sound/soc/sh/rcar/ctu.c

   1 /*
   2  * ctu.c
   3  *
   4  * Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10 #include "rsnd.h"
  11
  12 #define CTU_NAME_SIZE   16
  13 #define CTU_NAME "ctu"
  14
  15 /*
  16  * User needs to setup CTU by amixer, and its settings are
  17  * based on below registers
  18  *
  19  * CTUn_CPMDR : amixser set "CTU Pass"
  20  * CTUn_SV0xR : amixser set "CTU SV0"
  21  * CTUn_SV1xR : amixser set "CTU SV1"
  22  * CTUn_SV2xR : amixser set "CTU SV2"
  23  * CTUn_SV3xR : amixser set "CTU SV3"
  24  *
  25  * [CTU Pass]
  26  * 0000: default
  27  * 0001: Connect input data of channel 0
  28  * 0010: Connect input data of channel 1
  29  * 0011: Connect input data of channel 2
  30  * 0100: Connect input data of channel 3
  31  * 0101: Connect input data of channel 4
  32  * 0110: Connect input data of channel 5
  33  * 0111: Connect input data of channel 6
  34  * 1000: Connect input data of channel 7
  35  * 1001: Connect calculated data by scale values of matrix row 0
  36  * 1010: Connect calculated data by scale values of matrix row 1
  37  * 1011: Connect calculated data by scale values of matrix row 2
  38  * 1100: Connect calculated data by scale values of matrix row 3
  39  *
  40  * [CTU SVx]
  41  * [Output0] = [SV00, SV01, SV02, SV03, SV04, SV05, SV06, SV07]
  42  * [Output1] = [SV10, SV11, SV12, SV13, SV14, SV15, SV16, SV17]
  43  * [Output2] = [SV20, SV21, SV22, SV23, SV24, SV25, SV26, SV27]
  44  * [Output3] = [SV30, SV31, SV32, SV33, SV34, SV35, SV36, SV37]
  45  * [Output4] = [ 0,   0,    0,    0,    0,    0,    0,    0   ]
  46  * [Output5] = [ 0,   0,    0,    0,    0,    0,    0,    0   ]
  47  * [Output6] = [ 0,   0,    0,    0,    0,    0,    0,    0   ]
  48  * [Output7] = [ 0,   0,    0,    0,    0,    0,    0,    0   ]
  49  *
  50  * [SVxx]
  51  * Plus                                 Minus
  52  * value        time            dB      value           time            dB
  53  * -----------------------------------------------------------------------
  54  * H'7F_FFFF    2               6       H'80_0000       2               6
  55  * ...
  56  * H'40_0000    1               0       H'C0_0000       1               0
  57  * ...
  58  * H'00_0001    2.38 x 10^-7    -132
  59  * H'00_0000    0               Mute    H'FF_FFFF       2.38 x 10^-7    -132
  60  *
  61  *
  62  * Ex) Input ch -> Output ch
  63  *      1ch     ->  0ch
  64  *      0ch     ->  1ch
  65  *
  66  *      amixer set "CTU Reset" on
  67  *      amixer set "CTU Pass" 9,10
  68  *      amixer set "CTU SV0" 0,4194304
  69  *      amixer set "CTU SV1" 4194304,0
  70  * or
  71  *      amixer set "CTU Reset" on
  72  *      amixer set "CTU Pass" 2,1
  73  */
  74
  75 struct rsnd_ctu {
  76         struct rsnd_mod mod;
  77         struct rsnd_kctrl_cfg_m pass;
  78         struct rsnd_kctrl_cfg_m sv0;
  79         struct rsnd_kctrl_cfg_m sv1;
  80         struct rsnd_kctrl_cfg_m sv2;
  81         struct rsnd_kctrl_cfg_m sv3;
  82         struct rsnd_kctrl_cfg_s reset;
  83         int channels;
  84 };
  85
  86 #define rsnd_ctu_nr(priv) ((priv)->ctu_nr)
  87 #define for_each_rsnd_ctu(pos, priv, i)                                 \
  88         for ((i) = 0;                                                   \
  89              ((i) < rsnd_ctu_nr(priv)) &&                               \
  90                      ((pos) = (struct rsnd_ctu *)(priv)->ctu + i);      \
  91              i++)
  92
  93 #define rsnd_mod_to_ctu(_mod)   \
  94         container_of((_mod), struct rsnd_ctu, mod)
  95
  96 #define rsnd_ctu_get(priv, id) ((struct rsnd_ctu *)(priv->ctu) + id)
  97
  98 static void rsnd_ctu_activation(struct rsnd_mod *mod)
  99 {
 100         rsnd_mod_write(mod, CTU_SWRSR, 0);
 101         rsnd_mod_write(mod, CTU_SWRSR, 1);
 102 }
 103
 104 static void rsnd_ctu_halt(struct rsnd_mod *mod)
 105 {
