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hifier.c

/*
 * C-Media CMI8788 driver for the MediaTek/TempoTec HiFier Fantasia
 *
 * 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, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#include <linux/pci.h>
#include <sound/control.h>
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/tlv.h>
#include "oxygen.h"
#include "ak4396.h"

MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
MODULE_DESCRIPTION("TempoTec HiFier driver");
MODULE_LICENSE("GPL v2");

static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "card index");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "enable card");

static struct pci_device_id hifier_ids[] __devinitdata = {
      { OXYGEN_PCI_SUBID(0x14c3, 0x1710) },
      { OXYGEN_PCI_SUBID(0x14c3, 0x1711) },
      { }
};
MODULE_DEVICE_TABLE(pci, hifier_ids);

struct hifier_data {
      u8 ak4396_ctl2;
};

static void ak4396_write(struct oxygen *chip, u8 reg, u8 value)
{
      oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER  |
                   OXYGEN_SPI_DATA_LENGTH_2 |
                   OXYGEN_SPI_CLOCK_160 |
                   (0 << OXYGEN_SPI_CODEC_SHIFT) |
                   OXYGEN_SPI_CEN_LATCH_CLOCK_HI,
                   AK4396_WRITE | (reg << 8) | value);
}

static void update_ak4396_volume(struct oxygen *chip)
{
      ak4396_write(chip, AK4396_LCH_ATT, chip->dac_volume[0]);
      ak4396_write(chip, AK4396_RCH_ATT, chip->dac_volume[1]);
}

static void hifier_registers_init(struct oxygen *chip)
{
      struct hifier_data *data = chip->model_data;

      ak4396_write(chip, AK4396_CONTROL_1, AK4396_DIF_24_MSB | AK4396_RSTN);
      ak4396_write(chip, AK4396_CONTROL_2, data->ak4396_ctl2);
      ak4396_write(chip, AK4396_CONTROL_3, AK4396_PCM);
      update_ak4396_volume(chip);
}

static void hifier_init(struct oxygen *chip)
{
      struct hifier_data *data = chip->model_data;

      data->ak4396_ctl2 = AK4396_SMUTE | AK4396_DEM_OFF | AK4396_DFS_NORMAL;
      hifier_registers_init(chip);

      snd_component_add(chip->card, "AK4396");
      snd_component_add(chip->card, "CS5340");
}

static void hifier_cleanup(struct oxygen *chip)
{
}

static void set_ak4396_params(struct oxygen *chip,
                         struct snd_pcm_hw_params *params)
{
      struct hifier_data *data = chip->model_data;
      u8 value;

      value = data->ak4396_ctl2 & ~AK4396_DFS_MASK;
      if (params_rate(params) <= 54000)
            value |= AK4396_DFS_NORMAL;
      else if (params_rate(params) <= 108000)
            value |= AK4396_DFS_DOUBLE;
      else
            value |= AK4396_DFS_QUAD;
      data->ak4396_ctl2 = value;
      ak4396_write(chip, AK4396_CONTROL_1, AK4396_DIF_24_MSB);
      ak4396_write(chip, AK4396_CONTROL_2, value);
      ak4396_write(chip, AK4396_CONTROL_1, AK4396_DIF_24_MSB | AK4396_RSTN);
}

static void update_ak4396_mute(struct oxygen *chip)
{
      struct hifier_data *data = chip->model_data;
      u8 value;

      value = data->ak4396_ctl2 & ~AK4396_SMUTE;
      if (chip->dac_mute)
            value |= AK4396_SMUTE;
      data->ak4396_ctl2 = value;
      ak4396_write(chip, AK4396_CONTROL_2, value);
}

static void set_cs5340_params(struct oxygen *chip,
                        struct snd_pcm_hw_params *params)
{
}

static const DECLARE_TLV_DB_LINEAR(ak4396_db_scale, TLV_DB_GAIN_MUTE, 0);

static int hifier_control_filter(struct snd_kcontrol_new *template)
{
      if (!strcmp(template->name, "Stereo Upmixing"))
            return 1; /* stereo only - we don't need upmixing */
      return 0;
}

static const struct oxygen_model model_hifier = {
      .shortname = "C-Media CMI8787",
      .longname = "C-Media Oxygen HD Audio",
      .chip = "CMI8788",
      .owner = THIS_MODULE,
      .init = hifier_init,
      .control_filter = hifier_control_filter,
      .cleanup = hifier_cleanup,
      .resume = hifier_registers_init,
      .set_dac_params = set_ak4396_params,
      .set_adc_params = set_cs5340_params,
      .update_dac_volume = update_ak4396_volume,
      .update_dac_mute = update_ak4396_mute,
      .dac_tlv = ak4396_db_scale,
      .model_data_size = sizeof(struct hifier_data),
      .pcm_dev_cfg = PLAYBACK_0_TO_I2S |
                   PLAYBACK_1_TO_SPDIF |
                   CAPTURE_0_FROM_I2S_1,
      .dac_channels = 2,
      .dac_volume_min = 0,
      .dac_volume_max = 255,
      .function_flags = OXYGEN_FUNCTION_SPI,
      .dac_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
      .adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
};

static int __devinit hifier_probe(struct pci_dev *pci,
                          const struct pci_device_id *pci_id)
{
      static int dev;
      int err;

      if (dev >= SNDRV_CARDS)
            return -ENODEV;
      if (!enable[dev]) {
            ++dev;
            return -ENOENT;
      }
      err = oxygen_pci_probe(pci, index[dev], id[dev], &model_hifier);
      if (err >= 0)
            ++dev;
      return err;
}

static struct pci_driver hifier_driver = {
      .name = "CMI8787HiFier",
      .id_table = hifier_ids,
      .probe = hifier_probe,
      .remove = __devexit_p(oxygen_pci_remove),
#ifdef CONFIG_PM
      .suspend = oxygen_pci_suspend,
      .resume = oxygen_pci_resume,
#endif
};

static int __init alsa_card_hifier_init(void)
{
      return pci_register_driver(&hifier_driver);
}

static void __exit alsa_card_hifier_exit(void)
{
      pci_unregister_driver(&hifier_driver);
}

module_init(alsa_card_hifier_init)
module_exit(alsa_card_hifier_exit)

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