1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // ctu.c 4 // 5 // Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 6 7 #include "rsnd.h" 8 9 #define CTU_NAME_SIZE 16 10 #define CTU_NAME "ctu" 11 12 /* 13 * User needs to setup CTU by amixer, and its settings are 14 * based on below registers 15 * 16 * CTUn_CPMDR : amixser set "CTU Pass" 17 * CTUn_SV0xR : amixser set "CTU SV0" 18 * CTUn_SV1xR : amixser set "CTU SV1" 19 * CTUn_SV2xR : amixser set "CTU SV2" 20 * CTUn_SV3xR : amixser set "CTU SV3" 21 * 22 * [CTU Pass] 23 * 0000: default 24 * 0001: Connect input data of channel 0 25 * 0010: Connect input data of channel 1 26 * 0011: Connect input data of channel 2 27 * 0100: Connect input data of channel 3 28 * 0101: Connect input data of channel 4 29 * 0110: Connect input data of channel 5 30 * 0111: Connect input data of channel 6 31 * 1000: Connect input data of channel 7 32 * 1001: Connect calculated data by scale values of matrix row 0 33 * 1010: Connect calculated data by scale values of matrix row 1 34 * 1011: Connect calculated data by scale values of matrix row 2 35 * 1100: Connect calculated data by scale values of matrix row 3 36 * 37 * [CTU SVx] 38 * [Output0] = [SV00, SV01, SV02, SV03, SV04, SV05, SV06, SV07] 39 * [Output1] = [SV10, SV11, SV12, SV13, SV14, SV15, SV16, SV17] 40 * [Output2] = [SV20, SV21, SV22, SV23, SV24, SV25, SV26, SV27] 41 * [Output3] = [SV30, SV31, SV32, SV33, SV34, SV35, SV36, SV37] 42 * [Output4] = [ 0, 0, 0, 0, 0, 0, 0, 0 ] 43 * [Output5] = [ 0, 0, 0, 0, 0, 0, 0, 0 ] 44 * [Output6] = [ 0, 0, 0, 0, 0, 0, 0, 0 ] 45 * [Output7] = [ 0, 0, 0, 0, 0, 0, 0, 0 ] 46 * 47 * [SVxx] 48 * Plus Minus 49 * value time dB value time dB 50 * ----------------------------------------------------------------------- 51 * H'7F_FFFF 2 6 H'80_0000 2 6 52 * ... 53 * H'40_0000 1 0 H'C0_0000 1 0 54 * ... 55 * H'00_0001 2.38 x 10^-7 -132 56 * H'00_0000 0 Mute H'FF_FFFF 2.38 x 10^-7 -132 57 * 58 * 59 * Ex) Input ch -> Output ch 60 * 1ch -> 0ch 61 * 0ch -> 1ch 62 * 63 * amixer set "CTU Reset" on 64 * amixer set "CTU Pass" 9,10 65 * amixer set "CTU SV0" 0,4194304 66 * amixer set "CTU SV1" 4194304,0 67 * or 68 * amixer set "CTU Reset" on 69 * amixer set "CTU Pass" 2,1 70 */ 71 72 struct rsnd_ctu { 73 struct rsnd_mod mod; 74 struct rsnd_kctrl_cfg_m pass; 75 struct rsnd_kctrl_cfg_m sv[4]; 76 struct rsnd_kctrl_cfg_s reset; 77 int channels; 78 u32 flags; 79 }; 80 81 #define KCTRL_INITIALIZED (1 << 0) 82 83 #define rsnd_ctu_nr(priv) ((priv)->ctu_nr) 84 #define for_each_rsnd_ctu(pos, priv, i) \ 85 for ((i) = 0; \ 86 ((i) < rsnd_ctu_nr(priv)) && \ 87 ((pos) = (struct rsnd_ctu *)(priv)->ctu + i); \ 88 i++) 89 90 #define rsnd_mod_to_ctu(_mod) \ 91 container_of((_mod), struct rsnd_ctu, mod) 92 93 #define rsnd_ctu_get(priv, id) ((struct rsnd_ctu *)(priv->ctu) + id) 94 95 static void rsnd_ctu_activation(struct rsnd_mod *mod) 96 { 97 rsnd_mod_write(mod, CTU_SWRSR, 0); 98 rsnd_mod_write(mod, CTU_SWRSR, 1); 99 } 100 101 static void rsnd_ctu_halt(struct rsnd_mod *mod) 102 { 103 rsnd_mod_write(mod, CTU_CTUIR, 1); 104 rsnd_mod_write(mod, CTU_SWRSR, 0); 105 } 106 107 static int rsnd_ctu_probe_(struct rsnd_mod *mod, 108 struct rsnd_dai_stream *io, 109 struct