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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_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)
#define rsnd_is_gen1(s) ((s)->info->flags & RSND_GEN1)
#define rsnd_is_gen2(s) ((s)->info->flags & RSND_GEN2)
/*
* 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_dai_platform_info *info = rsnd_dai_get_platform_info(rdai);
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
*/
if (rsnd_dai_is_play(rdai, io))
id = info->ssi_id_playback;
else
id = info->ssi_id_capture;
/* 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, SSI_MODE0, 0x0, 0xD0);
RSND_GEN1_REG_MAP(gen, SRU, SSI_MODE1, 0x0, 0xD4);
}
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;
/*
* map address
*/
sru_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SRU);
if (!sru_res) {
dev_err(dev, "Not enough SRU/SSI/ADG platform resources.\n");
return -ENODEV;
}
gen->ops = &rsnd_gen1_ops;
gen->base[RSND_GEN1_SRU] = devm_ioremap_resource(dev, sru_res);
if (!gen->base[RSND_GEN1_SRU]) {
dev_err(dev, "SRU/SSI/ADG ioremap failed\n");
return -ENODEV;
}
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]);
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);
}
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