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original_kernel/sound/soc/sh/rcar/ctu.c

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// SPDX-License-Identifier: GPL-2.0
//
// ctu.c
//
// Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
#include "rsnd.h"
#define CTU_NAME_SIZE 16
#define CTU_NAME "ctu"
/*
* User needs to setup CTU by amixer, and its settings are
* based on below registers
*
* CTUn_CPMDR : amixser set "CTU Pass"
* CTUn_SV0xR : amixser set "CTU SV0"
* CTUn_SV1xR : amixser set "CTU SV1"
* CTUn_SV2xR : amixser set "CTU SV2"
* CTUn_SV3xR : amixser set "CTU SV3"
*
* [CTU Pass]
* 0000: default
* 0001: Connect input data of channel 0
* 0010: Connect input data of channel 1
* 0011: Connect input data of channel 2
* 0100: Connect input data of channel 3
* 0101: Connect input data of channel 4
* 0110: Connect input data of channel 5
* 0111: Connect input data of channel 6
* 1000: Connect input data of channel 7
* 1001: Connect calculated data by scale values of matrix row 0
* 1010: Connect calculated data by scale values of matrix row 1
* 1011: Connect calculated data by scale values of matrix row 2
* 1100: Connect calculated data by scale values of matrix row 3
*
* [CTU SVx]
* [Output0] = [SV00, SV01, SV02, SV03, SV04, SV05, SV06, SV07]
* [Output1] = [SV10, SV11, SV12, SV13, SV14, SV15, SV16, SV17]
* [Output2] = [SV20, SV21, SV22, SV23, SV24, SV25, SV26, SV27]
* [Output3] = [SV30, SV31, SV32, SV33, SV34, SV35, SV36, SV37]
* [Output4] = [ 0, 0, 0, 0, 0, 0, 0, 0 ]
* [Output5] = [ 0, 0, 0, 0, 0, 0, 0, 0 ]
* [Output6] = [ 0, 0, 0, 0, 0, 0, 0, 0 ]
* [Output7] = [ 0, 0, 0, 0, 0, 0, 0, 0 ]
*
* [SVxx]
* Plus Minus
* value time dB value time dB
* -----------------------------------------------------------------------
* H'7F_FFFF 2 6 H'80_0000 2 6
* ...
* H'40_0000 1 0 H'C0_0000 1 0
* ...
* H'00_0001 2.38 x 10^-7 -132
* H'00_0000 0 Mute H'FF_FFFF 2.38 x 10^-7 -132
*
*
* Ex) Input ch -> Output ch
* 1ch -> 0ch
* 0ch -> 1ch
*
* amixer set "CTU Reset" on
* amixer set "CTU Pass" 9,10
* amixer set "CTU SV0" 0,4194304
* amixer set "CTU SV1" 4194304,0
* or
* amixer set "CTU Reset" on
* amixer set "CTU Pass" 2,1
*/
struct rsnd_ctu {
struct rsnd_mod mod;
struct rsnd_kctrl_cfg_m pass;
struct rsnd_kctrl_cfg_m sv[4];
struct rsnd_kctrl_cfg_s reset;
int channels;
u32 flags;
};
#define KCTRL_INITIALIZED (1 << 0)
#define rsnd_ctu_nr(priv) ((priv)->ctu_nr)
#define for_each_rsnd_ctu(pos, priv, i) \
for ((i) = 0; \
((i) < rsnd_ctu_nr(priv)) && \
((pos) = (struct rsnd_ctu *)(priv)->ctu + i); \
i++)
#define rsnd_mod_to_ctu(_mod) \
container_of((_mod), struct rsnd_ctu, mod)
#define rsnd_ctu_get(priv, id) ((struct rsnd_ctu *)(priv->ctu) + id)
static void rsnd_ctu_activation(struct rsnd_mod *mod)
{
rsnd_mod_write(mod, CTU_SWRSR, 0);
rsnd_mod_write(mod, CTU_SWRSR, 1);
}
static void rsnd_ctu_halt(struct rsnd_mod *mod)
{
rsnd_mod_write(mod, CTU_CTUIR, 1);
rsnd_mod_write(mod, CTU_SWRSR, 0);
}
static int rsnd_ctu_probe_(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
return rsnd_cmd_attach(io, rsnd_mod_id(mod));
}
static void rsnd_ctu_value_init(struct rsnd_dai_stream *io,
struct rsnd_mod *mod)
{
struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
u32 cpmdr = 0;
u32 scmdr = 0;
int i, j;
for (i = 0; i < RSND_MAX_CHANNELS; i++) {
u32 val = rsnd_kctrl_valm(ctu->pass, i);
cpmdr |= val << (28 - (i * 4));
if ((val > 0x8) && (scmdr < (val - 0x8)))
scmdr = val - 0x8;
}
rsnd_mod_write(mod, CTU_CTUIR, 1);
rsnd_mod_write(mod, CTU_ADINR, rsnd_runtime_channel_original(io));
rsnd_mod_write(mod, CTU_CPMDR, cpmdr);
rsnd_mod_write(mod, CTU_SCMDR, scmdr);
for (i = 0; i < 4; i++) {
if (i >= scmdr)
break;
for (j = 0; j < RSND_MAX_CHANNELS; j++)
rsnd_mod_write(mod, CTU_SVxxR(i, j), rsnd_kctrl_valm(ctu->sv[i], j));
}
rsnd_mod_write(mod, CTU_CTUIR, 0);
}
static void rsnd_ctu_value_reset(struct rsnd_dai_stream *io,
struct rsnd_mod *mod)
{
struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
int i;
if (!rsnd_kctrl_vals(ctu->reset))
return;
