diff options
Diffstat (limited to 'kernel/sound/soc/sh/rcar/core.c')
| -rw-r--r-- | kernel/sound/soc/sh/rcar/core.c | 1135 |
1 files changed, 1135 insertions, 0 deletions
diff --git a/kernel/sound/soc/sh/rcar/core.c b/kernel/sound/soc/sh/rcar/core.c new file mode 100644 index 000000000..9f48d75fa --- /dev/null +++ b/kernel/sound/soc/sh/rcar/core.c @@ -0,0 +1,1135 @@ +/* + * 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 "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 }, + {}, +}; +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; +} + +struct dma_chan *rsnd_mod_dma_req(struct rsnd_mod *mod) +{ + if (!mod || !mod->ops || !mod->ops->dma_req) + return NULL; + + return mod->ops->dma_req(mod); +} + +int rsnd_mod_init(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; + + return ret; +} + +void rsnd_mod_quit(struct rsnd_mod *mod) +{ + if (mod->clk) + clk_unprepare(mod->clk); +} + +/* + * 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, param...) \ +({ \ + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \ + struct device *dev = rsnd_priv_to_dev(priv); \ + u32 mask = (1 << __rsnd_mod_shift_##func) & ~(1 << 31); \ + u32 call = __rsnd_mod_call_##func << __rsnd_mod_shift_##func; \ + int ret = 0; \ + if ((mod->status & mask) == call) { \ + dev_dbg(dev, "%s[%d] %s\n", \ + rsnd_mod_name(mod), rsnd_mod_id(mod), #func); \ + ret = (mod)->ops->func(mod, param); \ + mod->status = (mod->status & ~mask) | (~call & mask); \ + } \ + ret; \ +}) + +#define rsnd_mod_call(mod, func, param...) \ + (!(mod) ? -ENODEV : \ + !((mod)->ops->func) ? 0 : \ + __rsnd_mod_call(mod, func, param)) + +#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, fn, param); \ + 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; +} + +static void rsnd_dai_disconnect(struct rsnd_mod *mod, + struct rsnd_dai_stream *io) +{ + mod->io = NULL; + 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; +} + +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_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; +} + +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, 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); + if (ret < 0) + goto dai_trigger_end; + + ret = rsnd_dai_call(quit, io, priv); + 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 format */ + 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_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; \ +}) + +#define rsnd_path_break(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); \ + } \ + } \ +} + +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 *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, 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"); + 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(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(mod); + + return change; +} + +static int __rsnd_kctrl_new(struct rsnd_mod *mod, + struct snd_soc_pcm_runtime *rtd, + const unsigned char *name, + struct rsnd_kctrl_cfg *cfg, + void (*update)(struct rsnd_mod *mod)) +{ + 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, + .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) { + snd_ctl_free_one(kctrl); + return ret; + } + + cfg->update = update; + cfg->card = card; + cfg->kctrl = kctrl; + + 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 snd_soc_pcm_runtime *rtd, + const unsigned char *name, + void (*update)(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, rtd, name, &_cfg->cfg, update); +} + +int rsnd_kctrl_new_s(struct rsnd_mod *mod, + struct snd_soc_pcm_runtime *rtd, + const unsigned char *name, + void (*update)(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, rtd, name, &_cfg->cfg, update); +} + +int rsnd_kctrl_new_e(struct rsnd_mod *mod, + struct snd_soc_pcm_runtime *rtd, + const unsigned char *name, + struct rsnd_kctrl_cfg_s *_cfg, + void (*update)(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, 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_break(priv, io, src); + rsnd_path_break(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_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_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_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 <kuninori.morimoto.gx@renesas.com>"); +MODULE_ALIAS("platform:rcar-pcm-audio"); |