text: /*
   * Driver for Digigram VX soundcards
   *
   * Common mixer part
   *
   * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
   *
   *   This program is free software; you can redistribute it and/or modify
   *   it under the terms of the GNU General Public License as published by
   *   the Free Software Foundation; either version 2 of the License, or
   *   (at your option) any later version.
   *
   *   This program is distributed in the hope that it will be useful,
   *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *   GNU General Public License for more details.
   *
   *   You should have received a copy of the GNU General Public License
   *   along with this program; if not, write to the Free Software
   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
   */
  
  #include <sound/core.h>
  #include <sound/control.h>
  #include <sound/tlv.h>
  #include <sound/vx_core.h>
  #include "vx_cmd.h"
  
  
  /*
   * write a codec data (24bit)
   */
  static void vx_write_codec_reg(struct vx_core *chip, int codec, unsigned int data)
  {
  	if (snd_BUG_ON(!chip->ops->write_codec))
  		return;
  
  	if (chip->chip_status & VX_STAT_IS_STALE)
  		return;
  
  	mutex_lock(&chip->lock);
  	chip->ops->write_codec(chip, codec, data);
  	mutex_unlock(&chip->lock);
  }
  
  /*
   * Data type used to access the Codec
   */
  union vx_codec_data {
  	u32 l;
  #ifdef SNDRV_BIG_ENDIAN
  	struct w {
  		u16 h;
  		u16 l;
  	} w;
  	struct b {
  		u8 hh;
  		u8 mh;
  		u8 ml;
  		u8 ll;
  	} b;
  #else /* LITTLE_ENDIAN */
  	struct w {
  		u16 l;
  		u16 h;
  	} w;
  	struct b {
  		u8 ll;
  		u8 ml;
  		u8 mh;
  		u8 hh;
  	} b;
  #endif
  };
  
  #define SET_CDC_DATA_SEL(di,s)          ((di).b.mh = (u8) (s))
  #define SET_CDC_DATA_REG(di,r)          ((di).b.ml = (u8) (r))
  #define SET_CDC_DATA_VAL(di,d)          ((di).b.ll = (u8) (d))
  #define SET_CDC_DATA_INIT(di)           ((di).l = 0L, SET_CDC_DATA_SEL(di,XX_CODEC_SELECTOR))
  
  /*
   * set up codec register and write the value
   * @codec: the codec id, 0 or 1
   * @reg: register index
   * @val: data value
   */
  static void vx_set_codec_reg(struct vx_core *chip, int codec, int reg, int val)
  {
  	union vx_codec_data data;
  	/* DAC control register */
  	SET_CDC_DATA_INIT(data);
  	SET_CDC_DATA_REG(data, reg);
  	SET_CDC_DATA_VAL(data, val);
  	vx_write_codec_reg(chip, codec, data.l);
  }
  
  
  /*
   * vx_set_analog_output_level - set the output attenuation level
   * @codec: the output codec, 0 or 1.  (1 for VXP440 only)
   * @left: left output level, 0 = mute
   * @right: right output level
   */
  static void vx_set_analog_output_level(struct vx_core *chip, int codec, int left, int right)
  {
  	left  = chip->hw->output_level_max - left;
  	right = chip->hw->output_level_max - right;
  
  	if (chip->ops->akm_write) {
  		chip->ops->akm_write(chip, XX_CODEC_LEVEL_LEFT_REGISTER, left);
  		chip->ops->akm_write(chip, XX_CODEC_LEVEL_RIGHT_REGISTER, right);
  	} else {
  		/* convert to attenuation level: 0 = 0dB (max), 0xe3 = -113.5 dB (min) */
  		vx_set_codec_reg(chip, codec, XX_CODEC_LEVEL_LEFT_REGISTER, left);
  		vx_set_codec_reg(chip, codec, XX_CODEC_LEVEL_RIGHT_REGISTER, right);
  	}
  }
  
  
  /*
   * vx_toggle_dac_mute -  mute/unmute DAC
   * @mute: 0 = unmute, 1 = mute
   */
  
  #define DAC_ATTEN_MIN	0x08
  #define DAC_ATTEN_MAX	0x38
  
  void vx_toggle_dac_mute(struct vx_core *chip, int mute)
  {
  	unsigned int i;
  	for (i = 0; i < chip->hw->num_codecs; i++) {
  		if (chip->ops->akm_write)
  			chip->ops->akm_write(chip, XX_CODEC_DAC_CONTROL_REGISTER, mute); /* XXX */
  		else
  			vx_set_codec_reg(chip, i, XX_CODEC_DAC_CONTROL_REGISTER,
  					 mute ? DAC_ATTEN_MAX : DAC_ATTEN_MIN);
  	}
  }
  
