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_card *card = rtd->card;
 163         struct snd_soc_dapm_context *dapm = &card->dapm;
 164         struct omap_tw4030_pdata *pdata = dev_get_platdata(card->dev);
 165         struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
 166         int ret = 0;
 167
 168         /* Headset jack detection only if it is supported */
 169         if (priv->jack_detect > 0) {
 170                 hs_jack_gpios[0].gpio = priv->jack_detect;
 171
 172                 ret = snd_soc_card_jack_new(rtd->card, "Headset Jack",
 173                                             SND_JACK_HEADSET, &priv->hs_jack,
 174                                             hs_jack_pins,
 175                                             ARRAY_SIZE(hs_jack_pins));
 176                 if (ret)
 177                         return ret;
 178
 179                 ret = snd_soc_jack_add_gpios(&priv->hs_jack,
 180                                              ARRAY_SIZE(hs_jack_gpios),
 181                                              hs_jack_gpios);
 182                 if (ret)
 183                         return ret;
 184         }
 185
 186         /*
 187          * NULL pdata means we booted with DT. In this case the routing is
 188          * provided and the card is fully routed, no need to mark pins.
 189          */
 190         if (!pdata || !pdata->custom_routing)
 191                 return ret;
 192
 193         /* Disable not connected paths if not used */
 194         twl4030_disconnect_pin(dapm, pdata->has_ear, "Earpiece Spk");
 195         twl4030_disconnect_pin(dapm, pdata->has_hf, "Handsfree Spk");
 196         twl4030_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
 197         twl4030_disconnect_pin(dapm, pdata->has_predriv, "Ext Spk");
 198         twl4030_disconnect_pin(dapm, pdata->has_carkit, "Carkit Spk");
 199
 200         twl4030_disconnect_pin(dapm, pdata->has_mainmic, "Main Mic");
 201         twl4030_disconnect_pin(dapm, pdata->has_submic, "Sub Mic");
 202         twl4030_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
 203         twl4030_disconnect_pin(dapm, pdata->has_carkitmic, "Carkit Mic");
 204         twl4030_disconnect_pin(dapm, pdata->has_digimic0, "Digital0 Mic");
 205         twl4030_disconnect_pin(dapm, pdata->has_digimic1, "Digital1 Mic");
 206         twl4030_disconnect_pin(dapm, pdata->has_linein, "Line In");
 207
 208         return ret;
 209 }
 210
 211 static int omap_twl4030_card_remove(struct snd_soc_card *card)
 212 {
 213         struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
 214
 215         if (priv->jack_detect > 0)
 216                 snd_soc_jack_free_gpios(&priv->hs_jack,
 217                                         ARRAY_SIZE(hs_jack_gpios),
 218                                         hs_jack_gpios);
 219
 220         return 0;
 221 }
 222
 223 /* Digital audio interface glue - connects codec <--> CPU */
 224 static struct snd_soc_dai_link omap_twl4030_dai_links[] = {
 225         {
 226                 .name = "TWL4030 HiFi",
 227                 .stream_name = "TWL4030 HiFi",
 228                 .cpu_dai_name = "omap-mcbsp.2",
 229                 .codec_dai_name = "twl4030-hifi",
 230                 .platform_name = "omap-mcbsp.2",
 231                 .codec_name = "twl4030-codec",
 232                 .init = omap_twl4030_init,
 233                 .ops = &omap_twl4030_ops,
 234         },
 235         {
 236                 .name = "TWL4030 Voice",
 237                 .stream_name = "TWL4030 Voice",
 238                 .cpu_dai_name = "omap-mcbsp.3",
 239                 .codec_dai_name = "twl4030-voice",
 240                 .platform_name = "omap-mcbsp.3",
 241                 .codec_name = "twl4030-codec",
 242                 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
 243                            SND_SOC_DAIFMT_CBM_CFM,
 244         },
 245 };
 246
 247 /* Audio machine driver */
 248 static struct snd_soc_card omap_twl4030_card = {
 249         .owner = THIS_MODULE,
 250         .remove = omap_twl4030_card_remove,
 251         .dai_link = omap_twl4030_dai_links,
 252         .num_links = ARRAY_SIZE(omap_twl4030_dai_links),
 253
 254         .dapm_widgets = dapm_widgets,
 255         .num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
 256         .dapm_routes = audio_map,
 257         .num_dapm_routes = ARRAY_SIZE(audio_map),
