sound/soc/sh/rcar/rsnd.h

   1 /*
   2  * Renesas R-Car
   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 #ifndef RSND_H
  12 #define RSND_H
  13
  14 #include <linux/clk.h>
  15 #include <linux/device.h>
  16 #include <linux/dma-mapping.h>
  17 #include <linux/io.h>
  18 #include <linux/list.h>
  19 #include <linux/module.h>
  20 #include <linux/sh_dma.h>
  21 #include <linux/workqueue.h>
  22 #include <sound/rcar_snd.h>
  23 #include <sound/soc.h>
  24 #include <sound/pcm_params.h>
  25
  26 /*
  27  *      pseudo register
  28  *
  29  * The register address offsets SRU/SCU/SSIU on Gen1/Gen2 are very different.
  30  * This driver uses pseudo register in order to hide it.
  31  * see gen1/gen2 for detail
  32  */
  33 enum rsnd_reg {
  34         /* SRU/SCU */
  35         RSND_REG_SRC_ROUTE_SEL,
  36         RSND_REG_SRC_TMG_SEL0,
  37         RSND_REG_SRC_TMG_SEL1,
  38         RSND_REG_SRC_TMG_SEL2,
  39         RSND_REG_SRC_CTRL,
  40         RSND_REG_SSI_MODE0,
  41         RSND_REG_SSI_MODE1,
  42         RSND_REG_BUSIF_MODE,
  43         RSND_REG_BUSIF_ADINR,
  44
  45         /* ADG */
  46         RSND_REG_BRRA,
  47         RSND_REG_BRRB,
  48         RSND_REG_SSICKR,
  49         RSND_REG_AUDIO_CLK_SEL0,
  50         RSND_REG_AUDIO_CLK_SEL1,
  51         RSND_REG_AUDIO_CLK_SEL2,
  52         RSND_REG_AUDIO_CLK_SEL3,
  53         RSND_REG_AUDIO_CLK_SEL4,
  54         RSND_REG_AUDIO_CLK_SEL5,
  55
  56         /* SSI */
  57         RSND_REG_SSICR,
  58         RSND_REG_SSISR,
  59         RSND_REG_SSITDR,
  60         RSND_REG_SSIRDR,
  61         RSND_REG_SSIWSR,
  62
  63         RSND_REG_MAX,
  64 };
  65
  66 struct rsnd_priv;
  67 struct rsnd_mod;
  68 struct rsnd_dai;
  69 struct rsnd_dai_stream;
  70
  71 /*
  72  *      R-Car basic functions
  73  */
  74 #define rsnd_mod_read(m, r) \
  75         rsnd_read(rsnd_mod_to_priv(m), m, RSND_REG_##r)
  76 #define rsnd_mod_write(m, r, d) \
  77         rsnd_write(rsnd_mod_to_priv(m), m, RSND_REG_##r, d)
  78 #define rsnd_mod_bset(m, r, s, d) \
  79         rsnd_bset(rsnd_mod_to_priv(m), m, RSND_REG_##r, s, d)
  80
  81 #define rsnd_priv_read(p, r)            rsnd_read(p, NULL, RSND_REG_##r)
  82 #define rsnd_priv_write(p, r, d)        rsnd_write(p, NULL, RSND_REG_##r, d)
  83 #define rsnd_priv_bset(p, r, s, d)      rsnd_bset(p, NULL, RSND_REG_##r, s, d)
  84
  85 u32 rsnd_read(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg);
  86 void rsnd_write(struct rsnd_priv *priv, struct rsnd_mod *mod,
  87                 enum rsnd_reg reg, u32 data);
  88 void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg,
  89                     u32 mask, u32 data);
  90
  91 /*
  92  *      R-Car DMA
  93  */
  94 struct rsnd_dma {
  95         struct rsnd_priv        *priv;
  96         struct sh_dmae_slave    slave;
  97         struct work_struct      work;
  98         struct dma_chan         *chan;
  99         enum dma_data_direction dir;
 100         int (*inquiry)(struct rsnd_dma *dma, dma_addr_t *buf, int *len);
 101         int (*complete)(struct rsnd_dma *dma);
 102
 103         int submit_loop;
 104 };
 105
 106 void rsnd_dma_start(struct rsnd_dma *dma);
 107 void rsnd_dma_stop(struct rsnd_dma *dma);
 108 int rsnd_dma_available(struct rsnd_dma *dma);
 109 int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma,
 110         int is_play, int id,
 111         int (*inquiry)(struct rsnd_dma *dma, dma_addr_t *buf, int *len),
 112         int (*complete)(struct rsnd_dma *dma));
