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 <asm/io.h>
  31 #include <asm/bitops.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] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  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 boot_devs;
  49
  50 module_param_array(index, int, boot_devs, 0444);
  51 MODULE_PARM_DESC(index, "Index value for Bt87x soundcard");
  52 module_param_array(id, charp, boot_devs, 0444);
  53 MODULE_PARM_DESC(id, "ID string for Bt87x soundcard");
  54 module_param_array(enable, bool, boot_devs, 0444);
  55 MODULE_PARM_DESC(enable, "Enable Bt87x soundcard");
  56 module_param_array(digital_rate, int, boot_devs, 0444);
  57 MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard");
  58
  59
  60 #ifndef PCI_VENDOR_ID_BROOKTREE
  61 #define PCI_VENDOR_ID_BROOKTREE 0x109e
  62 #endif
  63 #ifndef PCI_DEVICE_ID_BROOKTREE_878
  64 #define PCI_DEVICE_ID_BROOKTREE_878 0x0878
  65 #endif
  66 #ifndef PCI_DEVICE_ID_BROOKTREE_879
  67 #define PCI_DEVICE_ID_BROOKTREE_879 0x0879
  68 #endif
  69
  70 /* register offsets */
  71 #define REG_INT_STAT            0x100   /* interrupt status */
  72 #define REG_INT_MASK            0x104   /* interrupt mask */
  73 #define REG_GPIO_DMA_CTL        0x10c   /* audio control */
  74 #define REG_PACKET_LEN          0x110   /* audio packet lengths */
  75 #define REG_RISC_STRT_ADD       0x114   /* RISC program start address */
  76 #define REG_RISC_COUNT          0x120   /* RISC program counter */
  77
  78 /* interrupt bits */
  79 #define INT_OFLOW       (1 <<  3)       /* audio A/D overflow */
  80 #define INT_RISCI       (1 << 11)       /* RISC instruction IRQ bit set */
  81 #define INT_FBUS        (1 << 12)       /* FIFO overrun due to bus access latency */
  82 #define INT_FTRGT       (1 << 13)       /* FIFO overrun due to target latency */
  83 #define INT_FDSR        (1 << 14)       /* FIFO data stream resynchronization */
  84 #define INT_PPERR       (1 << 15)       /* PCI parity error */
  85 #define INT_RIPERR      (1 << 16)       /* RISC instruction parity error */
  86 #define INT_PABORT      (1 << 17)       /* PCI master or target abort */
  87 #define INT_OCERR       (1 << 18)       /* invalid opcode */
  88 #define INT_SCERR       (1 << 19)       /* sync counter overflow */
  89 #define INT_RISC_EN     (1 << 27)       /* DMA controller running */
  90 #define INT_RISCS_SHIFT       28        /* RISC status bits */
  91
  92 /* audio control bits */
  93 #define CTL_FIFO_ENABLE         (1 <<  0)       /* enable audio data FIFO */
  94 #define CTL_RISC_ENABLE         (1 <<  1)       /* enable audio DMA controller */
  95 #define CTL_PKTP_4              (0 <<  2)       /* packet mode FIFO trigger point - 4 DWORDs */
  96 #define CTL_PKTP_8              (1 <<  2)       /* 8 DWORDs */
  97 #define CTL_PKTP_16             (2 <<  2)       /* 16 DWORDs */
  98 #define CTL_ACAP_EN             (1 <<  4)       /* enable audio capture */
  99 #define CTL_DA_APP              (1 <<  5)       /* GPIO input */
 100 #define CTL_DA_IOM_AFE          (0 <<  6)       /* audio A/D input */
 101 #define CTL_DA_IOM_DA           (1 <<  6)       /* digital audio input */
 102 #define CTL_DA_SDR_SHIFT               8        /* DDF first stage decimation rate */
 103 #define CTL_DA_SDR_MASK         (0xf<< 8)
 104 #define CTL_DA_LMT              (1 << 12)       /* limit audio data values */
 105 #define CTL_DA_ES2              (1 << 13)       /* enable DDF stage 2 */
 106 #define CTL_DA_SBR              (1 << 14)       /* samples rounded to 8 bits */
 107 #define CTL_DA_DPM              (1 << 15)       /* data packet mode */
 108 #define CTL_DA_LRD_SHIFT              16        /* ALRCK delay */
 109 #define CTL_DA_MLB              (1 << 21)       /* MSB/LSB format */
 110 #define CTL_DA_LRI              (1 << 22)       /* left/right indication */
 111 #define CTL_DA_SCE              (1 << 23)       /* sample clock edge */
 112 #define CTL_A_SEL_STV           (0 << 24)       /* TV tuner audio input */
 113 #define CTL_A_SEL_SFM           (1 << 24)       /* FM audio input */
 114 #define CTL_A_SEL_SML           (2 << 24)       /* mic/line audio input */
 115 #define CTL_A_SEL_SMXC          (3 << 24)       /* MUX bypass */
 116 #define CTL_A_SEL_SHIFT               24
 117 #define CTL_A_SEL_MASK          (3 << 24)
 118 #define CTL_A_PWRDN             (1 << 26)       /* analog audio power-down */
 119 #define CTL_A_G2X               (1 << 27)       /* audio gain boost */
