gen.c
/*
* 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.
*/
/*
* #define DEBUG
*
* you can also add below in
* ${LINUX}/drivers/base/regmap/regmap.c
* for regmap debug
*
* #define LOG_DEVICE "xxxx.rcar_sound"
*/
#include "rsnd.h"
struct rsnd_gen {
void __iomem *base[RSND_BASE_MAX];
struct rsnd_gen_ops *ops;
struct regmap *regmap[RSND_BASE_MAX];
struct regmap_field *regs[RSND_REG_MAX];
};
#define rsnd_priv_to_gen(p) ((struct rsnd_gen *)(p)->gen)
struct rsnd_regmap_field_conf {
int idx;
unsigned int reg_offset;
unsigned int id_offset;
};
#define RSND_REG_SET(id, offset, _id_offset) \
{ \
.idx = id, \
.reg_offset = offset, \
.id_offset = _id_offset, \
}
/* single address mapping */
#define RSND_GEN_S_REG(id, offset) \
RSND_REG_SET(RSND_REG_##id, offset, 0)
/* multi address mapping */
#define RSND_GEN_M_REG(id, offset, _id_offset) \
RSND_REG_SET(RSND_REG_##id, offset, _id_offset)
/*
* basic function
*/
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 device *dev = rsnd_priv_to_dev(priv);
struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
u32 val;
if (!rsnd_is_accessible_reg(priv, gen, reg))
return 0;
dev_dbg(dev, "r %s[%d] - %4d : %08x\n",
rsnd_mod_name(mod), rsnd_mod_id(mod), reg, 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 device *dev = rsnd_priv_to_dev(priv);
struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
if (!rsnd_is_accessible_reg(priv, gen, reg))
return;
dev_dbg(dev, "w %s[%d] - %4d : %08x\n",
rsnd_mod_name(mod), rsnd_mod_id(mod), reg, data);
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 device *dev = rsnd_priv_to_dev(priv);
struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
if (!rsnd_is_accessible_reg(priv, gen, reg))
return;
dev_dbg(dev, "b %s[%d] - %4d : %08x/%08x\n",
rsnd_mod_name(mod), rsnd_mod_id(mod), reg, data, mask);
regmap_fields_update_bits(gen->regs[reg], rsnd_mod_id(mod),
mask, data);
}
#define rsnd_gen_regmap_init(priv, id_size, reg_id, conf) \
_rsnd_gen_regmap_init(priv, id_size, reg_id, conf, ARRAY_SIZE(conf))
static int _rsnd_gen_regmap_init(struct rsnd_priv *priv,
int id_size,
int reg_id,
struct rsnd_regmap_field_conf *conf,
int conf_size)
{
struct platform_device *pdev = rsnd_priv_to_pdev(priv);
struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
struct device *dev = rsnd_priv_to_dev(priv);
struct resource *res;
struct regmap_config regc;
struct regmap_field *regs;
struct regmap *regmap;
struct reg_field regf;
void __iomem *base;
int i;
memset(®c, 0, sizeof(regc));
regc.reg_bits = 32;
regc.val_bits = 32;
regc.reg_stride = 4;
res = platform_get_resource(pdev, IORESOURCE_MEM, reg_id);
if (!res)
return -ENODEV;
base = devm_ioremap_resource(dev, res);
if (IS_ERR(base))
return PTR_ERR(base);
regmap = devm_regmap_init_mmio(dev, base, ®c);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
gen->base[reg_id] = base;
gen->regmap[reg_id] = regmap;
for (i = 0; i < conf_size; i++) {
regf.reg = conf[i].reg_offset;
regf.id_offset = conf[i].id_offset;
regf.lsb = 0;
regf.msb = 31;
regf.id_size = id_size;
regs = devm_regmap_field_alloc(dev, regmap, regf);
