linux-kernel - [PATCH v2 04/12] dmaengine: fsl-edma: remove v3 from enum edma

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Message-Id: <20230529200453.1423796-5-Frank.Li@nxp.com>
Date:   Mon, 29 May 2023 16:04:45 -0400
From:   Frank Li <Frank.Li@....com>
To:     frank.li@....com, krzysztof.kozlowski+dt@...aro.org,
        peng.fan@....com, vkoul@...nel.org
Cc:     devicetree@...r.kernel.org, dmaengine@...r.kernel.org,
        imx@...ts.linux.dev, joy.zou@....com, linux-kernel@...r.kernel.org,
        robh+dt@...nel.org, shenwei.wang@....com
Subject: [PATCH v2 04/12] dmaengine: fsl-edma: remove v3 from enum edma_version

The new IP of edma refers to version 3 in the hardware documentation.
However, the presence of "v3" in the code is merely a software indication
to differentiate between certain chips. To prevent confusion in the
future, this commit removes "v3" from the enum edma_version.

Signed-off-by: Frank Li <Frank.Li@....com>
---
 drivers/dma/fsl-edma-common.c | 2 +-
 drivers/dma/fsl-edma-common.h | 2 +-
 drivers/dma/fsl-edma-main.c   | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c
index 10dcc1435d37..e5c7497c1ff3 100644
--- a/drivers/dma/fsl-edma-common.c
+++ b/drivers/dma/fsl-edma-common.c
@@ -120,7 +120,7 @@ void fsl_edma_chan_mux(struct fsl_edma_chan *fsl_chan,
 	muxaddr = fsl_chan->edma->muxbase[ch / chans_per_mux];
 	slot = EDMAMUX_CHCFG_SOURCE(slot);
 
-	if (fsl_chan->edma->drvdata->version == v3)
+	if (fsl_chan->edma->drvdata->flags & FSL_EDMA_DRV_CONFIG32)
 		mux_configure32(fsl_chan, muxaddr, ch_off, slot, enable);
 	else
 		mux_configure8(fsl_chan, muxaddr, ch_off, slot, enable);
diff --git a/drivers/dma/fsl-edma-common.h b/drivers/dma/fsl-edma-common.h
index db137a8c558d..2f13e687a721 100644
--- a/drivers/dma/fsl-edma-common.h
+++ b/drivers/dma/fsl-edma-common.h
@@ -141,11 +141,11 @@ struct fsl_edma_desc {
 enum edma_version {
 	v1, /* 32ch, Vybrid, mpc57x, etc */
 	v2, /* 64ch Coldfire */
-	v3, /* 32ch, i.mx7ulp */
 };
 
 #define FSL_EDMA_DRV_HAS_DMACLK		BIT(0)
 #define FSL_EDMA_DRV_MUX_SWAP		BIT(1)
+#define FSL_EDMA_DRV_CONFIG32		BIT(2)
 struct fsl_edma_drvdata {
 	enum edma_version	version;
 	u32			dmamuxs;
diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c
index f5cf95d185f8..31531b8bde78 100644
--- a/drivers/dma/fsl-edma-main.c
+++ b/drivers/dma/fsl-edma-main.c
@@ -238,9 +238,9 @@ static struct fsl_edma_drvdata ls1028a_data = {
 };
 
 static struct fsl_edma_drvdata imx7ulp_data = {
-	.version = v3,
+	.version = v1,
 	.dmamuxs = 1,
-	.flags = FSL_EDMA_DRV_HAS_DMACLK,
+	.flags = FSL_EDMA_DRV_HAS_DMACLK | FSL_EDMA_DRV_CONFIG32,
 	.setup_irq = fsl_edma2_irq_init,
 };
 
-- 
2.34.1