1 /* 2 * bt87x.c - Brooktree Bt878/Bt879 driver for ALSA 3 * 4 * Copyright (c) Clemens Ladisch <clemens@ladisch.de> 5 * 6 * based on btaudio.c by Gerd Knorr <kraxel@bytesex.org> 7 * 8 * 9 * This driver is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This driver is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 */ 23 24 #include <sound/driver.h> 25 #include <linux/init.h> 26 #include <linux/interrupt.h> 27 #include <linux/pci.h> 28 #include <linux/slab.h> 29 #include <linux/moduleparam.h> 30 #include <linux/bitops.h> 31 #include <asm/io.h> 32 #include <sound/core.h> 33 #include <sound/pcm.h> 34 #include <sound/pcm_params.h> 35 #include <sound/control.h> 36 #include <sound/initval.h> 37 38 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); 39 MODULE_DESCRIPTION("Brooktree Bt87x audio driver"); 40 MODULE_LICENSE("GPL"); 41 MODULE_SUPPORTED_DEVICE("{{Brooktree,Bt878}," 42 "{Brooktree,Bt879}}"); 43 44 static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */ 45 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ 46 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */ 47 static int digital_rate[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = 0 }; /* digital input rate */ 48 static int load_all; /* allow to load the non-whitelisted cards */ 49 50 module_param_array(index, int, NULL, 0444); 51 MODULE_PARM_DESC(index, "Index value for Bt87x soundcard"); 52 module_param_array(id, charp, NULL, 0444); 53 MODULE_PARM_DESC(id, "ID string for Bt87x soundcard"); 54 module_param_array(enable, bool, NULL, 0444); 55 MODULE_PARM_DESC(enable, "Enable Bt87x soundcard"); 56 module_param_array(digital_rate, int, NULL, 0444); 57 MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard"); 58 module_param(load_all, bool, 0444); 59 MODULE_PARM_DESC(load_all, "Allow to load the non-whitelisted cards"); 60 61 62 /* register offsets */ 63 #define REG_INT_STAT 0x100 /* interrupt status */ 64 #define REG_INT_MASK 0x104 /* interrupt mask */ 65 #define REG_GPIO_DMA_CTL 0x10c /* audio control */ 66 #define REG_PACKET_LEN 0x110 /* audio packet lengths */ 67 #define REG_RISC_STRT_ADD 0x114 /* RISC program start address */ 68 #define REG_RISC_COUNT 0x120 /* RISC program counter */ 69 70 /* interrupt bits */ 71 #define INT_OFLOW (1 << 3) /* audio A/D overflow */ 72 #define INT_RISCI (1 << 11) /* RISC instruction IRQ bit set */ 73 #define INT_FBUS (1 << 12) /* FIFO overrun due to bus access latency */ 74 #define INT_FTRGT (1 << 13) /* FIFO overrun due to target latency */ 75 #define INT_FDSR (1 << 14) /* FIFO data stream resynchronization */ 76 #define INT_PPERR (1 << 15) /* PCI parity error */ 77 #define INT_RIPERR (1 << 16) /* RISC instruction parity error */ 78 #define INT_PABORT (1 << 17) /* PCI master or target abort */ 79 #define INT_OCERR (1 << 18) /* invalid opcode */ 80 #define INT_SCERR (1 << 19) /* sync counter overflow */ 81 #define INT_RISC_EN (1 << 27) /* DMA controller running */ 82 #define INT_RISCS_SHIFT 28 /* RISC status bits */ 83 84 /* audio control bits */ 85 #define CTL_FIFO_ENABLE (1 << 0) /* enable audio data FIFO */ 86 #define CTL_RISC_ENABLE (1 << 1) /* enable audio DMA controller */ 87 #define CTL_PKTP_4 (0 << 2) /* packet mode FIFO trigger point - 4 DWORDs */ 88 #define CTL_PKTP_8 (1 << 2) /* 8 DWORDs */ 89 #define CTL_PKTP_16 (2 << 2) /* 16 DWORDs */ 90 #define CTL_ACAP_EN (1 << 4) /* enable audio capture */ 91 #define CTL_DA_APP (1 << 5) /* GPIO input */ 92 #define CTL_DA_IOM_AFE (0 << 6) /* audio A/D input */ 93 #define CTL_DA_IOM_DA (1 << 6) /* digital audio input */ 94 #define CTL_DA_SDR_SHIFT 8 /* DDF first stage decimation rate */ 95 #define CTL_DA_SDR_MASK (0xf<< 8) 96 #define CTL_DA_LMT (1 << 12) /* limit