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

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * mt8173-rt5650.c  --  MT8173 machine driver with RT5650 codecs
   4  *
   5  * Copyright (c) 2016 MediaTek Inc.
   6  * Author: Koro Chen <koro.chen@mediatek.com>
   7  */
   8
   9 #include <linux/module.h>
  10 #include <linux/gpio.h>
  11 #include <linux/of_gpio.h>
  12 #include <sound/soc.h>
  13 #include <sound/jack.h>
  14 #include "../../codecs/rt5645.h"
  15
  16 #define MCLK_FOR_CODECS         12288000
  17
  18 enum mt8173_rt5650_mclk {
  19         MT8173_RT5650_MCLK_EXTERNAL = 0,
  20         MT8173_RT5650_MCLK_INTERNAL,
  21 };
  22
  23 struct mt8173_rt5650_platform_data {
  24         enum mt8173_rt5650_mclk pll_from;
  25         /* 0 = external oscillator; 1 = internal source from mt8173 */
  26 };
  27
  28 static struct mt8173_rt5650_platform_data mt8173_rt5650_priv = {
  29         .pll_from = MT8173_RT5650_MCLK_EXTERNAL,
  30 };
  31
  32 static const struct snd_soc_dapm_widget mt8173_rt5650_widgets[] = {
  33         SND_SOC_DAPM_SPK("Speaker", NULL),
  34         SND_SOC_DAPM_MIC("Int Mic", NULL),
  35         SND_SOC_DAPM_HP("Headphone", NULL),
  36         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  37 };
  38
  39 static const struct snd_soc_dapm_route mt8173_rt5650_routes[] = {
  40         {"Speaker", NULL, "SPOL"},
  41         {"Speaker", NULL, "SPOR"},
  42         {"DMIC L1", NULL, "Int Mic"},
  43         {"DMIC R1", NULL, "Int Mic"},
  44         {"Headphone", NULL, "HPOL"},
  45         {"Headphone", NULL, "HPOR"},
  46         {"IN1P", NULL, "Headset Mic"},
  47         {"IN1N", NULL, "Headset Mic"},
  48 };
  49
  50 static const struct snd_kcontrol_new mt8173_rt5650_controls[] = {
  51         SOC_DAPM_PIN_SWITCH("Speaker"),
  52         SOC_DAPM_PIN_SWITCH("Int Mic"),
  53         SOC_DAPM_PIN_SWITCH("Headphone"),
  54         SOC_DAPM_PIN_SWITCH("Headset Mic"),
  55 };
  56
  57 static int mt8173_rt5650_hw_params(struct snd_pcm_substream *substream,
  58                                    struct snd_pcm_hw_params *params)
  59 {
  60         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  61         unsigned int mclk_clock;
  62         int i, ret;
  63
  64         switch (mt8173_rt5650_priv.pll_from) {
  65         case MT8173_RT5650_MCLK_EXTERNAL:
  66                 /* mclk = 12.288M */
  67                 mclk_clock = MCLK_FOR_CODECS;
  68                 break;
  69         case MT8173_RT5650_MCLK_INTERNAL:
  70                 /* mclk = sampling rate*256 */
  71                 mclk_clock = params_rate(params) * 256;
  72                 break;
  73         default:
  74                 /* mclk = 12.288M */
  75                 mclk_clock = MCLK_FOR_CODECS;
  76                 break;
  77         }
  78
  79         for (i = 0; i < rtd->num_codecs; i++) {
  80                 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
  81
  82                 /* pll from mclk */
  83                 ret = snd_soc_dai_set_pll(codec_dai, 0, 0, mclk_clock,
  84                                           params_rate(params) * 512);
  85                 if (ret)
  86                         return ret;
  87
  88                 /* sysclk from pll */
  89                 ret = snd_soc_dai_set_sysclk(codec_dai, 1,
  90                                              params_rate(params) * 512,
  91                                              SND_SOC_CLOCK_IN);
  92                 if (ret)
  93                         return ret;
  94         }
  95         return 0;
  96 }
  97
  98 static const struct snd_soc_ops mt8173_rt5650_ops = {
  99         .hw_params = mt8173_rt5650_hw_params,
 100 };
 101
 102 static struct snd_soc_jack mt8173_rt5650_jack;
 103
 104 static int mt8173_rt5650_init(struct snd_soc_pcm_runtime *runtime)
 105 {
 106         struct snd_soc_card *card = runtime->card;
 107         struct snd_soc_component *component = runtime->codec_dais[0]->component;
 108         const char *codec_capture_dai = runtime->codec_dais[1]->name;
 109         int ret;
 110
 111         rt5645_sel_asrc_clk_src(component,
 112                                 RT5645_DA_STEREO_FILTER,
 113                                 RT5645_CLK_SEL_I2S1_ASRC);
 114
 115         if (!strcmp(codec_capture_dai, "rt5645-aif1")) {
 116                 rt5645_sel_asrc_clk_src(component,
 117                                         RT5645_AD_STEREO_FILTER,
 118                                         RT5645_CLK_SEL_I2S1_ASRC);
