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| author | Viresh Kumar | 2011-03-03 11:17:21 +0100 |
|---|---|---|
| committer | Vinod Koul | 2011-03-06 20:42:28 +0100 |
| commit | b0c3130d69bda5cd91aa3b3f08e7878df49fde69 (patch) | |
| tree | a75091d3489cc2db2a806cd30d0ef6f80419e86d /include | |
| parent | dw_dmac: Mark all tx_descriptors with DMA_CRTL_ACK after xfer finish (diff) | |
| download | kernel-qcow2-linux-b0c3130d69bda5cd91aa3b3f08e7878df49fde69.tar.gz kernel-qcow2-linux-b0c3130d69bda5cd91aa3b3f08e7878df49fde69.tar.xz kernel-qcow2-linux-b0c3130d69bda5cd91aa3b3f08e7878df49fde69.zip | |
dw_dmac: Pass Channel Allocation Order from platform_data
In SPEAr Platform channels 4-7 have more Fifo depth. So we must get better
channel first. This patch introduces concept of channel allocation order in
dw_dmac. If user doesn't pass anything or 0, than normal (ascending) channel
allocation will follow, else channels will be allocated in descending order.
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/dw_dmac.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/dw_dmac.h b/include/linux/dw_dmac.h index deec66b37180..a18c498984d9 100644 --- a/include/linux/dw_dmac.h +++ b/include/linux/dw_dmac.h @@ -22,6 +22,9 @@ struct dw_dma_platform_data { unsigned int nr_channels; bool is_private; +#define CHAN_ALLOCATION_ASCENDING 0 /* zero to seven */ +#define CHAN_ALLOCATION_DESCENDING 1 /* seven to zero */ + unsigned char chan_allocation_order; }; /** |