sound/soc/omap/omap-abe-twl6040.c

   1 /*
   2  * omap-abe-twl6040.c  --  SoC audio for TI OMAP based boards with ABE and
   3  *                         twl6040 codec
   4  *
   5  * Author: Misael Lopez Cruz <misael.lopez@ti.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * version 2 as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  19  * 02110-1301 USA
  20  *
  21  */
  22
  23 #include <linux/clk.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/mfd/twl6040.h>
  26 #include <linux/platform_data/omap-abe-twl6040.h>
  27 #include <linux/module.h>
  28 #include <linux/of.h>
  29
  30 #include <sound/core.h>
  31 #include <sound/pcm.h>
  32 #include <sound/soc.h>
  33 #include <sound/jack.h>
  34
  35 #include "omap-dmic.h"
  36 #include "omap-mcpdm.h"
  37 #include "../codecs/twl6040.h"
  38
  39 struct abe_twl6040 {
  40         int     jack_detection; /* board can detect jack events */
  41         int     mclk_freq;      /* MCLK frequency speed for twl6040 */
  42
  43         struct platform_device *dmic_codec_dev;
  44 };
  45
  46 static int omap_abe_hw_params(struct snd_pcm_substream *substream,
  47         struct snd_pcm_hw_params *params)
  48 {
  49         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  50         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  51         struct snd_soc_codec *codec = rtd->codec;
  52         struct snd_soc_card *card = codec->card;
  53         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
  54         int clk_id, freq;
  55         int ret;
  56
  57         clk_id = twl6040_get_clk_id(rtd->codec);
  58         if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
  59                 freq = priv->mclk_freq;
  60         else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
  61                 freq = 32768;
  62         else
  63                 return -EINVAL;
  64
  65         /* set the codec mclk */
  66         ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
  67                                 SND_SOC_CLOCK_IN);
  68         if (ret) {
  69                 printk(KERN_ERR "can't set codec system clock\n");
  70                 return ret;
  71         }
  72         return ret;
  73 }
  74
  75 static struct snd_soc_ops omap_abe_ops = {
  76         .hw_params = omap_abe_hw_params,
  77 };
  78
  79 static int omap_abe_dmic_hw_params(struct snd_pcm_substream *substream,
  80         struct snd_pcm_hw_params *params)
  81 {
  82         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  83         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  84         int ret = 0;
  85
  86         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_SYSCLK_PAD_CLKS,
  87                                      19200000, SND_SOC_CLOCK_IN);
  88         if (ret < 0) {
  89                 printk(KERN_ERR "can't set DMIC cpu system clock\n");
  90                 return ret;
  91         }
  92         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_ABE_DMIC_CLK, 2400000,
  93                                      SND_SOC_CLOCK_OUT);
  94         if (ret < 0) {
  95                 printk(KERN_ERR "can't set DMIC output clock\n");
  96                 return ret;
  97         }
  98         return 0;
  99 }
 100
 101 static struct snd_soc_ops omap_abe_dmic_ops = {
 102         .hw_params = omap_abe_dmic_hw_params,
 103 };
 104
 105 /* Headset jack */
 106 static struct snd_soc_jack hs_jack;
 107
 108 /*Headset jack detection DAPM pins */
 109 static struct snd_soc_jack_pin hs_jack_pins[] = {
 110         {
 111                 .pin = "Headset Mic",
 112                 .mask = SND_JACK_MICROPHONE,
 113         },
 114         {
