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] = { [0 ... (SNDRV_CARDS-1)] = 0 }; /* 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 typedef struct snd_bt87x bt87x_t;
 151 struct snd_bt87x {
 152         snd_card_t *card;
 153         struct pci_dev *pci;
 154
 155         void __iomem *mmio;
 156         int irq;
 157
 158         int dig_rate;
 159
 160         spinlock_t reg_lock;
 161         long opened;
 162         snd_pcm_substream_t *substream;
 163
 164         struct snd_dma_buffer dma_risc;
 165         unsigned int line_bytes;
 166         unsigned int lines;
 167
 168         u32 reg_control;
 169         u32 interrupt_mask;
 170
 171         int current_line;
 172
 173         int pci_parity_errors;
 174 };
 175
 176 enum { DEVICE_DIGITAL, DEVICE_ANALOG };
 177
 178 static inline u32 snd_bt87x_readl(bt87x_t *chip, u32 reg)
 179 {
 180         return readl(chip->mmio + reg);
 181 }
 182
 183 static inline void snd_bt87x_writel(bt87x_t *chip, u32 reg, u32 value)
 184 {
 185         writel(value, chip->mmio + reg);
 186 }
 187
 188 static int snd_bt87x_create_risc(bt87x_t *chip, snd_pcm_substream_t *substream,
 189                                  unsigned int periods, unsigned int period_bytes)
 190 {
 191         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
 192         unsigned int i, offset;
 193         u32 *risc;
 194
 195         if (chip->dma_risc.area == NULL) {
 196                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 197                                         PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
 198                         return -ENOMEM;
 199         }
 200         risc = (u32 *)chip->dma_risc.area;
 201         offset = 0;
 202         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
 203         *risc++ = cpu_to_le32(0);
 204         for (i = 0; i < periods; ++i) {
 205                 u32 rest;
 206
 207                 rest = period_bytes;
 208                 do {
 209                         u32 cmd, len;
 210
 211                         len = PAGE_SIZE - (offset % PAGE_SIZE);
 212                         if (len > rest)
 213                                 len = rest;
 214                         cmd = RISC_WRITE | len;
 215                         if (rest == period_bytes) {
 216                                 u32 block = i * 16 / periods;
 217                                 cmd |= RISC_SOL;
 218                                 cmd |= block << RISC_SET_STATUS_SHIFT;
 219                                 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
 220                         }
 221                         if (len == rest)
 222                                 cmd |= RISC_EOL | RISC_IRQ;
 223                         *risc++ = cpu_to_le32(cmd);
 224                         *risc++ = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, offset));
 225                         offset += len;
 226                         rest -= len;
 227                 } while (rest > 0);
 228         }
 229         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
 230         *risc++ = cpu_to_le32(0);
 231         *risc++ = cpu_to_le32(RISC_JUMP);
 232         *risc++ = cpu_to_le32(chip->dma_risc.addr);
 233         chip->line_bytes = period_bytes;
 234         chip->lines = periods;
 235         return 0;
 236 }
 237
 238 static void snd_bt87x_free_risc(bt87x_t *chip)
 239 {
 240         if (chip->dma_risc.area) {
 241                 snd_dma_free_pages(&chip->dma_risc);
 242                 chip->dma_risc.area = NULL;
 243         }
 244 }
 245
 246 static void snd_bt87x_pci_error(bt87x_t *chip, unsigned int status)
 247 {
 248         u16 pci_status;
 249
 250         pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
 251         pci_status &= PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
 252                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
 253                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY;
 254         pci_write_config_word(chip->pci, PCI_STATUS, pci_status);
 255         if (pci_status != PCI_STATUS_DETECTED_PARITY)
 256                 snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
 257                            status & ERROR_INTERRUPTS, pci_status);
 258         else {
 259                 snd_printk(KERN_ERR "Aieee - PCI parity error detected!\n");
 260                 /* error 'handling' similar to aic7xxx_pci.c: */
 261                 chip->pci_parity_errors++;
 262                 if (chip->pci_parity_errors > 20) {
 263                         snd_printk(KERN_ERR "Too many PCI parity errors observed.\n");
 264                         snd_printk(KERN_ERR "Some device on this bus is generating bad parity.\n");
 265                         snd_printk(KERN_ERR "This is an error *observed by*, not *generated by*, this card.\n");
 266                         snd_printk(KERN_ERR "PCI parity error checking has been disabled.\n");
 267                         chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR);
 268                         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
 269                 }
