1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // Renesas R-Car DVC support 4 // 5 // Copyright (C) 2014 Renesas Solutions Corp. 6 // Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 7 8 /* 9 * Playback Volume 10 * amixer set "DVC Out" 100% 11 * 12 * Capture Volume 13 * amixer set "DVC In" 100% 14 * 15 * Playback Mute 16 * amixer set "DVC Out Mute" on 17 * 18 * Capture Mute 19 * amixer set "DVC In Mute" on 20 * 21 * Volume Ramp 22 * amixer set "DVC Out Ramp Up Rate" "0.125 dB/64 steps" 23 * amixer set "DVC Out Ramp Down Rate" "0.125 dB/512 steps" 24 * amixer set "DVC Out Ramp" on 25 * aplay xxx.wav & 26 * amixer set "DVC Out" 80% // Volume Down 27 * amixer set "DVC Out" 100% // Volume Up 28 */ 29 30 #include "rsnd.h" 31 32 33 #define DVC_NAME "dvc" 34 35 struct rsnd_dvc { 36 struct rsnd_mod mod; 37 struct rsnd_kctrl_cfg_m volume; 38 struct rsnd_kctrl_cfg_m mute; 39 struct rsnd_kctrl_cfg_s ren; /* Ramp Enable */ 40 struct rsnd_kctrl_cfg_s rup; /* Ramp Rate Up */ 41 struct rsnd_kctrl_cfg_s rdown; /* Ramp Rate Down */ 42 }; 43 44 #define rsnd_dvc_get(priv, id) ((struct rsnd_dvc *)(priv->dvc) + id) 45 #define rsnd_dvc_nr(priv) ((priv)->dvc_nr) 46 47 #define rsnd_mod_to_dvc(_mod) \ 48 container_of((_mod), struct rsnd_dvc, mod) 49 50 #define for_each_rsnd_dvc(pos, priv, i) \ 51 for ((i) = 0; \ 52 ((i) < rsnd_dvc_nr(priv)) && \ 53 ((pos) = (struct rsnd_dvc *)(priv)->dvc + i); \ 54 i++) 55 56 static void rsnd_dvc_activation(struct rsnd_mod *mod) 57 { 58 rsnd_mod_write(mod, DVC_SWRSR, 0); 59 rsnd_mod_write(mod, DVC_SWRSR, 1); 60 } 61 62 static void rsnd_dvc_halt(struct rsnd_mod *mod) 63 { 64 rsnd_mod_write(mod, DVC_DVUIR, 1); 65 rsnd_mod_write(mod, DVC_SWRSR, 0); 66 } 67 68 #define rsnd_dvc_get_vrpdr(dvc) (rsnd_kctrl_vals(dvc->rup) << 8 | \ 69 rsnd_kctrl_vals(dvc->rdown)) 70 #define rsnd_dvc_get_vrdbr(dvc) (0x3ff - (rsnd_kctrl_valm(dvc->volume, 0) >> 13)) 71 72 static void rsnd_dvc_volume_parameter(struct rsnd_dai_stream *io, 73 struct rsnd_mod *mod) 74 { 75 struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); 76 u32 val[RSND_MAX_CHANNELS]; 77 int i; 78 79 /* Enable Ramp */ 80 if (rsnd_kctrl_vals(dvc->ren)) 81 for (i = 0; i < RSND_MAX_CHANNELS; i++) 82 val[i] = rsnd_kctrl_max(dvc->volume); 83 else 84 for (i = 0; i < RSND_MAX_CHANNELS; i++) 85 val[i] = rsnd_kctrl_valm(dvc->volume, i); 86 87 /* Enable Digital Volume */ 88 for (i = 0; i < RSND_MAX_CHANNELS; i++) 89 rsnd_mod_write(mod, DVC_VOLxR(i), val[i]); 90 } 91 92 static void rsnd_dvc_volume_init(struct rsnd_dai_stream *io, 93 struct rsnd_mod *mod) 94 { 95 struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); 96 u32 adinr = 0; 97 u32 dvucr = 0; 98 u32 vrctr = 0; 99 u32 vrpdr = 0; 100 u32 vrdbr = 0; 101 102 adinr = rsnd_get_adinr_bit(mod, io) | 103 rsnd_runtime_channel_after_ctu(io); 104 105 /* Enable Digital Volume, Zero Cross Mute Mode */ 106 dvucr |= 0x101; 107 108 /* Enable Ramp */ 109 if (rsnd_kctrl_vals(dvc->ren)) { 110 dvucr |= 0x10; 111 112 /* 113 * FIXME !! 