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 <asm/io.h>
  30 #include <asm/bitops.h>
  31 #include <sound/core.h>
  32 #include <sound/pcm.h>
  33 #include <sound/pcm_params.h>
  34 #include <sound/control.h>
  35 #define SNDRV_GET_ID
  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_CLASSES("{sound}");
  42 MODULE_DEVICES("{{Brooktree,Bt878},"
  43                 "{Brooktree,Bt879}}");
  44
  45 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  46 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  47 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
  48 static int digital_rate[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = 0 }; /* digital input rate */
  49
  50 MODULE_PARM(index, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
  51 MODULE_PARM_DESC(index, "Index value for Bt87x soundcard");
  52 MODULE_PARM_SYNTAX(index, SNDRV_INDEX_DESC);
  53 MODULE_PARM(id, "1-" __MODULE_STRING(SNDRV_CARDS) "s");
  54 MODULE_PARM_DESC(id, "ID string for Bt87x soundcard");
  55 MODULE_PARM_SYNTAX(id, SNDRV_ID_DESC);
  56 MODULE_PARM(enable, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
  57 MODULE_PARM_DESC(enable, "Enable Bt87x soundcard");
  58 MODULE_PARM_SYNTAX(enable, SNDRV_ENABLE_DESC);
  59 MODULE_PARM(digital_rate, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
  60 MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard");
  61 MODULE_PARM_SYNTAX(digital_rate, SNDRV_ENABLED);
  62
  63
  64 #ifndef PCI_VENDOR_ID_BROOKTREE
  65 #define PCI_VENDOR_ID_BROOKTREE 0x109e
  66 #endif
  67 #ifndef PCI_DEVICE_ID_BROOKTREE_878
  68 #define PCI_DEVICE_ID_BROOKTREE_878 0x0878
  69 #endif
  70 #ifndef PCI_DEVICE_ID_BROOKTREE_879
  71 #define PCI_DEVICE_ID_BROOKTREE_879 0x0879
  72 #endif
  73
  74 /* register offsets */
  75 #define REG_INT_STAT            0x100   /* interrupt status */
  76 #define REG_INT_MASK            0x104   /* interrupt mask */
  77 #define REG_GPIO_DMA_CTL        0x10c   /* audio control */
  78 #define REG_PACKET_LEN          0x110   /* audio packet lengths */
  79 #define REG_RISC_STRT_ADD       0x114   /* RISC program start address */
  80 #define REG_RISC_COUNT          0x120   /* RISC program counter */
  81
  82 /* interrupt bits */
  83 #define INT_OFLOW       (1 <<  3)       /* audio A/D overflow */
  84 #define INT_RISCI       (1 << 11)       /* RISC instruction IRQ bit set */
  85 #define INT_FBUS        (1 << 12)       /* FIFO overrun due to bus access latency */
  86 #define INT_FTRGT       (1 << 13)       /* FIFO overrun due to target latency */
  87 #define INT_FDSR        (1 << 14)       /* FIFO data stream resynchronization */
  88 #define INT_PPERR       (1 << 15)       /* PCI parity error */
  89 #define INT_RIPERR      (1 << 16)       /* RISC instruction parity error */
  90 #define INT_PABORT      (1 << 17)       /* PCI master or target abort */
  91 #define INT_OCERR       (1 << 18)       /* invalid opcode */
  92 #define INT_SCERR       (1 << 19)       /* sync counter overflow */
  93 #define INT_RISC_EN     (1 << 27)       /* DMA controller running */
  94 #define INT_RISCS_SHIFT       28        /* RISC status bits */
  95
  96 /* audio control bits */
  97 #define CTL_FIFO_ENABLE         (1 <<  0)       /* enable audio data FIFO */
  98 #define CTL_RISC_ENABLE         (1 <<  1)       /* enable audio DMA controller */
  99 #define CTL_PKTP_4              (0 <<  2)       /* packet mode FIFO trigger point - 4 DWORDs */
 100 #define CTL_PKTP_8              (1 <<  2)       /* 8 DWORDs */
 101 #define CTL_PKTP_16             (2 <<  2)       /* 16 DWORDs */
 102 #define CTL_ACAP_EN             (1 <<  4)       /* enable audio capture */
 103 #define CTL_DA_APP              (1 <<  5)       /* GPIO input */
 104 #define CTL_DA_IOM_AFE          (0 <<  6)       /* audio A/D input */
 105 #define CTL_DA_IOM_DA           (1 <<  6)       /* digital audio input */
 106 #define CTL_DA_SDR_SHIFT               8        /* DDF first stage decimation rate */
 107 #define CTL_DA_SDR_MASK         (0xf<< 8)
 108 #define CTL_DA_LMT              (1 << 12)       /* limit audio data values */
 109 #define CTL_DA_ES2              (1 << 13)       /* enable DDF stage 2 */
 110 #define CTL_DA_SBR              (1 << 14)       /* samples rounded to 8 bits */
 111 #define CTL_DA_DPM              (1 << 15)       /* data packet mode */
