sound/soc/omap/omap-abe-twl6040.c

   1 /*
   2  * omap-abe-twl6040.c  --  SoC audio for TI OMAP based boards with ABE and
   3  *                         twl6040 codec
   4  *
   5  * Author: Misael Lopez Cruz <misael.lopez@ti.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * version 2 as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  19  * 02110-1301 USA
  20  *
  21  */
  22
  23 #include <linux/clk.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/mfd/twl6040.h>
  26 #include <linux/platform_data/omap-abe-twl6040.h>
  27 #include <linux/module.h>
  28 #include <linux/of.h>
  29
  30 #include <sound/core.h>
  31 #include <sound/pcm.h>
  32 #include <sound/soc.h>
  33 #include <sound/jack.h>
  34
  35 #include <asm/mach-types.h>
  36 #include <plat/hardware.h>
  37 #include <plat/mux.h>
  38
  39 #include "omap-dmic.h"
  40 #include "omap-mcpdm.h"
  41 #include "omap-pcm.h"
  42 #include "../codecs/twl6040.h"
  43
  44 struct abe_twl6040 {
  45         int     jack_detection; /* board can detect jack events */
  46         int     mclk_freq;      /* MCLK frequency speed for twl6040 */
  47
  48         struct platform_device *dmic_codec_dev;
  49 };
  50
  51 static int omap_abe_hw_params(struct snd_pcm_substream *substream,
  52         struct snd_pcm_hw_params *params)
  53 {
  54         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  55         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  56         struct snd_soc_codec *codec = rtd->codec;
  57         struct snd_soc_card *card = codec->card;
  58         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
  59         int clk_id, freq;
  60         int ret;
  61
  62         clk_id = twl6040_get_clk_id(rtd->codec);
  63         if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
  64                 freq = priv->mclk_freq;
  65         else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
  66                 freq = 32768;
  67         else
  68                 return -EINVAL;
  69
  70         /* set the codec mclk */
  71         ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
  72                                 SND_SOC_CLOCK_IN);
  73         if (ret) {
  74                 printk(KERN_ERR "can't set codec system clock\n");
  75                 return ret;
  76         }
  77         return ret;
  78 }
  79
  80 static struct snd_soc_ops omap_abe_ops = {
  81         .hw_params = omap_abe_hw_params,
  82 };
  83
  84 static int omap_abe_dmic_hw_params(struct snd_pcm_substream *substream,
  85         struct snd_pcm_hw_params *params)
  86 {
  87         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  88         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  89         int ret = 0;
  90
  91         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_SYSCLK_PAD_CLKS,
  92                                      19200000, SND_SOC_CLOCK_IN);
  93         if (ret < 0) {
  94                 printk(KERN_ERR "can't set DMIC cpu system clock\n");
  95                 return ret;
  96         }
  97         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_ABE_DMIC_CLK, 2400000,
  98                                      SND_SOC_CLOCK_OUT);
  99         if (ret < 0) {
 100                 printk(KERN_ERR "can't set DMIC output clock\n");
 101                 return ret;
 102         }
 103         return 0;
 104 }
 105
 106 static struct snd_soc_ops omap_abe_dmic_ops = {
 107         .hw_params = omap_abe_dmic_hw_params,
 108 };
 109
 110 /* Headset jack */
 111 static struct snd_soc_jack hs_jack;
 112
 113 /*Headset jack detection DAPM pins */
 114 static struct snd_soc_jack_pin hs_jack_pins[] = {
 115         {
 116                 .pin = "Headset Mic",
