sound/soc/codecs/rt1308-sdw.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // rt1308-sdw.c -- rt1308 ALSA SoC audio driver
   4 //
   5 // Copyright(c) 2019 Realtek Semiconductor Corp.
   6 //
   7 //
   8 #include <linux/delay.h>
   9 #include <linux/device.h>
  10 #include <linux/pm_runtime.h>
  11 #include <linux/mod_devicetable.h>
  12 #include <linux/soundwire/sdw.h>
  13 #include <linux/soundwire/sdw_type.h>
  14 #include <linux/soundwire/sdw_registers.h>
  15 #include <linux/module.h>
  16 #include <linux/regmap.h>
  17 #include <sound/core.h>
  18 #include <sound/pcm.h>
  19 #include <sound/pcm_params.h>
  20 #include <sound/soc.h>
  21 #include <sound/soc-dapm.h>
  22 #include <sound/initval.h>
  23
  24 #include "rt1308.h"
  25 #include "rt1308-sdw.h"
  26
  27 static bool rt1308_readable_register(struct device *dev, unsigned int reg)
  28 {
  29         switch (reg) {
  30         case 0x00e0:
  31         case 0x00f0:
  32         case 0x2f01 ... 0x2f07:
  33         case 0x3000 ... 0x3001:
  34         case 0x3004 ... 0x3005:
  35         case 0x3008:
  36         case 0x300a:
  37         case 0xc000 ... 0xcff3:
  38                 return true;
  39         default:
  40                 return false;
  41         }
  42 }
  43
  44 static bool rt1308_volatile_register(struct device *dev, unsigned int reg)
  45 {
  46         switch (reg) {
  47         case 0x2f01 ... 0x2f07:
  48         case 0x3000 ... 0x3001:
  49         case 0x3004 ... 0x3005:
  50         case 0x3008:
  51         case 0x300a:
  52         case 0xc000:
  53                 return true;
  54         default:
  55                 return false;
  56         }
  57 }
  58
  59 static const struct regmap_config rt1308_sdw_regmap = {
  60         .reg_bits = 32,
  61         .val_bits = 8,
  62         .readable_reg = rt1308_readable_register,
  63         .volatile_reg = rt1308_volatile_register,
  64         .max_register = 0xcfff,
  65         .reg_defaults = rt1308_reg_defaults,
  66         .num_reg_defaults = ARRAY_SIZE(rt1308_reg_defaults),
  67         .cache_type = REGCACHE_RBTREE,
  68         .use_single_read = true,
  69         .use_single_write = true,
  70 };
  71
  72 /* Bus clock frequency */
  73 #define RT1308_CLK_FREQ_9600000HZ 9600000
  74 #define RT1308_CLK_FREQ_12000000HZ 12000000
  75 #define RT1308_CLK_FREQ_6000000HZ 6000000
  76 #define RT1308_CLK_FREQ_4800000HZ 4800000
  77 #define RT1308_CLK_FREQ_2400000HZ 2400000
  78 #define RT1308_CLK_FREQ_12288000HZ 12288000
  79
  80 static int rt1308_clock_config(struct device *dev)
  81 {
  82         struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
  83         unsigned int clk_freq, value;
  84
  85         clk_freq = (rt1308->params.curr_dr_freq >> 1);
  86
  87         switch (clk_freq) {
  88         case RT1308_CLK_FREQ_12000000HZ:
  89                 value = 0x0;
  90                 break;
  91         case RT1308_CLK_FREQ_6000000HZ:
  92                 value = 0x1;
  93                 break;
  94         case RT1308_CLK_FREQ_9600000HZ:
  95                 value = 0x2;
  96                 break;
  97         case RT1308_CLK_FREQ_4800000HZ:
  98                 value = 0x3;
  99                 break;
 100         case RT1308_CLK_FREQ_2400000HZ:
 101                 value = 0x4;
 102                 break;
 103         case RT1308_CLK_FREQ_12288000HZ:
 104                 value = 0x5;
 105                 break;
 106         default:
 107                 return -EINVAL;
 108         }
 109
