383 строки
8.6 KiB
C
383 строки
8.6 KiB
C
/*
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* Renesas R-Car DVC support
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*
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* Copyright (C) 2014 Renesas Solutions Corp.
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* 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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#include "rsnd.h"
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#define RSND_DVC_NAME_SIZE 16
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#define DVC_NAME "dvc"
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struct rsnd_dvc {
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struct rsnd_dvc_platform_info *info; /* rcar_snd.h */
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struct rsnd_mod mod;
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struct rsnd_kctrl_cfg_m volume;
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struct rsnd_kctrl_cfg_m mute;
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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 rdown; /* Ramp Rate Down */
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};
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#define rsnd_dvc_nr(priv) ((priv)->dvc_nr)
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#define rsnd_dvc_of_node(priv) \
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of_get_child_by_name(rsnd_priv_to_dev(priv)->of_node, "rcar_sound,dvc")
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#define rsnd_mod_to_dvc(_mod) \
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container_of((_mod), struct rsnd_dvc, mod)
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#define for_each_rsnd_dvc(pos, priv, i) \
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for ((i) = 0; \
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((i) < rsnd_dvc_nr(priv)) && \
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((pos) = (struct rsnd_dvc *)(priv)->dvc + i); \
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i++)
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static const char * const dvc_ramp_rate[] = {
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"128 dB/1 step", /* 00000 */
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"64 dB/1 step", /* 00001 */
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"32 dB/1 step", /* 00010 */
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"16 dB/1 step", /* 00011 */
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"8 dB/1 step", /* 00100 */
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"4 dB/1 step", /* 00101 */
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"2 dB/1 step", /* 00110 */
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"1 dB/1 step", /* 00111 */
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"0.5 dB/1 step", /* 01000 */
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"0.25 dB/1 step", /* 01001 */
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"0.125 dB/1 step", /* 01010 */
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"0.125 dB/2 steps", /* 01011 */
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"0.125 dB/4 steps", /* 01100 */
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"0.125 dB/8 steps", /* 01101 */
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"0.125 dB/16 steps", /* 01110 */
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"0.125 dB/32 steps", /* 01111 */
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"0.125 dB/64 steps", /* 10000 */
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"0.125 dB/128 steps", /* 10001 */
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"0.125 dB/256 steps", /* 10010 */
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"0.125 dB/512 steps", /* 10011 */
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"0.125 dB/1024 steps", /* 10100 */
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"0.125 dB/2048 steps", /* 10101 */
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"0.125 dB/4096 steps", /* 10110 */
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"0.125 dB/8192 steps", /* 10111 */
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};
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static void rsnd_dvc_soft_reset(struct rsnd_mod *mod)
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{
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rsnd_mod_write(mod, DVC_SWRSR, 0);
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rsnd_mod_write(mod, DVC_SWRSR, 1);
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}
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#define rsnd_dvc_initialize_lock(mod) __rsnd_dvc_initialize_lock(mod, 1)
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#define rsnd_dvc_initialize_unlock(mod) __rsnd_dvc_initialize_lock(mod, 0)
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static void __rsnd_dvc_initialize_lock(struct rsnd_mod *mod, u32 enable)
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{
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rsnd_mod_write(mod, DVC_DVUIR, enable);
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}
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static void rsnd_dvc_volume_update(struct rsnd_dai_stream *io,
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struct rsnd_mod *mod)
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{
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struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
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u32 val[RSND_DVC_CHANNELS];
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u32 dvucr = 0;
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u32 mute = 0;
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int i;
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for (i = 0; i < dvc->mute.cfg.size; i++)
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mute |= (!!dvc->mute.cfg.val[i]) << i;
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/* Disable DVC Register access */
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rsnd_mod_write(mod, DVC_DVUER, 0);
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/* Enable Ramp */
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if (dvc->ren.val) {
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dvucr |= 0x10;
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/* Digital Volume Max */
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for (i = 0; i < RSND_DVC_CHANNELS; i++)
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val[i] = dvc->volume.cfg.max;
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rsnd_mod_write(mod, DVC_VRCTR, 0xff);
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rsnd_mod_write(mod, DVC_VRPDR, dvc->rup.val << 8 |
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dvc->rdown.val);
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/*
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* FIXME !!
