Header file for the LT8722 Driver. More...

#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include "no_os_gpio.h"
#include "no_os_spi.h"
#include "no_os_units.h"
#include "no_os_util.h"

Include dependency graph for lt8722.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes
struct	lt8722_reg
	LT8722 register structure. More...

struct	lt8722_command
	LT8722 command structure. More...

struct	lt8722_packet
	LT8722 packet structure. More...

struct	lt8722_init_param
	Initialization parameter for the LT8722 device. More...

struct	lt8722_dev
	Device descriptor for LT8722. More...

Macros
#define	LT8722_CRC_POLYNOMIAL 0x07

#define	LT8722_MAX_REGISTER_SIZE 4

#define	LT8722_NUM_REGISTERS 8

#define	LT8722_STATUS_ACQUISITION_COMMAND 0xF0

#define	LT8722_DATA_WRITE_COMMAND 0xF2

#define	LT8722_DATA_READ_COMMAND 0xF4

#define	LT8722_STATUS_ACQUISITION_COMMAND_SIZE 4

#define	LT8722_DATA_WRITE_COMMAND_SIZE 8

#define	LT8722_DATA_READ_COMMAND_SIZE 8

#define	LT8722_ACK_ACKNOWLEDGE 0xA5

#define	LT8722_ACK_NON_ACKNOWLEDGE 0xC3

#define	LT8722_ACK_UNSUPPORTED_ADDRESS 0x0F

#define	LT8722_ACK_STUCK_AT_0 0x00

#define	LT8722_ACK_STUCK_AT_1 0xFF

#define	LT8722_SPIS_COMMAND 0x00

#define	LT8722_SPIS_STATUS 0x01

#define	LT8722_SPIS_DAC_ILIMN 0x02

#define	LT8722_SPIS_DAC_ILIMP 0x03

#define	LT8722_SPIS_DAC 0x04

#define	LT8722_SPIS_OV_CLAMP 0x05

#define	LT8722_SPIS_UV_CLAMP 0x06

#define	LT8722_SPIS_AMUX 0x07

#define	LT8722_SPIS_COMMAND_SIZE 22

#define	LT8722_SPIS_STATUS_SIZE 11

#define	LT8722_SPIS_DAC_ILIMN_SIZE 9

#define	LT8722_SPIS_DAC_ILIMP_SIZE 9

#define	LT8722_SPIS_DAC_SIZE 32

#define	LT8722_SPIS_OV_CLAMP_SIZE 4

#define	LT8722_SPIS_UV_CLAMP_SIZE 4

#define	LT8722_SPIS_AMUX_SIZE 7

#define	LT8722_SPIS_COMMAND_MASK NO_OS_GENMASK(21, 0)

#define	LT8722_SPIS_STATUS_MASK NO_OS_GENMASK(10, 0)

#define	LT8722_SPIS_DAC_ILIMN_MASK NO_OS_GENMASK(8, 0)

#define	LT8722_SPIS_DAC_ILIMP_MASK NO_OS_GENMASK(8, 0)

#define	LT8722_SPIS_DAC_MASK NO_OS_GENMASK(31, 0)

#define	LT8722_SPIS_OV_CLAMP_MASK NO_OS_GENMASK(3, 0)

#define	LT8722_SPIS_UV_CLAMP_MASK NO_OS_GENMASK(3, 0)

#define	LT8722_SPIS_AMUX_MASK NO_OS_GENMASK(6, 0)

#define	LT8722_SPIS_COMMAND_DEFAULT_VALUE 0x08A214

#define	LT8722_SPIS_STATUS_DEFAULT_VALUE 0x0

#define	LT8722_SPIS_DAC_ILIMN_DEFAULT_VALUE 0x1FF

#define	LT8722_SPIS_DAC_ILIMP_DEFAULT_VALUE 0x000

#define	LT8722_SPIS_DAC_DEFAULT_VALUE 0xFF000000

#define	LT8722_SPIS_OV_CLAMP_DEFAULT_VALUE 0xF

#define	LT8722_SPIS_UV_CLAMP_DEFAULT_VALUE 0x0

#define	LT8722_SPIS_AMUX_DEFAULT_VALUE 0x00

#define	LT8722_ENABLE_REQ_MASK NO_OS_BIT(0)

#define	LT8722_SWEN_REQ_MASK NO_OS_BIT(1)

#define	LT8722_SW_FRQ_SET_MASK NO_OS_GENMASK(4, 2)

#define	LT8722_SW_FRQ_ADJ_MASK NO_OS_GENMASK(6, 5)

#define	LT8722_SYS_DC_MASK NO_OS_GENMASK(8, 7)

#define	LT8722_VCC_VREG_MASK NO_OS_BIT(9)

#define	LT8722_SW_VC_INT_MASK NO_OS_GENMASK(13, 11)

#define	LT8722_SPI_RST_MASK NO_OS_BIT(14)

