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 #define RSND_DVC_NAME_SIZE 16 33 34 #define DVC_NAME "dvc" 35 36 struct rsnd_dvc { 37 struct rsnd_mod mod; 38 struct rsnd_kctrl_cfg_m volume; 39 struct rsnd_kctrl_cfg_m mute; 40 struct rsnd_kctrl_cfg_s ren; /* Ramp Enable */ 41 struct rsnd_kctrl_cfg_s rup; /* Ramp Rate Up */ 42 struct rsnd_kctrl_cfg_s rdown; /* Ramp Rate Down */ 43 }; 44 45 #define rsnd_dvc_get(priv, id) ((struct rsnd_dvc *)(priv->dvc) + id) 46 #define rsnd_dvc_nr(priv) ((priv)->dvc_nr) 47 48 #define rsnd_mod_to_dvc(_mod) \ 49 container_of((_mod), struct rsnd_dvc, mod) 50 51 #define for_each_rsnd_dvc(pos, priv, i) \ 52 for ((i) = 0; \ 53 ((i) < rsnd_dvc_nr(priv)) && \ 54 ((pos) = (struct rsnd_dvc *)(priv)->dvc + i); \ 55 i++) 56 rsnd_dvc_activation(struct rsnd_mod * mod)57 static void rsnd_dvc_activation(struct rsnd_mod *mod) 58 { 59 rsnd_mod_write(mod, DVC_SWRSR, 0); 60 rsnd_mod_write(mod, DVC_SWRSR, 1); 61 } 62 rsnd_dvc_halt(struct rsnd_mod * mod)63 static void rsnd_dvc_halt(struct rsnd_mod *mod) 64 { 65 rsnd_mod_write(mod, DVC_DVUIR, 1); 66 rsnd_mod_write(mod, DVC_SWRSR, 0); 67 } 68 69 #define rsnd_dvc_get_vrpdr(dvc) (rsnd_kctrl_vals(dvc->rup) << 8 | \ 70 rsnd_kctrl_vals(dvc->rdown)) 71 #define rsnd_dvc_get_vrdbr(dvc) (0x3ff - (rsnd_kctrl_valm(dvc->volume, 0) >> 13)) 72 rsnd_dvc_volume_parameter(struct rsnd_dai_stream * io,struct rsnd_mod * mod)73 static void rsnd_dvc_volume_parameter(struct rsnd_dai_stream *io, 74 struct rsnd_mod *mod) 75 { 76 struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); 77 u32 val[RSND_MAX_CHANNELS]; 78 int i; 79 80 /* Enable Ramp */ 81 if (rsnd_kctrl_vals(dvc->ren)) 82 for (i = 0; i < RSND_MAX_CHANNELS; i++) 83 val[i] = rsnd_kctrl_max(dvc->volume); 84 else 85 for (i = 0; i < RSND_MAX_CHANNELS; i++) 86 val[i] = rsnd_kctrl_valm(dvc->volume, i); 87 88 /* Enable Digital Volume */ 89 for (i = 0; i < RSND_MAX_CHANNELS; i++) 90 rsnd_mod_write(mod, DVC_VOLxR(i), val[i]); 91 } 92 rsnd_dvc_volume_init(struct rsnd_dai_stream * io,struct rsnd_mod * mod)93 static void rsnd_dvc_volume_init(struct rsnd_dai_stream *io, 94 struct rsnd_mod *mod) 95 { 96 struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); 97 u32 adinr = 0; 98 u32 dvucr = 0; 99 u32 vrctr = 0; 100 u32 vrpdr = 0; 101 u32 vrdbr = 0; 102 103 adinr = rsnd_get_adinr_bit(mod, io) | 104 rsnd_runtime_channel_after_ctu(io); 105 106 /* Enable Digital Volume, Zero Cross Mute Mode */ 107 dvucr |= 0x101; 108 109 /* Enable Ramp */ 110 if (rsnd_kctrl_vals(dvc->ren)) { 111 dvucr |= 0x10; 112 113 /* 114 * FIXME !! 115 * use scale-downed Digital Volume 116 * as Volume Ramp 117 * 7F FFFF -> 3FF 118 */ 119 vrctr = 0xff; 120 vrpdr = rsnd_dvc_get_vrpdr(dvc); 121 vrdbr = rsnd_dvc_get_vrdbr(dvc); 122 } 123 124 /* Initialize operation */ 125 rsnd_mod_write(mod, DVC_DVUIR, 1); 126 127 /* General Information */ 128 rsnd_mod_write(mod, DVC_ADINR, adinr); 129 rsnd_mod_write(mod, DVC_DVUCR, dvucr); 130 131 /* Volume Ramp Parameter */ 132 rsnd_mod_write(mod, DVC_VRCTR, vrctr); 133 rsnd_mod_write(mod, DVC_VRPDR, vrpdr); 134 rsnd_mod_write(mod, DVC_VRDBR, vrdbr); 135 136 /* Digital Volume Function Parameter */ 137 rsnd_dvc_volume_parameter(io, mod); 138 139 /* cancel operation */ 140 rsnd_mod_write(mod, DVC_DVUIR, 0); 141 } 142 rsnd_dvc_volume_update(struct rsnd_dai_stream * io,struct