audio data values */ 97 #define CTL_DA_ES2 (1 << 13) /* enable DDF stage 2 */ 98 #define CTL_DA_SBR (1 << 14) /* samples rounded to 8 bits */ 99 #define CTL_DA_DPM (1 << 15) /* data packet mode */ 100 #define CTL_DA_LRD_SHIFT 16 /* ALRCK delay */ 101 #define CTL_DA_MLB (1 << 21) /* MSB/LSB format */ 102 #define CTL_DA_LRI (1 << 22) /* left/right indication */ 103 #define CTL_DA_SCE (1 << 23) /* sample clock edge */ 104 #define CTL_A_SEL_STV (0 << 24) /* TV tuner audio input */ 105 #define CTL_A_SEL_SFM (1 << 24) /* FM audio input */ 106 #define CTL_A_SEL_SML (2 << 24) /* mic/line audio input */ 107 #define CTL_A_SEL_SMXC (3 << 24) /* MUX bypass */ 108 #define CTL_A_SEL_SHIFT 24 109 #define CTL_A_SEL_MASK (3 << 24) 110 #define CTL_A_PWRDN (1 << 26) /* analog audio power-down */ 111 #define CTL_A_G2X (1 << 27) /* audio gain boost */ 112 #define CTL_A_GAIN_SHIFT 28 /* audio input gain */ 113 #define CTL_A_GAIN_MASK (0xf<<28) 114 115 /* RISC instruction opcodes */ 116 #define RISC_WRITE (0x1 << 28) /* write FIFO data to memory at address */ 117 #define RISC_WRITEC (0x5 << 28) /* write FIFO data to memory at current address */ 118 #define RISC_SKIP (0x2 << 28) /* skip FIFO data */ 119 #define RISC_JUMP (0x7 << 28) /* jump to address */ 120 #define RISC_SYNC (0x8 << 28) /* synchronize with FIFO */ 121 122 /* RISC instruction bits */ 123 #define RISC_BYTES_ENABLE (0xf << 12) /* byte enable bits */ 124 #define RISC_RESYNC ( 1 << 15) /* disable FDSR errors */ 125 #define RISC_SET_STATUS_SHIFT 16 /* set status bits */ 126 #define RISC_RESET_STATUS_SHIFT 20 /* clear status bits */ 127 #define RISC_IRQ ( 1 << 24) /* interrupt */ 128 #define RISC_EOL ( 1 << 26) /* end of line */ 129 #define RISC_SOL ( 1 << 27) /* start of line */ 130 131 /* SYNC status bits values */ 132 #define RISC_SYNC_FM1 0x6 133 #define RISC_SYNC_VRO 0xc 134 135 #define ANALOG_CLOCK 1792000 136 #ifdef CONFIG_SND_BT87X_OVERCLOCK 137 #define CLOCK_DIV_MIN 1 138 #else 139 #define CLOCK_DIV_MIN 4 140 #endif 141 #define CLOCK_DIV_MAX 15 142 143 #define ERROR_INTERRUPTS (INT_FBUS | INT_FTRGT | INT_PPERR | \ 144 INT_RIPERR | INT_PABORT | INT_OCERR) 145 #define MY_INTERRUPTS (INT_RISCI | ERROR_INTERRUPTS) 146 147 /* SYNC, one WRITE per line, one extra WRITE per page boundary, SYNC, JUMP */ 148 #define MAX_RISC_SIZE ((1 + 255 + (PAGE_ALIGN(255 * 4092) / PAGE_SIZE - 1) + 1 + 1) * 8) 149 150 typedef struct snd_bt87x bt87x_t; 151 struct snd_bt87x { 152 snd_card_t *card; 153 struct pci_dev *pci; 154 155 void __iomem *mmio; 156 int irq; 157 158 int dig_rate; 159 160 spinlock_t reg_lock; 161 long opened; 162 snd_pcm_substream_t *substream; 163 164 struct snd_dma_buffer dma_risc; 165 unsigned int line_bytes; 166 unsigned int lines; 167 168 u32 reg_control; 169 u32 interrupt_mask; 170 171 int current_line; 172 173 int pci_parity_errors; 174 }; 175 176 enum { DEVICE_DIGITAL, DEVICE_ANALOG }; 177 178 static inline u32 snd_bt87x_readl(bt87x_t *chip, u32 reg) 179 { 180 return readl(chip->mmio + reg); 181 } 182 183 static inline void snd_bt87x_writel(bt87x_t *chip, u32 reg, u32 value) 184 { 185 writel(value, chip->mmio + reg); 186 } 187 188 static int snd_bt87x_create_risc(bt87x_t *chip, snd_pcm_substream_t *substream, 189 unsigned int periods, unsigned int period_bytes) 190 { 191 struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream); 192 unsigned int i, offset; 193 u32 *risc; 194 195 if (chip->dma_risc.area == NULL) { 196 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci), 197 PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0) 198 return -ENOMEM; 199 } 200 risc = (u32 *)chip->dma_risc.area; 201 offset = 0; 202 *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1); 203 *risc++ = cpu_to_le32(0); 204 for (i = 0; i < periods; ++i) { 205 u32 rest; 206 207 rest = period_bytes; 208 do { 209 u32 cmd, len; 210 211 len = PAGE_SIZE - (offset % PAGE_SIZE); 212 if (len > rest) 213 len = rest; 214 cmd = RISC_WRITE | len; 215 if (rest == period_bytes) { 216 u32 block = i * 16 / periods; 217 cmd |= RISC_SOL; 218 cmd |= block << RISC_SET_STATUS_SHIFT; 219 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT; 220 } 221 if (len == rest) 222 cmd |= RISC_EOL | RISC_IRQ; 223 *risc++ = cpu_to_le32(cmd); 224 *risc++ = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, offset)); 225 offset += len; 226 rest -= len; 227 } while (rest > 0); 228 } 229 *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO); 230 *risc++ = cpu_to_le32(0); 231 *risc++ = cpu_to_le32(RISC_JUMP); 232 *risc++ = cpu_to_le32(chip->dma_risc.addr); 233 chip->line_bytes = period_bytes; 234 chip->lines = periods; 235 return 0; 236 } 237 238 static void snd_bt87x_free_risc(bt87x_t *chip) 239 { 240 if (chip->dma_risc.area) { 241 snd_dma_free_pages(&chip->dma_risc); 242 chip->dma_risc.area = NULL; 243 } 244 } 245 246 static void snd_bt87x_pci_error(bt87x_t *chip, unsigned int status) 247 { 248 u16 pci_status; 249 250 pci_read_config_word(chip->pci, PCI_STATUS, &pci_status); 251 pci_status &= PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT | 252 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT | 253 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY; 254 pci_write_config_word(chip->pci, PCI_STATUS, pci_status); 255 if (pci_status != PCI_STATUS_DETECTED_PARITY) 256 snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n", 257 status & ERROR_INTERRUPTS, pci_status); 258 else { 259 snd_printk(KERN_ERR "Aieee - PCI parity error detected!\n"); 260 /* error 'handling' similar to aic7xxx_pci.c: */ 261 chip->pci_parity_errors++; 262 if (chip->pci_parity_errors > 20) { 263 snd_printk(KERN_ERR "Too many PCI parity errors observed.\n"); 264 snd_printk(KERN_ERR "Some device on this bus is generating bad parity.\n"); 265 snd_printk(KERN_ERR "This is an error *observed by*, not *generated by*, this card.\n"); 266 snd_printk(KERN_ERR "PCI parity error checking has been disabled.\n"); 267 chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR); 268 snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask); 269 } 270 } 271 } 272 273 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id, struct pt_regs *regs) 274 { 275 bt87x_t *chip = dev_id; 276 unsigned int status, irq_status; 277 278 status = snd_bt87x_readl(chip, REG_INT_STAT); 279 irq_status = status & chip->interrupt_mask; 280 if (!irq_status) 281 return IRQ_NONE; 282 snd_bt87x_writel(chip, REG_INT_STAT, irq_status); 283 284 if (irq_status & ERROR_INTERRUPTS) { 285 if (irq_status & (INT_FBUS | INT_FTRGT)) 286 snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status); 287 if (irq_status & INT_OCERR) 288 snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status); 289 if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT)) 290 snd_bt87x_pci_error(chip, irq_status); 291 } 292 if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) { 293 int current_block, irq_block; 294 295 /* assume that exactly one line has been recorded */ 296 chip->current_line = (chip->current_line + 1) % chip->lines; 297 /* but check if some interrupts have been skipped */ 298 current_block = chip->current_line * 16 / chip->lines; 299 irq_block = status >> INT_RISCS_SHIFT; 300 if (current_block != irq_block) 301 chip->current_line = (irq_block * chip->lines + 15) / 16; 302 303 snd_pcm_period_elapsed(chip->substream); 304 } 305 return IRQ_HANDLED; 306 } 307 308 static snd_pcm_hardware_t snd_bt87x_digital_hw = { 309 .info = SNDRV_PCM_INFO_MMAP | 310 SNDRV_PCM_INFO_INTERLEAVED | 311 SNDRV_PCM_INFO_BLOCK_TRANSFER | 312 SNDRV_PCM_INFO_MMAP_VALID, 313 .formats = SNDRV_PCM_FMTBIT_S16_LE, 314 .rates = 0, /* set at runtime */ 315 .channels_min = 2, 316 .channels_max = 2, 317 .buffer_bytes_max = 255 * 4092, 318 .period_bytes_min = 32, 319 .period_bytes_max = 4092, 320 .periods_min = 2, 321 .periods_max = 255, 322 }; 323 324 static snd_pcm_hardware_t snd_bt87x_analog_hw = { 325 .info = SNDRV_PCM_INFO_MMAP | 326 SNDRV_PCM_INFO_INTERLEAVED | 327 SNDRV_PCM_INFO_BLOCK_TRANSFER | 328 SNDRV_PCM_INFO_MMAP_VALID, 329 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8, 330 .rates = SNDRV_PCM_RATE_KNOT, 331 .rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX, 332 .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN, 333 .channels_min = 1, 334 .channels_max = 1, 335 .buffer_bytes_max = 255 * 4092, 336 .period_bytes_min = 32, 337 .period_bytes_max = 4092, 338 .periods_min = 2, 339 .periods_max = 255, 340 }; 341 342 static int snd_bt87x_set_digital_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime) 343 { 344 static struct { 345 int rate; 346 unsigned int bit; 347 } ratebits[] = { 348 {8000, SNDRV_PCM_RATE_8000}, 349 {11025, SNDRV_PCM_RATE_11025}, 350 {16000, SNDRV_PCM_RATE_16000}, 351 {22050, SNDRV_PCM_RATE_22050}, 352 {32000, SNDRV_PCM_RATE_32000}, 353 {44100, SNDRV_PCM_RATE_44100}, 354 {48000, SNDRV_PCM_RATE_48000} 355 }; 356 int i; 357 358 chip->reg_control |= CTL_DA_IOM_DA; 359 runtime->hw = snd_bt87x_digital_hw; 360 runtime->hw.rates = SNDRV_PCM_RATE_KNOT; 361 for (i = 0; i < ARRAY_SIZE(ratebits); ++i) 362 if (chip->dig_rate == ratebits[i].rate) { 363 runtime->hw.rates = ratebits[i].bit; 364 break; 365 } 366 runtime->hw.rate_min = chip->dig_rate; 367 runtime->hw.rate_max = chip->dig_rate; 368 return 0; 369 } 370 371 static int snd_bt87x_set_analog_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime) 372 { 373 static ratnum_t analog_clock = { 374 .num = ANALOG_CLOCK, 375 .den_min = CLOCK_DIV_MIN, 376 .den_max = CLOCK_DIV_MAX, 377 .den_step = 1 378 }; 379 static snd_pcm_hw_constraint_ratnums_t constraint_rates = { 380 .nrats = 1, 381 .rats = &analog_clock 382 }; 383 384 chip->reg_control &= ~CTL_DA_IOM_DA; 385 runtime->hw = snd_bt87x_analog_hw; 386 return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 387 &constraint_rates); 388 } 389 390 static int snd_bt87x_pcm_open(snd_pcm_substream_t *substream) 391 { 392 bt87x_t *chip = snd_pcm_substream_chip(substream); 393 snd_pcm_runtime_t *runtime = substream->runtime; 394 int err; 395 396 if (test_and_set_bit(0, &chip->opened)) 397 return -EBUSY; 398 399 if (substream->pcm->device == DEVICE_DIGITAL) 400 err = snd_bt87x_set_digital_hw(chip, runtime); 401 else 402 err = snd_bt87x_set_analog_hw(chip, runtime); 403 if (err < 0) 404 goto _error; 405 406 err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); 407 if (err < 0) 408 goto _error; 409 410 chip->substream = substream; 411 return 0; 412 413 _error: 414 clear_bit(0, &chip->opened); 415 smp_mb__after_clear_bit(); 416 return err; 417 } 418 419 static int snd_bt87x_close(snd_pcm_substream_t *substream) 420 { 421 bt87x_t *chip = snd_pcm_substream_chip(substream); 422 423 chip->substream = NULL; 424 clear_bit(0, &chip->opened); 425 smp_mb__after_clear_bit(); 426 return 0; 427 } 428 429 static int snd_bt87x_hw_params(snd_pcm_substream_t *substream, 430 snd_pcm_hw_params_t *hw_params) 431 { 432 bt87x_t *chip = snd_pcm_substream_chip(substream); 433 int err; 434 435 err = snd_pcm_lib_malloc_pages(substream, 436 params_buffer_bytes(hw_params)); 437 if (err < 0) 438 return err; 439 return snd_bt87x_create_risc(chip, substream, 440 