linux-kernel - [PATCH v2 3/7] dmaengine: fsl-edma-common: move dmamux register to another single function

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20190527085118.40423-4-yibin.gong@nxp.com>
Date:   Mon, 27 May 2019 16:51:14 +0800
From:   yibin.gong@....com
To:     robh@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        festevam@...il.com, mark.rutland@....com, vkoul@...nel.org,
        dan.j.williams@...el.com
Cc:     linux-imx@....com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org,
        devicetree@...r.kernel.org, kernel@...gutronix.de
Subject: [PATCH v2 3/7] dmaengine: fsl-edma-common: move dmamux register to another single function

From: Robin Gong <yibin.gong@....com>

Prepare for edmav2 on i.mx7ulp whose dmamux register is 32bit. No function
impacted.

Signed-off-by: Robin Gong <yibin.gong@....com>
---
 drivers/dma/fsl-edma-common.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c
index c9a17fc..bb24251 100644
--- a/drivers/dma/fsl-edma-common.c
+++ b/drivers/dma/fsl-edma-common.c
@@ -77,6 +77,19 @@ void fsl_edma_disable_request(struct fsl_edma_chan *fsl_chan)
 }
 EXPORT_SYMBOL_GPL(fsl_edma_disable_request);
 
+static void mux_configure8(struct fsl_edma_chan *fsl_chan, void __iomem *addr,
+			   u32 off, u32 slot, bool enable)
+{
+	u8 val8;
+
+	if (enable)
+		val8 = EDMAMUX_CHCFG_ENBL | slot;
+	else
+		val8 = EDMAMUX_CHCFG_DIS;
+
+	iowrite8(val8, addr + off);
+}
+
 void fsl_edma_chan_mux(struct fsl_edma_chan *fsl_chan,
 			unsigned int slot, bool enable)
 {
@@ -89,10 +102,7 @@ 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 (enable)
-		iowrite8(EDMAMUX_CHCFG_ENBL | slot, muxaddr + ch_off);
-	else
-		iowrite8(EDMAMUX_CHCFG_DIS, muxaddr + ch_off);
+	mux_configure8(fsl_chan, muxaddr, ch_off, slot, enable);
 }
 EXPORT_SYMBOL_GPL(fsl_edma_chan_mux);
 
-- 
2.7.4