aboutsummaryrefslogtreecommitdiffstats
path: root/sound/pci/sis7019.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/pci/sis7019.c')
-rw-r--r--sound/pci/sis7019.c16
1 files changed, 9 insertions, 7 deletions
diff --git a/sound/pci/sis7019.c b/sound/pci/sis7019.c
index 9cc1b5a..1b8f674 100644
--- a/sound/pci/sis7019.c
+++ b/sound/pci/sis7019.c
@@ -264,11 +264,13 @@ static void sis_update_voice(struct voice *voice)
* if using small periods.
*
* If we're less than 9 samples behind, we're on target.
+ * Otherwise, shorten the next vperiod by the amount we've
+ * been delayed.
*/
if (sync > -9)
voice->vperiod = voice->sync_period_size + 1;
else
- voice->vperiod = voice->sync_period_size - 4;
+ voice->vperiod = voice->sync_period_size + sync + 10;
if (voice->vperiod < voice->buffer_size) {
sis_update_sso(voice, voice->vperiod);
@@ -736,7 +738,7 @@ static void sis_prepare_timing_voice(struct voice *voice,
period_size = buffer_size;
/* Initially, we want to interrupt just a bit behind the end of
- * the period we're clocking out. 10 samples seems to give a good
+ * the period we're clocking out. 12 samples seems to give a good
* delay.
*
* We want to spread our interrupts throughout the virtual period,
@@ -747,7 +749,7 @@ static void sis_prepare_timing_voice(struct voice *voice,
*
* This is all moot if we don't need to use virtual periods.
*/
- vperiod = runtime->period_size + 10;
+ vperiod = runtime->period_size + 12;
if (vperiod > period_size) {
u16 tail = vperiod % period_size;
u16 quarter_period = period_size / 4;
@@ -776,7 +778,7 @@ static void sis_prepare_timing_voice(struct voice *voice,
*/
timing->flags |= VOICE_SYNC_TIMING;
timing->sync_base = voice->ctrl_base;
- timing->sync_cso = runtime->period_size - 1;
+ timing->sync_cso = runtime->period_size;
timing->sync_period_size = runtime->period_size;
timing->sync_buffer_size = runtime->buffer_size;
timing->period_size = period_size;
@@ -1047,7 +1049,7 @@ static int sis_chip_free(struct sis7019 *sis)
/* Reset the chip, and disable all interrputs.
*/
outl(SIS_GCR_SOFTWARE_RESET, sis->ioport + SIS_GCR);
- udelay(10);
+ udelay(25);
outl(0, sis->ioport + SIS_GCR);
outl(0, sis->ioport + SIS_GIER);
@@ -1083,7 +1085,7 @@ static int sis_chip_init(struct sis7019 *sis)
/* Reset the audio controller
*/
outl(SIS_GCR_SOFTWARE_RESET, io + SIS_GCR);
- udelay(10);
+ udelay(25);
outl(0, io + SIS_GCR);
/* Get the AC-link semaphore, and reset the codecs
@@ -1096,7 +1098,7 @@ static int sis_chip_init(struct sis7019 *sis)
return -EIO;
outl(SIS_AC97_CMD_CODEC_COLD_RESET, io + SIS_AC97_CMD);
- udelay(10);
+ udelay(250);
count = 0xffff;
while ((inw(io + SIS_AC97_STATUS) & SIS_AC97_STATUS_BUSY) && --count)