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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 | // SPDX-License-Identifier: GPL-2.0 // // ak4613.c -- Asahi Kasei ALSA Soc Audio driver // // Copyright (C) 2015 Renesas Electronics Corporation // Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> // // Based on ak4642.c by Kuninori Morimoto // Based on wm8731.c by Richard Purdie // Based on ak4535.c by Richard Purdie // Based on wm8753.c by Liam Girdwood /* * +-------+ * |AK4613 | * SDTO1 <-| | * | | * SDTI1 ->| | * SDTI2 ->| | * SDTI3 ->| | * +-------+ * * +---+ * clk | |___________________________________________... * * [TDM512] * SDTO1 [L1][R1][L2][R2] * SDTI1 [L1][R1][L2][R2][L3][R3][L4][R4][L5][R5][L6][R6] * * [TDM256] * SDTO1 [L1][R1][L2][R2] * SDTI1 [L1][R1][L2][R2][L3][R3][L4][R4] * SDTI2 [L5][R5][L6][R6] * * [TDM128] * SDTO1 [L1][R1][L2][R2] * SDTI1 [L1][R1][L2][R2] * SDTI2 [L3][R3][L4][R4] * SDTI3 [L5][R5][L6][R6] * * [STEREO] * Playback 2ch : SDTI1 * Capture 2ch : SDTO1 * * [TDM512] * Playback 12ch : SDTI1 * Capture 4ch : SDTO1 * * [TDM256] * Playback 12ch : SDTI1 + SDTI2 * Playback 8ch : SDTI1 * Capture 4ch : SDTO1 * * [TDM128] * Playback 12ch : SDTI1 + SDTI2 + SDTI3 * Playback 8ch : SDTI1 + SDTI2 * Playback 4ch : SDTI1 * Capture 4ch : SDTO1 * * * !!! NOTE !!! * * Renesas is the only user of ak4613 on upstream so far, * but the chip connection is like below. * Thus, Renesas can't test all connection case. * Tested TDM is very limited. * * +-----+ +-----------+ * | SoC | | AK4613 | * | |<-----|SDTO1 IN1|<-- Mic * | | | IN2| * | | | | * | |----->|SDTI1 OUT1|--> Headphone * +-----+ |SDTI2 OUT2| * |SDTI3 OUT3| * | OUT4| * | OUT5| * | OUT6| * +-----------+ * * Renesas SoC can handle [2, 6,8] channels. * Ak4613 can handle [2,4, 8,12] channels. * * Because of above HW connection and available channels number, * Renesas could test are ... * * [STEREO] Playback 2ch : SDTI1 * Capture 2ch : SDTO1 * [TDM256] Playback 8ch : SDTI1 (*) * * (*) it used 8ch data between SoC <-> AK4613 on TDM256 mode, * but could confirm is only first 2ch because only 1 * Headphone is connected. * * see * AK4613_ENABLE_TDM_TEST */ #include <linux/clk.h> #include <linux/delay.h> #include <linux/i2c.h> #include <linux/slab.h> #include <linux/of_device.h> #include <linux/of_graph.h> #include <linux/module.h> #include <linux/regmap.h> #include <sound/soc.h> #include <sound/pcm_params.h> #include <sound/tlv.h> #define PW_MGMT1 0x00 /* Power Management 1 */ #define PW_MGMT2 0x01 /* Power Management 2 */ #define PW_MGMT3 0x02 /* Power Management 3 */ #define CTRL1 0x03 /* Control 1 */ #define CTRL2 0x04 /* Control 2 */ #define DEMP1 0x05 /* De-emphasis1 */ #define DEMP2 0x06 /* De-emphasis2 */ #define OFD 0x07 /* Overflow Detect */ #define ZRD 0x08 /* Zero Detect */ #define ICTRL 0x09 /* Input Control */ #define OCTRL 0x0a /* Output Control */ #define LOUT1 0x0b /* LOUT1 Volume Control */ #define ROUT1 0x0c /* ROUT1 Volume Control */ #define LOUT2 0x0d /* LOUT2 Volume Control */ #define ROUT2 0x0e /* ROUT2 Volume Control */ #define LOUT3 0x0f /* LOUT3 Volume Control */ #define ROUT3 0x10 /* ROUT3 