 106         rsnd_mod_write(mod, CTU_CTUIR, 1);
 107         rsnd_mod_write(mod, CTU_SWRSR, 0);
 108 }
 109
 110 int rsnd_ctu_converted_channel(struct rsnd_mod *mod)
 111 {
 112         struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
 113
 114         return ctu->channels;
 115 }
 116
 117 static int rsnd_ctu_probe_(struct rsnd_mod *mod,
 118                            struct rsnd_dai_stream *io,
 119                            struct rsnd_priv *priv)
 120 {
 121         return rsnd_cmd_attach(io, rsnd_mod_id(mod) / 4);
 122 }
 123
 124 static void rsnd_ctu_value_init(struct rsnd_dai_stream *io,
 125                                struct rsnd_mod *mod)
 126 {
 127         struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
 128         u32 cpmdr = 0;
 129         u32 scmdr = 0;
 130         int i;
 131
 132         for (i = 0; i < RSND_MAX_CHANNELS; i++) {
 133                 u32 val = ctu->pass.val[i];
 134
 135                 cpmdr |= val << (28 - (i * 4));
 136
 137                 if ((val > 0x8) && (scmdr < (val - 0x8)))
 138                         scmdr = val - 0x8;
 139         }
 140
 141         rsnd_mod_write(mod, CTU_CTUIR, 1);
 142
 143         rsnd_mod_write(mod, CTU_ADINR, rsnd_runtime_channel_original(io));
 144
 145         rsnd_mod_write(mod, CTU_CPMDR, cpmdr);
 146
 147         rsnd_mod_write(mod, CTU_SCMDR, scmdr);
 148
 149         if (scmdr > 0) {
 150                 rsnd_mod_write(mod, CTU_SV00R, ctu->sv0.val[0]);
 151                 rsnd_mod_write(mod, CTU_SV01R, ctu->sv0.val[1]);
 152                 rsnd_mod_write(mod, CTU_SV02R, ctu->sv0.val[2]);
 153                 rsnd_mod_write(mod, CTU_SV03R, ctu->sv0.val[3]);
 154                 rsnd_mod_write(mod, CTU_SV04R, ctu->sv0.val[4]);
 155                 rsnd_mod_write(mod, CTU_SV05R, ctu->sv0.val[5]);
 156                 rsnd_mod_write(mod, CTU_SV06R, ctu->sv0.val[6]);
 157                 rsnd_mod_write(mod, CTU_SV07R, ctu->sv0.val[7]);
 158         }
 159         if (scmdr > 1) {
 160                 rsnd_mod_write(mod, CTU_SV10R, ctu->sv1.val[0]);
 161                 rsnd_mod_write(mod, CTU_SV11R, ctu->sv1.val[1]);
 162                 rsnd_mod_write(mod, CTU_SV12R, ctu->sv1.val[2]);
 163                 rsnd_mod_write(mod, CTU_SV13R, ctu->sv1.val[3]);
 164                 rsnd_mod_write(mod, CTU_SV14R, ctu->sv1.val[4]);
 165                 rsnd_mod_write(mod, CTU_SV15R, ctu->sv1.val[5]);
 166                 rsnd_mod_write(mod, CTU_SV16R, ctu->sv1.val[6]);
 167                 rsnd_mod_write(mod, CTU_SV17R, ctu->sv1.val[7]);
 168         }
 169         if (scmdr > 2) {
 170                 rsnd_mod_write(mod, CTU_SV20R, ctu->sv2.val[0]);
 171                 rsnd_mod_write(mod, CTU_SV21R, ctu->sv2.val[1]);
 172                 rsnd_mod_write(mod, CTU_SV22R, ctu->sv2.val[2]);
 173                 rsnd_mod_write(mod, CTU_SV23R, ctu->sv2.val[3]);
 174                 rsnd_mod_write(mod, CTU_SV24R, ctu->sv2.val[4]);
 175                 rsnd_mod_write(mod, CTU_SV25R, ctu->sv2.val[5]);
 176                 rsnd_mod_write(mod, CTU_SV26R, ctu->sv2.val[6]);
 177                 rsnd_mod_write(mod, CTU_SV27R, ctu->sv2.val[7]);
 178         }
 179         if (scmdr > 3) {
 180                 rsnd_mod_write(mod, CTU_SV30R, ctu->sv3.val[0]);
 181                 rsnd_mod_write(mod, CTU_SV31R, ctu->sv3.val[1]);
 182                 rsnd_mod_write(mod, CTU_SV32R, ctu->sv3.val[2]);
 183                 rsnd_mod_write(mod, CTU_SV33R, ctu->sv3.val[3]);
 184                 rsnd_mod_write(mod, CTU_SV34R, ctu->sv3.val[4]);
 185                 rsnd_mod_write(mod, CTU_SV35R, ctu->sv3.val[5]);
 186                 rsnd_mod_write(mod, CTU_SV36R, ctu->sv3.val[6]);
 187                 rsnd_mod_write(mod, CTU_SV37R, ctu->sv3.val[7]);
 188         }
 189
 190         rsnd_mod_write(mod, CTU_CTUIR, 0);
 191 }
 192
 193 static void rsnd_ctu_value_reset(struct rsnd_dai_stream *io,