params_periods(hw_params), 441 params_period_bytes(hw_params)); 442 } 443 444 static int snd_bt87x_hw_free(snd_pcm_substream_t *substream) 445 { 446 bt87x_t *chip = snd_pcm_substream_chip(substream); 447 448 snd_bt87x_free_risc(chip); 449 snd_pcm_lib_free_pages(substream); 450 return 0; 451 } 452 453 static int snd_bt87x_prepare(snd_pcm_substream_t *substream) 454 { 455 bt87x_t *chip = snd_pcm_substream_chip(substream); 456 snd_pcm_runtime_t *runtime = substream->runtime; 457 int decimation; 458 459 spin_lock_irq(&chip->reg_lock); 460 chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR); 461 decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate; 462 chip->reg_control |= decimation << CTL_DA_SDR_SHIFT; 463 if (runtime->format == SNDRV_PCM_FORMAT_S8) 464 chip->reg_control |= CTL_DA_SBR; 465 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control); 466 spin_unlock_irq(&chip->reg_lock); 467 return 0; 468 } 469 470 static int snd_bt87x_start(bt87x_t *chip) 471 { 472 spin_lock(&chip->reg_lock); 473 chip->current_line = 0; 474 chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN; 475 snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr); 476 snd_bt87x_writel(chip, REG_PACKET_LEN, 477 chip->line_bytes | (chip->lines << 16)); 478 snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask); 479 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control); 480 spin_unlock(&chip->reg_lock); 481 return 0; 482 } 483 484 static int snd_bt87x_stop(bt87x_t *chip) 485 { 486 spin_lock(&chip->reg_lock); 487 chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN); 488 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control); 489 snd_bt87x_writel(chip, REG_INT_MASK, 0); 490 snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS); 491 spin_unlock(&chip->reg_lock); 492 return 0; 493 } 494 495 static int snd_bt87x_trigger(snd_pcm_substream_t *substream, int cmd) 496 { 497 bt87x_t *chip = snd_pcm_substream_chip(substream); 498 499 switch (cmd) { 500 case SNDRV_PCM_TRIGGER_START: 501 return snd_bt87x_start(chip); 502 case SNDRV_PCM_TRIGGER_STOP: 503 return snd_bt87x_stop(chip); 504 default: 505 return -EINVAL; 506 } 507 } 508 509 static snd_pcm_uframes_t snd_bt87x_pointer(snd_pcm_substream_t *substream) 510 { 511 bt87x_t *chip = snd_pcm_substream_chip(substream); 512 snd_pcm_runtime_t *runtime = substream->runtime; 513 514 return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes); 515 } 516 517 static snd_pcm_ops_t snd_bt87x_pcm_ops = { 518 .open = snd_bt87x_pcm_open, 519 .close = snd_bt87x_close, 520 .ioctl = snd_pcm_lib_ioctl, 521 .hw_params = snd_bt87x_hw_params, 522 .hw_free = snd_bt87x_hw_free, 523 .prepare = snd_bt87x_prepare, 524 .trigger = snd_bt87x_trigger, 525 .pointer = snd_bt87x_pointer, 526 .page = snd_pcm_sgbuf_ops_page, 527 }; 528 529 static int snd_bt87x_capture_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info) 530 { 531 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 532 info->count = 1; 533 info->value.integer.min = 0; 534 info->value.integer.max = 15; 535 return 0; 536 } 537 538 static int snd_bt87x_capture_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value) 539 { 540 bt87x_t *chip = snd_kcontrol_chip(kcontrol); 541 542 value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT; 543 return 0; 544 } 545 546 static int snd_bt87x_capture_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value) 547 { 548 bt87x_t *chip = snd_kcontrol_chip(kcontrol); 549 u32 old_control; 550 int changed; 551 552 spin_lock_irq(&chip->reg_lock); 553 old_control = chip->reg_control; 554 chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK) 555 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT); 556 