if (IS_ERR(regs))
return PTR_ERR(regs);
gen->regs[conf[i].idx] = regs;
}
return 0;
}
/*
* DMA read/write register offset
*
* RSND_xxx_I_N for Audio DMAC input
* RSND_xxx_O_N for Audio DMAC output
* RSND_xxx_I_P for Audio DMAC peri peri input
* RSND_xxx_O_P for Audio DMAC peri peri output
*
* ex) R-Car H2 case
* mod / DMAC in / DMAC out / DMAC PP in / DMAC pp out
* SSI : 0xec541000 / 0xec241008 / 0xec24100c
* SSIU: 0xec541000 / 0xec100000 / 0xec100000 / 0xec400000 / 0xec400000
* SCU : 0xec500000 / 0xec000000 / 0xec004000 / 0xec300000 / 0xec304000
* CMD : 0xec500000 / / 0xec008000 0xec308000
*/
#define RDMA_SSI_I_N(addr, i) (addr ##_reg - 0x00300000 + (0x40 * i) + 0x8)
#define RDMA_SSI_O_N(addr, i) (addr ##_reg - 0x00300000 + (0x40 * i) + 0xc)
#define RDMA_SSIU_I_N(addr, i) (addr ##_reg - 0x00441000 + (0x1000 * i))
#define RDMA_SSIU_O_N(addr, i) (addr ##_reg - 0x00441000 + (0x1000 * i))
#define RDMA_SSIU_I_P(addr, i) (addr ##_reg - 0x00141000 + (0x1000 * i))
#define RDMA_SSIU_O_P(addr, i) (addr ##_reg - 0x00141000 + (0x1000 * i))
#define RDMA_SRC_I_N(addr, i) (addr ##_reg - 0x00500000 + (0x400 * i))
#define RDMA_SRC_O_N(addr, i) (addr ##_reg - 0x004fc000 + (0x400 * i))
#define RDMA_SRC_I_P(addr, i) (addr ##_reg - 0x00200000 + (0x400 * i))
#define RDMA_SRC_O_P(addr, i) (addr ##_reg - 0x001fc000 + (0x400 * i))
#define RDMA_CMD_O_N(addr, i) (addr ##_reg - 0x004f8000 + (0x400 * i))
#define RDMA_CMD_O_P(addr, i) (addr ##_reg - 0x001f8000 + (0x400 * i))
static dma_addr_t
rsnd_gen2_dma_addr(struct rsnd_priv *priv,
struct rsnd_mod *mod,
int is_play, int is_from)
{
struct platform_device *pdev = rsnd_priv_to_pdev(priv);
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
dma_addr_t ssi_reg = platform_get_resource(pdev,
IORESOURCE_MEM, RSND_GEN2_SSI)->start;
dma_addr_t src_reg = platform_get_resource(pdev,
IORESOURCE_MEM, RSND_GEN2_SCU)->start;
int is_ssi = !!(rsnd_io_to_mod_ssi(io) == mod);
int use_src = !!rsnd_io_to_mod_src(io);
int use_dvc = !!rsnd_io_to_mod_dvc(io);
int id = rsnd_mod_id(mod);
struct dma_addr {
dma_addr_t out_addr;
dma_addr_t in_addr;
} dma_addrs[3][2][3] = {
/* SRC */
{{{ 0, 0 },
/* Capture */
{ RDMA_SRC_O_N(src, id), RDMA_SRC_I_P(src, id) },
{ RDMA_CMD_O_N(src, id), RDMA_SRC_I_P(src, id) } },
/* Playback */
{{ 0, 0, },
{ RDMA_SRC_O_P(src, id), RDMA_SRC_I_N(src, id) },
{ RDMA_CMD_O_P(src, id), RDMA_SRC_I_N(src, id) } }
},
/* SSI */
/* Capture */
{{{ RDMA_SSI_O_N(ssi, id), 0 },
{ RDMA_SSIU_O_P(ssi, id), 0 },
{ RDMA_SSIU_O_P(ssi, id), 0 } },
/* Playback */
{{ 0, RDMA_SSI_I_N(ssi, id) },
{ 0, RDMA_SSIU_I_P(ssi, id) },
{ 0, RDMA_SSIU_I_P(ssi, id) } }
},
/* SSIU */
/* Capture */
{{{ RDMA_SSIU_O_N(ssi, id), 0 },
{ RDMA_SSIU_O_P(ssi, id), 0 },
{ RDMA_SSIU_O_P(ssi, id), 0 } },
/* Playback */
{{ 0, RDMA_SSIU_I_N(ssi, id) },
{ 0, RDMA_SSIU_I_P(ssi, id) },
{ 0, RDMA_SSIU_I_P(ssi, id) } } },
};
/* it shouldn't happen */
if (use_dvc && !use_src)
dev_err(dev, "DVC is selected without SRC\n");
/* use SSIU or SSI ? */
if (is_ssi && (0 == strcmp(rsnd_mod_dma_name(mod), "ssiu")))
is_ssi++;
return (is_from) ?
