sound/soc/ux500/mop500_ab8500.c

   1 /*
   2  * Copyright (C) ST-Ericsson SA 2012
   3  *
   4  * Author: Ola Lilja <ola.o.lilja@stericsson.com>,
   5  *         Kristoffer Karlsson <kristoffer.karlsson@stericsson.com>
   6  *         for ST-Ericsson.
   7  *
   8  * License terms:
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as published
  12  * by the Free Software Foundation.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/device.h>
  17 #include <linux/io.h>
  18 #include <linux/clk.h>
  19
  20 #include <sound/soc.h>
  21 #include <sound/soc-dapm.h>
  22 #include <sound/pcm.h>
  23 #include <sound/pcm_params.h>
  24
  25 #include "ux500_pcm.h"
  26 #include "ux500_msp_dai.h"
  27 #include "../codecs/ab8500-codec.h"
  28
  29 #define TX_SLOT_MONO    0x0008
  30 #define TX_SLOT_STEREO  0x000a
  31 #define RX_SLOT_MONO    0x0001
  32 #define RX_SLOT_STEREO  0x0003
  33 #define TX_SLOT_8CH     0x00FF
  34 #define RX_SLOT_8CH     0x00FF
  35
  36 #define DEF_TX_SLOTS    TX_SLOT_STEREO
  37 #define DEF_RX_SLOTS    RX_SLOT_MONO
  38
  39 #define DRIVERMODE_NORMAL       0
  40 #define DRIVERMODE_CODEC_ONLY   1
  41
  42 /* Slot configuration */
  43 static unsigned int tx_slots = DEF_TX_SLOTS;
  44 static unsigned int rx_slots = DEF_RX_SLOTS;
  45
  46 /* Clocks */
  47 static const char * const enum_mclk[] = {
  48         "SYSCLK",
  49         "ULPCLK"
  50 };
  51 enum mclk {
  52         MCLK_SYSCLK,
  53         MCLK_ULPCLK,
  54 };
  55
  56 static SOC_ENUM_SINGLE_EXT_DECL(soc_enum_mclk, enum_mclk);
  57
  58 /* Private data for machine-part MOP500<->AB8500 */
  59 struct mop500_ab8500_drvdata {
  60         /* Clocks */
  61         enum mclk mclk_sel;
  62         struct clk *clk_ptr_intclk;
  63         struct clk *clk_ptr_sysclk;
  64         struct clk *clk_ptr_ulpclk;
  65 };
  66
  67 static inline const char *get_mclk_str(enum mclk mclk_sel)
  68 {
  69         switch (mclk_sel) {
  70         case MCLK_SYSCLK:
  71                 return "SYSCLK";
  72         case MCLK_ULPCLK:
  73                 return "ULPCLK";
  74         default:
  75                 return "Unknown";
  76         }
  77 }
  78
  79 static int mop500_ab8500_set_mclk(struct device *dev,
  80                                 struct mop500_ab8500_drvdata *drvdata)
  81 {
  82         int status;
  83         struct clk *clk_ptr;
  84
  85         if (IS_ERR(drvdata->clk_ptr_intclk)) {
  86                 dev_err(dev,
  87                         "%s: ERROR: intclk not initialized!\n", __func__);
  88                 return -EIO;
  89         }
  90
  91         switch (drvdata->mclk_sel) {
  92         case MCLK_SYSCLK:
  93                 clk_ptr = drvdata->clk_ptr_sysclk;
  94                 break;
  95         case MCLK_ULPCLK:
  96                 clk_ptr = drvdata->clk_ptr_ulpclk;
  97                 break;
  98         default:
  99                 return -EINVAL;
 100         }
 101
 102         if (IS_ERR(clk_ptr)) {
 103                 dev_err(dev, "%s: ERROR: %s not initialized!\n", __func__,
 104                         get_mclk_str(drvdata->mclk_sel));
 105                 return -EIO;
 106         }
 107
 108         status = clk_set_parent(drvdata->clk_ptr_intclk, clk_ptr);
 109         if (status)
 110                 dev_err(dev,
 111                         "%s: ERROR: Setting intclk parent to %s failed (ret = %d)!",
 112                         __func__, get_mclk_str(drvdata->mclk_sel), status);
 113         else
 114                 dev_dbg(dev,
 115                         "%s: intclk parent changed to %s.\n",
 116                         __func__, get_mclk_str(drvdata->mclk_sel));
 117
 118         return status;
 119 }
 120
 121 /*
 122  * Control-events
 123  */
 124
 125 static int mclk_input_control_get(struct snd_kcontrol *kcontrol,
 126                                 struct snd_ctl_elem_value *ucontrol)
 127 {
 128         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 129         struct mop500_ab8500_drvdata *drvdata =
