diff options
| author | Clemens Ladisch <clemens@ladisch.de> | 2008-01-22 08:36:03 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2008-01-31 17:30:09 +0100 |
| commit | 02f21c9d6ba863aa86c33e1335cb1307322f7fb8 (patch) | |
| tree | 68095c6cde29818f01bd24cd51f973d9970f92bd /sound/pci/oxygen/oxygen_mixer.c | |
| parent | [ALSA] Fix lockdep warning in ASoC machine probe (diff) | |
| download | linux-02f21c9d6ba863aa86c33e1335cb1307322f7fb8.tar.xz linux-02f21c9d6ba863aa86c33e1335cb1307322f7fb8.zip | |
[ALSA] oxygen: add SPDIF loopback control
Add a mixer control for the SPDIF loopback function.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound/pci/oxygen/oxygen_mixer.c')
| -rw-r--r-- | sound/pci/oxygen/oxygen_mixer.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/sound/pci/oxygen/oxygen_mixer.c b/sound/pci/oxygen/oxygen_mixer.c index 0993c29e62f1..6b7420fdd026 100644 --- a/sound/pci/oxygen/oxygen_mixer.c +++ b/sound/pci/oxygen/oxygen_mixer.c @@ -408,6 +408,37 @@ static int spdif_input_default_get(struct snd_kcontrol *ctl, return 0; } +static int spdif_loopback_get(struct snd_kcontrol *ctl, + struct snd_ctl_elem_value *value) +{ + struct oxygen *chip = ctl->private_data; + + value->value.integer.value[0] = + !!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL) + & OXYGEN_SPDIF_LOOPBACK); + return 0; +} + +static int spdif_loopback_put(struct snd_kcontrol *ctl, + struct snd_ctl_elem_value *value) +{ + struct oxygen *chip = ctl->private_data; + u32 oldreg, newreg; + int changed; + + spin_lock_irq(&chip->reg_lock); + oldreg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL); + if (value->value.integer.value[0]) + newreg = oldreg | OXYGEN_SPDIF_LOOPBACK; + else + newreg = oldreg & ~OXYGEN_SPDIF_LOOPBACK; + changed = newreg != oldreg; + if (changed) + oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, newreg); + spin_unlock_irq(&chip->reg_lock); + return changed; +} + static int ac97_switch_get(struct snd_kcontrol *ctl, struct snd_ctl_elem_value *value) { @@ -620,6 +651,13 @@ static const struct snd_kcontrol_new controls[] = { .info = spdif_info, .get = spdif_input_default_get, }, + { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = SNDRV_CTL_NAME_IEC958("Loopback ", NONE, SWITCH), + .info = snd_ctl_boolean_mono_info, + .get = spdif_loopback_get, + .put = spdif_loopback_put, + }, }; static const struct snd_kcontrol_new ac97_controls[] = { |