rsnd_mod * mod)143 static void rsnd_dvc_volume_update(struct rsnd_dai_stream *io, 144 struct rsnd_mod *mod) 145 { 146 struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); 147 u32 zcmcr = 0; 148 u32 vrpdr = 0; 149 u32 vrdbr = 0; 150 int i; 151 152 for (i = 0; i < rsnd_kctrl_size(dvc->mute); i++) 153 zcmcr |= (!!rsnd_kctrl_valm(dvc->mute, i)) << i; 154 155 if (rsnd_kctrl_vals(dvc->ren)) { 156 vrpdr = rsnd_dvc_get_vrpdr(dvc); 157 vrdbr = rsnd_dvc_get_vrdbr(dvc); 158 } 159 160 /* Disable DVC Register access */ 161 rsnd_mod_write(mod, DVC_DVUER, 0); 162 163 /* Zero Cross Mute Function */ 164 rsnd_mod_write(mod, DVC_ZCMCR, zcmcr); 165 166 /* Volume Ramp Function */ 167 rsnd_mod_write(mod, DVC_VRPDR, vrpdr); 168 rsnd_mod_write(mod, DVC_VRDBR, vrdbr); 169 /* add DVC_VRWTR here */ 170 171 /* Digital Volume Function Parameter */ 172 rsnd_dvc_volume_parameter(io, mod); 173 174 /* Enable DVC Register access */ 175 rsnd_mod_write(mod, DVC_DVUER, 1); 176 } 177 rsnd_dvc_probe_(struct rsnd_mod * mod,struct rsnd_dai_stream * io,struct rsnd_priv * priv)178 static int rsnd_dvc_probe_(struct rsnd_mod *mod, 179 struct rsnd_dai_stream *io, 180 struct rsnd_priv *priv) 181 { 182 return rsnd_cmd_attach(io, rsnd_mod_id(mod)); 183 } 184 rsnd_dvc_init(struct rsnd_mod * mod,struct rsnd_dai_stream * io,struct rsnd_priv * priv)185 static int rsnd_dvc_init(struct rsnd_mod *mod, 186 struct rsnd_dai_stream *io, 187 struct rsnd_priv *priv) 188 { 189 int ret; 190 191 ret = rsnd_mod_power_on(mod); 192 if (ret < 0) 193 return ret; 194 195 rsnd_dvc_activation(mod); 196 197 rsnd_dvc_volume_init(io, mod); 198 199 rsnd_dvc_volume_update(io, mod); 200 201 return 0; 202 } 203 rsnd_dvc_quit(struct rsnd_mod * mod,struct rsnd_dai_stream * io,struct rsnd_priv * priv)204 static int rsnd_dvc_quit(struct rsnd_mod *mod, 205 struct rsnd_dai_stream *io, 206 struct rsnd_priv *priv) 207 { 208 rsnd_dvc_halt(mod); 209 210 rsnd_mod_power_off(mod); 211 212 return 0; 213 } 214 rsnd_dvc_pcm_new(struct rsnd_mod * mod,struct rsnd_dai_stream * io,struct snd_soc_pcm_runtime * rtd)215 static int rsnd_dvc_pcm_new(struct rsnd_mod *mod, 216 struct rsnd_dai_stream *io, 217 struct snd_soc_pcm_runtime *rtd) 218 { 219 struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); 220 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 221 int is_play = rsnd_io_is_play(io); 222 int channels = rsnd_rdai_channels_get(rdai); 223 int ret; 224 225 /* Volume */ 226 ret = rsnd_kctrl_new_m(mod, io, rtd, 227 is_play ? 228 "DVC Out Playback Volume" : "DVC In Capture Volume", 229 rsnd_kctrl_accept_anytime, 230 rsnd_dvc_volume_update, 231 &dvc->volume, channels, 232 0x00800000 - 1); 233 if (ret < 0) 234 return ret; 235 236 /* Mute */ 237 ret = rsnd_kctrl_new_m(mod, io, rtd, 238 is_play ? 239 "DVC Out Mute Switch" : "DVC In Mute Switch", 240 rsnd_kctrl_accept_anytime, 241 rsnd_dvc_volume_update, 242 &dvc->mute, channels, 243 1); 244 if (ret < 0) 245 return ret; 246 247 /* Ramp */ 248 ret = rsnd_kctrl_new_s(mod, io, rtd, 249 is_play ? 250 "DVC Out Ramp Switch" : "DVC In Ramp Switch", 251 rsnd_kctrl_accept_anytime, 252 rsnd_dvc_volume_update, 253 &dvc->ren, 1); 254 if (ret < 0) 255 return ret; 256 257 ret = rsnd_kctrl_new_e(mod, io, rtd, 258 is_play ? 