 130                                 snd_soc_card_get_drvdata(codec->card);
 131
 132         ucontrol->value.enumerated.item[0] = drvdata->mclk_sel;
 133
 134         return 0;
 135 }
 136
 137 static int mclk_input_control_put(struct snd_kcontrol *kcontrol,
 138                                 struct snd_ctl_elem_value *ucontrol)
 139 {
 140         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 141         struct mop500_ab8500_drvdata *drvdata =
 142                                 snd_soc_card_get_drvdata(codec->card);
 143         unsigned int val = ucontrol->value.enumerated.item[0];
 144
 145         if (val > (unsigned int)MCLK_ULPCLK)
 146                 return -EINVAL;
 147         if (drvdata->mclk_sel == val)
 148                 return 0;
 149
 150         drvdata->mclk_sel = val;
 151
 152         return 1;
 153 }
 154
 155 /*
 156  * Controls
 157  */
 158
 159 static struct snd_kcontrol_new mop500_ab8500_ctrls[] = {
 160         SOC_ENUM_EXT("Master Clock Select",
 161                 soc_enum_mclk,
 162                 mclk_input_control_get, mclk_input_control_put),
 163         /* Digital interface - Clocks */
 164         SOC_SINGLE("Digital Interface Master Generator Switch",
 165                 AB8500_DIGIFCONF1, AB8500_DIGIFCONF1_ENMASTGEN,
 166                 1, 0),
 167         SOC_SINGLE("Digital Interface 0 Bit-clock Switch",
 168                 AB8500_DIGIFCONF1, AB8500_DIGIFCONF1_ENFSBITCLK0,
 169                 1, 0),
 170         SOC_SINGLE("Digital Interface 1 Bit-clock Switch",
 171                 AB8500_DIGIFCONF1, AB8500_DIGIFCONF1_ENFSBITCLK1,
 172                 1, 0),
 173         SOC_DAPM_PIN_SWITCH("Headset Left"),
 174         SOC_DAPM_PIN_SWITCH("Headset Right"),
 175         SOC_DAPM_PIN_SWITCH("Earpiece"),
 176         SOC_DAPM_PIN_SWITCH("Speaker Left"),
 177         SOC_DAPM_PIN_SWITCH("Speaker Right"),
 178         SOC_DAPM_PIN_SWITCH("LineOut Left"),
 179         SOC_DAPM_PIN_SWITCH("LineOut Right"),
 180         SOC_DAPM_PIN_SWITCH("Vibra 1"),
 181         SOC_DAPM_PIN_SWITCH("Vibra 2"),
 182         SOC_DAPM_PIN_SWITCH("Mic 1"),
 183         SOC_DAPM_PIN_SWITCH("Mic 2"),
 184         SOC_DAPM_PIN_SWITCH("LineIn Left"),
 185         SOC_DAPM_PIN_SWITCH("LineIn Right"),
 186         SOC_DAPM_PIN_SWITCH("DMic 1"),
 187         SOC_DAPM_PIN_SWITCH("DMic 2"),
 188         SOC_DAPM_PIN_SWITCH("DMic 3"),
 189         SOC_DAPM_PIN_SWITCH("DMic 4"),
 190         SOC_DAPM_PIN_SWITCH("DMic 5"),
 191         SOC_DAPM_PIN_SWITCH("DMic 6"),
 192 };
 193
 194 /* ASoC */
 195
 196 int mop500_ab8500_startup(struct snd_pcm_substream *substream)
 197 {
 198         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 199
 200         /* Set audio-clock source */
 201         return mop500_ab8500_set_mclk(rtd->card->dev,
 202                                 snd_soc_card_get_drvdata(rtd->card));
 203 }
 204
 205 void mop500_ab8500_shutdown(struct snd_pcm_substream *substream)
 206 {
 207         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 208         struct device *dev = rtd->card->dev;
 209
 210         dev_dbg(dev, "%s: Enter\n", __func__);
 211
 212         /* Reset slots configuration to default(s) */
 213         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 214                 tx_slots = DEF_TX_SLOTS;
 215         else
 216                 rx_slots = DEF_RX_SLOTS;
 217 }
 218
 219 int mop500_ab8500_hw_params(struct snd_pcm_substream *substream,
 220                         struct snd_pcm_hw_params *params)
 221 {
 222         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 223         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 224         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 225         struct device *dev = rtd->card->dev;
 226         unsigned int fmt;
 227         int channels, ret = 0, driver_mode, slots;
 228         unsigned int sw_codec, sw_cpu;
 229         bool is_playback;
 230
 231         dev_dbg(dev, "%s: Enter\n", __func__);
 232
 233         dev_dbg(dev, "%s: substream->pcm->name = %s\n"
