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