 119         } else if (!strcmp(codec_capture_dai, "rt5645-aif2")) {
 120                 rt5645_sel_asrc_clk_src(component,
 121                                         RT5645_AD_STEREO_FILTER,
 122                                         RT5645_CLK_SEL_I2S2_ASRC);
 123         } else {
 124                 dev_warn(card->dev,
 125                          "Only one dai codec found in DTS, enabled rt5645 AD filter\n");
 126                 rt5645_sel_asrc_clk_src(component,
 127                                         RT5645_AD_STEREO_FILTER,
 128                                         RT5645_CLK_SEL_I2S1_ASRC);
 129         }
 130
 131         /* enable jack detection */
 132         ret = snd_soc_card_jack_new(card, "Headset Jack",
 133                                     SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
 134                                     SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 135                                     SND_JACK_BTN_2 | SND_JACK_BTN_3,
 136                                     &mt8173_rt5650_jack, NULL, 0);
 137         if (ret) {
 138                 dev_err(card->dev, "Can't new Headset Jack %d\n", ret);
 139                 return ret;
 140         }
 141
 142         return rt5645_set_jack_detect(component,
 143                                       &mt8173_rt5650_jack,
 144                                       &mt8173_rt5650_jack,
 145                                       &mt8173_rt5650_jack);
 146 }
 147
 148 static struct snd_soc_dai_link_component mt8173_rt5650_codecs[] = {
 149         {
 150                 /* Playback */
 151                 .dai_name = "rt5645-aif1",
 152         },
 153         {
 154                 /* Capture */
 155                 .dai_name = "rt5645-aif1",
 156         },
 157 };
 158
 159 enum {
 160         DAI_LINK_PLAYBACK,
 161         DAI_LINK_CAPTURE,
 162         DAI_LINK_HDMI,
 163         DAI_LINK_CODEC_I2S,
 164         DAI_LINK_HDMI_I2S,
 165 };
 166
 167 /* Digital audio interface glue - connects codec <---> CPU */
 168 static struct snd_soc_dai_link mt8173_rt5650_dais[] = {
 169         /* Front End DAI links */
 170         [DAI_LINK_PLAYBACK] = {
 171                 .name = "rt5650 Playback",
 172                 .stream_name = "rt5650 Playback",
 173                 .cpu_dai_name = "DL1",
 174                 .codec_name = "snd-soc-dummy",
 175                 .codec_dai_name = "snd-soc-dummy-dai",
 176                 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 177                 .dynamic = 1,
 178                 .dpcm_playback = 1,
 179         },
 180         [DAI_LINK_CAPTURE] = {
 181                 .name = "rt5650 Capture",
 182                 .stream_name = "rt5650 Capture",
 183                 .cpu_dai_name = "VUL",
 184                 .codec_name = "snd-soc-dummy",
 185                 .codec_dai_name = "snd-soc-dummy-dai",
 186                 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 187                 .dynamic = 1,
 188                 .dpcm_capture = 1,
 189         },
 190         [DAI_LINK_HDMI] = {
 191                 .name = "HDMI",
 192                 .stream_name = "HDMI PCM",
 193                 .cpu_dai_name = "HDMI",
 194                 .codec_name = "snd-soc-dummy",
 195                 .codec_dai_name = "snd-soc-dummy-dai",
 196                 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 197                 .dynamic = 1,
 198                 .dpcm_playback = 1,
 199         },
 200         /* Back End DAI links */
 201         [DAI_LINK_CODEC_I2S] = {
 202                 .name = "Codec",
 203                 .cpu_dai_name = "I2S",
 204                 .no_pcm = 1,
 205                 .codecs = mt8173_rt5650_codecs,
 206                 .num_codecs = 2,
 207                 .init = mt8173_rt5650_init,
 208                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 209                            SND_SOC_DAIFMT_CBS_CFS,
 210                 .ops = &mt8173_rt5650_ops,
 211                 .ignore_pmdown_time = 1,
 212                 .dpcm_playback = 1,
 213                 .dpcm_capture = 1,
 214         },
 215         [DAI_LINK_HDMI_I2S] = {
 216                 .name = "HDMI BE",
 217                 .cpu_dai_name = "HDMIO",
 218                 .no_pcm = 1,
 219                 .codec_dai_name = "i2s-hifi",
 220                 .dpcm_playback = 1,
 221         },
 222 };
 223
 224 static struct snd_soc_card mt8173_rt5650_card = {
 225         .name = "mtk-rt5650",
 226         .owner = THIS_MODULE,
