| /* |
| * Renesas R-Car SRU/SCU/SSIU/SSI support |
| * |
| * Copyright (C) 2013 Renesas Solutions Corp. |
| * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> |
| * |
| * Based on fsi.c |
| * Kuninori Morimoto <morimoto.kuninori@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. |
| */ |
| |
| /* |
| * 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 <linux/pm_runtime.h> |
| #include <linux/shdma-base.h> |
| #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 struct rsnd_of_data rsnd_of_data_gen1 = { |
| .flags = RSND_GEN1, |
| }; |
| |
| static struct rsnd_of_data rsnd_of_data_gen2 = { |
| .flags = RSND_GEN2, |
| }; |
| |
| static 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 }, |
| {}, |
| }; |
| 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) |
| |
| /* |
| * rsnd_mod functions |
| */ |
| char *rsnd_mod_name(struct rsnd_mod *mod) |
| { |
| if (!mod || !mod->ops) |
| return "unknown"; |
| |
| return mod->ops->name; |
| } |
| |
| void rsnd_mod_init(struct rsnd_priv *priv, |
| struct rsnd_mod *mod, |
| struct rsnd_mod_ops *ops, |
| enum rsnd_mod_type type, |
| int id) |
| { |
| mod->priv = priv; |
| mod->id = id; |
| mod->ops = ops; |
| mod->type = type; |
| } |
| |
| /* |
| * rsnd_dma functions |
| */ |
| static void __rsnd_dma_start(struct rsnd_dma *dma); |
| static void rsnd_dma_continue(struct rsnd_dma *dma) |
| { |
| /* push next A or B plane */ |
| dma->submit_loop = 1; |
| schedule_work(&dma->work); |
| } |
| |
| void rsnd_dma_start(struct rsnd_dma *dma) |
| { |
| /* push both A and B plane*/ |
| dma->offset = 0; |
| dma->submit_loop = 2; |
| __rsnd_dma_start(dma); |
| } |
| |
| void rsnd_dma_stop(struct rsnd_dma *dma) |
| { |
| dma->submit_loop = 0; |
| cancel_work_sync(&dma->work); |
| dmaengine_terminate_all(dma->chan); |
| } |
| |
| static void rsnd_dma_complete(void *data) |
| { |
| struct rsnd_dma *dma = (struct rsnd_dma *)data; |
| struct rsnd_mod *mod = rsnd_dma_to_mod(dma); |
| struct rsnd_priv *priv = rsnd_mod_to_priv(rsnd_dma_to_mod(dma)); |
| struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); |
| unsigned long flags; |
| |
| rsnd_lock(priv, flags); |
| |
| /* |
| * Renesas sound Gen1 needs 1 DMAC, |
| * Gen2 needs 2 DMAC. |
| * In Gen2 case, it are Audio-DMAC, and Audio-DMAC-peri-peri. |
| * But, Audio-DMAC-peri-peri doesn't have interrupt, |
| * and this driver is assuming that here. |
| * |
| * If Audio-DMAC-peri-peri has interrpt, |
| * rsnd_dai_pointer_update() will be called twice, |
| * ant it will breaks io->byte_pos |
| */ |
| if (dma->submit_loop) |
| rsnd_dma_continue(dma); |
| |
| rsnd_unlock(priv, flags); |
| |
| rsnd_dai_pointer_update(io, io->byte_per_period); |
| } |
| |
| static void __rsnd_dma_start(struct rsnd_dma *dma) |
| { |
| struct rsnd_mod *mod = rsnd_dma_to_mod(dma); |
| struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
| struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); |
| struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); |
| struct device *dev = rsnd_priv_to_dev(priv); |
| struct dma_async_tx_descriptor *desc; |
| dma_addr_t buf; |
| size_t len = io->byte_per_period; |
| int i; |
| |
| for (i = 0; i < dma->submit_loop; i++) { |
| |
| buf = runtime->dma_addr + |
| rsnd_dai_pointer_offset(io, dma->offset + len); |
| dma->offset = len; |
| |
| desc = dmaengine_prep_slave_single( |
| dma->chan, buf, len, dma->dir, |
| DMA_PREP_INTERRUPT | DMA_CTRL_ACK); |
| if (!desc) { |
| dev_err(dev, "dmaengine_prep_slave_sg() fail\n"); |
| return; |
| } |
| |
| desc->callback = rsnd_dma_complete; |
| desc->callback_param = dma; |
| |
| if (dmaengine_submit(desc) < 0) { |
| dev_err(dev, "dmaengine_submit() fail\n"); |
| return; |
| } |
| |
| dma_async_issue_pending(dma->chan); |
| } |
| } |
| |
| static void rsnd_dma_do_work(struct work_struct *work) |
| { |
| struct rsnd_dma *dma = container_of(work, struct rsnd_dma, work); |
| |
