dmaengine: dw: pass platform data via struct dw_dma_chip

We pass struct dw_dma_chip to dw_dma_probe() anyway, thus we may use it to
pass a platform data as well.

While here, constify the source of the platform data.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/include/linux/dma/dw.h b/include/linux/dma/dw.h
index 71456442ebe3..f2e538aaddad 100644
--- a/include/linux/dma/dw.h
+++ b/include/linux/dma/dw.h
@@ -27,6 +27,7 @@ struct dw_dma;
  * @regs:               memory mapped I/O space
  * @clk:                hclk clock
  * @dw:                 struct dw_dma that is filed by dw_dma_probe()
+ * @pdata:              pointer to platform data
  */
 struct dw_dma_chip {
         struct device   *dev;
@@ -34,10 +35,12 @@ struct dw_dma_chip {
         void __iomem    *regs;
         struct clk      *clk;
         struct dw_dma   *dw;
+
+        const struct dw_dma_platform_data       *pdata;
 };
 
 /* Export to the platform drivers */
-int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata);
+int dw_dma_probe(struct dw_dma_chip *chip);
 int dw_dma_remove(struct dw_dma_chip *chip);
 
 /* DMA API extensions */