sound/soc/omap/omap-twl4030.c

   1 /*
   2  * omap-twl4030.c  --  SoC audio for TI SoC based boards with twl4030 codec
   3  *
   4  * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
   5  * All rights reserved.
   6  *
   7  * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
   8  *
   9  * This driver replaces the following machine drivers:
  10  * omap3beagle (Author: Steve Sakoman <steve@sakoman.com>)
  11  * omap3evm (Author: Anuj Aggarwal <anuj.aggarwal@ti.com>)
  12  * overo (Author: Steve Sakoman <steve@sakoman.com>)
  13  * igep0020 (Author: Enric Balletbo i Serra <eballetbo@iseebcn.com>)
  14  * zoom2 (Author: Misael Lopez Cruz <misael.lopez@ti.com>)
  15  * sdp3430 (Author: Misael Lopez Cruz <misael.lopez@ti.com>)
  16  *
  17  * This program is free software; you can redistribute it and/or
  18  * modify it under the terms of the GNU General Public License
  19  * version 2 as published by the Free Software Foundation.
  20  *
  21  * This program is distributed in the hope that it will be useful, but
  22  * WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  24  * General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  29  * 02110-1301 USA
  30  *
  31  */
  32
  33 #include <linux/platform_device.h>
  34 #include <linux/platform_data/omap-twl4030.h>
  35 #include <linux/module.h>
  36 #include <linux/of.h>
  37 #include <linux/gpio.h>
  38 #include <linux/of_gpio.h>
  39
  40 #include <sound/core.h>
  41 #include <sound/pcm.h>
  42 #include <sound/soc.h>
  43 #include <sound/jack.h>
  44
  45 #include "omap-mcbsp.h"
  46 #include "omap-pcm.h"
  47
  48 struct omap_twl4030 {
  49         int jack_detect;        /* board can detect jack events */
  50         struct snd_soc_jack hs_jack;
  51 };
  52
  53 static int omap_twl4030_hw_params(struct snd_pcm_substream *substream,
  54         struct snd_pcm_hw_params *params)
  55 {
  56         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  57         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  58         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  59         struct snd_soc_codec *codec = rtd->codec;
  60         struct snd_soc_card *card = codec->card;
  61         unsigned int fmt;
  62         int ret;
  63
  64         switch (params_channels(params)) {
  65         case 2: /* Stereo I2S mode */
  66                 fmt =   SND_SOC_DAIFMT_I2S |
  67                         SND_SOC_DAIFMT_NB_NF |
  68                         SND_SOC_DAIFMT_CBM_CFM;
  69                 break;
  70         case 4: /* Four channel TDM mode */
  71                 fmt =   SND_SOC_DAIFMT_DSP_A |
  72                         SND_SOC_DAIFMT_IB_NF |
  73                         SND_SOC_DAIFMT_CBM_CFM;
  74                 break;
  75         default:
  76                 return -EINVAL;
  77         }
  78
  79         /* Set codec DAI configuration */
  80         ret = snd_soc_dai_set_fmt(codec_dai, fmt);
  81         if (ret < 0) {
  82                 dev_err(card->dev, "can't set codec DAI configuration\n");
  83                 return ret;
  84         }
  85
  86         /* Set cpu DAI configuration */
  87         ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
  88         if (ret < 0) {
  89                 dev_err(card->dev, "can't set cpu DAI configuration\n");
  90                 return ret;
  91         }
  92
  93         return 0;
  94 }
  95
  96 static struct snd_soc_ops omap_twl4030_ops = {
  97         .hw_params = omap_twl4030_hw_params,
  98 };
  99
 100 static const struct snd_soc_dapm_widget dapm_widgets[] = {
 101         SND_SOC_DAPM_SPK("Earpiece Spk", NULL),
 102         SND_SOC_DAPM_SPK("Handsfree Spk", NULL),
 103         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 104         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 105         SND_SOC_DAPM_SPK("Carkit Spk", NULL),
 106
 107         SND_SOC_DAPM_MIC("Main Mic", NULL),
 108         SND_SOC_DAPM_MIC("Sub Mic", NULL),
 109         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 110         SND_SOC_DAPM_MIC("Carkit Mic", NULL),
 111         SND_SOC_DAPM_MIC("Digital0 Mic", NULL),
