346 lines
7.9 KiB
C
346 lines
7.9 KiB
C
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/*
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* mix.c
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*
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* Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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/*
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* CTUn MIXn
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* +------+ +------+
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* [SRC3 / SRC6] -> |CTU n0| -> [MIX n0| ->
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* [SRC4 / SRC9] -> |CTU n1| -> [MIX n1| ->
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* [SRC0 / SRC1] -> |CTU n2| -> [MIX n2| ->
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* [SRC2 / SRC5] -> |CTU n3| -> [MIX n3| ->
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* +------+ +------+
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*
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* ex)
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* DAI0 : playback = <&src0 &ctu02 &mix0 &dvc0 &ssi0>;
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* DAI1 : playback = <&src2 &ctu03 &mix0 &dvc0 &ssi0>;
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*
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* MIX Volume
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* amixer set "MIX",0 100% // DAI0 Volume
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* amixer set "MIX",1 100% // DAI1 Volume
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*
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* Volume Ramp
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* amixer set "MIX Ramp Up Rate" "0.125 dB/1 step"
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* amixer set "MIX Ramp Down Rate" "4 dB/1 step"
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* amixer set "MIX Ramp" on
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* aplay xxx.wav &
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* amixer set "MIX",0 80% // DAI0 Volume Down
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* amixer set "MIX",1 100% // DAI1 Volume Up
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*/
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#include "rsnd.h"
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#define MIX_NAME_SIZE 16
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#define MIX_NAME "mix"
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struct rsnd_mix {
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struct rsnd_mod mod;
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struct rsnd_kctrl_cfg_s volumeA; /* MDBAR */
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struct rsnd_kctrl_cfg_s volumeB; /* MDBBR */
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struct rsnd_kctrl_cfg_s volumeC; /* MDBCR */
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struct rsnd_kctrl_cfg_s volumeD; /* MDBDR */
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struct rsnd_kctrl_cfg_s ren; /* Ramp Enable */
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struct rsnd_kctrl_cfg_s rup; /* Ramp Rate Up */
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struct rsnd_kctrl_cfg_s rdw; /* Ramp Rate Down */
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u32 flags;
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};
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#define ONCE_KCTRL_INITIALIZED (1 << 0)
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#define HAS_VOLA (1 << 1)
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#define HAS_VOLB (1 << 2)
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#define HAS_VOLC (1 << 3)
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#define HAS_VOLD (1 << 4)
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#define VOL_MAX 0x3ff
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#define rsnd_mod_to_mix(_mod) \
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container_of((_mod), struct rsnd_mix, mod)
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#define rsnd_mix_get(priv, id) ((struct rsnd_mix *)(priv->mix) + id)
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#define rsnd_mix_nr(priv) ((priv)->mix_nr)
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#define for_each_rsnd_mix(pos, priv, i) \
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for ((i) = 0; \
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((i) < rsnd_mix_nr(priv)) && \
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((pos) = (struct rsnd_mix *)(priv)->mix + i); \
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i++)
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static void rsnd_mix_activation(struct rsnd_mod *mod)
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{
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rsnd_mod_write(mod, MIX_SWRSR, 0);
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rsnd_mod_write(mod, MIX_SWRSR, 1);
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}
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static void rsnd_mix_halt(struct rsnd_mod *mod)
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{
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rsnd_mod_write(mod, MIX_MIXIR, 1);
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rsnd_mod_write(mod, MIX_SWRSR, 0);
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}
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#define rsnd_mix_get_vol(mix, X) \
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rsnd_flags_has(mix, HAS_VOL##X) ? \
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(VOL_MAX - rsnd_kctrl_vals(mix->volume##X)) : 0
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static void rsnd_mix_volume_parameter(struct rsnd_dai_stream *io,
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struct rsnd_mod *mod)
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{
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struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
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struct device *dev = rsnd_priv_to_dev(priv);
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struct rsnd_mix *mix = rsnd_mod_to_mix(mod);
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u32 volA = rsnd_mix_get_vol(mix, A);
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u32 volB = rsnd_mix_get_vol(mix, B);
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u32 volC = rsnd_mix_get_vol(mix, C);
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u32 volD = rsnd_mix_get_vol(mix, D);
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dev_dbg(dev, "MIX A/B/C/D = %02x/%02x/%02x/%02x\n",
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volA, volB, volC, volD);
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rsnd_mod_write(mod, MIX_MDBAR, volA);
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rsnd_mod_write(mod, MIX_MDBBR, volB);
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rsnd_mod_write(mod, MIX_MDBCR, volC);
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rsnd_mod_write(mod, MIX_MDBDR, volD);
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}
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static void rsnd_mix_volume_init(struct rsnd_dai_stream *io,
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struct rsnd_mod *mod)
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{
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struct rsnd_mix *mix = rsnd_mod_to_mix(mod);
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rsnd_mod_write(mod, MIX_MIXIR, 1);
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/* General Information */
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rsnd_mod_write(mod, MIX_ADINR, rsnd_runtime_channel_after_ctu(io));
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/* volume step */
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rsnd_mod_write(mod, MIX_MIXMR, rsnd_kctrl_vals(mix->ren));
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rsnd_mod_write(mod, MIX_MVPDR, rsnd_kctrl_vals(mix->rup) << 8 |
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rsnd_kctrl_vals(mix->rdw));
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/* common volume parameter */
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rsnd_mix_volume_parameter(io, mod);
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rsnd_mod_write(mod, MIX_MIXIR, 0);
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}
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static void rsnd_mix_volume_update(struct rsnd_dai_stream *io,
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struct rsnd_mod *mod)
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{
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/* Disable MIX dB setting */
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rsnd_mod_write(mod, MIX_MDBER, 0);
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/* common volume parameter */
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rsnd_mix_volume_parameter(io, mod);
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/* Enable MIX dB setting */
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rsnd_mod_write(mod, MIX_MDBER, 1);
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}
