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/*
* Renesas R-Car DVC support
*
* Copyright (C) 2014 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"
#define RSND_DVC_NAME_SIZE 16
#define RSND_DVC_VOLUME_MAX 100
#define RSND_DVC_VOLUME_NUM 2
#define DVC_NAME "dvc"
struct rsnd_dvc {
struct rsnd_dvc_platform_info *info; /* rcar_snd.h */
struct rsnd_mod mod;
struct clk *clk;
long volume[RSND_DVC_VOLUME_NUM];
};
#define rsnd_mod_to_dvc(_mod) \
container_of((_mod), struct rsnd_dvc, mod)
#define for_each_rsnd_dvc(pos, priv, i) \
for ((i) = 0; \
((i) < rsnd_dvc_nr(priv)) && \
((pos) = (struct rsnd_dvc *)(priv)->dvc + i); \
i++)
static void rsnd_dvc_volume_update(struct rsnd_mod *mod)
{
struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
u32 max = (0x00800000 - 1);
u32 vol[RSND_DVC_VOLUME_NUM];
int i;
for (i = 0; i < RSND_DVC_VOLUME_NUM; i++)
vol[i] = max / RSND_DVC_VOLUME_MAX * dvc->volume[i];
rsnd_mod_write(mod, DVC_VOL0R, vol[0]);
rsnd_mod_write(mod, DVC_VOL1R, vol[1]);
}
static int rsnd_dvc_probe_gen2(struct rsnd_mod *mod,
struct rsnd_dai *rdai)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
struct device *dev = rsnd_priv_to_dev(priv);
dev_dbg(dev, "%s (Gen2) is probed\n", rsnd_mod_name(mod));
return 0;
}
static int rsnd_dvc_init(struct rsnd_mod *dvc_mod,
struct rsnd_dai *rdai)
{
struct rsnd_dvc *dvc = rsnd_mod_to_dvc(dvc_mod);
struct rsnd_dai_stream *io = rsnd_mod_to_io(dvc_mod);
struct rsnd_priv *priv = rsnd_mod_to_priv(dvc_mod);
struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
struct device *dev = rsnd_priv_to_dev(priv);
int dvc_id = rsnd_mod_id(dvc_mod);
int src_id = rsnd_mod_id(src_mod);
u32 route[] = {
[0] = 0x30000,
[1] = 0x30001,
[2] = 0x40000,
[3] = 0x10000,
[4] = 0x20000,
[5] = 0x40100
};
if (src_id >= ARRAY_SIZE(route)) {
dev_err(dev, "DVC%d isn't connected to SRC%d\n", dvc_id, src_id);
return -EINVAL;
}
clk_prepare_enable(dvc->clk);
/*
* fixme
* it doesn't support CTU/MIX
*/
rsnd_mod_write(dvc_mod, CMD_ROUTE_SLCT, route[src_id]);
rsnd_mod_write(dvc_mod, DVC_SWRSR, 0);
rsnd_mod_write(dvc_mod, DVC_SWRSR, 1);
rsnd_mod_write(dvc_mod, DVC_DVUIR, 1);
rsnd_mod_write(dvc_mod, DVC_ADINR, rsnd_get_adinr(dvc_mod));
/* enable Volume */
rsnd_mod_write(dvc_mod, DVC_DVUCR, 0x100);
/* ch0/ch1 Volume */
rsnd_dvc_volume_update(dvc_mod);
rsnd_mod_write(dvc_mod, DVC_DVUIR, 0);
rsnd_mod_write(dvc_mod, DVC_DVUER, 1);
rsnd_adg_set_cmd_timsel_gen2(rdai, dvc_mod, io);
return 0;
}
static int rsnd_dvc_quit(struct rsnd_mod *mod,
struct rsnd_dai *rdai)
{
struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
clk_disable_unprepare(dvc->clk);
return 0;
}
static int rsnd_dvc_start(struct rsnd_mod *mod,
struct rsnd_dai *rdai)
{
rsnd_mod_write(mod, CMD_CTRL, 0x10);
return 0;
}
static int rsnd_dvc_stop(struct rsnd_mod *mod,
struct rsnd_dai *rdai)
{
rsnd_mod_write(mod, CMD_CTRL, 0);
