sound/soc/sh/rcar/gen.c

   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
  12 /*
  13  * #define DEBUG
  14  *
  15  * you can also add below in
  16  * ${LINUX}/drivers/base/regmap/regmap.c
  17  * for regmap debug
  18  *
  19  * #define LOG_DEVICE "xxxx.rcar_sound"
  20  */
  21
  22 #include "rsnd.h"
  23
  24 struct rsnd_gen {
  25         struct rsnd_gen_ops *ops;
  26
  27         /* RSND_BASE_MAX base */
  28         void __iomem *base[RSND_BASE_MAX];
  29         phys_addr_t res[RSND_BASE_MAX];
  30         struct regmap *regmap[RSND_BASE_MAX];
  31
  32         /* RSND_REG_MAX base */
  33         struct regmap_field *regs[RSND_REG_MAX];
  34 };
  35
  36 #define rsnd_priv_to_gen(p)     ((struct rsnd_gen *)(p)->gen)
  37
  38 struct rsnd_regmap_field_conf {
  39         int idx;
  40         unsigned int reg_offset;
  41         unsigned int id_offset;
  42 };
  43
  44 #define RSND_REG_SET(id, offset, _id_offset)    \
  45 {                                               \
  46         .idx = id,                              \
  47         .reg_offset = offset,                   \
  48         .id_offset = _id_offset,                \
  49 }
  50 /* single address mapping */
  51 #define RSND_GEN_S_REG(id, offset)      \
  52         RSND_REG_SET(RSND_REG_##id, offset, 0)
  53
  54 /* multi address mapping */
  55 #define RSND_GEN_M_REG(id, offset, _id_offset)  \
  56         RSND_REG_SET(RSND_REG_##id, offset, _id_offset)
  57
  58 /*
  59  *              basic function
  60  */
  61 static int rsnd_is_accessible_reg(struct rsnd_priv *priv,
  62                                   struct rsnd_gen *gen, enum rsnd_reg reg)
  63 {
  64         if (!gen->regs[reg]) {
  65                 struct device *dev = rsnd_priv_to_dev(priv);
  66
  67                 dev_err(dev, "unsupported register access %x\n", reg);
  68                 return 0;
  69         }
  70
  71         return 1;
  72 }
  73
  74 u32 rsnd_read(struct rsnd_priv *priv,
  75               struct rsnd_mod *mod, enum rsnd_reg reg)
  76 {
  77         struct device *dev = rsnd_priv_to_dev(priv);
  78         struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
  79         u32 val;
  80
  81         if (!rsnd_is_accessible_reg(priv, gen, reg))
  82                 return 0;
  83
  84         regmap_fields_read(gen->regs[reg], rsnd_mod_id(mod), &val);
  85
  86         dev_dbg(dev, "r %s[%d] - %4d : %08x\n",
  87                 rsnd_mod_name(mod), rsnd_mod_id(mod), reg, val);
  88
  89         return val;
  90 }
  91
  92 void rsnd_write(struct rsnd_priv *priv,
  93                 struct rsnd_mod *mod,
  94                 enum rsnd_reg reg, u32 data)
  95 {
  96         struct device *dev = rsnd_priv_to_dev(priv);
  97         struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
  98
  99         if (!rsnd_is_accessible_reg(priv, gen, reg))
 100                 return;
 101
 102         dev_dbg(dev, "w %s[%d] - %4d : %08x\n",
 103                 rsnd_mod_name(mod), rsnd_mod_id(mod), reg, data);
 104
 105         regmap_fields_write(gen->regs[reg], rsnd_mod_id(mod), data);
 106 }
 107
 108 void rsnd_force_write(struct rsnd_priv *priv,
 109                       struct rsnd_mod *mod,
 110                       enum rsnd_reg reg, u32 data)
 111 {
 112         struct device *dev = rsnd_priv_to_dev(priv);
 113         struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
 114
 115         if (!rsnd_is_accessible_reg(priv, gen, reg))
 116                 return;
