From: kgene.kim@samsung.com (Kukjin Kim)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: S3C64xx: Clear DMA_HALT upon start
Date: Mon, 03 Jan 2011 19:55:19 +0900 [thread overview]
Message-ID: <01b501cbab34$b9b977e0$2d2c67a0$%kim@samsung.com> (raw)
In-Reply-To: <1294019615-18532-1-git-send-email-jassisinghbrar@gmail.com>
Jassi Brar wrote:
>
> 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);
> --
Ok...will apply.
Thanks.
Best regards,
Kgene.
--
Kukjin Kim <kgene.kim@samsung.com>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.
prev parent reply other threads:[~2011-01-03 10:55 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-03 1:53 [PATCH] ARM: S3C64xx: Clear DMA_HALT upon start Jassi Brar
2011-01-03 10:55 ` Kukjin Kim [this message]
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