/* * ASoC Driver for HiFiBerry DAC+ / DAC Pro with ADC PRO Version (SW control) * * Author: Daniel Matuschek, Stuart MacLean * Copyright 2014-2015 * based on code by Florian Meier * ADC, HP added by Joerg Schambacher * Copyright 2018-21 * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "../codecs/pcm512x.h" #include "../codecs/pcm186x.h" #define HIFIBERRY_DACPRO_NOCLOCK 0 #define HIFIBERRY_DACPRO_CLK44EN 1 #define HIFIBERRY_DACPRO_CLK48EN 2 struct pcm512x_priv { struct regmap *regmap; struct clk *sclk; }; /* Clock rate of CLK44EN attached to GPIO6 pin */ #define CLK_44EN_RATE 22579200UL /* Clock rate of CLK48EN attached to GPIO3 pin */ #define CLK_48EN_RATE 24576000UL static bool slave; static bool snd_rpi_hifiberry_is_dacpro; static bool digital_gain_0db_limit = true; static bool leds_off; static const unsigned int pcm186x_adc_input_channel_sel_value[] = { 0x00, 0x01, 0x02, 0x03, 0x10 }; static const char * const pcm186x_adcl_input_channel_sel_text[] = { "No Select", "VINL1[SE]", /* Default for ADCL */ "VINL2[SE]", "VINL2[SE] + VINL1[SE]", "{VIN1P, VIN1M}[DIFF]" }; static const char * const pcm186x_adcr_input_channel_sel_text[] = { "No Select", "VINR1[SE]", /* Default for ADCR */ "VINR2[SE]", "VINR2[SE] + VINR1[SE]", "{VIN2P, VIN2M}[DIFF]" }; static const struct soc_enum pcm186x_adc_input_channel_sel[] = { SOC_VALUE_ENUM_SINGLE(PCM186X_ADC1_INPUT_SEL_L, 0, PCM186X_ADC_INPUT_SEL_MASK, ARRAY_SIZE(pcm186x_adcl_input_channel_sel_text), pcm186x_adcl_input_channel_sel_text, pcm186x_adc_input_channel_sel_value), SOC_VALUE_ENUM_SINGLE(PCM186X_ADC1_INPUT_SEL_R, 0, PCM186X_ADC_INPUT_SEL_MASK, ARRAY_SIZE(pcm186x_adcr_input_channel_sel_text), pcm186x_adcr_input_channel_sel_text, pcm186x_adc_input_channel_sel_value), }; static const unsigned int pcm186x_mic_bias_sel_value[] = { 0x00, 0x01, 0x11 }; static const char * const pcm186x_mic_bias_sel_text[] = { "Mic Bias off", "Mic Bias on", "Mic Bias with Bypass Resistor" }; static const struct soc_enum pcm186x_mic_bias_sel[] = { SOC_VALUE_ENUM_SINGLE(PCM186X_MIC_BIAS_CTRL, 0, GENMASK(4, 0), ARRAY_SIZE(pcm186x_mic_bias_sel_text), pcm186x_mic_bias_sel_text, pcm186x_mic_bias_sel_value), }; static const unsigned int pcm186x_gain_sel_value[] = { 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50 }; static const char * const pcm186x_gain_sel_text[] = { "-12.0dB", "-11.5dB", "-11.0dB", "-10.5dB", "-10.0dB", "-9.5dB", "-9.0dB", "-8.5dB", "-8.0dB", "-7.5dB", "-7.0dB", "-6.5dB", "-6.0dB", "-5.5dB", "-5.0dB", "-4.5dB", "-4.0dB", "-3.5dB", "-3.0dB", "-2.5dB", "-2.0dB", "-1.5dB", "-1.0dB", "-0.5dB", "0.0dB", "0.5dB", "1.0dB", "1.5dB", "2.0dB", "2.5dB", "3.0dB", "3.5dB", "4.0dB", "4.5dB", "5.0dB", "5.5dB", "6.0dB", "6.5dB", "7.0dB", "7.5dB", "8.0dB", "8.5dB", "9.0dB", "9.5dB", "10.0dB", "10.5dB", "11.0dB", "11.5dB", "12.0dB", "12.5dB", "13.0dB", "13.5dB", "14.0dB", "14.5dB", "15.0dB", "15.5dB", "16.0dB", "16.5dB", "17.0dB", "17.5dB", "18.0dB", "18.5dB", "19.0dB", "19.5dB", "20.0dB", "20.5dB", "21.0dB", "21.5dB", "22.0dB", "22.5dB", "23.0dB", "23.5dB", "24.0dB", "24.5dB", "25.0dB", "25.5dB", "26.0dB", "26.5dB", "27.0dB", "27.5dB", "28.0dB", "28.5dB", "29.0dB", "29.5dB", "30.0dB", "30.5dB", "31.0dB", "31.5dB", "32.0dB", "32.5dB", "33.0dB", "33.5dB", "34.0dB", "34.5dB", "35.0dB", "35.5dB", "36.0dB", "36.5dB", "37.0dB", "37.5dB", "38.0dB", "38.5dB", "39.0dB", "39.5dB", "40.0dB"}; static