 227         .dai_link = mt8173_rt5650_dais,
 228         .num_links = ARRAY_SIZE(mt8173_rt5650_dais),
 229         .controls = mt8173_rt5650_controls,
 230         .num_controls = ARRAY_SIZE(mt8173_rt5650_controls),
 231         .dapm_widgets = mt8173_rt5650_widgets,
 232         .num_dapm_widgets = ARRAY_SIZE(mt8173_rt5650_widgets),
 233         .dapm_routes = mt8173_rt5650_routes,
 234         .num_dapm_routes = ARRAY_SIZE(mt8173_rt5650_routes),
 235 };
 236
 237 static int mt8173_rt5650_dev_probe(struct platform_device *pdev)
 238 {
 239         struct snd_soc_card *card = &mt8173_rt5650_card;
 240         struct device_node *platform_node;
 241         struct device_node *np;
 242         const char *codec_capture_dai;
 243         int i, ret;
 244
 245         platform_node = of_parse_phandle(pdev->dev.of_node,
 246                                          "mediatek,platform", 0);
 247         if (!platform_node) {
 248                 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
 249                 return -EINVAL;
 250         }
 251
 252         for (i = 0; i < card->num_links; i++) {
 253                 if (mt8173_rt5650_dais[i].platform_name)
 254                         continue;
 255                 mt8173_rt5650_dais[i].platform_of_node = platform_node;
 256         }
 257
 258         mt8173_rt5650_codecs[0].of_node =
 259                 of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 0);
 260         if (!mt8173_rt5650_codecs[0].of_node) {
 261                 dev_err(&pdev->dev,
 262                         "Property 'audio-codec' missing or invalid\n");
 263                 ret = -EINVAL;
 264                 goto put_platform_node;
 265         }
 266         mt8173_rt5650_codecs[1].of_node = mt8173_rt5650_codecs[0].of_node;
 267
 268         np = of_get_child_by_name(pdev->dev.of_node, "codec-capture");
 269         if (np) {
 270                 ret = snd_soc_of_get_dai_name(np, &codec_capture_dai);
 271                 of_node_put(np);
 272                 if (ret < 0) {
 273                         dev_err(&pdev->dev,
 274                                 "%s codec_capture_dai name fail %d\n",
 275                                 __func__, ret);
 276                         goto put_platform_node;
 277                 }
 278                 mt8173_rt5650_codecs[1].dai_name = codec_capture_dai;
 279         }
 280
 281         if (device_property_present(&pdev->dev, "mediatek,mclk")) {
 282                 ret = device_property_read_u32(&pdev->dev,
 283                                                "mediatek,mclk",
 284                                                &mt8173_rt5650_priv.pll_from);
 285                 if (ret) {
 286                         dev_err(&pdev->dev,
 287                                 "%s snd_soc_register_card fail %d\n",
 288                                 __func__, ret);
 289                 }
 290         }
 291
 292         mt8173_rt5650_dais[DAI_LINK_HDMI_I2S].codec_of_node =
 293                 of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 1);
 294         if (!mt8173_rt5650_dais[DAI_LINK_HDMI_I2S].codec_of_node) {
 295                 dev_err(&pdev->dev,
 296                         "Property 'audio-codec' missing or invalid\n");
 297                 ret = -EINVAL;
 298                 goto put_platform_node;
 299         }
 300         card->dev = &pdev->dev;
 301
 302         ret = devm_snd_soc_register_card(&pdev->dev, card);
 303         if (ret)
 304                 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
 305                         __func__, ret);
 306
 307 put_platform_node:
 308         of_node_put(platform_node);
 309         return ret;
 310 }
 311
 312 static const struct of_device_id mt8173_rt5650_dt_match[] = {
 313         { .compatible = "mediatek,mt8173-rt5650", },
 314         { }
 315 };
 316 MODULE_DEVICE_TABLE(of, mt8173_rt5650_dt_match);
 317
 318 static struct platform_driver mt8173_rt5650_driver = {
 319         .driver = {
 320                    .name = "mtk-rt5650",
 321                    .of_match_table = mt8173_rt5650_dt_match,
 322 #ifdef CONFIG_PM
 323                    .pm = &snd_soc_pm_ops,
 324 #endif
 325         },
 326         .probe = mt8173_rt5650_dev_probe,
 327 };
 328
 329 module_platform_driver(mt8173_rt5650_driver);
 330
 331 /* Module information */
 332 MODULE_DESCRIPTION("MT8173 RT5650 SoC machine driver");
 333 MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>");
 334 MODULE_LICENSE("GPL v2");
 335 MODULE_ALIAS("platform:mtk-rt5650");
 336