 112 #define CTL_DA_LRD_SHIFT              16        /* ALRCK delay */
 113 #define CTL_DA_MLB              (1 << 21)       /* MSB/LSB format */
 114 #define CTL_DA_LRI              (1 << 22)       /* left/right indication */
 115 #define CTL_DA_SCE              (1 << 23)       /* sample clock edge */
 116 #define CTL_A_SEL_STV           (0 << 24)       /* TV tuner audio input */
 117 #define CTL_A_SEL_SFM           (1 << 24)       /* FM audio input */
 118 #define CTL_A_SEL_SML           (2 << 24)       /* mic/line audio input */
 119 #define CTL_A_SEL_SMXC          (3 << 24)       /* MUX bypass */
 120 #define CTL_A_SEL_SHIFT               24
 121 #define CTL_A_SEL_MASK          (3 << 24)
 122 #define CTL_A_PWRDN             (1 << 26)       /* analog audio power-down */
 123 #define CTL_A_G2X               (1 << 27)       /* audio gain boost */
 124 #define CTL_A_GAIN_SHIFT              28        /* audio input gain */
 125 #define CTL_A_GAIN_MASK         (0xf<<28)
 126
 127 /* RISC instruction opcodes */
 128 #define RISC_WRITE      (0x1 << 28)     /* write FIFO data to memory at address */
 129 #define RISC_WRITEC     (0x5 << 28)     /* write FIFO data to memory at current address */
 130 #define RISC_SKIP       (0x2 << 28)     /* skip FIFO data */
 131 #define RISC_JUMP       (0x7 << 28)     /* jump to address */
 132 #define RISC_SYNC       (0x8 << 28)     /* synchronize with FIFO */
 133
 134 /* RISC instruction bits */
 135 #define RISC_BYTES_ENABLE       (0xf << 12)     /* byte enable bits */
 136 #define RISC_RESYNC             (  1 << 15)     /* disable FDSR errors */
 137 #define RISC_SET_STATUS_SHIFT           16      /* set status bits */
 138 #define RISC_RESET_STATUS_SHIFT         20      /* clear status bits */
 139 #define RISC_IRQ                (  1 << 24)     /* interrupt */
 140 #define RISC_EOL                (  1 << 26)     /* end of line */
 141 #define RISC_SOL                (  1 << 27)     /* start of line */
 142
 143 /* SYNC status bits values */
 144 #define RISC_SYNC_FM1   0x6
 145 #define RISC_SYNC_VRO   0xc
 146
 147 #define ERROR_INTERRUPTS (INT_FBUS | INT_FTRGT | INT_PPERR | \
 148                           INT_RIPERR | INT_PABORT | INT_OCERR)
 149 #define MY_INTERRUPTS (INT_RISCI | ERROR_INTERRUPTS)
 150
 151 /* SYNC, one WRITE per line, one extra WRITE per page boundary, SYNC, JUMP */
 152 #define MAX_RISC_SIZE ((1 + 255 + (PAGE_ALIGN(255 * 4092) / PAGE_SIZE - 1) + 1 + 1) * 8)
 153
 154 #define chip_t bt87x_t
 155 typedef struct snd_bt87x bt87x_t;
 156 struct snd_bt87x {
 157         snd_card_t *card;
 158         struct pci_dev *pci;
 159
 160         void *mmio;
 161         struct resource *res_mmio;
 162         int irq;
 163
 164         int dig_rate;
 165
 166         spinlock_t reg_lock;
 167         long opened;
 168         snd_pcm_substream_t *substream;
 169
 170         struct snd_dma_device dma_dev;
 171         struct snd_dma_buffer dma_risc;
 172         unsigned int line_bytes;
 173         unsigned int lines;
 174
 175         u32 reg_control;
 176         int current_line;
 177 };
 178
 179 enum { DEVICE_DIGITAL, DEVICE_ANALOG };
 180
 181 static inline u32 snd_bt87x_readl(bt87x_t *chip, u32 reg)
 182 {
 183         return readl(chip->mmio + reg);
 184 }
 185
 186 static inline void snd_bt87x_writel(bt87x_t *chip, u32 reg, u32 value)
 187 {
 188         writel(value, chip->mmio + reg);
 189 }
 190
 191 static int snd_bt87x_create_risc(bt87x_t *chip, snd_pcm_substream_t *substream,
 192                                  unsigned int periods, unsigned int period_bytes)
 193 {
 194         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
 195         unsigned int i, offset;
 196         u32 *risc;
 197
 198         if (chip->dma_risc.area == NULL) {
 199                 memset(&chip->dma_dev, 0, sizeof(chip->dma_dev));
 200                 chip->dma_dev.type = SNDRV_DMA_TYPE_DEV;
 201                 chip->dma_dev.dev = snd_dma_pci_data(chip->pci);
 202                 if (snd_dma_alloc_pages(&chip->dma_dev, PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
 203                         return -ENOMEM;
 204         }
 205         risc = (u32 *)chip->dma_risc.area;
 206         offset = 0;
 207         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
 208         *risc++ = cpu_to_le32(0);
 209         for (i = 0; i < periods; ++i) {
 210                 u32 rest;
 211
