dmaengine: at_hdmac: platform data move to use .id_table

We remove the use of platform data from DMA controller driver.
We now use of .id_table to distinguish between compatible
types. The two implementations allow to determine the
number of channels and the capabilities of the controller.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/dma/at_hdmac_regs.h b/drivers/dma/at_hdmac_regs.h
index aa4c9aebab7c..d7d67372e4ff 100644
--- a/drivers/dma/at_hdmac_regs.h
+++ b/drivers/dma/at_hdmac_regs.h
@@ -248,9 +248,16 @@ static inline struct at_dma_chan *to_at_dma_chan(struct dma_chan *dchan)
 
 /*--  Controller  ------------------------------------------------------*/
 
+enum atdma_devtype {
+        ATDMA_DEVTYPE_UNDEFINED = 0,
+        ATDMA_DEVTYPE_SAM9RL,   /* compatible with SAM9RL DMA controller */
+        ATDMA_DEVTYPE_SAM9G45,  /* compatible with SAM9G45 DMA controller */
+};
+
 /**
  * struct at_dma - internal representation of an Atmel HDMA Controller
  * @chan_common: common dmaengine dma_device object members
+ * @atdma_devtype: identifier of DMA controller compatibility
  * @ch_regs: memory mapped register base
  * @clk: dma controller clock
  * @save_imr: interrupt mask register that is saved on suspend/resume cycle
@@ -260,6 +267,7 @@ static inline struct at_dma_chan *to_at_dma_chan(struct dma_chan *dchan)
  */
 struct at_dma {
         struct dma_device       dma_common;
+        enum atdma_devtype      devtype;
         void __iomem            *regs;
         struct clk              *clk;
         u32                     save_imr;