sound/soc/qcom/sm8250.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (c) 2020, Linaro Limited
   3
   4 #include <linux/module.h>
   5 #include <linux/platform_device.h>
   6 #include <linux/of_device.h>
   7 #include <sound/soc.h>
   8 #include <sound/soc-dapm.h>
   9 #include <sound/pcm.h>
  10 #include <linux/soundwire/sdw.h>
  11 #include <sound/jack.h>
  12 #include <linux/input-event-codes.h>
  13 #include "qdsp6/q6afe.h"
  14 #include "common.h"
  15
  16 #define DRIVER_NAME             "sm8250"
  17 #define MI2S_BCLK_RATE          1536000
  18
  19 struct sm8250_snd_data {
  20         bool stream_prepared[AFE_PORT_MAX];
  21         struct snd_soc_card *card;
  22         struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
  23         struct snd_soc_jack jack;
  24         bool jack_setup;
  25 };
  26
  27 static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd)
  28 {
  29         struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
  30         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  31         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
  32         struct snd_soc_card *card = rtd->card;
  33         int rval, i;
  34
  35         if (!data->jack_setup) {
  36                 struct snd_jack *jack;
  37
  38                 rval = snd_soc_card_jack_new(card, "Headset Jack",
  39                                              SND_JACK_HEADSET | SND_JACK_LINEOUT |
  40                                              SND_JACK_MECHANICAL |
  41                                              SND_JACK_BTN_0 | SND_JACK_BTN_1 |
  42                                              SND_JACK_BTN_2 | SND_JACK_BTN_3 |
  43                                              SND_JACK_BTN_4 | SND_JACK_BTN_5,
  44                                              &data->jack);
  45
  46                 if (rval < 0) {
  47                         dev_err(card->dev, "Unable to add Headphone Jack\n");
  48                         return rval;
  49                 }
  50
  51                 jack = data->jack.jack;
  52
  53                 snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_MEDIA);
  54                 snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
  55                 snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
  56                 snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
  57                 data->jack_setup = true;
  58         }
  59
  60         switch (cpu_dai->id) {
  61         case TX_CODEC_DMA_TX_0:
  62         case TX_CODEC_DMA_TX_1:
  63         case TX_CODEC_DMA_TX_2:
  64         case TX_CODEC_DMA_TX_3:
  65                 for_each_rtd_codec_dais(rtd, i, codec_dai) {
  66                         rval = snd_soc_component_set_jack(codec_dai->component,
  67                                                           &data->jack, NULL);
  68                         if (rval != 0 && rval != -ENOTSUPP) {
  69                                 dev_warn(card->dev, "Failed to set jack: %d\n", rval);
  70                                 return rval;
  71                         }
  72                 }
  73
  74                 break;
  75         default:
  76                 break;
  77         }
  78
  79
  80         return 0;
  81 }
  82
  83 static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
  84                                      struct snd_pcm_hw_params *params)
  85 {
  86         struct snd_interval *rate = hw_param_interval(params,
  87                                         SNDRV_PCM_HW_PARAM_RATE);
  88         struct snd_interval *channels = hw_param_interval(params,
  89                                         SNDRV_PCM_HW_PARAM_CHANNELS);
  90
  91         rate->min = rate->max = 48000;
  92         channels->min = channels->max = 2;
  93
  94         return 0;
  95 }
  96
  97 static int sm8250_snd_startup(struct snd_pcm_substream *substream)
  98 {
  99         unsigned int fmt = SND_SOC_DAIFMT_BP_FP;
 100         unsigned int codec_dai_fmt = SND_SOC_DAIFMT_BC_FC;
 101         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 102         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 103         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
 104
 105         switch (cpu_dai->id) {
 106         case TERTIARY_MI2S_RX:
 107                 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
 108                 snd_soc_dai_set_sysclk(cpu_dai,
 109                         Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT,
 110                         MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
 111                 snd_soc_dai_set_fmt(cpu_dai, fmt);
 112                 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
 113                 break;
 114         default:
 115                 break;
 116         }
 117         return 0;
 118 }
 119
 120 static int sm8250_snd_hw_params(struct snd_pcm_substream *substream,
 121                                 struct snd_pcm_hw_params *params)
 122 {
 123         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 124         struct snd_soc_dai *codec_dai;
 125         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 126         struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
 127         struct sdw_stream_runtime *sruntime;
 128         int i;
 129
 130         switch (cpu_dai->id) {
 131         case WSA_CODEC_DMA_RX_0:
 132         case RX_CODEC_DMA_RX_0:
 133         case RX_CODEC_DMA_RX_1:
 134         case TX_CODEC_DMA_TX_0:
 135         case TX_CODEC_DMA_TX_1:
 136         case TX_CODEC_DMA_TX_2:
 137         case TX_CODEC_DMA_TX_3:
 138                 for_each_rtd_codec_dais(rtd, i, codec_dai) {
 139                         sruntime = snd_soc_dai_get_stream(codec_dai,
 140                                                           substream->stream);
 141                         if (sruntime != ERR_PTR(-ENOTSUPP))
 142                                 pdata->sruntime[cpu_dai->id] = sruntime;
 143                 }
 144                 break;
 145         }
 146
 147         return 0;
 148
 149 }
 150
 151 static int sm8250_snd_wsa_dma_prepare(struct snd_pcm_substream *substream)
 152 {
 153         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 154         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 155         struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 156         struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
 157         int ret;
 158
 159         if (!sruntime)
 160                 return 0;
 161
 162         if (data->stream_prepared[cpu_dai->id]) {
 163                 sdw_disable_stream(sruntime);
 164                 sdw_deprepare_stream(sruntime);
 165                 data->stream_prepared[cpu_dai->id] = false;
 166         }
 167
 168         ret = sdw_prepare_stream(sruntime);
 169         if (ret)
 170                 return ret;
 171
 172         /**
 173          * NOTE: there is a strict hw requirement about the ordering of port
 174          * enables and actual WSA881x PA enable. PA enable should only happen
 175          * after soundwire ports are enabled if not DC on the line is
 176          * accumulated resulting in Click/Pop Noise
 177          * PA enable/mute are handled as part of codec DAPM and digital mute.
