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/SSIU */ 35 RSND_REG_SRC_ROUTE_SEL, /* for Gen1 */ 36 RSND_REG_SRC_TMG_SEL0, /* for Gen1 */ 37 RSND_REG_SRC_TMG_SEL1, /* for Gen1 */ 38 RSND_REG_SRC_TMG_SEL2, /* for Gen1 */ 39 RSND_REG_SRC_ROUTE_CTRL, /* for Gen1 */ 40 RSND_REG_SSI_MODE0, 41 RSND_REG_SSI_MODE1, 42 RSND_REG_BUSIF_MODE, 43 RSND_REG_INT_ENABLE, /* for Gen2 */ 44 RSND_REG_SRC_ROUTE_MODE0, 45 RSND_REG_SRC_SWRSR, 46 RSND_REG_SRC_SRCIR, 47 RSND_REG_SRC_ADINR, 48 RSND_REG_SRC_IFSCR, 49 RSND_REG_SRC_IFSVR, 50 RSND_REG_SRC_SRCCR, 51 RSND_REG_SRC_MNFSR, 52 53 /* ADG */ 54 RSND_REG_BRRA, 55 RSND_REG_BRRB, 56 RSND_REG_SSICKR, 57 RSND_REG_AUDIO_CLK_SEL0, 58 RSND_REG_AUDIO_CLK_SEL1, 59 RSND_REG_AUDIO_CLK_SEL2, 60 RSND_REG_AUDIO_CLK_SEL3, /* for Gen1 */ 61 RSND_REG_AUDIO_CLK_SEL4, /* for Gen1 */ 62 RSND_REG_AUDIO_CLK_SEL5, /* for Gen1 */ 63 64 /* SSI */ 65 RSND_REG_SSICR, 66 RSND_REG_SSISR, 67 RSND_REG_SSITDR, 68 RSND_REG_SSIRDR, 69 RSND_REG_SSIWSR, 70 71 RSND_REG_MAX, 72 }; 73 74 struct rsnd_priv; 75 struct rsnd_mod; 76 struct rsnd_dai; 77 struct rsnd_dai_stream; 78 79 /* 80 * R-Car basic functions 81 */ 82 #define rsnd_mod_read(m, r) \ 83 rsnd_read(rsnd_mod_to_priv(m), m, RSND_REG_##r) 84 #define rsnd_mod_write(m, r, d) \ 85 rsnd_write(rsnd_mod_to_priv(m), m, RSND_REG_##r, d) 86 #define rsnd_mod_bset(m, r, s, d) \ 87 rsnd_bset(rsnd_mod_to_priv(m), m, RSND_REG_##r, s, d) 88 89 u32 rsnd_read(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg); 90 void rsnd_write(struct rsnd_priv *priv, struct rsnd_mod *mod, 91 enum rsnd_reg reg, u32 data); 92 void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg, 93 u32 mask, u32 data); 94 95 /* 96 * R-Car DMA 97 */ 98 struct rsnd_dma { 99 struct rsnd_priv *priv; 100 struct sh_dmae_slave slave; 101 struct work_struct work; 102 struct dma_chan *chan; 103 enum dma_data_direction dir; 104 int (*inquiry)(struct rsnd_dma *dma, dma_addr_t *buf, int *len); 105 int (*complete)(struct rsnd_dma *dma); 106 107 int submit_loop; 108 }; 109 110 void rsnd_dma_start(struct rsnd_dma *dma); 111 void rsnd_dma_stop(struct rsnd_dma *dma); 112 int rsnd_dma_available(struct rsnd_dma *dma); 113 int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, 114 int is_play, int id, 115 int (*inquiry)(struct rsnd_dma *dma, dma_addr_t *buf, int *len), 116 int (*complete)(struct rsnd_dma *dma)); 117 void rsnd_dma_quit(struct rsnd_priv *priv, 118 struct rsnd_dma *dma); 119 120 121 /* 122 * R-Car sound mod 123 */ 124 125 struct rsnd_mod_ops { 126 char *name; 127 int (*init)(struct rsnd_mod *mod, 128 struct rsnd_dai *rdai, 129 struct rsnd_dai_stream *io); 130 int (*quit)(struct rsnd_mod *mod, 131 struct rsnd_dai *rdai, 132 struct rsnd_dai_stream *io); 133 int (*start)(struct rsnd_mod *mod, 134 struct