 113 void  rsnd_dma_quit(struct rsnd_priv *priv,
 114                     struct rsnd_dma *dma);
 115
 116
 117 /*
 118  *      R-Car sound mod
 119  */
 120
 121 struct rsnd_mod_ops {
 122         char *name;
 123         int (*init)(struct rsnd_mod *mod,
 124                     struct rsnd_dai *rdai,
 125                     struct rsnd_dai_stream *io);
 126         int (*quit)(struct rsnd_mod *mod,
 127                     struct rsnd_dai *rdai,
 128                     struct rsnd_dai_stream *io);
 129         int (*start)(struct rsnd_mod *mod,
 130                      struct rsnd_dai *rdai,
 131                      struct rsnd_dai_stream *io);
 132         int (*stop)(struct rsnd_mod *mod,
 133                     struct rsnd_dai *rdai,
 134                     struct rsnd_dai_stream *io);
 135 };
 136
 137 struct rsnd_mod {
 138         int id;
 139         struct rsnd_priv *priv;
 140         struct rsnd_mod_ops *ops;
 141         struct list_head list; /* connect to rsnd_dai playback/capture */
 142         struct rsnd_dma dma;
 143 };
 144
 145 #define rsnd_mod_to_priv(mod) ((mod)->priv)
 146 #define rsnd_mod_to_dma(mod) (&(mod)->dma)
 147 #define rsnd_dma_to_mod(_dma) container_of((_dma), struct rsnd_mod, dma)
 148 #define rsnd_mod_id(mod) ((mod)->id)
 149 #define for_each_rsnd_mod(pos, n, io)   \
 150         list_for_each_entry_safe(pos, n, &(io)->head, list)
 151 #define rsnd_mod_call(mod, func, rdai, io)      \
 152         (!(mod) ? -ENODEV :                     \
 153          !((mod)->ops->func) ? 0 :              \
 154          (mod)->ops->func(mod, rdai, io))
 155
 156 void rsnd_mod_init(struct rsnd_priv *priv,
 157                    struct rsnd_mod *mod,
 158                    struct rsnd_mod_ops *ops,
 159                    int id);
 160 char *rsnd_mod_name(struct rsnd_mod *mod);
 161
 162 /*
 163  *      R-Car sound DAI
 164  */
 165 #define RSND_DAI_NAME_SIZE      16
 166 struct rsnd_dai_stream {
 167         struct list_head head; /* head of rsnd_mod list */
 168         struct snd_pcm_substream *substream;
 169         int byte_pos;
 170         int period_pos;
 171         int byte_per_period;
 172         int next_period_byte;
 173 };
 174
 175 struct rsnd_dai {
 176         char name[RSND_DAI_NAME_SIZE];
 177         struct rsnd_dai_platform_info *info; /* rcar_snd.h */
 178         struct rsnd_dai_stream playback;
 179         struct rsnd_dai_stream capture;
 180
 181         int clk_master:1;
 182         int bit_clk_inv:1;
 183         int frm_clk_inv:1;
 184         int sys_delay:1;
 185         int data_alignment:1;
 186 };
 187
 188 #define rsnd_dai_nr(priv) ((priv)->dai_nr)
 189 #define for_each_rsnd_dai(rdai, priv, i)                \
 190         for (i = 0, (rdai) = rsnd_dai_get(priv, i);     \
 191              i < rsnd_dai_nr(priv);                     \
 192              i++, (rdai) = rsnd_dai_get(priv, i))
 193
 194 struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id);
 195 int rsnd_dai_disconnect(struct rsnd_mod *mod);
 196 int rsnd_dai_connect(struct rsnd_dai *rdai, struct rsnd_mod *mod,
 197                      struct rsnd_dai_stream *io);
 198 int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io);
 199 int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai);
 200 #define rsnd_dai_get_platform_info(rdai) ((rdai)->info)
 201 #define rsnd_io_to_runtime(io) ((io)->substream->runtime)
 202
 203 void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int cnt);
 204 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional);
