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