kernel/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_card_jack_new(rtd->card, "Headset Jack",
 174                                             SND_JACK_HEADSET, &priv->hs_jack,
 175                                             hs_jack_pins,
 176                                             ARRAY_SIZE(hs_jack_pins));
 177                 if (ret)
 178                         return ret;
 179
 180                 ret = snd_soc_jack_add_gpios(&priv->hs_jack,
 181                                              ARRAY_SIZE(hs_jack_gpios),
 182                                              hs_jack_gpios);
 183                 if (ret)
 184                         return ret;
 185         }
 186
 187         /*
 188          * NULL pdata means we booted with DT. In this case the routing is
 189          * provided and the card is fully routed, no need to mark pins.
 190          */
 191         if (!pdata || !pdata->custom_routing)
 192                 return ret;
 193
 194         /* Disable not connected paths if not used */
 195         twl4030_disconnect_pin(dapm, pdata->has_ear, "Earpiece Spk");
 196         twl4030_disconnect_pin(dapm, pdata->has_hf, "Handsfree Spk");
 197         twl4030_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
 198         twl4030_disconnect_pin(dapm, pdata->has_predriv, "Ext Spk");
 199         twl4030_disconnect_pin(dapm, pdata->has_carkit, "Carkit Spk");
 200
 201         twl4030_disconnect_pin(dapm, pdata->has_mainmic, "Main Mic");
 202         twl4030_disconnect_pin(dapm, pdata->has_submic, "Sub Mic");
 203         twl4030_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
 204         twl4030_disconnect_pin(dapm, pdata->has_carkitmic, "Carkit Mic");
 205         twl4030_disconnect_pin(dapm, pdata->has_digimic0, "Digital0 Mic");
 206         twl4030_disconnect_pin(dapm, pdata->has_digimic1, "Digital1 Mic");
 207         twl4030_disconnect_pin(dapm, pdata->has_linein, "Line In");
 208
 209         return ret;
 210 }
 211
 212 static int omap_twl4030_card_remove(struct snd_soc_card *card)
 213 {
 214         struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
 215
 216         if (priv->jack_detect > 0)
 217                 snd_soc_jack_free_gpios(&priv->hs_jack,
 218                                         ARRAY_SIZE(hs_jack_gpios),
 219                                         hs_jack_gpios);
 220
 221         return 0;
 222 }
 223
 224 /* Digital audio interface glue - connects codec <--> CPU */
 225 static struct snd_soc_dai_link omap_twl4030_dai_links[] = {
 226         {
 227                 .name = "TWL4030 HiFi",
 228                 .stream_name = "TWL4030 HiFi",
 229                 .cpu_dai_name = "omap-mcbsp.2",
 230                 .codec_dai_name = "twl4030-hifi",
 231                 .platform_name = "omap-mcbsp.2",
 232                 .codec_name = "twl4030-codec",
 233                 .init = omap_twl4030_init,
 234                 .ops = &omap_twl4030_ops,
 235         },
 236         {
 237                 .name = "TWL4030 Voice",
 238                 .stream_name = "TWL4030 Voice",
 239                 .cpu_dai_name = "omap-mcbsp.3",
 240                 .codec_dai_name = "twl4030-voice",
 241                 .platform_name = "omap-mcbsp.3",
 242                 .codec_name = "twl4030-codec",
 243                 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
 244                            SND_SOC_DAIFMT_CBM_CFM,
 245         },
 246 };
 247
 248 /* Audio machine driver */
 249 static struct snd_soc_card omap_twl4030_card = {
 250         .owner = THIS_MODULE,
 251         .remove = omap_twl4030_card_remove,
 252         .dai_link = omap_twl4030_dai_links,
 253         .num_links = ARRAY_SIZE(omap_twl4030_dai_links),
 254
 255         .dapm_widgets = dapm_widgets,
 256         .num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
 257         .dapm_routes = audio_map,
 258         .num_dapm_routes = ARRAY_SIZE(audio_map),
 259 };
 260
 261 static int omap_twl4030_probe(struct platform_device *pdev)
 262 {
 263         struct omap_tw4030_pdata *pdata = dev_get_platdata(&pdev->dev);
 264         struct device_node *node = pdev->dev.of_node;
