// SPDX-License-Identifier: GPL-2.0 /* * mt2701-cs42448.c -- MT2701 CS42448 ALSA SoC machine driver * * Copyright (c) 2016 MediaTek Inc. * Author: Ir Lian * Garlic Tseng */ #include #include #include #include #include #include "mt2701-afe-common.h" struct mt2701_cs42448_private { int i2s1_in_mux; struct gpio_desc *i2s1_in_mux_sel_1; struct gpio_desc *i2s1_in_mux_sel_2; }; static const char * const i2sin_mux_switch_text[] = { "ADC_SDOUT2", "ADC_SDOUT3", "I2S_IN_1", "I2S_IN_2", }; static const struct soc_enum i2sin_mux_enum = SOC_ENUM_SINGLE_EXT(4, i2sin_mux_switch_text); static int mt2701_cs42448_i2sin1_mux_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); struct mt2701_cs42448_private *priv = snd_soc_card_get_drvdata(card); ucontrol->value.integer.value[0] = priv->i2s1_in_mux; return 0; } static int mt2701_cs42448_i2sin1_mux_set(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); struct mt2701_cs42448_private *priv = snd_soc_card_get_drvdata(card); if (ucontrol->value.integer.value[0] == priv->i2s1_in_mux) return 0; switch (ucontrol->value.integer.value[0]) { case 0: gpiod_set_value(priv->i2s1_in_mux_sel_1, 0); gpiod_set_value(priv->i2s1_in_mux_sel_2, 0); break; case 1: gpiod_set_value(priv->i2s1_in_mux_sel_1, 1); gpiod_set_value(priv->i2s1_in_mux_sel_2, 0); break; case 2: gpiod_set_value(priv->i2s1_in_mux_sel_1, 0); gpiod_set_value(priv->i2s1_in_mux_sel_2, 1); break; case 3: gpiod_set_value(priv->i2s1_in_mux_sel_1, 1); gpiod_set_value(priv->i2s1_in_mux_sel_2, 1); break; default: dev_warn(card->dev, "%s invalid setting\n", __func__); } priv->i2s1_in_mux = ucontrol->value.integer.value[0]; return 0; } static const struct snd_soc_dapm_widget mt2701_cs42448_asoc_card_dapm_widgets[] = { SND_SOC_DAPM_LINE("Line Out Jack", NULL), SND_SOC_DAPM_MIC("AMIC", NULL), SND_SOC_DAPM_LINE("Tuner In", NULL), SND_SOC_DAPM_LINE("Satellite Tuner In", NULL), SND_SOC_DAPM_LINE("AUX In", NULL), }; static const struct snd_kcontrol_new mt2701_cs42448_controls[] = { SOC_DAPM_PIN_SWITCH("Line Out Jack"), SOC_DAPM_PIN_SWITCH("AMIC"), SOC_DAPM_PIN_SWITCH("Tuner In"), SOC_DAPM_PIN_SWITCH("Satellite Tuner In"), SOC_DAPM_PIN_SWITCH("AUX In"), SOC_ENUM_EXT("I2SIN1_MUX_Switch", i2sin_mux_enum, mt2701_cs42448_i2sin1_mux_get, mt2701_cs42448_i2sin1_mux_set), }; static const unsigned int mt2701_cs42448_sampling_rates[] = {48000}; static const struct snd_pcm_hw_constraint_list mt2701_cs42448_constraints_rates = { .count = ARRAY_SIZE(mt2701_cs42448_sampling_rates), .list = mt2701_cs42448_sampling_rates, .mask = 0, }; static int mt2701_cs42448_fe_ops_startup(struct snd_pcm_substream *substream) { int err; err = snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &mt2701_cs42448_constraints_rates); if (err < 0) { dev_err(substream->pcm->card->dev, "%s snd_pcm_hw_constraint_list failed: 0x%x\n", __func__, err); return err; } return 0; } static const struct snd_soc_ops mt2701_cs42448_48k_fe_ops = { .startup = mt2701_cs42448_fe_ops_startup, }; static int mt2701_cs42448_be_ops_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0); unsigned int mclk_rate; unsigned int rate = params_rate(params); unsigned int div_mclk_over_bck = rate > 192000 ? 