rsnd_priv *priv) 110 { 111 return rsnd_cmd_attach(io, rsnd_mod_id(mod)); 112 } 113 114 static void rsnd_ctu_value_init(struct rsnd_dai_stream *io, 115 struct rsnd_mod *mod) 116 { 117 struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod); 118 u32 cpmdr = 0; 119 u32 scmdr = 0; 120 int i, j; 121 122 for (i = 0; i < RSND_MAX_CHANNELS; i++) { 123 u32 val = rsnd_kctrl_valm(ctu->pass, i); 124 125 cpmdr |= val << (28 - (i * 4)); 126 127 if ((val > 0x8) && (scmdr < (val - 0x8))) 128 scmdr = val - 0x8; 129 } 130 131 rsnd_mod_write(mod, CTU_CTUIR, 1); 132 133 rsnd_mod_write(mod, CTU_ADINR, rsnd_runtime_channel_original(io)); 134 135 rsnd_mod_write(mod, CTU_CPMDR, cpmdr); 136 137 rsnd_mod_write(mod, CTU_SCMDR, scmdr); 138 139 for (i = 0; i < 4; i++) { 140 141 if (i >= scmdr) 142 break; 143 144 for (j = 0; j < RSND_MAX_CHANNELS; j++) 145 rsnd_mod_write(mod, CTU_SVxxR(i, j), rsnd_kctrl_valm(ctu->sv[i], j)); 146 } 147 148 rsnd_mod_write(mod, CTU_CTUIR, 0); 149 } 150 151 static void rsnd_ctu_value_reset(struct rsnd_dai_stream *io, 152 struct rsnd_mod *mod) 153 { 154 struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod); 155 int i; 156 157 if (!rsnd_kctrl_vals(ctu->reset)) 158 return; 159 160 for (i = 0; i < RSND_MAX_CHANNELS; i++) { 161 rsnd_kctrl_valm(ctu->pass, i) = 0; 162 rsnd_kctrl_valm(ctu->sv[0], i) = 0; 163 rsnd_kctrl_valm(ctu->sv[1], i) = 0; 164 rsnd_kctrl_valm(ctu->sv[2], i) = 0; 165 rsnd_kctrl_valm(ctu->sv[3], i) = 0; 166 } 167 rsnd_kctrl_vals(ctu->reset) = 0; 168 } 169 170 static int rsnd_ctu_init(struct rsnd_mod *mod, 171 struct rsnd_dai_stream *io, 172 struct rsnd_priv *priv) 173 { 174 int ret; 175 176 ret = rsnd_mod_power_on(mod); 177 if (ret < 0) 178 return ret; 179 180 rsnd_ctu_activation(mod); 181 182 rsnd_ctu_value_init(io, mod); 183 184 return 0; 185 } 186 187 static int rsnd_ctu_quit(struct rsnd_mod *mod, 188 struct rsnd_dai_stream *io, 189 struct rsnd_priv *priv) 190 { 191 rsnd_ctu_halt(mod); 192 193 rsnd_mod_power_off(mod); 194 195 return 0; 196 } 197 198 static int rsnd_ctu_pcm_new(struct rsnd_mod *mod, 199 struct rsnd_dai_stream *io, 200 struct snd_soc_pcm_runtime *rtd) 201 { 202 struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod); 203 int ret; 204 205 if (rsnd_flags_has(ctu, KCTRL_INITIALIZED)) 206 return 0; 207 208 /* CTU Pass */ 209 ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU Pass", 210 rsnd_kctrl_accept_anytime, 211 NULL, 212 &ctu->pass, RSND_MAX_CHANNELS, 213 0xC); 214 if (ret < 0) 215 return ret; 216 217 /* ROW0 */ 218 ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV0", 219 rsnd_kctrl_accept_anytime, 220 NULL, 221 &ctu->sv[0], RSND_MAX_CHANNELS, 222 0x00FFFFFF); 223 if (ret < 0) 224 return ret; 225 226 /* ROW1 */ 227 ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV1", 228 rsnd_kctrl_accept_anytime, 229 NULL, 230 &ctu->sv[1], RSND_MAX_CHANNELS, 231 0x00FFFFFF); 232 if (ret < 0) 233 return ret; 234 235 /* ROW2 */ 236 ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV2", 237 rsnd_kctrl_accept_anytime, 238 NULL, 239 &ctu->sv[2], RSND_MAX_CHANNELS, 240 0x00FFFFFF); 241 if (ret < 0) 242 return ret; 243 244 /* ROW3 */ 245 ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV3", 246 