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 <asm/mach-types.h>
  35 #include <plat/hardware.h>
  36 #include <plat/mux.h>
  37
  38 #include "omap-dmic.h"
  39 #include "omap-mcpdm.h"
  40 #include "omap-pcm.h"
  41 #include "../codecs/twl6040.h"
  42
  43 struct abe_twl6040 {
  44         int     jack_detection; /* board can detect jack events */
  45         int     mclk_freq;      /* MCLK frequency speed for twl6040 */
  46 };
  47
  48 static int omap_abe_hw_params(struct snd_pcm_substream *substream,
  49         struct snd_pcm_hw_params *params)
  50 {
  51         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  52         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  53         struct snd_soc_codec *codec = rtd->codec;
  54         struct snd_soc_card *card = codec->card;
  55         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
  56         int clk_id, freq;
  57         int ret;
  58
  59         clk_id = twl6040_get_clk_id(rtd->codec);
  60         if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
  61                 freq = priv->mclk_freq;
  62         else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
  63                 freq = 32768;
  64         else
  65                 return -EINVAL;
  66
  67         /* set the codec mclk */
  68         ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
  69                                 SND_SOC_CLOCK_IN);
  70         if (ret) {
  71                 printk(KERN_ERR "can't set codec system clock\n");
  72                 return ret;
  73         }
  74         return ret;
  75 }
  76
  77 static struct snd_soc_ops omap_abe_ops = {
  78         .hw_params = omap_abe_hw_params,
  79 };
  80
  81 static int omap_abe_dmic_hw_params(struct snd_pcm_substream *substream,
  82         struct snd_pcm_hw_params *params)
  83 {
  84         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  85         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  86         int ret = 0;
  87
  88         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_SYSCLK_PAD_CLKS,
  89                                      19200000, SND_SOC_CLOCK_IN);
  90         if (ret < 0) {
  91                 printk(KERN_ERR "can't set DMIC cpu system clock\n");
  92                 return ret;
  93         }
  94         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_ABE_DMIC_CLK, 2400000,
  95                                      SND_SOC_CLOCK_OUT);
  96         if (ret < 0) {
  97                 printk(KERN_ERR "can't set DMIC output clock\n");
  98                 return ret;
  99         }
 100         return 0;
 101 }
 102
 103 static struct snd_soc_ops omap_abe_dmic_ops = {
 104         .hw_params = omap_abe_dmic_hw_params,
 105 };
 106
 107 /* Headset jack */
 108 static struct snd_soc_jack hs_jack;
 109
 110 /*Headset jack detection DAPM pins */
 111 static struct snd_soc_jack_pin hs_jack_pins[] = {
 112         {
 113                 .pin = "Headset Mic",
 114                 .mask = SND_JACK_MICROPHONE,
 115         },
 116         {
 117                 .pin = "Headset Stereophone",
 118                 .mask = SND_JACK_HEADPHONE,
 119         },
 120 };
 121
 122 /* SDP4430 machine DAPM */
 123 static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
 124         /* Outputs */
 125         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 126         SND_SOC_DAPM_SPK("Earphone Spk", NULL),
 127         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 128         SND_SOC_DAPM_LINE("Line Out", NULL),
 129         SND_SOC_DAPM_SPK("Vibrator", NULL),
 130
 131         /* Inputs */
 132         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 133         SND_SOC_DAPM_MIC("Main Handset Mic", NULL),
 134         SND_SOC_DAPM_MIC("Sub Handset Mic", NULL),
 135         SND_SOC_DAPM_LINE("Line In", NULL),
 136
 137         /* Digital microphones */