  /*
   * vx_reset_codec - reset and initialize the codecs
   */
  void vx_reset_codec(struct vx_core *chip, int cold_reset)
  {
  	unsigned int i;
  	int port = chip->type >= VX_TYPE_VXPOCKET ? 0x75 : 0x65;
  
  	chip->ops->reset_codec(chip);
  
  	/* AKM codecs should be initialized in reset_codec callback */
  	if (! chip->ops->akm_write) {
  		/* initialize old codecs */
  		for (i = 0; i < chip->hw->num_codecs; i++) {
  			/* DAC control register (change level when zero crossing + mute) */
  			vx_set_codec_reg(chip, i, XX_CODEC_DAC_CONTROL_REGISTER, DAC_ATTEN_MAX);
  			/* ADC control register */
  			vx_set_codec_reg(chip, i, XX_CODEC_ADC_CONTROL_REGISTER, 0x00);
  			/* Port mode register */
  			vx_set_codec_reg(chip, i, XX_CODEC_PORT_MODE_REGISTER, port);
  			/* Clock control register */
  			vx_set_codec_reg(chip, i, XX_CODEC_CLOCK_CONTROL_REGISTER, 0x00);
  		}
  	}
  
  	/* mute analog output */
  	for (i = 0; i < chip->hw->num_codecs; i++) {
  		chip->output_level[i][0] = 0;
  		chip->output_level[i][1] = 0;
  		vx_set_analog_output_level(chip, i, 0, 0);
  	}
  }
  
  /*
   * change the audio input source
   * @src: the target source (VX_AUDIO_SRC_XXX)
   */
  static void vx_change_audio_source(struct vx_core *chip, int src)
  {
  	if (chip->chip_status & VX_STAT_IS_STALE)
  		return;
  
  	mutex_lock(&chip->lock);
  	chip->ops->change_audio_source(chip, src);
  	mutex_unlock(&chip->lock);
  }
  
  
  /*
   * change the audio source if necessary and possible
   * returns 1 if the source is actually changed.
   */
  int vx_sync_audio_source(struct vx_core *chip)
  {
  	if (chip->audio_source_target == chip->audio_source ||
  	    chip->pcm_running)
  		return 0;
  	vx_change_audio_source(chip, chip->audio_source_target);
  	chip->audio_source = chip->audio_source_target;
  	return 1;
  }
  
  
  /*
   * audio level, mute, monitoring
   */
  struct vx_audio_level {
  	unsigned int has_level: 1;
  	unsigned int has_monitor_level: 1;
  	unsigned int has_mute: 1;
  	unsigned int has_monitor_mute: 1;
  	unsigned int mute;
  	unsigned int monitor_mute;
  	short level;
  	short monitor_level;
  };
  
  static int vx_adjust_audio_level(struct vx_core *chip, int audio, int capture,
  				 struct vx_audio_level *info)
  {
  	struct vx_rmh rmh;
  
  	if (chip->chip_status & VX_STAT_IS_STALE)
  		return -EBUSY;
  
          vx_init_rmh(&rmh, CMD_AUDIO_LEVEL_ADJUST);
  	if (capture)
  		rmh.Cmd[0] |= COMMAND_RECORD_MASK;
  	/* Add Audio IO mask */
  	rmh.Cmd[1] = 1 << audio;
  	rmh.Cmd[2] = 0;
  	if (info->has_level) {
  		rmh.Cmd[0] |=  VALID_AUDIO_IO_DIGITAL_LEVEL;
  		rmh.Cmd[2] |= info->level;
          }
  	if (info->has_monitor_level) {
  		rmh.Cmd[0] |=  VALID_AUDIO_IO_MONITORING_LEVEL;
  		rmh.Cmd[2] |= ((unsigned int)info->monitor_level << 10);
          }
  	if (info->has_mute) { 
  		rmh.Cmd[0] |= VALID_AUDIO_IO_MUTE_LEVEL;
  		if (info->mute)
  			rmh.Cmd[2] |= AUDIO_IO_HAS_MUTE_LEVEL;
  	}
  	if (info->has_monitor_mute) {
  		/* validate flag for M2 at least to unmute it */ 
  		rmh.Cmd[0] |=  VALID_AUDIO_IO_MUTE_MONITORING_1 | VALID_AUDIO_IO_MUTE_MONITORING_2;
  		if (info->monitor_mute)
  			rmh.Cmd[2] |= AUDIO_IO_HAS_MUTE_MONITORING_1;
  	}
  