 212                 rest = period_bytes;
 213                 do {
 214                         u32 cmd, len;
 215
 216                         len = PAGE_SIZE - (offset % PAGE_SIZE);
 217                         if (len > rest)
 218                                 len = rest;
 219                         cmd = RISC_WRITE | len;
 220                         if (rest == period_bytes) {
 221                                 u32 block = i * 16 / periods;
 222                                 cmd |= RISC_SOL;
 223                                 cmd |= block << RISC_SET_STATUS_SHIFT;
 224                                 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
 225                         }
 226                         if (len == rest)
 227                                 cmd |= RISC_EOL | RISC_IRQ;
 228                         *risc++ = cpu_to_le32(cmd);
 229                         *risc++ = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, offset));
 230                         offset += len;
 231                         rest -= len;
 232                 } while (rest > 0);
 233         }
 234         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
 235         *risc++ = cpu_to_le32(0);
 236         *risc++ = cpu_to_le32(RISC_JUMP);
 237         *risc++ = cpu_to_le32(chip->dma_risc.addr);
 238         chip->line_bytes = period_bytes;
 239         chip->lines = periods;
 240         return 0;
 241 }
 242
 243 static void snd_bt87x_free_risc(bt87x_t *chip)
 244 {
 245         if (chip->dma_risc.area) {
 246                 snd_dma_free_pages(&chip->dma_dev, &chip->dma_risc);
 247                 chip->dma_risc.area = NULL;
 248         }
 249 }
 250
 251 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 252 {
 253         bt87x_t *chip = snd_magic_cast(bt87x_t, dev_id, return IRQ_NONE);
 254         unsigned int status;
 255
 256         status = snd_bt87x_readl(chip, REG_INT_STAT);
 257         if (!(status & MY_INTERRUPTS))
 258                 return IRQ_NONE;
 259         snd_bt87x_writel(chip, REG_INT_STAT, status & MY_INTERRUPTS);
 260
 261         if (status & ERROR_INTERRUPTS) {
 262                 if (status & (INT_FBUS | INT_FTRGT))
 263                         snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
 264                 if (status & INT_OCERR)
 265                         snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
 266                 if (status & (INT_PPERR | INT_RIPERR | INT_PABORT)) {
 267                         u16 pci_status;
 268                         pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
 269                         pci_write_config_word(chip->pci, PCI_STATUS, pci_status &
 270                                               (PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
 271                                                PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
 272                                                PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));
 273                         snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
 274                                    status, pci_status);
 275                 }
 276         }
 277         if (status & INT_RISCI) {
 278                 int current_block, irq_block;
 279
 280                 /* assume that exactly one line has been recorded */
 281                 chip->current_line = (chip->current_line + 1) % chip->lines;
 282                 /* but check if some interrupts have been skipped */
 283                 current_block = chip->current_line * 16 / chip->lines;
 284                 irq_block = status >> INT_RISCS_SHIFT;
 285                 if (current_block != irq_block)
 286                         chip->current_line = (irq_block * chip->lines + 15) / 16;
 287
 288                 snd_pcm_period_elapsed(chip->substream);
 289         }
 290         return IRQ_HANDLED;
 291 }
 292
 293 static snd_pcm_hardware_t snd_bt87x_digital_hw = {
 294         .info = SNDRV_PCM_INFO_MMAP |
 295                 SNDRV_PCM_INFO_INTERLEAVED |
 296                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 297                 SNDRV_PCM_INFO_MMAP_VALID,
 298         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 299         .rates = 0, /* set at runtime */
 300         .channels_min = 2,
 301         .channels_max = 2,