 115                 .pin = "Headset Stereophone",
 116                 .mask = SND_JACK_HEADPHONE,
 117         },
 118 };
 119
 120 /* SDP4430 machine DAPM */
 121 static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
 122         /* Outputs */
 123         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 124         SND_SOC_DAPM_SPK("Earphone Spk", NULL),
 125         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 126         SND_SOC_DAPM_LINE("Line Out", NULL),
 127         SND_SOC_DAPM_SPK("Vibrator", NULL),
 128
 129         /* Inputs */
 130         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 131         SND_SOC_DAPM_MIC("Main Handset Mic", NULL),
 132         SND_SOC_DAPM_MIC("Sub Handset Mic", NULL),
 133         SND_SOC_DAPM_LINE("Line In", NULL),
 134
 135         /* Digital microphones */
 136         SND_SOC_DAPM_MIC("Digital Mic", NULL),
 137 };
 138
 139 static const struct snd_soc_dapm_route audio_map[] = {
 140         /* Routings for outputs */
 141         {"Headset Stereophone", NULL, "HSOL"},
 142         {"Headset Stereophone", NULL, "HSOR"},
 143
 144         {"Earphone Spk", NULL, "EP"},
 145
 146         {"Ext Spk", NULL, "HFL"},
 147         {"Ext Spk", NULL, "HFR"},
 148
 149         {"Line Out", NULL, "AUXL"},
 150         {"Line Out", NULL, "AUXR"},
 151
 152         {"Vibrator", NULL, "VIBRAL"},
 153         {"Vibrator", NULL, "VIBRAR"},
 154
 155         /* Routings for inputs */
 156         {"HSMIC", NULL, "Headset Mic"},
 157         {"Headset Mic", NULL, "Headset Mic Bias"},
 158
 159         {"MAINMIC", NULL, "Main Handset Mic"},
 160         {"Main Handset Mic", NULL, "Main Mic Bias"},
 161
 162         {"SUBMIC", NULL, "Sub Handset Mic"},
 163         {"Sub Handset Mic", NULL, "Main Mic Bias"},
 164
 165         {"AFML", NULL, "Line In"},
 166         {"AFMR", NULL, "Line In"},
 167 };
 168
 169 static inline void twl6040_disconnect_pin(struct snd_soc_dapm_context *dapm,
 170                                           int connected, char *pin)
 171 {
 172         if (!connected)
 173                 snd_soc_dapm_disable_pin(dapm, pin);
 174 }
 175
 176 static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd)
 177 {
 178         struct snd_soc_codec *codec = rtd->codec;
 179         struct snd_soc_card *card = codec->card;
 180         struct snd_soc_dapm_context *dapm = &codec->dapm;
 181         struct omap_abe_twl6040_data *pdata = dev_get_platdata(card->dev);
 182         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
 183         int hs_trim;
 184         int ret = 0;
 185
 186         /*
 187          * Configure McPDM offset cancellation based on the HSOTRIM value from
 188          * twl6040.
 189          */
 190         hs_trim = twl6040_get_trim_value(codec, TWL6040_TRIM_HSOTRIM);
 191         omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim),
 192                                         TWL6040_HSF_TRIM_RIGHT(hs_trim));
 193
 194         /* Headset jack detection only if it is supported */
 195         if (priv->jack_detection) {
 196                 ret = snd_soc_jack_new(codec, "Headset Jack",
 197                                         SND_JACK_HEADSET, &hs_jack);
 198                 if (ret)
 199                         return ret;
 200
 201                 ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 202                                         hs_jack_pins);
 203                 twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
 204         }
 205
 206         /*
 207          * NULL pdata means we booted with DT. In this case the routing is
 208          * provided and the card is fully routed, no need to mark pins.