114 * use scale-downed Digital Volume 115 * as Volume Ramp 116 * 7F FFFF -> 3FF 117 */ 118 vrctr = 0xff; 119 vrpdr = rsnd_dvc_get_vrpdr(dvc); 120 vrdbr = rsnd_dvc_get_vrdbr(dvc); 121 } 122 123 /* Initialize operation */ 124 rsnd_mod_write(mod, DVC_DVUIR, 1); 125 126 /* General Information */ 127 rsnd_mod_write(mod, DVC_ADINR, adinr); 128 rsnd_mod_write(mod, DVC_DVUCR, dvucr); 129 130 /* Volume Ramp Parameter */ 131 rsnd_mod_write(mod, DVC_VRCTR, vrctr); 132 rsnd_mod_write(mod, DVC_VRPDR, vrpdr); 133 rsnd_mod_write(mod, DVC_VRDBR, vrdbr); 134 135 /* Digital Volume Function Parameter */ 136 rsnd_dvc_volume_parameter(io, mod); 137 138 /* cancel operation */ 139 rsnd_mod_write(mod, DVC_DVUIR, 0); 140 } 141 142 static void rsnd_dvc_volume_update(struct rsnd_dai_stream *io, 143 struct rsnd_mod *mod) 144 { 145 struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); 146 u32 zcmcr = 0; 147 u32 vrpdr = 0; 148 u32 vrdbr = 0; 149 int i; 150 151 for (i = 0; i < rsnd_kctrl_size(dvc->mute); i++) 152 zcmcr |= (!!rsnd_kctrl_valm(dvc->mute, i)) << i; 153 154 if (rsnd_kctrl_vals(dvc->ren)) { 155 vrpdr = rsnd_dvc_get_vrpdr(dvc); 156 vrdbr = rsnd_dvc_get_vrdbr(dvc); 157 } 158 159 /* Disable DVC Register access */ 160 rsnd_mod_write(mod, DVC_DVUER, 0); 161 162 /* Zero Cross Mute Function */ 163 rsnd_mod_write(mod, DVC_ZCMCR, zcmcr); 164 165 /* Volume Ramp Function */ 166 rsnd_mod_write(mod, DVC_VRPDR, vrpdr); 167 rsnd_mod_write(mod, DVC_VRDBR, vrdbr); 168 /* add DVC_VRWTR here */ 169 170 /* Digital Volume Function Parameter */ 171 rsnd_dvc_volume_parameter(io, mod); 172 173 /* Enable DVC Register access */ 174 rsnd_mod_write(mod, DVC_DVUER, 1); 175 } 176 177 static int rsnd_dvc_probe_(struct rsnd_mod *mod, 178 struct rsnd_dai_stream *io, 179 struct rsnd_priv *priv) 180 { 181 return rsnd_cmd_attach(io, rsnd_mod_id(mod)); 182 } 183 184 static int rsnd_dvc_init(struct rsnd_mod *mod, 185 struct rsnd_dai_stream *io, 186 struct rsnd_priv *priv) 187 { 188 int ret; 189 190 ret = rsnd_mod_power_on(mod); 191 if (ret < 0) 192 return ret; 193 194 rsnd_dvc_activation(mod); 195 196 rsnd_dvc_volume_init(io, mod); 197 198 rsnd_dvc_volume_update(io, mod); 199 200 return 0; 201 } 202 203 static int rsnd_dvc_quit(struct rsnd_mod *mod, 204 struct rsnd_dai_stream *io, 205 struct rsnd_priv *priv) 206 { 207 rsnd_dvc_halt(mod); 208 209 rsnd_mod_power_off(mod); 210 211 return 0; 212 } 213 214 static int rsnd_dvc_pcm_new(struct rsnd_mod *mod, 215 struct rsnd_dai_stream *io, 216 struct snd_soc_pcm_runtime *rtd) 217 { 218 struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); 219 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 220 int is_play = rsnd_io_is_play(io); 221 int channels = rsnd_rdai_channels_get(rdai); 222 int ret; 223 224 /* Volume */ 225 ret = rsnd_kctrl_new_m(mod, io, rtd, 226 is_play ? 227 "DVC Out Playback Volume" : "DVC In Capture Volume", 228 rsnd_kctrl_accept_anytime, 229 rsnd_dvc_volume_update, 230 &dvc->volume, channels, 231 0x00800000 - 1); 232 if (ret < 0) 233 return ret; 234 235 /* Mute */ 236 ret = rsnd_kctrl_new_m(mod, io, rtd, 237 is_play ? 238 "DVC Out Mute Switch" : "DVC In Mute Switch", 239 rsnd_kctrl_accept_anytime, 240 rsnd_dvc_volume_update, 241 &dvc->mute, channels, 242 1); 243 if (ret < 0) 244 return ret; 245 246 /* Ramp */ 247 ret = rsnd_kctrl_new_s(mod, io, rtd, 248 is_play ? 249 "DVC Out Ramp Switch" : "DVC In Ramp Switch", 250 rsnd_kctrl_accept_anytime, 251 rsnd_dvc_volume_update, 252 &dvc->ren, 1); 253 if (ret < 0) 254 return ret; 255 256 ret = rsnd_kctrl_new_e(mod, io, rtd, 257 is_play ? 