 194                                  struct rsnd_mod *mod)
 195 {
 196         struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
 197         int i;
 198
 199         if (!ctu->reset.val)
 200                 return;
 201
 202         for (i = 0; i < RSND_MAX_CHANNELS; i++) {
 203                 ctu->pass.val[i] = 0;
 204                 ctu->sv0.val[i] = 0;
 205                 ctu->sv1.val[i] = 0;
 206                 ctu->sv2.val[i] = 0;
 207                 ctu->sv3.val[i] = 0;
 208         }
 209         ctu->reset.val = 0;
 210 }
 211
 212 static int rsnd_ctu_init(struct rsnd_mod *mod,
 213                          struct rsnd_dai_stream *io,
 214                          struct rsnd_priv *priv)
 215 {
 216         rsnd_mod_power_on(mod);
 217
 218         rsnd_ctu_activation(mod);
 219
 220         rsnd_ctu_value_init(io, mod);
 221
 222         return 0;
 223 }
 224
 225 static int rsnd_ctu_quit(struct rsnd_mod *mod,
 226                          struct rsnd_dai_stream *io,
 227                          struct rsnd_priv *priv)
 228 {
 229         rsnd_ctu_halt(mod);
 230
 231         rsnd_mod_power_off(mod);
 232
 233         return 0;
 234 }
 235
 236 static int rsnd_ctu_hw_params(struct rsnd_mod *mod,
 237                               struct rsnd_dai_stream *io,
 238                               struct snd_pcm_substream *substream,
 239                               struct snd_pcm_hw_params *fe_params)
 240 {
 241         struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
 242         struct snd_soc_pcm_runtime *fe = substream->private_data;
 243
 244         /*
 245          * CTU assumes that it is used under DPCM if user want to use
 246          * channel transfer. Then, CTU should be FE.
 247          * And then, this function will be called *after* BE settings.
 248          * this means, each BE already has fixuped hw_params.
 249          * see
 250          *      dpcm_fe_dai_hw_params()
 251          *      dpcm_be_dai_hw_params()
 252          */
 253         ctu->channels = 0;
 254         if (fe->dai_link->dynamic) {
 255                 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 256                 struct device *dev = rsnd_priv_to_dev(priv);
 257                 struct snd_soc_dpcm *dpcm;
 258                 struct snd_pcm_hw_params *be_params;
 259                 int stream = substream->stream;
 260
 261                 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
 262                         be_params = &dpcm->hw_params;
 263                         if (params_channels(fe_params) != params_channels(be_params))
 264                                 ctu->channels = params_channels(be_params);
 265                 }
 266
 267                 dev_dbg(dev, "CTU convert channels %d\n", ctu->channels);
 268         }
 269
 270         return 0;
 271 }
 272
 273 static int rsnd_ctu_pcm_new(struct rsnd_mod *mod,
 274                             struct rsnd_dai_stream *io,
 275                             struct snd_soc_pcm_runtime *rtd)
 276 {
 277         struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
 278         int ret;
 279
 280         /* CTU Pass */
 281         ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU Pass",
 282                                NULL,
 283                                &ctu->pass, RSND_MAX_CHANNELS,
 284                                0xC);
 285
 286         /* ROW0 */
 287         ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV0",
 288                                NULL,
 289                                &ctu->sv0, RSND_MAX_CHANNELS,
 290                                0x00FFFFFF);
 291         if (ret < 0)
 292                 return ret;
 293
 294         /* ROW1 */
 295         ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV1",
 296                                NULL,
 297                                &ctu->sv1, RSND_MAX_CHANNELS,
