From: jassisinghbrar@gmail.com (Jassi Brar)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: S3C64xx: Clear DMA_HALT upon start
Date: Mon, 3 Jan 2011 10:53:35 +0900 [thread overview]
Message-ID: <1294019615-18532-1-git-send-email-jassisinghbrar@gmail.com> (raw)
From: Jassi Brar <jassi.brar@samsung.com>
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>
---
arch/arm/mach-s3c64xx/dma.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-s3c64xx/dma.c b/arch/arm/mach-s3c64xx/dma.c
index e7d03ab..d9aa072 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);
--
1.6.2.5
next reply other threads:[~2011-01-03 1:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-03 1:53 Jassi Brar [this message]
2011-01-03 10:55 ` [PATCH] ARM: S3C64xx: Clear DMA_HALT upon start Kukjin Kim
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