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 struct snd_bt87x {
 151         struct snd_card *card;
 152         struct pci_dev *pci;
 153
 154         void __iomem *mmio;
 155         int irq;
 156
 157         int dig_rate;
 158
 159         spinlock_t reg_lock;
 160         unsigned long opened;
 161         struct snd_pcm_substream *substream;
 162
 163         struct snd_dma_buffer dma_risc;
 164         unsigned int line_bytes;
 165         unsigned int lines;
 166
 167         u32 reg_control;
 168         u32 interrupt_mask;
 169
 170         int current_line;
 171
 172         int pci_parity_errors;
 173 };
 174
 175 enum { DEVICE_DIGITAL, DEVICE_ANALOG };
 176
 177 static inline u32 snd_bt87x_readl(struct snd_bt87x *chip, u32 reg)
 178 {
 179         return readl(chip->mmio + reg);
 180 }
 181
 182 static inline void snd_bt87x_writel(struct snd_bt87x *chip, u32 reg, u32 value)
 183 {
 184         writel(value, chip->mmio + reg);
 185 }
 186
 187 static int snd_bt87x_create_risc(struct snd_bt87x *chip, struct snd_pcm_substream *substream,
 188                                  unsigned int periods, unsigned int period_bytes)
 189 {
 190         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
 191         unsigned int i, offset;
 192         u32 *risc;
 193
 194         if (chip->dma_risc.area == NULL) {
 195                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 196                                         PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
 197                         return -ENOMEM;
 198         }
 199         risc = (u32 *)chip->dma_risc.area;
 200         offset = 0;
 201         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
 202         *risc++ = cpu_to_le32(0);
 203         for (i = 0; i < periods; ++i) {
 204                 u32 rest;
 205
 206                 rest = period_bytes;
 207                 do {
 208                         u32 cmd, len;
 209
 210                         len = PAGE_SIZE - (offset % PAGE_SIZE);
 211                         if (len > rest)
 212                                 len = rest;
 213                         cmd = RISC_WRITE | len;
 214                         if (rest == period_bytes) {
 215                                 u32 block = i * 16 / periods;
 216                                 cmd |= RISC_SOL;
 217                                 cmd |= block << RISC_SET_STATUS_SHIFT;
 218                                 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
 219                         }
 220                         if (len == rest)
 221                                 cmd |= RISC_EOL | RISC_IRQ;
 222                         *risc++ = cpu_to_le32(cmd);
 223                         *risc++ = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, offset));
 224                         offset += len;
 225                         rest -= len;
 226                 } while (rest > 0);
 227         }
 228         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
 229         *risc++ = cpu_to_le32(0);
 230         *risc++ = cpu_to_le32(RISC_JUMP);
 231         *risc++ = cpu_to_le32(chip->dma_risc.addr);
 232         chip->line_bytes = period_bytes;
 233         chip->lines = periods;
 234         return 0;
 235 }
 236
 237 static void snd_bt87x_free_risc(struct snd_bt87x *chip)
 238 {
 239         if (chip->dma_risc.area) {
 240                 snd_dma_free_pages(&chip->dma_risc);
 241                 chip->dma_risc.area = NULL;
 242         }
 243 }
 244
 245 static void snd_bt87x_pci_error(struct snd_bt87x *chip, unsigned int status)
 246 {
 247         u16 pci_status;
 248
 249         pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
 250         pci_status &= PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
 251                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
 252                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY;
 253         pci_write_config_word(chip->pci, PCI_STATUS, pci_status);
 254         if (pci_status != PCI_STATUS_DETECTED_PARITY)
 255                 snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
 256                            status & ERROR_INTERRUPTS, pci_status);
 257         else {
 258                 snd_printk(KERN_ERR "Aieee - PCI parity error detected!\n");
 259                 /* error 'handling' similar to aic7xxx_pci.c: */
 260                 chip->pci_parity_errors++;
 261                 if (chip->pci_parity_errors > 20) {
 262                         snd_printk(KERN_ERR "Too many PCI parity errors observed.\n");