#define	LT8722_PWR_LIM_POS 15

#define	LT8722_PWR_LIM_MASK NO_OS_GENMASK(18, 15)

#define	LT8722_SPI_RST_RESET 0b1

#define	LT8722_SWEN_MASK NO_OS_BIT(0)

#define	LT8722_SRVO_ILIM_MASK NO_OS_BIT(1)

#define	LT8722_SRVO_PLIM_MASK NO_OS_BIT(2)

#define	LT8722_MIN_OT_MASK NO_OS_BIT(3)

#define	LT8722_POR_OCC_MASK NO_OS_BIT(4)

#define	LT8722_OVER_CURRENT_MASK NO_OS_BIT(5)

#define	LT8722_TSD_MASK NO_OS_BIT(6)

#define	LT8722_VCC_UVLO_MASK NO_OS_BIT(7)

#define	LT8722_VDDIO_UVLO_MASK NO_OS_BIT(8)

#define	LT8722_CP_UVLO_MASK NO_OS_BIT(9)

#define	LT8722_V2P5_UVLO_MASK NO_OS_BIT(10)

#define	LT8722_FAULTS_MASK NO_OS_GENMASK(10, 5)

#define	LT8722_SPIS_DAC_ILIMN_MASK NO_OS_GENMASK(8, 0)

#define	LT8722_SPIS_DAC_ILIMN_MIN 0x030

#define	LT8722_SPIS_DAC_ILIMN_MAX 0x1FF

#define	LT8722_SPIS_DAC_ILIMP_MASK NO_OS_GENMASK(8, 0)

#define	LT8722_SPIS_DAC_ILIMP_MIN 0x000

#define	LT8722_SPIS_DAC_ILIMP_MAX 0x1CE

#define	LT8722_SPIS_DAC_MASK NO_OS_GENMASK(31, 0)

#define	LT8722_SPIS_OV_CLAMP_MASK NO_OS_GENMASK(3, 0)

#define	LT8722_SPIS_UV_CLAMP_MASK NO_OS_GENMASK(3, 0)

#define	LT8722_AMUX_MASK NO_OS_GENMASK(3, 0)

#define	LT8722_AMUX_TEST_MASK NO_OS_GENMASK(5, 4)

#define	LT8722_AOUT_EN_MASK NO_OS_BIT(6)

#define	LT8722_DAC_RESOLUTION 25

#define	LT8722_DAC_OFFSET 1250000000LL

#define	LT8722_DAC_VREF 2500000000LL

#define	LT8722_VOLTAGE_SCALE NANO

Enumerations
enum	lt8722_enable_req { LT8722_ENABLE_REQ_DISABLED, LT8722_ENABLE_REQ_ENABLED }
	VCC LDO enable bit and linear power stage enable request bit. More...

enum	lt8722_swen_req { LT8722_SWEN_REQ_DISABLED, LT8722_SWEN_REQ_ENABLED }
	PWM switch enable request bit. More...

enum	lt8722_sw_frq_set { LT8722_SW_FRQ_SET_0_5MHZ, LT8722_SW_FRQ_SET_1MHZ, LT8722_SW_FRQ_SET_1_5MHZ, LT8722_SW_FRQ_SET_2MHZ, LT8722_SW_FRQ_SET_2_5MHZ, LT8722_SW_FRQ_SET_3MHZ, LT8722_SW_FRQ_SET_3MHZ_2, LT8722_SW_FRQ_SET_3MHZ_3 }
	PWM switch frequency control bits. More...

enum	lt8722_sw_frq_adj { LT8722_SW_FRQ_ADJ_0_PERCENT, LT8722_SW_FRQ_ADJ_POSITIVE_15_PERCENT, LT8722_SW_FRQ_ADJ_NEGATIVE_15_PERCENT, LT8722_SW_FRQ_ADJ_0_PERCENT_2 }
	PWM switch frequency adjustment bits. More...

enum	lt8722_vcc_vreg { LT8722_VCC_VREG_3_1V, LT8722_VCC_VREG_3_4V }
	VCC LDO regulation control bits. More...

enum	lt8722_sw_vc_int { LT8722_SW_VC_INT_0_252A, LT8722_SW_VC_INT_0_594A, LT8722_SW_VC_INT_0_936A, LT8722_SW_VC_INT_1_278A, LT8722_SW_VC_INT_1_620A, LT8722_SW_VC_INT_1_962A, LT8722_SW_VC_INT_2_304A, LT8722_SW_VC_INT_2_646A }
	Typical peak inductor current after BST-SW refresh period control bits. More...

enum	lt8722_pwr_lim { LT8722_PWR_LIM_2W, LT8722_PWR_LIM_NO_LIMIT, LT8722_PWR_LIM_3W, LT8722_PWR_LIM_3_5W }
	Linear power stage MOSFET power limit control bits. More...

