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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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55e5b6fd5a
Current Linux kernel is supporting regmap/regmap_field, and, it is good match for Renesas Sound Gen1/Gen2 register mapping. This patch uses regmap instead of original method for register access Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@linaro.org>
350 lines
8.6 KiB
C
350 lines
8.6 KiB
C
/*
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* Renesas R-Car Gen1 SRU/SSI support
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*
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* Copyright (C) 2013 Renesas Solutions Corp.
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* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include "rsnd.h"
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struct rsnd_gen_ops {
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int (*probe)(struct platform_device *pdev,
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struct rcar_snd_info *info,
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struct rsnd_priv *priv);
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void (*remove)(struct platform_device *pdev,
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struct rsnd_priv *priv);
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int (*path_init)(struct rsnd_priv *priv,
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struct rsnd_dai *rdai,
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struct rsnd_dai_stream *io);
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int (*path_exit)(struct rsnd_priv *priv,
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struct rsnd_dai *rdai,
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struct rsnd_dai_stream *io);
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};
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struct rsnd_gen {
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void __iomem *base[RSND_BASE_MAX];
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struct rsnd_gen_ops *ops;
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struct regmap *regmap;
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struct regmap_field *regs[RSND_REG_MAX];
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};
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#define rsnd_priv_to_gen(p) ((struct rsnd_gen *)(p)->gen)
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#define RSND_REG_SET(gen, id, reg_id, offset, _id_offset, _id_size) \
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[id] = { \
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.reg = (unsigned int)gen->base[reg_id] + offset, \
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.lsb = 0, \
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.msb = 31, \
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.id_size = _id_size, \
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.id_offset = _id_offset, \
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}
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/*
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* basic function
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*/
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static int rsnd_regmap_write32(void *context, const void *_data, size_t count)
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{
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struct rsnd_priv *priv = context;
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struct device *dev = rsnd_priv_to_dev(priv);
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u32 *data = (u32 *)_data;
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u32 val = data[1];
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void __iomem *reg = (void *)data[0];
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iowrite32(val, reg);
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dev_dbg(dev, "w %p : %08x\n", reg, val);
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return 0;
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}
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static int rsnd_regmap_read32(void *context,
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const void *_data, size_t reg_size,
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void *_val, size_t val_size)
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{
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struct rsnd_priv *priv = context;
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struct device *dev = rsnd_priv_to_dev(priv);
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u32 *data = (u32 *)_data;
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u32 *val = (u32 *)_val;
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void __iomem *reg = (void *)data[0];
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*val = ioread32(reg);
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dev_dbg(dev, "r %p : %08x\n", reg, *val);
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return 0;
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}
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static struct regmap_bus rsnd_regmap_bus = {
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.write = rsnd_regmap_write32,
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.read = rsnd_regmap_read32,
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.reg_format_endian_default = REGMAP_ENDIAN_NATIVE,
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.val_format_endian_default = REGMAP_ENDIAN_NATIVE,
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};
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u32 rsnd_read(struct rsnd_priv *priv,
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struct rsnd_mod *mod, enum rsnd_reg reg)
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{
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struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
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u32 val;
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regmap_fields_read(gen->regs[reg], rsnd_mod_id(mod), &val);
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return val;
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}
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void rsnd_write(struct rsnd_priv *priv,
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struct rsnd_mod *mod,
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enum rsnd_reg reg, u32 data)
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{
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struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
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regmap_fields_write(gen->regs[reg], rsnd_mod_id(mod), data);
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}
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void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod,
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enum rsnd_reg reg, u32 mask, u32 data)
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{
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struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
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regmap_fields_update_bits(gen->regs[reg], rsnd_mod_id(mod),
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mask, data);
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}
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/*
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* Gen2
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* will be filled in the future
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*/
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/*
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* Gen1
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*/
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static int rsnd_gen1_path_init(struct rsnd_priv *priv,
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struct rsnd_dai *rdai,
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struct rsnd_dai_stream *io)
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{
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struct rsnd_mod *mod;
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int ret;
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int id;
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/*
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* Gen1 is created by SRU/SSI, and this SRU is base module of
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* Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU)
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*
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* Easy image is..
