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oxygen.c

/*
 * C-Media CMI8788 driver for C-Media's reference design and for the X-Meridian
 *
 * 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
 */

/*
 * SPI 0 -> 1st AK4396 (front)
 * SPI 1 -> 2nd AK4396 (surround)
 * SPI 2 -> 3rd AK4396 (center/LFE)
 * SPI 3 -> WM8785
 * SPI 4 -> 4th AK4396 (back)
 *
 * GPIO 0 -> DFS0 of AK5385
 * GPIO 1 -> DFS1 of AK5385
 */

#include <linux/mutex.h>
#include <linux/pci.h>
#include <sound/ac97_codec.h>
#include <sound/control.h>
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/tlv.h>
#include "oxygen.h"
#include "ak4396.h"
#include "cm9780.h"

MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
MODULE_DESCRIPTION("C-Media CMI8788 driver");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{C-Media,CMI8788}}");

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 oxygen_ids[] __devinitdata = {
      { OXYGEN_PCI_SUBID(0x10b0, 0x0216) },
      { OXYGEN_PCI_SUBID(0x10b0, 0x0218) },
      { OXYGEN_PCI_SUBID(0x10b0, 0x0219) },
      { OXYGEN_PCI_SUBID(0x13f6, 0x0001) },
      { OXYGEN_PCI_SUBID(0x13f6, 0x0010) },
      { OXYGEN_PCI_SUBID(0x13f6, 0x8788) },
      { OXYGEN_PCI_SUBID(0x147a, 0xa017) },
      { OXYGEN_PCI_SUBID(0x1a58, 0x0910) },
      { OXYGEN_PCI_SUBID(0x415a, 0x5431), .driver_data = 1 },
      { OXYGEN_PCI_SUBID(0x7284, 0x9761) },
      { }
};
MODULE_DEVICE_TABLE(pci, oxygen_ids);


#define GPIO_AK5385_DFS_MASK  0x0003
#define GPIO_AK5385_DFS_NORMAL      0x0000
#define GPIO_AK5385_DFS_DOUBLE      0x0001
#define GPIO_AK5385_DFS_QUAD  0x0002

#define GPIO_LINE_MUTE        CM9780_GPO0

#define WM8785_R0 0
#define WM8785_R1 1
#define WM8785_R2 2
#define WM8785_R7 7

/* R0 */
#define WM8785_MCR_MASK       0x007
#define WM8785_MCR_SLAVE      0x000
#define WM8785_MCR_MASTER_128 0x001
#define WM8785_MCR_MASTER_192 0x002
#define WM8785_MCR_MASTER_256 0x003
#define WM8785_MCR_MASTER_384 0x004
#define WM8785_MCR_MASTER_512 0x005
#define WM8785_MCR_MASTER_768 0x006
#define WM8785_OSR_MASK       0x018
#define WM8785_OSR_SINGLE     0x000
#define WM8785_OSR_DOUBLE     0x008
#define WM8785_OSR_QUAD       0x010
#define WM8785_FORMAT_MASK    0x060
#define WM8785_FORMAT_RJUST   0x000
#define WM8785_FORMAT_LJUST   0x020
#define WM8785_FORMAT_I2S     0x040
#define WM8785_FORMAT_DSP     0x060
/* R1 */
#define WM8785_WL_MASK        0x003
#define WM8785_WL_16          0x000
#define WM8785_WL_20          0x001
#define WM8785_WL_24          0x002
#define WM8785_WL_32          0x003
#define WM8785_LRP            0x004
#define WM8785_BCLKINV        0x008
#define WM8785_LRSWAP         0x010
#define WM8785_DEVNO_MASK     0x0e0
/* R2 */
#define WM8785_HPFR           0x001
#define WM8785_HPFL           0x002
#define WM8785_SDODIS         0x004
#define WM8785_PWRDNR         0x008
#define WM8785_PWRDNL         0x010
#define WM8785_TDM_MASK       0x1c0

struct generic_data {
      u8 ak4396_ctl2;
};

static void ak4396_write(struct oxygen *chip, unsigned int codec,
                   u8 reg, u8 value)
{
      /* maps ALSA channel pair number to SPI output */
      static const u8 codec_spi_map[4] = {
            0, 1, 2, 4
      };
      oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER |
                   OXYGEN_SPI_DATA_LENGTH_2 |
                   OXYGEN_SPI_CLOCK_160 |
                   (codec_spi_map[codec] << OXYGEN_SPI_CODEC_SHIFT) |
                   OXYGEN_SPI_CEN_LATCH_CLOCK_HI,
                   AK4396_WRITE | (reg << 8) | value);
}

