sound/soc/mid-x86/mfld_machine.c

   1 /*
   2  *  mfld_machine.c - ASoc Machine driver for Intel Medfield MID platform
   3  *
   4  *  Copyright (C) 2010 Intel Corp
   5  *  Author: Vinod Koul <vinod.koul@intel.com>
   6  *  Author: Harsha Priya <priya.harsha@intel.com>
   7  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; version 2 of the License.
  12  *
  13  *  This program is distributed in the hope that it will be useful, but
  14  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  *  General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License along
  19  *  with this program; if not, write to the Free Software Foundation, Inc.,
  20  *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  21  *
  22  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  23  */
  24
  25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  26
  27 #include <linux/init.h>
  28 #include <linux/device.h>
  29 #include <linux/slab.h>
  30 #include <linux/io.h>
  31 #include <sound/pcm.h>
  32 #include <sound/pcm_params.h>
  33 #include <sound/soc.h>
  34 #include <sound/jack.h>
  35 #include "../codecs/sn95031.h"
  36
  37 #define MID_MONO 1
  38 #define MID_STEREO 2
  39 #define MID_MAX_CAP 5
  40 #define MFLD_JACK_INSERT 0x04
  41
  42 enum soc_mic_bias_zones {
  43         MFLD_MV_START = 0,
  44         /* mic bias volutage range for Headphones*/
  45         MFLD_MV_HP = 400,
  46         /* mic bias volutage range for American Headset*/
  47         MFLD_MV_AM_HS = 650,
  48         /* mic bias volutage range for Headset*/
  49         MFLD_MV_HS = 2000,
  50         MFLD_MV_UNDEFINED,
  51 };
  52
  53 static unsigned int     hs_switch;
  54 static unsigned int     lo_dac;
  55
  56 struct mfld_mc_private {
  57         struct platform_device *socdev;
  58         void __iomem *int_base;
  59         struct snd_soc_codec *codec;
  60         u8 interrupt_status;
  61 };
  62
  63 struct snd_soc_jack mfld_jack;
  64
  65 /*Headset jack detection DAPM pins */
  66 static struct snd_soc_jack_pin mfld_jack_pins[] = {
  67         {
  68                 .pin = "Headphones",
  69                 .mask = SND_JACK_HEADPHONE,
  70         },
  71         {
  72                 .pin = "AMIC1",
  73                 .mask = SND_JACK_MICROPHONE,
  74         },
  75 };
  76
  77 /* jack detection voltage zones */
  78 static struct snd_soc_jack_zone mfld_zones[] = {
  79         {MFLD_MV_START, MFLD_MV_AM_HS, SND_JACK_HEADPHONE},
  80         {MFLD_MV_AM_HS, MFLD_MV_HS, SND_JACK_HEADSET},
  81 };
  82
  83 /* sound card controls */
  84 static const char *headset_switch_text[] = {"Earpiece", "Headset"};
  85
  86 static const char *lo_text[] = {"Vibra", "Headset", "IHF", "None"};
  87
  88 static const struct soc_enum headset_enum =
  89         SOC_ENUM_SINGLE_EXT(2, headset_switch_text);
  90
  91 static const struct soc_enum lo_enum =
  92         SOC_ENUM_SINGLE_EXT(4, lo_text);
  93
  94 static int headset_get_switch(struct snd_kcontrol *kcontrol,
  95         struct snd_ctl_elem_value *ucontrol)
  96 {
  97         ucontrol->value.integer.value[0] = hs_switch;
  98         return 0;
  99 }
 100
 101 static int headset_set_switch(struct snd_kcontrol *kcontrol,
 102         struct snd_ctl_elem_value *ucontrol)
 103 {
 104         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 105
 106         if (ucontrol->value.integer.value[0] == hs_switch)
 107                 return 0;
 108
 109         if (ucontrol->value.integer.value[0]) {
 110                 pr_debug("hs_set HS path\n");
 111                 snd_soc_dapm_enable_pin(&codec->dapm, "Headphones");
 112                 snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");
 113         } else {
 114                 pr_debug("hs_set EP path\n");
 115                 snd_soc_dapm_disable_pin(&codec->dapm, "Headphones");
 116                 snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT");
 117         }
 118         snd_soc_dapm_sync(&codec->dapm);
 119         hs_switch = ucontrol->value.integer.value[0];
 120
 121         return 0;
 122 }
 123
 124 static void lo_enable_out_pins(struct snd_soc_codec *codec)
 125 {
 126         snd_soc_dapm_enable_pin(&codec->dapm, "IHFOUTL");
 127         snd_soc_dapm_enable_pin(&codec->dapm, "IHFOUTR");