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* Gen1 SRU = Gen2 SCU + SSIU + etc
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*
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* Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is
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* using fixed path.
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*
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* Then, SSI id = SCU id here
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*/
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/* get SSI's ID */
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mod = rsnd_ssi_mod_get_frm_dai(priv,
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rsnd_dai_id(priv, rdai),
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rsnd_dai_is_play(rdai, io));
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id = rsnd_mod_id(mod);
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/* SSI */
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mod = rsnd_ssi_mod_get(priv, id);
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ret = rsnd_dai_connect(rdai, mod, io);
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if (ret < 0)
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return ret;
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/* SCU */
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mod = rsnd_scu_mod_get(priv, id);
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ret = rsnd_dai_connect(rdai, mod, io);
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return ret;
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}
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static int rsnd_gen1_path_exit(struct rsnd_priv *priv,
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struct rsnd_dai *rdai,
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struct rsnd_dai_stream *io)
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{
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struct rsnd_mod *mod, *n;
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int ret = 0;
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/*
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* remove all mod from rdai
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*/
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for_each_rsnd_mod(mod, n, io)
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ret |= rsnd_dai_disconnect(mod);
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return ret;
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}
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/* single address mapping */
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#define RSND_GEN1_S_REG(gen, reg, id, offset) \
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RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN1_##reg, offset, 0, 9)
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/* multi address mapping */
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#define RSND_GEN1_M_REG(gen, reg, id, offset, _id_offset) \
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RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN1_##reg, offset, _id_offset, 9)
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static int rsnd_gen1_regmap_init(struct rsnd_priv *priv, struct rsnd_gen *gen)
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{
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int i;
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struct device *dev = rsnd_priv_to_dev(priv);
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struct regmap_config regc;
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struct reg_field regf[RSND_REG_MAX] = {
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RSND_GEN1_S_REG(gen, SRU, SRC_ROUTE_SEL, 0x00),
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RSND_GEN1_S_REG(gen, SRU, SRC_TMG_SEL0, 0x08),
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RSND_GEN1_S_REG(gen, SRU, SRC_TMG_SEL1, 0x0c),
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RSND_GEN1_S_REG(gen, SRU, SRC_TMG_SEL2, 0x10),
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RSND_GEN1_S_REG(gen, SRU, SRC_CTRL, 0xc0),
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RSND_GEN1_S_REG(gen, SRU, SSI_MODE0, 0xD0),
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RSND_GEN1_S_REG(gen, SRU, SSI_MODE1, 0xD4),
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RSND_GEN1_M_REG(gen, SRU, BUSIF_MODE, 0x20, 0x4),
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RSND_GEN1_M_REG(gen, SRU, BUSIF_ADINR, 0x214, 0x40),
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RSND_GEN1_S_REG(gen, ADG, BRRA, 0x00),
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RSND_GEN1_S_REG(gen, ADG, BRRB, 0x04),
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RSND_GEN1_S_REG(gen, ADG, SSICKR, 0x08),
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RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL0, 0x0c),
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RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL1, 0x10),
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RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL3, 0x18),
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RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL4, 0x1c),
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RSND_GEN1_S_REG(gen, ADG, AUDIO_CLK_SEL5, 0x20),
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RSND_GEN1_M_REG(gen, SSI, SSICR, 0x00, 0x40),
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RSND_GEN1_M_REG(gen, SSI, SSISR, 0x04, 0x40),
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RSND_GEN1_M_REG(gen, SSI, SSITDR, 0x08, 0x40),
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RSND_GEN1_M_REG(gen, SSI, SSIRDR, 0x0c, 0x40),
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RSND_GEN1_M_REG(gen, SSI, SSIWSR, 0x20, 0x40),
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};
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memset(®c, 0, sizeof(regc));
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regc.reg_bits = 32;
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regc.val_bits = 32;
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gen->regmap = devm_regmap_init(dev, &rsnd_regmap_bus, priv, ®c);
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if (IS_ERR(gen->regmap)) {
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dev_err(dev, "regmap error %ld\n", PTR_ERR(gen->regmap));
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return PTR_ERR(gen->regmap);
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}
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for (i = 0; i < RSND_REG_MAX; i++) {
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gen->regs[i] = devm_regmap_field_alloc(dev, gen->regmap, regf[i]);
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if (IS_ERR(gen->regs[i]))
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return PTR_ERR(gen->regs[i]);
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}
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return 0;