static void wm8785_write(struct oxygen *chip, u8 reg, unsigned int value)
{
      oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER |
                   OXYGEN_SPI_DATA_LENGTH_2 |
                   OXYGEN_SPI_CLOCK_160 |
                   (3 << OXYGEN_SPI_CODEC_SHIFT) |
                   OXYGEN_SPI_CEN_LATCH_CLOCK_LO,
                   (reg << 9) | value);
}

static void ak4396_init(struct oxygen *chip)
{
      struct generic_data *data = chip->model_data;
      unsigned int i;

      data->ak4396_ctl2 = AK4396_DEM_OFF | AK4396_DFS_NORMAL;
      for (i = 0; i < 4; ++i) {
            ak4396_write(chip, i,
                       AK4396_CONTROL_1, AK4396_DIF_24_MSB | AK4396_RSTN);
            ak4396_write(chip, i,
                       AK4396_CONTROL_2, data->ak4396_ctl2);
            ak4396_write(chip, i,
                       AK4396_CONTROL_3, AK4396_PCM);
            ak4396_write(chip, i, AK4396_LCH_ATT, 0xff);
            ak4396_write(chip, i, AK4396_RCH_ATT, 0xff);
      }
      snd_component_add(chip->card, "AK4396");
}

static void ak5385_init(struct oxygen *chip)
{
      oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, GPIO_AK5385_DFS_MASK);
      oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA, GPIO_AK5385_DFS_MASK);
      snd_component_add(chip->card, "AK5385");
}

static void wm8785_init(struct oxygen *chip)
{
      wm8785_write(chip, WM8785_R7, 0);
      wm8785_write(chip, WM8785_R0, WM8785_MCR_SLAVE |
                 WM8785_OSR_SINGLE | WM8785_FORMAT_LJUST);
      wm8785_write(chip, WM8785_R1, WM8785_WL_24);
      snd_component_add(chip->card, "WM8785");
}

static void cmi9780_init(struct oxygen *chip)
{
      oxygen_ac97_clear_bits(chip, 0, CM9780_GPIO_STATUS, GPIO_LINE_MUTE);
}

static void generic_init(struct oxygen *chip)
{
      ak4396_init(chip);
      wm8785_init(chip);
      cmi9780_init(chip);
}

static void meridian_init(struct oxygen *chip)
{
      ak4396_init(chip);
      ak5385_init(chip);
      cmi9780_init(chip);
}

static void generic_cleanup(struct oxygen *chip)
{
}

static void set_ak4396_params(struct oxygen *chip,
                        struct snd_pcm_hw_params *params)
{
      struct generic_data *data = chip->model_data;
      unsigned int i;
      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;
      for (i = 0; i < 4; ++i) {
            ak4396_write(chip, i,
                       AK4396_CONTROL_1, AK4396_DIF_24_MSB);
            ak4396_write(chip, i,
                       AK4396_CONTROL_2, value);
            ak4396_write(chip, i,
                       AK4396_CONTROL_1, AK4396_DIF_24_MSB | AK4396_RSTN);
      }
}

static void update_ak4396_volume(struct oxygen *chip)
{
      unsigned int i;

      for (i = 0; i < 4; ++i) {
            ak4396_write(chip, i,
                       AK4396_LCH_ATT, chip->dac_volume[i * 2]);
            ak4396_write(chip, i,
                       AK4396_RCH_ATT, chip->dac_volume[i * 2 + 1]);
      }
}

static void update_ak4396_mute(struct oxygen *chip)
{
      struct generic_data *data = chip->model_data;
      unsigned int i;
      u8 value;

      value = data->ak4396_ctl2 & ~AK4396_SMUTE;
      if (chip->dac_mute)
            value |= AK4396_SMUTE;
      data->ak4396_ctl2 = value;
      for (i = 0; i < 4; ++i)
            ak4396_write(chip, i, AK4396_CONTROL_2, value);
}

static void set_wm8785_params(struct oxygen *chip,
                        struct snd_pcm_hw_params *params)
{
      unsigned int value;

      wm8785_write(chip, WM8785_R7, 0);

      value = WM8785_MCR_SLAVE | WM8785_FORMAT_LJUST;
      if (params_rate(params) <= 48000)
            value |= WM8785_OSR_SINGLE;
      else if (params_rate(params) <= 96000)
            value |= WM8785_OSR_DOUBLE;
      else
            value |= WM8785_OSR_QUAD;
      wm8785_write(chip, WM8785_R0, value);

      if (snd_pcm_format_width(params_format(params)) <= 16)
            value = WM8785_WL_16;
      else
            value = WM8785_WL_24;
      wm8785_write(chip, WM8785_R1, value);
}

