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   1 /*
   2  * C-Media CMI8788 driver for C-Media's reference design and for the X-Meridian
   3  *
   4  * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
   5  *
   6  *
   7  *  This driver is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License, version 2.
   9  *
  10  *  This driver is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this driver; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  18  */
  19
  20 /*
  21  * SPI 0 -> 1st AK4396 (front)
  22  * SPI 1 -> 2nd AK4396 (surround)
  23  * SPI 2 -> 3rd AK4396 (center/LFE)
  24  * SPI 3 -> WM8785
  25  * SPI 4 -> 4th AK4396 (back)
  26  *
  27  * GPIO 0 -> DFS0 of AK5385
  28  * GPIO 1 -> DFS1 of AK5385
  29  */
  30
  31 #include <linux/delay.h>
  32 #include <linux/mutex.h>
  33 #include <linux/pci.h>
  34 #include <sound/ac97_codec.h>
  35 #include <sound/control.h>
  36 #include <sound/core.h>
  37 #include <sound/initval.h>
  38 #include <sound/pcm.h>
  39 #include <sound/pcm_params.h>
  40 #include <sound/tlv.h>
  41 #include "oxygen.h"
  42 #include "ak4396.h"
  43 #include "wm8785.h"
  44
  45 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
  46 MODULE_DESCRIPTION("C-Media CMI8788 driver");
  47 MODULE_LICENSE("GPL v2");
  48 MODULE_SUPPORTED_DEVICE("{{C-Media,CMI8788}}");
  49
  50 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  51 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  52 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  53
  54 module_param_array(index, int, NULL, 0444);
  55 MODULE_PARM_DESC(index, "card index");
  56 module_param_array(id, charp, NULL, 0444);
  57 MODULE_PARM_DESC(id, "ID string");
  58 module_param_array(enable, bool, NULL, 0444);
  59 MODULE_PARM_DESC(enable, "enable card");
  60
  61 enum {
  62         MODEL_CMEDIA_REF,       /* C-Media's reference design */
  63         MODEL_MERIDIAN,         /* AuzenTech X-Meridian */
  64 };
  65
  66 static struct pci_device_id oxygen_ids[] __devinitdata = {
  67         { OXYGEN_PCI_SUBID(0x10b0, 0x0216), .driver_data = MODEL_CMEDIA_REF },
  68         { OXYGEN_PCI_SUBID(0x10b0, 0x0218), .driver_data = MODEL_CMEDIA_REF },
  69         { OXYGEN_PCI_SUBID(0x10b0, 0x0219), .driver_data = MODEL_CMEDIA_REF },
  70         { OXYGEN_PCI_SUBID(0x13f6, 0x0001), .driver_data = MODEL_CMEDIA_REF },
  71         { OXYGEN_PCI_SUBID(0x13f6, 0x0010), .driver_data = MODEL_CMEDIA_REF },
  72         { OXYGEN_PCI_SUBID(0x13f6, 0x8788), .driver_data = MODEL_CMEDIA_REF },
  73         { OXYGEN_PCI_SUBID(0x147a, 0xa017), .driver_data = MODEL_CMEDIA_REF },
  74         { OXYGEN_PCI_SUBID(0x1a58, 0x0910), .driver_data = MODEL_CMEDIA_REF },
  75         { OXYGEN_PCI_SUBID(0x415a, 0x5431), .driver_data = MODEL_MERIDIAN },
  76         { OXYGEN_PCI_SUBID(0x7284, 0x9761), .driver_data = MODEL_CMEDIA_REF },
  77         { }
  78 };
  79 MODULE_DEVICE_TABLE(pci, oxygen_ids);
  80
  81
  82 #define GPIO_AK5385_DFS_MASK    0x0003
  83 #define GPIO_AK5385_DFS_NORMAL  0x0000
  84 #define GPIO_AK5385_DFS_DOUBLE  0x0001
  85 #define GPIO_AK5385_DFS_QUAD    0x0002
  86
  87 struct generic_data {
  88         u8 ak4396_ctl2;
  89         u16 saved_wm8785_registers[2];
  90 };
  91
  92 static void ak4396_write(struct oxygen *chip, unsigned int codec,
  93                          u8 reg, u8 value)
  94 {
  95         /* maps ALSA channel pair number to SPI output */
  96         static const u8 codec_spi_map[4] = {
  97                 0, 1, 2, 4
  98         };
