| /* |
| * 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 (*probe)(struct platform_device *pdev, |
| struct rcar_snd_info *info, |
| struct rsnd_priv *priv); |
| void (*remove)(struct platform_device *pdev, |
| struct rsnd_priv *priv); |
| 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 { |
| void __iomem *base[RSND_BASE_MAX]; |
| |
| struct rsnd_gen_ops *ops; |
| |
| struct regmap *regmap; |
| struct regmap_field *regs[RSND_REG_MAX]; |
| }; |
| |
| #define rsnd_priv_to_gen(p) ((struct rsnd_gen *)(p)->gen) |
| |
| #define RSND_REG_SET(gen, id, reg_id, offset, _id_offset, _id_size) \ |
| [id] = { \ |
| .reg = (unsigned int)gen->base[reg_id] + offset, \ |
| .lsb = 0, \ |
| .msb = 31, \ |
| .id_size = _id_size, \ |
| .id_offset = _id_offset, \ |
| } |
| |
| /* |
| * basic function |
| */ |
| static int rsnd_regmap_write32(void *context, const void *_data, size_t count) |
| { |
| struct rsnd_priv *priv = context; |
| struct device *dev = rsnd_priv_to_dev(priv); |
| u32 *data = (u32 *)_data; |
| u32 val = data[1]; |
| void __iomem *reg = (void *)data[0]; |
| |
| iowrite32(val, reg); |
| |
| dev_dbg(dev, "w %p : %08x\n", reg, val); |
| |
| return 0; |
| } |
| |
| static int rsnd_regmap_read32(void *context, |
| const void *_data, size_t reg_size, |
| void *_val, size_t val_size) |
| { |
| struct rsnd_priv *priv = context; |
| struct device *dev = rsnd_priv_to_dev(priv); |
| u32 *data = (u32 *)_data; |
| u32 *val = (u32 *)_val; |
| void __iomem *reg = (void *)data[0]; |
| |
| *val = ioread32(reg); |
| |
| dev_dbg(dev, "r %p : %08x\n", reg, *val); |
| |
| return 0; |
| } |
| |
| static struct regmap_bus rsnd_regmap_bus = { |
| .write = rsnd_regmap_write32, |
| .read = rsnd_regmap_read32, |
| .reg_format_endian_default = REGMAP_ENDIAN_NATIVE, |
| .val_format_endian_default = REGMAP_ENDIAN_NATIVE, |
| }; |
| |
| u32 rsnd_read(struct rsnd_priv *priv, |
| struct rsnd_mod *mod, enum rsnd_reg reg) |
| { |
| struct rsnd_gen *gen = rsnd_priv_to_gen(priv); |
| u32 val; |
| |
| regmap_fields_read(gen->regs[reg], rsnd_mod_id(mod), &val); |
| |
| return val; |
| } |
| |
| void rsnd_write(struct rsnd_priv *priv, |
| struct rsnd_mod *mod, |
| enum rsnd_reg reg, u32 data) |
| { |
| struct rsnd_gen *gen = rsnd_priv_to_gen(priv); |
| |
| regmap_fields_write(gen->regs[reg], rsnd_mod_id(mod), data); |
| } |
| |
| void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod, |
| enum rsnd_reg reg, u32 mask, u32 data) |
| { |
| struct rsnd_gen *gen = rsnd_priv_to_gen(priv); |
| |
| regmap_fields_update_bits(gen->regs[reg], rsnd_mod_id(mod), |
| mask, data); |
| } |
| |
| /* |
| * 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; |
| } |
| |
| /* single address mapping */ |
| #define RSND_GEN1_S_REG(gen, reg, id, offset) \ |
| RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN1_##reg, offset, 0, 9) |
| |
| /* multi address mapping */ |
| #define RSND_GEN1_M_REG(gen, reg, id, offset, _id_offset) \ |
| RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN1_##reg, offset, _id_offset, 9) |
| |
| static int rsnd_gen1_regmap_init(struct rsnd_priv *priv, struct rsnd_gen *gen) |
