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