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xonar_dg.c

/*
 * card driver for the Xonar DG
 *
 * 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 DG
 * --------
 *
 * CMI8788:
 *
 *   SPI 0 -> CS4245
 *
 *   GPIO 3 <- ?
 *   GPIO 4 <- headphone detect
 *   GPIO 5 -> route input jack to line-in (0) or mic-in (1)
 *   GPIO 6 -> route input jack to line-in (0) or mic-in (1)
 *   GPIO 7 -> enable rear headphone amp
 *   GPIO 8 -> enable output to speakers
 *
 * CS4245:
 *
 *   input 1 <- aux
 *   input 2 <- front mic
 *   input 4 <- line/mic
 *   aux out -> front panel headphones
 */

#include <linux/pci.h>
#include <linux/delay.h>
#include <sound/control.h>
#include <sound/core.h>
#include <sound/info.h>
#include <sound/pcm.h>
#include <sound/tlv.h>
#include "oxygen.h"
#include "xonar_dg.h"
#include "cs4245.h"

#define GPIO_MAGIC            0x0008
#define GPIO_HP_DETECT        0x0010
#define GPIO_INPUT_ROUTE      0x0060
#define GPIO_HP_REAR          0x0080
#define GPIO_OUTPUT_ENABLE    0x0100

00059 struct dg {
      unsigned int output_sel;
      s8 input_vol[4][2];
      unsigned int input_sel;
      u8 hp_vol_att;
      u8 cs4245_regs[0x11];
};

static void cs4245_write(struct oxygen *chip, unsigned int reg, u8 value)
{
      struct dg *data = chip->model_data;

      oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER |
                   OXYGEN_SPI_DATA_LENGTH_3 |
                   OXYGEN_SPI_CLOCK_1280 |
                   (0 << OXYGEN_SPI_CODEC_SHIFT) |
                   OXYGEN_SPI_CEN_LATCH_CLOCK_HI,
                   CS4245_SPI_ADDRESS |
                   CS4245_SPI_WRITE |
                   (reg << 8) | value);
      data->cs4245_regs[reg] = value;
}

static void cs4245_write_cached(struct oxygen *chip, unsigned int reg, u8 value)
{
      struct dg *data = chip->model_data;

      if (value != data->cs4245_regs[reg])
            cs4245_write(chip, reg, value);
}

static void cs4245_registers_init(struct oxygen *chip)
{
      struct dg *data = chip->model_data;

      cs4245_write(chip, CS4245_POWER_CTRL, CS4245_PDN);
      cs4245_write(chip, CS4245_DAC_CTRL_1,
                 data->cs4245_regs[CS4245_DAC_CTRL_1]);
      cs4245_write(chip, CS4245_ADC_CTRL,
                 data->cs4245_regs[CS4245_ADC_CTRL]);
      cs4245_write(chip, CS4245_SIGNAL_SEL,
                 data->cs4245_regs[CS4245_SIGNAL_SEL]);
      cs4245_write(chip, CS4245_PGA_B_CTRL,
                 data->cs4245_regs[CS4245_PGA_B_CTRL]);
      cs4245_write(chip, CS4245_PGA_A_CTRL,
                 data->cs4245_regs[CS4245_PGA_A_CTRL]);
      cs4245_write(chip, CS4245_ANALOG_IN,
                 data->cs4245_regs[CS4245_ANALOG_IN]);
      cs4245_write(chip, CS4245_DAC_A_CTRL,
                 data->cs4245_regs[CS4245_DAC_A_CTRL]);
      cs4245_write(chip, CS4245_DAC_B_CTRL,
                 data->cs4245_regs[CS4245_DAC_B_CTRL]);
      cs4245_write(chip, CS4245_DAC_CTRL_2,
                 CS4245_DAC_SOFT | CS4245_DAC_ZERO | CS4245_INVERT_DAC);
      cs4245_write(chip, CS4245_INT_MASK, 0);
      cs4245_write(chip, CS4245_POWER_CTRL, 0);
}

static void cs4245_init(struct oxygen *chip)
{
      struct dg *data = chip->model_data;

