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_card *card = rtd->card;
  59         unsigned int fmt;
  60         int ret;
  61
  62         switch (params_channels(params)) {
  63         case 2: /* Stereo I2S mode */
  64                 fmt =   SND_SOC_DAIFMT_I2S |
  65                         SND_SOC_DAIFMT_NB_NF |
  66                         SND_SOC_DAIFMT_CBM_CFM;
  67                 break;
  68         case 4: /* Four channel TDM mode */
  69                 fmt =   SND_SOC_DAIFMT_DSP_A |
  70                         SND_SOC_DAIFMT_IB_NF |
  71                         SND_SOC_DAIFMT_CBM_CFM;
  72                 break;
  73         default:
  74                 return -EINVAL;
  75         }
  76
  77         /* Set codec DAI configuration */
  78         ret = snd_soc_dai_set_fmt(codec_dai, fmt);
  79         if (ret < 0) {
  80                 dev_err(card->dev, "can't set codec DAI configuration\n");
  81                 return ret;
  82         }
  83
  84         /* Set cpu DAI configuration */
  85         ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
  86         if (ret < 0) {
  87                 dev_err(card->dev, "can't set cpu DAI configuration\n");
  88                 return ret;
  89         }
  90
  91         return 0;
  92 }
  93
  94 static struct snd_soc_ops omap_twl4030_ops = {
  95         .hw_params = omap_twl4030_hw_params,
  96 };
  97
  98 static const struct snd_soc_dapm_widget dapm_widgets[] = {
  99         SND_SOC_DAPM_SPK("Earpiece Spk", NULL),
 100         SND_SOC_DAPM_SPK("Handsfree Spk", NULL),
 101         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 102         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 103         SND_SOC_DAPM_SPK("Carkit Spk", NULL),
 104
 105         SND_SOC_DAPM_MIC("Main Mic", NULL),
 106         SND_SOC_DAPM_MIC("Sub Mic", NULL),
 107         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 108         SND_SOC_DAPM_MIC("Carkit Mic", NULL),
 109         SND_SOC_DAPM_MIC("Digital0 Mic", NULL),
 110         SND_SOC_DAPM_MIC("Digital1 Mic", NULL),
 111         SND_SOC_DAPM_LINE("Line In", NULL),
 112 };
 113
 114 static const struct snd_soc_dapm_route audio_map[] = {
 115         /* Headset Stereophone:  HSOL, HSOR */
 116         {"Headset Stereophone", NULL, "HSOL"},
 117         {"Headset Stereophone", NULL, "HSOR"},
 118         /* External Speakers: HFL, HFR */
 119         {"Handsfree Spk", NULL, "HFL"},
 120         {"Handsfree Spk", NULL, "HFR"},
 121         /* External Speakers: PredrivL, PredrivR */
 122         {"Ext Spk", NULL, "PREDRIVEL"},
 123         {"Ext Spk", NULL, "PREDRIVER"},
 124         /* Carkit speakers:  CARKITL, CARKITR */
 125         {"Carkit Spk", NULL, "CARKITL"},
 126         {"Carkit Spk", NULL, "CARKITR"},
 127         /* Earpiece */
 128         {"Earpiece Spk", NULL, "EARPIECE"},
 129
 130         /* External Mics: MAINMIC, SUBMIC with bias */
 131         {"MAINMIC", NULL, "Main Mic"},
 132         {"Main Mic", NULL, "Mic Bias 1"},
 133         {"SUBMIC", NULL, "Sub Mic"},
 134         {"Sub Mic", NULL, "Mic Bias 2"},
 135         /* Headset Mic: HSMIC with bias */
 136         {"HSMIC", NULL, "Headset Mic"},
 137         {"Headset Mic", NULL, "Headset Mic Bias"},
 138         /* Digital Mics: DIGIMIC0, DIGIMIC1 with bias */
 139         {"DIGIMIC0", NULL, "Digital0 Mic"},
 140         {"Digital0 Mic", NULL, "Mic Bias 1"},
 141         {"DIGIMIC1", NULL, "Digital1 Mic"},
 142         {"Digital1 Mic", NULL, "Mic Bias 2"},
 143         /* Carkit In: CARKITMIC */
 144         {"CARKITMIC", NULL, "Carkit Mic"},
 145         /* Aux In: AUXL, AUXR */
 146         {"AUXL", NULL, "Line In"},
 147         {"AUXR", NULL, "Line In"},
 148 };
 149
 150 /* Headset jack detection DAPM pins */
 151 static struct snd_soc_jack_pin hs_jack_pins[] = {
 152         {
 153                 .pin = "Headset Mic",
 154                 .mask = SND_JACK_MICROPHONE,
 155         },
 156         {
 157                 .pin = "Headset Stereophone",
 158                 .mask = SND_JACK_HEADPHONE,
 159         },
 160 };
 161
 162 /* Headset jack detection gpios */
 163 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 164         {
 165                 .name = "hsdet-gpio",
 166                 .report = SND_JACK_HEADSET,
 167                 .debounce_time = 200,
 168         },
 169 };
 170
 171 static inline void twl4030_disconnect_pin(struct snd_soc_dapm_context *dapm,
 172                                           int connected, char *pin)
 173 {
 174         if (!connected)
