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Mcbsp channel Object. More...
#include <mcbsp_pvt.h>
Data Fields | |
| uint16_t | mode |
| Mcbsp_DriverState | chanState |
| Mcbsp_Object * | devHandle |
| Mcbsp_CallbackFxn | cbFxn |
| void * | cbArg |
| void * | edmaHandle |
| uint32_t | edmaEventQue |
| EDMA3_RM_TccCallback | edmaCallback |
| uint32_t | xferChan |
| uint32_t | tcc |
| uint32_t | pramTbl [Mcbsp_MAXLINKCNT] |
| uint32_t | pramTblAddr [Mcbsp_MAXLINKCNT] |
| void * | ptrQPendList |
| void * | ptrQFloatList |
| Mcbsp_IOBuf * | tempIOBuf |
| Mcbsp_IOBuf * | dataIOBuf |
| uint32_t | submitCount |
| Mcbsp_BufferFormat | dataFormat |
| Bool | nextFlag |
| volatile Bool | bMuteON |
| volatile Bool | paused |
| volatile Bool | flush |
| volatile Bool | isTempIOBufValid |
| Bool | enableHwFifo |
| Mcbsp_GblErrCallback | gblErrCbk |
| uint32_t | userDataBufferSize |
| void * | loopJobBuffer |
| uint16_t | loopJobLength |
| uint32_t | userLoopJobLength |
| uint32_t | nextLinkParamSetToBeUpdated |
| volatile Bool | loopjobUpdatedinParamset |
| uint16_t | roundedWordWidth |
| uint16_t | currentDataSize |
| Mcbsp_DataConfig | chanConfig |
| Mcbsp_ClkSetup | clkSetup |
| Mcbsp_McrSetup | multiChanCtrl |
| uint32_t | chanEnableMask [4] |
| Bool | userLoopJob |
| int32_t | currentError |
Mcbsp channel Object.
This structure maintains the current channel state. It also holds information on DMA channel being used and holds the application callback function to be called in case of an interrupt.
This structure is initialized by mdCreateChan and a pointer to this is passed down to all other channel related functions. Lifetime of the data structure is from its creation by mdCreateChan till it is invalidated by mdDeleteChan.each instance object will have two channel object one for TX and one for the RX channel.
| volatile Bool Mcbsp_ChannelObj_t::bMuteON |
Flag to set the mute ON/OFF status
Callback Function argument
Driver call back function to be called once a I/O buffer is processed
settings to configure the TX or RX hardware sections
| uint32_t Mcbsp_ChannelObj_t::chanEnableMask[4] |
Mask of the channels to be enabled or disabled
operational state of the channel (opened/closed)
clock setup for the RX or the TX section
| uint16_t Mcbsp_ChannelObj_t::currentDataSize |
data buffer size of the currently transferring buffer
| int32_t Mcbsp_ChannelObj_t::currentError |
Current I/O buffer error status
Application supplied buffer format
Temporary I/O buffer holder used to load the next buffer in to EDMA
| Mcbsp_Object* Mcbsp_ChannelObj_t::devHandle |
Pointer to McBSP device driver instance object
| EDMA3_RM_TccCallback Mcbsp_ChannelObj_t::edmaCallback |
Edma callback function pointer
| uint32_t Mcbsp_ChannelObj_t::edmaEventQue |
EDMA event queue to be used by the channel
Handle to the EDMA3 driver(given by application)
whether the FIFO has to be enabled for this channel
| volatile Bool Mcbsp_ChannelObj_t::flush |
Flag to indicate if the Driver IO request flush is set
Callback to called in case an error occurs(supplied by application)
| volatile Bool Mcbsp_ChannelObj_t::isTempIOBufValid |
Flag to indicate whether a valid buffer is available in tempIOBuf
Buffer to be transferred when the loop job is running
| uint16_t Mcbsp_ChannelObj_t::loopJobLength |
Length of userloop job for each serialiser
| volatile Bool Mcbsp_ChannelObj_t::loopjobUpdatedinParamset |
Used to prevent updating second paramset with loopjob for * last dataIOBuf edma callback
| uint16_t Mcbsp_ChannelObj_t::mode |
Mode of operation of the channel (MCBSP_MODE_INPUT or MCBSP_MODE_OUTPUT)
multiple channel control settings
Flag to indicate if the state machine can be stopped or not
Used to store the next index of link param to be updated
| volatile Bool Mcbsp_ChannelObj_t::paused |
Flag to indicate if the audio is paused or not
| uint32_t Mcbsp_ChannelObj_t::pramTbl[Mcbsp_MAXLINKCNT] |
Logical channel numbers of EDMA, which are used for linking
| uint32_t Mcbsp_ChannelObj_t::pramTblAddr[Mcbsp_MAXLINKCNT] |
Physical address of logical channel numbers of EDMA, which * are used for linking
Queue to manage floating I/O buffers in DMA
Queue to hold the pending I/O buffers received from the application
| uint16_t Mcbsp_ChannelObj_t::roundedWordWidth |
Word length bytes to be transferred for DMA transaction
| uint32_t Mcbsp_ChannelObj_t::submitCount |
Number of submit calls pending in the driver
| uint32_t Mcbsp_ChannelObj_t::tcc |
EDMA transfer completion code
Temporary I/O buffer holder
Size of the data buffer to be transferred
Option to indicate if the user loop job is used or driver loop job
user specified loop job length to be used if supplied
| uint32_t Mcbsp_ChannelObj_t::xferChan |
eDMA ChannelID