 120 #define CTL_A_GAIN_SHIFT              28        /* audio input gain */
 121 #define CTL_A_GAIN_MASK         (0xf<<28)
 122
 123 /* RISC instruction opcodes */
 124 #define RISC_WRITE      (0x1 << 28)     /* write FIFO data to memory at address */
 125 #define RISC_WRITEC     (0x5 << 28)     /* write FIFO data to memory at current address */
 126 #define RISC_SKIP       (0x2 << 28)     /* skip FIFO data */
 127 #define RISC_JUMP       (0x7 << 28)     /* jump to address */
 128 #define RISC_SYNC       (0x8 << 28)     /* synchronize with FIFO */
 129
 130 /* RISC instruction bits */
 131 #define RISC_BYTES_ENABLE       (0xf << 12)     /* byte enable bits */
 132 #define RISC_RESYNC             (  1 << 15)     /* disable FDSR errors */
 133 #define RISC_SET_STATUS_SHIFT           16      /* set status bits */
 134 #define RISC_RESET_STATUS_SHIFT         20      /* clear status bits */
 135 #define RISC_IRQ                (  1 << 24)     /* interrupt */
 136 #define RISC_EOL                (  1 << 26)     /* end of line */
 137 #define RISC_SOL                (  1 << 27)     /* start of line */
 138
 139 /* SYNC status bits values */
 140 #define RISC_SYNC_FM1   0x6
 141 #define RISC_SYNC_VRO   0xc
 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 *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         int current_line;
 170 };
 171
 172 enum { DEVICE_DIGITAL, DEVICE_ANALOG };
 173
 174 static inline u32 snd_bt87x_readl(bt87x_t *chip, u32 reg)
 175 {
 176         return readl(chip->mmio + reg);
 177 }
 178
 179 static inline void snd_bt87x_writel(bt87x_t *chip, u32 reg, u32 value)
 180 {
 181         writel(value, chip->mmio + reg);
 182 }
 183
 184 static int snd_bt87x_create_risc(bt87x_t *chip, snd_pcm_substream_t *substream,
 185                                  unsigned int periods, unsigned int period_bytes)
 186 {
 187         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
 188         unsigned int i, offset;
 189         u32 *risc;
 190
 191         if (chip->dma_risc.area == NULL) {
 192                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 193                                         PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
 194                         return -ENOMEM;
 195         }
 196         risc = (u32 *)chip->dma_risc.area;
 197         offset = 0;
 198         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
 199         *risc++ = cpu_to_le32(0);
 200         for (i = 0; i < periods; ++i) {
 201                 u32 rest;
 202
 203                 rest = period_bytes;
 204                 do {
 205                         u32 cmd, len;
 206
 207                         len = PAGE_SIZE - (offset % PAGE_SIZE);
 208                         if (len > rest)
 209                                 len = rest;
 210                         cmd = RISC_WRITE | len;
 211                         if (rest == period_bytes) {
 212                                 u32 block = i * 16 / periods;
 213                                 cmd |= RISC_SOL;
 214                                 cmd |= block << RISC_SET_STATUS_SHIFT;
 215                                 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
 216                         }
 217                         if (len == rest)
 218                                 cmd |= RISC_EOL | RISC_IRQ;
 219                         *risc++ = cpu_to_le32(cmd);
 220                         *risc++ = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, offset));
 221                         offset += len;
 222                         rest -= len;
 223                 } while (rest > 0);
 224         }
 225         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
 226         *risc++ = cpu_to_le32(0);
 227         *risc++ = cpu_to_le32(RISC_JUMP);
 228         *risc++ = cpu_to_le32(chip->dma_risc.addr);
 229         chip->line_bytes = period_bytes;
 230         chip->lines = periods;
 231         return 0;
 232 }
 233
 234 static void snd_bt87x_free_risc(bt87x_t *chip)
 235 {
 236         if (chip->dma_risc.area) {
 237                 snd_dma_free_pages(&chip->dma_risc);
 238                 chip->dma_risc.area = NULL;
 239         }
 240 }
 241
 242 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 243 {
 244         bt87x_t *chip = dev_id;
 245         unsigned int status;
 246
 247         status = snd_bt87x_readl(chip, REG_INT_STAT);
 248         if (!(status & MY_INTERRUPTS))
 249                 return IRQ_NONE;