 175                 snd_soc_dapm_disable_pin(dapm, pin);
 176 }
 177
 178 static int omap_twl4030_init(struct snd_soc_pcm_runtime *rtd)
 179 {
 180         struct snd_soc_codec *codec = rtd->codec;
 181         struct snd_soc_card *card = rtd->card;
 182         struct snd_soc_dapm_context *dapm = &codec->dapm;
 183         struct omap_tw4030_pdata *pdata = dev_get_platdata(card->dev);
 184         struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
 185         int ret = 0;
 186
 187         /* Headset jack detection only if it is supported */
 188         if (priv->jack_detect > 0) {
 189                 hs_jack_gpios[0].gpio = priv->jack_detect;
 190
 191                 ret = snd_soc_jack_new(codec, "Headset Jack", SND_JACK_HEADSET,
 192                                        &priv->hs_jack);
 193                 if (ret)
 194                         return ret;
 195
 196                 ret = snd_soc_jack_add_pins(&priv->hs_jack,
 197                                             ARRAY_SIZE(hs_jack_pins),
 198                                             hs_jack_pins);
 199                 if (ret)
 200                         return ret;
 201
 202                 ret = snd_soc_jack_add_gpios(&priv->hs_jack,
 203                                              ARRAY_SIZE(hs_jack_gpios),
 204                                              hs_jack_gpios);
 205                 if (ret)
 206                         return ret;
 207         }
 208
 209         /*
 210          * NULL pdata means we booted with DT. In this case the routing is
 211          * provided and the card is fully routed, no need to mark pins.
 212          */
 213         if (!pdata || !pdata->custom_routing)
 214                 return ret;
 215
 216         /* Disable not connected paths if not used */
 217         twl4030_disconnect_pin(dapm, pdata->has_ear, "Earpiece Spk");
 218         twl4030_disconnect_pin(dapm, pdata->has_hf, "Handsfree Spk");
 219         twl4030_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
 220         twl4030_disconnect_pin(dapm, pdata->has_predriv, "Ext Spk");
 221         twl4030_disconnect_pin(dapm, pdata->has_carkit, "Carkit Spk");
 222
 223         twl4030_disconnect_pin(dapm, pdata->has_mainmic, "Main Mic");
 224         twl4030_disconnect_pin(dapm, pdata->has_submic, "Sub Mic");
 225         twl4030_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
 226         twl4030_disconnect_pin(dapm, pdata->has_carkitmic, "Carkit Mic");
 227         twl4030_disconnect_pin(dapm, pdata->has_digimic0, "Digital0 Mic");
 228         twl4030_disconnect_pin(dapm, pdata->has_digimic1, "Digital1 Mic");
 229         twl4030_disconnect_pin(dapm, pdata->has_linein, "Line In");
 230
 231         return ret;
 232 }
 233
 234 static int omap_twl4030_card_remove(struct snd_soc_card *card)
 235 {
 236         struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
 237
 238         if (priv->jack_detect > 0)
 239                 snd_soc_jack_free_gpios(&priv->hs_jack,
 240                                         ARRAY_SIZE(hs_jack_gpios),
 241                                         hs_jack_gpios);
 242
 243         return 0;
 244 }
 245
 246 /* Digital audio interface glue - connects codec <--> CPU */
 247 static struct snd_soc_dai_link omap_twl4030_dai_links[] = {
 248         {
 249                 .name = "TWL4030 HiFi",
 250                 .stream_name = "TWL4030 HiFi",
 251                 .cpu_dai_name = "omap-mcbsp.2",
 252                 .codec_dai_name = "twl4030-hifi",
 253                 .platform_name = "omap-mcbsp.2",
 254                 .codec_name = "twl4030-codec",
 255                 .init = omap_twl4030_init,
 256                 .ops = &omap_twl4030_ops,
 257         },
 258         {
 259                 .name = "TWL4030 Voice",
 260                 .stream_name = "TWL4030 Voice",
 261                 .cpu_dai_name = "omap-mcbsp.3",
 262                 .codec_dai_name = "twl4030-voice",
 263                 .platform_name = "omap-mcbsp.3",
 264                 .codec_name = "twl4030-codec",
 265                 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
 266                            SND_SOC_DAIFMT_CBM_CFM,
 267         },
 268 };
 269
 270 /* Audio machine driver */
 271 static struct snd_soc_card omap_twl4030_card = {
 272         .owner = THIS_MODULE,
 273         .remove = omap_twl4030_card_remove,
 274         .dai_link = omap_twl4030_dai_links,
 275         .num_links = ARRAY_SIZE(omap_twl4030_dai_links),
 276
 277         .dapm_widgets = dapm_widgets,