258 "DVC Out Ramp Up Rate" : "DVC In Ramp Up Rate", 259 rsnd_kctrl_accept_anytime, 260 rsnd_dvc_volume_update, 261 &dvc->rup, 262 volume_ramp_rate, 263 VOLUME_RAMP_MAX_DVC); 264 if (ret < 0) 265 return ret; 266 267 ret = rsnd_kctrl_new_e(mod, io, rtd, 268 is_play ? 269 "DVC Out Ramp Down Rate" : "DVC In Ramp Down Rate", 270 rsnd_kctrl_accept_anytime, 271 rsnd_dvc_volume_update, 272 &dvc->rdown, 273 volume_ramp_rate, 274 VOLUME_RAMP_MAX_DVC); 275 276 if (ret < 0) 277 return ret; 278 279 return 0; 280 } 281 282 static struct dma_chan *rsnd_dvc_dma_req(struct rsnd_dai_stream *io, 283 struct rsnd_mod *mod) 284 { 285 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 286 287 return rsnd_dma_request_channel(rsnd_dvc_of_node(priv), 288 DVC_NAME, mod, "tx"); 289 } 290 291 #ifdef CONFIG_DEBUG_FS 292 static void rsnd_dvc_debug_info(struct seq_file *m, 293 struct rsnd_dai_stream *io, 294 struct rsnd_mod *mod) 295 { 296 rsnd_debugfs_mod_reg_show(m, mod, RSND_BASE_SCU, 297 0xe00 + rsnd_mod_id(mod) * 0x100, 0x60); 298 } 299 #define DEBUG_INFO .debug_info = rsnd_dvc_debug_info 300 #else 301 #define DEBUG_INFO 302 #endif 303 304 static struct rsnd_mod_ops rsnd_dvc_ops = { 305 .name = DVC_NAME, 306 .dma_req = rsnd_dvc_dma_req, 307 .probe = rsnd_dvc_probe_, 308 .init = rsnd_dvc_init, 309 .quit = rsnd_dvc_quit, 310 .pcm_new = rsnd_dvc_pcm_new, 311 .get_status = rsnd_mod_get_status, 312 DEBUG_INFO 313 }; 314 315 struct rsnd_mod *rsnd_dvc_mod_get(struct rsnd_priv *priv, int id) 316 { 317 if (WARN_ON(id < 0 || id >= rsnd_dvc_nr(priv))) 318 id = 0; 319 320 return rsnd_mod_get(rsnd_dvc_get(priv, id)); 321 } 322 323 int rsnd_dvc_probe(struct rsnd_priv *priv) 324 { 325 struct device_node *node; 326 struct device *dev = rsnd_priv_to_dev(priv); 327 struct rsnd_dvc *dvc; 328 struct clk *clk; 329 int i, nr, ret; 330 331 node = rsnd_dvc_of_node(priv); 332 if (!node) 333 return 0; /* not used is not error */ 334 335 nr = of_get_child_count(node); 336 if (!nr) { 337 ret = -EINVAL; 338 goto rsnd_dvc_probe_done; 339 } 340 341 dvc = devm_kcalloc(dev, nr, sizeof(*dvc), GFP_KERNEL); 342 if (!dvc) { 343 ret = -ENOMEM; 344 goto rsnd_dvc_probe_done; 345 } 346 347 priv->dvc_nr = nr; 348 priv->dvc = dvc; 349 350 i = 0; 351 ret = 0; 352 for_each_child_of_node_scoped(node, np) { 353 dvc = rsnd_dvc_get(priv, i); 354 355 clk = rsnd_devm_clk_get_indexed(dev, DVC_NAME, i); 356 if (IS_ERR(clk)) { 357 ret = PTR_ERR(clk); 358 goto rsnd_dvc_probe_done; 359 } 360 361 ret = rsnd_mod_init(priv, rsnd_mod_get(dvc), &rsnd_dvc_ops, 362 clk, NULL, RSND_MOD_DVC, i); 363 if (ret) 364 goto rsnd_dvc_probe_done; 365 366 i++; 367 } 368 369 rsnd_dvc_probe_done: 370 of_node_put(node); 371 372 return ret; 373 } 374 375 void rsnd_dvc_remove(struct rsnd_priv *priv) 376 { 377 struct rsnd_dvc *dvc; 378 int i; 379 380 for_each_rsnd_dvc(dvc, priv, i) { 381 rsnd_mod_quit(rsnd_mod_get(dvc)); 382 } 383 } 384 385 void rsnd_dvc_suspend(struct rsnd_priv *priv) 386 { 387 struct rsnd_dvc *dvc; 388 int i; 389 390 for_each_rsnd_dvc(dvc, priv, i) 391 rsnd_suspend_clk_reset(rsnd_mod_get(dvc)->clk, 392 rsnd_mod_get(dvc)->rstc); 393 } 394 395 void rsnd_dvc_resume(struct rsnd_priv *priv) 396 { 397 struct rsnd_dvc *dvc; 398 int i; 399 400 for_each_rsnd_dvc(dvc, priv, i) 401 rsnd_resume_clk_reset(rsnd_mod_get(dvc)->clk, 402 rsnd_mod_get(dvc)->rstc); 403 } 404