SAFE public projects git trees. - safe/jmp/linux-2.6/blob - sound/pci/bt87x.c

   1 /*
   2  * bt87x.c - Brooktree Bt878/Bt879 driver for ALSA
   3  *
   4  * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
   5  *
   6  * based on btaudio.c by Gerd Knorr <kraxel@bytesex.org>
   7  *
   8  *
   9  *  This driver is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This driver is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  22  */
  23
  24 #include <sound/driver.h>
  25 #include <linux/init.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/pci.h>
  28 #include <linux/slab.h>
  29 #include <linux/moduleparam.h>
  30 #include <linux/bitops.h>
  31 #include <asm/io.h>
  32 #include <sound/core.h>
  33 #include <sound/pcm.h>
  34 #include <sound/pcm_params.h>
  35 #include <sound/control.h>
  36 #include <sound/initval.h>
  37
  38 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
  39 MODULE_DESCRIPTION("Brooktree Bt87x audio driver");
  40 MODULE_LICENSE("GPL");
  41 MODULE_SUPPORTED_DEVICE("{{Brooktree,Bt878},"
  42                 "{Brooktree,Bt879}}");
  43
  44 static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */
  45 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  46 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
  47 static int digital_rate[SNDRV_CARDS];   /* digital input rate */
  48 static int load_all;    /* allow to load the non-whitelisted cards */
  49
  50 module_param_array(index, int, NULL, 0444);
  51 MODULE_PARM_DESC(index, "Index value for Bt87x soundcard");
  52 module_param_array(id, charp, NULL, 0444);
  53 MODULE_PARM_DESC(id, "ID string for Bt87x soundcard");
  54 module_param_array(enable, bool, NULL, 0444);
  55 MODULE_PARM_DESC(enable, "Enable Bt87x soundcard");
  56 module_param_array(digital_rate, int, NULL, 0444);
  57 MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard");
  58 module_param(load_all, bool, 0444);
  59 MODULE_PARM_DESC(load_all, "Allow to load the non-whitelisted cards");
  60
  61
  62 /* register offsets */
  63 #define REG_INT_STAT            0x100   /* interrupt status */
  64 #define REG_INT_MASK            0x104   /* interrupt mask */
  65 #define REG_GPIO_DMA_CTL        0x10c   /* audio control */
  66 #define REG_PACKET_LEN          0x110   /* audio packet lengths */
  67 #define REG_RISC_STRT_ADD       0x114   /* RISC program start address */
  68 #define REG_RISC_COUNT          0x120   /* RISC program counter */
  69
  70 /* interrupt bits */
  71 #define INT_OFLOW       (1 <<  3)       /* audio A/D overflow */
  72 #define INT_RISCI       (1 << 11)       /* RISC instruction IRQ bit set */
  73 #define INT_FBUS        (1 << 12)       /* FIFO overrun due to bus access latency */
  74 #define INT_FTRGT       (1 << 13)       /* FIFO overrun due to target latency */
  75 #define INT_FDSR        (1 << 14)       /* FIFO data stream resynchronization */
  76 #define INT_PPERR       (1 << 15)       /* PCI parity error */
  77 #define INT_RIPERR      (1 << 16)       /* RISC instruction parity error */
  78 #define INT_PABORT      (1 << 17)       /* PCI master or target abort */
  79 #define INT_OCERR       (1 << 18)       /* invalid opcode */
  80 #define INT_SCERR       (1 << 19)       /* sync counter overflow */
  81 #define INT_RISC_EN     (1 << 27)       /* DMA controller running */
  82 #define INT_RISCS_SHIFT       28        /* RISC status bits */
  83
  84 /* audio control bits */
  85 #define CTL_FIFO_ENABLE         (1 <<  0)       /* enable audio data FIFO */
  86 #define CTL_RISC_ENABLE         (1 <<  1)       /* enable audio DMA controller */
  87 #define CTL_PKTP_4              (0 <<  2)       /* packet mode FIFO trigger point - 4 DWORDs */
  88 #define CTL_PKTP_8              (1 <<  2)       /* 8 DWORDs */
  89 #define CTL_PKTP_16             (2 <<  2)       /* 16 DWORDs */
  90 #define CTL_ACAP_EN             (1 <<  4)       /* enable audio capture */
  91 #define CTL_DA_APP              (1 <<  5)       /* GPIO input */
  92 #define CTL_DA_IOM_AFE          (0 <<  6)       /* audio A/D input */
  93 #define CTL_DA_IOM_DA           (1 <<  6)       /* digital audio input */
  94 #define CTL_DA_SDR_SHIFT               8        /* DDF first stage decimation rate */
  95 #define CTL_DA_SDR_MASK         (0xf<< 8)
  96 #define CTL_DA_LMT              (1 << 12)       /* limit audio data values */
  97 #define CTL_DA_ES2              (1 << 13)       /* enable DDF stage 2 */
  98 #define CTL_DA_SBR              (1 << 14)       /* samples rounded to 8 bits */
  99 #define CTL_DA_DPM              (1 << 15)       /* data packet mode */
 100 #define CTL_DA_LRD_SHIFT              16        /* ALRCK delay */
 101 #define CTL_DA_MLB              (1 << 21)       /* MSB/LSB format */
 102 #define CTL_DA_LRI              (1 << 22)       /* left/right indication */
 103 #define CTL_DA_SCE              (1 << 23)       /* sample clock edge */
 104 #define CTL_A_SEL_STV           (0 << 24)       /* TV tuner audio input */
 105 #define CTL_A_SEL_SFM           (1 << 24)       /* FM audio input */
 106 #define CTL_A_SEL_SML           (2 << 24)       /* mic/line audio input */
