gap8/pmsis/include/pmsis/implem/drivers/udma/i2s/i2s_internal.h File Reference

Data Structures
struct	i2s_itf_data_s

Functions
void	__pi_i2s_conf_init (struct pi_i2s_conf *conf)
	Init i2s configuration structure. More...
int32_t	__pi_i2s_open (struct pi_i2s_conf *conf, struct i2s_itf_data_s **device_data)
	Open i2s device. More...
void	__pi_i2s_close (struct i2s_itf_data_s *itf_data)
	Close i2s device. More...
int32_t	__pi_i2s_ioctl (struct i2s_itf_data_s *itf_data, uint32_t cmd, void *arg)
	Ioctl function. More...
int32_t	__pi_i2s_read_async (struct i2s_itf_data_s *itf_data, pi_task_t *task)
	Load data from micro. More...
int32_t	__pi_i2s_read_status (pi_task_t *task, void **mem_block, size_t *size)
	Return status. More...
void	__pi_i2s_setup (uint32_t flags)
	Setup misc flags. More...

Function Documentation

void __pi_i2s_close

(

struct i2s_itf_data_s *

itf_data

)

Parameters

i2s_id

ID of i2s interface.

void __pi_i2s_conf_init

(

struct pi_i2s_conf *

conf

)

Parameters

conf	Pointer to i2s conf.

int32_t __pi_i2s_ioctl	(	struct i2s_itf_data_s *	itf_data,
		uint32_t	cmd,
		void *	arg
	)

Parameters

i2s_id	ID of i2s interface.
cmd	Ioctl command.
arg	Ioctl argument.

Return values

-1	Uknown command.
Value	Ioctl command return value.

int32_t __pi_i2s_open	(	struct pi_i2s_conf *	conf,
		struct i2s_itf_data_s **	device_data
	)

Parameters

conf	Pointer to i2s conf.
device_data	Pointer to device data.

Return values

0	Operation is successful.
ERRNO	Error code.

int32_t __pi_i2s_read_async	(	struct i2s_itf_data_s *	itf_data,
		pi_task_t *	task
	)

Parameters

itf_data	Pointer to driver data.
task	Pointer to struct pi_task.

References __pi_i2s_pop(), __pi_irq_handle_end_of_task(), i2s_itf_data_s::block_size, i2s_itf_data_s::cur_read_buffer, pi_task_t::data, disable_irq(), i2s_itf_data_s::fifo_head, i2s_itf_data_s::fifo_tail, i2s_itf_data_s::nb_ready_buffer, pi_task_t::next, i2s_itf_data_s::options, i2s_itf_data_s::pingpong_buffers, and restore_irq().

Referenced by pi_i2s_read_async().

int32_t __pi_i2s_read_status	(	pi_task_t *	task,
		void **	mem_block,
		size_t *	size
	)

Parameters

task	Pointer to struct pi_task.
mem_block	Pointer to data buffer.
size	Pointer to size.

void __pi_i2s_setup

(

uint32_t

flags

)

Parameters

flags

Flags to set.

References g_i2s_flags.

Referenced by pi_i2s_setup().