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         const char *reg_name[RSND_REG_MAX];
  35 };
  36
  37 #define rsnd_priv_to_gen(p)     ((struct rsnd_gen *)(p)->gen)
  38 #define rsnd_reg_name(gen, id)  ((gen)->reg_name[id])
  39
  40 struct rsnd_regmap_field_conf {
  41         int idx;
  42         unsigned int reg_offset;
  43         unsigned int id_offset;
  44         const char *reg_name;
  45 };
  46
  47 #define RSND_REG_SET(id, offset, _id_offset, n) \
  48 {                                               \
  49         .idx = id,                              \
  50         .reg_offset = offset,                   \
  51         .id_offset = _id_offset,                \
  52         .reg_name = n,                          \
  53 }
  54 /* single address mapping */
  55 #define RSND_GEN_S_REG(id, offset)      \
  56         RSND_REG_SET(RSND_REG_##id, offset, 0, #id)
  57
  58 /* multi address mapping */
  59 #define RSND_GEN_M_REG(id, offset, _id_offset)  \
  60         RSND_REG_SET(RSND_REG_##id, offset, _id_offset, #id)
  61
  62 /*
  63  *              basic function
  64  */
  65 static int rsnd_is_accessible_reg(struct rsnd_priv *priv,
  66                                   struct rsnd_gen *gen, enum rsnd_reg reg)
  67 {
  68         if (!gen->regs[reg]) {
  69                 struct device *dev = rsnd_priv_to_dev(priv);
  70
  71                 dev_err(dev, "unsupported register access %x\n", reg);
  72                 return 0;
  73         }
  74
  75         return 1;
  76 }
  77
  78 u32 rsnd_read(struct rsnd_priv *priv,
  79               struct rsnd_mod *mod, enum rsnd_reg reg)
  80 {
  81         struct device *dev = rsnd_priv_to_dev(priv);
  82         struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
  83         u32 val;
  84
  85         if (!rsnd_is_accessible_reg(priv, gen, reg))
  86                 return 0;
  87
  88         regmap_fields_read(gen->regs[reg], rsnd_mod_id(mod), &val);
  89
  90         dev_dbg(dev, "r %s[%d] - %-18s (%4d) : %08x\n",
  91                 rsnd_mod_name(mod), rsnd_mod_id(mod),
  92                 rsnd_reg_name(gen, reg), reg, val);
  93
  94         return val;
  95 }
  96
  97 void rsnd_write(struct rsnd_priv *priv,
  98                 struct rsnd_mod *mod,
  99                 enum rsnd_reg reg, u32 data)
 100 {
 101         struct device *dev = rsnd_priv_to_dev(priv);
 102         struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
 103
 104         if (!rsnd_is_accessible_reg(priv, gen, reg))
 105                 return;
 106
 107         regmap_fields_write(gen->regs[reg], rsnd_mod_id(mod), data);
 108
 109         dev_dbg(dev, "w %s[%d] - %-18s (%4d) : %08x\n",
 110                 rsnd_mod_name(mod), rsnd_mod_id(mod),
 111                 rsnd_reg_name(gen, reg), reg, data);
 112 }
 113
 114 void rsnd_force_write(struct rsnd_priv *priv,
 115                       struct rsnd_mod *mod,
 116                       enum rsnd_reg reg, u32 data)
 117 {
 118         struct device *dev = rsnd_priv_to_dev(priv);
 119         struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
 120
 121         if (!rsnd_is_accessible_reg(priv, gen, reg))
 122                 return;
 123
 124         regmap_fields_force_write(gen->regs[reg], rsnd_mod_id(mod), data);
 125
 126         dev_dbg(dev, "w %s[%d] - %-18s (%4d) : %08x\n",
 127                 rsnd_mod_name(mod), rsnd_mod_id(mod),
 128                 rsnd_reg_name(gen, reg), reg, data);
 129 }
 130
 131 void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod,
 132                enum rsnd_reg reg, u32 mask, u32 data)
 133 {
 134         struct device *dev = rsnd_priv_to_dev(priv);
 135         struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
 136
 137         if (!rsnd_is_accessible_reg(priv, gen, reg))
 138                 return;
 139
 140         regmap_fields_update_bits(gen->regs[reg], rsnd_mod_id(mod),
 141                                   mask, data);
