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         {"IN1P", NULL, "Headset Mic"},
  55         {"IN1N", NULL, "Headset Mic"},
  56 };
  57
  58 static const struct snd_kcontrol_new mt8173_rt5650_controls[] = {
  59         SOC_DAPM_PIN_SWITCH("Speaker"),
  60         SOC_DAPM_PIN_SWITCH("Int Mic"),
  61         SOC_DAPM_PIN_SWITCH("Headphone"),
  62         SOC_DAPM_PIN_SWITCH("Headset Mic"),
  63 };
  64
  65 static int mt8173_rt5650_hw_params(struct snd_pcm_substream *substream,
  66                                    struct snd_pcm_hw_params *params)
  67 {
  68         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  69         unsigned int mclk_clock;
  70         int i, ret;
  71
  72         switch (mt8173_rt5650_priv.pll_from) {
  73         case MT8173_RT5650_MCLK_EXTERNAL:
  74                 /* mclk = 12.288M */
  75                 mclk_clock = MCLK_FOR_CODECS;
  76                 break;
  77         case MT8173_RT5650_MCLK_INTERNAL:
  78                 /* mclk = sampling rate*256 */
  79                 mclk_clock = params_rate(params) * 256;
  80                 break;
  81         default:
  82                 /* mclk = 12.288M */
  83                 mclk_clock = MCLK_FOR_CODECS;
  84                 break;
  85         }
  86
  87         for (i = 0; i < rtd->num_codecs; i++) {
  88                 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
  89
  90                 /* pll from mclk */
  91                 ret = snd_soc_dai_set_pll(codec_dai, 0, 0, mclk_clock,
  92                                           params_rate(params) * 512);
  93                 if (ret)
  94                         return ret;
  95
  96                 /* sysclk from pll */
  97                 ret = snd_soc_dai_set_sysclk(codec_dai, 1,
  98                                              params_rate(params) * 512,
  99                                              SND_SOC_CLOCK_IN);
 100                 if (ret)
 101                         return ret;
 102         }
 103         return 0;
 104 }
 105
 106 static const struct snd_soc_ops mt8173_rt5650_ops = {
 107         .hw_params = mt8173_rt5650_hw_params,
 108 };
 109
 110 static struct snd_soc_jack mt8173_rt5650_jack;
 111
 112 static int mt8173_rt5650_init(struct snd_soc_pcm_runtime *runtime)
 113 {
 114         struct snd_soc_card *card = runtime->card;
 115         struct snd_soc_codec *codec = runtime->codec_dais[0]->codec;
 116         const char *codec_capture_dai = runtime->codec_dais[1]->name;
 117         int ret;
 118
 119         rt5645_sel_asrc_clk_src(codec,
 120                                 RT5645_DA_STEREO_FILTER,
 121                                 RT5645_CLK_SEL_I2S1_ASRC);
 122
 123         if (!strcmp(codec_capture_dai, "rt5645-aif1")) {
 124                 rt5645_sel_asrc_clk_src(codec,
 125                                         RT5645_AD_STEREO_FILTER,
 126                                         RT5645_CLK_SEL_I2S1_ASRC);
 127         } else if (!strcmp(codec_capture_dai, "rt5645-aif2")) {
 128                 rt5645_sel_asrc_clk_src(codec,
 129                                         RT5645_AD_STEREO_FILTER,
 130                                         RT5645_CLK_SEL_I2S2_ASRC);
 131         } else {
 132                 dev_warn(card->dev,
 133                          "Only one dai codec found in DTS, enabled rt5645 AD filter\n");
 134                 rt5645_sel_asrc_clk_src(codec,
 135                                         RT5645_AD_STEREO_FILTER,
 136                                         RT5645_CLK_SEL_I2S1_ASRC);
 137         }
 138
 139         /* enable jack detection */
 140         ret = snd_soc_card_jack_new(card, "Headset Jack",
 141                                     SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
 142                                     SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 143                                     SND_JACK_BTN_2 | SND_JACK_BTN_3,
 144                                     &mt8173_rt5650_jack, NULL, 0);
 145         if (ret) {
 146                 dev_err(card->dev, "Can't new Headset Jack %d\n", ret);
 147                 return ret;
 148         }
 149
 150         return rt5645_set_jack_detect(codec,
 151                                       &mt8173_rt5650_jack,
 152                                       &mt8173_rt5650_jack,
 153                                       &mt8173_rt5650_jack);
 154 }
 155
 156 static struct snd_soc_dai_link_component mt8173_rt5650_codecs[] = {
 157         {
 158                 /* Playback */
 159                 .dai_name = "rt5645-aif1",
 160         },
 161         {
 162                 /* Capture */
 163                 .dai_name = "rt5645-aif1",
 164         },
 165 };
 166
 167 enum {
 168         DAI_LINK_PLAYBACK,
 169         DAI_LINK_CAPTURE,
 170         DAI_LINK_HDMI,
 171         DAI_LINK_CODEC_I2S,
 172         DAI_LINK_HDMI_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         [DAI_LINK_HDMI] = {
 199                 .name = "HDMI",
 200                 .stream_name = "HDMI PCM",
 201                 .cpu_dai_name = "HDMI",
 202                 .codec_name = "snd-soc-dummy",
 203                 .codec_dai_name = "snd-soc-dummy-dai",
 204                 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 205                 .dynamic = 1,
 206                 .dpcm_playback = 1,
 207         },
 208         /* Back End DAI links */
 209         [DAI_LINK_CODEC_I2S] = {
 210                 .name = "Codec",
 211                 .cpu_dai_name = "I2S",
