wm8731.c (06be5eefe1192eb8ce8d07497f67595b6bfe9741) wm8731.c (6702dfcc571d962df499f7466f54e07d044e6cd1)
1/*
2 * wm8731.c -- WM8731 ALSA SoC Audio driver
3 *
4 * Copyright 2005 Openedhand Ltd.
5 * Copyright 2006-12 Wolfson Microelectronics, plc
6 *
7 * Author: Richard Purdie <richard@openedhand.com>
8 *

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79 return reg == WM8731_RESET;
80}
81
82static bool wm8731_writeable(struct device *dev, unsigned int reg)
83{
84 return reg <= WM8731_RESET;
85}
86
1/*
2 * wm8731.c -- WM8731 ALSA SoC Audio driver
3 *
4 * Copyright 2005 Openedhand Ltd.
5 * Copyright 2006-12 Wolfson Microelectronics, plc
6 *
7 * Author: Richard Purdie <richard@openedhand.com>
8 *

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79 return reg == WM8731_RESET;
80}
81
82static bool wm8731_writeable(struct device *dev, unsigned int reg)
83{
84 return reg <= WM8731_RESET;
85}
86
87#define wm8731_reset(c) snd_soc_write(c, WM8731_RESET, 0)
87#define wm8731_reset(m) regmap_write(m, WM8731_RESET, 0)
88
89static const char *wm8731_input_select[] = {"Line In", "Mic"};
90
91static SOC_ENUM_SINGLE_DECL(wm8731_insel_enum,
92 WM8731_APANA, 2, wm8731_input_select);
93
94static int wm8731_deemph[] = { 0, 32000, 44100, 48000 };
95

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566 .channels_min = 1,
567 .channels_max = 2,
568 .rates = WM8731_RATES,
569 .formats = WM8731_FORMATS,},
570 .ops = &wm8731_dai_ops,
571 .symmetric_rates = 1,
572};
573
88
89static const char *wm8731_input_select[] = {"Line In", "Mic"};
90
91static SOC_ENUM_SINGLE_DECL(wm8731_insel_enum,
92 WM8731_APANA, 2, wm8731_input_select);
93
94static int wm8731_deemph[] = { 0, 32000, 44100, 48000 };
95

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566 .channels_min = 1,
567 .channels_max = 2,
568 .rates = WM8731_RATES,
569 .formats = WM8731_FORMATS,},
570 .ops = &wm8731_dai_ops,
571 .symmetric_rates = 1,
572};
573
574static int wm8731_probe(struct snd_soc_codec *codec)
574static int wm8731_request_supplies(struct device *dev,
575 struct wm8731_priv *wm8731)
575{
576{
576 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
577 int ret = 0, i;
578
579 for (i = 0; i < ARRAY_SIZE(wm8731->supplies); i++)
580 wm8731->supplies[i].supply = wm8731_supply_names[i];
581
577 int ret = 0, i;
578
579 for (i = 0; i < ARRAY_SIZE(wm8731->supplies); i++)
580 wm8731->supplies[i].supply = wm8731_supply_names[i];
581
582 ret = devm_regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8731->supplies),
582 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(wm8731->supplies),
583 wm8731->supplies);
584 if (ret != 0) {
583 wm8731->supplies);
584 if (ret != 0) {
585 dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
585 dev_err(dev, "Failed to request supplies: %d\n", ret);
586 return ret;
587 }
588
589 ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
590 wm8731->supplies);
591 if (ret != 0) {
586 return ret;
587 }
588
589 ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
590 wm8731->supplies);
591 if (ret != 0) {
592 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
592 dev_err(dev, "Failed to enable supplies: %d\n", ret);
593 return ret;
594 }
595
593 return ret;
594 }
595
596 ret = wm8731_reset(codec);
596 return 0;
597}
598
599static int wm8731_hw_init(struct device *dev, struct wm8731_priv *wm8731)
600{
601 int ret = 0;
602
603 ret = wm8731_reset(wm8731->regmap);
597 if (ret < 0) {
604 if (ret < 0) {
598 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
605 dev_err(dev, "Failed to issue reset: %d\n", ret);
599 goto err_regulator_enable;
600 }
601
606 goto err_regulator_enable;
607 }
608
602 snd_soc_codec_force_bias_level(codec, SND_SOC_BIAS_STANDBY);
609 /* Clear POWEROFF, keep everything else disabled */
610 regmap_write(wm8731->regmap, WM8731_PWR, 0x7f);
603
604 /* Latch the update bits */
611
612 /* Latch the update bits */
605 snd_soc_update_bits(codec, WM8731_LOUT1V, 0x100, 0);
606 snd_soc_update_bits(codec, WM8731_ROUT1V, 0x100, 0);
607 snd_soc_update_bits(codec, WM8731_LINVOL, 0x100, 0);
608 snd_soc_update_bits(codec, WM8731_RINVOL, 0x100, 0);
613 regmap_update_bits(wm8731->regmap, WM8731_LOUT1V, 0x100, 0);
614 regmap_update_bits(wm8731->regmap, WM8731_ROUT1V, 0x100, 0);
615 regmap_update_bits(wm8731->regmap, WM8731_LINVOL, 0x100, 0);
616 regmap_update_bits(wm8731->regmap, WM8731_RINVOL, 0x100, 0);
609
610 /* Disable bypass path by default */
617
618 /* Disable bypass path by default */
611 snd_soc_update_bits(codec, WM8731_APANA, 0x8, 0);
619 regmap_update_bits(wm8731->regmap, WM8731_APANA, 0x8, 0);
612
620
613 /* Regulators will have been enabled by bias management */
614 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
621 regcache_mark_dirty(wm8731->regmap);
615
622
616 return 0;
617
618err_regulator_enable:
623err_regulator_enable:
624 /* Regulators will be enabled by bias management */
619 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
620
621 return ret;
622}
623
625 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
626
627 return ret;
628}
629
624/* power down chip */
625static int wm8731_remove(struct snd_soc_codec *codec)
626{
627 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
628
629 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
630
631 return 0;
632}
633
634static struct snd_soc_codec_driver soc_codec_dev_wm8731 = {
630static struct snd_soc_codec_driver soc_codec_dev_wm8731 = {
635 .probe = wm8731_probe,
636 .remove = wm8731_remove,
637 .set_bias_level = wm8731_set_bias_level,
638 .suspend_bias_off = true,
639
640 .dapm_widgets = wm8731_dapm_widgets,
641 .num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
642 .dapm_routes = wm8731_intercon,
643 .num_dapm_routes = ARRAY_SIZE(wm8731_intercon),
644 .controls = wm8731_snd_controls,