 110         regmap_write(rt1308->regmap, 0xe0, value);
 111         regmap_write(rt1308->regmap, 0xf0, value);
 112
 113         dev_dbg(dev, "%s complete, clk_freq=%d\n", __func__, clk_freq);
 114
 115         return 0;
 116 }
 117
 118 static int rt1308_read_prop(struct sdw_slave *slave)
 119 {
 120         struct sdw_slave_prop *prop = &slave->prop;
 121         int nval, i, num_of_ports = 1;
 122         u32 bit;
 123         unsigned long addr;
 124         struct sdw_dpn_prop *dpn;
 125
 126         prop->paging_support = true;
 127
 128         /* first we need to allocate memory for set bits in port lists */
 129         prop->source_ports = 0x00; /* BITMAP: 00010100 (not enable yet) */
 130         prop->sink_ports = 0x2; /* BITMAP:  00000010 */
 131
 132         /* for sink */
 133         nval = hweight32(prop->sink_ports);
 134         num_of_ports += nval;
 135         prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
 136                                                 sizeof(*prop->sink_dpn_prop),
 137                                                 GFP_KERNEL);
 138         if (!prop->sink_dpn_prop)
 139                 return -ENOMEM;
 140
 141         i = 0;
 142         dpn = prop->sink_dpn_prop;
 143         addr = prop->sink_ports;
 144         for_each_set_bit(bit, &addr, 32) {
 145                 dpn[i].num = bit;
 146                 dpn[i].type = SDW_DPN_FULL;
 147                 dpn[i].simple_ch_prep_sm = true;
 148                 dpn[i].ch_prep_timeout = 10;
 149                 i++;
 150         }
 151
 152         /* Allocate port_ready based on num_of_ports */
 153         slave->port_ready = devm_kcalloc(&slave->dev, num_of_ports,
 154                                         sizeof(*slave->port_ready),
 155                                         GFP_KERNEL);
 156         if (!slave->port_ready)
 157                 return -ENOMEM;
 158
 159         /* Initialize completion */
 160         for (i = 0; i < num_of_ports; i++)
 161                 init_completion(&slave->port_ready[i]);
 162
 163         /* set the timeout values */
 164         prop->clk_stop_timeout = 20;
 165
 166         dev_dbg(&slave->dev, "%s\n", __func__);
 167
 168         return 0;
 169 }
 170
 171 static int rt1308_io_init(struct device *dev, struct sdw_slave *slave)
 172 {
 173         struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
 174         int ret = 0;
 175         unsigned int efuse_m_btl_l, efuse_m_btl_r, tmp;
 176         unsigned int efuse_c_btl_l, efuse_c_btl_r;
 177
 178         if (rt1308->hw_init)
 179                 return 0;
 180
 181         ret = rt1308_read_prop(slave);
 182         if (ret < 0)
 183                 goto _io_init_err_;
 184
 185         if (rt1308->first_hw_init) {
 186                 regcache_cache_only(rt1308->regmap, false);
 187                 regcache_cache_bypass(rt1308->regmap, true);
 188         }
 189
 190         /*
 191          * PM runtime is only enabled when a Slave reports as Attached
 192          */
 193         if (!rt1308->first_hw_init) {
 194                 /* set autosuspend parameters */
 195                 pm_runtime_set_autosuspend_delay(&slave->dev, 3000);
 196                 pm_runtime_use_autosuspend(&slave->dev);
 197
 198                 /* update count of parent 'active' children */
 199                 pm_runtime_set_active(&slave->dev);
 200
 201                 /* make sure the device does not suspend immediately */
 202                 pm_runtime_mark_last_busy(&slave->dev);
