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openwrt/target/linux/bcm27xx/patches-5.4/950-0276-adds-the-Hifiberry-DAC-ADC-PRO-version.patch
Álvaro Fernández Rojas f07e572f64 bcm27xx: import latest patches from the RPi foundation 
bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2021-02-18 23:42:32 +01:00

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From 41c059c841d40bebc358e1c9e7f30c62b2fe3b37 Mon Sep 17 00:00:00 2001
From: Joerg Schambacher <joscha@schambacher.com>
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 <stuart@hifiberry.com>
+ * Copyright 2014-2015
+ * based on code by Florian Meier <florian.meier@koalo.de>
+ * ADC added by Joerg Schambacher <joerg@i2audio.com>
+ * 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 <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/clk.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+#include <sound/tlv.h>
+
+#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 <joerg@i2audio.com>");
+MODULE_AUTHOR("Daniel Matuschek <daniel@hifiberry.com>");
+MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+ADC");
+MODULE_LICENSE("GPL v2");
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