 265         struct snd_soc_card *card = &omap_twl4030_card;
 266         struct omap_twl4030 *priv;
 267         int ret = 0;
 268
 269         card->dev = &pdev->dev;
 270
 271         priv = devm_kzalloc(&pdev->dev, sizeof(struct omap_twl4030), GFP_KERNEL);
 272         if (priv == NULL)
 273                 return -ENOMEM;
 274
 275         if (node) {
 276                 struct device_node *dai_node;
 277                 struct property *prop;
 278
 279                 if (snd_soc_of_parse_card_name(card, "ti,model")) {
 280                         dev_err(&pdev->dev, "Card name is not provided\n");
 281                         return -ENODEV;
 282                 }
 283
 284                 dai_node = of_parse_phandle(node, "ti,mcbsp", 0);
 285                 if (!dai_node) {
 286                         dev_err(&pdev->dev, "McBSP node is not provided\n");
 287                         return -EINVAL;
 288                 }
 289                 omap_twl4030_dai_links[0].cpu_dai_name  = NULL;
 290                 omap_twl4030_dai_links[0].cpu_of_node = dai_node;
 291
 292                 omap_twl4030_dai_links[0].platform_name  = NULL;
 293                 omap_twl4030_dai_links[0].platform_of_node = dai_node;
 294
 295                 dai_node = of_parse_phandle(node, "ti,mcbsp-voice", 0);
 296                 if (!dai_node) {
 297                         card->num_links = 1;
 298                 } else {
 299                         omap_twl4030_dai_links[1].cpu_dai_name  = NULL;
 300                         omap_twl4030_dai_links[1].cpu_of_node = dai_node;
 301
 302                         omap_twl4030_dai_links[1].platform_name  = NULL;
 303                         omap_twl4030_dai_links[1].platform_of_node = dai_node;
 304                 }
 305
 306                 priv->jack_detect = of_get_named_gpio(node,
 307                                                       "ti,jack-det-gpio", 0);
 308
 309                 /* Optional: audio routing can be provided */
 310                 prop = of_find_property(node, "ti,audio-routing", NULL);
 311                 if (prop) {
 312                         ret = snd_soc_of_parse_audio_routing(card,
 313                                                             "ti,audio-routing");
 314                         if (ret)
 315                                 return ret;
 316
 317                         card->fully_routed = 1;
 318                 }
 319         } else if (pdata) {
 320                 if (pdata->card_name) {
 321                         card->name = pdata->card_name;
 322                 } else {
 323                         dev_err(&pdev->dev, "Card name is not provided\n");
 324                         return -ENODEV;
 325                 }
 326
 327                 if (!pdata->voice_connected)
 328                         card->num_links = 1;
 329
 330                 priv->jack_detect = pdata->jack_detect;
 331         } else {
 332                 dev_err(&pdev->dev, "Missing pdata\n");
 333                 return -ENODEV;
 334         }
 335
 336         snd_soc_card_set_drvdata(card, priv);
 337         ret = devm_snd_soc_register_card(&pdev->dev, card);
 338         if (ret) {
 339                 dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n",
 340                         ret);
 341                 return ret;
 342         }
 343
 344         return 0;
 345 }
 346
 347 static const struct of_device_id omap_twl4030_of_match[] = {
 348         {.compatible = "ti,omap-twl4030", },
 349         { },
 350 };
 351 MODULE_DEVICE_TABLE(of, omap_twl4030_of_match);
 352
 353 static struct platform_driver omap_twl4030_driver = {
 354         .driver = {
 355                 .name = "omap-twl4030",
 356                 .pm = &snd_soc_pm_ops,
 357                 .of_match_table = omap_twl4030_of_match,
 358         },
 359         .probe = omap_twl4030_probe,
 360 };
 361
 362 module_platform_driver(omap_twl4030_driver);
 363
 364 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
 365 MODULE_DESCRIPTION("ALSA SoC for TI SoC based boards with twl4030 codec");
 366 MODULE_LICENSE("GPL");
 367 MODULE_ALIAS("platform:omap-twl4030");