sound/soc/qcom/sc7180.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 //
   3 // Copyright (c) 2020, The Linux Foundation. All rights reserved.
   4 //
   5 // sc7180.c -- ALSA SoC Machine driver for SC7180
   6
   7 #include <dt-bindings/sound/sc7180-lpass.h>
   8 #include <linux/gpio.h>
   9 #include <linux/gpio/consumer.h>
  10 #include <linux/module.h>
  11 #include <linux/of_device.h>
  12 #include <linux/platform_device.h>
  13 #include <sound/core.h>
  14 #include <sound/jack.h>
  15 #include <sound/pcm.h>
  16 #include <sound/soc.h>
  17 #include <uapi/linux/input-event-codes.h>
  18
  19 #include "../codecs/rt5682.h"
  20 #include "../codecs/rt5682s.h"
  21 #include "common.h"
  22 #include "lpass.h"
  23
  24 #define DEFAULT_MCLK_RATE               19200000
  25 #define RT5682_PLL1_FREQ (48000 * 512)
  26
  27 #define DRIVER_NAME "SC7180"
  28
  29 struct sc7180_snd_data {
  30         struct snd_soc_card card;
  31         u32 pri_mi2s_clk_count;
  32         struct snd_soc_jack hs_jack;
  33         struct snd_soc_jack hdmi_jack;
  34         struct gpio_desc *dmic_sel;
  35         int dmic_switch;
  36 };
  37
  38 static void sc7180_jack_free(struct snd_jack *jack)
  39 {
  40         struct snd_soc_component *component = jack->private_data;
  41
  42         snd_soc_component_set_jack(component, NULL, NULL);
  43 }
  44
  45 static int sc7180_headset_init(struct snd_soc_pcm_runtime *rtd)
  46 {
  47         struct snd_soc_card *card = rtd->card;
  48         struct sc7180_snd_data *pdata = snd_soc_card_get_drvdata(card);
  49         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
  50         struct snd_soc_component *component = codec_dai->component;
  51         struct snd_jack *jack;
  52         int rval;
  53
  54         rval = snd_soc_card_jack_new(
  55                         card, "Headset Jack",
  56                         SND_JACK_HEADSET |
  57                         SND_JACK_HEADPHONE |
  58                         SND_JACK_BTN_0 | SND_JACK_BTN_1 |
  59                         SND_JACK_BTN_2 | SND_JACK_BTN_3,
  60                         &pdata->hs_jack);
  61
  62         if (rval < 0) {
  63                 dev_err(card->dev, "Unable to add Headset Jack\n");
  64                 return rval;
  65         }
  66
  67         jack = pdata->hs_jack.jack;
  68
  69         snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
  70         snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
  71         snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
  72         snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
  73
  74         jack->private_data = component;
  75         jack->private_free = sc7180_jack_free;
  76
  77         return snd_soc_component_set_jack(component, &pdata->hs_jack, NULL);
  78 }
  79
  80 static int sc7180_hdmi_init(struct snd_soc_pcm_runtime *rtd)
  81 {
  82         struct snd_soc_card *card = rtd->card;
  83         struct sc7180_snd_data *pdata = snd_soc_card_get_drvdata(card);
  84         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
  85         struct snd_soc_component *component = codec_dai->component;
  86         struct snd_jack *jack;
  87         int rval;
  88
  89         rval = snd_soc_card_jack_new(
  90                         card, "HDMI Jack",
  91                         SND_JACK_LINEOUT,
  92                         &pdata->hdmi_jack);
  93
  94         if (rval < 0) {
  95                 dev_err(card->dev, "Unable to add HDMI Jack\n");
  96                 return rval;
  97         }
  98
  99         jack = pdata->hdmi_jack.jack;
 100         jack->private_data = component;
 101         jack->private_free = sc7180_jack_free;
 102
 103         return snd_soc_component_set_jack(component, &pdata->hdmi_jack, NULL);
 104 }
 105
 106 static int sc7180_init(struct snd_soc_pcm_runtime *rtd)
 107 {
 108         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 109
 110         switch (cpu_dai->id) {