 112         SND_SOC_DAPM_MIC("Digital1 Mic", NULL),
 113         SND_SOC_DAPM_LINE("Line In", NULL),
 114 };
 115
 116 static const struct snd_soc_dapm_route audio_map[] = {
 117         /* Headset Stereophone:  HSOL, HSOR */
 118         {"Headset Stereophone", NULL, "HSOL"},
 119         {"Headset Stereophone", NULL, "HSOR"},
 120         /* External Speakers: HFL, HFR */
 121         {"Handsfree Spk", NULL, "HFL"},
 122         {"Handsfree Spk", NULL, "HFR"},
 123         /* External Speakers: PredrivL, PredrivR */
 124         {"Ext Spk", NULL, "PREDRIVEL"},
 125         {"Ext Spk", NULL, "PREDRIVER"},
 126         /* Carkit speakers:  CARKITL, CARKITR */
 127         {"Carkit Spk", NULL, "CARKITL"},
 128         {"Carkit Spk", NULL, "CARKITR"},
 129         /* Earpiece */
 130         {"Earpiece Spk", NULL, "EARPIECE"},
 131
 132         /* External Mics: MAINMIC, SUBMIC with bias */
 133         {"MAINMIC", NULL, "Main Mic"},
 134         {"Main Mic", NULL, "Mic Bias 1"},
 135         {"SUBMIC", NULL, "Sub Mic"},
 136         {"Sub Mic", NULL, "Mic Bias 2"},
 137         /* Headset Mic: HSMIC with bias */
 138         {"HSMIC", NULL, "Headset Mic"},
 139         {"Headset Mic", NULL, "Headset Mic Bias"},
 140         /* Digital Mics: DIGIMIC0, DIGIMIC1 with bias */
 141         {"DIGIMIC0", NULL, "Digital0 Mic"},
 142         {"Digital0 Mic", NULL, "Mic Bias 1"},
 143         {"DIGIMIC1", NULL, "Digital1 Mic"},
 144         {"Digital1 Mic", NULL, "Mic Bias 2"},
 145         /* Carkit In: CARKITMIC */
 146         {"CARKITMIC", NULL, "Carkit Mic"},
 147         /* Aux In: AUXL, AUXR */
 148         {"AUXL", NULL, "Line In"},
 149         {"AUXR", NULL, "Line In"},
 150 };
 151
 152 /* Headset jack detection DAPM pins */
 153 static struct snd_soc_jack_pin hs_jack_pins[] = {
 154         {
 155                 .pin = "Headset Mic",
 156                 .mask = SND_JACK_MICROPHONE,
 157         },
 158         {
 159                 .pin = "Headset Stereophone",
 160                 .mask = SND_JACK_HEADPHONE,
 161         },
 162 };
 163
 164 /* Headset jack detection gpios */
 165 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 166         {
 167                 .name = "hsdet-gpio",
 168                 .report = SND_JACK_HEADSET,
 169                 .debounce_time = 200,
 170         },
 171 };
 172
 173 static inline void twl4030_disconnect_pin(struct snd_soc_dapm_context *dapm,
 174                                           int connected, char *pin)
 175 {
 176         if (!connected)
 177                 snd_soc_dapm_disable_pin(dapm, pin);
 178 }
 179
 180 static int omap_twl4030_init(struct snd_soc_pcm_runtime *rtd)
 181 {
 182         struct snd_soc_codec *codec = rtd->codec;
 183         struct snd_soc_card *card = codec->card;
 184         struct snd_soc_dapm_context *dapm = &codec->dapm;
 185         struct omap_tw4030_pdata *pdata = dev_get_platdata(card->dev);
 186         struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
 187         int ret = 0;
 188
 189         /* Headset jack detection only if it is supported */
 190         if (priv->jack_detect > 0) {
 191                 hs_jack_gpios[0].gpio = priv->jack_detect;
 192
 193                 ret = snd_soc_jack_new(codec, "Headset Jack", SND_JACK_HEADSET,
 194                                        &priv->hs_jack);
 195                 if (ret)
 196                         return ret;
 197
 198                 ret = snd_soc_jack_add_pins(&priv->hs_jack,
 199                                             ARRAY_SIZE(hs_jack_pins),
 200                                             hs_jack_pins);
 201                 if (ret)
 202                         return ret;
 203
 204                 ret = snd_soc_jack_add_gpios(&priv->hs_jack,
 205                                              ARRAY_SIZE(hs_jack_gpios),
 206                                              hs_jack_gpios);
 207                 if (ret)
 208                         return ret;
 209         }
 210
 211         /*
 212          * NULL pdata means we booted with DT. In this case the routing is
 213          * provided and the card is fully routed, no need to mark pins.
