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From: Frank Li <Frank.Li@nxp.com>
To: frank.li@nxp.com, krzysztof.kozlowski+dt@linaro.org,
	peng.fan@nxp.com, vkoul@kernel.org
Cc: devicetree@vger.kernel.org, dmaengine@vger.kernel.org,
	imx@lists.linux.dev, joy.zou@nxp.com,
	linux-kernel@vger.kernel.org, robh+dt@kernel.org,
	shenwei.wang@nxp.com
Subject: [PATCH v2 05/12] dmaengine: fsl-edma: move common IRQ handler to common.c
Date: Mon, 29 May 2023 16:04:46 -0400	[thread overview]
Message-ID: <20230529200453.1423796-6-Frank.Li@nxp.com> (raw)
In-Reply-To: <20230529200453.1423796-1-Frank.Li@nxp.com>

Move the common part of IRQ handler from fsl-edma-main.c and
mcf-edma-main.c to fsl-edma-common.c. This eliminates redundant code, as
the both files contains mostly identical code.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
 drivers/dma/fsl-edma-common.c | 26 ++++++++++++++++++++++++++
 drivers/dma/fsl-edma-common.h |  7 +++++++
 drivers/dma/fsl-edma-main.c   | 30 ++----------------------------
 drivers/dma/mcf-edma-main.c   | 30 ++----------------------------
 4 files changed, 37 insertions(+), 56 deletions(-)

diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c
index e5c7497c1ff3..839471c42758 100644
--- a/drivers/dma/fsl-edma-common.c
+++ b/drivers/dma/fsl-edma-common.c
@@ -42,6 +42,32 @@
 
 #define EDMA_TCD		0x1000
 
+void fsl_edma_tx_chan_handler(struct fsl_edma_chan *fsl_chan)
+{
+	spin_lock(&fsl_chan->vchan.lock);
+
+	if (!fsl_chan->edesc) {
+		/* terminate_all called before */
+		spin_unlock(&fsl_chan->vchan.lock);
+		return;
+	}
+
+	if (!fsl_chan->edesc->iscyclic) {
+		list_del(&fsl_chan->edesc->vdesc.node);
+		vchan_cookie_complete(&fsl_chan->edesc->vdesc);
+		fsl_chan->edesc = NULL;
+		fsl_chan->status = DMA_COMPLETE;
+		fsl_chan->idle = true;
+	} else {
+		vchan_cyclic_callback(&fsl_chan->edesc->vdesc);
+	}
+
+	if (!fsl_chan->edesc)
+		fsl_edma_xfer_desc(fsl_chan);
+
+	spin_unlock(&fsl_chan->vchan.lock);
+}
+
 static void fsl_edma_enable_request(struct fsl_edma_chan *fsl_chan)
 {
 	struct edma_regs *regs = &fsl_chan->edma->regs;
diff --git a/drivers/dma/fsl-edma-common.h b/drivers/dma/fsl-edma-common.h
index 2f13e687a721..71e19e20f1cb 100644
--- a/drivers/dma/fsl-edma-common.h
+++ b/drivers/dma/fsl-edma-common.h
@@ -223,6 +223,13 @@ static inline struct fsl_edma_desc *to_fsl_edma_desc(struct virt_dma_desc *vd)
 	return container_of(vd, struct fsl_edma_desc, vdesc);
 }
 
+static inline void fsl_edma_err_chan_handler(struct fsl_edma_chan *fsl_chan)
+{
+	fsl_chan->status = DMA_ERROR;
+	fsl_chan->idle = true;
+}
+
+void fsl_edma_tx_chan_handler(struct fsl_edma_chan *fsl_chan);
 void fsl_edma_disable_request(struct fsl_edma_chan *fsl_chan);
 void fsl_edma_chan_mux(struct fsl_edma_chan *fsl_chan,
 			unsigned int slot, bool enable);
diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c
index 31531b8bde78..9c0b6fb4cb8f 100644
--- a/drivers/dma/fsl-edma-main.c
+++ b/drivers/dma/fsl-edma-main.c
@@ -33,7 +33,6 @@ static irqreturn_t fsl_edma_tx_handler(int irq, void *dev_id)
 	struct fsl_edma_engine *fsl_edma = dev_id;
 	unsigned int intr, ch;
 	struct edma_regs *regs = &fsl_edma->regs;
-	struct fsl_edma_chan *fsl_chan;
 
