xonar_pcm179x.c

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/*
 * card driver for models with PCM1796 DACs (Xonar D2/D2X/HDAV1.3/ST/STX)
 *
 * Copyright (c) Clemens Ladisch <[email protected]>
 *
 *
 *  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:
 *
 *   LINE_OUT -> input of ADC
 *
 *   AUX_IN   <- aux
 *   VIDEO_IN <- CD
 *   FMIC_IN  <- mic
 *
 *   GPO 0 -> route line-in (0) or AC97 output (1) to CS5381 input
 */

/*
 * Xonar HDAV1.3 (Deluxe)
 * ----------------------
 *
 * CMI8788:
 *
 *   I²C <-> PCM1796 (addr 1001100) (front)
 *
 *   GPI 0 <- external power present
 *
 *   GPIO 0 -> enable HDMI (0) or speaker (1) output
 *   GPIO 2 -> M0 of CS5381
 *   GPIO 3 -> M1 of CS5381
 *   GPIO 4 <- daughterboard detection
 *   GPIO 5 <- daughterboard detection
 *   GPIO 6 -> ?
 *   GPIO 7 -> ?
 *   GPIO 8 -> route input jack to line-in (0) or mic-in (1)
 *
 *   UART <-> HDMI controller
 *
 * CM9780:
 *
 *   LINE_OUT -> input of ADC
 *
 *   AUX_IN <- aux
 *   CD_IN  <- CD
 *   MIC_IN <- mic
 *
 *   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 (addr 1001101) (surround)
 *       <-> PCM1796 (addr 1001110) (center/LFE)
 *       <-> PCM1796 (addr 1001111) (back)
 *
 * unknown daughterboard
 * ---------------------
 *
 *   GPIO 4 <- 0
 *   GPIO 5 <- 1
 *
 *   I²C <-> CS4362A (addr 0011000) (surround, center/LFE, back)
 */

/*
 * Xonar Essence ST (Deluxe)/STX
 * -----------------------------
 *
 * CMI8788:
 *
 *   I²C <-> PCM1792A (addr 1001100)
 *       <-> CS2000 (addr 1001110) (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 4 <- daughterboard detection
 *   GPIO 5 <- daughterboard detection
 *   GPIO 6 -> ?
 *   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:
 *
 *   SCK <- CLK_OUT of CS2000 (ST only)
 *
 * CM9780:
 *
 *   LINE_OUT -> input of ADC
 *
 *   AUX_IN <- aux
 *   MIC_IN <- mic
 *
 *   GPO 0 -> route line-in (0) or AC97 output (1) to CS5381 input
 *
 * H6 daughterboard
 * ----------------
 *
 * GPIO 4 <- 0
 * GPIO 5 <- 0
 */

/*
 * Xonar Xense
 * -----------
 *
 * CMI8788:
 *
 *   I²C <-> PCM1796 (addr 1001100) (front)
 *       <-> CS4362A (addr 0011000) (surround, center/LFE, back)
 *       <-> CS2000 (addr 1001110)
 *
 *   ADC1 MCLK -> REF_CLK of CS2000
 *
 *   GPI 0 <- external power present
 *
 *   GPIO 0 -> enable output
 *   GPIO 1 -> route HP to front panel (0) or rear jack (1)
 *   GPIO 2 -> M0 of CS5381
 *   GPIO 3 -> M1 of CS5381
 *   GPIO 4 -> enable output
 *   GPIO 5 -> enable output
 *   GPIO 6 -> ?
 *   GPIO 7 -> route output to HP (0) or speaker (1)
 *   GPIO 8 -> route input jack to mic-in (0) or line-in (1)
 *
 * CM9780:
 *
 *   LINE_OUT -> input of ADC
 *
 *   AUX_IN   <- aux
 *   VIDEO_IN <- ?
 *   FMIC_IN  <- mic
 *
 *   GPO 0 -> route line-in (0) or AC97 output (1) to CS5381 input
 *   GPO 1 -> route mic-in from input jack (0) or front panel header (1)
 */

#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/info.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_HDAV_MAGIC     0x00c0

#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_MAGIC       0x0040
#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 h6;
    bool hp_active;
    s8 hp_gain_offset;
    bool has_cs2000;
    u8 cs2000_regs[0x1f];
    bool broken_i2c;
};

