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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 static struct pci_device_id oxygen_ids[] __devinitdata = {
  62         { OXYGEN_PCI_SUBID(0x10b0, 0x0216) },
  63         { OXYGEN_PCI_SUBID(0x10b0, 0x0218) },
  64         { OXYGEN_PCI_SUBID(0x10b0, 0x0219) },
  65         { OXYGEN_PCI_SUBID(0x13f6, 0x0001) },
  66         { OXYGEN_PCI_SUBID(0x13f6, 0x0010) },
  67         { OXYGEN_PCI_SUBID(0x13f6, 0x8788) },
  68         { OXYGEN_PCI_SUBID(0x147a, 0xa017) },
  69         { OXYGEN_PCI_SUBID(0x1a58, 0x0910) },
  70         { OXYGEN_PCI_SUBID(0x415a, 0x5431), .driver_data = 1 },
  71         { OXYGEN_PCI_SUBID(0x7284, 0x9761) },
  72         { }
  73 };
  74 MODULE_DEVICE_TABLE(pci, oxygen_ids);
  75
  76
  77 #define GPIO_AK5385_DFS_MASK    0x0003
  78 #define GPIO_AK5385_DFS_NORMAL  0x0000
  79 #define GPIO_AK5385_DFS_DOUBLE  0x0001
  80 #define GPIO_AK5385_DFS_QUAD    0x0002
  81
  82 struct generic_data {
  83         u8 ak4396_ctl2;
  84         u16 saved_wm8785_registers[2];
  85 };
  86
  87 static void ak4396_write(struct oxygen *chip, unsigned int codec,
  88                          u8 reg, u8 value)
  89 {
  90         /* maps ALSA channel pair number to SPI output */
  91         static const u8 codec_spi_map[4] = {
  92                 0, 1, 2, 4
  93         };
  94         oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER |
  95                          OXYGEN_SPI_DATA_LENGTH_2 |
  96                          OXYGEN_SPI_CLOCK_160 |
  97                          (codec_spi_map[codec] << OXYGEN_SPI_CODEC_SHIFT) |
  98                          OXYGEN_SPI_CEN_LATCH_CLOCK_HI,
  99                          AK4396_WRITE | (reg << 8) | value);
 100 }
 101
 102 static void wm8785_write(struct oxygen *chip, u8 reg, unsigned int value)
 103 {
 104         struct generic_data *data = chip->model_data;
 105
 106         oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER |
 107                          OXYGEN_SPI_DATA_LENGTH_2 |
 108                          OXYGEN_SPI_CLOCK_160 |
 109                          (3 << OXYGEN_SPI_CODEC_SHIFT) |
 110                          OXYGEN_SPI_CEN_LATCH_CLOCK_LO,
 111                          (reg << 9) | value);
 112         if (reg < ARRAY_SIZE(data->saved_wm8785_registers))
 113                 data->saved_wm8785_registers[reg] = value;
 114 }
 115
 116 static void update_ak4396_volume(struct oxygen *chip)
 117 {
 118         unsigned int i;
 119
 120         for (i = 0; i < 4; ++i) {
 121                 ak4396_write(chip, i,
 122                              AK4396_LCH_ATT, chip->dac_volume[i * 2]);
 123                 ak4396_write(chip, i,
 124                              AK4396_RCH_ATT, chip->dac_volume[i * 2 + 1]);
 125         }
 126 }
 127
 128 static void ak4396_registers_init(struct oxygen *chip)
 129 {
 130         struct generic_data *data = chip->model_data;
 131         unsigned int i;
 132
 133         for (i = 0; i < 4; ++i) {
 134                 ak4396_write(chip, i,
 135                              AK4396_CONTROL_1, AK4396_DIF_24_MSB | AK4396_RSTN);
 136                 ak4396_write(chip, i,
 137                              AK4396_CONTROL_2, data->ak4396_ctl2);
 138                 ak4396_write(chip, i,
 139                              AK4396_CONTROL_3, AK4396_PCM);
 140         }
 141         update_ak4396_volume(chip);
 142 }
 143
 144 static void ak4396_init(struct oxygen *chip)
 145 {
 146         struct generic_data *data = chip->model_data;
 147
 148         data->ak4396_ctl2 = AK4396_SMUTE | AK4396_DEM_OFF | AK4396_DFS_NORMAL;
 149         ak4396_registers_init(chip);
 150         snd_component_add(chip->card, "AK4396");
 151 }
 152
 153 static void ak5385_init(struct oxygen *chip)
 154 {
 155         oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, GPIO_AK5385_DFS_MASK);
 156         oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA, GPIO_AK5385_DFS_MASK);
 157         snd_component_add(chip->card, "AK5385");
 158 }
 159
 160 static void wm8785_registers_init(struct oxygen *chip)
 161 {
 162         struct generic_data *data = chip->model_data;