enum	lt8722_sys_dc { LT8722_SYS_DC_20_80_DUTY_CYCLE, LT8722_SYS_DC_15_85_DUTY_CYCLE, LT8722_SYS_DC_10_90_DUTY_CYCLE }
	PWM duty cycle control bits. More...

enum	lt8722_amux { LT8722_AMUX_VILIMP, LT8722_AMUX_VILIMN, LT8722_AMUX_VDAC, LT8722_AMUX_VOUT, LT8722_AMUX_IOUT, LT8722_AMUX_V2P5, LT8722_AMUX_V1P25, LT8722_AMUX_V1P65, LT8722_AMUX_VTEMP, LT8722_AMUX_VIN, LT8722_AMUX_VCC, LT8722_AMUX_VDDIO, LT8722_AMUX_VSFB, LT8722_AMUX_VSFB_2, LT8722_AMUX_VSFB_3, LT8722_AMUX_VSFB_4 }
	Analog multiplexer control bits. More...

enum	lt8722_aout_en { LT8722_AOUT_EN_DISABLED, LT8722_AOUT_EN_ENABLED }
	Analog output buffer enable control bits. More...

Functions
int32_t	lt8722_voltage_to_dac (int64_t voltage)
	Convert voltage to DAC code. More...

int64_t	lt8722_dac_to_voltage (int32_t dac)
	Convert DAC code to nanovolts. More...

int	lt8722_transaction (struct lt8722_dev dev, struct lt8722_packet packet)
	LT8722 device SPI transaction. More...

int	lt8722_reg_read (struct lt8722_dev dev, uint8_t address, uint32_t data)
	Read data from LT8722 device. More...

int	lt8722_reg_write (struct lt8722_dev *dev, uint8_t address, uint32_t data)
	Write data to LT8722 device. More...

int	lt8722_reg_write_mask (struct lt8722_dev *dev, uint8_t address, uint32_t mask, uint32_t data)
	Write to LT8722 device register with mask. More...

int	lt8722_get_status (struct lt8722_dev dev, uint16_t status)
	Get LT8722 device status. More...

int	lt8722_clear_faults (struct lt8722_dev *dev)
	Clear LT8722 device faults. More...

int	lt8722_set_enable_req (struct lt8722_dev *dev, bool value)
	Set ENABLE_REQ field in LT8722 device. More...

int	lt8722_get_enable_req (struct lt8722_dev dev, bool value)
	Get ENABLE_REQ field in LT8722 device. More...

int	lt8722_set_swen_req (struct lt8722_dev *dev, bool value)
	Set switching enable of LT8722 device. More...

int	lt8722_get_swen_req (struct lt8722_dev dev, bool value)
	Get switching enable of LT8722 device. More...

int	lt8722_set_sw_frq_set (struct lt8722_dev *dev, enum lt8722_sw_frq_set value)
	Set switching frequency of LT8722 device. More...

int	lt8722_get_sw_frq_set (struct lt8722_dev dev, enum lt8722_sw_frq_set value)
	Get switching frequency of LT8722 device. More...

int	lt8722_set_sw_frq_adj (struct lt8722_dev *dev, enum lt8722_sw_frq_adj value)
	Set switching frequency adjustment of LT8722 device. More...

int	lt8722_get_sw_frq_adj (struct lt8722_dev dev, enum lt8722_sw_frq_adj value)
	Get switching frequency adjustment of LT8722 device. More...

int	lt8722_set_vcc_vreg (struct lt8722_dev *dev, enum lt8722_vcc_vreg value)
	Set internal circuitry voltage source of LT8722 device. More...

int	lt8722_get_vcc_vreg (struct lt8722_dev dev, enum lt8722_vcc_vreg value)
	Get internal circuitry voltage source of LT8722 device. More...

int	lt8722_set_sw_vc_int (struct lt8722_dev *dev, enum lt8722_sw_vc_int value)
	Set initial peak inductor current of LT8722 device. More...

int	lt8722_get_sw_vc_int (struct lt8722_dev dev, enum lt8722_sw_vc_int value)
	Get initial peak inductor current of LT8722 device. More...

int	lt8722_set_pwr_lim (struct lt8722_dev *dev, enum lt8722_pwr_lim value)
	Set LDR power dissipation limit of LT8722 device. More...

int	lt8722_get_pwr_lim (struct lt8722_dev dev, enum lt8722_pwr_lim value)
	Get LDR power dissipation limit of LT8722 device. More...

int	lt8722_set_sys_dc (struct lt8722_dev *dev, enum lt8722_sys_dc value)
	Set PWM duty cycle of LT8722 device. More...

int	lt8722_get_sys_dc (struct lt8722_dev dev, enum lt8722_sys_dc value)
	Get PWM duty cycle of LT8722 device. More...

int	lt8722_set_spis_dac_ilimn (struct lt8722_dev *dev, uint16_t value)
	Set negative output current limit of LT8722 device. More...

