1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * mt8173-max98090.c -- MT8173 MAX98090 ALSA SoC machine driver 4 * 5 * Copyright (c) 2015 MediaTek Inc. 6 * Author: Koro Chen <koro.chen@mediatek.com> 7 */ 8 9 #include <linux/module.h> 10 #include <sound/soc.h> 11 #include <sound/jack.h> 12 #include <linux/gpio.h> 13 #include "../../codecs/max98090.h" 14 15 static struct snd_soc_jack mt8173_max98090_jack; 16 17 static struct snd_soc_jack_pin mt8173_max98090_jack_pins[] = { 18 { 19 .pin = "Headphone", 20 .mask = SND_JACK_HEADPHONE, 21 }, 22 { 23 .pin = "Headset Mic", 24 .mask = SND_JACK_MICROPHONE, 25 }, 26 }; 27 28 static const struct snd_soc_dapm_widget mt8173_max98090_widgets[] = { 29 SND_SOC_DAPM_SPK("Speaker", NULL), 30 SND_SOC_DAPM_MIC("Int Mic", NULL), 31 SND_SOC_DAPM_HP("Headphone", NULL), 32 SND_SOC_DAPM_MIC("Headset Mic", NULL), 33 }; 34 35 static const struct snd_soc_dapm_route mt8173_max98090_routes[] = { 36 {"Speaker", NULL, "SPKL"}, 37 {"Speaker", NULL, "SPKR"}, 38 {"DMICL", NULL, "Int Mic"}, 39 {"Headphone", NULL, "HPL"}, 40 {"Headphone", NULL, "HPR"}, 41 {"Headset Mic", NULL, "MICBIAS"}, 42 {"IN34", NULL, "Headset Mic"}, 43 }; 44 45 static const struct snd_kcontrol_new mt8173_max98090_controls[] = { 46 SOC_DAPM_PIN_SWITCH("Speaker"), 47 SOC_DAPM_PIN_SWITCH("Int Mic"), 48 SOC_DAPM_PIN_SWITCH("Headphone"), 49 SOC_DAPM_PIN_SWITCH("Headset Mic"), 50 }; 51 52 static int mt8173_max98090_hw_params(struct snd_pcm_substream *substream, 53 struct snd_pcm_hw_params *params) 54 { 55 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 56 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 57 58 return snd_soc_dai_set_sysclk(codec_dai, 0, params_rate(params) * 256, 59 SND_SOC_CLOCK_IN); 60 } 61 62 static const struct snd_soc_ops mt8173_max98090_ops = { 63 .hw_params = mt8173_max98090_hw_params, 64 }; 65 66 static int mt8173_max98090_init(struct snd_soc_pcm_runtime *runtime) 67 { 68 int ret; 69 struct snd_soc_card *card = runtime->card; 70 struct snd_soc_component *component = asoc_rtd_to_codec(runtime, 0)->component; 71 72 /* enable jack detection */ 73 ret = snd_soc_card_jack_new_pins(card, "Headphone", SND_JACK_HEADSET, 74 &mt8173_max98090_jack, 75 mt8173_max98090_jack_pins, 76 ARRAY_SIZE(mt8173_max98090_jack_pins)); 77 if (ret) { 78 dev_err(card->dev, "Can't create a new Jack %d\n", ret); 79 return ret; 80 } 81 82 return max98090_mic_detect(component, &mt8173_max98090_jack); 83 } 84 85 SND_SOC_DAILINK_DEFS(playback, 86 DAILINK_COMP_ARRAY(COMP_CPU("DL1")), 87 DAILINK_COMP_ARRAY(COMP_DUMMY()), 88 DAILINK_COMP_ARRAY(COMP_EMPTY())); 89 90 SND_SOC_DAILINK_DEFS(capture, 91 DAILINK_COMP_ARRAY(COMP_CPU("VUL")), 92 DAILINK_COMP_ARRAY(COMP_DUMMY()), 93 DAILINK_COMP_ARRAY(COMP_EMPTY())); 94 95 SND_SOC_DAILINK_DEFS(hifi, 96 DAILINK_COMP_ARRAY(COMP_CPU("I2S")), 97 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "HiFi")), 98 DAILINK_COMP_ARRAY(COMP_EMPTY())); 99 100 /* Digital audio interface glue - connects codec <---> CPU */ 101 static struct snd_soc_dai_link mt8173_max98090_dais[] = { 102 /* Front End DAI links */ 103 { 104 .name = "MAX98090 Playback", 105 .stream_name = "MAX98090 Playback", 106 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 107 .dynamic = 1, 108 .dpcm_playback = 1, 109 SND_SOC_DAILINK_REG(playback), 110 }, 111 { 112 .name = "MAX98090 Capture", 113 .stream_name = "MAX98090 Capture", 114 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 115 .dynamic = 1, 116 .dpcm_capture = 1, 117 SND_SOC_DAILINK_REG(capture), 118 }, 119 /* Back End DAI links */ 120 { 121 .name = "Codec", 122 .no_pcm = 1, 123 .init = mt8173_max98090_init, 124 .ops = &mt8173_max98090_ops, 125 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 126 SND_SOC_DAIFMT_CBS_CFS, 127 .dpcm_playback = 1, 128 .dpcm_capture = 1, 129 SND_SOC_DAILINK_REG(hifi), 130 }, 131 }; 132 133 static struct snd_soc_card mt8173_max98090_card = { 134 .name = "mt8173-max98090", 135 .owner = THIS_MODULE, 136 .dai_link = mt8173_max98090_dais, 137 .num_links = ARRAY_SIZE(mt8173_max98090_dais), 138 .controls = mt8173_max98090_controls, 139 .num_controls = ARRAY_SIZE(mt8173_max98090_controls), 140 .dapm_widgets = mt8173_max98090_widgets, 141 .num_dapm_widgets = ARRAY_SIZE(mt8173_max98090_widgets), 142 .dapm_routes = mt8173_max98090_routes, 143 .num_dapm_routes = ARRAY_SIZE(mt8173_max98090_routes), 144 }; 145 146 static int mt8173_max98090_dev_probe(struct platform_device *pdev) 147 { 148 struct snd_soc_card *card = &mt8173_max98090_card; 149 struct device_node *codec_node, *platform_node; 150 struct snd_soc_dai_link *dai_link; 151 int ret, i; 152 153 platform_node = of_parse_phandle(pdev->dev.of_node, 154 "mediatek,platform", 0); 155 if (!platform_node) { 156 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n"); 157 return -EINVAL; 158 } 159 for_each_card_prelinks(card, i, dai_link) { 160 if (dai_link->platforms->name) 161 continue; 162 dai_link->platforms->of_node = platform_node; 163 } 164 165 codec_node = of_parse_phandle(pdev->dev.of_node, 166 "mediatek,audio-codec", 0); 167 if (!codec_node) { 168 dev_err(&pdev->dev, 169 "Property 'audio-codec' missing or invalid\n"); 170 ret = -EINVAL; 171 goto put_platform_node; 172 } 173 for_each_card_prelinks(card, i, dai_link) { 174 if (dai_link->codecs->name) 175 continue; 176 dai_link->codecs->of_node = codec_node; 177 } 178 card->dev = &pdev->dev; 179 180 ret = devm_snd_soc_register_card(&pdev->dev, card); 181 182 of_node_put(codec_node); 183 184 put_platform_node: 185 of_node_put(platform_node); 186 return ret; 187 } 188 189 static const struct of_device_id mt8173_max98090_dt_match[] = { 190 { .compatible = "mediatek,mt8173-max98090", }, 191 { } 192 }; 193 MODULE_DEVICE_TABLE(of, mt8173_max98090_dt_match); 194 195 static struct platform_driver mt8173_max98090_driver = { 196 .driver = { 197 .name = "mt8173-max98090", 198 .of_match_table = mt8173_max98090_dt_match, 199 .pm = &snd_soc_pm_ops, 200 }, 201 .probe = mt8173_max98090_dev_probe, 202 }; 203 204 module_platform_driver(mt8173_max98090_driver); 205 206 /* Module information */ 207 MODULE_DESCRIPTION("MT8173 MAX98090 ALSA SoC machine driver"); 208 MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>"); 209 MODULE_LICENSE("GPL v2"); 210 MODULE_ALIAS("platform:mt8173-max98090"); 211 212