 209          */
 210         if (!pdata)
 211                 return ret;
 212
 213         /* Disable not connected paths if not used */
 214         twl6040_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
 215         twl6040_disconnect_pin(dapm, pdata->has_hf, "Ext Spk");
 216         twl6040_disconnect_pin(dapm, pdata->has_ep, "Earphone Spk");
 217         twl6040_disconnect_pin(dapm, pdata->has_aux, "Line Out");
 218         twl6040_disconnect_pin(dapm, pdata->has_vibra, "Vibrator");
 219         twl6040_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
 220         twl6040_disconnect_pin(dapm, pdata->has_mainmic, "Main Handset Mic");
 221         twl6040_disconnect_pin(dapm, pdata->has_submic, "Sub Handset Mic");
 222         twl6040_disconnect_pin(dapm, pdata->has_afm, "Line In");
 223
 224         return ret;
 225 }
 226
 227 static const struct snd_soc_dapm_route dmic_audio_map[] = {
 228         {"DMic", NULL, "Digital Mic"},
 229         {"Digital Mic", NULL, "Digital Mic1 Bias"},
 230 };
 231
 232 static int omap_abe_dmic_init(struct snd_soc_pcm_runtime *rtd)
 233 {
 234         struct snd_soc_codec *codec = rtd->codec;
 235         struct snd_soc_dapm_context *dapm = &codec->dapm;
 236
 237         return snd_soc_dapm_add_routes(dapm, dmic_audio_map,
 238                                 ARRAY_SIZE(dmic_audio_map));
 239 }
 240
 241 /* Digital audio interface glue - connects codec <--> CPU */
 242 static struct snd_soc_dai_link abe_twl6040_dai_links[] = {
 243         {
 244                 .name = "TWL6040",
 245                 .stream_name = "TWL6040",
 246                 .cpu_dai_name = "omap-mcpdm",
 247                 .codec_dai_name = "twl6040-legacy",
 248                 .platform_name = "omap-pcm-audio",
 249                 .codec_name = "twl6040-codec",
 250                 .init = omap_abe_twl6040_init,
 251                 .ops = &omap_abe_ops,
 252         },
 253         {
 254                 .name = "DMIC",
 255                 .stream_name = "DMIC Capture",
 256                 .cpu_dai_name = "omap-dmic",
 257                 .codec_dai_name = "dmic-hifi",
 258                 .platform_name = "omap-pcm-audio",
 259                 .codec_name = "dmic-codec",
 260                 .init = omap_abe_dmic_init,
 261                 .ops = &omap_abe_dmic_ops,
 262         },
 263 };
 264
 265 /* Audio machine driver */
 266 static struct snd_soc_card omap_abe_card = {
 267         .owner = THIS_MODULE,
 268
 269         .dapm_widgets = twl6040_dapm_widgets,
 270         .num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets),
 271         .dapm_routes = audio_map,
 272         .num_dapm_routes = ARRAY_SIZE(audio_map),
 273 };
 274
 275 static int omap_abe_probe(struct platform_device *pdev)
 276 {
 277         struct omap_abe_twl6040_data *pdata = dev_get_platdata(&pdev->dev);
 278         struct device_node *node = pdev->dev.of_node;
 279         struct snd_soc_card *card = &omap_abe_card;
 280         struct abe_twl6040 *priv;
 281         int num_links = 0;
 282         int ret = 0;
 283
 284         card->dev = &pdev->dev;
 285
 286         priv = devm_kzalloc(&pdev->dev, sizeof(struct abe_twl6040), GFP_KERNEL);
 287         if (priv == NULL)
 288                 return -ENOMEM;
 289
 290         priv->dmic_codec_dev = ERR_PTR(-EINVAL);
 291
 292         if (node) {
 293                 struct device_node *dai_node;
 294
 295                 if (snd_soc_of_parse_card_name(card, "ti,model")) {
 296                         dev_err(&pdev->dev, "Card name is not provided\n");
 297                         return -ENODEV;
 298                 }
 299
 300                 ret = snd_soc_of_parse_audio_routing(card,
 301                                                 "ti,audio-routing");
 302                 if (ret) {
 303                         dev_err(&pdev->dev,
 304                                 "Error while parsing DAPM routing\n");
 305                         return ret;
 306                 }
 307
 308                 dai_node = of_parse_phandle(node, "ti,mcpdm", 0);
 309                 if (!dai_node) {
 310                         dev_err(&pdev->dev, "McPDM node is not provided\n");
 311                         return -EINVAL;
 312                 }
 313                 abe_twl6040_dai_links[0].cpu_dai_name  = NULL;