| __rsnd_dma_start(dma); |
| } |
| |
| int rsnd_dma_available(struct rsnd_dma *dma) |
| { |
| return !!dma->chan; |
| } |
| |
| #define DMA_NAME_SIZE 16 |
| #define MOD_MAX 4 /* MEM/SSI/SRC/DVC */ |
| static int _rsnd_dma_of_name(char *dma_name, struct rsnd_mod *mod) |
| { |
| if (mod) |
| return snprintf(dma_name, DMA_NAME_SIZE / 2, "%s%d", |
| rsnd_mod_name(mod), rsnd_mod_id(mod)); |
| else |
| return snprintf(dma_name, DMA_NAME_SIZE / 2, "mem"); |
| |
| } |
| |
| static void rsnd_dma_of_name(struct rsnd_dma *dma, |
| int is_play, char *dma_name) |
| { |
| struct rsnd_mod *this = rsnd_dma_to_mod(dma); |
| struct rsnd_dai_stream *io = rsnd_mod_to_io(this); |
| struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io); |
| struct rsnd_mod *src = rsnd_io_to_mod_src(io); |
| struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io); |
| struct rsnd_mod *mod[MOD_MAX]; |
| struct rsnd_mod *src_mod, *dst_mod; |
| int i, index; |
| |
| |
| for (i = 0; i < MOD_MAX; i++) |
| mod[i] = NULL; |
| |
| /* |
| * in play case... |
| * |
| * src -> dst |
| * |
| * mem -> SSI |
| * mem -> SRC -> SSI |
| * mem -> SRC -> DVC -> SSI |
| */ |
| mod[0] = NULL; /* for "mem" */ |
| index = 1; |
| for (i = 1; i < MOD_MAX; i++) { |
| if (!src) { |
| mod[i] = ssi; |
| } else if (!dvc) { |
| mod[i] = src; |
| src = NULL; |
| } else { |
| mod[i] = dvc; |
| dvc = NULL; |
| } |
| |
| if (mod[i] == this) |
| index = i; |
| |
| if (mod[i] == ssi) |
| break; |
| } |
| |
| if (is_play) { |
| src_mod = mod[index - 1]; |
| dst_mod = mod[index]; |
| } else { |
| src_mod = mod[index]; |
| dst_mod = mod[index - 1]; |
| } |
| |
| index = 0; |
| index = _rsnd_dma_of_name(dma_name + index, src_mod); |
| *(dma_name + index++) = '_'; |
| index = _rsnd_dma_of_name(dma_name + index, dst_mod); |
| } |
| |
| int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, |
| int is_play, int id) |
| { |
| struct device *dev = rsnd_priv_to_dev(priv); |
| struct dma_slave_config cfg; |
| char dma_name[DMA_NAME_SIZE]; |
| dma_cap_mask_t mask; |
| int ret; |
| |
| if (dma->chan) { |
| dev_err(dev, "it already has dma channel\n"); |
| return -EIO; |
| } |
| |
| dma_cap_zero(mask); |
| dma_cap_set(DMA_SLAVE, mask); |
| |
| if (dev->of_node) |
| rsnd_dma_of_name(dma, is_play, dma_name); |
| else |
| snprintf(dma_name, DMA_NAME_SIZE, |
| is_play ? "tx" : "rx"); |
| |
| dev_dbg(dev, "dma name : %s\n", dma_name); |
| |
| dma->chan = dma_request_slave_channel_compat(mask, shdma_chan_filter, |
| (void *)id, dev, |
| dma_name); |
| if (!dma->chan) { |
| dev_err(dev, "can't get dma channel\n"); |
| return -EIO; |
| } |
| |
| rsnd_gen_dma_addr(priv, dma, &cfg, is_play, id); |
| |
| ret = dmaengine_slave_config(dma->chan, &cfg); |
| if (ret < 0) |
| goto rsnd_dma_init_err; |
| |
| dma->dir = is_play ? DMA_TO_DEVICE : DMA_FROM_DEVICE; |
| INIT_WORK(&dma->work, rsnd_dma_do_work); |
| |
| return 0; |
| |
| rsnd_dma_init_err: |
| rsnd_dma_quit(priv, dma); |
| |
| return ret; |
| } |
| |
| void rsnd_dma_quit(struct rsnd_priv *priv, |
| struct rsnd_dma *dma) |
| { |
| if (dma->chan) |
| dma_release_channel(dma->chan); |
| |
| dma->chan = NULL; |
| } |
| |
| /* |
| * settting function |
| */ |
| u32 rsnd_get_adinr(struct rsnd_mod *mod) |
| { |
| struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
| struct rsnd_dai_stream *io = rsnd_mod_to_io(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; |
| } |
| |
| /* |
| * rsnd_dai functions |
| */ |
| #define __rsnd_mod_call(mod, func, rdai...) \ |
| ({ \ |
| struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \ |
| struct device *dev = rsnd_priv_to_dev(priv); \ |
| dev_dbg(dev, "%s [%d] %s\n", \ |
| rsnd_mod_name(mod), rsnd_mod_id(mod), #func); \ |
| (mod)->ops->func(mod, rdai); \ |
| }) |
| |
| #define rsnd_mod_call(mod, func, rdai...) \ |
| (!(mod) ? -ENODEV : \ |
| !((mod)->ops->func) ? 0 : \ |
| __rsnd_mod_call(mod, func, rdai)) |
| |
