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wtm.c

/*
 *    ALSA driver for ICEnsemble VT1724 (Envy24HT)
 *    
 *    Lowlevel functions for Ego Sys Waveterminal 192M
 *
 *          Copyright (c) 2006 Guedez Clement <klem.dev@gmail.com>
 *          Some functions are taken from the Prodigy192 driver
 *          source
 *          
 *    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 <asm/io.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <sound/core.h>

#include "ice1712.h"
#include "envy24ht.h"
#include "wtm.h"
#include "stac946x.h"


/*
 *    2*ADC 6*DAC no1 ringbuffer r/w on i2c bus 
 */
static inline void stac9460_put(struct snd_ice1712 *ice, int reg, 
                                    unsigned char val)
{
      snd_vt1724_write_i2c(ice, STAC9460_I2C_ADDR, reg, val);
}

static inline unsigned char stac9460_get(struct snd_ice1712 *ice, int reg)
{
      return snd_vt1724_read_i2c(ice, STAC9460_I2C_ADDR, reg);
}

/*
 *    2*ADC 2*DAC no2 ringbuffer r/w on i2c bus
 */
static inline void stac9460_2_put(struct snd_ice1712 *ice, int reg,
                                    unsigned char val)
{
      snd_vt1724_write_i2c(ice, STAC9460_2_I2C_ADDR, reg, val);
}

static inline unsigned char stac9460_2_get(struct snd_ice1712 *ice, int reg)
{
      return snd_vt1724_read_i2c(ice, STAC9460_2_I2C_ADDR, reg);
}


/*
 *    DAC mute control
 */
#define stac9460_dac_mute_info            snd_ctl_boolean_mono_info

static int stac9460_dac_mute_get(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_value *ucontrol)
{
      struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
      unsigned char val;
      int idx, id;

      if (kcontrol->private_value) {
            idx = STAC946X_MASTER_VOLUME;
            id = 0;
      } else {
            id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
            idx = id + STAC946X_LF_VOLUME;
      }
      if (id < 6)
            val = stac9460_get(ice, idx);
      else 
            val = stac9460_2_get(ice,idx - 6);
      ucontrol->value.integer.value[0] = (~val >> 7) & 0x1;
      return 0;
}

static int stac9460_dac_mute_put(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_value *ucontrol)
{
      struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
      unsigned char new, old;
      int id, idx;
      int change;

      if (kcontrol->private_value) {
            idx = STAC946X_MASTER_VOLUME;
            old = stac9460_get(ice, idx);
            new = (~ucontrol->value.integer.value[0]<< 7 & 0x80) |
                                                (old & ~0x80);
            change = (new != old);
            if (change) {
                  stac9460_put(ice, idx, new);
                  stac9460_2_put(ice, idx, new);
            }
      } else {
            id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
            idx = id + STAC946X_LF_VOLUME;
            if (id < 6)
                  old = stac9460_get(ice, idx);
            else 
                  old = stac9460_2_get(ice, idx - 6);
            new = (~ucontrol->value.integer.value[0]<< 7 & 0x80) |
                                          (old & ~0x80);
            change = (new != old);
            if (change) {
                  if (id < 6)
                              stac9460_put(ice, idx, new);
                  else
                              stac9460_2_put(ice, idx - 6, new);
            }
      }
      return change;
}

/*
 *    DAC volume attenuation mixer control
 */
static int stac9460_dac_vol_info(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_info *uinfo)
{
      uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
      uinfo->count = 1;
      uinfo->value.integer.min = 0;             /* mute */
      uinfo->value.integer.max = 0x7f;          /* 0dB */
      return 0;
}

static int stac9460_dac_vol_get(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_value *ucontrol)
{
      struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
      int idx, id;
      unsigned char vol;

      if (kcontrol->private_value) {
            idx = STAC946X_MASTER_VOLUME;
            id = 0;
      } else {
            id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
            idx = id + STAC946X_LF_VOLUME;
      }
      if (id < 6)
            vol = stac9460_get(ice, idx) & 0x7f;
      else 
            vol = stac9460_2_get(ice, idx - 6) & 0x7f;
      ucontrol->value.integer.value[0] = 0x7f - vol;
      return 0;
}

static int stac9460_dac_vol_put(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_value *ucontrol)
{
      struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
      int idx, id;
      unsigned char tmp, ovol, nvol;
      int change;

