sound/soc/tegra/tegra210_mixer.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 //
   3 // tegra210_mixer.c - Tegra210 MIXER driver
   4 //
   5 // Copyright (c) 2021 NVIDIA CORPORATION.  All rights reserved.
   6
   7 #include <linux/clk.h>
   8 #include <linux/device.h>
   9 #include <linux/io.h>
  10 #include <linux/module.h>
  11 #include <linux/of.h>
  12 #include <linux/of_device.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/pm_runtime.h>
  15 #include <linux/regmap.h>
  16 #include <sound/core.h>
  17 #include <sound/pcm.h>
  18 #include <sound/pcm_params.h>
  19 #include <sound/soc.h>
  20
  21 #include "tegra210_mixer.h"
  22 #include "tegra_cif.h"
  23
  24 #define MIXER_REG(reg, id)      ((reg) + ((id) * TEGRA210_MIXER_REG_STRIDE))
  25 #define MIXER_REG_BASE(reg)     ((reg) % TEGRA210_MIXER_REG_STRIDE)
  26
  27 #define MIXER_GAIN_CFG_RAM_ADDR(id)                                     \
  28         (TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_0 +                           \
  29          ((id) * TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_STRIDE))
  30
  31 #define MIXER_RX_REG_DEFAULTS(id)                                       \
  32         { MIXER_REG(TEGRA210_MIXER_RX1_CIF_CTRL, id), 0x00007700},      \
  33         { MIXER_REG(TEGRA210_MIXER_RX1_CTRL, id), 0x00010823},  \
  34         { MIXER_REG(TEGRA210_MIXER_RX1_PEAK_CTRL, id), 0x000012c0}
  35
  36 #define MIXER_TX_REG_DEFAULTS(id)                                       \
  37         { MIXER_REG(TEGRA210_MIXER_TX1_INT_MASK, (id)), 0x00000001},    \
  38         { MIXER_REG(TEGRA210_MIXER_TX1_CIF_CTRL, (id)), 0x00007700}
  39
  40 #define REG_DURATION_PARAM(reg, i) ((reg) + NUM_GAIN_POLY_COEFFS + 1 + (i))
  41
  42 static const struct reg_default tegra210_mixer_reg_defaults[] = {
  43         /* Inputs */
  44         MIXER_RX_REG_DEFAULTS(0),
  45         MIXER_RX_REG_DEFAULTS(1),
  46         MIXER_RX_REG_DEFAULTS(2),
  47         MIXER_RX_REG_DEFAULTS(3),
  48         MIXER_RX_REG_DEFAULTS(4),
  49         MIXER_RX_REG_DEFAULTS(5),
  50         MIXER_RX_REG_DEFAULTS(6),
  51         MIXER_RX_REG_DEFAULTS(7),
  52         MIXER_RX_REG_DEFAULTS(8),
  53         MIXER_RX_REG_DEFAULTS(9),
  54         /* Outputs */
  55         MIXER_TX_REG_DEFAULTS(0),
  56         MIXER_TX_REG_DEFAULTS(1),
  57         MIXER_TX_REG_DEFAULTS(2),
  58         MIXER_TX_REG_DEFAULTS(3),
  59         MIXER_TX_REG_DEFAULTS(4),
  60
  61         { TEGRA210_MIXER_CG, 0x00000001},
  62         { TEGRA210_MIXER_GAIN_CFG_RAM_CTRL, 0x00004000},
  63         { TEGRA210_MIXER_PEAKM_RAM_CTRL, 0x00004000},
  64         { TEGRA210_MIXER_ENABLE, 0x1 },
  65 };
  66
  67 /* Default gain parameters */
  68 static const struct tegra210_mixer_gain_params gain_params = {
  69         /* Polynomial coefficients */
  70         { 0, 0, 0, 0, 0, 0, 0, 0x1000000, 0 },
  71         /* Gain value */
  72         0x10000,
  73         /* Duration Parameters */
  74         { 0, 0, 0x400, 0x8000000 },
  75 };
  76
  77 static int __maybe_unused tegra210_mixer_runtime_suspend(struct device *dev)
  78 {
  79         struct tegra210_mixer *mixer = dev_get_drvdata(dev);
  80
  81         regcache_cache_only(mixer->regmap, true);
  82         regcache_mark_dirty(mixer->regmap);
  83
  84         return 0;
  85 }
  86
  87 static int __maybe_unused tegra210_mixer_runtime_resume(struct device *dev)
  88 {
  89         struct tegra210_mixer *mixer = dev_get_drvdata(dev);
  90
  91         regcache_cache_only(mixer->regmap, false);
  92         regcache_sync(mixer->regmap);
  93
  94         return 0;
  95 }
  96
  97 static int tegra210_mixer_write_ram(struct tegra210_mixer *mixer,
