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/module.h>
  27 #include <linux/of.h>
  28
  29 #include <sound/core.h>
  30 #include <sound/pcm.h>
  31 #include <sound/soc.h>
  32 #include <sound/jack.h>
  33
  34 #include "omap-dmic.h"
  35 #include "omap-mcpdm.h"
  36 #include "../codecs/twl6040.h"
  37
  38 struct abe_twl6040 {
  39         int     jack_detection; /* board can detect jack events */
  40         int     mclk_freq;      /* MCLK frequency speed for twl6040 */
  41
  42         struct platform_device *dmic_codec_dev;
  43 };
  44
  45 static int omap_abe_hw_params(struct snd_pcm_substream *substream,
  46         struct snd_pcm_hw_params *params)
  47 {
  48         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  49         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  50         struct snd_soc_codec *codec = rtd->codec;
  51         struct snd_soc_card *card = codec->card;
  52         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
  53         int clk_id, freq;
  54         int ret;
  55
  56         clk_id = twl6040_get_clk_id(rtd->codec);
  57         if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
  58                 freq = priv->mclk_freq;
  59         else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
  60                 freq = 32768;
  61         else
  62                 return -EINVAL;
  63
  64         /* set the codec mclk */
  65         ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
  66                                 SND_SOC_CLOCK_IN);
  67         if (ret) {
  68                 printk(KERN_ERR "can't set codec system clock\n");
  69                 return ret;
  70         }
  71         return ret;
  72 }
  73
  74 static struct snd_soc_ops omap_abe_ops = {
  75         .hw_params = omap_abe_hw_params,
  76 };
  77
  78 static int omap_abe_dmic_hw_params(struct snd_pcm_substream *substream,
  79         struct snd_pcm_hw_params *params)
  80 {
  81         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  82         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  83         int ret = 0;
  84
  85         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_SYSCLK_PAD_CLKS,
  86                                      19200000, SND_SOC_CLOCK_IN);
  87         if (ret < 0) {
  88                 printk(KERN_ERR "can't set DMIC cpu system clock\n");
  89                 return ret;
  90         }
  91         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_ABE_DMIC_CLK, 2400000,
  92                                      SND_SOC_CLOCK_OUT);
  93         if (ret < 0) {
  94                 printk(KERN_ERR "can't set DMIC output clock\n");
  95                 return ret;
  96         }
  97         return 0;
  98 }
  99
 100 static struct snd_soc_ops omap_abe_dmic_ops = {
 101         .hw_params = omap_abe_dmic_hw_params,
 102 };
 103
 104 /* Headset jack */
 105 static struct snd_soc_jack hs_jack;
 106
 107 /*Headset jack detection DAPM pins */
 108 static struct snd_soc_jack_pin hs_jack_pins[] = {
 109         {
 110                 .pin = "Headset Mic",
 111                 .mask = SND_JACK_MICROPHONE,
 112         },
 113         {
 114                 .pin = "Headset Stereophone",
 115                 .mask = SND_JACK_HEADPHONE,
 116         },
 117 };
 118
 119 /* SDP4430 machine DAPM */
 120 static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
 121         /* Outputs */
 122         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 123         SND_SOC_DAPM_SPK("Earphone Spk", NULL),
 124         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 125         SND_SOC_DAPM_LINE("Line Out", NULL),
 126         SND_SOC_DAPM_SPK("Vibrator", NULL),
 127
 128         /* Inputs */
 129         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 130         SND_SOC_DAPM_MIC("Main Handset Mic", NULL),
 131         SND_SOC_DAPM_MIC("Sub Handset Mic", NULL),
 132         SND_SOC_DAPM_LINE("Line In", NULL),
 133
 134         /* Digital microphones */
 135         SND_SOC_DAPM_MIC("Digital Mic", NULL),
 136 };
 137
 138 static const struct snd_soc_dapm_route audio_map[] = {
 139         /* Routings for outputs */
 140         {"Headset Stereophone", NULL, "HSOL"},
 141         {"Headset Stereophone", NULL, "HSOR"},
 142
 143         {"Earphone Spk", NULL, "EP"},
 144
 145         {"Ext Spk", NULL, "HFL"},
 146         {"Ext Spk", NULL, "HFR"},
 147
 148         {"Line Out", NULL, "AUXL"},
 149         {"Line Out", NULL, "AUXR"},
 150
 151         {"Vibrator", NULL, "VIBRAL"},
 152         {"Vibrator", NULL, "VIBRAR"},
 153
 154         /* Routings for inputs */
 155         {"HSMIC", NULL, "Headset Mic"},
 156         {"Headset Mic", NULL, "Headset Mic Bias"},
 157
 158         {"MAINMIC", NULL, "Main Handset Mic"},
 159         {"Main Handset Mic", NULL, "Main Mic Bias"},
 160
 161         {"SUBMIC", NULL, "Sub Handset Mic"},
 162         {"Sub Handset Mic", NULL, "Main Mic Bias"},
 163
 164         {"AFML", NULL, "Line In"},
 165         {"AFMR", NULL, "Line In"},
 166 };
 167
 168 static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd)
 169 {
 170         struct snd_soc_codec *codec = rtd->codec;
 171         struct snd_soc_card *card = codec->card;
 172         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
 173         int hs_trim;
 174         int ret = 0;
 175
 176         /*
 177          * Configure McPDM offset cancellation based on the HSOTRIM value from
 178          * twl6040.
