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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2012-09-21 16:05:48 +0400 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@linux.intel.com> | 2012-09-27 14:05:23 +0400 |
| commit | a09820043c9e11149145a1ec221eed4a7b42dcce (patch) | |
| tree | 0561b70b0803aec4b57e41e90fa0ece433f9d59f /drivers/dma/dw_dmac_regs.h | |
| parent | 4a63a8b3e8d2e4f56174deb728085010aa3ac2a1 (diff) | |
| download | linux-a09820043c9e11149145a1ec221eed4a7b42dcce.tar.xz | |
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 'drivers/dma/dw_dmac_regs.h')
| -rw-r--r-- | drivers/dma/dw_dmac_regs.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/dma/dw_dmac_regs.h b/drivers/dma/dw_dmac_regs.h index 2a1cc533f0c8..06f03914f022 100644 --- a/drivers/dma/dw_dmac_regs.h +++ b/drivers/dma/dw_dmac_regs.h @@ -198,6 +198,9 @@ struct dw_dma_chan { /* configuration passed via DMA_SLAVE_CONFIG */ struct dma_slave_config dma_sconfig; + + /* backlink to dw_dma */ + struct dw_dma *dw; }; static inline struct dw_dma_chan_regs __iomem * @@ -224,6 +227,10 @@ struct dw_dma { u8 all_chan_mask; + /* hardware configuration */ + unsigned char nr_masters; + unsigned char data_width[4]; + struct dw_dma_chan chan[0]; }; |