259 "DVC Out Ramp Up Rate" : "DVC In Ramp Up Rate", 260 rsnd_kctrl_accept_anytime, 261 rsnd_dvc_volume_update, 262 &dvc->rup, 263 volume_ramp_rate, 264 VOLUME_RAMP_MAX_DVC); 265 if (ret < 0) 266 return ret; 267 268 ret = rsnd_kctrl_new_e(mod, io, rtd, 269 is_play ? 270 "DVC Out Ramp Down Rate" : "DVC In Ramp Down Rate", 271 rsnd_kctrl_accept_anytime, 272 rsnd_dvc_volume_update, 273 &dvc->rdown, 274 volume_ramp_rate, 275 VOLUME_RAMP_MAX_DVC); 276 277 if (ret < 0) 278 return ret; 279 280 return 0; 281 } 282 rsnd_dvc_dma_req(struct rsnd_dai_stream * io,struct rsnd_mod * mod)283 static struct dma_chan *rsnd_dvc_dma_req(struct rsnd_dai_stream *io, 284 struct rsnd_mod *mod) 285 { 286 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 287 288 return rsnd_dma_request_channel(rsnd_dvc_of_node(priv), 289 DVC_NAME, mod, "tx"); 290 } 291 292 #ifdef CONFIG_DEBUG_FS rsnd_dvc_debug_info(struct seq_file * m,struct rsnd_dai_stream * io,struct rsnd_mod * mod)293 static void rsnd_dvc_debug_info(struct seq_file *m, 294 struct rsnd_dai_stream *io, 295 struct rsnd_mod *mod) 296 { 297 rsnd_debugfs_mod_reg_show(m, mod, RSND_GEN2_SCU, 298 0xe00 + rsnd_mod_id(mod) * 0x100, 0x60); 299 } 300 #define DEBUG_INFO .debug_info = rsnd_dvc_debug_info 301 #else 302 #define DEBUG_INFO 303 #endif 304 305 static struct rsnd_mod_ops rsnd_dvc_ops = { 306 .name = DVC_NAME, 307 .dma_req = rsnd_dvc_dma_req, 308 .probe = rsnd_dvc_probe_, 309 .init = rsnd_dvc_init, 310 .quit = rsnd_dvc_quit, 311 .pcm_new = rsnd_dvc_pcm_new, 312 .get_status = rsnd_mod_get_status, 313 DEBUG_INFO 314 }; 315 rsnd_dvc_mod_get(struct rsnd_priv * priv,int id)316 struct rsnd_mod *rsnd_dvc_mod_get(struct rsnd_priv *priv, int id) 317 { 318 if (WARN_ON(id < 0 || id >= rsnd_dvc_nr(priv))) 319 id = 0; 320 321 return rsnd_mod_get(rsnd_dvc_get(priv, id)); 322 } 323 rsnd_dvc_probe(struct rsnd_priv * priv)324 int rsnd_dvc_probe(struct rsnd_priv *priv) 325 { 326 struct device_node *node; 327 struct device_node *np; 328 struct device *dev = rsnd_priv_to_dev(priv); 329 struct rsnd_dvc *dvc; 330 struct clk *clk; 331 char name[RSND_DVC_NAME_SIZE]; 332 int i, nr, ret; 333 334 /* This driver doesn't support Gen1 at this point */ 335 if (rsnd_is_gen1(priv)) 336 return 0; 337 338 node = rsnd_dvc_of_node(priv); 339 if (!node) 340 return 0; /* not used is not error */ 341 342 nr = of_get_child_count(node); 343 if (!nr) { 344 ret = -EINVAL; 345 goto rsnd_dvc_probe_done; 346 } 347 348 dvc = devm_kcalloc(dev, nr, sizeof(*dvc), GFP_KERNEL); 349 if (!dvc) { 350 ret = -ENOMEM; 351 goto rsnd_dvc_probe_done; 352 } 353 354 priv->dvc_nr = nr; 355 priv->dvc = dvc; 356 357 i = 0; 358 ret = 0; 359 for_each_child_of_node(node, np) { 360 dvc = rsnd_dvc_get(priv, i); 361 362 snprintf(name, RSND_DVC_NAME_SIZE, "%s.%d", 363 DVC_NAME, i); 364 365 clk = devm_clk_get(dev, name); 366 if (IS_ERR(clk)) { 367 ret = PTR_ERR(clk); 368 of_node_put(np); 369 goto rsnd_dvc_probe_done; 370 } 371 372 ret = rsnd_mod_init(priv, rsnd_mod_get(dvc), &rsnd_dvc_ops, 373 clk, RSND_MOD_DVC, i); 374 if (ret) { 375 of_node_put(np); 376 goto rsnd_dvc_probe_done; 377 } 378 379 i++; 380 } 381 382 rsnd_dvc_probe_done: 383 of_node_put(node); 384 385 return ret; 386 } 387 rsnd_dvc_remove(struct rsnd_priv * priv)388 void rsnd_dvc_remove(struct rsnd_priv *priv) 389 { 390 struct rsnd_dvc *dvc; 391 int i; 392 393 for_each_rsnd_dvc(dvc, priv, i) { 394 rsnd_mod_quit(rsnd_mod_get(dvc)); 395 } 396 } 397