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authorTakashi Iwai <tiwai@suse.de>2012-08-03 18:03:17 +0200
committerTakashi Iwai <tiwai@suse.de>2012-09-06 18:08:33 +0200
commit8d50cdc1f52843d4fe593c2613528c3f6677949a (patch)
treec450ff29cffdf9c0bf51f47c1b47247d301fff9c /sound/pci/ctxfi
parentf49921b894ec338696e47d985acc09df3cddbfd1 (diff)
downloadlinux-8d50cdc1f52843d4fe593c2613528c3f6677949a.tar.bz2
ALSA: ctxfi: Implement channel maps
Assign the multi-channel map to front PCM, and other channel map to each other channel PCM. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/ctxfi')
-rw-r--r--sound/pci/ctxfi/ctpcm.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/sound/pci/ctxfi/ctpcm.c b/sound/pci/ctxfi/ctpcm.c
index d021876901bb..6c191429b126 100644
--- a/sound/pci/ctxfi/ctpcm.c
+++ b/sound/pci/ctxfi/ctpcm.c
@@ -395,12 +395,38 @@ static struct snd_pcm_ops ct_pcm_capture_ops = {
.page = snd_pcm_sgbuf_ops_page,
};
+static const struct snd_pcm_chmap_elem surround_map[] = {
+ { .channels = 1,
+ .map = { SNDRV_CHMAP_RC } },
+ { .channels = 2,
+ .map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
+ { }
+};
+
+static const struct snd_pcm_chmap_elem clfe_map[] = {
+ { .channels = 1,
+ .map = { SNDRV_CHMAP_FC } },
+ { .channels = 2,
+ .map = { SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE } },
+ { }
+};
+
+static const struct snd_pcm_chmap_elem side_map[] = {
+ { .channels = 1,
+ .map = { SNDRV_CHMAP_RC } },
+ { .channels = 2,
+ .map = { SNDRV_CHMAP_SL, SNDRV_CHMAP_SR } },
+ { }
+};
+
/* Create ALSA pcm device */
int ct_alsa_pcm_create(struct ct_atc *atc,
enum CTALSADEVS device,
const char *device_name)
{
struct snd_pcm *pcm;
+ const struct snd_pcm_chmap_elem *map;
+ int chs;
int err;
int playback_count, capture_count;
@@ -427,6 +453,30 @@ int ct_alsa_pcm_create(struct ct_atc *atc,
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
snd_dma_pci_data(atc->pci), 128*1024, 128*1024);
+ chs = 2;
+ switch (device) {
+ case FRONT:
+ chs = 8;
+ map = snd_pcm_std_chmaps;
+ break;
+ case SURROUND:
+ map = surround_map;
+ break;
+ case CLFE:
+ map = clfe_map;
+ break;
+ case SIDE:
+ map = side_map;
+ break;
+ default:
+ map = snd_pcm_std_chmaps;
+ break;
+ }
+ err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, map, chs,
+ 0, NULL);
+ if (err < 0)
+ return err;
+
#ifdef CONFIG_PM_SLEEP
atc->pcms[device] = pcm;
#endif