/* * Renesas R-Car Gen1 SRU/SSI support * * Copyright (C) 2013 Renesas Solutions Corp. * Kuninori Morimoto * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include "rsnd.h" struct rsnd_gen_ops { int (*path_init)(struct rsnd_priv *priv, struct rsnd_dai *rdai, struct rsnd_dai_stream *io); int (*path_exit)(struct rsnd_priv *priv, struct rsnd_dai *rdai, struct rsnd_dai_stream *io); }; struct rsnd_gen_reg_map { int index; /* -1 : not supported */ u32 offset_id; /* offset of ssi0, ssi1, ssi2... */ u32 offset_adr; /* offset of SSICR, SSISR, ... */ }; struct rsnd_gen { void __iomem *base[RSND_BASE_MAX]; struct rsnd_gen_reg_map reg_map[RSND_REG_MAX]; struct rsnd_gen_ops *ops; }; #define rsnd_priv_to_gen(p) ((struct rsnd_gen *)(p)->gen) #define rsnd_is_gen1(s) ((s)->info->flags & RSND_GEN1) #define rsnd_is_gen2(s) ((s)->info->flags & RSND_GEN2) /* * Gen2 * will be filled in the future */ /* * Gen1 */ static int rsnd_gen1_path_init(struct rsnd_priv *priv, struct rsnd_dai *rdai, struct rsnd_dai_stream *io) { struct rsnd_mod *mod; int ret; int id; /* * Gen1 is created by SRU/SSI, and this SRU is base module of * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU) * * Easy image is.. * Gen1 SRU = Gen2 SCU + SSIU + etc * * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is * using fixed path. * * Then, SSI id = SCU id here */ /* get SSI's ID */ mod = rsnd_ssi_mod_get_frm_dai(priv, rsnd_dai_id(priv, rdai), rsnd_dai_is_play(rdai, io)); id = rsnd_mod_id(mod); /* SSI */ mod = rsnd_ssi_mod_get(priv, id); ret = rsnd_dai_connect(rdai, mod, io); if (ret < 0) return ret; /* SCU */ mod = rsnd_scu_mod_get(priv, id); ret = rsnd_dai_connect(rdai, mod, io); return ret; } static int rsnd_gen1_path_exit(struct rsnd_priv *priv, struct rsnd_dai *rdai, struct rsnd_dai_stream *io) { struct rsnd_mod *mod, *n; int ret = 0; /* * remove all mod from rdai */ for_each_rsnd_mod(mod, n, io) ret |= rsnd_dai_disconnect(mod); return ret; } static struct rsnd_gen_ops rsnd_gen1_ops = { .path_init = rsnd_gen1_path_init, .path_exit = rsnd_gen1_path_exit, }; #define RSND_GEN1_REG_MAP(g, s, i, oi, oa) \ do { \ (g)->reg_map[RSND_REG_##i].index = RSND_GEN1_##s; \ (g)->reg_map[RSND_REG_##i].offset_id = oi; \ (g)->reg_map[RSND_REG_##i].offset_adr = oa; \ } while (0) static void rsnd_gen1_reg_map_init(struct rsnd_gen *gen) { RSND_GEN1_REG_MAP(gen, SRU, SSI_MODE0, 0x0, 0xD0); RSND_GEN1_REG_MAP(gen, SRU, SSI_MODE1, 0x0, 0xD4); RSND_GEN1_REG_MAP(gen, ADG, BRRA, 0x0, 0x00); RSND_GEN1_REG_MAP(gen, ADG, BRRB, 0x0, 0x04); RSND_GEN1_REG_MAP(gen, ADG, SSICKR, 0x0, 0x08); RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL0, 0x0, 0x0c); RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL1, 0x0, 0x10); RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL3, 0x0, 0x18); RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL4, 0x0, 0x1c); RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL5, 0x0, 0x20); RSND_GEN1_REG_MAP(gen, SSI, SSICR, 0x40, 0x00); RSND_GEN1_REG_MAP(gen, SSI, SSISR, 0x40, 0x04); RSND_GEN1_REG_MAP(gen, SSI, SSITDR, 0x40, 