int	lt8722_get_spis_dac_ilimn (struct lt8722_dev dev, uint16_t value)
	Get negative output current limit of LT8722 device. More...

int	lt8722_set_spis_dac_ilimp (struct lt8722_dev *dev, uint16_t value)
	Set positive output current limit of LT8722 device. More...

int	lt8722_get_spis_dac_ilimp (struct lt8722_dev dev, uint16_t value)
	Get positive output current limit of LT8722 device. More...

int	lt8722_set_dac (struct lt8722_dev *dev, uint32_t value)
	Set DAC code of LT8722 device. More...

int	lt8722_get_dac (struct lt8722_dev dev, uint32_t value)
	Get DAC code of LT8722 device. More...

int	lt8722_set_spis_ov_clamp (struct lt8722_dev *dev, uint8_t value)
	Set positive output voltage limit of LT8722 device. More...

int	lt8722_get_spis_ov_clamp (struct lt8722_dev dev, uint8_t value)
	Get positive output voltage limit of LT8722 device. More...

int	lt8722_set_spis_uv_clamp (struct lt8722_dev *dev, uint8_t value)
	Set negative output voltage limit of LT8722 device. More...

int	lt8722_get_spis_uv_clamp (struct lt8722_dev dev, uint8_t value)
	Get negative output voltage limit of LT8722 device. More...

int	lt8722_set_aout_en (struct lt8722_dev *dev, bool value)
	Set analog output buffer status of LT8722 device. More...

int	lt8722_get_aout_en (struct lt8722_dev dev, bool value)
	Get analog output buffer status of LT8722 device. More...

int	lt8722_set_amux (struct lt8722_dev *dev, enum lt8722_amux value, uint8_t test)
	Set analot output signal source of LT8722 device. More...

int	lt8722_get_amux (struct lt8722_dev dev, enum lt8722_amux value, uint8_t *test)
	Get analot output signal source of LT8722 device. More...

int	lt8722_set_output_voltage (struct lt8722_dev *dev, int64_t value)
	Set output volatge of LT8722 device. More...

int	lt8722_get_output_voltage (struct lt8722_dev dev, int64_t value)
	Get output volatge of LT8722 device. More...

int	lt8722_shutdown (struct lt8722_dev *dev)
	Reset the LT8722 device. More...

int	lt8722_reset (struct lt8722_dev *dev)
	Shutdown the LT8722 device. More...

int	lt8722_set_swen_pin (struct lt8722_dev *dev, uint8_t value)
	Set SWEN pin of LT8722 device. More...

int	lt8722_get_swen_pin (struct lt8722_dev dev, uint8_t value)
	Get SWEN pin of LT8722 device. More...

int	lt8722_set_en_pin (struct lt8722_dev *dev, uint8_t value)
	Set EN pin of LT8722 device. More...

int	lt8722_get_en_pin (struct lt8722_dev dev, uint8_t value)
	Get EN pin of LT8722 device. More...

int	lt8722_init (struct lt8722_dev *device, struct lt8722_init_param init_param)
	Initialize the LT8722 device. More...

int	lt8722_remove (struct lt8722_dev *dev)
	Free the resources allocated by the lt8722_init() More...

Variables
struct lt8722_reg	lt8722_regs [LT8722_NUM_REGISTERS]

Detailed Description

Header file for the LT8722 Driver.

Author: Ramon Cristopher Calam (ramon.nosp@m.cris.nosp@m.tophe.nosp@m.r.ca.nosp@m.lam@a.nosp@m.nalo.nosp@m.g.com)

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of Analog Devices, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES, INC. “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANALOG DEVICES, INC. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Macro Definition Documentation

◆ LT8722_ACK_ACKNOWLEDGE

#define LT8722_ACK_ACKNOWLEDGE 0xA5

◆ LT8722_ACK_NON_ACKNOWLEDGE

#define LT8722_ACK_NON_ACKNOWLEDGE 0xC3

◆ LT8722_ACK_STUCK_AT_0

#define LT8722_ACK_STUCK_AT_0 0x00

◆ LT8722_ACK_STUCK_AT_1

#define LT8722_ACK_STUCK_AT_1 0xFF

◆ LT8722_ACK_UNSUPPORTED_ADDRESS

#define LT8722_ACK_UNSUPPORTED_ADDRESS 0x0F

◆ LT8722_AMUX_MASK

#define LT8722_AMUX_MASK NO_OS_GENMASK(3, 0)

◆ LT8722_AMUX_TEST_MASK

#define LT8722_AMUX_TEST_MASK NO_OS_GENMASK(5, 4)

◆ LT8722_AOUT_EN_MASK

#define LT8722_AOUT_EN_MASK NO_OS_BIT(6)

◆ LT8722_CP_UVLO_MASK

#define LT8722_CP_UVLO_MASK NO_OS_BIT(9)