 138         SND_SOC_DAPM_MIC("Digital Mic", NULL),
 139 };
 140
 141 static const struct snd_soc_dapm_route audio_map[] = {
 142         /* Routings for outputs */
 143         {"Headset Stereophone", NULL, "HSOL"},
 144         {"Headset Stereophone", NULL, "HSOR"},
 145
 146         {"Earphone Spk", NULL, "EP"},
 147
 148         {"Ext Spk", NULL, "HFL"},
 149         {"Ext Spk", NULL, "HFR"},
 150
 151         {"Line Out", NULL, "AUXL"},
 152         {"Line Out", NULL, "AUXR"},
 153
 154         {"Vibrator", NULL, "VIBRAL"},
 155         {"Vibrator", NULL, "VIBRAR"},
 156
 157         /* Routings for inputs */
 158         {"HSMIC", NULL, "Headset Mic"},
 159         {"Headset Mic", NULL, "Headset Mic Bias"},
 160
 161         {"MAINMIC", NULL, "Main Handset Mic"},
 162         {"Main Handset Mic", NULL, "Main Mic Bias"},
 163
 164         {"SUBMIC", NULL, "Sub Handset Mic"},
 165         {"Sub Handset Mic", NULL, "Main Mic Bias"},
 166
 167         {"AFML", NULL, "Line In"},
 168         {"AFMR", NULL, "Line In"},
 169 };
 170
 171 static inline void twl6040_disconnect_pin(struct snd_soc_dapm_context *dapm,
 172                                           int connected, char *pin)
 173 {
 174         if (!connected)
 175                 snd_soc_dapm_disable_pin(dapm, pin);
 176 }
 177
 178 static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd)
 179 {
 180         struct snd_soc_codec *codec = rtd->codec;
 181         struct snd_soc_card *card = codec->card;
 182         struct snd_soc_dapm_context *dapm = &codec->dapm;
 183         struct omap_abe_twl6040_data *pdata = dev_get_platdata(card->dev);
 184         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
 185         int hs_trim;
 186         int ret = 0;
 187
 188         /* Disable not connected paths if not used */
 189         twl6040_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
 190         twl6040_disconnect_pin(dapm, pdata->has_hf, "Ext Spk");
 191         twl6040_disconnect_pin(dapm, pdata->has_ep, "Earphone Spk");
 192         twl6040_disconnect_pin(dapm, pdata->has_aux, "Line Out");
 193         twl6040_disconnect_pin(dapm, pdata->has_vibra, "Vinrator");
 194         twl6040_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
 195         twl6040_disconnect_pin(dapm, pdata->has_mainmic, "Main Handset Mic");
 196         twl6040_disconnect_pin(dapm, pdata->has_submic, "Sub Handset Mic");
 197         twl6040_disconnect_pin(dapm, pdata->has_afm, "Line In");
 198
 199         /*
 200          * Configure McPDM offset cancellation based on the HSOTRIM value from
 201          * twl6040.
 202          */
 203         hs_trim = twl6040_get_trim_value(codec, TWL6040_TRIM_HSOTRIM);
 204         omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim),
 205                                         TWL6040_HSF_TRIM_RIGHT(hs_trim));
 206
 207         /* Headset jack detection only if it is supported */
 208         if (priv->jack_detection) {
 209                 ret = snd_soc_jack_new(codec, "Headset Jack",
 210                                         SND_JACK_HEADSET, &hs_jack);
 211                 if (ret)
 212                         return ret;
 213
 214                 ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 215                                         hs_jack_pins);
 216                 twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
 217         }
 218
 219         return ret;
 220 }
 221
 222 static const struct snd_soc_dapm_route dmic_audio_map[] = {
 223         {"DMic", NULL, "Digital Mic"},
 224         {"Digital Mic", NULL, "Digital Mic1 Bias"},
 225 };
 226
 227 static int omap_abe_dmic_init(struct snd_soc_pcm_runtime *rtd)
 228 {
 229         struct snd_soc_codec *codec = rtd->codec;
 230         struct snd_soc_dapm_context *dapm = &codec->dapm;
 231
 232         return snd_soc_dapm_add_routes(dapm, dmic_audio_map,