 302         .buffer_bytes_max = 255 * 4092,
 303         .period_bytes_min = 32,
 304         .period_bytes_max = 4092,
 305         .periods_min = 2,
 306         .periods_max = 255,
 307 };
 308
 309 static snd_pcm_hardware_t snd_bt87x_analog_hw = {
 310         .info = SNDRV_PCM_INFO_MMAP |
 311                 SNDRV_PCM_INFO_INTERLEAVED |
 312                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 313                 SNDRV_PCM_INFO_MMAP_VALID,
 314         .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
 315         .rates = SNDRV_PCM_RATE_KNOT,
 316         .rate_min = 119467,
 317         .rate_max = 448000,
 318         .channels_min = 1,
 319         .channels_max = 1,
 320         .buffer_bytes_max = 255 * 4092,
 321         .period_bytes_min = 32,
 322         .period_bytes_max = 4092,
 323         .periods_min = 2,
 324         .periods_max = 255,
 325 };
 326
 327 static int snd_bt87x_set_digital_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime)
 328 {
 329         static struct {
 330                 int rate;
 331                 unsigned int bit;
 332         } ratebits[] = {
 333                 {8000, SNDRV_PCM_RATE_8000},
 334                 {11025, SNDRV_PCM_RATE_11025},
 335                 {16000, SNDRV_PCM_RATE_16000},
 336                 {22050, SNDRV_PCM_RATE_22050},
 337                 {32000, SNDRV_PCM_RATE_32000},
 338                 {44100, SNDRV_PCM_RATE_44100},
 339                 {48000, SNDRV_PCM_RATE_48000}
 340         };
 341         int i;
 342
 343         chip->reg_control |= CTL_DA_IOM_DA;
 344         runtime->hw = snd_bt87x_digital_hw;
 345         runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
 346         for (i = 0; i < ARRAY_SIZE(ratebits); ++i)
 347                 if (chip->dig_rate == ratebits[i].rate) {
 348                         runtime->hw.rates = ratebits[i].bit;
 349                         break;
 350                 }
 351         runtime->hw.rate_min = chip->dig_rate;
 352         runtime->hw.rate_max = chip->dig_rate;
 353         return 0;
 354 }
 355
 356 static int snd_bt87x_set_analog_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime)
 357 {
 358         static unsigned int rates[] = {
 359                 119467, 128000, 137846, 149333, 162909, 179200,
 360                 199111, 224000, 256000, 298667, 358400, 448000
 361         };
 362         static snd_pcm_hw_constraint_list_t constraint_rates = {
 363                 .count = ARRAY_SIZE(rates),
 364                 .list = rates,
 365                 .mask = 0,
 366         };
 367
 368         chip->reg_control &= ~CTL_DA_IOM_DA;
 369         runtime->hw = snd_bt87x_analog_hw;
 370         return snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 371                                           &constraint_rates);
 372 }
 373
 374 static int snd_bt87x_pcm_open(snd_pcm_substream_t *substream)
 375 {
 376         bt87x_t *chip = snd_pcm_substream_chip(substream);
 377         snd_pcm_runtime_t *runtime = substream->runtime;
 378         int err;
 379
 380         if (test_and_set_bit(0, &chip->opened))
 381                 return -EBUSY;
 382
 383         if (substream->pcm->device == DEVICE_DIGITAL)
 384                 err = snd_bt87x_set_digital_hw(chip, runtime);
 385         else
 386                 err = snd_bt87x_set_analog_hw(chip, runtime);
 387         if (err < 0)
 388                 goto _error;
 389
 390         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
 391         if (err < 0)
 392                 goto _error;
 393
 394         chip->substream = substream;
 395         return 0;
 396
 397 _error:
 398         clear_bit(0, &chip->opened);
 399         smp_mb__after_clear_bit();
 400         return err;
 401 }
 402
 403 static int snd_bt87x_close(snd_pcm_substream_t *substream)
 404 {
 405         bt87x_t *chip = snd_pcm_substream_chip(substream);
 406
 407         chip->substream = NULL;
 408         clear_bit(0, &chip->opened);
 409         smp_mb__after_clear_bit();
 410         return 0;
 411 }
 412
 413 static int snd_bt87x_hw_params(snd_pcm_substream_t *substream,
 414                                snd_pcm_hw_params_t *hw_params)
 415 {
 416         bt87x_t *chip = snd_pcm_substream_chip(substream);
 417         int err;
 418
 419         err = snd_pcm_lib_malloc_pages(substream,
