/* trigger_capture callback */ static int snd_p16v_pcm_trigger_capture(struct snd_pcm_substream *substream, int cmd) { struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); struct snd_pcm_runtime *runtime = substream->runtime; struct snd_emu10k1_pcm *epcm = runtime->private_data; int channel = 0; int result = 0; u32 inte = INTE2_CAPTURE_CH_0_LOOP | INTE2_CAPTURE_CH_0_HALF_LOOP; switch (cmd) { case SNDRV_PCM_TRIGGER_START: snd_p16v_intr_enable(emu, inte); snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel)); epcm->running = 1; break; case SNDRV_PCM_TRIGGER_STOP: snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel)); snd_p16v_intr_disable(emu, inte); //snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel)); epcm->running = 0; break; default: result = -EINVAL; break; } return result; }
/* trigger_playback callback */ static int snd_p16v_pcm_trigger_playback(struct snd_pcm_substream *substream, int cmd) { struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); struct snd_pcm_runtime *runtime; struct snd_emu10k1_pcm *epcm; int channel; int result = 0; struct snd_pcm_substream *s; u32 basic = 0; u32 inte = 0; int running = 0; switch (cmd) { case SNDRV_PCM_TRIGGER_START: running=1; break; case SNDRV_PCM_TRIGGER_STOP: default: running = 0; break; } snd_pcm_group_for_each_entry(s, substream) { if (snd_pcm_substream_chip(s) != emu || s->stream != SNDRV_PCM_STREAM_PLAYBACK) continue; runtime = s->runtime; epcm = runtime->private_data; channel = substream->pcm->device-emu->p16v_device_offset; /* dev_dbg(emu->card->dev, "p16v channel=%d\n", channel); */ epcm->running = running; basic |= (0x1<<channel); inte |= (INTE2_PLAYBACK_CH_0_LOOP<<channel); snd_pcm_trigger_done(s, substream); } /* dev_dbg(emu->card->dev, "basic=0x%x, inte=0x%x\n", basic, inte); */ switch (cmd) { case SNDRV_PCM_TRIGGER_START: snd_p16v_intr_enable(emu, inte); snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)| (basic)); break; case SNDRV_PCM_TRIGGER_STOP: snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(basic)); snd_p16v_intr_disable(emu, inte); break; default: result = -EINVAL; break; } return result; }