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/* SPDX-License-Identifier: GPL-2.0 * * linux/sound/soc-dai.h -- ALSA SoC Layer * * Copyright: 2005-2008 Wolfson Microelectronics. PLC. * * Digital Audio Interface (DAI) API. / #ifndef __LINUX_SND_SOC_DAI_H #define __LINUX_SND_SOC_DAI_H #include <linux/list.h> #include <sound/asoc.h> struct snd_pcm_substream; struct snd_soc_dapm_widget; struct snd_compr_stream; / * DAI hardware audio formats. * * Describes the physical PCM data formating and clocking. Add new formats * to the end. / #define SND_SOC_DAIFMT_I2S SND_SOC_DAI_FORMAT_I2S #define SND_SOC_DAIFMT_RIGHT_J SND_SOC_DAI_FORMAT_RIGHT_J #define SND_SOC_DAIFMT_LEFT_J SND_SOC_DAI_FORMAT_LEFT_J #define SND_SOC_DAIFMT_DSP_A SND_SOC_DAI_FORMAT_DSP_A #define SND_SOC_DAIFMT_DSP_B SND_SOC_DAI_FORMAT_DSP_B #define SND_SOC_DAIFMT_AC97 SND_SOC_DAI_FORMAT_AC97 #define SND_SOC_DAIFMT_PDM SND_SOC_DAI_FORMAT_PDM / left and right justified also known as MSB and LSB respectively / #define SND_SOC_DAIFMT_MSB SND_SOC_DAIFMT_LEFT_J #define SND_SOC_DAIFMT_LSB SND_SOC_DAIFMT_RIGHT_J / * DAI Clock gating. * * DAI bit clocks can be be gated (disabled) when the DAI is not * sending or receiving PCM data in a frame. This can be used to save power. / #define SND_SOC_DAIFMT_CONT (1 << 4) / continuous clock / #define SND_SOC_DAIFMT_GATED (0 << 4) / clock is gated / / * DAI hardware signal polarity. * * Specifies whether the DAI can also support inverted clocks for the specified * format. * * BCLK: * - "normal" polarity means signal is available at rising edge of BCLK * - "inverted" polarity means signal is available at falling edge of BCLK * * FSYNC "normal" polarity depends on the frame format: * - I2S: frame consists of left then right channel data. Left channel starts * with falling FSYNC edge, right channel starts with rising FSYNC edge. * - Left/Right Justified: frame consists of left then right channel data. * Left channel starts with rising FSYNC edge, right channel starts with * falling FSYNC edge. * - DSP A/B: Frame starts with rising FSYNC edge. * - AC97: Frame starts with rising FSYNC edge. * * "Negative" FSYNC polarity is the one opposite of "normal" polarity. / #define SND_SOC_DAIFMT_NB_NF (0 << 8) / normal bit clock + frame / #define SND_SOC_DAIFMT_NB_IF (2 << 8) / normal BCLK + inv FRM / #define SND_SOC_DAIFMT_IB_NF (3 << 8) / invert BCLK + nor FRM / #define SND_SOC_DAIFMT_IB_IF (4 << 8) / invert BCLK + FRM / / * DAI hardware clock masters. * * This is wrt the codec, the inverse is true for the interface * i.e. if the codec is clk and FRM master then the interface is * clk and frame slave. / #define SND_SOC_DAIFMT_CBM_CFM (1 << 12) / codec clk & FRM master / #define SND_SOC_DAIFMT_CBS_CFM (2 << 12) / codec clk slave & FRM master / #define SND_SOC_DAIFMT_CBM_CFS (3 << 12) / codec clk master & frame slave / #define SND_SOC_DAIFMT_CBS_CFS (4 << 12) / codec clk & FRM slave / #define SND_SOC_DAIFMT_FORMAT_MASK 0x000f #define SND_SOC_DAIFMT_CLOCK_MASK 0x00f0 #define SND_SOC_DAIFMT_INV_MASK 0x0f00 #define SND_SOC_DAIFMT_MASTER_MASK 0xf000 / * Master Clock Directions / #define SND_SOC_CLOCK_IN 0 #define SND_SOC_CLOCK_OUT 1 #define SND_SOC_STD_AC97_FMTS (SNDRV_PCM_FMTBIT_S8 \|\ SNDRV_PCM_FMTBIT_S16_LE \|\ SNDRV_PCM_FMTBIT_S16_BE \|\ SNDRV_PCM_FMTBIT_S20_3LE \|\ SNDRV_PCM_FMTBIT_S20_3BE \|\ SNDRV_PCM_FMTBIT_S20_LE \|\ SNDRV_PCM_FMTBIT_S20_BE \|\ SNDRV_PCM_FMTBIT_S24_3LE \|\ SNDRV_PCM_FMTBIT_S24_3BE \|\ SNDRV_PCM_FMTBIT_S32_LE \|\ SNDRV_PCM_FMTBIT_S32_BE) struct snd_soc_dai_driver; struct snd_soc_dai; struct snd_ac97_bus_ops; / Digital Audio Interface clocking API./ int snd_soc_dai_set_sysclk(struct snd_soc_dai dai, int clk_id, unsigned int freq, int dir); int snd_soc_dai_set_clkdiv(struct snd_soc_dai dai, int div_id, int div); 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 snd_soc_dai_set_bclk_ratio(struct snd_soc_dai dai, unsigned int ratio); / Digital Audio interface formatting / int snd_soc_dai_set_fmt(struct snd_soc_dai dai, unsigned int fmt); 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 