aasrc_ch.h File Reference

Introduction

AASRC channel related parameters and API.

Go to the source code of this file.

Data Structures
struct	AASRC_ChLockObj
	AASRC Channel lock semaphore structure. More...
struct	AASRC_FifoCfg
	Hardware FIFO setup structure. More...
struct	AASRC_FifoErrorStatus
	Hardware FIFO setup structure. More...
struct	AASRC_ChStatus
	AASRC channel status register. More...
struct	AASRC_ChCfg
	AASRC configuration parameters for the channel. More...
struct	AASRC_ClockZoneConfig
	Hardware setup clock zones. More...
struct	AASRC_ChClkCfg
	AASRC Channel Clock Config. More...
struct	AASRC_ChObj
	AASRC Channel object. More...

Macros
#define	AASRC_DEFAULT_IN_FIFO_THRESHOLD   (16U)
	Default Input fifo threshold. More...
#define	AASRC_DEFAULT_OUT_FIFO_THRESHOLD   (16U)
	Default Output fifo threshold. More...
#define	AASRC_MAX_IN_FIFO_THRESHOLD   (32U)
	Max Input fifo threshold. More...
#define	AASRC_MAX_OUT_FIFO_THRESHOLD   (16U)
	Max Output fifo threshold. More...
#define	AASRC_MAX_ATTENUATION   (255U)
	AASRC maximum attenuation setting. More...
#define	AASRC_MAX_DEEMPHASIS_MODES   (4U)
	AASRC maximum number of de-emphasis modes. More...
#define	AASRC_SRC_FIFO_CONTROL_REG_OFFSET   (0x00000010U)
	SRC Fifo control register offset. More...
#define	AASRC_SRC_FIFO_CONTROL(x)
	Find base address of SRC 'x' Fifo Control Register. More...
#define	AASRC_SRC_CONTROL_REG_OFFSET   (0x00000010U)
	SRC control register offset. More...
#define	AASRC_SRC_CONTROL(x)
	Find base address of SRC 'x' Control Register. More...
#define	AASRC_SRC_STATUS_REG_OFFSET   (0x00000010U)
	SRC status register offset. More...
#define	AASRC_SRC_STATUS(x)
	Find base address of SRC 'x' Status Register. More...
#define	AASRC_GROUP_FIFO_CONTROL_REG_OFFSET   (0x00000008U)
	SRC Group fifo control register offset. More...
#define	AASRC_GROUP_FIFO_CONTROL(x)
	Find base address of Group 'x' Fifo Control Register. More...
#define	AASRC_GROUP_SRC_CONTROL_REG_OFFSET   (0x00000008U)
	SRC Group control register offset. More...
#define	AASRC_GROUP_SRC_CONTROL(x)
	Find base address of Group 'x' Control Register. More...
#define	AASRC_GROUP_SELECT_REG_OFFSET   (0x00000004U)
	SRC Group select register offset. More...
#define	AASRC_INPUT_GROUP_SELECT(x)
	Find base address of Input Group 'x' Select Register. More...
#define	AASRC_OUTPUT_GROUP_SELECT(x)
	Find base address of Output Group 'x' Select Register. More...
AASRC Channel Id
Values used to determine the channel number used for AASRC communication. This determines which ASRC channel to use.
#define	AASRC_CHANNEL_0   (0U)
#define	AASRC_CHANNEL_1   (1U)
#define	AASRC_CHANNEL_2   (2U)
#define	AASRC_CHANNEL_3   (3U)
#define	AASRC_CHANNEL_4   (4U)
#define	AASRC_CHANNEL_5   (5U)
#define	AASRC_CHANNEL_6   (6U)
#define	AASRC_CHANNEL_7   (7U)
AASRC Group Id
This represents the number of channel groups available in the AASRC IPs. Max number of groups in the chip is SOC dependent.
#define	AASRC_GROUP0   (0U)
#define	AASRC_GROUP1   (1U)
#define	AASRC_GROUP2   (2U)
#define	AASRC_GROUP3   (3U)
AASRC Data Length
AASRC allowed sample word length
#define	AASRC_SAMPLE_WORD_LENGTH_24   (24U)
#define	AASRC_SAMPLE_WORD_LENGTH_20   (20U)
#define	AASRC_SAMPLE_WORD_LENGTH_18   (18U)
#define	AASRC_SAMPLE_WORD_LENGTH_16   (16U)
AASRC Group Delay
Interpolation filter group delay supported by AASRC. This represents the number of samples which are prebuffered prior to the re-sampler function.
#define	AASRC_GROUP_DELAY_64   (64U)
#define	AASRC_GROUP_DELAY_32   (32U)
#define	AASRC_GROUP_DELAY_16   (16U)
#define	AASRC_GROUP_DELAY_8   (8U)

Functions
AASRC_ChHandle	AASRC_chOpen (uint8_t chIdx, AASRC_Handle drvHandle)
	Function to allocate a required ASRC channel. More...
AASRC_ChHandle	AASRC_getChHandle (uint8_t instIdx, uint8_t chIdx)
	This function returns the handle of an open AASRC Channel from the instance index & channel index. More...
int32_t	AASRC_chConfigInit (AASRC_ChHandle chHandle)
	Function initialize AASRC_ChCfg. More...
int32_t	AASRC_chConfig (AASRC_ChHandle chHandle)
	Function to configure ASRC channels. More...
int32_t	AASRC_chEnable (AASRC_ChHandle chHandle)
	AASRC channel enable. More...
int32_t	AASRC_chDisable (AASRC_ChHandle chHandle)
	AASRC channel disable. More...
int32_t	AASRC_isChEnabled (AASRC_ChHandle chHandle, uint32_t *isEnabled)
	is ASRC channel enabled More...
int32_t	AASRC_chClose (AASRC_ChHandle chHandle)
	AASRC channel close. More...

Variables
AASRC_ChObj *	gConfigAasrcChObj []
	Externally defined driver configuration array. More...
AASRC_ChLockObj	gAasrcChLockObj
	AASRC Channel lock object. More...