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/module.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         unsigned int i, offset;
 231         u32 *risc;
 232
 233         if (chip->dma_risc.area == NULL) {
 234                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 235                                         PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
 236                         return -ENOMEM;
 237         }
 238         risc = (u32 *)chip->dma_risc.area;
 239         offset = 0;
 240         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
 241         *risc++ = cpu_to_le32(0);
 242         for (i = 0; i < periods; ++i) {
 243                 u32 rest;
 244
 245                 rest = period_bytes;
 246                 do {
 247                         u32 cmd, len;
 248                         unsigned int addr;
 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                         addr = snd_pcm_sgbuf_get_addr(substream, offset);
 264                         *risc++ = cpu_to_le32(addr);
 265                         offset += len;
 266                         rest -= len;
 267                 } while (rest > 0);
 268         }
 269         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
 270         *risc++ = cpu_to_le32(0);
 271         *risc++ = cpu_to_le32(RISC_JUMP);
 272         *risc++ = cpu_to_le32(chip->dma_risc.addr);
 273         chip->line_bytes = period_bytes;
 274         chip->lines = periods;
 275         return 0;
 276 }
 277
 278 static void snd_bt87x_free_risc(struct snd_bt87x *chip)
 279 {
 280         if (chip->dma_risc.area) {
 281                 snd_dma_free_pages(&chip->dma_risc);
 282                 chip->dma_risc.area = NULL;
 283         }
 284 }
 285
 286 static void snd_bt87x_pci_error(struct snd_bt87x *chip, unsigned int status)
 287 {
 288         u16 pci_status;
 289
 290         pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
 291         pci_status &= PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
 292                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
 293                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY;
 294         pci_write_config_word(chip->pci, PCI_STATUS, pci_status);
 295         if (pci_status != PCI_STATUS_DETECTED_PARITY)
 296                 snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
 297                            status & ERROR_INTERRUPTS, pci_status);
 298         else {
 299                 snd_printk(KERN_ERR "Aieee - PCI parity error detected!\n");
 300                 /* error 'handling' similar to aic7xxx_pci.c: */
 301                 chip->pci_parity_errors++;
 302                 if (chip->pci_parity_errors > 20) {
 303                         snd_printk(KERN_ERR "Too many PCI parity errors observed.\n");
 304                         snd_printk(KERN_ERR "Some device on this bus is generating bad parity.\n");
 305                         snd_printk(KERN_ERR "This is an error *observed by*, not *generated by*, this card.\n");
 306                         snd_printk(KERN_ERR "PCI parity error checking has been disabled.\n");
 307                         chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR);
 308                         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
 309                 }
 310         }
 311 }
 312
 313 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id)
 314 {
 315         struct snd_bt87x *chip = dev_id;
 316         unsigned int status, irq_status;
 317
 318         status = snd_bt87x_readl(chip, REG_INT_STAT);
 319         irq_status = status & chip->interrupt_mask;
 320         if (!irq_status)
 321                 return IRQ_NONE;
 322         snd_bt87x_writel(chip, REG_INT_STAT, irq_status);
 323
 324         if (irq_status & ERROR_INTERRUPTS) {
 325                 if (irq_status & (INT_FBUS | INT_FTRGT))
 326                         snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
 327                 if (irq_status & INT_OCERR)
 328                         snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
 329                 if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT))
 330                         snd_bt87x_pci_error(chip, irq_status);
 331         }
 332         if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) {
 333                 int current_block, irq_block;
