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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_mod mod;
};
#define rsnd_mix_get(priv, id) ((struct rsnd_mix *)(priv->mix) + id)
#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);
}
static void rsnd_mix_volume_parameter(struct rsnd_dai_stream *io,
struct rsnd_mod *mod)
{
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);
}
static void rsnd_mix_volume_init(struct rsnd_dai_stream *io,
struct rsnd_mod *mod)
{
rsnd_mod_write(mod, MIX_MIXIR, 1);
/* General Information */
rsnd_mod_write(mod, MIX_ADINR, rsnd_get_adinr_chan(mod, io));
/* volume step */
rsnd_mod_write(mod, MIX_MIXMR, 0);
rsnd_mod_write(mod, MIX_MVPDR, 0);
/* common volume parameter */
rsnd_mix_volume_parameter(io, mod);
rsnd_mod_write(mod, MIX_MIXIR, 0);
}
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);
/* common volume parameter */
rsnd_mix_volume_parameter(io, mod);
/* Enable MIX dB setting */
rsnd_mod_write(mod, MIX_MDBER, 1);
}
static int rsnd_mix_probe_(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
return rsnd_cmd_attach(io, rsnd_mod_id(mod));
}
static int rsnd_mix_init(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
rsnd_mod_power_on(mod);
rsnd_mix_soft_reset(mod);
rsnd_mix_volume_init(io, mod);
rsnd_mix_volume_update(io, mod);
return 0;
}
static int rsnd_mix_quit(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
rsnd_mod_power_off(mod);
return 0;
}
static struct rsnd_mod_ops rsnd_mix_ops = {
.name = MIX_NAME,
.probe = rsnd_mix_probe_,
.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 rsnd_mod_get(rsnd_mix_get(priv, id));
}
int rsnd_mix_probe(struct platform_device *pdev,
struct rsnd_priv *priv)
{
struct device_node *node;
struct device_node *np;
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))
return 0;
node = rsnd_mix_of_node(priv);
if (!node)
return 0; /* not used is not error */
nr = of_get_child_count(node);
if (!nr) {
ret = -EINVAL;
goto rsnd_mix_probe_done;
}
mix = devm_kzalloc(dev, sizeof(*mix) * nr, GFP_KERNEL);
if (!mix) {
ret = -ENOMEM;
goto rsnd_mix_probe_done;
}
priv->mix_nr = nr;
priv->mix = mix;
i = 0;
for_each_child_of_node(node, np) {
mix = rsnd_mix_get(priv, i);
snprintf(name, MIX_NAME_SIZE, "%s.%d",
MIX_NAME, i);
clk = devm_clk_get(dev, name);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
goto rsnd_mix_probe_done;
}
ret = rsnd_mod_init(priv, rsnd_mod_get(mix), &rsnd_mix_ops,
clk, RSND_MOD_MIX, i);
if (ret)
goto rsnd_mix_probe_done;
i++;
}
rsnd_mix_probe_done:
of_node_put(node);
return ret;
}
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(rsnd_mod_get(mix));
}
}
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