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
  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 "omap-pcm.h"
  37 #include "../codecs/twl6040.h"
  38
  39 struct abe_twl6040 {
  40         int     jack_detection; /* board can detect jack events */
  41         int     mclk_freq;      /* MCLK frequency speed for twl6040 */
  42 };
  43
  44 static int omap_abe_hw_params(struct snd_pcm_substream *substream,
  45         struct snd_pcm_hw_params *params)
  46 {
  47         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  48         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  49         struct snd_soc_codec *codec = rtd->codec;
  50         struct snd_soc_card *card = codec->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 inline void twl6040_disconnect_pin(struct snd_soc_dapm_context *dapm,
 168                                           int connected, char *pin)
 169 {
 170         if (!connected)
 171                 snd_soc_dapm_disable_pin(dapm, pin);
 172 }
 173
 174 static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd)
 175 {
 176         struct snd_soc_codec *codec = rtd->codec;
 177         struct snd_soc_card *card = codec->card;
 178         struct snd_soc_dapm_context *dapm = &codec->dapm;
 179         struct omap_abe_twl6040_data *pdata = dev_get_platdata(card->dev);
 180         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
 181         int hs_trim;
 182         int ret = 0;
 183
 184         /* Disable not connected paths if not used */
 185         twl6040_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
 186         twl6040_disconnect_pin(dapm, pdata->has_hf, "Ext Spk");
 187         twl6040_disconnect_pin(dapm, pdata->has_ep, "Earphone Spk");
 188         twl6040_disconnect_pin(dapm, pdata->has_aux, "Line Out");
 189         twl6040_disconnect_pin(dapm, pdata->has_vibra, "Vinrator");
 190         twl6040_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
 191         twl6040_disconnect_pin(dapm, pdata->has_mainmic, "Main Handset Mic");
 192         twl6040_disconnect_pin(dapm, pdata->has_submic, "Sub Handset Mic");
 193         twl6040_disconnect_pin(dapm, pdata->has_afm, "Line In");
 194
 195         /*
 196          * Configure McPDM offset cancellation based on the HSOTRIM value from
 197          * twl6040.
 198          */
 199         hs_trim = twl6040_get_trim_value(codec, TWL6040_TRIM_HSOTRIM);
 200         omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim),
 201                                         TWL6040_HSF_TRIM_RIGHT(hs_trim));
 202
 203         /* Headset jack detection only if it is supported */
 204         if (priv->jack_detection) {
 205                 ret = snd_soc_jack_new(codec, "Headset Jack",
 206                                         SND_JACK_HEADSET, &hs_jack);
 207                 if (ret)
 208                         return ret;
 209
 210                 ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 211                                         hs_jack_pins);
 212                 twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
 213         }
 214
 215         return ret;
 216 }
 217
 218 static const struct snd_soc_dapm_route dmic_audio_map[] = {
 219         {"DMic", NULL, "Digital Mic"},
 220         {"Digital Mic", NULL, "Digital Mic1 Bias"},
 221 };
 222
 223 static int omap_abe_dmic_init(struct snd_soc_pcm_runtime *rtd)
 224 {
 225         struct snd_soc_codec *codec = rtd->codec;
 226         struct snd_soc_dapm_context *dapm = &codec->dapm;
 227
 228         return snd_soc_dapm_add_routes(dapm, dmic_audio_map,
 229                                 ARRAY_SIZE(dmic_audio_map));
 230 }
 231
 232 /* Digital audio interface glue - connects codec <--> CPU */
 233 static struct snd_soc_dai_link abe_twl6040_dai_links[] = {
 234         {
 235                 .name = "TWL6040",
 236                 .stream_name = "TWL6040",
 237                 .cpu_dai_name = "omap-mcpdm",
 238                 .codec_dai_name = "twl6040-legacy",
 239                 .platform_name = "omap-pcm-audio",
 240                 .codec_name = "twl6040-codec",
 241                 .init = omap_abe_twl6040_init,
 242                 .ops = &omap_abe_ops,
 243         },
 244         {
 245                 .name = "DMIC",
 246                 .stream_name = "DMIC Capture",
 247                 .cpu_dai_name = "omap-dmic",
 248                 .codec_dai_name = "dmic-hifi",
 249                 .platform_name = "omap-pcm-audio",
 250                 .codec_name = "dmic-codec",
 251                 .init = omap_abe_dmic_init,
 252                 .ops = &omap_abe_dmic_ops,
 253         },
 254 };
 255
 256 /* Audio machine driver */
 257 static struct snd_soc_card omap_abe_card = {
 258         .owner = THIS_MODULE,
 259
 260         .dapm_widgets = twl6040_dapm_widgets,
 261         .num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets),
 262         .dapm_routes = audio_map,
 263         .num_dapm_routes = ARRAY_SIZE(audio_map),
 264 };
 265
 266 static __devinit int omap_abe_probe(struct platform_device *pdev)
 267 {
 268         struct omap_abe_twl6040_data *pdata = dev_get_platdata(&pdev->dev);
 269         struct snd_soc_card *card = &omap_abe_card;
 270         struct abe_twl6040 *priv;
 271         int num_links = 0;
 272         int ret;
 273
 274         card->dev = &pdev->dev;
 275
 276         if (!pdata) {
 277                 dev_err(&pdev->dev, "Missing pdata\n");
 278                 return -ENODEV;
 279         }
 280
 281         priv = devm_kzalloc(&pdev->dev, sizeof(struct abe_twl6040), GFP_KERNEL);
 282         if (priv == NULL)
 283                 return -ENOMEM;
 284
 285         if (pdata->card_name) {
 286                 card->name = pdata->card_name;
 287         } else {
 288                 dev_err(&pdev->dev, "Card name is not provided\n");
 289                 return -ENODEV;
 290         }
 291
 292         priv->jack_detection = pdata->jack_detection;
 293         priv->mclk_freq = pdata->mclk_freq;
 294
 295
 296         if (!priv->mclk_freq) {
 297                 dev_err(&pdev->dev, "MCLK frequency missing\n");
 298                 return -ENODEV;
 299         }
 300
 301         if (pdata->has_dmic)
 302                 num_links = 2;
 303         else
 304                 num_links = 1;
 305
 306         card->dai_link = abe_twl6040_dai_links;
 307         card->num_links = num_links;
 308
 309         snd_soc_card_set_drvdata(card, priv);
 310
 311         ret = snd_soc_register_card(card);
 312         if (ret)
 313                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 314                         ret);
 315
 316         return ret;
 317 }
 318
 319 static int __devexit omap_abe_remove(struct platform_device *pdev)
 320 {
 321         struct snd_soc_card *card = platform_get_drvdata(pdev);
 322
 323         snd_soc_unregister_card(card);
 324
 325         return 0;
 326 }
 327
 328 static struct platform_driver omap_abe_driver = {
 329         .driver = {
 330                 .name = "omap-abe-twl6040",
 331                 .owner = THIS_MODULE,
 332                 .pm = &snd_soc_pm_ops,
 333         },
 334         .probe = omap_abe_probe,
 335         .remove = __devexit_p(omap_abe_remove),
 336 };
 337
 338 module_platform_driver(omap_abe_driver);
 339
 340 MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
 341 MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec");
 342 MODULE_LICENSE("GPL");
 343 MODULE_ALIAS("platform:omap-abe-twl6040");