Specifications

• alt_fs_reg() on page 14-29

alt_dma_rxchan_open()

Prototype

alt_dma_rxchan alt_dma_rxchan_open (const char* name)

Commonly Called By

C/C++ programs

Device drivers

Thread-safe

Yes.

Available from ISR

No.

Include

Description

The alt_dma_rxchan_open() function obtains an alt_dma_rxchan descriptor for a DMA receive

channel. The input argument, name, is the name of the associated physical device, for example, /dev/

dma_0.

Return

The return value is null on failure and non-null otherwise. If an error occurs, errno is set to ENODEV.

Related Information

• alt_dma_rxchan_close() on page 14-13

• alt_dma_rxchan_depth() on page 14-12

• alt_dma_rxchan_prepare() on page 14-16

• alt_dma_rxchan_reg() on page 14-17

• alt_dma_txchan_close() on page 14-18

• alt_dma_txchan_ioctl() on page 14-19

• alt_dma_txchan_open() on page 14-20

• alt_dma_txchan_reg() on page 14-21

• alt_dma_txchan_send() on page 14-27

• alt_dma_txchan_space() on page 14-26

NII5V2

2015.05.14

alt_dma_rxchan_open()

14-15

HAL API Reference

Altera Corporation

Send Feedback