sound/pci/bt87x.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * bt87x.c - Brooktree Bt878/Bt879 driver for ALSA
   4  *
   5  * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
   6  *
   7  * based on btaudio.c by Gerd Knorr <kraxel@bytesex.org>
   8  */
   9
  10 #include <linux/init.h>
  11 #include <linux/interrupt.h>
  12 #include <linux/pci.h>
  13 #include <linux/slab.h>
  14 #include <linux/module.h>
  15 #include <linux/bitops.h>
  16 #include <linux/io.h>
  17 #include <sound/core.h>
  18 #include <sound/pcm.h>
  19 #include <sound/pcm_params.h>
  20 #include <sound/control.h>
  21 #include <sound/initval.h>
  22
  23 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
  24 MODULE_DESCRIPTION("Brooktree Bt87x audio driver");
  25 MODULE_LICENSE("GPL");
  26 MODULE_SUPPORTED_DEVICE("{{Brooktree,Bt878},"
  27                 "{Brooktree,Bt879}}");
  28
  29 static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */
  30 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  31 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable this card */
  32 static int digital_rate[SNDRV_CARDS];   /* digital input rate */
  33 static bool load_all;   /* allow to load the non-whitelisted cards */
  34
  35 module_param_array(index, int, NULL, 0444);
  36 MODULE_PARM_DESC(index, "Index value for Bt87x soundcard");
  37 module_param_array(id, charp, NULL, 0444);
  38 MODULE_PARM_DESC(id, "ID string for Bt87x soundcard");
  39 module_param_array(enable, bool, NULL, 0444);
  40 MODULE_PARM_DESC(enable, "Enable Bt87x soundcard");
  41 module_param_array(digital_rate, int, NULL, 0444);
  42 MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard");
  43 module_param(load_all, bool, 0444);
  44 MODULE_PARM_DESC(load_all, "Allow to load the non-whitelisted cards");
  45
  46
  47 /* register offsets */
  48 #define REG_INT_STAT            0x100   /* interrupt status */
  49 #define REG_INT_MASK            0x104   /* interrupt mask */
  50 #define REG_GPIO_DMA_CTL        0x10c   /* audio control */
  51 #define REG_PACKET_LEN          0x110   /* audio packet lengths */
  52 #define REG_RISC_STRT_ADD       0x114   /* RISC program start address */
  53 #define REG_RISC_COUNT          0x120   /* RISC program counter */
  54
  55 /* interrupt bits */
  56 #define INT_OFLOW       (1 <<  3)       /* audio A/D overflow */
  57 #define INT_RISCI       (1 << 11)       /* RISC instruction IRQ bit set */
  58 #define INT_FBUS        (1 << 12)       /* FIFO overrun due to bus access latency */
  59 #define INT_FTRGT       (1 << 13)       /* FIFO overrun due to target latency */
  60 #define INT_FDSR        (1 << 14)       /* FIFO data stream resynchronization */
  61 #define INT_PPERR       (1 << 15)       /* PCI parity error */
  62 #define INT_RIPERR      (1 << 16)       /* RISC instruction parity error */
  63 #define INT_PABORT      (1 << 17)       /* PCI master or target abort */
  64 #define INT_OCERR       (1 << 18)       /* invalid opcode */
  65 #define INT_SCERR       (1 << 19)       /* sync counter overflow */
  66 #define INT_RISC_EN     (1 << 27)       /* DMA controller running */
  67 #define INT_RISCS_SHIFT       28        /* RISC status bits */
  68
  69 /* audio control bits */
  70 #define CTL_FIFO_ENABLE         (1 <<  0)       /* enable audio data FIFO */
  71 #define CTL_RISC_ENABLE         (1 <<  1)       /* enable audio DMA controller */
  72 #define CTL_PKTP_4              (0 <<  2)       /* packet mode FIFO trigger point - 4 DWORDs */
  73 #define CTL_PKTP_8              (1 <<  2)       /* 8 DWORDs */
  74 #define CTL_PKTP_16             (2 <<  2)       /* 16 DWORDs */
  75 #define CTL_ACAP_EN             (1 <<  4)       /* enable audio capture */
  76 #define CTL_DA_APP              (1 <<  5)       /* GPIO input */
  77 #define CTL_DA_IOM_AFE          (0 <<  6)       /* audio A/D input */
  78 #define CTL_DA_IOM_DA           (1 <<  6)       /* digital audio input */
  79 #define CTL_DA_SDR_SHIFT               8        /* DDF first stage decimation rate */
  80 #define CTL_DA_SDR_MASK         (0xf<< 8)
  81 #define CTL_DA_LMT              (1 << 12)       /* limit audio data values */
  82 #define CTL_DA_ES2              (1 << 13)       /* enable DDF stage 2 */
  83 #define CTL_DA_SBR              (1 << 14)       /* samples rounded to 8 bits */
  84 #define CTL_DA_DPM              (1 << 15)       /* data packet mode */
  85 #define CTL_DA_LRD_SHIFT              16        /* ALRCK delay */
  86 #define CTL_DA_MLB              (1 << 21)       /* MSB/LSB format */
  87 #define CTL_DA_LRI              (1 << 22)       /* left/right indication */
  88 #define CTL_DA_SCE              (1 << 23)       /* sample clock edge */
  89 #define CTL_A_SEL_STV           (0 << 24)       /* TV tuner audio input */
  90 #define CTL_A_SEL_SFM           (1 << 24)       /* FM audio input */
  91 #define CTL_A_SEL_SML           (2 << 24)       /* mic/line audio input */
  92 #define CTL_A_SEL_SMXC          (3 << 24)       /* MUX bypass */
  93 #define CTL_A_SEL_SHIFT               24
  94 #define CTL_A_SEL_MASK          (3 << 24)
  95 #define CTL_A_PWRDN             (1 << 26)       /* analog audio power-down */
