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259 lines
7.5 KiB
259 lines
7.5 KiB
/* |
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* ASoC Driver for Dacberry400 soundcard |
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* Author: |
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* Ashish Vara<[email protected]> |
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* Copyright 2022 |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* version 2 as published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* General Public License for more details. |
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*/ |
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#include <linux/module.h> |
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#include <linux/gpio/consumer.h> |
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#include <linux/platform_device.h> |
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#include <sound/core.h> |
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#include <sound/pcm.h> |
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#include <sound/pcm_params.h> |
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#include <sound/soc.h> |
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#include <sound/jack.h> |
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#include <linux/i2c.h> |
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#include <linux/acpi.h> |
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#include <linux/slab.h> |
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#include "../sound/soc/codecs/tlv320aic3x.h" |
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static const struct snd_kcontrol_new dacberry400_controls[] = { |
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SOC_DAPM_PIN_SWITCH("MIC Jack"), |
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SOC_DAPM_PIN_SWITCH("Line In"), |
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SOC_DAPM_PIN_SWITCH("Line Out"), |
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SOC_DAPM_PIN_SWITCH("Headphone Jack"), |
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}; |
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static const struct snd_soc_dapm_widget dacberry400_widgets[] = { |
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SND_SOC_DAPM_HP("Headphone Jack", NULL), |
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SND_SOC_DAPM_MIC("MIC Jack", NULL), |
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SND_SOC_DAPM_LINE("Line In", NULL), |
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SND_SOC_DAPM_LINE("Line Out", NULL), |
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}; |
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static const struct snd_soc_dapm_route dacberry400_audio_map[] = { |
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{"Headphone Jack", NULL, "HPLOUT"}, |
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{"Headphone Jack", NULL, "HPROUT"}, |
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{"LINE1L", NULL, "Line In"}, |
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{"LINE1R", NULL, "Line In"}, |
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{"Line Out", NULL, "LLOUT"}, |
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{"Line Out", NULL, "RLOUT"}, |
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{"MIC3L", NULL, "MIC Jack"}, |
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{"MIC3R", NULL, "MIC Jack"}, |
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}; |
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static int snd_rpi_dacberry400_init(struct snd_soc_pcm_runtime *rtd) |
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{ |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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struct snd_soc_component *component = codec_dai->component; |
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int ret; |
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ret = snd_soc_dai_set_sysclk(codec_dai, 2, 12000000, |
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SND_SOC_CLOCK_OUT); |
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if (ret && ret != -ENOTSUPP) |
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goto err; |
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snd_soc_component_write(component, HPRCOM_CFG, 0x20); |
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snd_soc_component_write(component, DACL1_2_HPLOUT_VOL, 0x80); |
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snd_soc_component_write(component, DACR1_2_HPROUT_VOL, 0x80); |
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err: |
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return ret; |
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} |
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static int snd_rpi_dacberry400_set_bias_level(struct snd_soc_card *card, |
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struct snd_soc_dapm_context *dapm, enum snd_soc_bias_level level) |
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{ |
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struct snd_soc_pcm_runtime *rtd; |
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struct snd_soc_dai *codec_dai; |
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struct snd_soc_component *component; |
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struct dacberry_priv *aic3x; |
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u8 hpcom_reg = 0; |
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rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); |
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codec_dai = asoc_rtd_to_codec(rtd, 0); |
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component = codec_dai->component; |
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aic3x = snd_soc_component_get_drvdata(component); |
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if (dapm->dev != codec_dai->dev) |
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return 0; |
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switch (level) { |
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case SND_SOC_BIAS_PREPARE: |
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if (dapm->bias_level != SND_SOC_BIAS_STANDBY) |
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break; |
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/* UNMUTE ADC/DAC */ |
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hpcom_reg = snd_soc_component_read(component, HPLCOM_CFG); |
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snd_soc_component_write(component, HPLCOM_CFG, hpcom_reg | 0x20); |
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snd_soc_component_write(component, LINE1R_2_RADC_CTRL, 0x04); |
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snd_soc_component_write(component, LINE1L_2_LADC_CTRL, 0x04); |
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snd_soc_component_write(component, LADC_VOL, 0x00); |
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snd_soc_component_write(component, RADC_VOL, 0x00); |
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pr_info("%s: unmute ADC/DAC\n", __func__); |
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break; |
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case SND_SOC_BIAS_STANDBY: |
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if (dapm->bias_level != SND_SOC_BIAS_PREPARE) |
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break; |
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/* MUTE ADC/DAC */ |
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snd_soc_component_write(component, LDAC_VOL, 0x80); |
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snd_soc_component_write(component, RDAC_VOL, 0x80); |
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snd_soc_component_write(component, LADC_VOL, 0x80); |
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snd_soc_component_write(component, RADC_VOL, 0x80); |
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snd_soc_component_write(component, LINE1R_2_RADC_CTRL, 0x00); |
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snd_soc_component_write(component, LINE1L_2_LADC_CTRL, 0x00); |
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snd_soc_component_write(component, HPLCOM_CFG, 0x00); |
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pr_info("%s: mute ADC/DAC\n", __func__); |
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break; |
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default: |
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break; |
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} |
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return 0; |
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} |
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static int snd_rpi_dacberry400_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *params) |
