sound/soc/qcom/sdm845.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2018, The Linux Foundation. All rights reserved.
   4  */
   5
   6 #include <linux/module.h>
   7 #include <linux/platform_device.h>
   8 #include <linux/of_device.h>
   9 #include <sound/core.h>
  10 #include <sound/pcm.h>
  11 #include <sound/pcm_params.h>
  12 #include <sound/jack.h>
  13 #include <sound/soc.h>
  14 #include <uapi/linux/input-event-codes.h>
  15 #include "common.h"
  16 #include "qdsp6/q6afe.h"
  17 #include "../codecs/rt5663.h"
  18
  19 #define DEFAULT_SAMPLE_RATE_48K         48000
  20 #define DEFAULT_MCLK_RATE               24576000
  21 #define TDM_BCLK_RATE           6144000
  22 #define MI2S_BCLK_RATE          1536000
  23 #define LEFT_SPK_TDM_TX_MASK    0x30
  24 #define RIGHT_SPK_TDM_TX_MASK   0xC0
  25 #define SPK_TDM_RX_MASK         0x03
  26 #define NUM_TDM_SLOTS           8
  27
  28 struct sdm845_snd_data {
  29         struct snd_soc_jack jack;
  30         bool jack_setup;
  31         struct snd_soc_card *card;
  32         uint32_t pri_mi2s_clk_count;
  33         uint32_t sec_mi2s_clk_count;
  34         uint32_t quat_tdm_clk_count;
  35 };
  36
  37 static unsigned int tdm_slot_offset[8] = {0, 4, 8, 12, 16, 20, 24, 28};
  38
  39 static int sdm845_tdm_snd_hw_params(struct snd_pcm_substream *substream,
  40                                         struct snd_pcm_hw_params *params)
  41 {
  42         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  43         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  44         int ret = 0, j;
  45         int channels, slot_width;
  46
  47         switch (params_format(params)) {
  48         case SNDRV_PCM_FORMAT_S16_LE:
  49                 slot_width = 16;
  50                 break;
  51         default:
  52                 dev_err(rtd->dev, "%s: invalid param format 0x%x\n",
  53                                 __func__, params_format(params));
  54                 return -EINVAL;
  55         }
  56
  57         channels = params_channels(params);
  58         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
  59                 ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0, 0x3,
  60                                 8, slot_width);
  61                 if (ret < 0) {
  62                         dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n",
  63                                         __func__, ret);
  64                         goto end;
  65                 }
  66
  67                 ret = snd_soc_dai_set_channel_map(cpu_dai, 0, NULL,
  68                                 channels, tdm_slot_offset);
  69                 if (ret < 0) {
  70                         dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n",
  71                                         __func__, ret);
  72                         goto end;
  73                 }
  74         } else {
  75                 ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xf, 0,
  76                                 8, slot_width);
  77                 if (ret < 0) {
  78                         dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n",
  79                                         __func__, ret);
  80                         goto end;
  81                 }
  82
  83                 ret = snd_soc_dai_set_channel_map(cpu_dai, channels,
  84                                 tdm_slot_offset, 0, NULL);
  85                 if (ret < 0) {
  86                         dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n",
  87                                         __func__, ret);
  88                         goto end;
  89                 }
  90         }
  91
  92         for (j = 0; j < rtd->num_codecs; j++) {
  93                 struct snd_soc_dai *codec_dai = rtd->codec_dais[j];
  94
  95                 if (!strcmp(codec_dai->component->name_prefix, "Left")) {
  96                         ret = snd_soc_dai_set_tdm_slot(
  97                                         codec_dai, LEFT_SPK_TDM_TX_MASK,
  98                                         SPK_TDM_RX_MASK, NUM_TDM_SLOTS,
  99                                         slot_width);
 100                         if (ret < 0) {
 101                                 dev_err(rtd->dev,
 102                                         "DEV0 TDM slot err:%d\n", ret);
 103                                 return ret;
 104                         }
 105                 }
 106
 107                 if (!strcmp(codec_dai->component->name_prefix, "Right")) {
 108                         ret = snd_soc_dai_set_tdm_slot(
 109                                         codec_dai, RIGHT_SPK_TDM_TX_MASK,
 110                                         SPK_TDM_RX_MASK, NUM_TDM_SLOTS,
 111                                         slot_width);
 112                         if (ret < 0) {
 113                                 dev_err(rtd->dev,
 114                                         "DEV1 TDM slot err:%d\n", ret);
 115                                 return ret;
 116                         }
 117                 }
 118         }
 119
 120 end:
 121         return ret;
 122 }
 123
 124 static int sdm845_snd_hw_params(struct snd_pcm_substream *substream,
 125                                         struct snd_pcm_hw_params *params)
 126 {
 127         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 128         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 129         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 130         int ret = 0;
 131
 132         switch (cpu_dai->id) {
 133         case PRIMARY_MI2S_RX:
 134         case PRIMARY_MI2S_TX:
 135                 /*
 136                  * Use ASRC for internal clocks, as PLL rate isn't multiple
 137                  * of BCLK.