 117                 .mask = SND_JACK_MICROPHONE,
 118         },
 119         {
 120                 .pin = "Headset Stereophone",
 121                 .mask = SND_JACK_HEADPHONE,
 122         },
 123 };
 124
 125 /* SDP4430 machine DAPM */
 126 static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
 127         /* Outputs */
 128         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 129         SND_SOC_DAPM_SPK("Earphone Spk", NULL),
 130         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 131         SND_SOC_DAPM_LINE("Line Out", NULL),
 132         SND_SOC_DAPM_SPK("Vibrator", NULL),
 133
 134         /* Inputs */
 135         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 136         SND_SOC_DAPM_MIC("Main Handset Mic", NULL),
 137         SND_SOC_DAPM_MIC("Sub Handset Mic", NULL),
 138         SND_SOC_DAPM_LINE("Line In", NULL),
 139
 140         /* Digital microphones */
 141         SND_SOC_DAPM_MIC("Digital Mic", NULL),
 142 };
 143
 144 static const struct snd_soc_dapm_route audio_map[] = {
 145         /* Routings for outputs */
 146         {"Headset Stereophone", NULL, "HSOL"},
 147         {"Headset Stereophone", NULL, "HSOR"},
 148
 149         {"Earphone Spk", NULL, "EP"},
 150
 151         {"Ext Spk", NULL, "HFL"},
 152         {"Ext Spk", NULL, "HFR"},
 153
 154         {"Line Out", NULL, "AUXL"},
 155         {"Line Out", NULL, "AUXR"},
 156
 157         {"Vibrator", NULL, "VIBRAL"},
 158         {"Vibrator", NULL, "VIBRAR"},
 159
 160         /* Routings for inputs */
 161         {"HSMIC", NULL, "Headset Mic"},
 162         {"Headset Mic", NULL, "Headset Mic Bias"},
 163
 164         {"MAINMIC", NULL, "Main Handset Mic"},
 165         {"Main Handset Mic", NULL, "Main Mic Bias"},
 166
 167         {"SUBMIC", NULL, "Sub Handset Mic"},
 168         {"Sub Handset Mic", NULL, "Main Mic Bias"},
 169
 170         {"AFML", NULL, "Line In"},
 171         {"AFMR", NULL, "Line In"},
 172 };
 173
 174 static inline void twl6040_disconnect_pin(struct snd_soc_dapm_context *dapm,
 175                                           int connected, char *pin)
 176 {
 177         if (!connected)
 178                 snd_soc_dapm_disable_pin(dapm, pin);
 179 }
 180
 181 static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd)
 182 {
 183         struct snd_soc_codec *codec = rtd->codec;
 184         struct snd_soc_card *card = codec->card;
 185         struct snd_soc_dapm_context *dapm = &codec->dapm;
 186         struct omap_abe_twl6040_data *pdata = dev_get_platdata(card->dev);
 187         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
 188         int hs_trim;
 189         int ret = 0;
 190
 191         /*
 192          * Configure McPDM offset cancellation based on the HSOTRIM value from
 193          * twl6040.
 194          */
 195         hs_trim = twl6040_get_trim_value(codec, TWL6040_TRIM_HSOTRIM);
 196         omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim),
 197                                         TWL6040_HSF_TRIM_RIGHT(hs_trim));
 198
 199         /* Headset jack detection only if it is supported */
 200         if (priv->jack_detection) {
 201                 ret = snd_soc_jack_new(codec, "Headset Jack",
 202                                         SND_JACK_HEADSET, &hs_jack);
 203                 if (ret)
 204                         return ret;
 205
 206                 ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 207                                         hs_jack_pins);
 208                 twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
 209         }
 210
 211         /*
 212          * NULL pdata means we booted with DT. In this case the routing is
 213          * provided and the card is fully routed, no need to mark pins.