  98                                     unsigned int addr,
  99                                     unsigned int coef)
 100 {
 101         unsigned int reg, val;
 102         int err;
 103
 104         /* Check if busy */
 105         err = regmap_read_poll_timeout(mixer->regmap,
 106                                        TEGRA210_MIXER_GAIN_CFG_RAM_CTRL,
 107                                        val, !(val & 0x80000000), 10, 10000);
 108         if (err < 0)
 109                 return err;
 110
 111         reg = (addr << TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_SHIFT) &
 112               TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_MASK;
 113         reg |= TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_INIT_EN;
 114         reg |= TEGRA210_MIXER_GAIN_CFG_RAM_RW_WRITE;
 115         reg |= TEGRA210_MIXER_GAIN_CFG_RAM_SEQ_ACCESS_EN;
 116
 117         regmap_write(mixer->regmap,
 118                      TEGRA210_MIXER_GAIN_CFG_RAM_CTRL,
 119                      reg);
 120         regmap_write(mixer->regmap,
 121                      TEGRA210_MIXER_GAIN_CFG_RAM_DATA,
 122                      coef);
 123
 124         return 0;
 125 }
 126
 127 static int tegra210_mixer_configure_gain(struct snd_soc_component *cmpnt,
 128                                          unsigned int id, bool instant_gain)
 129 {
 130         struct tegra210_mixer *mixer = snd_soc_component_get_drvdata(cmpnt);
 131         unsigned int reg = MIXER_GAIN_CFG_RAM_ADDR(id);
 132         int err, i;
 133
 134         pm_runtime_get_sync(cmpnt->dev);
 135
 136         /* Write default gain poly coefficients */
 137         for (i = 0; i < NUM_GAIN_POLY_COEFFS; i++) {
 138                 err = tegra210_mixer_write_ram(mixer, reg + i,
 139                                                gain_params.poly_coeff[i]);
 140
 141                 if (err < 0)
 142                         goto rpm_put;
 143         }
 144
 145         /* Write stored gain value */
 146         err = tegra210_mixer_write_ram(mixer, reg + NUM_GAIN_POLY_COEFFS,
 147                                        mixer->gain_value[id]);
 148         if (err < 0)
 149                 goto rpm_put;
 150
 151         /* Write duration parameters */
 152         for (i = 0; i < NUM_DURATION_PARMS; i++) {
 153                 int val;
 154
 155                 if (instant_gain)
 156                         val = 1;
 157                 else
 158                         val = gain_params.duration[i];
 159
 160                 err = tegra210_mixer_write_ram(mixer,
 161                                                REG_DURATION_PARAM(reg, i),
 162                                                val);
 163                 if (err < 0)
 164                         goto rpm_put;
 165         }
 166
 167         /* Trigger to apply gain configurations */
 168         err = tegra210_mixer_write_ram(mixer, reg + REG_CFG_DONE_TRIGGER,
 169                                        VAL_CFG_DONE_TRIGGER);
 170
 171 rpm_put:
 172         pm_runtime_put(cmpnt->dev);
 173
 174         return err;
 175 }
 176
 177 static int tegra210_mixer_get_gain(struct snd_kcontrol *kcontrol,
 178                                    struct snd_ctl_elem_value *ucontrol)
 179 {
 180         struct soc_mixer_control *mc =
 181                 (struct soc_mixer_control *)kcontrol->private_value;
 182         struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
 183         struct tegra210_mixer *mixer = snd_soc_component_get_drvdata(cmpnt);
 184         unsigned int reg = mc->reg;
 185         unsigned int i;
 186
 187         i = (reg - TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_0) /
 188             TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_STRIDE;