| { |
| int i; |
| struct device *dev = rsnd_priv_to_dev(priv); |
| struct regmap_config regc; |
| struct reg_field regf[RSND_REG_MAX] = { |
| RSND_GEN1_S_REG(gen, SRU, SRC_ROUTE_SEL, 0x00), |
| RSND_GEN1_S_REG(gen, SRU, SRC_TMG_SEL0, 0x08), |
| RSND_GEN1_S_REG(gen, SRU, SRC_TMG_SEL1, 0x0c), |
| RSND_GEN1_S_REG(gen, SRU, SRC_TMG_SEL2, 0x10), |
| RSND_GEN1_S_REG(gen, SRU, SRC_CTRL, 0xc0), |
| RSND_GEN1_S_REG(gen, SRU, SSI_MODE0, 0xD0), |
| RSND_GEN1_S_REG(gen, SRU, SSI_MODE1, 0xD4), |
| RSND_GEN1_M_REG(gen, SRU, BUSIF_MODE, 0x20, 0x4), |
| RSND_GEN1_M_REG(gen, SRU, BUSIF_ADINR, 0x214, 0x40), |
| |
| RSND_GEN1_S_REG(gen, ADG, BRRA, 0x00), |
| RSND_GEN1_S_REG(gen, ADG, BRRB, 0x04), |
| RSND_GEN1_S_REG(gen, ADG, SSICKR, 0x08), |
| RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL0, 0x0c), |
| RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL1, 0x10), |
| RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL3, 0x18), |
| RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL4, 0x1c), |
| RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL5, 0x20), |
| |
| RSND_GEN1_M_REG(gen, SSI, SSICR, 0x00, 0x40), |
| RSND_GEN1_M_REG(gen, SSI, SSISR, 0x04, 0x40), |
| RSND_GEN1_M_REG(gen, SSI, SSITDR, 0x08, 0x40), |
| RSND_GEN1_M_REG(gen, SSI, SSIRDR, 0x0c, 0x40), |
| RSND_GEN1_M_REG(gen, SSI, SSIWSR, 0x20, 0x40), |
| }; |
| |
| memset(®c, 0, sizeof(regc)); |
| regc.reg_bits = 32; |
| regc.val_bits = 32; |
| |
| gen->regmap = devm_regmap_init(dev, &rsnd_regmap_bus, priv, ®c); |
| if (IS_ERR(gen->regmap)) { |
| dev_err(dev, "regmap error %ld\n", PTR_ERR(gen->regmap)); |
| return PTR_ERR(gen->regmap); |
| } |
| |
| for (i = 0; i < RSND_REG_MAX; i++) { |
| gen->regs[i] = devm_regmap_field_alloc(dev, gen->regmap, regf[i]); |
| if (IS_ERR(gen->regs[i])) |
| return PTR_ERR(gen->regs[i]); |
| |
| } |
| |
| return 0; |
| } |
| |
| 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; |
| int ret; |
| |
| /* |
| * 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; |
| |
| ret = rsnd_gen1_regmap_init(priv, gen); |
| if (ret < 0) |
| return ret; |
| |
| 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) |
| { |
| } |
| |
| static struct rsnd_gen_ops rsnd_gen1_ops = { |
| .probe = rsnd_gen1_probe, |
| .remove = rsnd_gen1_remove, |
| .path_init = rsnd_gen1_path_init, |
| .path_exit = rsnd_gen1_path_exit, |
| }; |
| |
| /* |
| * 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); |
| } |
| |
| 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; |
| |
| gen = devm_kzalloc(dev, sizeof(*gen), GFP_KERNEL); |
| if (!gen) { |
| dev_err(dev, "GEN allocate failed\n"); |
| return -ENOMEM; |
| } |
| |
| if (rsnd_is_gen1(priv)) |
| gen->ops = &rsnd_gen1_ops; |
| |
| if (!gen->ops) { |
| dev_err(dev, "unknown generation R-Car sound device\n"); |
| return -ENODEV; |
| } |
| |
| priv->gen = gen; |
| |
| return gen->ops->probe(pdev, info, priv); |
| } |
| |
| void rsnd_gen_remove(struct platform_device *pdev, |
| struct rsnd_priv *priv) |
| { |
| struct rsnd_gen *gen = rsnd_priv_to_gen(priv); |
| |
| gen->ops->remove(pdev, priv); |
| } |