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 #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[RSND_BASE_MAX];
  19         struct regmap_field *regs[RSND_REG_MAX];
  20 };
  21
  22 #define rsnd_priv_to_gen(p)     ((struct rsnd_gen *)(p)->gen)
  23
  24 struct rsnd_regmap_field_conf {
  25         int idx;
  26         unsigned int reg_offset;
  27         unsigned int id_offset;
  28 };
  29
  30 #define RSND_REG_SET(id, offset, _id_offset)    \
  31 {                                               \
  32         .idx = id,                              \
  33         .reg_offset = offset,                   \
  34         .id_offset = _id_offset,                \
  35 }
  36 /* single address mapping */
  37 #define RSND_GEN_S_REG(id, offset)      \
  38         RSND_REG_SET(RSND_REG_##id, offset, 0)
  39
  40 /* multi address mapping */
  41 #define RSND_GEN_M_REG(id, offset, _id_offset)  \
  42         RSND_REG_SET(RSND_REG_##id, offset, _id_offset)
  43
  44 /*
  45  *              basic function
  46  */
  47 static int rsnd_is_accessible_reg(struct rsnd_priv *priv,
  48                                   struct rsnd_gen *gen, enum rsnd_reg reg)
  49 {
  50         if (!gen->regs[reg]) {
  51                 struct device *dev = rsnd_priv_to_dev(priv);
  52
  53                 dev_err(dev, "unsupported register access %x\n", reg);
  54                 return 0;
  55         }
  56
  57         return 1;
  58 }
  59
  60 u32 rsnd_read(struct rsnd_priv *priv,
  61               struct rsnd_mod *mod, enum rsnd_reg reg)
  62 {
  63         struct device *dev = rsnd_priv_to_dev(priv);
  64         struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
  65         u32 val;
  66
  67         if (!rsnd_is_accessible_reg(priv, gen, reg))
  68                 return 0;
  69
  70         regmap_fields_read(gen->regs[reg], rsnd_mod_id(mod), &val);
  71
  72         dev_dbg(dev, "r %s - 0x%04d : %08x\n", rsnd_mod_name(mod), reg, val);
  73
  74         return val;
  75 }
  76
  77 void rsnd_write(struct rsnd_priv *priv,
  78                 struct rsnd_mod *mod,
  79                 enum rsnd_reg reg, u32 data)
  80 {
  81         struct device *dev = rsnd_priv_to_dev(priv);
  82         struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
  83
  84         if (!rsnd_is_accessible_reg(priv, gen, reg))
  85                 return;
  86
  87         regmap_fields_write(gen->regs[reg], rsnd_mod_id(mod), data);
  88
  89         dev_dbg(dev, "w %s - 0x%04d : %08x\n", rsnd_mod_name(mod), reg, data);
  90 }
  91
  92 void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod,
  93                enum rsnd_reg reg, u32 mask, u32 data)
  94 {
  95         struct device *dev = rsnd_priv_to_dev(priv);
  96         struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
  97
  98         if (!rsnd_is_accessible_reg(priv, gen, reg))
  99                 return;
 100
 101         regmap_fields_update_bits(gen->regs[reg], rsnd_mod_id(mod),
 102                                   mask, data);
 103
 104         dev_dbg(dev, "b %s - 0x%04d : %08x/%08x\n",
 105                 rsnd_mod_name(mod), reg, data, mask);
 106 }
 107
 108 #define rsnd_gen_regmap_init(priv, id_size, reg_id, conf)               \
 109         _rsnd_gen_regmap_init(priv, id_size, reg_id, conf, ARRAY_SIZE(conf))
 110 static int _rsnd_gen_regmap_init(struct rsnd_priv *priv,
 111                                  int id_size,
 112                                  int reg_id,
 113                                  struct rsnd_regmap_field_conf *conf,
 114                                  int conf_size)
 115 {
 116         struct platform_device *pdev = rsnd_priv_to_pdev(priv);
 117         struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
 118         struct device *dev = rsnd_priv_to_dev(priv);
