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