1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * bt87x.c - Brooktree Bt878/Bt879 driver for ALSA 4 * 5 * Copyright (c) Clemens Ladisch <clemens@ladisch.de> 6 * 7 * based on btaudio.c by Gerd Knorr <kraxel@bytesex.org> 8 */ 9 10 #include <linux/init.h> 11 #include <linux/interrupt.h> 12 #include <linux/pci.h> 13 #include <linux/slab.h> 14 #include <linux/module.h> 15 #include <linux/bitops.h> 16 #include <linux/io.h> 17 #include <sound/core.h> 18 #include <sound/pcm.h> 19 #include <sound/pcm_params.h> 20 #include <sound/control.h> 21 #include <sound/initval.h> 22 23 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); 24 MODULE_DESCRIPTION("Brooktree Bt87x audio driver"); 25 MODULE_LICENSE("GPL"); 26 27 static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */ 28 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ 29 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */ 30 static int digital_rate[SNDRV_CARDS]; /* digital input rate */ 31 static bool load_all; /* allow to load cards not the allowlist */ 32 33 module_param_array(index, int, NULL, 0444); 34 MODULE_PARM_DESC(index, "Index value for Bt87x soundcard"); 35 module_param_array(id, charp, NULL, 0444); 36 MODULE_PARM_DESC(id, "ID string for Bt87x soundcard"); 37 module_param_array(enable, bool, NULL, 0444); 38 MODULE_PARM_DESC(enable, "Enable Bt87x soundcard"); 39 module_param_array(digital_rate, int, NULL, 0444); 40 MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard"); 41 module_param(load_all, bool, 0444); 42 MODULE_PARM_DESC(load_all, "Allow to load cards not on the allowlist"); 43 44 45 /* register offsets */ 46 #define REG_INT_STAT 0x100 /* interrupt status */ 47 #define REG_INT_MASK 0x104 /* interrupt mask */ 48 #define REG_GPIO_DMA_CTL 0x10c /* audio control */ 49 #define REG_PACKET_LEN 0x110 /* audio packet lengths */ 50 #define REG_RISC_STRT_ADD 0x114 /* RISC program start address */ 51 #define REG_RISC_COUNT 0x120 /* RISC program counter */ 52 53 /* interrupt bits */ 54 #define INT_OFLOW (1 << 3) /* audio A/D overflow */ 55 #define INT_RISCI (1 << 11) /* RISC instruction IRQ bit set */ 56 #define INT_FBUS (1 << 12) /* FIFO overrun due to bus access latency */ 57 #define INT_FTRGT (1 << 13) /* FIFO overrun due to target latency */ 58 #define INT_FDSR (1 << 14) /* FIFO data stream resynchronization */ 59 #define INT_PPERR (1 << 15) /* PCI parity error */ 60 #define INT_RIPERR (1 << 16) /* RISC instruction parity error */ 61 #define INT_PABORT (1 << 17) /* PCI master or target abort */ 62 #define INT_OCERR (1 << 18) /* invalid opcode */ 63 #define INT_SCERR (1 << 19) /* sync counter overflow */ 64 #define INT_RISC_EN (1 << 27) /* DMA controller running */ 65 #define INT_RISCS_SHIFT 28 /* RISC status bits */ 66 67 /* audio control bits */ 68 #define CTL_FIFO_ENABLE (1 << 0) /* enable audio data FIFO */ 69 #define CTL_RISC_ENABLE (1 << 1) /* enable audio DMA controller */ 70 #define CTL_PKTP_4 (0 << 2) /* packet mode FIFO trigger point - 4 DWORDs */ 71 #define CTL_PKTP_8 (1 << 2) /* 8 DWORDs */ 72 #define CTL_PKTP_16 (2 << 2) /* 16 DWORDs */ 73 #define CTL_ACAP_EN (1 << 4) /* enable audio capture */ 74 #define CTL_DA_APP (1 << 5) /* GPIO input */ 75 #define CTL_DA_IOM_AFE (0 << 6) /* audio A/D input */ 76 #define CTL_DA_IOM_DA (1 << 6) /* digital audio input */ 77 #define CTL_DA_SDR_SHIFT 8 /* DDF first stage decimation rate */ 78 #define CTL_DA_SDR_MASK (0xf<< 8) 79 #define CTL_DA_LMT (1 << 12) /* limit audio data values */ 80 #define CTL_DA_ES2 (1 << 13) /* enable DDF stage 2 */ 81 #define CTL_DA_SBR (1 << 14) /* samples rounded to 8 bits */ 82 #define CTL_DA_DPM (1 << 15) /* data packet mode */ 83 #define CTL_DA_LRD_SHIFT 16 /* ALRCK delay */ 84 #define CTL_DA_MLB (1 << 21) /* MSB/LSB format */ 85 #define CTL_DA_LRI (1 << 22) /* left/right indication */ 86 #define CTL_DA_SCE (1 << 23) /* sample clock edge */ 87 #define CTL_A_SEL_STV (0 << 24) /* TV tuner audio input */ 88 #define CTL_A_SEL_SFM (1 << 24) /* FM audio input */ 89 #define CTL_A_SEL_SML (2 << 24) /* mic/line audio input */ 90 #define CTL_A_SEL_SMXC (3 << 24) /* MUX bypass */ 91 #define CTL_A_SEL_SHIFT 