| #define rsnd_dai_call(fn, io, rdai...) \ |
| ({ \ |
| 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, fn, rdai); \ |
| if (ret < 0) \ |
| break; \ |
| } \ |
| ret; \ |
| }) |
| |
| static int rsnd_dai_connect(struct rsnd_mod *mod, |
| struct rsnd_dai_stream *io) |
| { |
| if (!mod) |
| return -EIO; |
| |
| if (io->mod[mod->type]) { |
| struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
| struct device *dev = rsnd_priv_to_dev(priv); |
| |
| dev_err(dev, "%s%d is not empty\n", |
| rsnd_mod_name(mod), |
| rsnd_mod_id(mod)); |
| return -EIO; |
| } |
| |
| io->mod[mod->type] = mod; |
| mod->io = io; |
| |
| return 0; |
| } |
| |
| int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai) |
| { |
| int id = rdai - priv->rdai; |
| |
| if ((id < 0) || (id >= rsnd_rdai_nr(priv))) |
| return -EINVAL; |
| |
| return id; |
| } |
| |
| struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id) |
| { |
| if ((id < 0) || (id >= rsnd_rdai_nr(priv))) |
| return NULL; |
| |
| return priv->rdai + id; |
| } |
| |
| static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai) |
| { |
| struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai); |
| |
| return rsnd_dai_get(priv, dai->id); |
| } |
| |
| int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io) |
| { |
| return &rdai->playback == io; |
| } |
| |
| /* |
| * 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; |
| } |
| |
| void 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; |
| } |
| |
| snd_pcm_period_elapsed(substream); |
| } |
| } |
| |
| static int 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; |
| |
| return 0; |
| } |
| |
| 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 = snd_soc_dai_get_drvdata(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; |
| |
| rsnd_lock(priv, flags); |
| |
| switch (cmd) { |
| case SNDRV_PCM_TRIGGER_START: |
| ret = rsnd_dai_stream_init(io, substream); |
| if (ret < 0) |
| goto dai_trigger_end; |
| |
| ret = rsnd_platform_call(priv, dai, start, ssi_id); |
| if (ret < 0) |
| goto dai_trigger_end; |
| |
| ret = rsnd_dai_call(init, io, rdai); |
| if (ret < 0) |
| goto dai_trigger_end; |
| |
| ret = rsnd_dai_call(start, io, rdai); |
| if (ret < 0) |
| goto dai_trigger_end; |
| break; |
| case SNDRV_PCM_TRIGGER_STOP: |
| ret = rsnd_dai_call(stop, io, rdai); |
| if (ret < 0) |
| goto dai_trigger_end; |
| |
| ret = rsnd_dai_call(quit, io, rdai); |
| if (ret < 0) |
| goto dai_trigger_end; |
| |
| ret = rsnd_platform_call(priv, dai, stop, ssi_id); |
| if (ret < 0) |
| goto dai_trigger_end; |
| break; |
| default: |
| ret = -EINVAL; |
| } |
| |
| dai_trigger_end: |
| rsnd_unlock(priv, 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 clock inversion */ |
| switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| case SND_SOC_DAIFMT_NB_IF: |
| rdai->bit_clk_inv = 0; |
| rdai->frm_clk_inv = 1; |
| break; |
| case SND_SOC_DAIFMT_IB_NF: |
| rdai->bit_clk_inv = 1; |
| rdai->frm_clk_inv = 0; |
| break; |
| case SND_SOC_DAIFMT_IB_IF: |
| rdai->bit_clk_inv = 1; |
| rdai->frm_clk_inv = 1; |
| break; |
| case SND_SOC_DAIFMT_NB_NF: |
| default: |
| rdai->bit_clk_inv = 0; |
| rdai->frm_clk_inv = 0; |
| break; |
| } |
| |
| /* set format */ |
| switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| case SND_SOC_DAIFMT_I2S: |
| rdai->sys_delay = 0; |
| rdai->data_alignment = 0; |
| break; |
| case SND_SOC_DAIFMT_LEFT_J: |
| rdai->sys_delay = 1; |
| rdai->data_alignment = 0; |
| break; |
| case SND_SOC_DAIFMT_RIGHT_J: |
| rdai->sys_delay = 1; |
| rdai->data_alignment = 1; |
| 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_parse(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; \ |
| }) |
| |
| 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. |
| */ |
| |
| /* SRC */ |
| ret = rsnd_path_parse(priv, io, src); |
| if (ret < 0) |
| return ret; |
| |
| /* SSI */ |
| ret = rsnd_path_parse(priv, io, ssi); |
| if (ret < 0) |
