dmic.h File Reference

IPC4 Digital Microphone (DMIC) gateway and PDM controller configuration. More...

Include dependency graph for dmic.h:

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Data Structures
union	dmic_global_cfg
	Global hardware configuration for DMIC controller. More...
struct	dmic_channel_cfg
	Configuration parameters for a single DMIC channel. More...
struct	dmic_fir_cfg
	Finite Impulse Response (FIR) decimation filter configuration. More...
struct	dmic_pdm_ctrl_cfg
	Pulse Density Modulation (PDM) controller configuration for DMIC. More...
struct	dmic_config_blob
	Complete configuration blob for Digital Microphone (DMIC) settings. More...
struct	dmic_config_data
	Top-level DMIC configuration data container. More...

Macros
#define	DMIC_SET_GAIN_COEFFICIENTS   2
	IOCTL command ID for DMIC set gain coefficients.
#define	DMIC_MAX_GAIN_COEFFS_CNT   4
	Maximum number of DMIC gain coefficients.

Detailed Description

IPC4 Digital Microphone (DMIC) gateway and PDM controller configuration.

NOTE: This ABI uses bit fields and is non portable.

Macro Definition Documentation

DMIC_MAX_GAIN_COEFFS_CNT

#define DMIC_MAX_GAIN_COEFFS_CNT   4

Maximum number of DMIC gain coefficients.

DMIC_SET_GAIN_COEFFICIENTS

#define DMIC_SET_GAIN_COEFFICIENTS   2

IOCTL command ID for DMIC set gain coefficients.