 107 #define CTL_A_SEL_SMXC          (3 << 24)       /* MUX bypass */
 108 #define CTL_A_SEL_SHIFT               24
 109 #define CTL_A_SEL_MASK          (3 << 24)
 110 #define CTL_A_PWRDN             (1 << 26)       /* analog audio power-down */
 111 #define CTL_A_G2X               (1 << 27)       /* audio gain boost */
 112 #define CTL_A_GAIN_SHIFT              28        /* audio input gain */
 113 #define CTL_A_GAIN_MASK         (0xf<<28)
 114
 115 /* RISC instruction opcodes */
 116 #define RISC_WRITE      (0x1 << 28)     /* write FIFO data to memory at address */
 117 #define RISC_WRITEC     (0x5 << 28)     /* write FIFO data to memory at current address */
 118 #define RISC_SKIP       (0x2 << 28)     /* skip FIFO data */
 119 #define RISC_JUMP       (0x7 << 28)     /* jump to address */
 120 #define RISC_SYNC       (0x8 << 28)     /* synchronize with FIFO */
 121
 122 /* RISC instruction bits */
 123 #define RISC_BYTES_ENABLE       (0xf << 12)     /* byte enable bits */
 124 #define RISC_RESYNC             (  1 << 15)     /* disable FDSR errors */
 125 #define RISC_SET_STATUS_SHIFT           16      /* set status bits */
 126 #define RISC_RESET_STATUS_SHIFT         20      /* clear status bits */
 127 #define RISC_IRQ                (  1 << 24)     /* interrupt */
 128 #define RISC_EOL                (  1 << 26)     /* end of line */
 129 #define RISC_SOL                (  1 << 27)     /* start of line */
 130
 131 /* SYNC status bits values */
 132 #define RISC_SYNC_FM1   0x6
 133 #define RISC_SYNC_VRO   0xc
 134
 135 #define ANALOG_CLOCK 1792000
 136 #ifdef CONFIG_SND_BT87X_OVERCLOCK
 137 #define CLOCK_DIV_MIN 1
 138 #else
 139 #define CLOCK_DIV_MIN 4
 140 #endif
 141 #define CLOCK_DIV_MAX 15
 142
 143 #define ERROR_INTERRUPTS (INT_FBUS | INT_FTRGT | INT_PPERR | \
 144                           INT_RIPERR | INT_PABORT | INT_OCERR)
 145 #define MY_INTERRUPTS (INT_RISCI | ERROR_INTERRUPTS)
 146
 147 /* SYNC, one WRITE per line, one extra WRITE per page boundary, SYNC, JUMP */
 148 #define MAX_RISC_SIZE ((1 + 255 + (PAGE_ALIGN(255 * 4092) / PAGE_SIZE - 1) + 1 + 1) * 8)
 149
 150 /* Cards with configuration information */
 151 enum snd_bt87x_boardid {
 152         SND_BT87X_BOARD_GENERIC,        /* both an & dig interfaces, 32kHz */
 153         SND_BT87X_BOARD_ANALOG,         /* board with no external A/D */
 154         SND_BT87X_BOARD_OSPREY2x0,
 155         SND_BT87X_BOARD_OSPREY440,
 156         SND_BT87X_BOARD_AVPHONE98,
 157 };
 158
 159 /* Card configuration */
 160 struct snd_bt87x_board {
 161         int dig_rate;           /* Digital input sampling rate */
 162         u32 digital_fmt;        /* Register settings for digital input */
 163         unsigned no_analog:1;   /* No analog input */
 164         unsigned no_digital:1;  /* No digital input */
 165 };
 166
 167 static const __devinitdata struct snd_bt87x_board snd_bt87x_boards[] = {
 168         [SND_BT87X_BOARD_GENERIC] = {
 169                 .dig_rate = 32000,
 170         },
 171         [SND_BT87X_BOARD_ANALOG] = {
 172                 .no_digital = 1,
 173         },
 174         [SND_BT87X_BOARD_OSPREY2x0] = {
 175                 .dig_rate = 44100,
 176                 .digital_fmt = CTL_DA_LRI | (1 << CTL_DA_LRD_SHIFT),
 177         },
 178         [SND_BT87X_BOARD_OSPREY440] = {
 179                 .dig_rate = 32000,
 180                 .digital_fmt = CTL_DA_LRI | (1 << CTL_DA_LRD_SHIFT),
 181                 .no_analog = 1,
 182         },
 183         [SND_BT87X_BOARD_AVPHONE98] = {
 184                 .dig_rate = 48000,
 185         },
 186 };
 187
 188 struct snd_bt87x {
 189         struct snd_card *card;
 190         struct pci_dev *pci;
 191         struct snd_bt87x_board board;
 192
 193         void __iomem *mmio;
 194         int irq;
 195
 196         spinlock_t reg_lock;
 197         unsigned long opened;
 198         struct snd_pcm_substream *substream;
 199
 200         struct snd_dma_buffer dma_risc;
 201         unsigned int line_bytes;
 202         unsigned int lines;
 203
 204         u32 reg_control;
 205         u32 interrupt_mask;
 206
 207         int current_line;
 208
 209         int pci_parity_errors;
 210 };
 211
 212 enum { DEVICE_DIGITAL, DEVICE_ANALOG };
 213
 214 static inline u32 snd_bt87x_readl(struct snd_bt87x *chip, u32 reg)
 215 {
 216         return readl(chip->mmio + reg);
 217 }
 218
 219 static inline void snd_bt87x_writel(struct snd_bt87x *chip, u32 reg, u32 value)
 220 {
 221         writel(value, chip->mmio + reg);
 222 }
 223
 224 static int snd_bt87x_create_risc(struct snd_bt87x *chip, struct snd_pcm_substream *substream,
 225                                  unsigned int periods, unsigned int period_bytes)
 226 {
 227         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
 228         unsigned int i, offset;
 229         u32 *risc;
 230
 231         if (chip->dma_risc.area == NULL) {
 232                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 233                                         PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
 234                         return -ENOMEM;
 235         }