 119         struct resource *res;
 120         struct regmap_config regc;
 121         struct regmap_field *regs;
 122         struct regmap *regmap;
 123         struct reg_field regf;
 124         void __iomem *base;
 125         int i;
 126
 127         memset(&regc, 0, sizeof(regc));
 128         regc.reg_bits = 32;
 129         regc.val_bits = 32;
 130         regc.reg_stride = 4;
 131
 132         res = platform_get_resource(pdev, IORESOURCE_MEM, reg_id);
 133         if (!res)
 134                 return -ENODEV;
 135
 136         base = devm_ioremap_resource(dev, res);
 137         if (IS_ERR(base))
 138                 return PTR_ERR(base);
 139
 140         regmap = devm_regmap_init_mmio(dev, base, &regc);
 141         if (IS_ERR(regmap))
 142                 return PTR_ERR(regmap);
 143
 144         gen->base[reg_id] = base;
 145         gen->regmap[reg_id] = regmap;
 146
 147         for (i = 0; i < conf_size; i++) {
 148
 149                 regf.reg        = conf[i].reg_offset;
 150                 regf.id_offset  = conf[i].id_offset;
 151                 regf.lsb        = 0;
 152                 regf.msb        = 31;
 153                 regf.id_size    = id_size;
 154
 155                 regs = devm_regmap_field_alloc(dev, regmap, regf);
 156                 if (IS_ERR(regs))
 157                         return PTR_ERR(regs);
 158
 159                 gen->regs[conf[i].idx] = regs;
 160         }
 161
 162         return 0;
 163 }
 164
 165 /*
 166  *      DMA read/write register offset
 167  *
 168  *      RSND_xxx_I_N    for Audio DMAC input
 169  *      RSND_xxx_O_N    for Audio DMAC output
 170  *      RSND_xxx_I_P    for Audio DMAC peri peri input
 171  *      RSND_xxx_O_P    for Audio DMAC peri peri output
 172  *
 173  *      ex) R-Car H2 case
 174  *            mod        / DMAC in    / DMAC out   / DMAC PP in / DMAC pp out
 175  *      SSI : 0xec541000 / 0xec241008 / 0xec24100c
 176  *      SSIU: 0xec541000 / 0xec100000 / 0xec100000 / 0xec400000 / 0xec400000
 177  *      SCU : 0xec500000 / 0xec000000 / 0xec004000 / 0xec300000 / 0xec304000
 178  *      CMD : 0xec500000 /            / 0xec008000                0xec308000
 179  */
 180 #define RDMA_SSI_I_N(addr, i)   (addr ##_reg - 0x00300000 + (0x40 * i) + 0x8)
 181 #define RDMA_SSI_O_N(addr, i)   (addr ##_reg - 0x00300000 + (0x40 * i) + 0xc)
 182
 183 #define RDMA_SSIU_I_N(addr, i)  (addr ##_reg - 0x00441000 + (0x1000 * i))
 184 #define RDMA_SSIU_O_N(addr, i)  (addr ##_reg - 0x00441000 + (0x1000 * i))
 185
 186 #define RDMA_SSIU_I_P(addr, i)  (addr ##_reg - 0x00141000 + (0x1000 * i))
 187 #define RDMA_SSIU_O_P(addr, i)  (addr ##_reg - 0x00141000 + (0x1000 * i))
 188
 189 #define RDMA_SRC_I_N(addr, i)   (addr ##_reg - 0x00500000 + (0x400 * i))
 190 #define RDMA_SRC_O_N(addr, i)   (addr ##_reg - 0x004fc000 + (0x400 * i))
 191
 192 #define RDMA_SRC_I_P(addr, i)   (addr ##_reg - 0x00200000 + (0x400 * i))
 193 #define RDMA_SRC_O_P(addr, i)   (addr ##_reg - 0x001fc000 + (0x400 * i))
 194
 195 #define RDMA_CMD_O_N(addr, i)   (addr ##_reg - 0x004f8000 + (0x400 * i))
 196 #define RDMA_CMD_O_P(addr, i)   (addr ##_reg - 0x001f8000 + (0x400 * i))
 197
 198 static dma_addr_t
 199 rsnd_gen2_dma_addr(struct rsnd_priv *priv,
 200                    struct rsnd_mod *mod,
 201                    int is_play, int is_from)
 202 {
 203         struct platform_device *pdev = rsnd_priv_to_pdev(priv);
 204         struct device *dev = rsnd_priv_to_dev(priv);
 205         struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
 206         dma_addr_t ssi_reg = platform_get_resource(pdev,
 207                                 IORESOURCE_MEM, RSND_GEN2_SSI)->start;
 208         dma_addr_t src_reg = platform_get_resource(pdev,
 209                                 IORESOURCE_MEM, RSND_GEN2_SCU)->start;
 210         int is_ssi = !!(rsnd_io_to_mod_ssi(io) == mod);
