diff options
Diffstat (limited to 'sound/soc/sh/rcar/core.c')
| -rw-r--r-- | sound/soc/sh/rcar/core.c | 2114 |
1 files changed, 2114 insertions, 0 deletions
diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c new file mode 100644 index 000000000..1bd7114c4 --- /dev/null +++ b/sound/soc/sh/rcar/core.c @@ -0,0 +1,2114 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// 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> + +/* + * 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_192000 +#define RSND_FMTS (SNDRV_PCM_FMTBIT_S8 |\ + SNDRV_PCM_FMTBIT_S16_LE |\ + SNDRV_PCM_FMTBIT_S24_LE) + +static const struct of_device_id rsnd_of_match[] = { + { .compatible = "renesas,rcar_sound-gen1", .data = (void *)RSND_GEN1 }, + { .compatible = "renesas,rcar_sound-gen2", .data = (void *)RSND_GEN2 }, + { .compatible = "renesas,rcar_sound-gen3", .data = (void *)RSND_GEN3 }, + { .compatible = "renesas,rcar_sound-gen4", .data = (void *)RSND_GEN4 }, + /* Special Handling */ + { .compatible = "renesas,rcar_sound-r8a77990", .data = (void *)(RSND_GEN3 | RSND_SOC_E) }, + {}, +}; +MODULE_DEVICE_TABLE(of, rsnd_of_match); + +/* + * rsnd_mod functions + */ +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 is not your expected module\n", + rsnd_mod_name(mod)); + } +} + +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); +} + +#define MOD_NAME_NUM 5 +#define MOD_NAME_SIZE 16 +char *rsnd_mod_name(struct rsnd_mod *mod) +{ + static char names[MOD_NAME_NUM][MOD_NAME_SIZE]; + static int num; + char *name = names[num]; + + num++; + if (num >= MOD_NAME_NUM) + num = 0; + + /* + * Let's use same char to avoid pointlessness memory + * Thus, rsnd_mod_name() should be used immediately + * Don't keep pointer + */ + if ((mod)->ops->id_sub) { + snprintf(name, MOD_NAME_SIZE, "%s[%d%d]", + mod->ops->name, + rsnd_mod_id(mod), + rsnd_mod_id_sub(mod)); + } else { + snprintf(name, MOD_NAME_SIZE, "%s[%d]", + mod->ops->name, + rsnd_mod_id(mod)); + } + + return name; +} + +u32 *rsnd_mod_get_status(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + enum rsnd_mod_type type) +{ + return &mod->status; +} + +int rsnd_mod_id_raw(struct rsnd_mod *mod) +{ + return mod->id; +} + +int rsnd_mod_id(struct rsnd_mod *mod) +{ + if ((mod)->ops->id) + return (mod)->ops->id(mod); + + return rsnd_mod_id_raw(mod); +} + +int rsnd_mod_id_sub(struct rsnd_mod *mod) +{ + if ((mod)->ops->id_sub) + return (mod)->ops->id_sub(mod); + + return 0; +} + +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 0; +} + +void rsnd_mod_quit(struct rsnd_mod *mod) +{ + clk_unprepare(mod->clk); + mod->clk = NULL; +} + +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 *rdai; + int i; + + for_each_rsnd_dai(rdai, priv, i) { + struct rsnd_dai_stream *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() */ + if (io->substream) + return snd_pcm_running(io->substream); + + return 0; +} + +int rsnd_runtime_channel_original_with_params(struct rsnd_dai_stream *io, + struct snd_pcm_hw_params *params) +{ + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); + + /* + * params will be added when refine + * see + * __rsnd_soc_hw_rule_rate() + * __rsnd_soc_hw_rule_channels() + */ + if (params) + return params_channels(params); + else if (runtime) + return runtime->channels; + return 0; +} + +int rsnd_runtime_channel_after_ctu_with_params(struct rsnd_dai_stream *io, + struct snd_pcm_hw_params *params) +{ + int chan = rsnd_runtime_channel_original_with_params(io, params); + struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io); + + if (ctu_mod) { + u32 converted_chan = rsnd_io_converted_chan(io); + + /* + * !! Note !! + * + * converted_chan will be used for CTU, + * or TDM Split mode. + * User shouldn't use CTU with TDM Split mode. + */ + if (rsnd_runtime_is_tdm_split(io)) { + struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io)); + + dev_err(dev, "CTU and TDM Split should be used\n"); + } + + if (converted_chan) + return converted_chan; + } + + return chan; +} + +int rsnd_channel_normalization(int chan) +{ + if (WARN_ON((chan > 8) || (chan < 0))) + return 0; + + /* TDM Extend Mode needs 8ch */ + if (chan == 6) + chan = 8; + + return chan; +} + +int rsnd_runtime_channel_for_ssi_with_params(struct rsnd_dai_stream *io, + struct snd_pcm_hw_params *params) +{ + struct rsnd_dai *rdai = rsnd_io_to_rdai(io); + int chan = rsnd_io_is_play(io) ? + rsnd_runtime_channel_after_ctu_with_params(io, params) : + rsnd_runtime_channel_original_with_params(io, params); + + /* Use Multi SSI */ + if (rsnd_runtime_is_multi_ssi(io)) + chan /= rsnd_rdai_ssi_lane_get(rdai); + + return rsnd_channel_normalization(chan); +} + +int rsnd_runtime_is_multi_ssi(struct rsnd_dai_stream *io) +{ + struct rsnd_dai *rdai = rsnd_io_to_rdai(io); + int lane = rsnd_rdai_ssi_lane_get(rdai); + int chan = rsnd_io_is_play(io) ? + rsnd_runtime_channel_after_ctu(io) : + rsnd_runtime_channel_original(io); + + return (chan > 2) && (lane > 1); +} + +int rsnd_runtime_is_tdm(struct rsnd_dai_stream *io) +{ + return rsnd_runtime_channel_for_ssi(io) >= 6; +} + +int rsnd_runtime_is_tdm_split(struct rsnd_dai_stream *io) +{ + return !!rsnd_flags_has(io, RSND_STREAM_TDM_SPLIT); +} + +/* + * 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); + + switch (snd_pcm_format_width(runtime->format)) { + case 8: + return 16 << 16; + case 16: + return 8 << 16; + case 24: + return 0 << 16; + } + + dev_warn(dev, "not supported sample bits\n"); + + return 0; +} + +/* + * DALIGN function + */ +u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io) +{ + static const u32 dalign_values[8] = { + 0x76543210, 0x00000032, 0x00007654, 0x00000076, + 0xfedcba98, 0x000000ba, 0x0000fedc, 0x000000fe, + }; + int id = 0; + struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io); + struct rsnd_mod *target; + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); + u32 dalign; + + /* + * *Hardware* L/R and *Software* L/R are inverted for 16bit data. + * 31..16 15...0 + * HW: [L ch] [R ch] + * SW: [R ch] [L ch] + * We need to care about inversion timing to control + * Playback/Capture correctly. + * The point is [DVC] needs *Hardware* L/R, [MEM] needs *Software* L/R + * + * sL/R : software L/R + * hL/R : hardware L/R + * (*) : conversion timing + * + * Playback + * sL/R (*) hL/R hL/R hL/R hL/R hL/R + * [MEM] -> [SRC] -> [DVC] -> [CMD] -> [SSIU] -> [SSI] -> codec + * + * Capture + * hL/R hL/R hL/R hL/R hL/R (*) sL/R + * codec -> [SSI] -> [SSIU] -> [SRC] -> [DVC] -> [CMD] -> [MEM] + */ + if (rsnd_io_is_play(io)) { + struct rsnd_mod *src = rsnd_io_to_mod_src(io); + + target = src ? src : ssiu; + } else { + struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io); + + target = cmd ? cmd : ssiu; + } + + if (mod == ssiu) + id = rsnd_mod_id_sub(mod); + + dalign = dalign_values[id]; + + if (mod == target && snd_pcm_format_width(runtime->format) == 16) { + /* Target mod needs inverted DALIGN when 16bit */ + dalign = (dalign & 0xf0f0f0f0) >> 4 | + (dalign & 0x0f0f0f0f) << 4; + } + + return dalign; +} + +u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod) +{ + static const enum rsnd_mod_type playback_mods[] = { + RSND_MOD_SRC, + RSND_MOD_CMD, + RSND_MOD_SSIU, + }; + static const enum rsnd_mod_type capture_mods[] = { + RSND_MOD_CMD, + RSND_MOD_SRC, + RSND_MOD_SSIU, + }; + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); + struct rsnd_mod *tmod = NULL; + const enum rsnd_mod_type *mods = + rsnd_io_is_play(io) ? + playback_mods : capture_mods; + int i; + + /* + * This is needed for 24bit data + * We need to shift 8bit + * + * Linux 24bit data is located as 0x00****** + * HW 24bit data is located as 0x******00 + * + */ + if (snd_pcm_format_width(runtime->format) != 24) + return 0; + + for (i = 0; i < ARRAY_SIZE(playback_mods); i++) { + tmod = rsnd_io_to_mod(io, mods[i]); + if (tmod) + break; + } + + if (tmod != mod) + return 0; + + if (rsnd_io_is_play(io)) + return (0 << 20) | /* shift to Left */ + (8 << 16); /* 8bit */ + else + return (1 << 20) | /* shift to Right */ + (8 << 16); /* 8bit */ +} + +/* + * rsnd_dai functions + */ +struct rsnd_mod *rsnd_mod_next(int *iterator, + struct rsnd_dai_stream *io, + enum rsnd_mod_type *array, + int array_size) +{ + int max = array ? array_size : RSND_MOD_MAX; + + for (; *iterator < max; (*iterator)++) { + enum rsnd_mod_type type = (array) ? array[*iterator] : *iterator; + struct rsnd_mod *mod = rsnd_io_to_mod(io, type); + + if (mod) + return mod; + } + + return NULL; +} + +static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = { + { + /* CAPTURE */ + RSND_MOD_AUDMAPP, + RSND_MOD_AUDMA, + RSND_MOD_DVC, + RSND_MOD_MIX, + RSND_MOD_CTU, + RSND_MOD_CMD, + RSND_MOD_SRC, + RSND_MOD_SSIU, + RSND_MOD_SSIM3, + RSND_MOD_SSIM2, + RSND_MOD_SSIM1, + RSND_MOD_SSIP, + RSND_MOD_SSI, + }, { + /* PLAYBACK */ + RSND_MOD_AUDMAPP, + RSND_MOD_AUDMA, + RSND_MOD_SSIM3, + RSND_MOD_SSIM2, + RSND_MOD_SSIM1, + RSND_MOD_SSIP, + RSND_MOD_SSI, + RSND_MOD_SSIU, + RSND_MOD_DVC, + RSND_MOD_MIX, + RSND_MOD_CTU, + RSND_MOD_CMD, + RSND_MOD_SRC, + }, +}; + +static int rsnd_status_update(struct rsnd_dai_stream *io, + struct rsnd_mod *mod, enum rsnd_mod_type type, + int shift, int add, int timing) +{ + u32 *status = mod->ops->get_status(mod, io, type); + u32 mask = 0xF << shift; + u8 val = (*status >> shift) & 0xF; + u8 next_val = (val + add) & 0xF; + int func_call = (val == timing); + + /* no status update */ + if (add == 0 || shift == 28) + return 1; + + if (next_val == 0xF) /* underflow case */ + func_call = -1; + else + *status = (*status & ~mask) + (next_val << shift); + + return func_call; +} + +#define rsnd_dai_call(fn, io, param...) \ +({ \ + struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io)); \ + struct rsnd_mod *mod; \ + int is_play = rsnd_io_is_play(io); \ + int ret = 0, i; \ + enum rsnd_mod_type *types = rsnd_mod_sequence[is_play]; \ + for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) { \ + int tmp = 0; \ + int func_call = rsnd_status_update(io, mod, types[i], \ + __rsnd_mod_shift_##fn, \ + __rsnd_mod_add_##fn, \ + __rsnd_mod_call_##fn); \ + if (func_call > 0 && (mod)->ops->fn) \ + tmp = (mod)->ops->fn(mod, io, param); \ + if (unlikely(func_call < 0) || \ + unlikely(tmp && (tmp != -EPROBE_DEFER))) \ + dev_err(dev, "%s : %s error (%d, %d)\n", \ + rsnd_mod_name(mod), #fn, tmp, func_call);\ + ret |= tmp; \ + } \ + ret; \ +}) + +int rsnd_dai_connect(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + enum rsnd_mod_type type) +{ + struct rsnd_priv *priv; + struct device *dev; + + if (!mod) + return -EIO; + + if (io->mod[type] == mod) + return 0; + + if (io->mod[type]) + return -EINVAL; + + priv = rsnd_mod_to_priv(mod); + dev = rsnd_priv_to_dev(priv); + + io->mod[type] = mod; + + dev_dbg(dev, "%s is connected to io (%s)\n", + rsnd_mod_name(mod), + rsnd_io_is_play(io) ? "Playback" : "Capture"); + + return 0; +} + +static void rsnd_dai_disconnect(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + enum rsnd_mod_type type) +{ + io->mod[type] = NULL; +} + +int rsnd_rdai_channels_ctrl(struct rsnd_dai *rdai, + int max_channels) +{ + if (max_channels > 0) + rdai->max_channels = max_channels; + + return rdai->max_channels; +} + +int rsnd_rdai_ssi_lane_ctrl(struct rsnd_dai *rdai, + int ssi_lane) +{ + if (ssi_lane > 0) + rdai->ssi_lane = ssi_lane; + + return rdai->ssi_lane; +} + +int rsnd_rdai_width_ctrl(struct rsnd_dai *rdai, int width) +{ + if (width > 0) + rdai->chan_width = width; + + return rdai->chan_width; +} + +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 snd_soc_dai_driver +*rsnd_daidrv_get(struct rsnd_priv *priv, int id) +{ + if ((id < 0) || (id >= rsnd_rdai_nr(priv))) + return NULL; + + return priv->daidrv + 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 + */ +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) +{ + io->substream = substream; +} + +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 = asoc_substream_to_rtd(substream); + + return asoc_rtd_to_cpu(rtd, 0); +} + +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 ret; + unsigned long flags; + + spin_lock_irqsave(&priv->lock, flags); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + 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; + + ret = rsnd_dai_call(irq, io, priv, 1); + if (ret < 0) + goto dai_trigger_end; + + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + ret = rsnd_dai_call(irq, io, priv, 0); + + ret |= rsnd_dai_call(stop, io, priv); + + ret |= rsnd_dai_call(quit, io, priv); + + 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 clock master for audio interface */ + switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { + case SND_SOC_DAIFMT_BC_FC: + rdai->clk_master = 0; + break; + case SND_SOC_DAIFMT_BP_FP: + rdai->clk_master = 1; /* 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: + case SND_SOC_DAIFMT_DSP_B: + 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; + case SND_SOC_DAIFMT_DSP_A: + rdai->sys_delay = 0; + rdai->data_alignment = 0; + rdai->frm_clk_inv = 1; + break; + } + + /* set clock inversion */ + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_IF: + rdai->frm_clk_inv = !rdai->frm_clk_inv; + break; + case SND_SOC_DAIFMT_IB_NF: + rdai->bit_clk_inv = !rdai->bit_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 int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai, + u32 tx_mask, u32 rx_mask, + int slots, int slot_width) +{ + struct rsnd_priv *priv = rsnd_dai_to_priv(dai); + struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); + struct device *dev = rsnd_priv_to_dev(priv); + + switch (slot_width) { + case 16: + case 24: + case 32: + break; + default: + /* use default */ + /* + * Indicate warning if DT has "dai-tdm-slot-width" + * but the value was not expected. + */ + if (slot_width) + dev_warn(dev, "unsupported TDM slot width (%d), force to use default 32\n", + slot_width); + slot_width = 32; + } + + switch (slots) { + case 2: + /* TDM Split Mode */ + case 6: + case 8: + /* TDM Extend Mode */ + rsnd_rdai_channels_set(rdai, slots); + rsnd_rdai_ssi_lane_set(rdai, 1); + rsnd_rdai_width_set(rdai, slot_width); + break; + default: + dev_err(dev, "unsupported TDM slots (%d)\n", slots); + return -EINVAL; + } + + return 0; +} + +static unsigned int rsnd_soc_hw_channels_list[] = { + 2, 6, 8, +}; + +static unsigned int rsnd_soc_hw_rate_list[] = { + 8000, + 11025, + 16000, + 22050, + 32000, + 44100, + 48000, + 64000, + 88200, + 96000, + 176400, + 192000, +}; + +static int rsnd_soc_hw_rule(struct rsnd_dai *rdai, + unsigned int *list, int list_num, + struct snd_interval *baseline, struct snd_interval *iv, + struct rsnd_dai_stream *io, char *unit) +{ + struct snd_interval p; + unsigned int rate; + int i; + + snd_interval_any(&p); + p.min = UINT_MAX; + p.max = 0; + + for (i = 0; i < list_num; i++) { + + if (!snd_interval_test(iv, list[i])) + continue; + + rate = rsnd_ssi_clk_query(rdai, + baseline->min, list[i], NULL); + if (rate > 0) { + p.min = min(p.min, list[i]); + p.max = max(p.max, list[i]); + } + + rate = rsnd_ssi_clk_query(rdai, + baseline->max, list[i], NULL); + if (rate > 0) { + p.min = min(p.min, list[i]); + p.max = max(p.max, list[i]); + } + } + + /* Indicate error once if it can't handle */ + if (!rsnd_flags_has(io, RSND_HW_RULE_ERR) && (p.min > p.max)) { + struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); + struct device *dev = rsnd_priv_to_dev(priv); + + dev_warn(dev, "It