 420                                        params_buffer_bytes(hw_params));
 421         if (err < 0)
 422                 return err;
 423         return snd_bt87x_create_risc(chip, substream,
 424                                      params_periods(hw_params),
 425                                      params_period_bytes(hw_params));
 426 }
 427
 428 static int snd_bt87x_hw_free(snd_pcm_substream_t *substream)
 429 {
 430         bt87x_t *chip = snd_pcm_substream_chip(substream);
 431
 432         snd_bt87x_free_risc(chip);
 433         snd_pcm_lib_free_pages(substream);
 434         return 0;
 435 }
 436
 437 static int snd_bt87x_prepare(snd_pcm_substream_t *substream)
 438 {
 439         bt87x_t *chip = snd_pcm_substream_chip(substream);
 440         snd_pcm_runtime_t *runtime = substream->runtime;
 441         unsigned long flags;
 442         int decimation;
 443
 444         spin_lock_irqsave(&chip->reg_lock, flags);
 445         chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
 446         decimation = (1792000 + 5) / runtime->rate;
 447         chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
 448         if (runtime->format == SNDRV_PCM_FORMAT_S8)
 449                 chip->reg_control |= CTL_DA_SBR;
 450         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 451         spin_unlock_irqrestore(&chip->reg_lock, flags);
 452         return 0;
 453 }
 454
 455 static int snd_bt87x_start(bt87x_t *chip)
 456 {
 457         unsigned long flags;
 458
 459         spin_lock_irqsave(&chip->reg_lock, flags);
 460         chip->current_line = 0;
 461         chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
 462         snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
 463         snd_bt87x_writel(chip, REG_PACKET_LEN,
 464                          chip->line_bytes | (chip->lines << 16));
 465         snd_bt87x_writel(chip, REG_INT_MASK, MY_INTERRUPTS);
 466         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 467         spin_unlock_irqrestore(&chip->reg_lock, flags);
 468         return 0;
 469 }
 470
 471 static int snd_bt87x_stop(bt87x_t *chip)
 472 {
 473         unsigned long flags;
 474
 475         spin_lock_irqsave(&chip->reg_lock, flags);
 476         chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
 477         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 478         snd_bt87x_writel(chip, REG_INT_MASK, 0);
 479         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
 480         spin_unlock_irqrestore(&chip->reg_lock, flags);
 481         return 0;
 482 }
 483
 484 static int snd_bt87x_trigger(snd_pcm_substream_t *substream, int cmd)
 485 {
 486         bt87x_t *chip = snd_pcm_substream_chip(substream);
 487
 488         switch (cmd) {
 489         case SNDRV_PCM_TRIGGER_START:
 490                 return snd_bt87x_start(chip);
 491         case SNDRV_PCM_TRIGGER_STOP:
 492                 return snd_bt87x_stop(chip);
 493         default:
 494                 return -EINVAL;
 495         }
 496 }
 497
 498 static snd_pcm_uframes_t snd_bt87x_pointer(snd_pcm_substream_t *substream)
 499 {
 500         bt87x_t *chip = snd_pcm_substream_chip(substream);
 501         snd_pcm_runtime_t *runtime = substream->runtime;
 502
 503         return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
 504 }
 505
 506 static snd_pcm_ops_t snd_bt87x_pcm_ops = {
 507         .open = snd_bt87x_pcm_open,
 508         .close = snd_bt87x_close,
 509         .ioctl = snd_pcm_lib_ioctl,
 510         .hw_params = snd_bt87x_hw_params,
 511         .hw_free = snd_bt87x_hw_free,
 512         .prepare = snd_bt87x_prepare,
 513         .trigger = snd_bt87x_trigger,
 514         .pointer = snd_bt87x_pointer,
 515         .page = snd_pcm_sgbuf_ops_page,
 516 };
 517
 518 static int snd_bt87x_capture_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
 519 {
 520         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 521         info->count = 1;
 522         info->value.integer.min = 0;
 523         info->value.integer.max = 15;
 524         return 0;
 525 }
 526
 527 static int snd_bt87x_capture_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 528 {
 529         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 530
 531         value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
 532         return 0;
 533 }
 534
 535 static int snd_bt87x_capture_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 536 {
