1 /* 2 * Renesas R-Car Gen1 SRU/SSI support 3 * 4 * Copyright (C) 2013 Renesas Solutions Corp. 5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 #include "rsnd.h" 12 13 struct rsnd_gen { 14 void __iomem *base[RSND_BASE_MAX]; 15 16 struct rsnd_gen_ops *ops; 17 18 struct regmap *regmap; 19 struct regmap_field *regs[RSND_REG_MAX]; 20 }; 21 22 #define rsnd_priv_to_gen(p) ((struct rsnd_gen *)(p)->gen) 23 24 #define RSND_REG_SET(gen, id, reg_id, offset, _id_offset, _id_size) \ 25 [id] = { \ 26 .reg = (unsigned int)gen->base[reg_id] + offset, \ 27 .lsb = 0, \ 28 .msb = 31, \ 29 .id_size = _id_size, \ 30 .id_offset = _id_offset, \ 31 } 32 33 /* 34 * basic function 35 */ 36 static int rsnd_regmap_write32(void *context, const void *_data, size_t count) 37 { 38 struct rsnd_priv *priv = context; 39 struct device *dev = rsnd_priv_to_dev(priv); 40 u32 *data = (u32 *)_data; 41 u32 val = data[1]; 42 void __iomem *reg = (void *)data[0]; 43 44 iowrite32(val, reg); 45 46 dev_dbg(dev, "w %p : %08x\n", reg, val); 47 48 return 0; 49 } 50 51 static int rsnd_regmap_read32(void *context, 52 const void *_data, size_t reg_size, 53 void *_val, size_t val_size) 54 { 55 struct rsnd_priv *priv = context; 56 struct device *dev = rsnd_priv_to_dev(priv); 57 u32 *data = (u32 *)_data; 58 u32 *val = (u32 *)_val; 59 void __iomem *reg = (void *)data[0]; 60 61 *val = ioread32(reg); 62 63 dev_dbg(dev, "r %p : %08x\n", reg, *val); 64 65 return 0; 66 } 67 68 static struct regmap_bus rsnd_regmap_bus = { 69 .write = rsnd_regmap_write32, 70 .read = rsnd_regmap_read32, 71 .reg_format_endian_default = REGMAP_ENDIAN_NATIVE, 72 .val_format_endian_default = REGMAP_ENDIAN_NATIVE, 73 }; 74 75 static int rsnd_is_accessible_reg(struct rsnd_priv *priv, 76 struct rsnd_gen *gen, enum rsnd_reg reg) 77 { 78 if (!gen->regs[reg]) { 79 struct device *dev = rsnd_priv_to_dev(priv); 80 81 dev_err(dev, "unsupported register access %x\n", reg); 82 return 0; 83 } 84 85 return 1; 86 } 87 88 u32 rsnd_read(struct rsnd_priv *priv, 89 struct rsnd_mod *mod, enum rsnd_reg reg) 90 { 91 struct rsnd_gen *gen = rsnd_priv_to_gen(priv); 92 u32 val; 93 94 if (!rsnd_is_accessible_reg(priv, gen, reg)) 95 return 0; 96 97 regmap_fields_read(gen->regs[reg], rsnd_mod_id(mod), &val); 98 99 return val; 100 } 101 102 void rsnd_write(struct rsnd_priv *priv, 103 struct rsnd_mod *mod, 104 enum rsnd_reg reg, u32 data) 105 { 106 struct rsnd_gen *gen = rsnd_priv_to_gen(priv); 107 108 if (!rsnd_is_accessible_reg(priv, gen, reg)) 109 return; 110 111 regmap_fields_write(gen->regs[reg], rsnd_mod_id(mod), data); 112 } 113 114 void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod, 115 enum rsnd_reg reg, u32 mask, u32 data) 116 { 117 struct rsnd_gen *gen = rsnd_priv_to_gen(priv); 118 119 if (!rsnd_is_accessible_reg(priv, gen, reg)) 120 return; 121 122 regmap_fields_update_bits(gen->regs[reg], rsnd_mod_id(mod), 123 mask, data); 124 } 125 126 static int rsnd_gen_regmap_init(struct rsnd_priv *priv, 127 struct rsnd_gen *gen, 128 struct reg_field *regf) 129 { 130 int i; 131 struct device *dev = rsnd_priv_to_dev(priv); 132 struct regmap_config regc; 133 134 memset(®c, 0, sizeof(regc)); 135 regc.reg_bits = 32; 136 regc.val_bits = 32; 137 138 gen->regmap = devm_regmap_init(dev, &rsnd_regmap_bus, priv, ®c); 139 if (IS_ERR(gen->regmap)) { 140 dev_err(dev, "regmap error %ld\n", PTR_ERR(gen->regmap)); 141 return PTR_ERR(gen->regmap); 142 } 143 144 for (i = 0; i < RSND_REG_MAX; i++) { 145 gen->regs[i] = NULL; 146 if (!regf[i].reg) 147 continue; 148 149 gen->regs[i] = devm_regmap_field_alloc(dev, gen->regmap, regf[i]); 150 if (IS_ERR(gen->regs[i])) 151 return PTR_ERR(gen->regs[i]); 152 153 } 154 155 return 0; 156 } 157 158 int rsnd_gen_path_init(struct rsnd_priv *priv, 159 struct rsnd_dai *rdai, 160 struct rsnd_dai_stream *io) 161 { 162 struct rsnd_mod *mod; 163 int ret; 164 int id; 165 166 /* 167 * Gen1 is created by SRU/SSI, and this SRU is base module of 168 * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU) 169 * 170 * Easy image is.. 171 * Gen1 SRU = Gen2 SCU + SSIU + etc 172 * 173 * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is 174 * using fixed path. 175 * 176 * Then, SSI id = SCU id here 177 */ 178 179 /* get SSI's ID */ 180 mod = rsnd_ssi_mod_get_frm_dai(priv, 181 rsnd_dai_id(priv, rdai), 182 rsnd_dai_is_play(rdai, io)); 183 id = rsnd_mod_id(mod); 184 185 /* SSI */ 186 mod = rsnd_ssi_mod_get(priv, id); 187 ret = rsnd_dai_connect(rdai, mod, io); 188 if (ret < 0) 189 return ret; 190 191 /* SCU */ 192 mod = rsnd_scu_mod_get(priv, id); 193 ret = rsnd_dai_connect(rdai, mod, io); 194 195 return ret; 196 } 197 198 int rsnd_gen_path_exit(struct rsnd_priv *priv, 199 struct rsnd_dai *rdai, 200 struct rsnd_dai_stream *io) 201 { 202 struct rsnd_mod *mod, *n; 203 int ret = 0; 204 205 /* 206 * remove all mod from rdai 207 */ 208 for_each_rsnd_mod(mod, n, io) 209 ret |= rsnd_dai_disconnect(mod); 210 211 return ret; 212 } 213 214 /* 215 * Gen2 216 */ 217 218 /* single address mapping */ 219 #define RSND_GEN2_S_REG(gen, reg, id, offset) \ 220 RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN2_##reg, offset, 0, 10) 221 222 /* multi address mapping */ 223 #define RSND_GEN2_M_REG(gen, reg, id, offset, _id_offset) \ 224 RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN2_##reg, offset, _id_offset, 10) 225 226 static int rsnd_gen2_regmap_init(struct rsnd_priv *priv, struct rsnd_gen *gen) 227 { 228 struct reg_field regf[RSND_REG_MAX] = { 229 RSND_GEN2_S_REG(gen, SSIU, SSI_MODE0, 0x800), 230 RSND_GEN2_S_REG(gen, SSIU, SSI_MODE1, 0x804), 231 /* FIXME: it needs SSI_MODE2/3 in the future */ 232 RSND_GEN2_M_REG(gen, SSIU, INT_ENABLE, 0x18, 0x80), 233 234 RSND_GEN2_S_REG(gen, ADG, BRRA, 0x00), 235 RSND_GEN2_S_REG(gen, ADG, BRRB, 0x04), 236 RSND_GEN2_S_REG(gen, ADG, SSICKR, 0x08), 237 RSND_GEN2_S_REG(gen, ADG, AUDIO_CLK_SEL0, 0x0c), 238 RSND_GEN2_S_REG(gen, ADG, AUDIO_CLK_SEL1, 0x10), 239 RSND_GEN2_S_REG(gen, ADG, AUDIO_CLK_SEL2, 0x14), 240 241 RSND_GEN2_M_REG(gen, SSI, SSICR, 0x00, 0x40), 242 RSND_GEN2_M_REG(gen, SSI, SSISR, 0x04, 0x40), 243 RSND_GEN2_M_REG(gen, SSI, SSITDR, 0x08, 0x40), 244 