 334
 335                 /* assume that exactly one line has been recorded */
 336                 chip->current_line = (chip->current_line + 1) % chip->lines;
 337                 /* but check if some interrupts have been skipped */
 338                 current_block = chip->current_line * 16 / chip->lines;
 339                 irq_block = status >> INT_RISCS_SHIFT;
 340                 if (current_block != irq_block)
 341                         chip->current_line = (irq_block * chip->lines + 15) / 16;
 342
 343                 snd_pcm_period_elapsed(chip->substream);
 344         }
 345         return IRQ_HANDLED;
 346 }
 347
 348 static struct snd_pcm_hardware snd_bt87x_digital_hw = {
 349         .info = SNDRV_PCM_INFO_MMAP |
 350                 SNDRV_PCM_INFO_INTERLEAVED |
 351                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 352                 SNDRV_PCM_INFO_MMAP_VALID |
 353                 SNDRV_PCM_INFO_BATCH,
 354         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 355         .rates = 0, /* set at runtime */
 356         .channels_min = 2,
 357         .channels_max = 2,
 358         .buffer_bytes_max = 255 * 4092,
 359         .period_bytes_min = 32,
 360         .period_bytes_max = 4092,
 361         .periods_min = 2,
 362         .periods_max = 255,
 363 };
 364
 365 static struct snd_pcm_hardware snd_bt87x_analog_hw = {
 366         .info = SNDRV_PCM_INFO_MMAP |
 367                 SNDRV_PCM_INFO_INTERLEAVED |
 368                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 369                 SNDRV_PCM_INFO_MMAP_VALID |
 370                 SNDRV_PCM_INFO_BATCH,
 371         .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
 372         .rates = SNDRV_PCM_RATE_KNOT,
 373         .rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX,
 374         .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN,
 375         .channels_min = 1,
 376         .channels_max = 1,
 377         .buffer_bytes_max = 255 * 4092,
 378         .period_bytes_min = 32,
 379         .period_bytes_max = 4092,
 380         .periods_min = 2,
 381         .periods_max = 255,
 382 };
 383
 384 static int snd_bt87x_set_digital_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
 385 {
 386         chip->reg_control |= CTL_DA_IOM_DA | CTL_A_PWRDN;
 387         runtime->hw = snd_bt87x_digital_hw;
 388         runtime->hw.rates = snd_pcm_rate_to_rate_bit(chip->board.dig_rate);
 389         runtime->hw.rate_min = chip->board.dig_rate;
 390         runtime->hw.rate_max = chip->board.dig_rate;
 391         return 0;
 392 }
 393
 394 static int snd_bt87x_set_analog_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
 395 {
 396         static struct snd_ratnum analog_clock = {
 397                 .num = ANALOG_CLOCK,
 398                 .den_min = CLOCK_DIV_MIN,
 399                 .den_max = CLOCK_DIV_MAX,
 400                 .den_step = 1
 401         };
 402         static struct snd_pcm_hw_constraint_ratnums constraint_rates = {
 403                 .nrats = 1,
 404                 .rats = &analog_clock
 405         };
 406
 407         chip->reg_control &= ~(CTL_DA_IOM_DA | CTL_A_PWRDN);
 408         runtime->hw = snd_bt87x_analog_hw;
 409         return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 410                                              &constraint_rates);
 411 }
 412
 413 static int snd_bt87x_pcm_open(struct snd_pcm_substream *substream)
 414 {
 415         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 416         struct snd_pcm_runtime *runtime = substream->runtime;
 417         int err;
 418
 419         if (test_and_set_bit(0, &chip->opened))
 420                 return -EBUSY;
 421
 422         if (substream->pcm->device == DEVICE_DIGITAL)
 423                 err = snd_bt87x_set_digital_hw(chip, runtime);
 424         else
 425                 err = snd_bt87x_set_analog_hw(chip, runtime);
 426         if (err < 0)
 427                 goto _error;
 428
 429         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
 430         if (err < 0)
 431                 goto _error;
 432
 433         chip->substream = substream;
 434         return 0;
 435
 436 _error:
 437         clear_bit(0, &chip->opened);
 438         smp_mb__after_clear_bit();
 439         return err;
 440 }
 441
 442 static int snd_bt87x_close(struct snd_pcm_substream *substream)