can't handle %d %s <-> %d %s\n", + baseline->min, unit, baseline->max, unit); + rsnd_flags_set(io, RSND_HW_RULE_ERR); + } + + return snd_interval_refine(iv, &p); +} + +static int rsnd_soc_hw_rule_rate(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); + struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); + struct snd_interval ic; + struct rsnd_dai_stream *io = rule->private; + struct rsnd_dai *rdai = rsnd_io_to_rdai(io); + + /* + * possible sampling rate limitation is same as + * 2ch if it supports multi ssi + * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init()) + */ + ic = *ic_; + ic.min = + ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params); + + return rsnd_soc_hw_rule(rdai, rsnd_soc_hw_rate_list, + ARRAY_SIZE(rsnd_soc_hw_rate_list), + &ic, ir, io, "ch"); +} + +static int rsnd_soc_hw_rule_channels(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); + struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); + struct snd_interval ic; + struct rsnd_dai_stream *io = rule->private; + struct rsnd_dai *rdai = rsnd_io_to_rdai(io); + + /* + * possible sampling rate limitation is same as + * 2ch if it supports multi ssi + * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init()) + */ + ic = *ic_; + ic.min = + ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params); + + return rsnd_soc_hw_rule(rdai, rsnd_soc_hw_channels_list, + ARRAY_SIZE(rsnd_soc_hw_channels_list), + ir, &ic, io, "Hz"); +} + +static const 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_soc_dai_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); + struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); + struct snd_pcm_hw_constraint_list *constraint = &rdai->constraint; + struct snd_pcm_runtime *runtime = substream->runtime; + unsigned int max_channels = rsnd_rdai_channels_get(rdai); + int i; + + rsnd_flags_del(io, RSND_HW_RULE_ERR); + + rsnd_dai_stream_init(io, substream); + + /* + * Channel Limitation + * It depends on Platform design + */ + constraint->list = rsnd_soc_hw_channels_list; + constraint->count = 0; + constraint->mask = 0; + + for (i = 0; i < ARRAY_SIZE(rsnd_soc_hw_channels_list); i++) { + if (rsnd_soc_hw_channels_list[i] > max_channels) + break; + constraint->count = i + 1; + } + + snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware); + + snd_pcm_hw_constraint_list(runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, constraint); + + snd_pcm_hw_constraint_integer(runtime, + SNDRV_PCM_HW_PARAM_PERIODS); + + /* + * Sampling Rate / Channel Limitation + * It depends on Clock Master Mode + */ + if (rsnd_rdai_is_clk_master(rdai)) { + int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; + + snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, + rsnd_soc_hw_rule_rate, + is_play ? &rdai->playback : &rdai->capture, + SNDRV_PCM_HW_PARAM_CHANNELS, -1); + snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, + rsnd_soc_hw_rule_channels, + is_play ? &rdai->playback : &rdai->capture, + SNDRV_PCM_HW_PARAM_RATE, -1); + } + + return 0; +} + +static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); + struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); + struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); + + /* + * call rsnd_dai_call without spinlock + */ + rsnd_dai_call(cleanup, io, priv); + + rsnd_dai_stream_quit(io); +} + +static int rsnd_soc_dai_prepare(struct snd_pcm_substream *substream, + 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); + + return rsnd_dai_call(prepare, io, priv); +} + +static u64 rsnd_soc_dai_formats[] = { + /* + * 1st Priority + * + * Well tested formats. + * Select below from Sound Card, not auto + * SND_SOC_DAIFMT_CBC_CFC + * SND_SOC_DAIFMT_CBP_CFP + */ + SND_SOC_POSSIBLE_DAIFMT_I2S | + SND_SOC_POSSIBLE_DAIFMT_RIGHT_J | + SND_SOC_POSSIBLE_DAIFMT_LEFT_J | + SND_SOC_POSSIBLE_DAIFMT_NB_NF | + SND_SOC_POSSIBLE_DAIFMT_NB_IF | + SND_SOC_POSSIBLE_DAIFMT_IB_NF | + SND_SOC_POSSIBLE_DAIFMT_IB_IF, + /* + * 2nd Priority + * + * Supported, but not well tested + */ + SND_SOC_POSSIBLE_DAIFMT_DSP_A | + SND_SOC_POSSIBLE_DAIFMT_DSP_B, +}; + +static void rsnd_parse_tdm_split_mode(struct rsnd_priv *priv, + struct rsnd_dai_stream *io, + struct device_node *dai_np) +{ + struct device *dev = rsnd_priv_to_dev(priv); + struct device_node *ssiu_np = rsnd_ssiu_of_node(priv); + struct device_node *np; + int is_play = rsnd_io_is_play(io); + int i; + + if (!ssiu_np) + return; + + /* + * This driver assumes that it is TDM Split mode + * if it includes ssiu node + */ + for (i = 0;; i++) { + struct device_node *node = is_play ? + of_parse_phandle(dai_np, "playback", i) : + of_parse_phandle(dai_np, "capture", i); + + if (!node) + break; + + for_each_child_of_node(ssiu_np, np) { + if (np == node) { + rsnd_flags_set(io, RSND_STREAM_TDM_SPLIT); + dev_dbg(dev, "%s is part of TDM Split\n", io->name); + } + } + + of_node_put(node); + } + + of_node_put(ssiu_np); +} + +static void rsnd_parse_connect_simple(struct rsnd_priv *priv, + struct rsnd_dai_stream *io, + struct device_node *dai_np) +{ + if (!rsnd_io_to_mod_ssi(io)) + return; + + rsnd_parse_tdm_split_mode(priv, io, dai_np); +} + +static