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authorClemens Ladisch <clemens@ladisch.de>2011-01-10 18:34:15 +0300
committerTakashi Iwai <tiwai@suse.de>2011-01-10 18:47:17 +0300
commit860cffd57acff68e8bc5465f4dd3b7d338fb8e62 (patch)
tree131003fee909adba5b3c24d08cd8539af1de29cb /sound
parentaf39917d5a59d82f50bf9f5fadaa53944e5abf76 (diff)
downloadlinux-860cffd57acff68e8bc5465f4dd3b7d338fb8e62.tar.xz
ALSA: oxygen: add digital input validity check switch
Add a mixer control to prevent capturing S/PDIF samples that are not marked as valid (non-audio or corrupted samples). Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/oxygen/oxygen_mixer.c30
1 files changed, 20 insertions, 10 deletions
diff --git a/sound/pci/oxygen/oxygen_mixer.c b/sound/pci/oxygen/oxygen_mixer.c
index 821df1c9d1d0..9bff14d5895d 100644
--- a/sound/pci/oxygen/oxygen_mixer.c
+++ b/sound/pci/oxygen/oxygen_mixer.c
@@ -434,30 +434,31 @@ 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)
+static int spdif_bit_switch_get(struct snd_kcontrol *ctl,
+ struct snd_ctl_elem_value *value)
{
struct oxygen *chip = ctl->private_data;
+ u32 bit = ctl->private_value;
value->value.integer.value[0] =
- !!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL)
- & OXYGEN_SPDIF_LOOPBACK);
+ !!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL) & bit);
return 0;
}
-static int spdif_loopback_put(struct snd_kcontrol *ctl,
- struct snd_ctl_elem_value *value)
+static int spdif_bit_switch_put(struct snd_kcontrol *ctl,
+ struct snd_ctl_elem_value *value)
{
struct oxygen *chip = ctl->private_data;
+ u32 bit = ctl->private_value;
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;
+ newreg = oldreg | bit;
else
- newreg = oldreg & ~OXYGEN_SPDIF_LOOPBACK;
+ newreg = oldreg & ~bit;
changed = newreg != oldreg;
if (changed)
oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, newreg);
@@ -835,8 +836,17 @@ static const struct snd_kcontrol_new spdif_input_controls[] = {
.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,
+ .get = spdif_bit_switch_get,
+ .put = spdif_bit_switch_put,
+ .private_value = OXYGEN_SPDIF_LOOPBACK,
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = SNDRV_CTL_NAME_IEC958("Validity Check ",CAPTURE,SWITCH),
+ .info = snd_ctl_boolean_mono_info,
+ .get = spdif_bit_switch_get,
+ .put = spdif_bit_switch_put,
+ .private_value = OXYGEN_SPDIF_SPDVALID,
},
};