linux/sound/soc/sh/rcar/dvc.c
Kuninori Morimoto 8aefda5046 ASoC: rsnd: module name is unified
Renesas sound driver uses many modules (= SSI/SRC/DVC),
and each module had own name.
But, each module name can be used as several purpose,
like clock name, DMA name etc...
This patch uses common name for each module.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-26 14:34:55 +01:00

290 lines
6.5 KiB
C

/*
* 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);
clk = devm_clk_get(dev, name);
if (IS_ERR(clk))
return PTR_ERR(clk);
dvc->info = &info->dvc_info[i];
dvc->clk = clk;
rsnd_mod_init(priv, &dvc->mod, &rsnd_dvc_ops, RSND_MOD_DVC, i);
dev_dbg(dev, "CMD%d probed\n", i);
}
return 0;
}