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{ |
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int ret = 0; |
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u8 data; |
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struct snd_soc_pcm_runtime *rtd = substream->private_data; |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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struct snd_soc_component *component = codec_dai->component; |
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int fsref = (params_rate(params) % 11025 == 0) ? 44100 : 48000; |
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int channels = params_channels(params); |
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int width = 32; |
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u8 clock = 0; |
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data = (LDAC2LCH | RDAC2RCH); |
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data |= (fsref == 44100) ? FSREF_44100 : FSREF_48000; |
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if (params_rate(params) >= 64000) |
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data |= DUAL_RATE_MODE; |
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ret = snd_soc_component_write(component, 0x7, data); |
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width = params_width(params); |
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clock = snd_soc_component_read(component, 2); |
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ret = snd_soc_dai_set_bclk_ratio(cpu_dai, channels*width); |
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return ret; |
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} |
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static const struct snd_soc_ops snd_rpi_dacberry400_ops = { |
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.hw_params = snd_rpi_dacberry400_hw_params, |
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}; |
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SND_SOC_DAILINK_DEFS(rpi_dacberry400, |
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DAILINK_COMP_ARRAY(COMP_CPU("bcm2835-i2s.0")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x.1-0018", "tlv320aic3x-hifi")), |
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DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2835-i2s.0"))); |
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static struct snd_soc_dai_link snd_rpi_dacberry400_dai[] = { |
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{ |
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
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SND_SOC_DAIFMT_CBS_CFS, |
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.init = snd_rpi_dacberry400_init, |
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.ops = &snd_rpi_dacberry400_ops, |
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.symmetric_rate = 1, |
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SND_SOC_DAILINK_REG(rpi_dacberry400), |
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}, |
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}; |
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static struct snd_soc_card snd_rpi_dacberry400 = { |
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.owner = THIS_MODULE, |
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.dai_link = snd_rpi_dacberry400_dai, |
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.num_links = ARRAY_SIZE(snd_rpi_dacberry400_dai), |
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.controls = dacberry400_controls, |
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.num_controls = ARRAY_SIZE(dacberry400_controls), |
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.dapm_widgets = dacberry400_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(dacberry400_widgets), |
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.dapm_routes = dacberry400_audio_map, |
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.num_dapm_routes = ARRAY_SIZE(dacberry400_audio_map), |
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.set_bias_level = snd_rpi_dacberry400_set_bias_level, |
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}; |
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static int snd_rpi_dacberry400_probe(struct platform_device *pdev) |
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{ |
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int ret = 0; |
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snd_rpi_dacberry400.dev = &pdev->dev; |
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if (pdev->dev.of_node) { |
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struct device_node *i2s_node; |
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struct snd_soc_card *card = &snd_rpi_dacberry400; |
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struct snd_soc_dai_link *dai = &snd_rpi_dacberry400_dai[0]; |
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i2s_node = of_parse_phandle(pdev->dev.of_node, |
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"i2s-controller", 0); |
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if (i2s_node) { |
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dai->cpus->dai_name = NULL; |
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dai->cpus->of_node = i2s_node; |
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dai->platforms->name = NULL; |
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dai->platforms->of_node = i2s_node; |
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of_node_put(i2s_node); |
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} |
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if (of_property_read_string(pdev->dev.of_node, "card_name", |
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&card->name)) |
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card->name = "tlvaudioCODEC"; |
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if (of_property_read_string(pdev->dev.of_node, "dai_name", |
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&dai->name)) |
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dai->name = "tlvaudio CODEC"; |
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} |
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ret = snd_soc_register_card(&snd_rpi_dacberry400); |
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if (ret) { |
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if (ret != -EPROBE_DEFER) |
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dev_err(&pdev->dev, |
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"snd_soc_register_card() failed: %d\n", ret); |
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return ret; |
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} |
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return 0; |
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} |
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static int snd_rpi_dacberry400_remove(struct platform_device *pdev) |
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{ |
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snd_soc_unregister_card(&snd_rpi_dacberry400); |
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return 0; |
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} |
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static const struct of_device_id dacberry400_match_id[] = { |
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{ .compatible = "osaelectronics,dacberry400",}, |
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{}, |
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}; |
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MODULE_DEVICE_TABLE(of, dacberry400_match_id); |
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static struct platform_driver snd_rpi_dacberry400_driver = { |
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.driver = { |
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.name = "snd-rpi-dacberry400", |
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.owner = THIS_MODULE, |
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.of_match_table = dacberry400_match_id, |
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}, |
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.probe = snd_rpi_dacberry400_probe, |
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.remove = snd_rpi_dacberry400_remove, |
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}; |
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module_platform_driver(snd_rpi_dacberry400_driver); |
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MODULE_AUTHOR("Ashish Vara"); |
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MODULE_DESCRIPTION("Dacberry400 sound card driver"); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS("platform:dacberry400"); |
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MODULE_SOFTDEP("pre: snd-soc-tlv320aic3x");
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