 443 {
 444         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 445
 446         spin_lock_irq(&chip->reg_lock);
 447         chip->reg_control |= CTL_A_PWRDN;
 448         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 449         spin_unlock_irq(&chip->reg_lock);
 450
 451         chip->substream = NULL;
 452         clear_bit(0, &chip->opened);
 453         smp_mb__after_clear_bit();
 454         return 0;
 455 }
 456
 457 static int snd_bt87x_hw_params(struct snd_pcm_substream *substream,
 458                                struct snd_pcm_hw_params *hw_params)
 459 {
 460         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 461         int err;
 462
 463         err = snd_pcm_lib_malloc_pages(substream,
 464                                        params_buffer_bytes(hw_params));
 465         if (err < 0)
 466                 return err;
 467         return snd_bt87x_create_risc(chip, substream,
 468                                      params_periods(hw_params),
 469                                      params_period_bytes(hw_params));
 470 }
 471
 472 static int snd_bt87x_hw_free(struct snd_pcm_substream *substream)
 473 {
 474         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 475
 476         snd_bt87x_free_risc(chip);
 477         snd_pcm_lib_free_pages(substream);
 478         return 0;
 479 }
 480
 481 static int snd_bt87x_prepare(struct snd_pcm_substream *substream)
 482 {
 483         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 484         struct snd_pcm_runtime *runtime = substream->runtime;
 485         int decimation;
 486
 487         spin_lock_irq(&chip->reg_lock);
 488         chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
 489         decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
 490         chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
 491         if (runtime->format == SNDRV_PCM_FORMAT_S8)
 492                 chip->reg_control |= CTL_DA_SBR;
 493         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 494         spin_unlock_irq(&chip->reg_lock);
 495         return 0;
 496 }
 497
 498 static int snd_bt87x_start(struct snd_bt87x *chip)
 499 {
 500         spin_lock(&chip->reg_lock);
 501         chip->current_line = 0;
 502         chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
 503         snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
 504         snd_bt87x_writel(chip, REG_PACKET_LEN,
 505                          chip->line_bytes | (chip->lines << 16));
 506         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
 507         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 508         spin_unlock(&chip->reg_lock);
 509         return 0;
 510 }
 511
 512 static int snd_bt87x_stop(struct snd_bt87x *chip)
 513 {
 514         spin_lock(&chip->reg_lock);
 515         chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
 516         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 517         snd_bt87x_writel(chip, REG_INT_MASK, 0);
 518         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
 519         spin_unlock(&chip->reg_lock);
 520         return 0;
 521 }
 522
 523 static int snd_bt87x_trigger(struct snd_pcm_substream *substream, int cmd)
 524 {
 525         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 526
 527         switch (cmd) {
 528         case SNDRV_PCM_TRIGGER_START:
 529                 return snd_bt87x_start(chip);
 530         case SNDRV_PCM_TRIGGER_STOP:
 531                 return snd_bt87x_stop(chip);
 532         default:
 533                 return -EINVAL;
 534         }
 535 }
 536
 537 static snd_pcm_uframes_t snd_bt87x_pointer(struct snd_pcm_substream *substream)
 538 {
 539         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 540         struct snd_pcm_runtime *runtime = substream->runtime;
 541
 542         return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
 543 }
 544
 545 static struct snd_pcm_ops snd_bt87x_pcm_ops = {
 546         .open = snd_bt87x_pcm_open,
 547         .close = snd_bt87x_close,
 548         .ioctl = snd_pcm_lib_ioctl,
 549         .hw_params = snd_bt87x_hw_params,
 550         .hw_free = snd_bt87x_hw_free,
 551         .prepare = snd_bt87x_prepare,
 552         .trigger = snd_bt87x_trigger,
 553         .pointer = snd_bt87x_pointer,
 554         .page = snd_pcm_sgbuf_ops_page,
 555 };