24 92 #define CTL_A_SEL_MASK (3 << 24) 93 #define CTL_A_PWRDN (1 << 26) /* analog audio power-down */ 94 #define CTL_A_G2X (1 << 27) /* audio gain boost */ 95 #define CTL_A_GAIN_SHIFT 28 /* audio input gain */ 96 #define CTL_A_GAIN_MASK (0xf<<28) 97 98 /* RISC instruction opcodes */ 99 #define RISC_WRITE (0x1 << 28) /* write FIFO data to memory at address */ 100 #define RISC_WRITEC (0x5 << 28) /* write FIFO data to memory at current address */ 101 #define RISC_SKIP (0x2 << 28) /* skip FIFO data */ 102 #define RISC_JUMP (0x7 << 28) /* jump to address */ 103 #define RISC_SYNC (0x8 << 28) /* synchronize with FIFO */ 104 105 /* RISC instruction bits */ 106 #define RISC_BYTES_ENABLE (0xf << 12) /* byte enable bits */ 107 #define RISC_RESYNC ( 1 << 15) /* disable FDSR errors */ 108 #define RISC_SET_STATUS_SHIFT 16 /* set status bits */ 109 #define RISC_RESET_STATUS_SHIFT 20 /* clear status bits */ 110 #define RISC_IRQ ( 1 << 24) /* interrupt */ 111 #define RISC_EOL ( 1 << 26) /* end of line */ 112 #define RISC_SOL ( 1 << 27) /* start of line */ 113 114 /* SYNC status bits values */ 115 #define RISC_SYNC_FM1 0x6 116 #define RISC_SYNC_VRO 0xc 117 118 #define ANALOG_CLOCK 1792000 119 #ifdef CONFIG_SND_BT87X_OVERCLOCK 120 #define CLOCK_DIV_MIN 1 121 #else 122 #define CLOCK_DIV_MIN 4 123 #endif 124 #define CLOCK_DIV_MAX 15 125 126 #define ERROR_INTERRUPTS (INT_FBUS | INT_FTRGT | INT_PPERR | \ 127 INT_RIPERR | INT_PABORT | INT_OCERR) 128 #define MY_INTERRUPTS (INT_RISCI | ERROR_INTERRUPTS) 129 130 /* SYNC, one WRITE per line, one extra WRITE per page boundary, SYNC, JUMP */ 131 #define MAX_RISC_SIZE ((1 + 255 + (PAGE_ALIGN(255 * 4092) / PAGE_SIZE - 1) + 1 + 1) * 8) 132 133 /* Cards with configuration information */ 134 enum snd_bt87x_boardid { 135 SND_BT87X_BOARD_UNKNOWN, 136 SND_BT87X_BOARD_GENERIC, /* both an & dig interfaces, 32kHz */ 137 SND_BT87X_BOARD_ANALOG, /* board with no external A/D */ 138 SND_BT87X_BOARD_OSPREY2x0, 139 SND_BT87X_BOARD_OSPREY440, 140 SND_BT87X_BOARD_AVPHONE98, 141 }; 142 143 /* Card configuration */ 144 struct snd_bt87x_board { 145 int dig_rate; /* Digital input sampling rate */ 146 u32 digital_fmt; /* Register settings for digital input */ 147 unsigned no_analog:1; /* No analog input */ 148 unsigned no_digital:1; /* No digital input */ 149 }; 150 151 static const struct snd_bt87x_board snd_bt87x_boards[] = { 152 [SND_BT87X_BOARD_UNKNOWN] = { 153 .dig_rate = 32000, /* just a guess */ 154 }, 155 [SND_BT87X_BOARD_GENERIC] = { 156 .dig_rate = 32000, 157 }, 158 [SND_BT87X_BOARD_ANALOG] = { 159 .no_digital = 1, 160 }, 161 [SND_BT87X_BOARD_OSPREY2x0] = { 162 .dig_rate = 44100, 163 .digital_fmt = CTL_DA_LRI | (1 << CTL_DA_LRD_SHIFT), 164 }, 165 [SND_BT87X_BOARD_OSPREY440] = { 166 .dig_rate = 32000, 167 .digital_fmt = CTL_DA_LRI | (1 << CTL_DA_LRD_SHIFT), 168 .no_analog = 1, 169 }, 170 [SND_BT87X_BOARD_AVPHONE98] = { 171 .dig_rate = 48000, 172 }, 173 }; 174 175 struct snd_bt87x { 176 struct snd_card *card; 177 struct pci_dev *pci; 178 struct snd_bt87x_board board; 179 180 void __iomem *mmio; 181 int irq; 182 183 spinlock_t reg_lock; 184 unsigned long opened; 185 struct snd_pcm_substream *substream; 186 187 struct snd_dma_buffer dma_risc; 188 unsigned int line_bytes; 189 unsigned int lines; 190 191 u32 reg_control; 192 u32 interrupt_mask; 193 194 int current_line; 195 196 int pci_parity_errors; 197 }; 198 199 enum { DEVICE_DIGITAL, DEVICE_ANALOG }; 200 snd_bt87x_readl(struct snd_bt87x * chip,u32 reg)201 static inline u32 snd_bt87x_readl(struct snd_bt87x *chip, u32 reg) 202 { 203 return readl(chip->mmio + reg); 204 } 205 snd_bt87x_writel(struct snd_bt87x * chip,u32 reg,u32 value)206 static inline void snd_bt87x_writel(struct snd_bt87x *chip, u32 reg, u32 value) 207 { 208 writel(value, chip->mmio + reg); 209 } 210 snd_bt87x_create_risc(struct snd_bt87x * chip,struct snd_pcm_substream * substream,unsigned int periods,unsigned int period_bytes)211 static int snd_bt87x_create_risc(struct snd_bt87x *chip, struct snd_pcm_substream *substream, 212 unsigned int periods, unsigned int period_bytes) 213 { 214 unsigned int i, offset; 215 __le32 *risc; 216 217 if (chip->dma_risc.area == NULL) { 218 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &chip->pci->dev, 219 PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0) 220 return -ENOMEM; 221 } 222 risc = (__le32 *)chip->dma_risc.area; 223 offset = 0; 224 *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1); 225 *risc++ = cpu_to_le32(0); 226 for (i = 0; i < periods; ++i) { 227 u32 rest; 228 229 rest = period_bytes; 230 do { 231 u32 cmd, len; 232 unsigned int addr; 233 234 len = PAGE_SIZE - (offset % PAGE_SIZE); 235 if (len > rest) 236 len = rest; 237 cmd = RISC_WRITE | len; 238 if (rest == period_bytes) { 239 u32 block = i * 16 / periods; 240 cmd |= RISC_SOL; 241 cmd |= block << RISC_SET_STATUS_SHIFT; 242 cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT; 243 } 244 if (len == rest) 245 cmd |= RISC_EOL | RISC_IRQ; 246 *risc++ = cpu_to_le32(cmd); 247 addr = snd_pcm_sgbuf_get_addr(substream, offset); 248 *risc++ = cpu_to_le32(addr); 249 offset += len; 250 rest -= len; 251 } while (rest > 0); 252 } 253 *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO); 254 *risc++ = cpu_to_le32(0); 255 *risc++ = cpu_to_le32(RISC_JUMP); 256 *risc++ = cpu_to_le32(chip->dma_risc.addr); 257 chip->line_bytes = period_bytes; 258 chip->lines = periods; 259 return 0; 260 } 261 snd_bt87x_free_risc(struct snd_bt87x * chip)262 static void snd_bt87x_free_risc(struct snd_bt87x *chip) 263 { 264 if (chip->dma_risc.area) { 265 snd_dma_free_pages(&chip->dma_risc); 266 chip->dma_risc.area = NULL; 267 } 268 } 269 snd_bt87x_pci_error(struct snd_bt87x * chip,unsigned int status)270 static void snd_bt87x_pci_error(struct snd_bt87x *chip, unsigned int status) 271 { 272 int pci_status = pci_status_get_and_clear_errors(chip->pci); 273 274 if (pci_status != PCI_STATUS_DETECTED_PARITY) 275 dev_err(chip->card->dev, 276 "Aieee - PCI error! status %#08x, PCI status %#04x\n", 277 status & ERROR_INTERRUPTS, pci_status); 278 else { 279 dev_err(chip->card->dev, 280 "Aieee - PCI parity error detected!\n"); 281 /* error 'handling' similar to aic7xxx_pci.c: */ 282 chip->pci_parity_errors++; 283 if (chip->pci_parity_errors > 20) { 284 dev_err(chip->card->dev, 285 "Too many PCI parity errors observed.\n"); 286 dev_err(chip->card->dev, 287 "Some device on this bus is generating bad parity.\n"); 288 dev_err(chip->card->dev, 289 "This is an error *observed by*, not *generated by*, this card.\n"); 290 dev_err(chip->card->dev, 291 "PCI parity error checking has been disabled.\n"); 292 chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR); 293 snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask); 294 } 295 } 296 } 297 snd_bt87x_interrupt(int irq,void * dev_id)298 static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id) 299 { 300 struct snd_bt87x *chip = dev_id; 301 unsigned int status, irq_status; 302 303 status = snd_bt87x_readl(chip, REG_INT_STAT); 304 irq_status = status & chip->interrupt_mask; 305 if (!irq_status) 306 return IRQ_NONE; 307 snd_bt87x_writel(chip, REG_INT_STAT, irq_status); 308 309 if (irq_status & ERROR_INTERRUPTS) { 310 if (irq_status & (INT_FBUS | INT_FTRGT)) 311 dev_warn(chip->card->dev, 312 "FIFO overrun, status %#08x\n", status); 313 if (irq_status & INT_OCERR) 314 dev_err(chip->card->dev, 315 "internal RISC error, status %#08x\n", status); 316 if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT)) 317 snd_bt87x_pci_error(chip, irq_status); 318 } 319 if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) { 320 int current_block, irq_block; 321 322 /* assume that exactly one line has been recorded */ 323 chip->current_line = (chip->current_line + 1) % chip->lines; 324 /* but check if some interrupts have been skipped */ 325 current_block = chip->current_line * 16 / chip->lines; 326 irq_block = status >> INT_RISCS_SHIFT; 327 if (current_block != irq_block) 328 chip->current_line = DIV_ROUND_UP(irq_block * chip->lines, 329 16); 330 331 snd_pcm_period_elapsed(chip->substream); 332 } 333 return IRQ_HANDLED; 334 } 335 336 static const struct snd_pcm_hardware snd_bt87x_digital_hw = { 337 .info = SNDRV_PCM_INFO_MMAP | 338 SNDRV_PCM_INFO_INTERLEAVED | 339 SNDRV_PCM_INFO_BLOCK_TRANSFER | 340 SNDRV_PCM_INFO_MMAP_VALID | 341 SNDRV_PCM_INFO_BATCH, 342 .formats = SNDRV_PCM_FMTBIT_S16_LE, 343 .rates = 0, /* set at runtime */ 344 .channels_min = 2, 345 .channels_max = 2, 346 .buffer_bytes_max = 255 * 4092, 347 .period_bytes_min = 32, 348 .period_bytes_max = 4092, 349 .periods_min = 2, 350 .periods_max = 255, 351 }; 352 353 static const struct snd_pcm_hardware snd_bt87x_analog_hw = { 354 .info = SNDRV_PCM_INFO_MMAP | 355 SNDRV_PCM_INFO_INTERLEAVED | 356 SNDRV_PCM_INFO_BLOCK_TRANSFER | 357 SNDRV_PCM_INFO_MMAP_VALID | 358 SNDRV_PCM_INFO_BATCH, 359 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8, 360 .rates = SNDRV_PCM_RATE_KNOT, 361 .rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX, 362 .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN, 363 .channels_min = 1, 364 .channels_max = 1, 365 .buffer_bytes_max = 255 * 4092, 366 .period_bytes_min = 32, 367 .period_bytes_max = 4092, 368 .periods_min = 2, 369 .periods_max = 255, 370 }; 371 snd_bt87x_set_digital_hw(struct snd_bt87x * chip,struct snd_pcm_runtime * runtime)372 static int snd_bt87x_set_digital_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime) 373 { 374 chip->reg_control |= CTL_DA_IOM_DA | CTL_A_PWRDN; 375 runtime->hw = snd_bt87x_digital_hw; 376 runtime->hw.rates = snd_pcm_rate_to_rate_bit(chip->board.dig_rate); 377 runtime->hw.rate_min = chip->board.dig_rate; 378 runtime->hw.rate_max = chip->board.dig_rate; 379 return 0; 380 } 381 snd_bt87x_set_analog_hw(struct snd_bt87x * chip,struct snd_pcm_runtime * runtime)382 static int snd_bt87x_set_analog_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime) 383 { 384 static const struct snd_ratnum analog_clock = { 385 .num = ANALOG_CLOCK, 386 .den_min = CLOCK_DIV_MIN, 387 .den_max = CLOCK_DIV_MAX, 388 .den_step = 1 389 }; 390 static const struct snd_pcm_hw_constraint_ratnums constraint_rates = { 391 .nrats = 1, 392 .rats = &analog_clock 393 }; 394 395 chip->reg_control &= ~(CTL_DA_IOM_DA | CTL_A_PWRDN); 396 runtime->hw = snd_bt87x_analog_hw; 397 return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 398 &constraint_rates); 399 } 400 snd_bt87x_pcm_open(struct snd_pcm_substream * substream)401 static int snd_bt87x_pcm_open(struct snd_pcm_substream *substream) 402 { 403 struct snd_bt87x *chip = snd_pcm_substream_chip(substream); 404 struct snd_pcm_runtime *runtime = substream->runtime; 405 int err; 406 407 if (test_and_set_bit(0, &chip->opened)) 408 return -EBUSY; 409 410 if (substream->pcm->device == DEVICE_DIGITAL) 411 err = snd_bt87x_set_digital_hw(chip, runtime); 412 else 413 err = snd_bt87x_set_analog_hw(chip, runtime); 414 if (err < 0) 415 goto _error; 416 417 err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); 418 if (err < 0) 419 goto _error; 420 421 chip->substream = substream; 422 return 0; 423 424 _error: 425 clear_bit(0, &chip->opened); 426 smp_mb__after_atomic(); 427 return err; 428 } 429 snd_bt87x_close(struct snd_pcm_substream * substream)430 static int snd_bt87x_close(struct snd_pcm_substream *substream) 431 { 432 struct snd_bt87x *chip = snd_pcm_substream_chip(substream); 433 434 spin_lock_irq(&chip->reg_lock); 435 chip->reg_control |= CTL_A_PWRDN; 436 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control); 437 spin_unlock_irq(&chip->reg_lock); 438 439 chip->substream = NULL; 440 clear_bit(0, &chip->opened); 441 smp_mb__after_atomic(); 442 return 0; 443 } 444 snd_bt87x_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)445 static int snd_bt87x_hw_params(struct snd_pcm_substream *substream, 446 struct snd_pcm_hw_params *hw_params) 447 { 448 struct snd_bt87x *chip = snd_pcm_substream_chip(substream); 449 450 return snd_bt87x_create_risc(chip, substream, 451 params_periods(hw_params), 452 params_period_bytes(hw_params)); 453 } 454 snd_bt87x_hw_free(struct snd_pcm_substream * substream)455 static int snd_bt87x_hw_free(struct snd_pcm_substream *substream) 456 { 457 struct snd_bt87x *chip = snd_pcm_substream_chip(substream); 458 459 snd_bt87x_free_risc(chip); 460 return 0; 461 } 462 snd_bt87x_prepare(struct snd_pcm_substream * substream)463 