git.oblomov.eu Git - linux-2.6/blob - sound/pci/bt87x.c

   1 /*
   2  * bt87x.c - Brooktree Bt878/Bt879 driver for ALSA
   3  *
   4  * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
   5  *
   6  * based on btaudio.c by Gerd Knorr <kraxel@bytesex.org>
   7  *
   8  *
   9  *  This driver is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This driver is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  22  */
  23
  24 #include <linux/init.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/pci.h>
  27 #include <linux/slab.h>
  28 #include <linux/moduleparam.h>
  29 #include <linux/bitops.h>
  30 #include <asm/io.h>
  31 #include <sound/core.h>
  32 #include <sound/pcm.h>
  33 #include <sound/pcm_params.h>
  34 #include <sound/control.h>
  35 #include <sound/initval.h>
  36
  37 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
  38 MODULE_DESCRIPTION("Brooktree Bt87x audio driver");
  39 MODULE_LICENSE("GPL");
  40 MODULE_SUPPORTED_DEVICE("{{Brooktree,Bt878},"
  41                 "{Brooktree,Bt879}}");
  42
  43 static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */
  44 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  45 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
  46 static int digital_rate[SNDRV_CARDS];   /* digital input rate */
  47 static int load_all;    /* allow to load the non-whitelisted cards */
  48
  49 module_param_array(index, int, NULL, 0444);
  50 MODULE_PARM_DESC(index, "Index value for Bt87x soundcard");
  51 module_param_array(id, charp, NULL, 0444);
  52 MODULE_PARM_DESC(id, "ID string for Bt87x soundcard");
  53 module_param_array(enable, bool, NULL, 0444);
  54 MODULE_PARM_DESC(enable, "Enable Bt87x soundcard");
  55 module_param_array(digital_rate, int, NULL, 0444);
  56 MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard");
  57 module_param(load_all, bool, 0444);
  58 MODULE_PARM_DESC(load_all, "Allow to load the non-whitelisted cards");
  59
  60
  61 /* register offsets */
  62 #define REG_INT_STAT            0x100   /* interrupt status */
  63 #define REG_INT_MASK            0x104   /* interrupt mask */
  64 #define REG_GPIO_DMA_CTL        0x10c   /* audio control */
  65 #define REG_PACKET_LEN          0x110   /* audio packet lengths */
  66 #define REG_RISC_STRT_ADD       0x114   /* RISC program start address */
  67 #define REG_RISC_COUNT          0x120   /* RISC program counter */
  68
  69 /* interrupt bits */
  70 #define INT_OFLOW       (1 <<  3)       /* audio A/D overflow */
  71 #define INT_RISCI       (1 << 11)       /* RISC instruction IRQ bit set */
  72 #define INT_FBUS        (1 << 12)       /* FIFO overrun due to bus access latency */
  73 #define INT_FTRGT       (1 << 13)       /* FIFO overrun due to target latency */
  74 #define INT_FDSR        (1 << 14)       /* FIFO data stream resynchronization */
  75 #define INT_PPERR       (1 << 15)       /* PCI parity error */
  76 #define INT_RIPERR      (1 << 16)       /* RISC instruction parity error */
  77 #define INT_PABORT      (1 << 17)       /* PCI master or target abort */
  78 #define INT_OCERR       (1 << 18)       /* invalid opcode */
  79 #define INT_SCERR       (1 << 19)       /* sync counter overflow */
  80 #define INT_RISC_EN     (1 << 27)       /* DMA controller running */
  81 #define INT_RISCS_SHIFT       28        /* RISC status bits */
  82
  83 /* audio control bits */
  84 #define CTL_FIFO_ENABLE         (1 <<  0)       /* enable audio data FIFO */
  85 #define CTL_RISC_ENABLE         (1 <<  1)       /* enable audio DMA controller */
  86 #define CTL_PKTP_4              (0 <<  2)       /* packet mode FIFO trigger point - 4 DWORDs */
  87 #define CTL_PKTP_8              (1 <<  2)       /* 8 DWORDs */
  88 #define CTL_PKTP_16             (2 <<  2)       /* 16 DWORDs */
  89 #define CTL_ACAP_EN             (1 <<  4)       /* enable audio capture */
  90 #define CTL_DA_APP              (1 <<  5)       /* GPIO input */
  91 #define CTL_DA_IOM_AFE          (0 <<  6)       /* audio A/D input */
  92 #define CTL_DA_IOM_DA           (1 <<  6)       /* digital audio input */
  93 #define CTL_DA_SDR_SHIFT               8        /* DDF first stage decimation rate */
  94 #define CTL_DA_SDR_MASK         (0xf<< 8)
  95 #define CTL_DA_LMT              (1 << 12)       /* limit audio data values */
  96 #define CTL_DA_ES2              (1 << 13)       /* enable DDF stage 2 */
  97 #define CTL_DA_SBR              (1 << 14)       /* samples rounded to 8 bits */
  98 #define CTL_DA_DPM              (1 << 15)       /* data packet mode */
  99 #define CTL_DA_LRD_SHIFT              16        /* ALRCK delay */
 100 #define CTL_DA_MLB              (1 << 21)       /* MSB/LSB format */
 101 #define CTL_DA_LRI              (1 << 22)       /* left/right indication */
 102 #define CTL_DA_SCE              (1 << 23)       /* sample clock edge */
 103 #define CTL_A_SEL_STV           (0 << 24)       /* TV tuner audio input */
 104 #define CTL_A_SEL_SFM           (1 << 24)       /* FM audio input */
 105 #define CTL_A_SEL_SML           (2 << 24)       /* mic/line audio input */
 106 #define CTL_A_SEL_SMXC          (3 << 24)       /* MUX bypass */
