// SPDX-License-Identifier: GPL-2.0
//
// mix.c
//
// Copyright (c) 2015 Kuninori Morimoto <[email protected]>
/*
* CTUn MIXn
* +------+ +------+
* [SRC3 / SRC6] -> |CTU n0| -> [MIX n0| ->
* [SRC4 / SRC9] -> |CTU n1| -> [MIX n1| ->
* [SRC0 / SRC1] -> |CTU n2| -> [MIX n2| ->
* [SRC2 / SRC5] -> |CTU n3| -> [MIX n3| ->
* +------+ +------+
*
* ex)
* DAI0 : playback = <&src0 &ctu02 &mix0 &dvc0 &ssi0>;
* DAI1 : playback = <&src2 &ctu03 &mix0 &dvc0 &ssi0>;
*
* MIX Volume
* amixer set "MIX",0 100% // DAI0 Volume
* amixer set "MIX",1 100% // DAI1 Volume
*
* Volume Ramp
* amixer set "MIX Ramp Up Rate" "0.125 dB/1 step"
* amixer set "MIX Ramp Down Rate" "4 dB/1 step"
* amixer set "MIX Ramp" on
* aplay xxx.wav &
* amixer set "MIX",0 80% // DAI0 Volume Down
* amixer set "MIX",1 100% // DAI1 Volume Up
*/
#include "rsnd.h"
#define MIX_NAME_SIZE 16
#define MIX_NAME "mix"
struct rsnd_mix {
struct rsnd_mod mod;
struct rsnd_kctrl_cfg_s volumeA; /* MDBAR */
struct rsnd_kctrl_cfg_s volumeB; /* MDBBR */
struct rsnd_kctrl_cfg_s volumeC; /* MDBCR */
struct rsnd_kctrl_cfg_s volumeD; /* MDBDR */
struct rsnd_kctrl_cfg_s ren; /* Ramp Enable */
struct rsnd_kctrl_cfg_s rup; /* Ramp Rate Up */
struct rsnd_kctrl_cfg_s rdw; /* Ramp Rate Down */
u32 flags;
};
#define ONCE_KCTRL_INITIALIZED (1 << 0)
#define HAS_VOLA (1 << 1)
#define HAS_VOLB (1 << 2)
#define HAS_VOLC (1 << 3)
#define HAS_VOLD (1 << 4)
#define VOL_MAX 0x3ff
#define rsnd_mod_to_mix(_mod) \
container_of((_mod), struct rsnd_mix, 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_activation(struct rsnd_mod *mod)
{
rsnd_mod_write(mod, MIX_SWRSR, 0);
rsnd_mod_write(mod, MIX_SWRSR, 1);
}
static void rsnd_mix_halt(struct rsnd_mod *mod)
{
rsnd_mod_write(mod, MIX_MIXIR, 1);
rsnd_mod_write(mod, MIX_SWRSR, 0);
}
#define rsnd_mix_get_vol(mix, X) \
rsnd_flags_has(mix, HAS_VOL##X) ? \
(VOL_MAX - rsnd_kctrl_vals(mix->volume##X)) : 0
static void rsnd_mix_volume_parameter(struct rsnd_dai_stream *io,
struct rsnd_mod *mod)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_mix *mix = rsnd_mod_to_mix(mod);
u32 volA = rsnd_mix_get_vol(mix, A);
u32 volB = rsnd_mix_get_vol(mix, B);
u32 volC = rsnd_mix_get_vol(mix, C);
u32 volD = rsnd_mix_get_vol(mix, D);
dev_dbg(dev, "MIX A/B/C/D = %02x/%02x/%02x/%02x\n",
volA, volB, volC, volD);
rsnd_mod_write(mod, MIX_MDBAR, volA);
rsnd_mod_write(mod, MIX_MDBBR, volB);
rsnd_mod_write(mod, MIX_MDBCR, volC);
rsnd_mod_write(mod, MIX_MDBDR, volD);
}
static void rsnd_mix_volume_init(struct rsnd_dai_stream *io,
struct rsnd_mod *mod)
{
struct rsnd_mix *mix = rsnd_mod_to_mix(mod);
rsnd_mod_write(mod, MIX_MIXIR, 1);
/* General Information */
rsnd_mod_write(mod, MIX_ADINR, rsnd_runtime_channel_after_ctu(io));
/* volume step */
rsnd_mod_write(mod, MIX_MIXMR, rsnd_kctrl_vals(mix->ren));
rsnd_mod_write(mod, MIX_MVPDR, rsnd_kctrl_vals(mix->rup) << 8 |
rsnd_kctrl_vals(mix->rdw));
/* 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)
{
int ret;
ret = rsnd_mod_power_on(mod);
if (ret < 0)