 128         snd_soc_dapm_enable_pin(&codec->dapm, "LINEOUTL");
 129         snd_soc_dapm_enable_pin(&codec->dapm, "LINEOUTR");
 130         snd_soc_dapm_enable_pin(&codec->dapm, "VIB1OUT");
 131         snd_soc_dapm_enable_pin(&codec->dapm, "VIB2OUT");
 132         if (hs_switch) {
 133                 snd_soc_dapm_enable_pin(&codec->dapm, "Headphones");
 134                 snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");
 135         } else {
 136                 snd_soc_dapm_disable_pin(&codec->dapm, "Headphones");
 137                 snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT");
 138         }
 139 }
 140
 141 static int lo_get_switch(struct snd_kcontrol *kcontrol,
 142         struct snd_ctl_elem_value *ucontrol)
 143 {
 144         ucontrol->value.integer.value[0] = lo_dac;
 145         return 0;
 146 }
 147
 148 static int lo_set_switch(struct snd_kcontrol *kcontrol,
 149         struct snd_ctl_elem_value *ucontrol)
 150 {
 151         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 152
 153         if (ucontrol->value.integer.value[0] == lo_dac)
 154                 return 0;
 155
 156         /* we dont want to work with last state of lineout so just enable all
 157          * pins and then disable pins not required
 158          */
 159         lo_enable_out_pins(codec);
 160         switch (ucontrol->value.integer.value[0]) {
 161         case 0:
 162                 pr_debug("set vibra path\n");
 163                 snd_soc_dapm_disable_pin(&codec->dapm, "VIB1OUT");
 164                 snd_soc_dapm_disable_pin(&codec->dapm, "VIB2OUT");
 165                 snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0);
 166                 break;
 167
 168         case 1:
 169                 pr_debug("set hs  path\n");
 170                 snd_soc_dapm_disable_pin(&codec->dapm, "Headphones");
 171                 snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");
 172                 snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x22);
 173                 break;
 174
 175         case 2:
 176                 pr_debug("set spkr path\n");
 177                 snd_soc_dapm_disable_pin(&codec->dapm, "IHFOUTL");
 178                 snd_soc_dapm_disable_pin(&codec->dapm, "IHFOUTR");
 179                 snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x44);
 180                 break;
 181
 182         case 3:
 183                 pr_debug("set null path\n");
 184                 snd_soc_dapm_disable_pin(&codec->dapm, "LINEOUTL");
 185                 snd_soc_dapm_disable_pin(&codec->dapm, "LINEOUTR");
 186                 snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x66);
 187                 break;
 188         }
 189         snd_soc_dapm_sync(&codec->dapm);
 190         lo_dac = ucontrol->value.integer.value[0];
 191         return 0;
 192 }
 193
 194 static const struct snd_kcontrol_new mfld_snd_controls[] = {
 195         SOC_ENUM_EXT("Playback Switch", headset_enum,
 196                         headset_get_switch, headset_set_switch),
 197         SOC_ENUM_EXT("Lineout Mux", lo_enum,
 198                         lo_get_switch, lo_set_switch),
 199 };
 200
 201 static const struct snd_soc_dapm_widget mfld_widgets[] = {
 202         SND_SOC_DAPM_HP("Headphones", NULL),
 203         SND_SOC_DAPM_MIC("Mic", NULL),
 204 };
 205
 206 static const struct snd_soc_dapm_route mfld_map[] = {
 207         {"Headphones", NULL, "HPOUTR"},
 208         {"Headphones", NULL, "HPOUTL"},
 209         {"Mic", NULL, "AMIC1"},
 210 };
 211
 212 static void mfld_jack_check(unsigned int intr_status)
 213 {
 214         struct mfld_jack_data jack_data;
 215
 216         jack_data.mfld_jack = &mfld_jack;
 217         jack_data.intr_id = intr_status;
 218
 219         sn95031_jack_detection(&jack_data);
 220         /* TODO: add american headset detection post gpiolib support */
 221 }
 222
 223 static int mfld_init(struct snd_soc_pcm_runtime *runtime)
 224 {
 225         struct snd_soc_codec *codec = runtime->codec;
 226         struct snd_soc_dapm_context *dapm = &codec->dapm;
 227         int ret_val;
 228
 229         /* Add jack sense widgets */
 230         snd_soc_dapm_new_controls(dapm, mfld_widgets, ARRAY_SIZE(mfld_widgets));
 231
 232         /* Set up the map */