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 snd_soc_dai_set_tristate(struct snd_soc_dai dai, int tristate); / Digital Audio Interface mute / int snd_soc_dai_digital_mute(struct snd_soc_dai dai, int mute, int direction); 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 snd_soc_dai_is_dummy(struct snd_soc_dai dai); int snd_soc_dai_hw_params(struct snd_soc_dai dai, struct snd_pcm_substream substream, struct snd_pcm_hw_params params); void snd_soc_dai_hw_free(struct snd_soc_dai dai, struct snd_pcm_substream substream); int snd_soc_dai_startup(struct snd_soc_dai dai, struct snd_pcm_substream substream); void snd_soc_dai_shutdown(struct snd_soc_dai dai, struct snd_pcm_substream substream); int snd_soc_dai_prepare(struct snd_soc_dai dai, struct snd_pcm_substream substream); int snd_soc_dai_trigger(struct snd_soc_dai dai, struct snd_pcm_substream substream, int cmd); int snd_soc_dai_bespoke_trigger(struct snd_soc_dai dai, struct snd_pcm_substream substream, int cmd); snd_pcm_sframes_t snd_soc_dai_delay(struct snd_soc_dai dai, struct snd_pcm_substream substream); void snd_soc_dai_suspend(struct snd_soc_dai dai); void snd_soc_dai_resume(struct snd_soc_dai dai); int snd_soc_dai_probe(struct snd_soc_dai dai); int snd_soc_dai_remove(struct snd_soc_dai dai); int snd_soc_dai_compress_new(struct snd_soc_dai dai, struct snd_soc_pcm_runtime rtd, int num); bool snd_soc_dai_stream_valid(struct snd_soc_dai dai, int stream); struct snd_soc_dai_ops { /* * DAI clocking configuration, all optional. * Called by soc_card drivers, normally in their hw_params. / int (set_sysclk)(struct snd_soc_dai dai, int clk_id, unsigned int freq, int dir); int (set_pll)(struct snd_soc_dai dai, int pll_id, int source, unsigned int freq_in, unsigned int freq_out); int (set_clkdiv)(struct snd_soc_dai dai, int div_id, int div); int (set_bclk_ratio)(struct snd_soc_dai dai, unsigned int ratio); / * DAI format configuration * Called by soc_card drivers, normally in their hw_params. / int (set_fmt)(struct snd_soc_dai dai, unsigned int fmt); int (xlate_tdm_slot_mask)(unsigned int slots, unsigned int tx_mask, unsigned int rx_mask); int (set_tdm_slot)(struct snd_soc_dai dai, unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width); int (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 (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 (set_tristate)(struct snd_soc_dai dai, int tristate); int (set_sdw_stream)(struct snd_soc_dai dai, void stream, int direction); / * DAI digital mute - optional. * Called by soc-core to minimise any pops. / int (digital_mute)(struct snd_soc_dai dai, int mute); int (mute_stream)(struct snd_soc_dai dai, int mute, int stream); / * ALSA PCM audio operations - all optional. * Called by soc-core during audio PCM operations. / int (startup)(struct snd_pcm_substream , struct snd_soc_dai ); void (shutdown)(struct snd_pcm_substream , struct snd_soc_dai ); int (hw_params)(struct snd_pcm_substream , struct snd_pcm_hw_params , struct snd_soc_dai ); int (hw_free)(struct snd_pcm_substream , struct snd_soc_dai ); int (prepare)(struct snd_pcm_substream , struct snd_soc_dai ); / * NOTE: Commands passed to the trigger function are not necessarily * compatible with the current state of the dai. For example this * sequence of commands is possible: START STOP STOP. * So do not unconditionally use refcounting functions in the trigger * function, e.g. clk_enable/disable. / int (trigger)(struct snd_pcm_substream , int, struct snd_soc_dai ); int (bespoke_trigger)(struct snd_pcm_substream , int, struct snd_soc_dai ); / * For hardware based FIFO caused delay reporting. * Optional. / snd_pcm_sframes_t (delay)(struct snd_pcm_substream , struct snd_soc_dai ); }; struct snd_soc_cdai_ops { /* * for compress ops / int (startup)(struct snd_compr_stream , struct snd_soc_dai ); int (shutdown)(struct snd_compr_stream , struct snd_soc_dai ); int (set_params)(struct snd_compr_stream , struct snd_compr_params , struct snd_soc_dai ); int (get_params)(struct snd_compr_stream , struct snd_codec , struct snd_soc_dai ); int (set_metadata)(struct