diff options
| -rw-r--r-- | sound/pci/emu10k1/emupcm.c | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/sound/pci/emu10k1/emupcm.c b/sound/pci/emu10k1/emupcm.c index bbe054be2448..063918397a5f 100644 --- a/sound/pci/emu10k1/emupcm.c +++ b/sound/pci/emu10k1/emupcm.c @@ -511,16 +511,12 @@ static int snd_emu10k1_capture_prepare(struct snd_pcm_substream *substream) return 0; } -static void snd_emu10k1_playback_invalidate_cache(struct snd_emu10k1 *emu, - struct snd_emu10k1_voice *evoice, - bool w_16, bool stereo) +static void snd_emu10k1_playback_fill_cache(struct snd_emu10k1 *emu, + unsigned voice, + u32 sample, bool stereo) { - unsigned voice, sample; u32 ccr; - voice = evoice->number; - sample = w_16 ? 0 : 0x80808080; - // We assume that the cache is resting at this point (i.e., // CCR_CACHEINVALIDSIZE is very small). @@ -539,6 +535,22 @@ static void snd_emu10k1_playback_invalidate_cache(struct snd_emu10k1 *emu, snd_emu10k1_ptr_write(emu, CCR, voice, ccr); } +static void snd_emu10k1_playback_prepare_voices(struct snd_emu10k1 *emu, + struct snd_emu10k1_pcm *epcm, + bool w_16, bool stereo, + int channels) +{ + u32 sample = w_16 ? 0 : 0x80808080; + + for (int i = 0; i < channels; i++) { + unsigned voice = epcm->voices[i]->number; + snd_emu10k1_playback_fill_cache(emu, voice, sample, stereo); + } + + // It takes a moment until the cache fills complete, + // but the unmuting takes long enough for that. +} + static void snd_emu10k1_playback_commit_volume(struct snd_emu10k1 *emu, struct snd_emu10k1_voice *evoice, unsigned int vattn) @@ -632,7 +644,7 @@ static int snd_emu10k1_playback_trigger(struct snd_pcm_substream *substream, spin_lock(&emu->reg_lock); switch (cmd) { case SNDRV_PCM_TRIGGER_START: - snd_emu10k1_playback_invalidate_cache(emu, epcm->voices[0], w_16, stereo); + snd_emu10k1_playback_prepare_voices(emu, epcm, w_16, stereo, 1); fallthrough; case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: case SNDRV_PCM_TRIGGER_RESUME: @@ -774,10 +786,7 @@ static int snd_emu10k1_efx_playback_trigger(struct snd_pcm_substream *substream, spin_lock(&emu->reg_lock); switch (cmd) { case SNDRV_PCM_TRIGGER_START: - /* prepare voices */ - for (i = 0; i < NUM_EFX_PLAYBACK; i++) { - snd_emu10k1_playback_invalidate_cache(emu, epcm->voices[i], true, false); - } + snd_emu10k1_playback_prepare_voices(emu, epcm, true, false, NUM_EFX_PLAYBACK); fallthrough; case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: case SNDRV_PCM_TRIGGER_RESUME: |