diff options
Diffstat (limited to 'sound/soc/sh/rcar/dvc.c')
-rw-r--r-- | sound/soc/sh/rcar/dvc.c | 396 |
1 files changed, 396 insertions, 0 deletions
diff --git a/sound/soc/sh/rcar/dvc.c b/sound/soc/sh/rcar/dvc.c new file mode 100644 index 0000000000..16befcbc31 --- /dev/null +++ b/sound/soc/sh/rcar/dvc.c @@ -0,0 +1,396 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Renesas R-Car DVC support +// +// Copyright (C) 2014 Renesas Solutions Corp. +// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + +/* + * Playback Volume + * amixer set "DVC Out" 100% + * + * Capture Volume + * amixer set "DVC In" 100% + * + * Playback Mute + * amixer set "DVC Out Mute" on + * + * Capture Mute + * amixer set "DVC In Mute" on + * + * Volume Ramp + * amixer set "DVC Out Ramp Up Rate" "0.125 dB/64 steps" + * amixer set "DVC Out Ramp Down Rate" "0.125 dB/512 steps" + * amixer set "DVC Out Ramp" on + * aplay xxx.wav & + * amixer set "DVC Out" 80% // Volume Down + * amixer set "DVC Out" 100% // Volume Up + */ + +#include "rsnd.h" + +#define RSND_DVC_NAME_SIZE 16 + +#define DVC_NAME "dvc" + +struct rsnd_dvc { + struct rsnd_mod mod; + struct rsnd_kctrl_cfg_m volume; + struct rsnd_kctrl_cfg_m mute; + struct rsnd_kctrl_cfg_s ren; /* Ramp Enable */ + struct rsnd_kctrl_cfg_s rup; /* Ramp Rate Up */ + struct rsnd_kctrl_cfg_s rdown; /* Ramp Rate Down */ +}; + +#define rsnd_dvc_get(priv, id) ((struct rsnd_dvc *)(priv->dvc) + id) +#define rsnd_dvc_nr(priv) ((priv)->dvc_nr) + +#define rsnd_mod_to_dvc(_mod) \ + container_of((_mod), struct rsnd_dvc, mod) + +#define for_each_rsnd_dvc(pos, priv, i) \ + for ((i) = 0; \ + ((i) < rsnd_dvc_nr(priv)) && \ + ((pos) = (struct rsnd_dvc *)(priv)->dvc + i); \ + i++) + +static void rsnd_dvc_activation(struct rsnd_mod *mod) +{ + rsnd_mod_write(mod, DVC_SWRSR, 0); + rsnd_mod_write(mod, DVC_SWRSR, 1); +} + +static void rsnd_dvc_halt(struct rsnd_mod *mod) +{ + rsnd_mod_write(mod, DVC_DVUIR, 1); + rsnd_mod_write(mod, DVC_SWRSR, 0); +} + +#define rsnd_dvc_get_vrpdr(dvc) (rsnd_kctrl_vals(dvc->rup) << 8 | \ + rsnd_kctrl_vals(dvc->rdown)) +#define rsnd_dvc_get_vrdbr(dvc) (0x3ff - (rsnd_kctrl_valm(dvc->volume, 0) >> 13)) + +static void rsnd_dvc_volume_parameter(struct rsnd_dai_stream *io, + struct rsnd_mod *mod) +{ + struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); + u32 val[RSND_MAX_CHANNELS]; + int i; + + /* Enable Ramp */ + if (rsnd_kctrl_vals(dvc->ren)) + for (i = 0; i < RSND_MAX_CHANNELS; i++) + val[i] = rsnd_kctrl_max(dvc->volume); + else + for (i = 0; i < RSND_MAX_CHANNELS; i++) + val[i] = rsnd_kctrl_valm(dvc->volume, i); + + /* Enable Digital Volume */ + for (i = 0; i < RSND_MAX_CHANNELS; i++) + rsnd_mod_write(mod, DVC_VOLxR(i), val[i]); +} + +static void rsnd_dvc_volume_init(struct rsnd_dai_stream *io, + struct rsnd_mod *mod) +{ + struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); + u32 adinr = 0; + u32 dvucr = 0; + u32 vrctr = 0; + u32 vrpdr = 0; + u32 vrdbr = 0; + + adinr = rsnd_get_adinr_bit(mod, io) | + rsnd_runtime_channel_after_ctu(io); + + /* Enable Digital Volume, Zero Cross Mute Mode */ + dvucr |= 