 203
 204                 pm_runtime_enable(&slave->dev);
 205         }
 206
 207         pm_runtime_get_noresume(&slave->dev);
 208
 209         /* sw reset */
 210         regmap_write(rt1308->regmap, RT1308_SDW_RESET, 0);
 211
 212         /* read efuse */
 213         regmap_write(rt1308->regmap, 0xc360, 0x01);
 214         regmap_write(rt1308->regmap, 0xc361, 0x80);
 215         regmap_write(rt1308->regmap, 0xc7f0, 0x04);
 216         regmap_write(rt1308->regmap, 0xc7f1, 0xfe);
 217         msleep(100);
 218         regmap_write(rt1308->regmap, 0xc7f0, 0x44);
 219         msleep(20);
 220         regmap_write(rt1308->regmap, 0xc240, 0x10);
 221
 222         regmap_read(rt1308->regmap, 0xc861, &tmp);
 223         efuse_m_btl_l = tmp;
 224         regmap_read(rt1308->regmap, 0xc860, &tmp);
 225         efuse_m_btl_l = efuse_m_btl_l | (tmp << 8);
 226         regmap_read(rt1308->regmap, 0xc863, &tmp);
 227         efuse_c_btl_l = tmp;
 228         regmap_read(rt1308->regmap, 0xc862, &tmp);
 229         efuse_c_btl_l = efuse_c_btl_l | (tmp << 8);
 230         regmap_read(rt1308->regmap, 0xc871, &tmp);
 231         efuse_m_btl_r = tmp;
 232         regmap_read(rt1308->regmap, 0xc870, &tmp);
 233         efuse_m_btl_r = efuse_m_btl_r | (tmp << 8);
 234         regmap_read(rt1308->regmap, 0xc873, &tmp);
 235         efuse_c_btl_r = tmp;
 236         regmap_read(rt1308->regmap, 0xc872, &tmp);
 237         efuse_c_btl_r = efuse_c_btl_r | (tmp << 8);
 238         dev_info(&slave->dev, "%s m_btl_l=0x%x, m_btl_r=0x%x\n", __func__,
 239                 efuse_m_btl_l, efuse_m_btl_r);
 240         dev_info(&slave->dev, "%s c_btl_l=0x%x, c_btl_r=0x%x\n", __func__,
 241                 efuse_c_btl_l, efuse_c_btl_r);
 242
 243         /* initial settings */
 244         regmap_write(rt1308->regmap, 0xc103, 0xc0);
 245         regmap_write(rt1308->regmap, 0xc030, 0x17);
 246         regmap_write(rt1308->regmap, 0xc031, 0x81);
 247         regmap_write(rt1308->regmap, 0xc032, 0x26);
 248         regmap_write(rt1308->regmap, 0xc040, 0x80);
 249         regmap_write(rt1308->regmap, 0xc041, 0x80);
 250         regmap_write(rt1308->regmap, 0xc042, 0x06);
 251         regmap_write(rt1308->regmap, 0xc052, 0x0a);
 252         regmap_write(rt1308->regmap, 0xc080, 0x0a);
 253         regmap_write(rt1308->regmap, 0xc060, 0x02);
 254         regmap_write(rt1308->regmap, 0xc061, 0x75);
 255         regmap_write(rt1308->regmap, 0xc062, 0x05);
 256         regmap_write(rt1308->regmap, 0xc171, 0x07);
 257         regmap_write(rt1308->regmap, 0xc173, 0x0d);
 258         regmap_write(rt1308->regmap, 0xc311, 0x7f);
 259         regmap_write(rt1308->regmap, 0xc900, 0x90);
 260         regmap_write(rt1308->regmap, 0xc1a0, 0x84);
 261         regmap_write(rt1308->regmap, 0xc1a1, 0x01);
 262         regmap_write(rt1308->regmap, 0xc360, 0x78);
 263         regmap_write(rt1308->regmap, 0xc361, 0x87);
 264         regmap_write(rt1308->regmap, 0xc0a1, 0x71);
 265         regmap_write(rt1308->regmap, 0xc210, 0x00);
 266         regmap_write(rt1308->regmap, 0xc070, 0x00);
 267         regmap_write(rt1308->regmap, 0xc100, 0xd7);
 268         regmap_write(rt1308->regmap, 0xc101, 0xd7);
 269         regmap_write(rt1308->regmap, 0xc300, 0x09);
 270
 271         if (rt1308->first_hw_init) {
 272                 regcache_cache_bypass(rt1308->regmap, false);
 273                 regcache_mark_dirty(rt1308->regmap);
 274         } else
 275                 rt1308->first_hw_init = true;
 276
