max98396.c (77c77f03fef76848c3a1f26e12bdc9268c79d9c3) max98396.c (d29e0a6e3631724c0b36786c6d9616b6e4ebeaa4)
1// SPDX-License-Identifier: GPL-2.0
2// Copyright (c) 2022, Analog Devices Inc.
3
4#include <linux/gpio/consumer.h>
5#include <linux/i2c.h>
6#include <linux/module.h>
7#include <sound/pcm_params.h>
8#include <linux/regulator/consumer.h>

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433 bclk_pol);
434
435 if (status && update)
436 max98396_global_enable_onoff(max98396->regmap, true);
437
438 return 0;
439}
440
1// SPDX-License-Identifier: GPL-2.0
2// Copyright (c) 2022, Analog Devices Inc.
3
4#include <linux/gpio/consumer.h>
5#include <linux/i2c.h>
6#include <linux/module.h>
7#include <sound/pcm_params.h>
8#include <linux/regulator/consumer.h>

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433 bclk_pol);
434
435 if (status && update)
436 max98396_global_enable_onoff(max98396->regmap, true);
437
438 return 0;
439}
440
441/* BCLKs per LRCLK */
442static const int bclk_sel_table[] = {
443 32, 48, 64, 96, 128, 192, 256, 384, 512, 320,
441#define MAX98396_BSEL_32 0x2
442#define MAX98396_BSEL_48 0x3
443#define MAX98396_BSEL_64 0x4
444#define MAX98396_BSEL_96 0x5
445#define MAX98396_BSEL_128 0x6
446#define MAX98396_BSEL_192 0x7
447#define MAX98396_BSEL_256 0x8
448#define MAX98396_BSEL_384 0x9
449#define MAX98396_BSEL_512 0xa
450#define MAX98396_BSEL_320 0xb
451#define MAX98396_BSEL_250 0xc
452#define MAX98396_BSEL_125 0xd
453
454/* Refer to table 5 in the datasheet */
455static const struct max98396_pcm_config {
456 int in, out, width, bsel, max_sr;
457} max98396_pcm_configs[] = {
458 { .in = 2, .out = 4, .width = 16, .bsel = MAX98396_BSEL_32, .max_sr = 192000 },
459 { .in = 2, .out = 6, .width = 24, .bsel = MAX98396_BSEL_48, .max_sr = 192000 },
460 { .in = 2, .out = 8, .width = 32, .bsel = MAX98396_BSEL_64, .max_sr = 192000 },
461 { .in = 3, .out = 15, .width = 32, .bsel = MAX98396_BSEL_125, .max_sr = 192000 },
462 { .in = 4, .out = 8, .width = 16, .bsel = MAX98396_BSEL_64, .max_sr = 192000 },
463 { .in = 4, .out = 12, .width = 24, .bsel = MAX98396_BSEL_96, .max_sr = 192000 },
464 { .in = 4, .out = 16, .width = 32, .bsel = MAX98396_BSEL_128, .max_sr = 192000 },
465 { .in = 5, .out = 15, .width = 24, .bsel = MAX98396_BSEL_125, .max_sr = 192000 },
466 { .in = 7, .out = 15, .width = 16, .bsel = MAX98396_BSEL_125, .max_sr = 192000 },
467 { .in = 2, .out = 4, .width = 16, .bsel = MAX98396_BSEL_32, .max_sr = 96000 },
468 { .in = 2, .out = 6, .width = 24, .bsel = MAX98396_BSEL_48, .max_sr = 96000 },
469 { .in = 2, .out = 8, .width = 32, .bsel = MAX98396_BSEL_64, .max_sr = 96000 },
470 { .in = 3, .out = 15, .width = 32, .bsel = MAX98396_BSEL_125, .max_sr = 96000 },
471 { .in = 4, .out = 8, .width = 16, .bsel = MAX98396_BSEL_64, .max_sr = 96000 },
472 { .in = 4, .out = 12, .width = 24, .bsel = MAX98396_BSEL_96, .max_sr = 96000 },
473 { .in = 4, .out = 16, .width = 32, .bsel = MAX98396_BSEL_128, .max_sr = 96000 },
474 { .in = 5, .out = 15, .width = 24, .bsel = MAX98396_BSEL_125, .max_sr = 96000 },
475 { .in = 7, .out = 15, .width = 16, .bsel = MAX98396_BSEL_125, .max_sr = 96000 },
476 { .in = 7, .out = 31, .width = 32, .bsel = MAX98396_BSEL_250, .max_sr = 96000 },
477 { .in = 8, .out = 16, .width = 16, .bsel = MAX98396_BSEL_128, .max_sr = 96000 },
478 { .in = 8, .out = 24, .width = 24, .bsel = MAX98396_BSEL_192, .max_sr = 96000 },
479 { .in = 8, .out = 32, .width = 32, .bsel = MAX98396_BSEL_256, .max_sr = 96000 },
480 { .in = 10, .out = 31, .width = 24, .bsel = MAX98396_BSEL_250, .max_sr = 96000 },
481 { .in = 15, .out = 31, .width = 16, .bsel = MAX98396_BSEL_250, .max_sr = 96000 },
482 { .in = 16, .out = 32, .width = 16, .bsel = MAX98396_BSEL_256, .max_sr = 96000 },
483 { .in = 7, .out = 31, .width = 32, .bsel = MAX98396_BSEL_250, .max_sr = 48000 },