 205
 206 /*
 207  *      R-Car Gen1/Gen2
 208  */
 209 int rsnd_gen_probe(struct platform_device *pdev,
 210                    struct rcar_snd_info *info,
 211                    struct rsnd_priv *priv);
 212 void rsnd_gen_remove(struct platform_device *pdev,
 213                      struct rsnd_priv *priv);
 214 int rsnd_gen_path_init(struct rsnd_priv *priv,
 215                        struct rsnd_dai *rdai,
 216                        struct rsnd_dai_stream *io);
 217 int rsnd_gen_path_exit(struct rsnd_priv *priv,
 218                        struct rsnd_dai *rdai,
 219                        struct rsnd_dai_stream *io);
 220 void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv,
 221                                struct rsnd_mod *mod,
 222                                enum rsnd_reg reg);
 223 #define rsnd_is_gen1(s)         (((s)->info->flags & RSND_GEN_MASK) == RSND_GEN1)
 224 #define rsnd_is_gen2(s)         (((s)->info->flags & RSND_GEN_MASK) == RSND_GEN2)
 225
 226 /*
 227  *      R-Car ADG
 228  */
 229 int rsnd_adg_ssi_clk_stop(struct rsnd_mod *mod);
 230 int rsnd_adg_ssi_clk_try_start(struct rsnd_mod *mod, unsigned int rate);
 231 int rsnd_adg_probe(struct platform_device *pdev,
 232                    struct rcar_snd_info *info,
 233                    struct rsnd_priv *priv);
 234 void rsnd_adg_remove(struct platform_device *pdev,
 235                    struct rsnd_priv *priv);
 236
 237 /*
 238  *      R-Car sound priv
 239  */
 240 struct rsnd_priv {
 241
 242         struct device *dev;
 243         struct rcar_snd_info *info;
 244         spinlock_t lock;
 245
 246         /*
 247          * below value will be filled on rsnd_gen_probe()
 248          */
 249         void *gen;
 250
 251         /*
 252          * below value will be filled on rsnd_scu_probe()
 253          */
 254         void *scu;
 255         int scu_nr;
 256
 257         /*
 258          * below value will be filled on rsnd_adg_probe()
 259          */
 260         void *adg;
 261
 262         /*
 263          * below value will be filled on rsnd_ssi_probe()
 264          */
 265         void *ssiu;
 266
 267         /*
 268          * below value will be filled on rsnd_dai_probe()
 269          */
 270         struct snd_soc_dai_driver *daidrv;
 271         struct rsnd_dai *rdai;
 272         int dai_nr;
 273 };
 274
 275 #define rsnd_priv_to_dev(priv)  ((priv)->dev)
 276 #define rsnd_lock(priv, flags) spin_lock_irqsave(&priv->lock, flags)
 277 #define rsnd_unlock(priv, flags) spin_unlock_irqrestore(&priv->lock, flags)
 278
 279 /*
 280  *      R-Car SCU
 281  */
 282 int rsnd_scu_probe(struct platform_device *pdev,
 283                    struct rcar_snd_info *info,
 284                    struct rsnd_priv *priv);
 285 void rsnd_scu_remove(struct platform_device *pdev,
 286                      struct rsnd_priv *priv);
 287 struct rsnd_mod *rsnd_scu_mod_get(struct rsnd_priv *priv, int id);
 288 #define rsnd_scu_nr(priv) ((priv)->scu_nr)
 289
 290 /*
 291  *      R-Car SSI
 292  */
 293 int rsnd_ssi_probe(struct platform_device *pdev,
 294                    struct rcar_snd_info *info,
 295                    struct rsnd_priv *priv);
 296 void rsnd_ssi_remove(struct platform_device *pdev,
 297                    struct rsnd_priv *priv);
 298 struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id);
 299 struct rsnd_mod *rsnd_ssi_mod_get_frm_dai(struct rsnd_priv *priv,
 300                                           int dai_id, int is_play);
 301
 302 #endif