  96 #define CTL_A_G2X               (1 << 27)       /* audio gain boost */
  97 #define CTL_A_GAIN_SHIFT              28        /* audio input gain */
  98 #define CTL_A_GAIN_MASK         (0xf<<28)
  99
 100 /* RISC instruction opcodes */
 101 #define RISC_WRITE      (0x1 << 28)     /* write FIFO data to memory at address */
 102 #define RISC_WRITEC     (0x5 << 28)     /* write FIFO data to memory at current address */
 103 #define RISC_SKIP       (0x2 << 28)     /* skip FIFO data */
 104 #define RISC_JUMP       (0x7 << 28)     /* jump to address */
 105 #define RISC_SYNC       (0x8 << 28)     /* synchronize with FIFO */
 106
 107 /* RISC instruction bits */
 108 #define RISC_BYTES_ENABLE       (0xf << 12)     /* byte enable bits */
 109 #define RISC_RESYNC             (  1 << 15)     /* disable FDSR errors */
 110 #define RISC_SET_STATUS_SHIFT           16      /* set status bits */
 111 #define RISC_RESET_STATUS_SHIFT         20      /* clear status bits */
 112 #define RISC_IRQ                (  1 << 24)     /* interrupt */
 113 #define RISC_EOL                (  1 << 26)     /* end of line */
 114 #define RISC_SOL                (  1 << 27)     /* start of line */
 115
 116 /* SYNC status bits values */
 117 #define RISC_SYNC_FM1   0x6
 118 #define RISC_SYNC_VRO   0xc
 119
 120 #define ANALOG_CLOCK 1792000
 121 #ifdef CONFIG_SND_BT87X_OVERCLOCK
 122 #define CLOCK_DIV_MIN 1
 123 #else
 124 #define CLOCK_DIV_MIN 4
 125 #endif
 126 #define CLOCK_DIV_MAX 15
 127
 128 #define ERROR_INTERRUPTS (INT_FBUS | INT_FTRGT | INT_PPERR | \
 129                           INT_RIPERR | INT_PABORT | INT_OCERR)
 130 #define MY_INTERRUPTS (INT_RISCI | ERROR_INTERRUPTS)
 131
 132 /* SYNC, one WRITE per line, one extra WRITE per page boundary, SYNC, JUMP */
 133 #define MAX_RISC_SIZE ((1 + 255 + (PAGE_ALIGN(255 * 4092) / PAGE_SIZE - 1) + 1 + 1) * 8)
 134
 135 /* Cards with configuration information */
 136 enum snd_bt87x_boardid {
 137         SND_BT87X_BOARD_UNKNOWN,
 138         SND_BT87X_BOARD_GENERIC,        /* both an & dig interfaces, 32kHz */
 139         SND_BT87X_BOARD_ANALOG,         /* board with no external A/D */
 140         SND_BT87X_BOARD_OSPREY2x0,
 141         SND_BT87X_BOARD_OSPREY440,
 142         SND_BT87X_BOARD_AVPHONE98,
 143 };
 144
 145 /* Card configuration */
 146 struct snd_bt87x_board {
 147         int dig_rate;           /* Digital input sampling rate */
 148         u32 digital_fmt;        /* Register settings for digital input */
 149         unsigned no_analog:1;   /* No analog input */
 150         unsigned no_digital:1;  /* No digital input */
 151 };
 152
 153 static struct snd_bt87x_board snd_bt87x_boards[] = {
 154         [SND_BT87X_BOARD_UNKNOWN] = {
 155                 .dig_rate = 32000, /* just a guess */
 156         },
 157         [SND_BT87X_BOARD_GENERIC] = {
 158                 .dig_rate = 32000,
 159         },
 160         [SND_BT87X_BOARD_ANALOG] = {
 161                 .no_digital = 1,
 162         },
 163         [SND_BT87X_BOARD_OSPREY2x0] = {
 164                 .dig_rate = 44100,
 165                 .digital_fmt = CTL_DA_LRI | (1 << CTL_DA_LRD_SHIFT),
 166         },
 167         [SND_BT87X_BOARD_OSPREY440] = {
 168                 .dig_rate = 32000,
 169                 .digital_fmt = CTL_DA_LRI | (1 << CTL_DA_LRD_SHIFT),
 170                 .no_analog = 1,
 171         },
 172         [SND_BT87X_BOARD_AVPHONE98] = {
 173                 .dig_rate = 48000,
 174         },
 175 };
 176
 177 struct snd_bt87x {
 178         struct snd_card *card;
 179         struct pci_dev *pci;
 180         struct snd_bt87x_board board;
 181
 182         void __iomem *mmio;
 183         int irq;
 184
 185         spinlock_t reg_lock;
 186         unsigned long opened;
 187         struct snd_pcm_substream *substream;
 188
 189         struct snd_dma_buffer dma_risc;
 190         unsigned int line_bytes;
 191         unsigned int lines;
 192
 193         u32 reg_control;
 194         u32 interrupt_mask;
 195
 196         int current_line;
 197
 198         int pci_parity_errors;
 199 };
 200
 201 enum { DEVICE_DIGITAL, DEVICE_ANALOG };
 202
 203 static inline u32 snd_bt87x_readl(struct snd_bt87x *chip, u32 reg)
 204 {
 205         return readl(chip->mmio + reg);
 206 }
 207
 208 static inline void snd_bt87x_writel(struct snd_bt87x *chip, u32 reg, u32 value)
 209 {
 210         writel(value, chip->mmio + reg);
 211 }
 212
 213 static int snd_bt87x_create_risc(struct snd_bt87x *chip, struct snd_pcm_substream *substream,
 214                                  unsigned int periods, unsigned int period_bytes)
 215 {
 216         unsigned int i, offset;
 217         __le32 *risc;
 218
 219         if (chip->dma_risc.area == NULL) {
 220                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 221                                         PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
 222                         return -ENOMEM;
 223         }
 224         risc = (__le32 *)chip->dma_risc.area;
 225         offset = 0;
 226         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
 227         *risc++ = cpu_to_le32(0);