  	return vx_send_msg(chip, &rmh);
  }
  
      
  #if 0 // not used
  static int vx_read_audio_level(struct vx_core *chip, int audio, int capture,
  			       struct vx_audio_level *info)
  {
  	int err;
  	struct vx_rmh rmh;
  
  	memset(info, 0, sizeof(*info));
          vx_init_rmh(&rmh, CMD_GET_AUDIO_LEVELS);
  	if (capture)
  		rmh.Cmd[0] |= COMMAND_RECORD_MASK;
  	/* Add Audio IO mask */
  	rmh.Cmd[1] = 1 << audio;
  	err = vx_send_msg(chip, &rmh);
  	if (err < 0)
  		return err;
  	info.level = rmh.Stat[0] & MASK_DSP_WORD_LEVEL;
  	info.monitor_level = (rmh.Stat[0] >> 10) & MASK_DSP_WORD_LEVEL;
  	info.mute = (rmh.Stat[i] & AUDIO_IO_HAS_MUTE_LEVEL) ? 1 : 0;
  	info.monitor_mute = (rmh.Stat[i] & AUDIO_IO_HAS_MUTE_MONITORING_1) ? 1 : 0;
  	return 0;
  }
  #endif // not used
  
  /*
   * set the monitoring level and mute state of the given audio
   * no more static, because must be called from vx_pcm to demute monitoring
   */
  int vx_set_monitor_level(struct vx_core *chip, int audio, int level, int active)
  {
  	struct vx_audio_level info;
  
  	memset(&info, 0, sizeof(info));
  	info.has_monitor_level = 1;
  	info.monitor_level = level;
  	info.has_monitor_mute = 1;
  	info.monitor_mute = !active;
  	chip->audio_monitor[audio] = level;
  	chip->audio_monitor_active[audio] = active;
  	return vx_adjust_audio_level(chip, audio, 0, &info); /* playback only */
  }
  
  
  /*
   * set the mute status of the given audio
   */
  static int vx_set_audio_switch(struct vx_core *chip, int audio, int active)
  {
  	struct vx_audio_level info;
  
  	memset(&info, 0, sizeof(info));
  	info.has_mute = 1;
  	info.mute = !active;
  	chip->audio_active[audio] = active;
  	return vx_adjust_audio_level(chip, audio, 0, &info); /* playback only */
  }
  
  /*
   * set the mute status of the given audio
   */
  static int vx_set_audio_gain(struct vx_core *chip, int audio, int capture, int level)
  {
  	struct vx_audio_level info;
  
  	memset(&info, 0, sizeof(info));
  	info.has_level = 1;
  	info.level = level;
  	chip->audio_gain[capture][audio] = level;
  	return vx_adjust_audio_level(chip, audio, capture, &info);
  }
  
  /*
   * reset all audio levels
   */
  static void vx_reset_audio_levels(struct vx_core *chip)
  {
  	unsigned int i, c;
  	struct vx_audio_level info;
  
  	memset(chip->audio_gain, 0, sizeof(chip->audio_gain));
  	memset(chip->audio_active, 0, sizeof(chip->audio_active));
  	memset(chip->audio_monitor, 0, sizeof(chip->audio_monitor));
  	memset(chip->audio_monitor_active, 0, sizeof(chip->audio_monitor_active));
  
  	for (c = 0; c < 2; c++) {
  		for (i = 0; i < chip->hw->num_ins * 2; i++) {
  			memset(&info, 0, sizeof(info));
  			if (c == 0) {
  				info.has_monitor_level = 1;
  				info.has_mute = 1;
  				info.has_monitor_mute = 1;
  			}
  			info.has_level = 1;
  			info.level = CVAL_0DB; /* default: 0dB */
  			vx_adjust_audio_level(chip, i, c, &info);
  			chip->audio_gain[c][i] = CVAL_0DB;
  			chip->audio_monitor[i] = CVAL_0DB;
  		}
  	}
  }
  