 236         risc = (u32 *)chip->dma_risc.area;
 237         offset = 0;
 238         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
 239         *risc++ = cpu_to_le32(0);
 240         for (i = 0; i < periods; ++i) {
 241                 u32 rest;
 242
 243                 rest = period_bytes;
 244                 do {
 245                         u32 cmd, len;
 246
 247                         len = PAGE_SIZE - (offset % PAGE_SIZE);
 248                         if (len > rest)
 249                                 len = rest;
 250                         cmd = RISC_WRITE | len;
 251                         if (rest == period_bytes) {
 252                                 u32 block = i * 16 / periods;
 253                                 cmd |= RISC_SOL;
 254                                 cmd |= block << RISC_SET_STATUS_SHIFT;
 255                                 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
 256                         }
 257                         if (len == rest)
 258                                 cmd |= RISC_EOL | RISC_IRQ;
 259                         *risc++ = cpu_to_le32(cmd);
 260                         *risc++ = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, offset));
 261                         offset += len;
 262                         rest -= len;
 263                 } while (rest > 0);
 264         }
 265         *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
 266         *risc++ = cpu_to_le32(0);
 267         *risc++ = cpu_to_le32(RISC_JUMP);
 268         *risc++ = cpu_to_le32(chip->dma_risc.addr);
 269         chip->line_bytes = period_bytes;
 270         chip->lines = periods;
 271         return 0;
 272 }
 273
 274 static void snd_bt87x_free_risc(struct snd_bt87x *chip)
 275 {
 276         if (chip->dma_risc.area) {
 277                 snd_dma_free_pages(&chip->dma_risc);
 278                 chip->dma_risc.area = NULL;
 279         }
 280 }
 281
 282 static void snd_bt87x_pci_error(struct snd_bt87x *chip, unsigned int status)
 283 {
 284         u16 pci_status;
 285
 286         pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
 287         pci_status &= PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
 288                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
 289                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY;
 290         pci_write_config_word(chip->pci, PCI_STATUS, pci_status);
 291         if (pci_status != PCI_STATUS_DETECTED_PARITY)
 292                 snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
 293                            status & ERROR_INTERRUPTS, pci_status);
 294         else {
 295                 snd_printk(KERN_ERR "Aieee - PCI parity error detected!\n");
 296                 /* error 'handling' similar to aic7xxx_pci.c: */
 297                 chip->pci_parity_errors++;
 298                 if (chip->pci_parity_errors > 20) {
 299                         snd_printk(KERN_ERR "Too many PCI parity errors observed.\n");
 300                         snd_printk(KERN_ERR "Some device on this bus is generating bad parity.\n");
 301                         snd_printk(KERN_ERR "This is an error *observed by*, not *generated by*, this card.\n");
 302                         snd_printk(KERN_ERR "PCI parity error checking has been disabled.\n");
 303                         chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR);
 304                         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
 305                 }
 306         }
 307 }
 308
 309 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id)
 310 {
 311         struct snd_bt87x *chip = dev_id;
 312         unsigned int status, irq_status;
 313
 314         status = snd_bt87x_readl(chip, REG_INT_STAT);
 315         irq_status = status & chip->interrupt_mask;
 316         if (!irq_status)
 317                 return IRQ_NONE;
 318         snd_bt87x_writel(chip, REG_INT_STAT, irq_status);
 319
 320         if (irq_status & ERROR_INTERRUPTS) {
 321                 if (irq_status & (INT_FBUS | INT_FTRGT))
 322                         snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
 323                 if (irq_status & INT_OCERR)
 324                         snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
 325                 if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT))
 326                         snd_bt87x_pci_error(chip, irq_status);
 327         }
 328         if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) {
 329                 int current_block, irq_block;
 330
 331                 /* assume that exactly one line has been recorded */
 332                 chip->current_line = (chip->current_line + 1) % chip->lines;
 333                 /* but check if some interrupts have been skipped */
 334                 current_block = chip->current_line * 16 / chip->lines;
 335                 irq_block = status >> INT_RISCS_SHIFT;
 336                 if (current_block != irq_block)
 337                         chip->current_line = (irq_block * chip->lines + 15) / 16;
 338
 339                 snd_pcm_period_elapsed(chip->substream);
