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