/* * ASoC Driver for Dacberry400 soundcard * Author: * Ashish Vara * Copyright 2022 * * 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 "../sound/soc/codecs/tlv320aic3x.h" static const struct snd_kcontrol_new dacberry400_controls[] = { SOC_DAPM_PIN_SWITCH("MIC Jack"), SOC_DAPM_PIN_SWITCH("Line In"), SOC_DAPM_PIN_SWITCH("Line Out"), SOC_DAPM_PIN_SWITCH("Headphone Jack"), }; static const struct snd_soc_dapm_widget dacberry400_widgets[] = { SND_SOC_DAPM_HP("Headphone Jack", NULL), SND_SOC_DAPM_MIC("MIC Jack", NULL), SND_SOC_DAPM_LINE("Line In", NULL), SND_SOC_DAPM_LINE("Line Out", NULL), }; static const struct snd_soc_dapm_route dacberry400_audio_map[] = { {"Headphone Jack", NULL, "HPLOUT"}, {"Headphone Jack", NULL, "HPROUT"}, {"LINE1L", NULL, "Line In"}, {"LINE1R", NULL, "Line In"}, {"Line Out", NULL, "LLOUT"}, {"Line Out", NULL, "RLOUT"}, {"MIC3L", NULL, "MIC Jack"}, {"MIC3R", NULL, "MIC Jack"}, }; static int snd_rpi_dacberry400_init(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); struct snd_soc_component *component = codec_dai->component; int ret; ret = snd_soc_dai_set_sysclk(codec_dai, 2, 12000000, SND_SOC_CLOCK_OUT); if (ret && ret != -ENOTSUPP) goto err; snd_soc_component_write(component, HPRCOM_CFG, 0x20); snd_soc_component_write(component, DACL1_2_HPLOUT_VOL, 0x80); snd_soc_component_write(component, DACR1_2_HPROUT_VOL, 0x80); err: return ret; } static int snd_rpi_dacberry400_set_bias_level(struct snd_soc_card *card, struct snd_soc_dapm_context *dapm, enum snd_soc_bias_level level) { struct snd_soc_pcm_runtime *rtd; struct snd_soc_dai *codec_dai; struct snd_soc_component *component; struct dacberry_priv *aic3x; u8 hpcom_reg = 0; rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); codec_dai = asoc_rtd_to_codec(rtd, 0); component = codec_dai->component; aic3x = snd_soc_component_get_drvdata(component); if (dapm->dev != codec_dai->dev) return 0; switch (level) { case SND_SOC_BIAS_PREPARE: if (dapm->bias_level != SND_SOC_BIAS_STANDBY) break; /* UNMUTE ADC/DAC */ hpcom_reg = snd_soc_component_read(component, HPLCOM_CFG); snd_soc_component_write(component, HPLCOM_CFG, hpcom_reg | 0x20); snd_soc_component_write(component, LINE1R_2_RADC_CTRL, 0x04); snd_soc_component_write(component, LINE1L_2_LADC_CTRL, 0x04); snd_soc_component_write(component, LADC_VOL, 0x00); snd_soc_component_write(component, RADC_VOL, 0x00); pr_info("%s: unmute ADC/DAC\n", __func__); break; case SND_SOC_BIAS_STANDBY: if (dapm->bias_level != SND_SOC_BIAS_PREPARE) break; /* MUTE ADC/DAC */ snd_soc_component_write(component, LDAC_VOL, 0x80); snd_soc_component_write(component, RDAC_VOL, 0x80); snd_soc_component_write(component, LADC_VOL, 0x80); snd_soc_component_write(component, RADC_VOL, 0x80); snd_soc_component_write(component, LINE1R_2_RADC_CTRL, 0x00); snd_soc_component_write(component, LINE1L_2_LADC_CTRL, 0x00); snd_soc_component_write(component, HPLCOM_CFG, 0x00); pr_info("%s: mute ADC/DAC\n", __func__); break; default: break; } return 0; } static int snd_rpi_dacberry400_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { int ret = 0; u8 data; struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); struct snd_soc_component *component = codec_dai->component; int fsref = (params_rate(params) % 11025 == 0) ? 