dma_addrs[is_ssi][is_play][use_src + use_dvc].out_addr :
dma_addrs[is_ssi][is_play][use_src + use_dvc].in_addr;
}
dma_addr_t rsnd_gen_dma_addr(struct rsnd_priv *priv,
struct rsnd_mod *mod,
int is_play, int is_from)
{
/*
* gen1 uses default DMA addr
*/
if (rsnd_is_gen1(priv))
return 0;
if (!mod)
return 0;
return rsnd_gen2_dma_addr(priv, mod, is_play, is_from);
}
/*
* Gen2
*/
static int rsnd_gen2_probe(struct platform_device *pdev,
struct rsnd_priv *priv)
{
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_regmap_field_conf conf_ssiu[] = {
RSND_GEN_S_REG(SSI_MODE0, 0x800),
RSND_GEN_S_REG(SSI_MODE1, 0x804),
/* FIXME: it needs SSI_MODE2/3 in the future */
RSND_GEN_M_REG(SSI_BUSIF_MODE, 0x0, 0x80),
RSND_GEN_M_REG(SSI_BUSIF_ADINR, 0x4, 0x80),
RSND_GEN_M_REG(BUSIF_DALIGN, 0x8, 0x80),
RSND_GEN_M_REG(SSI_CTRL, 0x10, 0x80),
RSND_GEN_M_REG(INT_ENABLE, 0x18, 0x80),
};
struct rsnd_regmap_field_conf conf_scu[] = {
RSND_GEN_M_REG(SRC_BUSIF_MODE, 0x0, 0x20),
RSND_GEN_M_REG(SRC_ROUTE_MODE0, 0xc, 0x20),
RSND_GEN_M_REG(SRC_CTRL, 0x10, 0x20),
RSND_GEN_M_REG(CMD_ROUTE_SLCT, 0x18c, 0x20),
RSND_GEN_M_REG(CMD_CTRL, 0x190, 0x20),
RSND_GEN_M_REG(SRC_SWRSR, 0x200, 0x40),
RSND_GEN_M_REG(SRC_SRCIR, 0x204, 0x40),
RSND_GEN_M_REG(SRC_ADINR, 0x214, 0x40),
RSND_GEN_M_REG(SRC_IFSCR, 0x21c, 0x40),
RSND_GEN_M_REG(SRC_IFSVR, 0x220, 0x40),
RSND_GEN_M_REG(SRC_SRCCR, 0x224, 0x40),
RSND_GEN_M_REG(SRC_BSDSR, 0x22c, 0x40),
RSND_GEN_M_REG(SRC_BSISR, 0x238, 0x40),
RSND_GEN_M_REG(DVC_SWRSR, 0xe00, 0x100),
RSND_GEN_M_REG(DVC_DVUIR, 0xe04, 0x100),
RSND_GEN_M_REG(DVC_ADINR, 0xe08, 0x100),
RSND_GEN_M_REG(DVC_DVUCR, 0xe10, 0x100),
RSND_GEN_M_REG(DVC_ZCMCR, 0xe14, 0x100),
RSND_GEN_M_REG(DVC_VRCTR, 0xe18, 0x100),
RSND_GEN_M_REG(DVC_VRPDR, 0xe1c, 0x100),
RSND_GEN_M_REG(DVC_VRDBR, 0xe20, 0x100),
RSND_GEN_M_REG(DVC_VOL0R, 0xe28, 0x100),
RSND_GEN_M_REG(DVC_VOL1R, 0xe2c, 0x100),
RSND_GEN_M_REG(DVC_DVUER, 0xe48, 0x100),
};
struct rsnd_regmap_field_conf conf_adg[] = {
RSND_GEN_S_REG(BRRA, 0x00),
RSND_GEN_S_REG(BRRB, 0x04),
RSND_GEN_S_REG(SSICKR, 0x08),
RSND_GEN_S_REG(AUDIO_CLK_SEL0, 0x0c),
RSND_GEN_S_REG(AUDIO_CLK_SEL1, 0x10),
RSND_GEN_S_REG(AUDIO_CLK_SEL2, 0x14),
RSND_GEN_S_REG(DIV_EN, 0x30),
RSND_GEN_S_REG(SRCIN_TIMSEL0, 0x34),
RSND_GEN_S_REG(SRCIN_TIMSEL1, 0x38),
RSND_GEN_S_REG(SRCIN_TIMSEL2, 0x3c),
RSND_GEN_S_REG(SRCIN_TIMSEL3, 0x40),
RSND_GEN_S_REG(SRCIN_TIMSEL4, 0x44),
RSND_GEN_S_REG(SRCOUT_TIMSEL0, 0x48),
RSND_GEN_S_REG(SRCOUT_TIMSEL1, 0x4c),
RSND_GEN_S_REG(SRCOUT_TIMSEL2, 0x50),
RSND_GEN_S_REG(SRCOUT_TIMSEL3, 0x54),
RSND_GEN_S_REG(SRCOUT_TIMSEL4, 0x58),
RSND_GEN_S_REG(CMDOUT_TIMSEL, 0x5c),
};
struct rsnd_regmap_field_conf conf_ssi[] = {
RSND_GEN_M_REG(SSICR, 0x00, 0x40),
RSND_GEN_M_REG(SSISR, 0x04, 0x40),
RSND_GEN_M_REG(SSITDR, 0x08, 0x40),
RSND_GEN_M_REG(SSIRDR, 0x0c, 0x40),
RSND_GEN_M_REG(SSIWSR, 0x20, 0x40),
};
int ret_ssiu;
int ret_scu;
int ret_adg;
int ret_ssi;
ret_ssiu = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SSIU, conf_ssiu);