◆ LT8722_CRC_POLYNOMIAL

#define LT8722_CRC_POLYNOMIAL 0x07

◆ LT8722_DAC_OFFSET

#define LT8722_DAC_OFFSET 1250000000LL

◆ LT8722_DAC_RESOLUTION

#define LT8722_DAC_RESOLUTION 25

◆ LT8722_DAC_VREF

#define LT8722_DAC_VREF 2500000000LL

◆ LT8722_DATA_READ_COMMAND

#define LT8722_DATA_READ_COMMAND 0xF4

◆ LT8722_DATA_READ_COMMAND_SIZE

#define LT8722_DATA_READ_COMMAND_SIZE 8

◆ LT8722_DATA_WRITE_COMMAND

#define LT8722_DATA_WRITE_COMMAND 0xF2

◆ LT8722_DATA_WRITE_COMMAND_SIZE

#define LT8722_DATA_WRITE_COMMAND_SIZE 8

◆ LT8722_ENABLE_REQ_MASK

#define LT8722_ENABLE_REQ_MASK NO_OS_BIT(0)

◆ LT8722_FAULTS_MASK

#define LT8722_FAULTS_MASK NO_OS_GENMASK(10, 5)

◆ LT8722_MAX_REGISTER_SIZE

#define LT8722_MAX_REGISTER_SIZE 4

◆ LT8722_MIN_OT_MASK

#define LT8722_MIN_OT_MASK NO_OS_BIT(3)

◆ LT8722_NUM_REGISTERS

#define LT8722_NUM_REGISTERS 8

◆ LT8722_OVER_CURRENT_MASK

#define LT8722_OVER_CURRENT_MASK NO_OS_BIT(5)

◆ LT8722_POR_OCC_MASK

#define LT8722_POR_OCC_MASK NO_OS_BIT(4)

◆ LT8722_PWR_LIM_MASK

#define LT8722_PWR_LIM_MASK NO_OS_GENMASK(18, 15)

◆ LT8722_PWR_LIM_POS

#define LT8722_PWR_LIM_POS 15

◆ LT8722_SPI_RST_MASK

#define LT8722_SPI_RST_MASK NO_OS_BIT(14)

◆ LT8722_SPI_RST_RESET

#define LT8722_SPI_RST_RESET 0b1

◆ LT8722_SPIS_AMUX

#define LT8722_SPIS_AMUX 0x07

◆ LT8722_SPIS_AMUX_DEFAULT_VALUE

#define LT8722_SPIS_AMUX_DEFAULT_VALUE 0x00

◆ LT8722_SPIS_AMUX_MASK

#define LT8722_SPIS_AMUX_MASK NO_OS_GENMASK(6, 0)

◆ LT8722_SPIS_AMUX_SIZE

#define LT8722_SPIS_AMUX_SIZE 7

◆ LT8722_SPIS_COMMAND

#define LT8722_SPIS_COMMAND 0x00

◆ LT8722_SPIS_COMMAND_DEFAULT_VALUE

#define LT8722_SPIS_COMMAND_DEFAULT_VALUE 0x08A214

◆ LT8722_SPIS_COMMAND_MASK

#define LT8722_SPIS_COMMAND_MASK NO_OS_GENMASK(21, 0)

◆ LT8722_SPIS_COMMAND_SIZE

#define LT8722_SPIS_COMMAND_SIZE 22

◆ LT8722_SPIS_DAC

#define LT8722_SPIS_DAC 0x04

◆ LT8722_SPIS_DAC_DEFAULT_VALUE

#define LT8722_SPIS_DAC_DEFAULT_VALUE 0xFF000000

◆ LT8722_SPIS_DAC_ILIMN

#define LT8722_SPIS_DAC_ILIMN 0x02

◆ LT8722_SPIS_DAC_ILIMN_DEFAULT_VALUE

#define LT8722_SPIS_DAC_ILIMN_DEFAULT_VALUE 0x1FF

◆ LT8722_SPIS_DAC_ILIMN_MASK [1/2]

#define LT8722_SPIS_DAC_ILIMN_MASK NO_OS_GENMASK(8, 0)

◆ LT8722_SPIS_DAC_ILIMN_MASK [2/2]

#define LT8722_SPIS_DAC_ILIMN_MASK NO_OS_GENMASK(8, 0)

◆ LT8722_SPIS_DAC_ILIMN_MAX

#define LT8722_SPIS_DAC_ILIMN_MAX 0x1FF

◆ LT8722_SPIS_DAC_ILIMN_MIN

#define LT8722_SPIS_DAC_ILIMN_MIN 0x030

◆ LT8722_SPIS_DAC_ILIMN_SIZE

#define LT8722_SPIS_DAC_ILIMN_SIZE 9

◆ LT8722_SPIS_DAC_ILIMP

#define LT8722_SPIS_DAC_ILIMP 0x03

◆ LT8722_SPIS_DAC_ILIMP_DEFAULT_VALUE

#define LT8722_SPIS_DAC_ILIMP_DEFAULT_VALUE 0x000

◆ LT8722_SPIS_DAC_ILIMP_MASK [1/2]