 111         case MI2S_PRIMARY:
 112                 return sc7180_headset_init(rtd);
 113         case MI2S_SECONDARY:
 114                 return 0;
 115         case LPASS_DP_RX:
 116                 return sc7180_hdmi_init(rtd);
 117         default:
 118                 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
 119                         cpu_dai->id);
 120                 return -EINVAL;
 121         }
 122         return 0;
 123 }
 124
 125 static int sc7180_snd_startup(struct snd_pcm_substream *substream)
 126 {
 127         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 128         struct snd_soc_card *card = rtd->card;
 129         struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card);
 130         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 131         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
 132         int pll_id, pll_source, pll_in, pll_out, clk_id, ret;
 133
 134         if (!strcmp(codec_dai->name, "rt5682-aif1")) {
 135                 pll_source = RT5682_PLL1_S_MCLK;
 136                 pll_id = 0;
 137                 clk_id = RT5682_SCLK_S_PLL1;
 138                 pll_out = RT5682_PLL1_FREQ;
 139                 pll_in = DEFAULT_MCLK_RATE;
 140         } else if (!strcmp(codec_dai->name, "rt5682s-aif1")) {
 141                 pll_source = RT5682S_PLL_S_MCLK;
 142                 pll_id = RT5682S_PLL2;
 143                 clk_id = RT5682S_SCLK_S_PLL2;
 144                 pll_out = RT5682_PLL1_FREQ;
 145                 pll_in = DEFAULT_MCLK_RATE;
 146         }
 147
 148         switch (cpu_dai->id) {
 149         case MI2S_PRIMARY:
 150                 if (++data->pri_mi2s_clk_count == 1) {
 151                         snd_soc_dai_set_sysclk(cpu_dai,
 152                                                LPASS_MCLK0,
 153                                                DEFAULT_MCLK_RATE,
 154                                                SNDRV_PCM_STREAM_PLAYBACK);
 155                 }
 156
 157                 snd_soc_dai_set_fmt(codec_dai,
 158                                     SND_SOC_DAIFMT_BC_FC |
 159                                     SND_SOC_DAIFMT_NB_NF |
 160                                     SND_SOC_DAIFMT_I2S);
 161
 162                 /* Configure PLL1 for codec */
 163                 ret = snd_soc_dai_set_pll(codec_dai, pll_id, pll_source,
 164                                           pll_in, pll_out);
 165                 if (ret) {
 166                         dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
 167                         return ret;
 168                 }
 169
 170                 /* Configure sysclk for codec */
 171                 ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, pll_out,
 172                                              SND_SOC_CLOCK_IN);
 173                 if (ret)
 174                         dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n",
 175                                 ret);
 176
 177                 break;
 178         case MI2S_SECONDARY:
 179                 break;
 180         case LPASS_DP_RX:
 181                 break;
 182         default:
 183                 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
 184                         cpu_dai->id);
 185                 return -EINVAL;
 186         }
 187         return 0;
 188 }
 189
 190 static int dmic_get(struct snd_kcontrol *kcontrol,
 191                     struct snd_ctl_elem_value *ucontrol)
 192 {
 193         struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
 194         struct sc7180_snd_data *data = snd_soc_card_get_drvdata(dapm->card);
 195
 196         ucontrol->value.integer.value[0] = data->dmic_switch;
 197         return 0;
 198 }
 199
 200 static int dmic_set(struct snd_kcontrol *kcontrol,
 201                     struct snd_ctl_elem_value *ucontrol)
 202 {
 203         struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
