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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