 228         for (i = 0; i < periods; ++i) {
 229                 u32 rest;
 230
 231                 rest = period_bytes;
 232                 do {
 233                         u32 cmd, len;
 234                         unsigned int addr;
 235
 236                         len = PAGE_SIZE - (offset % PAGE_SIZE);
 237                         if (len > rest)
 238                                 len = rest;
 239                         cmd = RISC_WRITE | len;
 240                         if (rest == period_bytes) {
 241                                 u32 block = i * 16 / periods;
 242                                 cmd |= RISC_SOL;
 243                                 cmd |= block << RISC_SET_STATUS_SHIFT;
 244                                 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
 245                         }
 246                         if (len == rest)
 247                                 cmd |= RISC_EOL | RISC_IRQ;
 248                         *risc++ = cpu_to_le32(cmd);
 249                         addr = snd_pcm_sgbuf_get_addr(substream, offset);
 250                         *risc++ = cpu_to_le32(addr);
 251                         offset += len;
 252                         rest -= len;
 253                 } while (rest > 0);
 254         }
 255         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
 256         *risc++ = cpu_to_le32(0);
 257         *risc++ = cpu_to_le32(RISC_JUMP);
 258         *risc++ = cpu_to_le32(chip->dma_risc.addr);
 259         chip->line_bytes = period_bytes;
 260         chip->lines = periods;
 261         return 0;
 262 }
 263
 264 static void snd_bt87x_free_risc(struct snd_bt87x *chip)
 265 {
 266         if (chip->dma_risc.area) {
 267                 snd_dma_free_pages(&chip->dma_risc);
 268                 chip->dma_risc.area = NULL;
 269         }
 270 }
 271
 272 static void snd_bt87x_pci_error(struct snd_bt87x *chip, unsigned int status)
 273 {
 274         u16 pci_status;
 275
 276         pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
 277         pci_status &= PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
 278                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
 279                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY;
 280         pci_write_config_word(chip->pci, PCI_STATUS, pci_status);
 281         if (pci_status != PCI_STATUS_DETECTED_PARITY)
 282                 dev_err(chip->card->dev,
 283                         "Aieee - PCI error! status %#08x, PCI status %#04x\n",
 284                            status & ERROR_INTERRUPTS, pci_status);
 285         else {
 286                 dev_err(chip->card->dev,
 287                         "Aieee - PCI parity error detected!\n");
 288                 /* error 'handling' similar to aic7xxx_pci.c: */
 289                 chip->pci_parity_errors++;
 290                 if (chip->pci_parity_errors > 20) {
 291                         dev_err(chip->card->dev,
 292                                 "Too many PCI parity errors observed.\n");
 293                         dev_err(chip->card->dev,
 294                                 "Some device on this bus is generating bad parity.\n");
 295                         dev_err(chip->card->dev,
 296                                 "This is an error *observed by*, not *generated by*, this card.\n");
 297                         dev_err(chip->card->dev,
 298                                 "PCI parity error checking has been disabled.\n");
 299                         chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR);
 300                         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
 301                 }
 302         }
 303 }
 304
 305 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id)
 306 {
 307         struct snd_bt87x *chip = dev_id;
 308         unsigned int status, irq_status;
 309
 310         status = snd_bt87x_readl(chip, REG_INT_STAT);
 311         irq_status = status & chip->interrupt_mask;
 312         if (!irq_status)
 313                 return IRQ_NONE;
 314         snd_bt87x_writel(chip, REG_INT_STAT, irq_status);
 315
 316         if (irq_status & ERROR_INTERRUPTS) {
 317                 if (irq_status & (INT_FBUS | INT_FTRGT))
 318                         dev_warn(chip->card->dev,
 319                                  "FIFO overrun, status %#08x\n", status);
 320                 if (irq_status & INT_OCERR)
 321                         dev_err(chip->card->dev,
 322                                 "internal RISC error, status %#08x\n", status);
 323                 if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT))
 324                         snd_bt87x_pci_error(chip, irq_status);
 325         }
 326         if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) {
 327                 int current_block, irq_block;
 328
 329                 /* assume that exactly one line has been recorded */
 330                 chip->current_line = (chip->current_line + 1) % chip->lines;
 331                 /* but check if some interrupts have been skipped */
 332                 current_block = chip->current_line * 16 / chip->lines;
