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 = substream->private_data; 56 struct snd_soc_dai *codec_dai = rtd->codec_dai; 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 = runtime->codec_dai->component; 71 72 /* enable jack detection */ 73 ret = snd_soc_card_jack_new(card, "Headphone", SND_JACK_HEADPHONE, 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 /* Digital audio interface glue - connects codec <---> CPU */ 86 static struct snd_soc_dai_link mt8173_max98090_dais[] = { 87 /* Front End DAI links */ 88 { 89 .name = "MAX98090 Playback", 90 .stream_name = "MAX98090 Playback", 91 .cpu_dai_name = "DL1", 92 .codec_name = "snd-soc-dummy", 93 .codec_dai_name = "snd-soc-dummy-dai", 94 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 95 .dynamic = 1, 96 .dpcm_playback = 1, 97 }, 98 { 99 .name = "MAX98090 Capture", 100 .stream_name = "MAX98090 Capture", 101 .cpu_dai_name = "VUL", 102 .codec_name = "snd-soc-dummy", 103 .codec_dai_name = "snd-soc-dummy-dai", 104 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 105 .dynamic = 1, 106 .dpcm_capture = 1, 107 }, 108 /* Back End DAI links */ 109 { 110 .name = "Codec", 111 .cpu_dai_name = "I2S", 112 .no_pcm = 1, 113 .codec_dai_name = "HiFi", 114 .init = mt8173_max98090_init, 115 .ops = &mt8173_max98090_ops, 116 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 117 SND_SOC_DAIFMT_CBS_CFS, 118 .dpcm_playback = 1, 119 .dpcm_capture = 1, 120 }, 121 }; 122 123 static struct snd_soc_card mt8173_max98090_card = { 124 .name = "mt8173-max98090", 125 .owner = THIS_MODULE, 126 .dai_link = mt8173_max98090_dais, 127 .num_links = ARRAY_SIZE(mt8173_max98090_dais), 128 .controls = mt8173_max98090_controls, 129 .num_controls = ARRAY_SIZE(mt8173_max98090_controls), 130 .dapm_widgets = mt8173_max98090_widgets, 131 .num_dapm_widgets = ARRAY_SIZE(mt8173_max98090_widgets), 132 .dapm_routes = mt8173_max98090_routes, 133 .num_dapm_routes = ARRAY_SIZE(mt8173_max98090_routes), 134 }; 135 136 static int mt8173_max98090_dev_probe(struct platform_device *pdev) 137 { 138 struct snd_soc_card *card = &mt8173_max98090_card; 139 struct device_node *codec_node, *platform_node; 140 struct snd_soc_dai_link *dai_link; 141 int ret, i; 142 143 platform_node = of_parse_phandle(pdev->dev.of_node, 144 "mediatek,platform", 0); 145 if (!platform_node) { 146 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n"); 147 return -EINVAL; 148 } 149 for_each_card_prelinks(card, i, dai_link) { 150 if (dai_link->platform_name) 151 continue; 152 dai_link->platform_of_node = platform_node; 153 } 154 155 codec_node = of_parse_phandle(pdev->dev.of_node, 156 "mediatek,audio-codec", 0); 157 if (!codec_node) { 158 dev_err(&pdev->dev, 159 "Property 'audio-codec' missing or invalid\n"); 160 return -EINVAL; 161 } 162 for_each_card_prelinks(card, i, dai_link) { 163 if (dai_link->codec_name) 164 continue; 165 dai_link->codec_of_node = codec_node; 166 } 167 card->dev = &pdev->dev; 168 169 ret = devm_snd_soc_register_card(&pdev->dev, card); 170 if (ret) 171 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", 172 __func__, ret); 173 return ret; 174 } 175 176 static const struct of_device_id mt8173_max98090_dt_match[] = { 177 { .compatible = "mediatek,mt8173-max98090", }, 178 { } 179 }; 180 MODULE_DEVICE_TABLE(of, mt8173_max98090_dt_match); 181 182 static struct platform_driver mt8173_max98090_driver = { 183 .driver = { 184 .name = "mt8173-max98090", 185 .of_match_table = mt8173_max98090_dt_match, 186 #ifdef CONFIG_PM 187 .pm = &snd_soc_pm_ops, 188 #endif 189 }, 190 .probe = mt8173_max98090_dev_probe, 191 }; 192 193 module_platform_driver(mt8173_max98090_driver); 194 195 /* Module information */ 196 MODULE_DESCRIPTION("MT8173 MAX98090 ALSA SoC machine driver"); 197 MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>"); 198 MODULE_LICENSE("GPL v2"); 199 MODULE_ALIAS("platform:mt8173-max98090"); 200 201