 537         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 538         unsigned long flags;
 539         u32 old_control;
 540         int changed;
 541
 542         spin_lock_irqsave(&chip->reg_lock, flags);
 543         old_control = chip->reg_control;
 544         chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
 545                 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
 546         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 547         changed = old_control != chip->reg_control;
 548         spin_unlock_irqrestore(&chip->reg_lock, flags);
 549         return changed;
 550 }
 551
 552 static snd_kcontrol_new_t snd_bt87x_capture_volume = {
 553         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 554         .name = "Capture Volume",
 555         .info = snd_bt87x_capture_volume_info,
 556         .get = snd_bt87x_capture_volume_get,
 557         .put = snd_bt87x_capture_volume_put,
 558 };
 559
 560 static int snd_bt87x_capture_boost_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
 561 {
 562         info->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 563         info->count = 1;
 564         info->value.integer.min = 0;
 565         info->value.integer.max = 1;
 566         return 0;
 567 }
 568
 569 static int snd_bt87x_capture_boost_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 570 {
 571         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 572
 573         value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
 574         return 0;
 575 }
 576
 577 static int snd_bt87x_capture_boost_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 578 {
 579         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 580         unsigned long flags;
 581         u32 old_control;
 582         int changed;
 583
 584         spin_lock_irqsave(&chip->reg_lock, flags);
 585         old_control = chip->reg_control;
 586         chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
 587                 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
 588         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 589         changed = chip->reg_control != old_control;
 590         spin_unlock_irqrestore(&chip->reg_lock, flags);
 591         return changed;
 592 }
 593
 594 static snd_kcontrol_new_t snd_bt87x_capture_boost = {
 595         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 596         .name = "Capture Boost",
 597         .info = snd_bt87x_capture_boost_info,
 598         .get = snd_bt87x_capture_boost_get,
 599         .put = snd_bt87x_capture_boost_put,
 600 };
 601
 602 static int snd_bt87x_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
 603 {
 604         static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"};
 605
 606         info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 607         info->count = 1;
 608         info->value.enumerated.items = 3;
 609         if (info->value.enumerated.item > 2)
 610                 info->value.enumerated.item = 2;
 611         strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]);
 612         return 0;
 613 }
 614
 615 static int snd_bt87x_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 616 {
 617         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 618
 619         value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
 620         return 0;
 621 }
 622
 623 static int snd_bt87x_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
 624 {
 625         bt87x_t *chip = snd_kcontrol_chip(kcontrol);
 626         unsigned long flags;
 627         u32 old_control;
 628         int changed;
 629
 630         spin_lock_irqsave(&chip->reg_lock, flags);
 631         old_control = chip->reg_control;
 632         chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
 633                 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
 634         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 635         changed = chip->reg_control != old_control;
 636         spin_unlock_irqrestore(&chip->reg_lock, flags);
 637         return changed;
 638 }
 639
 640 static snd_kcontrol_new_t snd_bt87x_capture_source = {
 641         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 642         .name = "Capture Source",
 643         .info = snd_bt87x_capture_source_info,
 644         .get = snd_bt87x_capture_source_get,
