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revo.c

/*
 *   ALSA driver for ICEnsemble ICE1712 (Envy24)
 *
 *   Lowlevel functions for M-Audio Revolution 7.1
 *
 *    Copyright (c) 2003 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/driver.h>
#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 "revo.h"

static void revo_i2s_mclk_changed(struct snd_ice1712 *ice)
{
      /* assert PRST# to converters; MT05 bit 7 */
      outb(inb(ICEMT1724(ice, AC97_CMD)) | 0x80, ICEMT1724(ice, AC97_CMD));
      mdelay(5);
      /* deassert PRST# */
      outb(inb(ICEMT1724(ice, AC97_CMD)) & ~0x80, ICEMT1724(ice, AC97_CMD));
}

/*
 * change the rate of envy24HT, AK4355 and AK4381
 */
static void revo_set_rate_val(struct snd_akm4xxx *ak, unsigned int rate)
{
      unsigned char old, tmp, dfs;
      int reg, shift;

      if (rate == 0)    /* no hint - S/PDIF input is master, simply return */
            return;

      /* adjust DFS on codecs */
      if (rate > 96000)
            dfs = 2;
      else if (rate > 48000)
            dfs = 1;
      else
            dfs = 0;

      if (ak->type == SND_AK4355 || ak->type == SND_AK4358) {
            reg = 2;
            shift = 4;
      } else {
            reg = 1;
            shift = 3;
      }
      tmp = snd_akm4xxx_get(ak, 0, reg);
      old = (tmp >> shift) & 0x03;
      if (old == dfs)
            return;

      /* reset DFS */
      snd_akm4xxx_reset(ak, 1);
      tmp = snd_akm4xxx_get(ak, 0, reg);
      tmp &= ~(0x03 << shift);
      tmp |= dfs << shift;
      // snd_akm4xxx_write(ak, 0, reg, tmp);
      snd_akm4xxx_set(ak, 0, reg, tmp); /* the value is written in reset(0) */
      snd_akm4xxx_reset(ak, 0);
}

/*
 * I2C access to the PT2258 volume controller on GPIO 6/7 (Revolution 5.1)
 */

static void revo_i2c_start(struct snd_i2c_bus *bus)
{
      struct snd_ice1712 *ice = bus->private_data;
      snd_ice1712_save_gpio_status(ice);
}

static void revo_i2c_stop(struct snd_i2c_bus *bus)
{
      struct snd_ice1712 *ice = bus->private_data;
      snd_ice1712_restore_gpio_status(ice);
}

static void revo_i2c_direction(struct snd_i2c_bus *bus, int clock, int data)
{
      struct snd_ice1712 *ice = bus->private_data;
      unsigned int mask, val;

      val = 0;
      if (clock)
            val |= VT1724_REVO_I2C_CLOCK; /* write SCL */
      if (data)
            val |= VT1724_REVO_I2C_DATA;  /* write SDA */
      mask = VT1724_REVO_I2C_CLOCK | VT1724_REVO_I2C_DATA;
      ice->gpio.direction &= ~mask;
      ice->gpio.direction |= val;
      snd_ice1712_gpio_set_dir(ice, ice->gpio.direction);
      snd_ice1712_gpio_set_mask(ice, ~mask);
}

static void revo_i2c_setlines(struct snd_i2c_bus *bus, int clk, int data)
{
      struct snd_ice1712 *ice = bus->private_data;
      unsigned int val = 0;

      if (clk)
            val |= VT1724_REVO_I2C_CLOCK;
      if (data)
            val |= VT1724_REVO_I2C_DATA;
      snd_ice1712_gpio_write_bits(ice,
                            VT1724_REVO_I2C_DATA |
                            VT1724_REVO_I2C_CLOCK, val);
      udelay(5);
}

static int revo_i2c_getdata(struct snd_i2c_bus *bus, int ack)
{
      struct snd_ice1712 *ice = bus->private_data;
      int bit;

      if (ack)
            udelay(5);
      bit = snd_ice1712_gpio_read_bits(ice, VT1724_REVO_I2C_DATA) ? 1 : 0;
      return bit;
}

static struct snd_i2c_bit_ops revo51_bit_ops = {
      .start = revo_i2c_start,
      .stop = revo_i2c_stop,
      .direction = revo_i2c_direction,
      .setlines = revo_i2c_setlines,
      .getdata = revo_i2c_getdata,
};

static int revo51_i2c_init(struct snd_ice1712 *ice,
                     struct snd_pt2258 *pt)
{
      int err;

