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/*
* mix.c
*
* Copyright (c) 2015 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"
#define MIX_NAME_SIZE 16
#define MIX_NAME "mix"
struct rsnd_mix {
struct rsnd_mix_platform_info *info; /* rcar_snd.h */
struct rsnd_mod mod;
};
#define rsnd_mix_nr(priv) ((priv)->mix_nr)
#define for_each_rsnd_mix(pos, priv, i) \
for ((i) = 0; \
((i) < rsnd_mix_nr(priv)) && \
((pos) = (struct rsnd_mix *)(priv)->mix + i); \
i++)
static void rsnd_mix_soft_reset(struct rsnd_mod *mod)
{
rsnd_mod_write(mod, MIX_SWRSR, 0);
rsnd_mod_write(mod, MIX_SWRSR, 1);
}
#define rsnd_mix_initialize_lock(mod) __rsnd_mix_initialize_lock(mod, 1)
#define rsnd_mix_initialize_unlock(mod) __rsnd_mix_initialize_lock(mod, 0)
static void __rsnd_mix_initialize_lock(struct rsnd_mod *mod, u32 enable)
{
rsnd_mod_write(mod, MIX_MIXIR, enable);
}
static void rsnd_mix_volume_update(struct rsnd_dai_stream *io,
struct rsnd_mod *mod)
{
/* Disable MIX dB setting */
rsnd_mod_write(mod, MIX_MDBER, 0);
rsnd_mod_write(mod, MIX_MDBAR, 0);
rsnd_mod_write(mod, MIX_MDBBR, 0);
rsnd_mod_write(mod, MIX_MDBCR, 0);
rsnd_mod_write(mod, MIX_MDBDR, 0);
/* Enable MIX dB setting */
rsnd_mod_write(mod, MIX_MDBER, 1);
}
static int rsnd_mix_init(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
rsnd_mod_hw_start(mod);
rsnd_mix_soft_reset(mod);
rsnd_mix_initialize_lock(mod);
rsnd_mod_write(mod, MIX_ADINR, rsnd_get_adinr_chan(mod, io));
rsnd_path_parse(priv, io);
/* volume step */
rsnd_mod_write(mod, MIX_MIXMR, 0);
rsnd_mod_write(mod, MIX_MVPDR, 0);
rsnd_mix_volume_update(io, mod);
rsnd_mix_initialize_unlock(mod);
return 0;
}
static int rsnd_mix_quit(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
rsnd_mod_hw_stop(mod);
return 0;
}
static struct rsnd_mod_ops rsnd_mix_ops = {
.name = MIX_NAME,
.init = rsnd_mix_init,
.quit = rsnd_mix_quit,
};
struct rsnd_mod *rsnd_mix_mod_get(struct rsnd_priv *priv, int id)
{
if (WARN_ON(id < 0 || id >= rsnd_mix_nr(priv)))
id = 0;
return &((struct rsnd_mix *)(priv->mix) + id)->mod;
}
static void rsnd_of_parse_mix(struct platform_device *pdev,
const struct rsnd_of_data *of_data,
struct rsnd_priv *priv)
{
struct device_node *node;
struct rsnd_mix_platform_info *mix_info;
struct rcar_snd_info *info = rsnd_priv_to_info(priv);
struct device *dev = &pdev->dev;
int nr;
if (!of_data)
return;
node = of_get_child_by_name(dev->of_node, "rcar_sound,mix");
if (!node)
return;
nr = of_get_child_count(node);
if (!nr)
goto rsnd_of_parse_mix_end;
mix_info = devm_kzalloc(dev,
sizeof(struct rsnd_mix_platform_info) * nr,
GFP_KERNEL);
if (!mix_info) {
dev_err(dev, "mix info allocation error\n");
goto rsnd_of_parse_mix_end;
}
info->mix_info = mix_info;
info->mix_info_nr = nr;
rsnd_of_parse_mix_end:
of_node_put(node);
}
int rsnd_mix_probe(struct platform_device *pdev,
const struct rsnd_of_data *of_data,
struct rsnd_priv *priv)
{
struct rcar_snd_info *info = rsnd_priv_to_info(priv);
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_mix *mix;
struct clk *clk;
char name[MIX_NAME_SIZE];
int i, nr, ret;
/* This driver doesn't support Gen1 at this point */
if (rsnd_is_gen1(priv)) {
dev_warn(dev, "MIX is not supported on Gen1\n");
return -EINVAL;
}
rsnd_of_parse_mix(pdev, of_data, priv);
nr = info->mix_info_nr;
if (!nr)
return 0;
mix = devm_kzalloc(dev, sizeof(*mix) * nr, GFP_KERNEL);
if (!mix)
return -ENOMEM;
priv->mix_nr = nr;
priv->mix = mix;
for_each_rsnd_mix(mix, priv, i) {
snprintf(name, MIX_NAME_SIZE, "%s.%d",
MIX_NAME, i);
clk = devm_clk_get(dev, name);
if (IS_ERR(clk))
return PTR_ERR(clk);
mix->info = &info->mix_info[i];
ret = rsnd_mod_init(priv, &mix->mod, &rsnd_mix_ops,
clk, RSND_MOD_MIX, i);
if (ret)
return ret;
}
return 0;
}
void rsnd_mix_remove(struct platform_device *pdev,
struct rsnd_priv *priv)
{
struct rsnd_mix *mix;
int i;
for_each_rsnd_mix(mix, priv, i) {
rsnd_mod_quit(&mix->mod);
}
}
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