snd_compr_stream , struct snd_compr_metadata , struct snd_soc_dai ); int (get_metadata)(struct snd_compr_stream , struct snd_compr_metadata , struct snd_soc_dai ); int (trigger)(struct snd_compr_stream , int, struct snd_soc_dai ); int (pointer)(struct snd_compr_stream , struct snd_compr_tstamp , struct snd_soc_dai ); int (ack)(struct snd_compr_stream , size_t, struct snd_soc_dai ); }; / * Digital Audio Interface Driver. * * Describes the Digital Audio Interface in terms of its ALSA, DAI and AC97 * operations and capabilities. Codec and platform drivers will register this * structure for every DAI they have. * * This structure covers the clocking, formating and ALSA operations for each * interface. / struct snd_soc_dai_driver { / DAI description / const char name; unsigned int id; unsigned int base; struct snd_soc_dobj dobj; /* DAI driver callbacks / int (probe)(struct snd_soc_dai dai); int (remove)(struct snd_soc_dai dai); int (suspend)(struct snd_soc_dai dai); int (resume)(struct snd_soc_dai dai); / compress dai / int (compress_new)(struct snd_soc_pcm_runtime rtd, int num); / Optional Callback used at pcm creation/ int (pcm_new)(struct snd_soc_pcm_runtime rtd, struct snd_soc_dai dai); /* ops / const struct snd_soc_dai_ops ops; const struct snd_soc_cdai_ops cops; / DAI capabilities / struct snd_soc_pcm_stream capture; struct snd_soc_pcm_stream playback; unsigned int symmetric_rates:1; unsigned int symmetric_channels:1; unsigned int symmetric_samplebits:1; unsigned int bus_control:1; / DAI is also used for the control bus / / probe ordering - for components with runtime dependencies / int probe_order; int remove_order; }; / * Digital Audio Interface runtime data. * * Holds runtime data for a DAI. / struct snd_soc_dai { const char name; int id; struct device dev; / driver ops / struct snd_soc_dai_driver driver; /* DAI runtime info / unsigned int capture_active; / stream usage count / unsigned int playback_active; / stream usage count / unsigned int probed:1; unsigned int active; struct snd_soc_dapm_widget playback_widget; struct snd_soc_dapm_widget capture_widget; / DAI DMA data / void playback_dma_data; void capture_dma_data; / Symmetry data - only valid if symmetry is being enforced / unsigned int rate; unsigned int channels; unsigned int sample_bits; / parent platform/codec / struct snd_soc_component component; /* CODEC TDM slot masks and params (for fixup) / unsigned int tx_mask; unsigned int rx_mask; struct list_head list; }; static inline void snd_soc_dai_get_dma_data(const struct snd_soc_dai dai, const struct snd_pcm_substream ss) { return (ss->stream == SNDRV_PCM_STREAM_PLAYBACK) ? dai->playback_dma_data : dai->capture_dma_data; } static inline void snd_soc_dai_set_dma_data(struct snd_soc_dai dai, const struct snd_pcm_substream ss, void data) { if (ss->stream == SNDRV_PCM_STREAM_PLAYBACK) dai->playback_dma_data = data; else dai->capture_dma_data = data; } static inline void snd_soc_dai_init_dma_data(struct snd_soc_dai dai, void playback, void capture) { dai->playback_dma_data = playback; dai->capture_dma_data = capture; } static inline void snd_soc_dai_set_drvdata(struct snd_soc_dai dai, void data) { dev_set_drvdata(dai->dev, data); } static inline void snd_soc_dai_get_drvdata(struct snd_soc_dai dai) { return dev_get_drvdata(dai->dev); } /** * snd_soc_dai_set_sdw_stream() - Configures a DAI for SDW stream operation * @dai: DAI * @stream: STREAM * @direction: Stream direction(Playback/Capture) * SoundWire subsystem doesn't have a notion of direction and we reuse * the ASoC stream direction to configure sink/source ports. * Playback maps to source ports and Capture for sink ports. * * This should be invoked with NULL to clear the stream set previously. * Returns 0 on success, a negative error code otherwise. / static inline int snd_soc_dai_set_sdw_stream(struct snd_soc_dai dai, void *stream, int direction) { if (dai->driver->ops->set_sdw_stream) return dai->driver->ops->set_sdw_stream(dai, stream, direction); else return -ENOTSUPP; } #endif

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