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>
diff --git a/arch/sh/include/asm/dmaengine.h b/arch/sh/include/asm/dmaengine.h
index 568e991..abb8d66 100644
--- a/arch/sh/include/asm/dmaengine.h
+++ b/arch/sh/include/asm/dmaengine.h
@@ -34,7 +34,6 @@
SHDMA_SLAVE_SIUA_RX,
SHDMA_SLAVE_SIUB_TX,
SHDMA_SLAVE_SIUB_RX,
- SHDMA_SLAVE_NUMBER, /* Must stay last */
};
struct sh_dmae_slave_config {
diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c
index e5588f4..8360538 100644
--- a/drivers/dma/shdma.c
+++ b/drivers/dma/shdma.c
@@ -44,7 +44,7 @@
#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 @@
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++)
diff --git a/drivers/dma/shdma.h b/drivers/dma/shdma.h
index 153609a..d7ddf6f 100644
--- a/drivers/dma/shdma.h
+++ b/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;