gap8/pmsis/drivers/udma/i2s/i2s_internal.c File Reference

Functions
static void	__pi_i2s_handler (void *arg)
static void	__pi_i2s_resume (struct i2s_itf_data_s *itf_data)
static void	__pi_i2s_suspend (struct i2s_itf_data_s *itf_data)
static uint8_t	__pi_i2s_enqueue (struct i2s_itf_data_s *itf_data)
static void *	__pi_i2s_pop (struct i2s_itf_data_s *itf_data)
static int32_t	__pi_i2s_conf_apply (struct i2s_itf_data_s *itf_data)
static int32_t	__pi_i2s_conf_set (struct i2s_itf_data_s *itf_data, struct pi_i2s_conf *conf)
static void	__pi_i2s_conf_get (struct i2s_itf_data_s *itf_data, struct pi_i2s_conf *conf)
static void	__pi_i2s_clock_enable (struct i2s_itf_data_s *itf_data)
static void	__pi_i2s_clock_disable (struct i2s_itf_data_s *itf_data)
static uint32_t	__pi_i2s_clk_div (uint32_t i2s_freq)
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...

Variables
static uint32_t	g_i2s_flags
struct i2s_itf_data_s *	g_i2s_itf_data [UDMA_NB_I2S<< 1]

Function Documentation

static uint32_t __pi_i2s_clk_div ( uint32_t  i2s_freq )

inlinestatic

References I2S_TRACE, I2S_TRACE_ERR, and pi_freq_get().

Referenced by __pi_i2s_clock_enable().

static void __pi_i2s_clock_disable ( struct i2s_itf_data_s *  itf_data )

static

References i2s_itf_data_s::clk, i2s_itf_data_s::device_id, hal_i2s_cfg_clkgen0_set(), hal_i2s_cfg_clkgen1_set(), and I2S_TRACE.

Referenced by __pi_i2s_ioctl(), and __pi_i2s_suspend().

static void __pi_i2s_clock_enable ( struct i2s_itf_data_s *  itf_data )

static

References __pi_i2s_clk_div(), i2s_itf_data_s::clk, i2s_itf_data_s::device_id, i2s_itf_data_s::frequency, hal_i2s_cfg_clkgen0_set(), hal_i2s_cfg_clkgen1_set(), hal_i2s_ext_clk_set(), I2S_TRACE, and i2s_itf_data_s::word_size.

Referenced by __pi_i2s_ioctl(), and __pi_i2s_resume().

void __pi_i2s_close

(

struct i2s_itf_data_s *

itf_data

)

Parameters

i2s_id

ID of i2s interface.

Referenced by pi_i2s_close().

static int32_t __pi_i2s_conf_apply ( struct i2s_itf_data_s *  itf_data )

static

References i2s_itf_data_s::channels, i2s_itf_data_s::clk, i2s_itf_data_s::device_id, i2s_itf_data_s::format, i2s_itf_data_s::frame_clk_freq, i2s_itf_data_s::frequency, g_i2s_flags, hal_i2s_chmode_ch0_set(), hal_i2s_chmode_ch1_set(), hal_i2s_filt_ch0_set(), hal_i2s_filt_ch1_set(), i2s_itf_data_s::i2s_id, I2S_TRACE_ERR, i2s_itf_data_s::mem_slab, i2s_itf_data_s::options, i2s_itf_data_s::pdm_decimation, i2s_itf_data_s::pdm_filter_ena, i2s_itf_data_s::pdm_shift, pi_fc_l1_malloc(), i2s_itf_data_s::pingpong_buffers, i2s_itf_data_s::ring_buffer, i2s_itf_data_s::ring_buffer_head, i2s_itf_data_s::ring_buffer_nb_elem, i2s_itf_data_s::ring_buffer_tail, and i2s_itf_data_s::word_size.

Referenced by __pi_i2s_conf_set(), and __pi_i2s_open().

static void __pi_i2s_conf_get ( struct i2s_itf_data_s *  itf_data, struct pi_i2s_conf *  conf  )

static

References i2s_itf_data_s::block_size, i2s_itf_data_s::channels, i2s_itf_data_s::format, i2s_itf_data_s::frame_clk_freq, i2s_itf_data_s::i2s_id, i2s_itf_data_s::mem_slab, i2s_itf_data_s::options, i2s_itf_data_s::pdm_decimation, i2s_itf_data_s::pdm_filter_ena, i2s_itf_data_s::pdm_shift, i2s_itf_data_s::pingpong_buffers, and i2s_itf_data_s::word_size.