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control); 557 changed = old_control != chip->reg_control; 558 spin_unlock_irq(&chip->reg_lock); 559 return changed; 560 } 561 562 static snd_kcontrol_new_t snd_bt87x_capture_volume = { 563 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 564 .name = "Capture Volume", 565 .info = snd_bt87x_capture_volume_info, 566 .get = snd_bt87x_capture_volume_get, 567 .put = snd_bt87x_capture_volume_put, 568 }; 569 570 static int snd_bt87x_capture_boost_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info) 571 { 572 info->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 573 info->count = 1; 574 info->value.integer.min = 0; 575 info->value.integer.max = 1; 576 return 0; 577 } 578 579 static int snd_bt87x_capture_boost_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value) 580 { 581 bt87x_t *chip = snd_kcontrol_chip(kcontrol); 582 583 value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X); 584 return 0; 585 } 586 587 static int snd_bt87x_capture_boost_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value) 588 { 589 bt87x_t *chip = snd_kcontrol_chip(kcontrol); 590 u32 old_control; 591 int changed; 592 593 spin_lock_irq(&chip->reg_lock); 594 old_control = chip->reg_control; 595 chip->reg_control = (chip->reg_control & ~CTL_A_G2X) 596 | (value->value.integer.value[0] ? CTL_A_G2X : 0); 597 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control); 598 changed = chip->reg_control != old_control; 599 spin_unlock_irq(&chip->reg_lock); 600 return changed; 601 } 602 603 static snd_kcontrol_new_t snd_bt87x_capture_boost = { 604 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 605 .name = "Capture Boost", 606 .info = snd_bt87x_capture_boost_info, 607 .get = snd_bt87x_capture_boost_get, 608 .put = snd_bt87x_capture_boost_put, 609 }; 610 611 static int snd_bt87x_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info) 612 { 613 static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"}; 614 615 info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 616 info->count = 1; 617 info->value.enumerated.items = 3; 618 if (info->value.enumerated.item > 2) 619 info->value.enumerated.item = 2; 620 strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]); 621 return 0; 622 } 623 624 static int snd_bt87x_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value) 625 { 626 bt87x_t *chip = snd_kcontrol_chip(kcontrol); 627 628 value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT; 629 return 0; 630 } 631 632 static int snd_bt87x_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value) 633 { 634 bt87x_t *chip = snd_kcontrol_chip(kcontrol); 635 u32 old_control; 636 int changed; 637 638 spin_lock_irq(&chip->reg_lock); 639 old_control = chip->reg_control; 640 chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK) 641 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT); 642 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control); 643 changed = chip->reg_control != old_control; 644 spin_unlock_irq(&chip->reg_lock); 645 return changed; 646 } 647 648 static snd_kcontrol_new_t snd_bt87x_capture_source = { 649 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 650 .name = "Capture Source", 651 .info = snd_bt87x_capture_source_info, 652 .get = snd_bt87x_capture_source_get, 653 .put = snd_bt87x_capture_source_put, 654 }; 655 656 static int snd_bt87x_free(bt87x_t *chip) 657 { 658 if (chip->mmio) { 659 snd_bt87x_stop(chip); 660 if (chip->irq >= 0) 661 synchronize_irq(chip->irq); 662 663 iounmap(chip->mmio); 664 } 665 if (chip->irq >= 0) 666 free_irq(chip->irq, chip); 667 pci_release_regions(chip->pci); 668 pci_disable_device(chip->pci); 669 kfree(chip); 670 return 