const struct soc_enum pcm186x_gain_sel[] = { SOC_VALUE_ENUM_SINGLE(PCM186X_PGA_VAL_CH1_L, 0, 0xff, ARRAY_SIZE(pcm186x_gain_sel_text), pcm186x_gain_sel_text, pcm186x_gain_sel_value), SOC_VALUE_ENUM_SINGLE(PCM186X_PGA_VAL_CH1_R, 0, 0xff, ARRAY_SIZE(pcm186x_gain_sel_text), pcm186x_gain_sel_text, pcm186x_gain_sel_value), }; static const struct snd_kcontrol_new pcm1863_snd_controls_card[] = { SOC_ENUM("ADC Left Input", pcm186x_adc_input_channel_sel[0]), SOC_ENUM("ADC Right Input", pcm186x_adc_input_channel_sel[1]), SOC_ENUM("ADC Mic Bias", pcm186x_mic_bias_sel), SOC_ENUM("PGA Gain Left", pcm186x_gain_sel[0]), SOC_ENUM("PGA Gain Right", pcm186x_gain_sel[1]), }; static int pcm1863_add_controls(struct snd_soc_component *component) { snd_soc_add_component_controls(component, pcm1863_snd_controls_card, ARRAY_SIZE(pcm1863_snd_controls_card)); return 0; } static void snd_rpi_hifiberry_dacplusadcpro_select_clk( struct snd_soc_component *component, int clk_id) { switch (clk_id) { case HIFIBERRY_DACPRO_NOCLOCK: snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x24, 0x00); break; case HIFIBERRY_DACPRO_CLK44EN: snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x24, 0x20); break; case HIFIBERRY_DACPRO_CLK48EN: snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x24, 0x04); break; } usleep_range(3000, 4000); } static void snd_rpi_hifiberry_dacplusadcpro_clk_gpio(struct snd_soc_component *component) { snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x24, 0x24); snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_3, 0x0f, 0x02); snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_6, 0x0f, 0x02); } static bool snd_rpi_hifiberry_dacplusadcpro_is_sclk(struct snd_soc_component *component) { unsigned int sck; sck = snd_soc_component_read(component, PCM512x_RATE_DET_4); return (!(sck & 0x40)); } static bool snd_rpi_hifiberry_dacplusadcpro_is_pro_card(struct snd_soc_component *component) { bool isClk44EN, isClk48En, isNoClk; snd_rpi_hifiberry_dacplusadcpro_clk_gpio(component); snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_CLK44EN); isClk44EN = snd_rpi_hifiberry_dacplusadcpro_is_sclk(component); snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_NOCLOCK); isNoClk = snd_rpi_hifiberry_dacplusadcpro_is_sclk(component); snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_CLK48EN); isClk48En = snd_rpi_hifiberry_dacplusadcpro_is_sclk(component); return (isClk44EN && isClk48En && !isNoClk); } static int snd_rpi_hifiberry_dacplusadcpro_clk_for_rate(int sample_rate) { int type; switch (sample_rate) { case 11025: case 22050: case 44100: case 88200: case 176400: case 352800: type = HIFIBERRY_DACPRO_CLK44EN; break; default: type = HIFIBERRY_DACPRO_CLK48EN; break; } return type; } static void snd_rpi_hifiberry_dacplusadcpro_set_sclk(struct snd_soc_component *component, int sample_rate) { struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component); if (!IS_ERR(pcm512x->sclk)) { int ctype; ctype = snd_rpi_hifiberry_dacplusadcpro_clk_for_rate(sample_rate); clk_set_rate(pcm512x->sclk, (ctype == HIFIBERRY_DACPRO_CLK44EN) ? CLK_44EN_RATE : CLK_48EN_RATE); snd_rpi_hifiberry_dacplusadcpro_select_clk(component, ctype); } } static int snd_rpi_hifiberry_dacplusadcpro_init(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_component *dac = asoc_rtd_to_codec(rtd, 0)->component; struct snd_soc_component *adc = asoc_rtd_to_codec(rtd, 1)->component; struct snd_soc_dai_driver *adc_driver = asoc_rtd_to_codec(rtd, 1)->driver; struct pcm512x_priv *priv; int ret; if (slave) snd_rpi_hifiberry_is_dacpro = false; else snd_rpi_hifiberry_is_dacpro = snd_rpi_hifiberry_dacplusadcpro_is_pro_card(dac); if (snd_rpi_hifiberry_is_dacpro) { struct snd_soc_dai_link *dai = rtd->dai_link; dai->name = "HiFiBerry DAC+ADC Pro"; dai->stream_name = "HiFiBerry DAC+ADC Pro HiFi"; dai->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM; // set DAC DAI configuration ret = snd_soc_dai_set_fmt(asoc_rtd_to_codec(rtd, 0), SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); if (ret < 0) return ret; // set ADC DAI configuration ret = snd_soc_dai_set_fmt(asoc_rtd_to_codec(rtd, 1), SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); if (ret < 0) return ret; // set CPU DAI configuration ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0), SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); if (ret < 0) return ret; snd_soc_component_update_bits(dac, PCM512x_BCLK_LRCLK_CFG, 0x31, 0x11); snd_soc_component_update_bits(dac, PCM512x_MASTER_MODE, 0x03, 0x03); snd_soc_component_update_bits(dac, PCM512x_MASTER_CLKDIV_2, 0x7f, 63); } else { priv = snd_soc_component_get_drvdata(dac); priv->sclk = ERR_PTR(-ENOENT); } /* disable 24bit mode as long as I2S module does not have sign extension fixed */ adc_driver->capture.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE; snd_soc_component_update_bits(dac, PCM512x_GPIO_EN, 0x08, 0x08); snd_soc_component_update_bits(dac, PCM512x_GPIO_OUTPUT_4, 0x0f, 0x02); if (leds_off) snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x00); else snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08); ret = pcm1863_add_controls(adc); if (ret < 0) dev_warn(rtd->dev, "Failed to add pcm1863 controls: %d\n", ret); /* set GPIO2 to output, GPIO3 input */ snd_soc_component_write(adc, PCM186X_GPIO3_2_CTRL, 0x00); snd_soc_component_write(adc, PCM186X_GPIO3_2_DIR_CTRL, 0x04); if (leds_off) snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x00); else snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x40); if (digital_gain_0db_limit) { int ret; struct snd_soc_card *card = rtd->card; ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207); if (ret < 0) dev_warn(card->dev, "Failed to set volume limit: %d\n", ret); } return 0; } static int snd_rpi_hifiberry_dacplusadcpro_update_rate_den( struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component; /* only use DAC */ struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component); struct snd_ratnum *rats_no_pll; unsigned int num = 0, den = 0; int err; rats_no_pll = devm_kzalloc(rtd->dev, sizeof(*rats_no_pll), GFP_KERNEL); if (!rats_no_pll) return -ENOMEM; rats_no_pll->num = clk_get_rate(pcm512x->sclk) / 64; rats_no_pll->den_min = 1; rats_no_pll->den_max = 128; rats_no_pll->den_step = 1; err = snd_interval_ratnum(hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE), 