#define LT8722_SPIS_DAC_ILIMP_MASK NO_OS_GENMASK(8, 0)

◆ LT8722_SPIS_DAC_ILIMP_MASK [2/2]

#define LT8722_SPIS_DAC_ILIMP_MASK NO_OS_GENMASK(8, 0)

◆ LT8722_SPIS_DAC_ILIMP_MAX

#define LT8722_SPIS_DAC_ILIMP_MAX 0x1CE

◆ LT8722_SPIS_DAC_ILIMP_MIN

#define LT8722_SPIS_DAC_ILIMP_MIN 0x000

◆ LT8722_SPIS_DAC_ILIMP_SIZE

#define LT8722_SPIS_DAC_ILIMP_SIZE 9

◆ LT8722_SPIS_DAC_MASK [1/2]

#define LT8722_SPIS_DAC_MASK NO_OS_GENMASK(31, 0)

◆ LT8722_SPIS_DAC_MASK [2/2]

#define LT8722_SPIS_DAC_MASK NO_OS_GENMASK(31, 0)

◆ LT8722_SPIS_DAC_SIZE

#define LT8722_SPIS_DAC_SIZE 32

◆ LT8722_SPIS_OV_CLAMP

#define LT8722_SPIS_OV_CLAMP 0x05

◆ LT8722_SPIS_OV_CLAMP_DEFAULT_VALUE

#define LT8722_SPIS_OV_CLAMP_DEFAULT_VALUE 0xF

◆ LT8722_SPIS_OV_CLAMP_MASK [1/2]

#define LT8722_SPIS_OV_CLAMP_MASK NO_OS_GENMASK(3, 0)

◆ LT8722_SPIS_OV_CLAMP_MASK [2/2]

#define LT8722_SPIS_OV_CLAMP_MASK NO_OS_GENMASK(3, 0)

◆ LT8722_SPIS_OV_CLAMP_SIZE

#define LT8722_SPIS_OV_CLAMP_SIZE 4

◆ LT8722_SPIS_STATUS

#define LT8722_SPIS_STATUS 0x01

◆ LT8722_SPIS_STATUS_DEFAULT_VALUE

#define LT8722_SPIS_STATUS_DEFAULT_VALUE 0x0

◆ LT8722_SPIS_STATUS_MASK

#define LT8722_SPIS_STATUS_MASK NO_OS_GENMASK(10, 0)

◆ LT8722_SPIS_STATUS_SIZE

#define LT8722_SPIS_STATUS_SIZE 11

◆ LT8722_SPIS_UV_CLAMP

#define LT8722_SPIS_UV_CLAMP 0x06

◆ LT8722_SPIS_UV_CLAMP_DEFAULT_VALUE

#define LT8722_SPIS_UV_CLAMP_DEFAULT_VALUE 0x0

◆ LT8722_SPIS_UV_CLAMP_MASK [1/2]

#define LT8722_SPIS_UV_CLAMP_MASK NO_OS_GENMASK(3, 0)

◆ LT8722_SPIS_UV_CLAMP_MASK [2/2]

#define LT8722_SPIS_UV_CLAMP_MASK NO_OS_GENMASK(3, 0)

◆ LT8722_SPIS_UV_CLAMP_SIZE

#define LT8722_SPIS_UV_CLAMP_SIZE 4

◆ LT8722_SRVO_ILIM_MASK

#define LT8722_SRVO_ILIM_MASK NO_OS_BIT(1)

◆ LT8722_SRVO_PLIM_MASK

#define LT8722_SRVO_PLIM_MASK NO_OS_BIT(2)

◆ LT8722_STATUS_ACQUISITION_COMMAND

#define LT8722_STATUS_ACQUISITION_COMMAND 0xF0

◆ LT8722_STATUS_ACQUISITION_COMMAND_SIZE

#define LT8722_STATUS_ACQUISITION_COMMAND_SIZE 4

◆ LT8722_SW_FRQ_ADJ_MASK

#define LT8722_SW_FRQ_ADJ_MASK NO_OS_GENMASK(6, 5)

◆ LT8722_SW_FRQ_SET_MASK

#define LT8722_SW_FRQ_SET_MASK NO_OS_GENMASK(4, 2)

◆ LT8722_SW_VC_INT_MASK

#define LT8722_SW_VC_INT_MASK NO_OS_GENMASK(13, 11)

◆ LT8722_SWEN_MASK

#define LT8722_SWEN_MASK NO_OS_BIT(0)

◆ LT8722_SWEN_REQ_MASK

#define LT8722_SWEN_REQ_MASK NO_OS_BIT(1)

◆ LT8722_SYS_DC_MASK

#define LT8722_SYS_DC_MASK NO_OS_GENMASK(8, 7)

◆ LT8722_TSD_MASK

#define LT8722_TSD_MASK NO_OS_BIT(6)