 298                                0x00FFFFFF);
 299         if (ret < 0)
 300                 return ret;
 301
 302         /* ROW2 */
 303         ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV2",
 304                                NULL,
 305                                &ctu->sv2, RSND_MAX_CHANNELS,
 306                                0x00FFFFFF);
 307         if (ret < 0)
 308                 return ret;
 309
 310         /* ROW3 */
 311         ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV3",
 312                                NULL,
 313                                &ctu->sv3, RSND_MAX_CHANNELS,
 314                                0x00FFFFFF);
 315         if (ret < 0)
 316                 return ret;
 317
 318         /* Reset */
 319         ret = rsnd_kctrl_new_s(mod, io, rtd, "CTU Reset",
 320                                rsnd_ctu_value_reset,
 321                                &ctu->reset, 1);
 322
 323         return ret;
 324 }
 325
 326 static struct rsnd_mod_ops rsnd_ctu_ops = {
 327         .name           = CTU_NAME,
 328         .probe          = rsnd_ctu_probe_,
 329         .init           = rsnd_ctu_init,
 330         .quit           = rsnd_ctu_quit,
 331         .hw_params      = rsnd_ctu_hw_params,
 332         .pcm_new        = rsnd_ctu_pcm_new,
 333 };
 334
 335 struct rsnd_mod *rsnd_ctu_mod_get(struct rsnd_priv *priv, int id)
 336 {
 337         if (WARN_ON(id < 0 || id >= rsnd_ctu_nr(priv)))
 338                 id = 0;
 339
 340         return rsnd_mod_get(rsnd_ctu_get(priv, id));
 341 }
 342
 343 int rsnd_ctu_probe(struct rsnd_priv *priv)
 344 {
 345         struct device_node *node;
 346         struct device_node *np;
 347         struct device *dev = rsnd_priv_to_dev(priv);
 348         struct rsnd_ctu *ctu;
 349         struct clk *clk;
 350         char name[CTU_NAME_SIZE];
 351         int i, nr, ret;
 352
 353         /* This driver doesn't support Gen1 at this point */
 354         if (rsnd_is_gen1(priv))
 355                 return 0;
 356
 357         node = rsnd_ctu_of_node(priv);
 358         if (!node)
 359                 return 0; /* not used is not error */
 360
 361         nr = of_get_child_count(node);
 362         if (!nr) {
 363                 ret = -EINVAL;
 364                 goto rsnd_ctu_probe_done;
 365         }
 366
 367         ctu = devm_kzalloc(dev, sizeof(*ctu) * nr, GFP_KERNEL);
 368         if (!ctu) {
 369                 ret = -ENOMEM;
 370                 goto rsnd_ctu_probe_done;
 371         }
 372
 373         priv->ctu_nr    = nr;
 374         priv->ctu       = ctu;
 375
 376         i = 0;
 377         ret = 0;
 378         for_each_child_of_node(node, np) {
 379                 ctu = rsnd_ctu_get(priv, i);
 380
 381                 /*
 382                  * CTU00, CTU01, CTU02, CTU03 => CTU0
 383                  * CTU10, CTU11, CTU12, CTU13 => CTU1
 384                  */
 385                 snprintf(name, CTU_NAME_SIZE, "%s.%d",
 386                          CTU_NAME, i / 4);
 387
 388                 clk = devm_clk_get(dev, name);
 389                 if (IS_ERR(clk)) {
 390                         ret = PTR_ERR(clk);
 391                         goto rsnd_ctu_probe_done;
 392                 }
 393
 394                 ret = rsnd_mod_init(priv, rsnd_mod_get(ctu), &rsnd_ctu_ops,
 395                                     clk, rsnd_mod_get_status, RSND_MOD_CTU, i);
 396                 if (ret)
 397                         goto rsnd_ctu_probe_done;
 398
 399                 i++;
 400         }
 401
 402
 403 rsnd_ctu_probe_done:
 404         of_node_put(node);
 405
 406         return ret;
 407 }
 408
 409 void rsnd_ctu_remove(struct rsnd_priv *priv)
 410 {
 411         struct rsnd_ctu *ctu;
 412         int i;
 413
 414         for_each_rsnd_ctu(ctu, priv, i) {
 415                 rsnd_mod_quit(rsnd_mod_get(ctu));
 416         }
 417 }