 340         }
 341         return IRQ_HANDLED;
 342 }
 343
 344 static struct snd_pcm_hardware snd_bt87x_digital_hw = {
 345         .info = SNDRV_PCM_INFO_MMAP |
 346                 SNDRV_PCM_INFO_INTERLEAVED |
 347                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 348                 SNDRV_PCM_INFO_MMAP_VALID,
 349         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 350         .rates = 0, /* set at runtime */
 351         .channels_min = 2,
 352         .channels_max = 2,
 353         .buffer_bytes_max = 255 * 4092,
 354         .period_bytes_min = 32,
 355         .period_bytes_max = 4092,
 356         .periods_min = 2,
 357         .periods_max = 255,
 358 };
 359
 360 static struct snd_pcm_hardware snd_bt87x_analog_hw = {
 361         .info = SNDRV_PCM_INFO_MMAP |
 362                 SNDRV_PCM_INFO_INTERLEAVED |
 363                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 364                 SNDRV_PCM_INFO_MMAP_VALID,
 365         .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
 366         .rates = SNDRV_PCM_RATE_KNOT,
 367         .rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX,
 368         .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN,
 369         .channels_min = 1,
 370         .channels_max = 1,
 371         .buffer_bytes_max = 255 * 4092,
 372         .period_bytes_min = 32,
 373         .period_bytes_max = 4092,
 374         .periods_min = 2,
 375         .periods_max = 255,
 376 };
 377
 378 static int snd_bt87x_set_digital_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
 379 {
 380         chip->reg_control |= CTL_DA_IOM_DA;
 381         runtime->hw = snd_bt87x_digital_hw;
 382         runtime->hw.rates = snd_pcm_rate_to_rate_bit(chip->board.dig_rate);
 383         runtime->hw.rate_min = chip->board.dig_rate;
 384         runtime->hw.rate_max = chip->board.dig_rate;
 385         return 0;
 386 }
 387
 388 static int snd_bt87x_set_analog_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
 389 {
 390         static struct snd_ratnum analog_clock = {
 391                 .num = ANALOG_CLOCK,
 392                 .den_min = CLOCK_DIV_MIN,
 393                 .den_max = CLOCK_DIV_MAX,
 394                 .den_step = 1
 395         };
 396         static struct snd_pcm_hw_constraint_ratnums constraint_rates = {
 397                 .nrats = 1,
 398                 .rats = &analog_clock
 399         };
 400
 401         chip->reg_control &= ~CTL_DA_IOM_DA;
 402         runtime->hw = snd_bt87x_analog_hw;
 403         return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 404                                              &constraint_rates);
 405 }
 406
 407 static int snd_bt87x_pcm_open(struct snd_pcm_substream *substream)
 408 {
 409         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 410         struct snd_pcm_runtime *runtime = substream->runtime;
 411         int err;
 412
 413         if (test_and_set_bit(0, &chip->opened))
 414                 return -EBUSY;
 415
 416         if (substream->pcm->device == DEVICE_DIGITAL)
 417                 err = snd_bt87x_set_digital_hw(chip, runtime);
 418         else
 419                 err = snd_bt87x_set_analog_hw(chip, runtime);
 420         if (err < 0)
 421                 goto _error;
 422
 423         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
 424         if (err < 0)
 425                 goto _error;
 426
 427         chip->substream = substream;
 428         return 0;
 429
 430 _error:
 431         clear_bit(0, &chip->opened);
 432         smp_mb__after_clear_bit();
 433         return err;
 434 }
 435
 436 static int snd_bt87x_close(struct snd_pcm_substream *substream)
 437 {
 438         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 439
 440         chip->substream = NULL;
 441         clear_bit(0, &chip->opened);
 442         smp_mb__after_clear_bit();
 443         return 0;
 444 }
 445
 446 static int snd_bt87x_hw_params(struct snd_pcm_substream *substream,
 447                                struct snd_pcm_hw_params *hw_params)
 448 {
 449         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 450         int err;
 451
 452         err = snd_pcm_lib_malloc_pages(substream,
 453                                        params_buffer_bytes(hw_params));
 454         if (err < 0)
 455                 return err;
 456         return snd_bt87x_create_risc(chip, substream,
 457                                      params_periods(hw_params),
 458                                      params_period_bytes(hw_params));
 459 }
 460
 461 static int snd_bt87x_hw_free(struct snd_pcm_substream *substream)
 462 {
 463         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 464
 465         snd_bt87x_free_risc(chip);
 466         snd_pcm_lib_free_pages(substream);
 467         return 0;
 468 }
 469
 470 static int snd_bt87x_prepare(struct snd_pcm_substream *substream)
 471 {
 472         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 473         struct snd_pcm_runtime *runtime = substream->runtime;
 474         int decimation;
 475
