diff options
Diffstat (limited to 'sound/pci/hda/hda_codec.c')
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 23201f3eeb1..78ff4575699 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -29,6 +29,7 @@ #include <sound/core.h> #include "hda_codec.h" #include <sound/asoundef.h> +#include <sound/tlv.h> #include <sound/initval.h> #include "hda_local.h" @@ -841,6 +842,38 @@ int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_e return change; } +int snd_hda_mixer_amp_tlv(struct snd_kcontrol *kcontrol, int op_flag, + unsigned int size, unsigned int __user *_tlv) +{ + struct hda_codec *codec = snd_kcontrol_chip(kcontrol); + hda_nid_t nid = get_amp_nid(kcontrol); + int dir = get_amp_direction(kcontrol); + u32 caps, val1, val2; + + if (size < 4 * sizeof(unsigned int)) + return -ENOMEM; + caps = query_amp_caps(codec, nid, dir); + val2 = (((caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT) + 1) * 25; + val1 = -((caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT); + val1 = ((int)val1) * ((int)val2); + if (caps & AC_AMPCAP_MUTE) + val2 |= 0x10000; + if ((val2 & 0x10000) == 0 && dir == HDA_OUTPUT) { + caps = query_amp_caps(codec, nid, HDA_INPUT); + if (caps & AC_AMPCAP_MUTE) + val2 |= 0x10000; + } + if (put_user(SNDRV_CTL_TLVT_DB_SCALE, _tlv)) + return -EFAULT; + if (put_user(2 * sizeof(unsigned int), _tlv + 1)) + return -EFAULT; + if (put_user(val1, _tlv + 2)) + return -EFAULT; + if (put_user(val2, _tlv + 3)) + return -EFAULT; + return 0; +} + /* switch */ int snd_hda_mixer_amp_switch_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { |