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xonar_pcm179x.c

/*
 * card driver for models with PCM1796 DACs (Xonar D2/D2X/HDAV1.3/ST/STX)
 *
 * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
 *
 *
 *  This driver is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License, version 2.
 *
 *  This driver 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 driver; if not, see <http://www.gnu.org/licenses/>.
 */

/*
 * Xonar D2/D2X
 * ------------
 *
 * CMI8788:
 *
 * SPI 0 -> 1st PCM1796 (front)
 * SPI 1 -> 2nd PCM1796 (surround)
 * SPI 2 -> 3rd PCM1796 (center/LFE)
 * SPI 4 -> 4th PCM1796 (back)
 *
 * GPIO 2 -> M0 of CS5381
 * GPIO 3 -> M1 of CS5381
 * GPIO 5 <- external power present (D2X only)
 * GPIO 7 -> ALT
 * GPIO 8 -> enable output to speakers
 *
 * CM9780:
 *
 * GPO 0 -> route line-in (0) or AC97 output (1) to CS5381 input
 */

/*
 * Xonar HDAV1.3 (Deluxe)
 * ----------------------
 *
 * CMI8788:
 *
 * I²C <-> PCM1796 (front)
 *
 * GPI 0 <- external power present
 *
 * GPIO 0 -> enable output to speakers
 * GPIO 2 -> M0 of CS5381
 * GPIO 3 -> M1 of CS5381
 * GPIO 8 -> route input jack to line-in (0) or mic-in (1)
 *
 * TXD -> HDMI controller
 * RXD <- HDMI controller
 *
 * PCM1796 front: AD1,0 <- 0,0
 *
 * CM9780:
 *
 * GPO 0 -> route line-in (0) or AC97 output (1) to CS5381 input
 *
 * no daughterboard
 * ----------------
 *
 * GPIO 4 <- 1
 *
 * H6 daughterboard
 * ----------------
 *
 * GPIO 4 <- 0
 * GPIO 5 <- 0
 *
 * I²C <-> PCM1796 (surround)
 *     <-> PCM1796 (center/LFE)
 *     <-> PCM1796 (back)
 *
 * PCM1796 surround:   AD1,0 <- 0,1
 * PCM1796 center/LFE: AD1,0 <- 1,0
 * PCM1796 back:       AD1,0 <- 1,1
 *
 * unknown daughterboard
 * ---------------------
 *
 * GPIO 4 <- 0
 * GPIO 5 <- 1
 *
 * I²C <-> CS4362A (surround, center/LFE, back)
 *
 * CS4362A: AD0 <- 0
 */

/*
 * Xonar Essence ST (Deluxe)/STX
 * -----------------------------
 *
 * CMI8788:
 *
 * I²C <-> PCM1792A
 *     <-> CS2000 (ST only)
 *
 * ADC1 MCLK -> REF_CLK of CS2000 (ST only)
 *
 * GPI 0 <- external power present (STX only)
 *
 * GPIO 0 -> enable output to speakers
 * GPIO 1 -> route HP to front panel (0) or rear jack (1)
 * GPIO 2 -> M0 of CS5381
 * GPIO 3 -> M1 of CS5381
 * GPIO 7 -> route output to speaker jacks (0) or HP (1)
 * GPIO 8 -> route input jack to line-in (0) or mic-in (1)
 *
 * PCM1792A:
 *
 * AD1,0 <- 0,0
 * SCK <- CLK_OUT of CS2000 (ST only)
 *
 * CS2000:
 *
 * AD0 <- 0
 *
 * CM9780:
 *
 * GPO 0 -> route line-in (0) or AC97 output (1) to CS5381 input
 *
 * H6 daughterboard
 * ----------------
 *
 * GPIO 4 <- 0
 * GPIO 5 <- 0
 */

#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/mutex.h>
#include <sound/ac97_codec.h>
#include <sound/control.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/tlv.h>
#include "xonar.h"
#include "cm9780.h"
#include "pcm1796.h"
#include "cs2000.h"


#define GPIO_D2X_EXT_POWER    0x0020
#define GPIO_D2_ALT           0x0080
#define GPIO_D2_OUTPUT_ENABLE 0x0100

#define GPI_EXT_POWER         0x01
#define GPIO_INPUT_ROUTE      0x0100

#define GPIO_HDAV_OUTPUT_ENABLE     0x0001

#define GPIO_DB_MASK          0x0030
#define GPIO_DB_H6            0x0000

#define GPIO_ST_OUTPUT_ENABLE 0x0001
#define GPIO_ST_HP_REAR       0x0002
#define GPIO_ST_HP            0x0080

#define I2C_DEVICE_PCM1796(i) (0x98 + ((i) << 1))     /* 10011, ii, /W=0 */
#define I2C_DEVICE_CS2000     0x9c              /* 100111, 0, /W=0 */

#define PCM1796_REG_BASE      16


struct xonar_pcm179x {
      struct xonar_generic generic;
      unsigned int dacs;
      u8 pcm1796_regs[4][5];
      unsigned int current_rate;
      bool os_128;
      bool hp_active;
      s8 hp_gain_offset;
      bool has_cs2000;
      u8 cs2000_fun_cfg_1;
};

struct xonar_hdav {
      struct xonar_pcm179x pcm179x;
      struct xonar_hdmi hdmi;
};


static inline void pcm1796_write_spi(struct oxygen *chip, unsigned int codec,
                             u8 reg, u8 value)
{
      /* maps ALSA channel pair number to SPI output */
      static const u8 codec_map[4] = {
            0, 1, 2, 4
      };
      oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER  |
                   OXYGEN_SPI_DATA_LENGTH_2 |
                   OXYGEN_SPI_CLOCK_160 |
                   (codec_map[codec] << OXYGEN_SPI_CODEC_SHIFT) |
                   OXYGEN_SPI_CEN_LATCH_CLOCK_HI,
                   (reg << 8) | value);
}

static inline void pcm1796_write_i2c(struct oxygen *chip, unsigned int codec,
                             u8 reg, u8 value)
{
      oxygen_write_i2c(chip, I2C_DEVICE_PCM1796(codec), reg, value);
}

static void pcm1796_write(struct oxygen *chip, unsigned int codec,
                    u8 reg, u8 value)
{
      struct xonar_pcm179x *data = chip->model_data;

      if ((chip->model.function_flags & OXYGEN_FUNCTION_2WIRE_SPI_MASK) ==
          OXYGEN_FUNCTION_SPI)
            pcm1796_write_spi(chip, codec, reg, value);
      else
            pcm1796_write_i2c(chip, codec, reg, value);
      if ((unsigned int)(reg - PCM1796_REG_BASE)
          < ARRAY_SIZE(data->pcm1796_regs[codec]))
            data->pcm1796_regs[codec][reg - PCM1796_REG_BASE] = value;
}

static void pcm1796_write_cached(struct oxygen *chip, unsigned int codec,
                         u8 reg, u8 value)
{
      struct xonar_pcm179x *data = chip->model_data;

      if (value != data->pcm1796_regs[codec][reg - PCM1796_REG_BASE])
            pcm1796_write(chip, codec, reg, value);
}

static void cs2000_write(struct oxygen *chip, u8 reg, u8 value)
{
      struct xonar_pcm179x *data = chip->model_data;

      oxygen_write_i2c(chip, I2C_DEVICE_CS2000, reg, value);
      if (reg == CS2000_FUN_CFG_1)
            data->cs2000_fun_cfg_1 = value;
}

static void cs2000_write_cached(struct oxygen *chip, u8 reg, u8 value)
{
      struct xonar_pcm179x *data = chip->model_data;

      if (reg != CS2000_FUN_CFG_1 ||
          value != data->cs2000_fun_cfg_1)
            cs2000_write(chip, reg, value);
}

static void pcm1796_registers_init(struct oxygen *chip)
{
      struct xonar_pcm179x *data = chip->model_data;
      unsigned int i;
      s8 gain_offset;

      gain_offset = data->hp_active ? data->hp_gain_offset : 0;
      for (i = 0; i < data->dacs; ++i) {
            /* set ATLD before ATL/ATR */
            pcm1796_write(chip, i, 18,
                        data->pcm1796_regs[0][18 - PCM1796_REG_BASE]);
            pcm1796_write(chip, i, 16, chip->dac_volume[i * 2]
                        + gain_offset);
            pcm1796_write(chip, i, 17, chip->dac_volume[i * 2 + 1]
                        + gain_offset);
            pcm1796_write(chip, i, 19,
                        data->pcm1796_regs[0][19 - PCM1796_REG_BASE]);
            pcm1796_write(chip, i, 20,
                        data->pcm1796_regs[0][20 - PCM1796_REG_BASE]);
            pcm1796_write(chip, i, 21, 0);
      }
}

static void pcm1796_init(struct oxygen *chip)
{
      struct xonar_pcm179x *data = chip->model_data;

      data->pcm1796_regs[0][18 - PCM1796_REG_BASE] = PCM1796_MUTE |
            PCM1796_DMF_DISABLED | PCM1796_FMT_24_LJUST | PCM1796_ATLD;
      data->pcm1796_regs[0][19 - PCM1796_REG_BASE] =
            PCM1796_FLT_SHARP | PCM1796_ATS_1;
      data->pcm1796_regs[0][20 - PCM1796_REG_BASE] = PCM1796_OS_64;
      pcm1796_registers_init(chip);
      data->current_rate = 48000;
}

static void xonar_d2_init(struct oxygen *chip)
{
      struct xonar_pcm179x *data = chip->model_data;

      data->generic.anti_pop_delay = 300;
      data->generic.output_enable_bit = GPIO_D2_OUTPUT_ENABLE;
      data->dacs = 4;

      pcm1796_init(chip);

      oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, GPIO_D2_ALT);
      oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA, GPIO_D2_ALT);

      oxygen_ac97_set_bits(chip, 0, CM9780_JACK, CM9780_FMIC2MIC);

      xonar_init_cs53x1(chip);
      xonar_enable_output(chip);

      snd_component_add(chip->card, "PCM1796");
      snd_component_add(chip->card, "CS5381");
}

static void xonar_d2x_init(struct oxygen *chip)
{
      struct xonar_pcm179x *data = chip->model_data;

      data->generic.ext_power_reg = OXYGEN_GPIO_DATA;
      data->generic.ext_power_int_reg = OXYGEN_GPIO_INTERRUPT_MASK;
      data->generic.ext_power_bit = GPIO_D2X_EXT_POWER;
      oxygen_clear_bits16(chip, OXYGEN_GPIO_CONTROL, GPIO_D2X_EXT_POWER);
      xonar_init_ext_power(chip);
      xonar_d2_init(chip);
}

static void xonar_hdav_init(struct oxygen *chip)
{
      struct xonar_hdav *data = chip->model_data;

      oxygen_write16(chip, OXYGEN_2WIRE_BUS_STATUS,
                   OXYGEN_2WIRE_LENGTH_8 |
                   OXYGEN_2WIRE_INTERRUPT_MASK |
                   OXYGEN_2WIRE_SPEED_FAST);

      data->pcm179x.generic.anti_pop_delay = 100;
      data->pcm179x.generic.output_enable_bit = GPIO_HDAV_OUTPUT_ENABLE;
      data->pcm179x.generic.ext_power_reg = OXYGEN_GPI_DATA;
      data->pcm179x.generic.ext_power_int_reg = OXYGEN_GPI_INTERRUPT_MASK;
      data->pcm179x.generic.ext_power_bit = GPI_EXT_POWER;
      data->pcm179x.dacs = chip->model.private_data ? 4 : 1;

      pcm1796_init(chip);

      oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, GPIO_INPUT_ROUTE);
      oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA, GPIO_INPUT_ROUTE);

      xonar_init_cs53x1(chip);
      xonar_init_ext_power(chip);
      xonar_hdmi_init(chip, &data->hdmi);
      xonar_enable_output(chip);

      snd_component_add(chip->card, "PCM1796");
      snd_component_add(chip->card, "CS5381");
}

static void xonar_st_init_i2c(struct oxygen *chip)
{
      oxygen_write16(chip, OXYGEN_2WIRE_BUS_STATUS,
                   OXYGEN_2WIRE_LENGTH_8 |
                   OXYGEN_2WIRE_INTERRUPT_MASK |
                   OXYGEN_2WIRE_SPEED_FAST);
}

static void xonar_st_init_common(struct oxygen *chip)
{
      struct xonar_pcm179x *data = chip->model_data;

      data->generic.anti_pop_delay = 100;
      data->generic.output_enable_bit = GPIO_ST_OUTPUT_ENABLE;
      data->dacs = chip->model.private_data ? 4 : 1;
      data->hp_gain_offset = 2*-18;

      pcm1796_init(chip);

      oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL,
                    GPIO_INPUT_ROUTE | GPIO_ST_HP_REAR | GPIO_ST_HP);
      oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA,
                      GPIO_INPUT_ROUTE | GPIO_ST_HP_REAR | GPIO_ST_HP);

      xonar_init_cs53x1(chip);
      xonar_enable_output(chip);

      snd_component_add(chip->card, "PCM1792A");
      snd_component_add(chip->card, "CS5381");
}

static void cs2000_registers_init(struct oxygen *chip)
{
      struct xonar_pcm179x *data = chip->model_data;

      cs2000_write(chip, CS2000_GLOBAL_CFG, CS2000_FREEZE);
      cs2000_write(chip, CS2000_DEV_CTRL, 0);
      cs2000_write(chip, CS2000_DEV_CFG_1,
                 CS2000_R_MOD_SEL_1 |
                 (0 << CS2000_R_SEL_SHIFT) |
                 CS2000_AUX_OUT_SRC_REF_CLK |
                 CS2000_EN_DEV_CFG_1);
      cs2000_write(chip, CS2000_DEV_CFG_2,
                 (0 << CS2000_LOCK_CLK_SHIFT) |
                 CS2000_FRAC_N_SRC_STATIC);
      cs2000_write(chip, CS2000_RATIO_0 + 0, 0x00); /* 1.0 */
      cs2000_write(chip, CS2000_RATIO_0 + 1, 0x10);
      cs2000_write(chip, CS2000_RATIO_0 + 2, 0x00);
      cs2000_write(chip, CS2000_RATIO_0 + 3, 0x00);
      cs2000_write(chip, CS2000_FUN_CFG_1, data->cs2000_fun_cfg_1);
      cs2000_write(chip, CS2000_FUN_CFG_2, 0);
      cs2000_write(chip, CS2000_GLOBAL_CFG, CS2000_EN_DEV_CFG_2);
}

static void xonar_st_init(struct oxygen *chip)
{
      struct xonar_pcm179x *data = chip->model_data;

      data->has_cs2000 = 1;
      data->cs2000_fun_cfg_1 = CS2000_REF_CLK_DIV_1;

      oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
                   OXYGEN_RATE_48000 | OXYGEN_I2S_FORMAT_I2S |
                   OXYGEN_I2S_MCLK_128 | OXYGEN_I2S_BITS_16 |
                   OXYGEN_I2S_MASTER | OXYGEN_I2S_BCLK_64);

      xonar_st_init_i2c(chip);
      cs2000_registers_init(chip);
      xonar_st_init_common(chip);

      snd_component_add(chip->card, "CS2000");
}

static void xonar_stx_init(struct oxygen *chip)
{
      struct xonar_pcm179x *data = chip->model_data;

      xonar_st_init_i2c(chip);
      data->generic.ext_power_reg = OXYGEN_GPI_DATA;
      data->generic.ext_power_int_reg = OXYGEN_GPI_INTERRUPT_MASK;
      data->generic.ext_power_bit = GPI_EXT_POWER;
      xonar_init_ext_power(chip);
      xonar_st_init_common(chip);
}

static void xonar_d2_cleanup(struct oxygen *chip)
{
      xonar_disable_output(chip);
}

static void xonar_hdav_cleanup(struct oxygen *chip)
{
      xonar_hdmi_cleanup(chip);
      xonar_disable_output(chip);
      msleep(2);
}

static void xonar_st_cleanup(struct oxygen *chip)
{
      xonar_disable_output(chip);
}

static void xonar_d2_suspend(struct oxygen *chip)
{
      xonar_d2_cleanup(chip);
}

static void xonar_hdav_suspend(struct oxygen *chip)
{
      xonar_hdav_cleanup(chip);
}

static void xonar_st_suspend(struct oxygen *chip)
{
      xonar_st_cleanup(chip);
}

static void xonar_d2_resume(struct oxygen *chip)
{
      pcm1796_registers_init(chip);
      xonar_enable_output(chip);
}

static void xonar_hdav_resume(struct oxygen *chip)
{
      struct xonar_hdav *data = chip->model_data;

      pcm1796_registers_init(chip);
      xonar_hdmi_resume(chip, &data->hdmi);
      xonar_enable_output(chip);
}

static void xonar_stx_resume(struct oxygen *chip)
{
      pcm1796_registers_init(chip);
      xonar_enable_output(chip);
}

static void xonar_st_resume(struct oxygen *chip)
{
      cs2000_registers_init(chip);
      xonar_stx_resume(chip);
}

static unsigned int mclk_from_rate(struct oxygen *chip, unsigned int rate)
{
      struct xonar_pcm179x *data = chip->model_data;

      if (rate <= 32000)
            return OXYGEN_I2S_MCLK_512;
      else if (rate <= 48000 && data->os_128)
            return OXYGEN_I2S_MCLK_512;
      else if (rate <= 96000)
            return OXYGEN_I2S_MCLK_256;
      else
            return OXYGEN_I2S_MCLK_128;
}

static unsigned int get_pcm1796_i2s_mclk(struct oxygen *chip,
                               unsigned int channel,
                               struct snd_pcm_hw_params *params)
{
      if (channel == PCM_MULTICH)
            return mclk_from_rate(chip, params_rate(params));
      else
            return oxygen_default_i2s_mclk(chip, channel, params);
}

static void update_pcm1796_oversampling(struct oxygen *chip)
{
      struct xonar_pcm179x *data = chip->model_data;
      unsigned int i;
      u8 reg;

      if (data->current_rate <= 32000)
            reg = PCM1796_OS_128;
      else if (data->current_rate <= 48000 && data->os_128)
            reg = PCM1796_OS_128;
      else if (data->current_rate <= 96000 || data->os_128)
            reg = PCM1796_OS_64;
      else
            reg = PCM1796_OS_32;
      for (i = 0; i < data->dacs; ++i)
            pcm1796_write_cached(chip, i, 20, reg);
}

static void set_pcm1796_params(struct oxygen *chip,
                         struct snd_pcm_hw_params *params)
{
      struct xonar_pcm179x *data = chip->model_data;

      data->current_rate = params_rate(params);
      update_pcm1796_oversampling(chip);
}

static void update_pcm1796_volume(struct oxygen *chip)
{
      struct xonar_pcm179x *data = chip->model_data;
      unsigned int i;
      s8 gain_offset;

      gain_offset = data->hp_active ? data->hp_gain_offset : 0;
      for (i = 0; i < data->dacs; ++i) {
            pcm1796_write_cached(chip, i, 16, chip->dac_volume[i * 2]
                             + gain_offset);
            pcm1796_write_cached(chip, i, 17, chip->dac_volume[i * 2 + 1]
                             + gain_offset);
      }
}

static void update_pcm1796_mute(struct oxygen *chip)
{
      struct xonar_pcm179x *data = chip->model_data;
      unsigned int i;
      u8 value;

      value = PCM1796_DMF_DISABLED | PCM1796_FMT_24_LJUST | PCM1796_ATLD;
      if (chip->dac_mute)
            value |= PCM1796_MUTE;
      for (i = 0; i < data->dacs; ++i)
            pcm1796_write_cached(chip, i, 18, value);
}

static void update_cs2000_rate(struct oxygen *chip, unsigned int rate)
{
      struct xonar_pcm179x *data = chip->model_data;
      u8 rate_mclk, reg;

      switch (rate) {
            /* XXX Why is the I2S A MCLK half the actual I2S MCLK? */
      case 32000:
            rate_mclk = OXYGEN_RATE_32000 | OXYGEN_I2S_MCLK_256;
            break;
      case 44100:
            if (data->os_128)
                  rate_mclk = OXYGEN_RATE_44100 | OXYGEN_I2S_MCLK_256;
            else
                  rate_mclk = OXYGEN_RATE_44100 | OXYGEN_I2S_MCLK_128;
            break;
      default: /* 48000 */
            if (data->os_128)
                  rate_mclk = OXYGEN_RATE_48000 | OXYGEN_I2S_MCLK_256;
            else
                  rate_mclk = OXYGEN_RATE_48000 | OXYGEN_I2S_MCLK_128;
            break;
      case 64000:
            rate_mclk = OXYGEN_RATE_32000 | OXYGEN_I2S_MCLK_256;
            break;
      case 88200:
            rate_mclk = OXYGEN_RATE_44100 | OXYGEN_I2S_MCLK_256;
            break;
      case 96000:
            rate_mclk = OXYGEN_RATE_48000 | OXYGEN_I2S_MCLK_256;
            break;
      case 176400:
            rate_mclk = OXYGEN_RATE_44100 | OXYGEN_I2S_MCLK_256;
            break;
      case 192000:
            rate_mclk = OXYGEN_RATE_48000 | OXYGEN_I2S_MCLK_256;
            break;
      }
      oxygen_write16_masked(chip, OXYGEN_I2S_A_FORMAT, rate_mclk,
                        OXYGEN_I2S_RATE_MASK | OXYGEN_I2S_MCLK_MASK);
      if ((rate_mclk & OXYGEN_I2S_MCLK_MASK) <= OXYGEN_I2S_MCLK_128)
            reg = CS2000_REF_CLK_DIV_1;
      else
            reg = CS2000_REF_CLK_DIV_2;
      cs2000_write_cached(chip, CS2000_FUN_CFG_1, reg);
}

static void set_st_params(struct oxygen *chip,
                    struct snd_pcm_hw_params *params)
{
      update_cs2000_rate(chip, params_rate(params));
      set_pcm1796_params(chip, params);
}

static void set_hdav_params(struct oxygen *chip,
                      struct snd_pcm_hw_params *params)
{
      struct xonar_hdav *data = chip->model_data;

      set_pcm1796_params(chip, params);
      xonar_set_hdmi_params(chip, &data->hdmi, params);
}

static const struct snd_kcontrol_new alt_switch = {
      .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
      .name = "Analog Loopback Switch",
      .info = snd_ctl_boolean_mono_info,
      .get = xonar_gpio_bit_switch_get,
      .put = xonar_gpio_bit_switch_put,
      .private_value = GPIO_D2_ALT,
};

static int rolloff_info(struct snd_kcontrol *ctl,
                  struct snd_ctl_elem_info *info)
{
      static const char *const names[2] = {
            "Sharp Roll-off", "Slow Roll-off"
      };

      info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      info->count = 1;
      info->value.enumerated.items = 2;
      if (info->value.enumerated.item >= 2)
            info->value.enumerated.item = 1;
      strcpy(info->value.enumerated.name, names[info->value.enumerated.item]);
      return 0;
}

static int rolloff_get(struct snd_kcontrol *ctl,
                   struct snd_ctl_elem_value *value)
{
      struct oxygen *chip = ctl->private_data;
      struct xonar_pcm179x *data = chip->model_data;

      value->value.enumerated.item[0] =
            (data->pcm1796_regs[0][19 - PCM1796_REG_BASE] &
             PCM1796_FLT_MASK) != PCM1796_FLT_SHARP;
      return 0;
}

static int rolloff_put(struct snd_kcontrol *ctl,
                   struct snd_ctl_elem_value *value)
{
      struct oxygen *chip = ctl->private_data;
      struct xonar_pcm179x *data = chip->model_data;
      unsigned int i;
      int changed;
      u8 reg;

      mutex_lock(&chip->mutex);
      reg = data->pcm1796_regs[0][19 - PCM1796_REG_BASE];
      reg &= ~PCM1796_FLT_MASK;
      if (!value->value.enumerated.item[0])
            reg |= PCM1796_FLT_SHARP;
      else
            reg |= PCM1796_FLT_SLOW;
      changed = reg != data->pcm1796_regs[0][19 - PCM1796_REG_BASE];
      if (changed) {
            for (i = 0; i < data->dacs; ++i)
                  pcm1796_write(chip, i, 19, reg);
      }
      mutex_unlock(&chip->mutex);
      return changed;
}

