diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/soc/soc-dai.c | 712 |
1 files changed, 712 insertions, 0 deletions
diff --git a/sound/soc/soc-dai.c b/sound/soc/soc-dai.c new file mode 100644 index 000000000..4705c3da6 --- /dev/null +++ b/sound/soc/soc-dai.c @@ -0,0 +1,712 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// soc-dai.c +// +// Copyright (C) 2019 Renesas Electronics Corp. +// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> +// + +#include <sound/soc.h> +#include <sound/soc-dai.h> +#include <sound/soc-link.h> + +#define soc_dai_ret(dai, ret) _soc_dai_ret(dai, __func__, ret) +static inline int _soc_dai_ret(struct snd_soc_dai *dai, + const char *func, int ret) +{ + /* Positive, Zero values are not errors */ + if (ret >= 0) + return ret; + + /* Negative values might be errors */ + switch (ret) { + case -EPROBE_DEFER: + case -ENOTSUPP: + break; + default: + dev_err(dai->dev, + "ASoC: error at %s on %s: %d\n", + func, dai->name, ret); + } + + return ret; +} + +/* + * We might want to check substream by using list. + * In such case, we can update these macros. + */ +#define soc_dai_mark_push(dai, substream, tgt) ((dai)->mark_##tgt = substream) +#define soc_dai_mark_pop(dai, substream, tgt) ((dai)->mark_##tgt = NULL) +#define soc_dai_mark_match(dai, substream, tgt) ((dai)->mark_##tgt == substream) + +/** + * snd_soc_dai_set_sysclk - configure DAI system or master clock. + * @dai: DAI + * @clk_id: DAI specific clock ID + * @freq: new clock frequency in Hz + * @dir: new clock direction - input/output. + * + * Configures the DAI master (MCLK) or system (SYSCLK) clocking. + */ +int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, + unsigned int freq, int dir) +{ + int ret; + + if (dai->driver->ops && + dai->driver->ops->set_sysclk) + ret = dai->driver->ops->set_sysclk(dai, clk_id, freq, dir); + else + ret = snd_soc_component_set_sysclk(dai->component, clk_id, 0, + freq, dir); + + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); + +/** + * snd_soc_dai_set_clkdiv - configure DAI clock dividers. + * @dai: DAI + * @div_id: DAI specific clock divider ID + * @div: new clock divisor. + * + * Configures the clock dividers. This is used to derive the best DAI bit and + * frame clocks from the system or master clock. It's best to set the DAI bit + * and frame clocks as low as possible to save system power. + */ +int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, + int div_id, int div) +{ + int ret = -EINVAL; + + if (dai->driver->ops && + dai->driver->ops->set_clkdiv) + ret = dai->driver->ops->set_clkdiv(dai, div_id, div); + + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv); + +/** + * snd_soc_dai_set_pll - configure DAI PLL. + * @dai: DAI + * @pll_id: DAI specific PLL ID + * @source: DAI specific source for the PLL + * @freq_in: PLL input clock frequency in Hz + * @freq_out: requested PLL output clock frequency in Hz + * + * Configures and enables PLL to generate output clock based on input clock. + */ +int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source, + unsigned int freq_in, unsigned int freq_out) +{ + int ret; + + if (dai->driver->ops && + dai->driver->ops->set_pll) + ret = dai->driver->ops->set_pll(dai, pll_id, source, + freq_in, freq_out); + else + ret = snd_soc_component_set_pll(dai->component, pll_id, source, + freq_in, freq_out); + + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); + +/** + * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio. + * @dai: DAI + * @ratio: Ratio of BCLK to Sample rate. + * + * Configures the DAI for a preset BCLK to sample rate ratio. + */ +int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio) +{ + int ret = -EINVAL; + + if (dai->driver->ops && + dai->driver->ops->set_bclk_ratio) + ret = dai->driver->ops->set_bclk_ratio(dai, ratio); + + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio); + +/** + * snd_soc_dai_set_fmt - configure DAI hardware audio format. + * @dai: DAI + * @fmt: SND_SOC_DAIFMT_* format value. + * + * Configures the DAI hardware format and clocking. + */ +int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + int ret = -ENOTSUPP; + + if (dai->driver->ops && + dai->driver->ops->set_fmt) + ret = dai->driver->ops->set_fmt(dai, fmt); + + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt); + +/** + * snd_soc_xlate_tdm_slot - generate tx/rx slot mask. + * @slots: Number of slots in use. + * @tx_mask: bitmask representing active TX slots. + * @rx_mask: bitmask representing active RX slots. + * + * Generates the TDM tx and rx slot default masks for DAI. + */ +static int snd_soc_xlate_tdm_slot_mask(unsigned int slots, + unsigned int *tx_mask, + unsigned int *rx_mask) +{ + if (*tx_mask || *rx_mask) + return 0; + + if (!slots) + return -EINVAL; + + *tx_mask = (1 << slots) - 1; + *rx_mask = (1 << slots) - 1; + + return 0; +} + +/** + * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation + * @dai: The DAI to configure + * @tx_mask: bitmask representing active TX slots. + * @rx_mask: bitmask representing active RX slots. + * @slots: Number of slots in use. + * @slot_width: Width in bits for each slot. + * + * This function configures the specified DAI for TDM operation. @slot contains + * the total number of slots of the TDM stream and @slot_with the width of each + * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the + * active slots of the TDM stream for the specified DAI, i.e. which slots the + * DAI should write to or read from. If a bit is set the corresponding slot is + * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to + * the first slot, bit 1 to the second slot and so on. The first active slot + * maps to the first channel of the DAI, the second active slot to the second + * channel and so on. + * + * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask, + * @rx_mask and @slot_width will be ignored. + * + * Returns 0 on success, a negative error code otherwise. + */ +int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, + unsigned int tx_mask, unsigned int rx_mask, + int slots, int slot_width) +{ + int ret = -ENOTSUPP; + + if (dai->driver->ops && + dai->driver->ops->xlate_tdm_slot_mask) + dai->driver->ops->xlate_tdm_slot_mask(slots, + &tx_mask, &rx_mask); + else + snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask); + + dai->tx_mask = tx_mask; + dai->rx_mask = rx_mask; + + if (dai->driver->ops && + dai->driver->ops->set_tdm_slot) + ret = dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask, + slots, slot_width); + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); + +/** + * snd_soc_dai_set_channel_map - configure DAI audio channel map + * @dai: DAI + * @tx_num: how many TX channels + * @tx_slot: pointer to an array which imply the TX slot number channel + * 0~num-1 uses + * @rx_num: how many RX channels + * @rx_slot: pointer to an array which imply the RX slot number channel + * 0~num-1 uses + * + * configure the relationship between channel number and TDM slot number. + */ +int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai, + unsigned int tx_num, unsigned int *tx_slot, + unsigned int rx_num, unsigned int *rx_slot) +{ + int ret = -ENOTSUPP; + + if (dai->driver->ops && + dai->driver->ops->set_channel_map) + ret = dai->driver->ops->set_channel_map(dai, tx_num, tx_slot, + rx_num, rx_slot); + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map); + +/** + * snd_soc_dai_get_channel_map - Get DAI audio channel map + * @dai: DAI + * @tx_num: how many TX channels + * @tx_slot: pointer to an array which imply the TX slot number channel + * 0~num-1 uses + * @rx_num: how many RX channels + * @rx_slot: pointer to an array which imply the RX slot number channel + * 0~num-1 uses + */ +int snd_soc_dai_get_channel_map(struct snd_soc_dai *dai, + unsigned int *tx_num, unsigned int *tx_slot, + unsigned int *rx_num, unsigned int *rx_slot) +{ + int ret = -ENOTSUPP; + + if (dai->driver->ops && + dai->driver->ops->get_channel_map) + ret = dai->driver->ops->get_channel_map(dai, tx_num, tx_slot, + rx_num, rx_slot); + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_get_channel_map); + +/** + * snd_soc_dai_set_tristate - configure DAI system or master clock. + * @dai: DAI + * @tristate: tristate enable + * + * Tristates the DAI so that others can use it. + */ +int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate) +{ + int ret = -EINVAL; + + if (dai->driver->ops && + dai->driver->ops->set_tristate) + ret = dai->driver->ops->set_tristate(dai, tristate); + + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate); + +/** + * snd_soc_dai_digital_mute - configure DAI system or master clock. + * @dai: DAI + * @mute: mute enable + * @direction: stream to mute + * + * Mutes the DAI DAC. + */ +int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute, + int direction) +{ + int ret = -ENOTSUPP; + + /* + * ignore if direction was CAPTURE + * and it had .no_capture_mute flag + */ + if (dai->driver->ops && + dai->driver->ops->mute_stream && + (direction == SNDRV_PCM_STREAM_PLAYBACK || + !dai->driver->ops->no_capture_mute)) + ret = dai->driver->ops->mute_stream(dai, mute, direction); + + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); + +int snd_soc_dai_hw_params(struct snd_soc_dai *dai, + struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + int ret = 0; + + /* perform any topology hw_params fixups before DAI */ + ret = snd_soc_link_be_hw_params_fixup(rtd, params); + if (ret < 0) + goto end; + + if (dai->driver->ops && + dai->driver->ops->hw_params) + ret = dai->driver->ops->hw_params(substream, params, dai); +end: + return soc_dai_ret(dai, ret); +} + +void snd_soc_dai_hw_free(struct snd_soc_dai *dai, + struct snd_pcm_substream *substream) +{ + if (dai->driver->ops && + dai->driver->ops->hw_free) + dai->driver->ops->hw_free(substream, dai); +} + +int snd_soc_dai_startup(struct snd_soc_dai *dai, + struct snd_pcm_substream *substream) +{ + int ret = 0; + + if (dai->driver->ops && + dai->driver->ops->startup) + ret = dai->driver->ops->startup(substream, dai); + + /* mark substream if succeeded */ + if (ret == 0) + soc_dai_mark_push(dai, substream, startup); + + return soc_dai_ret(dai, ret); +} + +void snd_soc_dai_shutdown(struct snd_soc_dai *dai, + struct snd_pcm_substream *substream, + int rollback) +{ + if (rollback && !soc_dai_mark_match(dai, substream, startup)) + return; + + if (dai->driver->ops && + dai->driver->ops->shutdown) + dai->driver->ops->shutdown(substream, dai); + + /* remove marked substream */ + soc_dai_mark_pop(dai, substream, startup); +} + +snd_pcm_sframes_t snd_soc_dai_delay(struct snd_soc_dai *dai, + struct snd_pcm_substream *substream) +{ + int delay = 0; + + if (dai->driver->ops && + dai->driver->ops->delay) + delay = dai->driver->ops->delay(substream, dai); + + return delay; +} + +int snd_soc_dai_compress_new(struct snd_soc_dai *dai, + struct snd_soc_pcm_runtime *rtd, int num) +{ + int ret = -ENOTSUPP; + if (dai->driver->compress_new) + ret = dai->driver->compress_new(rtd, num); + return soc_dai_ret(dai, ret); +} + +/* + * snd_soc_dai_stream_valid() - check if a DAI supports the given stream + * + * Returns true if the DAI supports the indicated stream type. + */ +bool snd_soc_dai_stream_valid(struct snd_soc_dai *dai, int dir) +{ + struct snd_soc_pcm_stream *stream = snd_soc_dai_get_pcm_stream(dai, dir); + + /* If the codec specifies any channels at all, it supports the stream */ + return stream->channels_min; +} + +/* + * snd_soc_dai_link_set_capabilities() - set dai_link properties based on its DAIs + */ +void snd_soc_dai_link_set_capabilities(struct snd_soc_dai_link *dai_link) +{ + struct snd_soc_dai_link_component *cpu; + struct snd_soc_dai_link_component *codec; + struct snd_soc_dai *dai; + bool supported[SNDRV_PCM_STREAM_LAST + 1]; + bool supported_cpu; + bool supported_codec; + int direction; + int i; + + for_each_pcm_streams(direction) { + supported_cpu = false; + supported_codec = false; + + for_each_link_cpus(dai_link, i, cpu) { + dai = snd_soc_find_dai_with_mutex(cpu); + if (dai && snd_soc_dai_stream_valid(dai, direction)) { + supported_cpu = true; + break; + } + } + for_each_link_codecs(dai_link, i, codec) { + dai = snd_soc_find_dai_with_mutex(codec); + if (dai && snd_soc_dai_stream_valid(dai, direction)) { + supported_codec = true; + break; + } + } + supported[direction] = supported_cpu && supported_codec; + } + + dai_link->dpcm_playback = supported[SNDRV_PCM_STREAM_PLAYBACK]; + dai_link->dpcm_capture = supported[SNDRV_PCM_STREAM_CAPTURE]; +} +EXPORT_SYMBOL_GPL(snd_soc_dai_link_set_capabilities); + +void snd_soc_dai_action(struct snd_soc_dai *dai, + int stream, int action) +{ + /* see snd_soc_dai_stream_active() */ + dai->stream_active[stream] += action; + + /* see snd_soc_component_active() */ + dai->component->active += action; +} +EXPORT_SYMBOL_GPL(snd_soc_dai_action); + +int snd_soc_dai_active(struct snd_soc_dai *dai) +{ + int stream, active; + + active = 0; + for_each_pcm_streams(stream) + active += dai->stream_active[stream]; + + return active; +} +EXPORT_SYMBOL_GPL(snd_soc_dai_active); + +int snd_soc_pcm_dai_probe(struct snd_soc_pcm_runtime *rtd, int order) +{ + struct snd_soc_dai *dai; + int i; + + for_each_rtd_dais(rtd, i, dai) { + if (dai->driver->probe_order != order) + continue; + + if (dai->driver->probe) { + int ret = dai->driver->probe(dai); + + if (ret < 0) + return soc_dai_ret(dai, ret); + } + + dai->probed = 1; + } + + return 0; +} + +int snd_soc_pcm_dai_remove(struct snd_soc_pcm_runtime *rtd, int order) +{ + struct snd_soc_dai *dai; + int i, r, ret = 0; + + for_each_rtd_dais(rtd, i, dai) { + if (dai->driver->remove_order != order) + continue; + + if (dai->probed && + dai->driver->remove) { + r = dai->driver->remove(dai); + if (r < 0) + ret = r; /* use last error */ + } + + dai->probed = 0; + } + + return ret; +} + +int snd_soc_pcm_dai_new(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_dai *dai; + int i, ret = 0; + + for_each_rtd_dais(rtd, i, dai) { + if (dai->driver->pcm_new) { + ret = dai->driver->pcm_new(rtd, dai); + if (ret < 0) + return soc_dai_ret(dai, ret); + } + } + + return 0; +} + +int snd_soc_pcm_dai_prepare(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct snd_soc_dai *dai; + int i, ret; + + for_each_rtd_dais(rtd, i, dai) { + if (dai->driver->ops && + dai->driver->ops->prepare) { + ret = dai->driver->ops->prepare(substream, dai); + if (ret < 0) + return soc_dai_ret(dai, ret); + } + } + + return 0; +} + +int snd_soc_pcm_dai_trigger(struct snd_pcm_substream *substream, + int cmd) +{ + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct snd_soc_dai *dai; + int i, ret; + + for_each_rtd_dais(rtd, i, dai) { + if (dai->driver->ops && + dai->driver->ops->trigger) { + ret = dai->driver->ops->trigger(substream, cmd, dai); + if (ret < 0) + return soc_dai_ret(dai, ret); + } + } + + return 0; +} + +int snd_soc_pcm_dai_bespoke_trigger(struct snd_pcm_substream *substream, + int cmd) +{ + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct snd_soc_dai *dai; + int i, ret; + + for_each_rtd_dais(rtd, i, dai) { + if (dai->driver->ops && + dai->driver->ops->bespoke_trigger) { + ret = dai->driver->ops->bespoke_trigger(substream, + cmd, dai); + if (ret < 0) + return soc_dai_ret(dai, ret); + } + } + + return 0; +} + +int snd_soc_dai_compr_startup(struct snd_soc_dai *dai, + struct snd_compr_stream *cstream) +{ + int ret = 0; + + if (dai->driver->cops && + dai->driver->cops->startup) + ret = dai->driver->cops->startup(cstream, dai); + + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_compr_startup); + +void snd_soc_dai_compr_shutdown(struct snd_soc_dai *dai, + struct snd_compr_stream *cstream) +{ + if (dai->driver->cops && + dai->driver->cops->shutdown) + dai->driver->cops->shutdown(cstream, dai); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_compr_shutdown); + +int snd_soc_dai_compr_trigger(struct snd_soc_dai *dai, + struct snd_compr_stream *cstream, int cmd) +{ + int ret = 0; + + if (dai->driver->cops && + dai->driver->cops->trigger) + ret = dai->driver->cops->trigger(cstream, cmd, dai); + + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_compr_trigger); + +int snd_soc_dai_compr_set_params(struct snd_soc_dai *dai, + struct snd_compr_stream *cstream, + struct snd_compr_params *params) +{ + int ret = 0; + + if (dai->driver->cops && + dai->driver->cops->set_params) + ret = dai->driver->cops->set_params(cstream, params, dai); + + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_compr_set_params); + +int snd_soc_dai_compr_get_params(struct snd_soc_dai *dai, + struct snd_compr_stream *cstream, + struct snd_codec *params) +{ + int ret = 0; + + if (dai->driver->cops && + dai->driver->cops->get_params) + ret = dai->driver->cops->get_params(cstream, params, dai); + + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_compr_get_params); + +int snd_soc_dai_compr_ack(struct snd_soc_dai *dai, + struct snd_compr_stream *cstream, + size_t bytes) +{ + int ret = 0; + + if (dai->driver->cops && + dai->driver->cops->ack) + ret = dai->driver->cops->ack(cstream, bytes, dai); + + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_compr_ack); + +int snd_soc_dai_compr_pointer(struct snd_soc_dai *dai, + struct snd_compr_stream *cstream, + struct snd_compr_tstamp *tstamp) +{ + int ret = 0; + + if (dai->driver->cops && + dai->driver->cops->pointer) + ret = dai->driver->cops->pointer(cstream, tstamp, dai); + + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_compr_pointer); + +int snd_soc_dai_compr_set_metadata(struct snd_soc_dai *dai, + struct snd_compr_stream *cstream, + struct snd_compr_metadata *metadata) +{ + int ret = 0; + + if (dai->driver->cops && + dai->driver->cops->set_metadata) + ret = dai->driver->cops->set_metadata(cstream, metadata, dai); + + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_compr_set_metadata); + +int snd_soc_dai_compr_get_metadata(struct snd_soc_dai *dai, + struct snd_compr_stream *cstream, + struct snd_compr_metadata *metadata) +{ + int ret = 0; + + if (dai->driver->cops && + dai->driver->cops->get_metadata) + ret = dai->driver->cops->get_metadata(cstream, metadata, dai); + + return soc_dai_ret(dai, ret); +} +EXPORT_SYMBOL_GPL(snd_soc_dai_compr_get_metadata); |