 138                  */
 139                 rt5663_sel_asrc_clk_src(
 140                         codec_dai->component,
 141                         RT5663_DA_STEREO_FILTER | RT5663_AD_STEREO_FILTER,
 142                         RT5663_CLK_SEL_I2S1_ASRC);
 143                 ret = snd_soc_dai_set_sysclk(
 144                         codec_dai, RT5663_SCLK_S_MCLK, DEFAULT_MCLK_RATE,
 145                         SND_SOC_CLOCK_IN);
 146                 if (ret < 0)
 147                         dev_err(rtd->dev,
 148                                 "snd_soc_dai_set_sysclk err = %d\n", ret);
 149                 break;
 150         case QUATERNARY_TDM_RX_0:
 151         case QUATERNARY_TDM_TX_0:
 152                 ret = sdm845_tdm_snd_hw_params(substream, params);
 153                 break;
 154         default:
 155                 pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
 156                 break;
 157         }
 158         return ret;
 159 }
 160
 161 static int sdm845_dai_init(struct snd_soc_pcm_runtime *rtd)
 162 {
 163         struct snd_soc_component *component;
 164         struct snd_soc_dai_link *dai_link = rtd->dai_link;
 165         struct snd_soc_card *card = rtd->card;
 166         struct sdm845_snd_data *pdata = snd_soc_card_get_drvdata(card);
 167         int i, rval;
 168
 169         if (!pdata->jack_setup) {
 170                 struct snd_jack *jack;
 171
 172                 rval = snd_soc_card_jack_new(card, "Headset Jack",
 173                                 SND_JACK_HEADSET |
 174                                 SND_JACK_HEADPHONE |
 175                                 SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 176                                 SND_JACK_BTN_2 | SND_JACK_BTN_3,
 177                                 &pdata->jack, NULL, 0);
 178
 179                 if (rval < 0) {
 180                         dev_err(card->dev, "Unable to add Headphone Jack\n");
 181                         return rval;
 182                 }
 183
 184                 jack = pdata->jack.jack;
 185
 186                 snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
 187                 snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
 188                 snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
 189                 snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
 190                 pdata->jack_setup = true;
 191         }
 192
 193         for (i = 0 ; i < dai_link->num_codecs; i++) {
 194                 struct snd_soc_dai *dai = rtd->codec_dais[i];
 195
 196                 component = dai->component;
 197                 rval = snd_soc_component_set_jack(
 198                                 component, &pdata->jack, NULL);
 199                 if (rval != 0 && rval != -ENOTSUPP) {
 200                         dev_warn(card->dev, "Failed to set jack: %d\n", rval);
 201                         return rval;
 202                 }
 203         }
 204
 205         return 0;
 206 }
 207
 208
 209 static int sdm845_snd_startup(struct snd_pcm_substream *substream)
 210 {
 211         unsigned int fmt = SND_SOC_DAIFMT_CBS_CFS;
 212         unsigned int codec_dai_fmt = SND_SOC_DAIFMT_CBS_CFS;
 213         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 214         struct snd_soc_card *card = rtd->card;
 215         struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
 216         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 217         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 218         int j;
 219         int ret;
 220
 221         switch (cpu_dai->id) {
 222         case PRIMARY_MI2S_RX:
 223         case PRIMARY_MI2S_TX:
 224                 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF;
 225                 if (++(data->pri_mi2s_clk_count) == 1) {
 226                         snd_soc_dai_set_sysclk(cpu_dai,
 227                                 Q6AFE_LPASS_CLK_ID_MCLK_1,
 228                                 DEFAULT_MCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
 229                         snd_soc_dai_set_sysclk(cpu_dai,
 230                                 Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
 231                                 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
 232                 }
 233                 snd_soc_dai_set_fmt(cpu_dai, fmt);
 234                 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