 234                 "substream->pcm->id = %s.\n"
 235                 "substream->name = %s.\n"
 236                 "substream->number = %d.\n",
 237                 __func__,
 238                 substream->pcm->name,
 239                 substream->pcm->id,
 240                 substream->name,
 241                 substream->number);
 242
 243         channels = params_channels(params);
 244
 245         switch (params_format(params)) {
 246         case SNDRV_PCM_FORMAT_S32_LE:
 247                 sw_cpu = 32;
 248                 break;
 249
 250         case SNDRV_PCM_FORMAT_S16_LE:
 251                 sw_cpu = 16;
 252                 break;
 253
 254         default:
 255                 return -EINVAL;
 256         }
 257
 258         /* Setup codec depending on driver-mode */
 259         if (channels == 8)
 260                 driver_mode = DRIVERMODE_CODEC_ONLY;
 261         else
 262                 driver_mode = DRIVERMODE_NORMAL;
 263         dev_dbg(dev, "%s: Driver-mode: %s.\n", __func__,
 264                 (driver_mode == DRIVERMODE_NORMAL) ? "NORMAL" : "CODEC_ONLY");
 265
 266         /* Setup format */
 267
 268         if (driver_mode == DRIVERMODE_NORMAL) {
 269                 fmt = SND_SOC_DAIFMT_DSP_A |
 270                         SND_SOC_DAIFMT_CBM_CFM |
 271                         SND_SOC_DAIFMT_NB_NF |
 272                         SND_SOC_DAIFMT_CONT;
 273         } else {
 274                 fmt = SND_SOC_DAIFMT_DSP_A |
 275                         SND_SOC_DAIFMT_CBM_CFM |
 276                         SND_SOC_DAIFMT_NB_NF |
 277                         SND_SOC_DAIFMT_GATED;
 278         }
 279
 280         ret = snd_soc_dai_set_fmt(codec_dai, fmt);
 281         if (ret < 0) {
 282                 dev_err(dev,
 283                         "%s: ERROR: snd_soc_dai_set_fmt failed for codec_dai (ret = %d)!\n",
 284                         __func__, ret);
 285                 return ret;
 286         }
 287
 288         ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
 289         if (ret < 0) {
 290                 dev_err(dev,
 291                         "%s: ERROR: snd_soc_dai_set_fmt failed for cpu_dai (ret = %d)!\n",
 292                         __func__, ret);
 293                 return ret;
 294         }
 295
 296         /* Setup TDM-slots */
 297
 298         is_playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
 299         switch (channels) {
 300         case 1:
 301                 slots = 16;
 302                 tx_slots = (is_playback) ? TX_SLOT_MONO : 0;
 303                 rx_slots = (is_playback) ? 0 : RX_SLOT_MONO;
 304                 break;
 305         case 2:
 306                 slots = 16;
 307                 tx_slots = (is_playback) ? TX_SLOT_STEREO : 0;
 308                 rx_slots = (is_playback) ? 0 : RX_SLOT_STEREO;
 309                 break;
 310         case 8:
 311                 slots = 16;
 312                 tx_slots = (is_playback) ? TX_SLOT_8CH : 0;
 313                 rx_slots = (is_playback) ? 0 : RX_SLOT_8CH;
 314                 break;
 315         default:
 316                 return -EINVAL;
 317         }
 318
 319         if (driver_mode == DRIVERMODE_NORMAL)
 320                 sw_codec = sw_cpu;
 321         else
 322                 sw_codec = 20;
 323
 324         dev_dbg(dev, "%s: CPU-DAI TDM: TX=0x%04X RX=0x%04x\n", __func__,
 325                 tx_slots, rx_slots);
 326         ret = snd_soc_dai_set_tdm_slot(cpu_dai, tx_slots, rx_slots, slots,
 327                                 sw_cpu);
 328         if (ret)
 329                 return ret;
 330
 331         dev_dbg(dev, "%s: CODEC-DAI TDM: TX=0x%04X RX=0x%04x\n", __func__,
 332                 tx_slots, rx_slots);
 333         ret = snd_soc_dai_set_tdm_slot(codec_dai, tx_slots, rx_slots, slots,
 334                                 sw_codec);
 335         if (ret)
 336                 return ret;
 337
 338         return 0;
 339 }
 340
 341 struct snd_soc_ops mop500_ab8500_ops[] = {
 342         {