      /* create the I2C bus */
      err = snd_i2c_bus_create(ice->card, "ICE1724 GPIO6", NULL, &ice->i2c);
      if (err < 0)
            return err;

      ice->i2c->private_data = ice;
      ice->i2c->hw_ops.bit = &revo51_bit_ops;

      /* create the I2C device */
      err = snd_i2c_device_create(ice->i2c, "PT2258", 0x40,
                            &ice->spec.revo51.dev);
      if (err < 0)
            return err;

      pt->card = ice->card;
      pt->i2c_bus = ice->i2c;
      pt->i2c_dev = ice->spec.revo51.dev;
      ice->spec.revo51.pt2258 = pt;

      snd_pt2258_reset(pt);

      return 0;
}

/*
 * initialize the chips on M-Audio Revolution cards
 */

#define AK_DAC(xname,xch) { .name = xname, .num_channels = xch }

static const struct snd_akm4xxx_dac_channel revo71_front[] = {
      {
            .name = "PCM Playback Volume",
            .num_channels = 2,
            /* front channels DAC supports muting */
            .switch_name = "PCM Playback Switch",
      },
};

static const struct snd_akm4xxx_dac_channel revo71_surround[] = {
      AK_DAC("PCM Center Playback Volume", 1),
      AK_DAC("PCM LFE Playback Volume", 1),
      AK_DAC("PCM Side Playback Volume", 2),
      AK_DAC("PCM Rear Playback Volume", 2),
};

static const struct snd_akm4xxx_dac_channel revo51_dac[] = {
      AK_DAC("PCM Playback Volume", 2),
      AK_DAC("PCM Center Playback Volume", 1),
      AK_DAC("PCM LFE Playback Volume", 1),
      AK_DAC("PCM Rear Playback Volume", 2),
};

static const char *revo51_adc_input_names[] = {
      "Mic",
      "Line",
      "CD",
      NULL
};

static const struct snd_akm4xxx_adc_channel revo51_adc[] = {
      {
            .name = "PCM Capture Volume",
            .switch_name = "PCM Capture Switch",
            .num_channels = 2,
            .input_names = revo51_adc_input_names
      },
};

static struct snd_akm4xxx akm_revo_front __devinitdata = {
      .type = SND_AK4381,
      .num_dacs = 2,
      .ops = {
            .set_rate_val = revo_set_rate_val
      },
      .dac_info = revo71_front,
};

static struct snd_ak4xxx_private akm_revo_front_priv __devinitdata = {
      .caddr = 1,
      .cif = 0,
      .data_mask = VT1724_REVO_CDOUT,
      .clk_mask = VT1724_REVO_CCLK,
      .cs_mask = VT1724_REVO_CS0 | VT1724_REVO_CS1 | VT1724_REVO_CS2,
      .cs_addr = VT1724_REVO_CS0 | VT1724_REVO_CS2,
      .cs_none = VT1724_REVO_CS0 | VT1724_REVO_CS1 | VT1724_REVO_CS2,
      .add_flags = VT1724_REVO_CCLK, /* high at init */
      .mask_flags = 0,
};

static struct snd_akm4xxx akm_revo_surround __devinitdata = {
      .type = SND_AK4355,
      .idx_offset = 1,
      .num_dacs = 6,
      .ops = {
            .set_rate_val = revo_set_rate_val
      },
      .dac_info = revo71_surround,
};

static struct snd_ak4xxx_private akm_revo_surround_priv __devinitdata = {
      .caddr = 3,
      .cif = 0,
      .data_mask = VT1724_REVO_CDOUT,
      .clk_mask = VT1724_REVO_CCLK,
      .cs_mask = VT1724_REVO_CS0 | VT1724_REVO_CS1 | VT1724_REVO_CS2,
      .cs_addr = VT1724_REVO_CS0 | VT1724_REVO_CS1,
      .cs_none = VT1724_REVO_CS0 | VT1724_REVO_CS1 | VT1724_REVO_CS2,
      .add_flags = VT1724_REVO_CCLK, /* high at init */
      .mask_flags = 0,
};