rsnd_kctrl_accept_anytime, 247 NULL, 248 &ctu->sv[3], RSND_MAX_CHANNELS, 249 0x00FFFFFF); 250 if (ret < 0) 251 return ret; 252 253 /* Reset */ 254 ret = rsnd_kctrl_new_s(mod, io, rtd, "CTU Reset", 255 rsnd_kctrl_accept_anytime, 256 rsnd_ctu_value_reset, 257 &ctu->reset, 1); 258 259 rsnd_flags_set(ctu, KCTRL_INITIALIZED); 260 261 return ret; 262 } 263 264 static int rsnd_ctu_id(struct rsnd_mod *mod) 265 { 266 /* 267 * ctu00: -> 0, ctu01: -> 0, ctu02: -> 0, ctu03: -> 0 268 * ctu10: -> 1, ctu11: -> 1, ctu12: -> 1, ctu13: -> 1 269 */ 270 return mod->id / 4; 271 } 272 273 static int rsnd_ctu_id_sub(struct rsnd_mod *mod) 274 { 275 /* 276 * ctu00: -> 0, ctu01: -> 1, ctu02: -> 2, ctu03: -> 3 277 * ctu10: -> 0, ctu11: -> 1, ctu12: -> 2, ctu13: -> 3 278 */ 279 return mod->id % 4; 280 } 281 282 #ifdef CONFIG_DEBUG_FS 283 static void rsnd_ctu_debug_info(struct seq_file *m, 284 struct rsnd_dai_stream *io, 285 struct rsnd_mod *mod) 286 { 287 rsnd_debugfs_mod_reg_show(m, mod, RSND_BASE_SCU, 288 0x500 + rsnd_mod_id_raw(mod) * 0x100, 0x100); 289 } 290 #define DEBUG_INFO .debug_info = rsnd_ctu_debug_info 291 #else 292 #define DEBUG_INFO 293 #endif 294 295 static struct rsnd_mod_ops rsnd_ctu_ops = { 296 .name = CTU_NAME, 297 .probe = rsnd_ctu_probe_, 298 .init = rsnd_ctu_init, 299 .quit = rsnd_ctu_quit, 300 .pcm_new = rsnd_ctu_pcm_new, 301 .get_status = rsnd_mod_get_status, 302 .id = rsnd_ctu_id, 303 .id_sub = rsnd_ctu_id_sub, 304 .id_cmd = rsnd_mod_id_raw, 305 DEBUG_INFO 306 }; 307 308 struct rsnd_mod *rsnd_ctu_mod_get(struct rsnd_priv *priv, int id) 309 { 310 if (WARN_ON(id < 0 || id >= rsnd_ctu_nr(priv))) 311 id = 0; 312 313 return rsnd_mod_get(rsnd_ctu_get(priv, id)); 314 } 315 316 int rsnd_ctu_probe(struct rsnd_priv *priv) 317 { 318 struct device_node *node; 319 struct device_node *np; 320 struct device *dev = rsnd_priv_to_dev(priv); 321 struct rsnd_ctu *ctu; 322 struct clk *clk; 323 char name[CTU_NAME_SIZE]; 324 int i, nr, ret; 325 326 node = rsnd_ctu_of_node(priv); 327 if (!node) 328 return 0; /* not used is not error */ 329 330 nr = of_get_child_count(node); 331 if (!nr) { 332 ret = -EINVAL; 333 goto rsnd_ctu_probe_done; 334 } 335 336 ctu = devm_kcalloc(dev, nr, sizeof(*ctu), GFP_KERNEL); 337 if (!ctu) { 338 ret = -ENOMEM; 339 goto rsnd_ctu_probe_done; 340 } 341 342 priv->ctu_nr = nr; 343 priv->ctu = ctu; 344 345 i = 0; 346 ret = 0; 347 for_each_child_of_node(node, np) { 348 ctu = rsnd_ctu_get(priv, i); 349 350 /* 351 * CTU00, CTU01, CTU02, CTU03 => CTU0 352 * CTU10, CTU11, CTU12, CTU13 => CTU1 353 */ 354 snprintf(name, CTU_NAME_SIZE, "%s.%d", 355 CTU_NAME, i / 4); 356 357 clk = devm_clk_get(dev, name); 358 if (IS_ERR(clk)) { 359 ret = PTR_ERR(clk); 360 of_node_put(np); 361 goto rsnd_ctu_probe_done; 362 } 363 364 ret = rsnd_mod_init(priv, rsnd_mod_get(ctu), &rsnd_ctu_ops, 365 clk, RSND_MOD_CTU, i); 366 if (ret) { 367 of_node_put(np); 368 goto rsnd_ctu_probe_done; 369 } 370 371 i++; 372 } 373 374 375 rsnd_ctu_probe_done: 376 of_node_put(node); 377 378 return ret; 379 } 380 381 void rsnd_ctu_remove(struct rsnd_priv *priv) 382 { 383 struct rsnd_ctu *ctu; 384 int i; 385 386 for_each_rsnd_ctu(ctu, priv, i) { 387 rsnd_mod_quit(rsnd_mod_get(ctu)); 388 } 389 } 390