| /* |
| * Renesas R-Car Gen1 SRU/SSI support |
| * |
| * Copyright (C) 2013 Renesas Solutions Corp. |
| * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> |
| * |
| * 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) |
| |
| /* |
| * 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, SRC_ROUTE_SEL, 0x0, 0x00); |
| RSND_GEN1_REG_MAP(gen, SRU, SRC_TMG_SEL0, 0x0, 0x08); |
| RSND_GEN1_REG_MAP(gen, SRU, SRC_TMG_SEL1, 0x0, 0x0c); |
| RSND_GEN1_REG_MAP(gen, SRU, SRC_TMG_SEL2, 0x0, 0x10); |
| RSND_GEN1_REG_MAP(gen, SRU, SRC_CTRL, 0x0, 0xc0); |
| 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, SRU, BUSIF_MODE, 0x4, 0x20); |
| RSND_GEN1_REG_MAP(gen, SRU, BUSIF_ADINR, 0x40, 0x214); |
| |
| 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); |
| } |