 211         int use_src = !!rsnd_io_to_mod_src(io);
 212         int use_dvc = !!rsnd_io_to_mod_dvc(io);
 213         int id = rsnd_mod_id(mod);
 214         struct dma_addr {
 215                 dma_addr_t out_addr;
 216                 dma_addr_t in_addr;
 217         } dma_addrs[3][2][3] = {
 218                 /* SRC */
 219                 {{{ 0,                          0 },
 220                 /* Capture */
 221                   { RDMA_SRC_O_N(src, id),      RDMA_SRC_I_P(src, id) },
 222                   { RDMA_CMD_O_N(src, id),      RDMA_SRC_I_P(src, id) } },
 223                  /* Playback */
 224                  {{ 0,                          0, },
 225                   { RDMA_SRC_O_P(src, id),      RDMA_SRC_I_N(src, id) },
 226                   { RDMA_CMD_O_P(src, id),      RDMA_SRC_I_N(src, id) } }
 227                 },
 228                 /* SSI */
 229                 /* Capture */
 230                 {{{ RDMA_SSI_O_N(ssi, id),      0 },
 231                   { RDMA_SSIU_O_P(ssi, id),     0 },
 232                   { RDMA_SSIU_O_P(ssi, id),     0 } },
 233                  /* Playback */
 234                  {{ 0,                          RDMA_SSI_I_N(ssi, id) },
 235                   { 0,                          RDMA_SSIU_I_P(ssi, id) },
 236                   { 0,                          RDMA_SSIU_I_P(ssi, id) } }
 237                 },
 238                 /* SSIU */
 239                 /* Capture */
 240                 {{{ RDMA_SSIU_O_N(ssi, id),     0 },
 241                   { RDMA_SSIU_O_P(ssi, id),     0 },
 242                   { RDMA_SSIU_O_P(ssi, id),     0 } },
 243                  /* Playback */
 244                  {{ 0,                          RDMA_SSIU_I_N(ssi, id) },
 245                   { 0,                          RDMA_SSIU_I_P(ssi, id) },
 246                   { 0,                          RDMA_SSIU_I_P(ssi, id) } } },
 247         };
 248
 249         /* it shouldn't happen */
 250         if (use_dvc & !use_src)
 251                 dev_err(dev, "DVC is selected without SRC\n");
 252
 253         /* use SSIU or SSI ? */
 254         if (is_ssi && (0 == strcmp(rsnd_mod_dma_name(mod), "ssiu")))
 255                 is_ssi++;
 256
 257         return (is_from) ?
 258                 dma_addrs[is_ssi][is_play][use_src + use_dvc].out_addr :
 259                 dma_addrs[is_ssi][is_play][use_src + use_dvc].in_addr;
 260 }
 261
 262 dma_addr_t rsnd_gen_dma_addr(struct rsnd_priv *priv,
 263                              struct rsnd_mod *mod,
 264                              int is_play, int is_from)
 265 {
 266         /*
 267          * gen1 uses default DMA addr
 268          */
 269         if (rsnd_is_gen1(priv))
 270                 return 0;
 271
 272         if (!mod)
 273                 return 0;
 274
 275         return rsnd_gen2_dma_addr(priv, mod, is_play, is_from);
 276 }
 277
 278 /*
 279  *              Gen2
 280  */
 281 static int rsnd_gen2_probe(struct platform_device *pdev,
 282                            struct rsnd_priv *priv)
 283 {
 284         struct device *dev = rsnd_priv_to_dev(priv);
 285         struct rsnd_regmap_field_conf conf_ssiu[] = {
 286                 RSND_GEN_S_REG(SSI_MODE0,       0x800),
 287                 RSND_GEN_S_REG(SSI_MODE1,       0x804),
 288                 /* FIXME: it needs SSI_MODE2/3 in the future */
 289                 RSND_GEN_M_REG(SSI_BUSIF_MODE,  0x0,    0x80),
 290                 RSND_GEN_M_REG(SSI_BUSIF_ADINR, 0x4,    0x80),
 291                 RSND_GEN_M_REG(BUSIF_DALIGN,    0x8,    0x80),
 292                 RSND_GEN_M_REG(SSI_CTRL,        0x10,   0x80),
 293                 RSND_GEN_M_REG(INT_ENABLE,      0x18,   0x80),
 294         };
 295         struct rsnd_regmap_field_conf conf_scu[] = {