 142
 143         dev_dbg(dev, "b %s[%d] - %-18s (%4d) : %08x/%08x\n",
 144                 rsnd_mod_name(mod), rsnd_mod_id(mod),
 145                 rsnd_reg_name(gen, reg), reg, data, mask);
 146
 147 }
 148
 149 phys_addr_t rsnd_gen_get_phy_addr(struct rsnd_priv *priv, int reg_id)
 150 {
 151         struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
 152
 153         return  gen->res[reg_id];
 154 }
 155
 156 #define rsnd_gen_regmap_init(priv, id_size, reg_id, name, conf)         \
 157         _rsnd_gen_regmap_init(priv, id_size, reg_id, name, conf, ARRAY_SIZE(conf))
 158 static int _rsnd_gen_regmap_init(struct rsnd_priv *priv,
 159                                  int id_size,
 160                                  int reg_id,
 161                                  const char *name,
 162                                  const struct rsnd_regmap_field_conf *conf,
 163                                  int conf_size)
 164 {
 165         struct platform_device *pdev = rsnd_priv_to_pdev(priv);
 166         struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
 167         struct device *dev = rsnd_priv_to_dev(priv);
 168         struct resource *res;
 169         struct regmap_config regc;
 170         struct regmap_field *regs;
 171         struct regmap *regmap;
 172         struct reg_field regf;
 173         void __iomem *base;
 174         int i;
 175
 176         memset(&regc, 0, sizeof(regc));
 177         regc.reg_bits = 32;
 178         regc.val_bits = 32;
 179         regc.reg_stride = 4;
 180         regc.name = name;
 181
 182         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
 183         if (!res)
 184                 res = platform_get_resource(pdev, IORESOURCE_MEM, reg_id);
 185         if (!res)
 186                 return -ENODEV;
 187
 188         base = devm_ioremap_resource(dev, res);
 189         if (IS_ERR(base))
 190                 return PTR_ERR(base);
 191
 192         regmap = devm_regmap_init_mmio(dev, base, &regc);
 193         if (IS_ERR(regmap))
 194                 return PTR_ERR(regmap);
 195
 196         /* RSND_BASE_MAX base */
 197         gen->base[reg_id] = base;
 198         gen->regmap[reg_id] = regmap;
 199         gen->res[reg_id] = res->start;
 200
 201         for (i = 0; i < conf_size; i++) {
 202
 203                 regf.reg        = conf[i].reg_offset;
 204                 regf.id_offset  = conf[i].id_offset;
 205                 regf.lsb        = 0;
 206                 regf.msb        = 31;
 207                 regf.id_size    = id_size;
 208
 209                 regs = devm_regmap_field_alloc(dev, regmap, regf);
 210                 if (IS_ERR(regs))
 211                         return PTR_ERR(regs);
 212
 213                 /* RSND_REG_MAX base */
 214                 gen->regs[conf[i].idx] = regs;
 215                 gen->reg_name[conf[i].idx] = conf[i].reg_name;
 216         }
 217
 218         return 0;
 219 }
 220
 221 /*
 222  *              Gen2
 223  */
 224 static int rsnd_gen2_probe(struct rsnd_priv *priv)
 225 {
 226         const static struct rsnd_regmap_field_conf conf_ssiu[] = {
 227                 RSND_GEN_S_REG(SSI_MODE0,       0x800),
 228                 RSND_GEN_S_REG(SSI_MODE1,       0x804),
 229                 RSND_GEN_S_REG(SSI_MODE2,       0x808),
 230                 RSND_GEN_S_REG(SSI_CONTROL,     0x810),
 231
 232                 /* FIXME: it needs SSI_MODE2/3 in the future */
 233                 RSND_GEN_M_REG(SSI_BUSIF_MODE,  0x0,    0x80),
 234                 RSND_GEN_M_REG(SSI_BUSIF_ADINR, 0x4,    0x80),
 235                 RSND_GEN_M_REG(SSI_BUSIF_DALIGN,0x8,    0x80),
 236                 RSND_GEN_M_REG(SSI_MODE,        0xc,    0x80),
 237                 RSND_GEN_M_REG(SSI_CTRL,        0x10,   0x80),
 238                 RSND_GEN_M_REG(SSI_INT_ENABLE,  0x18,   0x80),
 239         };
 240
 241         const static struct rsnd_regmap_field_conf conf_scu[] = {