static struct snd_akm4xxx akm_revo51 __devinitdata = {
      .type = SND_AK4358,
      .num_dacs = 6,
      .ops = {
            .set_rate_val = revo_set_rate_val
      },
      .dac_info = revo51_dac,
};

static struct snd_ak4xxx_private akm_revo51_priv __devinitdata = {
      .caddr = 2,
      .cif = 0,
      .data_mask = VT1724_REVO_CDOUT,
      .clk_mask = VT1724_REVO_CCLK,
      .cs_mask = VT1724_REVO_CS0 | VT1724_REVO_CS1,
      .cs_addr = VT1724_REVO_CS1,
      .cs_none = VT1724_REVO_CS0 | VT1724_REVO_CS1,
      .add_flags = VT1724_REVO_CCLK, /* high at init */
      .mask_flags = 0,
};

static struct snd_akm4xxx akm_revo51_adc __devinitdata = {
      .type = SND_AK5365,
      .num_adcs = 2,
      .adc_info = revo51_adc,
};

static struct snd_ak4xxx_private akm_revo51_adc_priv __devinitdata = {
      .caddr = 2,
      .cif = 0,
      .data_mask = VT1724_REVO_CDOUT,
      .clk_mask = VT1724_REVO_CCLK,
      .cs_mask = VT1724_REVO_CS0 | VT1724_REVO_CS1,
      .cs_addr = VT1724_REVO_CS0,
      .cs_none = VT1724_REVO_CS0 | VT1724_REVO_CS1,
      .add_flags = VT1724_REVO_CCLK, /* high at init */
      .mask_flags = 0,
};

static struct snd_pt2258 ptc_revo51_volume;

/* AK4358 for AP192 DAC, AK5385A for ADC */
static void ap192_set_rate_val(struct snd_akm4xxx *ak, unsigned int rate)
{
      struct snd_ice1712 *ice = ak->private_data[0];

      revo_set_rate_val(ak, rate);

#if 1 /* FIXME: do we need this procedure? */
      /* reset DFS pin of AK5385A for ADC, too */
      /* DFS0 (pin 18) -- GPIO10 pin 77 */
      snd_ice1712_save_gpio_status(ice);
      snd_ice1712_gpio_write_bits(ice, 1 << 10,
                            rate > 48000 ? (1 << 10) : 0);
      snd_ice1712_restore_gpio_status(ice);
#endif
}

static const struct snd_akm4xxx_dac_channel ap192_dac[] = {
      AK_DAC("PCM Playback Volume", 2)
};

static struct snd_akm4xxx akm_ap192 __devinitdata = {
      .type = SND_AK4358,
      .num_dacs = 2,
      .ops = {
            .set_rate_val = ap192_set_rate_val
      },
      .dac_info = ap192_dac,
};

static struct snd_ak4xxx_private akm_ap192_priv __devinitdata = {
      .caddr = 2,
      .cif = 0,
      .data_mask = VT1724_REVO_CDOUT,
      .clk_mask = VT1724_REVO_CCLK,
      .cs_mask = VT1724_REVO_CS0 | VT1724_REVO_CS3,
      .cs_addr = VT1724_REVO_CS3,
      .cs_none = VT1724_REVO_CS0 | VT1724_REVO_CS3,
      .add_flags = VT1724_REVO_CCLK, /* high at init */
      .mask_flags = 0,
};

#if 0
/* FIXME: ak4114 makes the sound much lower due to some confliction,
 *        so let's disable it right now...
 */
#define BUILD_AK4114_AP192
#endif

#ifdef BUILD_AK4114_AP192
/* AK4114 support on Audiophile 192 */
/* CDTO (pin 32) -- GPIO2 pin 52
 * CDTI (pin 33) -- GPIO3 pin 53 (shared with AK4358)
 * CCLK (pin 34) -- GPIO1 pin 51 (shared with AK4358)
 * CSN  (pin 35) -- GPIO7 pin 59
 */
#define AK4114_ADDR     0x00