484 { .in = 10, .out = 31, .width = 24, .bsel = MAX98396_BSEL_250, .max_sr = 48000 },
485 { .in = 10, .out = 40, .width = 32, .bsel = MAX98396_BSEL_320, .max_sr = 48000 },
486 { .in = 15, .out = 31, .width = 16, .bsel = MAX98396_BSEL_250, .max_sr = 48000 },
487 { .in = 16, .out = 48, .width = 24, .bsel = MAX98396_BSEL_384, .max_sr = 48000 },
488 { .in = 16, .out = 64, .width = 32, .bsel = MAX98396_BSEL_512, .max_sr = 48000 },
444};
445
489};
490
446static int max98396_get_bclk_sel(int bclk)
491static int max98396_pcm_config_index(int in_slots, int out_slots, int width)
447{
448 int i;
492{
493 int i;
449 /* match BCLKs per LRCLK */
450 for (i = 0; i < ARRAY_SIZE(bclk_sel_table); i++) {
451 if (bclk_sel_table[i] == bclk)
452 return i + 2;
453 }
454 return 0;
455}
456
494
457static int max98396_set_clock(struct snd_soc_component *component,
458 struct snd_pcm_hw_params *params)
459{
460 struct max98396_priv *max98396 = snd_soc_component_get_drvdata(component);
461 /* BCLK/LRCLK ratio calculation */
462 int blr_clk_ratio = params_channels(params) * max98396->ch_size;
463 int value;
495 for (i = 0; i < ARRAY_SIZE(max98396_pcm_configs); i++) {
496 const struct max98396_pcm_config *c = &max98396_pcm_configs[i];
464
497
465 if (!max98396->tdm_mode) {
466 /* BCLK configuration */
467 value = max98396_get_bclk_sel(blr_clk_ratio);
468 if (!value) {
469 dev_err(component->dev,
470 "blr_clk_ratio %d unsupported, format %d\n",
471 blr_clk_ratio, params_format(params));
472 return -EINVAL;
473 }
474
475 regmap_update_bits(max98396->regmap,
476 MAX98396_R2042_PCM_CLK_SETUP,
477 MAX98396_PCM_CLK_SETUP_BSEL_MASK,
478 value);
498 if (in_slots == c->in && out_slots <= c->out && width == c->width)
499 return i;
479 }
480
500 }
501
481 return 0;
502 return -1;
482}
483
484static int max98396_dai_hw_params(struct snd_pcm_substream *substream,
485 struct snd_pcm_hw_params *params,
486 struct snd_soc_dai *dai)
487{
488 struct snd_soc_component *component = dai->component;
489 struct max98396_priv *max98396 = snd_soc_component_get_drvdata(component);
490 unsigned int sampling_rate = 0;
491 unsigned int chan_sz = 0;
503}
504
505static int max98396_dai_hw_params(struct snd_pcm_substream *substream,
506 struct snd_pcm_hw_params *params,
507 struct snd_soc_dai *dai)
508{
509 struct snd_soc_component *component = dai->component;
510 struct max98396_priv *max98396 = snd_soc_component_get_drvdata(component);
511 unsigned int sampling_rate = 0;
512 unsigned int chan_sz = 0;
492 int ret, reg;
493 int status;
513 int ret, reg, status, bsel = 0;
494 bool update = false;
495
496 /* pcm mode configuration */
497 switch (snd_pcm_format_width(params_format(params))) {
498 case 16:
499 chan_sz = MAX98396_PCM_MODE_CFG_CHANSZ_16;
500 break;
501 case 24:
502 chan_sz = MAX98396_PCM_MODE_CFG_CHANSZ_24;
503 break;
504 case 32:
505 chan_sz = MAX98396_PCM_MODE_CFG_CHANSZ_32;
506 break;
507 default:
508 dev_err(component->dev, "format unsupported %d\n",
509 params_format(params));
510 goto err;
511 }
512
514 bool update = false;
515
516 /* pcm mode configuration */
517 switch (snd_pcm_format_width(params_format(params))) {
518 case 16:
519 chan_sz = MAX98396_PCM_MODE_CFG_CHANSZ_16;
520 break;
521 case 24:
522 chan_sz = MAX98396_PCM_MODE_CFG_CHANSZ_24;
523 break;
524 case 32:
525 chan_sz = MAX98396_PCM_MODE_CFG_CHANSZ_32;
526 break;
527 default:
528 dev_err(component->dev, "format unsupported %d\n",
529 params_format(params));
530 goto err;
531 }
532
513 max98396->ch_size = snd_pcm_format_width(params_format(params));
514
515 dev_dbg(component->dev, "format supported %d",
516 params_format(params));
517
518 /* sampling rate configuration */
519 switch (params_rate(params)) {
520 case 8000:
521 sampling_rate = MAX98396_PCM_SR_8000;
522 break;

