sound/soc/codecs/max98373-sdw.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 // Copyright (c) 2020, Maxim Integrated
   3
   4 #include <linux/acpi.h>
   5 #include <linux/delay.h>
   6 #include <linux/module.h>
   7 #include <linux/mod_devicetable.h>
   8 #include <linux/pm_runtime.h>
   9 #include <linux/regmap.h>
  10 #include <linux/slab.h>
  11 #include <sound/pcm.h>
  12 #include <sound/pcm_params.h>
  13 #include <sound/soc.h>
  14 #include <sound/tlv.h>
  15 #include <linux/of.h>
  16 #include <linux/soundwire/sdw.h>
  17 #include <linux/soundwire/sdw_type.h>
  18 #include <linux/soundwire/sdw_registers.h>
  19 #include "max98373.h"
  20 #include "max98373-sdw.h"
  21
  22 struct sdw_stream_data {
  23         struct sdw_stream_runtime *sdw_stream;
  24 };
  25
  26 static struct reg_default max98373_reg[] = {
  27         {MAX98373_R0040_SCP_INIT_STAT_1, 0x00},
  28         {MAX98373_R0041_SCP_INIT_MASK_1, 0x00},
  29         {MAX98373_R0042_SCP_INIT_STAT_2, 0x00},
  30         {MAX98373_R0044_SCP_CTRL, 0x00},
  31         {MAX98373_R0045_SCP_SYSTEM_CTRL, 0x00},
  32         {MAX98373_R0046_SCP_DEV_NUMBER, 0x00},
  33         {MAX98373_R0050_SCP_DEV_ID_0, 0x21},
  34         {MAX98373_R0051_SCP_DEV_ID_1, 0x01},
  35         {MAX98373_R0052_SCP_DEV_ID_2, 0x9F},
  36         {MAX98373_R0053_SCP_DEV_ID_3, 0x87},
  37         {MAX98373_R0054_SCP_DEV_ID_4, 0x08},
  38         {MAX98373_R0055_SCP_DEV_ID_5, 0x00},
  39         {MAX98373_R0060_SCP_FRAME_CTLR, 0x00},
  40         {MAX98373_R0070_SCP_FRAME_CTLR, 0x00},
  41         {MAX98373_R0100_DP1_INIT_STAT, 0x00},
  42         {MAX98373_R0101_DP1_INIT_MASK, 0x00},
  43         {MAX98373_R0102_DP1_PORT_CTRL, 0x00},
  44         {MAX98373_R0103_DP1_BLOCK_CTRL_1, 0x00},
  45         {MAX98373_R0104_DP1_PREPARE_STATUS, 0x00},
  46         {MAX98373_R0105_DP1_PREPARE_CTRL, 0x00},
  47         {MAX98373_R0120_DP1_CHANNEL_EN, 0x00},
  48         {MAX98373_R0122_DP1_SAMPLE_CTRL1, 0x00},
  49         {MAX98373_R0123_DP1_SAMPLE_CTRL2, 0x00},
  50         {MAX98373_R0124_DP1_OFFSET_CTRL1, 0x00},
  51         {MAX98373_R0125_DP1_OFFSET_CTRL2, 0x00},
  52         {MAX98373_R0126_DP1_HCTRL, 0x00},
  53         {MAX98373_R0127_DP1_BLOCK_CTRL3, 0x00},
  54         {MAX98373_R0130_DP1_CHANNEL_EN, 0x00},
  55         {MAX98373_R0132_DP1_SAMPLE_CTRL1, 0x00},
  56         {MAX98373_R0133_DP1_SAMPLE_CTRL2, 0x00},
  57         {MAX98373_R0134_DP1_OFFSET_CTRL1, 0x00},
  58         {MAX98373_R0135_DP1_OFFSET_CTRL2, 0x00},
  59         {MAX98373_R0136_DP1_HCTRL, 0x0136},
  60         {MAX98373_R0137_DP1_BLOCK_CTRL3, 0x00},
  61         {MAX98373_R0300_DP3_INIT_STAT, 0x00},
  62         {MAX98373_R0301_DP3_INIT_MASK, 0x00},
  63         {MAX98373_R0302_DP3_PORT_CTRL, 0x00},
  64         {MAX98373_R0303_DP3_BLOCK_CTRL_1, 0x00},
  65         {MAX98373_R0304_DP3_PREPARE_STATUS, 0x00},
  66         {MAX98373_R0305_DP3_PREPARE_CTRL, 0x00},
  67         {MAX98373_R0320_DP3_CHANNEL_EN, 0x00},
  68         {MAX98373_R0322_DP3_SAMPLE_CTRL1, 0x00},
  69         {MAX98373_R0323_DP3_SAMPLE_CTRL2, 0x00},
  70         {MAX98373_R0324_DP3_OFFSET_CTRL1, 0x00},
  71         {MAX98373_R0325_DP3_OFFSET_CTRL2, 0x00},
  72         {MAX98373_R0326_DP3_HCTRL, 0x00},
  73         {MAX98373_R0327_DP3_BLOCK_CTRL3, 0x00},
  74         {MAX98373_R0330_DP3_CHANNEL_EN, 0x00},
  75         {MAX98373_R0332_DP3_SAMPLE_CTRL1, 0x00},
  76         {MAX98373_R0333_DP3_SAMPLE_CTRL2, 0x00},
  77         {MAX98373_R0334_DP3_OFFSET_CTRL1, 0x00},
  78         {MAX98373_R0335_DP3_OFFSET_CTRL2, 0x00},
  79         {MAX98373_R0336_DP3_HCTRL, 0x00},
  80         {MAX98373_R0337_DP3_BLOCK_CTRL3, 0x00},
  81         {MAX98373_R2000_SW_RESET, 0x00},
  82         {MAX98373_R2001_INT_RAW1, 0x00},
  83         {MAX98373_R2002_INT_RAW2, 0x00},
  84         {MAX98373_R2003_INT_RAW3, 0x00},
  85         {MAX98373_R2004_INT_STATE1, 0x00},
  86         {MAX98373_R2005_INT_STATE2, 0x00},
  87         {MAX98373_R2006_INT_STATE3, 0x00},
  88         {MAX98373_R2007_INT_FLAG1, 0x00},
  89         {MAX98373_R2008_INT_FLAG2, 0x00},
  90         {MAX98373_R2009_INT_FLAG3, 0x00},
  91         {MAX98373_R200A_INT_EN1, 0x00},
  92         {MAX98373_R200B_INT_EN2, 0x00},
  93         {MAX98373_R200C_INT_EN3, 0x00},
  94         {MAX98373_R200D_INT_FLAG_CLR1, 0x00},
  95         {MAX98373_R200E_INT_FLAG_CLR2, 0x00},
  96         {MAX98373_R200F_INT_FLAG_CLR3, 0x00},
  97         {MAX98373_R2010_IRQ_CTRL, 0x00},
  98         {MAX98373_R2014_THERM_WARN_THRESH, 0x10},
  99         {MAX98373_R2015_THERM_SHDN_THRESH, 0x27},
