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         unsigned int fmt;
  57
  58         switch (params_channels(params)) {
  59         case 2: /* Stereo I2S mode */
  60                 fmt =   SND_SOC_DAIFMT_I2S |
  61                         SND_SOC_DAIFMT_NB_NF |
  62                         SND_SOC_DAIFMT_CBM_CFM;
  63                 break;
  64         case 4: /* Four channel TDM mode */
  65                 fmt =   SND_SOC_DAIFMT_DSP_A |
  66                         SND_SOC_DAIFMT_IB_NF |
  67                         SND_SOC_DAIFMT_CBM_CFM;
  68                 break;
  69         default:
  70                 return -EINVAL;
  71         }
  72
  73         return snd_soc_runtime_set_dai_fmt(rtd, fmt);
  74 }
  75
  76 static struct snd_soc_ops omap_twl4030_ops = {
  77         .hw_params = omap_twl4030_hw_params,
  78 };
  79
  80 static const struct snd_soc_dapm_widget dapm_widgets[] = {
  81         SND_SOC_DAPM_SPK("Earpiece Spk", NULL),
  82         SND_SOC_DAPM_SPK("Handsfree Spk", NULL),
  83         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
  84         SND_SOC_DAPM_SPK("Ext Spk", NULL),
  85         SND_SOC_DAPM_SPK("Carkit Spk", NULL),
  86
  87         SND_SOC_DAPM_MIC("Main Mic", NULL),
  88         SND_SOC_DAPM_MIC("Sub Mic", NULL),
  89         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  90         SND_SOC_DAPM_MIC("Carkit Mic", NULL),
  91         SND_SOC_DAPM_MIC("Digital0 Mic", NULL),
  92         SND_SOC_DAPM_MIC("Digital1 Mic", NULL),
  93         SND_SOC_DAPM_LINE("Line In", NULL),
  94 };
  95
  96 static const struct snd_soc_dapm_route audio_map[] = {
  97         /* Headset Stereophone:  HSOL, HSOR */
  98         {"Headset Stereophone", NULL, "HSOL"},
  99         {"Headset Stereophone", NULL, "HSOR"},
 100         /* External Speakers: HFL, HFR */
 101         {"Handsfree Spk", NULL, "HFL"},
 102         {"Handsfree Spk", NULL, "HFR"},
 103         /* External Speakers: PredrivL, PredrivR */
 104         {"Ext Spk", NULL, "PREDRIVEL"},
 105         {"Ext Spk", NULL, "PREDRIVER"},
 106         /* Carkit speakers:  CARKITL, CARKITR */
 107         {"Carkit Spk", NULL, "CARKITL"},
 108         {"Carkit Spk", NULL, "CARKITR"},
 109         /* Earpiece */
 110         {"Earpiece Spk", NULL, "EARPIECE"},
 111
 112         /* External Mics: MAINMIC, SUBMIC with bias */
 113         {"MAINMIC", NULL, "Main Mic"},
 114         {"Main Mic", NULL, "Mic Bias 1"},
 115         {"SUBMIC", NULL, "Sub Mic"},
 116         {"Sub Mic", NULL, "Mic Bias 2"},
 117         /* Headset Mic: HSMIC with bias */
 118         {"HSMIC", NULL, "Headset Mic"},
 119         {"Headset Mic", NULL, "Headset Mic Bias"},
 120         /* Digital Mics: DIGIMIC0, DIGIMIC1 with bias */
 121         {"DIGIMIC0", NULL, "Digital0 Mic"},
 122         {"Digital0 Mic", NULL, "Mic Bias 1"},
 123         {"DIGIMIC1", NULL, "Digital1 Mic"},
 124         {"Digital1 Mic", NULL, "Mic Bias 2"},
 125         /* Carkit In: CARKITMIC */
 126         {"CARKITMIC", NULL, "Carkit Mic"},
 127         /* Aux In: AUXL, AUXR */
 128         {"AUXL", NULL, "Line In"},
 129         {"AUXR", NULL, "Line In"},
 130 };
 131
 132 /* Headset jack detection DAPM pins */
 133 static struct snd_soc_jack_pin hs_jack_pins[] = {
 134         {
 135                 .pin = "Headset Mic",
 136                 .mask = SND_JACK_MICROPHONE,
 137         },
 138         {
 139                 .pin = "Headset Stereophone",
 140                 .mask = SND_JACK_HEADPHONE,
 141         },
 142 };
 143
 144 /* Headset jack detection gpios */
 145 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 146         {
 147                 .name = "hsdet-gpio",
 148                 .report = SND_JACK_HEADSET,
 149                 .debounce_time = 200,
 150         },
 151 };
 152
 153 static inline void twl4030_disconnect_pin(struct snd_soc_dapm_context *dapm,