 556
 557 static int snd_bt87x_capture_volume_info(struct snd_kcontrol *kcontrol,
 558                                          struct snd_ctl_elem_info *info)
 559 {
 560         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 561         info->count = 1;
 562         info->value.integer.min = 0;
 563         info->value.integer.max = 15;
 564         return 0;
 565 }
 566
 567 static int snd_bt87x_capture_volume_get(struct snd_kcontrol *kcontrol,
 568                                         struct snd_ctl_elem_value *value)
 569 {
 570         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 571
 572         value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
 573         return 0;
 574 }
 575
 576 static int snd_bt87x_capture_volume_put(struct snd_kcontrol *kcontrol,
 577                                         struct snd_ctl_elem_value *value)
 578 {
 579         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 580         u32 old_control;
 581         int changed;
 582
 583         spin_lock_irq(&chip->reg_lock);
 584         old_control = chip->reg_control;
 585         chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
 586                 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
 587         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 588         changed = old_control != chip->reg_control;
 589         spin_unlock_irq(&chip->reg_lock);
 590         return changed;
 591 }
 592
 593 static struct snd_kcontrol_new snd_bt87x_capture_volume = {
 594         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 595         .name = "Capture Volume",
 596         .info = snd_bt87x_capture_volume_info,
 597         .get = snd_bt87x_capture_volume_get,
 598         .put = snd_bt87x_capture_volume_put,
 599 };
 600
 601 #define snd_bt87x_capture_boost_info    snd_ctl_boolean_mono_info
 602
 603 static int snd_bt87x_capture_boost_get(struct snd_kcontrol *kcontrol,
 604                                        struct snd_ctl_elem_value *value)
 605 {
 606         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 607
 608         value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
 609         return 0;
 610 }
 611
 612 static int snd_bt87x_capture_boost_put(struct snd_kcontrol *kcontrol,
 613                                        struct snd_ctl_elem_value *value)
 614 {
 615         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 616         u32 old_control;
 617         int changed;
 618
 619         spin_lock_irq(&chip->reg_lock);
 620         old_control = chip->reg_control;
 621         chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
 622                 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
 623         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 624         changed = chip->reg_control != old_control;
 625         spin_unlock_irq(&chip->reg_lock);
 626         return changed;
 627 }
 628
 629 static struct snd_kcontrol_new snd_bt87x_capture_boost = {
 630         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 631         .name = "Capture Boost",
 632         .info = snd_bt87x_capture_boost_info,
 633         .get = snd_bt87x_capture_boost_get,
 634         .put = snd_bt87x_capture_boost_put,
 635 };
 636
 637 static int snd_bt87x_capture_source_info(struct snd_kcontrol *kcontrol,
 638                                          struct snd_ctl_elem_info *info)
 639 {
 640         static const char *const texts[3] = {"TV Tuner", "FM", "Mic/Line"};
 641
 642         return snd_ctl_enum_info(info, 1, 3, texts);
 643 }
 644
 645 static int snd_bt87x_capture_source_get(struct snd_kcontrol *kcontrol,
 646                                         struct snd_ctl_elem_value *value)
 647 {
 648         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 649
 650         value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
 651         return 0;
 652 }
 653
 654 static int snd_bt87x_capture_source_put(struct snd_kcontrol *kcontrol,
 655                                         struct snd_ctl_elem_value *value)
 656 {
 657         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 658         u32 old_control;
 659         int changed;
 660
 661         spin_lock_irq(&chip->reg_lock);
 662         old_control = chip->reg_control;
 663         chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