 100         {MAX98373_R2016_THERM_HYSTERESIS, 0x01},
 101         {MAX98373_R2017_THERM_FOLDBACK_SET, 0xC0},
 102         {MAX98373_R2018_THERM_FOLDBACK_EN, 0x00},
 103         {MAX98373_R201E_PIN_DRIVE_STRENGTH, 0x55},
 104         {MAX98373_R2020_PCM_TX_HIZ_EN_1, 0xFE},
 105         {MAX98373_R2021_PCM_TX_HIZ_EN_2, 0xFF},
 106         {MAX98373_R2022_PCM_TX_SRC_1, 0x00},
 107         {MAX98373_R2023_PCM_TX_SRC_2, 0x00},
 108         {MAX98373_R2024_PCM_DATA_FMT_CFG, 0xC0},
 109         {MAX98373_R2025_AUDIO_IF_MODE, 0x00},
 110         {MAX98373_R2026_PCM_CLOCK_RATIO, 0x04},
 111         {MAX98373_R2027_PCM_SR_SETUP_1, 0x08},
 112         {MAX98373_R2028_PCM_SR_SETUP_2, 0x88},
 113         {MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, 0x00},
 114         {MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2, 0x00},
 115         {MAX98373_R202B_PCM_RX_EN, 0x00},
 116         {MAX98373_R202C_PCM_TX_EN, 0x00},
 117         {MAX98373_R202E_ICC_RX_CH_EN_1, 0x00},
 118         {MAX98373_R202F_ICC_RX_CH_EN_2, 0x00},
 119         {MAX98373_R2030_ICC_TX_HIZ_EN_1, 0xFF},
 120         {MAX98373_R2031_ICC_TX_HIZ_EN_2, 0xFF},
 121         {MAX98373_R2032_ICC_LINK_EN_CFG, 0x30},
 122         {MAX98373_R2034_ICC_TX_CNTL, 0x00},
 123         {MAX98373_R2035_ICC_TX_EN, 0x00},
 124         {MAX98373_R2036_SOUNDWIRE_CTRL, 0x05},
 125         {MAX98373_R203D_AMP_DIG_VOL_CTRL, 0x00},
 126         {MAX98373_R203E_AMP_PATH_GAIN, 0x08},
 127         {MAX98373_R203F_AMP_DSP_CFG, 0x02},
 128         {MAX98373_R2040_TONE_GEN_CFG, 0x00},
 129         {MAX98373_R2041_AMP_CFG, 0x03},
 130         {MAX98373_R2042_AMP_EDGE_RATE_CFG, 0x00},
 131         {MAX98373_R2043_AMP_EN, 0x00},
 132         {MAX98373_R2046_IV_SENSE_ADC_DSP_CFG, 0x04},
 133         {MAX98373_R2047_IV_SENSE_ADC_EN, 0x00},
 134         {MAX98373_R2051_MEAS_ADC_SAMPLING_RATE, 0x00},
 135         {MAX98373_R2052_MEAS_ADC_PVDD_FLT_CFG, 0x00},
 136         {MAX98373_R2053_MEAS_ADC_THERM_FLT_CFG, 0x00},
 137         {MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK, 0x00},
 138         {MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK, 0x00},
 139         {MAX98373_R2056_MEAS_ADC_PVDD_CH_EN, 0x00},
 140         {MAX98373_R2090_BDE_LVL_HOLD, 0x00},
 141         {MAX98373_R2091_BDE_GAIN_ATK_REL_RATE, 0x00},
 142         {MAX98373_R2092_BDE_CLIPPER_MODE, 0x00},
 143         {MAX98373_R2097_BDE_L1_THRESH, 0x00},
 144         {MAX98373_R2098_BDE_L2_THRESH, 0x00},
 145         {MAX98373_R2099_BDE_L3_THRESH, 0x00},
 146         {MAX98373_R209A_BDE_L4_THRESH, 0x00},
 147         {MAX98373_R209B_BDE_THRESH_HYST, 0x00},
 148         {MAX98373_R20A8_BDE_L1_CFG_1, 0x00},
 149         {MAX98373_R20A9_BDE_L1_CFG_2, 0x00},
 150         {MAX98373_R20AA_BDE_L1_CFG_3, 0x00},
 151         {MAX98373_R20AB_BDE_L2_CFG_1, 0x00},
 152         {MAX98373_R20AC_BDE_L2_CFG_2, 0x00},
 153         {MAX98373_R20AD_BDE_L2_CFG_3, 0x00},
 154         {MAX98373_R20AE_BDE_L3_CFG_1, 0x00},
 155         {MAX98373_R20AF_BDE_L3_CFG_2, 0x00},
 156         {MAX98373_R20B0_BDE_L3_CFG_3, 0x00},
 157         {MAX98373_R20B1_BDE_L4_CFG_1, 0x00},
 158         {MAX98373_R20B2_BDE_L4_CFG_2, 0x00},
 159         {MAX98373_R20B3_BDE_L4_CFG_3, 0x00},
 160         {MAX98373_R20B4_BDE_INFINITE_HOLD_RELEASE, 0x00},
 161         {MAX98373_R20B5_BDE_EN, 0x00},
 162         {MAX98373_R20B6_BDE_CUR_STATE_READBACK, 0x00},
 163         {MAX98373_R20D1_DHT_CFG, 0x01},
 164         {MAX98373_R20D2_DHT_ATTACK_CFG, 0x02},
 165         {MAX98373_R20D3_DHT_RELEASE_CFG, 0x03},
 166         {MAX98373_R20D4_DHT_EN, 0x00},
 167         {MAX98373_R20E0_LIMITER_THRESH_CFG, 0x00},
 168         {MAX98373_R20E1_LIMITER_ATK_REL_RATES, 0x00},
 169         {MAX98373_R20E2_LIMITER_EN, 0x00},
 170         {MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG, 0x00},
 171         {MAX98373_R20FF_GLOBAL_SHDN, 0x00},
 172         {MAX98373_R21FF_REV_ID, 0x42},
 173 };
 174
 175 static bool max98373_readable_register(struct device *dev, unsigned int reg)
 176 {
 177         switch (reg) {
 178         case MAX98373_R21FF_REV_ID:
 179         case MAX98373_R2010_IRQ_CTRL:
 180         /* SoundWire Control Port Registers */
 181         case MAX98373_R0040_SCP_INIT_STAT_1 ... MAX98373_R0070_SCP_FRAME_CTLR:
 182         /* Soundwire Data Port 1 Registers */
 183         case MAX98373_R0100_DP1_INIT_STAT ... MAX98373_R0137_DP1_BLOCK_CTRL3:
 184         /* Soundwire Data Port 3 Registers */
 185         case MAX98373_R0300_DP3_INIT_STAT ... MAX98373_R0337_DP3_BLOCK_CTRL3:
 186         case MAX98373_R2000_SW_RESET ... MAX98373_R200C_INT_EN3:
 187         case MAX98373_R2014_THERM_WARN_THRESH
 188                 ... MAX98373_R2018_THERM_FOLDBACK_EN:
 189         case MAX98373_R201E_PIN_DRIVE_STRENGTH
 190                 ... MAX98373_R2036_SOUNDWIRE_CTRL:
 191         case MAX98373_R203D_AMP_DIG_VOL_CTRL ... MAX98373_R2043_AMP_EN:
 192         case MAX98373_R2046_IV_SENSE_ADC_DSP_CFG
 193                 ... MAX98373_R2047_IV_SENSE_ADC_EN:
 194         case MAX98373_R2051_MEAS_ADC_SAMPLING_RATE
 195                 ... MAX98373_R2056_MEAS_ADC_PVDD_CH_EN:
 196         case MAX98373_R2090_BDE_LVL_HOLD ... MAX98373_R2092_BDE_CLIPPER_MODE:
 197         case MAX98373_R2097_BDE_L1_THRESH
 198                 ... MAX98373_R209B_BDE_THRESH_HYST:
 199         case MAX98373_R20A8_BDE_L1_CFG_1 ... MAX98373_R20B3_BDE_L4_CFG_3:
 200         case MAX98373_R20B5_BDE_EN ... MAX98373_R20B6_BDE_CUR_STATE_READBACK:
 201         case MAX98373_R20D1_DHT_CFG ... MAX98373_R20D4_DHT_EN:
 202         case MAX98373_R20E0_LIMITER_THRESH_CFG ... MAX98373_R20E2_LIMITER_EN:
 203         case MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG
 204                 ... MAX98373_R20FF_GLOBAL_SHDN:
 205                 return true;
 206         default:
 207                 return false;
 208         }
 209 };
 210
 211 static bool max98373_volatile_reg(struct device *dev, unsigned int reg)
 212 {
 213         switch (reg) {
 214         case MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK:
 215         case MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK:
 216         case MAX98373_R20B6_BDE_CUR_STATE_READBACK:
 217         case MAX98373_R21FF_REV_ID:
 218         /* SoundWire Control Port Registers */
 219         case MAX98373_R0040_SCP_INIT_STAT_1 ... MAX98373_R0070_SCP_FRAME_CTLR:
 220         /* Soundwire Data Port 1 Registers */
 221         case MAX98373_R0100_DP1_INIT_STAT ... MAX98373_R0137_DP1_BLOCK_CTRL3:
 222         /* Soundwire Data Port 3 Registers */
 223         case MAX98373_R0300_DP3_INIT_STAT ... MAX98373_R0337_DP3_BLOCK_CTRL3:
 224         case MAX98373_R2000_SW_RESET ... MAX98373_R2009_INT_FLAG3:
 225                 return true;
 226         default:
 227                 return false;
 228         }
 229 }
 230
 231 static const struct regmap_config max98373_sdw_regmap = {
 232         .reg_bits = 32,
 233         .val_bits = 8,
 234         .max_register = MAX98373_R21FF_REV_ID,
 235         .reg_defaults  = max98373_reg,
 236         .num_reg_defaults = ARRAY_SIZE(max98373_reg),
 237         .readable_reg = max98373_readable_register,
 238         .volatile_reg = max98373_volatile_reg,
 239         .cache_type = REGCACHE_RBTREE,
 240         .use_single_read = true,
 241         .use_single_write = true,
 242 };
 243
 244 /* Power management functions and structure */
 245 static __maybe_unused int max98373_suspend(struct device *dev)
 246 {
 247         struct max98373_priv *max98373 = dev_get_drvdata(dev);
 248
 249         regcache_cache_only(max98373->regmap, true);
 250
 251         return 0;
 252 }
 253
 254 static __maybe_unused int max98373_resume(struct device *dev)
 255 {
 256         struct sdw_slave *slave = dev_to_sdw_dev(dev);
 257         struct max98373_priv *max98373 = dev_get_drvdata(dev);
 258         unsigned long time;
 259
 260         if (!max98373->hw_init)
 261                 return 0;
 262
 263         if (!slave->unattach_request)
 264                 goto regmap_sync;
 265
 266         time = wait_for_completion_timeout(&slave->initialization_complete,
 267                                            msecs_to_jiffies(2000));
 268         if (!time) {
 269                 dev_err(dev, "Initialization not complete, timed out\n");
 270                 return -ETIMEDOUT;
 271         }
 272
 273 regmap_sync:
 274         slave->unattach_request = 0;
 275         regcache_cache_only(max98373->regmap, false);
 276         regcache_sync(max98373->regmap);
 277
 278         return 0;
 279 }
 280
 281 static const struct dev_pm_ops max98373_pm = {
 282         SET_SYSTEM_SLEEP_PM_OPS(max98373_suspend, max98373_resume)
 283         SET_RUNTIME_PM_OPS(max98373_suspend, max98373_resume, NULL)
 284 };
 285
 286 static int max98373_read_prop(struct sdw_slave *slave)
 287 {
 288         struct sdw_slave_prop *prop = &slave->prop;
 289         int nval, i;
 290         u32 bit;
 291         unsigned long addr;
 292         struct sdw_dpn_prop *dpn;
 293
 294         prop->scp_int1_mask = SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY;
 295
 296         /* BITMAP: 00001000  Dataport 3 is active */