  99         oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER |
 100                          OXYGEN_SPI_DATA_LENGTH_2 |
 101                          OXYGEN_SPI_CLOCK_160 |
 102                          (codec_spi_map[codec] << OXYGEN_SPI_CODEC_SHIFT) |
 103                          OXYGEN_SPI_CEN_LATCH_CLOCK_HI,
 104                          AK4396_WRITE | (reg << 8) | value);
 105 }
 106
 107 static void wm8785_write(struct oxygen *chip, u8 reg, unsigned int value)
 108 {
 109         struct generic_data *data = chip->model_data;
 110
 111         oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER |
 112                          OXYGEN_SPI_DATA_LENGTH_2 |
 113                          OXYGEN_SPI_CLOCK_160 |
 114                          (3 << OXYGEN_SPI_CODEC_SHIFT) |
 115                          OXYGEN_SPI_CEN_LATCH_CLOCK_LO,
 116                          (reg << 9) | value);
 117         if (reg < ARRAY_SIZE(data->saved_wm8785_registers))
 118                 data->saved_wm8785_registers[reg] = value;
 119 }
 120
 121 static void update_ak4396_volume(struct oxygen *chip)
 122 {
 123         unsigned int i;
 124
 125         for (i = 0; i < 4; ++i) {
 126                 ak4396_write(chip, i,
 127                              AK4396_LCH_ATT, chip->dac_volume[i * 2]);
 128                 ak4396_write(chip, i,
 129                              AK4396_RCH_ATT, chip->dac_volume[i * 2 + 1]);
 130         }
 131 }
 132
 133 static void ak4396_registers_init(struct oxygen *chip)
 134 {
 135         struct generic_data *data = chip->model_data;
 136         unsigned int i;
 137
 138         for (i = 0; i < 4; ++i) {
 139                 ak4396_write(chip, i,
 140                              AK4396_CONTROL_1, AK4396_DIF_24_MSB | AK4396_RSTN);
 141                 ak4396_write(chip, i,
 142                              AK4396_CONTROL_2, data->ak4396_ctl2);
 143                 ak4396_write(chip, i,
 144                              AK4396_CONTROL_3, AK4396_PCM);
 145         }
 146         update_ak4396_volume(chip);
 147 }
 148
 149 static void ak4396_init(struct oxygen *chip)
 150 {
 151         struct generic_data *data = chip->model_data;
 152
 153         data->ak4396_ctl2 = AK4396_SMUTE | AK4396_DEM_OFF | AK4396_DFS_NORMAL;
 154         ak4396_registers_init(chip);
 155         snd_component_add(chip->card, "AK4396");
 156 }
 157
 158 static void ak5385_init(struct oxygen *chip)
 159 {
 160         oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, GPIO_AK5385_DFS_MASK);
 161         oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA, GPIO_AK5385_DFS_MASK);
 162         snd_component_add(chip->card, "AK5385");
 163 }
 164
 165 static void wm8785_registers_init(struct oxygen *chip)
 166 {
 167         struct generic_data *data = chip->model_data;
 168
 169         wm8785_write(chip, WM8785_R7, 0);
 170         wm8785_write(chip, WM8785_R0, data->saved_wm8785_registers[0]);
 171         wm8785_write(chip, WM8785_R1, data->saved_wm8785_registers[1]);
 172 }
 173
 174 static void wm8785_init(struct oxygen *chip)
 175 {
 176         struct generic_data *data = chip->model_data;
 177
 178         data->saved_wm8785_registers[0] = WM8785_MCR_SLAVE |
 179                 WM8785_OSR_SINGLE | WM8785_FORMAT_LJUST;
 180         data->saved_wm8785_registers[1] = WM8785_WL_24;
 181         wm8785_registers_init(chip);
 182         snd_component_add(chip->card, "WM8785");
 183 }
 184
 185 static void generic_init(struct oxygen *chip)
 186 {
 187         ak4396_init(chip);
