spi: mxs-spi: move to use generic DMA helper
With the generic DMA device tree helper supported by mxs-dma driver,
client devices only need to call dma_request_slave_channel() for
requesting a DMA channel from dmaengine.
Since mxs is a DT only platform now, along with the changes, the non-DT
case handling in probe function also gets removed.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/include/linux/spi/mxs-spi.h b/include/linux/spi/mxs-spi.h
index 61ae130..4835486 100644
--- a/include/linux/spi/mxs-spi.h
+++ b/include/linux/spi/mxs-spi.h
@@ -24,7 +24,7 @@
#ifndef __LINUX_SPI_MXS_SPI_H__
#define __LINUX_SPI_MXS_SPI_H__
-#include <linux/fsl/mxs-dma.h>
+#include <linux/dmaengine.h>
#define ssp_is_old(host) ((host)->devid == IMX23_SSP)
@@ -137,9 +137,7 @@
unsigned int clk_rate;
enum mxs_ssp_id devid;
- int dma_channel;
struct dma_chan *dmach;
- struct mxs_dma_data dma_data;
unsigned int dma_dir;
enum dma_transfer_direction slave_dirn;
u32 ssp_pio_words[SSP_PIO_NUM];