◆ LT8722_V2P5_UVLO_MASK

#define LT8722_V2P5_UVLO_MASK NO_OS_BIT(10)

◆ LT8722_VCC_UVLO_MASK

#define LT8722_VCC_UVLO_MASK NO_OS_BIT(7)

◆ LT8722_VCC_VREG_MASK

#define LT8722_VCC_VREG_MASK NO_OS_BIT(9)

◆ LT8722_VDDIO_UVLO_MASK

#define LT8722_VDDIO_UVLO_MASK NO_OS_BIT(8)

◆ LT8722_VOLTAGE_SCALE

#define LT8722_VOLTAGE_SCALE NANO

Enumeration Type Documentation

◆ lt8722_amux

enum lt8722_amux

Analog multiplexer control bits.

Enumerator
LT8722_AMUX_VILIMP
LT8722_AMUX_VILIMN
LT8722_AMUX_VDAC
LT8722_AMUX_VOUT
LT8722_AMUX_IOUT
LT8722_AMUX_V2P5
LT8722_AMUX_V1P25
LT8722_AMUX_V1P65
LT8722_AMUX_VTEMP
LT8722_AMUX_VIN
LT8722_AMUX_VCC
LT8722_AMUX_VDDIO
LT8722_AMUX_VSFB
LT8722_AMUX_VSFB_2
LT8722_AMUX_VSFB_3
LT8722_AMUX_VSFB_4

◆ lt8722_aout_en

enum lt8722_aout_en

Analog output buffer enable control bits.

Enumerator
LT8722_AOUT_EN_DISABLED	Disable
LT8722_AOUT_EN_ENABLED	Enable

◆ lt8722_enable_req

enum lt8722_enable_req

VCC LDO enable bit and linear power stage enable request bit.

Enumerator
LT8722_ENABLE_REQ_DISABLED	Disable bit
LT8722_ENABLE_REQ_ENABLED	Enable bit

◆ lt8722_pwr_lim

enum lt8722_pwr_lim

Linear power stage MOSFET power limit control bits.

Enumerator
LT8722_PWR_LIM_2W	2W
LT8722_PWR_LIM_NO_LIMIT	No limit
LT8722_PWR_LIM_3W	3W
LT8722_PWR_LIM_3_5W	3.5W

◆ lt8722_sw_frq_adj

enum lt8722_sw_frq_adj

PWM switch frequency adjustment bits.

Enumerator
LT8722_SW_FRQ_ADJ_0_PERCENT	0%
LT8722_SW_FRQ_ADJ_POSITIVE_15_PERCENT	+15%
LT8722_SW_FRQ_ADJ_NEGATIVE_15_PERCENT	-15%
LT8722_SW_FRQ_ADJ_0_PERCENT_2	0%

◆ lt8722_sw_frq_set

enum lt8722_sw_frq_set

PWM switch frequency control bits.

Enumerator
LT8722_SW_FRQ_SET_0_5MHZ	0.5 MHz
LT8722_SW_FRQ_SET_1MHZ	1 MHz
LT8722_SW_FRQ_SET_1_5MHZ	1.5 MHz
LT8722_SW_FRQ_SET_2MHZ	2 MHz
LT8722_SW_FRQ_SET_2_5MHZ	2.5 MHz
LT8722_SW_FRQ_SET_3MHZ	3 MHz
LT8722_SW_FRQ_SET_3MHZ_2	3 MHz
LT8722_SW_FRQ_SET_3MHZ_3	3 MHz

◆ lt8722_sw_vc_int

enum lt8722_sw_vc_int

Typical peak inductor current after BST-SW refresh period control bits.

Enumerator
LT8722_SW_VC_INT_0_252A	0.252A
LT8722_SW_VC_INT_0_594A	0.594A
LT8722_SW_VC_INT_0_936A	0.936A
LT8722_SW_VC_INT_1_278A	1.278A
LT8722_SW_VC_INT_1_620A	1.620A
LT8722_SW_VC_INT_1_962A	1.962A
LT8722_SW_VC_INT_2_304A	2.304A
LT8722_SW_VC_INT_2_646A	2.646A

◆ lt8722_swen_req

enum lt8722_swen_req

PWM switch enable request bit.

Enumerator
LT8722_SWEN_REQ_DISABLED	Disable bit
LT8722_SWEN_REQ_ENABLED	Enable bit

◆ lt8722_sys_dc

enum lt8722_sys_dc

PWM duty cycle control bits.

Enumerator
LT8722_SYS_DC_20_80_DUTY_CYCLE	20% - 80%
LT8722_SYS_DC_15_85_DUTY_CYCLE	15% - 85%
LT8722_SYS_DC_10_90_DUTY_CYCLE	10% - 90%

◆ lt8722_vcc_vreg

enum lt8722_vcc_vreg

VCC LDO regulation control bits.

