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 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, NULL, 0); 83 if (ret) { 84 dev_err(card->dev, "Can't snd_soc_jack_new %d\n", ret); 85 return ret; 86 } 87 88 ret = snd_soc_jack_add_pins(&mt8173_max98090_jack, 89 ARRAY_SIZE(mt8173_max98090_jack_pins), 90 mt8173_max98090_jack_pins); 91 if (ret) { 92 dev_err(card->dev, "Can't snd_soc_jack_add_pins %d\n", ret); 93 return ret; 94 } 95 96 return max98090_mic_detect(codec, &mt8173_max98090_jack); 97 } 98 99 /* Digital audio interface glue - connects codec <---> CPU */ 100 static struct snd_soc_dai_link mt8173_max98090_dais[] = { 101 /* Front End DAI links */ 102 { 103 .name = "MAX98090 Playback", 104 .stream_name = "MAX98090 Playback", 105 .cpu_dai_name = "DL1", 106 .codec_name = "snd-soc-dummy", 107 .codec_dai_name = "snd-soc-dummy-dai", 108 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 109 .dynamic = 1, 110 .dpcm_playback = 1, 111 }, 112 { 113 .name = "MAX98090 Capture", 114 .stream_name = "MAX98090 Capture", 115 .cpu_dai_name = "VUL", 116 .codec_name = "snd-soc-dummy", 117 .codec_dai_name = "snd-soc-dummy-dai", 118 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 119 .dynamic = 1, 120 .dpcm_capture = 1, 121 }, 122 /* Back End DAI links */ 123 { 124 .name = "Codec", 125 .cpu_dai_name = "I2S", 126 .no_pcm = 1, 127 .codec_dai_name = "HiFi", 128 .init = mt8173_max98090_init, 129 .ops = &mt8173_max98090_ops, 130 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 131 SND_SOC_DAIFMT_CBS_CFS, 132 .dpcm_playback = 1, 133 .dpcm_capture = 1, 134 }, 135 }; 136 137 static struct snd_soc_card mt8173_max98090_card = { 138 .name = "mt8173-max98090", 139 .owner = THIS_MODULE, 140 .dai_link = mt8173_max98090_dais, 141 .num_links = ARRAY_SIZE(mt8173_max98090_dais), 142 .controls = mt8173_max98090_controls, 143 .num_controls = ARRAY_SIZE(mt8173_max98090_controls), 144 .dapm_widgets = mt8173_max98090_widgets, 145 .num_dapm_widgets = ARRAY_SIZE(mt8173_max98090_widgets), 146 .dapm_routes = mt8173_max98090_routes, 147 .num_dapm_routes = ARRAY_SIZE(mt8173_max98090_routes), 148 }; 149 150 static int mt8173_max98090_dev_probe(struct platform_device *pdev) 151 { 152 struct snd_soc_card *card = &mt8173_max98090_card; 153 struct device_node *codec_node, *platform_node; 154 int ret, i; 155 156 platform_node = of_parse_phandle(pdev->dev.of_node, 157 "mediatek,platform", 0); 158 if (!platform_node) { 159 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n"); 160 return -EINVAL; 161 } 162 for (i = 0; i < card->num_links; i++) { 163 if (mt8173_max98090_dais[i].platform_name) 164 continue; 165 mt8173_max98090_dais[i].platform_of_node = platform_node; 166 } 167 168 codec_node = of_parse_phandle(pdev->dev.of_node, 169 "mediatek,audio-codec", 0); 170 if (!codec_node) { 171 dev_err(&pdev->dev, 172 "Property 'audio-codec' missing or invalid\n"); 173 return -EINVAL; 174 } 175 for (i = 0; i < card->num_links; i++) { 176 if (mt8173_max98090_dais[i].codec_name) 177 continue; 178 mt8173_max98090_dais[i].codec_of_node = codec_node; 179 } 180 card->dev = &pdev->dev; 181 182 ret = devm_snd_soc_register_card(&pdev->dev, card); 183 if (ret) 184 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", 185 __func__, ret); 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 #ifdef CONFIG_PM 200 .pm = &snd_soc_pm_ops, 201 #endif 202 }, 203 .probe = mt8173_max98090_dev_probe, 204 }; 205 206 module_platform_driver(mt8173_max98090_driver); 207 208 /* Module information */ 209 MODULE_DESCRIPTION("MT8173 MAX98090 ALSA SoC machine driver"); 210 MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>"); 211 MODULE_LICENSE("GPL v2"); 212 MODULE_ALIAS("platform:mt8173-max98090"); 213 214