2 : 4; unsigned int div_bck_over_lrck = 64; mclk_rate = rate * div_bck_over_lrck * div_mclk_over_bck; /* mt2701 mclk */ snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT); /* codec mclk */ snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN); return 0; } static const struct snd_soc_ops mt2701_cs42448_be_ops = { .hw_params = mt2701_cs42448_be_ops_hw_params }; enum { DAI_LINK_FE_MULTI_CH_OUT, DAI_LINK_FE_PCM0_IN, DAI_LINK_FE_PCM1_IN, DAI_LINK_FE_BT_OUT, DAI_LINK_FE_BT_IN, DAI_LINK_BE_I2S0, DAI_LINK_BE_I2S1, DAI_LINK_BE_I2S2, DAI_LINK_BE_I2S3, DAI_LINK_BE_MRG_BT, }; SND_SOC_DAILINK_DEFS(fe_multi_ch_out, DAILINK_COMP_ARRAY(COMP_CPU("PCM_multi")), DAILINK_COMP_ARRAY(COMP_DUMMY()), DAILINK_COMP_ARRAY(COMP_EMPTY())); SND_SOC_DAILINK_DEFS(fe_pcm0_in, DAILINK_COMP_ARRAY(COMP_CPU("PCM0")), DAILINK_COMP_ARRAY(COMP_DUMMY()), DAILINK_COMP_ARRAY(COMP_EMPTY())); SND_SOC_DAILINK_DEFS(fe_pcm1_in, DAILINK_COMP_ARRAY(COMP_CPU("PCM1")), DAILINK_COMP_ARRAY(COMP_DUMMY()), DAILINK_COMP_ARRAY(COMP_EMPTY())); SND_SOC_DAILINK_DEFS(fe_bt_out, DAILINK_COMP_ARRAY(COMP_CPU("PCM_BT_DL")), DAILINK_COMP_ARRAY(COMP_DUMMY()), DAILINK_COMP_ARRAY(COMP_EMPTY())); SND_SOC_DAILINK_DEFS(fe_bt_in, DAILINK_COMP_ARRAY(COMP_CPU("PCM_BT_UL")), DAILINK_COMP_ARRAY(COMP_DUMMY()), DAILINK_COMP_ARRAY(COMP_EMPTY())); SND_SOC_DAILINK_DEFS(be_i2s0, DAILINK_COMP_ARRAY(COMP_CPU("I2S0")), DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")), DAILINK_COMP_ARRAY(COMP_EMPTY())); SND_SOC_DAILINK_DEFS(be_i2s1, DAILINK_COMP_ARRAY(COMP_CPU("I2S1")), DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")), DAILINK_COMP_ARRAY(COMP_EMPTY())); SND_SOC_DAILINK_DEFS(be_i2s2, DAILINK_COMP_ARRAY(COMP_CPU("I2S2")), DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")), DAILINK_COMP_ARRAY(COMP_EMPTY())); SND_SOC_DAILINK_DEFS(be_i2s3, DAILINK_COMP_ARRAY(COMP_CPU("I2S3")), DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")), DAILINK_COMP_ARRAY(COMP_EMPTY())); SND_SOC_DAILINK_DEFS(be_mrg_bt, DAILINK_COMP_ARRAY(COMP_CPU("MRG BT")), DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "bt-sco-pcm-wb")), DAILINK_COMP_ARRAY(COMP_EMPTY())); static struct snd_soc_dai_link mt2701_cs42448_dai_links[] = { /* FE */ [DAI_LINK_FE_MULTI_CH_OUT] = { .name = "mt2701-cs42448-multi-ch-out", .stream_name = "mt2701-cs42448-multi-ch-out", .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, .ops = &mt2701_cs42448_48k_fe_ops, .dynamic = 1, .playback_only = 1, SND_SOC_DAILINK_REG(fe_multi_ch_out), }, [DAI_LINK_FE_PCM0_IN] = { .name = "mt2701-cs42448-pcm0", .stream_name = "mt2701-cs42448-pcm0-data-UL", .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, .ops = &mt2701_cs42448_48k_fe_ops, .dynamic = 1, .capture_only = 1, SND_SOC_DAILINK_REG(fe_pcm0_in), }, [DAI_LINK_FE_PCM1_IN] = { .name = "mt2701-cs42448-pcm1-data-UL", .stream_name = "mt2701-cs42448-pcm1-data-UL", .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, .ops = &mt2701_cs42448_48k_fe_ops, .dynamic = 1, .capture_only = 1, SND_SOC_DAILINK_REG(fe_pcm1_in), }, [DAI_LINK_FE_BT_OUT] = { .name = "mt2701-cs42448-pcm-BT-out", .stream_name = "mt2701-cs42448-pcm-BT", .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, .dynamic = 1, .playback_only = 1, SND_SOC_DAILINK_REG(fe_bt_out), }, [DAI_LINK_FE_BT_IN] = { .name = "mt2701-cs42448-pcm-BT-in", .stream_name = "mt2701-cs42448-pcm-BT", .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, .dynamic = 1, .capture_only = 1, SND_SOC_DAILINK_REG(fe_bt_in), }, /* BE */ [DAI_LINK_BE_I2S0] = { .name = "mt2701-cs42448-I2S0", .no_pcm = 1, .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS | SND_SOC_DAIFMT_GATED, .ops = &mt2701_cs42448_be_ops, SND_SOC_DAILINK_REG(be_i2s0), }, [DAI_LINK_BE_I2S1] = { .name = "mt2701-cs42448-I2S1", .no_pcm = 1, .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS | SND_SOC_DAIFMT_GATED, .ops = &mt2701_cs42448_be_ops, SND_SOC_DAILINK_REG(be_i2s1), }, [DAI_LINK_BE_I2S2] = { .name = "mt2701-cs42448-I2S2", .no_pcm = 1, .