void rsnd_parse_connect_graph(struct rsnd_priv *priv, + struct rsnd_dai_stream *io, + struct device_node *endpoint) +{ + struct device *dev = rsnd_priv_to_dev(priv); + struct device_node *remote_node; + + if (!rsnd_io_to_mod_ssi(io)) + return; + + remote_node = of_graph_get_remote_port_parent(endpoint); + + /* HDMI0 */ + if (strstr(remote_node->full_name, "hdmi@fead0000")) { + rsnd_flags_set(io, RSND_STREAM_HDMI0); + dev_dbg(dev, "%s connected to HDMI0\n", io->name); + } + + /* HDMI1 */ + if (strstr(remote_node->full_name, "hdmi@feae0000")) { + rsnd_flags_set(io, RSND_STREAM_HDMI1); + dev_dbg(dev, "%s connected to HDMI1\n", io->name); + } + + rsnd_parse_tdm_split_mode(priv, io, endpoint); + + of_node_put(remote_node); +} + +void rsnd_parse_connect_common(struct rsnd_dai *rdai, char *name, + struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id), + struct device_node *node, + struct device_node *playback, + struct device_node *capture) +{ + struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); + struct device *dev = rsnd_priv_to_dev(priv); + struct device_node *np; + int i; + + if (!node) + return; + + i = 0; + for_each_child_of_node(node, np) { + struct rsnd_mod *mod; + + i = rsnd_node_fixed_index(dev, np, name, i); + if (i < 0) { + of_node_put(np); + break; + } + + mod = mod_get(priv, i); + + if (np == playback) + rsnd_dai_connect(mod, &rdai->playback, mod->type); + if (np == capture) + rsnd_dai_connect(mod, &rdai->capture, mod->type); + i++; + } + + of_node_put(node); +} + +int rsnd_node_fixed_index(struct device *dev, struct device_node *node, char *name, int idx) +{ + char node_name[16]; + + /* + * rsnd is assuming each device nodes are sequential numbering, + * but some of them are not. + * This function adjusts index for it. + * + * ex) + * Normal case, special case + * ssi-0 + * ssi-1 + * ssi-2 + * ssi-3 ssi-3 + * ssi-4 ssi-4 + * ... + * + * assume Max 64 node + */ + for (; idx < 64; idx++) { + snprintf(node_name, sizeof(node_name), "%s-%d", name, idx); + + if (strncmp(node_name, of_node_full_name(node), sizeof(node_name)) == 0) + return idx; + } + + dev_err(dev, "strange node numbering (%s)", + of_node_full_name(node)); + return -EINVAL; +} + +int rsnd_node_count(struct rsnd_priv *priv, struct device_node *node, char *name) +{ + struct device *dev = rsnd_priv_to_dev(priv); + struct device_node *np; + int i; + + i = 0; + for_each_child_of_node(node, np) { + i = rsnd_node_fixed_index(dev, np, name, i); + if (i < 0) { + of_node_put(np); + return 0; + } + i++; + } + + return i; +} + +static int rsnd_dai_of_node(struct rsnd_priv *priv, int *is_graph) +{ + struct device *dev = rsnd_priv_to_dev(priv); + struct device_node *np = dev->of_node; + struct device_node *ports, *node; + int nr = 0; + int i = 0; + + *is_graph = 0; + + /* + * parse both previous dai (= rcar_sound,dai), and + * graph dai (= ports/port) + */ + + /* + * Simple-Card + */ + node = of_get_child_by_name(np, RSND_NODE_DAI); + if (!node) + goto audio_graph; + + of_node_put(node); + + for_each_child_of_node(np, node) { + if (!of_node_name_eq(node, RSND_NODE_DAI)) + continue; + + priv->component_dais[i] = of_get_child_count(node); + nr += priv->component_dais[i]; + i++; + if (i >= RSND_MAX_COMPONENT) { + dev_info(dev, "reach to max component\n"); + of_node_put(node); + break; + } + } + + return nr; + +audio_graph: + /* + * Audio-Graph-Card + */ + for_each_child_of_node(np, ports) { + if (!of_node_name_eq(ports, "ports") && + !of_node_name_eq(ports, "port")) + continue; + priv->component_dais[i] = of_graph_get_endpoint_count(ports); + nr += priv->component_dais[i]; + i++; + if (i >= RSND_MAX_COMPONENT) { + dev_info(dev, "reach to max component\n"); + of_node_put(node); + of_node_put(ports); + break; + } + } + + *is_graph = 1; + + return nr; +} + + +#define PREALLOC_BUFFER (32 * 1024) +#define PREALLOC_BUFFER_MAX (32 * 1024) + +static int rsnd_preallocate_pages(struct snd_soc_pcm_runtime *rtd, + struct rsnd_dai_stream *io, + int stream) +{ + struct rsnd_priv *priv = rsnd_io_to_priv(io); + struct device *dev = rsnd_priv_to_dev(priv); + struct snd_pcm_substream *substream; + + /* + * use Audio-DMAC dev if we can use IPMMU + * see + * rsnd_dmaen_attach() + */ + if (io->dmac_dev) + dev = io->dmac_dev; + + for (substream = rtd->pcm->streams[stream].substream; + substream; + substream = substream->next) { + snd_pcm_set_managed_buffer(substream, + SNDRV_DMA_TYPE_DEV, + dev, + PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); + } + + return 0; +} + +static int rsnd_soc_dai_pcm_new(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *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; + + ret = rsnd_preallocate_pages(rtd, &rdai->playback, + SNDRV_PCM_STREAM_PLAYBACK); + if (ret) + return ret; + + ret = rsnd_preallocate_pages(rtd, &rdai->capture, + SNDRV_PCM_STREAM_CAPTURE); + if (ret) + return ret; + + return 0; +} + +static const struct snd_soc_dai_ops rsnd_soc_dai_ops = { + .pcm_new = rsnd_soc_dai_pcm_new, + .startup = rsnd_soc_dai_startup, + .shutdown = rsnd_soc_dai_shutdown, + .trigger = rsnd_soc_dai_trigger, + .set_fmt = rsnd_soc_dai_set_fmt, + .set_tdm_slot = rsnd_soc_set_dai_tdm_slot, + .prepare = rsnd_soc_dai_prepare, + .auto_selectable_formats = rsnd_soc_dai_formats, + .num_auto_selectable_formats = ARRAY_SIZE(rsnd_soc_dai_formats), +}; + +static void __rsnd_dai_probe(struct rsnd_priv *priv, + struct device_node *dai_np, + struct device_node *node_np, + uint32_t node_arg, + int dai_i) +{ + struct rsnd_dai_stream *io_playback; + struct rsnd_dai_stream *io_capture; + struct snd_soc_dai_driver *drv; + struct rsnd_dai *rdai; + struct device *dev = rsnd_priv_to_dev(priv); + int playback_exist = 0, capture_exist = 0; + int io_i; + + rdai = rsnd_rdai_get(priv, dai_i); + drv = rsnd_daidrv_get(priv, dai_i); + io_playback = &rdai->playback; + io_capture = &rdai->capture; + + snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i); + + /* for multi Component */ + rdai->dai_args.np = node_np; + rdai->dai_args.args_count = 1; + rdai->dai_args.args[0] = node_arg; + + rdai->priv = priv; + drv->name = rdai->name; + drv->ops = &rsnd_soc_dai_ops; + drv->id = dai_i; + drv->dai_args = &rdai->dai_args; + + io_playback->rdai = rdai; + io_capture->rdai = rdai; + rsnd_rdai_channels_set(rdai, 2); /* default 2ch */ + rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */ + rsnd_rdai_width_set(rdai, 32); /* default 32bit width */ + + for (io_i = 0;; io_i++) { + struct device_node *playback = of_parse_phandle(dai_np, "playback", io_i); + struct device_node *capture = of_parse_phandle(dai_np, "capture", io_i); + + if (!playback && !capture) + break; + + if (io_i == 0) { + /* check whether playback/capture property exists */ + if (playback) + playback_exist = 1; + if (capture) + capture_exist = 1; + } + + rsnd_parse_connect_ssi(rdai, playback, capture); + rsnd_parse_connect_ssiu(rdai, playback, capture); + rsnd_parse_connect_src(rdai, playback, capture); + rsnd_parse_connect_ctu(rdai, playback, capture); + rsnd_parse_connect_mix(rdai, playback, capture); + rsnd_parse_connect_dvc(rdai, playback, capture); + + of_node_put(playback); + of_node_put(capture); + } + + if (playback_exist) { + snprintf(io_playback->name, RSND_DAI_NAME_SIZE, "DAI%d Playback", dai_i); + drv->playback.rates = RSND_RATES; + drv->playback.formats = RSND_FMTS; + drv->playback.channels_min = 2; + drv->playback.channels_max = 8; + drv->playback.stream_name = io_playback->name; + } + if (capture_exist) { + snprintf(io_capture->name, RSND_DAI_NAME_SIZE, "DAI%d Capture", dai_i); + drv->capture.rates = RSND_RATES; + drv->capture.formats = RSND_FMTS; + drv->capture.channels_min = 2; + drv->capture.channels_max = 8; + drv->capture.stream_name = io_capture->name; + } + + if (rsnd_ssi_is_pin_sharing(io_capture) || + rsnd_ssi_is_pin_sharing(io_playback)) { + /* should have symmetric_rate if pin sharing */ + drv->symmetric_rate = 1; + } + + dev_dbg(dev, "%s (%s/%s)\n", rdai->name, + rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ", + rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- "); +} + +static int rsnd_dai_probe(struct rsnd_priv *priv) +{ + struct snd_soc_dai_driver *rdrv; + struct device *dev = rsnd_priv_to_dev(priv); + struct device_node *np = dev->of_node; + struct rsnd_dai *rdai; + int nr = 0; + int is_graph; + int dai_i; + + nr = rsnd_dai_of_node(priv, &is_graph); + if (!nr) + return -EINVAL; + + rdrv = devm_kcalloc(dev, nr, sizeof(*rdrv), GFP_KERNEL); + rdai = devm_kcalloc(dev, nr, sizeof(*rdai), GFP_KERNEL); + if (!rdrv || !rdai) + return -ENOMEM; + + priv->rdai_nr = nr; + priv->daidrv = rdrv; + priv->rdai = rdai; + + /* + * parse all dai + */ + dai_i = 0; + if (is_graph) { + struct device_node *ports; + struct device_node *dai_np; + + for_each_child_of_node(np, ports) { + if (!of_node_name_eq(ports, "ports") && + !of_node_name_eq(ports, "port")) + continue; + for_each_endpoint_of_node(ports, dai_np) { + __rsnd_dai_probe(priv, dai_np, dai_np, 0, dai_i); + if (rsnd_is_gen3(priv) || rsnd_is_gen4(priv)) { + rdai = rsnd_rdai_get(priv, dai_i); + + rsnd_parse_connect_graph(priv, &rdai->playback, dai_np); + rsnd_parse_connect_graph(priv, &rdai->capture, dai_np); + } + dai_i++; + } + } + } else { + struct device_node *node; + struct device_node *dai_np; + + for_each_child_of_node(np, node) { + if (!of_node_name_eq(node, RSND_NODE_DAI)) + continue; + + for_each_child_of_node(node, dai_np) { + __rsnd_dai_probe(priv, dai_np, np, dai_i, dai_i); + if (rsnd_is_gen3(priv) || rsnd_is_gen4(priv)) { + rdai = rsnd_rdai_get(priv, dai_i); + + rsnd_parse_connect_simple(priv, &rdai->playback, dai_np); + rsnd_parse_connect_simple(priv, &rdai->capture, dai_np); + } + dai_i++; + } + } + } + + return 0; +} + +/* + * pcm ops + */ +static int rsnd_hw_update(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); + struct rsnd_priv *priv = rsnd_io_to_priv(io); + unsigned long flags; + int ret; + + spin_lock_irqsave(&priv->lock, flags); + if (hw_params) + ret = rsnd_dai_call(hw_params, io, substream, hw_params); + else + ret = rsnd_dai_call(hw_free, io, substream); + spin_unlock_irqrestore(&priv->lock, flags); + + return ret; +} + +static int rsnd_hw_params(struct snd_soc_component *component, + 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); + struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream); + + /* + * rsnd assumes that it might be used under DPCM if user want to use + * channel / rate convert. Then, rsnd should be FE. + * And then, this function will be called *after* BE settings. + * this means, each BE already has fixuped hw_params. + * see + * dpcm_fe_dai_hw_params() + * dpcm_be_dai_hw_params() + */ + io->converted_rate = 0; + io->converted_chan = 0; + if (fe->dai_link->dynamic) { + struct rsnd_priv *priv = rsnd_io_to_priv(io); + struct device *dev = rsnd_priv_to_dev(priv); + struct snd_soc_dpcm *dpcm; + int stream = substream->stream; + + for_each_dpcm_be(fe, stream, dpcm) { + struct snd_soc_pcm_runtime *be = dpcm->be; + struct snd_pcm_hw_params *be_params = &be->dpcm[stream].hw_params; + + if (params_channels(hw_params) != params_channels(be_params)) + io->converted_chan = params_channels(be_params); + if (params_rate(hw_params) != params_rate(be_params)) + io->converted_rate = params_rate(be_params); + } + if (io->converted_chan) + dev_dbg(dev, "convert channels = %d\n", io->converted_chan); + if (io->converted_rate) { + /* + * SRC supports convert rates from params_rate(hw_params)/k_down + * to params_rate(hw_params)*k_up, where k_up is always 6, and + * k_down depends on number of channels and SRC unit. + * So all SRC units can upsample audio up to 6 times regardless + * its number of channels. And all SRC units can downsample + * 2 channel audio up to 6 times too. + */ + int k_up = 6; + int k_down = 6; + int channel; + struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io); + + dev_dbg(dev, "convert rate = %d\n", io->converted_rate); + + channel = io->converted_chan ? io->converted_chan : + params_channels(hw_params); + + switch (rsnd_mod_id(src_mod)) { + /* + * SRC0 can downsample 4, 6 and 8 channel audio up to 4 times. + * SRC1, SRC3 and SRC4 can downsample 4 channel audio + * up to 4 times. + * SRC1, SRC3 and SRC4 can downsample 6 and 8 channel audio + * no more than twice. + */ + case 1: + case 3: + case 4: + if (channel > 4) { + k_down = 2; + break; + } + fallthrough; + case 0: + if (channel > 2) + k_down = 4; + break; + + /* Other SRC units do not support more than 2 channels */ + default: + if (channel > 2) + return -EINVAL; + } + + if (params_rate(hw_params) > io->converted_rate * k_down) { + hw_param_interval(hw_params, SNDRV_PCM_HW_PARAM_RATE)->min = + io->converted_rate * k_down; + hw_param_interval(hw_params, SNDRV_PCM_HW_PARAM_RATE)->max = + io->converted_rate * k_down; + hw_params->cmask |= SNDRV_PCM_HW_PARAM_RATE; + } else if (params_rate(hw_params) * k_up < io->converted_rate) { + hw_param_interval(hw_params, SNDRV_PCM_HW_PARAM_RATE)->min = + DIV_ROUND_UP(io->converted_rate, k_up); + hw_param_interval(hw_params, SNDRV_PCM_HW_PARAM_RATE)->max = + DIV_ROUND_UP(io->converted_rate, k_up); + hw_params->cmask |= SNDRV_PCM_HW_PARAM_RATE; + } + + /* + * TBD: Max SRC input and output rates also depend on number + * of channels and SRC unit: + * SRC1, SRC3 and SRC4 do not support more than 128kHz + * for 6 channel and 96kHz for 8 channel audio. + * Perhaps this function should return EINVAL if the input or + * the output rate exceeds the limitation. + */ + } + } + + return rsnd_hw_update(substream, hw_params); +} + +static int rsnd_hw_free(struct snd_soc_component *component, + struct snd_pcm_substream *substream) +{ + return rsnd_hw_update(substream, NULL); +} + +static snd_pcm_uframes_t rsnd_pointer(struct snd_soc_component *component, + struct snd_pcm_substream *substream) +{ + 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); + snd_pcm_uframes_t pointer = 0; + + rsnd_dai_call(pointer, io, &pointer); + + return pointer; +} + +/* + * snd_kcontrol + */ +static int rsnd_kctrl_info(struct snd_kcontrol *kctrl, + struct snd_ctl_elem_info *uinfo) +{ + struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(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; + strscpy(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 = snd_kcontrol_chip(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_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl); + int i, change = 0; + + if (!cfg->accept(cfg->io)) + return 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, cfg->mod); + + return change; +} + +int rsnd_kctrl_accept_anytime(struct rsnd_dai_stream *io) +{ + return 1; +} + +int rsnd_kctrl_accept_runtime(struct rsnd_dai_stream *io) +{ + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); + struct rsnd_priv *priv = rsnd_io_to_priv(io); + struct device *dev = rsnd_priv_to_dev(priv); + + if (!runtime) { + dev_warn(dev, "Can't update kctrl when idle\n"); + return 0; + } + + return 1; +} + +struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg) +{ + cfg->cfg.val = cfg->val; + + return &cfg->cfg; +} + +struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg) +{ + cfg->cfg.val = &cfg->val; + + return &cfg->cfg; +} + +const char * const volume_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 = VOLUME_RAMP_MAX_MIX */ + "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 = VOLUME_RAMP_MAX_DVC */ +}; + +int rsnd_kctrl_new(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + struct snd_soc_pcm_runtime *rtd, + const unsigned char *name, + int (*accept)(struct rsnd_dai_stream *io), + void (*update)(struct rsnd_dai_stream *io, + struct rsnd_mod *mod), + struct rsnd_kctrl_cfg *cfg, + const char * const *texts, + int size, + u32 max) +{ + 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->num, + .get = rsnd_kctrl_get, + .put = rsnd_kctrl_put, + }; + int ret; + + /* + * 1) Avoid duplicate register for DVC with MIX case + * 2) Allow duplicate register for MIX + * 3) re-register if card was rebinded + */ + list_for_each_entry(kctrl, &card->controls, list) { + struct rsnd_kctrl_cfg *c = kctrl->private_data; + + if (c == cfg) + return 0; + } + + if (size > RSND_MAX_CHANNELS) + return -EINVAL; + + kctrl = snd_ctl_new1(&knew, cfg); + if (!kctrl) + return -ENOMEM; + + ret = snd_ctl_add(card, kctrl); + if (ret < 0) + return ret; + + cfg->texts = texts; + cfg->max = max; + cfg->size = size; + cfg->accept = accept; + cfg->update = update; + cfg->card = card; + cfg->kctrl = kctrl; + cfg->io = io; + cfg->mod = mod; + + return 0; +} + +/* + * snd_soc_component + */ +static const struct snd_soc_component_driver rsnd_soc_component = { + .name = "rsnd", + .probe = rsnd_debugfs_probe, + .hw_params = rsnd_hw_params, + .hw_free = rsnd_hw_free, + .pointer = rsnd_pointer, + .legacy_dai_naming = 1, +}; + +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) { + struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io); + struct rsnd_mod *mod; + int i; + + /* + * 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 all mod from io + * and, re connect ssi + */ + for_each_rsnd_mod(i, mod, io) + rsnd_dai_disconnect(mod, io, i); + rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI); + + /* + * 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 rsnd_priv *priv; + struct device *dev = &pdev->dev; + struct rsnd_dai *rdai; + int (*probe_func[])(struct rsnd_priv *priv) = { + rsnd_gen_probe, + rsnd_dma_probe, + rsnd_ssi_probe, + rsnd_ssiu_probe, + rsnd_src_probe, + rsnd_ctu_probe, + rsnd_mix_probe, + rsnd_dvc_probe, + rsnd_cmd_probe, + rsnd_adg_probe, + rsnd_dai_probe, + }; + int ret, i; + int ci; + + /* + * init priv data + */ + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENODEV; + + priv->pdev = pdev; + priv->flags = (unsigned long)of_device_get_match_data(dev); + spin_lock_init(&priv->lock); + + /* + * init each module + */ + for (i = 0; i < ARRAY_SIZE(probe_func); i++) { + ret = probe_func[i](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 + */ + ci = 0; + for (i = 0; priv->component_dais[i] > 0; i++) { + int nr = priv->component_dais[i]; + + ret = devm_snd_soc_register_component(dev, &rsnd_soc_component, + priv->daidrv + ci, nr); + if (ret < 0) { + dev_err(dev, "cannot snd component register\n"); + goto exit_snd_probe; + } + + ci += nr; + } + + pm_runtime_enable(dev); + + dev_info(dev, "probed\n"); + return ret; + +exit_snd_probe: + for_each_rsnd_dai(rdai, priv, i) { + rsnd_dai_call(remove, &rdai->playback, priv); + rsnd_dai_call(remove, &rdai->capture, priv); + } + + /* + * adg is very special mod which can't use rsnd_dai_call(remove), + * and it registers ADG clock on probe. + * It should be unregister if probe failed. + * Mainly it is assuming -EPROBE_DEFER case + */ + rsnd_adg_remove(priv); + + return ret; +} + +static void rsnd_remove(struct platform_device *pdev) +{ + struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); + struct rsnd_dai *rdai; + void (*remove_func[])(struct rsnd_priv *priv) = { + rsnd_ssi_remove, + rsnd_ssiu_remove, + rsnd_src_remove, + rsnd_ctu_remove, + rsnd_mix_remove, + rsnd_dvc_remove, + rsnd_cmd_remove, + rsnd_adg_remove, + }; + int i; + + pm_runtime_disable(&pdev->dev); + + for_each_rsnd_dai(rdai, priv, i) { + int ret; + + ret = rsnd_dai_call(remove, &rdai->playback, priv); + if (ret) + dev_warn(&pdev->dev, "Failed to remove playback dai #%d\n", i); + + ret = rsnd_dai_call(remove, &rdai->capture, priv); + if (ret) + dev_warn(&pdev->dev, "Failed to remove capture dai #%d\n", i); + } + + for (i = 0; i < ARRAY_SIZE(remove_func); i++) + remove_func[i](priv); +} + +static int __maybe_unused rsnd_suspend(struct device *dev) +{ + struct rsnd_priv *priv = dev_get_drvdata(dev); + + rsnd_adg_clk_disable(priv); + + return 0; +} + +static int __maybe_unused rsnd_resume(struct device *dev) +{ + struct rsnd_priv *priv = dev_get_drvdata(dev); + + rsnd_adg_clk_enable(priv); + + return 0; +} + +static const struct dev_pm_ops rsnd_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(rsnd_suspend, rsnd_resume) +}; + +static struct platform_driver rsnd_driver = { + .driver = { + .name = "rcar_sound", + .pm = &rsnd_pm_ops, + .of_match_table = rsnd_of_match, + }, + .probe = rsnd_probe, + .remove_new = rsnd_remove, +}; +module_platform_driver(rsnd_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("Renesas R-Car audio driver"); +MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); +MODULE_ALIAS("platform:rcar-pcm-audio"); |