 189
 190         ucontrol->value.integer.value[0] = mixer->gain_value[i];
 191
 192         return 0;
 193 }
 194
 195 static int tegra210_mixer_apply_gain(struct snd_kcontrol *kcontrol,
 196                                      struct snd_ctl_elem_value *ucontrol,
 197                                      bool instant_gain)
 198 {
 199         struct soc_mixer_control *mc =
 200                 (struct soc_mixer_control *)kcontrol->private_value;
 201         struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
 202         struct tegra210_mixer *mixer = snd_soc_component_get_drvdata(cmpnt);
 203         unsigned int reg = mc->reg, id;
 204         int err;
 205
 206         /* Save gain value for specific MIXER input */
 207         id = (reg - TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_0) /
 208              TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_STRIDE;
 209
 210         if (mixer->gain_value[id] == ucontrol->value.integer.value[0])
 211                 return 0;
 212
 213         mixer->gain_value[id] = ucontrol->value.integer.value[0];
 214
 215         err = tegra210_mixer_configure_gain(cmpnt, id, instant_gain);
 216         if (err) {
 217                 dev_err(cmpnt->dev, "Failed to apply gain\n");
 218                 return err;
 219         }
 220
 221         return 1;
 222 }
 223
 224 static int tegra210_mixer_put_gain(struct snd_kcontrol *kcontrol,
 225                                    struct snd_ctl_elem_value *ucontrol)
 226 {
 227         return tegra210_mixer_apply_gain(kcontrol, ucontrol, false);
 228 }
 229
 230 static int tegra210_mixer_put_instant_gain(struct snd_kcontrol *kcontrol,
 231                                            struct snd_ctl_elem_value *ucontrol)
 232 {
 233         return tegra210_mixer_apply_gain(kcontrol, ucontrol, true);
 234 }
 235
 236 static int tegra210_mixer_set_audio_cif(struct tegra210_mixer *mixer,
 237                                         struct snd_pcm_hw_params *params,
 238                                         unsigned int reg,
 239                                         unsigned int id)
 240 {
 241         unsigned int channels, audio_bits;
 242         struct tegra_cif_conf cif_conf;
 243
 244         memset(&cif_conf, 0, sizeof(struct tegra_cif_conf));
 245
 246         channels = params_channels(params);
 247
 248         switch (params_format(params)) {
 249         case SNDRV_PCM_FORMAT_S16_LE:
 250                 audio_bits = TEGRA_ACIF_BITS_16;
 251                 break;
 252         case SNDRV_PCM_FORMAT_S32_LE:
 253                 audio_bits = TEGRA_ACIF_BITS_32;
 254                 break;
 255         default:
 256                 return -EINVAL;
 257         }
 258
 259         cif_conf.audio_ch = channels;
 260         cif_conf.client_ch = channels;
 261         cif_conf.audio_bits = audio_bits;
 262         cif_conf.client_bits = audio_bits;
 263
 264         tegra_set_cif(mixer->regmap,
 265                       reg + (id * TEGRA210_MIXER_REG_STRIDE),
 266                       &cif_conf);
 267
 268         return 0;
 269 }
 270
 271 static int tegra210_mixer_in_hw_params(struct snd_pcm_substream *substream,
 272                                        struct snd_pcm_hw_params *params,
 273                                        struct snd_soc_dai *dai)
 274 {
 275         struct tegra210_mixer *mixer = snd_soc_dai_get_drvdata(dai);
 276         int err;
 277
 278         err = tegra210_mixer_set_audio_cif(mixer, params,
 279                                            TEGRA210_MIXER_RX1_CIF_CTRL,
 280                                            dai->id);
 281         if (err < 0)
 282                 return err;