 250         snd_bt87x_writel(chip, REG_INT_STAT, status & MY_INTERRUPTS);
 251
 252         if (status & ERROR_INTERRUPTS) {
 253                 if (status & (INT_FBUS | INT_FTRGT))
 254                         snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
 255                 if (status & INT_OCERR)
 256                         snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
 257                 if (status & (INT_PPERR | INT_RIPERR | INT_PABORT)) {
 258                         u16 pci_status;
 259                         pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
 260                         pci_write_config_word(chip->pci, PCI_STATUS, pci_status &
 261                                               (PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
 262                                                PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
 263                                                PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));
 264                         snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
 265                                    status, pci_status);
 266                 }
 267         }
 268         if (status & INT_RISCI) {
 269                 int current_block, irq_block;
 270
 271                 /* assume that exactly one line has been recorded */
 272                 chip->current_line = (chip->current_line + 1) % chip->lines;
 273                 /* but check if some interrupts have been skipped */
 274                 current_block = chip->current_line * 16 / chip->lines;
 275                 irq_block = status >> INT_RISCS_SHIFT;
 276                 if (current_block != irq_block)
 277                         chip->current_line = (irq_block * chip->lines + 15) / 16;
 278
 279                 snd_pcm_period_elapsed(chip->substream);
 280         }
 281         return IRQ_HANDLED;
 282 }
 283
 284 static snd_pcm_hardware_t snd_bt87x_digital_hw = {
 285         .info = SNDRV_PCM_INFO_MMAP |
 286                 SNDRV_PCM_INFO_INTERLEAVED |
 287                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 288                 SNDRV_PCM_INFO_MMAP_VALID,
 289         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 290         .rates = 0, /* set at runtime */
 291         .channels_min = 2,
 292         .channels_max = 2,
 293         .buffer_bytes_max = 255 * 4092,
 294         .period_bytes_min = 32,
 295         .period_bytes_max = 4092,
 296         .periods_min = 2,
 297         .periods_max = 255,
 298 };
 299
 300 static snd_pcm_hardware_t snd_bt87x_analog_hw = {
 301         .info = SNDRV_PCM_INFO_MMAP |
 302                 SNDRV_PCM_INFO_INTERLEAVED |
 303                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 304                 SNDRV_PCM_INFO_MMAP_VALID,
 305         .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
 306         .rates = SNDRV_PCM_RATE_KNOT,
 307         .rate_min = 119466,
 308         .rate_max = 448000,
 309         .channels_min = 1,
 310         .channels_max = 1,
 311         .buffer_bytes_max = 255 * 4092,
 312         .period_bytes_min = 32,
 313         .period_bytes_max = 4092,
 314         .periods_min = 2,
 315         .periods_max = 255,
 316 };
 317
 318 static int snd_bt87x_set_digital_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime)
 319 {
 320         static struct {
 321                 int rate;
 322                 unsigned int bit;
 323         } ratebits[] = {
 324                 {8000, SNDRV_PCM_RATE_8000},
 325                 {11025, SNDRV_PCM_RATE_11025},
 326                 {16000, SNDRV_PCM_RATE_16000},
 327                 {22050, SNDRV_PCM_RATE_22050},
 328                 {32000, SNDRV_PCM_RATE_32000},
 329                 {44100, SNDRV_PCM_RATE_44100},
 330                 {48000, SNDRV_PCM_RATE_48000}
 331         };
 332         int i;
 333
 334         chip->reg_control |= CTL_DA_IOM_DA;
 335         runtime->hw = snd_bt87x_digital_hw;
 336         runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
 337         for (i = 0; i < ARRAY_SIZE(ratebits); ++i)
 338                 if (chip->dig_rate == ratebits[i].rate) {
 339                         runtime->hw.rates = ratebits[i].bit;
 340                         break;
 341                 }
 342         runtime->hw.rate_min = chip->dig_rate;
 343         runtime->hw.rate_max = chip->dig_rate;
 344         return 0;
 345 }
 346
 347 static int snd_bt87x_set_analog_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime)
