static int vx_audio_gain_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct vx_core *chip = snd_kcontrol_chip(kcontrol); int audio = kcontrol->private_value & 0xff; int capture = (kcontrol->private_value >> 8) & 1; mutex_lock(&chip->mixer_mutex); if (ucontrol->value.integer.value[0] != chip->audio_gain[capture][audio] || ucontrol->value.integer.value[1] != chip->audio_gain[capture][audio+1]) { vx_set_audio_gain(chip, audio, capture, ucontrol->value.integer.value[0]); vx_set_audio_gain(chip, audio+1, capture, ucontrol->value.integer.value[1]); mutex_unlock(&chip->mixer_mutex); return 1; } mutex_unlock(&chip->mixer_mutex); return 0; }
static int vx_audio_gain_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct vx_core *chip = snd_kcontrol_chip(kcontrol); int audio = kcontrol->private_value & 0xff; int capture = (kcontrol->private_value >> 8) & 1; unsigned int val[2]; val[0] = ucontrol->value.integer.value[0]; val[1] = ucontrol->value.integer.value[1]; if (val[0] > CVAL_MAX || val[1] > CVAL_MAX) return -EINVAL; mutex_lock(&chip->mixer_mutex); if (val[0] != chip->audio_gain[capture][audio] || val[1] != chip->audio_gain[capture][audio+1]) { vx_set_audio_gain(chip, audio, capture, val[0]); vx_set_audio_gain(chip, audio+1, capture, val[1]); mutex_unlock(&chip->mixer_mutex); return 1; } mutex_unlock(&chip->mixer_mutex); return 0; }