 333                 irq_block = status >> INT_RISCS_SHIFT;
 334                 if (current_block != irq_block)
 335                         chip->current_line = (irq_block * chip->lines + 15) / 16;
 336
 337                 snd_pcm_period_elapsed(chip->substream);
 338         }
 339         return IRQ_HANDLED;
 340 }
 341
 342 static const struct snd_pcm_hardware snd_bt87x_digital_hw = {
 343         .info = SNDRV_PCM_INFO_MMAP |
 344                 SNDRV_PCM_INFO_INTERLEAVED |
 345                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 346                 SNDRV_PCM_INFO_MMAP_VALID |
 347                 SNDRV_PCM_INFO_BATCH,
 348         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 349         .rates = 0, /* set at runtime */
 350         .channels_min = 2,
 351         .channels_max = 2,
 352         .buffer_bytes_max = 255 * 4092,
 353         .period_bytes_min = 32,
 354         .period_bytes_max = 4092,
 355         .periods_min = 2,
 356         .periods_max = 255,
 357 };
 358
 359 static const struct snd_pcm_hardware snd_bt87x_analog_hw = {
 360         .info = SNDRV_PCM_INFO_MMAP |
 361                 SNDRV_PCM_INFO_INTERLEAVED |
 362                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 363                 SNDRV_PCM_INFO_MMAP_VALID |
 364                 SNDRV_PCM_INFO_BATCH,
 365         .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
 366         .rates = SNDRV_PCM_RATE_KNOT,
 367         .rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX,
 368         .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN,
 369         .channels_min = 1,
 370         .channels_max = 1,
 371         .buffer_bytes_max = 255 * 4092,
 372         .period_bytes_min = 32,
 373         .period_bytes_max = 4092,
 374         .periods_min = 2,
 375         .periods_max = 255,
 376 };
 377
 378 static int snd_bt87x_set_digital_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
 379 {
 380         chip->reg_control |= CTL_DA_IOM_DA | CTL_A_PWRDN;
 381         runtime->hw = snd_bt87x_digital_hw;
 382         runtime->hw.rates = snd_pcm_rate_to_rate_bit(chip->board.dig_rate);
 383         runtime->hw.rate_min = chip->board.dig_rate;
 384         runtime->hw.rate_max = chip->board.dig_rate;
 385         return 0;
 386 }
 387
 388 static int snd_bt87x_set_analog_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
 389 {
 390         static const struct snd_ratnum analog_clock = {
 391                 .num = ANALOG_CLOCK,
 392                 .den_min = CLOCK_DIV_MIN,
 393                 .den_max = CLOCK_DIV_MAX,
 394                 .den_step = 1
 395         };
 396         static const struct snd_pcm_hw_constraint_ratnums constraint_rates = {
 397                 .nrats = 1,
 398                 .rats = &analog_clock
 399         };
 400
 401         chip->reg_control &= ~(CTL_DA_IOM_DA | CTL_A_PWRDN);
 402         runtime->hw = snd_bt87x_analog_hw;
 403         return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 404                                              &constraint_rates);
 405 }
 406
 407 static int snd_bt87x_pcm_open(struct snd_pcm_substream *substream)
 408 {
 409         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 410         struct snd_pcm_runtime *runtime = substream->runtime;
 411         int err;
 412
 413         if (test_and_set_bit(0, &chip->opened))
 414                 return -EBUSY;
 415
 416         if (substream->pcm->device == DEVICE_DIGITAL)
 417                 err = snd_bt87x_set_digital_hw(chip, runtime);
 418         else
 419                 err = snd_bt87x_set_analog_hw(chip, runtime);
 420         if (err < 0)
 421                 goto _error;
 422
 423         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
 424         if (err < 0)
 425                 goto _error;
 426
 427         chip->substream = substream;
 428         return 0;
 429
 430 _error:
 431         clear_bit(0, &chip->opened);
 432         smp_mb__after_atomic();
 433         return err;
 434 }
 435
 436 static int snd_bt87x_close(struct snd_pcm_substream *substream)
 437 {
 438         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 439
 440         spin_lock_irq(&chip->reg_lock);
 441         chip->reg_control |= CTL_A_PWRDN;
 442         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 443         spin_unlock_irq(&chip->reg_lock);
 444
 445         chip->substream = NULL;
 446         clear_bit(0, &chip->opened);
 447         smp_mb__after_atomic();
 448         return 0;
 449 }
 450
 451 static int snd_bt87x_hw_params(struct snd_pcm_substream *substream,
 452                                struct snd_pcm_hw_params *hw_params)
 453 {
 454         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 455         int err;
 456
 457         err = snd_pcm_lib_malloc_pages(substream,
 458                                        params_buffer_bytes(hw_params));
 459         if (err < 0)
 460                 return err;
 461         return snd_bt87x_create_risc(chip, substream,
 462                                      params_periods(hw_params),
 463                                      params_period_bytes(hw_params));