 107 #define CTL_A_SEL_SHIFT               24
 108 #define CTL_A_SEL_MASK          (3 << 24)
 109 #define CTL_A_PWRDN             (1 << 26)       /* analog audio power-down */
 110 #define CTL_A_G2X               (1 << 27)       /* audio gain boost */
 111 #define CTL_A_GAIN_SHIFT              28        /* audio input gain */
 112 #define CTL_A_GAIN_MASK         (0xf<<28)
 113
 114 /* RISC instruction opcodes */
 115 #define RISC_WRITE      (0x1 << 28)     /* write FIFO data to memory at address */
 116 #define RISC_WRITEC     (0x5 << 28)     /* write FIFO data to memory at current address */
 117 #define RISC_SKIP       (0x2 << 28)     /* skip FIFO data */
 118 #define RISC_JUMP       (0x7 << 28)     /* jump to address */
 119 #define RISC_SYNC       (0x8 << 28)     /* synchronize with FIFO */
 120
 121 /* RISC instruction bits */
 122 #define RISC_BYTES_ENABLE       (0xf << 12)     /* byte enable bits */
 123 #define RISC_RESYNC             (  1 << 15)     /* disable FDSR errors */
 124 #define RISC_SET_STATUS_SHIFT           16      /* set status bits */
 125 #define RISC_RESET_STATUS_SHIFT         20      /* clear status bits */
 126 #define RISC_IRQ                (  1 << 24)     /* interrupt */
 127 #define RISC_EOL                (  1 << 26)     /* end of line */
 128 #define RISC_SOL                (  1 << 27)     /* start of line */
 129
 130 /* SYNC status bits values */
 131 #define RISC_SYNC_FM1   0x6
 132 #define RISC_SYNC_VRO   0xc
 133
 134 #define ANALOG_CLOCK 1792000
 135 #ifdef CONFIG_SND_BT87X_OVERCLOCK
 136 #define CLOCK_DIV_MIN 1
 137 #else
 138 #define CLOCK_DIV_MIN 4
 139 #endif
 140 #define CLOCK_DIV_MAX 15
 141
 142 #define ERROR_INTERRUPTS (INT_FBUS | INT_FTRGT | INT_PPERR | \
 143                           INT_RIPERR | INT_PABORT | INT_OCERR)
 144 #define MY_INTERRUPTS (INT_RISCI | ERROR_INTERRUPTS)
 145
 146 /* SYNC, one WRITE per line, one extra WRITE per page boundary, SYNC, JUMP */
 147 #define MAX_RISC_SIZE ((1 + 255 + (PAGE_ALIGN(255 * 4092) / PAGE_SIZE - 1) + 1 + 1) * 8)
 148
 149 /* Cards with configuration information */
 150 enum snd_bt87x_boardid {
 151         SND_BT87X_BOARD_UNKNOWN,
 152         SND_BT87X_BOARD_GENERIC,        /* both an & dig interfaces, 32kHz */
 153         SND_BT87X_BOARD_ANALOG,         /* board with no external A/D */
 154         SND_BT87X_BOARD_OSPREY2x0,
 155         SND_BT87X_BOARD_OSPREY440,
 156         SND_BT87X_BOARD_AVPHONE98,
 157 };
 158
 159 /* Card configuration */
 160 struct snd_bt87x_board {
 161         int dig_rate;           /* Digital input sampling rate */
 162         u32 digital_fmt;        /* Register settings for digital input */
 163         unsigned no_analog:1;   /* No analog input */
 164         unsigned no_digital:1;  /* No digital input */
 165 };
 166
 167 static __devinitdata struct snd_bt87x_board snd_bt87x_boards[] = {
 168         [SND_BT87X_BOARD_UNKNOWN] = {
 169                 .dig_rate = 32000, /* just a guess */
 170         },
 171         [SND_BT87X_BOARD_GENERIC] = {
 172                 .dig_rate = 32000,
 173         },
 174         [SND_BT87X_BOARD_ANALOG] = {
 175                 .no_digital = 1,
 176         },
 177         [SND_BT87X_BOARD_OSPREY2x0] = {
 178                 .dig_rate = 44100,
 179                 .digital_fmt = CTL_DA_LRI | (1 << CTL_DA_LRD_SHIFT),
 180         },
 181         [SND_BT87X_BOARD_OSPREY440] = {
 182                 .dig_rate = 32000,
 183                 .digital_fmt = CTL_DA_LRI | (1 << CTL_DA_LRD_SHIFT),
 184                 .no_analog = 1,
 185         },
 186         [SND_BT87X_BOARD_AVPHONE98] = {
 187                 .dig_rate = 48000,
 188         },
 189 };
 190
 191 struct snd_bt87x {
 192         struct snd_card *card;
 193         struct pci_dev *pci;
 194         struct snd_bt87x_board board;
 195
 196         void __iomem *mmio;
 197         int irq;
 198
 199         spinlock_t reg_lock;
 200         unsigned long opened;
 201         struct snd_pcm_substream *substream;
 202
 203         struct snd_dma_buffer dma_risc;
 204         unsigned int line_bytes;
 205         unsigned int lines;
 206
 207         u32 reg_control;
 208         u32 interrupt_mask;
 209
 210         int current_line;
 211
 212         int pci_parity_errors;
 213 };
 214
 215 enum { DEVICE_DIGITAL, DEVICE_ANALOG };
 216
 217 static inline u32 snd_bt87x_readl(struct snd_bt87x *chip, u32 reg)
 218 {
 219         return readl(chip->mmio + reg);
 220 }
 221
 222 static inline void snd_bt87x_writel(struct snd_bt87x *chip, u32 reg, u32 value)
 223 {
 224         writel(value, chip->mmio + reg);
 225 }
 226
 227 static int snd_bt87x_create_risc(struct snd_bt87x *chip, struct snd_pcm_substream *substream,
 228                                  unsigned int periods, unsigned int period_bytes)
 229 {
 230         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
 231         unsigned int i, offset;
 232         u32 *risc;
 233
 234         if (chip->dma_risc.area == NULL) {
 235                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 236                                         PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
 237                         return -ENOMEM;