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* use scale-downed Digital Volume
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* as Volume Ramp
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* 7F FFFF -> 3FF
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*/
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rsnd_mod_write(mod, DVC_VRDBR,
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0x3ff - (dvc->volume.val[0] >> 13));
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} else {
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for (i = 0; i < RSND_DVC_CHANNELS; i++)
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val[i] = dvc->volume.val[i];
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}
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/* Enable Digital Volume */
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dvucr |= 0x100;
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rsnd_mod_write(mod, DVC_VOL0R, val[0]);
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rsnd_mod_write(mod, DVC_VOL1R, val[1]);
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/* Enable Mute */
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if (mute) {
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dvucr |= 0x1;
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rsnd_mod_write(mod, DVC_ZCMCR, mute);
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}
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rsnd_mod_write(mod, DVC_DVUCR, dvucr);
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/* Enable DVC Register access */
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rsnd_mod_write(mod, DVC_DVUER, 1);
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}
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static int rsnd_dvc_remove_gen2(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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struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
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rsnd_kctrl_remove(dvc->volume);
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rsnd_kctrl_remove(dvc->mute);
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rsnd_kctrl_remove(dvc->ren);
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rsnd_kctrl_remove(dvc->rup);
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rsnd_kctrl_remove(dvc->rdown);
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return 0;
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}
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static int rsnd_dvc_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_hw_start(mod);
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rsnd_dvc_soft_reset(mod);
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rsnd_dvc_initialize_lock(mod);
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rsnd_path_parse(priv, io);
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rsnd_mod_write(mod, DVC_ADINR, rsnd_get_adinr_bit(mod, io));
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/* ch0/ch1 Volume */
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rsnd_dvc_volume_update(io, mod);
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rsnd_adg_set_cmd_timsel_gen2(mod, io);
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return 0;
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}
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static int rsnd_dvc_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_mod_hw_stop(mod);
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return 0;
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}
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static int rsnd_dvc_start(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_dvc_initialize_unlock(mod);
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rsnd_mod_write(mod, CMD_CTRL, 0x10);
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return 0;
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}
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static int rsnd_dvc_stop(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_write(mod, CMD_CTRL, 0);
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return 0;
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}
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static int rsnd_dvc_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_dvc *dvc = rsnd_mod_to_dvc(mod);
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int is_play = rsnd_io_is_play(io);
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int ret;
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/* Volume */
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ret = rsnd_kctrl_new_m(mod, io, rtd,
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is_play ?
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"DVC Out Playback Volume" : "DVC In Capture Volume",
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rsnd_dvc_volume_update,
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&dvc->volume, 0x00800000 - 1);
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if (ret < 0)
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return ret;
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/* Mute */
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ret = rsnd_kctrl_new_m(mod, io, rtd,
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is_play ?
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"DVC Out Mute Switch" : "DVC In Mute Switch",
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rsnd_dvc_volume_update,
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&dvc->mute, 1);
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if (ret < 0)
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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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is_play ?
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"DVC Out Ramp Switch" : "DVC In Ramp Switch",
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rsnd_dvc_volume_update,
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&dvc->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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is_play ?
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"DVC Out Ramp Up Rate" : "DVC In Ramp Up Rate",
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&dvc->rup,
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rsnd_dvc_volume_update,
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dvc_ramp_rate, ARRAY_SIZE(dvc_ramp_rate));
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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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is_play ?