 476         spin_lock_irq(&chip->reg_lock);
 477         chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
 478         decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
 479         chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
 480         if (runtime->format == SNDRV_PCM_FORMAT_S8)
 481                 chip->reg_control |= CTL_DA_SBR;
 482         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 483         spin_unlock_irq(&chip->reg_lock);
 484         return 0;
 485 }
 486
 487 static int snd_bt87x_start(struct snd_bt87x *chip)
 488 {
 489         spin_lock(&chip->reg_lock);
 490         chip->current_line = 0;
 491         chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
 492         snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
 493         snd_bt87x_writel(chip, REG_PACKET_LEN,
 494                          chip->line_bytes | (chip->lines << 16));
 495         snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
 496         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 497         spin_unlock(&chip->reg_lock);
 498         return 0;
 499 }
 500
 501 static int snd_bt87x_stop(struct snd_bt87x *chip)
 502 {
 503         spin_lock(&chip->reg_lock);
 504         chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
 505         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 506         snd_bt87x_writel(chip, REG_INT_MASK, 0);
 507         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
 508         spin_unlock(&chip->reg_lock);
 509         return 0;
 510 }
 511
 512 static int snd_bt87x_trigger(struct snd_pcm_substream *substream, int cmd)
 513 {
 514         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 515
 516         switch (cmd) {
 517         case SNDRV_PCM_TRIGGER_START:
 518                 return snd_bt87x_start(chip);
 519         case SNDRV_PCM_TRIGGER_STOP:
 520                 return snd_bt87x_stop(chip);
 521         default:
 522                 return -EINVAL;
 523         }
 524 }
 525
 526 static snd_pcm_uframes_t snd_bt87x_pointer(struct snd_pcm_substream *substream)
 527 {
 528         struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
 529         struct snd_pcm_runtime *runtime = substream->runtime;
 530
 531         return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
 532 }
 533
 534 static struct snd_pcm_ops snd_bt87x_pcm_ops = {
 535         .open = snd_bt87x_pcm_open,
 536         .close = snd_bt87x_close,
 537         .ioctl = snd_pcm_lib_ioctl,
 538         .hw_params = snd_bt87x_hw_params,
 539         .hw_free = snd_bt87x_hw_free,
 540         .prepare = snd_bt87x_prepare,
 541         .trigger = snd_bt87x_trigger,
 542         .pointer = snd_bt87x_pointer,
 543         .page = snd_pcm_sgbuf_ops_page,
 544 };
 545
 546 static int snd_bt87x_capture_volume_info(struct snd_kcontrol *kcontrol,
 547                                          struct snd_ctl_elem_info *info)
 548 {
 549         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 550         info->count = 1;
 551         info->value.integer.min = 0;
 552         info->value.integer.max = 15;
 553         return 0;
 554 }
 555
 556 static int snd_bt87x_capture_volume_get(struct snd_kcontrol *kcontrol,
 557                                         struct snd_ctl_elem_value *value)
 558 {
 559         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 560
 561         value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
 562         return 0;
 563 }
 564
 565 static int snd_bt87x_capture_volume_put(struct snd_kcontrol *kcontrol,
 566                                         struct snd_ctl_elem_value *value)
 567 {
 568         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 569         u32 old_control;
 570         int changed;
 571
 572         spin_lock_irq(&chip->reg_lock);
 573         old_control = chip->reg_control;
 574         chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
 575                 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
 576         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 577         changed = old_control != chip->reg_control;
 578         spin_unlock_irq(&chip->reg_lock);
 579         return changed;
 580 }
 581
 582 static struct snd_kcontrol_new snd_bt87x_capture_volume = {
 583         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 584         .name = "Capture Volume",
 585         .info = snd_bt87x_capture_volume_info,
 586         .get = snd_bt87x_capture_volume_get,
 587         .put = snd_bt87x_capture_volume_put,
 588 };
 589
 590 #define snd_bt87x_capture_boost_info    snd_ctl_boolean_mono_info
 591
 592 static int snd_bt87x_capture_boost_get(struct snd_kcontrol *kcontrol,
 593                                        struct snd_ctl_elem_value *value)
 594 {
 595         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 596
 597         value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
 598         return 0;
 599 }
 600
 601 static int snd_bt87x_capture_boost_put(struct snd_kcontrol *kcontrol,
 602                                        struct snd_ctl_elem_value *value)
 603 {