 238         }
 239         risc = (u32 *)chip->dma_risc.area;
 240         offset = 0;
 241         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
 242         *risc++ = cpu_to_le32(0);
 243         for (i = 0; i < periods; ++i) {
 244                 u32 rest;
 245
 246                 rest = period_bytes;
 247                 do {
 248                         u32 cmd, len;
 249
 250                         len = PAGE_SIZE - (offset % PAGE_SIZE);
 251                         if (len > rest)
 252                                 len = rest;
 253                         cmd = RISC_WRITE | len;
 254                         if (rest == period_bytes) {
 255                                 u32 block = i * 16 / periods;
 256                                 cmd |= RISC_SOL;
 257                                 cmd |= block << RISC_SET_STATUS_SHIFT;
 258                                 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
 259                         }
 260                         if (len == rest)
 261                                 cmd |= RISC_EOL | RISC_IRQ;
 262                         *risc++ = cpu_to_le32(cmd);
 263                         *risc++ = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, offset));
 264                         offset += len;
 265                         rest -= len;
 266                 } while (rest > 0);
 267         }
 268         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
 269         *risc++ = cpu_to_le32(0);
 270         *risc++ = cpu_to_le32(RISC_JUMP);
 271         *risc++ = cpu_to_le32(chip->dma_risc.addr);
 272         chip->line_bytes = period_bytes;
 273         chip->lines = periods;
 274         return 0;
 275 }
 276
 277 static void snd_bt87x_free_risc(struct snd_bt87x *chip)
 278 {
 279         if (chip->dma_risc.area) {
 280                 snd_dma_free_pages(&chip->dma_risc);
 281                 chip->dma_risc.area = NULL;
 282         }
 283 }
 284
 285 static void snd_bt87x_pci_error(struct snd_bt87x *chip, unsigned int status)
 286 {
 287         u16 pci_status;
 288
 289         pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
 290         pci_status &= PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
 291                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
 292                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY;
 293         pci_write_config_word(chip->pci, PCI_STATUS, pci_status);
 294         if (pci_status != PCI_STATUS_DETECTED_PARITY)
 295                 snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
 296                            status & ERROR_INTERRUPTS, pci_status);
 297         else {
 298                 snd_printk(KERN_ERR "Aieee - PCI parity error detected!\n");
 299                 /* error 'handling' similar to aic7xxx_pci.c: */
 300                 chip->pci_parity_errors++;
 301                 if (chip->pci_parity_errors > 20) {
 302                         snd_printk(KERN_ERR "Too many PCI parity errors observed.\n");
 303                         snd_printk(KERN_ERR "Some device on this bus is generating bad parity.\n");
 304                         snd_printk(KERN_ERR "This is an error *observed by*, not *generated by*, this card.\n");
 305                         snd_printk(KERN_ERR "PCI parity error checking has been disabled.\n");
 306                         chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR);
 307                         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
 308                 }
 309         }
 310 }
 311
 312 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id)
 313 {
 314         struct snd_bt87x *chip = dev_id;
 315         unsigned int status, irq_status;
 316
 317         status = snd_bt87x_readl(chip, REG_INT_STAT);
 318         irq_status = status & chip->interrupt_mask;
 319         if (!irq_status)
 320                 return IRQ_NONE;
 321         snd_bt87x_writel(chip, REG_INT_STAT, irq_status);
 322
 323         if (irq_status & ERROR_INTERRUPTS) {
 324                 if (irq_status & (INT_FBUS | INT_FTRGT))
 325                         snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
 326                 if (irq_status & INT_OCERR)
 327                         snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
 328                 if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT))
 329                         snd_bt87x_pci_error(chip, irq_status);
 330         }
 331         if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) {
 332                 int current_block, irq_block;
 333
 334                 /* assume that exactly one line has been recorded */
 335                 chip->current_line = (chip->current_line + 1) % chip->lines;
 336                 /* but check if some interrupts have been skipped */
 337                 current_block = chip->current_line * 16 / chip->lines;
 338                 irq_block = status >> INT_RISCS_SHIFT;
 339                 if (current_block != irq_block)
 340                         chip->current_line = (irq_block * chip->lines + 15) / 16;
 341
 342                 snd_pcm_period_elapsed(chip->substream);