static void write_data(struct snd_ice1712 *ice, unsigned int gpio,
                   unsigned int data, int idx)
{
      for (; idx >= 0; idx--) {
            /* drop clock */
            gpio &= ~VT1724_REVO_CCLK;
            snd_ice1712_gpio_write(ice, gpio);
            udelay(1);
            /* set data */
            if (data & (1 << idx))
                  gpio |= VT1724_REVO_CDOUT;
            else
                  gpio &= ~VT1724_REVO_CDOUT;
            snd_ice1712_gpio_write(ice, gpio);
            udelay(1);
            /* raise clock */
            gpio |= VT1724_REVO_CCLK;
            snd_ice1712_gpio_write(ice, gpio);
            udelay(1);
      }
}

static unsigned char read_data(struct snd_ice1712 *ice, unsigned int gpio,
                         int idx)
{
      unsigned char data = 0;

      for (; idx >= 0; idx--) {
            /* drop clock */
            gpio &= ~VT1724_REVO_CCLK;
            snd_ice1712_gpio_write(ice, gpio);
            udelay(1);
            /* read data */
            if (snd_ice1712_gpio_read(ice) & VT1724_REVO_CDIN)
                  data |= (1 << idx);
            udelay(1);
            /* raise clock */
            gpio |= VT1724_REVO_CCLK;
            snd_ice1712_gpio_write(ice, gpio);
            udelay(1);
      }
      return data;
}

static unsigned int ap192_4wire_start(struct snd_ice1712 *ice)
{
      unsigned int tmp;

      snd_ice1712_save_gpio_status(ice);
      tmp = snd_ice1712_gpio_read(ice);
      tmp |= VT1724_REVO_CCLK; /* high at init */
      tmp |= VT1724_REVO_CS0;
      tmp &= ~VT1724_REVO_CS3;
      snd_ice1712_gpio_write(ice, tmp);
      udelay(1);
      return tmp;
}

static void ap192_4wire_finish(struct snd_ice1712 *ice, unsigned int tmp)
{
      tmp |= VT1724_REVO_CS3;
      tmp |= VT1724_REVO_CS0;
      snd_ice1712_gpio_write(ice, tmp);
      udelay(1);
      snd_ice1712_restore_gpio_status(ice);
}

static void ap192_ak4114_write(void *private_data, unsigned char addr,
                         unsigned char data)
{
      struct snd_ice1712 *ice = private_data;
      unsigned int tmp, addrdata;

      tmp = ap192_4wire_start(ice);
      addrdata = (AK4114_ADDR << 6) | 0x20 | (addr & 0x1f);
      addrdata = (addrdata << 8) | data;
      write_data(ice, tmp, addrdata, 15);
      ap192_4wire_finish(ice, tmp);
}

static unsigned char ap192_ak4114_read(void *private_data, unsigned char addr)
{
      struct snd_ice1712 *ice = private_data;
      unsigned int tmp;
      unsigned char data;

      tmp = ap192_4wire_start(ice);
      write_data(ice, tmp, (AK4114_ADDR << 6) | (addr & 0x1f), 7);
      data = read_data(ice, tmp, 7);
      ap192_4wire_finish(ice, tmp);
      return data;
}

static int __devinit ap192_ak4114_init(struct snd_ice1712 *ice)
{
      static const unsigned char ak4114_init_vals[] = {
            AK4114_RST | AK4114_PWN | AK4114_OCKS0 | AK4114_OCKS1,
            AK4114_DIF_I24I2S,
            AK4114_TX1E,
            AK4114_EFH_1024 | AK4114_DIT | AK4114_IPS(1),
            0,
            0
      };
      static const unsigned char ak4114_init_txcsb[] = {
            0x41, 0x02, 0x2c, 0x00, 0x00
      };
      struct ak4114 *ak;
      int err;

      return snd_ak4114_create(ice->card,
                         ap192_ak4114_read,
                         ap192_ak4114_write,
                         ak4114_init_vals, ak4114_init_txcsb,
                         ice, &ak);
}
#endif /* BUILD_AK4114_AP192 */

static int __devinit revo_init(struct snd_ice1712 *ice)
{
      struct snd_akm4xxx *ak;
      int err;