 348 {
 349         static ratnum_t analog_clock = {
 350                 .num = 1792000,
 351                 .den_min = 4,
 352                 .den_max = 15,
 353                 .den_step = 1
 354         };
 355         static snd_pcm_hw_constraint_ratnums_t constraint_rates = {
 356                 .nrats = 1,
 357                 .rats = &analog_clock
 358         };
 359
 360         chip->reg_control &= ~CTL_DA_IOM_DA;
 361         runtime->hw = snd_bt87x_analog_hw;
 362         return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 363                                              &constraint_rates);
 364 }
 365
 366 static int snd_bt87x_pcm_open(snd_pcm_substream_t *substream)
 367 {
 368         bt87x_t *chip = snd_pcm_substream_chip(substream);
 369         snd_pcm_runtime_t *runtime = substream->runtime;
 370         int err;
 371
 372         if (test_and_set_bit(0, &chip->opened))
 373                 return -EBUSY;
 374
 375         if (substream->pcm->device == DEVICE_DIGITAL)
 376                 err = snd_bt87x_set_digital_hw(chip, runtime);
 377         else
 378                 err = snd_bt87x_set_analog_hw(chip, runtime);
 379         if (err < 0)
 380                 goto _error;
 381
 382         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
 383         if (err < 0)
 384                 goto _error;
 385
 386         chip->substream = substream;
 387         return 0;
 388
 389 _error:
 390         clear_bit(0, &chip->opened);
 391         smp_mb__after_clear_bit();
 392         return err;
 393 }
 394
 395 static int snd_bt87x_close(snd_pcm_substream_t *substream)
 396 {
 397         bt87x_t *chip = snd_pcm_substream_chip(substream);
 398
 399         chip->substream = NULL;
 400         clear_bit(0, &chip->opened);
 401         smp_mb__after_clear_bit();
 402         return 0;
 403 }
 404
 405 static int snd_bt87x_hw_params(snd_pcm_substream_t *substream,
 406                                snd_pcm_hw_params_t *hw_params)
 407 {
 408         bt87x_t *chip = snd_pcm_substream_chip(substream);
 409         int err;
 410
 411         err = snd_pcm_lib_malloc_pages(substream,
 412                                        params_buffer_bytes(hw_params));
 413         if (err < 0)
 414                 return err;
 415         return snd_bt87x_create_risc(chip, substream,
 416                                      params_periods(hw_params),
 417                                      params_period_bytes(hw_params));
 418 }
 419
 420 static int snd_bt87x_hw_free(snd_pcm_substream_t *substream)
 421 {
 422         bt87x_t *chip = snd_pcm_substream_chip(substream);
 423
 424         snd_bt87x_free_risc(chip);
 425         snd_pcm_lib_free_pages(substream);
 426         return 0;
 427 }
 428
 429 static int snd_bt87x_prepare(snd_pcm_substream_t *substream)
 430 {
 431         bt87x_t *chip = snd_pcm_substream_chip(substream);
 432         snd_pcm_runtime_t *runtime = substream->runtime;
 433         int decimation;
 434
 435         spin_lock_irq(&chip->reg_lock);
 436         chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
 437         decimation = (1792000 + runtime->rate / 4) / runtime->rate;
 438         chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
 439         if (runtime->format == SNDRV_PCM_FORMAT_S8)
 440                 chip->reg_control |= CTL_DA_SBR;
 441         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 442         spin_unlock_irq(&chip->reg_lock);
 443         return 0;
 444 }
 445
 446 static int snd_bt87x_start(bt87x_t *chip)
 447 {
 448         spin_lock(&chip->reg_lock);
 449         chip->current_line = 0;
 450         chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
 451         snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
 452         snd_bt87x_writel(chip, REG_PACKET_LEN,
 453                          chip->line_bytes | (chip->lines << 16));
 454         snd_bt87x_writel(chip, REG_INT_MASK, MY_INTERRUPTS);
 455         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 456         spin_unlock(&chip->reg_lock);
 457         return 0;
 458 }
 459
 460 static int snd_bt87x_stop(bt87x_t *chip)
 461 {
 462         spin_lock(&chip->reg_lock);
 463         chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
 464         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 465         snd_bt87x_writel(chip, REG_INT_MASK, 0);
 466         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
 467         spin_unlock(&chip->reg_lock);