 117
 118         dev_dbg(dev, "w %s[%d] - %4d : %08x\n",
 119                 rsnd_mod_name(mod), rsnd_mod_id(mod), reg, data);
 120
 121         regmap_fields_force_write(gen->regs[reg], rsnd_mod_id(mod), data);
 122 }
 123
 124 void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod,
 125                enum rsnd_reg reg, u32 mask, u32 data)
 126 {
 127         struct device *dev = rsnd_priv_to_dev(priv);
 128         struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
 129
 130         if (!rsnd_is_accessible_reg(priv, gen, reg))
 131                 return;
 132
 133         dev_dbg(dev, "b %s[%d] - %4d : %08x/%08x\n",
 134                 rsnd_mod_name(mod), rsnd_mod_id(mod), reg, data, mask);
 135
 136         regmap_fields_update_bits(gen->regs[reg], rsnd_mod_id(mod),
 137                                   mask, data);
 138 }
 139
 140 phys_addr_t rsnd_gen_get_phy_addr(struct rsnd_priv *priv, int reg_id)
 141 {
 142         struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
 143
 144         return  gen->res[reg_id];
 145 }
 146
 147 #define rsnd_gen_regmap_init(priv, id_size, reg_id, name, conf)         \
 148         _rsnd_gen_regmap_init(priv, id_size, reg_id, name, conf, ARRAY_SIZE(conf))
 149 static int _rsnd_gen_regmap_init(struct rsnd_priv *priv,
 150                                  int id_size,
 151                                  int reg_id,
 152                                  const char *name,
 153                                  struct rsnd_regmap_field_conf *conf,
 154                                  int conf_size)
 155 {
 156         struct platform_device *pdev = rsnd_priv_to_pdev(priv);
 157         struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
 158         struct device *dev = rsnd_priv_to_dev(priv);
 159         struct resource *res;
 160         struct regmap_config regc;
 161         struct regmap_field *regs;
 162         struct regmap *regmap;
 163         struct reg_field regf;
 164         void __iomem *base;
 165         int i;
 166
 167         memset(&regc, 0, sizeof(regc));
 168         regc.reg_bits = 32;
 169         regc.val_bits = 32;
 170         regc.reg_stride = 4;
 171         regc.name = name;
 172
 173         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
 174         if (!res)
 175                 res = platform_get_resource(pdev, IORESOURCE_MEM, reg_id);
 176         if (!res)
 177                 return -ENODEV;
 178
 179         base = devm_ioremap_resource(dev, res);
 180         if (IS_ERR(base))
 181                 return PTR_ERR(base);
 182
 183         regmap = devm_regmap_init_mmio(dev, base, &regc);
 184         if (IS_ERR(regmap))
 185                 return PTR_ERR(regmap);
 186
 187         /* RSND_BASE_MAX base */
 188         gen->base[reg_id] = base;
 189         gen->regmap[reg_id] = regmap;
 190         gen->res[reg_id] = res->start;
 191
 192         for (i = 0; i < conf_size; i++) {
 193
 194                 regf.reg        = conf[i].reg_offset;
 195                 regf.id_offset  = conf[i].id_offset;
 196                 regf.lsb        = 0;
 197                 regf.msb        = 31;
 198                 regf.id_size    = id_size;
 199
 200                 regs = devm_regmap_field_alloc(dev, regmap, regf);
 201                 if (IS_ERR(regs))
 202                         return PTR_ERR(regs);
 203
 204                 /* RSND_REG_MAX base */
 205                 gen->regs[conf[i].idx] = regs;
 206         }
 207
 208         return 0;
 209 }