return 0;
}
static int rsnd_dvc_volume_info(struct snd_kcontrol *kctrl,
struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = RSND_DVC_VOLUME_NUM;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = RSND_DVC_VOLUME_MAX;
return 0;
}
static int rsnd_dvc_volume_get(struct snd_kcontrol *kctrl,
struct snd_ctl_elem_value *ucontrol)
{
struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
int i;
for (i = 0; i < RSND_DVC_VOLUME_NUM; i++)
ucontrol->value.integer.value[i] = dvc->volume[i];
return 0;
}
static int rsnd_dvc_volume_put(struct snd_kcontrol *kctrl,
struct snd_ctl_elem_value *ucontrol)
{
struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
int i, change = 0;
for (i = 0; i < RSND_DVC_VOLUME_NUM; i++) {
if (ucontrol->value.integer.value[i] < 0 ||
ucontrol->value.integer.value[i] > RSND_DVC_VOLUME_MAX)
return -EINVAL;
change |= (ucontrol->value.integer.value[i] != dvc->volume[i]);
}
if (change) {
for (i = 0; i < RSND_DVC_VOLUME_NUM; i++)
dvc->volume[i] = ucontrol->value.integer.value[i];
rsnd_dvc_volume_update(mod);
}
return change;
}
static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
struct rsnd_dai *rdai,
struct snd_soc_pcm_runtime *rtd)
{
struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
struct device *dev = rsnd_priv_to_dev(priv);
struct snd_card *card = rtd->card->snd_card;
struct snd_kcontrol *kctrl;
static struct snd_kcontrol_new knew = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Playback Volume",
.info = rsnd_dvc_volume_info,
.get = rsnd_dvc_volume_get,
.put = rsnd_dvc_volume_put,
};
int ret;
if (!rsnd_dai_is_play(rdai, io)) {
dev_err(dev, "DVC%d is connected to Capture DAI\n",
rsnd_mod_id(mod));
return -EINVAL;
}
kctrl = snd_ctl_new1(&knew, mod);
if (!kctrl)
return -ENOMEM;
ret = snd_ctl_add(card, kctrl);
if (ret < 0)
return ret;
return 0;
}
static struct rsnd_mod_ops rsnd_dvc_ops = {
.name = DVC_NAME,
.probe = rsnd_dvc_probe_gen2,
.init = rsnd_dvc_init,
.quit = rsnd_dvc_quit,
.start = rsnd_dvc_start,
.stop = rsnd_dvc_stop,
.pcm_new = rsnd_dvc_pcm_new,
};
struct rsnd_mod *rsnd_dvc_mod_get(struct rsnd_priv *priv, int id)
{
if (WARN_ON(id < 0 || id >= rsnd_dvc_nr(priv)))
id = 0;
return &((struct rsnd_dvc *)(priv->dvc) + id)->mod;
}
int rsnd_dvc_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_dvc *dvc;
struct clk *clk;
char name[RSND_DVC_NAME_SIZE];
int i, nr;
nr = info->dvc_info_nr;
if (!nr)
return 0;
/* This driver doesn't support Gen1 at this point */
if (rsnd_is_gen1(priv)) {
dev_warn(dev, "CMD is not supported on Gen1\n");
return -EINVAL;
}
dvc = devm_kzalloc(dev, sizeof(*dvc) * nr, GFP_KERNEL);
if (!dvc) {
dev_err(dev, "CMD allocate failed\n");
return -ENOMEM;
}
priv->dvc_nr = nr;
priv->dvc = dvc;
for_each_rsnd_dvc(dvc, priv, i) {
snprintf(name, RSND_DVC_NAME_SIZE, "%s.%d",
DVC_NAME, i
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