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 /* 159 * Gen2 160 */ 161 162 /* single address mapping */ 163 #define RSND_GEN2_S_REG(gen, reg, id, offset) \ 164 RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN2_##reg, offset, 0, 10) 165 166 /* multi address mapping */ 167 #define RSND_GEN2_M_REG(gen, reg, id, offset, _id_offset) \ 168 RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN2_##reg, offset, _id_offset, 10) 169 170 static int rsnd_gen2_regmap_init(struct rsnd_priv *priv, struct rsnd_gen *gen) 171 { 172 struct reg_field regf[RSND_REG_MAX] = { 173 RSND_GEN2_S_REG(gen, SSIU, SSI_MODE0, 0x800), 174 RSND_GEN2_S_REG(gen, SSIU, SSI_MODE1, 0x804), 175 /* FIXME: it needs SSI_MODE2/3 in the future */ 176 RSND_GEN2_M_REG(gen, SSIU, SSI_BUSIF_MODE, 0x0, 0x80), 177 RSND_GEN2_M_REG(gen, SSIU, SSI_BUSIF_ADINR,0x4, 0x80), 178 RSND_GEN2_M_REG(gen, SSIU, SSI_CTRL, 0x10, 0x80), 179 RSND_GEN2_M_REG(gen, SSIU, INT_ENABLE, 0x18, 0x80), 180 181 RSND_GEN2_M_REG(gen, SCU, SRC_BUSIF_MODE, 0x0, 0x20), 182 RSND_GEN2_M_REG(gen, SCU, SRC_ROUTE_MODE0,0xc, 0x20), 183 RSND_GEN2_M_REG(gen, SCU, SRC_CTRL, 0x10, 0x20), 184 RSND_GEN2_M_REG(gen, SCU, SRC_SWRSR, 0x200, 0x40), 185 RSND_GEN2_M_REG(gen, SCU, SRC_SRCIR, 0x204, 0x40), 186 RSND_GEN2_M_REG(gen, SCU, SRC_ADINR, 0x214, 0x40), 187 RSND_GEN2_M_REG(gen, SCU, SRC_IFSCR, 0x21c, 0x40), 188 RSND_GEN2_M_REG(gen, SCU, SRC_IFSVR, 0x220, 0x40), 189 RSND_GEN2_M_REG(gen, SCU, SRC_SRCCR, 0x224, 0x40), 190 RSND_GEN2_M_REG(gen, SCU, SRC_BSDSR, 0x22c, 0x40), 191 RSND_GEN2_M_REG(gen, SCU, SRC_BSISR, 0x238, 0x40), 192 193 RSND_GEN2_S_REG(gen, ADG, BRRA, 0x00), 194 RSND_GEN2_S_REG(gen, ADG, BRRB, 0x04), 195 RSND_GEN2_S_REG(gen, ADG, SSICKR, 0x08), 196 RSND_GEN2_S_REG(gen, ADG, AUDIO_CLK_SEL0, 0x0c), 197 RSND_GEN2_S_REG(gen, ADG, AUDIO_CLK_SEL1, 0x10), 198 RSND_GEN2_S_REG(gen, ADG, AUDIO_CLK_SEL2, 0x14), 199 RSND_GEN2_S_REG(gen, ADG, DIV_EN, 0x30), 200 RSND_GEN2_S_REG(gen, ADG, SRCIN_TIMSEL0, 0x34), 201 RSND_GEN2_S_REG(gen, ADG, SRCIN_TIMSEL1, 0x38), 202 RSND_GEN2_S_REG(gen, ADG, SRCIN_TIMSEL2, 0x3c), 203 RSND_GEN2_S_REG(gen, ADG, SRCIN_TIMSEL3, 0x40), 204 RSND_GEN2_S_REG(gen, ADG, SRCIN_TIMSEL4, 0x44), 205 RSND_GEN2_S_REG(gen, ADG, SRCOUT_TIMSEL0, 0x48), 206 RSND_GEN2_S_REG(gen, ADG, SRCOUT_TIMSEL1, 0x4c), 207 RSND_GEN2_S_REG(gen, ADG, SRCOUT_TIMSEL2, 0x50), 208 RSND_GEN2_S_REG(gen, ADG, SRCOUT_TIMSEL3, 0x54), 209 RSND_GEN2_S_REG(gen, ADG, SRCOUT_TIMSEL4, 0x58), 210 211 RSND_GEN2_M_REG(gen, SSI, SSICR, 0x00, 0x40), 212 RSND_GEN2_M_REG(gen, SSI, SSISR, 0x04, 0x40), 213 RSND_GEN2_M_REG(gen, SSI, SSITDR, 0x08, 0x40), 214 RSND_GEN2_M_REG(gen, SSI, SSIRDR, 0x0c, 0x40), 215 RSND_GEN2_M_REG(gen, SSI, SSIWSR, 0x20, 0x40), 216 }; 217 218 return rsnd_gen_regmap_init(priv, gen, regf); 219 } 220 221 static int rsnd_gen2_probe(struct platform_device *pdev, 222 struct rsnd_priv *priv) 223 { 224 struct device *dev = rsnd_priv_to_dev(priv); 225 struct rsnd_gen *gen = rsnd_priv_to_gen(priv); 