 464 }
 465
 466 static int snd_bt87x_hw_free(struct snd_pcm_substream *substream)
 467 {
 468         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 469
 470         snd_bt87x_free_risc(chip);
 471         snd_pcm_lib_free_pages(substream);
 472         return 0;
 473 }
 474
 475 static int snd_bt87x_prepare(struct snd_pcm_substream *substream)
 476 {
 477         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 478         struct snd_pcm_runtime *runtime = substream->runtime;
 479         int decimation;
 480
 481         spin_lock_irq(&chip->reg_lock);
 482         chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
 483         decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
 484         chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
 485         if (runtime->format == SNDRV_PCM_FORMAT_S8)
 486                 chip->reg_control |= CTL_DA_SBR;
 487         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 488         spin_unlock_irq(&chip->reg_lock);
 489         return 0;
 490 }
 491
 492 static int snd_bt87x_start(struct snd_bt87x *chip)
 493 {
 494         spin_lock(&chip->reg_lock);
 495         chip->current_line = 0;
 496         chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
 497         snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
 498         snd_bt87x_writel(chip, REG_PACKET_LEN,
 499                          chip->line_bytes | (chip->lines << 16));
 500         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
 501         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 502         spin_unlock(&chip->reg_lock);
 503         return 0;
 504 }
 505
 506 static int snd_bt87x_stop(struct snd_bt87x *chip)
 507 {
 508         spin_lock(&chip->reg_lock);
 509         chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
 510         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 511         snd_bt87x_writel(chip, REG_INT_MASK, 0);
 512         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
 513         spin_unlock(&chip->reg_lock);
 514         return 0;
 515 }
 516
 517 static int snd_bt87x_trigger(struct snd_pcm_substream *substream, int cmd)
 518 {
 519         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 520
 521         switch (cmd) {
 522         case SNDRV_PCM_TRIGGER_START:
 523                 return snd_bt87x_start(chip);
 524         case SNDRV_PCM_TRIGGER_STOP:
 525                 return snd_bt87x_stop(chip);
 526         default:
 527                 return -EINVAL;
 528         }
 529 }
 530
 531 static snd_pcm_uframes_t snd_bt87x_pointer(struct snd_pcm_substream *substream)
 532 {
 533         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 534         struct snd_pcm_runtime *runtime = substream->runtime;
 535
 536         return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
 537 }
 538
 539 static const struct snd_pcm_ops snd_bt87x_pcm_ops = {
 540         .open = snd_bt87x_pcm_open,
 541         .close = snd_bt87x_close,
 542         .ioctl = snd_pcm_lib_ioctl,
 543         .hw_params = snd_bt87x_hw_params,
 544         .hw_free = snd_bt87x_hw_free,
 545         .prepare = snd_bt87x_prepare,
 546         .trigger = snd_bt87x_trigger,
 547         .pointer = snd_bt87x_pointer,
 548 };
 549
 550 static int snd_bt87x_capture_volume_info(struct snd_kcontrol *kcontrol,
 551                                          struct snd_ctl_elem_info *info)
 552 {
 553         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 554         info->count = 1;
 555         info->value.integer.min = 0;
 556         info->value.integer.max = 15;
 557         return 0;
 558 }
 559
 560 static int snd_bt87x_capture_volume_get(struct snd_kcontrol *kcontrol,
 561                                         struct snd_ctl_elem_value *value)
 562 {
 563         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 564
 565         value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
 566         return 0;
 567 }
 568
 569 static int snd_bt87x_capture_volume_put(struct snd_kcontrol *kcontrol,
 570                                         struct snd_ctl_elem_value *value)
 571 {
 572         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 573         u32 old_control;
 574         int changed;
 575
 576         spin_lock_irq(&chip->reg_lock);
 577         old_control = chip->reg_control;
 578         chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
 579                 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
 580         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 581         changed = old_control != chip->reg_control;
 582         spin_unlock_irq(&chip->reg_lock);
 583         return changed;
 584 }
 585
 586 static const struct snd_kcontrol_new snd_bt87x_capture_volume = {
 587         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 588         .name = "Capture Volume",
 589         .info = snd_bt87x_capture_volume_info,
 590         .get = snd_bt87x_capture_volume_get,
 591         .put = snd_bt87x_capture_volume_put,
 592 };
 593
 594 #define snd_bt87x_capture_boost_info    snd_ctl_boolean_mono_info
 595