 343         }
 344         return IRQ_HANDLED;
 345 }
 346
 347 static struct snd_pcm_hardware snd_bt87x_digital_hw = {
 348         .info = SNDRV_PCM_INFO_MMAP |
 349                 SNDRV_PCM_INFO_INTERLEAVED |
 350                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 351                 SNDRV_PCM_INFO_MMAP_VALID,
 352         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 353         .rates = 0, /* set at runtime */
 354         .channels_min = 2,
 355         .channels_max = 2,
 356         .buffer_bytes_max = 255 * 4092,
 357         .period_bytes_min = 32,
 358         .period_bytes_max = 4092,
 359         .periods_min = 2,
 360         .periods_max = 255,
 361 };
 362
 363 static struct snd_pcm_hardware snd_bt87x_analog_hw = {
 364         .info = SNDRV_PCM_INFO_MMAP |
 365                 SNDRV_PCM_INFO_INTERLEAVED |
 366                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 367                 SNDRV_PCM_INFO_MMAP_VALID,
 368         .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
 369         .rates = SNDRV_PCM_RATE_KNOT,
 370         .rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX,
 371         .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN,
 372         .channels_min = 1,
 373         .channels_max = 1,
 374         .buffer_bytes_max = 255 * 4092,
 375         .period_bytes_min = 32,
 376         .period_bytes_max = 4092,
 377         .periods_min = 2,
 378         .periods_max = 255,
 379 };
 380
 381 static int snd_bt87x_set_digital_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
 382 {
 383         chip->reg_control |= CTL_DA_IOM_DA | CTL_A_PWRDN;
 384         runtime->hw = snd_bt87x_digital_hw;
 385         runtime->hw.rates = snd_pcm_rate_to_rate_bit(chip->board.dig_rate);
 386         runtime->hw.rate_min = chip->board.dig_rate;
 387         runtime->hw.rate_max = chip->board.dig_rate;
 388         return 0;
 389 }
 390
 391 static int snd_bt87x_set_analog_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
 392 {
 393         static struct snd_ratnum analog_clock = {
 394                 .num = ANALOG_CLOCK,
 395                 .den_min = CLOCK_DIV_MIN,
 396                 .den_max = CLOCK_DIV_MAX,
 397                 .den_step = 1
 398         };
 399         static struct snd_pcm_hw_constraint_ratnums constraint_rates = {
 400                 .nrats = 1,
 401                 .rats = &analog_clock
 402         };
 403
 404         chip->reg_control &= ~(CTL_DA_IOM_DA | CTL_A_PWRDN);
 405         runtime->hw = snd_bt87x_analog_hw;
 406         return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 407                                              &constraint_rates);
 408 }
 409
 410 static int snd_bt87x_pcm_open(struct snd_pcm_substream *substream)
 411 {
 412         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 413         struct snd_pcm_runtime *runtime = substream->runtime;
 414         int err;
 415
 416         if (test_and_set_bit(0, &chip->opened))
 417                 return -EBUSY;
 418
 419         if (substream->pcm->device == DEVICE_DIGITAL)
 420                 err = snd_bt87x_set_digital_hw(chip, runtime);
 421         else
 422                 err = snd_bt87x_set_analog_hw(chip, runtime);
 423         if (err < 0)
 424                 goto _error;
 425
 426         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
 427         if (err < 0)
 428                 goto _error;
 429
 430         chip->substream = substream;
 431         return 0;
 432
 433 _error:
 434         clear_bit(0, &chip->opened);
 435         smp_mb__after_clear_bit();
 436         return err;
 437 }
 438
 439 static int snd_bt87x_close(struct snd_pcm_substream *substream)
 440 {
 441         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 442
 443         spin_lock_irq(&chip->reg_lock);
 444         chip->reg_control |= CTL_A_PWRDN;
 445         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 446         spin_unlock_irq(&chip->reg_lock);
 447
 448         chip->substream = NULL;
 449         clear_bit(0, &chip->opened);
 450         smp_mb__after_clear_bit();
 451         return 0;
 452 }
 453
 454 static int snd_bt87x_hw_params(struct snd_pcm_substream *substream,
 455                                struct snd_pcm_hw_params *hw_params)
 456 {
 457         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 458         int err;
 459
 460         err = snd_pcm_lib_malloc_pages(substream,
 461                                        params_buffer_bytes(hw_params));
 462         if (err < 0)
 463                 return err;
 464         return snd_bt87x_create_risc(chip, substream,
 465                                      params_periods(hw_params),
 466                                      params_period_bytes(hw_params));
 467 }
 468
 469 static int snd_bt87x_hw_free(struct snd_pcm_substream *substream)
 470 {
 471         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 472
 473         snd_bt87x_free_risc(chip);
 474         snd_pcm_lib_free_pages(substream);
 475         return 0;
 476 }
 477
 478 static int snd_bt87x_prepare(struct snd_pcm_substream *substream)
 479 {