 278         .num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
 279         .dapm_routes = audio_map,
 280         .num_dapm_routes = ARRAY_SIZE(audio_map),
 281 };
 282
 283 static int omap_twl4030_probe(struct platform_device *pdev)
 284 {
 285         struct omap_tw4030_pdata *pdata = dev_get_platdata(&pdev->dev);
 286         struct device_node *node = pdev->dev.of_node;
 287         struct snd_soc_card *card = &omap_twl4030_card;
 288         struct omap_twl4030 *priv;
 289         int ret = 0;
 290
 291         card->dev = &pdev->dev;
 292
 293         priv = devm_kzalloc(&pdev->dev, sizeof(struct omap_twl4030), GFP_KERNEL);
 294         if (priv == NULL)
 295                 return -ENOMEM;
 296
 297         if (node) {
 298                 struct device_node *dai_node;
 299                 struct property *prop;
 300
 301                 if (snd_soc_of_parse_card_name(card, "ti,model")) {
 302                         dev_err(&pdev->dev, "Card name is not provided\n");
 303                         return -ENODEV;
 304                 }
 305
 306                 dai_node = of_parse_phandle(node, "ti,mcbsp", 0);
 307                 if (!dai_node) {
 308                         dev_err(&pdev->dev, "McBSP node is not provided\n");
 309                         return -EINVAL;
 310                 }
 311                 omap_twl4030_dai_links[0].cpu_dai_name  = NULL;
 312                 omap_twl4030_dai_links[0].cpu_of_node = dai_node;
 313
 314                 omap_twl4030_dai_links[0].platform_name  = NULL;
 315                 omap_twl4030_dai_links[0].platform_of_node = dai_node;
 316
 317                 dai_node = of_parse_phandle(node, "ti,mcbsp-voice", 0);
 318                 if (!dai_node) {
 319                         card->num_links = 1;
 320                 } else {
 321                         omap_twl4030_dai_links[1].cpu_dai_name  = NULL;
 322                         omap_twl4030_dai_links[1].cpu_of_node = dai_node;
 323
 324                         omap_twl4030_dai_links[1].platform_name  = NULL;
 325                         omap_twl4030_dai_links[1].platform_of_node = dai_node;
 326                 }
 327
 328                 priv->jack_detect = of_get_named_gpio(node,
 329                                                       "ti,jack-det-gpio", 0);
 330
 331                 /* Optional: audio routing can be provided */
 332                 prop = of_find_property(node, "ti,audio-routing", NULL);
 333                 if (prop) {
 334                         ret = snd_soc_of_parse_audio_routing(card,
 335                                                             "ti,audio-routing");
 336                         if (ret)
 337                                 return ret;
 338
 339                         card->fully_routed = 1;
 340                 }
 341         } else if (pdata) {
 342                 if (pdata->card_name) {
 343                         card->name = pdata->card_name;
 344                 } else {
 345                         dev_err(&pdev->dev, "Card name is not provided\n");
 346                         return -ENODEV;
 347                 }
 348
 349                 if (!pdata->voice_connected)
 350                         card->num_links = 1;
 351
 352                 priv->jack_detect = pdata->jack_detect;
 353         } else {
 354                 dev_err(&pdev->dev, "Missing pdata\n");
 355                 return -ENODEV;
 356         }
 357
 358         snd_soc_card_set_drvdata(card, priv);
 359         ret = devm_snd_soc_register_card(&pdev->dev, card);
 360         if (ret) {
 361                 dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n",
 362                         ret);
 363                 return ret;
 364         }
 365
 366         return 0;
 367 }
 368
 369 static const struct of_device_id omap_twl4030_of_match[] = {
 370         {.compatible = "ti,omap-twl4030", },
 371         { },
 372 };
 373 MODULE_DEVICE_TABLE(of, omap_twl4030_of_match);
 374
 375 static struct platform_driver omap_twl4030_driver = {
 376         .driver = {
 377                 .name = "omap-twl4030",
 378                 .pm = &snd_soc_pm_ops,
 379                 .of_match_table = omap_twl4030_of_match,
 380         },
 381         .probe = omap_twl4030_probe,
 382 };
 383
 384 module_platform_driver(omap_twl4030_driver);
 385
 386 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
 387 MODULE_DESCRIPTION("ALSA SoC for TI SoC based boards with twl4030 codec");
 388 MODULE_LICENSE("GPL");
 389 MODULE_ALIAS("platform:omap-twl4030");