 154                                           int connected, char *pin)
 155 {
 156         if (!connected)
 157                 snd_soc_dapm_disable_pin(dapm, pin);
 158 }
 159
 160 static int omap_twl4030_init(struct snd_soc_pcm_runtime *rtd)
 161 {
 162         struct snd_soc_codec *codec = rtd->codec;
 163         struct snd_soc_card *card = rtd->card;
 164         struct snd_soc_dapm_context *dapm = &codec->dapm;
 165         struct omap_tw4030_pdata *pdata = dev_get_platdata(card->dev);
 166         struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
 167         int ret = 0;
 168
 169         /* Headset jack detection only if it is supported */
 170         if (priv->jack_detect > 0) {
 171                 hs_jack_gpios[0].gpio = priv->jack_detect;
 172
 173                 ret = snd_soc_jack_new(codec, "Headset Jack", SND_JACK_HEADSET,
 174                                        &priv->hs_jack);
 175                 if (ret)
 176                         return ret;
 177
 178                 ret = snd_soc_jack_add_pins(&priv->hs_jack,
 179                                             ARRAY_SIZE(hs_jack_pins),
 180                                             hs_jack_pins);
 181                 if (ret)
 182                         return ret;
 183
 184                 ret = snd_soc_jack_add_gpios(&priv->hs_jack,
 185                                              ARRAY_SIZE(hs_jack_gpios),
 186                                              hs_jack_gpios);
 187                 if (ret)
 188                         return ret;
 189         }
 190
 191         /*
 192          * NULL pdata means we booted with DT. In this case the routing is
 193          * provided and the card is fully routed, no need to mark pins.
 194          */
 195         if (!pdata || !pdata->custom_routing)
 196                 return ret;
 197
 198         /* Disable not connected paths if not used */
 199         twl4030_disconnect_pin(dapm, pdata->has_ear, "Earpiece Spk");
 200         twl4030_disconnect_pin(dapm, pdata->has_hf, "Handsfree Spk");
 201         twl4030_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
 202         twl4030_disconnect_pin(dapm, pdata->has_predriv, "Ext Spk");
 203         twl4030_disconnect_pin(dapm, pdata->has_carkit, "Carkit Spk");
 204
 205         twl4030_disconnect_pin(dapm, pdata->has_mainmic, "Main Mic");
 206         twl4030_disconnect_pin(dapm, pdata->has_submic, "Sub Mic");
 207         twl4030_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
 208         twl4030_disconnect_pin(dapm, pdata->has_carkitmic, "Carkit Mic");
 209         twl4030_disconnect_pin(dapm, pdata->has_digimic0, "Digital0 Mic");
 210         twl4030_disconnect_pin(dapm, pdata->has_digimic1, "Digital1 Mic");
 211         twl4030_disconnect_pin(dapm, pdata->has_linein, "Line In");
 212
 213         return ret;
 214 }
 215
 216 static int omap_twl4030_card_remove(struct snd_soc_card *card)
 217 {
 218         struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
 219
 220         if (priv->jack_detect > 0)
 221                 snd_soc_jack_free_gpios(&priv->hs_jack,
 222                                         ARRAY_SIZE(hs_jack_gpios),
 223                                         hs_jack_gpios);
 224
 225         return 0;
 226 }
 227
 228 /* Digital audio interface glue - connects codec <--> CPU */
 229 static struct snd_soc_dai_link omap_twl4030_dai_links[] = {
 230         {
 231                 .name = "TWL4030 HiFi",
 232                 .stream_name = "TWL4030 HiFi",
 233                 .cpu_dai_name = "omap-mcbsp.2",
 234                 .codec_dai_name = "twl4030-hifi",
 235                 .platform_name = "omap-mcbsp.2",
 236                 .codec_name = "twl4030-codec",
 237                 .init = omap_twl4030_init,
 238                 .ops = &omap_twl4030_ops,
 239         },
 240         {
 241                 .name = "TWL4030 Voice",
 242                 .stream_name = "TWL4030 Voice",
