linux-kernel - [PATCH V2 0/1] dmaengine/amba-pl08x: Add support for s3c64xx DMAC

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Message-id: <1317189007-23033-1-git-send-email-alim.akhtar@samsung.com>
Date:	Wed, 28 Sep 2011 11:20:06 +0530
From:	Alim Akhtar <alim.akhtar@...sung.com>
To:	linus.walleij@...aro.org, vinod.koul@...el.com,
	dan.j.williams@...el.com, viresh.kumar@...com
Cc:	kgene.kim@...sung.com, linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux@....linux.org.uk,
	linux-kernel@...r.kernel.org
Subject: [PATCH V2 0/1] dmaengine/amba-pl08x: Add support for s3c64xx DMAC

This patch modifies the amba-pl08x driver for s3c64xx.
The DMA controller of S3C64XX is a variant of PrimeCell pl080 DMAC.
S3C64xx contents extra register to hold the TransferSize.

Below diagram explains the s3c64xx LLI structure and offsets.
	-----------------------------------------------------------------
	|       Offset          |       Contents                        |
	-----------------------------------------------------------------
	| Next LLI Address      | Source Address for Next xfer          |
	----------------------------------------------------------------- 
	| Next LLI Address+0x04 | Destination Address for Next xfer     |
	-----------------------------------------------------------------
	| Next LLI Address+0x08 | Next LLI address for Next xfer        |
	-----------------------------------------------------------------
	| Next LLI Address+0x0c | DMACCxControl0 data for Next xfer     |
	-----------------------------------------------------------------
	| Next LLI Address+0x10 | DMACCxControl1 xfer size for Next xfer|
	----------------------------------------------------------------- 

Changes since v1:
	- Rebased with "samsung_dma" branch of 
	http://git.infradead.org/users/vkoul/slave-dma.git

	- Addressed review comments from linus.walleij 
	http://www.spinics.net/lists/arm-kernel/msg135411.html

Alim Akhtar (1):
  dmaengine/amba-pl08x: Add support for s3c64xx DMAC

 drivers/dma/amba-pl08x.c |  135 ++++++++++++++++++++++++++++++++++++++--------
 1 files changed, 112 insertions(+), 23 deletions(-)

-- 
1.7.2.3

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