 664                 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
 665         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 666         changed = chip->reg_control != old_control;
 667         spin_unlock_irq(&chip->reg_lock);
 668         return changed;
 669 }
 670
 671 static struct snd_kcontrol_new snd_bt87x_capture_source = {
 672         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 673         .name = "Capture Source",
 674         .info = snd_bt87x_capture_source_info,
 675         .get = snd_bt87x_capture_source_get,
 676         .put = snd_bt87x_capture_source_put,
 677 };
 678
 679 static int snd_bt87x_free(struct snd_bt87x *chip)
 680 {
 681         if (chip->mmio)
 682                 snd_bt87x_stop(chip);
 683         if (chip->irq >= 0)
 684                 free_irq(chip->irq, chip);
 685         if (chip->mmio)
 686                 iounmap(chip->mmio);
 687         pci_release_regions(chip->pci);
 688         pci_disable_device(chip->pci);
 689         kfree(chip);
 690         return 0;
 691 }
 692
 693 static int snd_bt87x_dev_free(struct snd_device *device)
 694 {
 695         struct snd_bt87x *chip = device->device_data;
 696         return snd_bt87x_free(chip);
 697 }
 698
 699 static int __devinit snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name)
 700 {
 701         int err;
 702         struct snd_pcm *pcm;
 703
 704         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
 705         if (err < 0)
 706                 return err;
 707         pcm->private_data = chip;
 708         strcpy(pcm->name, name);
 709         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
 710         return snd_pcm_lib_preallocate_pages_for_all(pcm,
 711                                                      SNDRV_DMA_TYPE_DEV_SG,
 712                                                      snd_dma_pci_data(chip->pci),
 713                                                         128 * 1024,
 714                                                         ALIGN(255 * 4092, 1024));
 715 }
 716
 717 static int __devinit snd_bt87x_create(struct snd_card *card,
 718                                       struct pci_dev *pci,
 719                                       struct snd_bt87x **rchip)
 720 {
 721         struct snd_bt87x *chip;
 722         int err;
 723         static struct snd_device_ops ops = {
 724                 .dev_free = snd_bt87x_dev_free
 725         };
 726
 727         *rchip = NULL;
 728
 729         err = pci_enable_device(pci);
 730         if (err < 0)
 731                 return err;
 732
 733         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 734         if (!chip) {
 735                 pci_disable_device(pci);
 736                 return -ENOMEM;
 737         }
 738         chip->card = card;
 739         chip->pci = pci;
 740         chip->irq = -1;
 741         spin_lock_init(&chip->reg_lock);
 742
 743         if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
 744                 kfree(chip);
 745                 pci_disable_device(pci);
 746                 return err;
 747         }
 748         chip->mmio = pci_ioremap_bar(pci, 0);
 749         if (!chip->mmio) {
 750                 snd_printk(KERN_ERR "cannot remap io memory\n");
 751                 err = -ENOMEM;
 752                 goto fail;
 753         }
 754
 755         chip->reg_control = CTL_A_PWRDN | CTL_DA_ES2 |
 756                             CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
 757         chip->interrupt_mask = MY_INTERRUPTS;
 758         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 759         snd_bt87x_writel(chip, REG_INT_MASK, 0);
 760         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
 761
 762         err = request_irq(pci->irq, snd_bt87x_interrupt, IRQF_SHARED,
 763                           KBUILD_MODNAME, chip);
 764         if (err < 0) {
 765                 snd_printk(KERN_ERR "cannot grab irq %d\n", pci->irq);
 766                 goto fail;
 767         }
 768         chip->irq = pci->irq;
 769         pci_set_master(pci);
 770         synchronize_irq(chip->irq);
 771
 772         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 773         if (err < 0)
 774                 goto fail;
 775
 776         snd_card_set_dev(card, &pci->dev);
 777         *rchip = chip;
 778         return 0;
 779
 780 fail:
 781         snd_bt87x_free(chip);
