linux-kernel - [PATCH v4 08/12] dmaengine: fsl-edma: move clearing of register interrupt into setup

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Message-Id: <20230612203418.2017769-9-Frank.Li@nxp.com>
Date:   Mon, 12 Jun 2023 16:34:14 -0400
From:   Frank Li <Frank.Li@....com>
To:     vkoul@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, dmaengine@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        peng.fan@....com, joy.zou@....com, shenwei.wang@....com,
        imx@...ts.linux.dev
Subject: [PATCH v4 08/12] dmaengine: fsl-edma: move clearing of register interrupt into setup_irq function

This accommodates differences in the register layout of EDMA v3 by moving
the clearing of register interrupts into the platform-specific set_irq
function. This should ensure better compatibility with EDMA v3.

Signed-off-by: Frank Li <Frank.Li@....com>
---
 drivers/dma/fsl-edma-main.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c
index 503e5ad5a8dd..e67aec3f76b5 100644
--- a/drivers/dma/fsl-edma-main.c
+++ b/drivers/dma/fsl-edma-main.c
@@ -113,6 +113,8 @@ fsl_edma_irq_init(struct platform_device *pdev, struct fsl_edma_engine *fsl_edma
 {
 	int ret;
 
+	edma_writel(fsl_edma, ~0, fsl_edma->regs.intl);
+
 	fsl_edma->txirq = platform_get_irq_byname(pdev, "edma-tx");
 	if (fsl_edma->txirq < 0)
 		return fsl_edma->txirq;
@@ -154,6 +156,8 @@ fsl_edma2_irq_init(struct platform_device *pdev,
 	int i, ret, irq;
 	int count;
 
+	edma_writel(fsl_edma, ~0, fsl_edma->regs.intl);
+
 	count = platform_irq_count(pdev);
 	dev_dbg(&pdev->dev, "%s Found %d interrupts\r\n", __func__, count);
 	if (count <= 2) {
@@ -311,7 +315,6 @@ static int fsl_edma_probe(struct platform_device *pdev)
 		fsl_edma_chan_mux(fsl_chan, 0, false);
 	}
 
-	edma_writel(fsl_edma, ~0, regs->intl);
 	ret = fsl_edma->drvdata->setup_irq(pdev, fsl_edma);
 	if (ret)
 		return ret;
-- 
2.34.1