 596 static int snd_bt87x_capture_boost_get(struct snd_kcontrol *kcontrol,
 597                                        struct snd_ctl_elem_value *value)
 598 {
 599         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 600
 601         value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
 602         return 0;
 603 }
 604
 605 static int snd_bt87x_capture_boost_put(struct snd_kcontrol *kcontrol,
 606                                        struct snd_ctl_elem_value *value)
 607 {
 608         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 609         u32 old_control;
 610         int changed;
 611
 612         spin_lock_irq(&chip->reg_lock);
 613         old_control = chip->reg_control;
 614         chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
 615                 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
 616         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 617         changed = chip->reg_control != old_control;
 618         spin_unlock_irq(&chip->reg_lock);
 619         return changed;
 620 }
 621
 622 static const struct snd_kcontrol_new snd_bt87x_capture_boost = {
 623         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 624         .name = "Capture Boost",
 625         .info = snd_bt87x_capture_boost_info,
 626         .get = snd_bt87x_capture_boost_get,
 627         .put = snd_bt87x_capture_boost_put,
 628 };
 629
 630 static int snd_bt87x_capture_source_info(struct snd_kcontrol *kcontrol,
 631                                          struct snd_ctl_elem_info *info)
 632 {
 633         static const char *const texts[3] = {"TV Tuner", "FM", "Mic/Line"};
 634
 635         return snd_ctl_enum_info(info, 1, 3, texts);
 636 }
 637
 638 static int snd_bt87x_capture_source_get(struct snd_kcontrol *kcontrol,
 639                                         struct snd_ctl_elem_value *value)
 640 {
 641         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 642
 643         value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
 644         return 0;
 645 }
 646
 647 static int snd_bt87x_capture_source_put(struct snd_kcontrol *kcontrol,
 648                                         struct snd_ctl_elem_value *value)
 649 {
 650         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 651         u32 old_control;
 652         int changed;
 653
 654         spin_lock_irq(&chip->reg_lock);
 655         old_control = chip->reg_control;
 656         chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
 657                 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
 658         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 659         changed = chip->reg_control != old_control;
 660         spin_unlock_irq(&chip->reg_lock);
 661         return changed;
 662 }
 663
 664 static const struct snd_kcontrol_new snd_bt87x_capture_source = {
 665         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 666         .name = "Capture Source",
 667         .info = snd_bt87x_capture_source_info,
 668         .get = snd_bt87x_capture_source_get,
 669         .put = snd_bt87x_capture_source_put,
 670 };
 671
 672 static int snd_bt87x_free(struct snd_bt87x *chip)
 673 {
 674         if (chip->mmio)
 675                 snd_bt87x_stop(chip);
 676         if (chip->irq >= 0)
 677                 free_irq(chip->irq, chip);
 678         iounmap(chip->mmio);
 679         pci_release_regions(chip->pci);
 680         pci_disable_device(chip->pci);
 681         kfree(chip);
 682         return 0;
 683 }
 684
 685 static int snd_bt87x_dev_free(struct snd_device *device)
 686 {
 687         struct snd_bt87x *chip = device->device_data;
 688         return snd_bt87x_free(chip);
 689 }
 690
 691 static int snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name)
 692 {
 693         int err;
 694         struct snd_pcm *pcm;
 695
 696         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
 697         if (err < 0)
 698                 return err;
 699         pcm->private_data = chip;
 700         strcpy(pcm->name, name);
 701         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
 702         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
 703                                               snd_dma_pci_data(chip->pci),
 704                                               128 * 1024,
 705                                               ALIGN(255 * 4092, 1024));
 706         return 0;
 707 }
 708
 709 static int snd_bt87x_create(struct snd_card *card,
 710                             struct pci_dev *pci,
 711                             struct snd_bt87x **rchip)
 712 {
 713         struct snd_bt87x *chip;
 714         int err;
 715         static struct snd_device_ops ops = {
 716                 .dev_free = snd_bt87x_dev_free
 717         };
 718
 719         *rchip = NULL;
 720
 721         err = pci_enable_device(pci);
 722         if (err < 0)
 723                 return err;
 724
 725         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 726         if (!chip) {
 727                 pci_disable_device(pci);
 728                 return -ENOMEM;
 729         }
 730         chip->card = card;
