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