 163
 164         wm8785_write(chip, WM8785_R7, 0);
 165         wm8785_write(chip, WM8785_R0, data->saved_wm8785_registers[0]);
 166         wm8785_write(chip, WM8785_R1, data->saved_wm8785_registers[1]);
 167 }
 168
 169 static void wm8785_init(struct oxygen *chip)
 170 {
 171         struct generic_data *data = chip->model_data;
 172
 173         data->saved_wm8785_registers[0] = WM8785_MCR_SLAVE |
 174                 WM8785_OSR_SINGLE | WM8785_FORMAT_LJUST;
 175         data->saved_wm8785_registers[1] = WM8785_WL_24;
 176         wm8785_registers_init(chip);
 177         snd_component_add(chip->card, "WM8785");
 178 }
 179
 180 static void generic_init(struct oxygen *chip)
 181 {
 182         ak4396_init(chip);
 183         wm8785_init(chip);
 184 }
 185
 186 static void meridian_init(struct oxygen *chip)
 187 {
 188         ak4396_init(chip);
 189         ak5385_init(chip);
 190 }
 191
 192 static void generic_cleanup(struct oxygen *chip)
 193 {
 194 }
 195
 196 static void generic_resume(struct oxygen *chip)
 197 {
 198         ak4396_registers_init(chip);
 199         wm8785_registers_init(chip);
 200 }
 201
 202 static void set_ak4396_params(struct oxygen *chip,
 203                               struct snd_pcm_hw_params *params)
 204 {
 205         struct generic_data *data = chip->model_data;
 206         unsigned int i;
 207         u8 value;
 208
 209         value = data->ak4396_ctl2 & ~AK4396_DFS_MASK;
 210         if (params_rate(params) <= 54000)
 211                 value |= AK4396_DFS_NORMAL;
 212         else if (params_rate(params) <= 108000)
 213                 value |= AK4396_DFS_DOUBLE;
 214         else
 215                 value |= AK4396_DFS_QUAD;
 216         data->ak4396_ctl2 = value;
 217
 218         msleep(1); /* wait for the new MCLK to become stable */
 219
 220         for (i = 0; i < 4; ++i) {
 221                 ak4396_write(chip, i,
 222                              AK4396_CONTROL_1, AK4396_DIF_24_MSB);
 223                 ak4396_write(chip, i,
 224                              AK4396_CONTROL_2, value);
 225                 ak4396_write(chip, i,
 226                              AK4396_CONTROL_1, AK4396_DIF_24_MSB | AK4396_RSTN);
 227         }
 228 }
 229
 230 static void update_ak4396_mute(struct oxygen *chip)
 231 {
 232         struct generic_data *data = chip->model_data;
 233         unsigned int i;
 234         u8 value;
 235
 236         value = data->ak4396_ctl2 & ~AK4396_SMUTE;
 237         if (chip->dac_mute)
 238                 value |= AK4396_SMUTE;
 239         data->ak4396_ctl2 = value;
 240         for (i = 0; i < 4; ++i)
 241                 ak4396_write(chip, i, AK4396_CONTROL_2, value);
 242 }
 243
 244 static void set_wm8785_params(struct oxygen *chip,
 245                               struct snd_pcm_hw_params *params)
 246 {
 247         unsigned int value;
 248
 249         wm8785_write(chip, WM8785_R7, 0);
 250
 251         value = WM8785_MCR_SLAVE | WM8785_FORMAT_LJUST;
 252         if (params_rate(params) <= 48000)
 253                 value |= WM8785_OSR_SINGLE;
 254         else if (params_rate(params) <= 96000)
 255                 value |= WM8785_OSR_DOUBLE;
 256         else
 257                 value |= WM8785_OSR_QUAD;
 258         wm8785_write(chip, WM8785_R0, value);
 259
 260         if (snd_pcm_format_width(params_format(params)) <= 16)
 261                 value = WM8785_WL_16;
 262         else
 263                 value = WM8785_WL_24;
 264         wm8785_write(chip, WM8785_R1, value);
 265 }
 266
 267 static void set_ak5385_params(struct oxygen *chip,
 268                               struct snd_pcm_hw_params *params)
 269 {
 270         unsigned int value;
 271
 272         if (params_rate(params) <= 54000)
 273                 value = GPIO_AK5385_DFS_NORMAL;
 274         else if (params_rate(params) <= 108000)
 275                 value = GPIO_AK5385_DFS_DOUBLE;
 276         else
 277                 value = GPIO_AK5385_DFS_QUAD;
 278         oxygen_write16_masked(chip, OXYGEN_GPIO_DATA,
 279                               value, GPIO_AK5385_DFS_MASK);
 280 }
 281