 	intr = edma_readl(fsl_edma, regs->intl);
 	if (!intr)
@@ -42,31 +41,7 @@ static irqreturn_t fsl_edma_tx_handler(int irq, void *dev_id)
 	for (ch = 0; ch < fsl_edma->n_chans; ch++) {
 		if (intr & (0x1 << ch)) {
 			edma_writeb(fsl_edma, EDMA_CINT_CINT(ch), regs->cint);
-
-			fsl_chan = &fsl_edma->chans[ch];
-
-			spin_lock(&fsl_chan->vchan.lock);
-
-			if (!fsl_chan->edesc) {
-				/* terminate_all called before */
-				spin_unlock(&fsl_chan->vchan.lock);
-				continue;
-			}
-
-			if (!fsl_chan->edesc->iscyclic) {
-				list_del(&fsl_chan->edesc->vdesc.node);
-				vchan_cookie_complete(&fsl_chan->edesc->vdesc);
-				fsl_chan->edesc = NULL;
-				fsl_chan->status = DMA_COMPLETE;
-				fsl_chan->idle = true;
-			} else {
-				vchan_cyclic_callback(&fsl_chan->edesc->vdesc);
-			}
-
-			if (!fsl_chan->edesc)
-				fsl_edma_xfer_desc(fsl_chan);
-
-			spin_unlock(&fsl_chan->vchan.lock);
+			fsl_edma_tx_chan_handler(&fsl_edma->chans[ch]);
 		}
 	}
 	return IRQ_HANDLED;
@@ -86,8 +61,7 @@ static irqreturn_t fsl_edma_err_handler(int irq, void *dev_id)
 		if (err & (0x1 << ch)) {
 			fsl_edma_disable_request(&fsl_edma->chans[ch]);
 			edma_writeb(fsl_edma, EDMA_CERR_CERR(ch), regs->cerr);
-			fsl_edma->chans[ch].status = DMA_ERROR;
-			fsl_edma->chans[ch].idle = true;
+			fsl_edma_err_chan_handler(&fsl_edma->chans[ch]);
 		}
 	}
 	return IRQ_HANDLED;
diff --git a/drivers/dma/mcf-edma-main.c b/drivers/dma/mcf-edma-main.c
index ebd8733f72ad..af1b0e8a3021 100644
--- a/drivers/dma/mcf-edma-main.c
+++ b/drivers/dma/mcf-edma-main.c
@@ -19,7 +19,6 @@ static irqreturn_t mcf_edma_tx_handler(int irq, void *dev_id)
 	struct fsl_edma_engine *mcf_edma = dev_id;
 	struct edma_regs *regs = &mcf_edma->regs;
 	unsigned int ch;
-	struct fsl_edma_chan *mcf_chan;
 	u64 intmap;
 
 	intmap = ioread32(regs->inth);
@@ -31,31 +30,7 @@ static irqreturn_t mcf_edma_tx_handler(int irq, void *dev_id)
 	for (ch = 0; ch < mcf_edma->n_chans; ch++) {
 		if (intmap & BIT(ch)) {
 			iowrite8(EDMA_MASK_CH(ch), regs->cint);
-
-			mcf_chan = &mcf_edma->chans[ch];
-
-			spin_lock(&mcf_chan->vchan.lock);
-
-			if (!mcf_chan->edesc) {
-				/* terminate_all called before */
-				spin_unlock(&mcf_chan->vchan.lock);
-				continue;
-			}
-
-			if (!mcf_chan->edesc->iscyclic) {
-				list_del(&mcf_chan->edesc->vdesc.node);
-				vchan_cookie_complete(&mcf_chan->edesc->vdesc);
-				mcf_chan->edesc = NULL;
-				mcf_chan->status = DMA_COMPLETE;
-				mcf_chan->idle = true;
-			} else {
-				vchan_cyclic_callback(&mcf_chan->edesc->vdesc);
-			}
-
-			if (!mcf_chan->edesc)
-				fsl_edma_xfer_desc(mcf_chan);
-
-			spin_unlock(&mcf_chan->vchan.lock);
+			fsl_edma_tx_chan_handler(&mcf_edma->chans[ch]);
 		}
 	}
 
@@ -76,8 +51,7 @@ static irqreturn_t mcf_edma_err_handler(int irq, void *dev_id)
 		if (err & BIT(ch)) {
 			fsl_edma_disable_request(&mcf_edma->chans[ch]);
 			iowrite8(EDMA_CERR_CERR(ch), regs->cerr);
-			mcf_edma->chans[ch].status = DMA_ERROR;
-			mcf_edma->chans[ch].idle = true;
+			fsl_edma_err_chan_handler(&mcf_edma->chans[ch]);
 		}
 	}
 
-- 
2.34.1


  parent reply	other threads:[~2023-05-29 20:05 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-29 20:04 [PATCH v2 00/12] dmaengine: edma: add freescale edma v3 support Frank Li
2023-05-29 20:04 ` [PATCH v2 01/12] dmaengine: fsl-edma: clean up EXPORT_SYMBOL_GPL in fsl-edma-common.c Frank Li
2023-05-31  6:45   ` Peng Fan
2023-05-29 20:04 ` [PATCH v2 02/12] dmaengine: fsl-edma: clean up fsl_edma_irq_exit() Frank Li
2023-05-31  6:46   ` Peng Fan
2023-05-29 20:04 ` [PATCH v2 03/12] dmaengine: fsl-edma: transition from bool fields to bitmask flags in drvdata Frank Li
2023-05-31  6:47   ` Peng Fan
2023-05-29 20:04 ` [PATCH v2 04/12] dmaengine: fsl-edma: remove v3 from enum edma_version Frank Li
2023-05-31  6:50   ` Peng Fan
2023-05-31 12:50     ` Frank Li
2023-05-29 20:04 ` Frank Li [this message]
2023-05-29 20:04 ` [PATCH v2 06/12] dmaengine: fsl-edma: simply ATTR_DSIZE and ATTR_SSIZE by using ffs() Frank Li
2023-05-29 20:04 ` [PATCH v2 07/12] dmaengine: fsl-edma: refactor using devm_clk_get_enabled Frank Li
2023-05-29 20:04 ` [PATCH v2 08/12] dmaengine: fsl-edma: move clearing of register interrupt into setup_irq function Frank Li
2023-05-29 20:04 ` [PATCH v2 09/12] dmaengine: fsl-edma: refactor chan_name setup and safety Frank Li
2023-05-29 20:04 ` [PATCH v2 10/12] dmaengine: fsl-edma: move tcd into struct fsl_dma_chan Frank Li
2023-05-29 20:04 ` [PATCH v2 11/12] dmaengine: fsl-edma: integrate v3 support Frank Li
2023-05-29 20:04 ` [PATCH v2 12/12] dt-bindings: fsl-dma: fsl-edma: add edma3 compatible string Frank Li
2023-05-30 13:08   ` Krzysztof Kozlowski
2023-05-30 13:57     ` Frank Li
2023-05-30 14:41       ` Krzysztof Kozlowski

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