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);
    data->cs2000_regs[reg] = value;
}

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

    if (value != data->cs2000_regs[reg])
        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;

    msleep(1);
    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);
        gain_offset = 0;
    }
}

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

    data->pcm1796_regs[0][18 - PCM1796_REG_BASE] =
        PCM1796_DMF_DISABLED | PCM1796_FMT_24_I2S | PCM1796_ATLD;
    if (!data->broken_i2c)
        data->pcm1796_regs[0][18 - PCM1796_REG_BASE] |= PCM1796_MUTE;
    data->pcm1796_regs[0][19 - PCM1796_REG_BASE] =
        PCM1796_FLT_SHARP | PCM1796_ATS_1;
    data->pcm1796_regs[0][20 - PCM1796_REG_BASE] =
        data->h6 ? PCM1796_OS_64 : PCM1796_OS_128;
    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_STANDARD);

    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.dac_channels_mixer / 2;
    data->pcm179x.h6 = chip->model.dac_channels_mixer > 2;

    pcm1796_init(chip);

    oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL,
              GPIO_HDAV_MAGIC | 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_STANDARD);
}

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

    data->generic.output_enable_bit = GPIO_ST_OUTPUT_ENABLE;
    data->dacs = chip->model.dac_channels_mixer / 2;
    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_MAGIC | 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_regs[CS2000_FUN_CFG_1]);
    cs2000_write(chip, CS2000_FUN_CFG_2, 0);
    cs2000_write(chip, CS2000_GLOBAL_CFG, CS2000_EN_DEV_CFG_2);
    msleep(3); /* PLL lock delay */
}

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

    data->generic.anti_pop_delay = 100;
    data->h6 = chip->model.dac_channels_mixer > 2;
    data->has_cs2000 = 1;
    data->cs2000_regs[CS2000_FUN_CFG_1] = CS2000_REF_CLK_DIV_1;
    data->broken_i2c = true;

    oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
               OXYGEN_RATE_48000 |
               OXYGEN_I2S_FORMAT_I2S |
               OXYGEN_I2S_MCLK(data->h6 ? MCLK_256 : MCLK_512) |
               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.anti_pop_delay = 800;
    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 void update_pcm1796_oversampling(struct oxygen *chip)
{
    struct xonar_pcm179x *data = chip->model_data;
    unsigned int i;
    u8 reg;

    if (data->current_rate <= 48000 && !data->h6)
        reg = PCM1796_OS_128;
    else
        reg = PCM1796_OS_64;
    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;

    msleep(1);
    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);
        gain_offset = 0;
    }
}

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_I2S | 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) {
    case 32000:
    case 64000:
        rate_mclk = OXYGEN_RATE_32000;
        break;
    case 44100:
    case 88200:
    case 176400:
        rate_mclk = OXYGEN_RATE_44100;
        break;
    default:
    case 48000:
    case 96000:
    case 192000:
        rate_mclk = OXYGEN_RATE_48000;
        break;
    }

    if (rate <= 96000 && (rate > 48000 || data->h6)) {
        rate_mclk |= OXYGEN_I2S_MCLK(MCLK_256);
        reg = CS2000_REF_CLK_DIV_1;
    } else {
        rate_mclk |= OXYGEN_I2S_MCLK(MCLK_512);
        reg = CS2000_REF_CLK_DIV_2;
    }

    oxygen_write16_masked(chip, OXYGEN_I2S_A_FORMAT, rate_mclk,
                  OXYGEN_I2S_RATE_MASK | OXYGEN_I2S_MCLK_MASK);
    cs2000_write_cached(chip, CS2000_FUN_CFG_1, reg);
    msleep(3); /* PLL lock delay */
}

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"
    };

    return snd_ctl_enum_info(info, 1, 2, names);
}

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 const struct snd_kcontrol_new hdav_hdmi_control = {
    .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
    .name = "HDMI Playback Switch",
    .info = snd_ctl_boolean_mono_info,
    .get = xonar_gpio_bit_switch_get,
    .put = xonar_gpio_bit_switch_put,
    .private_value = GPIO_HDAV_OUTPUT_ENABLE | XONAR_GPIO_BIT_INVERT,
};