 179          */
 180         hs_trim = twl6040_get_trim_value(codec, TWL6040_TRIM_HSOTRIM);
 181         omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim),
 182                                         TWL6040_HSF_TRIM_RIGHT(hs_trim));
 183
 184         /* Headset jack detection only if it is supported */
 185         if (priv->jack_detection) {
 186                 ret = snd_soc_jack_new(codec, "Headset Jack",
 187                                         SND_JACK_HEADSET, &hs_jack);
 188                 if (ret)
 189                         return ret;
 190
 191                 ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 192                                         hs_jack_pins);
 193                 twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
 194         }
 195
 196         return ret;
 197 }
 198
 199 static const struct snd_soc_dapm_route dmic_audio_map[] = {
 200         {"DMic", NULL, "Digital Mic"},
 201         {"Digital Mic", NULL, "Digital Mic1 Bias"},
 202 };
 203
 204 static int omap_abe_dmic_init(struct snd_soc_pcm_runtime *rtd)
 205 {
 206         struct snd_soc_codec *codec = rtd->codec;
 207         struct snd_soc_dapm_context *dapm = &codec->dapm;
 208
 209         return snd_soc_dapm_add_routes(dapm, dmic_audio_map,
 210                                 ARRAY_SIZE(dmic_audio_map));
 211 }
 212
 213 /* Digital audio interface glue - connects codec <--> CPU */
 214 static struct snd_soc_dai_link abe_twl6040_dai_links[] = {
 215         {
 216                 .name = "TWL6040",
 217                 .stream_name = "TWL6040",
 218                 .cpu_dai_name = "omap-mcpdm",
 219                 .codec_dai_name = "twl6040-legacy",
 220                 .platform_name = "omap-pcm-audio",
 221                 .codec_name = "twl6040-codec",
 222                 .init = omap_abe_twl6040_init,
 223                 .ops = &omap_abe_ops,
 224         },
 225         {
 226                 .name = "DMIC",
 227                 .stream_name = "DMIC Capture",
 228                 .cpu_dai_name = "omap-dmic",
 229                 .codec_dai_name = "dmic-hifi",
 230                 .platform_name = "omap-pcm-audio",
 231                 .codec_name = "dmic-codec",
 232                 .init = omap_abe_dmic_init,
 233                 .ops = &omap_abe_dmic_ops,
 234         },
 235 };
 236
 237 /* Audio machine driver */
 238 static struct snd_soc_card omap_abe_card = {
 239         .owner = THIS_MODULE,
 240
 241         .dapm_widgets = twl6040_dapm_widgets,
 242         .num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets),
 243         .dapm_routes = audio_map,
 244         .num_dapm_routes = ARRAY_SIZE(audio_map),
 245 };
 246
 247 static int omap_abe_probe(struct platform_device *pdev)
 248 {
 249         struct device_node *node = pdev->dev.of_node;
 250         struct snd_soc_card *card = &omap_abe_card;
 251         struct device_node *dai_node;
 252         struct abe_twl6040 *priv;
 253         int num_links = 0;
 254         int ret = 0;
 255
 256         if (!node) {
 257                 dev_err(&pdev->dev, "of node is missing.\n");
 258                 return -ENODEV;
 259         }
 260
 261         card->dev = &pdev->dev;
 262
 263         priv = devm_kzalloc(&pdev->dev, sizeof(struct abe_twl6040), GFP_KERNEL);
 264         if (priv == NULL)
 265                 return -ENOMEM;
 266
 267         priv->dmic_codec_dev = ERR_PTR(-EINVAL);
 268
 269         if (snd_soc_of_parse_card_name(card, "ti,model")) {
 270                 dev_err(&pdev->dev, "Card name is not provided\n");
 271                 return -ENODEV;
 272         }
 273
 274         ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