 297         prop->source_ports = BIT(3);
 298         /* BITMAP: 00000010  Dataport 1 is active */
 299         prop->sink_ports = BIT(1);
 300         prop->paging_support = true;
 301         prop->clk_stop_timeout = 20;
 302
 303         nval = hweight32(prop->source_ports);
 304         prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,
 305                                           sizeof(*prop->src_dpn_prop),
 306                                           GFP_KERNEL);
 307         if (!prop->src_dpn_prop)
 308                 return -ENOMEM;
 309
 310         i = 0;
 311         dpn = prop->src_dpn_prop;
 312         addr = prop->source_ports;
 313         for_each_set_bit(bit, &addr, 32) {
 314                 dpn[i].num = bit;
 315                 dpn[i].type = SDW_DPN_FULL;
 316                 dpn[i].simple_ch_prep_sm = true;
 317                 dpn[i].ch_prep_timeout = 10;
 318                 i++;
 319         }
 320
 321         /* do this again for sink now */
 322         nval = hweight32(prop->sink_ports);
 323         prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
 324                                            sizeof(*prop->sink_dpn_prop),
 325                                            GFP_KERNEL);
 326         if (!prop->sink_dpn_prop)
 327                 return -ENOMEM;
 328
 329         i = 0;
 330         dpn = prop->sink_dpn_prop;
 331         addr = prop->sink_ports;
 332         for_each_set_bit(bit, &addr, 32) {
 333                 dpn[i].num = bit;
 334                 dpn[i].type = SDW_DPN_FULL;
 335                 dpn[i].simple_ch_prep_sm = true;
 336                 dpn[i].ch_prep_timeout = 10;
 337                 i++;
 338         }
 339
 340         /* set the timeout values */
 341         prop->clk_stop_timeout = 20;
 342
 343         return 0;
 344 }
 345
 346 static int max98373_io_init(struct sdw_slave *slave)
 347 {
 348         struct device *dev = &slave->dev;
 349         struct max98373_priv *max98373 = dev_get_drvdata(dev);
 350
 351         if (max98373->pm_init_once) {
 352                 regcache_cache_only(max98373->regmap, false);
 353                 regcache_cache_bypass(max98373->regmap, true);
 354         }
 355
 356         /*
 357          * PM runtime is only enabled when a Slave reports as Attached
 358          */
 359         if (!max98373->pm_init_once) {
 360                 /* set autosuspend parameters */
 361                 pm_runtime_set_autosuspend_delay(dev, 3000);
 362                 pm_runtime_use_autosuspend(dev);
 363
 364                 /* update count of parent 'active' children */
 365                 pm_runtime_set_active(dev);
 366
 367                 /* make sure the device does not suspend immediately */
 368                 pm_runtime_mark_last_busy(dev);
 369
 370                 pm_runtime_enable(dev);
 371         }
 372
 373         pm_runtime_get_noresume(dev);
 374
 375         /* Software Reset */
 376         max98373_reset(max98373, dev);
 377
 378         /* Set soundwire mode */
 379         regmap_write(max98373->regmap, MAX98373_R2025_AUDIO_IF_MODE, 3);
 380         /* Enable ADC */
 381         regmap_write(max98373->regmap, MAX98373_R2047_IV_SENSE_ADC_EN, 3);
 382         /* Set default Soundwire clock */
 383         regmap_write(max98373->regmap, MAX98373_R2036_SOUNDWIRE_CTRL, 5);
 384         /* Set default sampling rate for speaker and IVDAC */
 385         regmap_write(max98373->regmap, MAX98373_R2028_PCM_SR_SETUP_2, 0x88);
 386         /* IV default slot configuration */
 387         regmap_write(max98373->regmap,
 388                      MAX98373_R2020_PCM_TX_HIZ_EN_1,
 389                      0xFF);
 390         regmap_write(max98373->regmap,
 391                      MAX98373_R2021_PCM_TX_HIZ_EN_2,
 392                      0xFF);
 393         /* L/R mix configuration */
 394         regmap_write(max98373->regmap,
 395                      MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1,
 396                      0x80);
 397         regmap_write(max98373->regmap,
 398                      MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2,
 399                      0x1);
 400         /* Enable DC blocker */
 401         regmap_write(max98373->regmap,
 402                      MAX98373_R203F_AMP_DSP_CFG,
 403                      0x3);
 404         /* Enable IMON VMON DC blocker */
 405         regmap_write(max98373->regmap,
 406                      MAX98373_R2046_IV_SENSE_ADC_DSP_CFG,
 407                      0x7);
 408         /* voltage, current slot configuration */
