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 u32 rsnd_read(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg); 82 void rsnd_write(struct rsnd_priv *priv, struct rsnd_mod *mod, 83 enum rsnd_reg reg, u32 data); 84 void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg, 85 u32 mask, u32 data); 86 87 /* 88 * R-Car DMA 89 */ 90 struct rsnd_dma { 91 struct rsnd_priv *priv; 92 struct sh_dmae_slave slave; 93 struct work_struct work; 94 struct dma_chan *chan; 95 enum dma_data_direction dir; 96 int (*inquiry)(struct rsnd_dma *dma, dma_addr_t *buf, int *len); 97 int (*complete)(struct rsnd_dma *dma); 98 99 int submit_loop; 100 }; 101 102 void rsnd_dma_start(struct rsnd_dma *dma); 103 void rsnd_dma_stop(struct rsnd_dma *dma); 104 int rsnd_dma_available(struct rsnd_dma *dma); 105 int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, 106 int is_play, int id, 107 int (*inquiry)(struct rsnd_dma *dma, dma_addr_t *buf, int *len), 108 int (*complete)(struct rsnd_dma *dma)); 109 void rsnd_dma_quit(struct rsnd_priv *priv, 110 struct rsnd_dma *dma); 111 112 113 /* 114 * R-Car sound mod 115 */ 116 117 struct rsnd_mod_ops { 118 char *name; 119 int (*init)(struct rsnd_mod *mod, 120 struct rsnd_dai *rdai, 121 struct rsnd_dai_stream *io); 122 int (*quit)(struct rsnd_mod *mod, 123 struct rsnd_dai *rdai, 124 struct rsnd_dai_stream *io); 125 int (*start)(struct rsnd_mod *mod, 126 struct rsnd_dai *rdai, 127 struct rsnd_dai_stream *io); 128 int (*stop)(struct rsnd_mod *mod, 129 struct rsnd_dai *rdai, 130 struct rsnd_dai_stream *io); 131 }; 132 133 struct rsnd_mod { 134 int id; 135 struct rsnd_priv *priv; 136 struct rsnd_mod_ops *ops; 137 struct list_head list; /* connect to rsnd_dai playback/capture */ 138 struct rsnd_dma dma; 139 }; 140 141 #define rsnd_mod_to_priv(mod) ((mod)->priv) 142 #define rsnd_mod_to_dma(mod) (&(mod)->dma) 143 #define rsnd_dma_to_mod(_dma) container_of((_dma), struct rsnd_mod, dma) 144 #define rsnd_mod_id(mod) ((mod)->id) 145 #define for_each_rsnd_mod(pos, n, io) \ 146 list_for_each_entry_safe(pos, n, &(io)->head, list) 147 #define rsnd_mod_call(mod, func, rdai, io) \ 148 (!(mod) ? -ENODEV : \ 149 !((mod)->ops->func) ? 0 : \ 150 (mod)->ops->func(mod, rdai, io)) 151 152 void rsnd_mod_init(struct rsnd_priv *priv, 153 struct rsnd_mod *mod, 154 struct rsnd_mod_ops *ops, 155 int id); 156 char *rsnd_mod_name(struct rsnd_mod *mod); 157 158 /* 159 * R-Car sound DAI 160 */ 161 #define RSND_DAI_NAME_SIZE 16 162 struct rsnd_dai_stream { 163 struct list_head head; /* head of rsnd_mod list */ 164 struct snd_pcm_substream *substream; 165 int byte_pos; 166 int period_pos; 167 int byte_per_period; 168 int next_period_byte; 169 }; 170 171 struct rsnd_dai { 172 char name[RSND_DAI_NAME_SIZE]; 173 struct rsnd_dai_platform_info *info; /* rcar_snd.h */ 174 struct rsnd_dai_stream playback; 175 struct rsnd_dai_stream capture; 176 177 int clk_master:1; 178 int bit_clk_inv:1; 179 int frm_clk_inv:1; 180 int sys_delay:1; 181 int data_alignment:1; 182 }; 183 184 #define rsnd_dai_nr(priv) ((priv)->dai_nr) 185 #define for_each_rsnd_dai(rdai, priv, i) \ 186 for (i = 0, (rdai) = rsnd_dai_get(priv, i); \ 187 i < rsnd_dai_nr(priv); \ 188 i++, (rdai) = rsnd_dai_get(priv, i)) 189 190 struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id); 191 int rsnd_dai_disconnect(struct