 283
 284         return tegra210_mixer_configure_gain(dai->component, dai->id, false);
 285 }
 286
 287 static int tegra210_mixer_out_hw_params(struct snd_pcm_substream *substream,
 288                                         struct snd_pcm_hw_params *params,
 289                                         struct snd_soc_dai *dai)
 290 {
 291         struct tegra210_mixer *mixer = snd_soc_dai_get_drvdata(dai);
 292
 293         return tegra210_mixer_set_audio_cif(mixer, params,
 294                                             TEGRA210_MIXER_TX1_CIF_CTRL,
 295                                             dai->id - TEGRA210_MIXER_RX_MAX);
 296 }
 297
 298 static const struct snd_soc_dai_ops tegra210_mixer_out_dai_ops = {
 299         .hw_params      = tegra210_mixer_out_hw_params,
 300 };
 301
 302 static const struct snd_soc_dai_ops tegra210_mixer_in_dai_ops = {
 303         .hw_params      = tegra210_mixer_in_hw_params,
 304 };
 305
 306 #define IN_DAI(id)                                              \
 307         {                                                       \
 308                 .name = "MIXER-RX-CIF"#id,                      \
 309                 .playback = {                                   \
 310                         .stream_name = "RX" #id "-CIF-Playback",\
 311                         .channels_min = 1,                      \
 312                         .channels_max = 8,                      \
 313                         .rates = SNDRV_PCM_RATE_8000_192000,    \
 314                         .formats = SNDRV_PCM_FMTBIT_S8 |        \
 315                                 SNDRV_PCM_FMTBIT_S16_LE |       \
 316                                 SNDRV_PCM_FMTBIT_S32_LE,        \
 317                 },                                              \
 318                 .capture = {                                    \
 319                         .stream_name = "RX" #id "-CIF-Capture", \
 320                         .channels_min = 1,                      \
 321                         .channels_max = 8,                      \
 322                         .rates = SNDRV_PCM_RATE_8000_192000,    \
 323                         .formats = SNDRV_PCM_FMTBIT_S8 |        \
 324                                 SNDRV_PCM_FMTBIT_S16_LE |       \
 325                                 SNDRV_PCM_FMTBIT_S32_LE,        \
 326                 },                                              \
 327                 .ops = &tegra210_mixer_in_dai_ops,              \
 328         }
 329
 330 #define OUT_DAI(id)                                             \
 331         {                                                       \
 332                 .name = "MIXER-TX-CIF" #id,                     \
 333                 .playback = {                                   \
 334                         .stream_name = "TX" #id "-CIF-Playback",\
 335                         .channels_min = 1,                      \
 336                         .channels_max = 8,                      \
 337                         .rates = SNDRV_PCM_RATE_8000_192000,    \
 338                         .formats = SNDRV_PCM_FMTBIT_S8 |        \
 339                                 SNDRV_PCM_FMTBIT_S16_LE |       \
 340                                 SNDRV_PCM_FMTBIT_S32_LE,        \
 341                 },                                              \
 342                 .capture = {                                    \
 343                         .stream_name = "TX" #id "-CIF-Capture", \
 344                         .channels_min = 1,                      \
 345                         .channels_max = 8,                      \
 346                         .rates = SNDRV_PCM_RATE_8000_192000,    \