 782         return err;
 783 }
 784
 785 #define BT_DEVICE(chip, subvend, subdev, id) \
 786         { .vendor = PCI_VENDOR_ID_BROOKTREE, \
 787           .device = chip, \
 788           .subvendor = subvend, .subdevice = subdev, \
 789           .driver_data = SND_BT87X_BOARD_ ## id }
 790 /* driver_data is the card id for that device */
 791
 792 static DEFINE_PCI_DEVICE_TABLE(snd_bt87x_ids) = {
 793         /* Hauppauge WinTV series */
 794         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, GENERIC),
 795         /* Hauppauge WinTV series */
 796         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, GENERIC),
 797         /* Viewcast Osprey 200 */
 798         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, OSPREY2x0),
 799         /* Viewcast Osprey 440 (rate is configurable via gpio) */
 800         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff07, OSPREY440),
 801         /* ATI TV-Wonder */
 802         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1002, 0x0001, GENERIC),
 803         /* Leadtek Winfast tv 2000xp delux */
 804         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x107d, 0x6606, GENERIC),
 805         /* Pinnacle PCTV */
 806         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x11bd, 0x0012, GENERIC),
 807         /* Voodoo TV 200 */
 808         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x121a, 0x3000, GENERIC),
 809         /* Askey Computer Corp. MagicTView'99 */
 810         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x144f, 0x3000, GENERIC),
 811         /* AVerMedia Studio No. 103, 203, ...? */
 812         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1461, 0x0003, AVPHONE98),
 813         /* Prolink PixelView PV-M4900 */
 814         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1554, 0x4011, GENERIC),
 815         /* Pinnacle  Studio PCTV rave */
 816         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0xbd11, 0x1200, GENERIC),
 817         { }
 818 };
 819 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
 820
 821 /* cards known not to have audio
 822  * (DVB cards use the audio function to transfer MPEG data) */
 823 static struct {
 824         unsigned short subvendor, subdevice;
 825 } blacklist[] __devinitdata = {
 826         {0x0071, 0x0101}, /* Nebula Electronics DigiTV */
 827         {0x11bd, 0x001c}, /* Pinnacle PCTV Sat */
 828         {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
 829         {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */
 830         {0x1461, 0x0771}, /* AVermedia DVB-T 771 */
 831         {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */
 832         {0x18ac, 0xd500}, /* DVICO FusionHDTV 5 Lite */
 833         {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */
 834         {0x18ac, 0xdb11}, /* Ultraview DVB-T Lite */
 835         {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */
 836         {0x7063, 0x2000}, /* pcHDTV HD-2000 TV */
 837 };
 838
 839 static struct pci_driver driver;
 840
 841 /* return the id of the card, or a negative value if it's blacklisted */
 842 static int __devinit snd_bt87x_detect_card(struct pci_dev *pci)
 843 {
 844         int i;
 845         const struct pci_device_id *supported;
 846
 847         supported = pci_match_id(snd_bt87x_ids, pci);
 848         if (supported && supported->driver_data > 0)
 849                 return supported->driver_data;
 850
 851         for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
 852                 if (blacklist[i].subvendor == pci->subsystem_vendor &&
 853                     blacklist[i].subdevice == pci->subsystem_device) {
 854                         snd_printdd(KERN_INFO "card %#04x-%#04x:%#04x has no audio\n",
 855                                     pci->device, pci->subsystem_vendor, pci->subsystem_device);
 856                         return -EBUSY;
 857                 }
 858
 859         snd_printk(KERN_INFO "unknown card %#04x-%#04x:%#04x\n",
 860                    pci->device, pci->subsystem_vendor, pci->subsystem_device);
 861         snd_printk(KERN_DEBUG "please mail id, board name, and, "
 862                    "if it works, the correct digital_rate option to "
 863                    "<alsa-devel@alsa-project.org>\n");
 864         return SND_BT87X_BOARD_UNKNOWN;
 865 }
 866
 867 static int __devinit snd_bt87x_probe(struct pci_dev *pci,