static const struct snd_kcontrol_new rolloff_control = {
      .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
      .name = "DAC Filter Playback Enum",
      .info = rolloff_info,
      .get = rolloff_get,
      .put = rolloff_put,
};

static int os_128_info(struct snd_kcontrol *ctl, struct snd_ctl_elem_info *info)
{
      static const char *const names[2] = { "64x", "128x" };

      info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      info->count = 1;
      info->value.enumerated.items = 2;
      if (info->value.enumerated.item >= 2)
            info->value.enumerated.item = 1;
      strcpy(info->value.enumerated.name, names[info->value.enumerated.item]);
      return 0;
}

static int os_128_get(struct snd_kcontrol *ctl,
                  struct snd_ctl_elem_value *value)
{
      struct oxygen *chip = ctl->private_data;
      struct xonar_pcm179x *data = chip->model_data;

      value->value.enumerated.item[0] = data->os_128;
      return 0;
}

static int os_128_put(struct snd_kcontrol *ctl,
                  struct snd_ctl_elem_value *value)
{
      struct oxygen *chip = ctl->private_data;
      struct xonar_pcm179x *data = chip->model_data;
      int changed;

      mutex_lock(&chip->mutex);
      changed = value->value.enumerated.item[0] != data->os_128;
      if (changed) {
            data->os_128 = value->value.enumerated.item[0];
            if (data->has_cs2000)
                  update_cs2000_rate(chip, data->current_rate);
            oxygen_write16_masked(chip, OXYGEN_I2S_MULTICH_FORMAT,
                              mclk_from_rate(chip, data->current_rate),
                              OXYGEN_I2S_MCLK_MASK);
            update_pcm1796_oversampling(chip);
      }
      mutex_unlock(&chip->mutex);
      return changed;
}

static const struct snd_kcontrol_new os_128_control = {
      .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
      .name = "DAC Oversampling Playback Enum",
      .info = os_128_info,
      .get = os_128_get,
      .put = os_128_put,
};

static int st_output_switch_info(struct snd_kcontrol *ctl,
                         struct snd_ctl_elem_info *info)
{
      static const char *const names[3] = {
            "Speakers", "Headphones", "FP Headphones"
      };

      info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      info->count = 1;
      info->value.enumerated.items = 3;
      if (info->value.enumerated.item >= 3)
            info->value.enumerated.item = 2;
      strcpy(info->value.enumerated.name, names[info->value.enumerated.item]);
      return 0;
}

static int st_output_switch_get(struct snd_kcontrol *ctl,
                        struct snd_ctl_elem_value *value)
{
      struct oxygen *chip = ctl->private_data;
      u16 gpio;

      gpio = oxygen_read16(chip, OXYGEN_GPIO_DATA);
      if (!(gpio & GPIO_ST_HP))
            value->value.enumerated.item[0] = 0;
      else if (gpio & GPIO_ST_HP_REAR)
            value->value.enumerated.item[0] = 1;
      else
            value->value.enumerated.item[0] = 2;
      return 0;
}


static int st_output_switch_put(struct snd_kcontrol *ctl,
                        struct snd_ctl_elem_value *value)
{
      struct oxygen *chip = ctl->private_data;
      struct xonar_pcm179x *data = chip->model_data;
      u16 gpio_old, gpio;

      mutex_lock(&chip->mutex);
      gpio_old = oxygen_read16(chip, OXYGEN_GPIO_DATA);
      gpio = gpio_old;
      switch (value->value.enumerated.item[0]) {
      case 0:
            gpio &= ~(GPIO_ST_HP | GPIO_ST_HP_REAR);
            break;
      case 1:
            gpio |= GPIO_ST_HP | GPIO_ST_HP_REAR;
            break;
      case 2:
            gpio = (gpio | GPIO_ST_HP) & ~GPIO_ST_HP_REAR;
            break;
      }
      oxygen_write16(chip, OXYGEN_GPIO_DATA, gpio);
      data->hp_active = gpio & GPIO_ST_HP;
      update_pcm1796_volume(chip);
      mutex_unlock(&chip->mutex);
      return gpio != gpio_old;
}

static int st_hp_volume_offset_info(struct snd_kcontrol *ctl,
                            struct snd_ctl_elem_info *info)
{
      static const char *const names[3] = {
            "< 64 ohms", "64-300 ohms", "300-600 ohms"
      };

      info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      info->count = 1;
      info->value.enumerated.items = 3;
      if (info->value.enumerated.item > 2)
            info->value.enumerated.item = 2;
      strcpy(info->value.enumerated.name, names[info->value.enumerated.item]);
      return 0;
}

static int st_hp_volume_offset_get(struct snd_kcontrol *ctl,
                           struct snd_ctl_elem_value *value)
{
      struct oxygen *chip = ctl->private_data;
      struct xonar_pcm179x *data = chip->model_data;