 270         }
 271 }
 272
 273 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 274 {
 275         bt87x_t *chip = dev_id;
 276         unsigned int status, irq_status;
 277
 278         status = snd_bt87x_readl(chip, REG_INT_STAT);
 279         irq_status = status & chip->interrupt_mask;
 280         if (!irq_status)
 281                 return IRQ_NONE;
 282         snd_bt87x_writel(chip, REG_INT_STAT, irq_status);
 283
 284         if (irq_status & ERROR_INTERRUPTS) {
 285                 if (irq_status & (INT_FBUS | INT_FTRGT))
 286                         snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
 287                 if (irq_status & INT_OCERR)
 288                         snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
 289                 if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT))
 290                         snd_bt87x_pci_error(chip, irq_status);
 291         }
 292         if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) {
 293                 int current_block, irq_block;
 294
 295                 /* assume that exactly one line has been recorded */
 296                 chip->current_line = (chip->current_line + 1) % chip->lines;
 297                 /* but check if some interrupts have been skipped */
 298                 current_block = chip->current_line * 16 / chip->lines;
 299                 irq_block = status >> INT_RISCS_SHIFT;
 300                 if (current_block != irq_block)
 301                         chip->current_line = (irq_block * chip->lines + 15) / 16;
 302
 303                 snd_pcm_period_elapsed(chip->substream);
 304         }
 305         return IRQ_HANDLED;
 306 }
 307
 308 static snd_pcm_hardware_t snd_bt87x_digital_hw = {
 309         .info = SNDRV_PCM_INFO_MMAP |
 310                 SNDRV_PCM_INFO_INTERLEAVED |
 311                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 312                 SNDRV_PCM_INFO_MMAP_VALID,
 313         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 314         .rates = 0, /* set at runtime */
 315         .channels_min = 2,
 316         .channels_max = 2,
 317         .buffer_bytes_max = 255 * 4092,
 318         .period_bytes_min = 32,
 319         .period_bytes_max = 4092,
 320         .periods_min = 2,
 321         .periods_max = 255,
 322 };
 323
 324 static snd_pcm_hardware_t snd_bt87x_analog_hw = {
 325         .info = SNDRV_PCM_INFO_MMAP |
 326                 SNDRV_PCM_INFO_INTERLEAVED |
 327                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 328                 SNDRV_PCM_INFO_MMAP_VALID,
 329         .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
 330         .rates = SNDRV_PCM_RATE_KNOT,
 331         .rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX,
 332         .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN,
 333         .channels_min = 1,
 334         .channels_max = 1,
 335         .buffer_bytes_max = 255 * 4092,
 336         .period_bytes_min = 32,
 337         .period_bytes_max = 4092,
 338         .periods_min = 2,
 339         .periods_max = 255,
 340 };
 341
 342 static int snd_bt87x_set_digital_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime)
 343 {
 344         static struct {
 345                 int rate;
 346                 unsigned int bit;
 347         } ratebits[] = {
 348                 {8000, SNDRV_PCM_RATE_8000},
 349                 {11025, SNDRV_PCM_RATE_11025},
 350                 {16000, SNDRV_PCM_RATE_16000},
 351                 {22050, SNDRV_PCM_RATE_22050},
 352                 {32000, SNDRV_PCM_RATE_32000},
 353                 {44100, SNDRV_PCM_RATE_44100},
 354                 {48000, SNDRV_PCM_RATE_48000}
 355         };
 356         int i;
 357
 358         chip->reg_control |= CTL_DA_IOM_DA;
 359         runtime->hw = snd_bt87x_digital_hw;
 360         runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
 361         for (i = 0; i < ARRAY_SIZE(ratebits); ++i)
 362                 if (chip->dig_rate == ratebits[i].rate) {
 363                         runtime->hw.rates = ratebits[i].bit;
 364                         break;
 365                 }
 366         runtime->hw.rate_min = chip->dig_rate;
 367         runtime->hw.rate_max = chip->dig_rate;
 368         return 0;
 369 }
 370
 371 static int snd_bt87x_set_analog_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime)
 372 {
 373         static ratnum_t analog_clock = {
 374                 .num = ANALOG_CLOCK,
 375                 .den_min = CLOCK_DIV_MIN,
 376                 .den_max = CLOCK_DIV_MAX,
 377                 .den_step = 1
 378         };
 379         static snd_pcm_hw_constraint_ratnums_t constraint_rates = {
 380                 .nrats = 1,
 381                 .rats = &analog_clock
 382         };
 383
 384         chip->reg_control &= ~CTL_DA_IOM_DA;
 385         runtime->hw = snd_bt87x_analog_hw;
 386         return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 387                                              &constraint_rates);
 388 }
 389
 390 static int snd_bt87x_pcm_open(snd_pcm_substream_t *substream)
 391 {
 392         bt87x_t *chip = snd_pcm_substream_chip(substream);