 296                 RSND_GEN_M_REG(SRC_BUSIF_MODE,  0x0,    0x20),
 297                 RSND_GEN_M_REG(SRC_ROUTE_MODE0, 0xc,    0x20),
 298                 RSND_GEN_M_REG(SRC_CTRL,        0x10,   0x20),
 299                 RSND_GEN_M_REG(CMD_ROUTE_SLCT,  0x18c,  0x20),
 300                 RSND_GEN_M_REG(CMD_CTRL,        0x190,  0x20),
 301                 RSND_GEN_M_REG(SRC_SWRSR,       0x200,  0x40),
 302                 RSND_GEN_M_REG(SRC_SRCIR,       0x204,  0x40),
 303                 RSND_GEN_M_REG(SRC_ADINR,       0x214,  0x40),
 304                 RSND_GEN_M_REG(SRC_IFSCR,       0x21c,  0x40),
 305                 RSND_GEN_M_REG(SRC_IFSVR,       0x220,  0x40),
 306                 RSND_GEN_M_REG(SRC_SRCCR,       0x224,  0x40),
 307                 RSND_GEN_M_REG(SRC_BSDSR,       0x22c,  0x40),
 308                 RSND_GEN_M_REG(SRC_BSISR,       0x238,  0x40),
 309                 RSND_GEN_M_REG(DVC_SWRSR,       0xe00,  0x100),
 310                 RSND_GEN_M_REG(DVC_DVUIR,       0xe04,  0x100),
 311                 RSND_GEN_M_REG(DVC_ADINR,       0xe08,  0x100),
 312                 RSND_GEN_M_REG(DVC_DVUCR,       0xe10,  0x100),
 313                 RSND_GEN_M_REG(DVC_ZCMCR,       0xe14,  0x100),
 314                 RSND_GEN_M_REG(DVC_VOL0R,       0xe28,  0x100),
 315                 RSND_GEN_M_REG(DVC_VOL1R,       0xe2c,  0x100),
 316                 RSND_GEN_M_REG(DVC_DVUER,       0xe48,  0x100),
 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_SEL2,  0x14),
 325                 RSND_GEN_S_REG(DIV_EN,          0x30),
 326                 RSND_GEN_S_REG(SRCIN_TIMSEL0,   0x34),
 327                 RSND_GEN_S_REG(SRCIN_TIMSEL1,   0x38),
 328                 RSND_GEN_S_REG(SRCIN_TIMSEL2,   0x3c),
 329                 RSND_GEN_S_REG(SRCIN_TIMSEL3,   0x40),
 330                 RSND_GEN_S_REG(SRCIN_TIMSEL4,   0x44),
 331                 RSND_GEN_S_REG(SRCOUT_TIMSEL0,  0x48),
 332                 RSND_GEN_S_REG(SRCOUT_TIMSEL1,  0x4c),
 333                 RSND_GEN_S_REG(SRCOUT_TIMSEL2,  0x50),
 334                 RSND_GEN_S_REG(SRCOUT_TIMSEL3,  0x54),
 335                 RSND_GEN_S_REG(SRCOUT_TIMSEL4,  0x58),
 336                 RSND_GEN_S_REG(CMDOUT_TIMSEL,   0x5c),
 337         };
 338         struct rsnd_regmap_field_conf conf_ssi[] = {
 339                 RSND_GEN_M_REG(SSICR,           0x00,   0x40),
 340                 RSND_GEN_M_REG(SSISR,           0x04,   0x40),
 341                 RSND_GEN_M_REG(SSITDR,          0x08,   0x40),
 342                 RSND_GEN_M_REG(SSIRDR,          0x0c,   0x40),
 343                 RSND_GEN_M_REG(SSIWSR,          0x20,   0x40),
 344         };
 345         int ret_ssiu;
 346         int ret_scu;
 347         int ret_adg;
 348         int ret_ssi;
 349
 350         ret_ssiu = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SSIU, conf_ssiu);
 351         ret_scu  = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SCU,  conf_scu);
 352         ret_adg  = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_ADG,  conf_adg);
 353         ret_ssi  = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SSI,  conf_ssi);
 354         if (ret_ssiu < 0 ||
 355             ret_scu  < 0 ||
 356             ret_adg  < 0 ||
 357             ret_ssi  < 0)
 358                 return ret_ssiu | ret_scu | ret_adg | ret_ssi;
 359
 360         dev_dbg(dev, "Gen2 is probed\n");
 361
 362         return 0;
 363 }
 364
 365 /*
 366  *              Gen1
 367  */
 368
 369 static int rsnd_gen1_probe(struct platform_device *pdev,
 370                            struct rsnd_priv *priv)
 371 {
 372         struct device *dev = rsnd_priv_to_dev(priv);
 373         struct rsnd_regmap_field_conf conf_sru[] = {
 374                 RSND_GEN_S_REG(SRC_ROUTE_SEL,   0x00),
 375                 RSND_GEN_S_REG(SRC_TMG_SEL0,    0x08),
 376                 RSND_GEN_S_REG(SRC_TMG_SEL1,    0x0c),
