// 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 ' 7 F_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
* 1 ch - > 0 ch
* 0 ch - > 1 ch
*
* 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 > 0 x8) && (scmdr < (val - 0 x8)))
scmdr = val - 0 x8;
}
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)
{
int ret;
ret = rsnd_mod_power_on(mod);
if (ret < 0 )
return ret;
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,
0 xC);
if (ret < 0 )
return ret;
/* ROW0 */
ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV0" ,
rsnd_kctrl_accept_anytime,
NULL,
&ctu->sv[0 ], RSND_MAX_CHANNELS,
0 x00FFFFFF);
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,
0 x00FFFFFF);
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,
0 x00FFFFFF);
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,
0 x00FFFFFF);
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 ;
}
#ifdef CONFIG_DEBUG_FS
static void rsnd_ctu_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,
0 x500 + rsnd_mod_id_raw(mod) * 0 x100, 0 x100);
}
#define DEBUG_INFO .debug_info = rsnd_ctu_debug_info
#else
#define DEBUG_INFO
#endif
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,
DEBUG_INFO
};
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 *dev = rsnd_priv_to_dev(priv);
struct rsnd_ctu *ctu;
struct clk *clk;
char name[CTU_NAME_SIZE];
int i, nr, ret;
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_scoped(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);
goto rsnd_ctu_probe_done;
}
ret = rsnd_mod_init(priv, rsnd_mod_get(ctu), &rsnd_ctu_ops,
clk, RSND_MOD_CTU, i);
if (ret)
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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