 214          */
 215         if (!pdata)
 216                 return ret;
 217
 218         /* Disable not connected paths if not used */
 219         twl6040_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
 220         twl6040_disconnect_pin(dapm, pdata->has_hf, "Ext Spk");
 221         twl6040_disconnect_pin(dapm, pdata->has_ep, "Earphone Spk");
 222         twl6040_disconnect_pin(dapm, pdata->has_aux, "Line Out");
 223         twl6040_disconnect_pin(dapm, pdata->has_vibra, "Vinrator");
 224         twl6040_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
 225         twl6040_disconnect_pin(dapm, pdata->has_mainmic, "Main Handset Mic");
 226         twl6040_disconnect_pin(dapm, pdata->has_submic, "Sub Handset Mic");
 227         twl6040_disconnect_pin(dapm, pdata->has_afm, "Line In");
 228
 229         return ret;
 230 }
 231
 232 static const struct snd_soc_dapm_route dmic_audio_map[] = {
 233         {"DMic", NULL, "Digital Mic"},
 234         {"Digital Mic", NULL, "Digital Mic1 Bias"},
 235 };
 236
 237 static int omap_abe_dmic_init(struct snd_soc_pcm_runtime *rtd)
 238 {
 239         struct snd_soc_codec *codec = rtd->codec;
 240         struct snd_soc_dapm_context *dapm = &codec->dapm;
 241
 242         return snd_soc_dapm_add_routes(dapm, dmic_audio_map,
 243                                 ARRAY_SIZE(dmic_audio_map));
 244 }
 245
 246 /* Digital audio interface glue - connects codec <--> CPU */
 247 static struct snd_soc_dai_link abe_twl6040_dai_links[] = {
 248         {
 249                 .name = "TWL6040",
 250                 .stream_name = "TWL6040",
 251                 .cpu_dai_name = "omap-mcpdm",
 252                 .codec_dai_name = "twl6040-legacy",
 253                 .platform_name = "omap-pcm-audio",
 254                 .codec_name = "twl6040-codec",
 255                 .init = omap_abe_twl6040_init,
 256                 .ops = &omap_abe_ops,
 257         },
 258         {
 259                 .name = "DMIC",
 260                 .stream_name = "DMIC Capture",
 261                 .cpu_dai_name = "omap-dmic",
 262                 .codec_dai_name = "dmic-hifi",
 263                 .platform_name = "omap-pcm-audio",
 264                 .codec_name = "dmic-codec",
 265                 .init = omap_abe_dmic_init,
 266                 .ops = &omap_abe_dmic_ops,
 267         },
 268 };
 269
 270 /* Audio machine driver */
 271 static struct snd_soc_card omap_abe_card = {
 272         .owner = THIS_MODULE,
 273
 274         .dapm_widgets = twl6040_dapm_widgets,
 275         .num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets),
 276         .dapm_routes = audio_map,
 277         .num_dapm_routes = ARRAY_SIZE(audio_map),
 278 };
 279
 280 static __devinit int omap_abe_probe(struct platform_device *pdev)
 281 {
 282         struct omap_abe_twl6040_data *pdata = dev_get_platdata(&pdev->dev);
 283         struct device_node *node = pdev->dev.of_node;
 284         struct snd_soc_card *card = &omap_abe_card;
 285         struct abe_twl6040 *priv;
 286         int num_links = 0;
 287         int ret = 0;
 288
 289         card->dev = &pdev->dev;
 290
 291         priv = devm_kzalloc(&pdev->dev, sizeof(struct abe_twl6040), GFP_KERNEL);
 292         if (priv == NULL)
 293                 return -ENOMEM;
 294
 295         priv->dmic_codec_dev = ERR_PTR(-EINVAL);
 296
 297         if (node) {
 298                 struct device_node *dai_node;
 299
 300                 if (snd_soc_of_parse_card_name(card, "ti,model")) {
 301                         dev_err(&pdev->dev, "Card name is not provided\n");
 302                         return -ENODEV;
 303                 }
 304
 305                 ret = snd_soc_of_parse_audio_routing(card,
 306                                                 "ti,audio-routing");
 307                 if (ret) {
 308                         dev_err(&pdev->dev,
 309                                 "Error while parsing DAPM routing\n");
 310                         return ret;
 311                 }
 312
 313                 dai_node = of_parse_phandle(node, "ti,mcpdm", 0);
 314                 if (!dai_node) {
 315                         dev_err(&pdev->dev, "McPDM node is not provided\n");
 316                         return -EINVAL;
 317                 }
 318                 abe_twl6040_dai_links[0].cpu_dai_name  = NULL;
