397 lines
8.5 KiB
C
397 lines
8.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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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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* Playback Volume
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* amixer set "DVC Out" 100%
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*
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* Capture Volume
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* amixer set "DVC In" 100%
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*
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* Playback Mute
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* amixer set "DVC Out Mute" on
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*
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* Capture Mute
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* amixer set "DVC In Mute" on
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*
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* Volume Ramp
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* amixer set "DVC Out Ramp Up Rate" "0.125 dB/64 steps"
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* amixer set "DVC Out Ramp Down Rate" "0.125 dB/512 steps"
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* amixer set "DVC Out Ramp" on
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* aplay xxx.wav &
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* amixer set "DVC Out" 80% // Volume Down
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* amixer set "DVC Out" 100% // Volume Up
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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_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_get(priv, id) ((struct rsnd_dvc *)(priv->dvc) + id)
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#define rsnd_dvc_nr(priv) ((priv)->dvc_nr)
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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 void rsnd_dvc_activation(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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static void rsnd_dvc_halt(struct rsnd_mod *mod)
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{
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rsnd_mod_write(mod, DVC_DVUIR, 1);
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rsnd_mod_write(mod, DVC_SWRSR, 0);
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}
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#define rsnd_dvc_get_vrpdr(dvc) (rsnd_kctrl_vals(dvc->rup) << 8 | \
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rsnd_kctrl_vals(dvc->rdown))
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#define rsnd_dvc_get_vrdbr(dvc) (0x3ff - (rsnd_kctrl_valm(dvc->volume, 0) >> 13))
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static void rsnd_dvc_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_dvc *dvc = rsnd_mod_to_dvc(mod);
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u32 val[RSND_MAX_CHANNELS];
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int i;
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/* Enable Ramp */
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if (rsnd_kctrl_vals(dvc->ren))
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for (i = 0; i < RSND_MAX_CHANNELS; i++)
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val[i] = rsnd_kctrl_max(dvc->volume);
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else
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for (i = 0; i < RSND_MAX_CHANNELS; i++)
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val[i] = rsnd_kctrl_valm(dvc->volume, i);
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/* Enable Digital Volume */
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for (i = 0; i < RSND_MAX_CHANNELS; i++)
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rsnd_mod_write(mod, DVC_VOLxR(i), val[i]);
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}
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static void rsnd_dvc_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_dvc *dvc = rsnd_mod_to_dvc(mod);
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u32 adinr = 0;
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u32 dvucr = 0;
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u32 vrctr = 0;
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u32 vrpdr = 0;
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u32 vrdbr = 0;
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adinr = rsnd_get_adinr_bit(mod, io) |
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rsnd_runtime_channel_after_ctu(io);
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/* Enable Digital Volume, Zero Cross Mute Mode */
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dvucr |= 0x101;
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/* Enable Ramp */
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if (rsnd_kctrl_vals(dvc->ren)) {
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dvucr |= 0x10;
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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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vrctr = 0xff;
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vrpdr = rsnd_dvc_get_vrpdr(dvc);
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vrdbr = rsnd_dvc_get_vrdbr(dvc);
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}
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/* Initialize operation */
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rsnd_mod_write(mod, DVC_DVUIR, 1);
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/* General Information */
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rsnd_mod_write(mod, DVC_ADINR, adinr);
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rsnd_mod_write(mod, DVC_DVUCR, dvucr);
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/* Volume Ramp Parameter */
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rsnd_mod_write(mod, DVC_VRCTR, vrctr);
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rsnd_mod_write(mod, DVC_VRPDR, vrpdr);
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rsnd_mod_write(mod, DVC_VRDBR, vrdbr);
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/* Digital Volume Function Parameter */
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rsnd_dvc_volume_parameter(io, mod);
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/* cancel operation */
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rsnd_mod_write(mod, DVC_DVUIR, 0);
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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 zcmcr = 0;
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u32 vrpdr = 0;
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u32 vrdbr = 0;
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int i;
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for (i = 0; i < rsnd_kctrl_size(dvc->mute); i++)
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zcmcr |= (!!rsnd_kctrl_valm(dvc->mute, i)) << i;
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if (rsnd_kctrl_vals(dvc->ren)) {
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vrpdr = rsnd_dvc_get_vrpdr(dvc);
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vrdbr = rsnd_dvc_get_vrdbr(dvc);
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}
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/* Disable DVC Register access */
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rsnd_mod_write(mod, DVC_DVUER, 0);
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/* Zero Cross Mute Function */
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rsnd_mod_write(mod, DVC_ZCMCR, zcmcr);
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/* Volume Ramp Function */
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rsnd_mod_write(mod, DVC_VRPDR, vrpdr);
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rsnd_mod_write(mod, DVC_VRDBR, vrdbr);
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/* add DVC_VRWTR here */
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/* Digital Volume Function Parameter */
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rsnd_dvc_volume_parameter(io, mod);
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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_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_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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int ret;
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ret = rsnd_mod_power_on(mod);
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if (ret < 0)
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return ret;
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rsnd_dvc_activation(mod);
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rsnd_dvc_volume_init(io, mod);
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rsnd_dvc_volume_update(io, mod);
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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_dvc_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_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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struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
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int is_play = rsnd_io_is_play(io);
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int channels = rsnd_rdai_channels_get(rdai);
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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_kctrl_accept_anytime,
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rsnd_dvc_volume_update,
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&dvc->volume, channels,
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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_kctrl_accept_anytime,
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rsnd_dvc_volume_update,
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&dvc->mute, channels,
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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_kctrl_accept_anytime,
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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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rsnd_kctrl_accept_anytime,
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rsnd_dvc_volume_update,
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&dvc->rup,
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volume_ramp_rate,
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VOLUME_RAMP_MAX_DVC);
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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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rsnd_kctrl_accept_anytime,
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rsnd_dvc_volume_update,
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&dvc->rdown,
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volume_ramp_rate,
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VOLUME_RAMP_MAX_DVC);
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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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DVC_NAME, mod, "tx");
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}
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#ifdef CONFIG_DEBUG_FS
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static void rsnd_dvc_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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0xe00 + rsnd_mod_id(mod) * 0x100, 0x60);
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}
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#define DEBUG_INFO .debug_info = rsnd_dvc_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_dvc_ops = {
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.name = DVC_NAME,
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.dma_req = rsnd_dvc_dma_req,
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.probe = rsnd_dvc_probe_,
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.init = rsnd_dvc_init,
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.quit = rsnd_dvc_quit,
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.pcm_new = rsnd_dvc_pcm_new,
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.get_status = rsnd_mod_get_status,
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DEBUG_INFO
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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 rsnd_mod_get(rsnd_dvc_get(priv, id));
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}
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int rsnd_dvc_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_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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return 0;
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node = rsnd_dvc_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_dvc_probe_done;
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}
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dvc = devm_kcalloc(dev, nr, sizeof(*dvc), GFP_KERNEL);
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if (!dvc) {
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ret = -ENOMEM;
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goto rsnd_dvc_probe_done;
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}
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priv->dvc_nr = nr;
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priv->dvc = dvc;
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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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dvc = rsnd_dvc_get(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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ret = PTR_ERR(clk);
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of_node_put(np);
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goto rsnd_dvc_probe_done;
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}
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ret = rsnd_mod_init(priv, rsnd_mod_get(dvc), &rsnd_dvc_ops,
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clk, RSND_MOD_DVC, i);
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if (ret) {
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of_node_put(np);
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goto rsnd_dvc_probe_done;
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}
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i++;
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}
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rsnd_dvc_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_dvc_remove(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(rsnd_mod_get(dvc));
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}
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}
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