  
  /*
   * VU, peak meter record
   */
  
  #define VU_METER_CHANNELS	2
  
  struct vx_vu_meter {
  	int saturated;
  	int vu_level;
  	int peak_level;
  };
  
  /*
   * get the VU and peak meter values
   * @audio: the audio index
   * @capture: 0 = playback, 1 = capture operation
   * @info: the array of vx_vu_meter records (size = 2).
   */
  static int vx_get_audio_vu_meter(struct vx_core *chip, int audio, int capture, struct vx_vu_meter *info)
  {
  	struct vx_rmh rmh;
  	int i, err;
  
  	if (chip->chip_status & VX_STAT_IS_STALE)
  		return -EBUSY;
  
  	vx_init_rmh(&rmh, CMD_AUDIO_VU_PIC_METER);
  	rmh.LgStat += 2 * VU_METER_CHANNELS;
  	if (capture)
  		rmh.Cmd[0] |= COMMAND_RECORD_MASK;
      
          /* Add Audio IO mask */
  	rmh.Cmd[1] = 0;
  	for (i = 0; i < VU_METER_CHANNELS; i++)
  		rmh.Cmd[1] |= 1 << (audio + i);
  	err = vx_send_msg(chip, &rmh);
  	if (err < 0)
  		return err;
  	/* Read response */
  	for (i = 0; i < 2 * VU_METER_CHANNELS; i +=2) {
  		info->saturated = (rmh.Stat[0] & (1 << (audio + i))) ? 1 : 0;
  		info->vu_level = rmh.Stat[i + 1];
  		info->peak_level = rmh.Stat[i + 2];
  		info++;
  	}
  	return 0;
  }
     
  
  /*
   * control API entries
   */
  
  /*
   * output level control
   */
  static int vx_output_level_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
  {
  	struct vx_core *chip = snd_kcontrol_chip(kcontrol);
  	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
  	uinfo->count = 2;
  	uinfo->value.integer.min = 0;
  	uinfo->value.integer.max = chip->hw->output_level_max;
  	return 0;
  }
  
  static int vx_output_level_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  {
  	struct vx_core *chip = snd_kcontrol_chip(kcontrol);
  	int codec = kcontrol->id.index;
  	mutex_lock(&chip->mixer_mutex);
  	ucontrol->value.integer.value[0] = chip->output_level[codec][0];
  	ucontrol->value.integer.value[1] = chip->output_level[codec][1];
  	mutex_unlock(&chip->mixer_mutex);
  	return 0;
  }
  
  static int vx_output_level_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  {
  	struct vx_core *chip = snd_kcontrol_chip(kcontrol);
  	int codec = kcontrol->id.index;
  	unsigned int val[2], vmax;
  
  	vmax = chip->hw->output_level_max;
  	val[0] = ucontrol->value.integer.value[0];
  	val[1] = ucontrol->value.integer.value[1];
  	if (val[0] > vmax || val[1] > vmax)
  		return -EINVAL;
  	mutex_lock(&chip->mixer_mutex);
  	if (val[0] != chip->output_level[codec][0] ||
  	    val[1] != chip->output_level[codec][1]) {
  		vx_set_analog_output_level(chip, codec, val[0], val[1]);
  		chip->output_level[codec][0] = val[0];
  		chip->output_level[codec][1] = val[1];
  		mutex_unlock(&chip->mixer_mutex);
  		return 1;
  	}
  	mutex_unlock(&chip->mixer_mutex);
  	return 0;
  }
  
  static struct snd_kcontrol_new vx_control_output_level = {
  	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
  	.access =	(SNDRV_CTL_ELEM_ACCESS_READWRITE |
  			 SNDRV_CTL_ELEM_ACCESS_TLV_READ),
  	.name =		"Master Playback Volume",
  	.info =		vx_output_level_info,
  	.get =		vx_output_level_get,
  	.put =		vx_output_level_put,
  	/* tlv will be filled later */
  };
  