 604         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 605         u32 old_control;
 606         int changed;
 607
 608         spin_lock_irq(&chip->reg_lock);
 609         old_control = chip->reg_control;
 610         chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
 611                 | (value->value.integer.value[0] ? CTL_A_G2X : 0);
 612         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 613         changed = chip->reg_control != old_control;
 614         spin_unlock_irq(&chip->reg_lock);
 615         return changed;
 616 }
 617
 618 static struct snd_kcontrol_new snd_bt87x_capture_boost = {
 619         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 620         .name = "Capture Boost",
 621         .info = snd_bt87x_capture_boost_info,
 622         .get = snd_bt87x_capture_boost_get,
 623         .put = snd_bt87x_capture_boost_put,
 624 };
 625
 626 static int snd_bt87x_capture_source_info(struct snd_kcontrol *kcontrol,
 627                                          struct snd_ctl_elem_info *info)
 628 {
 629         static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"};
 630
 631         info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 632         info->count = 1;
 633         info->value.enumerated.items = 3;
 634         if (info->value.enumerated.item > 2)
 635                 info->value.enumerated.item = 2;
 636         strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]);
 637         return 0;
 638 }
 639
 640 static int snd_bt87x_capture_source_get(struct snd_kcontrol *kcontrol,
 641                                         struct snd_ctl_elem_value *value)
 642 {
 643         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 644
 645         value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
 646         return 0;
 647 }
 648
 649 static int snd_bt87x_capture_source_put(struct snd_kcontrol *kcontrol,
 650                                         struct snd_ctl_elem_value *value)
 651 {
 652         struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
 653         u32 old_control;
 654         int changed;
 655
 656         spin_lock_irq(&chip->reg_lock);
 657         old_control = chip->reg_control;
 658         chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
 659                 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
 660         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 661         changed = chip->reg_control != old_control;
 662         spin_unlock_irq(&chip->reg_lock);
 663         return changed;
 664 }
 665
 666 static struct snd_kcontrol_new snd_bt87x_capture_source = {
 667         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 668         .name = "Capture Source",
 669         .info = snd_bt87x_capture_source_info,
 670         .get = snd_bt87x_capture_source_get,
 671         .put = snd_bt87x_capture_source_put,
 672 };
 673
 674 static int snd_bt87x_free(struct snd_bt87x *chip)
 675 {
 676         if (chip->mmio) {
 677                 snd_bt87x_stop(chip);
 678                 if (chip->irq >= 0)
 679                         synchronize_irq(chip->irq);
 680
 681                 iounmap(chip->mmio);
 682         }
 683         if (chip->irq >= 0)
 684                 free_irq(chip->irq, chip);
 685         pci_release_regions(chip->pci);
 686         pci_disable_device(chip->pci);
 687         kfree(chip);
 688         return 0;
 689 }
 690
 691 static int snd_bt87x_dev_free(struct snd_device *device)
 692 {
 693         struct snd_bt87x *chip = device->device_data;
 694         return snd_bt87x_free(chip);
 695 }
 696
 697 static int __devinit snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name)
 698 {
 699         int err;
 700         struct snd_pcm *pcm;
 701
 702         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
 703         if (err < 0)
 704                 return err;
 705         pcm->private_data = chip;
 706         strcpy(pcm->name, name);
 707         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
 708         return snd_pcm_lib_preallocate_pages_for_all(pcm,
 709                                                      SNDRV_DMA_TYPE_DEV_SG,
 710                                                      snd_dma_pci_data(chip->pci),
 711                                                         128 * 1024,
 712                                                         ALIGN(255 * 4092, 1024));
 713 }
 714
 715 static int __devinit snd_bt87x_create(struct snd_card *card,
 716                                       struct pci_dev *pci,
 717                                       struct snd_bt87x **rchip)
 718 {
 719         struct snd_bt87x *chip;
 720         int err;
 721         static struct snd_device_ops ops = {
 722                 .dev_free = snd_bt87x_dev_free
 723         };
 724
 725         *rchip = NULL;
 726
 727         err = pci_enable_device(pci);
 728         if (err < 0)
 729                 return err;
 730
 731         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 732         if (!chip) {
 733                 pci_disable_device(pci);
 734                 return -ENOMEM;
 735         }
