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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2016-04-27 14:15:38 +0300
committerVinod Koul <vinod.koul@intel.com>2016-05-02 15:30:47 +0530
commit2e65060e803e046fc9b5ed0107494a452424845e (patch)
tree2e5adfe7ea7400586fff0623636912d2f1ded14a /include/linux/platform_data/dma-dw.h
parent969f750fc63d3fd2f26eceedcdeca5878b785b2e (diff)
downloadblackbird-op-linux-2e65060e803e046fc9b5ed0107494a452424845e.tar.gz
blackbird-op-linux-2e65060e803e046fc9b5ed0107494a452424845e.zip
dmaengine: dw: revisit data_width property
There several changes are done here: - Convert the property to be in bytes Besides that this is a common practice for such property, the use of a value in bytes much more convenient than handling the encoded one. - Rename data_width to data-width in the device tree bindings The change leaves the support for the old format as well just in case someone will use a newer kernel with an old device tree blob. - While here, replace dwc_fast_ffs() by __ffs() 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@intel.com>
Diffstat (limited to 'include/linux/platform_data/dma-dw.h')
-rw-r--r--include/linux/platform_data/dma-dw.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/platform_data/dma-dw.h b/include/linux/platform_data/dma-dw.h
index b881b978e486..ad768111c350 100644
--- a/include/linux/platform_data/dma-dw.h
+++ b/include/linux/platform_data/dma-dw.h
@@ -43,7 +43,7 @@ struct dw_dma_slave {
* @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)
+ * (in bytes, power of 2)
*/
struct dw_dma_platform_data {
unsigned int nr_channels;
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