 188         wm8785_init(chip);
 189 }
 190
 191 static void meridian_init(struct oxygen *chip)
 192 {
 193         ak4396_init(chip);
 194         ak5385_init(chip);
 195 }
 196
 197 static void generic_cleanup(struct oxygen *chip)
 198 {
 199 }
 200
 201 static void generic_resume(struct oxygen *chip)
 202 {
 203         ak4396_registers_init(chip);
 204         wm8785_registers_init(chip);
 205 }
 206
 207 static void meridian_resume(struct oxygen *chip)
 208 {
 209         ak4396_registers_init(chip);
 210 }
 211
 212 static void set_ak4396_params(struct oxygen *chip,
 213                               struct snd_pcm_hw_params *params)
 214 {
 215         struct generic_data *data = chip->model_data;
 216         unsigned int i;
 217         u8 value;
 218
 219         value = data->ak4396_ctl2 & ~AK4396_DFS_MASK;
 220         if (params_rate(params) <= 54000)
 221                 value |= AK4396_DFS_NORMAL;
 222         else if (params_rate(params) <= 108000)
 223                 value |= AK4396_DFS_DOUBLE;
 224         else
 225                 value |= AK4396_DFS_QUAD;
 226         data->ak4396_ctl2 = value;
 227
 228         msleep(1); /* wait for the new MCLK to become stable */
 229
 230         for (i = 0; i < 4; ++i) {
 231                 ak4396_write(chip, i,
 232                              AK4396_CONTROL_1, AK4396_DIF_24_MSB);
 233                 ak4396_write(chip, i,
 234                              AK4396_CONTROL_2, value);
 235                 ak4396_write(chip, i,
 236                              AK4396_CONTROL_1, AK4396_DIF_24_MSB | AK4396_RSTN);
 237         }
 238 }
 239
 240 static void update_ak4396_mute(struct oxygen *chip)
 241 {
 242         struct generic_data *data = chip->model_data;
 243         unsigned int i;
 244         u8 value;
 245
 246         value = data->ak4396_ctl2 & ~AK4396_SMUTE;
 247         if (chip->dac_mute)
 248                 value |= AK4396_SMUTE;
 249         data->ak4396_ctl2 = value;
 250         for (i = 0; i < 4; ++i)
 251                 ak4396_write(chip, i, AK4396_CONTROL_2, value);
 252 }
 253
 254 static void set_wm8785_params(struct oxygen *chip,
 255                               struct snd_pcm_hw_params *params)
 256 {
 257         unsigned int value;
 258
 259         wm8785_write(chip, WM8785_R7, 0);
 260
 261         value = WM8785_MCR_SLAVE | WM8785_FORMAT_LJUST;
 262         if (params_rate(params) <= 48000)
 263                 value |= WM8785_OSR_SINGLE;
 264         else if (params_rate(params) <= 96000)
 265                 value |= WM8785_OSR_DOUBLE;
 266         else
 267                 value |= WM8785_OSR_QUAD;
 268         wm8785_write(chip, WM8785_R0, value);
 269
 270         if (snd_pcm_format_width(params_format(params)) <= 16)
 271                 value = WM8785_WL_16;
 272         else
 273                 value = WM8785_WL_24;
 274         wm8785_write(chip, WM8785_R1, value);
 275 }
 276
 277 static void set_ak5385_params(struct oxygen *chip,
 278                               struct snd_pcm_hw_params *params)
 279 {
 280         unsigned int value;
 281
 282         if (params_rate(params) <= 54000)
 283                 value = GPIO_AK5385_DFS_NORMAL;
 284         else if (params_rate(params) <= 108000)
 285                 value = GPIO_AK5385_DFS_DOUBLE;
 286         else
 287                 value = GPIO_AK5385_DFS_QUAD;
 288         oxygen_write16_masked(chip, OXYGEN_GPIO_DATA,
 289                               value, GPIO_AK5385_DFS_MASK);
 290 }
 291
