
 		struct dpu_kms *dpu_kms,
-		int *irq_idxs,
-		uint32_t irq_count);
+		int irq_idxs);
 
 /**
- * dpu_core_irq_disable - IRQ helper function for disabling one of more IRQs
+ * dpu_core_irq_disable - IRQ helper function for disabling IRQ
  * @dpu_kms:		DPU handle
- * @irq_idxs:		Array of irq index
- * @irq_count:		Number of irq_idx provided in the array
+ * @irq_idx:		irq index
  * @return:		0 for success disabling IRQ, otherwise failure
  *
  * This function increments count on each enable and decrements on each
- * disable.  Interrupts is disabled if count is 0 after decrement.
+ * disable.  Interrupt is disabled if count is 0 after decrement.
  */
 int dpu_core_irq_disable(
 		struct dpu_kms *dpu_kms,
-		int *irq_idxs,
-		uint32_t irq_count);
+		int irq_idxs);
 
 /**
  * dpu_core_irq_read - IRQ helper function for reading IRQ status
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 72eb245341bf..e365815e6e28 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -367,7 +367,7 @@ int dpu_encoder_helper_register_irq(struct dpu_encoder_phys *phys_enc,
 		return ret;
 	}
 
-	ret = dpu_core_irq_enable(phys_enc->dpu_kms, &irq->irq_idx, 1);
+	ret = dpu_core_irq_enable(phys_enc->dpu_kms, irq->irq_idx);
 	if (ret) {
 		DRM_ERROR("enable failed id=%u, intr=%d, hw=%d, irq=%d",
 			  DRMID(phys_enc->parent), intr_idx, irq->hw_idx,
@@ -400,7 +400,7 @@ int dpu_encoder_helper_unregister_irq(struct dpu_encoder_phys *phys_enc,
 		return 0;
 	}
 
-	ret = dpu_core_irq_disable(phys_enc->dpu_kms, &irq->irq_idx, 1);
+	ret = dpu_core_irq_disable(phys_enc->dpu_kms, irq->irq_idx);
 	if (ret) {
 		DRM_ERROR("disable failed id=%u, intr=%d, hw=%d, irq=%d ret=%d",
 			  DRMID(phys_enc->parent), intr_idx, irq->hw_idx,
-- 
2.30.2


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