0x08); RSND_GEN1_REG_MAP(gen, SSI, SSIRDR, 0x40, 0x0c); RSND_GEN1_REG_MAP(gen, SSI, SSIWSR, 0x40, 0x20); } static int rsnd_gen1_probe(struct platform_device *pdev, struct rcar_snd_info *info, struct rsnd_priv *priv) { struct device *dev = rsnd_priv_to_dev(priv); struct rsnd_gen *gen = rsnd_priv_to_gen(priv); struct resource *sru_res; struct resource *adg_res; struct resource *ssi_res; /* * map address */ sru_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SRU); adg_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_ADG); ssi_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SSI); gen->base[RSND_GEN1_SRU] = devm_ioremap_resource(dev, sru_res); gen->base[RSND_GEN1_ADG] = devm_ioremap_resource(dev, adg_res); gen->base[RSND_GEN1_SSI] = devm_ioremap_resource(dev, ssi_res); if (IS_ERR(gen->base[RSND_GEN1_SRU]) || IS_ERR(gen->base[RSND_GEN1_ADG]) || IS_ERR(gen->base[RSND_GEN1_SSI])) return -ENODEV; gen->ops = &rsnd_gen1_ops; rsnd_gen1_reg_map_init(gen); dev_dbg(dev, "Gen1 device probed\n"); dev_dbg(dev, "SRU : %08x => %p\n", sru_res->start, gen->base[RSND_GEN1_SRU]); dev_dbg(dev, "ADG : %08x => %p\n", adg_res->start, gen->base[RSND_GEN1_ADG]); dev_dbg(dev, "SSI : %08x => %p\n", ssi_res->start, gen->base[RSND_GEN1_SSI]); return 0; } static void rsnd_gen1_remove(struct platform_device *pdev, struct rsnd_priv *priv) { } /* * Gen */ int rsnd_gen_path_init(struct rsnd_priv *priv, struct rsnd_dai *rdai, struct rsnd_dai_stream *io) { struct rsnd_gen *gen = rsnd_priv_to_gen(priv); return gen->ops->path_init(priv, rdai, io); } int rsnd_gen_path_exit(struct rsnd_priv *priv, struct rsnd_dai *rdai, struct rsnd_dai_stream *io) { struct rsnd_gen *gen = rsnd_priv_to_gen(priv); return gen->ops->path_exit(priv, rdai, io); } void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg) { struct rsnd_gen *gen = rsnd_priv_to_gen(priv); struct device *dev = rsnd_priv_to_dev(priv); int index; u32 offset_id, offset_adr; if (reg >= RSND_REG_MAX) { dev_err(dev, "rsnd_reg reg error\n"); return NULL; } index = gen->reg_map[reg].index; offset_id = gen->reg_map[reg].offset_id; offset_adr = gen->reg_map[reg].offset_adr; if (index < 0) { dev_err(dev, "unsupported reg access %d\n", reg); return NULL; } if (offset_id && mod) offset_id *= rsnd_mod_id(mod); /* * index/offset were set on gen1/gen2 */ return gen->base[index] + offset_id + offset_adr; } int rsnd_gen_probe(struct platform_device *pdev, struct rcar_snd_info *info, struct rsnd_priv *priv) { struct device *dev = rsnd_priv_to_dev(priv); struct rsnd_gen *gen; int i; gen = devm_kzalloc(dev, sizeof(*gen), GFP_KERNEL); if (!gen) { dev_err(dev, "GEN allocate failed\n"); return -ENOMEM; } priv->gen = gen; /* * see * rsnd_reg_get() * rsnd_gen_probe() */ for (i = 0; i < RSND_REG_MAX; i++) gen->reg_map[i].index = -1; /* * init each module */ if (rsnd_is_gen1(priv)) return rsnd_gen1_probe(pdev, info, priv); dev_err(dev, "unknown generation R-Car sound device\n"); return -ENODEV; } void rsnd_gen_remove(struct platform_device *pdev, struct rsnd_priv *priv) { if (rsnd_is_gen1(priv)) rsnd_gen1_remove(pdev, priv); }