From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
To: Bjorn Andersson <bjorn.andersson@linaro.org>,
Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run>,
Abhinav Kumar <abhinavk@codeaurora.org>
Cc: Jonathan Marek <jonathan@marek.ca>,
Stephen Boyd <sboyd@kernel.org>, David Airlie <airlied@linux.ie>,
Daniel Vetter <daniel@ffwll.ch>,
linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
freedreno@lists.freedesktop.org
Subject: [PATCH v2 2/7] drm/msm/dpu: don't clear IRQ register twice
Date: Fri, 18 Jun 2021 01:20:24 +0300 [thread overview]
Message-ID: <20210617222029.463045-3-dmitry.baryshkov@linaro.org> (raw)
In-Reply-To: <20210617222029.463045-1-dmitry.baryshkov@linaro.org>
We already clear the IRQ status register before processing IRQs, so do
not clear the register again. Especially do not clear the IRQ status
_after_ processing the IRQ as this way we can loose the event.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
.../gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c | 17 -----------------
1 file changed, 17 deletions(-)
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 2437b0c7c073..28e9b0d448db 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
@@ -120,21 +120,6 @@ static const struct dpu_intr_reg dpu_intr_set[] = {
#define DPU_IRQ_REG(irq_idx) (irq_idx / 32)
#define DPU_IRQ_MASK(irq_idx) (BIT(irq_idx % 32))
-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_REG(irq_idx);
- DPU_REG_WRITE(&intr->hw, dpu_intr_set[reg_idx].clr_off, DPU_IRQ_MASK(irq_idx));
-
- /* ensure register writes go through */
- wmb();
-}
-
/**
* dpu_core_irq_callback_handler - dispatch core interrupts
* @arg: private data of callback handler
@@ -203,8 +188,6 @@ irqreturn_t dpu_core_irq(struct dpu_kms *dpu_kms)
dpu_core_irq_callback_handler(dpu_kms, irq_idx);
- dpu_hw_intr_clear_intr_status_nolock(intr, irq_idx);
-
/*
* When callback finish, clear the irq_status
* with the matching mask. Once irq_status
--
2.30.2
next prev parent reply other threads:[~2021-06-17 22:20 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-17 22:20 [PARCH v2 0/7] drm/msm/dpu: merge dpu_core_irq into dpu_hw_interrupts Dmitry Baryshkov
2021-06-17 22:20 ` [PATCH v2 1/7] drm/msm/dpu: squash " Dmitry Baryshkov
2021-08-18 3:08 ` [Freedreno] " abhinavk
2021-06-17 22:20 ` Dmitry Baryshkov [this message]
2021-08-18 3:11 ` [Freedreno] [PATCH v2 2/7] drm/msm/dpu: don't clear IRQ register twice abhinavk
2021-06-17 22:20 ` [PATCH v2 3/7] drm/msm/dpu: merge struct dpu_irq into struct dpu_hw_intr Dmitry Baryshkov
2021-08-18 3:20 ` [Freedreno] " abhinavk
2021-06-17 22:20 ` [PATCH v2 4/7] drm/msm/dpu: allow just single IRQ callback Dmitry Baryshkov
2021-08-18 3:30 ` [Freedreno] " abhinavk
2022-01-19 0:10 ` abhinavk
2022-02-01 4:02 ` Dmitry Baryshkov
2021-06-17 22:20 ` [PATCH v2 5/7] drm/msm/dpu: remove extra wrappers around dpu_core_irq Dmitry Baryshkov
2021-08-18 3:30 ` [Freedreno] " abhinavk
2021-06-17 22:20 ` [PATCH v2 6/7] drm/msm/dpu: get rid of dpu_encoder_helper_(un)register_irq Dmitry Baryshkov
2021-08-18 3:35 ` [Freedreno] " abhinavk
2021-06-17 22:20 ` [PATCH v2 7/7] drm/msm/dpu: remove struct dpu_encoder_irq and enum dpu_intr_idx Dmitry Baryshkov
2021-08-18 3:40 ` [Freedreno] " abhinavk
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