rsnd_mod *mod); 192 int rsnd_dai_connect(struct rsnd_dai *rdai, struct rsnd_mod *mod, 193 struct rsnd_dai_stream *io); 194 int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io); 195 int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai); 196 #define rsnd_dai_get_platform_info(rdai) ((rdai)->info) 197 #define rsnd_io_to_runtime(io) ((io)->substream->runtime) 198 199 void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int cnt); 200 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional); 201 202 /* 203 * R-Car Gen1/Gen2 204 */ 205 int rsnd_gen_probe(struct platform_device *pdev, 206 struct rcar_snd_info *info, 207 struct rsnd_priv *priv); 208 void rsnd_gen_remove(struct platform_device *pdev, 209 struct rsnd_priv *priv); 210 int rsnd_gen_path_init(struct rsnd_priv *priv, 211 struct rsnd_dai *rdai, 212 struct rsnd_dai_stream *io); 213 int rsnd_gen_path_exit(struct rsnd_priv *priv, 214 struct rsnd_dai *rdai, 215 struct rsnd_dai_stream *io); 216 void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv, 217 struct rsnd_mod *mod, 218 enum rsnd_reg reg); 219 #define rsnd_is_gen1(s) (((s)->info->flags & RSND_GEN_MASK) == RSND_GEN1) 220 #define rsnd_is_gen2(s) (((s)->info->flags & RSND_GEN_MASK) == RSND_GEN2) 221 222 /* 223 * R-Car ADG 224 */ 225 int rsnd_adg_ssi_clk_stop(struct rsnd_mod *mod); 226 int rsnd_adg_ssi_clk_try_start(struct rsnd_mod *mod, unsigned int rate); 227 int rsnd_adg_probe(struct platform_device *pdev, 228 struct rcar_snd_info *info, 229 struct rsnd_priv *priv); 230 void rsnd_adg_remove(struct platform_device *pdev, 231 struct rsnd_priv *priv); 232 233 /* 234 * R-Car sound priv 235 */ 236 struct rsnd_priv { 237 238 struct device *dev; 239 struct rcar_snd_info *info; 240 spinlock_t lock; 241 242 /* 243 * below value will be filled on rsnd_gen_probe() 244 */ 245 void *gen; 246 247 /* 248 * below value will be filled on rsnd_scu_probe() 249 */ 250 void *scu; 251 int scu_nr; 252 253 /* 254 * below value will be filled on rsnd_adg_probe() 255 */ 256 void *adg; 257 258 /* 259 * below value will be filled on rsnd_ssi_probe() 260 */ 261 void *ssiu; 262 263 /* 264 * below value will be filled on rsnd_dai_probe() 265 */ 266 struct snd_soc_dai_driver *daidrv; 267 struct rsnd_dai *rdai; 268 int dai_nr; 269 }; 270 271 #define rsnd_priv_to_dev(priv) ((priv)->dev) 272 #define rsnd_lock(priv, flags) spin_lock_irqsave(&priv->lock, flags) 273 #define rsnd_unlock(priv, flags) spin_unlock_irqrestore(&priv->lock, flags) 274 275 /* 276 * R-Car SCU 277 */ 278 int rsnd_scu_probe(struct platform_device *pdev, 279 struct rcar_snd_info *info, 280 struct rsnd_priv *priv); 281 void rsnd_scu_remove(struct platform_device *pdev, 282 struct rsnd_priv *priv); 283 struct rsnd_mod *rsnd_scu_mod_get(struct rsnd_priv *priv, int id); 284 bool rsnd_scu_hpbif_is_enable(struct rsnd_mod *mod); 285 #define rsnd_scu_nr(priv) ((priv)->scu_nr) 286 287 /* 288 * R-Car SSI 289 */ 290 int rsnd_ssi_probe(struct platform_device *pdev, 291 struct rcar_snd_info *info, 292 struct rsnd_priv *priv); 293 void rsnd_ssi_remove(struct platform_device *pdev, 294 struct rsnd_priv *priv); 295 struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id); 296 struct rsnd_mod *rsnd_ssi_mod_get_frm_dai(struct rsnd_priv *priv, 297 int dai_id, int is_play); 298 299 #endif 300