 409         regmap_write(max98373->regmap,
 410                      MAX98373_R2022_PCM_TX_SRC_1,
 411                      (max98373->i_slot << MAX98373_PCM_TX_CH_SRC_A_I_SHIFT |
 412                      max98373->v_slot) & 0xFF);
 413         if (max98373->v_slot < 8)
 414                 regmap_update_bits(max98373->regmap,
 415                                    MAX98373_R2020_PCM_TX_HIZ_EN_1,
 416                                    1 << max98373->v_slot, 0);
 417         else
 418                 regmap_update_bits(max98373->regmap,
 419                                    MAX98373_R2021_PCM_TX_HIZ_EN_2,
 420                                    1 << (max98373->v_slot - 8), 0);
 421
 422         if (max98373->i_slot < 8)
 423                 regmap_update_bits(max98373->regmap,
 424                                    MAX98373_R2020_PCM_TX_HIZ_EN_1,
 425                                    1 << max98373->i_slot, 0);
 426         else
 427                 regmap_update_bits(max98373->regmap,
 428                                    MAX98373_R2021_PCM_TX_HIZ_EN_2,
 429                                    1 << (max98373->i_slot - 8), 0);
 430
 431         /* speaker feedback slot configuration */
 432         regmap_write(max98373->regmap,
 433                      MAX98373_R2023_PCM_TX_SRC_2,
 434                      max98373->spkfb_slot & 0xFF);
 435
 436         /* Set interleave mode */
 437         if (max98373->interleave_mode)
 438                 regmap_update_bits(max98373->regmap,
 439                                    MAX98373_R2024_PCM_DATA_FMT_CFG,
 440                                    MAX98373_PCM_TX_CH_INTERLEAVE_MASK,
 441                                    MAX98373_PCM_TX_CH_INTERLEAVE_MASK);
 442
 443         /* Speaker enable */
 444         regmap_update_bits(max98373->regmap,
 445                            MAX98373_R2043_AMP_EN,
 446                            MAX98373_SPK_EN_MASK, 1);
 447
 448         regmap_write(max98373->regmap, MAX98373_R20B5_BDE_EN, 1);
 449         regmap_write(max98373->regmap, MAX98373_R20E2_LIMITER_EN, 1);
 450
 451         if (max98373->pm_init_once) {
 452                 regcache_cache_bypass(max98373->regmap, false);
 453                 regcache_mark_dirty(max98373->regmap);
 454         }
 455
 456         max98373->pm_init_once = true;
 457         max98373->hw_init = true;
 458
 459         pm_runtime_mark_last_busy(dev);
 460         pm_runtime_put_autosuspend(dev);
 461
 462         return 0;
 463 }
 464
 465 static int max98373_clock_calculate(struct sdw_slave *slave,
 466                                     unsigned int clk_freq)
 467 {
 468         int x, y;
 469         static const int max98373_clk_family[] = {
 470                 7680000, 8400000, 9600000, 11289600,
 471                 12000000, 12288000, 13000000
 472         };
 473
 474         for (x = 0; x < 4; x++)
 475                 for (y = 0; y < ARRAY_SIZE(max98373_clk_family); y++)
 476                         if (clk_freq == (max98373_clk_family[y] >> x))
 477                                 return (x << 3) + y;
 478
 479         /* Set default clock (12.288 Mhz) if the value is not in the list */
 480         dev_err(&slave->dev, "Requested clock not found. (clk_freq = %d)\n",
 481                 clk_freq);
 482         return 0x5;
 483 }
 484
 485 static int max98373_clock_config(struct sdw_slave *slave,
 486                                  struct sdw_bus_params *params)
 487 {
 488         struct device *dev = &slave->dev;
 489         struct max98373_priv *max98373 = dev_get_drvdata(dev);
 490         unsigned int clk_freq, value;
 491
 492         clk_freq = (params->curr_dr_freq >> 1);
 493
 494         /*
 495          *      Select the proper value for the register based on the
 496          *      requested clock. If the value is not in the list,
 497          *      use reasonable default - 12.288 Mhz
 498          */
 499         value = max98373_clock_calculate(slave, clk_freq);
 500
 501         /* SWCLK */
 502         regmap_write(max98373->regmap, MAX98373_R2036_SOUNDWIRE_CTRL, value);
 503
 504         /* The default Sampling Rate value for IV is 48KHz*/
 505         regmap_write(max98373->regmap, MAX98373_R2028_PCM_SR_SETUP_2, 0x88);
 506
 507         return 0;
 508 }
 509
 510 #define MAX98373_RATES SNDRV_PCM_RATE_8000_96000
 511 #define MAX98373_FORMATS (SNDRV_PCM_FMTBIT_S32_LE)
 512
 513 static int max98373_sdw_dai_hw_params(struct snd_pcm_substream *substream,
 514                                       struct snd_pcm_hw_params *params,