 178          */
 179
 180         ret = sdw_enable_stream(sruntime);
 181         if (ret) {
 182                 sdw_deprepare_stream(sruntime);
 183                 return ret;
 184         }
 185         data->stream_prepared[cpu_dai->id]  = true;
 186
 187         return ret;
 188 }
 189
 190 static int sm8250_snd_prepare(struct snd_pcm_substream *substream)
 191 {
 192         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 193         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 194
 195         switch (cpu_dai->id) {
 196         case WSA_CODEC_DMA_RX_0:
 197         case WSA_CODEC_DMA_RX_1:
 198         case RX_CODEC_DMA_RX_0:
 199         case RX_CODEC_DMA_RX_1:
 200         case TX_CODEC_DMA_TX_0:
 201         case TX_CODEC_DMA_TX_1:
 202         case TX_CODEC_DMA_TX_2:
 203         case TX_CODEC_DMA_TX_3:
 204                 return sm8250_snd_wsa_dma_prepare(substream);
 205         default:
 206                 break;
 207         }
 208
 209         return 0;
 210 }
 211
 212 static int sm8250_snd_hw_free(struct snd_pcm_substream *substream)
 213 {
 214         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 215         struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 216         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 217         struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
 218
 219         switch (cpu_dai->id) {
 220         case WSA_CODEC_DMA_RX_0:
 221         case WSA_CODEC_DMA_RX_1:
 222         case RX_CODEC_DMA_RX_0:
 223         case RX_CODEC_DMA_RX_1:
 224         case TX_CODEC_DMA_TX_0:
 225         case TX_CODEC_DMA_TX_1:
 226         case TX_CODEC_DMA_TX_2:
 227         case TX_CODEC_DMA_TX_3:
 228                 if (sruntime && data->stream_prepared[cpu_dai->id]) {
 229                         sdw_disable_stream(sruntime);
 230                         sdw_deprepare_stream(sruntime);
 231                         data->stream_prepared[cpu_dai->id] = false;
 232                 }
 233                 break;
 234         default:
 235                 break;
 236         }
 237
 238         return 0;
 239 }
 240
 241 static const struct snd_soc_ops sm8250_be_ops = {
 242         .startup = sm8250_snd_startup,
 243         .hw_params = sm8250_snd_hw_params,
 244         .hw_free = sm8250_snd_hw_free,
 245         .prepare = sm8250_snd_prepare,
 246 };
 247
 248 static void sm8250_add_be_ops(struct snd_soc_card *card)
 249 {
 250         struct snd_soc_dai_link *link;
 251         int i;
 252
 253         for_each_card_prelinks(card, i, link) {
 254                 if (link->no_pcm == 1) {
 255                         link->init = sm8250_snd_init;
 256                         link->be_hw_params_fixup = sm8250_be_hw_params_fixup;
 257                         link->ops = &sm8250_be_ops;
 258                 }
 259         }
 260 }
 261
 262 static int sm8250_platform_probe(struct platform_device *pdev)
 263 {
 264         struct snd_soc_card *card;
 265         struct sm8250_snd_data *data;
 266         struct device *dev = &pdev->dev;
 267         int ret;
 268
 269         card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
 270         if (!card)
 271                 return -ENOMEM;
 272
 273         card->owner = THIS_MODULE;
 274         /* Allocate the private data */
 275         data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 276         if (!data)
 277                 return -ENOMEM;
 278
 279         card->dev = dev;
 280         dev_set_drvdata(dev, card);
 281         snd_soc_card_set_drvdata(card, data);
 282         ret = qcom_snd_parse_of(card);
 283         if (ret)
 284                 return ret;
 285
 286         card->driver_name = DRIVER_NAME;
 287         sm8250_add_be_ops(card);
 288         return devm_snd_soc_register_card(dev, card);
 289 }
 290
 291 static const struct of_device_id snd_sm8250_dt_match[] = {
 292         {.compatible = "qcom,sm8250-sndcard"},
 293         {.compatible = "qcom,qrb5165-rb5-sndcard"},
 294         {}
 295 };
 296
 297 MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match);
 298
 299 static struct platform_driver snd_sm8250_driver = {
 300         .probe  = sm8250_platform_probe,
 301         .driver = {
 302                 .name = "snd-sm8250",
 303                 .of_match_table = snd_sm8250_dt_match,
 304         },
 305 };
 306 module_platform_driver(snd_sm8250_driver);
 307 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
 308 MODULE_DESCRIPTION("SM8250 ASoC Machine Driver");
 309 MODULE_LICENSE("GPL v2");