 263                         snd_printk(KERN_ERR "Some device on this bus is generating bad parity.\n");
 264                         snd_printk(KERN_ERR "This is an error *observed by*, not *generated by*, this card.\n");
 265                         snd_printk(KERN_ERR "PCI parity error checking has been disabled.\n");
 266                         chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR);
 267                         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
 268                 }
 269         }
 270 }
 271
 272 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id)
 273 {
 274         struct snd_bt87x *chip = dev_id;
 275         unsigned int status, irq_status;
 276
 277         status = snd_bt87x_readl(chip, REG_INT_STAT);
 278         irq_status = status & chip->interrupt_mask;
 279         if (!irq_status)
 280                 return IRQ_NONE;
 281         snd_bt87x_writel(chip, REG_INT_STAT, irq_status);
 282
 283         if (irq_status & ERROR_INTERRUPTS) {
 284                 if (irq_status & (INT_FBUS | INT_FTRGT))
 285                         snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
 286                 if (irq_status & INT_OCERR)
 287                         snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
 288                 if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT))
 289                         snd_bt87x_pci_error(chip, irq_status);
 290         }
 291         if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) {
 292                 int current_block, irq_block;
 293
 294                 /* assume that exactly one line has been recorded */
 295                 chip->current_line = (chip->current_line + 1) % chip->lines;
 296                 /* but check if some interrupts have been skipped */
 297                 current_block = chip->current_line * 16 / chip->lines;
 298                 irq_block = status >> INT_RISCS_SHIFT;
 299                 if (current_block != irq_block)
 300                         chip->current_line = (irq_block * chip->lines + 15) / 16;
 301
 302                 snd_pcm_period_elapsed(chip->substream);
 303         }
 304         return IRQ_HANDLED;
 305 }
 306
 307 static struct snd_pcm_hardware snd_bt87x_digital_hw = {
 308         .info = SNDRV_PCM_INFO_MMAP |
 309                 SNDRV_PCM_INFO_INTERLEAVED |
 310                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 311                 SNDRV_PCM_INFO_MMAP_VALID,
 312         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 313         .rates = 0, /* set at runtime */
 314         .channels_min = 2,
 315         .channels_max = 2,
 316         .buffer_bytes_max = 255 * 4092,
 317         .period_bytes_min = 32,
 318         .period_bytes_max = 4092,
 319         .periods_min = 2,
 320         .periods_max = 255,
 321 };
 322
 323 static struct snd_pcm_hardware snd_bt87x_analog_hw = {
 324         .info = SNDRV_PCM_INFO_MMAP |
 325                 SNDRV_PCM_INFO_INTERLEAVED |
 326                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 327                 SNDRV_PCM_INFO_MMAP_VALID,
 328         .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
 329         .rates = SNDRV_PCM_RATE_KNOT,
 330         .rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX,
 331         .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN,
 332         .channels_min = 1,
 333         .channels_max = 1,
 334         .buffer_bytes_max = 255 * 4092,
 335         .period_bytes_min = 32,
 336         .period_bytes_max = 4092,
 337         .periods_min = 2,
 338         .periods_max = 255,
 339 };
 340
 341 static int snd_bt87x_set_digital_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
 342 {
 343         static struct {
 344                 int rate;
 345                 unsigned int bit;
 346         } ratebits[] = {
 347                 {8000, SNDRV_PCM_RATE_8000},
 348                 {11025, SNDRV_PCM_RATE_11025},
 349                 {16000, SNDRV_PCM_RATE_16000},
 350                 {22050, SNDRV_PCM_RATE_22050},
 351                 {32000, SNDRV_PCM_RATE_32000},
 352                 {44100, SNDRV_PCM_RATE_44100},
 353                 {48000, SNDRV_PCM_RATE_48000}
 354         };
 355         int i;
 356
 357         chip->reg_control |= CTL_DA_IOM_DA;
 358         runtime->hw = snd_bt87x_digital_hw;
 359         runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
 360         for (i = 0; i < ARRAY_SIZE(ratebits); ++i)
 361                 if (chip->dig_rate == ratebits[i].rate) {