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static int rsnd_mix_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 int rsnd_mix_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_mix_activation(mod);
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rsnd_mix_volume_init(io, mod);
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rsnd_mix_volume_update(io, mod);
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return 0;
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}
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static int rsnd_mix_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_mix_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_mix_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_priv *priv = rsnd_mod_to_priv(mod);
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struct device *dev = rsnd_priv_to_dev(priv);
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struct rsnd_mix *mix = rsnd_mod_to_mix(mod);
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struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
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struct rsnd_kctrl_cfg_s *volume;
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int ret;
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switch (rsnd_mod_id(src_mod)) {
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case 3:
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case 6: /* MDBAR */
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volume = &mix->volumeA;
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rsnd_flags_set(mix, HAS_VOLA);
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break;
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case 4:
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case 9: /* MDBBR */
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volume = &mix->volumeB;
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rsnd_flags_set(mix, HAS_VOLB);
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break;
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case 0:
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case 1: /* MDBCR */
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volume = &mix->volumeC;
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rsnd_flags_set(mix, HAS_VOLC);
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break;
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case 2:
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case 5: /* MDBDR */
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volume = &mix->volumeD;
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rsnd_flags_set(mix, HAS_VOLD);
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break;
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default:
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dev_err(dev, "unknown SRC is connected\n");
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return -EINVAL;
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}
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/* Volume */
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ret = rsnd_kctrl_new_s(mod, io, rtd,
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"MIX Playback Volume",
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rsnd_kctrl_accept_anytime,
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rsnd_mix_volume_update,
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volume, VOL_MAX);
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if (ret < 0)
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return ret;
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rsnd_kctrl_vals(*volume) = VOL_MAX;
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if (rsnd_flags_has(mix, ONCE_KCTRL_INITIALIZED))
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return ret;
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/* Ramp */
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ret = rsnd_kctrl_new_s(mod, io, rtd,
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"MIX Ramp Switch",
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rsnd_kctrl_accept_anytime,
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rsnd_mix_volume_update,
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&mix->ren, 1);
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if (ret < 0)
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return ret;
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ret = rsnd_kctrl_new_e(mod, io, rtd,
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"MIX Ramp Up Rate",
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rsnd_kctrl_accept_anytime,
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rsnd_mix_volume_update,
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&mix->rup,
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volume_ramp_rate,
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VOLUME_RAMP_MAX_MIX);
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if (ret < 0)
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return ret;
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ret = rsnd_kctrl_new_e(mod, io, rtd,
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"MIX Ramp Down Rate",
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rsnd_kctrl_accept_anytime,
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rsnd_mix_volume_update,
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&mix->rdw,
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volume_ramp_rate,
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VOLUME_RAMP_MAX_MIX);
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rsnd_flags_set(mix, ONCE_KCTRL_INITIALIZED);
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return ret;
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}
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static struct rsnd_mod_ops rsnd_mix_ops = {
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.name = MIX_NAME,
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.probe = rsnd_mix_probe_,
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.init = rsnd_mix_init,
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.quit = rsnd_mix_quit,
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.pcm_new = rsnd_mix_pcm_new,
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};
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struct rsnd_mod *rsnd_mix_mod_get(struct rsnd_priv *priv, int id)
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{
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if (WARN_ON(id < 0 || id >= rsnd_mix_nr(priv)))
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id = 0;
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return rsnd_mod_get(rsnd_mix_get(priv, id));
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}
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int rsnd_mix_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_mix *mix;
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struct clk *clk;
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char name[MIX_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_mix_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_mix_probe_done;
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}
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mix = devm_kzalloc(dev, sizeof(*mix) * nr, GFP_KERNEL);
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if (!mix) {
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ret = -ENOMEM;
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goto rsnd_mix_probe_done;
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}
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priv->mix_nr = nr;
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priv->mix = mix;
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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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mix = rsnd_mix_get(priv, i);
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snprintf(name, MIX_NAME_SIZE, "%s.%d",
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MIX_NAME, i);
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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_mix_probe_done;
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}
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ret = rsnd_mod_init(priv, rsnd_mod_get(mix), &rsnd_mix_ops,
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clk, rsnd_mod_get_status, RSND_MOD_MIX, i);
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if (ret) {
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of_node_put(np);
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goto rsnd_mix_probe_done;
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}
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i++;
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}
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rsnd_mix_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_mix_remove(struct rsnd_priv *priv)
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{
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struct rsnd_mix *mix;
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int i;
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for_each_rsnd_mix(mix, priv, i) {
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rsnd_mod_quit(rsnd_mod_get(mix));
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}
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}
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