 393         snd_pcm_runtime_t *runtime = substream->runtime;
 394         int err;
 395
 396         if (test_and_set_bit(0, &chip->opened))
 397                 return -EBUSY;
 398
 399         if (substream->pcm->device == DEVICE_DIGITAL)
 400                 err = snd_bt87x_set_digital_hw(chip, runtime);
 401         else
 402                 err = snd_bt87x_set_analog_hw(chip, runtime);
 403         if (err < 0)
 404                 goto _error;
 405
 406         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
 407         if (err < 0)
 408                 goto _error;
 409
 410         chip->substream = substream;
 411         return 0;
 412
 413 _error:
 414         clear_bit(0, &chip->opened);
 415         smp_mb__after_clear_bit();
 416         return err;
 417 }
 418
 419 static int snd_bt87x_close(snd_pcm_substream_t *substream)
 420 {
 421         bt87x_t *chip = snd_pcm_substream_chip(substream);
 422
 423         chip->substream = NULL;
 424         clear_bit(0, &chip->opened);
 425         smp_mb__after_clear_bit();
 426         return 0;
 427 }
 428
 429 static int snd_bt87x_hw_params(snd_pcm_substream_t *substream,
 430                                snd_pcm_hw_params_t *hw_params)
 431 {
 432         bt87x_t *chip = snd_pcm_substream_chip(substream);
 433         int err;
 434
 435         err = snd_pcm_lib_malloc_pages(substream,
 436                                        params_buffer_bytes(hw_params));
 437         if (err < 0)
 438                 return err;
 439         return snd_bt87x_create_risc(chip, substream,
 440                                      params_periods(hw_params),
 441                                      params_period_bytes(hw_params));
 442 }
 443
 444 static int snd_bt87x_hw_free(snd_pcm_substream_t *substream)
 445 {
 446         bt87x_t *chip = snd_pcm_substream_chip(substream);
 447
 448         snd_bt87x_free_risc(chip);
 449         snd_pcm_lib_free_pages(substream);
 450         return 0;
 451 }
 452
 453 static int snd_bt87x_prepare(snd_pcm_substream_t *substream)
 454 {
 455         bt87x_t *chip = snd_pcm_substream_chip(substream);
 456         snd_pcm_runtime_t *runtime = substream->runtime;
 457         int decimation;
 458
 459         spin_lock_irq(&chip->reg_lock);
 460         chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
 461         decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
 462         chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
 463         if (runtime->format == SNDRV_PCM_FORMAT_S8)
 464                 chip->reg_control |= CTL_DA_SBR;
 465         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 466         spin_unlock_irq(&chip->reg_lock);
 467         return 0;
 468 }
 469
 470 static int snd_bt87x_start(bt87x_t *chip)
 471 {
 472         spin_lock(&chip->reg_lock);
 473         chip->current_line = 0;
 474         chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
 475         snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
 476         snd_bt87x_writel(chip, REG_PACKET_LEN,
 477                          chip->line_bytes | (chip->lines << 16));
 478         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
 479         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 480         spin_unlock(&chip->reg_lock);
 481         return 0;
 482 }
 483
 484 static int snd_bt87x_stop(bt87x_t *chip)
 485 {
 486         spin_lock(&chip->reg_lock);
 487         chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
 488         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 489         snd_bt87x_writel(chip, REG_INT_MASK, 0);
 490         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
 491         spin_unlock(&chip->reg_lock);
 492         return 0;
 493 }
 494
 495 static int snd_bt87x_trigger(snd_pcm_substream_t *substream, int cmd)
 496 {
 497         bt87x_t *chip = snd_pcm_substream_chip(substream);
 498
 499         switch (cmd) {
 500         case SNDRV_PCM_TRIGGER_START:
 501                 return snd_bt87x_start(chip);
 502         case SNDRV_PCM_TRIGGER_STOP:
 503                 return snd_bt87x_stop(chip);
 504         default:
 505                 return -EINVAL;
 506         }
 507 }
 508
 509 static snd_pcm_uframes_t snd_bt87x_pointer(snd_pcm_substream_t *substream)
 510 {
 511         bt87x_t *chip = snd_pcm_substream_chip(substream);
 512         snd_pcm_runtime_t *runtime = substream->runtime;
 513
 514         return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
 515 }
 516
 517 static snd_pcm_ops_t snd_bt87x_pcm_ops = {
 518         .open = snd_bt87x_pcm_open,
 519         .close = snd_bt87x_close,
 520         .ioctl = snd_pcm_lib_ioctl,
 521         .hw_params = snd_bt87x_hw_params,
 522         .hw_free = snd_bt87x_hw_free,
 523         .prepare = snd_bt87x_prepare,
 524         .trigger = snd_bt87x_trigger,
 525         .pointer = snd_bt87x_pointer,
 526         .page = snd_pcm_sgbuf_ops_page,
 527 };
 528
 529 static int snd_bt87x_capture_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *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(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 539 {
