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>

2 files changed, 12 insertions, 12 deletions

diff --git a/sound/oss/au1550_ac97.c b/sound/oss/au1550_ac97.c
index b9ff0b79803..c1070e33b32 100644
--- a/sound/oss/au1550_ac97.c
+++ b/sound/oss/au1550_ac97.c
@@ -614,7 +614,7 @@ start_adc(struct au1550_state *s)
         /* Put two buffers on the ring to get things started.
         */
         for (i=0; i<2; i++) {
-                au1xxx_dbdma_put_dest(db->dmanr, db->nextIn,
+                au1xxx_dbdma_put_dest(db->dmanr, virt_to_phys(db->nextIn),
                                 db->dma_fragsize, DDMA_FLAGS_IE);
 
                 db->nextIn += db->dma_fragsize;
@@ -733,8 +733,9 @@ static void dac_dma_interrupt(int irq, void *dev_id)
         db->dma_qcount--;
 
         if (db->count >= db->fragsize) {
-                if (au1xxx_dbdma_put_source(db->dmanr, db->nextOut,
-                                db->fragsize, DDMA_FLAGS_IE) == 0) {
+                if (au1xxx_dbdma_put_source(db->dmanr,
+                                virt_to_phys(db->nextOut), db->fragsize,
+                                DDMA_FLAGS_IE) == 0) {
                         err("qcount < 2 and no ring room!");
                 }
                 db->nextOut += db->fragsize;
@@ -778,7 +779,7 @@ static void adc_dma_interrupt(int irq, void *dev_id)
 
         /* Put a new empty buffer on the destination DMA.
         */
-        au1xxx_dbdma_put_dest(dp->dmanr, dp->nextIn,
+        au1xxx_dbdma_put_dest(dp->dmanr, virt_to_phys(dp->nextIn),
                               dp->dma_fragsize, DDMA_FLAGS_IE);
 
         dp->nextIn += dp->dma_fragsize;
@@ -1180,7 +1181,8 @@ au1550_write(struct file *file, const char *buffer, size_t count, loff_t * ppos)
                  */
                 while ((db->dma_qcount < 2) && (db->count >= db->fragsize)) {
                         if (au1xxx_dbdma_put_source(db->dmanr,
-                                db->nextOut, db->fragsize, DDMA_FLAGS_IE) == 0) {
+                                virt_to_phys(db->nextOut), db->fragsize,
+                                DDMA_FLAGS_IE) == 0) {
                                 err("qcount < 2 and no ring room!");
                         }
                         db->nextOut += db->fragsize;
diff --git a/sound/soc/au1x/dbdma2.c b/sound/soc/au1x/dbdma2.c
index 2929f1c4226..6d9f4c62494 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;