 731         chip->pci = pci;
 732         chip->irq = -1;
 733         spin_lock_init(&chip->reg_lock);
 734
 735         if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
 736                 kfree(chip);
 737                 pci_disable_device(pci);
 738                 return err;
 739         }
 740         chip->mmio = pci_ioremap_bar(pci, 0);
 741         if (!chip->mmio) {
 742                 dev_err(card->dev, "cannot remap io memory\n");
 743                 err = -ENOMEM;
 744                 goto fail;
 745         }
 746
 747         chip->reg_control = CTL_A_PWRDN | CTL_DA_ES2 |
 748                             CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
 749         chip->interrupt_mask = MY_INTERRUPTS;
 750         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 751         snd_bt87x_writel(chip, REG_INT_MASK, 0);
 752         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
 753
 754         err = request_irq(pci->irq, snd_bt87x_interrupt, IRQF_SHARED,
 755                           KBUILD_MODNAME, chip);
 756         if (err < 0) {
 757                 dev_err(card->dev, "cannot grab irq %d\n", pci->irq);
 758                 goto fail;
 759         }
 760         chip->irq = pci->irq;
 761         pci_set_master(pci);
 762         synchronize_irq(chip->irq);
 763
 764         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 765         if (err < 0)
 766                 goto fail;
 767
 768         *rchip = chip;
 769         return 0;
 770
 771 fail:
 772         snd_bt87x_free(chip);
 773         return err;
 774 }
 775
 776 #define BT_DEVICE(chip, subvend, subdev, id) \
 777         { .vendor = PCI_VENDOR_ID_BROOKTREE, \
 778           .device = chip, \
 779           .subvendor = subvend, .subdevice = subdev, \
 780           .driver_data = SND_BT87X_BOARD_ ## id }
 781 /* driver_data is the card id for that device */
 782
 783 static const struct pci_device_id snd_bt87x_ids[] = {
 784         /* Hauppauge WinTV series */
 785         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, GENERIC),
 786         /* Hauppauge WinTV series */
 787         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, GENERIC),
 788         /* Viewcast Osprey 200 */
 789         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, OSPREY2x0),
 790         /* Viewcast Osprey 440 (rate is configurable via gpio) */
 791         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff07, OSPREY440),
 792         /* ATI TV-Wonder */
 793         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1002, 0x0001, GENERIC),
 794         /* Leadtek Winfast tv 2000xp delux */
 795         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x107d, 0x6606, GENERIC),
 796         /* Pinnacle PCTV */
 797         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x11bd, 0x0012, GENERIC),
 798         /* Voodoo TV 200 */
 799         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x121a, 0x3000, GENERIC),
 800         /* Askey Computer Corp. MagicTView'99 */
 801         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x144f, 0x3000, GENERIC),
 802         /* AVerMedia Studio No. 103, 203, ...? */
 803         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1461, 0x0003, AVPHONE98),
 804         /* Prolink PixelView PV-M4900 */
 805         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1554, 0x4011, GENERIC),
 806         /* Pinnacle  Studio PCTV rave */
 807         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0xbd11, 0x1200, GENERIC),
 808         { }
 809 };
 810 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
 811
 812 /* cards known not to have audio
 813  * (DVB cards use the audio function to transfer MPEG data) */
 814 static struct {
 815         unsigned short subvendor, subdevice;
 816 } blacklist[] = {
 817         {0x0071, 0x0101}, /* Nebula Electronics DigiTV */
 818         {0x11bd, 0x001c}, /* Pinnacle PCTV Sat */
 819         {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
 820         {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */
 821         {0x1461, 0x0771}, /* AVermedia DVB-T 771 */
 822         {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */
 823         {0x18ac, 0xd500}, /* DVICO FusionHDTV 5 Lite */
 824         {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */
 825         {0x18ac, 0xdb11}, /* Ultraview DVB-T Lite */
 826         {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */
 827         {0x7063, 0x2000}, /* pcHDTV HD-2000 TV */
 828 };
 829
 830 static struct pci_driver driver;
 831
 832 /* return the id of the card, or a negative value if it's blacklisted */
 833 static int snd_bt87x_detect_card(struct pci_dev *pci)
 834 {
 835         int i;
 836         const struct pci_device_id *supported;
 837
 838         supported = pci_match_id(snd_bt87x_ids, pci);
 839         if (supported && supported->driver_data > 0)
 840                 return supported->driver_data;
 841
 842         for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
 843                 if (blacklist[i].subvendor == pci->subsystem_vendor &&