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS | SND_SOC_DAIFMT_GATED, .ops = &mt2701_cs42448_be_ops, SND_SOC_DAILINK_REG(be_i2s2), }, [DAI_LINK_BE_I2S3] = { .name = "mt2701-cs42448-I2S3", .no_pcm = 1, .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS | SND_SOC_DAIFMT_GATED, .ops = &mt2701_cs42448_be_ops, SND_SOC_DAILINK_REG(be_i2s3), }, [DAI_LINK_BE_MRG_BT] = { .name = "mt2701-cs42448-MRG-BT", .no_pcm = 1, SND_SOC_DAILINK_REG(be_mrg_bt), }, }; static struct snd_soc_card mt2701_cs42448_soc_card = { .name = "mt2701-cs42448", .owner = THIS_MODULE, .dai_link = mt2701_cs42448_dai_links, .num_links = ARRAY_SIZE(mt2701_cs42448_dai_links), .controls = mt2701_cs42448_controls, .num_controls = ARRAY_SIZE(mt2701_cs42448_controls), .dapm_widgets = mt2701_cs42448_asoc_card_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(mt2701_cs42448_asoc_card_dapm_widgets), }; static int mt2701_cs42448_machine_probe(struct platform_device *pdev) { struct snd_soc_card *card = &mt2701_cs42448_soc_card; int ret; int i; struct device_node *platform_node, *codec_node, *codec_node_bt_mrg; struct device *dev = &pdev->dev; struct mt2701_cs42448_private *priv = devm_kzalloc(dev, sizeof(struct mt2701_cs42448_private), GFP_KERNEL); struct snd_soc_dai_link *dai_link; if (!priv) return -ENOMEM; platform_node = of_parse_phandle(pdev->dev.of_node, "mediatek,platform", 0); if (!platform_node) { dev_err(dev, "Property 'platform' missing or invalid\n"); return -EINVAL; } for_each_card_prelinks(card, i, dai_link) { if (dai_link->platforms->name) continue; dai_link->platforms->of_node = platform_node; } card->dev = dev; codec_node = of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 0); if (!codec_node) { dev_err(dev, "Property 'audio-codec' missing or invalid\n"); return -EINVAL; } for_each_card_prelinks(card, i, dai_link) { if (dai_link->codecs->name) continue; dai_link->codecs->of_node = codec_node; } codec_node_bt_mrg = of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec-bt-mrg", 0); if (!codec_node_bt_mrg) { dev_err(dev, "Property 'audio-codec-bt-mrg' missing or invalid\n"); return -EINVAL; } mt2701_cs42448_dai_links[DAI_LINK_BE_MRG_BT].codecs->of_node = codec_node_bt_mrg; ret = snd_soc_of_parse_audio_routing(card, "audio-routing"); if (ret) { dev_err(dev, "failed to parse audio-routing: %d\n", ret); return ret; } priv->i2s1_in_mux_sel_1 = devm_gpiod_get_optional(dev, "i2s1-in-sel-gpio1", GPIOD_OUT_LOW); if (IS_ERR(priv->i2s1_in_mux_sel_1)) return dev_err_probe(dev, PTR_ERR(priv->i2s1_in_mux_sel_1), "error getting mux 1 selector\n"); priv->i2s1_in_mux_sel_2 = devm_gpiod_get_optional(dev, "i2s1-in-sel-gpio2", GPIOD_OUT_LOW); if (IS_ERR(priv->i2s1_in_mux_sel_2)) return dev_err_probe(dev, PTR_ERR(priv->i2s1_in_mux_sel_2), "error getting mux 2 selector\n"); snd_soc_card_set_drvdata(card, priv); ret = devm_snd_soc_register_card(dev, card); if (ret) dev_err(dev, "%s snd_soc_register_card fail %d\n", __func__, ret); return ret; } #ifdef CONFIG_OF static const struct of_device_id mt2701_cs42448_machine_dt_match[] = { {.compatible = "mediatek,mt2701-cs42448-machine",}, {} }; MODULE_DEVICE_TABLE(of, mt2701_cs42448_machine_dt_match); #endif static struct platform_driver mt2701_cs42448_machine = { .driver = { .name = "mt2701-cs42448", #ifdef CONFIG_OF .of_match_table = mt2701_cs42448_machine_dt_match, #endif }, .probe = mt2701_cs42448_machine_probe, }; module_platform_driver(mt2701_cs42448_machine); /* Module information */ MODULE_DESCRIPTION("MT2701 CS42448 ALSA SoC machine driver"); MODULE_AUTHOR("Ir Lian "); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("mt2701 cs42448 soc card");