 468         return 0;
 469 }
 470
 471 static int snd_bt87x_trigger(snd_pcm_substream_t *substream, int cmd)
 472 {
 473         bt87x_t *chip = snd_pcm_substream_chip(substream);
 474
 475         switch (cmd) {
 476         case SNDRV_PCM_TRIGGER_START:
 477                 return snd_bt87x_start(chip);
 478         case SNDRV_PCM_TRIGGER_STOP:
 479                 return snd_bt87x_stop(chip);
 480         default:
 481                 return -EINVAL;
 482         }
 483 }
 484
 485 static snd_pcm_uframes_t snd_bt87x_pointer(snd_pcm_substream_t *substream)
 486 {
 487         bt87x_t *chip = snd_pcm_substream_chip(substream);
 488         snd_pcm_runtime_t *runtime = substream->runtime;
 489
 490         return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
 491 }
 492
 493 static snd_pcm_ops_t snd_bt87x_pcm_ops = {
 494         .open = snd_bt87x_pcm_open,
 495         .close = snd_bt87x_close,
 496         .ioctl = snd_pcm_lib_ioctl,
 497         .hw_params = snd_bt87x_hw_params,
 498         .hw_free = snd_bt87x_hw_free,
 499         .prepare = snd_bt87x_prepare,
 500         .trigger = snd_bt87x_trigger,
 501         .pointer = snd_bt87x_pointer,
 502         .page = snd_pcm_sgbuf_ops_page,
 503 };
 504
 505 static int snd_bt87x_capture_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
 506 {
 507         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 508         info->count = 1;
 509         info->value.integer.min = 0;
 510         info->value.integer.max = 15;
 511         return 0;
 512 }
 513
 514 static int snd_bt87x_capture_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 515 {
 516         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 517
 518         value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
 519         return 0;
 520 }
 521
 522 static int snd_bt87x_capture_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 523 {
 524         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 525         u32 old_control;
 526         int changed;
 527
 528         spin_lock_irq(&chip->reg_lock);
 529         old_control = chip->reg_control;
 530         chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
 531                 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
 532         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 533         changed = old_control != chip->reg_control;
 534         spin_unlock_irq(&chip->reg_lock);
 535         return changed;
 536 }
 537
 538 static snd_kcontrol_new_t snd_bt87x_capture_volume = {
 539         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 540         .name = "Capture Volume",
 541         .info = snd_bt87x_capture_volume_info,
 542         .get = snd_bt87x_capture_volume_get,
 543         .put = snd_bt87x_capture_volume_put,
 544 };
 545
 546 static int snd_bt87x_capture_boost_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
 547 {
 548         info->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 549         info->count = 1;
 550         info->value.integer.min = 0;
 551         info->value.integer.max = 1;
 552         return 0;
 553 }
 554
 555 static int snd_bt87x_capture_boost_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 556 {
 557         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 558
 559         value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
 560         return 0;
 561 }
 562
 563 static int snd_bt87x_capture_boost_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 564 {
 565         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 566         u32 old_control;
 567         int changed;
 568
 569         spin_lock_irq(&chip->reg_lock);
 570         old_control = chip->reg_control;
 571         chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
 572                 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
 573         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 574         changed = chip->reg_control != old_control;
 575         spin_unlock_irq(&chip->reg_lock);
 576         return changed;
 577 }
 578
 579 static snd_kcontrol_new_t snd_bt87x_capture_boost = {
 580         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 581         .name = "Capture Boost",
 582         .info = snd_bt87x_capture_boost_info,
 583         .get = snd_bt87x_capture_boost_get,
 584         .put = snd_bt87x_capture_boost_put,
 585 };
 586
 587 static int snd_bt87x_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
 588 {
