Browse Source

dmaengine: shdma: Common SH_DMA_SLAVE_NUMBER

Move SHDMA_SLAVE_NUMBER from asm/dmaengine.h to
shdma.h. Set it to 256 to support a wide range
of processors. The amount of memory consumed by
this change is limited to 256 bits.

While at it, rename to SH_DMA_SLAVE_NUMBER to
match with the rest of the file.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Magnus Damm 15 years ago
parent
commit
02ca5083f6
3 changed files with 3 additions and 3 deletions
  1. 0 1
      arch/sh/include/asm/dmaengine.h
  2. 2 2
      drivers/dma/shdma.c
  3. 1 0
      drivers/dma/shdma.h

+ 0 - 1
arch/sh/include/asm/dmaengine.h

@@ -34,7 +34,6 @@ enum {
 	SHDMA_SLAVE_SIUA_RX,
 	SHDMA_SLAVE_SIUB_TX,
 	SHDMA_SLAVE_SIUB_RX,
-	SHDMA_SLAVE_NUMBER,	/* Must stay last */
 };
 
 struct sh_dmae_slave_config {

+ 2 - 2
drivers/dma/shdma.c

@@ -44,7 +44,7 @@ enum sh_dmae_desc_status {
 #define LOG2_DEFAULT_XFER_SIZE	2
 
 /* A bitmask with bits enough for enum sh_dmae_slave_chan_id */
-static unsigned long sh_dmae_slave_used[BITS_TO_LONGS(SHDMA_SLAVE_NUMBER)];
+static unsigned long sh_dmae_slave_used[BITS_TO_LONGS(SH_DMA_SLAVE_NUMBER)];
 
 static void sh_dmae_chan_ld_cleanup(struct sh_dmae_chan *sh_chan, bool all);
 
@@ -274,7 +274,7 @@ static struct sh_dmae_slave_config *sh_dmae_find_slave(
 	struct sh_dmae_pdata *pdata = shdev->pdata;
 	int i;
 
-	if (param->slave_id >= SHDMA_SLAVE_NUMBER)
+	if (param->slave_id >= SH_DMA_SLAVE_NUMBER)
 		return NULL;
 
 	for (i = 0; i < pdata->slave_num; i++)

+ 1 - 0
drivers/dma/shdma.h

@@ -19,6 +19,7 @@
 
 #include <asm/dmaengine.h>
 
+#define SH_DMA_SLAVE_NUMBER 256
 #define SH_DMA_TCR_MAX 0x00FFFFFF	/* 16MB */
 
 struct device;