From: Jassi Brar <jassi.brar@samsung.com>
Date: Mon, 3 Jan 2011 10:36:25 +0000 (+0900)
Subject: ARM: S3C64XX: Clear DMA_HALT upon start
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d03e119c08359f9217154d6a4201689639fe29c8;p=mv-sheeva.git

ARM: S3C64XX: Clear DMA_HALT upon start

The stop function sets the DMA_HALT bit, which prevents
the DMA transfer to resume after stop, for example during
audio PAUSE/PLAY cycle. Clear the HALT bit during start.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
---

diff --git a/arch/arm/mach-s3c64xx/dma.c b/arch/arm/mach-s3c64xx/dma.c
index e7d03ab41d8..d9aa072ecee 100644
--- a/arch/arm/mach-s3c64xx/dma.c
+++ b/arch/arm/mach-s3c64xx/dma.c
@@ -212,6 +212,7 @@ static int s3c64xx_dma_start(struct s3c2410_dma_chan *chan)
 
 	config = readl(chan->regs + PL080S_CH_CONFIG);
 	config |= PL080_CONFIG_ENABLE;
+	config &= ~PL080_CONFIG_HALT;
 
 	pr_debug("%s: writing config %08x\n", __func__, config);
 	writel(config, chan->regs + PL080S_CH_CONFIG);