 277         /* Mark Slave initialization complete */
 278         rt1308->hw_init = true;
 279
 280         pm_runtime_mark_last_busy(&slave->dev);
 281         pm_runtime_put_autosuspend(&slave->dev);
 282
 283         dev_dbg(&slave->dev, "%s hw_init complete\n", __func__);
 284
 285 _io_init_err_:
 286         return ret;
 287 }
 288
 289 static int rt1308_update_status(struct sdw_slave *slave,
 290                                         enum sdw_slave_status status)
 291 {
 292         struct  rt1308_sdw_priv *rt1308 = dev_get_drvdata(&slave->dev);
 293
 294         /* Update the status */
 295         rt1308->status = status;
 296
 297         if (status == SDW_SLAVE_UNATTACHED)
 298                 rt1308->hw_init = false;
 299
 300         /*
 301          * Perform initialization only if slave status is present and
 302          * hw_init flag is false
 303          */
 304         if (rt1308->hw_init || rt1308->status != SDW_SLAVE_ATTACHED)
 305                 return 0;
 306
 307         /* perform I/O transfers required for Slave initialization */
 308         return rt1308_io_init(&slave->dev, slave);
 309 }
 310
 311 static int rt1308_bus_config(struct sdw_slave *slave,
 312                                 struct sdw_bus_params *params)
 313 {
 314         struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(&slave->dev);
 315         int ret;
 316
 317         memcpy(&rt1308->params, params, sizeof(*params));
 318
 319         ret = rt1308_clock_config(&slave->dev);
 320         if (ret < 0)
 321                 dev_err(&slave->dev, "Invalid clk config");
 322
 323         return ret;
 324 }
 325
 326 static int rt1308_interrupt_callback(struct sdw_slave *slave,
 327                                         struct sdw_slave_intr_status *status)
 328 {
 329         dev_dbg(&slave->dev,
 330                 "%s control_port_stat=%x", __func__, status->control_port);
 331
 332         return 0;
 333 }
 334
 335 static int rt1308_classd_event(struct snd_soc_dapm_widget *w,
 336         struct snd_kcontrol *kcontrol, int event)
 337 {
 338         struct snd_soc_component *component =
 339                 snd_soc_dapm_to_component(w->dapm);
 340
 341         switch (event) {
 342         case SND_SOC_DAPM_POST_PMU:
 343                 msleep(30);
 344                 snd_soc_component_update_bits(component,
 345                         RT1308_SDW_OFFSET | (RT1308_POWER_STATUS << 4),
 346                         0x3,    0x3);
 347                 msleep(40);
 348                 break;
 349         case SND_SOC_DAPM_PRE_PMD:
 350                 snd_soc_component_update_bits(component,
 351                         RT1308_SDW_OFFSET | (RT1308_POWER_STATUS << 4),
 352                         0x3, 0);
 353                 usleep_range(150000, 200000);
 354                 break;
 355
 356         default:
 357                 break;
 358         }
 359
 360         return 0;
 361 }
 362
 363 static const char * const rt1308_rx_data_ch_select[] = {
 364         "LR",
 365         "LL",
 366         "RL",
 367         "RR",
 368 };
 369
 370 static SOC_ENUM_SINGLE_DECL(rt1308_rx_data_ch_enum,
 371         RT1308_SDW_OFFSET | (RT1308_DATA_PATH << 4), 0,
 372         rt1308_rx_data_ch_select);
 373
 374 static const struct snd_kcontrol_new rt1308_snd_controls[] = {
 375
 376         /* I2S Data Channel Selection */
 377         SOC_ENUM("RX Channel Select", rt1308_rx_data_ch_enum),
 378 };
 379
 380 static const struct snd_kcontrol_new rt1308_sto_dac_l =
