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>

1 files changed, 5 insertions, 7 deletions

diff --git a/sound/soc/au1x/dbdma2.c b/sound/soc/au1x/dbdma2.c
index 2929f1c42264..6d9f4c624949 100644
--- a/sound/soc/au1x/dbdma2.c
+++ b/sound/soc/au1x/dbdma2.c
@@ -51,8 +51,8 @@ struct au1xpsc_audio_dmadata {
         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 const struct snd_pcm_hardware au1xpsc_pcm_hardware = {
 
 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_tx(struct au1xpsc_audio_dmadata *cd)
 
 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 @@ static int au1xpsc_pcm_hw_params(struct snd_pcm_substream *substream,
         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;