  /*
   * audio source select
   */
  static int vx_audio_src_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
  {
  	static const char * const texts_mic[3] = {
  		"Digital", "Line", "Mic"
  	};
  	static const char * const texts_vx2[2] = {
  		"Digital", "Analog"
  	};
  	struct vx_core *chip = snd_kcontrol_chip(kcontrol);
  
  	if (chip->type >= VX_TYPE_VXPOCKET)
  		return snd_ctl_enum_info(uinfo, 1, 3, texts_mic);
  	else
  		return snd_ctl_enum_info(uinfo, 1, 2, texts_vx2);
  }
  
  static int vx_audio_src_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  {
  	struct vx_core *chip = snd_kcontrol_chip(kcontrol);
  	ucontrol->value.enumerated.item[0] = chip->audio_source_target;
  	return 0;
  }
  
  static int vx_audio_src_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  {
  	struct vx_core *chip = snd_kcontrol_chip(kcontrol);
  
  	if (chip->type >= VX_TYPE_VXPOCKET) {
  		if (ucontrol->value.enumerated.item[0] > 2)
  			return -EINVAL;
  	} else {
  		if (ucontrol->value.enumerated.item[0] > 1)
  			return -EINVAL;
  	}
  	mutex_lock(&chip->mixer_mutex);
  	if (chip->audio_source_target != ucontrol->value.enumerated.item[0]) {
  		chip->audio_source_target = ucontrol->value.enumerated.item[0];
  		vx_sync_audio_source(chip);
  		mutex_unlock(&chip->mixer_mutex);
  		return 1;
  	}
  	mutex_unlock(&chip->mixer_mutex);
  	return 0;
  }
  
  static struct snd_kcontrol_new vx_control_audio_src = {
  	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
  	.name =		"Capture Source",
  	.info =		vx_audio_src_info,
  	.get =		vx_audio_src_get,
  	.put =		vx_audio_src_put,
  };
  
  /*
   * clock mode selection
   */
  static int vx_clock_mode_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
  {
  	static const char * const texts[3] = {
  		"Auto", "Internal", "External"
  	};
  
  	return snd_ctl_enum_info(uinfo, 1, 3, texts);
  }
  
  static int vx_clock_mode_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  {
  	struct vx_core *chip = snd_kcontrol_chip(kcontrol);
  	ucontrol->value.enumerated.item[0] = chip->clock_mode;
  	return 0;
  }
  
  static int vx_clock_mode_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  {
  	struct vx_core *chip = snd_kcontrol_chip(kcontrol);
  
  	if (ucontrol->value.enumerated.item[0] > 2)
  		return -EINVAL;
  	mutex_lock(&chip->mixer_mutex);
  	if (chip->clock_mode != ucontrol->value.enumerated.item[0]) {
  		chip->clock_mode = ucontrol->value.enumerated.item[0];
  		vx_set_clock(chip, chip->freq);
  		mutex_unlock(&chip->mixer_mutex);
  		return 1;
  	}
  	mutex_unlock(&chip->mixer_mutex);
  	return 0;
  }
  
  static struct snd_kcontrol_new vx_control_clock_mode = {
  	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
  	.name =		"Clock Mode",
  	.info =		vx_clock_mode_info,
  	.get =		vx_clock_mode_get,
  	.put =		vx_clock_mode_put,
  };
  
  /*
   * Audio Gain
   */
  static int vx_audio_gain_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
  {
  	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
  	uinfo->count = 2;
  	uinfo->value.integer.min = 0;
  	uinfo->value.integer.max = CVAL_MAX;
  	return 0;
  }
  
  static int vx_audio_gain_get(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);
  	ucontrol->value.integer.value[0] = chip->audio_gain[capture][audio];
  	ucontrol->value.integer.value[1] = chip->audio_gain[capture][audio+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;
  }
  
  static int vx_audio_monitor_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  {
  	struct vx_core *chip = snd_kcontrol_chip(kcontrol);
  	int audio = kcontrol->private_value & 0xff;
  
  	mutex_lock(&chip->mixer_mutex);
  	ucontrol->value.integer.value[0] = chip->audio_monitor[audio];
  	ucontrol->value.integer.value[1] = chip->audio_monitor[audio+1];
  	mutex_unlock(&chip->mixer_mutex);
  	return 0;
  }
  
  static int vx_audio_monitor_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;
  	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_monitor[audio] ||
  	    val[1] != chip->audio_monitor[audio+1]) {
  		vx_set_monitor_level(chip, audio, val[0],
  				     chip->audio_monitor_active[audio]);
  		vx_set_monitor_level(chip, audio+1, val[1],
  				     chip->audio_monitor_active[audio+1]);
  		mutex_unlock(&chip->mixer_mutex);
  		return 1;
  	}
  	mutex_unlock(&chip->mixer_mutex);
  	return 0;
  }
  