 515                                       struct snd_soc_dai *dai)
 516 {
 517         struct snd_soc_component *component = dai->component;
 518         struct max98373_priv *max98373 =
 519                 snd_soc_component_get_drvdata(component);
 520
 521         struct sdw_stream_config stream_config;
 522         struct sdw_port_config port_config;
 523         enum sdw_data_direction direction;
 524         struct sdw_stream_data *stream;
 525         int ret, chan_sz, sampling_rate;
 526
 527         stream = snd_soc_dai_get_dma_data(dai, substream);
 528
 529         if (!stream)
 530                 return -EINVAL;
 531
 532         if (!max98373->slave)
 533                 return -EINVAL;
 534
 535         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 536                 direction = SDW_DATA_DIR_RX;
 537                 port_config.num = 1;
 538         } else {
 539                 direction = SDW_DATA_DIR_TX;
 540                 port_config.num = 3;
 541         }
 542
 543         stream_config.frame_rate = params_rate(params);
 544         stream_config.bps = snd_pcm_format_width(params_format(params));
 545         stream_config.direction = direction;
 546
 547         if (max98373->slot && direction == SDW_DATA_DIR_RX) {
 548                 stream_config.ch_count = max98373->slot;
 549                 port_config.ch_mask = max98373->rx_mask;
 550         } else {
 551                 /* only IV are supported by capture */
 552                 if (direction == SDW_DATA_DIR_TX)
 553                         stream_config.ch_count = 2;
 554                 else
 555                         stream_config.ch_count = params_channels(params);
 556
 557                 port_config.ch_mask = GENMASK((int)stream_config.ch_count - 1, 0);
 558         }
 559
 560         ret = sdw_stream_add_slave(max98373->slave, &stream_config,
 561                                    &port_config, 1, stream->sdw_stream);
 562         if (ret) {
 563                 dev_err(dai->dev, "Unable to configure port\n");
 564                 return ret;
 565         }
 566
 567         if (params_channels(params) > 16) {
 568                 dev_err(component->dev, "Unsupported channels %d\n",
 569                         params_channels(params));
 570                 return -EINVAL;
 571         }
 572
 573         /* Channel size configuration */
 574         switch (snd_pcm_format_width(params_format(params))) {
 575         case 16:
 576                 chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_16;
 577                 break;
 578         case 24:
 579                 chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_24;
 580                 break;
 581         case 32:
 582                 chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_32;
 583                 break;
 584         default:
 585                 dev_err(component->dev, "Channel size unsupported %d\n",
 586                         params_format(params));
 587                 return -EINVAL;
 588         }
 589
 590         max98373->ch_size = snd_pcm_format_width(params_format(params));
 591
 592         regmap_update_bits(max98373->regmap,
 593                            MAX98373_R2024_PCM_DATA_FMT_CFG,
 594                            MAX98373_PCM_MODE_CFG_CHANSZ_MASK, chan_sz);
 595
 596         dev_dbg(component->dev, "Format supported %d", params_format(params));
 597
 598         /* Sampling rate configuration */
 599         switch (params_rate(params)) {
 600         case 8000:
 601                 sampling_rate = MAX98373_PCM_SR_SET1_SR_8000;
 602                 break;
 603         case 11025:
 604                 sampling_rate = MAX98373_PCM_SR_SET1_SR_11025;
 605                 break;
 606         case 12000:
 607                 sampling_rate = MAX98373_PCM_SR_SET1_SR_12000;
 608                 break;
 609         case 16000:
 610                 sampling_rate = MAX98373_PCM_SR_SET1_SR_16000;
 611                 break;
 612         case 22050:
 613                 sampling_rate = MAX98373_PCM_SR_SET1_SR_22050;
 614                 break;
 615         case 24000:
 616                 sampling_rate = MAX98373_PCM_SR_SET1_SR_24000;
 617                 break;
 618         case 32000:
 619                 sampling_rate = MAX98373_PCM_SR_SET1_SR_32000;
 620                 break;
 621         case 44100:
 622                 sampling_rate = MAX98373_PCM_SR_SET1_SR_44100;
 623                 break;
 624         case 48000:
 625                 sampling_rate = MAX98373_PCM_SR_SET1_SR_48000;
 626                 break;
 627         case 88200:
 628                 sampling_rate = MAX98373_PCM_SR_SET1_SR_88200;
 629                 break;
 630         case 96000:
 631                 sampling_rate = MAX98373_PCM_SR_SET1_SR_96000;
 632                 break;
 633         default:
 634                 dev_err(component->dev, "Rate %d is not supported\n",
 635                         params_rate(params));
 636                 return -EINVAL;
 637         }
 638
 639         /* set correct sampling frequency */
 640         regmap_update_bits(max98373->regmap,
 641                            MAX98373_R2028_PCM_SR_SETUP_2,
 642                            MAX98373_PCM_SR_SET2_SR_MASK,
 643                            sampling_rate << MAX98373_PCM_SR_SET2_SR_SHIFT);
 644
 645         /* set sampling rate of IV */
 646         regmap_update_bits(max98373->regmap,
 647                            MAX98373_R2028_PCM_SR_SETUP_2,
 648                            MAX98373_PCM_SR_SET2_IVADC_SR_MASK,
 649                            sampling_rate);
 650
 651         return 0;
 652 }
 653
 654 static int max98373_pcm_hw_free(struct snd_pcm_substream *substream,
 655                                 struct snd_soc_dai *dai)
 656 {
 657         struct snd_soc_component *component = dai->component;
 658         struct max98373_priv *max98373 =
 659                 snd_soc_component_get_drvdata(component);
 660         struct sdw_stream_data *stream =
 661                 snd_soc_dai_get_dma_data(dai, substream);
 662
 663         if (!max98373->slave)
 664                 return -EINVAL;
 665
 666         sdw_stream_remove_slave(max98373->slave, stream->sdw_stream);
 667         return 0;
 668 }
 669
 670 static int max98373_set_sdw_stream(struct snd_soc_dai *dai,
 671                                    void *sdw_stream, int direction)
 672 {
 673         struct sdw_stream_data *stream;
 674
 675         if (!sdw_stream)
 676                 return 0;
 677
 678         stream = kzalloc(sizeof(*stream), GFP_KERNEL);
 679         if (!stream)
 680                 return -ENOMEM;
 681
 682         stream->sdw_stream = sdw_stream;
 683
 684         /* Use tx_mask or rx_mask to configure stream tag and set dma_data */
 685         if (direction == SNDRV_PCM_STREAM_PLAYBACK)
 686                 dai->playback_dma_data = stream;
 687         else
 688                 dai->capture_dma_data = stream;
 689
 690         return 0;
 691 }
 692
 693 static void max98373_shutdown(struct snd_pcm_substream *substream,
 694                               struct snd_soc_dai *dai)
 695 {
 696         struct sdw_stream_data *stream;
 697
 698         stream = snd_soc_dai_get_dma_data(dai, substream);
 699         snd_soc_dai_set_dma_data(dai, substream, NULL);
 700         kfree(stream);
 701 }
 702
 703 static int max98373_sdw_set_tdm_slot(struct snd_soc_dai *dai,
 704                                      unsigned int tx_mask,
 705                                      unsigned int rx_mask,
 706                                      int slots, int slot_width)
 707 {
 708         struct snd_soc_component *component = dai->component;
 709         struct max98373_priv *max98373 =
 710                 snd_soc_component_get_drvdata(component);
 711
 712         /* tx_mask is unused since it's irrelevant for I/V feedback */
 713         if (tx_mask)
 714                 return -EINVAL;
 715
 716         if (!rx_mask && !slots && !slot_width)
 717                 max98373->tdm_mode = false;
 718         else
 719                 max98373->tdm_mode = true;
 720
 721         max98373->rx_mask = rx_mask;
 722         max98373->slot = slots;
 723
 724         return 0;
 725 }
 726
 727 static const struct snd_soc_dai_ops max98373_dai_sdw_ops = {
 728         .hw_params = max98373_sdw_dai_hw_params,
 729         .hw_free = max98373_pcm_hw_free,
 730         .set_sdw_stream = max98373_set_sdw_stream,
 731         .shutdown = max98373_shutdown,
 732         .set_tdm_slot = max98373_sdw_set_tdm_slot,
 733 };
 734
 735 static struct snd_soc_dai_driver max98373_sdw_dai[] = {
 736         {
 737                 .name = "max98373-aif1",
 738                 .playback = {
 739                         .stream_name = "HiFi Playback",
 740                         .channels_min = 1,
 741                         .channels_max = 2,
 742                         .rates = MAX98373_RATES,
 743                         .formats = MAX98373_FORMATS,
 744                 },
 745                 .capture = {
 746                         .stream_name = "HiFi Capture",
 747                         .channels_min = 1,
