#include <string.h>
#include <assert.h>
#include <device/i2c.h>
#include <device/i2c_simple.h>
#include <endian.h>
#include <soc/timer.h>
#include <libbdk-arch/bdk-numa.h>
#include <libbdk-hal/bdk-config.h>
#include <libbdk-hal/bdk-twsi.h>
#include <libbdk-boot/bdk-watchdog.h>

Include dependency graph for bdk-coreboot.c:

Functions
int64_t	bdk_twsix_read_ia (bdk_node_t node, int twsi_id, uint8_t dev_addr, uint16_t internal_addr, int num_bytes, int ia_width_bytes)
	Do a twsi read from a 7 bit device address using an (optional) internal address. More...

int	bdk_twsix_write_ia (bdk_node_t node, int twsi_id, uint8_t dev_addr, uint16_t internal_addr, int num_bytes, int ia_width_bytes, uint64_t data)
	Write 1-8 bytes to a TWSI device using an internal address. More...

void	bdk_watchdog_set (unsigned int timeout_ms)

void	bdk_watchdog_poke (void)

void	bdk_watchdog_disable (void)

int	bdk_watchdog_is_running (void)

Function Documentation

◆ bdk_twsix_read_ia()

int64_t bdk_twsix_read_ia	(	bdk_node_t	node,
		int	twsi_id,
		uint8_t	dev_addr,
		uint16_t	internal_addr,
		int	num_bytes,
		int	ia_width_bytes
	)

Do a twsi read from a 7 bit device address using an (optional) internal address.

Up to 4 bytes can be read at a time.

Parameters

twsi_id	which TWSI bus to use
dev_addr	Device address (7 bit)
internal_addr	Internal address. Can be 0, 1 or 2 bytes in width
num_bytes	Number of data bytes to read (1-4)
ia_width_bytes	Internal address size in bytes (0, 1, or 2)

Returns: Read data, or -1 on failure

Definition at line 35 of file bdk-coreboot.c.

References ARRAY_SIZE, assert, i2c_msg::buf, buf, i2c_msg::flags, I2C_M_RD, i2c_transfer(), i2c_msg::len, and i2c_msg::slave.

Here is the call graph for this function:

◆ bdk_twsix_write_ia()

int bdk_twsix_write_ia	(	bdk_node_t	node,
		int	twsi_id,
		uint8_t	dev_addr,
		uint16_t	internal_addr,
		int	num_bytes,
		int	ia_width_bytes,
		uint64_t	data
	)

Write 1-8 bytes to a TWSI device using an internal address.

Parameters

twsi_id	which TWSI interface to use
dev_addr	TWSI device address (7 bit only)
internal_addr	TWSI internal address (0, 8, or 16 bits)
num_bytes	Number of bytes to write (1-8)
ia_width_bytes	internal address width, in bytes (0, 1, 2)
data	Data to write. Data is written MSB first on the twsi bus, and only the lower num_bytes bytes of the argument are valid. If a 2 byte write is done, only the low 2 bytes of the argument is used.