 540         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 541
 542         value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
 543         return 0;
 544 }
 545
 546 static int snd_bt87x_capture_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 547 {
 548         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 549         u32 old_control;
 550         int changed;
 551
 552         spin_lock_irq(&chip->reg_lock);
 553         old_control = chip->reg_control;
 554         chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
 555                 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
 556         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 557         changed = old_control != chip->reg_control;
 558         spin_unlock_irq(&chip->reg_lock);
 559         return changed;
 560 }
 561
 562 static snd_kcontrol_new_t snd_bt87x_capture_volume = {
 563         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 564         .name = "Capture Volume",
 565         .info = snd_bt87x_capture_volume_info,
 566         .get = snd_bt87x_capture_volume_get,
 567         .put = snd_bt87x_capture_volume_put,
 568 };
 569
 570 static int snd_bt87x_capture_boost_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
 571 {
 572         info->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 573         info->count = 1;
 574         info->value.integer.min = 0;
 575         info->value.integer.max = 1;
 576         return 0;
 577 }
 578
 579 static int snd_bt87x_capture_boost_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 580 {
 581         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 582
 583         value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
 584         return 0;
 585 }
 586
 587 static int snd_bt87x_capture_boost_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 588 {
 589         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 590         u32 old_control;
 591         int changed;
 592
 593         spin_lock_irq(&chip->reg_lock);
 594         old_control = chip->reg_control;
 595         chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
 596                 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
 597         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 598         changed = chip->reg_control != old_control;
 599         spin_unlock_irq(&chip->reg_lock);
 600         return changed;
 601 }
 602
 603 static snd_kcontrol_new_t snd_bt87x_capture_boost = {
 604         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 605         .name = "Capture Boost",
 606         .info = snd_bt87x_capture_boost_info,
 607         .get = snd_bt87x_capture_boost_get,
 608         .put = snd_bt87x_capture_boost_put,
 609 };
 610
 611 static int snd_bt87x_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
 612 {
 613         static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"};
 614
 615         info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 616         info->count = 1;
 617         info->value.enumerated.items = 3;
 618         if (info->value.enumerated.item > 2)
 619                 info->value.enumerated.item = 2;
 620         strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]);
 621         return 0;
 622 }
 623
 624 static int snd_bt87x_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 625 {
 626         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 627
 628         value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
 629         return 0;
 630 }
 631
 632 static int snd_bt87x_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 633 {
 634         bt87x_t *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 snd_kcontrol_new_t 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(bt87x_t *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(snd_device_t *device)
 674 {
 675         bt87x_t *chip = device->device_data;
 676         return snd_bt87x_free(chip);
 677 }
 678
 679 static int __devinit snd_bt87x_pcm(bt87x_t *chip, int device, char *name)
 680 {
 681         int err;
 682         snd_pcm_t *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                                                         (255 * 4092 + 1023) & ~1023);
 695 }
 696
 697 static int __devinit snd_bt87x_create(snd_card_t *card,
 698                                       struct pci_dev *pci,
 699                                       bt87x_t **rchip)
 700 {
 701         bt87x_t *chip;
 702         int err;
 703         static snd_device_ops_t 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, SA_INTERRUPT | SA_SHIRQ,
 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         { }
 777 };
 778 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
 779
 780 /* cards known not to have audio
 781  * (DVB cards use the audio function to transfer MPEG data) */
 782 static struct {
 783         unsigned short subvendor, subdevice;
 784 } blacklist[] __devinitdata = {
 785         {0x0071, 0x0101}, /* Nebula Electronics DigiTV */
 786         {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