 212                 .no_pcm = 1,
 213                 .codecs = mt8173_rt5650_codecs,
 214                 .num_codecs = 2,
 215                 .init = mt8173_rt5650_init,
 216                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 217                            SND_SOC_DAIFMT_CBS_CFS,
 218                 .ops = &mt8173_rt5650_ops,
 219                 .ignore_pmdown_time = 1,
 220                 .dpcm_playback = 1,
 221                 .dpcm_capture = 1,
 222         },
 223         [DAI_LINK_HDMI_I2S] = {
 224                 .name = "HDMI BE",
 225                 .cpu_dai_name = "HDMIO",
 226                 .no_pcm = 1,
 227                 .codec_dai_name = "i2s-hifi",
 228                 .dpcm_playback = 1,
 229         },
 230 };
 231
 232 static struct snd_soc_card mt8173_rt5650_card = {
 233         .name = "mtk-rt5650",
 234         .owner = THIS_MODULE,
 235         .dai_link = mt8173_rt5650_dais,
 236         .num_links = ARRAY_SIZE(mt8173_rt5650_dais),
 237         .controls = mt8173_rt5650_controls,
 238         .num_controls = ARRAY_SIZE(mt8173_rt5650_controls),
 239         .dapm_widgets = mt8173_rt5650_widgets,
 240         .num_dapm_widgets = ARRAY_SIZE(mt8173_rt5650_widgets),
 241         .dapm_routes = mt8173_rt5650_routes,
 242         .num_dapm_routes = ARRAY_SIZE(mt8173_rt5650_routes),
 243 };
 244
 245 static int mt8173_rt5650_dev_probe(struct platform_device *pdev)
 246 {
 247         struct snd_soc_card *card = &mt8173_rt5650_card;
 248         struct device_node *platform_node;
 249         struct device_node *np;
 250         const char *codec_capture_dai;
 251         int i, ret;
 252
 253         platform_node = of_parse_phandle(pdev->dev.of_node,
 254                                          "mediatek,platform", 0);
 255         if (!platform_node) {
 256                 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
 257                 return -EINVAL;
 258         }
 259
 260         for (i = 0; i < card->num_links; i++) {
 261                 if (mt8173_rt5650_dais[i].platform_name)
 262                         continue;
 263                 mt8173_rt5650_dais[i].platform_of_node = platform_node;
 264         }
 265
 266         mt8173_rt5650_codecs[0].of_node =
 267                 of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 0);
 268         if (!mt8173_rt5650_codecs[0].of_node) {
 269                 dev_err(&pdev->dev,
 270                         "Property 'audio-codec' missing or invalid\n");
 271                 return -EINVAL;
 272         }
 273         mt8173_rt5650_codecs[1].of_node = mt8173_rt5650_codecs[0].of_node;
 274
 275         if (of_find_node_by_name(platform_node, "codec-capture")) {
 276                 np = of_get_child_by_name(pdev->dev.of_node, "codec-capture");
 277                 if (!np) {
 278                         dev_err(&pdev->dev,
 279                                 "%s: Can't find codec-capture DT node\n",
 280                                 __func__);
 281                         return -EINVAL;
 282                 }
 283                 ret = snd_soc_of_get_dai_name(np, &codec_capture_dai);
 284                 if (ret < 0) {
 285                         dev_err(&pdev->dev,
 286                                 "%s codec_capture_dai name fail %d\n",
 287                                 __func__, ret);
 288                         return ret;
 289                 }
 290                 mt8173_rt5650_codecs[1].dai_name = codec_capture_dai;
 291         }
 292
 293         if (device_property_present(&pdev->dev, "mediatek,mclk")) {
 294                 ret = device_property_read_u32(&pdev->dev,
 295                                                "mediatek,mclk",
 296                                                &mt8173_rt5650_priv.pll_from);
 297                 if (ret) {
 298                         dev_err(&pdev->dev,
 299                                 "%s snd_soc_register_card fail %d\n",
 300                                 __func__, ret);
 301                 }
 302         }
 303
 304         mt8173_rt5650_dais[DAI_LINK_HDMI_I2S].codec_of_node =
 305                 of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 1);
 306         if (!mt8173_rt5650_dais[DAI_LINK_HDMI_I2S].codec_of_node) {
 307                 dev_err(&pdev->dev,
 308                         "Property 'audio-codec' missing or invalid\n");
 309                 return -EINVAL;
 310         }
 311         card->dev = &pdev->dev;
 312
 313         ret = devm_snd_soc_register_card(&pdev->dev, card);
 314         if (ret)
 315                 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
 316                         __func__, ret);
 317         return ret;
 318 }
 319
 320 static const struct of_device_id mt8173_rt5650_dt_match[] = {
 321         { .compatible = "mediatek,mt8173-rt5650", },
 322         { }
 323 };
 324 MODULE_DEVICE_TABLE(of, mt8173_rt5650_dt_match);
 325
 326 static struct platform_driver mt8173_rt5650_driver = {
 327         .driver = {
 328                    .name = "mtk-rt5650",
 329                    .of_match_table = mt8173_rt5650_dt_match,
 330 #ifdef CONFIG_PM
 331                    .pm = &snd_soc_pm_ops,
 332 #endif
 333         },
 334         .probe = mt8173_rt5650_dev_probe,
 335 };
 336
 337 module_platform_driver(mt8173_rt5650_driver);
 338
 339 /* Module information */
 340 MODULE_DESCRIPTION("MT8173 RT5650 SoC machine driver");
 341 MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>");
 342 MODULE_LICENSE("GPL v2");
 343 MODULE_ALIAS("platform:mtk-rt5650");
 344