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_INT_ENABLE, /* for Gen2 */ 43 RSND_REG_SRC_BUSIF_MODE, 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 sh_dmae_slave slave; 100 struct work_struct work; 101 struct dma_chan *chan; 102 enum dma_data_direction dir; 103 int (*inquiry)(struct rsnd_dma *dma, dma_addr_t *buf, int *len); 104 int (*complete)(struct rsnd_dma *dma); 105 106 int submit_loop; 107 }; 108 109 void rsnd_dma_start(struct rsnd_dma *dma); 110 void rsnd_dma_stop(struct rsnd_dma *dma); 111 int rsnd_dma_available(struct rsnd_dma *dma); 112 int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, 113 int is_play, int id, 114 int (*inquiry)(struct rsnd_dma *dma, dma_addr_t *buf, int *len), 115 int (*complete)(struct rsnd_dma *dma)); 116 void rsnd_dma_quit(struct rsnd_priv *priv, 117 struct rsnd_dma *dma); 118 119 120 /* 121 * R-Car sound mod 122 */ 123 124 struct rsnd_mod_ops { 125 char *name; 126 int (*init)(struct rsnd_mod *mod, 127 struct rsnd_dai *rdai, 128 struct rsnd_dai_stream *io); 129 int (*quit)(struct rsnd_mod *mod, 130 struct rsnd_dai *rdai, 131 struct rsnd_dai_stream *io); 132 int (*start)(struct rsnd_mod *mod, 133 struct rsnd_dai *rdai, 134 struct rsnd_dai_stream *io); 135 int (*stop)(struct rsnd_mod *mod, 136 struct rsnd_dai *rdai, 137 struct rsnd_dai_stream *io); 138 }; 139 140 struct rsnd_mod { 141 int id; 142 struct rsnd_priv *priv; 143 struct rsnd_mod_ops *ops; 144 struct list_head list; /* connect to rsnd_dai playback/capture */ 145 struct rsnd_dma dma; 146 }; 147 148 #define rsnd_mod_to_priv(mod) ((mod)->priv) 149 #define rsnd_mod_to_dma(mod) (&(mod)->dma) 150 #define rsnd_dma_to_mod(_dma) container_of((_dma), struct rsnd_mod, dma) 151 #define rsnd_mod_id(mod) ((mod)->id) 152 #define for_each_rsnd_mod(pos, n, io) \ 153 list_for_each_entry_safe(pos, n, &(io)->head, list) 154 #define __rsnd_mod_call(mod, func, rdai, io) \ 155 ({ \ 156 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \ 157 struct device *dev = rsnd_priv_to_dev(priv); \ 158 dev_dbg(dev, "%s-%d-%s\n", \ 159 rsnd_mod_name(mod), rsnd_mod_id(mod), #func); \ 160 (mod)->ops->func(mod, rdai, io); \ 161 }) 162 163 #define rsnd_mod_call(mod, func, rdai, io) \ 164 (!(mod) ? -ENODEV : \ 165 !((mod)->ops->func) ? 0 : \ 166 __rsnd_mod_call(mod, func, rdai, io)) 167 168 void rsnd_mod_init(struct rsnd_priv *priv, 169 struct rsnd_mod *mod, 170 struct rsnd_mod_ops *ops, 171 int id); 172 char *rsnd_mod_name(struct rsnd_mod *mod); 173 174 /* 175 * R-Car sound DAI 176 */ 177 #define RSND_DAI_NAME_SIZE 16 178 struct rsnd_dai_stream { 179 struct list_head head; /* head of rsnd_mod list */ 180 struct snd_pcm_substream *substream; 181 int byte_pos; 182 int period_pos; 183 int byte_per_period; 184 int next_period_byte; 185 }; 186 187 struct rsnd_dai { 188 char name[RSND_DAI_NAME_SIZE]; 189 struct rsnd_dai_platform_info *info; /* rcar_snd.h */ 190 struct rsnd_dai_stream playback; 191 struct rsnd_dai_stream capture; 192 193 unsigned int clk_master:1; 194 unsigned int bit_clk_inv:1; 195 unsigned int frm_clk_inv:1; 196 unsigned int sys_delay:1; 197 unsigned int data_alignment:1; 198 }; 199 200 #define rsnd_dai_nr(priv) ((priv)->dai_nr) 201 #define for_each_rsnd_dai(rdai, priv, i) \ 202 for (i = 0, (rdai) = rsnd_dai_get(priv, i); \ 203 i < rsnd_dai_nr(priv); \ 204 i++, (rdai) = rsnd_dai_get(priv, i)) 205 206 struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id); 207 int rsnd_dai_disconnect(struct rsnd_mod *mod); 208 int rsnd_dai_connect(struct rsnd_dai *rdai, struct rsnd_mod *mod, 209 struct rsnd_dai_stream *io); 210 