 381         SOC_DAPM_SINGLE_AUTODISABLE("Switch",
 382                 RT1308_SDW_OFFSET_BYTE3 | (RT1308_DAC_SET << 4),
 383                 RT1308_DVOL_MUTE_L_EN_SFT, 1, 1);
 384
 385 static const struct snd_kcontrol_new rt1308_sto_dac_r =
 386         SOC_DAPM_SINGLE_AUTODISABLE("Switch",
 387                 RT1308_SDW_OFFSET_BYTE3 | (RT1308_DAC_SET << 4),
 388                 RT1308_DVOL_MUTE_R_EN_SFT, 1, 1);
 389
 390 static const struct snd_soc_dapm_widget rt1308_dapm_widgets[] = {
 391         /* Audio Interface */
 392         SND_SOC_DAPM_AIF_IN("AIF1RX", "DP1 Playback", 0, SND_SOC_NOPM, 0, 0),
 393
 394         /* Supply Widgets */
 395         SND_SOC_DAPM_SUPPLY("MBIAS20U",
 396                 RT1308_SDW_OFFSET | (RT1308_POWER << 4),        7, 0, NULL, 0),
 397         SND_SOC_DAPM_SUPPLY("ALDO",
 398                 RT1308_SDW_OFFSET | (RT1308_POWER << 4),        6, 0, NULL, 0),
 399         SND_SOC_DAPM_SUPPLY("DBG",
 400                 RT1308_SDW_OFFSET | (RT1308_POWER << 4),        5, 0, NULL, 0),
 401         SND_SOC_DAPM_SUPPLY("DACL",
 402                 RT1308_SDW_OFFSET | (RT1308_POWER << 4),        4, 0, NULL, 0),
 403         SND_SOC_DAPM_SUPPLY("CLK25M",
 404                 RT1308_SDW_OFFSET | (RT1308_POWER << 4),        2, 0, NULL, 0),
 405         SND_SOC_DAPM_SUPPLY("ADC_R",
 406                 RT1308_SDW_OFFSET | (RT1308_POWER << 4),        1, 0, NULL, 0),
 407         SND_SOC_DAPM_SUPPLY("ADC_L",
 408                 RT1308_SDW_OFFSET | (RT1308_POWER << 4),        0, 0, NULL, 0),
 409         SND_SOC_DAPM_SUPPLY("DAC Power",
 410                 RT1308_SDW_OFFSET | (RT1308_POWER << 4),        3, 0, NULL, 0),
 411
 412         SND_SOC_DAPM_SUPPLY("DLDO",
 413                 RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4),  5, 0, NULL, 0),
 414         SND_SOC_DAPM_SUPPLY("VREF",
 415                 RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4),  4, 0, NULL, 0),
 416         SND_SOC_DAPM_SUPPLY("MIXER_R",
 417                 RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4),  2, 0, NULL, 0),
 418         SND_SOC_DAPM_SUPPLY("MIXER_L",
 419                 RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4),  1, 0, NULL, 0),
 420         SND_SOC_DAPM_SUPPLY("MBIAS4U",
 421                 RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4),  0, 0, NULL, 0),
 422
 423         SND_SOC_DAPM_SUPPLY("PLL2_LDO",
 424                 RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 4, 0, NULL, 0),
 425         SND_SOC_DAPM_SUPPLY("PLL2B",
 426                 RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 3, 0, NULL, 0),
 427         SND_SOC_DAPM_SUPPLY("PLL2F",
 428                 RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 2, 0, NULL, 0),
 429         SND_SOC_DAPM_SUPPLY("PLL2F2",
 430                 RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 1, 0, NULL, 0),
 431         SND_SOC_DAPM_SUPPLY("PLL2B2",
 432                 RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 0, 0, NULL, 0),
 433
 434         /* Digital Interface */
 435         SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
 436         SND_SOC_DAPM_SWITCH("DAC L", SND_SOC_NOPM, 0, 0, &rt1308_sto_dac_l),
 437         SND_SOC_DAPM_SWITCH("DAC R", SND_SOC_NOPM, 0, 0, &rt1308_sto_dac_r),
 438
 439         /* Output Lines */
 440         SND_SOC_DAPM_PGA_E("CLASS D", SND_SOC_NOPM, 0, 0, NULL, 0,
 441                 rt1308_classd_event,
 442                 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
