#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>
#include <errno.h>
#include "no_os_units.h"
#include "no_os_util.h"
#include "no_os_delay.h"
#include "no_os_alloc.h"
#include "no_os_i2c.h"
#include "no_os_gpio.h"
#include "no_os_crc8.h"
#include "lt3074.h"

Include dependency graph for lt3074.c:

Macros
#define	LT3074_LIN11_MANTISSA_MAX 1023000L

#define	LT3074_LIN11_MANTISSA_MIN 511000L

#define	LT3074_LIN11_EXPONENT_MAX 15

#define	LT3074_LIN11_EXPONENT_MIN -15

#define	LT3074_LIN11_MANTISSA_MSK NO_OS_GENMASK(10,0)

#define	LT3074_LIN11_EXPONENT_MSK NO_OS_GENMASK(15,11)

#define	LT3074_LIN11_EXPONENT(x)

#define	LT3074_LIN11_MANTISSA(x)

#define	LT3074_LIN16_EXPONENT -13

Functions
	NO_OS_DECLARE_CRC8_TABLE (lt3074_crc_table)

int	lt3074_init (struct lt3074_dev *device, struct lt3074_init_param init_param)
	Initialize the device structure.

int	lt3074_remove (struct lt3074_dev *dev)
	Free or remove device instance.

int	lt3074_send_byte (struct lt3074_dev *dev, uint32_t cmd)
	Send a PMBus command to the device.

int	lt3074_read_byte (struct lt3074_dev dev, uint32_t cmd, uint8_t data)
	Perform a raw PMBus read byte operation.

int	lt3074_write_byte (struct lt3074_dev *dev, uint32_t cmd, uint8_t value)
	Perform a raw PMBus write byte operation.

int	lt3074_read_word (struct lt3074_dev dev, uint32_t cmd, uint16_t word)
	Perform a raw PMBus read word operation.

int	lt3074_write_word (struct lt3074_dev *dev, uint32_t cmd, uint16_t word)
	Perform a raw PMBus write word operation.

int	lt3074_read_word_data (struct lt3074_dev dev, uint32_t cmd, int data)
	Perform a PMBus read word operation and converts to actual value.

int	lt3074_write_word_data (struct lt3074_dev *dev, uint32_t cmd, int data)
	Converts value to register data and do PMBus write word operation.

int	lt3074_read_block_data (struct lt3074_dev dev, uint32_t cmd, uint8_t data, size_t nbytes)
	Perform a PMBus read block operation.

int	lt3074_reg_read (struct lt3074_dev dev, uint32_t reg, uint32_t data)
	Generic register read wrapper.

int	lt3074_reg_write (struct lt3074_dev *dev, uint32_t reg, uint32_t val)
	Generic register write wrapper.

int	lt3074_read_value (struct lt3074_dev dev, enum lt3074_value_type value_type, int value)
	Read a value.

int	lt3074_read_status (struct lt3074_dev dev, enum lt3074_status_type status_type, struct lt3074_status status)
	Read statuses.

int	lt3074_vout_margin (struct lt3074_dev *dev, enum lt3074_margin margin_high, enum lt3074_margin margin_low)
	Set output voltage margin.

int	lt3074_set_limit (struct lt3074_dev *dev, enum lt3074_limit_type limit, int limit_val)
	Sets the limit value for a specific fault/warning limits.

int	lt3074_set_operation (struct lt3074_dev *dev, enum lt3074_operation_type operation)
	Set operation.

int	lt3074_clear_faults (struct lt3074_dev *dev)
	Clear status registers.

int	lt3074_set_enable_pin (struct lt3074_dev *dev, bool state)
	Enable/Disable the device using the EN pin.

int	lt3074_software_reset (struct lt3074_dev *dev)
	Perform a device software reset.