 210
 211 /*
 212  *              Gen2
 213  */
 214 static int rsnd_gen2_probe(struct platform_device *pdev,
 215                            struct rsnd_priv *priv)
 216 {
 217         struct rsnd_regmap_field_conf conf_ssiu[] = {
 218                 RSND_GEN_S_REG(SSI_MODE0,       0x800),
 219                 RSND_GEN_S_REG(SSI_MODE1,       0x804),
 220                 /* FIXME: it needs SSI_MODE2/3 in the future */
 221                 RSND_GEN_M_REG(SSI_BUSIF_MODE,  0x0,    0x80),
 222                 RSND_GEN_M_REG(SSI_BUSIF_ADINR, 0x4,    0x80),
 223                 RSND_GEN_M_REG(SSI_BUSIF_DALIGN,0x8,    0x80),
 224                 RSND_GEN_M_REG(SSI_CTRL,        0x10,   0x80),
 225                 RSND_GEN_M_REG(SSI_INT_ENABLE,  0x18,   0x80),
 226         };
 227         struct rsnd_regmap_field_conf conf_scu[] = {
 228                 RSND_GEN_M_REG(SRC_BUSIF_MODE,  0x0,    0x20),
 229                 RSND_GEN_M_REG(SRC_BUSIF_DALIGN,0x8,    0x20),
 230                 RSND_GEN_M_REG(SRC_ROUTE_MODE0, 0xc,    0x20),
 231                 RSND_GEN_M_REG(SRC_CTRL,        0x10,   0x20),
 232                 RSND_GEN_M_REG(SRC_INT_ENABLE0, 0x18,   0x20),
 233                 RSND_GEN_M_REG(CMD_ROUTE_SLCT,  0x18c,  0x20),
 234                 RSND_GEN_M_REG(CMD_CTRL,        0x190,  0x20),
 235                 RSND_GEN_S_REG(SCU_SYS_STATUS0, 0x1c8),
 236                 RSND_GEN_S_REG(SCU_SYS_INT_EN0, 0x1cc),
 237                 RSND_GEN_S_REG(SCU_SYS_STATUS1, 0x1d0),
 238                 RSND_GEN_S_REG(SCU_SYS_INT_EN1, 0x1c4),
 239                 RSND_GEN_M_REG(SRC_SWRSR,       0x200,  0x40),
 240                 RSND_GEN_M_REG(SRC_SRCIR,       0x204,  0x40),
 241                 RSND_GEN_M_REG(SRC_ADINR,       0x214,  0x40),
 242                 RSND_GEN_M_REG(SRC_IFSCR,       0x21c,  0x40),
 243                 RSND_GEN_M_REG(SRC_IFSVR,       0x220,  0x40),
 244                 RSND_GEN_M_REG(SRC_SRCCR,       0x224,  0x40),
 245                 RSND_GEN_M_REG(SRC_BSDSR,       0x22c,  0x40),
 246                 RSND_GEN_M_REG(SRC_BSISR,       0x238,  0x40),
 247                 RSND_GEN_M_REG(CTU_CTUIR,       0x504,  0x100),
 248                 RSND_GEN_M_REG(CTU_ADINR,       0x508,  0x100),
 249                 RSND_GEN_M_REG(MIX_SWRSR,       0xd00,  0x40),
 250                 RSND_GEN_M_REG(MIX_MIXIR,       0xd04,  0x40),
 251                 RSND_GEN_M_REG(MIX_ADINR,       0xd08,  0x40),
 252                 RSND_GEN_M_REG(MIX_MIXMR,       0xd10,  0x40),
 253                 RSND_GEN_M_REG(MIX_MVPDR,       0xd14,  0x40),
 254                 RSND_GEN_M_REG(MIX_MDBAR,       0xd18,  0x40),
 255                 RSND_GEN_M_REG(MIX_MDBBR,       0xd1c,  0x40),
 256                 RSND_GEN_M_REG(MIX_MDBCR,       0xd20,  0x40),
 257                 RSND_GEN_M_REG(MIX_MDBDR,       0xd24,  0x40),
 258                 RSND_GEN_M_REG(MIX_MDBER,       0xd28,  0x40),
 259                 RSND_GEN_M_REG(DVC_SWRSR,       0xe00,  0x100),
 260                 RSND_GEN_M_REG(DVC_DVUIR,       0xe04,  0x100),
 261                 RSND_GEN_M_REG(DVC_ADINR,       0xe08,  0x100),
 262                 RSND_GEN_M_REG(DVC_DVUCR,       0xe10,  0x100),
 263                 RSND_GEN_M_REG(DVC_ZCMCR,       0xe14,  0x100),
 264                 RSND_GEN_M_REG(DVC_VRCTR,       0xe18,  0x100),
 265                 RSND_GEN_M_REG(DVC_VRPDR,       0xe1c,  0x100),
 266                 RSND_GEN_M_REG(DVC_VRDBR,       0xe20,  0x100),
 267                 RSND_GEN_M_REG(DVC_VOL0R,       0xe28,  0x100),
