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