 347                         .formats = SNDRV_PCM_FMTBIT_S8 |        \
 348                                 SNDRV_PCM_FMTBIT_S16_LE |       \
 349                                 SNDRV_PCM_FMTBIT_S32_LE,        \
 350                 },                                              \
 351                 .ops = &tegra210_mixer_out_dai_ops,             \
 352         }
 353
 354 static struct snd_soc_dai_driver tegra210_mixer_dais[] = {
 355         /* Mixer Input */
 356         IN_DAI(1),
 357         IN_DAI(2),
 358         IN_DAI(3),
 359         IN_DAI(4),
 360         IN_DAI(5),
 361         IN_DAI(6),
 362         IN_DAI(7),
 363         IN_DAI(8),
 364         IN_DAI(9),
 365         IN_DAI(10),
 366
 367         /* Mixer Output */
 368         OUT_DAI(1),
 369         OUT_DAI(2),
 370         OUT_DAI(3),
 371         OUT_DAI(4),
 372         OUT_DAI(5),
 373 };
 374
 375 #define ADDER_CTRL_DECL(name, reg)                      \
 376         static const struct snd_kcontrol_new name[] = { \
 377                 SOC_DAPM_SINGLE("RX1", reg, 0, 1, 0),   \
 378                 SOC_DAPM_SINGLE("RX2", reg, 1, 1, 0),   \
 379                 SOC_DAPM_SINGLE("RX3", reg, 2, 1, 0),   \
 380                 SOC_DAPM_SINGLE("RX4", reg, 3, 1, 0),   \
 381                 SOC_DAPM_SINGLE("RX5", reg, 4, 1, 0),   \
 382                 SOC_DAPM_SINGLE("RX6", reg, 5, 1, 0),   \
 383                 SOC_DAPM_SINGLE("RX7", reg, 6, 1, 0),   \
 384                 SOC_DAPM_SINGLE("RX8", reg, 7, 1, 0),   \
 385                 SOC_DAPM_SINGLE("RX9", reg, 8, 1, 0),   \
 386                 SOC_DAPM_SINGLE("RX10", reg, 9, 1, 0),  \
 387         }
 388
 389 ADDER_CTRL_DECL(adder1, TEGRA210_MIXER_TX1_ADDER_CONFIG);
 390 ADDER_CTRL_DECL(adder2, TEGRA210_MIXER_TX2_ADDER_CONFIG);
 391 ADDER_CTRL_DECL(adder3, TEGRA210_MIXER_TX3_ADDER_CONFIG);
 392 ADDER_CTRL_DECL(adder4, TEGRA210_MIXER_TX4_ADDER_CONFIG);
 393 ADDER_CTRL_DECL(adder5, TEGRA210_MIXER_TX5_ADDER_CONFIG);
 394
 395 #define GAIN_CTRL(id)   \
 396         SOC_SINGLE_EXT("RX" #id " Gain Volume",                 \
 397                        MIXER_GAIN_CFG_RAM_ADDR((id) - 1), 0,    \
 398                        0x20000, 0, tegra210_mixer_get_gain,     \
 399                        tegra210_mixer_put_gain),                \
 400         SOC_SINGLE_EXT("RX" #id " Instant Gain Volume",         \
 401                        MIXER_GAIN_CFG_RAM_ADDR((id) - 1), 0,    \
 402                        0x20000, 0, tegra210_mixer_get_gain,     \
 403                        tegra210_mixer_put_instant_gain),
 404
 405 /* Volume controls for all MIXER inputs */
 406 static const struct snd_kcontrol_new tegra210_mixer_gain_ctls[] = {
 407         GAIN_CTRL(1)
 408         GAIN_CTRL(2)
 409         GAIN_CTRL(3)
 410         GAIN_CTRL(4)
 411         GAIN_CTRL(5)
 412         GAIN_CTRL(6)
 413         GAIN_CTRL(7)
 414         GAIN_CTRL(8)
 415         GAIN_CTRL(9)
 416         GAIN_CTRL(10)
 417 };
 418
 419 static const struct snd_soc_dapm_widget tegra210_mixer_widgets[] = {
 420         SND_SOC_DAPM_AIF_IN("RX1", NULL, 0, SND_SOC_NOPM, 0, 0),
 421         SND_SOC_DAPM_AIF_IN("RX2", NULL, 0, SND_SOC_NOPM, 0, 0),
 422         SND_SOC_DAPM_AIF_IN("RX3", NULL, 0, SND_SOC_NOPM, 0, 0),
 423         SND_SOC_DAPM_AIF_IN("RX4", NULL, 0, SND_SOC_NOPM, 0, 0),
 424         SND_SOC_DAPM_AIF_IN("RX5", NULL, 0, SND_SOC_NOPM, 0, 0),
 425         SND_SOC_DAPM_AIF_IN("RX6", NULL, 0, SND_SOC_NOPM, 0, 0),
 426         SND_SOC_DAPM_AIF_IN("RX7", NULL, 0, SND_SOC_NOPM, 0, 0),
 427         SND_SOC_DAPM_AIF_IN("RX8", NULL, 0, SND_SOC_NOPM, 0, 0),
 428         SND_SOC_DAPM_AIF_IN("RX9", NULL, 0, SND_SOC_NOPM, 0, 0),