 319                 abe_twl6040_dai_links[0].cpu_of_node = dai_node;
 320
 321                 dai_node = of_parse_phandle(node, "ti,dmic", 0);
 322                 if (dai_node) {
 323                         num_links = 2;
 324                         abe_twl6040_dai_links[1].cpu_dai_name  = NULL;
 325                         abe_twl6040_dai_links[1].cpu_of_node = dai_node;
 326
 327                         priv->dmic_codec_dev = platform_device_register_simple(
 328                                                 "dmic-codec", -1, NULL, 0);
 329                         if (IS_ERR(priv->dmic_codec_dev)) {
 330                                 dev_err(&pdev->dev,
 331                                         "Can't instantiate dmic-codec\n");
 332                                 return PTR_ERR(priv->dmic_codec_dev);
 333                         }
 334                 } else {
 335                         num_links = 1;
 336                 }
 337
 338                 of_property_read_u32(node, "ti,jack-detection",
 339                                      &priv->jack_detection);
 340                 of_property_read_u32(node, "ti,mclk-freq",
 341                                      &priv->mclk_freq);
 342                 if (!priv->mclk_freq) {
 343                         dev_err(&pdev->dev, "MCLK frequency not provided\n");
 344                         ret = -EINVAL;
 345                         goto err_unregister;
 346                 }
 347
 348                 omap_abe_card.fully_routed = 1;
 349         } else if (pdata) {
 350                 if (pdata->card_name) {
 351                         card->name = pdata->card_name;
 352                 } else {
 353                         dev_err(&pdev->dev, "Card name is not provided\n");
 354                         return -ENODEV;
 355                 }
 356
 357                 if (pdata->has_dmic)
 358                         num_links = 2;
 359                 else
 360                         num_links = 1;
 361
 362                 priv->jack_detection = pdata->jack_detection;
 363                 priv->mclk_freq = pdata->mclk_freq;
 364         } else {
 365                 dev_err(&pdev->dev, "Missing pdata\n");
 366                 return -ENODEV;
 367         }
 368
 369
 370         if (!priv->mclk_freq) {
 371                 dev_err(&pdev->dev, "MCLK frequency missing\n");
 372                 ret = -ENODEV;
 373                 goto err_unregister;
 374         }
 375
 376         card->dai_link = abe_twl6040_dai_links;
 377         card->num_links = num_links;
 378
 379         snd_soc_card_set_drvdata(card, priv);
 380
 381         ret = snd_soc_register_card(card);
 382         if (ret) {
 383                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 384                         ret);
 385                 goto err_unregister;
 386         }
 387
 388         return 0;
 389
 390 err_unregister:
 391         if (!IS_ERR(priv->dmic_codec_dev))
 392                 platform_device_unregister(priv->dmic_codec_dev);
 393
 394         return ret;
 395 }
 396
 397 static int __devexit omap_abe_remove(struct platform_device *pdev)
 398 {
 399         struct snd_soc_card *card = platform_get_drvdata(pdev);
 400         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
 401
 402         snd_soc_unregister_card(card);
 403
 404         if (!IS_ERR(priv->dmic_codec_dev))
 405                 platform_device_unregister(priv->dmic_codec_dev);
 406
 407         return 0;
 408 }
 409
 410 static const struct of_device_id omap_abe_of_match[] = {
 411         {.compatible = "ti,abe-twl6040", },
 412         { },
 413 };
 414 MODULE_DEVICE_TABLE(of, omap_abe_of_match);
 415
 416 static struct platform_driver omap_abe_driver = {
 417         .driver = {
 418                 .name = "omap-abe-twl6040",
 419                 .owner = THIS_MODULE,
 420                 .pm = &snd_soc_pm_ops,
 421                 .of_match_table = omap_abe_of_match,
 422         },
 423         .probe = omap_abe_probe,
 424         .remove = __devexit_p(omap_abe_remove),
 425 };
 426
 427 module_platform_driver(omap_abe_driver);
 428
 429 MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
 430 MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec");
 431 MODULE_LICENSE("GPL");
 432 MODULE_ALIAS("platform:omap-abe-twl6040");