390 lines
8.7 KiB
C
390 lines
8.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// ctu.c
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//
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// Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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#include "rsnd.h"
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#define CTU_NAME_SIZE 16
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#define CTU_NAME "ctu"
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/*
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* User needs to setup CTU by amixer, and its settings are
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* based on below registers
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*
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* CTUn_CPMDR : amixser set "CTU Pass"
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* CTUn_SV0xR : amixser set "CTU SV0"
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* CTUn_SV1xR : amixser set "CTU SV1"
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* CTUn_SV2xR : amixser set "CTU SV2"
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* CTUn_SV3xR : amixser set "CTU SV3"
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*
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* [CTU Pass]
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* 0000: default
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* 0001: Connect input data of channel 0
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* 0010: Connect input data of channel 1
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* 0011: Connect input data of channel 2
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* 0100: Connect input data of channel 3
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* 0101: Connect input data of channel 4
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* 0110: Connect input data of channel 5
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* 0111: Connect input data of channel 6
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* 1000: Connect input data of channel 7
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* 1001: Connect calculated data by scale values of matrix row 0
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* 1010: Connect calculated data by scale values of matrix row 1
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* 1011: Connect calculated data by scale values of matrix row 2
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* 1100: Connect calculated data by scale values of matrix row 3
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*
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* [CTU SVx]
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* [Output0] = [SV00, SV01, SV02, SV03, SV04, SV05, SV06, SV07]
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* [Output1] = [SV10, SV11, SV12, SV13, SV14, SV15, SV16, SV17]
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* [Output2] = [SV20, SV21, SV22, SV23, SV24, SV25, SV26, SV27]
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* [Output3] = [SV30, SV31, SV32, SV33, SV34, SV35, SV36, SV37]
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* [Output4] = [ 0, 0, 0, 0, 0, 0, 0, 0 ]
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* [Output5] = [ 0, 0, 0, 0, 0, 0, 0, 0 ]
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* [Output6] = [ 0, 0, 0, 0, 0, 0, 0, 0 ]
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* [Output7] = [ 0, 0, 0, 0, 0, 0, 0, 0 ]
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*
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* [SVxx]
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* Plus Minus
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* value time dB value time dB
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* -----------------------------------------------------------------------
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* H'7F_FFFF 2 6 H'80_0000 2 6
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* ...
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* H'40_0000 1 0 H'C0_0000 1 0
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* ...
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* H'00_0001 2.38 x 10^-7 -132
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* H'00_0000 0 Mute H'FF_FFFF 2.38 x 10^-7 -132
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*
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*
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* Ex) Input ch -> Output ch
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* 1ch -> 0ch
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* 0ch -> 1ch
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*
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* amixer set "CTU Reset" on
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* amixer set "CTU Pass" 9,10
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* amixer set "CTU SV0" 0,4194304
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* amixer set "CTU SV1" 4194304,0
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* or
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* amixer set "CTU Reset" on
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* amixer set "CTU Pass" 2,1
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*/
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struct rsnd_ctu {
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struct rsnd_mod mod;
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struct rsnd_kctrl_cfg_m pass;
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struct rsnd_kctrl_cfg_m sv[4];
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struct rsnd_kctrl_cfg_s reset;
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int channels;
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u32 flags;
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};
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#define KCTRL_INITIALIZED (1 << 0)
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#define rsnd_ctu_nr(priv) ((priv)->ctu_nr)
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#define for_each_rsnd_ctu(pos, priv, i) \
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for ((i) = 0; \
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((i) < rsnd_ctu_nr(priv)) && \
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((pos) = (struct rsnd_ctu *)(priv)->ctu + i); \
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i++)
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#define rsnd_mod_to_ctu(_mod) \
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container_of((_mod), struct rsnd_ctu, mod)
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#define rsnd_ctu_get(priv, id) ((struct rsnd_ctu *)(priv->ctu) + id)
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static void rsnd_ctu_activation(struct rsnd_mod *mod)
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{
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rsnd_mod_write(mod, CTU_SWRSR, 0);
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rsnd_mod_write(mod, CTU_SWRSR, 1);
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}
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static void rsnd_ctu_halt(struct rsnd_mod *mod)
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{
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rsnd_mod_write(mod, CTU_CTUIR, 1);
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rsnd_mod_write(mod, CTU_SWRSR, 0);
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}
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static int rsnd_ctu_probe_(struct rsnd_mod *mod,
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struct rsnd_dai_stream *io,
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struct rsnd_priv *priv)
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{
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return rsnd_cmd_attach(io, rsnd_mod_id(mod));
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}
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static void rsnd_ctu_value_init(struct rsnd_dai_stream *io,
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struct rsnd_mod *mod)
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{