 233         snd_soc_dapm_add_routes(dapm, mfld_map, ARRAY_SIZE(mfld_map));
 234
 235         /* always connected */
 236         snd_soc_dapm_enable_pin(dapm, "Headphones");
 237         snd_soc_dapm_enable_pin(dapm, "Mic");
 238         snd_soc_dapm_sync(dapm);
 239
 240         ret_val = snd_soc_add_controls(codec, mfld_snd_controls,
 241                                 ARRAY_SIZE(mfld_snd_controls));
 242         if (ret_val) {
 243                 pr_err("soc_add_controls failed %d", ret_val);
 244                 return ret_val;
 245         }
 246         /* default is earpiece pin, userspace sets it explcitly */
 247         snd_soc_dapm_disable_pin(dapm, "Headphones");
 248         /* default is lineout NC, userspace sets it explcitly */
 249         snd_soc_dapm_disable_pin(dapm, "LINEOUTL");
 250         snd_soc_dapm_disable_pin(dapm, "LINEOUTR");
 251         lo_dac = 3;
 252         hs_switch = 0;
 253         /* we dont use linein in this so set to NC */
 254         snd_soc_dapm_disable_pin(dapm, "LINEINL");
 255         snd_soc_dapm_disable_pin(dapm, "LINEINR");
 256         snd_soc_dapm_sync(dapm);
 257
 258         /* Headset and button jack detection */
 259         ret_val = snd_soc_jack_new(codec, "Intel(R) MID Audio Jack",
 260                         SND_JACK_HEADSET | SND_JACK_BTN_0 |
 261                         SND_JACK_BTN_1, &mfld_jack);
 262         if (ret_val) {
 263                 pr_err("jack creation failed\n");
 264                 return ret_val;
 265         }
 266
 267         ret_val = snd_soc_jack_add_pins(&mfld_jack,
 268                         ARRAY_SIZE(mfld_jack_pins), mfld_jack_pins);
 269         if (ret_val) {
 270                 pr_err("adding jack pins failed\n");
 271                 return ret_val;
 272         }
 273         ret_val = snd_soc_jack_add_zones(&mfld_jack,
 274                         ARRAY_SIZE(mfld_zones), mfld_zones);
 275         if (ret_val) {
 276                 pr_err("adding jack zones failed\n");
 277                 return ret_val;
 278         }
 279
 280         /* we want to check if anything is inserted at boot,
 281          * so send a fake event to codec and it will read adc
 282          * to find if anything is there or not */
 283         mfld_jack_check(MFLD_JACK_INSERT);
 284         return ret_val;
 285 }
 286
 287 struct snd_soc_dai_link mfld_msic_dailink[] = {
 288         {
 289                 .name = "Medfield Headset",
 290                 .stream_name = "Headset",
 291                 .cpu_dai_name = "Headset-cpu-dai",
 292                 .codec_dai_name = "SN95031 Headset",
 293                 .codec_name = "sn95031",
 294                 .platform_name = "sst-platform",
 295                 .init = mfld_init,
 296         },
 297         {
 298                 .name = "Medfield Speaker",
 299                 .stream_name = "Speaker",
 300                 .cpu_dai_name = "Speaker-cpu-dai",
 301                 .codec_dai_name = "SN95031 Speaker",
 302                 .codec_name = "sn95031",
 303                 .platform_name = "sst-platform",
 304                 .init = NULL,
 305         },
 306         {
 307                 .name = "Medfield Vibra",
 308                 .stream_name = "Vibra1",
 309                 .cpu_dai_name = "Vibra1-cpu-dai",
 310                 .codec_dai_name = "SN95031 Vibra1",
 311                 .codec_name = "sn95031",
 312                 .platform_name = "sst-platform",
 313                 .init = NULL,
 314         },
 315         {
 316                 .name = "Medfield Haptics",
 317                 .stream_name = "Vibra2",
 318                 .cpu_dai_name = "Vibra2-cpu-dai",
 319                 .codec_dai_name = "SN95031 Vibra2",
 320                 .codec_name = "sn95031",
 321                 .platform_name = "sst-platform",
 322                 .init = NULL,
 323         },
 324 };
 325
 326 /* SoC card */
 327 static struct snd_soc_card snd_soc_card_mfld = {
 328         .name = "medfield_audio",
 329         .dai_link = mfld_msic_dailink,
 330         .num_links = ARRAY_SIZE(mfld_msic_dailink),
 331 };
 332
 333 static irqreturn_t snd_mfld_jack_intr_handler(int irq, void *dev)
 334 {
 335         struct mfld_mc_private *mc_private = (struct mfld_mc_private *) dev;
 336
