[ALSA] emu10k1 - Add PM support
Modules: EMU10K1/EMU10K2 driver
Add PM support to emu10k1 driver.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/emu10k1/p16v.c b/sound/pci/emu10k1/p16v.c
index 90470de..adce6af 100644
--- a/sound/pci/emu10k1/p16v.c
+++ b/sound/pci/emu10k1/p16v.c
@@ -125,6 +125,7 @@
.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 @@
.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 @@
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 @@
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