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