 235                 break;
 236
 237         case SECONDARY_MI2S_TX:
 238                 if (++(data->sec_mi2s_clk_count) == 1) {
 239                         snd_soc_dai_set_sysclk(cpu_dai,
 240                                 Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
 241                                 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_CAPTURE);
 242                 }
 243                 snd_soc_dai_set_fmt(cpu_dai, fmt);
 244                 break;
 245
 246         case QUATERNARY_TDM_RX_0:
 247         case QUATERNARY_TDM_TX_0:
 248                 if (++(data->quat_tdm_clk_count) == 1) {
 249                         snd_soc_dai_set_sysclk(cpu_dai,
 250                                 Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT,
 251                                 TDM_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
 252                 }
 253
 254                 codec_dai_fmt |= SND_SOC_DAIFMT_IB_NF | SND_SOC_DAIFMT_DSP_B;
 255
 256                 for (j = 0; j < rtd->num_codecs; j++) {
 257                         codec_dai = rtd->codec_dais[j];
 258
 259                         if (!strcmp(codec_dai->component->name_prefix,
 260                                     "Left")) {
 261                                 ret = snd_soc_dai_set_fmt(
 262                                                 codec_dai, codec_dai_fmt);
 263                                 if (ret < 0) {
 264                                         dev_err(rtd->dev,
 265                                                 "Left TDM fmt err:%d\n", ret);
 266                                         return ret;
 267                                 }
 268                         }
 269
 270                         if (!strcmp(codec_dai->component->name_prefix,
 271                                     "Right")) {
 272                                 ret = snd_soc_dai_set_fmt(
 273                                                 codec_dai, codec_dai_fmt);
 274                                 if (ret < 0) {
 275                                         dev_err(rtd->dev,
 276                                                 "Right TDM slot err:%d\n", ret);
 277                                         return ret;
 278                                 }
 279                         }
 280                 }
 281                 break;
 282
 283         default:
 284                 pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
 285                 break;
 286         }
 287         return 0;
 288 }
 289
 290 static void  sdm845_snd_shutdown(struct snd_pcm_substream *substream)
 291 {
 292         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 293         struct snd_soc_card *card = rtd->card;
 294         struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
 295         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 296
 297         switch (cpu_dai->id) {
 298         case PRIMARY_MI2S_RX:
 299         case PRIMARY_MI2S_TX:
 300                 if (--(data->pri_mi2s_clk_count) == 0) {
 301                         snd_soc_dai_set_sysclk(cpu_dai,
 302                                 Q6AFE_LPASS_CLK_ID_MCLK_1,
 303                                 0, SNDRV_PCM_STREAM_PLAYBACK);
 304                         snd_soc_dai_set_sysclk(cpu_dai,
 305                                 Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
 306                                 0, SNDRV_PCM_STREAM_PLAYBACK);
 307                 };
 308                 break;
 309
 310         case SECONDARY_MI2S_TX:
 311                 if (--(data->sec_mi2s_clk_count) == 0) {
 312                         snd_soc_dai_set_sysclk(cpu_dai,
 313                                 Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
 314                                 0, SNDRV_PCM_STREAM_CAPTURE);
 315                 }
 316                 break;
 317
 318         case QUATERNARY_TDM_RX_0:
 319         case QUATERNARY_TDM_TX_0:
 320                 if (--(data->quat_tdm_clk_count) == 0) {
 321                         snd_soc_dai_set_sysclk(cpu_dai,
 322                                 Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT,
 323                                 0, SNDRV_PCM_STREAM_PLAYBACK);
 324                 }
 325                 break;
 326
 327         default:
 328                 pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