44100 : 48000; int channels = params_channels(params); int width = 32; u8 clock = 0; data = (LDAC2LCH | RDAC2RCH); data |= (fsref == 44100) ? FSREF_44100 : FSREF_48000; if (params_rate(params) >= 64000) data |= DUAL_RATE_MODE; ret = snd_soc_component_write(component, 0x7, data); width = params_width(params); clock = snd_soc_component_read(component, 2); ret = snd_soc_dai_set_bclk_ratio(cpu_dai, channels*width); return ret; } static const struct snd_soc_ops snd_rpi_dacberry400_ops = { .hw_params = snd_rpi_dacberry400_hw_params, }; SND_SOC_DAILINK_DEFS(rpi_dacberry400, DAILINK_COMP_ARRAY(COMP_CPU("bcm2835-i2s.0")), DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x.1-0018", "tlv320aic3x-hifi")), DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2835-i2s.0"))); static struct snd_soc_dai_link snd_rpi_dacberry400_dai[] = { { .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS, .init = snd_rpi_dacberry400_init, .ops = &snd_rpi_dacberry400_ops, .symmetric_rate = 1, SND_SOC_DAILINK_REG(rpi_dacberry400), }, }; static struct snd_soc_card snd_rpi_dacberry400 = { .owner = THIS_MODULE, .dai_link = snd_rpi_dacberry400_dai, .num_links = ARRAY_SIZE(snd_rpi_dacberry400_dai), .controls = dacberry400_controls, .num_controls = ARRAY_SIZE(dacberry400_controls), .dapm_widgets = dacberry400_widgets, .num_dapm_widgets = ARRAY_SIZE(dacberry400_widgets), .dapm_routes = dacberry400_audio_map, .num_dapm_routes = ARRAY_SIZE(dacberry400_audio_map), .set_bias_level = snd_rpi_dacberry400_set_bias_level, }; static int snd_rpi_dacberry400_probe(struct platform_device *pdev) { int ret = 0; snd_rpi_dacberry400.dev = &pdev->dev; if (pdev->dev.of_node) { struct device_node *i2s_node; struct snd_soc_card *card = &snd_rpi_dacberry400; struct snd_soc_dai_link *dai = &snd_rpi_dacberry400_dai[0]; i2s_node = of_parse_phandle(pdev->dev.of_node, "i2s-controller", 0); if (i2s_node) { dai->cpus->dai_name = NULL; dai->cpus->of_node = i2s_node; dai->platforms->name = NULL; dai->platforms->of_node = i2s_node; of_node_put(i2s_node); } if (of_property_read_string(pdev->dev.of_node, "card_name", &card->name)) card->name = "tlvaudioCODEC"; if (of_property_read_string(pdev->dev.of_node, "dai_name", &dai->name)) dai->name = "tlvaudio CODEC"; } ret = snd_soc_register_card(&snd_rpi_dacberry400); if (ret) { if (ret != -EPROBE_DEFER) dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret); return ret; } return 0; } static int snd_rpi_dacberry400_remove(struct platform_device *pdev) { snd_soc_unregister_card(&snd_rpi_dacberry400); return 0; } static const struct of_device_id dacberry400_match_id[] = { { .compatible = "osaelectronics,dacberry400",}, {}, }; MODULE_DEVICE_TABLE(of, dacberry400_match_id); static struct platform_driver snd_rpi_dacberry400_driver = { .driver = { .name = "snd-rpi-dacberry400", .owner = THIS_MODULE, .of_match_table = dacberry400_match_id, }, .probe = snd_rpi_dacberry400_probe, .remove = snd_rpi_dacberry400_remove, }; module_platform_driver(snd_rpi_dacberry400_driver); MODULE_AUTHOR("Ashish Vara"); MODULE_DESCRIPTION("Dacberry400 sound card driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:dacberry400"); MODULE_SOFTDEP("pre: snd-soc-tlv320aic3x");