sound/soc/mediatek/mt8173/mt8173-rt5650.c

   1 /*
   2  * mt8173-rt5650.c  --  MT8173 machine driver with RT5650 codecs
   3  *
   4  * Copyright (c) 2016 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 <linux/gpio.h>
  19 #include <linux/of_gpio.h>
  20 #include <sound/soc.h>
  21 #include <sound/jack.h>
  22 #include "../../codecs/rt5645.h"
  23
  24 #define MCLK_FOR_CODECS         12288000
  25
  26 enum mt8173_rt5650_mclk {
  27         MT8173_RT5650_MCLK_EXTERNAL = 0,
  28         MT8173_RT5650_MCLK_INTERNAL,
  29 };
  30
  31 struct mt8173_rt5650_platform_data {
  32         enum mt8173_rt5650_mclk pll_from;
  33         /* 0 = external oscillator; 1 = internal source from mt8173 */
  34 };
  35
  36 static struct mt8173_rt5650_platform_data mt8173_rt5650_priv = {
  37         .pll_from = MT8173_RT5650_MCLK_EXTERNAL,
  38 };
  39
  40 static const struct snd_soc_dapm_widget mt8173_rt5650_widgets[] = {
  41         SND_SOC_DAPM_SPK("Speaker", NULL),
  42         SND_SOC_DAPM_MIC("Int Mic", NULL),
  43         SND_SOC_DAPM_HP("Headphone", NULL),
  44         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  45 };
  46
  47 static const struct snd_soc_dapm_route mt8173_rt5650_routes[] = {
  48         {"Speaker", NULL, "SPOL"},
  49         {"Speaker", NULL, "SPOR"},
  50         {"DMIC L1", NULL, "Int Mic"},
  51         {"DMIC R1", NULL, "Int Mic"},
  52         {"Headphone", NULL, "HPOL"},
  53         {"Headphone", NULL, "HPOR"},
  54         {"Headset Mic", NULL, "micbias1"},
  55         {"Headset Mic", NULL, "micbias2"},
  56         {"IN1P", NULL, "Headset Mic"},
  57         {"IN1N", NULL, "Headset Mic"},
  58 };
  59
  60 static const struct snd_kcontrol_new mt8173_rt5650_controls[] = {
  61         SOC_DAPM_PIN_SWITCH("Speaker"),
  62         SOC_DAPM_PIN_SWITCH("Int Mic"),
  63         SOC_DAPM_PIN_SWITCH("Headphone"),
  64         SOC_DAPM_PIN_SWITCH("Headset Mic"),
  65 };
  66
  67 static int mt8173_rt5650_hw_params(struct snd_pcm_substream *substream,
  68                                    struct snd_pcm_hw_params *params)
  69 {
  70         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  71         unsigned int mclk_clock;
  72         int i, ret;
  73
  74         switch (mt8173_rt5650_priv.pll_from) {
  75         case MT8173_RT5650_MCLK_EXTERNAL:
  76                 /* mclk = 12.288M */
  77                 mclk_clock = MCLK_FOR_CODECS;
  78                 break;
  79         case MT8173_RT5650_MCLK_INTERNAL:
  80                 /* mclk = sampling rate*256 */
  81                 mclk_clock = params_rate(params) * 256;
  82                 break;
  83         default:
  84                 /* mclk = 12.288M */
  85                 mclk_clock = MCLK_FOR_CODECS;
  86                 break;
  87         }
  88
  89         for (i = 0; i < rtd->num_codecs; i++) {
  90                 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
  91
  92                 /* pll from mclk */
  93                 ret = snd_soc_dai_set_pll(codec_dai, 0, 0, mclk_clock,
  94                                           params_rate(params) * 512);
  95                 if (ret)
  96                         return ret;
  97
  98                 /* sysclk from pll */
  99                 ret = snd_soc_dai_set_sysclk(codec_dai, 1,
 100                                              params_rate(params) * 512,
 101                                              SND_SOC_CLOCK_IN);
 102                 if (ret)
 103                         return ret;
 104         }
 105         return 0;
 106 }
 107
 108 static struct snd_soc_ops mt8173_rt5650_ops = {
 109         .hw_params = mt8173_rt5650_hw_params,
 110 };
 111
 112 static struct snd_soc_jack mt8173_rt5650_jack;
 113
 114 static int mt8173_rt5650_init(struct snd_soc_pcm_runtime *runtime)
 115 {
 116         struct snd_soc_card *card = runtime->card;
 117         struct snd_soc_codec *codec = runtime->codec_dais[0]->codec;
 118         const char *codec_capture_dai = runtime->codec_dais[1]->name;
 119         int ret;
 120
 121         rt5645_sel_asrc_clk_src(codec,
 122                                 RT5645_DA_STEREO_FILTER,
 123                                 RT5645_CLK_SEL_I2S1_ASRC);