 242                 RSND_GEN_M_REG(SRC_I_BUSIF_MODE,0x0,    0x20),
 243                 RSND_GEN_M_REG(SRC_O_BUSIF_MODE,0x4,    0x20),
 244                 RSND_GEN_M_REG(SRC_BUSIF_DALIGN,0x8,    0x20),
 245                 RSND_GEN_M_REG(SRC_ROUTE_MODE0, 0xc,    0x20),
 246                 RSND_GEN_M_REG(SRC_CTRL,        0x10,   0x20),
 247                 RSND_GEN_M_REG(SRC_INT_ENABLE0, 0x18,   0x20),
 248                 RSND_GEN_M_REG(CMD_BUSIF_DALIGN,0x188,  0x20),
 249                 RSND_GEN_M_REG(CMD_ROUTE_SLCT,  0x18c,  0x20),
 250                 RSND_GEN_M_REG(CMD_CTRL,        0x190,  0x20),
 251                 RSND_GEN_S_REG(SCU_SYS_STATUS0, 0x1c8),
 252                 RSND_GEN_S_REG(SCU_SYS_INT_EN0, 0x1cc),
 253                 RSND_GEN_S_REG(SCU_SYS_STATUS1, 0x1d0),
 254                 RSND_GEN_S_REG(SCU_SYS_INT_EN1, 0x1c4),
 255                 RSND_GEN_M_REG(SRC_SWRSR,       0x200,  0x40),
 256                 RSND_GEN_M_REG(SRC_SRCIR,       0x204,  0x40),
 257                 RSND_GEN_M_REG(SRC_ADINR,       0x214,  0x40),
 258                 RSND_GEN_M_REG(SRC_IFSCR,       0x21c,  0x40),
 259                 RSND_GEN_M_REG(SRC_IFSVR,       0x220,  0x40),
 260                 RSND_GEN_M_REG(SRC_SRCCR,       0x224,  0x40),
 261                 RSND_GEN_M_REG(SRC_BSDSR,       0x22c,  0x40),
 262                 RSND_GEN_M_REG(SRC_BSISR,       0x238,  0x40),
 263                 RSND_GEN_M_REG(CTU_CTUIR,       0x504,  0x100),
 264                 RSND_GEN_M_REG(CTU_ADINR,       0x508,  0x100),
 265                 RSND_GEN_M_REG(MIX_SWRSR,       0xd00,  0x40),
 266                 RSND_GEN_M_REG(MIX_MIXIR,       0xd04,  0x40),
 267                 RSND_GEN_M_REG(MIX_ADINR,       0xd08,  0x40),
 268                 RSND_GEN_M_REG(MIX_MIXMR,       0xd10,  0x40),
 269                 RSND_GEN_M_REG(MIX_MVPDR,       0xd14,  0x40),
 270                 RSND_GEN_M_REG(MIX_MDBAR,       0xd18,  0x40),
 271                 RSND_GEN_M_REG(MIX_MDBBR,       0xd1c,  0x40),
 272                 RSND_GEN_M_REG(MIX_MDBCR,       0xd20,  0x40),
 273                 RSND_GEN_M_REG(MIX_MDBDR,       0xd24,  0x40),
 274                 RSND_GEN_M_REG(MIX_MDBER,       0xd28,  0x40),
 275                 RSND_GEN_M_REG(DVC_SWRSR,       0xe00,  0x100),
 276                 RSND_GEN_M_REG(DVC_DVUIR,       0xe04,  0x100),
 277                 RSND_GEN_M_REG(DVC_ADINR,       0xe08,  0x100),
 278                 RSND_GEN_M_REG(DVC_DVUCR,       0xe10,  0x100),
 279                 RSND_GEN_M_REG(DVC_ZCMCR,       0xe14,  0x100),
 280                 RSND_GEN_M_REG(DVC_VRCTR,       0xe18,  0x100),
 281                 RSND_GEN_M_REG(DVC_VRPDR,       0xe1c,  0x100),
 282                 RSND_GEN_M_REG(DVC_VRDBR,       0xe20,  0x100),
 283                 RSND_GEN_M_REG(DVC_VOL0R,       0xe28,  0x100),
 284                 RSND_GEN_M_REG(DVC_VOL1R,       0xe2c,  0x100),
 285                 RSND_GEN_M_REG(DVC_VOL2R,       0xe30,  0x100),
 286                 RSND_GEN_M_REG(DVC_VOL3R,       0xe34,  0x100),
 287                 RSND_GEN_M_REG(DVC_VOL4R,       0xe38,  0x100),
 288                 RSND_GEN_M_REG(DVC_VOL5R,       0xe3c,  0x100),
 289                 RSND_GEN_M_REG(DVC_VOL6R,       0xe40,  0x100),
 290                 RSND_GEN_M_REG(DVC_VOL7R,       0xe44,  0x100),
 291                 RSND_GEN_M_REG(DVC_DVUER,       0xe48,  0x100),
 292         };
 293         const static struct rsnd_regmap_field_conf conf_adg[] = {
 294                 RSND_GEN_S_REG(BRRA,            0x00),
 295                 RSND_GEN_S_REG(BRRB,            0x04),
 296                 RSND_GEN_S_REG(SSICKR,          0x08),
 297                 RSND_GEN_S_REG(AUDIO_CLK_SEL0,  0x0c),
 298                 RSND_GEN_S_REG(AUDIO_CLK_SEL1,  0x10),
 299                 RSND_GEN_S_REG(AUDIO_CLK_SEL2,  0x14),
 300                 RSND_GEN_S_REG(DIV_EN,          0x30),
 301                 RSND_GEN_S_REG(SRCIN_TIMSEL0,   0x34),
