sh: implement DMA_SLAVE capability in SH dmaengine driver

Tested to work with a SIU ASoC driver on sh7722 (migor).

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 2 insertions, 5 deletions

diff --git a/drivers/dma/shdma.h b/drivers/dma/shdma.h
index 108f1cffb6f5..7e227f3c87c4 100644
--- a/drivers/dma/shdma.h
+++ b/drivers/dma/shdma.h
@@ -29,6 +29,7 @@ struct sh_desc {
         struct sh_dmae_regs hw;
         struct list_head node;
         struct dma_async_tx_descriptor async_tx;
+        enum dma_data_direction direction;
         dma_cookie_t cookie;
         int chunks;
         int mark;
@@ -45,13 +46,9 @@ struct sh_dmae_chan {
         struct device *dev;             /* Channel device */
         struct tasklet_struct tasklet;  /* Tasklet */
         int descs_allocated;            /* desc count */
+        int xmit_shift;                 /* log_2(bytes_per_xfer) */
         int id;                         /* Raw id of this channel */
         char dev_id[16];                /* unique name per DMAC of channel */
-
-        /* Set chcr */
-        int (*set_chcr)(struct sh_dmae_chan *sh_chan, u32 regs);
-        /* Set DMA resource */
-        int (*set_dmars)(struct sh_dmae_chan *sh_chan, u16 res);
 };
 
 struct sh_dmae_device {