 275         if (ret) {
 276                 dev_err(&pdev->dev, "Error while parsing DAPM routing\n");
 277                 return ret;
 278         }
 279
 280         dai_node = of_parse_phandle(node, "ti,mcpdm", 0);
 281         if (!dai_node) {
 282                 dev_err(&pdev->dev, "McPDM node is not provided\n");
 283                 return -EINVAL;
 284         }
 285         abe_twl6040_dai_links[0].cpu_dai_name  = NULL;
 286         abe_twl6040_dai_links[0].cpu_of_node = dai_node;
 287
 288         dai_node = of_parse_phandle(node, "ti,dmic", 0);
 289         if (dai_node) {
 290                 num_links = 2;
 291                 abe_twl6040_dai_links[1].cpu_dai_name  = NULL;
 292                 abe_twl6040_dai_links[1].cpu_of_node = dai_node;
 293
 294                 priv->dmic_codec_dev = platform_device_register_simple(
 295                                                 "dmic-codec", -1, NULL, 0);
 296                 if (IS_ERR(priv->dmic_codec_dev)) {
 297                         dev_err(&pdev->dev, "Can't instantiate dmic-codec\n");
 298                         return PTR_ERR(priv->dmic_codec_dev);
 299                 }
 300         } else {
 301                 num_links = 1;
 302         }
 303
 304         priv->jack_detection = of_property_read_bool(node, "ti,jack-detection");
 305         of_property_read_u32(node, "ti,mclk-freq", &priv->mclk_freq);
 306         if (!priv->mclk_freq) {
 307                 dev_err(&pdev->dev, "MCLK frequency not provided\n");
 308                 ret = -EINVAL;
 309                 goto err_unregister;
 310         }
 311
 312         card->fully_routed = 1;
 313
 314         if (!priv->mclk_freq) {
 315                 dev_err(&pdev->dev, "MCLK frequency missing\n");
 316                 ret = -ENODEV;
 317                 goto err_unregister;
 318         }
 319
 320         card->dai_link = abe_twl6040_dai_links;
 321         card->num_links = num_links;
 322
 323         snd_soc_card_set_drvdata(card, priv);
 324
 325         ret = snd_soc_register_card(card);
 326         if (ret) {
 327                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 328                         ret);
 329                 goto err_unregister;
 330         }
 331
 332         return 0;
 333
 334 err_unregister:
 335         if (!IS_ERR(priv->dmic_codec_dev))
 336                 platform_device_unregister(priv->dmic_codec_dev);
 337
 338         return ret;
 339 }
 340
 341 static int omap_abe_remove(struct platform_device *pdev)
 342 {
 343         struct snd_soc_card *card = platform_get_drvdata(pdev);
 344         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
 345
 346         snd_soc_unregister_card(card);
 347
 348         if (!IS_ERR(priv->dmic_codec_dev))
 349                 platform_device_unregister(priv->dmic_codec_dev);
 350
 351         return 0;
 352 }
 353
 354 static const struct of_device_id omap_abe_of_match[] = {
 355         {.compatible = "ti,abe-twl6040", },
 356         { },
 357 };
 358 MODULE_DEVICE_TABLE(of, omap_abe_of_match);
 359
 360 static struct platform_driver omap_abe_driver = {
 361         .driver = {
 362                 .name = "omap-abe-twl6040",
 363                 .owner = THIS_MODULE,
 364                 .pm = &snd_soc_pm_ops,
 365                 .of_match_table = omap_abe_of_match,
 366         },
 367         .probe = omap_abe_probe,
 368         .remove = omap_abe_remove,
 369 };
 370
 371 module_platform_driver(omap_abe_driver);
 372
 373 MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
 374 MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec");
 375 MODULE_LICENSE("GPL");
 376 MODULE_ALIAS("platform:omap-abe-twl6040");