 443         SND_SOC_DAPM_OUTPUT("SPOL"),
 444         SND_SOC_DAPM_OUTPUT("SPOR"),
 445 };
 446
 447 static const struct snd_soc_dapm_route rt1308_dapm_routes[] = {
 448
 449         { "DAC", NULL, "AIF1RX" },
 450
 451         { "DAC", NULL, "MBIAS20U" },
 452         { "DAC", NULL, "ALDO" },
 453         { "DAC", NULL, "DBG" },
 454         { "DAC", NULL, "DACL" },
 455         { "DAC", NULL, "CLK25M" },
 456         { "DAC", NULL, "ADC_R" },
 457         { "DAC", NULL, "ADC_L" },
 458         { "DAC", NULL, "DLDO" },
 459         { "DAC", NULL, "VREF" },
 460         { "DAC", NULL, "MIXER_R" },
 461         { "DAC", NULL, "MIXER_L" },
 462         { "DAC", NULL, "MBIAS4U" },
 463         { "DAC", NULL, "PLL2_LDO" },
 464         { "DAC", NULL, "PLL2B" },
 465         { "DAC", NULL, "PLL2F" },
 466         { "DAC", NULL, "PLL2F2" },
 467         { "DAC", NULL, "PLL2B2" },
 468
 469         { "DAC L", "Switch", "DAC" },
 470         { "DAC R", "Switch", "DAC" },
 471         { "DAC L", NULL, "DAC Power" },
 472         { "DAC R", NULL, "DAC Power" },
 473
 474         { "CLASS D", NULL, "DAC L" },
 475         { "CLASS D", NULL, "DAC R" },
 476         { "SPOL", NULL, "CLASS D" },
 477         { "SPOR", NULL, "CLASS D" },
 478 };
 479
 480 static int rt1308_set_sdw_stream(struct snd_soc_dai *dai, void *sdw_stream,
 481                                 int direction)
 482 {
 483         struct sdw_stream_data *stream;
 484
 485         stream = kzalloc(sizeof(*stream), GFP_KERNEL);
 486         if (!stream)
 487                 return -ENOMEM;
 488
 489         stream->sdw_stream = (struct sdw_stream_runtime *)sdw_stream;
 490
 491         /* Use tx_mask or rx_mask to configure stream tag and set dma_data */
 492         if (direction == SNDRV_PCM_STREAM_PLAYBACK)
 493                 dai->playback_dma_data = stream;
 494         else
 495                 dai->capture_dma_data = stream;
 496
 497         return 0;
 498 }
 499
 500 static void rt1308_sdw_shutdown(struct snd_pcm_substream *substream,
 501                                 struct snd_soc_dai *dai)
 502 {
 503         struct sdw_stream_data *stream;
 504
 505         stream = snd_soc_dai_get_dma_data(dai, substream);
 506         snd_soc_dai_set_dma_data(dai, substream, NULL);
 507         kfree(stream);
 508 }
 509
 510 static int rt1308_sdw_hw_params(struct snd_pcm_substream *substream,
 511         struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 512 {
 513         struct snd_soc_component *component = dai->component;
 514         struct rt1308_sdw_priv *rt1308 =
 515                 snd_soc_component_get_drvdata(component);
 516         struct sdw_stream_config stream_config;
 517         struct sdw_port_config port_config;
 518         enum sdw_data_direction direction;
 519         struct sdw_stream_data *stream;
 520         int retval, port, num_channels;
 521
 522         dev_dbg(dai->dev, "%s %s", __func__, dai->name);
 523         stream = snd_soc_dai_get_dma_data(dai, substream);
 524
 525         if (!stream)
 526                 return -EINVAL;
 527
 528         if (!rt1308->sdw_slave)
 529                 return -EINVAL;
 530
 531         /* SoundWire specific configuration */
 532         /* port 1 for playback */
 533         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 534                 direction = SDW_DATA_DIR_RX;
 535                 port = 1;
 536         } else {
 537                 return -EINVAL;
 538         }
 539