rsnd_dai *rdai, 135 struct rsnd_dai_stream *io); 136 int (*stop)(struct rsnd_mod *mod, 137 struct rsnd_dai *rdai, 138 struct rsnd_dai_stream *io); 139 }; 140 141 struct rsnd_mod { 142 int id; 143 struct rsnd_priv *priv; 144 struct rsnd_mod_ops *ops; 145 struct list_head list; /* connect to rsnd_dai playback/capture */ 146 struct rsnd_dma dma; 147 }; 148 149 #define rsnd_mod_to_priv(mod) ((mod)->priv) 150 #define rsnd_mod_to_dma(mod) (&(mod)->dma) 151 #define rsnd_dma_to_mod(_dma) container_of((_dma), struct rsnd_mod, dma) 152 #define rsnd_mod_id(mod) ((mod)->id) 153 #define for_each_rsnd_mod(pos, n, io) \ 154 list_for_each_entry_safe(pos, n, &(io)->head, list) 155 #define rsnd_mod_call(mod, func, rdai, io) \ 156 (!(mod) ? -ENODEV : \ 157 !((mod)->ops->func) ? 0 : \ 158 (mod)->ops->func(mod, rdai, io)) 159 160 void rsnd_mod_init(struct rsnd_priv *priv, 161 struct rsnd_mod *mod, 162 struct rsnd_mod_ops *ops, 163 int id); 164 char *rsnd_mod_name(struct rsnd_mod *mod); 165 166 /* 167 * R-Car sound DAI 168 */ 169 #define RSND_DAI_NAME_SIZE 16 170 struct rsnd_dai_stream { 171 struct list_head head; /* head of rsnd_mod list */ 172 struct snd_pcm_substream *substream; 173 int byte_pos; 174 int period_pos; 175 int byte_per_period; 176 int next_period_byte; 177 }; 178 179 struct rsnd_dai { 180 char name[RSND_DAI_NAME_SIZE]; 181 struct rsnd_dai_platform_info *info; /* rcar_snd.h */ 182 struct rsnd_dai_stream playback; 183 struct rsnd_dai_stream capture; 184 185 unsigned int clk_master:1; 186 unsigned int bit_clk_inv:1; 187 unsigned int frm_clk_inv:1; 188 unsigned int sys_delay:1; 189 unsigned int data_alignment:1; 190 }; 191 192 #define rsnd_dai_nr(priv) ((priv)->dai_nr) 193 #define for_each_rsnd_dai(rdai, priv, i) \ 194 for (i = 0, (rdai) = rsnd_dai_get(priv, i); \ 195 i < rsnd_dai_nr(priv); \ 196 i++, (rdai) = rsnd_dai_get(priv, i)) 197 198 struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id); 199 int rsnd_dai_disconnect(struct rsnd_mod *mod); 200 int rsnd_dai_connect(struct rsnd_dai *rdai, struct rsnd_mod *mod, 201 struct rsnd_dai_stream *io); 202 int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io); 203 int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai); 204 #define rsnd_dai_get_platform_info(rdai) ((rdai)->info) 205 #define rsnd_io_to_runtime(io) ((io)->substream->runtime) 206 207 void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int cnt); 208 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional); 209 210 /* 211 * R-Car Gen1/Gen2 212 */ 213 int rsnd_gen_probe(struct platform_device *pdev, 214 struct rcar_snd_info *info, 215 struct rsnd_priv *priv); 216 void rsnd_gen_remove(struct platform_device *pdev, 217 struct rsnd_priv *priv); 218 int rsnd_gen_path_init(struct rsnd_priv *priv, 219 