RSND_GEN2_M_REG(gen, SSI, SSIRDR, 0x0c, 0x40), 245 RSND_GEN2_M_REG(gen, SSI, SSIWSR, 0x20, 0x40), 246 }; 247 248 return rsnd_gen_regmap_init(priv, gen, regf); 249 } 250 251 static int rsnd_gen2_probe(struct platform_device *pdev, 252 struct rcar_snd_info *info, 253 struct rsnd_priv *priv) 254 { 255 struct device *dev = rsnd_priv_to_dev(priv); 256 struct rsnd_gen *gen = rsnd_priv_to_gen(priv); 257 struct resource *scu_res; 258 struct resource *adg_res; 259 struct resource *ssiu_res; 260 struct resource *ssi_res; 261 int ret; 262 263 /* 264 * map address 265 */ 266 scu_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN2_SCU); 267 adg_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN2_ADG); 268 ssiu_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN2_SSIU); 269 ssi_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN2_SSI); 270 271 gen->base[RSND_GEN2_SCU] = devm_ioremap_resource(dev, scu_res); 272 gen->base[RSND_GEN2_ADG] = devm_ioremap_resource(dev, adg_res); 273 gen->base[RSND_GEN2_SSIU] = devm_ioremap_resource(dev, ssiu_res); 274 gen->base[RSND_GEN2_SSI] = devm_ioremap_resource(dev, ssi_res); 275 if (IS_ERR(gen->base[RSND_GEN2_SCU]) || 276 IS_ERR(gen->base[RSND_GEN2_ADG]) || 277 IS_ERR(gen->base[RSND_GEN2_SSIU]) || 278 IS_ERR(gen->base[RSND_GEN2_SSI])) 279 return -ENODEV; 280 281 ret = rsnd_gen2_regmap_init(priv, gen); 282 if (ret < 0) 283 return ret; 284 285 dev_dbg(dev, "Gen2 device probed\n"); 286 dev_dbg(dev, "SRU : %08x => %p\n", scu_res->start, 287 gen->base[RSND_GEN2_SCU]); 288 dev_dbg(dev, "ADG : %08x => %p\n", adg_res->start, 289 gen->base[RSND_GEN2_ADG]); 290 dev_dbg(dev, "SSIU : %08x => %p\n", ssiu_res->start, 291 gen->base[RSND_GEN2_SSIU]); 292 dev_dbg(dev, "SSI : %08x => %p\n", ssi_res->start, 293 gen->base[RSND_GEN2_SSI]); 294 295 return 0; 296 } 297 298 /* 299 * Gen1 300 */ 301 302 /* single address mapping */ 303 #define RSND_GEN1_S_REG(gen, reg, id, offset) \ 304 RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN1_##reg, offset, 0, 9) 305 306 /* multi address mapping */ 307 #define RSND_GEN1_M_REG(gen, reg, id, offset, _id_offset) \ 308 RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN1_##reg, offset, _id_offset, 9) 309 310 static int rsnd_gen1_regmap_init(struct rsnd_priv *priv, struct rsnd_gen *gen) 311 { 312 struct reg_field regf[RSND_REG_MAX] = { 313 RSND_GEN1_S_REG(gen, SRU, SRC_ROUTE_SEL, 0x00), 314 RSND_GEN1_S_REG(gen, SRU, SRC_TMG_SEL0, 0x08), 315 RSND_GEN1_S_REG(gen, SRU, SRC_TMG_SEL1, 0x0c), 316 RSND_GEN1_S_REG(gen, SRU, SRC_TMG_SEL2, 0x10), 317 RSND_GEN1_S_REG(gen, SRU, SRC_ROUTE_CTRL, 0xc0), 318 RSND_GEN1_S_REG(gen, SRU, SSI_MODE0, 0xD0), 319 RSND_GEN1_S_REG(gen, SRU, SSI_MODE1, 0xD4), 320 RSND_GEN1_M_REG(gen, SRU, BUSIF_MODE, 0x20, 0x4), 321 RSND_GEN1_M_REG(gen, SRU, SRC_ROUTE_MODE0,0x50, 0x8), 322 RSND_GEN1_M_REG(gen, SRU, SRC_SWRSR, 0x200, 0x40), 323 RSND_GEN1_M_REG(gen, SRU, SRC_SRCIR, 0x204, 0x40), 324 RSND_GEN1_M_REG(gen, SRU, SRC_ADINR, 0x214, 0x40), 325 RSND_GEN1_M_REG(gen, SRU, SRC_IFSCR, 0x21c, 0x40), 326 RSND_GEN1_M_REG(gen, SRU, SRC_IFSVR, 