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struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
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u32 cpmdr = 0;
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u32 scmdr = 0;
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int i, j;
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for (i = 0; i < RSND_MAX_CHANNELS; i++) {
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u32 val = rsnd_kctrl_valm(ctu->pass, i);
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cpmdr |= val << (28 - (i * 4));
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if ((val > 0x8) && (scmdr < (val - 0x8)))
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scmdr = val - 0x8;
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}
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rsnd_mod_write(mod, CTU_CTUIR, 1);
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rsnd_mod_write(mod, CTU_ADINR, rsnd_runtime_channel_original(io));
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rsnd_mod_write(mod, CTU_CPMDR, cpmdr);
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rsnd_mod_write(mod, CTU_SCMDR, scmdr);
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for (i = 0; i < 4; i++) {
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if (i >= scmdr)
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break;
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for (j = 0; j < RSND_MAX_CHANNELS; j++)
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rsnd_mod_write(mod, CTU_SVxxR(i, j), rsnd_kctrl_valm(ctu->sv[i], j));
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}
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rsnd_mod_write(mod, CTU_CTUIR, 0);
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}
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static void rsnd_ctu_value_reset(struct rsnd_dai_stream *io,
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struct rsnd_mod *mod)
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{
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struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
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int i;
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if (!rsnd_kctrl_vals(ctu->reset))
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return;
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for (i = 0; i < RSND_MAX_CHANNELS; i++) {
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rsnd_kctrl_valm(ctu->pass, i) = 0;
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rsnd_kctrl_valm(ctu->sv[0], i) = 0;
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rsnd_kctrl_valm(ctu->sv[1], i) = 0;
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rsnd_kctrl_valm(ctu->sv[2], i) = 0;
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rsnd_kctrl_valm(ctu->sv[3], i) = 0;
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}
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rsnd_kctrl_vals(ctu->reset) = 0;
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}
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static int rsnd_ctu_init(struct rsnd_mod *mod,
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struct rsnd_dai_stream *io,
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struct rsnd_priv *priv)
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{
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rsnd_mod_power_on(mod);
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rsnd_ctu_activation(mod);
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rsnd_ctu_value_init(io, mod);
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return 0;
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}
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static int rsnd_ctu_quit(struct rsnd_mod *mod,
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struct rsnd_dai_stream *io,
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struct rsnd_priv *priv)
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{
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rsnd_ctu_halt(mod);
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rsnd_mod_power_off(mod);
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return 0;
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}
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static int rsnd_ctu_pcm_new(struct rsnd_mod *mod,
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struct rsnd_dai_stream *io,
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struct snd_soc_pcm_runtime *rtd)
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{
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struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
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int ret;
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if (rsnd_flags_has(ctu, KCTRL_INITIALIZED))
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return 0;
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/* CTU Pass */
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ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU Pass",
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rsnd_kctrl_accept_anytime,
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NULL,
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&ctu->pass, RSND_MAX_CHANNELS,
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0xC);
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if (ret < 0)
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return ret;
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/* ROW0 */
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ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV0",
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rsnd_kctrl_accept_anytime,
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NULL,
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&ctu->sv[0], RSND_MAX_CHANNELS,
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0x00FFFFFF);
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if (ret < 0)
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return ret;
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/* ROW1 */
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ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV1",
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rsnd_kctrl_accept_anytime,
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NULL,
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&ctu->sv[1], RSND_MAX_CHANNELS,
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0x00FFFFFF);
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if (ret < 0)
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return ret;
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/* ROW2 */
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ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV2",
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rsnd_kctrl_accept_anytime,
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NULL,
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&ctu->sv[2], RSND_MAX_CHANNELS,
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0x00FFFFFF);
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if (ret < 0)
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return ret;
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/* ROW3 */
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ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV3",
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rsnd_kctrl_accept_anytime,
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NULL,
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&ctu->sv[3], RSND_MAX_CHANNELS,
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0x00FFFFFF);
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if (ret < 0)
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return ret;
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/* Reset */
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ret = rsnd_kctrl_new_s(mod, io, rtd, "CTU Reset",
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rsnd_kctrl_accept_anytime,
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rsnd_ctu_value_reset,
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&ctu->reset, 1);