 214          */
 215         if (!pdata || !pdata->custom_routing)
 216                 return ret;
 217
 218         /* Disable not connected paths if not used */
 219         twl4030_disconnect_pin(dapm, pdata->has_ear, "Earpiece Spk");
 220         twl4030_disconnect_pin(dapm, pdata->has_hf, "Handsfree Spk");
 221         twl4030_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
 222         twl4030_disconnect_pin(dapm, pdata->has_predriv, "Ext Spk");
 223         twl4030_disconnect_pin(dapm, pdata->has_carkit, "Carkit Spk");
 224
 225         twl4030_disconnect_pin(dapm, pdata->has_mainmic, "Main Mic");
 226         twl4030_disconnect_pin(dapm, pdata->has_submic, "Sub Mic");
 227         twl4030_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
 228         twl4030_disconnect_pin(dapm, pdata->has_carkitmic, "Carkit Mic");
 229         twl4030_disconnect_pin(dapm, pdata->has_digimic0, "Digital0 Mic");
 230         twl4030_disconnect_pin(dapm, pdata->has_digimic1, "Digital1 Mic");
 231         twl4030_disconnect_pin(dapm, pdata->has_linein, "Line In");
 232
 233         return ret;
 234 }
 235
 236 /* Digital audio interface glue - connects codec <--> CPU */
 237 static struct snd_soc_dai_link omap_twl4030_dai_links[] = {
 238         {
 239                 .name = "TWL4030 HiFi",
 240                 .stream_name = "TWL4030 HiFi",
 241                 .cpu_dai_name = "omap-mcbsp.2",
 242                 .codec_dai_name = "twl4030-hifi",
 243                 .platform_name = "omap-pcm-audio",
 244                 .codec_name = "twl4030-codec",
 245                 .init = omap_twl4030_init,
 246                 .ops = &omap_twl4030_ops,
 247         },
 248         {
 249                 .name = "TWL4030 Voice",
 250                 .stream_name = "TWL4030 Voice",
 251                 .cpu_dai_name = "omap-mcbsp.3",
 252                 .codec_dai_name = "twl4030-voice",
 253                 .platform_name = "omap-pcm-audio",
 254                 .codec_name = "twl4030-codec",
 255                 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
 256                            SND_SOC_DAIFMT_CBM_CFM,
 257         },
 258 };
 259
 260 /* Audio machine driver */
 261 static struct snd_soc_card omap_twl4030_card = {
 262         .owner = THIS_MODULE,
 263         .dai_link = omap_twl4030_dai_links,
 264         .num_links = ARRAY_SIZE(omap_twl4030_dai_links),
 265
 266         .dapm_widgets = dapm_widgets,
 267         .num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
 268         .dapm_routes = audio_map,
 269         .num_dapm_routes = ARRAY_SIZE(audio_map),
 270 };
 271
 272 static int omap_twl4030_probe(struct platform_device *pdev)
 273 {
 274         struct omap_tw4030_pdata *pdata = dev_get_platdata(&pdev->dev);
 275         struct device_node *node = pdev->dev.of_node;
 276         struct snd_soc_card *card = &omap_twl4030_card;
 277         struct omap_twl4030 *priv;
 278         int ret = 0;
 279
 280         card->dev = &pdev->dev;
 281
 282         priv = devm_kzalloc(&pdev->dev, sizeof(struct omap_twl4030), GFP_KERNEL);
 283         if (priv == NULL)
 284                 return -ENOMEM;
 285
 286         if (node) {
 287                 struct device_node *dai_node;
 288                 struct property *prop;
 289
 290                 if (snd_soc_of_parse_card_name(card, "ti,model")) {
 291                         dev_err(&pdev->dev, "Card name is not provided\n");
 292                         return -ENODEV;
 293                 }
 294
 295                 dai_node = of_parse_phandle(node, "ti,mcbsp", 0);
 296                 if (!dai_node) {