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685 dev_err(&spi->dev, "Failed to get MCLK: %d\n",
686 ret);
687 return ret;
688 }
689 }
690
691 mutex_init(&wm8731->lock);
692
631 .set_bias_level = wm8731_set_bias_level,
632 .suspend_bias_off = true,
633
634 .dapm_widgets = wm8731_dapm_widgets,
635 .num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
636 .dapm_routes = wm8731_intercon,
637 .num_dapm_routes = ARRAY_SIZE(wm8731_intercon),
638 .controls = wm8731_snd_controls,

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679 dev_err(&spi->dev, "Failed to get MCLK: %d\n",
680 ret);
681 return ret;
682 }
683 }
684
685 mutex_init(&wm8731->lock);
686
687 spi_set_drvdata(spi, wm8731);
688
689 ret = wm8731_request_supplies(&spi->dev, wm8731);
690 if (ret != 0)
691 return ret;
692
693 wm8731->regmap = devm_regmap_init_spi(spi, &wm8731_regmap);
694 if (IS_ERR(wm8731->regmap)) {
695 ret = PTR_ERR(wm8731->regmap);
696 dev_err(&spi->dev, "Failed to allocate register map: %d\n",
697 ret);
698 return ret;
699 }
700
693 wm8731->regmap = devm_regmap_init_spi(spi, &wm8731_regmap);
694 if (IS_ERR(wm8731->regmap)) {
695 ret = PTR_ERR(wm8731->regmap);
696 dev_err(&spi->dev, "Failed to allocate register map: %d\n",
697 ret);
698 return ret;
699 }
700
701 spi_set_drvdata(spi, wm8731);
701 ret = wm8731_hw_init(&spi->dev, wm8731);
702 if (ret != 0)
703 return ret;
702
703 ret = snd_soc_register_codec(&spi->dev,
704 &soc_codec_dev_wm8731, &wm8731_dai, 1);
705 if (ret != 0) {
706 dev_err(&spi->dev, "Failed to register CODEC: %d\n", ret);
707 return ret;
708 }
709

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749 dev_err(&i2c->dev, "Failed to get MCLK: %d\n",
750 ret);
751 return ret;
752 }
753 }
754
755 mutex_init(&wm8731->lock);
756
704
705 ret = snd_soc_register_codec(&spi->dev,
706 &soc_codec_dev_wm8731, &wm8731_dai, 1);
707 if (ret != 0) {
708 dev_err(&spi->dev, "Failed to register CODEC: %d\n", ret);
709 return ret;
710 }
711

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751 dev_err(&i2c->dev, "Failed to get MCLK: %d\n",
752 ret);
753 return ret;
754 }
755 }
756
757 mutex_init(&wm8731->lock);
758
759 i2c_set_clientdata(i2c, wm8731);
760
761 ret = wm8731_request_supplies(&i2c->dev, wm8731);
762 if (ret != 0)
763 return ret;
764
757 wm8731->regmap = devm_regmap_init_i2c(i2c, &wm8731_regmap);
758 if (IS_ERR(wm8731->regmap)) {
759 ret = PTR_ERR(wm8731->regmap);
760 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
761 ret);
762 return ret;
763 }
764
765 wm8731->regmap = devm_regmap_init_i2c(i2c, &wm8731_regmap);
766 if (IS_ERR(wm8731->regmap)) {
767 ret = PTR_ERR(wm8731->regmap);
768 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
769 ret);
770 return ret;
771 }
772
765 i2c_set_clientdata(i2c, wm8731);
773 ret = wm8731_hw_init(&i2c->dev, wm8731);
774 if (ret != 0)
775 return ret;
766
767 ret = snd_soc_register_codec(&i2c->dev,
768 &soc_codec_dev_wm8731, &wm8731_dai, 1);
769 if (ret != 0) {
770 dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
771 return ret;
772 }
773

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777 ret = snd_soc_register_codec(&i2c->dev,
778 &soc_codec_dev_wm8731, &wm8731_dai, 1);
779 if (ret != 0) {
780 dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
781 return ret;
782 }
783

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