1 /* 2 * mt8173-max98090.c -- MT8173 MAX98090 ALSA SoC machine driver 3 * 4 * Copyright (c) 2015 MediaTek Inc. 5 * Author: Koro Chen <koro.chen@mediatek.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 and 9 * only version 2 as published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 */ 16 17 #include <linux/module.h> 18 #include <sound/soc.h> 19 #include <sound/jack.h> 20 #include <linux/gpio.h> 21 #include "../../codecs/max98090.h" 22 23 static struct snd_soc_jack mt8173_max98090_jack; 24 25 static struct snd_soc_jack_pin mt8173_max98090_jack_pins[] = { 26 { 27 .pin = "Headphone", 28 .mask = SND_JACK_HEADPHONE, 29 }, 30 { 31 .pin = "Headset Mic", 32 .mask = SND_JACK_MICROPHONE, 33 }, 34 }; 35 36 static const struct snd_soc_dapm_widget mt8173_max98090_widgets[] = { 37 SND_SOC_DAPM_SPK("Speaker", NULL), 38 SND_SOC_DAPM_MIC("Int Mic", NULL), 39 SND_SOC_DAPM_HP("Headphone", NULL), 40 SND_SOC_DAPM_MIC("Headset Mic", NULL), 41 }; 42 43 static const struct snd_soc_dapm_route mt8173_max98090_routes[] = { 44 {"Speaker", NULL, "SPKL"}, 45 {"Speaker", NULL, "SPKR"}, 46 {"DMICL", NULL, "Int Mic"}, 47 {"Headphone", NULL, "HPL"}, 48 {"Headphone", NULL, "HPR"}, 49 {"Headset Mic", NULL, "MICBIAS"}, 50 {"IN34", NULL, "Headset Mic"}, 51 }; 52 53 static const struct snd_kcontrol_new mt8173_max98090_controls[] = { 54 SOC_DAPM_PIN_SWITCH("Speaker"), 55 SOC_DAPM_PIN_SWITCH("Int Mic"), 56 SOC_DAPM_PIN_SWITCH("Headphone"), 57 SOC_DAPM_PIN_SWITCH("Headset Mic"), 58 }; 59 60 static int mt8173_max98090_hw_params(struct snd_pcm_substream *substream, 61 struct snd_pcm_hw_params *params) 62 { 63 struct snd_soc_pcm_runtime *rtd = substream->private_data; 64 struct snd_soc_dai *codec_dai = rtd->codec_dai; 65 66 return snd_soc_dai_set_sysclk(codec_dai, 0, params_rate(params) * 256, 67 SND_SOC_CLOCK_IN); 68 } 69 70 static const struct snd_soc_ops mt8173_max98090_ops = { 71 .hw_params = mt8173_max98090_hw_params, 72 }; 73 74 static int mt8173_max98090_init(struct snd_soc_pcm_runtime *runtime) 75 { 76 int ret; 77 struct snd_soc_card *card = runtime->card; 78 struct snd_soc_codec *codec = runtime->codec; 79 80 /* enable jack detection */ 81 ret = snd_soc_card_jack_new(card, "Headphone", SND_JACK_HEADPHONE, 82 &mt8173_max98090_jack, 83 mt8173_max98090_jack_pins, 84 ARRAY_SIZE(mt8173_max98090_jack_pins)); 85 if (ret) { 86 dev_err(card->dev, "Can't create a new Jack %d\n", ret); 87 return ret; 88 } 89 90 return max98090_mic_detect(codec, &mt8173_max98090_jack); 91 } 92 93 /* Digital audio interface glue - connects codec <---> CPU */ 94 static struct snd_soc_dai_link mt8173_max98090_dais[] = { 95 /* Front End DAI links */ 96 { 97 .name = "MAX98090 Playback", 98 .stream_name = "MAX98090 Playback", 99 .cpu_dai_name = "DL1", 100 .codec_name = "snd-soc-dummy", 101 .codec_dai_name = "snd-soc-dummy-dai", 102 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 103 .dynamic = 1, 104 .dpcm_playback = 1, 105 }, 106 { 107 .name = "MAX98090 Capture", 108 .stream_name = "MAX98090 Capture", 