 645         .put = snd_bt87x_capture_source_put,
 646 };
 647
 648 static int snd_bt87x_free(bt87x_t *chip)
 649 {
 650         if (chip->mmio) {
 651                 snd_bt87x_stop(chip);
 652                 if (chip->irq >= 0)
 653                         synchronize_irq(chip->irq);
 654
 655                 iounmap(chip->mmio);
 656         }
 657         if (chip->res_mmio) {
 658                 release_resource(chip->res_mmio);
 659                 kfree_nocheck(chip->res_mmio);
 660         }
 661         if (chip->irq >= 0)
 662                 free_irq(chip->irq, chip);
 663         snd_magic_kfree(chip);
 664         return 0;
 665 }
 666
 667 static int snd_bt87x_dev_free(snd_device_t *device)
 668 {
 669         bt87x_t *chip = snd_magic_cast(bt87x_t, device->device_data, return -ENXIO);
 670         return snd_bt87x_free(chip);
 671 }
 672
 673 static int __devinit snd_bt87x_pcm(bt87x_t *chip, int device, char *name)
 674 {
 675         int err;
 676         snd_pcm_t *pcm;
 677
 678         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
 679         if (err < 0)
 680                 return err;
 681         pcm->private_data = chip;
 682         strcpy(pcm->name, name);
 683         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
 684         return snd_pcm_lib_preallocate_pages_for_all(pcm,
 685                                                      SNDRV_DMA_TYPE_DEV_SG,
 686                                                      snd_dma_pci_data(chip->pci),
 687                                                         128 * 1024,
 688                                                         (255 * 4092 + 1023) & ~1023);
 689 }
 690
 691 static int __devinit snd_bt87x_create(snd_card_t *card,
 692                                       struct pci_dev *pci,
 693                                       bt87x_t **rchip)
 694 {
 695         bt87x_t *chip;
 696         int err;
 697         static snd_device_ops_t ops = {
 698                 .dev_free = snd_bt87x_dev_free
 699         };
 700
 701         *rchip = NULL;
 702
 703         err = pci_enable_device(pci);
 704         if (err < 0)
 705                 return err;
 706
 707         chip = snd_magic_kcalloc(bt87x_t, 0, GFP_KERNEL);
 708         if (!chip)
 709                 return -ENOMEM;
 710         chip->card = card;
 711         chip->pci = pci;
 712         chip->irq = -1;
 713         spin_lock_init(&chip->reg_lock);
 714
 715         chip->res_mmio = request_mem_region(pci_resource_start(pci, 0),
 716                                             pci_resource_len(pci, 0),
 717                                             "Bt87x audio");
 718         if (!chip->res_mmio) {
 719                 snd_bt87x_free(chip);
 720                 snd_printk(KERN_ERR "cannot allocate io memory\n");
 721                 return -EBUSY;
 722         }
 723         chip->mmio = ioremap_nocache(pci_resource_start(pci, 0),
 724                                      pci_resource_len(pci, 0));
 725         if (!chip->mmio) {
 726                 snd_bt87x_free(chip);
 727                 snd_printk(KERN_ERR "cannot remap io memory\n");
 728                 return -ENOMEM;
 729         }
 730
 731         chip->reg_control = CTL_DA_ES2 | CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
 732         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 733         snd_bt87x_writel(chip, REG_INT_MASK, 0);
 734         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
 735
 736         if (request_irq(pci->irq, snd_bt87x_interrupt, SA_INTERRUPT | SA_SHIRQ,
 737                         "Bt87x audio", chip)) {
 738                 snd_bt87x_free(chip);
 739                 snd_printk(KERN_ERR "cannot grab irq\n");
 740                 return -EBUSY;
 741         }
 742         chip->irq = pci->irq;
 743         pci_set_master(pci);
 744         synchronize_irq(chip->irq);
 745
 746         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 747         if (err < 0) {
 748                 snd_bt87x_free(chip);
 749                 return err;
 750         }
 751         snd_card_set_dev(card, &pci->dev);
 752         *rchip = chip;
 753         return 0;
 754 }
 755
 756 static int __devinit snd_bt87x_probe(struct pci_dev *pci,
 757                                      const struct pci_device_id *pci_id)
 758 {
 759         static int dev;