 377                 RSND_GEN_S_REG(SRC_TMG_SEL2,    0x10),
 378                 RSND_GEN_S_REG(SRC_ROUTE_CTRL,  0xc0),
 379                 RSND_GEN_S_REG(SSI_MODE0,       0xD0),
 380                 RSND_GEN_S_REG(SSI_MODE1,       0xD4),
 381                 RSND_GEN_M_REG(SRC_BUSIF_MODE,  0x20,   0x4),
 382                 RSND_GEN_M_REG(SRC_ROUTE_MODE0, 0x50,   0x8),
 383                 RSND_GEN_M_REG(SRC_SWRSR,       0x200,  0x40),
 384                 RSND_GEN_M_REG(SRC_SRCIR,       0x204,  0x40),
 385                 RSND_GEN_M_REG(SRC_ADINR,       0x214,  0x40),
 386                 RSND_GEN_M_REG(SRC_IFSCR,       0x21c,  0x40),
 387                 RSND_GEN_M_REG(SRC_IFSVR,       0x220,  0x40),
 388                 RSND_GEN_M_REG(SRC_SRCCR,       0x224,  0x40),
 389                 RSND_GEN_M_REG(SRC_MNFSR,       0x228,  0x40),
 390         };
 391         struct rsnd_regmap_field_conf conf_adg[] = {
 392                 RSND_GEN_S_REG(BRRA,            0x00),
 393                 RSND_GEN_S_REG(BRRB,            0x04),
 394                 RSND_GEN_S_REG(SSICKR,          0x08),
 395                 RSND_GEN_S_REG(AUDIO_CLK_SEL0,  0x0c),
 396                 RSND_GEN_S_REG(AUDIO_CLK_SEL1,  0x10),
 397                 RSND_GEN_S_REG(AUDIO_CLK_SEL3,  0x18),
 398                 RSND_GEN_S_REG(AUDIO_CLK_SEL4,  0x1c),
 399                 RSND_GEN_S_REG(AUDIO_CLK_SEL5,  0x20),
 400         };
 401         struct rsnd_regmap_field_conf conf_ssi[] = {
 402                 RSND_GEN_M_REG(SSICR,           0x00,   0x40),
 403                 RSND_GEN_M_REG(SSISR,           0x04,   0x40),
 404                 RSND_GEN_M_REG(SSITDR,          0x08,   0x40),
 405                 RSND_GEN_M_REG(SSIRDR,          0x0c,   0x40),
 406                 RSND_GEN_M_REG(SSIWSR,          0x20,   0x40),
 407         };
 408         int ret_sru;
 409         int ret_adg;
 410         int ret_ssi;
 411
 412         ret_sru  = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_SRU,  conf_sru);
 413         ret_adg  = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_ADG,  conf_adg);
 414         ret_ssi  = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_SSI,  conf_ssi);
 415         if (ret_sru  < 0 ||
 416             ret_adg  < 0 ||
 417             ret_ssi  < 0)
 418                 return ret_sru | ret_adg | ret_ssi;
 419
 420         dev_dbg(dev, "Gen1 is probed\n");
 421
 422         return 0;
 423 }
 424
 425 /*
 426  *              Gen
 427  */
 428 static void rsnd_of_parse_gen(struct platform_device *pdev,
 429                               const struct rsnd_of_data *of_data,
 430                               struct rsnd_priv *priv)
 431 {
 432         struct rcar_snd_info *info = priv->info;
 433
 434         if (!of_data)
 435                 return;
 436
 437         info->flags = of_data->flags;
 438 }
 439
 440 int rsnd_gen_probe(struct platform_device *pdev,
 441                    const struct rsnd_of_data *of_data,
 442                    struct rsnd_priv *priv)
 443 {
 444         struct device *dev = rsnd_priv_to_dev(priv);
 445         struct rsnd_gen *gen;
 446         int ret;
 447
 448         rsnd_of_parse_gen(pdev, of_data, priv);
 449
 450         gen = devm_kzalloc(dev, sizeof(*gen), GFP_KERNEL);
 451         if (!gen) {
 452                 dev_err(dev, "GEN allocate failed\n");
 453                 return -ENOMEM;
 454         }
 455
 456         priv->gen = gen;
 457
 458         ret = -ENODEV;
 459         if (rsnd_is_gen1(priv))
 460                 ret = rsnd_gen1_probe(pdev, priv);
 461         else if (rsnd_is_gen2(priv))
 462                 ret = rsnd_gen2_probe(pdev, priv);
 463
 464         if (ret < 0)
 465                 dev_err(dev, "unknown generation R-Car sound device\n");
 466
 467         return ret;
 468 }