 362                         runtime->hw.rates = ratebits[i].bit;
 363                         break;
 364                 }
 365         runtime->hw.rate_min = chip->dig_rate;
 366         runtime->hw.rate_max = chip->dig_rate;
 367         return 0;
 368 }
 369
 370 static int snd_bt87x_set_analog_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
 371 {
 372         static struct snd_ratnum analog_clock = {
 373                 .num = ANALOG_CLOCK,
 374                 .den_min = CLOCK_DIV_MIN,
 375                 .den_max = CLOCK_DIV_MAX,
 376                 .den_step = 1
 377         };
 378         static struct snd_pcm_hw_constraint_ratnums constraint_rates = {
 379                 .nrats = 1,
 380                 .rats = &analog_clock
 381         };
 382
 383         chip->reg_control &= ~CTL_DA_IOM_DA;
 384         runtime->hw = snd_bt87x_analog_hw;
 385         return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 386                                              &constraint_rates);
 387 }
 388
 389 static int snd_bt87x_pcm_open(struct snd_pcm_substream *substream)
 390 {
 391         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 392         struct snd_pcm_runtime *runtime = substream->runtime;
 393         int err;
 394
 395         if (test_and_set_bit(0, &chip->opened))
 396                 return -EBUSY;
 397
 398         if (substream->pcm->device == DEVICE_DIGITAL)
 399                 err = snd_bt87x_set_digital_hw(chip, runtime);
 400         else
 401                 err = snd_bt87x_set_analog_hw(chip, runtime);
 402         if (err < 0)
 403                 goto _error;
 404
 405         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
 406         if (err < 0)
 407                 goto _error;
 408
 409         chip->substream = substream;
 410         return 0;
 411
 412 _error:
 413         clear_bit(0, &chip->opened);
 414         smp_mb__after_clear_bit();
 415         return err;
 416 }
 417
 418 static int snd_bt87x_close(struct snd_pcm_substream *substream)
 419 {
 420         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 421
 422         chip->substream = NULL;
 423         clear_bit(0, &chip->opened);
 424         smp_mb__after_clear_bit();
 425         return 0;
 426 }
 427
 428 static int snd_bt87x_hw_params(struct snd_pcm_substream *substream,
 429                                struct snd_pcm_hw_params *hw_params)
 430 {
 431         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 432         int err;
 433
 434         err = snd_pcm_lib_malloc_pages(substream,
 435                                        params_buffer_bytes(hw_params));
 436         if (err < 0)
 437                 return err;
 438         return snd_bt87x_create_risc(chip, substream,
 439                                      params_periods(hw_params),
 440                                      params_period_bytes(hw_params));
 441 }
 442
 443 static int snd_bt87x_hw_free(struct snd_pcm_substream *substream)
 444 {
 445         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 446
 447         snd_bt87x_free_risc(chip);
 448         snd_pcm_lib_free_pages(substream);
 449         return 0;
 450 }
 451
 452 static int snd_bt87x_prepare(struct snd_pcm_substream *substream)
 453 {
 454         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 455         struct snd_pcm_runtime *runtime = substream->runtime;
 456         int decimation;
 457
 458         spin_lock_irq(&chip->reg_lock);
 459         chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
 460         decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
 461         chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
 462         if (runtime->format == SNDRV_PCM_FORMAT_S8)
 463                 chip->reg_control |= CTL_DA_SBR;
 464         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 465         spin_unlock_irq(&chip->reg_lock);
 466         return 0;
 467 }
 468
 469 static int snd_bt87x_start(struct snd_bt87x *chip)
 470 {
 471         spin_lock(&chip->reg_lock);
 472         chip->current_line = 0;
 473         chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
 474         snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
 475         snd_bt87x_writel(chip, REG_PACKET_LEN,
 476                          chip->line_bytes | (chip->lines << 16));
 477         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
 478         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 479         spin_unlock(&chip->reg_lock);
 480         return 0;
 481 }
