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/*
* Renesas R-Car CMD support
*
* Copyright (C) 2015 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_cmd {
struct rsnd_mod mod;
};
#define CMD_NAME "cmd"
#define rsnd_cmd_nr(priv) ((priv)->cmd_nr)
#define for_each_rsnd_cmd(pos, priv, i) \
for ((i) = 0; \
((i) < rsnd_cmd_nr(priv)) && \
((pos) = (struct rsnd_cmd *)(priv)->cmd + i); \
i++)
static int rsnd_cmd_init(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io);
struct rsnd_mod *mix = rsnd_io_to_mod_mix(io);
struct device *dev = rsnd_priv_to_dev(priv);
u32 data;
static const u32 path[] = {
[1] = 1 << 0,
[5] = 1 << 8,
[6] = 1 << 12,
[9] = 1 << 15,
};
if (!mix && !dvc)
return 0;
if (ARRAY_SIZE(path) < rsnd_mod_id(mod) + 1)
return -ENXIO;
if (mix) {
struct rsnd_dai *rdai;
struct rsnd_mod *src;
struct rsnd_dai_stream *tio;
int i;
/*
* it is assuming that integrater is well understanding about
* data path. Here doesn't check impossible connection,
* like src2 + src5
*/
data = 0;
for_each_rsnd_dai(rdai, priv, i) {
tio = &rdai->playback;
src = rsnd_io_to_mod_src(tio);
if (mix == rsnd_io_to_mod_mix(tio))
data |= path[rsnd_mod_id(src)];
tio = &rdai->capture;
src = rsnd_io_to_mod_src(tio);
if (mix == rsnd_io_to_mod_mix(tio))
data |= path[rsnd_mod_id(src)];
}
} else {
struct rsnd_mod *src = rsnd_io_to_mod_src(io);
static const u8 cmd_case[] = {
[0] = 0x3,
[1] = 0x3,
[2] = 0x4,
[3] = 0x1,
[4] = 0x2,
[5] = 0x4,
[6] = 0x1,
[9] = 0x2,
};
if (unlikely(!src))
return -EIO;
data = path[rsnd_mod_id(src)] |
cmd_case[rsnd_mod_id(src)] << 16;
}
dev_dbg(dev, "ctu/mix path = 0x%08x", data);
rsnd_mod_write(mod, CMD_ROUTE_SLCT, data);
rsnd_mod_write(mod, CMD_BUSIF_MODE, rsnd_get_busif_shift(io, mod) | 1);
rsnd_mod_write(mod, CMD_BUSIF_DALIGN, rsnd_get_dalign(mod, io));
rsnd_adg_set_cmd_timsel_gen2(mod, io);
return 0;
}
static int rsnd_cmd_start(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
rsnd_mod_write(mod, CMD_CTRL, 0x10);
return 0;
}
static int rsnd_cmd_stop(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
rsnd_mod_write(mod, CMD_CTRL, 0);
return 0;
}
static struct rsnd_mod_ops rsnd_cmd_ops = {
.name = CMD_NAME,
.init = rsnd_cmd_init,
.start = rsnd_cmd_start,
.stop = rsnd_cmd_stop,
};
static struct rsnd_mod *rsnd_cmd_mod_get(struct rsnd_priv *priv, int id)
{
if (WARN_ON(id < 0 || id >= rsnd_cmd_nr(priv)))
id = 0;
return rsnd_mod_get((struct rsnd_cmd *)(priv->cmd) + id);
}
int rsnd_cmd_attach(struct rsnd_dai_stream *io, int id)
{
struct rsnd_priv *priv = rsnd_io_to_priv(io);
struct rsnd_mod *mod = rsnd_cmd_mod_get(priv, id);
return rsnd_dai_connect(mod, io, mod->type);
}
int rsnd_cmd_probe(struct rsnd_priv *priv)
{
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_cmd *cmd;
int i, nr, ret;
/* This driver doesn't support Gen1 at this point */
if (rsnd_is_gen1(priv))
return 0;
/* same number as DVC */
nr = priv->dvc_nr;
if (!nr)
return 0;
cmd = devm_kzalloc(dev, sizeof(*cmd) * nr, GFP_KERNEL);
if (!cmd)
return -ENOMEM;
priv->cmd_nr = nr;
priv->cmd = cmd;
for_each_rsnd_cmd(cmd, priv, i) {
ret = rsnd_mod_init(priv, rsnd_mod_get(cmd),
&rsnd_cmd_ops, NULL,
rsnd_mod_get_status, RSND_MOD_CMD, i);
if (ret)
return ret;
}
return 0;
}
void rsnd_cmd_remove(struct rsnd_priv *priv)
{
struct rsnd_cmd *cmd;
int i;
for_each_rsnd_cmd(cmd, priv, i) {
rsnd_mod_quit(rsnd_mod_get(cmd));
}
}
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