| return ret; |
| |
| /* DVC */ |
| ret = rsnd_path_parse(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 *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; |
| |
| 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"); |
| |
| #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); |
| |
| if (playback) |
| of_node_put(playback); |
| if (capture) |
| 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++) { |
| rdai[i].info = &info->dai_info[i]; |
| |
| pmod = rdai[i].info->playback.ssi; |
| cmod = rdai[i].info->capture.ssi; |
| |
| /* |
| * init rsnd_dai |
| */ |
| snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i); |
| |
| /* |
| * init snd_soc_dai_driver |
| */ |
| drv[i].name = rdai[i].name; |
| drv[i].ops = &rsnd_soc_dai_ops; |
| if (pmod) { |
| drv[i].playback.rates = RSND_RATES; |
| drv[i].playback.formats = RSND_FMTS; |
| drv[i].playback.channels_min = 2; |
| drv[i].playback.channels_max = 2; |
| |
| rdai[i].playback.info = &info->dai_info[i].playback; |
| rsnd_path_init(priv, &rdai[i], &rdai[i].playback); |
| } |
| if (cmod) { |
| drv[i].capture.rates = RSND_RATES; |
| drv[i].capture.formats = RSND_FMTS; |
| drv[i].capture.channels_min = 2; |
| drv[i].capture.channels_max = 2; |
| |
| rdai[i].capture.info = &info->dai_info[i].capture; |
| 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 | |
| SNDRV_PCM_INFO_PAUSE, |
| .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) |
| { |
| 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_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 rsnd_priv *priv = snd_soc_dai_get_drvdata(rtd->cpu_dai); |
| struct rsnd_dai *rdai; |
| int i, ret; |
| |
| for_each_rsnd_dai(rdai, priv, i) { |
| ret = rsnd_dai_call(pcm_new, &rdai->playback, rdai, rtd); |
| if (ret) |
| return ret; |
| |
| ret = rsnd_dai_call(pcm_new, &rdai->capture, rdai, 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 void rsnd_pcm_free(struct snd_pcm *pcm) |
| { |
| snd_pcm_lib_preallocate_free_for_all(pcm); |
| } |
| |
| static struct snd_soc_platform_driver rsnd_soc_platform = { |
| .ops = &rsnd_pcm_ops, |
| .pcm_new = rsnd_pcm_new, |
| .pcm_free = rsnd_pcm_free, |
| }; |
| |
| static const struct snd_soc_component_driver rsnd_soc_component = { |
| .name = "rsnd", |
| }; |
| |
| /* |
| * 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_ssi_probe, |
| rsnd_src_probe, |
| rsnd_dvc_probe, |
| rsnd_adg_probe, |
| rsnd_dai_probe, |
| }; |
| int ret, i; |
| |
| info = NULL; |
| of_data = NULL; |
| if (of_id) { |
| info = devm_kzalloc(&pdev->dev, |
| sizeof(struct rcar_snd_info), GFP_KERNEL); |
| of_data = of_id->data; |
| } else { |
| info = pdev->dev.platform_data; |
| } |
| |
| if (!info) { |
| dev_err(dev, "driver needs R-Car sound information\n"); |
| return -ENODEV; |
| } |
| |
| /* |
| * 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_dai_call(probe, &rdai->playback, rdai); |
| if (ret) |
| return ret; |
| |
| ret = rsnd_dai_call(probe, &rdai->capture, rdai); |
| if (ret) |
| return ret; |
| } |
| |
| /* |
| * 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; |
| } |
| |
| dev_set_drvdata(dev, priv); |
| |
| pm_runtime_enable(dev); |
| |
| dev_info(dev, "probed\n"); |
| return ret; |
| |
| exit_snd_soc: |
| snd_soc_unregister_platform(dev); |
| |
| return ret; |
| } |
| |
| static int rsnd_remove(struct platform_device *pdev) |
| { |
| struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); |
| struct rsnd_dai *rdai; |
| int ret, i; |
| |
| pm_runtime_disable(&pdev->dev); |
| |
| for_each_rsnd_dai(rdai, priv, i) { |
| ret = rsnd_dai_call(remove, &rdai->playback, rdai); |
| if (ret) |
| return ret; |
| |
| ret = rsnd_dai_call(remove, &rdai->capture, rdai); |
| if (ret) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| 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 <kuninori.morimoto.gx@renesas.com>"); |
| MODULE_ALIAS("platform:rcar-pcm-audio"); |