for (i = 0; i < RSND_MAX_CHANNELS; i++) {
rsnd_kctrl_valm(ctu->pass, i) = 0;
rsnd_kctrl_valm(ctu->sv[0], i) = 0;
rsnd_kctrl_valm(ctu->sv[1], i) = 0;
rsnd_kctrl_valm(ctu->sv[2], i) = 0;
rsnd_kctrl_valm(ctu->sv[3], i) = 0;
}
rsnd_kctrl_vals(ctu->reset) = 0;
}
static int rsnd_ctu_init(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
rsnd_mod_power_on(mod);
rsnd_ctu_activation(mod);
rsnd_ctu_value_init(io, mod);
return 0;
}
static int rsnd_ctu_quit(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
rsnd_ctu_halt(mod);
rsnd_mod_power_off(mod);
return 0;
}
static int rsnd_ctu_pcm_new(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct snd_soc_pcm_runtime *rtd)
{
struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
int ret;
if (rsnd_flags_has(ctu, KCTRL_INITIALIZED))
return 0;
/* CTU Pass */
ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU Pass",
rsnd_kctrl_accept_anytime,
NULL,
&ctu->pass, RSND_MAX_CHANNELS,
0xC);
/* ROW0 */
ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV0",
rsnd_kctrl_accept_anytime,
NULL,
&ctu->sv[0], RSND_MAX_CHANNELS,
0x00FFFFFF);
if (ret < 0)
return ret;
/* ROW1 */
ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV1",
rsnd_kctrl_accept_anytime,
NULL,
&ctu->sv[1], RSND_MAX_CHANNELS,
0x00FFFFFF);
if (ret < 0)
return ret;
/* ROW2 */
ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV2",
rsnd_kctrl_accept_anytime,
NULL,
&ctu->sv[2], RSND_MAX_CHANNELS,
0x00FFFFFF);
if (ret < 0)
return ret;
/* ROW3 */
ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV3",
rsnd_kctrl_accept_anytime,
NULL,
&ctu->sv[3], RSND_MAX_CHANNELS,
0x00FFFFFF);
if (ret < 0)
return ret;
/* Reset */
ret = rsnd_kctrl_new_s(mod, io, rtd, "CTU Reset",
rsnd_kctrl_accept_anytime,
rsnd_ctu_value_reset,
&ctu->reset, 1);
rsnd_flags_set(ctu, KCTRL_INITIALIZED);
return ret;
}
static int rsnd_ctu_id(struct rsnd_mod *mod)
{
/*
* ctu00: -> 0, ctu01: -> 0, ctu02: -> 0, ctu03: -> 0
* ctu10: -> 1, ctu11: -> 1, ctu12: -> 1, ctu13: -> 1
*/
return mod->id / 4;
}
static int rsnd_ctu_id_sub(struct rsnd_mod *mod)
{
/*
* ctu00: -> 0, ctu01: -> 1, ctu02: -> 2, ctu03: -> 3
* ctu10: -> 0, ctu11: -> 1, ctu12: -> 2, ctu13: -> 3
*/
return mod->id % 4;
}
static struct rsnd_mod_ops rsnd_ctu_ops = {
.name = CTU_NAME,
.probe = rsnd_ctu_probe_,
.init = rsnd_ctu_init,
.quit = rsnd_ctu_quit,
.pcm_new = rsnd_ctu_pcm_new,
.get_status = rsnd_mod_get_status,
.id = rsnd_ctu_id,
.id_sub = rsnd_ctu_id_sub,
.id_cmd = rsnd_mod_id_raw,
};
struct rsnd_mod *rsnd_ctu_mod_get(struct rsnd_priv *priv, int id)
{
if (WARN_ON(id < 0 || id >= rsnd_ctu_nr(priv)))
id = 0;
return rsnd_mod_get(rsnd_ctu_get(priv, id));
}
int rsnd_ctu_probe(struct rsnd_priv *priv)
{
struct device_node *node;
struct device_node *np;
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_ctu *ctu;
struct clk *clk;
char name[CTU_NAME_SIZE];
int i, nr, ret;
/* This driver doesn't support Gen1 at this point */
if (rsnd_is_gen1(priv))
return 0;
node = rsnd_ctu_of_node(priv);
if (!node)
return 0; /* not used is not error */
nr = of_get_child_count(node);
if (!nr) {
ret = -EINVAL;
goto rsnd_ctu_probe_done;
}
ctu = devm_kcalloc(dev, nr, sizeof(*ctu), GFP_KERNEL);
if (!ctu) {
ret = -ENOMEM;
goto rsnd_ctu_probe_done;
}
priv->ctu_nr = nr;
priv->ctu = ctu;
i = 0;
ret = 0;
for_each_child_of_node(node, np) {
ctu = rsnd_ctu_get(priv, i);
/*
* CTU00, CTU01, CTU02, CTU03 => CTU0
* CTU10, CTU11, CTU12, CTU13 => CTU1
*/
snprintf(name, CTU_NAME_SIZE, "%s.%d",
CTU_NAME, i / 4);
clk = devm_clk_get(dev, name);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
of_node_put(np);
goto rsnd_ctu_probe_done;
}
ret = rsnd_mod_init(priv, rsnd_mod_get(ctu), &rsnd_ctu_ops,
clk, RSND_MOD_CTU, i);
if (ret) {
of_node_put(np);
goto rsnd_ctu_probe_done;
}
i++;
}
rsnd_ctu_probe_done:
of_node_put(node);
return ret;
}
void rsnd_ctu_remove(struct rsnd_priv *priv)
{
struct rsnd_ctu *ctu;
int i;
for_each_rsnd_ctu(ctu, priv, i) {
rsnd_mod_quit(rsnd_mod_get(ctu));
}
}
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