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554 sampling_rate = MAX98396_PCM_SR_192000;
555 break;
556 default:
557 dev_err(component->dev, "rate %d not supported\n",
558 params_rate(params));
559 goto err;
560 }
561
533 dev_dbg(component->dev, "format supported %d",
534 params_format(params));
535
536 /* sampling rate configuration */
537 switch (params_rate(params)) {
538 case 8000:
539 sampling_rate = MAX98396_PCM_SR_8000;
540 break;

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572 sampling_rate = MAX98396_PCM_SR_192000;
573 break;
574 default:
575 dev_err(component->dev, "rate %d not supported\n",
576 params_rate(params));
577 goto err;
578 }
579
580 if (max98396->tdm_mode) {
581 if (params_rate(params) > max98396->tdm_max_samplerate) {
582 dev_err(component->dev, "TDM sample rate %d too high",
583 params_rate(params));
584 goto err;
585 }
586 } else {
587 /* BCLK configuration */
588 ret = max98396_pcm_config_index(params_channels(params),
589 params_channels(params),
590 snd_pcm_format_width(params_format(params)));
591 if (ret < 0) {
592 dev_err(component->dev,
593 "no PCM config for %d channels, format %d\n",
594 params_channels(params), params_format(params));
595 goto err;
596 }
597
598 bsel = max98396_pcm_configs[ret].bsel;
599
600 if (params_rate(params) > max98396_pcm_configs[ret].max_sr) {
601 dev_err(component->dev, "sample rate %d too high",
602 params_rate(params));
603 goto err;
604 }
605 }
606
562 ret = regmap_read(max98396->regmap, MAX98396_R210F_GLOBAL_EN, &status);
563 if (ret < 0)
564 goto err;
565
566 if (status) {
567 ret = regmap_read(max98396->regmap, MAX98396_R2041_PCM_MODE_CFG, &reg);
568 if (ret < 0)
569 goto err;