 243                 .cpu_dai_name = "omap-mcbsp.3",
 244                 .codec_dai_name = "twl4030-voice",
 245                 .platform_name = "omap-mcbsp.3",
 246                 .codec_name = "twl4030-codec",
 247                 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
 248                            SND_SOC_DAIFMT_CBM_CFM,
 249         },
 250 };
 251
 252 /* Audio machine driver */
 253 static struct snd_soc_card omap_twl4030_card = {
 254         .owner = THIS_MODULE,
 255         .remove = omap_twl4030_card_remove,
 256         .dai_link = omap_twl4030_dai_links,
 257         .num_links = ARRAY_SIZE(omap_twl4030_dai_links),
 258
 259         .dapm_widgets = dapm_widgets,
 260         .num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
 261         .dapm_routes = audio_map,
 262         .num_dapm_routes = ARRAY_SIZE(audio_map),
 263 };
 264
 265 static int omap_twl4030_probe(struct platform_device *pdev)
 266 {
 267         struct omap_tw4030_pdata *pdata = dev_get_platdata(&pdev->dev);
 268         struct device_node *node = pdev->dev.of_node;
 269         struct snd_soc_card *card = &omap_twl4030_card;
 270         struct omap_twl4030 *priv;
 271         int ret = 0;
 272
 273         card->dev = &pdev->dev;
 274
 275         priv = devm_kzalloc(&pdev->dev, sizeof(struct omap_twl4030), GFP_KERNEL);
 276         if (priv == NULL)
 277                 return -ENOMEM;
 278
 279         if (node) {
 280                 struct device_node *dai_node;
 281                 struct property *prop;
 282
 283                 if (snd_soc_of_parse_card_name(card, "ti,model")) {
 284                         dev_err(&pdev->dev, "Card name is not provided\n");
 285                         return -ENODEV;
 286                 }
 287
 288                 dai_node = of_parse_phandle(node, "ti,mcbsp", 0);
 289                 if (!dai_node) {
 290                         dev_err(&pdev->dev, "McBSP node is not provided\n");
 291                         return -EINVAL;
 292                 }
 293                 omap_twl4030_dai_links[0].cpu_dai_name  = NULL;
 294                 omap_twl4030_dai_links[0].cpu_of_node = dai_node;
 295
 296                 omap_twl4030_dai_links[0].platform_name  = NULL;
 297                 omap_twl4030_dai_links[0].platform_of_node = dai_node;
 298
 299                 dai_node = of_parse_phandle(node, "ti,mcbsp-voice", 0);
 300                 if (!dai_node) {
 301                         card->num_links = 1;
 302                 } else {
 303                         omap_twl4030_dai_links[1].cpu_dai_name  = NULL;
 304                         omap_twl4030_dai_links[1].cpu_of_node = dai_node;
 305
 306                         omap_twl4030_dai_links[1].platform_name  = NULL;
 307                         omap_twl4030_dai_links[1].platform_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 = devm_snd_soc_register_card(&pdev->dev, card);
 342         if (ret) {
 343                 dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n",
 344                         ret);
 345                 return ret;
 346         }
 347
 348         return 0;
 349 }
 350
 351 static const struct of_device_id omap_twl4030_of_match[] = {
 352         {.compatible = "ti,omap-twl4030", },
 353         { },
 354 };
 355 MODULE_DEVICE_TABLE(of, omap_twl4030_of_match);
 356
 357 static struct platform_driver omap_twl4030_driver = {
 358         .driver = {
 359                 .name = "omap-twl4030",
 360                 .pm = &snd_soc_pm_ops,
 361                 .of_match_table = omap_twl4030_of_match,
 362         },
 363         .probe = omap_twl4030_probe,
 364 };
 365
 366 module_platform_driver(omap_twl4030_driver);
 367
 368 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
 369 MODULE_DESCRIPTION("ALSA SoC for TI SoC based boards with twl4030 codec");
 370 MODULE_LICENSE("GPL");
 371 MODULE_ALIAS("platform:omap-twl4030");