109 .cpu_dai_name = "VUL", 110 .codec_name = "snd-soc-dummy", 111 .codec_dai_name = "snd-soc-dummy-dai", 112 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 113 .dynamic = 1, 114 .dpcm_capture = 1, 115 }, 116 /* Back End DAI links */ 117 { 118 .name = "Codec", 119 .cpu_dai_name = "I2S", 120 .no_pcm = 1, 121 .codec_dai_name = "HiFi", 122 .init = mt8173_max98090_init, 123 .ops = &mt8173_max98090_ops, 124 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 125 SND_SOC_DAIFMT_CBS_CFS, 126 .dpcm_playback = 1, 127 .dpcm_capture = 1, 128 }, 129 }; 130 131 static struct snd_soc_card mt8173_max98090_card = { 132 .name = "mt8173-max98090", 133 .owner = THIS_MODULE, 134 .dai_link = mt8173_max98090_dais, 135 .num_links = ARRAY_SIZE(mt8173_max98090_dais), 136 .controls = mt8173_max98090_controls, 137 .num_controls = ARRAY_SIZE(mt8173_max98090_controls), 138 .dapm_widgets = mt8173_max98090_widgets, 139 .num_dapm_widgets = ARRAY_SIZE(mt8173_max98090_widgets), 140 .dapm_routes = mt8173_max98090_routes, 141 .num_dapm_routes = ARRAY_SIZE(mt8173_max98090_routes), 142 }; 143 144 static int mt8173_max98090_dev_probe(struct platform_device *pdev) 145 { 146 struct snd_soc_card *card = &mt8173_max98090_card; 147 struct device_node *codec_node, *platform_node; 148 int ret, i; 149 150 platform_node = of_parse_phandle(pdev->dev.of_node, 151 "mediatek,platform", 0); 152 if (!platform_node) { 153 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n"); 154 return -EINVAL; 155 } 156 for (i = 0; i < card->num_links; i++) { 157 if (mt8173_max98090_dais[i].platform_name) 158 continue; 159 mt8173_max98090_dais[i].platform_of_node = platform_node; 160 } 161 162 codec_node = of_parse_phandle(pdev->dev.of_node, 163 "mediatek,audio-codec", 0); 164 if (!codec_node) { 165 dev_err(&pdev->dev, 166 "Property 'audio-codec' missing or invalid\n"); 167 return -EINVAL; 168 } 169 for (i = 0; i < card->num_links; i++) { 170 if (mt8173_max98090_dais[i].codec_name) 171 continue; 172 mt8173_max98090_dais[i].codec_of_node = codec_node; 173 } 174 card->dev = &pdev->dev; 175 176 ret = devm_snd_soc_register_card(&pdev->dev, card); 177 if (ret) 178 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", 179 __func__, ret); 180 return ret; 181 } 182 183 static const struct of_device_id mt8173_max98090_dt_match[] = { 184 { .compatible = "mediatek,mt8173-max98090", }, 185 { } 186 }; 187 MODULE_DEVICE_TABLE(of, mt8173_max98090_dt_match); 188 189 static struct platform_driver mt8173_max98090_driver = { 190 .driver = { 191 .name = "mt8173-max98090", 192 .of_match_table = mt8173_max98090_dt_match, 193 #ifdef CONFIG_PM 194 .pm = &snd_soc_pm_ops, 195 #endif 196 }, 197 .probe = mt8173_max98090_dev_probe, 198 }; 199 200 module_platform_driver(mt8173_max98090_driver); 201 202 /* Module information */ 203 MODULE_DESCRIPTION("MT8173 MAX98090 ALSA SoC machine driver"); 204 MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>"); 205 MODULE_LICENSE("GPL v2"); 206 MODULE_ALIAS("platform:mt8173-max98090"); 207 208