static int snd_bt87x_prepare(struct snd_pcm_substream *substream) 464 { 465 struct snd_bt87x *chip = snd_pcm_substream_chip(substream); 466 struct snd_pcm_runtime *runtime = substream->runtime; 467 int decimation; 468 469 spin_lock_irq(&chip->reg_lock); 470 chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR); 471 decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate; 472 chip->reg_control |= decimation << CTL_DA_SDR_SHIFT; 473 if (runtime->format == SNDRV_PCM_FORMAT_S8) 474 chip->reg_control |= CTL_DA_SBR; 475 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control); 476 spin_unlock_irq(&chip->reg_lock); 477 return 0; 478 } 479 snd_bt87x_start(struct snd_bt87x * chip)480 static int snd_bt87x_start(struct snd_bt87x *chip) 481 { 482 spin_lock(&chip->reg_lock); 483 chip->current_line = 0; 484 chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN; 485 snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr); 486 snd_bt87x_writel(chip, REG_PACKET_LEN, 487 chip->line_bytes | (chip->lines << 16)); 488 snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask); 489 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control); 490 spin_unlock(&chip->reg_lock); 491 return 0; 492 } 493 snd_bt87x_stop(struct snd_bt87x * chip)494 static int snd_bt87x_stop(struct snd_bt87x *chip) 495 { 496 spin_lock(&chip->reg_lock); 497 chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN); 498 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control); 499 snd_bt87x_writel(chip, REG_INT_MASK, 0); 500 snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS); 501 spin_unlock(&chip->reg_lock); 502 return 0; 503 } 504 snd_bt87x_trigger(struct snd_pcm_substream * substream,int cmd)505 static int snd_bt87x_trigger(struct snd_pcm_substream *substream, int cmd) 506 { 507 struct snd_bt87x *chip = snd_pcm_substream_chip(substream); 508 509 switch (cmd) { 510 case SNDRV_PCM_TRIGGER_START: 511 return snd_bt87x_start(chip); 512 case SNDRV_PCM_TRIGGER_STOP: 513 return snd_bt87x_stop(chip); 514 default: 515 return -EINVAL; 516 } 517 } 518 snd_bt87x_pointer(struct snd_pcm_substream * substream)519 static snd_pcm_uframes_t snd_bt87x_pointer(struct snd_pcm_substream *substream) 520 { 521 struct snd_bt87x *chip = snd_pcm_substream_chip(substream); 522 struct snd_pcm_runtime *runtime = substream->runtime; 523 524 return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes); 525 } 526 527 static const struct snd_pcm_ops snd_bt87x_pcm_ops = { 528 .open = snd_bt87x_pcm_open, 529 .close = snd_bt87x_close, 530 .hw_params = snd_bt87x_hw_params, 531 .hw_free = snd_bt87x_hw_free, 532 .prepare = snd_bt87x_prepare, 533 .trigger = snd_bt87x_trigger, 534 .pointer = snd_bt87x_pointer, 535 }; 536 snd_bt87x_capture_volume_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * info)537 static int snd_bt87x_capture_volume_info(struct snd_kcontrol *kcontrol, 538 struct snd_ctl_elem_info *info) 539 { 540 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 541 info->count = 1; 542 info->value.integer.min = 0; 543 info->value.integer.max = 15; 544 return 0; 545 } 546 snd_bt87x_capture_volume_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)547 static int snd_bt87x_capture_volume_get(struct snd_kcontrol *kcontrol, 548 struct snd_ctl_elem_value *value) 549 { 550 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol); 551 552 value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT; 553 return 0; 554 } 555 snd_bt87x_capture_volume_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)556 static int snd_bt87x_capture_volume_put(struct snd_kcontrol *kcontrol, 557 struct snd_ctl_elem_value *value) 558 { 559 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol); 560 u32 old_control; 561 int changed; 562 563 spin_lock_irq(&chip->reg_lock); 564 old_control = chip->reg_control; 565 chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK) 566 | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT); 567 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control); 568 changed = old_control != chip->reg_control; 569 spin_unlock_irq(&chip->reg_lock); 570 return changed; 