/* * Renesas R-Car SRU/SCU/SSIU/SSI support * * Copyright (C) 2013 Renesas Solutions Corp. * Kuninori Morimoto * * Based on fsi.c * Kuninori Morimoto * * 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. */ /* * Renesas R-Car sound device structure * * Gen1 * * SRU : Sound Routing Unit * - SRC : Sampling Rate Converter * - CMD * - CTU : Channel Count Conversion Unit * - MIX : Mixer * - DVC : Digital Volume and Mute Function * - SSI : Serial Sound Interface * * Gen2 * * SCU : Sampling Rate Converter Unit * - SRC : Sampling Rate Converter * - CMD * - CTU : Channel Count Conversion Unit * - MIX : Mixer * - DVC : Digital Volume and Mute Function * SSIU : Serial Sound Interface Unit * - SSI : Serial Sound Interface */ /* * driver data Image * * rsnd_priv * | * | ** this depends on Gen1/Gen2 * | * +- gen * | * | ** these depend on data path * | ** gen and platform data control it * | * +- rdai[0] * | | sru ssiu ssi * | +- playback -> [mod] -> [mod] -> [mod] -> ... * | | * | | sru ssiu ssi * | +- capture -> [mod] -> [mod] -> [mod] -> ... * | * +- rdai[1] * | | sru ssiu ssi * | +- playback -> [mod] -> [mod] -> [mod] -> ... * | | * | | sru ssiu ssi * | +- capture -> [mod] -> [mod] -> [mod] -> ... * ... * | * | ** these control ssi * | * +- ssi * | | * | +- ssi[0] * | +- ssi[1] * | +- ssi[2] * | ... * | * | ** these control src * | * +- src * | * +- src[0] * +- src[1] * +- src[2] * ... * * * for_each_rsnd_dai(xx, priv, xx) * rdai[0] => rdai[1] => rdai[2] => ... * * for_each_rsnd_mod(xx, rdai, xx) * [mod] => [mod] => [mod] => ... * * rsnd_dai_call(xxx, fn ) * [mod]->fn() -> [mod]->fn() -> [mod]->fn()... * */ #include #include "rsnd.h" #define RSND_RATES SNDRV_PCM_RATE_8000_96000 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE) static const struct rsnd_of_data rsnd_of_data_gen1 = { .flags = RSND_GEN1, }; static const struct rsnd_of_data rsnd_of_data_gen2 = { .flags = RSND_GEN2, }; static const struct of_device_id rsnd_of_match[] = { { .compatible = "renesas,rcar_sound-gen1", .data = &rsnd_of_data_gen1 }, { .compatible = "renesas,rcar_sound-gen2", .data = &rsnd_of_data_gen2 }, { .compatible = "renesas,rcar_sound-gen3", .data = &rsnd_of_data_gen2 }, /* gen2 compatible */ {}, }; MODULE_DEVICE_TABLE(of, rsnd_of_match); /* * rsnd_platform functions */ #define rsnd_platform_call(priv, dai, func, param...) \ (!(priv->info->func) ? 0 : \ priv->info->func(param)) #define rsnd_is_enable_path(io, name) \ ((io)->info ? (io)->info->name : NULL) #define rsnd_info_id(priv, io, name) \ ((io)->info->name - priv->info->name##_info) void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type) { if (mod->type != type) { struct rsnd_priv *priv = rsnd_mod_to_priv(mod); struct device *dev = rsnd_priv_to_dev(priv); dev_warn(dev, "%s[%d] is not your expected module\n", rsnd_mod_name(mod), rsnd_mod_id(mod)); } } /* * rsnd_mod functions */ char *rsnd_mod_name(struct rsnd_mod *mod) { if (!mod || !mod->ops) return "unknown"; return mod->ops->name; } struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io, struct rsnd_mod *mod) { if (!mod || !mod->ops || !mod->ops->dma_req) return NULL; return mod->ops->dma_req(io, mod); } int rsnd_mod_init(struct rsnd_priv *priv, struct rsnd_mod *mod, struct rsnd_mod_ops *ops, struct clk *clk, enum rsnd_mod_type type, int id) { int ret = clk_prepare(clk); if (ret) return ret; mod->id = id; mod->ops = ops; mod->type = type; mod->clk = clk; mod->priv = priv; return ret; } void rsnd_mod_quit(struct rsnd_mod *mod) { if (mod->clk) clk_unprepare(mod->clk); } void rsnd_mod_interrupt(struct rsnd_mod *mod, void (*callback)(struct rsnd_mod *mod, struct rsnd_dai_stream *io)) { struct rsnd_priv *priv = rsnd_mod_to_priv(mod); struct rsnd_dai_stream *io; struct rsnd_dai *rdai; int i; for_each_rsnd_dai(rdai, priv, i) { io = &rdai->playback; if (mod == io->mod[mod->type]) callback(mod, io); io = &rdai->capture; if (mod == io->mod[mod->type]) callback(mod, io); } } int rsnd_io_is_working(struct rsnd_dai_stream *io) { /* see rsnd_dai_stream_init/quit() */ return !!io->substream; } /* * ADINR function */ u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io) { struct rsnd_priv *priv = rsnd_mod_to_priv(mod); struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); struct device *dev = rsnd_priv_to_dev(priv); u32 adinr = runtime->channels; switch (runtime->sample_bits) { case 16: adinr |= (8 << 16); break; case 32: adinr |= (0 << 16); break; default: dev_warn(dev, "not supported sample bits\n"); return 0; } return adinr; } u32 rsnd_get_adinr_chan(struct rsnd_mod *mod, struct rsnd_dai_stream *io) { struct rsnd_priv *priv = rsnd_mod_to_priv(mod); struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); struct device *dev = rsnd_priv_to_dev(priv); u32 chan = runtime->channels; switch (chan) { case 1: case 2: case 4: case 6: case 8: break; default: dev_warn(dev, "not supported channel\n"); chan = 0; break; } return chan; } /* * DALIGN function */ u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io) { struct rsnd_mod *src = rsnd_io_to_mod_src(io); struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io); struct rsnd_mod *target = src ? src : ssi; struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); u32 val = 0x76543210; u32 mask = ~0; mask <<= runtime->channels * 4; val = val & mask; switch (runtime->sample_bits) { case 16: val |= 0x67452301 & ~mask; break; case 32: val |= 0x76543210 & ~mask; break; } /* * exchange channeles on SRC if possible, * otherwise, R/L volume settings on DVC * changes inverted channels */ if (mod == target) return val; else return 0x76543210; } /* * rsnd_dai functions */ #define rsnd_mod_call(mod, io, func, param...) \ ({ \ struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \ struct device *dev = rsnd_priv_to_dev(priv); \ u32 mask = 0xF << __rsnd_mod_shift_##func; \ u8 val = (mod->status >> __rsnd_mod_shift_##func) & 0xF; \ u8 add = ((val + __rsnd_mod_add_##func) & 0xF); \ int ret = 0; \ int call = (val == __rsnd_mod_call_##func) && (mod)->ops->func; \ mod->status = (mod->status & ~mask) + \ (add << __rsnd_mod_shift_##func); \ dev_dbg(dev, "%s[%d]\t0x%08x %s\n", \ rsnd_mod_name(mod), rsnd_mod_id(mod), \ mod->status, call ? #func : ""); \ if (call) \ ret = (mod)->ops->func(mod, io, param); \ ret; \ }) #define rsnd_dai_call(fn, io, param...) \ ({ \ struct rsnd_mod *mod; \ int ret = 0, i; \ for (i = 0; i < RSND_MOD_MAX; i++) { \ mod = (io)->mod[i]; \ if (!mod) \ continue; \ ret |= rsnd_mod_call(mod, io, fn, param); \ } \ ret; \ }) static int rsnd_dai_connect(struct rsnd_mod *mod, struct rsnd_dai_stream *io) { struct rsnd_priv *priv; struct device *dev; if (!mod) return -EIO; priv = rsnd_mod_to_priv(mod); dev = rsnd_priv_to_dev(priv); io->mod[mod->type] = mod; dev_dbg(dev, "%s[%d] is connected to io (%s)\n", rsnd_mod_name(mod), rsnd_mod_id(mod), rsnd_io_is_play(io) ? "Playback" : "Capture"); return 0; } static void rsnd_dai_disconnect(struct rsnd_mod *mod, struct rsnd_dai_stream *io) { io->mod[mod->type] = NULL; } struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id) { if ((id < 0) || (id >= rsnd_rdai_nr(priv))) return NULL; return priv->rdai + id; } #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai) static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai) { struct rsnd_priv *priv = rsnd_dai_to_priv(dai); return rsnd_rdai_get(priv, dai->id); } /* * rsnd_soc_dai functions */ int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional) { struct snd_pcm_substream *substream = io->substream; struct snd_pcm_runtime *runtime = substream->runtime; int pos = io->byte_pos + additional; pos %= (runtime->periods * io->byte_per_period); return pos; } bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte) { io->byte_pos += byte; if (io->byte_pos >= io->next_period_byte) { struct snd_pcm_substream *substream = io->substream; struct snd_pcm_runtime *runtime = substream->runtime; io->period_pos++; io->next_period_byte += io->byte_per_period; if (io->period_pos >= runtime->periods) { io->byte_pos = 0; io->period_pos = 0; io->next_period_byte = io->byte_per_period; } return true; } return false; } void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io) { struct snd_pcm_substream *substream = io->substream; /* * this function should be called... * * - if rsnd_dai_pointer_update() returns true * - without spin lock */ snd_pcm_period_elapsed(substream); } static void rsnd_dai_stream_init(struct rsnd_dai_stream *io, struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; io->substream = substream; io->byte_pos = 0; io->period_pos = 0; io->byte_per_period = runtime->period_size * runtime->channels * samples_to_bytes(runtime, 1); io->next_period_byte = io->byte_per_period; } static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io) { io->substream = NULL; } static struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; return rtd->cpu_dai; } static struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai, struct snd_pcm_substream *substream) { if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) return &rdai->playback; else return &rdai->capture; } static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { struct rsnd_priv *priv = rsnd_dai_to_priv(dai); struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); int ssi_id = rsnd_mod_id(rsnd_io_to_mod_ssi(io)); int ret; unsigned long flags; spin_lock_irqsave(&priv->lock, flags); switch (cmd) { case SNDRV_PCM_TRIGGER_START: rsnd_dai_stream_init(io, substream); ret = rsnd_platform_call(priv, dai, start, ssi_id); if (ret < 0) goto dai_trigger_end; ret = rsnd_dai_call(init, io, priv); if (ret < 0) goto dai_trigger_end; ret = rsnd_dai_call(start, io, priv); if (ret < 0) goto dai_trigger_end; break; case SNDRV_PCM_TRIGGER_STOP: ret = rsnd_dai_call(stop, io, priv); ret |= rsnd_dai_call(quit, io, priv); ret |= rsnd_platform_call(priv, dai, stop, ssi_id); rsnd_dai_stream_quit(io); break; default: ret = -EINVAL; } dai_trigger_end: spin_unlock_irqrestore(&priv->lock, flags); return ret; } static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) { struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); /* set master/slave audio interface */ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBM_CFM: rdai->clk_master = 0; break; case SND_SOC_DAIFMT_CBS_CFS: rdai->clk_master = 1; /* codec is slave, cpu is master */ break; default: return -EINVAL; } /* set format */ rdai->bit_clk_inv = 0; switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: rdai->sys_delay = 0; rdai->data_alignment = 0; rdai->frm_clk_inv = 0; break; case SND_SOC_DAIFMT_LEFT_J: rdai->sys_delay = 1; rdai->data_alignment = 0; rdai->frm_clk_inv = 1; break; case SND_SOC_DAIFMT_RIGHT_J: rdai->sys_delay = 1; rdai->data_alignment = 1; rdai->frm_clk_inv = 1; break; } /* set clock inversion */ switch (fmt & SND_SOC_DAIFMT_INV_MASK) { case SND_SOC_DAIFMT_NB_IF: rdai->bit_clk_inv = rdai->bit_clk_inv; rdai->frm_clk_inv = !rdai->frm_clk_inv; break; case SND_SOC_DAIFMT_IB_NF: rdai->bit_clk_inv = !rdai->bit_clk_inv; rdai->frm_clk_inv = rdai->frm_clk_inv; break; case SND_SOC_DAIFMT_IB_IF: rdai->bit_clk_inv = !rdai->bit_clk_inv; rdai->frm_clk_inv = !rdai->frm_clk_inv; break; case SND_SOC_DAIFMT_NB_NF: default: break; } return 0; } static const struct snd_soc_dai_ops rsnd_soc_dai_ops = { .trigger = rsnd_soc_dai_trigger, .set_fmt = rsnd_soc_dai_set_fmt, }; #define rsnd_path_add(priv, io, type) \ ({ \ struct rsnd_mod *mod; \ int ret = 0; \ int id = -1; \ \ if (rsnd_is_enable_path(io, type)) { \ id = rsnd_info_id(priv, io, type); \ if (id >= 0) { \ mod = rsnd_##type##_mod_get(priv, id); \ ret = rsnd_dai_connect(mod, io); \ } \ } \ ret; \ }) #define rsnd_path_remove(priv, io, type) \ { \ struct rsnd_mod *mod; \ int id = -1; \ \ if (rsnd_is_enable_path(io, type)) { \ id = rsnd_info_id(priv, io, type); \ if (id >= 0) { \ mod = rsnd_##type##_mod_get(priv, id); \ rsnd_dai_disconnect(mod, io); \ } \ } \ } void rsnd_path_parse(struct rsnd_priv *priv, struct rsnd_dai_stream *io) { struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io); struct rsnd_mod *mix = rsnd_io_to_mod_mix(io); struct rsnd_mod *src = rsnd_io_to_mod_src(io); struct rsnd_mod *cmd; struct device *dev = rsnd_priv_to_dev(priv); u32 data; /* Gen1 is not supported */ if (rsnd_is_gen1(priv)) return; if (!mix && !dvc) return; if (mix) { struct rsnd_dai *rdai; int i; u32 path[] = { [0] = 0, [1] = 1 << 0, [2] = 0, [3] = 0, [4] = 0, [5] = 1 << 8 }; /* * it is assuming that integrater is well understanding about * data path. Here doesn't check impossible connection, * like src2 + src5 */ data = 0; for_each_rsnd_dai(rdai, priv, i) { io = &rdai->playback; if (mix == rsnd_io_to_mod_mix(io)) data |= path[rsnd_mod_id(src)]; io = &rdai->capture; if (mix == rsnd_io_to_mod_mix(io)) data |= path[rsnd_mod_id(src)]; } /* * We can't use ctu = rsnd_io_ctu() here. * Since, ID of dvc/mix are 0 or 1 (= same as CMD number) * but ctu IDs are 0 - 7 (= CTU00 - CTU13) */ cmd = mix; } else { u32 path[] = { [0] = 0x30000, [1] = 0x30001, [2] = 0x40000, [3] = 0x10000, [4] = 0x20000, [5] = 0x40100 }; data = path[rsnd_mod_id(src)]; cmd = dvc; } dev_dbg(dev, "ctu/mix path = 0x%08x", data); rsnd_mod_write(cmd, CMD_ROUTE_SLCT, data); rsnd_mod_write(cmd, CMD_CTRL, 0x10); } static int rsnd_path_init(struct rsnd_priv *priv, struct rsnd_dai *rdai, struct rsnd_dai_stream *io) { int ret; /* * Gen1 is created by SRU/SSI, and this SRU is base module of * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU) * * Easy image is.. * Gen1 SRU = Gen2 SCU + SSIU + etc * * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is * using fixed path. */ /* SSI */ ret = rsnd_path_add(priv, io, ssi); if (ret < 0) return ret; /* SRC */ ret = rsnd_path_add(priv, io, src); if (ret < 0) return ret; /* CTU */ ret = rsnd_path_add(priv, io, ctu); if (ret < 0) return ret; /* MIX */ ret = rsnd_path_add(priv, io, mix); if (ret < 0) return ret; /* DVC */ ret = rsnd_path_add(priv, io, dvc); if (ret < 0) return ret; return ret; } static void rsnd_of_parse_dai(struct platform_device *pdev, const struct rsnd_of_data *of_data, struct rsnd_priv *priv) { struct device_node *dai_node, *dai_np; struct device_node *ssi_node, *ssi_np; struct device_node *src_node, *src_np; struct device_node *ctu_node, *ctu_np; struct device_node *mix_node, *mix_np; struct device_node *dvc_node, *dvc_np; struct device_node *playback, *capture; struct rsnd_dai_platform_info *dai_info; struct rcar_snd_info *info = rsnd_priv_to_info(priv); struct device *dev = &pdev->dev; int nr, i; int dai_i, ssi_i, src_i, ctu_i, mix_i, dvc_i; if (!of_data) return; dai_node = of_get_child_by_name(dev->of_node, "rcar_sound,dai"); if (!dai_node) return; nr = of_get_child_count(dai_node); if (!nr) return; dai_info = devm_kzalloc(dev, sizeof(struct rsnd_dai_platform_info) * nr, GFP_KERNEL); if (!dai_info) { dev_err(dev, "dai info allocation error\n"); return; } info->dai_info_nr = nr; info->dai_info = dai_info; ssi_node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi"); src_node = of_get_child_by_name(dev->of_node, "rcar_sound,src"); ctu_node = of_get_child_by_name(dev->of_node, "rcar_sound,ctu"); mix_node = of_get_child_by_name(dev->of_node, "rcar_sound,mix"); dvc_node = of_get_child_by_name(dev->of_node, "rcar_sound,dvc"); #define mod_parse(name) \ if (name##_node) { \ struct rsnd_##name##_platform_info *name##_info; \ \ name##_i = 0; \ for_each_child_of_node(name##_node, name##_np) { \ name##_info = info->name##_info + name##_i; \ \ if (name##_np == playback) \ dai_info->playback.name = name##_info; \ if (name##_np == capture) \ dai_info->capture.name = name##_info; \ \ name##_i++; \ } \ } /* * parse all dai */ dai_i = 0; for_each_child_of_node(dai_node, dai_np) { dai_info = info->dai_info + dai_i; for (i = 0;; i++) { playback = of_parse_phandle(dai_np, "playback", i); capture = of_parse_phandle(dai_np, "capture", i); if (!playback && !capture) break; mod_parse(ssi); mod_parse(src); mod_parse(ctu); mod_parse(mix); mod_parse(dvc); of_node_put(playback); of_node_put(capture); } dai_i++; } } static int rsnd_dai_probe(struct platform_device *pdev, const struct rsnd_of_data *of_data, struct rsnd_priv *priv) { struct snd_soc_dai_driver *drv; struct rcar_snd_info *info = rsnd_priv_to_info(priv); struct rsnd_dai *rdai; struct rsnd_ssi_platform_info *pmod, *cmod; struct device *dev = rsnd_priv_to_dev(priv); int dai_nr; int i; rsnd_of_parse_dai(pdev, of_data, priv); dai_nr = info->dai_info_nr; if (!dai_nr) { dev_err(dev, "no dai\n"); return -EIO; } drv = devm_kzalloc(dev, sizeof(*drv) * dai_nr, GFP_KERNEL); rdai = devm_kzalloc(dev, sizeof(*rdai) * dai_nr, GFP_KERNEL); if (!drv || !rdai) { dev_err(dev, "dai allocate failed\n"); return -ENOMEM; } priv->rdai_nr = dai_nr; priv->daidrv = drv; priv->rdai = rdai; for (i = 0; i < dai_nr; i++) { pmod = info->dai_info[i].playback.ssi; cmod = info->dai_info[i].capture.ssi; /* * init rsnd_dai */ snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i); rdai[i].priv = priv; /* * init snd_soc_dai_driver */ drv[i].name = rdai[i].name; drv[i].ops = &rsnd_soc_dai_ops; if (pmod) { snprintf(rdai[i].playback.name, RSND_DAI_NAME_SIZE, "DAI%d Playback", i); drv[i].playback.rates = RSND_RATES; drv[i].playback.formats = RSND_FMTS; drv[i].playback.channels_min = 2; drv[i].playback.channels_max = 2; drv[i].playback.stream_name = rdai[i].playback.name; rdai[i].playback.info = &info->dai_info[i].playback; rdai[i].playback.rdai = rdai + i; rsnd_path_init(priv, &rdai[i], &rdai[i].playback); } if (cmod) { snprintf(rdai[i].capture.name, RSND_DAI_NAME_SIZE, "DAI%d Capture", i); drv[i].capture.rates = RSND_RATES; drv[i].capture.formats = RSND_FMTS; drv[i].capture.channels_min = 2; drv[i].capture.channels_max = 2; drv[i].capture.stream_name = rdai[i].capture.name; rdai[i].capture.info = &info->dai_info[i].capture; rdai[i].capture.rdai = rdai + i; rsnd_path_init(priv, &rdai[i], &rdai[i].capture); } dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name, pmod ? "play" : " -- ", cmod ? "capture" : " -- "); } return 0; } /* * pcm ops */ static struct snd_pcm_hardware rsnd_pcm_hardware = { .info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID, .buffer_bytes_max = 64 * 1024, .period_bytes_min = 32, .period_bytes_max = 8192, .periods_min = 1, .periods_max = 32, .fifo_size = 256, }; static int rsnd_pcm_open(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; int ret = 0; snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware); ret = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); return ret; } static int rsnd_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params) { struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); int ret; ret = rsnd_dai_call(hw_params, io, substream, hw_params); if (ret) return ret; return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); } static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); return bytes_to_frames(runtime, io->byte_pos); } static struct snd_pcm_ops rsnd_pcm_ops = { .open = rsnd_pcm_open, .ioctl = snd_pcm_lib_ioctl, .hw_params = rsnd_hw_params, .hw_free = snd_pcm_lib_free_pages, .pointer = rsnd_pointer, }; /* * snd_kcontrol */ #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value) static int rsnd_kctrl_info(struct snd_kcontrol *kctrl, struct snd_ctl_elem_info *uinfo) { struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); if (cfg->texts) { uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; uinfo->count = cfg->size; uinfo->value.enumerated.items = cfg->max; if (uinfo->value.enumerated.item >= cfg->max) uinfo->value.enumerated.item = cfg->max - 1; strlcpy(uinfo->value.enumerated.name, cfg->texts[uinfo->value.enumerated.item], sizeof(uinfo->value.enumerated.name)); } else { uinfo->count = cfg->size; uinfo->value.integer.min = 0; uinfo->value.integer.max = cfg->max; uinfo->type = (cfg->max == 1) ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; } return 0; } static int rsnd_kctrl_get(struct snd_kcontrol *kctrl, struct snd_ctl_elem_value *uc) { struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); int i; for (i = 0; i < cfg->size; i++) if (cfg->texts) uc->value.enumerated.item[i] = cfg->val[i]; else uc->value.integer.value[i] = cfg->val[i]; return 0; } static int rsnd_kctrl_put(struct snd_kcontrol *kctrl, struct snd_ctl_elem_value *uc) { struct rsnd_mod *mod = snd_kcontrol_chip(kctrl); struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); int i, change = 0; for (i = 0; i < cfg->size; i++) { if (cfg->texts) { change |= (uc->value.enumerated.item[i] != cfg->val[i]); cfg->val[i] = uc->value.enumerated.item[i]; } else { change |= (uc->value.integer.value[i] != cfg->val[i]); cfg->val[i] = uc->value.integer.value[i]; } } if (change && cfg->update) cfg->update(cfg->io, mod); return change; } static int __rsnd_kctrl_new(struct rsnd_mod *mod, struct rsnd_dai_stream *io, struct snd_soc_pcm_runtime *rtd, const unsigned char *name, struct rsnd_kctrl_cfg *cfg, void (*update)(struct rsnd_dai_stream *io, struct rsnd_mod *mod)) { struct snd_soc_card *soc_card = rtd->card; struct snd_card *card = rtd->card->snd_card; struct snd_kcontrol *kctrl; struct snd_kcontrol_new knew = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = name, .info = rsnd_kctrl_info, .index = rtd - soc_card->rtd, .get = rsnd_kctrl_get, .put = rsnd_kctrl_put, .private_value = (unsigned long)cfg, }; int ret; kctrl = snd_ctl_new1(&knew, mod); if (!kctrl) return -ENOMEM; ret = snd_ctl_add(card, kctrl); if (ret < 0) return ret; cfg->update = update; cfg->card = card; cfg->kctrl = kctrl; cfg->io = io; return 0; } void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg) { snd_ctl_remove(cfg->card, cfg->kctrl); } int rsnd_kctrl_new_m(struct rsnd_mod *mod, struct rsnd_dai_stream *io, struct snd_soc_pcm_runtime *rtd, const unsigned char *name, void (*update)(struct rsnd_dai_stream *io, struct rsnd_mod *mod), struct rsnd_kctrl_cfg_m *_cfg, u32 max) { _cfg->cfg.max = max; _cfg->cfg.size = RSND_DVC_CHANNELS; _cfg->cfg.val = _cfg->val; return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); } int rsnd_kctrl_new_s(struct rsnd_mod *mod, struct rsnd_dai_stream *io, struct snd_soc_pcm_runtime *rtd, const unsigned char *name, void (*update)(struct rsnd_dai_stream *io, struct rsnd_mod *mod), struct rsnd_kctrl_cfg_s *_cfg, u32 max) { _cfg->cfg.max = max; _cfg->cfg.size = 1; _cfg->cfg.val = &_cfg->val; return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); } int rsnd_kctrl_new_e(struct rsnd_mod *mod, struct rsnd_dai_stream *io, struct snd_soc_pcm_runtime *rtd, const unsigned char *name, struct rsnd_kctrl_cfg_s *_cfg, void (*update)(struct rsnd_dai_stream *io, struct rsnd_mod *mod), const char * const *texts, u32 max) { _cfg->cfg.max = max; _cfg->cfg.size = 1; _cfg->cfg.val = &_cfg->val; _cfg->cfg.texts = texts; return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); } /* * snd_soc_platform */ #define PREALLOC_BUFFER (32 * 1024) #define PREALLOC_BUFFER_MAX (32 * 1024) static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_dai *dai = rtd->cpu_dai; struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); int ret; ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd); if (ret) return ret; ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd); if (ret) return ret; return snd_pcm_lib_preallocate_pages_for_all( rtd->pcm, SNDRV_DMA_TYPE_DEV, rtd->card->snd_card->dev, PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); } static struct snd_soc_platform_driver rsnd_soc_platform = { .ops = &rsnd_pcm_ops, .pcm_new = rsnd_pcm_new, }; static const struct snd_soc_component_driver rsnd_soc_component = { .name = "rsnd", }; static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv, struct rsnd_dai_stream *io) { int ret; ret = rsnd_dai_call(probe, io, priv); if (ret == -EAGAIN) { /* * Fallback to PIO mode */ /* * call "remove" for SSI/SRC/DVC * SSI will be switch to PIO mode if it was DMA mode * see * rsnd_dma_init() * rsnd_ssi_fallback() */ rsnd_dai_call(remove, io, priv); /* * remove SRC/DVC from DAI, */ rsnd_path_remove(priv, io, src); rsnd_path_remove(priv, io, dvc); /* * fallback */ rsnd_dai_call(fallback, io, priv); /* * retry to "probe". * DAI has SSI which is PIO mode only now. */ ret = rsnd_dai_call(probe, io, priv); } return ret; } /* * rsnd probe */ static int rsnd_probe(struct platform_device *pdev) { struct rcar_snd_info *info; struct rsnd_priv *priv; struct device *dev = &pdev->dev; struct rsnd_dai *rdai; const struct of_device_id *of_id = of_match_device(rsnd_of_match, dev); const struct rsnd_of_data *of_data; int (*probe_func[])(struct platform_device *pdev, const struct rsnd_of_data *of_data, struct rsnd_priv *priv) = { rsnd_gen_probe, rsnd_dma_probe, rsnd_ssi_probe, rsnd_src_probe, rsnd_ctu_probe, rsnd_mix_probe, rsnd_dvc_probe, rsnd_adg_probe, rsnd_dai_probe, }; int ret, i; info = devm_kzalloc(&pdev->dev, sizeof(struct rcar_snd_info), GFP_KERNEL); if (!info) return -ENOMEM; of_data = of_id->data; /* * init priv data */ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) { dev_err(dev, "priv allocate failed\n"); return -ENODEV; } priv->pdev = pdev; priv->info = info; spin_lock_init(&priv->lock); /* * init each module */ for (i = 0; i < ARRAY_SIZE(probe_func); i++) { ret = probe_func[i](pdev, of_data, priv); if (ret) return ret; } for_each_rsnd_dai(rdai, priv, i) { ret = rsnd_rdai_continuance_probe(priv, &rdai->playback); if (ret) goto exit_snd_probe; ret = rsnd_rdai_continuance_probe(priv, &rdai->capture); if (ret) goto exit_snd_probe; } dev_set_drvdata(dev, priv); /* * asoc register */ ret = snd_soc_register_platform(dev, &rsnd_soc_platform); if (ret < 0) { dev_err(dev, "cannot snd soc register\n"); return ret; } ret = snd_soc_register_component(dev, &rsnd_soc_component, priv->daidrv, rsnd_rdai_nr(priv)); if (ret < 0) { dev_err(dev, "cannot snd dai register\n"); goto exit_snd_soc; } pm_runtime_enable(dev); dev_info(dev, "probed\n"); return ret; exit_snd_soc: snd_soc_unregister_platform(dev); exit_snd_probe: for_each_rsnd_dai(rdai, priv, i) { rsnd_dai_call(remove, &rdai->playback, priv); rsnd_dai_call(remove, &rdai->capture, priv); } return ret; } static int rsnd_remove(struct platform_device *pdev) { struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); struct rsnd_dai *rdai; void (*remove_func[])(struct platform_device *pdev, struct rsnd_priv *priv) = { rsnd_ssi_remove, rsnd_src_remove, rsnd_ctu_remove, rsnd_mix_remove, rsnd_dvc_remove, }; int ret = 0, i; pm_runtime_disable(&pdev->dev); for_each_rsnd_dai(rdai, priv, i) { ret |= rsnd_dai_call(remove, &rdai->playback, priv); ret |= rsnd_dai_call(remove, &rdai->capture, priv); } for (i = 0; i < ARRAY_SIZE(remove_func); i++) remove_func[i](pdev, priv); snd_soc_unregister_component(&pdev->dev); snd_soc_unregister_platform(&pdev->dev); return ret; } static struct platform_driver rsnd_driver = { .driver = { .name = "rcar_sound", .of_match_table = rsnd_of_match, }, .probe = rsnd_probe, .remove = rsnd_remove, }; module_platform_driver(rsnd_driver); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Renesas R-Car audio driver"); MODULE_AUTHOR("Kuninori Morimoto "); MODULE_ALIAS("platform:rcar-pcm-audio");