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"DVC Out Ramp Down Rate" : "DVC In Ramp Down Rate",
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&dvc->rdown,
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rsnd_dvc_volume_update,
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dvc_ramp_rate, ARRAY_SIZE(dvc_ramp_rate));
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if (ret < 0)
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return ret;
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return 0;
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}
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static struct dma_chan *rsnd_dvc_dma_req(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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return rsnd_dma_request_channel(rsnd_dvc_of_node(priv),
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mod, "tx");
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}
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static struct rsnd_mod_ops rsnd_dvc_ops = {
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.name = DVC_NAME,
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.dma_req = rsnd_dvc_dma_req,
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.remove = rsnd_dvc_remove_gen2,
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.init = rsnd_dvc_init,
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.quit = rsnd_dvc_quit,
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.start = rsnd_dvc_start,
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.stop = rsnd_dvc_stop,
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.pcm_new = rsnd_dvc_pcm_new,
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};
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struct rsnd_mod *rsnd_dvc_mod_get(struct rsnd_priv *priv, int id)
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{
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if (WARN_ON(id < 0 || id >= rsnd_dvc_nr(priv)))
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id = 0;
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return &((struct rsnd_dvc *)(priv->dvc) + id)->mod;
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}
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static void rsnd_of_parse_dvc(struct platform_device *pdev,
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const struct rsnd_of_data *of_data,
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struct rsnd_priv *priv)
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{
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struct device_node *node;
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struct rsnd_dvc_platform_info *dvc_info;
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struct rcar_snd_info *info = rsnd_priv_to_info(priv);
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struct device *dev = &pdev->dev;
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int nr;
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if (!of_data)
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return;
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node = of_get_child_by_name(dev->of_node, "rcar_sound,dvc");
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if (!node)
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return;
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nr = of_get_child_count(node);
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if (!nr)
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goto rsnd_of_parse_dvc_end;
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dvc_info = devm_kzalloc(dev,
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sizeof(struct rsnd_dvc_platform_info) * nr,
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GFP_KERNEL);
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if (!dvc_info) {
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dev_err(dev, "dvc info allocation error\n");
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goto rsnd_of_parse_dvc_end;
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}
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info->dvc_info = dvc_info;
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info->dvc_info_nr = nr;
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rsnd_of_parse_dvc_end:
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of_node_put(node);
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}
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int rsnd_dvc_probe(struct platform_device *pdev,
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const struct rsnd_of_data *of_data,
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struct rsnd_priv *priv)
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{
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struct rcar_snd_info *info = rsnd_priv_to_info(priv);
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struct device *dev = rsnd_priv_to_dev(priv);
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struct rsnd_dvc *dvc;
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struct clk *clk;
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char name[RSND_DVC_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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dev_warn(dev, "CMD is not supported on Gen1\n");
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return -EINVAL;
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}
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rsnd_of_parse_dvc(pdev, of_data, priv);
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nr = info->dvc_info_nr;
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if (!nr)
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return 0;
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dvc = devm_kzalloc(dev, sizeof(*dvc) * nr, GFP_KERNEL);
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if (!dvc)
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return -ENOMEM;
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priv->dvc_nr = nr;
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priv->dvc = dvc;
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for_each_rsnd_dvc(dvc, priv, i) {
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snprintf(name, RSND_DVC_NAME_SIZE, "%s.%d",
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DVC_NAME, i);
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clk = devm_clk_get(dev, name);
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if (IS_ERR(clk))
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return PTR_ERR(clk);
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dvc->info = &info->dvc_info[i];
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ret = rsnd_mod_init(priv, &dvc->mod, &rsnd_dvc_ops,
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clk, RSND_MOD_DVC, i);
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if (ret)
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return ret;
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}
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return 0;
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}
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void rsnd_dvc_remove(struct platform_device *pdev,
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struct rsnd_priv *priv)
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{
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struct rsnd_dvc *dvc;
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int i;
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for_each_rsnd_dvc(dvc, priv, i) {
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rsnd_mod_quit(&dvc->mod);
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}
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}
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