  #define vx_audio_sw_info	snd_ctl_boolean_stereo_info
  
  static int vx_audio_sw_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  {
  	struct vx_core *chip = snd_kcontrol_chip(kcontrol);
  	int audio = kcontrol->private_value & 0xff;
  
  	mutex_lock(&chip->mixer_mutex);
  	ucontrol->value.integer.value[0] = chip->audio_active[audio];
  	ucontrol->value.integer.value[1] = chip->audio_active[audio+1];
  	mutex_unlock(&chip->mixer_mutex);
  	return 0;
  }
  
  static int vx_audio_sw_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;
  
  	mutex_lock(&chip->mixer_mutex);
  	if (ucontrol->value.integer.value[0] != chip->audio_active[audio] ||
  	    ucontrol->value.integer.value[1] != chip->audio_active[audio+1]) {
  		vx_set_audio_switch(chip, audio,
  				    !!ucontrol->value.integer.value[0]);
  		vx_set_audio_switch(chip, audio+1,
  				    !!ucontrol->value.integer.value[1]);
  		mutex_unlock(&chip->mixer_mutex);
  		return 1;
  	}
  	mutex_unlock(&chip->mixer_mutex);
  	return 0;
  }
  
  static int vx_monitor_sw_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  {
  	struct vx_core *chip = snd_kcontrol_chip(kcontrol);
  	int audio = kcontrol->private_value & 0xff;
  
  	mutex_lock(&chip->mixer_mutex);
  	ucontrol->value.integer.value[0] = chip->audio_monitor_active[audio];
  	ucontrol->value.integer.value[1] = chip->audio_monitor_active[audio+1];
  	mutex_unlock(&chip->mixer_mutex);
  	return 0;
  }
  
  static int vx_monitor_sw_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;
  
  	mutex_lock(&chip->mixer_mutex);
  	if (ucontrol->value.integer.value[0] != chip->audio_monitor_active[audio] ||
  	    ucontrol->value.integer.value[1] != chip->audio_monitor_active[audio+1]) {
  		vx_set_monitor_level(chip, audio, chip->audio_monitor[audio],
  				     !!ucontrol->value.integer.value[0]);
  		vx_set_monitor_level(chip, audio+1, chip->audio_monitor[audio+1],
  				     !!ucontrol->value.integer.value[1]);
  		mutex_unlock(&chip->mixer_mutex);
  		return 1;
  	}
  	mutex_unlock(&chip->mixer_mutex);
  	return 0;
  }
  
  static const DECLARE_TLV_DB_SCALE(db_scale_audio_gain, -10975, 25, 0);
  
  static struct snd_kcontrol_new vx_control_audio_gain = {
  	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
  	.access =	(SNDRV_CTL_ELEM_ACCESS_READWRITE |
  			 SNDRV_CTL_ELEM_ACCESS_TLV_READ),
  	/* name will be filled later */
  	.info =         vx_audio_gain_info,
  	.get =          vx_audio_gain_get,
  	.put =          vx_audio_gain_put,
  	.tlv = { .p = db_scale_audio_gain },
  };
  static struct snd_kcontrol_new vx_control_output_switch = {
  	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
  	.name =         "PCM Playback Switch",
  	.info =         vx_audio_sw_info,
  	.get =          vx_audio_sw_get,
  	.put =          vx_audio_sw_put
  };
  static struct snd_kcontrol_new vx_control_monitor_gain = {
  	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
  	.name =         "Monitoring Volume",
  	.access =	(SNDRV_CTL_ELEM_ACCESS_READWRITE |
  			 SNDRV_CTL_ELEM_ACCESS_TLV_READ),
  	.info =         vx_audio_gain_info,	/* shared */
  	.get =          vx_audio_monitor_get,
  	.put =          vx_audio_monitor_put,
  	.tlv = { .p = db_scale_audio_gain },
  };
  static struct snd_kcontrol_new vx_control_monitor_switch = {
  	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
  	.name =         "Monitoring Switch",
  	.info =         vx_audio_sw_info,	/* shared */
  	.get =          vx_monitor_sw_get,
  	.put =          vx_monitor_sw_put
  };
  