 748                         .channels_max = 2,
 749                         .rates = MAX98373_RATES,
 750                         .formats = MAX98373_FORMATS,
 751                 },
 752                 .ops = &max98373_dai_sdw_ops,
 753         }
 754 };
 755
 756 static int max98373_init(struct sdw_slave *slave, struct regmap *regmap)
 757 {
 758         struct max98373_priv *max98373;
 759         int ret;
 760         struct device *dev = &slave->dev;
 761
 762         /*  Allocate and assign private driver data structure  */
 763         max98373 = devm_kzalloc(dev, sizeof(*max98373), GFP_KERNEL);
 764         if (!max98373)
 765                 return -ENOMEM;
 766
 767         dev_set_drvdata(dev, max98373);
 768         max98373->regmap = regmap;
 769         max98373->slave = slave;
 770
 771         /* Read voltage and slot configuration */
 772         max98373_slot_config(dev, max98373);
 773
 774         max98373->hw_init = false;
 775         max98373->pm_init_once = false;
 776
 777         /* codec registration  */
 778         ret = devm_snd_soc_register_component(dev, &soc_codec_dev_max98373_sdw,
 779                                               max98373_sdw_dai,
 780                                               ARRAY_SIZE(max98373_sdw_dai));
 781         if (ret < 0)
 782                 dev_err(dev, "Failed to register codec: %d\n", ret);
 783
 784         return ret;
 785 }
 786
 787 static int max98373_update_status(struct sdw_slave *slave,
 788                                   enum sdw_slave_status status)
 789 {
 790         struct max98373_priv *max98373 = dev_get_drvdata(&slave->dev);
 791
 792         if (status == SDW_SLAVE_UNATTACHED)
 793                 max98373->hw_init = false;
 794
 795         /*
 796          * Perform initialization only if slave status is SDW_SLAVE_ATTACHED
 797          */
 798         if (max98373->hw_init || status != SDW_SLAVE_ATTACHED)
 799                 return 0;
 800
 801         /* perform I/O transfers required for Slave initialization */
 802         return max98373_io_init(slave);
 803 }
 804
 805 static int max98373_bus_config(struct sdw_slave *slave,
 806                                struct sdw_bus_params *params)
 807 {
 808         int ret;
 809
 810         ret = max98373_clock_config(slave, params);
 811         if (ret < 0)
 812                 dev_err(&slave->dev, "Invalid clk config");
 813
 814         return ret;
 815 }
 816
 817 /*
 818  * slave_ops: callbacks for get_clock_stop_mode, clock_stop and
 819  * port_prep are not defined for now
 820  */
 821 static struct sdw_slave_ops max98373_slave_ops = {
 822         .read_prop = max98373_read_prop,
 823         .update_status = max98373_update_status,
 824         .bus_config = max98373_bus_config,
 825 };
 826
 827 static int max98373_sdw_probe(struct sdw_slave *slave,
 828                               const struct sdw_device_id *id)
 829 {
 830         struct regmap *regmap;
 831
 832         /* Regmap Initialization */
 833         regmap = devm_regmap_init_sdw(slave, &max98373_sdw_regmap);
 834         if (IS_ERR(regmap))
 835                 return PTR_ERR(regmap);
 836
 837         return max98373_init(slave, regmap);
 838 }
 839
 840 #if defined(CONFIG_OF)
 841 static const struct of_device_id max98373_of_match[] = {
 842         { .compatible = "maxim,max98373", },
 843         {},
 844 };
 845 MODULE_DEVICE_TABLE(of, max98373_of_match);
 846 #endif
 847
 848 #ifdef CONFIG_ACPI
 849 static const struct acpi_device_id max98373_acpi_match[] = {
 850         { "MX98373", 0 },
 851         {},
 852 };
 853 MODULE_DEVICE_TABLE(acpi, max98373_acpi_match);
 854 #endif
 855
 856 static const struct sdw_device_id max98373_id[] = {
 857         SDW_SLAVE_ENTRY(0x019F, 0x8373, 0),
 858         {},
 859 };
 860 MODULE_DEVICE_TABLE(sdw, max98373_id);
 861
 862 static struct sdw_driver max98373_sdw_driver = {
 863         .driver = {
 864                 .name = "max98373",
 865                 .owner = THIS_MODULE,
 866                 .of_match_table = of_match_ptr(max98373_of_match),
 867                 .acpi_match_table = ACPI_PTR(max98373_acpi_match),
 868                 .pm = &max98373_pm,
 869         },
 870         .probe = max98373_sdw_probe,
 871         .remove = NULL,
 872         .ops = &max98373_slave_ops,
 873         .id_table = max98373_id,
 874 };
 875
 876 module_sdw_driver(max98373_sdw_driver);
 877
 878 MODULE_DESCRIPTION("ASoC MAX98373 driver SDW");
 879 MODULE_AUTHOR("Oleg Sherbakov <oleg.sherbakov@maximintegrated.com>");
 880 MODULE_LICENSE("GPL v2");