 482
 483 static int snd_bt87x_stop(struct snd_bt87x *chip)
 484 {
 485         spin_lock(&chip->reg_lock);
 486         chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
 487         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 488         snd_bt87x_writel(chip, REG_INT_MASK, 0);
 489         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
 490         spin_unlock(&chip->reg_lock);
 491         return 0;
 492 }
 493
 494 static int snd_bt87x_trigger(struct snd_pcm_substream *substream, int cmd)
 495 {
 496         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 497
 498         switch (cmd) {
 499         case SNDRV_PCM_TRIGGER_START:
 500                 return snd_bt87x_start(chip);
 501         case SNDRV_PCM_TRIGGER_STOP:
 502                 return snd_bt87x_stop(chip);
 503         default:
 504                 return -EINVAL;
 505         }
 506 }
 507
 508 static snd_pcm_uframes_t snd_bt87x_pointer(struct snd_pcm_substream *substream)
 509 {
 510         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 511         struct snd_pcm_runtime *runtime = substream->runtime;
 512
 513         return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
 514 }
 515
 516 static struct snd_pcm_ops snd_bt87x_pcm_ops = {
 517         .open = snd_bt87x_pcm_open,
 518         .close = snd_bt87x_close,
 519         .ioctl = snd_pcm_lib_ioctl,
 520         .hw_params = snd_bt87x_hw_params,
 521         .hw_free = snd_bt87x_hw_free,
 522         .prepare = snd_bt87x_prepare,
 523         .trigger = snd_bt87x_trigger,
 524         .pointer = snd_bt87x_pointer,
 525         .page = snd_pcm_sgbuf_ops_page,
 526 };
 527
 528 static int snd_bt87x_capture_volume_info(struct snd_kcontrol *kcontrol,
 529                                          struct snd_ctl_elem_info *info)
 530 {
 531         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 532         info->count = 1;
 533         info->value.integer.min = 0;
 534         info->value.integer.max = 15;
 535         return 0;
 536 }
 537
 538 static int snd_bt87x_capture_volume_get(struct snd_kcontrol *kcontrol,
 539                                         struct snd_ctl_elem_value *value)
 540 {
 541         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 542
 543         value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
 544         return 0;
 545 }
 546
 547 static int snd_bt87x_capture_volume_put(struct snd_kcontrol *kcontrol,
 548                                         struct snd_ctl_elem_value *value)
 549 {
 550         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 551         u32 old_control;
 552         int changed;
 553
 554         spin_lock_irq(&chip->reg_lock);
 555         old_control = chip->reg_control;
 556         chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
 557                 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
 558         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 559         changed = old_control != chip->reg_control;
 560         spin_unlock_irq(&chip->reg_lock);
 561         return changed;
 562 }
 563
 564 static struct snd_kcontrol_new snd_bt87x_capture_volume = {
 565         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 566         .name = "Capture Volume",
 567         .info = snd_bt87x_capture_volume_info,
 568         .get = snd_bt87x_capture_volume_get,
 569         .put = snd_bt87x_capture_volume_put,
 570 };
 571
 572 #define snd_bt87x_capture_boost_info    snd_ctl_boolean_mono_info
 573
 574 static int snd_bt87x_capture_boost_get(struct snd_kcontrol *kcontrol,
 575                                        struct snd_ctl_elem_value *value)
 576 {
 577         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 578
 579         value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
 580         return 0;
 581 }
 582
 583 static int snd_bt87x_capture_boost_put(struct snd_kcontrol *kcontrol,
 584                                        struct snd_ctl_elem_value *value)
 585 {
 586         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 587         u32 old_control;
 588         int changed;
 589
 590         spin_lock_irq(&chip->reg_lock);
 591         old_control = chip->reg_control;
 592         chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
 593                 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
 594         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 595         changed = chip->reg_control != old_control;
 596         spin_unlock_irq(&chip->reg_lock);
 597         return changed;