return ret;
rsnd_mix_activation(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_mix_halt(mod);
rsnd_mod_power_off(mod);
return 0;
}
static int rsnd_mix_pcm_new(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct snd_soc_pcm_runtime *rtd)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_mix *mix = rsnd_mod_to_mix(mod);
struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
struct rsnd_kctrl_cfg_s *volume;
int ret;
switch (rsnd_mod_id(src_mod)) {
case 3:
case 6: /* MDBAR */
volume = &mix->volumeA;
rsnd_flags_set(mix, HAS_VOLA);
break;
case 4:
case 9: /* MDBBR */
volume = &mix->volumeB;
rsnd_flags_set(mix, HAS_VOLB);
break;
case 0:
case 1: /* MDBCR */
volume = &mix->volumeC;
rsnd_flags_set(mix, HAS_VOLC);
break;
case 2:
case 5: /* MDBDR */
volume = &mix->volumeD;
rsnd_flags_set(mix, HAS_VOLD);
break;
default:
dev_err(dev, "unknown SRC is connected\n");
return -EINVAL;
}
/* Volume */
ret = rsnd_kctrl_new_s(mod, io, rtd,
"MIX Playback Volume",
rsnd_kctrl_accept_anytime,
rsnd_mix_volume_update,
volume, VOL_MAX);
if (ret < 0)
return ret;
rsnd_kctrl_vals(*volume) = VOL_MAX;
if (rsnd_flags_has(mix, ONCE_KCTRL_INITIALIZED))
return ret;
/* Ramp */
ret = rsnd_kctrl_new_s(mod, io, rtd,
"MIX Ramp Switch",
rsnd_kctrl_accept_anytime,
rsnd_mix_volume_update,
&mix->ren, 1);
if (ret < 0)
return ret;
ret = rsnd_kctrl_new_e(mod, io, rtd,
"MIX Ramp Up Rate",
rsnd_kctrl_accept_anytime,
rsnd_mix_volume_update,
&mix->rup,
volume_ramp_rate,
VOLUME_RAMP_MAX_MIX);
if (ret < 0)
return ret;
ret = rsnd_kctrl_new_e(mod, io, rtd,
"MIX Ramp Down Rate",
rsnd_kctrl_accept_anytime,
rsnd_mix_volume_update,
&mix->rdw,
volume_ramp_rate,
VOLUME_RAMP_MAX_MIX);
rsnd_flags_set(mix, ONCE_KCTRL_INITIALIZED);
return ret;
}
#ifdef CONFIG_DEBUG_FS
static void rsnd_mix_debug_info(struct seq_file *m,
struct rsnd_dai_stream *io,
struct rsnd_mod *mod)
{
rsnd_debugfs_mod_reg_show(m, mod, RSND_BASE_SCU,
0xd00 + rsnd_mod_id(mod) * 0x40, 0x30);
}
#define DEBUG_INFO .debug_info = rsnd_mix_debug_info
#else
#define DEBUG_INFO
#endif
static struct rsnd_mod_ops rsnd_mix_ops = {
.name = MIX_NAME,
.probe = rsnd_mix_probe_,
.init = rsnd_mix_init,
.quit = rsnd_mix_quit,
.pcm_new = rsnd_mix_pcm_new,
.get_status = rsnd_mod_get_status,
DEBUG_INFO
};
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 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;
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_kcalloc(dev, nr, sizeof(*mix), GFP_KERNEL);
if (!mix) {
ret = -ENOMEM;
goto rsnd_mix_probe_done;
}
priv->mix_nr = nr;
priv->mix = mix;
i = 0;
ret = 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);
of_node_put(np);
goto rsnd_mix_probe_done;
}
ret = rsnd_mod_init(priv, rsnd_mod_get(mix), &rsnd_mix_ops,
clk, RSND_MOD_MIX, i);
if (ret) {
of_node_put(np);
goto rsnd_mix_probe_done;
}
i++;
}
rsnd_mix_probe_done:
of_node_put(node);
return ret;
}
void rsnd_mix_remove(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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