 258 };
 259
 260 static int omap_twl4030_probe(struct platform_device *pdev)
 261 {
 262         struct omap_tw4030_pdata *pdata = dev_get_platdata(&pdev->dev);
 263         struct device_node *node = pdev->dev.of_node;
 264         struct snd_soc_card *card = &omap_twl4030_card;
 265         struct omap_twl4030 *priv;
 266         int ret = 0;
 267
 268         card->dev = &pdev->dev;
 269
 270         priv = devm_kzalloc(&pdev->dev, sizeof(struct omap_twl4030), GFP_KERNEL);
 271         if (priv == NULL)
 272                 return -ENOMEM;
 273
 274         if (node) {
 275                 struct device_node *dai_node;
 276                 struct property *prop;
 277
 278                 if (snd_soc_of_parse_card_name(card, "ti,model")) {
 279                         dev_err(&pdev->dev, "Card name is not provided\n");
 280                         return -ENODEV;
 281                 }
 282
 283                 dai_node = of_parse_phandle(node, "ti,mcbsp", 0);
 284                 if (!dai_node) {
 285                         dev_err(&pdev->dev, "McBSP node is not provided\n");
 286                         return -EINVAL;
 287                 }
 288                 omap_twl4030_dai_links[0].cpu_dai_name  = NULL;
 289                 omap_twl4030_dai_links[0].cpu_of_node = dai_node;
 290
 291                 omap_twl4030_dai_links[0].platform_name  = NULL;
 292                 omap_twl4030_dai_links[0].platform_of_node = dai_node;
 293
 294                 dai_node = of_parse_phandle(node, "ti,mcbsp-voice", 0);
 295                 if (!dai_node) {
 296                         card->num_links = 1;
 297                 } else {
 298                         omap_twl4030_dai_links[1].cpu_dai_name  = NULL;
 299                         omap_twl4030_dai_links[1].cpu_of_node = dai_node;
 300
 301                         omap_twl4030_dai_links[1].platform_name  = NULL;
 302                         omap_twl4030_dai_links[1].platform_of_node = dai_node;
 303                 }
 304
 305                 priv->jack_detect = of_get_named_gpio(node,
 306                                                       "ti,jack-det-gpio", 0);
 307
 308                 /* Optional: audio routing can be provided */
 309                 prop = of_find_property(node, "ti,audio-routing", NULL);
 310                 if (prop) {
 311                         ret = snd_soc_of_parse_audio_routing(card,
 312                                                             "ti,audio-routing");
 313                         if (ret)
 314                                 return ret;
 315
 316                         card->fully_routed = 1;
 317                 }
 318         } else if (pdata) {
 319                 if (pdata->card_name) {
 320                         card->name = pdata->card_name;
 321                 } else {
 322                         dev_err(&pdev->dev, "Card name is not provided\n");
 323                         return -ENODEV;
 324                 }
 325
 326                 if (!pdata->voice_connected)
 327                         card->num_links = 1;
 328
 329                 priv->jack_detect = pdata->jack_detect;
 330         } else {
 331                 dev_err(&pdev->dev, "Missing pdata\n");
 332                 return -ENODEV;
 333         }
 334
 335         snd_soc_card_set_drvdata(card, priv);
 336         ret = devm_snd_soc_register_card(&pdev->dev, card);
 337         if (ret) {
 338                 dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n",
 339                         ret);
 340                 return ret;
 341         }
 342
 343         return 0;
 344 }
 345
 346 static const struct of_device_id omap_twl4030_of_match[] = {
 347         {.compatible = "ti,omap-twl4030", },
 348         { },
 349 };
 350 MODULE_DEVICE_TABLE(of, omap_twl4030_of_match);
 351
 352 static struct platform_driver omap_twl4030_driver = {
 353         .driver = {
 354                 .name = "omap-twl4030",
 355                 .pm = &snd_soc_pm_ops,
 356                 .of_match_table = omap_twl4030_of_match,
 357         },
 358         .probe = omap_twl4030_probe,
 359 };
 360
 361 module_platform_driver(omap_twl4030_driver);
 362
 363 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
 364 MODULE_DESCRIPTION("ALSA SoC for TI SoC based boards with twl4030 codec");
 365 MODULE_LICENSE("GPL");
 366 MODULE_ALIAS("platform:omap-twl4030");