 292 static const DECLARE_TLV_DB_LINEAR(ak4396_db_scale, TLV_DB_GAIN_MUTE, 0);
 293
 294 static int generic_probe(struct oxygen *chip, unsigned long driver_data)
 295 {
 296         if (driver_data == MODEL_MERIDIAN) {
 297                 chip->model.init = meridian_init;
 298                 chip->model.resume = meridian_resume;
 299                 chip->model.set_adc_params = set_ak5385_params;
 300                 chip->model.device_config = PLAYBACK_0_TO_I2S |
 301                                             PLAYBACK_1_TO_SPDIF |
 302                                             CAPTURE_0_FROM_I2S_2 |
 303                                             CAPTURE_1_FROM_SPDIF;
 304                 chip->model.misc_flags = OXYGEN_MISC_MIDI;
 305                 chip->model.device_config |= MIDI_OUTPUT | MIDI_INPUT;
 306         }
 307         return 0;
 308 }
 309
 310 static const struct oxygen_model model_generic = {
 311         .shortname = "C-Media CMI8788",
 312         .longname = "C-Media Oxygen HD Audio",
 313         .chip = "CMI8788",
 314         .owner = THIS_MODULE,
 315         .probe = generic_probe,
 316         .init = generic_init,
 317         .cleanup = generic_cleanup,
 318         .resume = generic_resume,
 319         .set_dac_params = set_ak4396_params,
 320         .set_adc_params = set_wm8785_params,
 321         .update_dac_volume = update_ak4396_volume,
 322         .update_dac_mute = update_ak4396_mute,
 323         .dac_tlv = ak4396_db_scale,
 324         .model_data_size = sizeof(struct generic_data),
 325         .device_config = PLAYBACK_0_TO_I2S |
 326                          PLAYBACK_1_TO_SPDIF |
 327                          PLAYBACK_2_TO_AC97_1 |
 328                          CAPTURE_0_FROM_I2S_1 |
 329                          CAPTURE_1_FROM_SPDIF |
 330                          CAPTURE_2_FROM_AC97_1,
 331         .dac_channels = 8,
 332         .dac_volume_min = 0,
 333         .dac_volume_max = 255,
 334         .function_flags = OXYGEN_FUNCTION_SPI |
 335                           OXYGEN_FUNCTION_ENABLE_SPI_4_5,
 336         .dac_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
 337         .adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
 338 };
 339
 340 static int __devinit generic_oxygen_probe(struct pci_dev *pci,
 341                                           const struct pci_device_id *pci_id)
 342 {
 343         static int dev;
 344         int err;
 345
 346         if (dev >= SNDRV_CARDS)
 347                 return -ENODEV;
 348         if (!enable[dev]) {
 349                 ++dev;
 350                 return -ENOENT;
 351         }
 352         err = oxygen_pci_probe(pci, index[dev], id[dev],
 353                                &model_generic, pci_id->driver_data);
 354         if (err >= 0)
 355                 ++dev;
 356         return err;
 357 }
 358
 359 static struct pci_driver oxygen_driver = {
 360         .name = "CMI8788",
 361         .id_table = oxygen_ids,
 362         .probe = generic_oxygen_probe,
 363         .remove = __devexit_p(oxygen_pci_remove),
 364 #ifdef CONFIG_PM
 365         .suspend = oxygen_pci_suspend,
 366         .resume = oxygen_pci_resume,
 367 #endif
 368 };
 369
 370 static int __init alsa_card_oxygen_init(void)
 371 {
 372         return pci_register_driver(&oxygen_driver);
 373 }
 374
 375 static void __exit alsa_card_oxygen_exit(void)
 376 {
 377         pci_unregister_driver(&oxygen_driver);
 378 }
 379
 380 module_init(alsa_card_oxygen_init)
 381 module_exit(alsa_card_oxygen_exit)