Volume Control */ #define LOUT4 0x11 /* LOUT4 Volume Control */ #define ROUT4 0x12 /* ROUT4 Volume Control */ #define LOUT5 0x13 /* LOUT5 Volume Control */ #define ROUT5 0x14 /* ROUT5 Volume Control */ #define LOUT6 0x15 /* LOUT6 Volume Control */ #define ROUT6 0x16 /* ROUT6 Volume Control */ /* PW_MGMT1 */ #define RSTN BIT(0) #define PMDAC BIT(1) #define PMADC BIT(2) #define PMVR BIT(3) /* PW_MGMT2 */ #define PMAD_ALL 0x7 /* PW_MGMT3 */ #define PMDA_ALL 0x3f /* CTRL1 */ #define DIF0 BIT(3) #define DIF1 BIT(4) #define DIF2 BIT(5) #define TDM0 BIT(6) #define TDM1 BIT(7) #define NO_FMT (0xff) #define FMT_MASK (0xf8) /* CTRL2 */ #define DFS_MASK (3 << 2) #define DFS_NORMAL_SPEED (0 << 2) #define DFS_DOUBLE_SPEED (1 << 2) #define DFS_QUAD_SPEED (2 << 2) /* ICTRL */ #define ICTRL_MASK (0x3) /* OCTRL */ #define OCTRL_MASK (0x3F) /* * configs * * 0x000000BA * * B : AK4613_CONFIG_SDTI_x * A : AK4613_CONFIG_MODE_x */ #define AK4613_CONFIG_SET(priv, x) priv->configs |= AK4613_CONFIG_##x #define AK4613_CONFIG_GET(priv, x) (priv->configs & AK4613_CONFIG_##x##_MASK) /* * AK4613_CONFIG_SDTI_x * * It indicates how many SDTIx is connected. */ #define AK4613_CONFIG_SDTI_MASK (0xF << 4) #define AK4613_CONFIG_SDTI(x) (((x) & 0xF) << 4) #define AK4613_CONFIG_SDTI_set(priv, x) AK4613_CONFIG_SET(priv, SDTI(x)) #define AK4613_CONFIG_SDTI_get(priv) ((AK4613_CONFIG_GET(priv, SDTI) >> 4) & 0xF) /* * AK4613_CONFIG_MODE_x * * Same as Ctrl1 :: TDM1/TDM0 * No shift is requested * see * AK4613_CTRL1_TO_MODE() * Table 11/12/13/14 */ #define AK4613_CONFIG_MODE_MASK (0xF) #define AK4613_CONFIG_MODE_STEREO (0x0) #define AK4613_CONFIG_MODE_TDM512 (0x1) #define AK4613_CONFIG_MODE_TDM256 (0x2) #define AK4613_CONFIG_MODE_TDM128 (0x3) /* * !!!! FIXME !!!! * * Because of testable HW limitation, TDM256 8ch TDM was only tested. * This driver uses AK4613_ENABLE_TDM_TEST instead of new DT property so far. * Don't hesitate to update driver, you don't need to care compatible * with Renesas. * * #define AK4613_ENABLE_TDM_TEST */ struct ak4613_interface { unsigned int width; unsigned int fmt; u8 dif; }; struct ak4613_priv { struct mutex lock; struct snd_pcm_hw_constraint_list constraint_rates; struct snd_pcm_hw_constraint_list constraint_channels; struct work_struct dummy_write_work; struct snd_soc_component *component; unsigned int rate; unsigned int sysclk; unsigned int fmt; unsigned int configs; int cnt; u8 ctrl1; u8 oc; u8 ic; }; /* * Playback Volume * * max : 0x00 : 0 dB * ( 0.5 dB step ) * min : 0xFE : -127.0 dB * mute: 0xFF */ static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1); static const struct snd_kcontrol_new ak4613_snd_controls[] = { SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1, 0, 0xFF, 1, out_tlv), SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2, 0, 0xFF, 1, out_tlv), SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3, 0, 0xFF, 1, out_tlv), SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4, 0, 0xFF, 1, out_tlv), SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5, 0, 0xFF, 1, out_tlv), SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6, 0, 0xFF, 1, out_tlv), }; static