 787         {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */
 788         {0x1461, 0x0771}, /* AVermedia DVB-T 771 */
 789         {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */
 790         {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */
 791         {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */
 792 };
 793
 794 static struct pci_driver driver;
 795
 796 /* return the rate of the card, or a negative value if it's blacklisted */
 797 static int __devinit snd_bt87x_detect_card(struct pci_dev *pci)
 798 {
 799         int i;
 800         const struct pci_device_id *supported;
 801
 802         supported = pci_match_device(&driver, pci);
 803         if (supported)
 804                 return supported->driver_data;
 805
 806         for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
 807                 if (blacklist[i].subvendor == pci->subsystem_vendor &&
 808                     blacklist[i].subdevice == pci->subsystem_device) {
 809                         snd_printdd(KERN_INFO "card %#04x:%#04x has no audio\n",
 810                                     pci->subsystem_vendor, pci->subsystem_device);
 811                         return -EBUSY;
 812                 }
 813
 814         snd_printk(KERN_INFO "unknown card %#04x:%#04x, using default rate 32000\n",
 815                    pci->subsystem_vendor, pci->subsystem_device);
 816         snd_printk(KERN_DEBUG "please mail id, board name, and, "
 817                    "if it works, the correct digital_rate option to "
 818                    "<alsa-devel@lists.sf.net>\n");
 819         return 32000; /* default rate */
 820 }
 821
 822 static int __devinit snd_bt87x_probe(struct pci_dev *pci,
 823                                      const struct pci_device_id *pci_id)
 824 {
 825         static int dev;
 826         snd_card_t *card;
 827         bt87x_t *chip;
 828         int err, rate;
 829
 830         rate = pci_id->driver_data;
 831         if (! rate)
 832                 if ((rate = snd_bt87x_detect_card(pci)) <= 0)
 833                         return -ENODEV;
 834
 835         if (dev >= SNDRV_CARDS)
 836                 return -ENODEV;
 837         if (!enable[dev]) {
 838                 ++dev;
 839                 return -ENOENT;
 840         }
 841
 842         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
 843         if (!card)
 844                 return -ENOMEM;
 845
 846         err = snd_bt87x_create(card, pci, &chip);
 847         if (err < 0)
 848                 goto _error;
 849
 850         if (digital_rate[dev] > 0)
 851                 chip->dig_rate = digital_rate[dev];
 852         else
 853                 chip->dig_rate = rate;
 854
 855         err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
 856         if (err < 0)
 857                 goto _error;
 858         err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
 859         if (err < 0)
 860                 goto _error;
 861
 862         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_volume, chip));
 863         if (err < 0)
 864                 goto _error;
 865         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_boost, chip));
 866         if (err < 0)
 867                 goto _error;
 868         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_source, chip));
 869         if (err < 0)
 870                 goto _error;
 871
 872         strcpy(card->driver, "Bt87x");
 873         sprintf(card->shortname, "Brooktree Bt%x", pci->device);
 874         sprintf(card->longname, "%s at %#lx, irq %i",
 875                 card->shortname, pci_resource_start(pci, 0), chip->irq);
 876         strcpy(card->mixername, "Bt87x");
 877
 878         err = snd_card_register(card);
 879         if (err < 0)
 880                 goto _error;
 881
 882         pci_set_drvdata(pci, card);
 883         ++dev;
 884         return 0;
 885
 886 _error:
 887         snd_card_free(card);
 888         return err;
 889 }
 890
 891 static void __devexit snd_bt87x_remove(struct pci_dev *pci)
 892 {
 893         snd_card_free(pci_get_drvdata(pci));
 894         pci_set_drvdata(pci, NULL);
 895 }
 896
 897 /* default entries for all Bt87x cards - it's not exported */
 898 /* driver_data is set to 0 to call detection */
 899 static struct pci_device_id snd_bt87x_default_ids[] = {
 900         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, PCI_ANY_ID, PCI_ANY_ID, 0),
 901         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, PCI_ANY_ID, PCI_ANY_ID, 0),
 902         { }
 903 };
 904
 905 static struct pci_driver driver = {
 906         .name = "Bt87x",
 907         .id_table = snd_bt87x_ids,
 908         .probe = snd_bt87x_probe,
 909         .remove = __devexit_p(snd_bt87x_remove),
 910 };
 911
 912 static int __init alsa_card_bt87x_init(void)
 913 {
 914         if (load_all)
 915                 driver.id_table = snd_bt87x_default_ids;
 916         return pci_register_driver(&driver);
 917 }
 918
 919 static void __exit alsa_card_bt87x_exit(void)
 920 {
 921         pci_unregister_driver(&driver);
 922 }
 923
 924 module_init(alsa_card_bt87x_init)
 925 module_exit(alsa_card_bt87x_exit)