static void set_ak5385_params(struct oxygen *chip,
                        struct snd_pcm_hw_params *params)
{
      unsigned int value;

      if (params_rate(params) <= 54000)
            value = GPIO_AK5385_DFS_NORMAL;
      else if (params_rate(params) <= 108000)
            value = GPIO_AK5385_DFS_DOUBLE;
      else
            value = GPIO_AK5385_DFS_QUAD;
      oxygen_write16_masked(chip, OXYGEN_GPIO_DATA,
                        value, GPIO_AK5385_DFS_MASK);
}

static void cmi9780_switch_hook(struct oxygen *chip, unsigned int codec,
                        unsigned int reg, int mute)
{
      if (codec != 0)
            return;
      switch (reg) {
      case AC97_LINE:
            oxygen_write_ac97_masked(chip, 0, CM9780_GPIO_STATUS,
                               mute ? GPIO_LINE_MUTE : 0,
                               GPIO_LINE_MUTE);
            break;
      case AC97_MIC:
      case AC97_CD:
      case AC97_AUX:
            if (!mute)
                  oxygen_ac97_set_bits(chip, 0, CM9780_GPIO_STATUS,
                                   GPIO_LINE_MUTE);
            break;
      }
}

static const DECLARE_TLV_DB_LINEAR(ak4396_db_scale, TLV_DB_GAIN_MUTE, 0);

static int ak4396_control_filter(struct snd_kcontrol_new *template)
{
      if (!strcmp(template->name, "Master Playback Volume")) {
            template->access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
            template->tlv.p = ak4396_db_scale;
      }
      return 0;
}

static const struct oxygen_model model_generic = {
      .shortname = "C-Media CMI8788",
      .longname = "C-Media Oxygen HD Audio",
      .chip = "CMI8788",
      .owner = THIS_MODULE,
      .init = generic_init,
      .control_filter = ak4396_control_filter,
      .cleanup = generic_cleanup,
      .set_dac_params = set_ak4396_params,
      .set_adc_params = set_wm8785_params,
      .update_dac_volume = update_ak4396_volume,
      .update_dac_mute = update_ak4396_mute,
      .ac97_switch_hook = cmi9780_switch_hook,
      .model_data_size = sizeof(struct generic_data),
      .dac_channels = 8,
      .used_channels = OXYGEN_CHANNEL_A |
                   OXYGEN_CHANNEL_C |
                   OXYGEN_CHANNEL_SPDIF |
                   OXYGEN_CHANNEL_MULTICH |
                   OXYGEN_CHANNEL_AC97,
      .function_flags = 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_meridian = {
      .shortname = "C-Media CMI8788",
      .longname = "C-Media Oxygen HD Audio",
      .chip = "CMI8788",
      .owner = THIS_MODULE,
      .init = meridian_init,
      .control_filter = ak4396_control_filter,
      .cleanup = generic_cleanup,
      .set_dac_params = set_ak4396_params,
      .set_adc_params = set_ak5385_params,
      .update_dac_volume = update_ak4396_volume,
      .update_dac_mute = update_ak4396_mute,
      .ac97_switch_hook = cmi9780_switch_hook,
      .model_data_size = sizeof(struct generic_data),
      .dac_channels = 8,
      .used_channels = OXYGEN_CHANNEL_B |
                   OXYGEN_CHANNEL_C |
                   OXYGEN_CHANNEL_SPDIF |
                   OXYGEN_CHANNEL_MULTICH |
                   OXYGEN_CHANNEL_AC97,
      .function_flags = OXYGEN_FUNCTION_ENABLE_SPI_4_5,
      .dac_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
      .adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
};

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

      if (dev >= SNDRV_CARDS)
            return -ENODEV;
      if (!enable[dev]) {
            ++dev;
            return -ENOENT;
      }
      is_meridian = pci_id->driver_data;
      err = oxygen_pci_probe(pci, index[dev], id[dev], is_meridian,
                         is_meridian ? &model_meridian : &model_generic);
      if (err >= 0)
            ++dev;
      return err;
}

static struct pci_driver oxygen_driver = {
      .name = "CMI8788",
      .id_table = oxygen_ids,
      .probe = generic_oxygen_probe,
      .remove = __devexit_p(oxygen_pci_remove),
};

static int __init alsa_card_oxygen_init(void)
{
      return pci_register_driver(&oxygen_driver);
}

static void __exit alsa_card_oxygen_exit(void)
{
      pci_unregister_driver(&oxygen_driver);
}

module_init(alsa_card_oxygen_init)
module_exit(alsa_card_oxygen_exit)

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