 429         SND_SOC_DAPM_AIF_IN("RX10", NULL, 0, SND_SOC_NOPM, 0, 0),
 430         SND_SOC_DAPM_AIF_OUT("TX1", NULL, 0, TEGRA210_MIXER_TX1_ENABLE, 0, 0),
 431         SND_SOC_DAPM_AIF_OUT("TX2", NULL, 0, TEGRA210_MIXER_TX2_ENABLE, 0, 0),
 432         SND_SOC_DAPM_AIF_OUT("TX3", NULL, 0, TEGRA210_MIXER_TX3_ENABLE, 0, 0),
 433         SND_SOC_DAPM_AIF_OUT("TX4", NULL, 0, TEGRA210_MIXER_TX4_ENABLE, 0, 0),
 434         SND_SOC_DAPM_AIF_OUT("TX5", NULL, 0, TEGRA210_MIXER_TX5_ENABLE, 0, 0),
 435         SND_SOC_DAPM_MIXER("Adder1", SND_SOC_NOPM, 1, 0, adder1,
 436                            ARRAY_SIZE(adder1)),
 437         SND_SOC_DAPM_MIXER("Adder2", SND_SOC_NOPM, 1, 0, adder2,
 438                            ARRAY_SIZE(adder2)),
 439         SND_SOC_DAPM_MIXER("Adder3", SND_SOC_NOPM, 1, 0, adder3,
 440                            ARRAY_SIZE(adder3)),
 441         SND_SOC_DAPM_MIXER("Adder4", SND_SOC_NOPM, 1, 0, adder4,
 442                            ARRAY_SIZE(adder4)),
 443         SND_SOC_DAPM_MIXER("Adder5", SND_SOC_NOPM, 1, 0, adder5,
 444                            ARRAY_SIZE(adder5)),
 445 };
 446
 447 #define RX_ROUTES(id, sname)                                               \
 448         { "RX" #id " XBAR-" sname,      NULL,   "RX" #id " XBAR-TX" },     \
 449         { "RX" #id "-CIF-" sname,       NULL,   "RX" #id " XBAR-" sname }, \
 450         { "RX" #id,                     NULL,   "RX" #id "-CIF-" sname }
 451
 452 #define MIXER_RX_ROUTES(id)             \
 453         RX_ROUTES(id, "Playback"),      \
 454         RX_ROUTES(id, "Capture")
 455
 456 #define ADDER_ROUTES(id, sname)                                           \
 457         { "Adder" #id,                  "RX1",  "RX1" },                  \
 458         { "Adder" #id,                  "RX2",  "RX2" },                  \
 459         { "Adder" #id,                  "RX3",  "RX3" },                  \
 460         { "Adder" #id,                  "RX4",  "RX4" },                  \
 461         { "Adder" #id,                  "RX5",  "RX5" },                  \
 462         { "Adder" #id,                  "RX6",  "RX6" },                  \
 463         { "Adder" #id,                  "RX7",  "RX7" },                  \
 464         { "Adder" #id,                  "RX8",  "RX8" },                  \
 465         { "Adder" #id,                  "RX9",  "RX9" },                  \
 466         { "Adder" #id,                  "RX10", "RX10" },                 \
 467         { "TX" #id,                     NULL,   "Adder" #id },            \
 468         { "TX" #id "-CIF-" sname,       NULL,   "TX" #id },               \
 469         { "TX" #id " XBAR-" sname,      NULL,   "TX" #id "-CIF-" sname }, \
 470         { "TX" #id " XBAR-RX",          NULL,   "TX" #id " XBAR-" sname } \
 471
 472 #define TX_ROUTES(id, sname)            \
 473         ADDER_ROUTES(1, sname),         \
 474         ADDER_ROUTES(2, sname),         \
 475         ADDER_ROUTES(3, sname),         \
 476         ADDER_ROUTES(4, sname),         \
 477         ADDER_ROUTES(5, sname)
 478
 479 #define MIXER_TX_ROUTES(id)             \
 480         TX_ROUTES(id, "Playback"),      \
 481         TX_ROUTES(id, "Capture")
 482
 483 static const struct snd_soc_dapm_route tegra210_mixer_routes[] = {
 484         /* Input */
 485         MIXER_RX_ROUTES(1),
 486         MIXER_RX_ROUTES(2),
 487         MIXER_RX_ROUTES(3),
 488         MIXER_RX_ROUTES(4),
 489         MIXER_RX_ROUTES(5),
 490         MIXER_RX_ROUTES(6),
 491         MIXER_RX_ROUTES(7),
 492         MIXER_RX_ROUTES(8),
 493         MIXER_RX_ROUTES(9),
 494         MIXER_RX_ROUTES(10),
 495         /* Output */
 496         MIXER_TX_ROUTES(1),
 497         MIXER_TX_ROUTES(2),