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"
    };

    return snd_ctl_enum_info(info, 1, 3, names);
}

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"
    };

    return snd_ctl_enum_info(info, 1, 3, names);
}

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_h6_control_filter(struct snd_kcontrol_new *template)
{
    if (!strncmp(template->name, "Master Playback ", 16))
        /* no volume/mute, as I²C to the third DAC does not work */
        return 1;
    return 0;
}

static int add_pcm1796_controls(struct oxygen *chip)
{
    struct xonar_pcm179x *data = chip->model_data;
    int err;

    if (!data->broken_i2c) {
        err = snd_ctl_add(chip->card,
                  snd_ctl_new1(&rolloff_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)
{
    int err;

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

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 void dump_pcm1796_registers(struct oxygen *chip,
                   struct snd_info_buffer *buffer)
{
    struct xonar_pcm179x *data = chip->model_data;
    unsigned int dac, i;

    for (dac = 0; dac < data->dacs; ++dac) {
        snd_iprintf(buffer, "\nPCM1796 %u:", dac + 1);
        for (i = 0; i < 5; ++i)
            snd_iprintf(buffer, " %02x",
                    data->pcm1796_regs[dac][i]);
    }
    snd_iprintf(buffer, "\n");
}

static void dump_cs2000_registers(struct oxygen *chip,
                  struct snd_info_buffer *buffer)
{
    struct xonar_pcm179x *data = chip->model_data;
    unsigned int i;

    if (data->has_cs2000) {
        snd_iprintf(buffer, "\nCS2000:\n00:   ");
        for (i = 1; i < 0x10; ++i)
            snd_iprintf(buffer, " %02x", data->cs2000_regs[i]);
        snd_iprintf(buffer, "\n10:");
        for (i = 0x10; i < 0x1f; ++i)
            snd_iprintf(buffer, " %02x", data->cs2000_regs[i]);
        snd_iprintf(buffer, "\n");
    }
}

static void dump_st_registers(struct oxygen *chip,
                  struct snd_info_buffer *buffer)
{
    dump_pcm1796_registers(chip, buffer);
    dump_cs2000_registers(chip, buffer);
}

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,
    .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,
    .dump_registers = dump_pcm1796_registers,
    .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 |
             AC97_CD_INPUT,
    .dac_channels_pcm = 8,
    .dac_channels_mixer = 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_mclks = OXYGEN_MCLKS(512, 128, 128),
    .adc_mclks = OXYGEN_MCLKS(256, 128, 128),
    .dac_i2s_format = OXYGEN_I2S_FORMAT_I2S,
    .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,
    .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,
    .dump_registers = dump_pcm1796_registers,
    .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_pcm = 8,
    .dac_channels_mixer = 2,
    .dac_volume_min = 255 - 2*60,
    .dac_volume_max = 255,
    .misc_flags = OXYGEN_MISC_MIDI,
    .function_flags = OXYGEN_FUNCTION_2WIRE,
    .dac_mclks = OXYGEN_MCLKS(512, 128, 128),
    .adc_mclks = OXYGEN_MCLKS(256, 128, 128),
    .dac_i2s_format = OXYGEN_I2S_FORMAT_I2S,
    .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,
    .mixer_init = xonar_st_mixer_init,
    .cleanup = xonar_st_cleanup,
    .suspend = xonar_st_suspend,
    .resume = xonar_st_resume,
    .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,
    .dump_registers = dump_st_registers,
    .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 |
             AC97_FMIC_SWITCH,
    .dac_channels_pcm = 2,
    .dac_channels_mixer = 2,
    .dac_volume_min = 255 - 2*60,
    .dac_volume_max = 255,
    .function_flags = OXYGEN_FUNCTION_2WIRE,
    .dac_mclks = OXYGEN_MCLKS(512, 128, 128),
    .adc_mclks = OXYGEN_MCLKS(256, 128, 128),
    .dac_i2s_format = OXYGEN_I2S_FORMAT_I2S,
    .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.dac_channels_mixer = 8;
            chip->model.dac_mclks = OXYGEN_MCLKS(256, 128, 128);
            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.control_filter = xonar_st_h6_control_filter;
            chip->model.dac_channels_pcm = 8;
            chip->model.dac_channels_mixer = 8;
            chip->model.dac_volume_min = 255;
            chip->model.dac_mclks = OXYGEN_MCLKS(256, 128, 128);
            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;
}