      if (kcontrol->private_value) {
            idx = STAC946X_MASTER_VOLUME;
            nvol = ucontrol->value.integer.value[0] & 0x7f;
            tmp = stac9460_get(ice, idx);
            ovol = 0x7f - (tmp & 0x7f);
            change = (ovol != nvol);
            if (change) {
                   stac9460_put(ice, idx, (0x7f - nvol) | (tmp & 0x80));
                   stac9460_2_put(ice, idx, (0x7f - nvol) | (tmp & 0x80));
            }
      } else {
            id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
            idx = id + STAC946X_LF_VOLUME;
            nvol = ucontrol->value.integer.value[0] & 0x7f;
            if (id < 6)
                  tmp = stac9460_get(ice, idx);
            else 
                  tmp = stac9460_2_get(ice, idx - 6);
            ovol = 0x7f - (tmp & 0x7f);
            change = (ovol != nvol);
            if (change) {
                  if (id < 6)
                        stac9460_put(ice, idx, (0x7f - nvol) |
                                                (tmp & 0x80));
                  else 
                        stac9460_2_put(ice, idx-6, (0x7f - nvol) |
                                                      (tmp & 0x80));
            }
      }
      return change;
}

/*
 * ADC mute control
 */
#define stac9460_adc_mute_info            snd_ctl_boolean_stereo_info

static int stac9460_adc_mute_get(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_value *ucontrol)
{
      struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
      unsigned char val;
      int i, id;
      
      id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
      if (id == 0) {
            for (i = 0; i < 2; ++i) {
                  val = stac9460_get(ice, STAC946X_MIC_L_VOLUME + i);
                  ucontrol->value.integer.value[i] = ~val>>7 & 0x1;
            }
      } else {
            for (i = 0; i < 2; ++i) {
                  val = stac9460_2_get(ice, STAC946X_MIC_L_VOLUME + i);
                  ucontrol->value.integer.value[i] = ~val>>7 & 0x1;
            }
      }
      return 0;
}

static int stac9460_adc_mute_put(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_value *ucontrol)
{
      struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
      unsigned char new, old;
      int i, reg, id;
      int change;
      
      id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
      if (id == 0) {
            for (i = 0; i < 2; ++i) {
                  reg = STAC946X_MIC_L_VOLUME + i;
                  old = stac9460_get(ice, reg);
                  new = (~ucontrol->value.integer.value[i]<<7&0x80) |
                                                      (old&~0x80);
                  change = (new != old);
                  if (change)
                        stac9460_put(ice, reg, new);
            }
      } else {
            for (i = 0; i < 2; ++i) {
                  reg = STAC946X_MIC_L_VOLUME + i;
                  old = stac9460_2_get(ice, reg);
                  new = (~ucontrol->value.integer.value[i]<<7&0x80) |
                                                      (old&~0x80);
                  change = (new != old);
                  if (change)
                        stac9460_2_put(ice, reg, new);
            }
      }
      return change;
}

/*
 *ADC gain mixer control
 */
static int stac9460_adc_vol_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;       /* 0dB */
      uinfo->value.integer.max = 0x0f;    /* 22.5dB */
      return 0;
}

static int stac9460_adc_vol_get(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_value *ucontrol)
{
      struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
      int i, reg, id;
      unsigned char vol;
      
      id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
      if (id == 0) {
            for (i = 0; i < 2; ++i) {
                  reg = STAC946X_MIC_L_VOLUME + i;
                  vol = stac9460_get(ice, reg) & 0x0f;
                  ucontrol->value.integer.value[i] = 0x0f - vol;
            }
      } else {
            for (i = 0; i < 2; ++i) {
                  reg = STAC946X_MIC_L_VOLUME + i;
                  vol = stac9460_2_get(ice, reg) & 0x0f;
                  ucontrol->value.integer.value[i] = 0x0f - vol;
            }
      }
      return 0;
}

static int stac9460_adc_vol_put(struct snd_kcontrol *kcontrol,
                        struct snd_ctl_elem_value *ucontrol)
{
      struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
      int i, reg, id;
      unsigned char ovol, nvol;
      int change;
      
      id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
      if (id == 0) {
            for (i = 0; i < 2; ++i) {
                  reg = STAC946X_MIC_L_VOLUME + i;
                  nvol = ucontrol->value.integer.value[i] & 0x0f;
                  ovol = 0x0f - stac9460_get(ice, reg);
                  change = ((ovol & 0x0f) != nvol);
                  if (change)
                        stac9460_put(ice, reg, (0x0f - nvol) |
                                                (ovol & ~0x0f));
            }
      } else {
            for (i = 0; i < 2; ++i) {
                  reg = STAC946X_MIC_L_VOLUME + i;
                  nvol = ucontrol->value.integer.value[i] & 0x0f;
                  ovol = 0x0f - stac9460_2_get(ice, reg);
                  change = ((ovol & 0x0f) != nvol);
                  if (change)
                        stac9460_2_put(ice, reg, (0x0f - nvol) |
                                                (ovol & ~0x0f));
            }
      }
      return change;
}

