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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2012-09-21 15:05:48 +0300 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@linux.intel.com> | 2012-09-27 15:35:23 +0530 |
| commit | a09820043c9e11149145a1ec221eed4a7b42dcce (patch) | |
| tree | 0561b70b0803aec4b57e41e90fa0ece433f9d59f /include | |
| parent | 4a63a8b3e8d2e4f56174deb728085010aa3ac2a1 (diff) | |
| download | linux-a09820043c9e11149145a1ec221eed4a7b42dcce.tar.gz linux-a09820043c9e11149145a1ec221eed4a7b42dcce.tar.bz2 linux-a09820043c9e11149145a1ec221eed4a7b42dcce.zip | |
dw_dmac: autoconfigure data_width or get it via platform data
Not all of the controllers support the 64 bit data width. Make it configurable
via platform data. The driver will try to get a value from the component
parameters, otherwise it will use the platform data.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/dw_dmac.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/dw_dmac.h b/include/linux/dw_dmac.h index 3315ef9c785b..e1c8c9e919ac 100644 --- a/include/linux/dw_dmac.h +++ b/include/linux/dw_dmac.h @@ -20,6 +20,9 @@ * @is_private: The device channels should be marked as private and not for * by the general purpose DMA channel allocator. * @block_size: Maximum block size supported by the controller + * @nr_masters: Number of AHB masters supported by the controller + * @data_width: Maximum data width supported by hardware per AHB master + * (0 - 8bits, 1 - 16bits, ..., 5 - 256bits) */ struct dw_dma_platform_data { unsigned int nr_channels; @@ -31,6 +34,8 @@ struct dw_dma_platform_data { #define CHAN_PRIORITY_DESCENDING 1 /* chan7 highest */ unsigned char chan_priority; unsigned short block_size; + unsigned char nr_masters; + unsigned char data_width[4]; }; /* bursts size */ |