  
  /*
   * IEC958 status bits
   */
  static int vx_iec958_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
  {
  	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
  	uinfo->count = 1;
  	return 0;
  }
  
  static int vx_iec958_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  {
  	struct vx_core *chip = snd_kcontrol_chip(kcontrol);
  
  	mutex_lock(&chip->mixer_mutex);
  	ucontrol->value.iec958.status[0] = (chip->uer_bits >> 0) & 0xff;
  	ucontrol->value.iec958.status[1] = (chip->uer_bits >> 8) & 0xff;
  	ucontrol->value.iec958.status[2] = (chip->uer_bits >> 16) & 0xff;
  	ucontrol->value.iec958.status[3] = (chip->uer_bits >> 24) & 0xff;
  	mutex_unlock(&chip->mixer_mutex);
          return 0;
  }
  
  static int vx_iec958_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  {
  	ucontrol->value.iec958.status[0] = 0xff;
  	ucontrol->value.iec958.status[1] = 0xff;
  	ucontrol->value.iec958.status[2] = 0xff;
  	ucontrol->value.iec958.status[3] = 0xff;
          return 0;
  }
  
  static int vx_iec958_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  {
  	struct vx_core *chip = snd_kcontrol_chip(kcontrol);
  	unsigned int val;
  
  	val = (ucontrol->value.iec958.status[0] << 0) |
  	      (ucontrol->value.iec958.status[1] << 8) |
  	      (ucontrol->value.iec958.status[2] << 16) |
  	      (ucontrol->value.iec958.status[3] << 24);
  	mutex_lock(&chip->mixer_mutex);
  	if (chip->uer_bits != val) {
  		chip->uer_bits = val;
  		vx_set_iec958_status(chip, val);
  		mutex_unlock(&chip->mixer_mutex);
  		return 1;
  	}
  	mutex_unlock(&chip->mixer_mutex);
  	return 0;
  }
  
  static struct snd_kcontrol_new vx_control_iec958_mask = {
  	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
  	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
  	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
  	.info =		vx_iec958_info,	/* shared */
  	.get =		vx_iec958_mask_get,
  };
  
  static struct snd_kcontrol_new vx_control_iec958 = {
  	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
  	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
  	.info =         vx_iec958_info,
  	.get =          vx_iec958_get,
  	.put =          vx_iec958_put
  };
  
  
  /*
   * VU meter
   */
  
  #define METER_MAX	0xff
  #define METER_SHIFT	16
  
  static int vx_vu_meter_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
  {
  	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
  	uinfo->count = 2;
  	uinfo->value.integer.min = 0;
  	uinfo->value.integer.max = METER_MAX;
  	return 0;
  }
  
  static int vx_vu_meter_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  {
  	struct vx_core *chip = snd_kcontrol_chip(kcontrol);
  	struct vx_vu_meter meter[2];
  	int audio = kcontrol->private_value & 0xff;
  	int capture = (kcontrol->private_value >> 8) & 1;
  
  	vx_get_audio_vu_meter(chip, audio, capture, meter);
  	ucontrol->value.integer.value[0] = meter[0].vu_level >> METER_SHIFT;
  	ucontrol->value.integer.value[1] = meter[1].vu_level >> METER_SHIFT;
  	return 0;
  }
  
  static int vx_peak_meter_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  {
  	struct vx_core *chip = snd_kcontrol_chip(kcontrol);
  	struct vx_vu_meter meter[2];
  	int audio = kcontrol->private_value & 0xff;
  	int capture = (kcontrol->private_value >> 8) & 1;
  
  	vx_get_audio_vu_meter(chip, audio, capture, meter);
  	ucontrol->value.integer.value[0] = meter[0].peak_level >> METER_SHIFT;
  	ucontrol->value.integer.value[1] = meter[1].peak_level >> METER_SHIFT;
  	return 0;
  }
  
  #define vx_saturation_info	snd_ctl_boolean_stereo_info
  
  static int vx_saturation_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  {
  	struct vx_core *chip = snd_kcontrol_chip(kcontrol);
  	struct vx_vu_meter meter[2];
  	int audio = kcontrol->private_value & 0xff;
  
  	vx_get_audio_vu_meter(chip, audio, 1, meter); /* capture only */
  	ucontrol->value.integer.value[0] = meter[0].saturated;
  	ucontrol->value.integer.value[1] = meter[1].saturated;
  	return 0;
  }
  
  static struct snd_kcontrol_new vx_control_vu_meter = {
  	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
  	.access =	SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
  	/* name will be filled later */
  	.info =		vx_vu_meter_info,
  	.get =		vx_vu_meter_get,
  };
  
  static struct snd_kcontrol_new vx_control_peak_meter = {
  	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
  	.access =	SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
  	/* name will be filled later */
  	.info =		vx_vu_meter_info,	/* shared */
  	.get =		vx_peak_meter_get,
  };
  
  static struct snd_kcontrol_new vx_control_saturation = {
  	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
  	.name =		"Input Saturation",
  	.access =	SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
  	.info =		vx_saturation_info,
  	.get =		vx_saturation_get,
  };
  