 598 }
 599
 600 static struct snd_kcontrol_new snd_bt87x_capture_boost = {
 601         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 602         .name = "Capture Boost",
 603         .info = snd_bt87x_capture_boost_info,
 604         .get = snd_bt87x_capture_boost_get,
 605         .put = snd_bt87x_capture_boost_put,
 606 };
 607
 608 static int snd_bt87x_capture_source_info(struct snd_kcontrol *kcontrol,
 609                                          struct snd_ctl_elem_info *info)
 610 {
 611         static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"};
 612
 613         info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 614         info->count = 1;
 615         info->value.enumerated.items = 3;
 616         if (info->value.enumerated.item > 2)
 617                 info->value.enumerated.item = 2;
 618         strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]);
 619         return 0;
 620 }
 621
 622 static int snd_bt87x_capture_source_get(struct snd_kcontrol *kcontrol,
 623                                         struct snd_ctl_elem_value *value)
 624 {
 625         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 626
 627         value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
 628         return 0;
 629 }
 630
 631 static int snd_bt87x_capture_source_put(struct snd_kcontrol *kcontrol,
 632                                         struct snd_ctl_elem_value *value)
 633 {
 634         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 635         u32 old_control;
 636         int changed;
 637
 638         spin_lock_irq(&chip->reg_lock);
 639         old_control = chip->reg_control;
 640         chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
 641                 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
 642         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 643         changed = chip->reg_control != old_control;
 644         spin_unlock_irq(&chip->reg_lock);
 645         return changed;
 646 }
 647
 648 static struct snd_kcontrol_new snd_bt87x_capture_source = {
 649         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 650         .name = "Capture Source",
 651         .info = snd_bt87x_capture_source_info,
 652         .get = snd_bt87x_capture_source_get,
 653         .put = snd_bt87x_capture_source_put,
 654 };
 655
 656 static int snd_bt87x_free(struct snd_bt87x *chip)
 657 {
 658         if (chip->mmio) {
 659                 snd_bt87x_stop(chip);
 660                 if (chip->irq >= 0)
 661                         synchronize_irq(chip->irq);
 662
 663                 iounmap(chip->mmio);
 664         }
 665         if (chip->irq >= 0)
 666                 free_irq(chip->irq, chip);
 667         pci_release_regions(chip->pci);
 668         pci_disable_device(chip->pci);
 669         kfree(chip);
 670         return 0;
 671 }
 672
 673 static int snd_bt87x_dev_free(struct snd_device *device)
 674 {
 675         struct snd_bt87x *chip = device->device_data;
 676         return snd_bt87x_free(chip);
 677 }
 678
 679 static int __devinit snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name)
 680 {
 681         int err;
 682         struct snd_pcm *pcm;
 683
 684         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
 685         if (err < 0)
 686                 return err;
 687         pcm->private_data = chip;
 688         strcpy(pcm->name, name);
 689         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
 690         return snd_pcm_lib_preallocate_pages_for_all(pcm,
 691                                                      SNDRV_DMA_TYPE_DEV_SG,
 692                                                      snd_dma_pci_data(chip->pci),
 693                                                         128 * 1024,
 694                                                         ALIGN(255 * 4092, 1024));
 695 }
 696
 697 static int __devinit snd_bt87x_create(struct snd_card *card,
 698                                       struct pci_dev *pci,
 699                                       struct snd_bt87x **rchip)
 700 {
 701         struct snd_bt87x *chip;
 702         int err;
 703         static struct snd_device_ops ops = {
 704                 .dev_free = snd_bt87x_dev_free
 705         };
 706
 707         *rchip = NULL;
 708
 709         err = pci_enable_device(pci);
 710         if (err < 0)
 711                 return err;
 712
 713         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 714         if (!chip) {
 715                 pci_disable_device(pci);