 480         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 481         struct snd_pcm_runtime *runtime = substream->runtime;
 482         int decimation;
 483
 484         spin_lock_irq(&chip->reg_lock);
 485         chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
 486         decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
 487         chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
 488         if (runtime->format == SNDRV_PCM_FORMAT_S8)
 489                 chip->reg_control |= CTL_DA_SBR;
 490         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 491         spin_unlock_irq(&chip->reg_lock);
 492         return 0;
 493 }
 494
 495 static int snd_bt87x_start(struct snd_bt87x *chip)
 496 {
 497         spin_lock(&chip->reg_lock);
 498         chip->current_line = 0;
 499         chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
 500         snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
 501         snd_bt87x_writel(chip, REG_PACKET_LEN,
 502                          chip->line_bytes | (chip->lines << 16));
 503         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
 504         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 505         spin_unlock(&chip->reg_lock);
 506         return 0;
 507 }
 508
 509 static int snd_bt87x_stop(struct snd_bt87x *chip)
 510 {
 511         spin_lock(&chip->reg_lock);
 512         chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
 513         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 514         snd_bt87x_writel(chip, REG_INT_MASK, 0);
 515         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
 516         spin_unlock(&chip->reg_lock);
 517         return 0;
 518 }
 519
 520 static int snd_bt87x_trigger(struct snd_pcm_substream *substream, int cmd)
 521 {
 522         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 523
 524         switch (cmd) {
 525         case SNDRV_PCM_TRIGGER_START:
 526                 return snd_bt87x_start(chip);
 527         case SNDRV_PCM_TRIGGER_STOP:
 528                 return snd_bt87x_stop(chip);
 529         default:
 530                 return -EINVAL;
 531         }
 532 }
 533
 534 static snd_pcm_uframes_t snd_bt87x_pointer(struct snd_pcm_substream *substream)
 535 {
 536         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 537         struct snd_pcm_runtime *runtime = substream->runtime;
 538
 539         return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
 540 }
 541
 542 static struct snd_pcm_ops snd_bt87x_pcm_ops = {
 543         .open = snd_bt87x_pcm_open,
 544         .close = snd_bt87x_close,
 545         .ioctl = snd_pcm_lib_ioctl,
 546         .hw_params = snd_bt87x_hw_params,
 547         .hw_free = snd_bt87x_hw_free,
 548         .prepare = snd_bt87x_prepare,
 549         .trigger = snd_bt87x_trigger,
 550         .pointer = snd_bt87x_pointer,
 551         .page = snd_pcm_sgbuf_ops_page,
 552 };
 553
 554 static int snd_bt87x_capture_volume_info(struct snd_kcontrol *kcontrol,
 555                                          struct snd_ctl_elem_info *info)
 556 {
 557         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 558         info->count = 1;
 559         info->value.integer.min = 0;
 560         info->value.integer.max = 15;
 561         return 0;
 562 }
 563
 564 static int snd_bt87x_capture_volume_get(struct snd_kcontrol *kcontrol,
 565                                         struct snd_ctl_elem_value *value)
 566 {
 567         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 568
 569         value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
 570         return 0;
 571 }
 572
 573 static int snd_bt87x_capture_volume_put(struct snd_kcontrol *kcontrol,
 574                                         struct snd_ctl_elem_value *value)
 575 {
 576         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 577         u32 old_control;
 578         int changed;
 579
 580         spin_lock_irq(&chip->reg_lock);
 581         old_control = chip->reg_control;
 582         chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
 583                 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
 584         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 585         changed = old_control != chip->reg_control;
 586         spin_unlock_irq(&chip->reg_lock);
 587         return changed;
 588 }
 589
 590 static struct snd_kcontrol_new snd_bt87x_capture_volume = {
 591         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 592         .name = "Capture Volume",
 593         .info = snd_bt87x_capture_volume_info,
 594         .get = snd_bt87x_capture_volume_get,
 595         .put = snd_bt87x_capture_volume_put,
 596 };
 597
 598 #define snd_bt87x_capture_boost_info    snd_ctl_boolean_mono_info
 599
 600 static int snd_bt87x_capture_boost_get(struct snd_kcontrol *kcontrol,
 601                                        struct snd_ctl_elem_value *value)
 602 {
 603         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 604
 605         value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
 606         return 0;
 607 }
 608
 609 static int snd_bt87x_capture_boost_put(struct snd_kcontrol *kcontrol,
