diff options
| author | Wu Fengguang <fengguang.wu@intel.com> | 2009-10-30 11:38:26 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-10-30 11:38:26 +0100 |
| commit | f5d6def5c642587434c42722c57fb65642f61038 (patch) | |
| tree | 628136f71a4d4842605a727b2505d56bc4afc6c6 /sound/pci/hda/hda_codec.c | |
| parent | 739b47f1e5aa3b36eadd7906cc6b41f0175c6ed1 (diff) | |
ALSA: hda - vectorize get_empty_pcm_device()
This unifies the code and data structure,
and makes it easy to add more HDMI devices.
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/hda_codec.c')
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 49 |
1 files changed, 16 insertions, 33 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index af989f660cca..49289cd50697 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -2885,43 +2885,26 @@ static int get_empty_pcm_device(struct hda_bus *bus, int type) static const char *dev_name[HDA_PCM_NTYPES] = { "Audio", "SPDIF", "HDMI", "Modem" }; - /* starting device index for each PCM type */ - static int dev_idx[HDA_PCM_NTYPES] = { - [HDA_PCM_TYPE_AUDIO] = 0, - [HDA_PCM_TYPE_SPDIF] = 1, - [HDA_PCM_TYPE_HDMI] = 3, - [HDA_PCM_TYPE_MODEM] = 6 + /* audio device indices; not linear to keep compatibility */ + static int audio_idx[HDA_PCM_NTYPES][5] = { + [HDA_PCM_TYPE_AUDIO] = { 0, 2, 4, 5, -1 }, + [HDA_PCM_TYPE_SPDIF] = { 1, -1 }, + [HDA_PCM_TYPE_HDMI] = { 3, -1 }, + [HDA_PCM_TYPE_MODEM] = { 6, -1 }, }; - /* normal audio device indices; not linear to keep compatibility */ - static int audio_idx[4] = { 0, 2, 4, 5 }; - int i, dev; - - switch (type) { - case HDA_PCM_TYPE_AUDIO: - for (i = 0; i < ARRAY_SIZE(audio_idx); i++) { - dev = audio_idx[i]; - if (!test_bit(dev, bus->pcm_dev_bits)) - goto ok; - } - snd_printk(KERN_WARNING "Too many audio devices\n"); - return -EAGAIN; - case HDA_PCM_TYPE_SPDIF: - case HDA_PCM_TYPE_HDMI: - case HDA_PCM_TYPE_MODEM: - dev = dev_idx[type]; - if (test_bit(dev, bus->pcm_dev_bits)) { - snd_printk(KERN_WARNING "%s already defined\n", - dev_name[type]); - return -EAGAIN; - } - break; - default: + int i; + + if (type >= HDA_PCM_NTYPES) { snd_printk(KERN_WARNING "Invalid PCM type %d\n", type); return -EINVAL; } - ok: - set_bit(dev, bus->pcm_dev_bits); - return dev; + + for (i = 0; audio_idx[type][i] >= 0 ; i++) + if (!test_and_set_bit(audio_idx[type][i], bus->pcm_dev_bits)) + return audio_idx[type][i]; + + snd_printk(KERN_WARNING "Too many %s devices\n", dev_name[type]); + return -EAGAIN; } /* |