gap8/pmsis/drivers/udma/uart/uart_internal.c File Reference

Functions
static void	__pi_uart_handle_end_of_task (struct pi_task *task)
static void	__pi_uart_handler (void *arg)
static uint32_t	__pi_uart_task_fifo_enqueue (struct uart_itf_data_s *data, struct pi_task *task, udma_channel_e channel)
static struct pi_task *	__pi_uart_task_fifo_pop (struct uart_itf_data_s *data, udma_channel_e channel)
static void	__pi_uart_copy_exec (struct uart_itf_data_s *data, struct pi_task *task)
static void	__pi_uart_conf_set (struct uart_itf_data_s *data, struct pi_uart_conf *conf)
static void	__pi_uart_channel_enable (struct uart_itf_data_s *data, udma_channel_e channel)
static void	__pi_uart_rx_abort (struct uart_itf_data_s *data)
static void	__pi_uart_tx_abort (struct uart_itf_data_s *data)
static int32_t	__pi_uart_flow_control_enable (struct uart_itf_data_s *data)
static void	__pi_uart_copy_exec_flow_control (struct uart_itf_data_s *data, struct pi_task *task)
static void	__pi_uart_freq_cb (void *args)
static uint16_t	__pi_uart_clk_div (uint32_t baudrate)
void	__pi_uart_conf_init (struct pi_uart_conf *conf)
	Initialize conf struct. More...
int32_t	__pi_uart_open (struct uart_itf_data_s **device_data, struct pi_uart_conf *conf)
	Open a device. More...
void	__pi_uart_close (struct uart_itf_data_s *data)
	Close a device. More...
int32_t	__pi_uart_ioctl (struct uart_itf_data_s *data, uint32_t cmd, void *arg)
	Ioctl commands. More...
int32_t	__pi_uart_copy (struct uart_itf_data_s *data, uint32_t l2_buf, uint32_t size, udma_channel_e channel, struct pi_task *task)
	Transfer data. More...

Variables
static struct uart_itf_data_s *	g_uart_itf_data [UDMA_NB_UART]

Function Documentation

static void __pi_uart_channel_enable ( struct uart_itf_data_s *  data, udma_channel_e  channel  )

inlinestatic

References uart_itf_data_s::device_id, hal_uart_rx_enable(), hal_uart_tx_enable(), and RX_CHANNEL.

Referenced by __pi_uart_ioctl().

static uint16_t __pi_uart_clk_div ( uint32_t  baudrate )

inlinestatic

References pi_freq_get().

Referenced by __pi_uart_conf_set(), and __pi_uart_freq_cb().

void __pi_uart_close

(

struct uart_itf_data_s *

driver_data

)

This function closes an opened device.

Parameters

driver_data

Pointer to driver info.

Referenced by pi_uart_close().

void __pi_uart_conf_init

(

struct pi_uart_conf *

conf

)

This function initializes a config struct with default values.

Parameters

conf	Pointer to struct pi_uart_conf.

Referenced by pi_uart_conf_init().

static void __pi_uart_conf_set ( struct uart_itf_data_s *  data, struct pi_uart_conf *  conf  )

inlinestatic

References __pi_uart_clk_div(), uart_itf_data_s::baudrate_bps, uart_itf_data_s::device_id, hal_uart_setup_set(), uart, and UART_TRACE.

Referenced by __pi_uart_ioctl(), and __pi_uart_open().

int32_t __pi_uart_copy	(	struct uart_itf_data_s *	driver_data,
		uint32_t	l2_buf,
		uint32_t	size,
		udma_channel_e	channel,
		struct pi_task *	task
	)

This function allows to send/receive data using the periph. The transfer is executed immediately if there is no current transfer or no pending transfer. Otherwise, the transfer is enqueued in a fifo.

Parameters

driver_data	Pointer to driver info.
l2_buf	Address of data buffer.
size	Size of data buffer.
channel	Direction of transfer.
task	Event task used to notify end of transfer.

Return values

0	If operation is successfull.
-1	Otherwise.

Referenced by __pi_uart_read(), __pi_uart_write(), pi_uart_read_async(), and pi_uart_write_async().

static void __pi_uart_copy_exec ( struct uart_itf_data_s *  data, struct pi_task *  task  )

static

References uart_itf_data_s::device_id, hal_compiler_barrier(), hal_uart_enqueue(), max_size, RX_CHANNEL, UART_TRACE, and UDMA_MAX_SIZE.