 610                                        struct snd_ctl_elem_value *value)
 611 {
 612         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 613         u32 old_control;
 614         int changed;
 615
 616         spin_lock_irq(&chip->reg_lock);
 617         old_control = chip->reg_control;
 618         chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
 619                 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
 620         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 621         changed = chip->reg_control != old_control;
 622         spin_unlock_irq(&chip->reg_lock);
 623         return changed;
 624 }
 625
 626 static struct snd_kcontrol_new snd_bt87x_capture_boost = {
 627         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 628         .name = "Capture Boost",
 629         .info = snd_bt87x_capture_boost_info,
 630         .get = snd_bt87x_capture_boost_get,
 631         .put = snd_bt87x_capture_boost_put,
 632 };
 633
 634 static int snd_bt87x_capture_source_info(struct snd_kcontrol *kcontrol,
 635                                          struct snd_ctl_elem_info *info)
 636 {
 637         static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"};
 638
 639         info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 640         info->count = 1;
 641         info->value.enumerated.items = 3;
 642         if (info->value.enumerated.item > 2)
 643                 info->value.enumerated.item = 2;
 644         strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]);
 645         return 0;
 646 }
 647
 648 static int snd_bt87x_capture_source_get(struct snd_kcontrol *kcontrol,
 649                                         struct snd_ctl_elem_value *value)
 650 {
 651         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 652
 653         value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
 654         return 0;
 655 }
 656
 657 static int snd_bt87x_capture_source_put(struct snd_kcontrol *kcontrol,
 658                                         struct snd_ctl_elem_value *value)
 659 {
 660         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 661         u32 old_control;
 662         int changed;
 663
 664         spin_lock_irq(&chip->reg_lock);
 665         old_control = chip->reg_control;
 666         chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
 667                 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
 668         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 669         changed = chip->reg_control != old_control;
 670         spin_unlock_irq(&chip->reg_lock);
 671         return changed;
 672 }
 673
 674 static struct snd_kcontrol_new snd_bt87x_capture_source = {
 675         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 676         .name = "Capture Source",
 677         .info = snd_bt87x_capture_source_info,
 678         .get = snd_bt87x_capture_source_get,
 679         .put = snd_bt87x_capture_source_put,
 680 };
 681
 682 static int snd_bt87x_free(struct snd_bt87x *chip)
 683 {
 684         if (chip->mmio) {
 685                 snd_bt87x_stop(chip);
 686                 if (chip->irq >= 0)
 687                         synchronize_irq(chip->irq);
 688
 689                 iounmap(chip->mmio);
 690         }
 691         if (chip->irq >= 0)
 692                 free_irq(chip->irq, chip);
 693         pci_release_regions(chip->pci);
 694         pci_disable_device(chip->pci);
 695         kfree(chip);
 696         return 0;
 697 }
 698
 699 static int snd_bt87x_dev_free(struct snd_device *device)
 700 {
 701         struct snd_bt87x *chip = device->device_data;
 702         return snd_bt87x_free(chip);
 703 }
 704
 705 static int __devinit snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name)
 706 {
 707         int err;
 708         struct snd_pcm *pcm;
 709
 710         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
 711         if (err < 0)
 712                 return err;
 713         pcm->private_data = chip;
 714         strcpy(pcm->name, name);
 715         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
 716         return snd_pcm_lib_preallocate_pages_for_all(pcm,
 717                                                      SNDRV_DMA_TYPE_DEV_SG,
 718                                                      snd_dma_pci_data(chip->pci),
 719                                                         128 * 1024,
 720                                                         ALIGN(255 * 4092, 1024));
 721 }
 722
 723 static int __devinit snd_bt87x_create(struct snd_card *card,
 724                                       struct pci_dev *pci,
 725                                       struct snd_bt87x **rchip)
 726 {
 727         struct snd_bt87x *chip;
 728         int err;
 729         static struct snd_device_ops ops = {
 730                 .dev_free = snd_bt87x_dev_free
 731         };
 732
 733         *rchip = NULL;
 734
 735         err = pci_enable_device(pci);
 736         if (err < 0)
 737                 return err;
 738
 739         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 740         if (!chip) {