 760         snd_card_t *card;
 761         bt87x_t *chip;
 762         int err;
 763
 764         if (dev >= SNDRV_CARDS)
 765                 return -ENODEV;
 766         if (!enable[dev]) {
 767                 ++dev;
 768                 return -ENOENT;
 769         }
 770
 771         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
 772         if (!card)
 773                 return -ENOMEM;
 774
 775         err = snd_bt87x_create(card, pci, &chip);
 776         if (err < 0)
 777                 goto _error;
 778
 779         if (digital_rate[dev] > 0)
 780                 chip->dig_rate = digital_rate[dev];
 781         else
 782                 chip->dig_rate = (int)pci_id->driver_data;
 783
 784         err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
 785         if (err < 0)
 786                 goto _error;
 787         err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
 788         if (err < 0)
 789                 goto _error;
 790
 791         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_volume, chip));
 792         if (err < 0)
 793                 goto _error;
 794         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_boost, chip));
 795         if (err < 0)
 796                 goto _error;
 797         err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_source, chip));
 798         if (err < 0)
 799                 goto _error;
 800
 801         strcpy(card->driver, "Bt87x");
 802         sprintf(card->shortname, "Brooktree Bt%x", pci->device);
 803         sprintf(card->longname, "%s at %#lx, irq %i",
 804                 card->shortname, pci_resource_start(pci, 0), chip->irq);
 805         strcpy(card->mixername, "Bt87x");
 806
 807         err = snd_card_register(card);
 808         if (err < 0)
 809                 goto _error;
 810
 811         pci_set_drvdata(pci, chip);
 812         ++dev;
 813         return 0;
 814
 815 _error:
 816         snd_card_free(card);
 817         return err;
 818 }
 819
 820 static void __devexit snd_bt87x_remove(struct pci_dev *pci)
 821 {
 822         bt87x_t *chip = snd_magic_cast(bt87x_t, pci_get_drvdata(pci), return);
 823         if (chip)
 824                 snd_card_free(chip->card);
 825         pci_set_drvdata(pci, NULL);
 826 }
 827
 828 #define BT_DEVICE(chip, subvend, subdev, rate) \
 829         { .vendor = PCI_VENDOR_ID_BROOKTREE, \
 830           .device = PCI_DEVICE_ID_BROOKTREE_##chip, \
 831           .subvendor = subvend, .subdevice = subdev, \
 832           .driver_data = rate }
 833
 834 /* driver_data is the default digital_rate value for that device */
 835 static struct pci_device_id snd_bt87x_ids[] = {
 836         BT_DEVICE(878, 0x0070, 0xff01, 44100), /* Osprey 200 */
 837
 838         /* default entries for 32kHz and generic Bt87x cards */
 839         BT_DEVICE(878, PCI_ANY_ID, PCI_ANY_ID, 32000),
 840         BT_DEVICE(879, PCI_ANY_ID, PCI_ANY_ID, 32000),
 841         { }
 842 };
 843 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
 844
 845 static struct pci_driver driver = {
 846         .name = "Bt87x",
 847         .id_table = snd_bt87x_ids,
 848         .probe = snd_bt87x_probe,
 849         .remove = __devexit_p(snd_bt87x_remove),
 850 };
 851
 852 static int __init alsa_card_bt87x_init(void)
 853 {
 854         int err;
 855
 856         err = pci_module_init(&driver);
 857         if (err < 0) {
 858 #ifdef MODULE
 859                 printk(KERN_ERR "Bt87x soundcard not found or device busy\n");
 860 #endif
 861                 return err;
 862         }
 863         return 0;
 864 }
 865
 866 static void __exit alsa_card_bt87x_exit(void)
 867 {
 868         pci_unregister_driver(&driver);
 869 }
 870
 871 module_init(alsa_card_bt87x_init)
 872 module_exit(alsa_card_bt87x_exit)
 873
 874 #ifndef MODULE
 875
 876 /* format is: snd-bt87x=enable,index,id */
 877
 878 static int __init alsa_card_bt87x_setup(char *str)
 879 {
 880         static unsigned __initdata nr_dev = 0;
 881
 882         if (nr_dev >= SNDRV_CARDS)
 883                 return 0;
 884         (void)(get_option(&str,&enable[nr_dev]) == 2 &&
 885                get_option(&str,&index[nr_dev]) == 2 &&
 886                get_id(&str,&id[nr_dev]) == 2);
 887         nr_dev++;
 888         return 1;
 889 }
 890
 891 __setup("snd-bt87x=", alsa_card_bt87x_setup);
 892
 893 #endif /* ifndef MODULE */