      /* determine I2C, DACs and ADCs */
      switch (ice->eeprom.subvendor) {
      case VT1724_SUBDEVICE_REVOLUTION71:
            ice->num_total_dacs = 8;
            ice->num_total_adcs = 2;
            ice->gpio.i2s_mclk_changed = revo_i2s_mclk_changed;
            break;
      case VT1724_SUBDEVICE_REVOLUTION51:
            ice->num_total_dacs = 6;
            ice->num_total_adcs = 2;
            break;
      case VT1724_SUBDEVICE_AUDIOPHILE192:
            ice->num_total_dacs = 2;
            ice->num_total_adcs = 2;
            break;
      default:
            snd_BUG();
            return -EINVAL;
      }

      /* second stage of initialization, analog parts and others */
      ak = ice->akm = kcalloc(2, sizeof(struct snd_akm4xxx), GFP_KERNEL);
      if (! ak)
            return -ENOMEM;
      ice->akm_codecs = 2;
      switch (ice->eeprom.subvendor) {
      case VT1724_SUBDEVICE_REVOLUTION71:
            ice->akm_codecs = 2;
            if ((err = snd_ice1712_akm4xxx_init(ak, &akm_revo_front, &akm_revo_front_priv, ice)) < 0)
                  return err;
            if ((err = snd_ice1712_akm4xxx_init(ak + 1, &akm_revo_surround, &akm_revo_surround_priv, ice)) < 0)
                  return err;
            /* unmute all codecs */
            snd_ice1712_gpio_write_bits(ice, VT1724_REVO_MUTE, VT1724_REVO_MUTE);
            break;
      case VT1724_SUBDEVICE_REVOLUTION51:
            ice->akm_codecs = 2;
            err = snd_ice1712_akm4xxx_init(ak, &akm_revo51,
                                     &akm_revo51_priv, ice);
            if (err < 0)
                  return err;
            err = snd_ice1712_akm4xxx_init(ak+1, &akm_revo51_adc,
                                     &akm_revo51_adc_priv, ice);
            if (err < 0)
                  return err;
            err = revo51_i2c_init(ice, &ptc_revo51_volume);
            if (err < 0)
                  return err;
            /* unmute all codecs */
            snd_ice1712_gpio_write_bits(ice, VT1724_REVO_MUTE,
                                  VT1724_REVO_MUTE);
            break;
      case VT1724_SUBDEVICE_AUDIOPHILE192:
            ice->akm_codecs = 1;
            err = snd_ice1712_akm4xxx_init(ak, &akm_ap192, &akm_ap192_priv,
                                     ice);
            if (err < 0)
                  return err;
            
            break;
      }

      return 0;
}


static int __devinit revo_add_controls(struct snd_ice1712 *ice)
{
      int err;

      switch (ice->eeprom.subvendor) {
      case VT1724_SUBDEVICE_REVOLUTION71:
            err = snd_ice1712_akm4xxx_build_controls(ice);
            if (err < 0)
                  return err;
            break;
      case VT1724_SUBDEVICE_REVOLUTION51:
            err = snd_ice1712_akm4xxx_build_controls(ice);
            if (err < 0)
                  return err;
            err = snd_pt2258_build_controls(ice->spec.revo51.pt2258);
            if (err < 0)
                  return err;
            break;
      case VT1724_SUBDEVICE_AUDIOPHILE192:
            err = snd_ice1712_akm4xxx_build_controls(ice);
            if (err < 0)
                  return err;
#ifdef BUILD_AK4114_AP192
            err = ap192_ak4114_init(ice);
            if (err < 0)
                  return err;
#endif
            break;
      }
      return 0;
}

/* entry point */
struct snd_ice1712_card_info snd_vt1724_revo_cards[] __devinitdata = {
      {
            .subvendor = VT1724_SUBDEVICE_REVOLUTION71,
            .name = "M Audio Revolution-7.1",
            .model = "revo71",
            .chip_init = revo_init,
            .build_controls = revo_add_controls,
      },
      {
            .subvendor = VT1724_SUBDEVICE_REVOLUTION51,
            .name = "M Audio Revolution-5.1",
            .model = "revo51",
            .chip_init = revo_init,
            .build_controls = revo_add_controls,
      },
      {
            .subvendor = VT1724_SUBDEVICE_AUDIOPHILE192,
            .name = "M Audio Audiophile192",
            .model = "ap192",
            .chip_init = revo_init,
            .build_controls = revo_add_controls,
      },
      { } /* terminator */
};

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