 741                 pci_disable_device(pci);
 742                 return -ENOMEM;
 743         }
 744         chip->card = card;
 745         chip->pci = pci;
 746         chip->irq = -1;
 747         spin_lock_init(&chip->reg_lock);
 748
 749         if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
 750                 kfree(chip);
 751                 pci_disable_device(pci);
 752                 return err;
 753         }
 754         chip->mmio = ioremap_nocache(pci_resource_start(pci, 0),
 755                                      pci_resource_len(pci, 0));
 756         if (!chip->mmio) {
 757                 snd_printk(KERN_ERR "cannot remap io memory\n");
 758                 err = -ENOMEM;
 759                 goto fail;
 760         }
 761
 762         chip->reg_control = CTL_A_PWRDN | CTL_DA_ES2 |
 763                             CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
 764         chip->interrupt_mask = MY_INTERRUPTS;
 765         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 766         snd_bt87x_writel(chip, REG_INT_MASK, 0);
 767         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
 768
 769         err = request_irq(pci->irq, snd_bt87x_interrupt, IRQF_SHARED,
 770                           "Bt87x audio", chip);
 771         if (err < 0) {
 772                 snd_printk(KERN_ERR "cannot grab irq %d\n", pci->irq);
 773                 goto fail;
 774         }
 775         chip->irq = pci->irq;
 776         pci_set_master(pci);
 777         synchronize_irq(chip->irq);
 778
 779         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 780         if (err < 0)
 781                 goto fail;
 782
 783         snd_card_set_dev(card, &pci->dev);
 784         *rchip = chip;
 785         return 0;
 786
 787 fail:
 788         snd_bt87x_free(chip);
 789         return err;
 790 }
 791
 792 #define BT_DEVICE(chip, subvend, subdev, id) \
 793         { .vendor = PCI_VENDOR_ID_BROOKTREE, \
 794           .device = chip, \
 795           .subvendor = subvend, .subdevice = subdev, \
 796           .driver_data = SND_BT87X_BOARD_ ## id }
 797 /* driver_data is the card id for that device */
 798
 799 static struct pci_device_id snd_bt87x_ids[] = {
 800         /* Hauppauge WinTV series */
 801         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, GENERIC),
 802         /* Hauppauge WinTV series */
 803         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, GENERIC),
 804         /* Viewcast Osprey 200 */
 805         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, OSPREY2x0),
 806         /* Viewcast Osprey 440 (rate is configurable via gpio) */
 807         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff07, OSPREY440),
 808         /* ATI TV-Wonder */
 809         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1002, 0x0001, GENERIC),
 810         /* Leadtek Winfast tv 2000xp delux */
 811         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x107d, 0x6606, GENERIC),
 812         /* Voodoo TV 200 */
 813         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x121a, 0x3000, GENERIC),
 814         /* AVerMedia Studio No. 103, 203, ...? */
 815         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1461, 0x0003, AVPHONE98),
 816         /* Prolink PixelView PV-M4900 */
 817         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1554, 0x4011, GENERIC),
 818         /* Pinnacle  Studio PCTV rave */
 819         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0xbd11, 0x1200, GENERIC),
 820         { }
 821 };
 822 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
 823
 824 /* cards known not to have audio
 825  * (DVB cards use the audio function to transfer MPEG data) */
 826 static struct {
 827         unsigned short subvendor, subdevice;
 828 } blacklist[] __devinitdata = {
 829         {0x0071, 0x0101}, /* Nebula Electronics DigiTV */
 830         {0x11bd, 0x001c}, /* Pinnacle PCTV Sat */
 831         {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
 832         {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */
 833         {0x1461, 0x0771}, /* AVermedia DVB-T 771 */
 834         {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */
 835         {0x18ac, 0xd500}, /* DVICO FusionHDTV 5 Lite */
 836         {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */
 837         {0x18ac, 0xdb11}, /* Ultraview DVB-T Lite */
 838         {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */
 839         {0x7063, 0x2000}, /* pcHDTV HD-2000 TV */
 840 };
 841
 842 static struct pci_driver driver;
 843
 844 /* return the id of the card, or a negative value if it's blacklisted */
 845 static int __devinit snd_bt87x_detect_card(struct pci_dev *pci)
 846 {
 847         int i;
 848         const struct pci_device_id *supported;
 849
 850         supported = pci_match_id(snd_bt87x_ids, pci);
 851         if (supported && supported->driver_data > 0)
 852                 return supported->driver_data;
 853
 854         for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
 855                 if (blacklist[i].subvendor == pci->subsystem_vendor &&