Referenced by __pi_uart_copy(), and __pi_uart_handler().

static void __pi_uart_copy_exec_flow_control ( struct uart_itf_data_s *  data, struct pi_task *  task  )

static

Referenced by __pi_uart_copy(), and __pi_uart_handler().

static int32_t __pi_uart_flow_control_enable ( struct uart_itf_data_s *  data )

static

Referenced by __pi_uart_ioctl(), and __pi_uart_open().

static void __pi_uart_freq_cb ( void *  args )

static

References __pi_uart_clk_div(), uart_itf_data_s::baudrate_bps, uart_itf_data_s::device_id, hal_uart_clkdiv_set(), hal_uart_rx_disable(), hal_uart_rx_enable(), hal_uart_rx_status_get(), hal_uart_tx_disable(), hal_uart_tx_enable(), hal_uart_tx_status_get(), uart, and UART_TRACE.

Referenced by __pi_uart_open().

static void __pi_uart_handle_end_of_task ( struct pi_task *  task )

static

References pi_task_push(), and pi_task_release().

Referenced by __pi_uart_handler().

static void __pi_uart_handler ( void *  arg )

static

References __pi_uart_copy_exec(), __pi_uart_copy_exec_flow_control(), __pi_uart_handle_end_of_task(), __pi_uart_task_fifo_pop(), uart_itf_data_s::fifo_head, uart_itf_data_s::flow_ctrl_ena, UART_TRACE, UDMA_CHANNEL_NB_EVENTS_LOG2, and UDMA_UART_ID.

Referenced by __pi_uart_open().

int32_t __pi_uart_ioctl	(	struct uart_itf_data_s *	driver_data,
		uint32_t	cmd,
		void *	arg
	)

This function allows to configure a device using ioctl commands.

Parameters

driver_data	Pointer to driver info.
cmd	Ioctl command.
arg	Ioctl command arg.

Return values

-1	If wrong ioctl command.
Value	Value depending on ioctl command.

Referenced by pi_uart_ioctl().

int32_t __pi_uart_open	(	struct uart_itf_data_s **	driver_data,
		struct pi_uart_conf *	conf
	)

This function opens a device. A conf struct and a pointer to store UART driver info should be given.

driver_data Pointer to store driver info.

Parameters

conf	Pointer to struct pi_uart_conf.

Return values

0	If operation is successfull.
ERRNO	An error code otherwise.

References __pi_uart_conf_set(), __pi_uart_flow_control_enable(), __pi_uart_freq_cb(), __pi_uart_handler(), uart_itf_data_s::baudrate_bps, uart_itf_data_s::device_id, uart_itf_data_s::flow_ctrl_ena, hal_soc_eu_set_fc_mask(), memset(), uart_itf_data_s::nb_open, pi_fc_event_handler_set(), pi_freq_callback_add(), pi_freq_callback_init(), pi_l2_malloc(), SOC_EVENT_UDMA_UART_RX, SOC_EVENT_UDMA_UART_TX, uart, uart_itf_data_s::uart_freq_cb, UART_TRACE, UART_TRACE_ERR, udma_ctrl_cg_disable(), UDMA_GC, and UDMA_UART_ID.

Referenced by pi_uart_open().

static void __pi_uart_rx_abort ( struct uart_itf_data_s *  data )

static

References uart_itf_data_s::device_id, uart_itf_data_s::fifo_head, uart_itf_data_s::fifo_tail, hal_uart_rx_clear(), hal_uart_rx_disable(), RX_CHANNEL, uart, and UART_TRACE.

Referenced by __pi_uart_close(), and __pi_uart_ioctl().

static uint32_t __pi_uart_task_fifo_enqueue ( struct uart_itf_data_s *  data, struct pi_task *  task, udma_channel_e  channel  )

inlinestatic

References uart_itf_data_s::fifo_head, and uart_itf_data_s::fifo_tail.

Referenced by __pi_uart_copy().

static struct pi_task * __pi_uart_task_fifo_pop ( struct uart_itf_data_s *  data, udma_channel_e  channel  )

static

References uart_itf_data_s::fifo_head, and uart_itf_data_s::fifo_tail.

Referenced by __pi_uart_handler().

static void __pi_uart_tx_abort ( struct uart_itf_data_s *  data )

static

References uart_itf_data_s::device_id, uart_itf_data_s::fifo_head, uart_itf_data_s::fifo_tail, hal_uart_tx_clear(), hal_uart_tx_disable(), TX_CHANNEL, uart, and UART_TRACE.

Referenced by __pi_uart_close(), and __pi_uart_ioctl().

Variable Documentation

struct uart_itf_data_s* g_uart_itf_data[UDMA_NB_UART]

static