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/*
* 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 {
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,
};
static int rsnd_is_accessible_reg(struct rsnd_priv *priv,
struct rsnd_gen *gen, enum rsnd_reg reg)
{
if (!gen->regs[reg]) {
struct device *dev = rsnd_priv_to_dev(priv);
dev_err(dev, "unsupported register access %x\n", reg);
return 0;
}
return 1;
}
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;
if (!rsnd_is_accessible_reg(priv, gen, reg))
return 0;
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);
if (!rsnd_is_accessible_reg(priv, gen, reg))
return;
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);
if (!rsnd_is_accessible_reg(priv, gen, reg))
return;
regmap_fields_update_bits(gen->regs[reg], rsnd_mod_id(mod),
mask, data);
}
static int rsnd_gen_regmap_init(struct rsnd_priv *priv,
struct rsnd_gen *gen,
struct reg_field *regf)
{
int i;
struct device *dev = rsnd_priv_to_dev(priv);
struct regmap_config regc;
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] = NULL;
if (!regf[i].reg)
continue;
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;
}
/*
* Gen2
*/
/* single address mapping */
#define RSND_GEN2_S_REG(gen, reg, id, offset) \
RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN2_##reg, offset, 0, 10)
/* multi address mapping */
#define RSND_GEN2_M_REG(gen, reg, id, offset, _id_offset) \
RSND_REG_SET(gen, RSND_REG_##id, RSND_GEN2_##reg, offset, _id_offset, 10)
static int rsnd_gen2_regmap_init(struct rsnd_priv *priv, struct rsnd_gen *gen)
{
struct reg_field regf[RSND_REG_MAX] = {
RSND_GEN2_S_REG(gen, SSIU, SSI_MODE0, 0x800),
RSND_GEN2_S_REG(gen, SSIU, SSI_MODE1, 0x804),
/* FIXME: it needs SSI_MODE2/3 in the future */
RSND_GEN2_M_REG(gen, SSIU, SSI_BUSIF_MODE, 0x0, 0x80),
RSND_GEN2_M_REG(gen, SSIU, SSI_BUSIF_ADINR,0x4, 0x80),
RSND_GEN2_M_REG(gen, SSIU, SSI_CTRL, 0x10, 0x80),
RSND_GEN2_M_REG(gen, SSIU, INT_ENABLE, 0x18, 0x80),
RSND_GEN2_M_REG(gen, SCU, SRC_BUSIF_MODE, 0x0, 0x20),
RSND_GEN2_M_REG(gen, SCU, SRC_ROUTE_MODE0,0xc, 0x20),
RSND_GEN2_M_REG(gen, SCU, SRC_CTRL, 0x10, 0x20),
RSND_GEN2_M_REG(gen, SCU, CMD_ROUTE_SLCT, 0x18c, 0x20),
RSND_GEN2_M_REG(gen, SCU, CMD_CTRL, 0x190, 0x20),
RSND_GEN2_M_REG(gen, SCU, SRC_SWRSR, 0x200, 0x40),
RSND_GEN2_M_REG(gen, SCU, SRC_SRCIR, 0x204, 0x40),
RSND_GEN2_M_REG(gen, SCU, SRC_ADINR, 0x214, 0x40),
RSND_GEN2_M_REG(gen, SCU, SRC_IFSCR, 0x21c, 0x40),
RSND_GEN2_M_REG(gen, SCU, SRC_IFSVR, 0x220, 0x40),
RSND_GEN2_M_REG(gen, SCU, SRC_SRCCR, 0x224, 0x40),
RSND_GEN2_M_REG(gen, SCU, SRC_BSDSR, 0x22c, 0x40),
RSND_GEN2_M_REG(gen, SCU, SRC_BSISR, 0x238, 0x40),
RSND_GEN2_M_REG(gen, SCU, DVC_SWRSR, 0xe00, 0x100),
RSND_GEN2_M_REG(gen, SCU, DVC_DVUIR, 0xe04, 0x100),
RSND_GEN2_M_REG(gen, SCU, DVC_ADINR, 0xe08, 0x100),
RSND_GEN2_M_REG(gen, SCU, DVC_DVUCR, 0xe10, 0x100),
RSND_GEN2_M_REG(gen, SCU, DVC_ZCMCR, 0xe14, 0x100),
RSND_GEN2_M_REG(gen, SCU, DVC_VOL0R, 0xe28, 0x100),
RSND_GEN2_M_REG(gen, SCU, DVC_VOL1R, 0xe2c, 0x100),
RSND_GEN2_M_REG(gen, SCU, DVC_DVUER, 0xe48, 0x100),
RSND_GEN2_S_REG(gen, ADG, BRRA, 0x00),
RSND_GEN2_S_REG(gen, ADG, BRRB, 0x04),
RSND_GEN2_S_REG(gen, ADG, SSICKR, 0x08),
RSND_GEN2_S_REG(gen, ADG, AUDIO_CLK_SEL0, 0x0c),
RSND_GEN2_S_REG(gen, ADG, AUDIO_CLK_SEL1, 0x10),
RSND_GEN2_S_REG(gen, ADG, AUDIO_CLK_SEL2, 0x14),
RSND_GEN2_S_REG(gen, ADG, DIV_EN, 0x30),
RSND_GEN2_S_REG(gen, ADG, SRCIN_TIMSEL0, 0x34),
RSND_GEN2_S_REG(gen
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