ret_scu = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SCU, conf_scu);
ret_adg = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_ADG, conf_adg);
ret_ssi = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SSI, conf_ssi);
if (ret_ssiu < 0 ||
ret_scu < 0 ||
ret_adg < 0 ||
ret_ssi < 0)
return ret_ssiu | ret_scu | ret_adg | ret_ssi;
dev_dbg(dev, "Gen2 is probed\n");
return 0;
}
/*
* Gen1
*/
static int rsnd_gen1_probe(struct platform_device *pdev,
struct rsnd_priv *priv)
{
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_regmap_field_conf conf_sru[] = {
RSND_GEN_S_REG(SRC_ROUTE_SEL, 0x00),
RSND_GEN_S_REG(SRC_TMG_SEL0, 0x08),
RSND_GEN_S_REG(SRC_TMG_SEL1, 0x0c),
RSND_GEN_S_REG(SRC_TMG_SEL2, 0x10),
RSND_GEN_S_REG(SRC_ROUTE_CTRL, 0xc0),
RSND_GEN_S_REG(SSI_MODE0, 0xD0),
RSND_GEN_S_REG(SSI_MODE1, 0xD4),
RSND_GEN_M_REG(SRC_BUSIF_MODE, 0x20, 0x4),
RSND_GEN_M_REG(SRC_ROUTE_MODE0, 0x50, 0x8),
RSND_GEN_M_REG(SRC_SWRSR, 0x200, 0x40),
RSND_GEN_M_REG(SRC_SRCIR, 0x204, 0x40),
RSND_GEN_M_REG(SRC_ADINR, 0x214, 0x40),
RSND_GEN_M_REG(SRC_IFSCR, 0x21c, 0x40),
RSND_GEN_M_REG(SRC_IFSVR, 0x220, 0x40),
RSND_GEN_M_REG(SRC_SRCCR, 0x224, 0x40),
RSND_GEN_M_REG(SRC_MNFSR, 0x228, 0x40),
};
struct rsnd_regmap_field_conf conf_adg[] = {
RSND_GEN_S_REG(BRRA, 0x00),
RSND_GEN_S_REG(BRRB, 0x04),
RSND_GEN_S_REG(SSICKR, 0x08),
RSND_GEN_S_REG(AUDIO_CLK_SEL0, 0x0c),
RSND_GEN_S_REG(AUDIO_CLK_SEL1, 0x10),
RSND_GEN_S_REG(AUDIO_CLK_SEL3, 0x18),
RSND_GEN_S_REG(AUDIO_CLK_SEL4, 0x1c),
RSND_GEN_S_REG(AUDIO_CLK_SEL5, 0x20),
};
struct rsnd_regmap_field_conf conf_ssi[] = {
RSND_GEN_M_REG(SSICR, 0x00, 0x40),
RSND_GEN_M_REG(SSISR, 0x04, 0x40),
RSND_GEN_M_REG(SSITDR, 0x08, 0x40),
RSND_GEN_M_REG(SSIRDR, 0x0c, 0x40),
RSND_GEN_M_REG(SSIWSR, 0x20, 0x40),
};
int ret_sru;
int ret_adg;
int ret_ssi;
ret_sru = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_SRU, conf_sru);
ret_adg = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_ADG, conf_adg);
ret_ssi = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_SSI, conf_ssi);
if (ret_sru < 0 ||
ret_adg < 0 ||
ret_ssi < 0)
return ret_sru | ret_adg | ret_ssi;
dev_dbg(dev, "Gen1 is probed\n");
return 0;
}
/*
* Gen
*/
static void rsnd_of_parse_gen(struct platform_device *pdev,
const struct rsnd_of_data *of_data,
struct rsnd_priv *priv)
{
struct rcar_snd_info *info = priv->info;
if (!of_data)
return;
info->flags = of_data->flags;
}
int rsnd_gen_probe(struct platform_device *pdev,
const struct rsnd_of_data *of_data,
struct rsnd_priv *priv)
{
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_gen *gen;
int ret;
rsnd_of_parse_gen(pdev, of_data, priv);
gen = devm_kzalloc(dev, sizeof(*gen), GFP_KERNEL);
if (!gen) {
dev_err(dev, "GEN allocate failed\n");
return -ENOMEM;
}
priv->gen = gen;
ret = -ENODEV;
if (rsnd_is_gen1(priv))
ret = rsnd_gen1_probe(pdev, priv);
else if (rsnd_is_gen2(priv))
ret = rsnd_gen2_probe(pdev, priv);
if (ret < 0)
dev_err(dev, "unknown generation R-Car sound device\n");
return ret;
}