0; 671 } 672 673 static int snd_bt87x_dev_free(snd_device_t *device) 674 { 675 bt87x_t *chip = device->device_data; 676 return snd_bt87x_free(chip); 677 } 678 679 static int __devinit snd_bt87x_pcm(bt87x_t *chip, int device, char *name) 680 { 681 int err; 682 snd_pcm_t *pcm; 683 684 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm); 685 if (err < 0) 686 return err; 687 pcm->private_data = chip; 688 strcpy(pcm->name, name); 689 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops); 690 return snd_pcm_lib_preallocate_pages_for_all(pcm, 691 SNDRV_DMA_TYPE_DEV_SG, 692 snd_dma_pci_data(chip->pci), 693 128 * 1024, 694 (255 * 4092 + 1023) & ~1023); 695 } 696 697 static int __devinit snd_bt87x_create(snd_card_t *card, 698 struct pci_dev *pci, 699 bt87x_t **rchip) 700 { 701 bt87x_t *chip; 702 int err; 703 static snd_device_ops_t ops = { 704 .dev_free = snd_bt87x_dev_free 705 }; 706 707 *rchip = NULL; 708 709 err = pci_enable_device(pci); 710 if (err < 0) 711 return err; 712 713 chip = kzalloc(sizeof(*chip), GFP_KERNEL); 714 if (!chip) { 715 pci_disable_device(pci); 716 return -ENOMEM; 717 } 718 chip->card = card; 719 chip->pci = pci; 720 chip->irq = -1; 721 spin_lock_init(&chip->reg_lock); 722 723 if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) { 724 kfree(chip); 725 pci_disable_device(pci); 726 return err; 727 } 728 chip->mmio = ioremap_nocache(pci_resource_start(pci, 0), 729 pci_resource_len(pci, 0)); 730 if (!chip->mmio) { 731 snd_bt87x_free(chip); 732 snd_printk(KERN_ERR "cannot remap io memory\n"); 733 return -ENOMEM; 734 } 735 736 chip->reg_control = CTL_DA_ES2 | CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT); 737 chip->interrupt_mask = MY_INTERRUPTS; 738 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control); 739 snd_bt87x_writel(chip, REG_INT_MASK, 0); 740 snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS); 741 742 if (request_irq(pci->irq, snd_bt87x_interrupt, SA_INTERRUPT | SA_SHIRQ, 743 "Bt87x audio", chip)) { 744 snd_bt87x_free(chip); 745 snd_printk(KERN_ERR "cannot grab irq\n"); 746 return -EBUSY; 747 } 748 chip->irq = pci->irq; 749 pci_set_master(pci); 750 synchronize_irq(chip->irq); 751 752 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); 753 if (err < 0) { 754 snd_bt87x_free(chip); 755 return err; 756 } 757 snd_card_set_dev(card, &pci->dev); 758 *rchip = chip; 759 return 0; 760 } 761 762 #define BT_DEVICE(chip, subvend, subdev, rate) \ 763 { .vendor = PCI_VENDOR_ID_BROOKTREE, \ 764 .device = chip, \ 765 .subvendor = subvend, .subdevice = subdev, \ 766 .driver_data = rate } 767 768 /* driver_data is the default digital_rate value for that device */ 769 static struct pci_device_id snd_bt87x_ids[] = { 770 /* Hauppauge WinTV series */ 771 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, 32000), 772 /* Hauppauge WinTV series */ 773 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, 32000), 774 /* Viewcast Osprey 200 */ 775 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, 44100), 776 { } 777 }; 778 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids); 779 780 /* cards known not to have audio 781 * (DVB cards use the audio function to transfer MPEG data) */ 782 static struct { 783 unsigned short subvendor, subdevice; 784 } blacklist[] __devinitdata = { 785 {0x0071, 0x0101}, /* Nebula Electronics DigiTV */ 786 {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */ 787 {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */ 788 {0x1461, 0x0771}, /* AVermedia DVB-T 771 */ 789 {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */ 790 {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */ 791 {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */ 792 }; 793 