 268                 RSND_GEN_M_REG(DVC_VOL1R,       0xe2c,  0x100),
 269                 RSND_GEN_M_REG(DVC_DVUER,       0xe48,  0x100),
 270         };
 271         struct rsnd_regmap_field_conf conf_adg[] = {
 272                 RSND_GEN_S_REG(BRRA,            0x00),
 273                 RSND_GEN_S_REG(BRRB,            0x04),
 274                 RSND_GEN_S_REG(SSICKR,          0x08),
 275                 RSND_GEN_S_REG(AUDIO_CLK_SEL0,  0x0c),
 276                 RSND_GEN_S_REG(AUDIO_CLK_SEL1,  0x10),
 277                 RSND_GEN_S_REG(AUDIO_CLK_SEL2,  0x14),
 278                 RSND_GEN_S_REG(DIV_EN,          0x30),
 279                 RSND_GEN_S_REG(SRCIN_TIMSEL0,   0x34),
 280                 RSND_GEN_S_REG(SRCIN_TIMSEL1,   0x38),
 281                 RSND_GEN_S_REG(SRCIN_TIMSEL2,   0x3c),
 282                 RSND_GEN_S_REG(SRCIN_TIMSEL3,   0x40),
 283                 RSND_GEN_S_REG(SRCIN_TIMSEL4,   0x44),
 284                 RSND_GEN_S_REG(SRCOUT_TIMSEL0,  0x48),
 285                 RSND_GEN_S_REG(SRCOUT_TIMSEL1,  0x4c),
 286                 RSND_GEN_S_REG(SRCOUT_TIMSEL2,  0x50),
 287                 RSND_GEN_S_REG(SRCOUT_TIMSEL3,  0x54),
 288                 RSND_GEN_S_REG(SRCOUT_TIMSEL4,  0x58),
 289                 RSND_GEN_S_REG(CMDOUT_TIMSEL,   0x5c),
 290         };
 291         struct rsnd_regmap_field_conf conf_ssi[] = {
 292                 RSND_GEN_M_REG(SSICR,           0x00,   0x40),
 293                 RSND_GEN_M_REG(SSISR,           0x04,   0x40),
 294                 RSND_GEN_M_REG(SSITDR,          0x08,   0x40),
 295                 RSND_GEN_M_REG(SSIRDR,          0x0c,   0x40),
 296                 RSND_GEN_M_REG(SSIWSR,          0x20,   0x40),
 297         };
 298         int ret_ssiu;
 299         int ret_scu;
 300         int ret_adg;
 301         int ret_ssi;
 302
 303         ret_ssiu = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SSIU, "ssiu", conf_ssiu);
 304         ret_scu  = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SCU,  "scu",  conf_scu);
 305         ret_adg  = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_ADG,  "adg",  conf_adg);
 306         ret_ssi  = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SSI,  "ssi",  conf_ssi);
 307         if (ret_ssiu < 0 ||
 308             ret_scu  < 0 ||
 309             ret_adg  < 0 ||
 310             ret_ssi  < 0)
 311                 return ret_ssiu | ret_scu | ret_adg | ret_ssi;
 312
 313         return 0;
 314 }
 315
 316 /*
 317  *              Gen1
 318  */
 319
 320 static int rsnd_gen1_probe(struct platform_device *pdev,
 321                            struct rsnd_priv *priv)
 322 {
 323         struct rsnd_regmap_field_conf conf_sru[] = {
 324                 RSND_GEN_S_REG(SRC_ROUTE_SEL,   0x00),
 325                 RSND_GEN_S_REG(SRC_TMG_SEL0,    0x08),
 326                 RSND_GEN_S_REG(SRC_TMG_SEL1,    0x0c),
 327                 RSND_GEN_S_REG(SRC_TMG_SEL2,    0x10),
 328                 RSND_GEN_S_REG(SRC_ROUTE_CTRL,  0xc0),
 329                 RSND_GEN_S_REG(SSI_MODE0,       0xD0),
 330                 RSND_GEN_S_REG(SSI_MODE1,       0xD4),
 331                 RSND_GEN_M_REG(SRC_BUSIF_MODE,  0x20,   0x4),
 332                 RSND_GEN_M_REG(SRC_ROUTE_MODE0, 0x50,   0x8),
 333                 RSND_GEN_M_REG(SRC_SWRSR,       0x200,  0x40),
 334                 RSND_GEN_M_REG(SRC_SRCIR,       0x204,  0x40),
 335                 RSND_GEN_M_REG(SRC_ADINR,       0x214,  0x40),