 844                     blacklist[i].subdevice == pci->subsystem_device) {
 845                         dev_dbg(&pci->dev,
 846                                 "card %#04x-%#04x:%#04x has no audio\n",
 847                                     pci->device, pci->subsystem_vendor, pci->subsystem_device);
 848                         return -EBUSY;
 849                 }
 850
 851         dev_info(&pci->dev, "unknown card %#04x-%#04x:%#04x\n",
 852                    pci->device, pci->subsystem_vendor, pci->subsystem_device);
 853         dev_info(&pci->dev, "please mail id, board name, and, "
 854                    "if it works, the correct digital_rate option to "
 855                    "<alsa-devel@alsa-project.org>\n");
 856         return SND_BT87X_BOARD_UNKNOWN;
 857 }
 858
 859 static int snd_bt87x_probe(struct pci_dev *pci,
 860                            const struct pci_device_id *pci_id)
 861 {
 862         static int dev;
 863         struct snd_card *card;
 864         struct snd_bt87x *chip;
 865         int err;
 866         enum snd_bt87x_boardid boardid;
 867
 868         if (!pci_id->driver_data) {
 869                 err = snd_bt87x_detect_card(pci);
 870                 if (err < 0)
 871                         return -ENODEV;
 872                 boardid = err;
 873         } else
 874                 boardid = pci_id->driver_data;
 875
 876         if (dev >= SNDRV_CARDS)
 877                 return -ENODEV;
 878         if (!enable[dev]) {
 879                 ++dev;
 880                 return -ENOENT;
 881         }
 882
 883         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
 884                            0, &card);
 885         if (err < 0)
 886                 return err;
 887
 888         err = snd_bt87x_create(card, pci, &chip);
 889         if (err < 0)
 890                 goto _error;
 891
 892         memcpy(&chip->board, &snd_bt87x_boards[boardid], sizeof(chip->board));
 893
 894         if (!chip->board.no_digital) {
 895                 if (digital_rate[dev] > 0)
 896                         chip->board.dig_rate = digital_rate[dev];
 897
 898                 chip->reg_control |= chip->board.digital_fmt;
 899
 900                 err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
 901                 if (err < 0)
 902                         goto _error;
 903         }
 904         if (!chip->board.no_analog) {
 905                 err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
 906                 if (err < 0)
 907                         goto _error;
 908                 err = snd_ctl_add(card, snd_ctl_new1(
 909                                   &snd_bt87x_capture_volume, chip));
 910                 if (err < 0)
 911                         goto _error;
 912                 err = snd_ctl_add(card, snd_ctl_new1(
 913                                   &snd_bt87x_capture_boost, chip));
 914                 if (err < 0)
 915                         goto _error;
 916                 err = snd_ctl_add(card, snd_ctl_new1(
 917                                   &snd_bt87x_capture_source, chip));
 918                 if (err < 0)
 919                         goto _error;
 920         }
 921         dev_info(card->dev, "bt87x%d: Using board %d, %sanalog, %sdigital "
 922                    "(rate %d Hz)\n", dev, boardid,
 923                    chip->board.no_analog ? "no " : "",
 924                    chip->board.no_digital ? "no " : "", chip->board.dig_rate);
 925
 926         strcpy(card->driver, "Bt87x");
 927         sprintf(card->shortname, "Brooktree Bt%x", pci->device);
 928         sprintf(card->longname, "%s at %#llx, irq %i",
 929                 card->shortname, (unsigned long long)pci_resource_start(pci, 0),
 930                 chip->irq);
 931         strcpy(card->mixername, "Bt87x");
 932
 933         err = snd_card_register(card);
 934         if (err < 0)
 935                 goto _error;
 936
 937         pci_set_drvdata(pci, card);
 938         ++dev;
 939         return 0;
 940
 941 _error:
 942         snd_card_free(card);
 943         return err;
 944 }
 945
 946 static void snd_bt87x_remove(struct pci_dev *pci)
 947 {
 948         snd_card_free(pci_get_drvdata(pci));
 949 }
 950
 951 /* default entries for all Bt87x cards - it's not exported */
 952 /* driver_data is set to 0 to call detection */
 953 static const struct pci_device_id snd_bt87x_default_ids[] = {
 954         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN),
 955         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN),
 956         { }
 957 };
 958
 959 static struct pci_driver driver = {
 960         .name = KBUILD_MODNAME,
 961         .id_table = snd_bt87x_ids,
 962         .probe = snd_bt87x_probe,
 963         .remove = snd_bt87x_remove,
 964 };
 965
 966 static int __init alsa_card_bt87x_init(void)
 967 {
 968         if (load_all)
 969                 driver.id_table = snd_bt87x_default_ids;
 970         return pci_register_driver(&driver);
 971 }
 972
 973 static void __exit alsa_card_bt87x_exit(void)
 974 {
 975         pci_unregister_driver(&driver);
 976 }
 977
 978 module_init(alsa_card_bt87x_init)
 979 module_exit(alsa_card_bt87x_exit)