 498         MIXER_TX_ROUTES(3),
 499         MIXER_TX_ROUTES(4),
 500         MIXER_TX_ROUTES(5),
 501 };
 502
 503 static const struct snd_soc_component_driver tegra210_mixer_cmpnt = {
 504         .dapm_widgets           = tegra210_mixer_widgets,
 505         .num_dapm_widgets       = ARRAY_SIZE(tegra210_mixer_widgets),
 506         .dapm_routes            = tegra210_mixer_routes,
 507         .num_dapm_routes        = ARRAY_SIZE(tegra210_mixer_routes),
 508         .controls               = tegra210_mixer_gain_ctls,
 509         .num_controls           = ARRAY_SIZE(tegra210_mixer_gain_ctls),
 510 };
 511
 512 static bool tegra210_mixer_wr_reg(struct device *dev,
 513                                 unsigned int reg)
 514 {
 515         if (reg < TEGRA210_MIXER_RX_LIMIT)
 516                 reg = MIXER_REG_BASE(reg);
 517         else if (reg < TEGRA210_MIXER_TX_LIMIT)
 518                 reg = MIXER_REG_BASE(reg) + TEGRA210_MIXER_TX1_ENABLE;
 519
 520         switch (reg) {
 521         case TEGRA210_MIXER_RX1_SOFT_RESET:
 522         case TEGRA210_MIXER_RX1_CIF_CTRL ... TEGRA210_MIXER_RX1_PEAK_CTRL:
 523
 524         case TEGRA210_MIXER_TX1_ENABLE:
 525         case TEGRA210_MIXER_TX1_SOFT_RESET:
 526         case TEGRA210_MIXER_TX1_INT_MASK ... TEGRA210_MIXER_TX1_ADDER_CONFIG:
 527
 528         case TEGRA210_MIXER_ENABLE ... TEGRA210_MIXER_CG:
 529         case TEGRA210_MIXER_GAIN_CFG_RAM_CTRL ... TEGRA210_MIXER_CTRL:
 530                 return true;
 531         default:
 532                 return false;
 533         }
 534 }
 535
 536 static bool tegra210_mixer_rd_reg(struct device *dev,
 537                                 unsigned int reg)
 538 {
 539         if (reg < TEGRA210_MIXER_RX_LIMIT)
 540                 reg = MIXER_REG_BASE(reg);
 541         else if (reg < TEGRA210_MIXER_TX_LIMIT)
 542                 reg = MIXER_REG_BASE(reg) + TEGRA210_MIXER_TX1_ENABLE;
 543
 544         switch (reg) {
 545         case TEGRA210_MIXER_RX1_SOFT_RESET ... TEGRA210_MIXER_RX1_SAMPLE_COUNT:
 546         case TEGRA210_MIXER_TX1_ENABLE ... TEGRA210_MIXER_TX1_ADDER_CONFIG:
 547         case TEGRA210_MIXER_ENABLE ... TEGRA210_MIXER_CTRL:
 548                 return true;
 549         default:
 550                 return false;
 551         }
 552 }
 553
 554 static bool tegra210_mixer_volatile_reg(struct device *dev,
 555                                 unsigned int reg)
 556 {
 557         if (reg < TEGRA210_MIXER_RX_LIMIT)
 558                 reg = MIXER_REG_BASE(reg);
 559         else if (reg < TEGRA210_MIXER_TX_LIMIT)
 560                 reg = MIXER_REG_BASE(reg) + TEGRA210_MIXER_TX1_ENABLE;
 561
 562         switch (reg) {
 563         case TEGRA210_MIXER_RX1_SOFT_RESET:
 564         case TEGRA210_MIXER_RX1_STATUS:
 565
 566         case TEGRA210_MIXER_TX1_SOFT_RESET:
 567         case TEGRA210_MIXER_TX1_STATUS:
 568         case TEGRA210_MIXER_TX1_INT_STATUS:
 569         case TEGRA210_MIXER_TX1_INT_SET:
 570
 571         case TEGRA210_MIXER_SOFT_RESET:
 572         case TEGRA210_MIXER_STATUS:
 573         case TEGRA210_MIXER_INT_STATUS:
 574         case TEGRA210_MIXER_GAIN_CFG_RAM_CTRL:
 575         case TEGRA210_MIXER_GAIN_CFG_RAM_DATA:
 576         case TEGRA210_MIXER_PEAKM_RAM_CTRL:
 577         case TEGRA210_MIXER_PEAKM_RAM_DATA:
 578                 return true;
 579         default:
 580                 return false;
 581         }
 582 }
 583
 584 static bool tegra210_mixer_precious_reg(struct device *dev,
 585                                 unsigned int reg)
 586 {
 587         switch (reg) {
 588         case TEGRA210_MIXER_GAIN_CFG_RAM_DATA:
 589         case TEGRA210_MIXER_PEAKM_RAM_DATA:
 590                 return true;