226 struct resource *scu_res; 227 struct resource *adg_res; 228 struct resource *ssiu_res; 229 struct resource *ssi_res; 230 int ret; 231 232 /* 233 * map address 234 */ 235 scu_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN2_SCU); 236 adg_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN2_ADG); 237 ssiu_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN2_SSIU); 238 ssi_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN2_SSI); 239 240 gen->base[RSND_GEN2_SCU] = devm_ioremap_resource(dev, scu_res); 241 gen->base[RSND_GEN2_ADG] = devm_ioremap_resource(dev, adg_res); 242 gen->base[RSND_GEN2_SSIU] = devm_ioremap_resource(dev, ssiu_res); 243 gen->base[RSND_GEN2_SSI] = devm_ioremap_resource(dev, ssi_res); 244 if (IS_ERR(gen->base[RSND_GEN2_SCU]) || 245 IS_ERR(gen->base[RSND_GEN2_ADG]) || 246 IS_ERR(gen->base[RSND_GEN2_SSIU]) || 247 IS_ERR(gen->base[RSND_GEN2_SSI])) 248 return -ENODEV; 249 250 ret = rsnd_gen2_regmap_init(priv, gen); 251 if (ret < 0) 252 return ret; 253 254 dev_dbg(dev, "Gen2 device probed\n"); 255 dev_dbg(dev, "SCU : %08x => %p\n", scu_res->start, 256 gen->base[RSND_GEN2_SCU]); 257 dev_dbg(dev, "ADG : %08x => %p\n", adg_res->start, 258 gen->base[RSND_GEN2_ADG]); 259 dev_dbg(dev, "SSIU : %08x => %p\n", ssiu_res->start, 260 gen->base[RSND_GEN2_SSIU]); 261 dev_dbg(dev, "SSI : %08x => %p\n", ssi_res->start, 262 gen->base[RSND_GEN2_SSI]); 263 264 return 0; 265 } 266 267 /* 268 * Gen1 269 */ 270 271 /* single address mapping */ 272 #define RSND_GEN1_S_REG(gen, reg, id, offset) \ 273 RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN1_##reg, offset, 0, 9) 274 275 /* multi address mapping */ 276 #define RSND_GEN1_M_REG(gen, reg, id, offset, _id_offset) \ 277 RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN1_##reg, offset, _id_offset, 9) 278 279 static int rsnd_gen1_regmap_init(struct rsnd_priv *priv, struct rsnd_gen *gen) 280 { 281 struct reg_field regf[RSND_REG_MAX] = { 282 RSND_GEN1_S_REG(gen, SRU, SRC_ROUTE_SEL, 0x00), 283 RSND_GEN1_S_REG(gen, SRU, SRC_TMG_SEL0, 0x08), 284 RSND_GEN1_S_REG(gen, SRU, SRC_TMG_SEL1, 0x0c), 285 RSND_GEN1_S_REG(gen, SRU, SRC_TMG_SEL2, 0x10), 286 RSND_GEN1_S_REG(gen, SRU, SRC_ROUTE_CTRL, 0xc0), 287 RSND_GEN1_S_REG(gen, SRU, SSI_MODE0, 0xD0), 288 RSND_GEN1_S_REG(gen, SRU, SSI_MODE1, 0xD4), 289 RSND_GEN1_M_REG(gen, SRU, SRC_BUSIF_MODE, 0x20, 0x4), 290 RSND_GEN1_M_REG(gen, SRU, SRC_ROUTE_MODE0,0x50, 0x8), 291 RSND_GEN1_M_REG(gen, SRU, SRC_SWRSR, 0x200, 0x40), 292 RSND_GEN1_M_REG(gen, SRU, SRC_SRCIR, 0x204, 0x40), 293 RSND_GEN1_M_REG(gen, SRU, SRC_ADINR, 0x214, 0x40), 294 RSND_GEN1_M_REG(gen, SRU, SRC_IFSCR, 0x21c, 0x40), 295 RSND_GEN1_M_REG(gen, SRU, SRC_IFSVR, 0x220, 0x40), 296 RSND_GEN1_M_REG(gen, SRU, SRC_SRCCR, 0x224, 0x40), 297 RSND_GEN1_M_REG(gen, SRU, SRC_MNFSR, 0x228, 0x40), 298 299 RSND_GEN1_S_REG(gen, ADG, BRRA, 0x00), 300 RSND_GEN1_S_REG(gen, ADG, BRRB, 0x04), 301 RSND_GEN1_S_REG(gen, ADG, SSICKR, 0x08), 302 RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL0, 0x0c), 303 RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL1, 0x10), 304 RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL3, 0x18), 305 RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL4, 0x1c), 306 RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL5, 0x20), 307 308 RSND_GEN1_M_REG(gen, SSI, SSICR, 0x00, 0x40), 309 RSND_GEN1_M_REG(gen, SSI, SSISR, 0x04, 0x40), 310 RSND_GEN1_M_REG(gen, SSI, SSITDR, 0x08, 0x40), 311 RSND_GEN1_M_REG(gen, SSI, SSIRDR, 0x0c, 0x40), 312 RSND_GEN1_M_REG(gen, SSI, SSIWSR, 0x20, 0x40), 313 }; 314 315 return rsnd_gen_regmap_init(priv, gen, regf); 316 } 317 318 static int rsnd_gen1_probe(struct platform_device *pdev, 319 struct rsnd_priv *priv) 320 { 321 struct device *dev = rsnd_priv_to_dev(priv); 322 struct rsnd_gen *gen = rsnd_priv_to_gen(priv); 323 struct resource *sru_res; 324 struct resource *adg_res; 325 struct resource *ssi_res; 326 int ret; 327 328 /* 329 * map address 330 */ 331 sru_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SRU); 332 adg_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_ADG); 333 ssi_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SSI); 334 335 gen->base[RSND_GEN1_SRU] = devm_ioremap_resource(dev, sru_res); 336 gen->base[RSND_GEN1_ADG] = devm_ioremap_resource(dev, adg_res); 337 gen->base[RSND_GEN1_SSI] = devm_ioremap_resource(dev, ssi_res); 338 if (IS_ERR(gen->base[RSND_GEN1_SRU]) || 339 IS_ERR(gen->base[RSND_GEN1_ADG]) || 340 IS_ERR(gen->base[RSND_GEN1_SSI])) 341 return -ENODEV; 342 343 ret = rsnd_gen1_regmap_init(priv, gen); 344 if (ret < 0) 345 return ret; 346 347 dev_dbg(dev, "Gen1 device probed\n"); 348 dev_dbg(dev, "SRU : %08x => %p\n", sru_res->start, 349 gen->base[RSND_GEN1_SRU]); 350 dev_dbg(dev, "ADG : %08x => %p\n", adg_res->start, 351 gen->base[RSND_GEN1_ADG]); 352 dev_dbg(dev, "SSI : %08x => %p\n", ssi_res->start, 353 gen->base[RSND_GEN1_SSI]); 354 355 return 0; 356 357 } 358 359 /* 360 * Gen 361 */ 362 static void rsnd_of_parse_gen(struct platform_device *pdev, 363 const struct rsnd_of_data *of_data, 364 struct rsnd_priv *priv) 365 { 366 struct rcar_snd_info *info = priv->info; 367 368 if (!of_data) 369 return; 370 371 info->flags = of_data->flags; 372 } 373 374 int rsnd_gen_probe(struct platform_device *pdev, 375 const struct rsnd_of_data *of_data, 376 struct rsnd_priv *priv) 377 { 378 struct device *dev = rsnd_priv_to_dev(priv); 379 struct rsnd_gen *gen; 380 int ret; 381 382 rsnd_of_parse_gen(pdev, of_data, priv); 383 384 gen = devm_kzalloc(dev, sizeof(*gen), GFP_KERNEL); 385 if (!gen) { 386 dev_err(dev, "GEN allocate failed\n"); 387 return -ENOMEM; 388 } 389 390 priv->gen = gen; 391 392 ret = -ENODEV; 393 if (rsnd_is_gen1(priv)) 394 ret = rsnd_gen1_probe(pdev, priv); 395 else if (rsnd_is_gen2(priv)) 396 ret = rsnd_gen2_probe(pdev, priv); 397 398 if (ret < 0) 399 dev_err(dev, "unknown generation R-Car sound device\n"); 400 401 return ret; 402 } 403