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599 (sampling_rate - 3)
600 << MAX98396_IVADC_SR_SHIFT);
601 else
602 regmap_update_bits(max98396->regmap,
603 MAX98396_R2043_PCM_SR_SETUP,
604 MAX98396_IVADC_SR_MASK,
605 sampling_rate << MAX98396_IVADC_SR_SHIFT);
606
607 ret = regmap_read(max98396->regmap, MAX98396_R210F_GLOBAL_EN, &status);
608 if (ret < 0)
609 goto err;
610
611 if (status) {
612 ret = regmap_read(max98396->regmap, MAX98396_R2041_PCM_MODE_CFG, &reg);
613 if (ret < 0)
614 goto err;

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644 (sampling_rate - 3)
645 << MAX98396_IVADC_SR_SHIFT);
646 else
647 regmap_update_bits(max98396->regmap,
648 MAX98396_R2043_PCM_SR_SETUP,
649 MAX98396_IVADC_SR_MASK,
650 sampling_rate << MAX98396_IVADC_SR_SHIFT);
651
607 ret = max98396_set_clock(component, params);
652 if (bsel)
653 regmap_update_bits(max98396->regmap,
654 MAX98396_R2042_PCM_CLK_SETUP,
655 MAX98396_PCM_CLK_SETUP_BSEL_MASK,
656 bsel);
608
609 if (status && update)
610 max98396_global_enable_onoff(max98396->regmap, true);
611
657
658 if (status && update)
659 max98396_global_enable_onoff(max98396->regmap, true);
660
612 return ret;
661 return 0;
613
614err:
615 return -EINVAL;
616}
617
618static int max98396_dai_tdm_slot(struct snd_soc_dai *dai,
619 unsigned int tx_mask, unsigned int rx_mask,
620 int slots, int slot_width)

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629 bool update = false;
630
631 if (!tx_mask && !rx_mask && !slots && !slot_width)
632 max98396->tdm_mode = false;
633 else
634 max98396->tdm_mode = true;
635
636 /* BCLK configuration */
662
663err:
664 return -EINVAL;
665}
666
667static int max98396_dai_tdm_slot(struct snd_soc_dai *dai,
668 unsigned int tx_mask, unsigned int rx_mask,
669 int slots, int slot_width)

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678 bool update = false;
679
680 if (!tx_mask && !rx_mask && !slots && !slot_width)
681 max98396->tdm_mode = false;
682 else
683 max98396->tdm_mode = true;
684
685 /* BCLK configuration */
637 bsel = max98396_get_bclk_sel(slots * slot_width);
638 if (bsel == 0) {
639 dev_err(component->dev, "BCLK %d not supported\n",
640 slots * slot_width);
686 ret = max98396_pcm_config_index(slots, slots, slot_width);
687 if (ret < 0) {
688 dev_err(component->dev, "no TDM config for %d slots %d bits\n",
689 slots, slot_width);
641 return -EINVAL;
642 }
643
690 return -EINVAL;
691 }
692
693 bsel = max98396_pcm_configs[ret].bsel;
694 max98396->tdm_max_samplerate = max98396_pcm_configs[ret].max_sr;
695
644 /* Channel size configuration */
645 switch (slot_width) {
646 case 16:
647 chan_sz = MAX98396_PCM_MODE_CFG_CHANSZ_16;
648 break;
649 case 24:
650 chan_sz = MAX98396_PCM_MODE_CFG_CHANSZ_24;
651 break;

--- 1115 unchanged lines hidden --- 		696 /* Channel size configuration */
697 switch (slot_width) {
698 case 16:
699 chan_sz = MAX98396_PCM_MODE_CFG_CHANSZ_16;
700 break;
701 case 24:
702 chan_sz = MAX98396_PCM_MODE_CFG_CHANSZ_24;
703 break;

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