 204         struct sc7180_snd_data *data = snd_soc_card_get_drvdata(dapm->card);
 205
 206         data->dmic_switch = ucontrol->value.integer.value[0];
 207         gpiod_set_value(data->dmic_sel, data->dmic_switch);
 208         return 0;
 209 }
 210
 211 static void sc7180_snd_shutdown(struct snd_pcm_substream *substream)
 212 {
 213         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 214         struct snd_soc_card *card = rtd->card;
 215         struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card);
 216         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 217
 218         switch (cpu_dai->id) {
 219         case MI2S_PRIMARY:
 220                 if (--data->pri_mi2s_clk_count == 0) {
 221                         snd_soc_dai_set_sysclk(cpu_dai,
 222                                                LPASS_MCLK0,
 223                                                0,
 224                                                SNDRV_PCM_STREAM_PLAYBACK);
 225                 }
 226                 break;
 227         case MI2S_SECONDARY:
 228                 break;
 229         case LPASS_DP_RX:
 230                 break;
 231         default:
 232                 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
 233                         cpu_dai->id);
 234                 break;
 235         }
 236 }
 237
 238 static int sc7180_adau7002_init(struct snd_soc_pcm_runtime *rtd)
 239 {
 240         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 241
 242         switch (cpu_dai->id) {
 243         case MI2S_PRIMARY:
 244                 return 0;
 245         case MI2S_SECONDARY:
 246                 return 0;
 247         case LPASS_DP_RX:
 248                 return sc7180_hdmi_init(rtd);
 249         default:
 250                 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
 251                         cpu_dai->id);
 252                 return -EINVAL;
 253         }
 254         return 0;
 255 }
 256
 257 static int sc7180_adau7002_snd_startup(struct snd_pcm_substream *substream)
 258 {
 259         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 260         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 261         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
 262         struct snd_pcm_runtime *runtime = substream->runtime;
 263
 264         switch (cpu_dai->id) {
 265         case MI2S_PRIMARY:
 266                 snd_soc_dai_set_fmt(codec_dai,
 267                                     SND_SOC_DAIFMT_CBS_CFS |
 268                                     SND_SOC_DAIFMT_NB_NF |
 269                                     SND_SOC_DAIFMT_I2S);
 270                 runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE;
 271                 snd_pcm_hw_constraint_msbits(runtime, 0, 32, 32);
 272
 273                 break;
 274         case MI2S_SECONDARY:
 275                 break;
 276         case LPASS_DP_RX:
 277                 break;
 278         default:
 279                 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
 280                         cpu_dai->id);
 281                 return -EINVAL;
 282         }
 283         return 0;
 284 }
 285
 286 static const struct snd_soc_ops sc7180_ops = {
 287         .startup = sc7180_snd_startup,
 288         .shutdown = sc7180_snd_shutdown,
 289 };
 290
 291 static const struct snd_soc_ops sc7180_adau7002_ops = {
 292         .startup = sc7180_adau7002_snd_startup,
 293 };
 294
 295 static const struct snd_soc_dapm_widget sc7180_snd_widgets[] = {
 296         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 297         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 298 };
 299
 300 static const struct snd_soc_dapm_widget sc7180_adau7002_snd_widgets[] = {
 301         SND_SOC_DAPM_MIC("DMIC", NULL),
 302 };
 303
 304 static const char * const dmic_mux_text[] = {
 305         "Front Mic",
 306         "Rear Mic",
 307 };
 308
 309 static SOC_ENUM_SINGLE_DECL(sc7180_dmic_enum,