794 static struct pci_driver driver; 795 796 /* return the rate of the card, or a negative value if it's blacklisted */ 797 static int __devinit snd_bt87x_detect_card(struct pci_dev *pci) 798 { 799 int i; 800 const struct pci_device_id *supported; 801 802 supported = pci_match_device(&driver, pci); 803 if (supported) 804 return supported->driver_data; 805 806 for (i = 0; i < ARRAY_SIZE(blacklist); ++i) 807 if (blacklist[i].subvendor == pci->subsystem_vendor && 808 blacklist[i].subdevice == pci->subsystem_device) { 809 snd_printdd(KERN_INFO "card %#04x:%#04x has no audio\n", 810 pci->subsystem_vendor, pci->subsystem_device); 811 return -EBUSY; 812 } 813 814 snd_printk(KERN_INFO "unknown card %#04x:%#04x, using default rate 32000\n", 815 pci->subsystem_vendor, pci->subsystem_device); 816 snd_printk(KERN_DEBUG "please mail id, board name, and, " 817 "if it works, the correct digital_rate option to " 818 "<alsa-devel@lists.sf.net>\n"); 819 return 32000; /* default rate */ 820 } 821 822 static int __devinit snd_bt87x_probe(struct pci_dev *pci, 823 const struct pci_device_id *pci_id) 824 { 825 static int dev; 826 snd_card_t *card; 827 bt87x_t *chip; 828 int err, rate; 829 830 rate = pci_id->driver_data; 831 if (! rate) 832 if ((rate = snd_bt87x_detect_card(pci)) <= 0) 833 return -ENODEV; 834 835 if (dev >= SNDRV_CARDS) 836 return -ENODEV; 837 if (!enable[dev]) { 838 ++dev; 839 return -ENOENT; 840 } 841 842 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0); 843 if (!card) 844 return -ENOMEM; 845 846 err = snd_bt87x_create(card, pci, &chip); 847 if (err < 0) 848 goto _error; 849 850 if (digital_rate[dev] > 0) 851 chip->dig_rate = digital_rate[dev]; 852 else 853 chip->dig_rate = rate; 854 855 err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital"); 856 if (err < 0) 857 goto _error; 858 err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog"); 859 if (err < 0) 860 goto _error; 861 862 err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_volume, chip)); 863 if (err < 0) 864 goto _error; 865 err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_boost, chip)); 866 if (err < 0) 867 goto _error; 868 err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_source, chip)); 869 if (err < 0) 870 goto _error; 871 872 strcpy(card->driver, "Bt87x"); 873 sprintf(card->shortname, "Brooktree Bt%x", pci->device); 874 sprintf(card->longname, "%s at %#lx, irq %i", 875 card->shortname, pci_resource_start(pci, 0), chip->irq); 876 strcpy(card->mixername, "Bt87x"); 877 878 err = snd_card_register(card); 879 if (err < 0) 880 goto _error; 881 882 pci_set_drvdata(pci, card); 883 ++dev; 884 return 0; 885 886 _error: 887 snd_card_free(card); 888 return err; 889 } 890 891 static void __devexit snd_bt87x_remove(struct pci_dev *pci) 892 { 893 snd_card_free(pci_get_drvdata(pci)); 894 pci_set_drvdata(pci, NULL); 895 } 896 897 /* default entries for all Bt87x cards - it's not exported */ 898 /* driver_data is set to 0 to call detection */ 899 static struct pci_device_id snd_bt87x_default_ids[] = { 900 BT_DEVICE(878, PCI_ANY_ID, PCI_ANY_ID, 0), 901 BT_DEVICE(879, PCI_ANY_ID, PCI_ANY_ID, 0), 902 { } 903 }; 904 905 static struct pci_driver driver = { 906 .name = "Bt87x", 907 .owner = THIS_MODULE, 908 .id_table = snd_bt87x_ids, 909 .probe = snd_bt87x_probe, 910 .remove = __devexit_p(snd_bt87x_remove), 911 }; 912 913 static int __init alsa_card_bt87x_init(void) 914 { 915 if (load_all) 916 driver.id_table = snd_bt87x_default_ids; 917 return pci_register_driver(&driver); 918 } 919 920 static void __exit alsa_card_bt87x_exit(void) 921 { 922 pci_unregister_driver(&driver); 923 } 924 925 module_init(alsa_card_bt87x_init) 926 module_exit(alsa_card_bt87x_exit) 927