 540         stream_config.frame_rate = params_rate(params);
 541         stream_config.ch_count = params_channels(params);
 542         stream_config.bps = snd_pcm_format_width(params_format(params));
 543         stream_config.direction = direction;
 544
 545         num_channels = params_channels(params);
 546         port_config.ch_mask = (1 << (num_channels)) - 1;
 547         port_config.num = port;
 548
 549         retval = sdw_stream_add_slave(rt1308->sdw_slave, &stream_config,
 550                                 &port_config, 1, stream->sdw_stream);
 551         if (retval) {
 552                 dev_err(dai->dev, "Unable to configure port\n");
 553                 return retval;
 554         }
 555
 556         return retval;
 557 }
 558
 559 static int rt1308_sdw_pcm_hw_free(struct snd_pcm_substream *substream,
 560                                 struct snd_soc_dai *dai)
 561 {
 562         struct snd_soc_component *component = dai->component;
 563         struct rt1308_sdw_priv *rt1308 =
 564                 snd_soc_component_get_drvdata(component);
 565         struct sdw_stream_data *stream =
 566                 snd_soc_dai_get_dma_data(dai, substream);
 567
 568         if (!rt1308->sdw_slave)
 569                 return -EINVAL;
 570
 571         sdw_stream_remove_slave(rt1308->sdw_slave, stream->sdw_stream);
 572         return 0;
 573 }
 574
 575 /*
 576  * slave_ops: callbacks for get_clock_stop_mode, clock_stop and
 577  * port_prep are not defined for now
 578  */
 579 static struct sdw_slave_ops rt1308_slave_ops = {
 580         .read_prop = rt1308_read_prop,
 581         .interrupt_callback = rt1308_interrupt_callback,
 582         .update_status = rt1308_update_status,
 583         .bus_config = rt1308_bus_config,
 584 };
 585
 586 static const struct snd_soc_component_driver soc_component_sdw_rt1308 = {
 587         .controls = rt1308_snd_controls,
 588         .num_controls = ARRAY_SIZE(rt1308_snd_controls),
 589         .dapm_widgets = rt1308_dapm_widgets,
 590         .num_dapm_widgets = ARRAY_SIZE(rt1308_dapm_widgets),
 591         .dapm_routes = rt1308_dapm_routes,
 592         .num_dapm_routes = ARRAY_SIZE(rt1308_dapm_routes),
 593 };
 594
 595 static const struct snd_soc_dai_ops rt1308_aif_dai_ops = {
 596         .hw_params = rt1308_sdw_hw_params,
 597         .hw_free        = rt1308_sdw_pcm_hw_free,
 598         .set_sdw_stream = rt1308_set_sdw_stream,
 599         .shutdown       = rt1308_sdw_shutdown,
 600 };
 601
 602 #define RT1308_STEREO_RATES SNDRV_PCM_RATE_48000
 603 #define RT1308_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
 604                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S16_LE | \
 605                         SNDRV_PCM_FMTBIT_S24_LE)
 606
 607 static struct snd_soc_dai_driver rt1308_sdw_dai[] = {
 608         {
 609                 .name = "rt1308-aif",
 610                 .playback = {
 611                         .stream_name = "DP1 Playback",
 612                         .channels_min = 1,
 613                         .channels_max = 2,
 614                         .rates = RT1308_STEREO_RATES,
 615                         .formats = RT1308_FORMATS,
 616                 },
 617                 .ops = &rt1308_aif_dai_ops,
 618         },
 619 };
 620
 621 static int rt1308_sdw_init(struct device *dev, struct regmap *regmap,
 622                                 struct sdw_slave *slave)
 623 {
 624         struct rt1308_sdw_priv *rt1308;
 625         int ret;
 626
 627         rt1308 = devm_kzalloc(dev, sizeof(*rt1308), GFP_KERNEL);