Macro Definition Documentation

◆ LT3074_LIN11_EXPONENT

#define LT3074_LIN11_EXPONENT ( x )

Value:

((int16_t)(x) >> 11)

◆ LT3074_LIN11_EXPONENT_MAX

#define LT3074_LIN11_EXPONENT_MAX 15

◆ LT3074_LIN11_EXPONENT_MIN

#define LT3074_LIN11_EXPONENT_MIN -15

◆ LT3074_LIN11_EXPONENT_MSK

#define LT3074_LIN11_EXPONENT_MSK NO_OS_GENMASK(15,11)

◆ LT3074_LIN11_MANTISSA

#define LT3074_LIN11_MANTISSA ( x )

Value:

(((int16_t)((x & 0x7FF) << 5)) >> 5)

◆ LT3074_LIN11_MANTISSA_MAX

#define LT3074_LIN11_MANTISSA_MAX 1023000L

◆ LT3074_LIN11_MANTISSA_MIN

#define LT3074_LIN11_MANTISSA_MIN 511000L

◆ LT3074_LIN11_MANTISSA_MSK

#define LT3074_LIN11_MANTISSA_MSK NO_OS_GENMASK(10,0)

◆ LT3074_LIN16_EXPONENT

#define LT3074_LIN16_EXPONENT -13

Function Documentation

◆ lt3074_clear_faults()

int lt3074_clear_faults ( struct lt3074_dev * dev )

Clear status registers.

Parameters

dev	- Device structure

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_init()

int lt3074_init	(	struct lt3074_dev **	device,
		struct lt3074_init_param *	init_param )

Initialize the device structure.

Parameters

device	- Device structure
init_param	- Initialization parameters

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_read_block_data()

int lt3074_read_block_data	(	struct lt3074_dev *	dev,
		uint32_t	cmd,
		uint8_t *	data,
		size_t	nbytes )

Perform a PMBus read block operation.

Parameters

dev	- Device structure
cmd	- PMBus command
data	- Address of the read block
nbytes	- Size of the block in bytes

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_read_byte()

int lt3074_read_byte	(	struct lt3074_dev *	dev,
		uint32_t	cmd,
		uint8_t *	data )

Perform a raw PMBus read byte operation.

Parameters

dev	- Device structure
cmd	- PMBus command
data	- Address of the byte read

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_read_status()

int lt3074_read_status	(	struct lt3074_dev *	dev,
		enum lt3074_status_type	status_type,
		struct lt3074_status *	status )

Read statuses.

Parameters

dev	- Device structure
status_type	- Status type. Example values: LT3074_STATUS_BYTE_TYPE LT3074_STATUS_VOUT_TYPE LT3074_STATUS_IOUT_TYPE LT3074_STATUS_INPUT_TYPE LT3074_STATUS_CML_TYPE
status	- Address of the status structure

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_read_value()

int lt3074_read_value	(	struct lt3074_dev *	dev,
		enum lt3074_value_type	value_type,
		int *	value )

Read a value.

Parameters

dev	- Device structure
value_type	- Value type. Example values: LT3074_VIN LT3074_VOUT LT3074_IOUT LT3074_TEMP LT3074_VBIAS
value	- Address of the read value

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_read_word()

int lt3074_read_word	(	struct lt3074_dev *	dev,
		uint32_t	cmd,
		uint16_t *	word )

Perform a raw PMBus read word operation.

Parameters

dev	- Device structure
cmd	- PMBus command
word	- Address of the read word

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_read_word_data()

int lt3074_read_word_data	(	struct lt3074_dev *	dev,
		uint32_t	cmd,
		int *	data )

Perform a PMBus read word operation and converts to actual value.

Parameters

dev	- Device structure
cmd	- PMBus command
data	- Address of data read

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_reg_read()

int lt3074_reg_read	(	struct lt3074_dev *	dev,
		uint32_t	reg,
		uint32_t *	data )

Generic register read wrapper.

Parameters

dev	- Device structure
reg	- PMBus regiser
data	- Address of the read data

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_reg_write()

int lt3074_reg_write	(	struct lt3074_dev *	dev,
		uint32_t	reg,
		uint32_t	val )

Generic register write wrapper.

Parameters

dev	- Device structure
reg	- PMBus register
val	- Value to write

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_remove()

int lt3074_remove ( struct lt3074_dev * dev )

Free or remove device instance.

Parameters

dev	- The device structure

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_send_byte()

int lt3074_send_byte	(	struct lt3074_dev *	dev,
		uint32_t	cmd )

Send a PMBus command to the device.

