MIPS: Alchemy: change dbdma to accept physical memory addresses
DMA can only be done from physical addresses; move the "virt_to_phys"
source/destination buffer address translation from the dbdma queueing
functions (since the hardware can only DMA to/from physical addresses)
to their respective users.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/sound/soc/au1x/dbdma2.c b/sound/soc/au1x/dbdma2.c
index 2929f1c..6d9f4c6 100644
--- a/sound/soc/au1x/dbdma2.c
+++ b/sound/soc/au1x/dbdma2.c
@@ -51,8 +51,8 @@
struct snd_pcm_substream *substream;
unsigned long curr_period; /* current segment DDMA is working on */
unsigned long q_period; /* queue period(s) */
- unsigned long dma_area; /* address of queued DMA area */
- unsigned long dma_area_s; /* start address of DMA area */
+ dma_addr_t dma_area; /* address of queued DMA area */
+ dma_addr_t dma_area_s; /* start address of DMA area */
unsigned long pos; /* current byte position being played */
unsigned long periods; /* number of SG segments in total */
unsigned long period_bytes; /* size in bytes of one SG segment */
@@ -94,8 +94,7 @@
static void au1x_pcm_queue_tx(struct au1xpsc_audio_dmadata *cd)
{
- au1xxx_dbdma_put_source(cd->ddma_chan,
- (void *)phys_to_virt(cd->dma_area),
+ au1xxx_dbdma_put_source(cd->ddma_chan, cd->dma_area,
cd->period_bytes, DDMA_FLAGS_IE);
/* update next-to-queue period */
@@ -109,8 +108,7 @@
static void au1x_pcm_queue_rx(struct au1xpsc_audio_dmadata *cd)
{
- au1xxx_dbdma_put_dest(cd->ddma_chan,
- (void *)phys_to_virt(cd->dma_area),
+ au1xxx_dbdma_put_dest(cd->ddma_chan, cd->dma_area,
cd->period_bytes, DDMA_FLAGS_IE);
/* update next-to-queue period */
@@ -233,7 +231,7 @@
pcd->substream = substream;
pcd->period_bytes = params_period_bytes(params);
pcd->periods = params_periods(params);
- pcd->dma_area_s = pcd->dma_area = (unsigned long)runtime->dma_addr;
+ pcd->dma_area_s = pcd->dma_area = runtime->dma_addr;
pcd->q_period = 0;
pcd->curr_period = 0;
pcd->pos = 0;