/*
 * MIC / LINE switch fonction
 */

#define stac9460_mic_sw_info        snd_ctl_boolean_mono_info

static int stac9460_mic_sw_get(struct snd_kcontrol *kcontrol,
                        struct snd_ctl_elem_value *ucontrol)
{
      struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
      unsigned char val;
      int id;
            
      id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
      if (id == 0)
                  val = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
      else
                  val = stac9460_2_get(ice, STAC946X_GENERAL_PURPOSE);
      ucontrol->value.integer.value[0] = ~val>>7 & 0x1;
      return 0;
}

static int stac9460_mic_sw_put(struct snd_kcontrol *kcontrol,
                        struct snd_ctl_elem_value *ucontrol)
{
      struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
      unsigned char new, old;
      int change, id;

      id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
      if (id == 0)
                  old = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
      else
                  old = stac9460_2_get(ice, STAC946X_GENERAL_PURPOSE);
      new = (~ucontrol->value.integer.value[0]<< 7 & 0x80) | (old & ~0x80);
      change = (new != old);
      if (change) {
            if (id == 0)
                        stac9460_put(ice, STAC946X_GENERAL_PURPOSE, new);
            else
                        stac9460_2_put(ice, STAC946X_GENERAL_PURPOSE, new);
      }
      return change;
}

/*
 * Control tabs
 */
static struct snd_kcontrol_new stac9640_controls[] __devinitdata = {
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Master Playback Switch",
            .info = stac9460_dac_mute_info,
            .get = stac9460_dac_mute_get,
            .put = stac9460_dac_mute_put,
            .private_value = 1
      },
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Master Playback Volume",
            .info = stac9460_dac_vol_info,
            .get = stac9460_dac_vol_get,
            .put = stac9460_dac_vol_put,
            .private_value = 1,
      },
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "MIC/Line switch",
            .count = 2,
            .info = stac9460_mic_sw_info,
            .get = stac9460_mic_sw_get,
            .put = stac9460_mic_sw_put,

      },
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "DAC Switch",
            .count = 8,
            .info = stac9460_dac_mute_info,
            .get = stac9460_dac_mute_get,
            .put = stac9460_dac_mute_put,
      },
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "DAC Volume",
            .count = 8,
            .info = stac9460_dac_vol_info,
            .get = stac9460_dac_vol_get,
            .put = stac9460_dac_vol_put,
      },
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "ADC Switch",
            .count = 2,
            .info = stac9460_adc_mute_info,
            .get = stac9460_adc_mute_get,
            .put = stac9460_adc_mute_put,
      },
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "ADC Volume",
            .count = 2,
            .info = stac9460_adc_vol_info,
            .get = stac9460_adc_vol_get,
            .put = stac9460_adc_vol_put,

      }     
};



/*INIT*/
static int __devinit wtm_add_controls(struct snd_ice1712 *ice)
{
      unsigned int i;
      int err;

      for (i = 0; i < ARRAY_SIZE(stac9640_controls); i++) {
            err = snd_ctl_add(ice->card,
                        snd_ctl_new1(&stac9640_controls[i], ice));
            if (err < 0)
                  return err;
      }
      return 0;
}

static int __devinit wtm_init(struct snd_ice1712 *ice)
{
      static unsigned short stac_inits_prodigy[] = {
            STAC946X_RESET, 0,
            (unsigned short)-1
      };
      unsigned short *p;
            
      /*WTM 192M*/
      ice->num_total_dacs = 8;
      ice->num_total_adcs = 4;
      ice->force_rdma1 = 1;

      /*initialize codec*/
      p = stac_inits_prodigy;
      for (; *p != (unsigned short)-1; p += 2) {
            stac9460_put(ice, p[0], p[1]);
            stac9460_2_put(ice, p[0], p[1]);
      }
      return 0;
}


static unsigned char wtm_eeprom[] __devinitdata = {
      0x47, /*SYSCONF: clock 192KHz, 4ADC, 8DAC */
      0x80, /* ACLINK : I2S */
      0xf8, /* I2S: vol; 96k, 24bit, 192k */
      0xc1  /*SPDIF: out-en, spidf ext out*/,
      0x9f, /* GPIO_DIR */
      0xff, /* GPIO_DIR1 */
      0x7f, /* GPIO_DIR2 */
      0x9f, /* GPIO_MASK */
      0xff, /* GPIO_MASK1 */
      0x7f, /* GPIO_MASK2 */
      0x16, /* GPIO_STATE */
      0x80, /* GPIO_STATE1 */
      0x00, /* GPIO_STATE2 */
};


/*entry point*/
struct snd_ice1712_card_info snd_vt1724_wtm_cards[] __devinitdata = {
      {
            .subvendor = VT1724_SUBDEVICE_WTM,
            .name = "ESI Waveterminal 192M",
            .model = "WT192M",
            .chip_init = wtm_init,
            .build_controls = wtm_add_controls,
            .eeprom_size = sizeof(wtm_eeprom),
            .eeprom_data = wtm_eeprom,
      },
      {} /*terminator*/
};

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