 589         static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"};
 590
 591         info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 592         info->count = 1;
 593         info->value.enumerated.items = 3;
 594         if (info->value.enumerated.item > 2)
 595                 info->value.enumerated.item = 2;
 596         strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]);
 597         return 0;
 598 }
 599
 600 static int snd_bt87x_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 601 {
 602         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 603
 604         value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
 605         return 0;
 606 }
 607
 608 static int snd_bt87x_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 609 {
 610         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 611         u32 old_control;
 612         int changed;
 613
 614         spin_lock_irq(&chip->reg_lock);
 615         old_control = chip->reg_control;
 616         chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
 617                 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
 618         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 619         changed = chip->reg_control != old_control;
 620         spin_unlock_irq(&chip->reg_lock);
 621         return changed;
 622 }
 623
 624 static snd_kcontrol_new_t snd_bt87x_capture_source = {
 625         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 626         .name = "Capture Source",
 627         .info = snd_bt87x_capture_source_info,
 628         .get = snd_bt87x_capture_source_get,
 629         .put = snd_bt87x_capture_source_put,
 630 };
 631
 632 static int snd_bt87x_free(bt87x_t *chip)
 633 {
 634         if (chip->mmio) {
 635                 snd_bt87x_stop(chip);
 636                 if (chip->irq >= 0)
 637                         synchronize_irq(chip->irq);
 638
 639                 iounmap(chip->mmio);
 640         }
 641         if (chip->irq >= 0)
 642                 free_irq(chip->irq, chip);
 643         pci_release_regions(chip->pci);
 644         kfree(chip);
 645         return 0;
 646 }
 647
 648 static int snd_bt87x_dev_free(snd_device_t *device)
 649 {
 650         bt87x_t *chip = device->device_data;
 651         return snd_bt87x_free(chip);
 652 }
 653
 654 static int __devinit snd_bt87x_pcm(bt87x_t *chip, int device, char *name)
 655 {
 656         int err;
 657         snd_pcm_t *pcm;
 658
 659         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
 660         if (err < 0)
 661                 return err;
 662         pcm->private_data = chip;
 663         strcpy(pcm->name, name);
 664         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
 665         return snd_pcm_lib_preallocate_pages_for_all(pcm,
 666                                                      SNDRV_DMA_TYPE_DEV_SG,
 667                                                      snd_dma_pci_data(chip->pci),
 668                                                         128 * 1024,
 669                                                         (255 * 4092 + 1023) & ~1023);
 670 }
 671
 672 static int __devinit snd_bt87x_create(snd_card_t *card,
 673                                       struct pci_dev *pci,
 674                                       bt87x_t **rchip)
 675 {
 676         bt87x_t *chip;
 677         int err;
 678         static snd_device_ops_t ops = {
 679                 .dev_free = snd_bt87x_dev_free
 680         };
 681
 682         *rchip = NULL;
 683
 684         err = pci_enable_device(pci);
 685         if (err < 0)
 686                 return err;
 687
 688         chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
 689         if (!chip)
 690                 return -ENOMEM;
 691         chip->card = card;
 692         chip->pci = pci;
 693         chip->irq = -1;
 694         spin_lock_init(&chip->reg_lock);
 695
 696         if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
 697                 kfree(chip);
 698                 return err;
 699         }
 700         chip->mmio = ioremap_nocache(pci_resource_start(pci, 0),
 701                                      pci_resource_len(pci, 0));
 702         if (!chip->mmio) {
 703                 snd_bt87x_free(chip);
 704                 snd_printk(KERN_ERR "cannot remap io memory\n");
 705                 return -ENOMEM;
 706         }
 707
 708         chip->reg_control = CTL_DA_ES2 | CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