0x220, 0x40), 327 RSND_GEN1_M_REG(gen, SRU, SRC_SRCCR, 0x224, 0x40), 328 RSND_GEN1_M_REG(gen, SRU, SRC_MNFSR, 0x228, 0x40), 329 330 RSND_GEN1_S_REG(gen, ADG, BRRA, 0x00), 331 RSND_GEN1_S_REG(gen, ADG, BRRB, 0x04), 332 RSND_GEN1_S_REG(gen, ADG, SSICKR, 0x08), 333 RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL0, 0x0c), 334 RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL1, 0x10), 335 RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL3, 0x18), 336 RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL4, 0x1c), 337 RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL5, 0x20), 338 339 RSND_GEN1_M_REG(gen, SSI, SSICR, 0x00, 0x40), 340 RSND_GEN1_M_REG(gen, SSI, SSISR, 0x04, 0x40), 341 RSND_GEN1_M_REG(gen, SSI, SSITDR, 0x08, 0x40), 342 RSND_GEN1_M_REG(gen, SSI, SSIRDR, 0x0c, 0x40), 343 RSND_GEN1_M_REG(gen, SSI, SSIWSR, 0x20, 0x40), 344 }; 345 346 return rsnd_gen_regmap_init(priv, gen, regf); 347 } 348 349 static int rsnd_gen1_probe(struct platform_device *pdev, 350 struct rcar_snd_info *info, 351 struct rsnd_priv *priv) 352 { 353 struct device *dev = rsnd_priv_to_dev(priv); 354 struct rsnd_gen *gen = rsnd_priv_to_gen(priv); 355 struct resource *sru_res; 356 struct resource *adg_res; 357 struct resource *ssi_res; 358 int ret; 359 360 /* 361 * map address 362 */ 363 sru_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SRU); 364 adg_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_ADG); 365 ssi_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SSI); 366 367 gen->base[RSND_GEN1_SRU] = devm_ioremap_resource(dev, sru_res); 368 gen->base[RSND_GEN1_ADG] = devm_ioremap_resource(dev, adg_res); 369 gen->base[RSND_GEN1_SSI] = devm_ioremap_resource(dev, ssi_res); 370 if (IS_ERR(gen->base[RSND_GEN1_SRU]) || 371 IS_ERR(gen->base[RSND_GEN1_ADG]) || 372 IS_ERR(gen->base[RSND_GEN1_SSI])) 373 return -ENODEV; 374 375 ret = rsnd_gen1_regmap_init(priv, gen); 376 if (ret < 0) 377 return ret; 378 379 dev_dbg(dev, "Gen1 device probed\n"); 380 dev_dbg(dev, "SRU : %08x => %p\n", sru_res->start, 381 gen->base[RSND_GEN1_SRU]); 382 dev_dbg(dev, "ADG : %08x => %p\n", adg_res->start, 383 gen->base[RSND_GEN1_ADG]); 384 dev_dbg(dev, "SSI : %08x => %p\n", ssi_res->start, 385 gen->base[RSND_GEN1_SSI]); 386 387 return 0; 388 389 } 390 391 /* 392 * Gen 393 */ 394 int rsnd_gen_probe(struct platform_device *pdev, 395 struct rcar_snd_info *info, 396 struct rsnd_priv *priv) 397 { 398 struct device *dev = rsnd_priv_to_dev(priv); 399 struct rsnd_gen *gen; 400 int ret; 401 402 gen = devm_kzalloc(dev, sizeof(*gen), GFP_KERNEL); 403 if (!gen) { 404 dev_err(dev, "GEN allocate failed\n"); 405 return -ENOMEM; 406 } 407 408 priv->gen = gen; 409 410 ret = -ENODEV; 411 if (rsnd_is_gen1(priv)) 412 ret = rsnd_gen1_probe(pdev, info, priv); 413 else if (rsnd_is_gen2(priv)) 414 ret = rsnd_gen2_probe(pdev, info, priv); 415 416 if (ret < 0) 417 dev_err(dev, "unknown generation R-Car sound device\n"); 418 419 return ret; 420 } 421 422 void rsnd_gen_remove(struct platform_device *pdev, 423 struct rsnd_priv *priv) 424 { 425 } 426