1, rats_no_pll, &num, &den); if (err >= 0 && den) { params->rate_num = num; params->rate_den = den; } devm_kfree(rtd->dev, rats_no_pll); return 0; } static int snd_rpi_hifiberry_dacplusadcpro_hw_params( struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { int ret = 0; struct snd_soc_pcm_runtime *rtd = substream->private_data; int channels = params_channels(params); int width = 32; struct snd_soc_component *dac = asoc_rtd_to_codec(rtd, 0)->component; struct snd_soc_dai *dai = asoc_rtd_to_codec(rtd, 0); struct snd_soc_dai_driver *drv = dai->driver; const struct snd_soc_dai_ops *ops = drv->ops; if (snd_rpi_hifiberry_is_dacpro) { width = snd_pcm_format_physical_width(params_format(params)); snd_rpi_hifiberry_dacplusadcpro_set_sclk(dac, params_rate(params)); ret = snd_rpi_hifiberry_dacplusadcpro_update_rate_den( substream, params); if (ret) return ret; } ret = snd_soc_dai_set_bclk_ratio(asoc_rtd_to_cpu(rtd, 0), channels * width); if (ret) return ret; ret = snd_soc_dai_set_bclk_ratio(asoc_rtd_to_codec(rtd, 0), channels * width); if (ret) return ret; if (snd_rpi_hifiberry_is_dacpro && ops->hw_params) ret = ops->hw_params(substream, params, dai); return ret; } static int snd_rpi_hifiberry_dacplusadcpro_startup( struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_component *dac = asoc_rtd_to_codec(rtd, 0)->component; struct snd_soc_component *adc = asoc_rtd_to_codec(rtd, 1)->component; if (leds_off) return 0; /* switch on respective LED */ if (!substream->stream) snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08); else snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x40); return 0; } static void snd_rpi_hifiberry_dacplusadcpro_shutdown( struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_component *dac = asoc_rtd_to_codec(rtd, 0)->component; struct snd_soc_component *adc = asoc_rtd_to_codec(rtd, 1)->component; /* switch off respective LED */ if (!substream->stream) snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x00); else snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x00); } /* machine stream operations */ static struct snd_soc_ops snd_rpi_hifiberry_dacplusadcpro_ops = { .hw_params = snd_rpi_hifiberry_dacplusadcpro_hw_params, .startup = snd_rpi_hifiberry_dacplusadcpro_startup, .shutdown = snd_rpi_hifiberry_dacplusadcpro_shutdown, }; SND_SOC_DAILINK_DEFS(hifi, DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")), DAILINK_COMP_ARRAY(COMP_CODEC("pcm512x.1-004d", "pcm512x-hifi"), COMP_CODEC("pcm186x.1-004a", "pcm1863-aif")), DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0"))); static struct snd_soc_dai_link snd_rpi_hifiberry_dacplusadcpro_dai[] = { { .name = "HiFiBerry DAC+ADC PRO", .stream_name = "HiFiBerry DAC+ADC PRO HiFi", .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS, .ops = &snd_rpi_hifiberry_dacplusadcpro_ops, .init = snd_rpi_hifiberry_dacplusadcpro_init, SND_SOC_DAILINK_REG(hifi), }, }; /* aux device for optional headphone amp */ static struct snd_soc_aux_dev hifiberry_dacplusadcpro_aux_devs[] = { { .dlc = { .name = "tpa6130a2.1-0060", }, }, }; /* audio machine driver */ static struct snd_soc_card snd_rpi_hifiberry_dacplusadcpro = { .name = "snd_rpi_hifiberry_dacplusadcpro", .driver_name = "HifiberryDacpAdcPro", .owner = THIS_MODULE, .dai_link = snd_rpi_hifiberry_dacplusadcpro_dai, .num_links = ARRAY_SIZE(snd_rpi_hifiberry_dacplusadcpro_dai), }; static int hb_hp_detect(void) { struct i2c_adapter *adap = i2c_get_adapter(1); int ret; struct i2c_client tpa_i2c_client = { .addr = 0x60, .adapter = adap, }; if (!adap) return -EPROBE_DEFER; /* I2C module not yet available */ ret = i2c_smbus_read_byte(&tpa_i2c_client) >= 0; i2c_put_adapter(adap); return ret; }; static struct property tpa_enable_prop = { .name = "status", .length = 4 + 1, /* length 'okay' + 1 */ .value = "okay", }; static int snd_rpi_hifiberry_dacplusadcpro_probe(struct platform_device *pdev) { int ret = 0, i = 0; struct snd_soc_card *card = &snd_rpi_hifiberry_dacplusadcpro; struct device_node *tpa_node; struct property *tpa_prop; struct of_changeset ocs; int len; /* probe for head phone amp */ ret = hb_hp_detect(); if (ret < 0) return ret; if (ret) { card->aux_dev = hifiberry_dacplusadcpro_aux_devs; card->num_aux_devs = ARRAY_SIZE(hifiberry_dacplusadcpro_aux_devs); tpa_node = of_find_compatible_node(NULL, NULL, "ti,tpa6130a2"); tpa_prop = of_find_property(tpa_node, "status", &len); if (strcmp((char *)tpa_prop->value, "okay")) { /* and activate headphone using change_sets */ dev_info(&pdev->dev, "activating headphone amplifier"); of_changeset_init(&ocs); ret = of_changeset_update_property(&ocs, tpa_node, &tpa_enable_prop); if (ret) { dev_err(&pdev->dev, "cannot activate headphone amplifier\n"); return -ENODEV; } ret = of_changeset_apply(&ocs); if (ret) { dev_err(&pdev->dev, "cannot activate headphone amplifier\n"); return -ENODEV; } } } snd_rpi_hifiberry_dacplusadcpro.dev = &pdev->dev; if (pdev->dev.of_node) { struct device_node *i2s_node; struct snd_soc_dai_link *dai; dai = &snd_rpi_hifiberry_dacplusadcpro_dai[0]; i2s_node = of_parse_phandle(pdev->dev.of_node, "i2s-controller", 0); if (i2s_node) { for (i = 0; i < card->num_links; i++) { dai->cpus->dai_name = NULL; dai->cpus->of_node = i2s_node; dai->platforms->name = NULL; dai->platforms->of_node = i2s_node; } } } digital_gain_0db_limit = !of_property_read_bool( pdev->dev.of_node, "hifiberry-dacplusadcpro,24db_digital_gain"); slave = of_property_read_bool(pdev->dev.of_node, "hifiberry-dacplusadcpro,slave"); leds_off = of_property_read_bool(pdev->dev.of_node, "hifiberry-dacplusadcpro,leds_off"); ret = snd_soc_register_card(&snd_rpi_hifiberry_dacplusadcpro); if (ret && ret != -EPROBE_DEFER) dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret); return ret; } static const struct of_device_id snd_rpi_hifiberry_dacplusadcpro_of_match[] = { { .compatible = "hifiberry,hifiberry-dacplusadcpro", }, {}, }; MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dacplusadcpro_of_match); static struct platform_driver snd_rpi_hifiberry_dacplusadcpro_driver = { .driver = { .name = "snd-rpi-hifiberry-dacplusadcpro", .owner = THIS_MODULE, .of_match_table = snd_rpi_hifiberry_dacplusadcpro_of_match, }, .probe = snd_rpi_hifiberry_dacplusadcpro_probe, }; module_platform_driver(snd_rpi_hifiberry_dacplusadcpro_driver); MODULE_AUTHOR("Joerg Schambacher "); MODULE_AUTHOR("Daniel Matuschek "); MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+ADC"); MODULE_LICENSE("GPL v2");