 628         if (!rt1308)
 629                 return -ENOMEM;
 630
 631         dev_set_drvdata(dev, rt1308);
 632         rt1308->sdw_slave = slave;
 633         rt1308->regmap = regmap;
 634
 635         /*
 636          * Mark hw_init to false
 637          * HW init will be performed when device reports present
 638          */
 639         rt1308->hw_init = false;
 640         rt1308->first_hw_init = false;
 641
 642         ret =  devm_snd_soc_register_component(dev,
 643                                 &soc_component_sdw_rt1308,
 644                                 rt1308_sdw_dai,
 645                                 ARRAY_SIZE(rt1308_sdw_dai));
 646
 647         dev_dbg(&slave->dev, "%s\n", __func__);
 648
 649         return ret;
 650 }
 651
 652 static int rt1308_sdw_probe(struct sdw_slave *slave,
 653                                 const struct sdw_device_id *id)
 654 {
 655         struct regmap *regmap;
 656
 657         /* Assign ops */
 658         slave->ops = &rt1308_slave_ops;
 659
 660         /* Regmap Initialization */
 661         regmap = devm_regmap_init_sdw(slave, &rt1308_sdw_regmap);
 662         if (!regmap)
 663                 return -EINVAL;
 664
 665         rt1308_sdw_init(&slave->dev, regmap, slave);
 666
 667         return 0;
 668 }
 669
 670 static const struct sdw_device_id rt1308_id[] = {
 671         SDW_SLAVE_ENTRY(0x025d, 0x1308, 0),
 672         {},
 673 };
 674 MODULE_DEVICE_TABLE(sdw, rt1308_id);
 675
 676 static int rt1308_dev_suspend(struct device *dev)
 677 {
 678         struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
 679
 680         if (!rt1308->hw_init)
 681                 return 0;
 682
 683         regcache_cache_only(rt1308->regmap, true);
 684
 685         return 0;
 686 }
 687
 688 #define RT1308_PROBE_TIMEOUT 2000
 689
 690 static int rt1308_dev_resume(struct device *dev)
 691 {
 692         struct sdw_slave *slave = dev_to_sdw_dev(dev);
 693         struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
 694         unsigned long time;
 695
 696         if (!rt1308->hw_init)
 697                 return 0;
 698
 699         if (!slave->unattach_request)
 700                 goto regmap_sync;
 701
 702         time = wait_for_completion_timeout(&slave->initialization_complete,
 703                                 msecs_to_jiffies(RT1308_PROBE_TIMEOUT));
 704         if (!time) {
 705                 dev_err(&slave->dev, "Initialization not complete, timed out\n");
 706                 return -ETIMEDOUT;
 707         }
 708
 709 regmap_sync:
 710         slave->unattach_request = 0;
 711         regcache_cache_only(rt1308->regmap, false);
 712         regcache_sync_region(rt1308->regmap, 0xc000, 0xcfff);
 713
 714         return 0;
 715 }
 716
 717 static const struct dev_pm_ops rt1308_pm = {
 718         SET_SYSTEM_SLEEP_PM_OPS(rt1308_dev_suspend, rt1308_dev_resume)
 719         SET_RUNTIME_PM_OPS(rt1308_dev_suspend, rt1308_dev_resume, NULL)
 720 };
 721
 722 static struct sdw_driver rt1308_sdw_driver = {
 723         .driver = {
 724                 .name = "rt1308",
 725                 .owner = THIS_MODULE,
 726                 .pm = &rt1308_pm,
 727         },
 728         .probe = rt1308_sdw_probe,
 729         .ops = &rt1308_slave_ops,
 730         .id_table = rt1308_id,
 731 };
 732 module_sdw_driver(rt1308_sdw_driver);
 733
 734 MODULE_DESCRIPTION("ASoC RT1308 driver SDW");
 735 MODULE_AUTHOR("Shuming Fan <shumingf@realtek.com>");
 736 MODULE_LICENSE("GPL v2");