 591         default:
 592                 return false;
 593         }
 594 }
 595
 596 static const struct regmap_config tegra210_mixer_regmap_config = {
 597         .reg_bits               = 32,
 598         .reg_stride             = 4,
 599         .val_bits               = 32,
 600         .max_register           = TEGRA210_MIXER_CTRL,
 601         .writeable_reg          = tegra210_mixer_wr_reg,
 602         .readable_reg           = tegra210_mixer_rd_reg,
 603         .volatile_reg           = tegra210_mixer_volatile_reg,
 604         .precious_reg           = tegra210_mixer_precious_reg,
 605         .reg_defaults           = tegra210_mixer_reg_defaults,
 606         .num_reg_defaults       = ARRAY_SIZE(tegra210_mixer_reg_defaults),
 607         .cache_type             = REGCACHE_FLAT,
 608 };
 609
 610 static const struct of_device_id tegra210_mixer_of_match[] = {
 611         { .compatible = "nvidia,tegra210-amixer" },
 612         {},
 613 };
 614 MODULE_DEVICE_TABLE(of, tegra210_mixer_of_match);
 615
 616 static int tegra210_mixer_platform_probe(struct platform_device *pdev)
 617 {
 618         struct device *dev = &pdev->dev;
 619         struct tegra210_mixer *mixer;
 620         void __iomem *regs;
 621         int err, i;
 622
 623         mixer = devm_kzalloc(dev, sizeof(*mixer), GFP_KERNEL);
 624         if (!mixer)
 625                 return -ENOMEM;
 626
 627         dev_set_drvdata(dev, mixer);
 628
 629         /* Use default gain value for all MIXER inputs */
 630         for (i = 0; i < TEGRA210_MIXER_RX_MAX; i++)
 631                 mixer->gain_value[i] = gain_params.gain_value;
 632
 633         regs = devm_platform_ioremap_resource(pdev, 0);
 634         if (IS_ERR(regs))
 635                 return PTR_ERR(regs);
 636
 637         mixer->regmap = devm_regmap_init_mmio(dev, regs,
 638                                               &tegra210_mixer_regmap_config);
 639         if (IS_ERR(mixer->regmap)) {
 640                 dev_err(dev, "regmap init failed\n");
 641                 return PTR_ERR(mixer->regmap);
 642         }
 643
 644         regcache_cache_only(mixer->regmap, true);
 645
 646         err = devm_snd_soc_register_component(dev, &tegra210_mixer_cmpnt,
 647                                               tegra210_mixer_dais,
 648                                               ARRAY_SIZE(tegra210_mixer_dais));
 649         if (err) {
 650                 dev_err(dev, "can't register MIXER component, err: %d\n", err);
 651                 return err;
 652         }
 653
 654         pm_runtime_enable(dev);
 655
 656         return 0;
 657 }
 658
 659 static int tegra210_mixer_platform_remove(struct platform_device *pdev)
 660 {
 661         pm_runtime_disable(&pdev->dev);
 662
 663         return 0;
 664 }
 665
 666 static const struct dev_pm_ops tegra210_mixer_pm_ops = {
 667         SET_RUNTIME_PM_OPS(tegra210_mixer_runtime_suspend,
 668                            tegra210_mixer_runtime_resume, NULL)
 669         SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
 670                                 pm_runtime_force_resume)
 671 };
 672
 673 static struct platform_driver tegra210_mixer_driver = {
 674         .driver = {
 675                 .name = "tegra210_mixer",
 676                 .of_match_table = tegra210_mixer_of_match,
 677                 .pm = &tegra210_mixer_pm_ops,
 678         },
 679         .probe = tegra210_mixer_platform_probe,
 680         .remove = tegra210_mixer_platform_remove,
 681 };
 682 module_platform_driver(tegra210_mixer_driver);
 683
 684 MODULE_AUTHOR("Arun Shamanna Lakshmi <aruns@nvidia.com>");
 685 MODULE_DESCRIPTION("Tegra210 MIXER ASoC driver");
 686 MODULE_LICENSE("GPL v2");