 716                 return -ENOMEM;
 717         }
 718         chip->card = card;
 719         chip->pci = pci;
 720         chip->irq = -1;
 721         spin_lock_init(&chip->reg_lock);
 722
 723         if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
 724                 kfree(chip);
 725                 pci_disable_device(pci);
 726                 return err;
 727         }
 728         chip->mmio = ioremap_nocache(pci_resource_start(pci, 0),
 729                                      pci_resource_len(pci, 0));
 730         if (!chip->mmio) {
 731                 snd_bt87x_free(chip);
 732                 snd_printk(KERN_ERR "cannot remap io memory\n");
 733                 return -ENOMEM;
 734         }
 735
 736         chip->reg_control = CTL_DA_ES2 | CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
 737         chip->interrupt_mask = MY_INTERRUPTS;
 738         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 739         snd_bt87x_writel(chip, REG_INT_MASK, 0);
 740         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
 741
 742         if (request_irq(pci->irq, snd_bt87x_interrupt, IRQF_SHARED,
 743                         "Bt87x audio", chip)) {
 744                 snd_bt87x_free(chip);
 745                 snd_printk(KERN_ERR "cannot grab irq\n");
 746                 return -EBUSY;
 747         }
 748         chip->irq = pci->irq;
 749         pci_set_master(pci);
 750         synchronize_irq(chip->irq);
 751
 752         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 753         if (err < 0) {
 754                 snd_bt87x_free(chip);
 755                 return err;
 756         }
 757         snd_card_set_dev(card, &pci->dev);
 758         *rchip = chip;
 759         return 0;
 760 }
 761
 762 #define BT_DEVICE(chip, subvend, subdev, rate) \
 763         { .vendor = PCI_VENDOR_ID_BROOKTREE, \
 764           .device = chip, \
 765           .subvendor = subvend, .subdevice = subdev, \
 766           .driver_data = rate }
 767
 768 /* driver_data is the default digital_rate value for that device */
 769 static struct pci_device_id snd_bt87x_ids[] = {
 770         /* Hauppauge WinTV series */
 771         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, 32000),
 772         /* Hauppauge WinTV series */
 773         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, 32000),
 774         /* Viewcast Osprey 200 */
 775         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, 44100),
 776         /* Viewcast Osprey 440 (rate is configurable via gpio) */
 777         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff07, 32000),
 778         /* ATI TV-Wonder */
 779         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1002, 0x0001, 32000),
 780         /* Leadtek Winfast tv 2000xp delux */
 781         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x107d, 0x6606, 32000),
 782         /* Voodoo TV 200 */
 783         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x121a, 0x3000, 32000),
 784         /* AVerMedia Studio No. 103, 203, ...? */
 785         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1461, 0x0003, 48000),
 786         { }
 787 };
 788 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
 789
 790 /* cards known not to have audio
 791  * (DVB cards use the audio function to transfer MPEG data) */
 792 static struct {
 793         unsigned short subvendor, subdevice;
 794 } blacklist[] __devinitdata = {
 795         {0x0071, 0x0101}, /* Nebula Electronics DigiTV */
 796         {0x11bd, 0x001c}, /* Pinnacle PCTV Sat */
 797         {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
 798         {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */
 799         {0x1461, 0x0771}, /* AVermedia DVB-T 771 */
 800         {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */
 801         {0x18ac, 0xd500}, /* DVICO FusionHDTV 5 Lite */
 802         {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */
 803         {0x18ac, 0xdb11}, /* Ultraview DVB-T Lite */
 804         {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */
 805         {0x7063, 0x2000}, /* pcHDTV HD-2000 TV */
 806 };
 807
 808 static struct pci_driver driver;
 809
 810 /* return the rate of the card, or a negative value if it's blacklisted */
 811 static int __devinit snd_bt87x_detect_card(struct pci_dev *pci)
 812 {
 813         int i;
 814         const struct pci_device_id *supported;
 815
 816         supported = pci_match_device(&driver, pci);
 817         if (supported && supported->driver_data > 0)