 337         memcpy_fromio(&mc_private->interrupt_status,
 338                         ((void *)(mc_private->int_base)),
 339                         sizeof(u8));
 340         return IRQ_WAKE_THREAD;
 341 }
 342
 343 static irqreturn_t snd_mfld_jack_detection(int irq, void *data)
 344 {
 345         struct mfld_mc_private *mc_drv_ctx = (struct mfld_mc_private *) data;
 346
 347         if (mfld_jack.codec == NULL)
 348                 return IRQ_HANDLED;
 349         mfld_jack_check(mc_drv_ctx->interrupt_status);
 350
 351         return IRQ_HANDLED;
 352 }
 353
 354 static int __devinit snd_mfld_mc_probe(struct platform_device *pdev)
 355 {
 356         int ret_val = 0, irq;
 357         struct mfld_mc_private *mc_drv_ctx;
 358         struct resource *irq_mem;
 359
 360         pr_debug("snd_mfld_mc_probe called\n");
 361
 362         /* retrive the irq number */
 363         irq = platform_get_irq(pdev, 0);
 364
 365         /* audio interrupt base of SRAM location where
 366          * interrupts are stored by System FW */
 367         mc_drv_ctx = kzalloc(sizeof(*mc_drv_ctx), GFP_ATOMIC);
 368         if (!mc_drv_ctx) {
 369                 pr_err("allocation failed\n");
 370                 return -ENOMEM;
 371         }
 372
 373         irq_mem = platform_get_resource_byname(
 374                                 pdev, IORESOURCE_MEM, "IRQ_BASE");
 375         if (!irq_mem) {
 376                 pr_err("no mem resource given\n");
 377                 ret_val = -ENODEV;
 378                 goto unalloc;
 379         }
 380         mc_drv_ctx->int_base = ioremap_nocache(irq_mem->start,
 381                                         resource_size(irq_mem));
 382         if (!mc_drv_ctx->int_base) {
 383                 pr_err("Mapping of cache failed\n");
 384                 ret_val = -ENOMEM;
 385                 goto unalloc;
 386         }
 387         /* register for interrupt */
 388         ret_val = request_threaded_irq(irq, snd_mfld_jack_intr_handler,
 389                         snd_mfld_jack_detection,
 390                         IRQF_SHARED, pdev->dev.driver->name, mc_drv_ctx);
 391         if (ret_val) {
 392                 pr_err("cannot register IRQ\n");
 393                 goto unalloc;
 394         }
 395         /* register the soc card */
 396         snd_soc_card_mfld.dev = &pdev->dev;
 397         ret_val = snd_soc_register_card(&snd_soc_card_mfld);
 398         if (ret_val) {
 399                 pr_debug("snd_soc_register_card failed %d\n", ret_val);
 400                 goto freeirq;
 401         }
 402         platform_set_drvdata(pdev, mc_drv_ctx);
 403         pr_debug("successfully exited probe\n");
 404         return ret_val;
 405
 406 freeirq:
 407         free_irq(irq, mc_drv_ctx);
 408 unalloc:
 409         kfree(mc_drv_ctx);
 410         return ret_val;
 411 }
 412
 413 static int __devexit snd_mfld_mc_remove(struct platform_device *pdev)
 414 {
 415         struct mfld_mc_private *mc_drv_ctx = platform_get_drvdata(pdev);
 416
 417         pr_debug("snd_mfld_mc_remove called\n");
 418         free_irq(platform_get_irq(pdev, 0), mc_drv_ctx);
 419         snd_soc_unregister_card(&snd_soc_card_mfld);
 420         kfree(mc_drv_ctx);
 421         platform_set_drvdata(pdev, NULL);
 422         return 0;
 423 }
 424
 425 static struct platform_driver snd_mfld_mc_driver = {
 426         .driver = {
 427                 .owner = THIS_MODULE,
 428                 .name = "msic_audio",
 429         },
 430         .probe = snd_mfld_mc_probe,
 431         .remove = __devexit_p(snd_mfld_mc_remove),
 432 };
 433
 434 static int __init snd_mfld_driver_init(void)
 435 {
 436         pr_debug("snd_mfld_driver_init called\n");
 437         return platform_driver_register(&snd_mfld_mc_driver);
 438 }
 439 module_init(snd_mfld_driver_init);
 440
 441 static void __exit snd_mfld_driver_exit(void)
 442 {
 443         pr_debug("snd_mfld_driver_exit called\n");
 444         platform_driver_unregister(&snd_mfld_mc_driver);
 445 }
 446 module_exit(snd_mfld_driver_exit);
 447
 448 MODULE_DESCRIPTION("ASoC Intel(R) MID Machine driver");
 449 MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
 450 MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
 451 MODULE_LICENSE("GPL v2");
 452 MODULE_ALIAS("platform:msic-audio");