      data->cs4245_regs[CS4245_DAC_CTRL_1] =
            CS4245_DAC_FM_SINGLE | CS4245_DAC_DIF_LJUST;
      data->cs4245_regs[CS4245_ADC_CTRL] =
            CS4245_ADC_FM_SINGLE | CS4245_ADC_DIF_LJUST;
      data->cs4245_regs[CS4245_SIGNAL_SEL] =
            CS4245_A_OUT_SEL_HIZ | CS4245_ASYNCH;
      data->cs4245_regs[CS4245_PGA_B_CTRL] = 0;
      data->cs4245_regs[CS4245_PGA_A_CTRL] = 0;
      data->cs4245_regs[CS4245_ANALOG_IN] =
            CS4245_PGA_SOFT | CS4245_PGA_ZERO | CS4245_SEL_INPUT_4;
      data->cs4245_regs[CS4245_DAC_A_CTRL] = 0;
      data->cs4245_regs[CS4245_DAC_B_CTRL] = 0;
      cs4245_registers_init(chip);
      snd_component_add(chip->card, "CS4245");
}

static void dg_output_enable(struct oxygen *chip)
{
      msleep(2500);
      oxygen_set_bits16(chip, OXYGEN_GPIO_DATA, GPIO_OUTPUT_ENABLE);
}

static void dg_init(struct oxygen *chip)
{
      struct dg *data = chip->model_data;

      data->output_sel = 0;
      data->input_sel = 3;
      data->hp_vol_att = 2 * 16;

      cs4245_init(chip);

      oxygen_clear_bits16(chip, OXYGEN_GPIO_CONTROL,
                      GPIO_MAGIC | GPIO_HP_DETECT);
      oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL,
                    GPIO_INPUT_ROUTE | GPIO_HP_REAR | GPIO_OUTPUT_ENABLE);
      oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA,
                      GPIO_INPUT_ROUTE | GPIO_HP_REAR);
      dg_output_enable(chip);
}

static void dg_cleanup(struct oxygen *chip)
{
      oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA, GPIO_OUTPUT_ENABLE);
}

static void dg_suspend(struct oxygen *chip)
{
      dg_cleanup(chip);
}

static void dg_resume(struct oxygen *chip)
{
      cs4245_registers_init(chip);
      dg_output_enable(chip);
}

static void set_cs4245_dac_params(struct oxygen *chip,
                          struct snd_pcm_hw_params *params)
{
      struct dg *data = chip->model_data;
      u8 value;

      value = data->cs4245_regs[CS4245_DAC_CTRL_1] & ~CS4245_DAC_FM_MASK;
      if (params_rate(params) <= 50000)
            value |= CS4245_DAC_FM_SINGLE;
      else if (params_rate(params) <= 100000)
            value |= CS4245_DAC_FM_DOUBLE;
      else
            value |= CS4245_DAC_FM_QUAD;
      cs4245_write_cached(chip, CS4245_DAC_CTRL_1, value);
}

static void set_cs4245_adc_params(struct oxygen *chip,
                          struct snd_pcm_hw_params *params)
{
      struct dg *data = chip->model_data;
      u8 value;

      value = data->cs4245_regs[CS4245_ADC_CTRL] & ~CS4245_ADC_FM_MASK;
      if (params_rate(params) <= 50000)
            value |= CS4245_ADC_FM_SINGLE;
      else if (params_rate(params) <= 100000)
            value |= CS4245_ADC_FM_DOUBLE;
      else
            value |= CS4245_ADC_FM_QUAD;
      cs4245_write_cached(chip, CS4245_ADC_CTRL, value);
}

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

      mutex_lock(&chip->mutex);
      value->value.enumerated.item[0] = data->output_sel;
      mutex_unlock(&chip->mutex);
      return 0;
}

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

      if (value->value.enumerated.item[0] > 2)
            return -EINVAL;

      mutex_lock(&chip->mutex);
      changed = value->value.enumerated.item[0] != data->output_sel;
      if (changed) {
            data->output_sel = value->value.enumerated.item[0];

            reg = data->cs4245_regs[CS4245_SIGNAL_SEL] &
                                    ~CS4245_A_OUT_SEL_MASK;
            reg |= data->output_sel == 2 ?
                        CS4245_A_OUT_SEL_DAC : CS4245_A_OUT_SEL_HIZ;
            cs4245_write_cached(chip, CS4245_SIGNAL_SEL, reg);

            cs4245_write_cached(chip, CS4245_DAC_A_CTRL,
                            data->output_sel ? data->hp_vol_att : 0);
            cs4245_write_cached(chip, CS4245_DAC_B_CTRL,
                            data->output_sel ? data->hp_vol_att : 0);

            oxygen_write16_masked(chip, OXYGEN_GPIO_DATA,
                              data->output_sel == 1 ? GPIO_HP_REAR : 0,
                              GPIO_HP_REAR);
      }
      mutex_unlock(&chip->mutex);
      return changed;
}

static int hp_volume_offset_info(struct snd_kcontrol *ctl,
                         struct snd_ctl_elem_info *info)
{
      static const char *const names[3] = {
            "< 64 ohms", "64-150 ohms", "150-300 ohms"
      };