 736         chip->card = card;
 737         chip->pci = pci;
 738         chip->irq = -1;
 739         spin_lock_init(&chip->reg_lock);
 740
 741         if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
 742                 kfree(chip);
 743                 pci_disable_device(pci);
 744                 return err;
 745         }
 746         chip->mmio = ioremap_nocache(pci_resource_start(pci, 0),
 747                                      pci_resource_len(pci, 0));
 748         if (!chip->mmio) {
 749                 snd_printk(KERN_ERR "cannot remap io memory\n");
 750                 err = -ENOMEM;
 751                 goto fail;
 752         }
 753
 754         chip->reg_control = CTL_DA_ES2 | CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
 755         chip->interrupt_mask = MY_INTERRUPTS;
 756         snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
 757         snd_bt87x_writel(chip, REG_INT_MASK, 0);
 758         snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
 759
 760         err = request_irq(pci->irq, snd_bt87x_interrupt, IRQF_SHARED,
 761                           "Bt87x audio", chip);
 762         if (err < 0) {
 763                 snd_printk(KERN_ERR "cannot grab irq %d\n", pci->irq);
 764                 goto fail;
 765         }
 766         chip->irq = pci->irq;
 767         pci_set_master(pci);
 768         synchronize_irq(chip->irq);
 769
 770         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 771         if (err < 0)
 772                 goto fail;
 773
 774         snd_card_set_dev(card, &pci->dev);
 775         *rchip = chip;
 776         return 0;
 777
 778 fail:
 779         snd_bt87x_free(chip);
 780         return err;
 781 }
 782
 783 #define BT_DEVICE(chip, subvend, subdev, id) \
 784         { .vendor = PCI_VENDOR_ID_BROOKTREE, \
 785           .device = chip, \
 786           .subvendor = subvend, .subdevice = subdev, \
 787           .driver_data = SND_BT87X_BOARD_ ## id }
 788 /* driver_data is the card id for that device */
 789
 790 static struct pci_device_id snd_bt87x_ids[] = {
 791         /* Hauppauge WinTV series */
 792         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, GENERIC),
 793         /* Hauppauge WinTV series */
 794         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, GENERIC),
 795         /* Viewcast Osprey 200 */
 796         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, OSPREY2x0),
 797         /* Viewcast Osprey 440 (rate is configurable via gpio) */
 798         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff07, OSPREY440),
 799         /* ATI TV-Wonder */
 800         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1002, 0x0001, GENERIC),
 801         /* Leadtek Winfast tv 2000xp delux */
 802         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x107d, 0x6606, GENERIC),
 803         /* Voodoo TV 200 */
 804         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x121a, 0x3000, GENERIC),
 805         /* AVerMedia Studio No. 103, 203, ...? */
 806         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1461, 0x0003, AVPHONE98),
 807         /* Prolink PixelView PV-M4900 */
 808         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1554, 0x4011, GENERIC),
 809         /* Pinnacle  Studio PCTV rave */
 810         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0xbd11, 0x1200, GENERIC),
 811         { }
 812 };
 813 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
 814
 815 /* cards known not to have audio
 816  * (DVB cards use the audio function to transfer MPEG data) */
 817 static struct {
 818         unsigned short subvendor, subdevice;
 819 } blacklist[] __devinitdata = {
 820         {0x0071, 0x0101}, /* Nebula Electronics DigiTV */
 821         {0x11bd, 0x001c}, /* Pinnacle PCTV Sat */
 822         {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
 823         {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */
 824         {0x1461, 0x0771}, /* AVermedia DVB-T 771 */
 825         {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */
 826         {0x18ac, 0xd500}, /* DVICO FusionHDTV 5 Lite */
 827         {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */
 828         {0x18ac, 0xdb11}, /* Ultraview DVB-T Lite */
 829         {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */
 830         {0x7063, 0x2000}, /* pcHDTV HD-2000 TV */
 831 };
 832
 833 static struct pci_driver driver;
 834
 835 /* return the id of the card, or a negative value if it's blacklisted */
 836 static int __devinit snd_bt87x_detect_card(struct pci_dev *pci)
 837 {
 838         int i;
 839         const struct pci_device_id *supported;
 840
 841         supported = pci_match_device(&driver, pci);
 842         if (supported && supported->driver_data > 0)
 843                 return supported->driver_data;
 844
 845         for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
 846                 if (blacklist[i].subvendor == pci->subsystem_vendor &&
 847                     blacklist[i].subdevice == pci->subsystem_device) {
 848                         snd_printdd(KERN_INFO "card %#04x-%#04x:%#04x has no audio\n",