struct rsnd_dai *rdai, 220 struct rsnd_dai_stream *io); 221 int rsnd_gen_path_exit(struct rsnd_priv *priv, 222 struct rsnd_dai *rdai, 223 struct rsnd_dai_stream *io); 224 void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv, 225 struct rsnd_mod *mod, 226 enum rsnd_reg reg); 227 #define rsnd_is_gen1(s) (((s)->info->flags & RSND_GEN_MASK) == RSND_GEN1) 228 #define rsnd_is_gen2(s) (((s)->info->flags & RSND_GEN_MASK) == RSND_GEN2) 229 230 /* 231 * R-Car ADG 232 */ 233 int rsnd_adg_ssi_clk_stop(struct rsnd_mod *mod); 234 int rsnd_adg_ssi_clk_try_start(struct rsnd_mod *mod, unsigned int rate); 235 int rsnd_adg_probe(struct platform_device *pdev, 236 struct rcar_snd_info *info, 237 struct rsnd_priv *priv); 238 void rsnd_adg_remove(struct platform_device *pdev, 239 struct rsnd_priv *priv); 240 int rsnd_adg_set_convert_clk(struct rsnd_priv *priv, 241 struct rsnd_mod *mod, 242 unsigned int src_rate, 243 unsigned int dst_rate); 244 245 /* 246 * R-Car sound priv 247 */ 248 struct rsnd_priv { 249 250 struct device *dev; 251 struct rcar_snd_info *info; 252 spinlock_t lock; 253 254 /* 255 * below value will be filled on rsnd_gen_probe() 256 */ 257 void *gen; 258 259 /* 260 * below value will be filled on rsnd_scu_probe() 261 */ 262 void *scu; 263 int scu_nr; 264 265 /* 266 * below value will be filled on rsnd_adg_probe() 267 */ 268 void *adg; 269 270 /* 271 * below value will be filled on rsnd_ssi_probe() 272 */ 273 void *ssiu; 274 275 /* 276 * below value will be filled on rsnd_dai_probe() 277 */ 278 struct snd_soc_dai_driver *daidrv; 279 struct rsnd_dai *rdai; 280 int dai_nr; 281 }; 282 283 #define rsnd_priv_to_dev(priv) ((priv)->dev) 284 #define rsnd_lock(priv, flags) spin_lock_irqsave(&priv->lock, flags) 285 #define rsnd_unlock(priv, flags) spin_unlock_irqrestore(&priv->lock, flags) 286 287 /* 288 * R-Car SCU 289 */ 290 int rsnd_scu_probe(struct platform_device *pdev, 291 struct rcar_snd_info *info, 292 struct rsnd_priv *priv); 293 void rsnd_scu_remove(struct platform_device *pdev, 294 struct rsnd_priv *priv); 295 struct rsnd_mod *rsnd_scu_mod_get(struct rsnd_priv *priv, int id); 296 bool rsnd_scu_hpbif_is_enable(struct rsnd_mod *mod); 297 unsigned int rsnd_scu_get_ssi_rate(struct rsnd_priv *priv, 298 struct rsnd_mod *ssi_mod, 299 struct snd_pcm_runtime *runtime); 300 301 #define rsnd_scu_nr(priv) ((priv)->scu_nr) 302 303 /* 304 * R-Car SSI 305 */ 306 int rsnd_ssi_probe(struct platform_device *pdev, 307 struct rcar_snd_info *info, 308 struct rsnd_priv *priv); 309 void rsnd_ssi_remove(struct platform_device *pdev, 310 struct rsnd_priv *priv); 311 struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id); 312 struct rsnd_mod *rsnd_ssi_mod_get_frm_dai(struct rsnd_priv *priv, 313 int dai_id, int is_play); 314 315 #endif 316