 336                 RSND_GEN_M_REG(SRC_IFSCR,       0x21c,  0x40),
 337                 RSND_GEN_M_REG(SRC_IFSVR,       0x220,  0x40),
 338                 RSND_GEN_M_REG(SRC_SRCCR,       0x224,  0x40),
 339                 RSND_GEN_M_REG(SRC_MNFSR,       0x228,  0x40),
 340                 /*
 341                  * ADD US
 342                  *
 343                  * SRC_STATUS
 344                  * SRC_INT_EN
 345                  * SCU_SYS_STATUS0
 346                  * SCU_SYS_STATUS1
 347                  * SCU_SYS_INT_EN0
 348                  * SCU_SYS_INT_EN1
 349                  */
 350         };
 351         struct rsnd_regmap_field_conf conf_adg[] = {
 352                 RSND_GEN_S_REG(BRRA,            0x00),
 353                 RSND_GEN_S_REG(BRRB,            0x04),
 354                 RSND_GEN_S_REG(SSICKR,          0x08),
 355                 RSND_GEN_S_REG(AUDIO_CLK_SEL0,  0x0c),
 356                 RSND_GEN_S_REG(AUDIO_CLK_SEL1,  0x10),
 357                 RSND_GEN_S_REG(AUDIO_CLK_SEL3,  0x18),
 358                 RSND_GEN_S_REG(AUDIO_CLK_SEL4,  0x1c),
 359                 RSND_GEN_S_REG(AUDIO_CLK_SEL5,  0x20),
 360         };
 361         struct rsnd_regmap_field_conf conf_ssi[] = {
 362                 RSND_GEN_M_REG(SSICR,           0x00,   0x40),
 363                 RSND_GEN_M_REG(SSISR,           0x04,   0x40),
 364                 RSND_GEN_M_REG(SSITDR,          0x08,   0x40),
 365                 RSND_GEN_M_REG(SSIRDR,          0x0c,   0x40),
 366                 RSND_GEN_M_REG(SSIWSR,          0x20,   0x40),
 367         };
 368         int ret_sru;
 369         int ret_adg;
 370         int ret_ssi;
 371
 372         ret_sru  = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_SRU, "sru", conf_sru);
 373         ret_adg  = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_ADG, "adg", conf_adg);
 374         ret_ssi  = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_SSI, "ssi", conf_ssi);
 375         if (ret_sru  < 0 ||
 376             ret_adg  < 0 ||
 377             ret_ssi  < 0)
 378                 return ret_sru | ret_adg | ret_ssi;
 379
 380         return 0;
 381 }
 382
 383 /*
 384  *              Gen
 385  */
 386 static void rsnd_of_parse_gen(struct platform_device *pdev,
 387                               const struct rsnd_of_data *of_data,
 388                               struct rsnd_priv *priv)
 389 {
 390         struct rcar_snd_info *info = priv->info;
 391
 392         if (!of_data)
 393                 return;
 394
 395         info->flags = of_data->flags;
 396 }
 397
 398 int rsnd_gen_probe(struct platform_device *pdev,
 399                    const struct rsnd_of_data *of_data,
 400                    struct rsnd_priv *priv)
 401 {
 402         struct device *dev = rsnd_priv_to_dev(priv);
 403         struct rsnd_gen *gen;
 404         int ret;
 405
 406         rsnd_of_parse_gen(pdev, of_data, priv);
 407
 408         gen = devm_kzalloc(dev, sizeof(*gen), GFP_KERNEL);
 409         if (!gen) {
 410                 dev_err(dev, "GEN allocate failed\n");
 411                 return -ENOMEM;
 412         }
 413
 414         priv->gen = gen;
 415
 416         ret = -ENODEV;
 417         if (rsnd_is_gen1(priv))
 418                 ret = rsnd_gen1_probe(pdev, priv);
 419         else if (rsnd_is_gen2(priv))
 420                 ret = rsnd_gen2_probe(pdev, priv);
 421
 422         if (ret < 0)
 423                 dev_err(dev, "unknown generation R-Car sound device\n");
 424
 425         return ret;
 426 }