 233                                 ARRAY_SIZE(dmic_audio_map));
 234 }
 235
 236 /* Digital audio interface glue - connects codec <--> CPU */
 237 static struct snd_soc_dai_link abe_twl6040_dai_links[] = {
 238         {
 239                 .name = "TWL6040",
 240                 .stream_name = "TWL6040",
 241                 .cpu_dai_name = "omap-mcpdm",
 242                 .codec_dai_name = "twl6040-legacy",
 243                 .platform_name = "omap-pcm-audio",
 244                 .codec_name = "twl6040-codec",
 245                 .init = omap_abe_twl6040_init,
 246                 .ops = &omap_abe_ops,
 247         },
 248         {
 249                 .name = "DMIC",
 250                 .stream_name = "DMIC Capture",
 251                 .cpu_dai_name = "omap-dmic",
 252                 .codec_dai_name = "dmic-hifi",
 253                 .platform_name = "omap-pcm-audio",
 254                 .codec_name = "dmic-codec",
 255                 .init = omap_abe_dmic_init,
 256                 .ops = &omap_abe_dmic_ops,
 257         },
 258 };
 259
 260 /* Audio machine driver */
 261 static struct snd_soc_card omap_abe_card = {
 262         .owner = THIS_MODULE,
 263
 264         .dapm_widgets = twl6040_dapm_widgets,
 265         .num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets),
 266         .dapm_routes = audio_map,
 267         .num_dapm_routes = ARRAY_SIZE(audio_map),
 268 };
 269
 270 static __devinit int omap_abe_probe(struct platform_device *pdev)
 271 {
 272         struct omap_abe_twl6040_data *pdata = dev_get_platdata(&pdev->dev);
 273         struct snd_soc_card *card = &omap_abe_card;
 274         struct abe_twl6040 *priv;
 275         int num_links = 0;
 276         int ret;
 277
 278         card->dev = &pdev->dev;
 279
 280         if (!pdata) {
 281                 dev_err(&pdev->dev, "Missing pdata\n");
 282                 return -ENODEV;
 283         }
 284
 285         priv = devm_kzalloc(&pdev->dev, sizeof(struct abe_twl6040), GFP_KERNEL);
 286         if (priv == NULL)
 287                 return -ENOMEM;
 288
 289         if (pdata->card_name) {
 290                 card->name = pdata->card_name;
 291         } else {
 292                 dev_err(&pdev->dev, "Card name is not provided\n");
 293                 return -ENODEV;
 294         }
 295
 296         priv->jack_detection = pdata->jack_detection;
 297         priv->mclk_freq = pdata->mclk_freq;
 298
 299
 300         if (!priv->mclk_freq) {
 301                 dev_err(&pdev->dev, "MCLK frequency missing\n");
 302                 return -ENODEV;
 303         }
 304
 305         if (pdata->has_dmic)
 306                 num_links = 2;
 307         else
 308                 num_links = 1;
 309
 310         card->dai_link = abe_twl6040_dai_links;
 311         card->num_links = num_links;
 312
 313         snd_soc_card_set_drvdata(card, priv);
 314
 315         ret = snd_soc_register_card(card);
 316         if (ret)
 317                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 318                         ret);
 319
 320         return ret;
 321 }
 322
 323 static int __devexit omap_abe_remove(struct platform_device *pdev)
 324 {
 325         struct snd_soc_card *card = platform_get_drvdata(pdev);
 326
 327         snd_soc_unregister_card(card);
 328
 329         return 0;
 330 }
 331
 332 static struct platform_driver omap_abe_driver = {
 333         .driver = {
 334                 .name = "omap-abe-twl6040",
 335                 .owner = THIS_MODULE,
 336                 .pm = &snd_soc_pm_ops,
 337         },
 338         .probe = omap_abe_probe,
 339         .remove = __devexit_p(omap_abe_remove),
 340 };
 341
 342 module_platform_driver(omap_abe_driver);
 343
 344 MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
 345 MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec");
 346 MODULE_LICENSE("GPL");
 347 MODULE_ALIAS("platform:omap-abe-twl6040");