int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io); 211 int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai); 212 #define rsnd_dai_get_platform_info(rdai) ((rdai)->info) 213 #define rsnd_io_to_runtime(io) ((io)->substream->runtime) 214 215 void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int cnt); 216 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional); 217 #define rsnd_dai_is_clk_master(rdai) ((rdai)->clk_master) 218 219 /* 220 * R-Car Gen1/Gen2 221 */ 222 int rsnd_gen_probe(struct platform_device *pdev, 223 struct rcar_snd_info *info, 224 struct rsnd_priv *priv); 225 void rsnd_gen_remove(struct platform_device *pdev, 226 struct rsnd_priv *priv); 227 int rsnd_gen_path_init(struct rsnd_priv *priv, 228 struct rsnd_dai *rdai, 229 struct rsnd_dai_stream *io); 230 int rsnd_gen_path_exit(struct rsnd_priv *priv, 231 struct rsnd_dai *rdai, 232 struct rsnd_dai_stream *io); 233 void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv, 234 struct rsnd_mod *mod, 235 enum rsnd_reg reg); 236 #define rsnd_is_gen1(s) (((s)->info->flags & RSND_GEN_MASK) == RSND_GEN1) 237 #define rsnd_is_gen2(s) (((s)->info->flags & RSND_GEN_MASK) == RSND_GEN2) 238 239 /* 240 * R-Car ADG 241 */ 242 int rsnd_adg_ssi_clk_stop(struct rsnd_mod *mod); 243 int rsnd_adg_ssi_clk_try_start(struct rsnd_mod *mod, unsigned int rate); 244 int rsnd_adg_probe(struct platform_device *pdev, 245 struct rcar_snd_info *info, 246 struct rsnd_priv *priv); 247 void rsnd_adg_remove(struct platform_device *pdev, 248 struct rsnd_priv *priv); 249 int rsnd_adg_set_convert_clk(struct rsnd_priv *priv, 250 struct rsnd_mod *mod, 251 unsigned int src_rate, 252 unsigned int dst_rate); 253 254 /* 255 * R-Car sound priv 256 */ 257 struct rsnd_priv { 258 259 struct device *dev; 260 struct rcar_snd_info *info; 261 spinlock_t lock; 262 263 /* 264 * below value will be filled on rsnd_gen_probe() 265 */ 266 void *gen; 267 268 /* 269 * below value will be filled on rsnd_scu_probe() 270 */ 271 void *scu; 272 int scu_nr; 273 274 /* 275 * below value will be filled on rsnd_adg_probe() 276 */ 277 void *adg; 278 279 /* 280 * below value will be filled on rsnd_ssi_probe() 281 */ 282 void *ssi; 283 int ssi_nr; 284 285 /* 286 * below value will be filled on rsnd_dai_probe() 287 */ 288 struct snd_soc_dai_driver *daidrv; 289 struct rsnd_dai *rdai; 290 int dai_nr; 291 }; 292 293 #define rsnd_priv_to_dev(priv) ((priv)->dev) 294 #define rsnd_lock(priv, flags) spin_lock_irqsave(&priv->lock, flags) 295 #define rsnd_unlock(priv, flags) spin_unlock_irqrestore(&priv->lock, flags) 296 297 /* 298 * R-Car SCU 299 */ 300 int rsnd_scu_probe(struct platform_device *pdev, 301 struct rcar_snd_info *info, 302 struct rsnd_priv *priv); 303 void rsnd_scu_remove(struct platform_device *pdev, 304 struct rsnd_priv *priv); 305 struct rsnd_mod *rsnd_scu_mod_get(struct rsnd_priv *priv, int id); 306 bool rsnd_scu_hpbif_is_enable(struct rsnd_mod *mod); 307 unsigned int rsnd_scu_get_ssi_rate(struct rsnd_priv *priv, 308 struct rsnd_mod *ssi_mod, 309 struct snd_pcm_runtime *runtime); 310 311 #define rsnd_scu_nr(priv) ((priv)->scu_nr) 312 313 /* 314 * R-Car SSI 315 */ 316 int rsnd_ssi_probe(struct platform_device *pdev, 317 struct rcar_snd_info *info, 318 struct rsnd_priv *priv); 319 void rsnd_ssi_remove(struct platform_device *pdev, 320 struct rsnd_priv *priv); 321 struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id); 322 struct rsnd_mod *rsnd_ssi_mod_get_frm_dai(struct rsnd_priv *priv, 323 int dai_id, int is_play); 324 int rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod); 325 326 #endif 327