 329                 break;
 330         }
 331 }
 332
 333 static const struct snd_soc_ops sdm845_be_ops = {
 334         .hw_params = sdm845_snd_hw_params,
 335         .startup = sdm845_snd_startup,
 336         .shutdown = sdm845_snd_shutdown,
 337 };
 338
 339 static int sdm845_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 340                                 struct snd_pcm_hw_params *params)
 341 {
 342         struct snd_interval *rate = hw_param_interval(params,
 343                                         SNDRV_PCM_HW_PARAM_RATE);
 344         struct snd_interval *channels = hw_param_interval(params,
 345                                         SNDRV_PCM_HW_PARAM_CHANNELS);
 346         struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 347
 348         rate->min = rate->max = DEFAULT_SAMPLE_RATE_48K;
 349         channels->min = channels->max = 2;
 350         snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
 351
 352         return 0;
 353 }
 354
 355 static const struct snd_soc_dapm_widget sdm845_snd_widgets[] = {
 356         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 357         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 358         SND_SOC_DAPM_SPK("Left Spk", NULL),
 359         SND_SOC_DAPM_SPK("Right Spk", NULL),
 360         SND_SOC_DAPM_MIC("Int Mic", NULL),
 361 };
 362
 363 static void sdm845_add_ops(struct snd_soc_card *card)
 364 {
 365         struct snd_soc_dai_link *link;
 366         int i;
 367
 368         for_each_card_prelinks(card, i, link) {
 369                 if (link->no_pcm == 1) {
 370                         link->ops = &sdm845_be_ops;
 371                         link->be_hw_params_fixup = sdm845_be_hw_params_fixup;
 372                 }
 373                 link->init = sdm845_dai_init;
 374         }
 375 }
 376
 377 static int sdm845_snd_platform_probe(struct platform_device *pdev)
 378 {
 379         struct snd_soc_card *card;
 380         struct sdm845_snd_data *data;
 381         struct device *dev = &pdev->dev;
 382         int ret;
 383
 384         card = kzalloc(sizeof(*card), GFP_KERNEL);
 385         if (!card)
 386                 return -ENOMEM;
 387
 388         /* Allocate the private data */
 389         data = kzalloc(sizeof(*data), GFP_KERNEL);
 390         if (!data) {
 391                 ret = -ENOMEM;
 392                 goto data_alloc_fail;
 393         }
 394
 395         card->dapm_widgets = sdm845_snd_widgets;
 396         card->num_dapm_widgets = ARRAY_SIZE(sdm845_snd_widgets);
 397         card->dev = dev;
 398         dev_set_drvdata(dev, card);
 399         ret = qcom_snd_parse_of(card);
 400         if (ret) {
 401                 dev_err(dev, "Error parsing OF data\n");
 402                 goto parse_dt_fail;
 403         }
 404
 405         data->card = card;
 406         snd_soc_card_set_drvdata(card, data);
 407
 408         sdm845_add_ops(card);
 409         ret = snd_soc_register_card(card);
 410         if (ret) {
 411                 dev_err(dev, "Sound card registration failed\n");
 412                 goto register_card_fail;
 413         }
 414         return ret;
 415
 416 register_card_fail:
 417         kfree(card->dai_link);
 418 parse_dt_fail:
 419         kfree(data);
 420 data_alloc_fail:
 421         kfree(card);
 422         return ret;
 423 }
 424
 425 static int sdm845_snd_platform_remove(struct platform_device *pdev)
 426 {
 427         struct snd_soc_card *card = dev_get_drvdata(&pdev->dev);
 428         struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
 429
 430         snd_soc_unregister_card(card);
 431         kfree(card->dai_link);
 432         kfree(data);
 433         kfree(card);
 434         return 0;
 435 }
 436
 437 static const struct of_device_id sdm845_snd_device_id[]  = {
 438         { .compatible = "qcom,sdm845-sndcard" },
 439         {},
 440 };
 441 MODULE_DEVICE_TABLE(of, sdm845_snd_device_id);
 442
 443 static struct platform_driver sdm845_snd_driver = {
 444         .probe = sdm845_snd_platform_probe,
 445         .remove = sdm845_snd_platform_remove,
 446         .driver = {
 447                 .name = "msm-snd-sdm845",
 448                 .of_match_table = sdm845_snd_device_id,
 449         },
 450 };
 451 module_platform_driver(sdm845_snd_driver);
 452
 453 MODULE_DESCRIPTION("sdm845 ASoC Machine Driver");
 454 MODULE_LICENSE("GPL v2");