From 41c059c841d40bebc358e1c9e7f30c62b2fe3b37 Mon Sep 17 00:00:00 2001 From: Joerg Schambacher Date: Tue, 23 Jul 2019 16:57:35 +0200 Subject: [PATCH] adds the Hifiberry DAC+ADC PRO version This adds the driver for the DAC+ADC PRO version of the Hifiberry soundcard with software controlled PCM1863 ADC Signed-off-by: Joerg Schambacher joerg@i2audio.com --- sound/soc/bcm/Kconfig | 9 + sound/soc/bcm/Makefile | 2 + sound/soc/bcm/hifiberry_dacplusadcpro.c | 538 ++++++++++++++++++++++++ 3 files changed, 549 insertions(+) create mode 100644 sound/soc/bcm/hifiberry_dacplusadcpro.c --- a/sound/soc/bcm/Kconfig +++ b/sound/soc/bcm/Kconfig @@ -38,6 +38,7 @@ config SND_BCM2708_SOC_HIFIBERRY_DACPLUS tristate "Support for HifiBerry DAC+" depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S select SND_SOC_PCM512x + select COMMON_CLK_HIFIBERRY_DACPRO help Say Y or M if you want to add support for HifiBerry DAC+. @@ -50,6 +51,14 @@ config SND_BCM2708_SOC_HIFIBERRY_DACPLUS help Say Y or M if you want to add support for HifiBerry DAC+ADC. +config SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO + tristate "Support for HifiBerry DAC+ADC PRO" + depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S + select SND_SOC_PCM512x_I2C + select SND_SOC_PCM186X_I2C + help + Say Y or M if you want to add support for HifiBerry DAC+ADC PRO. + config SND_BCM2708_SOC_HIFIBERRY_DIGI tristate "Support for HifiBerry Digi" depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S --- a/sound/soc/bcm/Makefile +++ b/sound/soc/bcm/Makefile @@ -15,6 +15,7 @@ snd-soc-googlevoicehat-codec-objs := goo # BCM2708 Machine Support snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o snd-soc-hifiberry-dacplusadc-objs := hifiberry_dacplusadc.o +snd-soc-hifiberry-dacplusadcpro-objs := hifiberry_dacplusadcpro.o snd-soc-justboom-dac-objs := justboom-dac.o snd-soc-rpi-cirrus-objs := rpi-cirrus.o snd-soc-rpi-proto-objs := rpi-proto.o @@ -39,6 +40,7 @@ snd-soc-rpi-wm8804-soundcard-objs := rpi obj-$(CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD) += snd-soc-googlevoicehat-codec.o obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC) += snd-soc-hifiberry-dacplusadc.o +obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO) += snd-soc-hifiberry-dacplusadcpro.o obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o obj-$(CONFIG_SND_BCM2708_SOC_RPI_CIRRUS) += snd-soc-rpi-cirrus.o obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o --- /dev/null +++ b/sound/soc/bcm/hifiberry_dacplusadcpro.c @@ -0,0 +1,538 @@ +/* + * 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 added by Joerg Schambacher + * Copyright 2018-19 + * + * 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 "../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 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; + } +} + +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; + + snd_soc_component_read(component, PCM512x_RATE_DET_4, &sck); + return (!(sck & 0x40)); +} + +static bool snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep( + struct snd_soc_component *component) +{ + msleep(2); + return snd_rpi_hifiberry_dacplusadcpro_is_sclk(component); +} + +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_sleep(component); + + snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_NOCLOCK); + isNoClk = snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(component); + + snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_CLK48EN); + isClk48En = snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(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 = rtd->codec_dais[0]->component; + struct snd_soc_component *adc = rtd->codec_dais[1]->component; + struct snd_soc_dai_driver *adc_driver = rtd->codec_dais[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"; + + // set DAC DAI configuration + ret = snd_soc_dai_set_fmt(rtd->codec_dais[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(rtd->codec_dais[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(rtd->cpu_dai, + 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); + 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); + 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 = rtd->codec_dais[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 = rtd->codec_dais[0]->component; + + 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_tdm_slot(rtd->cpu_dai, 0x03, 0x03, + channels, width); + if (ret) + return ret; + ret = snd_soc_dai_set_tdm_slot(rtd->codec_dais[0], 0x03, 0x03, + channels, width); + if (ret) + return ret; + ret = snd_soc_dai_set_tdm_slot(rtd->codec_dais[1], 0x03, 0x03, + channels, width); + 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 = rtd->codec_dais[0]->component; + struct snd_soc_component *adc = rtd->codec_dais[1]->component; + + /* 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 = rtd->codec_dais[0]->component; + struct snd_soc_component *adc = rtd->codec_dais[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, +}; + +static struct snd_soc_dai_link_component snd_rpi_hifiberry_dacplusadcpro_codecs[] = { + { + .name = "pcm512x.1-004d", + .dai_name = "pcm512x-hifi", + }, + { + .name = "pcm186x.1-004a", + .dai_name = "pcm1863-aif", + }, +}; + +static struct snd_soc_dai_link snd_rpi_hifiberry_dacplusadcpro_dai[] = { +{ + .name = "HiFiBerry DAC+ADC PRO", + .stream_name = "HiFiBerry DAC+ADC PRO HiFi", + .cpu_dai_name = "bcm2708-i2s.0", + .platform_name = "bcm2708-i2s.0", + .codecs = snd_rpi_hifiberry_dacplusadcpro_codecs, + .num_codecs = 2, + .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, +}, +}; + +/* 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 snd_rpi_hifiberry_dacplusadcpro_probe(struct platform_device *pdev) +{ + int ret = 0, i = 0; + struct snd_soc_card *card = &snd_rpi_hifiberry_dacplusadcpro; + + 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->cpu_dai_name = NULL; + dai->cpu_of_node = i2s_node; + dai->platform_name = NULL; + dai->platform_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"); + 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");