571 } 572 573 static const struct snd_kcontrol_new snd_bt87x_capture_volume = { 574 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 575 .name = "Capture Volume", 576 .info = snd_bt87x_capture_volume_info, 577 .get = snd_bt87x_capture_volume_get, 578 .put = snd_bt87x_capture_volume_put, 579 }; 580 581 #define snd_bt87x_capture_boost_info snd_ctl_boolean_mono_info 582 snd_bt87x_capture_boost_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)583 static int snd_bt87x_capture_boost_get(struct snd_kcontrol *kcontrol, 584 struct snd_ctl_elem_value *value) 585 { 586 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol); 587 588 value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X); 589 return 0; 590 } 591 snd_bt87x_capture_boost_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)592 static int snd_bt87x_capture_boost_put(struct snd_kcontrol *kcontrol, 593 struct snd_ctl_elem_value *value) 594 { 595 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol); 596 u32 old_control; 597 int changed; 598 599 spin_lock_irq(&chip->reg_lock); 600 old_control = chip->reg_control; 601 chip->reg_control = (chip->reg_control & ~CTL_A_G2X) 602 | (value->value.integer.value[0] ? CTL_A_G2X : 0); 603 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control); 604 changed = chip->reg_control != old_control; 605 spin_unlock_irq(&chip->reg_lock); 606 return changed; 607 } 608 609 static const struct snd_kcontrol_new snd_bt87x_capture_boost = { 610 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 611 .name = "Capture Boost", 612 .info = snd_bt87x_capture_boost_info, 613 .get = snd_bt87x_capture_boost_get, 614 .put = snd_bt87x_capture_boost_put, 615 }; 616 snd_bt87x_capture_source_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * info)617 static int snd_bt87x_capture_source_info(struct snd_kcontrol *kcontrol, 618 struct snd_ctl_elem_info *info) 619 { 620 static const char *const texts[3] = {"TV Tuner", "FM", "Mic/Line"}; 621 622 return snd_ctl_enum_info(info, 1, 3, texts); 623 } 624 snd_bt87x_capture_source_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)625 static int snd_bt87x_capture_source_get(struct snd_kcontrol *kcontrol, 626 struct snd_ctl_elem_value *value) 627 { 628 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol); 629 630 value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT; 631 return 0; 632 } 633 snd_bt87x_capture_source_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)634 static int snd_bt87x_capture_source_put(struct snd_kcontrol *kcontrol, 635 struct snd_ctl_elem_value *value) 636 { 637 struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol); 638 u32 old_control; 639 int changed; 640 641 spin_lock_irq(&chip->reg_lock); 642 old_control = chip->reg_control; 643 chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK) 644 | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT); 645 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control); 646 changed = chip->reg_control != old_control; 647 spin_unlock_irq(&chip->reg_lock); 648 return changed; 649 } 650 651 static const struct snd_kcontrol_new snd_bt87x_capture_source = { 652 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 653 .name = "Capture Source", 654 .info = snd_bt87x_capture_source_info, 655 .get = snd_bt87x_capture_source_get, 656 .put = snd_bt87x_capture_source_put, 657 }; 658 snd_bt87x_free(struct snd_card * card)659 static void snd_bt87x_free(struct snd_card *card) 660 { 661 struct snd_bt87x *chip = card->private_data; 662 663 snd_bt87x_stop(chip); 664 } 665 snd_bt87x_pcm(struct snd_bt87x * chip,int device,char * name)666 static int snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name) 667 { 668 int err; 669 struct snd_pcm *pcm; 670 671 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm); 672 if (err < 0) 673 return err; 674 pcm->private_data = chip; 675 strcpy(pcm->name, name); 676 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops); 677 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG, 678 &chip->pci->dev, 679 128 * 1024, 680 ALIGN(255 * 4092, 1024)); 681 return 0; 682 } 683 snd_bt87x_create(struct snd_card * card,struct pci_dev * pci)684 static int snd_bt87x_create(struct snd_card *card, 685 struct pci_dev *pci) 686 { 687 struct snd_bt87x *chip = card->private_data; 688 int err; 689 690 err = pcim_enable_device(pci); 691 if (err < 0) 692 return err; 693 694 chip->card = card; 695 chip->pci = pci; 696 chip->irq = -1; 697 spin_lock_init(&chip->reg_lock); 698 699 err = pcim_iomap_regions(pci, 1 << 0, "Bt87x audio"); 700 if (err < 0) 701 return err; 702 chip->mmio = pcim_iomap_table(pci)[0]; 703 704 chip->reg_control = CTL_A_PWRDN | CTL_DA_ES2 | 705 CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT); 706 chip->interrupt_mask = MY_INTERRUPTS; 707 snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control); 708 snd_bt87x_writel(chip, REG_INT_MASK, 0); 709 snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS); 710 711 err = devm_request_irq(&pci->dev, pci->irq, snd_bt87x_interrupt, 712 IRQF_SHARED, KBUILD_MODNAME, chip); 713 if (err < 0) { 714 dev_err(card->dev, "cannot grab irq %d\n", pci->irq); 715 return err; 716 } 717 chip->irq = pci->irq; 718 card->sync_irq = chip->irq; 719 card->private_free = snd_bt87x_free; 720 pci_set_master(pci); 721 722 return 0; 723 } 724 725 #define BT_DEVICE(chip, subvend, subdev, id) \ 726 { .vendor = PCI_VENDOR_ID_BROOKTREE, \ 727 .device = chip, \ 728 .subvendor = subvend, .subdevice = subdev, \ 729 .driver_data = SND_BT87X_BOARD_ ## id } 730 /* driver_data is the card id for that device */ 731 732 static const struct pci_device_id snd_bt87x_ids[] = { 733 /* Hauppauge WinTV series */ 734 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, GENERIC), 735 /* Hauppauge WinTV series */ 736 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, GENERIC), 737 /* Viewcast Osprey 200 */ 738 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, OSPREY2x0), 739 /* Viewcast Osprey 440 (rate is configurable via gpio) */ 740 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff07, OSPREY440), 741 /* ATI TV-Wonder */ 742 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1002, 0x0001, GENERIC), 743 /* Leadtek Winfast tv 2000xp delux */ 744 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x107d, 0x6606, GENERIC), 745 /* Pinnacle PCTV */ 746 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x11bd, 0x0012, GENERIC), 747 /* Voodoo TV 200 */ 748 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x121a, 0x3000, GENERIC), 749 /* Askey Computer Corp. MagicTView'99 */ 750 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x144f, 0x3000, GENERIC), 751 /* AVerMedia Studio No. 103, 203, ...? */ 752 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1461, 0x0003, AVPHONE98), 753 /* Prolink PixelView PV-M4900 */ 754 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1554, 0x4011, GENERIC), 755 /* Pinnacle Studio PCTV rave */ 756 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0xbd11, 0x1200, GENERIC), 757 { } 758 }; 759 MODULE_DEVICE_TABLE(pci, snd_bt87x_ids); 760 761 /* cards known not to have audio 762 * (DVB cards use the audio function to transfer MPEG data) */ 763 static struct { 764 unsigned short subvendor, subdevice; 765 } denylist[] = { 766 {0x0071, 0x0101}, /* Nebula Electronics DigiTV */ 767 {0x11bd, 0x001c}, /* Pinnacle PCTV Sat */ 768 {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */ 769 {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */ 770 {0x1461, 0x0771}, /* AVermedia DVB-T 771 */ 771 {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */ 772 {0x18ac, 0xd500}, /* DVICO FusionHDTV 5 Lite */ 773 {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */ 774 {0x18ac, 0xdb11}, /* Ultraview DVB-T Lite */ 775 {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */ 776 {0x7063, 0x2000}, /* pcHDTV HD-2000 TV */ 777 }; 778 779 static struct pci_driver driver; 780 781 /* return the id of the card, or a negative value if it's on the denylist */ snd_bt87x_detect_card(struct pci_dev * pci)782 static int snd_bt87x_detect_card(struct pci_dev *pci) 783 { 784 int i; 785 const struct pci_device_id *supported; 786 787 supported = pci_match_id(snd_bt87x_ids, pci); 788 if (supported && supported->driver_data > 0) 789 return supported->driver_data; 790 791 for (i = 0; i < ARRAY_SIZE(denylist); ++i) 792 if (denylist[i].subvendor == pci->subsystem_vendor && 793 denylist[i].subdevice == pci->subsystem_device) { 794 dev_dbg(&pci->dev, 795 "card %#04x-%#04x:%#04x has no audio\n", 796 pci->device, pci->subsystem_vendor, pci->subsystem_device); 797 return -EBUSY; 798 } 799 800 dev_info(&pci->dev, "unknown card %#04x-%#04x:%#04x\n", 801 pci->device, pci->subsystem_vendor, pci->subsystem_device); 802 dev_info(&pci->dev, "please mail id, board name, and, " 803 "if it works, the correct digital_rate option to " 804 "<alsa-devel@alsa-project.org>\n"); 805 return SND_BT87X_BOARD_UNKNOWN; 806 } 807 __snd_bt87x_probe(struct pci_dev * pci,const struct pci_device_id * pci_id)808 static int __snd_bt87x_probe(struct pci_dev *pci, 809 const struct pci_device_id *pci_id) 810 { 811 static int dev; 812 struct snd_card *card; 813 struct snd_bt87x *chip; 814 int err; 815 enum snd_bt87x_boardid boardid; 816 817 if (!pci_id->driver_data) { 818 err = snd_bt87x_detect_card(pci); 819 if (err < 0) 820 return -ENODEV; 821 boardid = err; 822 } else 823 boardid = pci_id->driver_data; 824 825 if (dev >= SNDRV_CARDS) 826 return -ENODEV; 827 if (!enable[dev]) { 828 ++dev; 829 return -ENOENT; 830 } 831 832 err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE, 833 sizeof(*chip), &card); 834 if (err < 0) 835 return err; 836 chip = card->private_data; 837 838 err = snd_bt87x_create(card, pci); 839 if (err < 0) 840 return err; 841 842 memcpy(&chip->board, &snd_bt87x_boards[boardid], sizeof(chip->board)); 843 844 if (!chip->board.no_digital) { 845 if (digital_rate[dev] > 0) 846 chip->board.dig_rate = digital_rate[dev]; 847 848 chip->reg_control |= chip->board.digital_fmt; 849 850 err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital"); 851 if (err < 0) 852 return err; 853 } 854 if (!chip->board.no_analog) { 855 err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog"); 856 if (err < 0) 857 return err; 858 err = snd_ctl_add(card, snd_ctl_new1( 859 &snd_bt87x_capture_volume, chip)); 860 if (err < 0) 861 return err; 862 err = snd_ctl_add(card, snd_ctl_new1( 863 &snd_bt87x_capture_boost, chip)); 864 if (err < 0) 865 return err; 866 err = snd_ctl_add(card, snd_ctl_new1( 867 &snd_bt87x_capture_source, chip)); 868 if (err < 0) 869 return err; 870 } 871 dev_info(card->dev, "bt87x%d: Using board %d, %sanalog, %sdigital " 872 "(rate %d Hz)\n", dev, boardid, 873 chip->board.no_analog ? "no " : "", 874 chip->board.no_digital ? "no " : "", chip->board.dig_rate); 875 876 strcpy(card->driver, "Bt87x"); 877 sprintf(card->shortname, "Brooktree Bt%x", pci->device); 878 sprintf(card->longname, "%s at %#llx, irq %i", 879 card->shortname, (unsigned long long)pci_resource_start(pci, 0), 880 chip->irq); 881 strcpy(card->mixername, "Bt87x"); 882 883 err = snd_card_register(card); 884 if (err < 0) 885 return err; 886 887 pci_set_drvdata(pci, card); 888 ++dev; 889 return 0; 890 } 891 snd_bt87x_probe(struct pci_dev * pci,const struct pci_device_id * pci_id)892 static int snd_bt87x_probe(struct pci_dev *pci, 893 const struct pci_device_id *pci_id) 894 { 895 return snd_card_free_on_error(&pci->dev, __snd_bt87x_probe(pci, pci_id)); 896 } 897 898 /* default entries for all Bt87x cards - it's not exported */ 899 /* driver_data is set to 0 to call detection */ 900 static const struct pci_device_id snd_bt87x_default_ids[] = { 901 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN), 902 BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN), 903 { } 904 }; 905 906 static struct pci_driver driver = { 907 .name = KBUILD_MODNAME, 908 .id_table = snd_bt87x_ids, 909 .probe = snd_bt87x_probe, 910 }; 911 alsa_card_bt87x_init(void)912 static int __init alsa_card_bt87x_init(void) 913 { 914 if (load_all) 915 driver.id_table = snd_bt87x_default_ids; 916 return pci_register_driver(&driver); 917 } 918 alsa_card_bt87x_exit(void)919 static void __exit alsa_card_bt87x_exit(void) 920 { 921 pci_unregister_driver(&driver); 922 } 923 924 module_init(alsa_card_bt87x_init) 925 module_exit(alsa_card_bt87x_exit) 926