 818                 return supported->driver_data;
 819
 820         for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
 821                 if (blacklist[i].subvendor == pci->subsystem_vendor &&
 822                     blacklist[i].subdevice == pci->subsystem_device) {
 823                         snd_printdd(KERN_INFO "card %#04x-%#04x:%#04x has no audio\n",
 824                                     pci->device, pci->subsystem_vendor, pci->subsystem_device);
 825                         return -EBUSY;
 826                 }
 827
 828         snd_printk(KERN_INFO "unknown card %#04x-%#04x:%#04x, using default rate 32000\n",
 829                    pci->device, pci->subsystem_vendor, pci->subsystem_device);
 830         snd_printk(KERN_DEBUG "please mail id, board name, and, "
 831                    "if it works, the correct digital_rate option to "
 832                    "<alsa-devel@alsa-project.org>\n");
 833         return 32000; /* default rate */
 834 }
 835
 836 static int __devinit snd_bt87x_probe(struct pci_dev *pci,
 837                                      const struct pci_device_id *pci_id)
 838 {
 839         static int dev;
 840         struct snd_card *card;
 841         struct snd_bt87x *chip;
 842         int err, rate;
 843
 844         rate = pci_id->driver_data;
 845         if (! rate)
 846                 if ((rate = snd_bt87x_detect_card(pci)) <= 0)
 847                         return -ENODEV;
 848
 849         if (dev >= SNDRV_CARDS)
 850                 return -ENODEV;
 851         if (!enable[dev]) {
 852                 ++dev;
 853                 return -ENOENT;
 854         }
 855
 856         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
 857         if (!card)
 858                 return -ENOMEM;
 859
 860         err = snd_bt87x_create(card, pci, &chip);
 861         if (err < 0)
 862                 goto _error;
 863
 864         if (digital_rate[dev] > 0)
 865                 chip->dig_rate = digital_rate[dev];
 866         else
 867                 chip->dig_rate = rate;
 868
 869         err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
 870         if (err < 0)
 871                 goto _error;
 872         err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
 873         if (err < 0)
 874                 goto _error;
 875
 876         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_volume, chip));
 877         if (err < 0)
 878                 goto _error;
 879         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_boost, chip));
 880         if (err < 0)
 881                 goto _error;
 882         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_source, chip));
 883         if (err < 0)
 884                 goto _error;
 885
 886         strcpy(card->driver, "Bt87x");
 887         sprintf(card->shortname, "Brooktree Bt%x", pci->device);
 888         sprintf(card->longname, "%s at %#llx, irq %i",
 889                 card->shortname, (unsigned long long)pci_resource_start(pci, 0),
 890                 chip->irq);
 891         strcpy(card->mixername, "Bt87x");
 892
 893         err = snd_card_register(card);
 894         if (err < 0)
 895                 goto _error;
 896
 897         pci_set_drvdata(pci, card);
 898         ++dev;
 899         return 0;
 900
 901 _error:
 902         snd_card_free(card);
 903         return err;
 904 }
 905
 906 static void __devexit snd_bt87x_remove(struct pci_dev *pci)
 907 {
 908         snd_card_free(pci_get_drvdata(pci));
 909         pci_set_drvdata(pci, NULL);
 910 }
 911
 912 /* default entries for all Bt87x cards - it's not exported */
 913 /* driver_data is set to 0 to call detection */
 914 static struct pci_device_id snd_bt87x_default_ids[] __devinitdata = {
 915         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, PCI_ANY_ID, PCI_ANY_ID, 0),
 916         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, PCI_ANY_ID, PCI_ANY_ID, 0),
 917         { }
 918 };
 919
 920 static struct pci_driver driver = {
 921         .name = "Bt87x",
 922         .id_table = snd_bt87x_ids,
 923         .probe = snd_bt87x_probe,
 924         .remove = __devexit_p(snd_bt87x_remove),
 925 };
 926
 927 static int __init alsa_card_bt87x_init(void)
 928 {
 929         if (load_all)
 930                 driver.id_table = snd_bt87x_default_ids;
 931         return pci_register_driver(&driver);
 932 }
 933
 934 static void __exit alsa_card_bt87x_exit(void)
 935 {
 936         pci_unregister_driver(&driver);
 937 }
 938
 939 module_init(alsa_card_bt87x_init)
 940 module_exit(alsa_card_bt87x_exit)