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Get playback on channel 1 closer to working. 8 bit samples work.

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16 bit samples have some sort of choppiness, the nature of which
is not completely clear, but it clearly has something to do with
dma buffer synchronization. But at least channel 1 makes noise now.
This commit is contained in:
Nick Sayer 2000-08-02 08:01:00 +00:00
parent 6bc4ee4976
commit 19a0702e86
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=64122
1 changed files with 16 additions and 11 deletions
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27
sys/dev/sound/pci/solo.c
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@ -419,7 +419,7 @@ ess_setupch(struct ess_info *sc, int ch, int dir, int spd, u_int32_t fmt, int le
/* transfer length high */
ess_write(sc, 0xa5, (len & 0xff00) >> 8);
/* autoinit, dma dir */
ess_write(sc, 0xb8, 0x04 | (play? 0x00 : 0x0a));
ess_write(sc, 0xb8, 0x04 | (play? 0x00 : 0x08));
/* mono/stereo */
ess_write(sc, 0xa8, (ess_read(sc, 0xa8) & ~0x03) | (stereo? 0x01 : 0x02));
/* demand mode, 4 bytes/xfer */
@ -438,7 +438,7 @@ ess_setupch(struct ess_info *sc, int ch, int dir, int spd, u_int32_t fmt, int le
ess_write(sc, 0xb7, 0x51 | (unsign? 0x00 : 0x20));
*/
/* setup fifo */
ess_write(sc, 0xb7, 0x91 | (unsign? 0x00 : 0x20) |
ess_write(sc, 0xb7, 0x90 | (unsign? 0x00 : 0x20) |
(b16? 0x04 : 0x00) |
(stereo? 0x08 : 0x40));
/* irq control */
@ -475,9 +475,13 @@ ess_start(struct ess_chinfo *ch)
ess_setupch(sc, ch->hwch, ch->dir, ch->spd, ch->fmt, ch->buffer->dl);
ch->stopping = 0;
if (ch->hwch == 1)
if (ch->hwch == 1) {
ess_write(sc, 0xb8, ess_read(sc, 0xb8) | 0x01);
else
if (ch->dir == PCMDIR_PLAY) {
DELAY(100000); /* 100 ms */
ess_cmd(sc, 0xd1);
}
} else
ess_setmixer(sc, 0x78, ess_getmixer(sc, 0x78) | 0x03);
return 0;
}
@ -490,6 +494,12 @@ ess_stop(struct ess_chinfo *ch)
ch->stopping = 1;
if (ch->hwch == 1)
ess_write(sc, 0xb8, ess_read(sc, 0xb8) & ~0x04);
#if 0
if (ch->dir == PCMDIR_PLAY) {
DELAY(25000); /* 25 ms */
ess_cmd(sc, 0xd3);
}
#endif
else
ess_setmixer(sc, 0x78, ess_getmixer(sc, 0x78) & ~0x10);
return 0;
@ -709,18 +719,13 @@ essmix_setrecsrc(snd_mixer *m, u_int32_t src)
static int
ess_dmasetup(struct ess_info *sc, int ch, u_int32_t base, u_int16_t cnt, int dir)
{
/*
* XXX -- the constants written to register 8 and b in the playback case
* are certainly not 0x00. But I don't know what they really are
*/
KASSERT(ch == 1 || ch == 2, ("bad ch"));
sc->dmasz[ch - 1] = cnt;
if (ch == 1) {
port_wr(sc->vc, 0x8, dir == PCMDIR_PLAY? 0x00 : 0xc4, 1); /* command */
port_wr(sc->vc, 0x8, 0xc4, 1); /* command */
port_wr(sc->vc, 0xd, 0xff, 1); /* reset */
port_wr(sc->vc, 0xf, 0x01, 1); /* mask */
port_wr(sc->vc, 0xb, dir == PCMDIR_PLAY? 0x00 : 0x54, 1); /* mode */
port_wr(sc->vc, 0xb, dir == PCMDIR_PLAY? 0x58 : 0x54, 1); /* mode */
port_wr(sc->vc, 0x0, base, 4);
port_wr(sc->vc, 0x4, cnt, 2);