 314                 abe_twl6040_dai_links[0].cpu_of_node = dai_node;
 315
 316                 dai_node = of_parse_phandle(node, "ti,dmic", 0);
 317                 if (dai_node) {
 318                         num_links = 2;
 319                         abe_twl6040_dai_links[1].cpu_dai_name  = NULL;
 320                         abe_twl6040_dai_links[1].cpu_of_node = dai_node;
 321
 322                         priv->dmic_codec_dev = platform_device_register_simple(
 323                                                 "dmic-codec", -1, NULL, 0);
 324                         if (IS_ERR(priv->dmic_codec_dev)) {
 325                                 dev_err(&pdev->dev,
 326                                         "Can't instantiate dmic-codec\n");
 327                                 return PTR_ERR(priv->dmic_codec_dev);
 328                         }
 329                 } else {
 330                         num_links = 1;
 331                 }
 332
 333                 priv->jack_detection = of_property_read_bool(node,
 334                                                            "ti,jack-detection");
 335                 of_property_read_u32(node, "ti,mclk-freq",
 336                                      &priv->mclk_freq);
 337                 if (!priv->mclk_freq) {
 338                         dev_err(&pdev->dev, "MCLK frequency not provided\n");
 339                         ret = -EINVAL;
 340                         goto err_unregister;
 341                 }
 342
 343                 omap_abe_card.fully_routed = 1;
 344         } else if (pdata) {
 345                 if (pdata->card_name) {
 346                         card->name = pdata->card_name;
 347                 } else {
 348                         dev_err(&pdev->dev, "Card name is not provided\n");
 349                         return -ENODEV;
 350                 }
 351
 352                 if (pdata->has_dmic)
 353                         num_links = 2;
 354                 else
 355                         num_links = 1;
 356
 357                 priv->jack_detection = pdata->jack_detection;
 358                 priv->mclk_freq = pdata->mclk_freq;
 359         } else {
 360                 dev_err(&pdev->dev, "Missing pdata\n");
 361                 return -ENODEV;
 362         }
 363
 364
 365         if (!priv->mclk_freq) {
 366                 dev_err(&pdev->dev, "MCLK frequency missing\n");
 367                 ret = -ENODEV;
 368                 goto err_unregister;
 369         }
 370
 371         card->dai_link = abe_twl6040_dai_links;
 372         card->num_links = num_links;
 373
 374         snd_soc_card_set_drvdata(card, priv);
 375
 376         ret = snd_soc_register_card(card);
 377         if (ret) {
 378                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 379                         ret);
 380                 goto err_unregister;
 381         }
 382
 383         return 0;
 384
 385 err_unregister:
 386         if (!IS_ERR(priv->dmic_codec_dev))
 387                 platform_device_unregister(priv->dmic_codec_dev);
 388
 389         return ret;
 390 }
 391
 392 static int omap_abe_remove(struct platform_device *pdev)
 393 {
 394         struct snd_soc_card *card = platform_get_drvdata(pdev);
 395         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
 396
 397         snd_soc_unregister_card(card);
 398
 399         if (!IS_ERR(priv->dmic_codec_dev))
 400                 platform_device_unregister(priv->dmic_codec_dev);
 401
 402         return 0;
 403 }
 404
 405 static const struct of_device_id omap_abe_of_match[] = {
 406         {.compatible = "ti,abe-twl6040", },
 407         { },
 408 };
 409 MODULE_DEVICE_TABLE(of, omap_abe_of_match);
 410
 411 static struct platform_driver omap_abe_driver = {
 412         .driver = {
 413                 .name = "omap-abe-twl6040",
 414                 .owner = THIS_MODULE,
 415                 .pm = &snd_soc_pm_ops,
 416                 .of_match_table = omap_abe_of_match,
 417         },
 418         .probe = omap_abe_probe,
 419         .remove = omap_abe_remove,
 420 };
 421
 422 module_platform_driver(omap_abe_driver);
 423
 424 MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
 425 MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec");
 426 MODULE_LICENSE("GPL");
 427 MODULE_ALIAS("platform:omap-abe-twl6040");