 302                 RSND_GEN_S_REG(SRCIN_TIMSEL1,   0x38),
 303                 RSND_GEN_S_REG(SRCIN_TIMSEL2,   0x3c),
 304                 RSND_GEN_S_REG(SRCIN_TIMSEL3,   0x40),
 305                 RSND_GEN_S_REG(SRCIN_TIMSEL4,   0x44),
 306                 RSND_GEN_S_REG(SRCOUT_TIMSEL0,  0x48),
 307                 RSND_GEN_S_REG(SRCOUT_TIMSEL1,  0x4c),
 308                 RSND_GEN_S_REG(SRCOUT_TIMSEL2,  0x50),
 309                 RSND_GEN_S_REG(SRCOUT_TIMSEL3,  0x54),
 310                 RSND_GEN_S_REG(SRCOUT_TIMSEL4,  0x58),
 311                 RSND_GEN_S_REG(CMDOUT_TIMSEL,   0x5c),
 312         };
 313         const static struct rsnd_regmap_field_conf conf_ssi[] = {
 314                 RSND_GEN_M_REG(SSICR,           0x00,   0x40),
 315                 RSND_GEN_M_REG(SSISR,           0x04,   0x40),
 316                 RSND_GEN_M_REG(SSITDR,          0x08,   0x40),
 317                 RSND_GEN_M_REG(SSIRDR,          0x0c,   0x40),
 318                 RSND_GEN_M_REG(SSIWSR,          0x20,   0x40),
 319         };
 320         int ret_ssiu;
 321         int ret_scu;
 322         int ret_adg;
 323         int ret_ssi;
 324
 325         ret_ssiu = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SSIU, "ssiu", conf_ssiu);
 326         ret_scu  = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SCU,  "scu",  conf_scu);
 327         ret_adg  = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_ADG,  "adg",  conf_adg);
 328         ret_ssi  = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SSI,  "ssi",  conf_ssi);
 329         if (ret_ssiu < 0 ||
 330             ret_scu  < 0 ||
 331             ret_adg  < 0 ||
 332             ret_ssi  < 0)
 333                 return ret_ssiu | ret_scu | ret_adg | ret_ssi;
 334
 335         return 0;
 336 }
 337
 338 /*
 339  *              Gen1
 340  */
 341
 342 static int rsnd_gen1_probe(struct rsnd_priv *priv)
 343 {
 344         const static struct rsnd_regmap_field_conf conf_adg[] = {
 345                 RSND_GEN_S_REG(BRRA,            0x00),
 346                 RSND_GEN_S_REG(BRRB,            0x04),
 347                 RSND_GEN_S_REG(SSICKR,          0x08),
 348                 RSND_GEN_S_REG(AUDIO_CLK_SEL0,  0x0c),
 349                 RSND_GEN_S_REG(AUDIO_CLK_SEL1,  0x10),
 350         };
 351         const static struct rsnd_regmap_field_conf conf_ssi[] = {
 352                 RSND_GEN_M_REG(SSICR,           0x00,   0x40),
 353                 RSND_GEN_M_REG(SSISR,           0x04,   0x40),
 354                 RSND_GEN_M_REG(SSITDR,          0x08,   0x40),
 355                 RSND_GEN_M_REG(SSIRDR,          0x0c,   0x40),
 356                 RSND_GEN_M_REG(SSIWSR,          0x20,   0x40),
 357         };
 358         int ret_adg;
 359         int ret_ssi;
 360
 361         ret_adg  = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_ADG, "adg", conf_adg);
 362         ret_ssi  = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_SSI, "ssi", conf_ssi);
 363         if (ret_adg  < 0 ||
 364             ret_ssi  < 0)
 365                 return ret_adg | ret_ssi;
 366
 367         return 0;
 368 }
 369
 370 /*
 371  *              Gen
 372  */
 373 int rsnd_gen_probe(struct rsnd_priv *priv)
 374 {
 375         struct device *dev = rsnd_priv_to_dev(priv);
 376         struct rsnd_gen *gen;
 377         int ret;
 378
 379         gen = devm_kzalloc(dev, sizeof(*gen), GFP_KERNEL);
 380         if (!gen) {
 381                 dev_err(dev, "GEN allocate failed\n");
 382                 return -ENOMEM;
 383         }
 384
 385         priv->gen = gen;
 386
 387         ret = -ENODEV;
 388         if (rsnd_is_gen1(priv))
 389                 ret = rsnd_gen1_probe(priv);
 390         else if (rsnd_is_gen2(priv))
 391                 ret = rsnd_gen2_probe(priv);
 392
 393         if (ret < 0)
 394                 dev_err(dev, "unknown generation R-Car sound device\n");
 395
 396         return ret;
 397 }