      mutex_lock(&chip->mutex);
      if (data->hp_gain_offset < 2*-6)
            value->value.enumerated.item[0] = 0;
      else if (data->hp_gain_offset < 0)
            value->value.enumerated.item[0] = 1;
      else
            value->value.enumerated.item[0] = 2;
      mutex_unlock(&chip->mutex);
      return 0;
}


static int st_hp_volume_offset_put(struct snd_kcontrol *ctl,
                           struct snd_ctl_elem_value *value)
{
      static const s8 offsets[] = { 2*-18, 2*-6, 0 };
      struct oxygen *chip = ctl->private_data;
      struct xonar_pcm179x *data = chip->model_data;
      s8 offset;
      int changed;

      if (value->value.enumerated.item[0] > 2)
            return -EINVAL;
      offset = offsets[value->value.enumerated.item[0]];
      mutex_lock(&chip->mutex);
      changed = offset != data->hp_gain_offset;
      if (changed) {
            data->hp_gain_offset = offset;
            update_pcm1796_volume(chip);
      }
      mutex_unlock(&chip->mutex);
      return changed;
}

static const struct snd_kcontrol_new st_controls[] = {
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Analog Output",
            .info = st_output_switch_info,
            .get = st_output_switch_get,
            .put = st_output_switch_put,
      },
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Headphones Impedance Playback Enum",
            .info = st_hp_volume_offset_info,
            .get = st_hp_volume_offset_get,
            .put = st_hp_volume_offset_put,
      },
};

static void xonar_line_mic_ac97_switch(struct oxygen *chip,
                               unsigned int reg, unsigned int mute)
{
      if (reg == AC97_LINE) {
            spin_lock_irq(&chip->reg_lock);
            oxygen_write16_masked(chip, OXYGEN_GPIO_DATA,
                              mute ? GPIO_INPUT_ROUTE : 0,
                              GPIO_INPUT_ROUTE);
            spin_unlock_irq(&chip->reg_lock);
      }
}

static const DECLARE_TLV_DB_SCALE(pcm1796_db_scale, -6000, 50, 0);

static int xonar_d2_control_filter(struct snd_kcontrol_new *template)
{
      if (!strncmp(template->name, "CD Capture ", 11))
            /* CD in is actually connected to the video in pin */
            template->private_value ^= AC97_CD ^ AC97_VIDEO;
      return 0;
}

static int xonar_st_control_filter(struct snd_kcontrol_new *template)
{
      if (!strncmp(template->name, "CD Capture ", 11))
            return 1; /* no CD input */
      return 0;
}

static int add_pcm1796_controls(struct oxygen *chip)
{
      int err;

      err = snd_ctl_add(chip->card, snd_ctl_new1(&rolloff_control, chip));
      if (err < 0)
            return err;
      err = snd_ctl_add(chip->card, snd_ctl_new1(&os_128_control, chip));
      if (err < 0)
            return err;
      return 0;
}

static int xonar_d2_mixer_init(struct oxygen *chip)
{
      int err;

      err = snd_ctl_add(chip->card, snd_ctl_new1(&alt_switch, chip));
      if (err < 0)
            return err;
      err = add_pcm1796_controls(chip);
      if (err < 0)
            return err;
      return 0;
}

static int xonar_hdav_mixer_init(struct oxygen *chip)
{
      return add_pcm1796_controls(chip);
}

static int xonar_st_mixer_init(struct oxygen *chip)
{
      unsigned int i;
      int err;

      for (i = 0; i < ARRAY_SIZE(st_controls); ++i) {
            err = snd_ctl_add(chip->card,
                          snd_ctl_new1(&st_controls[i], chip));
            if (err < 0)
                  return err;
      }
      err = add_pcm1796_controls(chip);
      if (err < 0)
            return err;
      return 0;
}

static const struct oxygen_model model_xonar_d2 = {
      .longname = "Asus Virtuoso 200",
      .chip = "AV200",
      .init = xonar_d2_init,
      .control_filter = xonar_d2_control_filter,
      .mixer_init = xonar_d2_mixer_init,
      .cleanup = xonar_d2_cleanup,
      .suspend = xonar_d2_suspend,
      .resume = xonar_d2_resume,
      .get_i2s_mclk = get_pcm1796_i2s_mclk,
      .set_dac_params = set_pcm1796_params,
      .set_adc_params = xonar_set_cs53x1_params,
      .update_dac_volume = update_pcm1796_volume,
      .update_dac_mute = update_pcm1796_mute,
      .dac_tlv = pcm1796_db_scale,
      .model_data_size = sizeof(struct xonar_pcm179x),
      .device_config = PLAYBACK_0_TO_I2S |
                   PLAYBACK_1_TO_SPDIF |
                   CAPTURE_0_FROM_I2S_2 |
                   CAPTURE_1_FROM_SPDIF |
                   MIDI_OUTPUT |
                   MIDI_INPUT,
      .dac_channels = 8,
      .dac_volume_min = 255 - 2*60,
      .dac_volume_max = 255,
      .misc_flags = OXYGEN_MISC_MIDI,
      .function_flags = OXYGEN_FUNCTION_SPI |
                    OXYGEN_FUNCTION_ENABLE_SPI_4_5,
      .dac_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
      .adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
};

