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authorManuel Lauss <manuel.lauss@googlemail.com>2009-10-13 20:22:35 +0200
committerRalf Baechle <ralf@linux-mips.org>2010-02-27 12:52:55 +0100
commit963accbc82a0912b39de39d59e2fd6741db3aa4b (patch)
tree4ea340b0261ab19f3f0776f47e4fab8708934b5b /sound
parentea071cc705e8bfba0c8bf84be8d4f9f4e9da6962 (diff)
downloadop-kernel-dev-963accbc82a0912b39de39d59e2fd6741db3aa4b.zip
op-kernel-dev-963accbc82a0912b39de39d59e2fd6741db3aa4b.tar.gz
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>
Diffstat (limited to 'sound')
-rw-r--r--sound/oss/au1550_ac97.c12
-rw-r--r--sound/soc/au1x/dbdma2.c12
2 files changed, 12 insertions, 12 deletions
diff --git a/sound/oss/au1550_ac97.c b/sound/oss/au1550_ac97.c
index b9ff0b7..c1070e3 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 2929f1c..6d9f4c6 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;
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