 124
 125         if (!strcmp(codec_capture_dai, "rt5645-aif1")) {
 126                 rt5645_sel_asrc_clk_src(codec,
 127                                         RT5645_AD_STEREO_FILTER,
 128                                         RT5645_CLK_SEL_I2S1_ASRC);
 129         } else if (!strcmp(codec_capture_dai, "rt5645-aif2")) {
 130                 rt5645_sel_asrc_clk_src(codec,
 131                                         RT5645_AD_STEREO_FILTER,
 132                                         RT5645_CLK_SEL_I2S2_ASRC);
 133         } else {
 134                 dev_warn(card->dev,
 135                          "Only one dai codec found in DTS, enabled rt5645 AD filter\n");
 136                 rt5645_sel_asrc_clk_src(codec,
 137                                         RT5645_AD_STEREO_FILTER,
 138                                         RT5645_CLK_SEL_I2S1_ASRC);
 139         }
 140
 141         /* enable jack detection */
 142         ret = snd_soc_card_jack_new(card, "Headset Jack",
 143                                     SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
 144                                     SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 145                                     SND_JACK_BTN_2 | SND_JACK_BTN_3,
 146                                     &mt8173_rt5650_jack, NULL, 0);
 147         if (ret) {
 148                 dev_err(card->dev, "Can't new Headset Jack %d\n", ret);
 149                 return ret;
 150         }
 151
 152         return rt5645_set_jack_detect(codec,
 153                                       &mt8173_rt5650_jack,
 154                                       &mt8173_rt5650_jack,
 155                                       &mt8173_rt5650_jack);
 156 }
 157
 158 static struct snd_soc_dai_link_component mt8173_rt5650_codecs[] = {
 159         {
 160                 /* Playback */
 161                 .dai_name = "rt5645-aif1",
 162         },
 163         {
 164                 /* Capture */
 165                 .dai_name = "rt5645-aif1",
 166         },
 167 };
 168
 169 enum {
 170         DAI_LINK_PLAYBACK,
 171         DAI_LINK_CAPTURE,
 172         DAI_LINK_CODEC_I2S,
 173 };
 174
 175 /* Digital audio interface glue - connects codec <---> CPU */
 176 static struct snd_soc_dai_link mt8173_rt5650_dais[] = {
 177         /* Front End DAI links */
 178         [DAI_LINK_PLAYBACK] = {
 179                 .name = "rt5650 Playback",
 180                 .stream_name = "rt5650 Playback",
 181                 .cpu_dai_name = "DL1",
 182                 .codec_name = "snd-soc-dummy",
 183                 .codec_dai_name = "snd-soc-dummy-dai",
 184                 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 185                 .dynamic = 1,
 186                 .dpcm_playback = 1,
 187         },
 188         [DAI_LINK_CAPTURE] = {
 189                 .name = "rt5650 Capture",
 190                 .stream_name = "rt5650 Capture",
 191                 .cpu_dai_name = "VUL",
 192                 .codec_name = "snd-soc-dummy",
 193                 .codec_dai_name = "snd-soc-dummy-dai",
 194                 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 195                 .dynamic = 1,
 196                 .dpcm_capture = 1,
 197         },
 198         /* Back End DAI links */
 199         [DAI_LINK_CODEC_I2S] = {
 200                 .name = "Codec",
 201                 .cpu_dai_name = "I2S",
 202                 .no_pcm = 1,
 203                 .codecs = mt8173_rt5650_codecs,
 204                 .num_codecs = 2,
 205                 .init = mt8173_rt5650_init,
 206                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 207                            SND_SOC_DAIFMT_CBS_CFS,
 208                 .ops = &mt8173_rt5650_ops,
 209                 .ignore_pmdown_time = 1,
 210                 .dpcm_playback = 1,
 211                 .dpcm_capture = 1,
 212         },
 213 };
 214
 215 static struct snd_soc_card mt8173_rt5650_card = {
 216         .name = "mtk-rt5650",
 217         .owner = THIS_MODULE,
 218         .dai_link = mt8173_rt5650_dais,
 219         .num_links = ARRAY_SIZE(mt8173_rt5650_dais),
 220         .controls = mt8173_rt5650_controls,