0x101; + + /* Enable Ramp */ + if (rsnd_kctrl_vals(dvc->ren)) { + dvucr |= 0x10; + + /* + * FIXME !! + * use scale-downed Digital Volume + * as Volume Ramp + * 7F FFFF -> 3FF + */ + vrctr = 0xff; + vrpdr = rsnd_dvc_get_vrpdr(dvc); + vrdbr = rsnd_dvc_get_vrdbr(dvc); + } + + /* Initialize operation */ + rsnd_mod_write(mod, DVC_DVUIR, 1); + + /* General Information */ + rsnd_mod_write(mod, DVC_ADINR, adinr); + rsnd_mod_write(mod, DVC_DVUCR, dvucr); + + /* Volume Ramp Parameter */ + rsnd_mod_write(mod, DVC_VRCTR, vrctr); + rsnd_mod_write(mod, DVC_VRPDR, vrpdr); + rsnd_mod_write(mod, DVC_VRDBR, vrdbr); + + /* Digital Volume Function Parameter */ + rsnd_dvc_volume_parameter(io, mod); + + /* cancel operation */ + rsnd_mod_write(mod, DVC_DVUIR, 0); +} + +static void rsnd_dvc_volume_update(struct rsnd_dai_stream *io, + struct rsnd_mod *mod) +{ + struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); + u32 zcmcr = 0; + u32 vrpdr = 0; + u32 vrdbr = 0; + int i; + + for (i = 0; i < rsnd_kctrl_size(dvc->mute); i++) + zcmcr |= (!!rsnd_kctrl_valm(dvc->mute, i)) << i; + + if (rsnd_kctrl_vals(dvc->ren)) { + vrpdr = rsnd_dvc_get_vrpdr(dvc); + vrdbr = rsnd_dvc_get_vrdbr(dvc); + } + + /* Disable DVC Register access */ + rsnd_mod_write(mod, DVC_DVUER, 0); + + /* Zero Cross Mute Function */ + rsnd_mod_write(mod, DVC_ZCMCR, zcmcr); + + /* Volume Ramp Function */ + rsnd_mod_write(mod, DVC_VRPDR, vrpdr); + rsnd_mod_write(mod, DVC_VRDBR, vrdbr); + /* add DVC_VRWTR here */ + + /* Digital Volume Function Parameter */ + rsnd_dvc_volume_parameter(io, mod); + + /* Enable DVC Register access */ + rsnd_mod_write(mod, DVC_DVUER, 1); +} + +static int rsnd_dvc_probe_(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + struct rsnd_priv *priv) +{ + return rsnd_cmd_attach(io, rsnd_mod_id(mod)); +} + +static int rsnd_dvc_init(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + struct rsnd_priv *priv) +{ + int ret; + + ret = rsnd_mod_power_on(mod); + if (ret < 0) + return ret; + + rsnd_dvc_activation(mod); + + rsnd_dvc_volume_init(io, mod); + + rsnd_dvc_volume_update(io, mod); + + return 0; +} + +static int rsnd_dvc_quit(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + struct rsnd_priv *priv) +{ + rsnd_dvc_halt(mod); + + rsnd_mod_power_off(mod); + + return 0; +} + +static int rsnd_dvc_pcm_new(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + struct snd_soc_pcm_runtime *rtd) +{ + struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); + struct rsnd_dai *rdai = rsnd_io_to_rdai(io); + int is_play = rsnd_io_is_play(io); + int channels = rsnd_rdai_channels_get(rdai); + int ret; + + /* Volume */ + ret = rsnd_kctrl_new_m(mod, io, rtd, + is_play ? + "DVC Out Playback Volume" : "DVC In Capture Volume", + rsnd_kctrl_accept_anytime, + rsnd_dvc_volume_update, + &dvc->volume, channels, + 0x00800000 - 1); + if (ret < 0) + return ret; + + /* Mute */ + ret = rsnd_kctrl_new_m(mod, io, rtd, + is_play ? + "DVC Out Mute Switch" : "DVC In Mute Switch", + rsnd_kctrl_accept_anytime, + rsnd_dvc_volume_update, + &dvc->mute, channels, + 1); + if (ret < 0) + return ret; + + /* Ramp */ + ret = rsnd_kctrl_new_s(mod, io, rtd, + is_play ? + "DVC Out Ramp Switch" : "DVC In Ramp Switch", + rsnd_kctrl_accept_anytime, + rsnd_dvc_volume_update, + &dvc->ren, 1); + if (ret < 0) + return ret; + + ret = rsnd_kctrl_new_e(mod, io, rtd, + is_play ? + "DVC Out Ramp Up Rate" : "DVC In Ramp Up Rate", + rsnd_kctrl_accept_anytime, + rsnd_dvc_volume_update, + &dvc->rup, + volume_ramp_rate, + VOLUME_RAMP_MAX_DVC); + if (ret < 0) + return ret; + + ret = rsnd_kctrl_new_e(mod, io, rtd, + is_play ? + "DVC Out Ramp Down Rate" : "DVC In Ramp Down Rate", + rsnd_kctrl_accept_anytime, + rsnd_dvc_volume_update, + &dvc->rdown, + volume_ramp_rate, + VOLUME_RAMP_MAX_DVC); + + if (ret < 0) + return ret; + + return 0; +} + +static struct dma_chan *rsnd_dvc_dma_req(struct rsnd_dai_stream *io, + struct rsnd_mod *mod) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + + return rsnd_dma_request_channel(rsnd_dvc_of_node(priv), + DVC_NAME, mod, "tx"); +} + +#ifdef CONFIG_DEBUG_FS +static void rsnd_dvc_debug_info(struct seq_file *m, + struct rsnd_dai_stream *io, + struct rsnd_mod *mod) +{ + rsnd_debugfs_mod_reg_show(m, mod, RSND_GEN2_SCU, + 0xe00 + rsnd_mod_id(mod) * 0x100, 0x60); +} +#define DEBUG_INFO .debug_info = rsnd_dvc_debug_info +#else +#define DEBUG_INFO +#endif + +static struct rsnd_mod_ops rsnd_dvc_ops = { + .name = DVC_NAME, + .dma_req = rsnd_dvc_dma_req, + .probe = rsnd_dvc_probe_, + .init = rsnd_dvc_init, + .quit = rsnd_dvc_quit, + .pcm_new = rsnd_dvc_pcm_new, + .get_status = rsnd_mod_get_status, + DEBUG_INFO +}; + +struct rsnd_mod *rsnd_dvc_mod_get(struct rsnd_priv *priv, int id) +{ + if (WARN_ON(id < 0 || id >= rsnd_dvc_nr(priv))) + id = 0; + + return rsnd_mod_get(rsnd_dvc_get(priv, id)); +} + +int rsnd_dvc_probe(struct rsnd_priv *priv) +{ + struct device_node *node; + struct device_node *np; + struct device *dev = rsnd_priv_to_dev(priv); + struct rsnd_dvc *dvc; + struct clk *clk; + char name[RSND_DVC_NAME_SIZE]; + int i, nr, ret; + + /* This driver doesn't support Gen1 at this point */ + if (rsnd_is_gen1(priv)) + return 0; + + node = rsnd_dvc_of_node(priv); + if (!node) + return 0; /* not used is not error */ + + nr = of_get_child_count(node); + if (!nr) { + ret = -EINVAL; + goto rsnd_dvc_probe_done; + } + + dvc = devm_kcalloc(dev, nr, sizeof(*dvc), GFP_KERNEL); + if (!dvc) { + ret = -ENOMEM; + goto rsnd_dvc_probe_done; + } + + priv->dvc_nr = nr; + priv->dvc = dvc; + + i = 0; + ret = 0; + for_each_child_of_node(node, np) { + dvc = rsnd_dvc_get(priv, i); + + snprintf(name, RSND_DVC_NAME_SIZE, "%s.%d", + DVC_NAME, i); + + clk = devm_clk_get(dev, name); + if (IS_ERR(clk)) { + ret = PTR_ERR(clk); + of_node_put(np); + goto rsnd_dvc_probe_done; + } + + ret = rsnd_mod_init(priv, rsnd_mod_get(dvc), &rsnd_dvc_ops, + clk, RSND_MOD_DVC, i); + if (ret) { + of_node_put(np); + goto rsnd_dvc_probe_done; + } + + i++; + } + +rsnd_dvc_probe_done: + of_node_put(node); + + return ret; +} + +void rsnd_dvc_remove(struct rsnd_priv *priv) +{ + struct rsnd_dvc *dvc; + int i; + + for_each_rsnd_dvc(dvc, priv, i) { + rsnd_mod_quit(rsnd_mod_get(dvc)); + } +} |