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}
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static int rsnd_gen1_probe(struct platform_device *pdev,
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struct rcar_snd_info *info,
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struct rsnd_priv *priv)
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{
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struct device *dev = rsnd_priv_to_dev(priv);
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struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
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struct resource *sru_res;
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struct resource *adg_res;
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struct resource *ssi_res;
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int ret;
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/*
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* map address
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*/
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sru_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SRU);
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adg_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_ADG);
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ssi_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SSI);
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gen->base[RSND_GEN1_SRU] = devm_ioremap_resource(dev, sru_res);
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gen->base[RSND_GEN1_ADG] = devm_ioremap_resource(dev, adg_res);
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gen->base[RSND_GEN1_SSI] = devm_ioremap_resource(dev, ssi_res);
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if (IS_ERR(gen->base[RSND_GEN1_SRU]) ||
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IS_ERR(gen->base[RSND_GEN1_ADG]) ||
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IS_ERR(gen->base[RSND_GEN1_SSI]))
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return -ENODEV;
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ret = rsnd_gen1_regmap_init(priv, gen);
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if (ret < 0)
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return ret;
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dev_dbg(dev, "Gen1 device probed\n");
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dev_dbg(dev, "SRU : %08x => %p\n", sru_res->start,
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gen->base[RSND_GEN1_SRU]);
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dev_dbg(dev, "ADG : %08x => %p\n", adg_res->start,
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gen->base[RSND_GEN1_ADG]);
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dev_dbg(dev, "SSI : %08x => %p\n", ssi_res->start,
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gen->base[RSND_GEN1_SSI]);
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return 0;
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}
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static void rsnd_gen1_remove(struct platform_device *pdev,
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struct rsnd_priv *priv)
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{
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}
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static struct rsnd_gen_ops rsnd_gen1_ops = {
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.probe = rsnd_gen1_probe,
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.remove = rsnd_gen1_remove,
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.path_init = rsnd_gen1_path_init,
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.path_exit = rsnd_gen1_path_exit,
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};
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/*
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* Gen
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*/
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int rsnd_gen_path_init(struct rsnd_priv *priv,
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struct rsnd_dai *rdai,
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struct rsnd_dai_stream *io)
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{
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struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
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return gen->ops->path_init(priv, rdai, io);
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}
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int rsnd_gen_path_exit(struct rsnd_priv *priv,
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struct rsnd_dai *rdai,
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struct rsnd_dai_stream *io)
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{
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struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
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return gen->ops->path_exit(priv, rdai, io);
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}
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int rsnd_gen_probe(struct platform_device *pdev,
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struct rcar_snd_info *info,
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struct rsnd_priv *priv)
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{
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struct device *dev = rsnd_priv_to_dev(priv);
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struct rsnd_gen *gen;
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gen = devm_kzalloc(dev, sizeof(*gen), GFP_KERNEL);
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if (!gen) {
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dev_err(dev, "GEN allocate failed\n");
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return -ENOMEM;
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}
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if (rsnd_is_gen1(priv))
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gen->ops = &rsnd_gen1_ops;
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if (!gen->ops) {
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dev_err(dev, "unknown generation R-Car sound device\n");
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return -ENODEV;
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}
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priv->gen = gen;
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return gen->ops->probe(pdev, info, priv);
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}
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void rsnd_gen_remove(struct platform_device *pdev,
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struct rsnd_priv *priv)
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{
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struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
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gen->ops->remove(pdev, priv);
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}
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