const struct reg_default ak4613_reg[] = { { 0x0, 0x0f }, { 0x1, 0x07 }, { 0x2, 0x3f }, { 0x3, 0x20 }, { 0x4, 0x20 }, { 0x5, 0x55 }, { 0x6, 0x05 }, { 0x7, 0x07 }, { 0x8, 0x0f }, { 0x9, 0x07 }, { 0xa, 0x3f }, { 0xb, 0x00 }, { 0xc, 0x00 }, { 0xd, 0x00 }, { 0xe, 0x00 }, { 0xf, 0x00 }, { 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 }, { 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 }, }; /* * CTRL1 register * see * Table 11/12/13/14 */ #define AUDIO_IFACE(_dif, _width, _fmt) \ { \ .dif = _dif, \ .width = _width, \ .fmt = SND_SOC_DAIFMT_##_fmt,\ } static const struct ak4613_interface ak4613_iface[] = { /* It doesn't support asymmetric format */ AUDIO_IFACE(0x03, 24, LEFT_J), AUDIO_IFACE(0x04, 24, I2S), }; #define AK4613_CTRL1_TO_MODE(priv) ((priv)->ctrl1 >> 6) /* AK4613_CONFIG_MODE_x */ static const struct regmap_config ak4613_regmap_cfg = { .reg_bits = 8, .val_bits = 8, .max_register = 0x16, .reg_defaults = ak4613_reg, .num_reg_defaults = ARRAY_SIZE(ak4613_reg), .cache_type = REGCACHE_RBTREE, }; static const struct of_device_id ak4613_of_match[] = { { .compatible = "asahi-kasei,ak4613", .data = &ak4613_regmap_cfg }, {}, }; MODULE_DEVICE_TABLE(of, ak4613_of_match); static const struct i2c_device_id ak4613_i2c_id[] = { { "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg }, { } }; MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id); static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = { /* Outputs */ SND_SOC_DAPM_OUTPUT("LOUT1"), SND_SOC_DAPM_OUTPUT("LOUT2"), SND_SOC_DAPM_OUTPUT("LOUT3"), SND_SOC_DAPM_OUTPUT("LOUT4"), SND_SOC_DAPM_OUTPUT("LOUT5"), SND_SOC_DAPM_OUTPUT("LOUT6"), SND_SOC_DAPM_OUTPUT("ROUT1"), SND_SOC_DAPM_OUTPUT("ROUT2"), SND_SOC_DAPM_OUTPUT("ROUT3"), SND_SOC_DAPM_OUTPUT("ROUT4"), SND_SOC_DAPM_OUTPUT("ROUT5"), SND_SOC_DAPM_OUTPUT("ROUT6"), /* Inputs */ SND_SOC_DAPM_INPUT("LIN1"), SND_SOC_DAPM_INPUT("LIN2"), SND_SOC_DAPM_INPUT("RIN1"), SND_SOC_DAPM_INPUT("RIN2"), /* DAC */ SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0), SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0), SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0), SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0), SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0), SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0), /* ADC */ SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0), SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0), }; static const struct snd_soc_dapm_route ak4613_intercon[] = { {"LOUT1", NULL, "DAC1"}, {"LOUT2", NULL, "DAC2"}, {"LOUT3", NULL, "DAC3"}, {"LOUT4", NULL, "DAC4"}, {"LOUT5", NULL, "DAC5"}, {"LOUT6", NULL, "DAC6"}, {"ROUT1", NULL, "DAC1"}, {"ROUT2", NULL, "DAC2"}, {"ROUT3", NULL, "DAC3"}, {"ROUT4", NULL, "DAC4"}, {"ROUT5", NULL, "DAC5"}, {"ROUT6", NULL, "DAC6"}, {"DAC1", NULL, "Playback"}, {"DAC2", NULL, "Playback"}, {"DAC3", NULL, "Playback"}, {"DAC4", NULL, "Playback"}, {"DAC5", NULL, "Playback"}, {"DAC6", NULL, "Playback"}, {"Capture", NULL, "ADC1"}, {"Capture", NULL, "ADC2"}, {"ADC1", NULL, "LIN1"}, {"ADC2", NULL, "LIN2"}, {"ADC1", NULL, "RIN1"}, {"ADC2", NULL, "RIN2"}, }; static void