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