Always call dpu_hw_intr_clear_intr_status_nolock() from the
dpu_hw_intr_dispatch_irqs(). This simplifies the callback function
(which call clears the interrupts anyway) and enforces clearing the hw
interrupt status.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c | 9 -----
.../gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c | 39 +++++++++----------
.../gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h | 9 -----
3 files changed, 18 insertions(+), 39 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 54b34746a587..fd11a2aeab6c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
@@ -41,15 +41,6 @@ static void dpu_core_irq_callback_handler(void *arg, int irq_idx)
if (cb->func)
cb->func(cb->arg, irq_idx);
spin_unlock_irqrestore(&dpu_kms->irq_obj.cb_lock, irq_flags);
-
- /*
- * Clear pending interrupt status in HW.
- * NOTE: dpu_core_irq_callback_handler is protected by top-level
- * spinlock, so it is safe to clear any interrupt status here.
- */
- dpu_kms->hw_intr->ops.clear_intr_status_nolock(
- dpu_kms->hw_intr,
- irq_idx);
}
int dpu_core_irq_idx_lookup(struct dpu_kms *dpu_kms,
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 cf9bfd45aa59..8bd22e060437 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
@@ -1362,6 +1362,22 @@ static int dpu_hw_intr_irqidx_lookup(struct dpu_hw_intr *intr,
return -EINVAL;
}
+static void dpu_hw_intr_clear_intr_status_nolock(struct dpu_hw_intr *intr,
+ int irq_idx)
+{
+ int reg_idx;
+
+ if (!intr)
+ return;
+
+ reg_idx = dpu_irq_map[irq_idx].reg_idx;
+ DPU_REG_WRITE(&intr->hw, dpu_intr_set[reg_idx].clr_off,
+ dpu_irq_map[irq_idx].irq_mask);
+
+ /* ensure register writes go through */
+ wmb();
+}
+
static void dpu_hw_intr_dispatch_irq(struct dpu_hw_intr *intr,
void (*cbfunc)(void *, int),
void *arg)
@@ -1430,9 +1446,8 @@ static void dpu_hw_intr_dispatch_irq(struct dpu_hw_intr *intr,
*/
if (cbfunc)
cbfunc(arg, irq_idx);
- else
- intr->ops.clear_intr_status_nolock(
- intr, irq_idx);
+
+ dpu_hw_intr_clear_intr_status_nolock(intr, irq_idx);
/*
* When callback finish, clear the irq_status
@@ -1597,23 +1612,6 @@ static int dpu_hw_intr_disable_irqs(struct dpu_hw_intr *intr)
return 0;
}
-
-static void dpu_hw_intr_clear_intr_status_nolock(struct dpu_hw_intr *intr,
- int irq_idx)
-{
- int reg_idx;
-
- if (!intr)
- return;
-
- reg_idx = dpu_irq_map[irq_idx].reg_idx;
- DPU_REG_WRITE(&intr->hw, dpu_intr_set[reg_idx].clr_off,
- dpu_irq_map[irq_idx].irq_mask);
-
- /* ensure register writes go through */
- wmb();
-}
-
static u32 dpu_hw_intr_get_interrupt_status(struct dpu_hw_intr *intr,
int irq_idx, bool clear)
{
@@ -1655,7 +1653,6 @@ static void __setup_intr_ops(struct dpu_hw_intr_ops *ops)
ops->dispatch_irqs = dpu_hw_intr_dispatch_irq;
ops->clear_all_irqs = dpu_hw_intr_clear_irqs;
ops->disable_all_irqs = dpu_hw_intr_disable_irqs;
- ops->clear_intr_status_nolock = dpu_hw_intr_clear_intr_status_nolock;
ops->get_interrupt_status = dpu_hw_intr_get_interrupt_status;
}
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 5a1c304ba93f..5bade5637ecc 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h
@@ -142,15 +142,6 @@ struct dpu_hw_intr_ops {
void (*cbfunc)(void *arg, int irq_idx),
void *arg);
- /**
- * clear_intr_status_nolock() - clears the HW interrupts without lock
- * @intr: HW interrupt handle
- * @irq_idx: Lookup irq index return from irq_idx_lookup
- */
- void (*clear_intr_status_nolock)(
- struct dpu_hw_intr *intr,
- int irq_idx);
-
/**
* get_interrupt_status - Gets HW interrupt status, and clear if set,
* based on given lookup IRQ index.
--
2.30.2