 221         .num_controls = ARRAY_SIZE(mt8173_rt5650_controls),
 222         .dapm_widgets = mt8173_rt5650_widgets,
 223         .num_dapm_widgets = ARRAY_SIZE(mt8173_rt5650_widgets),
 224         .dapm_routes = mt8173_rt5650_routes,
 225         .num_dapm_routes = ARRAY_SIZE(mt8173_rt5650_routes),
 226 };
 227
 228 static int mt8173_rt5650_dev_probe(struct platform_device *pdev)
 229 {
 230         struct snd_soc_card *card = &mt8173_rt5650_card;
 231         struct device_node *platform_node;
 232         struct device_node *np;
 233         const char *codec_capture_dai;
 234         int i, ret;
 235
 236         platform_node = of_parse_phandle(pdev->dev.of_node,
 237                                          "mediatek,platform", 0);
 238         if (!platform_node) {
 239                 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
 240                 return -EINVAL;
 241         }
 242
 243         for (i = 0; i < card->num_links; i++) {
 244                 if (mt8173_rt5650_dais[i].platform_name)
 245                         continue;
 246                 mt8173_rt5650_dais[i].platform_of_node = platform_node;
 247         }
 248
 249         mt8173_rt5650_codecs[0].of_node =
 250                 of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 0);
 251         if (!mt8173_rt5650_codecs[0].of_node) {
 252                 dev_err(&pdev->dev,
 253                         "Property 'audio-codec' missing or invalid\n");
 254                 return -EINVAL;
 255         }
 256         mt8173_rt5650_codecs[1].of_node = mt8173_rt5650_codecs[0].of_node;
 257
 258         if (of_find_node_by_name(platform_node, "codec-capture")) {
 259                 np = of_get_child_by_name(pdev->dev.of_node, "codec-capture");
 260                 if (!np) {
 261                         dev_err(&pdev->dev,
 262                                 "%s: Can't find codec-capture DT node\n",
 263                                 __func__);
 264                         return -EINVAL;
 265                 }
 266                 ret = snd_soc_of_get_dai_name(np, &codec_capture_dai);
 267                 if (ret < 0) {
 268                         dev_err(&pdev->dev,
 269                                 "%s codec_capture_dai name fail %d\n",
 270                                 __func__, ret);
 271                         return ret;
 272                 }
 273                 mt8173_rt5650_codecs[1].dai_name = codec_capture_dai;
 274         }
 275
 276         if (device_property_present(&pdev->dev, "mediatek,mclk")) {
 277                 ret = device_property_read_u32(&pdev->dev,
 278                                                "mediatek,mclk",
 279                                                &mt8173_rt5650_priv.pll_from);
 280                 if (ret) {
 281                         dev_err(&pdev->dev,
 282                                 "%s snd_soc_register_card fail %d\n",
 283                                 __func__, ret);
 284                 }
 285         }
 286
 287         card->dev = &pdev->dev;
 288         platform_set_drvdata(pdev, card);
 289
 290         ret = devm_snd_soc_register_card(&pdev->dev, card);
 291         if (ret)
 292                 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
 293                         __func__, ret);
 294         return ret;
 295 }
 296
 297 static const struct of_device_id mt8173_rt5650_dt_match[] = {
 298         { .compatible = "mediatek,mt8173-rt5650", },
 299         { }
 300 };
 301 MODULE_DEVICE_TABLE(of, mt8173_rt5650_dt_match);
 302
 303 static struct platform_driver mt8173_rt5650_driver = {
 304         .driver = {
 305                    .name = "mtk-rt5650",
 306                    .of_match_table = mt8173_rt5650_dt_match,
 307 #ifdef CONFIG_PM
 308                    .pm = &snd_soc_pm_ops,
 309 #endif
 310         },
 311         .probe = mt8173_rt5650_dev_probe,
 312 };
 313
 314 module_platform_driver(mt8173_rt5650_driver);
 315
 316 /* Module information */
 317 MODULE_DESCRIPTION("MT8173 RT5650 SoC machine driver");
 318 MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>");
 319 MODULE_LICENSE("GPL v2");
 320 MODULE_ALIAS("platform:mtk-rt5650");
 321