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

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

      mutex_lock(&chip->mutex);
      if (data->hp_vol_att > 2 * 7)
            value->value.enumerated.item[0] = 0;
      else if (data->hp_vol_att > 0)
            value->value.enumerated.item[0] = 1;
      else
            value->value.enumerated.item[0] = 2;
      mutex_unlock(&chip->mutex);
      return 0;
}

static int hp_volume_offset_put(struct snd_kcontrol *ctl,
                        struct snd_ctl_elem_value *value)
{
      static const s8 atts[3] = { 2 * 16, 2 * 7, 0 };
      struct oxygen *chip = ctl->private_data;
      struct dg *data = chip->model_data;
      s8 att;
      int changed;

      if (value->value.enumerated.item[0] > 2)
            return -EINVAL;
      att = atts[value->value.enumerated.item[0]];
      mutex_lock(&chip->mutex);
      changed = att != data->hp_vol_att;
      if (changed) {
            data->hp_vol_att = att;
            if (data->output_sel) {
                  cs4245_write_cached(chip, CS4245_DAC_A_CTRL, att);
                  cs4245_write_cached(chip, CS4245_DAC_B_CTRL, att);
            }
      }
      mutex_unlock(&chip->mutex);
      return changed;
}

static int input_vol_info(struct snd_kcontrol *ctl,
                    struct snd_ctl_elem_info *info)
{
      info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
      info->count = 2;
      info->value.integer.min = 2 * -12;
      info->value.integer.max = 2 * 12;
      return 0;
}

static int input_vol_get(struct snd_kcontrol *ctl,
                   struct snd_ctl_elem_value *value)
{
      struct oxygen *chip = ctl->private_data;
      struct dg *data = chip->model_data;
      unsigned int idx = ctl->private_value;

      mutex_lock(&chip->mutex);
      value->value.integer.value[0] = data->input_vol[idx][0];
      value->value.integer.value[1] = data->input_vol[idx][1];
      mutex_unlock(&chip->mutex);
      return 0;
}

static int input_vol_put(struct snd_kcontrol *ctl,
                   struct snd_ctl_elem_value *value)
{
      struct oxygen *chip = ctl->private_data;
      struct dg *data = chip->model_data;
      unsigned int idx = ctl->private_value;
      int changed = 0;

      if (value->value.integer.value[0] < 2 * -12 ||
          value->value.integer.value[0] > 2 * 12 ||
          value->value.integer.value[1] < 2 * -12 ||
          value->value.integer.value[1] > 2 * 12)
            return -EINVAL;
      mutex_lock(&chip->mutex);
      changed = data->input_vol[idx][0] != value->value.integer.value[0] ||
              data->input_vol[idx][1] != value->value.integer.value[1];
      if (changed) {
            data->input_vol[idx][0] = value->value.integer.value[0];
            data->input_vol[idx][1] = value->value.integer.value[1];
            if (idx == data->input_sel) {
                  cs4245_write_cached(chip, CS4245_PGA_A_CTRL,
                                  data->input_vol[idx][0]);
                  cs4245_write_cached(chip, CS4245_PGA_B_CTRL,
                                  data->input_vol[idx][1]);
            }
      }
      mutex_unlock(&chip->mutex);
      return changed;
}

static DECLARE_TLV_DB_SCALE(cs4245_pga_db_scale, -1200, 50, 0);

static int input_sel_info(struct snd_kcontrol *ctl,
                    struct snd_ctl_elem_info *info)
{
      static const char *const names[4] = {
            "Mic", "Aux", "Front Mic", "Line"
      };

      return snd_ctl_enum_info(info, 1, 4, names);
}

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

      mutex_lock(&chip->mutex);
      value->value.enumerated.item[0] = data->input_sel;
      mutex_unlock(&chip->mutex);
      return 0;
}

static int input_sel_put(struct snd_kcontrol *ctl,
                   struct snd_ctl_elem_value *value)
{
      static const u8 sel_values[4] = {
            CS4245_SEL_MIC,
            CS4245_SEL_INPUT_1,
            CS4245_SEL_INPUT_2,
            CS4245_SEL_INPUT_4
      };
      struct oxygen *chip = ctl->private_data;
      struct dg *data = chip->model_data;
      int changed;

      if (value->value.enumerated.item[0] > 3)
            return -EINVAL;

      mutex_lock(&chip->mutex);
      changed = value->value.enumerated.item[0] != data->input_sel;
      if (changed) {
            data->input_sel = value->value.enumerated.item[0];