 856                     blacklist[i].subdevice == pci->subsystem_device) {
 857                         snd_printdd(KERN_INFO "card %#04x-%#04x:%#04x has no audio\n",
 858                                     pci->device, pci->subsystem_vendor, pci->subsystem_device);
 859                         return -EBUSY;
 860                 }
 861
 862         snd_printk(KERN_INFO "unknown card %#04x-%#04x:%#04x\n",
 863                    pci->device, pci->subsystem_vendor, pci->subsystem_device);
 864         snd_printk(KERN_DEBUG "please mail id, board name, and, "
 865                    "if it works, the correct digital_rate option to "
 866                    "<alsa-devel@alsa-project.org>\n");
 867         return SND_BT87X_BOARD_UNKNOWN;
 868 }
 869
 870 static int __devinit snd_bt87x_probe(struct pci_dev *pci,
 871                                      const struct pci_device_id *pci_id)
 872 {
 873         static int dev;
 874         struct snd_card *card;
 875         struct snd_bt87x *chip;
 876         int err;
 877         enum snd_bt87x_boardid boardid;
 878
 879         if (!pci_id->driver_data) {
 880                 err = snd_bt87x_detect_card(pci);
 881                 if (err < 0)
 882                         return -ENODEV;
 883                 boardid = err;
 884         } else
 885                 boardid = pci_id->driver_data;
 886
 887         if (dev >= SNDRV_CARDS)
 888                 return -ENODEV;
 889         if (!enable[dev]) {
 890                 ++dev;
 891                 return -ENOENT;
 892         }
 893
 894         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
 895         if (!card)
 896                 return -ENOMEM;
 897
 898         err = snd_bt87x_create(card, pci, &chip);
 899         if (err < 0)
 900                 goto _error;
 901
 902         memcpy(&chip->board, &snd_bt87x_boards[boardid], sizeof(chip->board));
 903
 904         if (!chip->board.no_digital) {
 905                 if (digital_rate[dev] > 0)
 906                         chip->board.dig_rate = digital_rate[dev];
 907
 908                 chip->reg_control |= chip->board.digital_fmt;
 909
 910                 err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
 911                 if (err < 0)
 912                         goto _error;
 913         }
 914         if (!chip->board.no_analog) {
 915                 err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
 916                 if (err < 0)
 917                         goto _error;
 918                 err = snd_ctl_add(card, snd_ctl_new1(
 919                                   &snd_bt87x_capture_volume, chip));
 920                 if (err < 0)
 921                         goto _error;
 922                 err = snd_ctl_add(card, snd_ctl_new1(
 923                                   &snd_bt87x_capture_boost, chip));
 924                 if (err < 0)
 925                         goto _error;
 926                 err = snd_ctl_add(card, snd_ctl_new1(
 927                                   &snd_bt87x_capture_source, chip));
 928                 if (err < 0)
 929                         goto _error;
 930         }
 931         snd_printk(KERN_INFO "bt87x%d: Using board %d, %sanalog, %sdigital "
 932                    "(rate %d Hz)\n", dev, boardid,
 933                    chip->board.no_analog ? "no " : "",
 934                    chip->board.no_digital ? "no " : "", chip->board.dig_rate);
 935
 936         strcpy(card->driver, "Bt87x");
 937         sprintf(card->shortname, "Brooktree Bt%x", pci->device);
 938         sprintf(card->longname, "%s at %#llx, irq %i",
 939                 card->shortname, (unsigned long long)pci_resource_start(pci, 0),
 940                 chip->irq);
 941         strcpy(card->mixername, "Bt87x");
 942
 943         err = snd_card_register(card);
 944         if (err < 0)
 945                 goto _error;
 946
 947         pci_set_drvdata(pci, card);
 948         ++dev;
 949         return 0;
 950
 951 _error:
 952         snd_card_free(card);
 953         return err;
 954 }
 955
 956 static void __devexit snd_bt87x_remove(struct pci_dev *pci)
 957 {
 958         snd_card_free(pci_get_drvdata(pci));
 959         pci_set_drvdata(pci, NULL);
 960 }
 961
 962 /* default entries for all Bt87x cards - it's not exported */
 963 /* driver_data is set to 0 to call detection */
 964 static struct pci_device_id snd_bt87x_default_ids[] __devinitdata = {
 965         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN),
 966         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN),
 967         { }
 968 };
 969
 970 static struct pci_driver driver = {
 971         .name = "Bt87x",
 972         .id_table = snd_bt87x_ids,
 973         .probe = snd_bt87x_probe,
 974         .remove = __devexit_p(snd_bt87x_remove),
 975 };
 976
 977 static int __init alsa_card_bt87x_init(void)
 978 {
 979         if (load_all)
 980                 driver.id_table = snd_bt87x_default_ids;
 981         return pci_register_driver(&driver);
 982 }
 983
 984 static void __exit alsa_card_bt87x_exit(void)
 985 {
 986         pci_unregister_driver(&driver);
 987 }
 988
 989 module_init(alsa_card_bt87x_init)
 990 module_exit(alsa_card_bt87x_exit)