| /* |
| * Renesas R-Car DVC support |
| * |
| * Copyright (C) 2014 Renesas Solutions Corp. |
| * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| #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_dvc_of_node(priv) \ |
| of_get_child_by_name(rsnd_priv_to_dev(priv)->of_node, "rcar_sound,dvc") |
| |
| #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 const char * const dvc_ramp_rate[] = { |
| "128 dB/1 step", /* 00000 */ |
| "64 dB/1 step", /* 00001 */ |
| "32 dB/1 step", /* 00010 */ |
| "16 dB/1 step", /* 00011 */ |
| "8 dB/1 step", /* 00100 */ |
| "4 dB/1 step", /* 00101 */ |
| "2 dB/1 step", /* 00110 */ |
| "1 dB/1 step", /* 00111 */ |
| "0.5 dB/1 step", /* 01000 */ |
| "0.25 dB/1 step", /* 01001 */ |
| "0.125 dB/1 step", /* 01010 */ |
| "0.125 dB/2 steps", /* 01011 */ |
| "0.125 dB/4 steps", /* 01100 */ |
| "0.125 dB/8 steps", /* 01101 */ |
| "0.125 dB/16 steps", /* 01110 */ |
| "0.125 dB/32 steps", /* 01111 */ |
| "0.125 dB/64 steps", /* 10000 */ |
| "0.125 dB/128 steps", /* 10001 */ |
| "0.125 dB/256 steps", /* 10010 */ |
| "0.125 dB/512 steps", /* 10011 */ |
| "0.125 dB/1024 steps", /* 10100 */ |
| "0.125 dB/2048 steps", /* 10101 */ |
| "0.125 dB/4096 steps", /* 10110 */ |
| "0.125 dB/8192 steps", /* 10111 */ |
| }; |
| |
| 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) (dvc->rup.val << 8 | dvc->rdown.val) |
| #define rsnd_dvc_get_vrdbr(dvc) (0x3ff - (dvc->volume.val[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 (dvc->ren.val) |
| for (i = 0; i < RSND_MAX_CHANNELS; i++) |
| val[i] = dvc->volume.cfg.max; |
| else |
| for (i = 0; i < RSND_MAX_CHANNELS; i++) |
| val[i] = dvc->volume.val[i]; |
| |
| /* Enable Digital Volume */ |
| rsnd_mod_write(mod, DVC_VOL0R, val[0]); |
| rsnd_mod_write(mod, DVC_VOL1R, val[1]); |
| rsnd_mod_write(mod, DVC_VOL2R, val[2]); |
| rsnd_mod_write(mod, DVC_VOL3R, val[3]); |
| rsnd_mod_write(mod, DVC_VOL4R, val[4]); |
| rsnd_mod_write(mod, DVC_VOL5R, val[5]); |
| rsnd_mod_write(mod, DVC_VOL6R, val[6]); |
| rsnd_mod_write(mod, DVC_VOL7R, val[7]); |
| } |
| |
| 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_get_adinr_chan(mod, io); |
| |
| /* Enable Digital Volume, Zero Cross Mute Mode */ |
| dvucr |= 0x101; |
| |
| /* Enable Ramp */ |
| if (dvc->ren.val) { |
| 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 < dvc->mute.cfg.size; i++) |
| zcmcr |= (!!dvc->mute.cfg.val[i]) << i; |
| |
| if (dvc->ren.val) { |
| 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_remove_(struct rsnd_mod *mod, |
| struct rsnd_dai_stream *io, |
| struct rsnd_priv *priv) |
| { |
| struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod); |
| |
| rsnd_kctrl_remove(dvc->volume); |
| rsnd_kctrl_remove(dvc->mute); |
| rsnd_kctrl_remove(dvc->ren); |
| rsnd_kctrl_remove(dvc->rup); |
| rsnd_kctrl_remove(dvc->rdown); |
| |
| return 0; |
| } |
| |
| static int rsnd_dvc_init(struct rsnd_mod *mod, |
| struct rsnd_dai_stream *io, |
| struct rsnd_priv *priv) |
| { |
| rsnd_mod_power_on(mod); |
| |
| 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); |
| int is_play = rsnd_io_is_play(io); |
| int slots = rsnd_get_slot(io); |
| int ret; |
| |
| /* Volume */ |
| ret = rsnd_kctrl_new_m(mod, io, rtd, |
| is_play ? |
| "DVC Out Playback Volume" : "DVC In Capture Volume", |
| rsnd_dvc_volume_update, |
| &dvc->volume, slots, |
| 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_dvc_volume_update, |
| &dvc->mute, slots, |
| 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_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", |
| &dvc->rup, |
| rsnd_dvc_volume_update, |
| dvc_ramp_rate, ARRAY_SIZE(dvc_ramp_rate)); |
| 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", |
| &dvc->rdown, |
| rsnd_dvc_volume_update, |
| dvc_ramp_rate, ARRAY_SIZE(dvc_ramp_rate)); |
| |
| 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), |
| mod, "tx"); |
| } |
| |
| static struct rsnd_mod_ops rsnd_dvc_ops = { |
| .name = DVC_NAME, |
| .dma_req = rsnd_dvc_dma_req, |
| .probe = rsnd_dvc_probe_, |
| .remove = rsnd_dvc_remove_, |
| .init = rsnd_dvc_init, |
| .quit = rsnd_dvc_quit, |
| .pcm_new = rsnd_dvc_pcm_new, |
| }; |
| |
| 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_kzalloc(dev, sizeof(*dvc) * nr, 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); |
| goto rsnd_dvc_probe_done; |
| } |
| |
| ret = rsnd_mod_init(priv, rsnd_mod_get(dvc), &rsnd_dvc_ops, |
| clk, rsnd_mod_get_status, RSND_MOD_DVC, i); |
| if (ret) |
| 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)); |
| } |
| } |