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 } 418