 849                                     pci->device, pci->subsystem_vendor, pci->subsystem_device);
 850                         return -EBUSY;
 851                 }
 852
 853         snd_printk(KERN_INFO "unknown card %#04x-%#04x:%#04x\n",
 854                    pci->device, pci->subsystem_vendor, pci->subsystem_device);
 855         snd_printk(KERN_DEBUG "please mail id, board name, and, "
 856                    "if it works, the correct digital_rate option to "
 857                    "<alsa-devel@alsa-project.org>\n");
 858         return SND_BT87X_BOARD_GENERIC;
 859 }
 860
 861 static int __devinit snd_bt87x_probe(struct pci_dev *pci,
 862                                      const struct pci_device_id *pci_id)
 863 {
 864         static int dev;
 865         struct snd_card *card;
 866         struct snd_bt87x *chip;
 867         int err;
 868         enum snd_bt87x_boardid boardid;
 869
 870         if (!pci_id->driver_data) {
 871                 err = snd_bt87x_detect_card(pci);
 872                 if (err < 0)
 873                         return -ENODEV;
 874                 boardid = err;
 875         } else
 876                 boardid = pci_id->driver_data;
 877
 878         if (dev >= SNDRV_CARDS)
 879                 return -ENODEV;
 880         if (!enable[dev]) {
 881                 ++dev;
 882                 return -ENOENT;
 883         }
 884
 885         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
 886         if (!card)
 887                 return -ENOMEM;
 888
 889         err = snd_bt87x_create(card, pci, &chip);
 890         if (err < 0)
 891                 goto _error;
 892
 893         memcpy(&chip->board, &snd_bt87x_boards[boardid], sizeof(chip->board));
 894
 895         if (!chip->board.no_digital) {
 896                 if (digital_rate[dev] > 0)
 897                         chip->board.dig_rate = digital_rate[dev];
 898
 899                 chip->reg_control |= chip->board.digital_fmt;
 900
 901                 err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
 902                 if (err < 0)
 903                         goto _error;
 904         }
 905         if (!chip->board.no_analog) {
 906                 err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
 907                 if (err < 0)
 908                         goto _error;
 909                 err = snd_ctl_add(card, snd_ctl_new1(
 910                                   &snd_bt87x_capture_volume, chip));
 911                 if (err < 0)
 912                         goto _error;
 913                 err = snd_ctl_add(card, snd_ctl_new1(
 914                                   &snd_bt87x_capture_boost, chip));
 915                 if (err < 0)
 916                         goto _error;
 917                 err = snd_ctl_add(card, snd_ctl_new1(
 918                                   &snd_bt87x_capture_source, chip));
 919                 if (err < 0)
 920                         goto _error;
 921         }
 922         snd_printk(KERN_INFO "bt87x%d: Using board %d, %sanalog, %sdigital "
 923                    "(rate %d Hz)\n", dev, boardid,
 924                    chip->board.no_analog ? "no " : "",
 925                    chip->board.no_digital ? "no " : "", chip->board.dig_rate);
 926
 927         strcpy(card->driver, "Bt87x");
 928         sprintf(card->shortname, "Brooktree Bt%x", pci->device);
 929         sprintf(card->longname, "%s at %#llx, irq %i",
 930                 card->shortname, (unsigned long long)pci_resource_start(pci, 0),
 931                 chip->irq);
 932         strcpy(card->mixername, "Bt87x");
 933
 934         err = snd_card_register(card);
 935         if (err < 0)
 936                 goto _error;
 937
 938         pci_set_drvdata(pci, card);
 939         ++dev;
 940         return 0;
 941
 942 _error:
 943         snd_card_free(card);
 944         return err;
 945 }
 946
 947 static void __devexit snd_bt87x_remove(struct pci_dev *pci)
 948 {
 949         snd_card_free(pci_get_drvdata(pci));
 950         pci_set_drvdata(pci, NULL);
 951 }
 952
 953 /* default entries for all Bt87x cards - it's not exported */
 954 /* driver_data is set to 0 to call detection */
 955 static struct pci_device_id snd_bt87x_default_ids[] __devinitdata = {
 956         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, PCI_ANY_ID, PCI_ANY_ID, GENERIC),
 957         BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, PCI_ANY_ID, PCI_ANY_ID, GENERIC),
 958         { }
 959 };
 960
 961 static struct pci_driver driver = {
 962         .name = "Bt87x",
 963         .id_table = snd_bt87x_ids,
 964         .probe = snd_bt87x_probe,
 965         .remove = __devexit_p(snd_bt87x_remove),
 966 };
 967
 968 static int __init alsa_card_bt87x_init(void)
 969 {
 970         if (load_all)
 971                 driver.id_table = snd_bt87x_default_ids;
 972         return pci_register_driver(&driver);
 973 }
 974
 975 static void __exit alsa_card_bt87x_exit(void)
 976 {
 977         pci_unregister_driver(&driver);
 978 }
 979
 980 module_init(alsa_card_bt87x_init)
 981 module_exit(alsa_card_bt87x_exit)