Parameters

dev	- Device structure
cmd	- PMBus command

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_set_enable_pin()

int lt3074_set_enable_pin	(	struct lt3074_dev *	dev,
		bool	state )

Enable/Disable the device using the EN pin.

Parameters

dev	- Device structure
state	- Enable/Disable state. 0 for disable, 1 for enable.

Returns: 0 in case of success, negative error code otherwise

◆ lt3074_set_limit()

int lt3074_set_limit	(	struct lt3074_dev *	dev,
		enum lt3074_limit_type	limit,
		int	limit_val )

Sets the limit value for a specific fault/warning limits.

Parameters

dev	- Device structure
limit	- The type of limit to set.
limit_val	- The value to set for the specified limit type.

Returns: Returns 0 on success, or a negative error code on failure.

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◆ lt3074_set_operation()

int lt3074_set_operation	(	struct lt3074_dev *	dev,
		enum lt3074_operation_type	operation )

Set operation.

Parameters

dev	- Device structure
operation	- Operation. Accepted values are: LT3074_OPERATION_OFF LT3074_OPERATION_ON LT3074_OPERATION_MARGIN_HIGH LT3074_OPERATION_MARGIN_LOW

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_software_reset()

int lt3074_software_reset ( struct lt3074_dev * dev )

Perform a device software reset.

Parameters

dev	- Device structure

Returns: 0 in case of success, negative error code otherwise

◆ lt3074_vout_margin()

int lt3074_vout_margin	(	struct lt3074_dev *	dev,
		enum lt3074_margin	margin_high,
		enum lt3074_margin	margin_low )

Set output voltage margin.

Parameters

dev	- Device structure
margin_high	- Upper margin
margin_low	- Lower margin

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_write_byte()

int lt3074_write_byte	(	struct lt3074_dev *	dev,
		uint32_t	cmd,
		uint8_t	value )

Perform a raw PMBus write byte operation.

Parameters

dev	- Device structure
cmd	- PMBus command
value	- Byte to be written

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_write_word()

int lt3074_write_word	(	struct lt3074_dev *	dev,
		uint32_t	cmd,
		uint16_t	word )

Perform a raw PMBus write word operation.

Parameters

dev	- Device structure
cmd	- PMBus command
word	- Word to write

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_write_word_data()

int lt3074_write_word_data	(	struct lt3074_dev *	dev,
		uint32_t	cmd,
		int	data )

Converts value to register data and do PMBus write word operation.

Parameters

dev	- Device structure
cmd	- PMBus command
data	- Value to write

Returns: 0 in case of success, negative error code otherwise

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◆ NO_OS_DECLARE_CRC8_TABLE()

NO_OS_DECLARE_CRC8_TABLE ( lt3074_crc_table )

Macros

Functions

Macro Definition Documentation

◆ LT3074_LIN11_EXPONENT

◆ LT3074_LIN11_EXPONENT_MAX

◆ LT3074_LIN11_EXPONENT_MIN

◆ LT3074_LIN11_EXPONENT_MSK

◆ LT3074_LIN11_MANTISSA

◆ LT3074_LIN11_MANTISSA_MAX

◆ LT3074_LIN11_MANTISSA_MIN

◆ LT3074_LIN11_MANTISSA_MSK

◆ LT3074_LIN16_EXPONENT

Function Documentation

◆ lt3074_clear_faults()

◆ lt3074_init()

◆ lt3074_read_block_data()

◆ lt3074_read_byte()

◆ lt3074_read_status()

◆ lt3074_read_value()

◆ lt3074_read_word()

◆ lt3074_read_word_data()

◆ lt3074_reg_read()

◆ lt3074_reg_write()

◆ lt3074_remove()

◆ lt3074_send_byte()

◆ lt3074_set_enable_pin()

◆ lt3074_set_limit()

◆ lt3074_set_operation()

◆ lt3074_software_reset()

◆ lt3074_vout_margin()

◆ lt3074_write_byte()

◆ lt3074_write_word()

◆ lt3074_write_word_data()

◆ NO_OS_DECLARE_CRC8_TABLE()