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 303