  
  
  /*
   *
   */
  
  int snd_vx_mixer_new(struct vx_core *chip)
  {
  	unsigned int i, c;
  	int err;
  	struct snd_kcontrol_new temp;
  	struct snd_card *card = chip->card;
  	char name[32];
  
  	strcpy(card->mixername, card->driver);
  
  	/* output level controls */
  	for (i = 0; i < chip->hw->num_outs; i++) {
  		temp = vx_control_output_level;
  		temp.index = i;
  		temp.tlv.p = chip->hw->output_level_db_scale;
  		if ((err = snd_ctl_add(card, snd_ctl_new1(&temp, chip))) < 0)
  			return err;
  	}
  
  	/* PCM volumes, switches, monitoring */
  	for (i = 0; i < chip->hw->num_outs; i++) {
  		int val = i * 2;
  		temp = vx_control_audio_gain;
  		temp.index = i;
  		temp.name = "PCM Playback Volume";
  		temp.private_value = val;
  		if ((err = snd_ctl_add(card, snd_ctl_new1(&temp, chip))) < 0)
  			return err;
  		temp = vx_control_output_switch;
  		temp.index = i;
  		temp.private_value = val;
  		if ((err = snd_ctl_add(card, snd_ctl_new1(&temp, chip))) < 0)
  			return err;
  		temp = vx_control_monitor_gain;
  		temp.index = i;
  		temp.private_value = val;
  		if ((err = snd_ctl_add(card, snd_ctl_new1(&temp, chip))) < 0)
  			return err;
  		temp = vx_control_monitor_switch;
  		temp.index = i;
  		temp.private_value = val;
  		if ((err = snd_ctl_add(card, snd_ctl_new1(&temp, chip))) < 0)
  			return err;
  	}
  	for (i = 0; i < chip->hw->num_outs; i++) {
  		temp = vx_control_audio_gain;
  		temp.index = i;
  		temp.name = "PCM Capture Volume";
  		temp.private_value = (i * 2) | (1 << 8);
  		if ((err = snd_ctl_add(card, snd_ctl_new1(&temp, chip))) < 0)
  			return err;
  	}
  
  	/* Audio source */
  	if ((err = snd_ctl_add(card, snd_ctl_new1(&vx_control_audio_src, chip))) < 0)
  		return err;
  	/* clock mode */
  	if ((err = snd_ctl_add(card, snd_ctl_new1(&vx_control_clock_mode, chip))) < 0)
  		return err;
  	/* IEC958 controls */
  	if ((err = snd_ctl_add(card, snd_ctl_new1(&vx_control_iec958_mask, chip))) < 0)
  		return err;
  	if ((err = snd_ctl_add(card, snd_ctl_new1(&vx_control_iec958, chip))) < 0)
  		return err;
  	/* VU, peak, saturation meters */
  	for (c = 0; c < 2; c++) {
  		static char *dir[2] = { "Output", "Input" };
  		for (i = 0; i < chip->hw->num_ins; i++) {
  			int val = (i * 2) | (c << 8);
  			if (c == 1) {
  				temp = vx_control_saturation;
  				temp.index = i;
  				temp.private_value = val;
  				if ((err = snd_ctl_add(card, snd_ctl_new1(&temp, chip))) < 0)
  					return err;
  			}
  			sprintf(name, "%s VU Meter", dir[c]);
  			temp = vx_control_vu_meter;
  			temp.index = i;
  			temp.name = name;
  			temp.private_value = val;
  			if ((err = snd_ctl_add(card, snd_ctl_new1(&temp, chip))) < 0)
  				return err;
  			sprintf(name, "%s Peak Meter", dir[c]);
  			temp = vx_control_peak_meter;
  			temp.index = i;
  			temp.name = name;
  			temp.private_value = val;
  			if ((err = snd_ctl_add(card, snd_ctl_new1(&temp, chip))) < 0)
  				return err;
  		}
  	}
  	vx_reset_audio_levels(chip);
  	return 0;
  }
  