 310                             SND_SOC_NOPM, 0, dmic_mux_text);
 311
 312 static const struct snd_kcontrol_new sc7180_dmic_mux_control =
 313         SOC_DAPM_ENUM_EXT("DMIC Select Mux", sc7180_dmic_enum,
 314                           dmic_get, dmic_set);
 315
 316 static const struct snd_soc_dapm_widget sc7180_snd_dual_mic_widgets[] = {
 317         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 318         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 319         SND_SOC_DAPM_MIC("DMIC", NULL),
 320         SND_SOC_DAPM_MUX("Dmic Mux", SND_SOC_NOPM, 0, 0, &sc7180_dmic_mux_control),
 321 };
 322
 323 static const struct snd_soc_dapm_route sc7180_snd_dual_mic_audio_route[] = {
 324         {"Dmic Mux", "Front Mic", "DMIC"},
 325         {"Dmic Mux", "Rear Mic", "DMIC"},
 326 };
 327
 328 static int sc7180_snd_platform_probe(struct platform_device *pdev)
 329 {
 330         struct snd_soc_card *card;
 331         struct sc7180_snd_data *data;
 332         struct device *dev = &pdev->dev;
 333         struct snd_soc_dai_link *link;
 334         int ret;
 335         int i;
 336         bool no_headphone = false;
 337
 338         /* Allocate the private data */
 339         data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 340         if (!data)
 341                 return -ENOMEM;
 342
 343         card = &data->card;
 344         snd_soc_card_set_drvdata(card, data);
 345
 346         card->owner = THIS_MODULE;
 347         card->driver_name = DRIVER_NAME;
 348         card->dev = dev;
 349         card->dapm_widgets = sc7180_snd_widgets;
 350         card->num_dapm_widgets = ARRAY_SIZE(sc7180_snd_widgets);
 351
 352         if (of_property_read_bool(dev->of_node, "dmic-gpios")) {
 353                 card->dapm_widgets = sc7180_snd_dual_mic_widgets,
 354                 card->num_dapm_widgets = ARRAY_SIZE(sc7180_snd_dual_mic_widgets),
 355                 card->dapm_routes = sc7180_snd_dual_mic_audio_route,
 356                 card->num_dapm_routes = ARRAY_SIZE(sc7180_snd_dual_mic_audio_route),
 357                 data->dmic_sel = devm_gpiod_get(&pdev->dev, "dmic", GPIOD_OUT_LOW);
 358                 if (IS_ERR(data->dmic_sel)) {
 359                         dev_err(&pdev->dev, "DMIC gpio failed err=%ld\n", PTR_ERR(data->dmic_sel));
 360                         return PTR_ERR(data->dmic_sel);
 361                 }
 362         }
 363
 364         if (of_device_is_compatible(dev->of_node, "google,sc7180-coachz")) {
 365                 no_headphone = true;
 366                 card->dapm_widgets = sc7180_adau7002_snd_widgets;
 367                 card->num_dapm_widgets = ARRAY_SIZE(sc7180_adau7002_snd_widgets);
 368         }
 369
 370         ret = qcom_snd_parse_of(card);
 371         if (ret)
 372                 return ret;
 373
 374         for_each_card_prelinks(card, i, link) {
 375                 if (no_headphone) {
 376                         link->ops = &sc7180_adau7002_ops;
 377                         link->init = sc7180_adau7002_init;
 378                 } else {
 379                         link->ops = &sc7180_ops;
 380                         link->init = sc7180_init;
 381                 }
 382         }
 383
 384         return devm_snd_soc_register_card(dev, card);
 385 }
 386
 387 static const struct of_device_id sc7180_snd_device_id[]  = {
 388         {.compatible = "google,sc7180-trogdor"},
 389         {.compatible = "google,sc7180-coachz"},
 390         {},
 391 };
 392 MODULE_DEVICE_TABLE(of, sc7180_snd_device_id);
 393
 394 static struct platform_driver sc7180_snd_driver = {
 395         .probe = sc7180_snd_platform_probe,
 396         .driver = {
 397                 .name = "msm-snd-sc7180",
 398                 .of_match_table = sc7180_snd_device_id,
 399                 .pm = &snd_soc_pm_ops,
 400         },
 401 };
 402 module_platform_driver(sc7180_snd_driver);
 403
 404 MODULE_DESCRIPTION("sc7180 ASoC Machine Driver");
 405 MODULE_LICENSE("GPL v2");