 709         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 710         snd_bt87x_writel(chip, REG_INT_MASK, 0);
 711         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
 712
 713         if (request_irq(pci->irq, snd_bt87x_interrupt, SA_INTERRUPT | SA_SHIRQ,
 714                         "Bt87x audio", chip)) {
 715                 snd_bt87x_free(chip);
 716                 snd_printk(KERN_ERR "cannot grab irq\n");
 717                 return -EBUSY;
 718         }
 719         chip->irq = pci->irq;
 720         pci_set_master(pci);
 721         synchronize_irq(chip->irq);
 722
 723         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 724         if (err < 0) {
 725                 snd_bt87x_free(chip);
 726                 return err;
 727         }
 728         snd_card_set_dev(card, &pci->dev);
 729         *rchip = chip;
 730         return 0;
 731 }
 732
 733 static int __devinit snd_bt87x_probe(struct pci_dev *pci,
 734                                      const struct pci_device_id *pci_id)
 735 {
 736         static int dev;
 737         snd_card_t *card;
 738         bt87x_t *chip;
 739         int err;
 740
 741         if (dev >= SNDRV_CARDS)
 742                 return -ENODEV;
 743         if (!enable[dev]) {
 744                 ++dev;
 745                 return -ENOENT;
 746         }
 747
 748         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
 749         if (!card)
 750                 return -ENOMEM;
 751
 752         err = snd_bt87x_create(card, pci, &chip);
 753         if (err < 0)
 754                 goto _error;
 755
 756         if (digital_rate[dev] > 0)
 757                 chip->dig_rate = digital_rate[dev];
 758         else
 759                 chip->dig_rate = (int)pci_id->driver_data;
 760
 761         err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
 762         if (err < 0)
 763                 goto _error;
 764         err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
 765         if (err < 0)
 766                 goto _error;
 767
 768         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_volume, chip));
 769         if (err < 0)
 770                 goto _error;
 771         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_boost, chip));
 772         if (err < 0)
 773                 goto _error;
 774         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_source, chip));
 775         if (err < 0)
 776                 goto _error;
 777
 778         strcpy(card->driver, "Bt87x");
 779         sprintf(card->shortname, "Brooktree Bt%x", pci->device);
 780         sprintf(card->longname, "%s at %#lx, irq %i",
 781                 card->shortname, pci_resource_start(pci, 0), chip->irq);
 782         strcpy(card->mixername, "Bt87x");
 783
 784         err = snd_card_register(card);
 785         if (err < 0)
 786                 goto _error;
 787
 788         pci_set_drvdata(pci, card);
 789         ++dev;
 790         return 0;
 791
 792 _error:
 793         snd_card_free(card);
 794         return err;
 795 }
 796
 797 static void __devexit snd_bt87x_remove(struct pci_dev *pci)
 798 {
 799         snd_card_free(pci_get_drvdata(pci));
 800         pci_set_drvdata(pci, NULL);
 801 }
 802
 803 #define BT_DEVICE(chip, subvend, subdev, rate) \
 804         { .vendor = PCI_VENDOR_ID_BROOKTREE, \
 805           .device = PCI_DEVICE_ID_BROOKTREE_##chip, \
 806           .subvendor = subvend, .subdevice = subdev, \
 807           .driver_data = rate }
 808
 809 /* driver_data is the default digital_rate value for that device */
 810 static struct pci_device_id snd_bt87x_ids[] = {
 811         BT_DEVICE(878, 0x0070, 0xff01, 44100), /* Osprey 200 */
 812
 813         /* default entries for 32kHz and generic Bt87x cards */
 814         BT_DEVICE(878, PCI_ANY_ID, PCI_ANY_ID, 32000),
 815         BT_DEVICE(879, PCI_ANY_ID, PCI_ANY_ID, 32000),
 816         { }
 817 };
 818 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
 819
 820 static struct pci_driver driver = {
 821         .name = "Bt87x",
 822         .id_table = snd_bt87x_ids,
 823         .probe = snd_bt87x_probe,
 824         .remove = __devexit_p(snd_bt87x_remove),
 825 };
 826
 827 static int __init alsa_card_bt87x_init(void)
 828 {
 829         return pci_module_init(&driver);
 830 }
 831
 832 static void __exit alsa_card_bt87x_exit(void)
 833 {
 834         pci_unregister_driver(&driver);
 835 }
 836
 837 module_init(alsa_card_bt87x_init)
 838 module_exit(alsa_card_bt87x_exit)