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| author | Elen Song <elen.song@atmel.com> | 2013-05-10 11:00:50 +0800 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2013-07-05 11:40:30 +0530 |
| commit | d088c33b646e9f3564eea7a057a2cb697c18bcd0 (patch) | |
| tree | 297d676a700dad9089b642d80c5823f0a97cd7c1 /drivers/dma/at_hdmac_regs.h | |
| parent | 6c22770f644bf23aecc11fedd7b305488a861bfc (diff) | |
| download | op-kernel-dev-d088c33b646e9f3564eea7a057a2cb697c18bcd0.zip op-kernel-dev-d088c33b646e9f3564eea7a057a2cb697c18bcd0.tar.gz | |
DMA: AT91: Get transfer width
In one dma transfer, the data transfer width can be configured and it is limited by source or destination peripheral width,
tx_width will save the transfer width, but for memcpy, either source or destination transfer width is taken as tx_width.
Signed-off-by: Elen Song <elen.song@atmel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/at_hdmac_regs.h')
| -rw-r--r-- | drivers/dma/at_hdmac_regs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/dma/at_hdmac_regs.h b/drivers/dma/at_hdmac_regs.h index c604d26..3679933 100644 --- a/drivers/dma/at_hdmac_regs.h +++ b/drivers/dma/at_hdmac_regs.h @@ -182,6 +182,7 @@ struct at_lli { * @txd: support for the async_tx api * @desc_node: node on the channed descriptors list * @len: total transaction bytecount + * @tx_width: transfer width */ struct at_desc { /* FIRST values the hardware uses */ @@ -192,6 +193,7 @@ struct at_desc { struct dma_async_tx_descriptor txd; struct list_head desc_node; size_t len; + u32 tx_width; }; static inline struct at_desc * |