Referenced by __pi_i2s_ioctl().

void __pi_i2s_conf_init

(

struct pi_i2s_conf *

conf

)

Parameters

conf	Pointer to i2s conf.

Referenced by __pi_i2s_open(), and pi_i2s_conf_init().

static int32_t __pi_i2s_conf_set ( struct i2s_itf_data_s *  itf_data, struct pi_i2s_conf *  conf  )

static

References __pi_i2s_conf_apply(), i2s_itf_data_s::block_size, i2s_itf_data_s::channels, i2s_itf_data_s::format, i2s_itf_data_s::frame_clk_freq, i2s_itf_data_s::i2s_id, i2s_itf_data_s::mem_slab, i2s_itf_data_s::options, i2s_itf_data_s::pdm_decimation, i2s_itf_data_s::pdm_filter_ena, i2s_itf_data_s::pdm_shift, i2s_itf_data_s::pingpong_buffers, and i2s_itf_data_s::word_size.

Referenced by __pi_i2s_ioctl().

static uint8_t __pi_i2s_enqueue ( struct i2s_itf_data_s *  itf_data )

static

References i2s_itf_data_s::block_size, i2s_itf_data_s::cur_buffer, i2s_itf_data_s::device_id, hal_i2s_enqueue(), i2s_itf_data_s::i2s_id, max_size, i2s_itf_data_s::mem_slab, i2s_itf_data_s::options, i2s_itf_data_s::pending_buffer, i2s_itf_data_s::pending_size, pi_mem_slab_alloc(), i2s_itf_data_s::pingpong_buffers, i2s_itf_data_s::ring_buffer, i2s_itf_data_s::ring_buffer_head, i2s_itf_data_s::ring_buffer_nb_elem, and i2s_itf_data_s::udma_cfg.

Referenced by __pi_i2s_handler(), and __pi_i2s_resume().

static void __pi_i2s_handler ( void *  arg )

static

References __pi_i2s_enqueue(), __pi_i2s_pop(), __pi_irq_handle_end_of_task(), pi_task_t::data, i2s_itf_data_s::fifo_head, i2s_itf_data_s::nb_ready_buffer, i2s_itf_data_s::options, i2s_itf_data_s::reenqueue, UDMA_CHANNEL_NB_EVENTS_LOG2, and UDMA_I2S_ID.

Referenced by __pi_i2s_open().

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.

Referenced by pi_i2s_ioctl().

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.

Referenced by pi_i2s_open().

static void * __pi_i2s_pop ( struct i2s_itf_data_s *  itf_data )

static

References i2s_itf_data_s::ring_buffer, i2s_itf_data_s::ring_buffer_nb_elem, and i2s_itf_data_s::ring_buffer_tail.

Referenced by __pi_i2s_handler(), and __pi_i2s_read_async().

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.

Referenced by pi_i2s_read_status().

static void __pi_i2s_resume ( struct i2s_itf_data_s *  itf_data )

static

References __pi_i2s_clock_enable(), __pi_i2s_enqueue(), i2s_itf_data_s::block_size, i2s_itf_data_s::cur_buffer, i2s_itf_data_s::cur_read_buffer, i2s_itf_data_s::device_id, i2s_itf_data_s::fifo_head, i2s_itf_data_s::fifo_tail, i2s_itf_data_s::format, i2s, i2s_itf_data_s::i2s_id, I2S_TRACE, i2s_itf_data_s::nb_ready_buffer, i2s_itf_data_s::options, i2s_itf_data_s::reenqueue, i2s_itf_data_s::udma_cfg, and i2s_itf_data_s::word_size.

Referenced by __pi_i2s_ioctl().

void __pi_i2s_setup

(

uint32_t

flags

)

Parameters

flags

Flags to set.

References g_i2s_flags.

Referenced by pi_i2s_setup().

static void __pi_i2s_suspend ( struct i2s_itf_data_s *  itf_data )

static

References __pi_i2s_clock_disable(), i2s_itf_data_s::device_id, hal_i2s_clear(), i2s_itf_data_s::i2s_id, i2s_itf_data_s::nb_ready_buffer, and i2s_itf_data_s::reenqueue.

Referenced by __pi_i2s_ioctl().

Variable Documentation

uint32_t g_i2s_flags

static

Referenced by __pi_i2s_conf_apply(), and __pi_i2s_setup().

struct i2s_itf_data_s* g_i2s_itf_data[UDMA_NB_I2S<< 1]