 343                 .hw_params = mop500_ab8500_hw_params,
 344                 .startup = mop500_ab8500_startup,
 345                 .shutdown = mop500_ab8500_shutdown,
 346         }
 347 };
 348
 349 int mop500_ab8500_machine_init(struct snd_soc_pcm_runtime *rtd)
 350 {
 351         struct snd_soc_codec *codec = rtd->codec;
 352         struct device *dev = rtd->card->dev;
 353         struct mop500_ab8500_drvdata *drvdata;
 354         int ret;
 355
 356         dev_dbg(dev, "%s Enter.\n", __func__);
 357
 358         /* Create driver private-data struct */
 359         drvdata = devm_kzalloc(dev, sizeof(struct mop500_ab8500_drvdata),
 360                         GFP_KERNEL);
 361         snd_soc_card_set_drvdata(rtd->card, drvdata);
 362
 363         /* Setup clocks */
 364
 365         drvdata->clk_ptr_sysclk = clk_get(dev, "sysclk");
 366         if (IS_ERR(drvdata->clk_ptr_sysclk))
 367                 dev_warn(dev, "%s: WARNING: clk_get failed for 'sysclk'!\n",
 368                         __func__);
 369         drvdata->clk_ptr_ulpclk = clk_get(dev, "ulpclk");
 370         if (IS_ERR(drvdata->clk_ptr_ulpclk))
 371                 dev_warn(dev, "%s: WARNING: clk_get failed for 'ulpclk'!\n",
 372                         __func__);
 373         drvdata->clk_ptr_intclk = clk_get(dev, "intclk");
 374         if (IS_ERR(drvdata->clk_ptr_intclk))
 375                 dev_warn(dev, "%s: WARNING: clk_get failed for 'intclk'!\n",
 376                         __func__);
 377
 378         /* Set intclk default parent to ulpclk */
 379         drvdata->mclk_sel = MCLK_ULPCLK;
 380         ret = mop500_ab8500_set_mclk(dev, drvdata);
 381         if (ret < 0)
 382                 dev_warn(dev, "%s: WARNING: mop500_ab8500_set_mclk!\n",
 383                         __func__);
 384
 385         drvdata->mclk_sel = MCLK_ULPCLK;
 386
 387         /* Add controls */
 388         ret = snd_soc_add_codec_controls(codec, mop500_ab8500_ctrls,
 389                         ARRAY_SIZE(mop500_ab8500_ctrls));
 390         if (ret < 0) {
 391                 pr_err("%s: Failed to add machine-controls (%d)!\n",
 392                                 __func__, ret);
 393                 return ret;
 394         }
 395
 396         ret = snd_soc_dapm_disable_pin(&codec->dapm, "Earpiece");
 397         ret |= snd_soc_dapm_disable_pin(&codec->dapm, "Speaker Left");
 398         ret |= snd_soc_dapm_disable_pin(&codec->dapm, "Speaker Right");
 399         ret |= snd_soc_dapm_disable_pin(&codec->dapm, "LineOut Left");
 400         ret |= snd_soc_dapm_disable_pin(&codec->dapm, "LineOut Right");
 401         ret |= snd_soc_dapm_disable_pin(&codec->dapm, "Vibra 1");
 402         ret |= snd_soc_dapm_disable_pin(&codec->dapm, "Vibra 2");
 403         ret |= snd_soc_dapm_disable_pin(&codec->dapm, "Mic 1");
 404         ret |= snd_soc_dapm_disable_pin(&codec->dapm, "Mic 2");
 405         ret |= snd_soc_dapm_disable_pin(&codec->dapm, "LineIn Left");
 406         ret |= snd_soc_dapm_disable_pin(&codec->dapm, "LineIn Right");
 407         ret |= snd_soc_dapm_disable_pin(&codec->dapm, "DMic 1");
 408         ret |= snd_soc_dapm_disable_pin(&codec->dapm, "DMic 2");
 409         ret |= snd_soc_dapm_disable_pin(&codec->dapm, "DMic 3");
 410         ret |= snd_soc_dapm_disable_pin(&codec->dapm, "DMic 4");
 411         ret |= snd_soc_dapm_disable_pin(&codec->dapm, "DMic 5");
 412         ret |= snd_soc_dapm_disable_pin(&codec->dapm, "DMic 6");
 413
 414         return ret;
 415 }
 416
 417 void mop500_ab8500_remove(struct snd_soc_card *card)
 418 {
 419         struct mop500_ab8500_drvdata *drvdata = snd_soc_card_get_drvdata(card);
 420
 421         if (drvdata->clk_ptr_sysclk != NULL)
 422                 clk_put(drvdata->clk_ptr_sysclk);
 423         if (drvdata->clk_ptr_ulpclk != NULL)
 424                 clk_put(drvdata->clk_ptr_ulpclk);
 425         if (drvdata->clk_ptr_intclk != NULL)
 426                 clk_put(drvdata->clk_ptr_intclk);
 427
 428         snd_soc_card_set_drvdata(card, drvdata);
 429 }