 282 static const DECLARE_TLV_DB_LINEAR(ak4396_db_scale, TLV_DB_GAIN_MUTE, 0);
 283
 284 static const struct oxygen_model model_generic = {
 285         .shortname = "C-Media CMI8788",
 286         .longname = "C-Media Oxygen HD Audio",
 287         .chip = "CMI8788",
 288         .owner = THIS_MODULE,
 289         .init = generic_init,
 290         .cleanup = generic_cleanup,
 291         .resume = generic_resume,
 292         .set_dac_params = set_ak4396_params,
 293         .set_adc_params = set_wm8785_params,
 294         .update_dac_volume = update_ak4396_volume,
 295         .update_dac_mute = update_ak4396_mute,
 296         .dac_tlv = ak4396_db_scale,
 297         .model_data_size = sizeof(struct generic_data),
 298         .pcm_dev_cfg = PLAYBACK_0_TO_I2S |
 299                        PLAYBACK_1_TO_SPDIF |
 300                        PLAYBACK_2_TO_AC97_1 |
 301                        CAPTURE_0_FROM_I2S_1 |
 302                        CAPTURE_1_FROM_SPDIF |
 303                        CAPTURE_2_FROM_AC97_1,
 304         .dac_channels = 8,
 305         .dac_volume_min = 0,
 306         .dac_volume_max = 255,
 307         .function_flags = OXYGEN_FUNCTION_SPI |
 308                           OXYGEN_FUNCTION_ENABLE_SPI_4_5,
 309         .dac_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
 310         .adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
 311 };
 312 static const struct oxygen_model model_meridian = {
 313         .shortname = "C-Media CMI8788",
 314         .longname = "C-Media Oxygen HD Audio",
 315         .chip = "CMI8788",
 316         .owner = THIS_MODULE,
 317         .init = meridian_init,
 318         .cleanup = generic_cleanup,
 319         .resume = ak4396_registers_init,
 320         .set_dac_params = set_ak4396_params,
 321         .set_adc_params = set_ak5385_params,
 322         .update_dac_volume = update_ak4396_volume,
 323         .update_dac_mute = update_ak4396_mute,
 324         .dac_tlv = ak4396_db_scale,
 325         .model_data_size = sizeof(struct generic_data),
 326         .pcm_dev_cfg = PLAYBACK_0_TO_I2S |
 327                        PLAYBACK_1_TO_SPDIF |
 328                        PLAYBACK_2_TO_AC97_1 |
 329                        CAPTURE_0_FROM_I2S_2 |
 330                        CAPTURE_1_FROM_SPDIF |
 331                        CAPTURE_2_FROM_AC97_1,
 332         .dac_channels = 8,
 333         .dac_volume_min = 0,
 334         .dac_volume_max = 255,
 335         .misc_flags = OXYGEN_MISC_MIDI,
 336         .function_flags = OXYGEN_FUNCTION_SPI |
 337                           OXYGEN_FUNCTION_ENABLE_SPI_4_5,
 338         .dac_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
 339         .adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
 340 };
 341
 342 static int __devinit generic_oxygen_probe(struct pci_dev *pci,
 343                                           const struct pci_device_id *pci_id)
 344 {
 345         static int dev;
 346         int is_meridian;
 347         int err;
 348
 349         if (dev >= SNDRV_CARDS)
 350                 return -ENODEV;
 351         if (!enable[dev]) {
 352                 ++dev;
 353                 return -ENOENT;
 354         }
 355         is_meridian = pci_id->driver_data;
 356         err = oxygen_pci_probe(pci, index[dev], id[dev],
 357                                is_meridian ? &model_meridian : &model_generic);
 358         if (err >= 0)
 359                 ++dev;
 360         return err;
 361 }
 362
 363 static struct pci_driver oxygen_driver = {
 364         .name = "CMI8788",
 365         .id_table = oxygen_ids,
 366         .probe = generic_oxygen_probe,
 367         .remove = __devexit_p(oxygen_pci_remove),
 368 #ifdef CONFIG_PM
 369         .suspend = oxygen_pci_suspend,
 370         .resume = oxygen_pci_resume,
 371 #endif
 372 };
 373
 374 static int __init alsa_card_oxygen_init(void)
 375 {
 376         return pci_register_driver(&oxygen_driver);
 377 }
 378
 379 static void __exit alsa_card_oxygen_exit(void)
 380 {
 381         pci_unregister_driver(&oxygen_driver);
 382 }
 383
 384 module_init(alsa_card_oxygen_init)
 385 module_exit(alsa_card_oxygen_exit)