ak4613_dai_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_component *component = dai->component; struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); struct device *dev = component->dev; mutex_lock(&priv->lock); priv->cnt--; if (priv->cnt < 0) { dev_err(dev, "unexpected counter error\n"); priv->cnt = 0; } if (!priv->cnt) priv->ctrl1 = 0; mutex_unlock(&priv->lock); } static void ak4613_hw_constraints(struct ak4613_priv *priv, struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; static const unsigned int ak4613_rates[] = { 32000, 44100, 48000, 64000, 88200, 96000, 176400, 192000, }; #define AK4613_CHANNEL_2 0 #define AK4613_CHANNEL_4 1 #define AK4613_CHANNEL_8 2 #define AK4613_CHANNEL_12 3 #define AK4613_CHANNEL_NONE -1 static const unsigned int ak4613_channels[] = { [AK4613_CHANNEL_2] = 2, [AK4613_CHANNEL_4] = 4, [AK4613_CHANNEL_8] = 8, [AK4613_CHANNEL_12] = 12, }; #define MODE_MAX 4 #define SDTx_MAX 4 #define MASK(x) (1 << AK4613_CHANNEL_##x) static const int mask_list[MODE_MAX][SDTx_MAX] = { /* SDTO SDTIx1 SDTIx2 SDTIx3 */ [AK4613_CONFIG_MODE_STEREO] = { MASK(2), MASK(2), MASK(2), MASK(2)}, [AK4613_CONFIG_MODE_TDM512] = { MASK(4), MASK(12), MASK(12), MASK(12)}, [AK4613_CONFIG_MODE_TDM256] = { MASK(4), MASK(8), MASK(8)|MASK(12), MASK(8)|MASK(12)}, [AK4613_CONFIG_MODE_TDM128] = { MASK(4), MASK(4), MASK(4)|MASK(8), MASK(4)|MASK(8)|MASK(12)}, }; struct snd_pcm_hw_constraint_list *constraint; unsigned int mask; unsigned int mode; unsigned int fs; int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; int sdti_num; int i; constraint = &priv->constraint_rates; constraint->list = ak4613_rates; constraint->mask = 0; constraint->count = 0; /* * Slave Mode * Normal: [32kHz, 48kHz] : 256fs,384fs or 512fs * Double: [64kHz, 96kHz] : 256fs * Quad : [128kHz,192kHz]: 128fs * * Master mode * Normal: [32kHz, 48kHz] : 256fs or 512fs * Double: [64kHz, 96kHz] : 256fs * Quad : [128kHz,192kHz]: 128fs */ for (i = 0; i < ARRAY_SIZE(ak4613_rates); i++) { /* minimum fs on each range */ fs = (ak4613_rates[i] <= 96000) ? 256 : 128; if (priv->sysclk >= ak4613_rates[i] * fs) constraint->count = i + 1; } snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, constraint); sdti_num = AK4613_CONFIG_SDTI_get(priv); if (WARN_ON(sdti_num >= SDTx_MAX)) return; if (priv->cnt) { /* * If it was already working, * the constraint is same as working mode. */ mode = AK4613_CTRL1_TO_MODE(priv); mask = 0; /* no default */ } else { /* * It is not yet working, * the constraint is based on board configs. * STEREO mask is default */ mode = AK4613_CONFIG_GET(priv, MODE); mask = mask_list[AK4613_CONFIG_MODE_STEREO][is_play * sdti_num]; } if (WARN_ON(mode >= MODE_MAX)) return; /* add each mode mask */ mask |= mask_list[mode][is_play * sdti_num]; constraint = &priv->constraint_channels; constraint->list = ak4613_channels; constraint->mask = mask; constraint->count = sizeof(ak4613_channels); snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, constraint); } static int ak4613_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_component *component = dai->component; struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); mutex_lock(&priv->lock); ak4613_hw_constraints(priv, substream); priv->cnt++; mutex_unlock(&priv->lock); return 0; } static int ak4613_dai_set_sysclk(struct snd_soc_dai *codec_dai, int clk_id, unsigned int freq, int dir) { struct snd_soc_component *component = codec_dai->component; struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); priv->sysclk = freq; return 0; } static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int format) { struct snd_soc_component *component = dai->component; struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); unsigned int fmt; fmt = format & SND_SOC_DAIFMT_FORMAT_MASK; switch (fmt) { case SND_SOC_DAIFMT_LEFT_J: case SND_SOC_DAIFMT_I2S: priv->fmt = fmt; break; default: return -EINVAL; } fmt = format & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK; switch (fmt) { case SND_SOC_DAIFMT_CBC_CFC: break; default: /* * SUPPORTME * * "clock provider" is not yet supperted */ return -EINVAL; } return 0; } static int ak4613_dai_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct snd_soc_component *component = dai->component; struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); struct device *dev = component->dev; unsigned int width = params_width(params); unsigned int fmt = priv->fmt; unsigned int rate; int i, ret; u8 ctrl2; rate = params_rate(params); switch (rate) { case 32000: case 44100: case 48000: ctrl2 = DFS_NORMAL_SPEED; break; case 64000: case 88200: case 96000: ctrl2 = DFS_DOUBLE_SPEED; break; case 176400: case 192000: ctrl2 = DFS_QUAD_SPEED; break; default: return -EINVAL; } priv->rate = rate; /* * FIXME * * It doesn't have full TDM suppert yet */ ret = -EINVAL; mutex_lock(&priv->lock); if (priv->cnt > 1) { /* * If it was already working, use current priv->ctrl1 */ ret = 0; } else { /* * It is not yet working, */ unsigned int channel = params_channels(params); u8 tdm; /* STEREO or TDM */ if (channel == 2) tdm = AK4613_CONFIG_MODE_STEREO; else tdm = AK4613_CONFIG_GET(priv, MODE); for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) { const struct ak4613_interface *iface = ak4613_iface + i; if ((iface->fmt == fmt) && (iface->width == width)) { /* * Ctrl1 * | D7 | D6 | D5 | D4 | D3 | D2 | D1 | D0 | * |TDM1|TDM0|DIF2|DIF1|DIF0|ATS1|ATS0|SMUTE| * < tdm > < iface->dif > */ priv->ctrl1 = (tdm << 6) | (iface->dif << 3); ret = 0; break; } } } mutex_unlock(&priv->lock); if (ret < 0) goto hw_params_end; snd_soc_component_update_bits(component, CTRL1, FMT_MASK, priv->ctrl1); snd_soc_component_update_bits(component, CTRL2, DFS_MASK, ctrl2); snd_soc_component_update_bits(component, ICTRL, ICTRL_MASK, priv->ic); snd_soc_component_update_bits(component, OCTRL, OCTRL_MASK, priv->oc); hw_params_end: if (ret < 0) dev_warn(dev, "unsupported data width/format combination\n"); return ret; } static int ak4613_set_bias_level(struct snd_soc_component *component, enum snd_soc_bias_level level) { u8 mgmt1 = 0; switch (level) { case SND_SOC_BIAS_ON: mgmt1 |= RSTN; fallthrough; case SND_SOC_BIAS_PREPARE: mgmt1 |= PMADC | PMDAC; fallthrough; case SND_SOC_BIAS_STANDBY: mgmt1 |= PMVR; fallthrough; case SND_SOC_BIAS_OFF: default: break; } snd_soc_component_write(component, PW_MGMT1, mgmt1); return 0; } static void ak4613_dummy_write(struct work_struct *work) { struct ak4613_priv *priv = container_of(work, struct ak4613_priv, dummy_write_work); struct snd_soc_component *component = priv->component; unsigned int mgmt1; unsigned int mgmt3; /* * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks * * Note * * To avoid extra delay, we want to avoid preemption here, * but we can't. Because it uses I2C access which is using IRQ * and sleep. Thus, delay might be more than 5 LR clocks * see also * ak4613_dai_trigger() */ udelay(5000000 / priv->rate); mgmt1 = snd_soc_component_read(component, PW_MGMT1); mgmt3 = snd_soc_component_read(component, PW_MGMT3); snd_soc_component_write(component, PW_MGMT1, mgmt1); snd_soc_component_write(component, PW_MGMT3, mgmt3); } static int ak4613_dai_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { struct snd_soc_component *component = dai->component; struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); /* * FIXME * * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks * from Power Down Release. Otherwise, Playback volume will be 0dB. * To avoid complex multiple delay/dummy_write method from * ak4613_set_bias_level() / SND_SOC_DAPM_DAC_E("DACx", ...), * call it once here. * * But, unfortunately, we can't "write" here because here is atomic * context (It uses I2C access for writing). * Thus, use schedule_work() to switching to normal context * immediately. * * Note * * Calling ak4613_dummy_write() function might be delayed. * In such case, ak4613 volume might be temporarily 0dB when * beggining of playback. * see also * ak4613_dummy_write() */ if ((cmd != SNDRV_PCM_TRIGGER_START) && (cmd != SNDRV_PCM_TRIGGER_RESUME)) return 0; if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK) return 0; priv->component = component; schedule_work(&priv->dummy_write_work); return 0; } /* * Select below from Sound Card, not Auto * SND_SOC_DAIFMT_CBC_CFC * SND_SOC_DAIFMT_CBP_CFP */ static u64 ak4613_dai_formats = SND_SOC_POSSIBLE_DAIFMT_I2S | SND_SOC_POSSIBLE_DAIFMT_LEFT_J; static const struct snd_soc_dai_ops ak4613_dai_ops = { .startup = ak4613_dai_startup, .shutdown = ak4613_dai_shutdown, .set_sysclk = ak4613_dai_set_sysclk, .set_fmt = ak4613_dai_set_fmt, .trigger = ak4613_dai_trigger, .hw_params = ak4613_dai_hw_params, .auto_selectable_formats = &ak4613_dai_formats, .num_auto_selectable_formats = 1, }; #define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 |\ SNDRV_PCM_RATE_44100 |\ SNDRV_PCM_RATE_48000 |\ SNDRV_PCM_RATE_64000 |\ SNDRV_PCM_RATE_88200 |\ SNDRV_PCM_RATE_96000 |\ SNDRV_PCM_RATE_176400 |\ SNDRV_PCM_RATE_192000) #define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S24_LE) static struct snd_soc_dai_driver ak4613_dai = { .name = "ak4613-hifi", .playback = { .stream_name = "Playback", .channels_min = 2, .channels_max = 12, .rates = AK4613_PCM_RATE, .formats = AK4613_PCM_FMTBIT, }, .capture = { .stream_name = "Capture", .channels_min = 2, .channels_max = 4, .rates = AK4613_PCM_RATE, .formats = AK4613_PCM_FMTBIT, }, .ops = &ak4613_dai_ops, .symmetric_rate = 1, }; static int ak4613_suspend(struct snd_soc_component *component) { struct regmap *regmap = dev_get_regmap(component->dev, NULL); regcache_cache_only(regmap, true); regcache_mark_dirty(regmap); return 0; } static int ak4613_resume(struct snd_soc_component *component) { struct regmap *regmap = dev_get_regmap(component->dev, NULL); regcache_cache_only(regmap, false); return regcache_sync(regmap); } static const struct snd_soc_component_driver soc_component_dev_ak4613 = { .suspend = ak4613_suspend, .resume = ak4613_resume, .set_bias_level = ak4613_set_bias_level, .controls = ak4613_snd_controls, .num_controls = ARRAY_SIZE(ak4613_snd_controls), .dapm_widgets = ak4613_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets), .dapm_routes = ak4613_intercon, .num_dapm_routes = ARRAY_SIZE(ak4613_intercon), .idle_bias_on = 1, .endianness = 1, }; static void ak4613_parse_of(struct ak4613_priv *priv, struct device *dev) { struct device_node *np = dev->of_node; char prop[32]; int sdti_num; int i; /* Input 1 - 2 */ for (i = 0; i < 2; i++) { snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1); if (!of_get_property(np, prop, NULL)) priv->ic |= 1 << i; } /* Output 1 - 6 */ for (i = 0; i < 6; i++) { snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1); if (!of_get_property(np, prop, NULL)) priv->oc |= 1 << i; } /* * enable TDM256 test * * !!! FIXME !!! * * It should be configured by DT or other way * if it was full supported. * But it is using ifdef style for now for test * purpose. */ #if defined(AK4613_ENABLE_TDM_TEST) AK4613_CONFIG_SET(priv, MODE_TDM256); #endif /* * connected STDI * TDM support is assuming it is probed via Audio-Graph-Card style here. * Default is SDTIx1 if it was probed via Simple-Audio-Card for now. */ sdti_num = of_graph_get_endpoint_count(np); if ((sdti_num >= SDTx_MAX) || (sdti_num < 1)) sdti_num = 1; AK4613_CONFIG_SDTI_set(priv, sdti_num); } static int ak4613_i2c_probe(struct i2c_client *i2c) { struct device *dev = &i2c->dev; struct device_node *np = dev->of_node; const struct regmap_config *regmap_cfg; struct regmap *regmap; struct ak4613_priv *priv; regmap_cfg = NULL; if (np) regmap_cfg = of_device_get_match_data(dev); else { const struct i2c_device_id *id = i2c_match_id(ak4613_i2c_id, i2c); regmap_cfg = (const struct regmap_config *)id->driver_data; } if (!regmap_cfg) return -EINVAL; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; ak4613_parse_of(priv, dev); priv->ctrl1 = 0; priv->cnt = 0; priv->sysclk = 0; INIT_WORK(&priv->dummy_write_work, ak4613_dummy_write); mutex_init(&priv->lock); i2c_set_clientdata(i2c, priv); regmap = devm_regmap_init_i2c(i2c, regmap_cfg); if (IS_ERR(regmap)) return PTR_ERR(regmap); return devm_snd_soc_register_component(dev, &soc_component_dev_ak4613, &ak4613_dai, 1); } static struct i2c_driver ak4613_i2c_driver = { .driver = { .name = "ak4613-codec", .of_match_table = ak4613_of_match, }, .probe_new = ak4613_i2c_probe, .id_table = ak4613_i2c_id, }; module_i2c_driver(ak4613_i2c_driver); MODULE_DESCRIPTION("Soc AK4613 driver"); MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); MODULE_LICENSE("GPL v2"); |