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rsnd_flags_set(ctu, KCTRL_INITIALIZED);
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return ret;
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}
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static int rsnd_ctu_id(struct rsnd_mod *mod)
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{
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/*
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* ctu00: -> 0, ctu01: -> 0, ctu02: -> 0, ctu03: -> 0
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* ctu10: -> 1, ctu11: -> 1, ctu12: -> 1, ctu13: -> 1
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*/
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return mod->id / 4;
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}
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static int rsnd_ctu_id_sub(struct rsnd_mod *mod)
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{
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/*
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* ctu00: -> 0, ctu01: -> 1, ctu02: -> 2, ctu03: -> 3
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* ctu10: -> 0, ctu11: -> 1, ctu12: -> 2, ctu13: -> 3
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*/
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return mod->id % 4;
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}
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#ifdef CONFIG_DEBUG_FS
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static void rsnd_ctu_debug_info(struct seq_file *m,
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struct rsnd_dai_stream *io,
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struct rsnd_mod *mod)
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{
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rsnd_debugfs_mod_reg_show(m, mod, RSND_GEN2_SCU,
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0x500 + rsnd_mod_id_raw(mod) * 0x100, 0x100);
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}
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#define DEBUG_INFO .debug_info = rsnd_ctu_debug_info
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#else
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#define DEBUG_INFO
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#endif
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static struct rsnd_mod_ops rsnd_ctu_ops = {
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.name = CTU_NAME,
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.probe = rsnd_ctu_probe_,
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.init = rsnd_ctu_init,
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.quit = rsnd_ctu_quit,
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.pcm_new = rsnd_ctu_pcm_new,
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.get_status = rsnd_mod_get_status,
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.id = rsnd_ctu_id,
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.id_sub = rsnd_ctu_id_sub,
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.id_cmd = rsnd_mod_id_raw,
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DEBUG_INFO
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};
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struct rsnd_mod *rsnd_ctu_mod_get(struct rsnd_priv *priv, int id)
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{
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if (WARN_ON(id < 0 || id >= rsnd_ctu_nr(priv)))
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id = 0;
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return rsnd_mod_get(rsnd_ctu_get(priv, id));
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}
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int rsnd_ctu_probe(struct rsnd_priv *priv)
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{
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struct device_node *node;
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struct device_node *np;
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struct device *dev = rsnd_priv_to_dev(priv);
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struct rsnd_ctu *ctu;
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struct clk *clk;
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char name[CTU_NAME_SIZE];
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int i, nr, ret;
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/* This driver doesn't support Gen1 at this point */
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if (rsnd_is_gen1(priv))
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return 0;
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node = rsnd_ctu_of_node(priv);
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if (!node)
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return 0; /* not used is not error */
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nr = of_get_child_count(node);
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if (!nr) {
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ret = -EINVAL;
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goto rsnd_ctu_probe_done;
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}
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ctu = devm_kcalloc(dev, nr, sizeof(*ctu), GFP_KERNEL);
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if (!ctu) {
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ret = -ENOMEM;
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goto rsnd_ctu_probe_done;
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}
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priv->ctu_nr = nr;
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priv->ctu = ctu;
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i = 0;
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ret = 0;
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for_each_child_of_node(node, np) {
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ctu = rsnd_ctu_get(priv, i);
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/*
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* CTU00, CTU01, CTU02, CTU03 => CTU0
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* CTU10, CTU11, CTU12, CTU13 => CTU1
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*/
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snprintf(name, CTU_NAME_SIZE, "%s.%d",
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CTU_NAME, i / 4);
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clk = devm_clk_get(dev, name);
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if (IS_ERR(clk)) {
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ret = PTR_ERR(clk);
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of_node_put(np);
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goto rsnd_ctu_probe_done;
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}
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ret = rsnd_mod_init(priv, rsnd_mod_get(ctu), &rsnd_ctu_ops,
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clk, RSND_MOD_CTU, i);
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if (ret) {
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of_node_put(np);
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goto rsnd_ctu_probe_done;
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}
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i++;
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}
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rsnd_ctu_probe_done:
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of_node_put(node);
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return ret;
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}
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void rsnd_ctu_remove(struct rsnd_priv *priv)
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{
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struct rsnd_ctu *ctu;
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int i;
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for_each_rsnd_ctu(ctu, priv, i) {
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rsnd_mod_quit(rsnd_mod_get(ctu));
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}
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}
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