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| author |   Takashi Iwai <tiwai@suse.de> | 2005-11-17 16:14:10 +0100 |
|---|---|---|
| committer |   Jaroslav Kysela <perex@suse.cz> | 2006-01-03 12:27:58 +0100 |
| commit | 09668b441dacdf4640509b640ad73e24efd5204f (patch) | |
| tree | 177d0548acbcca4432f82ce6f3aa397cba5ba528 /sound/pci/emu10k1/p16v.c | |
| parent | [ALSA] ens137x - Fix and ADD PM support (diff) | |
| download | wireguard-linux-09668b441dacdf4640509b640ad73e24efd5204f.tar.xz wireguard-linux-09668b441dacdf4640509b640ad73e24efd5204f.zip | |
[ALSA] emu10k1 - Add PM support
Modules: EMU10K1/EMU10K2 driver
Add PM support to emu10k1 driver.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/emu10k1/p16v.c')
| -rw-r--r-- | sound/pci/emu10k1/p16v.c | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/sound/pci/emu10k1/p16v.c b/sound/pci/emu10k1/p16v.c index 90470de8bb8e..adce6af98d01 100644 --- a/sound/pci/emu10k1/p16v.c +++ b/sound/pci/emu10k1/p16v.c @@ -125,6 +125,7 @@ static struct snd_pcm_hardware snd_p16v_playback_hw = { .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_MMAP_VALID), .formats = SNDRV_PCM_FMTBIT_S32_LE, /* Only supports 24-bit samples padded to 32 bits. */ .rates = SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100, @@ -144,6 +145,7 @@ static struct snd_pcm_hardware snd_p16v_capture_hw = { .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_MMAP_VALID), .formats = SNDRV_PCM_FMTBIT_S32_LE, .rates = SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100, @@ -611,7 +613,7 @@ int snd_p16v_pcm(struct snd_emu10k1 *emu, int device, struct snd_pcm **rpcm) pcm->info_flags = 0; pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX; strcpy(pcm->name, "p16v"); - emu->pcm = pcm; + emu->pcm_p16v = pcm; for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; @@ -1030,3 +1032,42 @@ int snd_p16v_mixer(struct snd_emu10k1 *emu) return 0; } +#ifdef CONFIG_PM + +#define NUM_CHS 1 /* up to 4, but only first channel is used */ + +int __devinit snd_p16v_alloc_pm_buffer(struct snd_emu10k1 *emu) +{ + emu->p16v_saved = vmalloc(NUM_CHS * 4 * 0x80); + if (! emu->p16v_saved) + return -ENOMEM; + return 0; +} + +void snd_p16v_free_pm_buffer(struct snd_emu10k1 *emu) +{ + vfree(emu->p16v_saved); +} + +void snd_p16v_suspend(struct snd_emu10k1 *emu) +{ + int i, ch; + unsigned int *val; + + val = emu->p16v_saved; + for (ch = 0; ch < NUM_CHS; ch++) + for (i = 0; i < 0x80; i++, val++) + *val = snd_emu10k1_ptr20_read(emu, i, ch); +} + +void snd_p16v_resume(struct snd_emu10k1 *emu) +{ + int i, ch; + unsigned int *val; + + val = emu->p16v_saved; + for (ch = 0; ch < NUM_CHS; ch++) + for (i = 0; i < 0x80; i++, val++) + snd_emu10k1_ptr20_write(emu, i, ch, *val); +} +#endif |