            cs4245_write(chip, CS4245_ANALOG_IN,
                       (data->cs4245_regs[CS4245_ANALOG_IN] &
                                          ~CS4245_SEL_MASK) |
                       sel_values[data->input_sel]);

            cs4245_write_cached(chip, CS4245_PGA_A_CTRL,
                            data->input_vol[data->input_sel][0]);
            cs4245_write_cached(chip, CS4245_PGA_B_CTRL,
                            data->input_vol[data->input_sel][1]);

            oxygen_write16_masked(chip, OXYGEN_GPIO_DATA,
                              data->input_sel ? 0 : GPIO_INPUT_ROUTE,
                              GPIO_INPUT_ROUTE);
      }
      mutex_unlock(&chip->mutex);
      return changed;
}

static int hpf_info(struct snd_kcontrol *ctl, struct snd_ctl_elem_info *info)
{
      static const char *const names[2] = { "Active", "Frozen" };

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

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

      value->value.enumerated.item[0] =
            !!(data->cs4245_regs[CS4245_ADC_CTRL] & CS4245_HPF_FREEZE);
      return 0;
}

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

      mutex_lock(&chip->mutex);
      reg = data->cs4245_regs[CS4245_ADC_CTRL] & ~CS4245_HPF_FREEZE;
      if (value->value.enumerated.item[0])
            reg |= CS4245_HPF_FREEZE;
      changed = reg != data->cs4245_regs[CS4245_ADC_CTRL];
      if (changed)
            cs4245_write(chip, CS4245_ADC_CTRL, reg);
      mutex_unlock(&chip->mutex);
      return changed;
}

#define INPUT_VOLUME(xname, index) { \
      .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
      .name = xname, \
      .info = input_vol_info, \
      .get = input_vol_get, \
      .put = input_vol_put, \
      .tlv = { .p = cs4245_pga_db_scale }, \
      .private_value = index, \
}
static const struct snd_kcontrol_new dg_controls[] = {
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Analog Output Playback Enum",
            .info = output_switch_info,
            .get = output_switch_get,
            .put = output_switch_put,
      },
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Headphones Impedance Playback Enum",
            .info = hp_volume_offset_info,
            .get = hp_volume_offset_get,
            .put = hp_volume_offset_put,
      },
      INPUT_VOLUME("Mic Capture Volume", 0),
      INPUT_VOLUME("Aux Capture Volume", 1),
      INPUT_VOLUME("Front Mic Capture Volume", 2),
      INPUT_VOLUME("Line Capture Volume", 3),
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Capture Source",
            .info = input_sel_info,
            .get = input_sel_get,
            .put = input_sel_put,
      },
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "ADC High-pass Filter Capture Enum",
            .info = hpf_info,
            .get = hpf_get,
            .put = hpf_put,
      },
};

static int dg_control_filter(struct snd_kcontrol_new *template)
{
      if (!strncmp(template->name, "Master Playback ", 16))
            return 1;
      return 0;
}

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

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

static void dump_cs4245_registers(struct oxygen *chip,
                          struct snd_info_buffer *buffer)
{
      struct dg *data = chip->model_data;
      unsigned int i;

      snd_iprintf(buffer, "\nCS4245:");
      for (i = 1; i <= 0x10; ++i)
            snd_iprintf(buffer, " %02x", data->cs4245_regs[i]);
      snd_iprintf(buffer, "\n");
}

struct oxygen_model model_xonar_dg = {
      .shortname = "Xonar DG",
      .longname = "C-Media Oxygen HD Audio",
      .chip = "CMI8786",
      .init = dg_init,
      .control_filter = dg_control_filter,
      .mixer_init = dg_mixer_init,
      .cleanup = dg_cleanup,
      .suspend = dg_suspend,
      .resume = dg_resume,
      .set_dac_params = set_cs4245_dac_params,
      .set_adc_params = set_cs4245_adc_params,
      .dump_registers = dump_cs4245_registers,
      .model_data_size = sizeof(struct dg),
      .device_config = PLAYBACK_0_TO_I2S |
                   PLAYBACK_1_TO_SPDIF |
                   CAPTURE_0_FROM_I2S_2,
      .dac_channels_pcm = 6,
      .dac_channels_mixer = 0,
      .function_flags = OXYGEN_FUNCTION_SPI,
      .dac_mclks = OXYGEN_MCLKS(256, 128, 128),
      .adc_mclks = OXYGEN_MCLKS(256, 128, 128),
      .dac_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
      .adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
};

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