 297                         dev_err(&pdev->dev, "McBSP node is not provided\n");
 298                         return -EINVAL;
 299                 }
 300                 omap_twl4030_dai_links[0].cpu_dai_name  = NULL;
 301                 omap_twl4030_dai_links[0].cpu_of_node = dai_node;
 302
 303                 dai_node = of_parse_phandle(node, "ti,mcbsp-voice", 0);
 304                 if (!dai_node) {
 305                         card->num_links = 1;
 306                 } else {
 307                         omap_twl4030_dai_links[1].cpu_dai_name  = NULL;
 308                         omap_twl4030_dai_links[1].cpu_of_node = dai_node;
 309                 }
 310
 311                 priv->jack_detect = of_get_named_gpio(node,
 312                                                       "ti,jack-det-gpio", 0);
 313
 314                 /* Optional: audio routing can be provided */
 315                 prop = of_find_property(node, "ti,audio-routing", NULL);
 316                 if (prop) {
 317                         ret = snd_soc_of_parse_audio_routing(card,
 318                                                             "ti,audio-routing");
 319                         if (ret)
 320                                 return ret;
 321
 322                         card->fully_routed = 1;
 323                 }
 324         } else if (pdata) {
 325                 if (pdata->card_name) {
 326                         card->name = pdata->card_name;
 327                 } else {
 328                         dev_err(&pdev->dev, "Card name is not provided\n");
 329                         return -ENODEV;
 330                 }
 331
 332                 if (!pdata->voice_connected)
 333                         card->num_links = 1;
 334
 335                 priv->jack_detect = pdata->jack_detect;
 336         } else {
 337                 dev_err(&pdev->dev, "Missing pdata\n");
 338                 return -ENODEV;
 339         }
 340
 341         snd_soc_card_set_drvdata(card, priv);
 342         ret = snd_soc_register_card(card);
 343         if (ret) {
 344                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 345                         ret);
 346                 return ret;
 347         }
 348
 349         return 0;
 350 }
 351
 352 static int omap_twl4030_remove(struct platform_device *pdev)
 353 {
 354         struct snd_soc_card *card = platform_get_drvdata(pdev);
 355         struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
 356
 357         if (priv->jack_detect > 0)
 358                 snd_soc_jack_free_gpios(&priv->hs_jack,
 359                                         ARRAY_SIZE(hs_jack_gpios),
 360                                         hs_jack_gpios);
 361         snd_soc_unregister_card(card);
 362
 363         return 0;
 364 }
 365
 366 static const struct of_device_id omap_twl4030_of_match[] = {
 367         {.compatible = "ti,omap-twl4030", },
 368         { },
 369 };
 370 MODULE_DEVICE_TABLE(of, omap_twl4030_of_match);
 371
 372 static struct platform_driver omap_twl4030_driver = {
 373         .driver = {
 374                 .name = "omap-twl4030",
 375                 .owner = THIS_MODULE,
 376                 .pm = &snd_soc_pm_ops,
 377                 .of_match_table = omap_twl4030_of_match,
 378         },
 379         .probe = omap_twl4030_probe,
 380         .remove = omap_twl4030_remove,
 381 };
 382
 383 module_platform_driver(omap_twl4030_driver);
 384
 385 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
 386 MODULE_DESCRIPTION("ALSA SoC for TI SoC based boards with twl4030 codec");
 387 MODULE_LICENSE("GPL");
 388 MODULE_ALIAS("platform:omap-twl4030");