static const struct oxygen_model model_xonar_hdav = {
      .longname = "Asus Virtuoso 200",
      .chip = "AV200",
      .init = xonar_hdav_init,
      .mixer_init = xonar_hdav_mixer_init,
      .cleanup = xonar_hdav_cleanup,
      .suspend = xonar_hdav_suspend,
      .resume = xonar_hdav_resume,
      .pcm_hardware_filter = xonar_hdmi_pcm_hardware_filter,
      .get_i2s_mclk = get_pcm1796_i2s_mclk,
      .set_dac_params = set_hdav_params,
      .set_adc_params = xonar_set_cs53x1_params,
      .update_dac_volume = update_pcm1796_volume,
      .update_dac_mute = update_pcm1796_mute,
      .uart_input = xonar_hdmi_uart_input,
      .ac97_switch = xonar_line_mic_ac97_switch,
      .dac_tlv = pcm1796_db_scale,
      .model_data_size = sizeof(struct xonar_hdav),
      .device_config = PLAYBACK_0_TO_I2S |
                   PLAYBACK_1_TO_SPDIF |
                   CAPTURE_0_FROM_I2S_2 |
                   CAPTURE_1_FROM_SPDIF,
      .dac_channels = 8,
      .dac_volume_min = 255 - 2*60,
      .dac_volume_max = 255,
      .misc_flags = OXYGEN_MISC_MIDI,
      .function_flags = OXYGEN_FUNCTION_2WIRE,
      .dac_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
      .adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
};

static const struct oxygen_model model_xonar_st = {
      .longname = "Asus Virtuoso 100",
      .chip = "AV200",
      .init = xonar_st_init,
      .control_filter = xonar_st_control_filter,
      .mixer_init = xonar_st_mixer_init,
      .cleanup = xonar_st_cleanup,
      .suspend = xonar_st_suspend,
      .resume = xonar_st_resume,
      .get_i2s_mclk = get_pcm1796_i2s_mclk,
      .set_dac_params = set_st_params,
      .set_adc_params = xonar_set_cs53x1_params,
      .update_dac_volume = update_pcm1796_volume,
      .update_dac_mute = update_pcm1796_mute,
      .ac97_switch = xonar_line_mic_ac97_switch,
      .dac_tlv = pcm1796_db_scale,
      .model_data_size = sizeof(struct xonar_pcm179x),
      .device_config = PLAYBACK_0_TO_I2S |
                   PLAYBACK_1_TO_SPDIF |
                   CAPTURE_0_FROM_I2S_2,
      .dac_channels = 2,
      .dac_volume_min = 255 - 2*60,
      .dac_volume_max = 255,
      .function_flags = OXYGEN_FUNCTION_2WIRE,
      .dac_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
      .adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
};

int __devinit get_xonar_pcm179x_model(struct oxygen *chip,
                              const struct pci_device_id *id)
{
      switch (id->subdevice) {
      case 0x8269:
            chip->model = model_xonar_d2;
            chip->model.shortname = "Xonar D2";
            break;
      case 0x82b7:
            chip->model = model_xonar_d2;
            chip->model.shortname = "Xonar D2X";
            chip->model.init = xonar_d2x_init;
            break;
      case 0x8314:
            chip->model = model_xonar_hdav;
            oxygen_clear_bits16(chip, OXYGEN_GPIO_CONTROL, GPIO_DB_MASK);
            switch (oxygen_read16(chip, OXYGEN_GPIO_DATA) & GPIO_DB_MASK) {
            default:
                  chip->model.shortname = "Xonar HDAV1.3";
                  break;
            case GPIO_DB_H6:
                  chip->model.shortname = "Xonar HDAV1.3+H6";
                  chip->model.private_data = 1;
                  break;
            }
            break;
      case 0x835d:
            chip->model = model_xonar_st;
            oxygen_clear_bits16(chip, OXYGEN_GPIO_CONTROL, GPIO_DB_MASK);
            switch (oxygen_read16(chip, OXYGEN_GPIO_DATA) & GPIO_DB_MASK) {
            default:
                  chip->model.shortname = "Xonar ST";
                  break;
            case GPIO_DB_H6:
                  chip->model.shortname = "Xonar ST+H6";
                  chip->model.dac_channels = 8;
                  chip->model.private_data = 1;
                  break;
            }
            break;
      case 0x835c:
            chip->model = model_xonar_st;
            chip->model.shortname = "Xonar STX";
            chip->model.init = xonar_stx_init;
            chip->model.resume = xonar_stx_resume;
            chip->model.set_dac_params = set_pcm1796_params;
            break;
      default:
            return -EINVAL;
      }
      return 0;
}

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