 868                                      const struct pci_device_id *pci_id)
 869 {
 870         static int dev;
 871         struct snd_card *card;
 872         struct snd_bt87x *chip;
 873         int err;
 874         enum snd_bt87x_boardid boardid;
 875
 876         if (!pci_id->driver_data) {
 877                 err = snd_bt87x_detect_card(pci);
 878                 if (err < 0)
 879                         return -ENODEV;
 880                 boardid = err;
 881         } else
 882                 boardid = pci_id->driver_data;
 883
 884         if (dev >= SNDRV_CARDS)
 885                 return -ENODEV;
 886         if (!enable[dev]) {
 887                 ++dev;
 888                 return -ENOENT;
 889         }
 890
 891         err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
 892         if (err < 0)
 893                 return err;
 894
 895         err = snd_bt87x_create(card, pci, &chip);
 896         if (err < 0)
 897                 goto _error;
 898
 899         memcpy(&chip->board, &snd_bt87x_boards[boardid], sizeof(chip->board));
 900
 901         if (!chip->board.no_digital) {
 902                 if (digital_rate[dev] > 0)
 903                         chip->board.dig_rate = digital_rate[dev];
 904
 905                 chip->reg_control |= chip->board.digital_fmt;
 906
 907                 err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
 908                 if (err < 0)
 909                         goto _error;
 910         }
 911         if (!chip->board.no_analog) {
 912                 err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
 913                 if (err < 0)
 914                         goto _error;
 915                 err = snd_ctl_add(card, snd_ctl_new1(
 916                                   &snd_bt87x_capture_volume, chip));
 917                 if (err < 0)
 918                         goto _error;
 919                 err = snd_ctl_add(card, snd_ctl_new1(
 920                                   &snd_bt87x_capture_boost, chip));
 921                 if (err < 0)
 922                         goto _error;
 923                 err = snd_ctl_add(card, snd_ctl_new1(
 924                                   &snd_bt87x_capture_source, chip));
 925                 if (err < 0)
 926                         goto _error;
 927         }
 928         snd_printk(KERN_INFO "bt87x%d: Using board %d, %sanalog, %sdigital "
 929                    "(rate %d Hz)\n", dev, boardid,
 930                    chip->board.no_analog ? "no " : "",
 931                    chip->board.no_digital ? "no " : "", chip->board.dig_rate);
 932
 933         strcpy(card->driver, "Bt87x");
 934         sprintf(card->shortname, "Brooktree Bt%x", pci->device);
 935         sprintf(card->longname, "%s at %#llx, irq %i",
 936                 card->shortname, (unsigned long long)pci_resource_start(pci, 0),
 937                 chip->irq);
 938         strcpy(card->mixername, "Bt87x");
 939
 940         err = snd_card_register(card);
 941         if (err < 0)
 942                 goto _error;
 943
 944         pci_set_drvdata(pci, card);
 945         ++dev;
 946         return 0;
 947
 948 _error:
 949         snd_card_free(card);
 950         return err;
 951 }
 952
 953 static void __devexit snd_bt87x_remove(struct pci_dev *pci)
 954 {
 955         snd_card_free(pci_get_drvdata(pci));
 956         pci_set_drvdata(pci, NULL);
 957 }
 958
 959 /* default entries for all Bt87x cards - it's not exported */
 960 /* driver_data is set to 0 to call detection */
 961 static DEFINE_PCI_DEVICE_TABLE(snd_bt87x_default_ids) = {
 962         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN),
 963         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN),
 964         { }
 965 };
 966
 967 static struct pci_driver driver = {
 968         .name = KBUILD_MODNAME,
 969         .id_table = snd_bt87x_ids,
 970         .probe = snd_bt87x_probe,
 971         .remove = __devexit_p(snd_bt87x_remove),
 972 };
 973
 974 static int __init alsa_card_bt87x_init(void)
 975 {
 976         if (load_all)
 977                 driver.id_table = snd_bt87x_default_ids;
 978         return pci_register_driver(&driver);
 979 }
 980
 981 static void __exit alsa_card_bt87x_exit(void)
 982 {
 983         pci_unregister_driver(&driver);
 984 }
 985
 986 module_init(alsa_card_bt87x_init)
 987 module_exit(alsa_card_bt87x_exit)