Enumerator
LT8722_VCC_VREG_3_1V	3.1V
LT8722_VCC_VREG_3_4V	3.4V

Function Documentation

◆ lt8722_clear_faults()

int lt8722_clear_faults ( struct lt8722_dev * dev )

Clear LT8722 device faults.

Clear LT8722 faults

Parameters

dev	- LT8722 device descriptor

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

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◆ lt8722_dac_to_voltage()

int64_t lt8722_dac_to_voltage ( int32_t dac )

Convert DAC code to nanovolts.

Convert DAC code to voltage

Parameters

dac	- DAC code.

Returns: Voltage value in nanovolts.

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◆ lt8722_get_amux()

int lt8722_get_amux	(	struct lt8722_dev *	dev,
		enum lt8722_amux *	value,
		uint8_t *	test
	)

Get analot output signal source of LT8722 device.

Get analog output signal source

Parameters

dev	- LT8722 device descriptor
value	- Analog output signal source value.
test	- AMUX_TEST value.

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

◆ lt8722_get_aout_en()

int lt8722_get_aout_en	(	struct lt8722_dev *	dev,
		bool *	value
	)

Get analog output buffer status of LT8722 device.

Get analog output buffer status

Parameters

dev	- LT8722 device descriptor
value	- Analog output buffer status value

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

◆ lt8722_get_dac()

int lt8722_get_dac	(	struct lt8722_dev *	dev,
		uint32_t *	value
	)

Get DAC code of LT8722 device.

Get output voltage

Parameters

dev	- LT8722 device descriptor
value	- DAC value

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

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◆ lt8722_get_en_pin()

int lt8722_get_en_pin	(	struct lt8722_dev *	dev,
		uint8_t *	value
	)

Get EN pin of LT8722 device.

Get EN pin

Parameters

dev	- LT8722 device descriptor
value	- EN pin value.

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

◆ lt8722_get_enable_req()

int lt8722_get_enable_req	(	struct lt8722_dev *	dev,
		bool *	value
	)

Get ENABLE_REQ field in LT8722 device.

Get ENABLE_REQ

Parameters

dev	- LT8722 device descriptor
value	- Enable if true, disabled otherwise

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

◆ lt8722_get_output_voltage()

int lt8722_get_output_voltage	(	struct lt8722_dev *	dev,
		int64_t *	value
	)

Get output volatge of LT8722 device.

Get output voltage

Parameters

dev	- LT8722 device descriptor
value	- Output voltage value in nanovolts.

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

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◆ lt8722_get_pwr_lim()

int lt8722_get_pwr_lim	(	struct lt8722_dev *	dev,
		enum lt8722_pwr_lim *	value
	)

Get LDR power dissipation limit of LT8722 device.

Get LDR power dissipation limit

Parameters

dev	- LT8722 device descriptor
value	- LDR power dissipation limit value

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

◆ lt8722_get_spis_dac_ilimn()

int lt8722_get_spis_dac_ilimn	(	struct lt8722_dev *	dev,
		uint16_t *	value
	)

Get negative output current limit of LT8722 device.

Get positive output current limit

Parameters

dev	- LT8722 device descriptor
value	- Negative output current limit value

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

◆ lt8722_get_spis_dac_ilimp()

int lt8722_get_spis_dac_ilimp	(	struct lt8722_dev *	dev,
		uint16_t *	value
	)

Get positive output current limit of LT8722 device.

Get positive output current limit

Parameters

dev	- LT8722 device descriptor
value	- Positive output current limit value

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

◆ lt8722_get_spis_ov_clamp()

int lt8722_get_spis_ov_clamp	(	struct lt8722_dev *	dev,
		uint8_t *	value
	)

Get positive output voltage limit of LT8722 device.

Get positive output voltage limit

Parameters

dev	- LT8722 device descriptor
value	- Positive output voltage limit value

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

◆ lt8722_get_spis_uv_clamp()

int lt8722_get_spis_uv_clamp	(	struct lt8722_dev *	dev,
		uint8_t *	value
	)

Get negative output voltage limit of LT8722 device.

Get negative output voltage limit

Parameters

dev	- LT8722 device descriptor
value	- Negative output voltage limit value

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

◆ lt8722_get_status()

int lt8722_get_status	(	struct lt8722_dev *	dev,
		uint16_t *	status
	)

Get LT8722 device status.

Get LT8722 status

Parameters

dev	- LT8722 device descriptor
status	- Status value to be returned.

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

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◆ lt8722_get_sw_frq_adj()

int lt8722_get_sw_frq_adj	(	struct lt8722_dev *	dev,
		enum lt8722_sw_frq_adj *	value
	)

Get switching frequency adjustment of LT8722 device.

Get switching frequency adjustment

Parameters

dev	- LT8722 device descriptor
value	- Switching frequency value

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

◆ lt8722_get_sw_frq_set()

int lt8722_get_sw_frq_set	(	struct lt8722_dev *	dev,
		enum lt8722_sw_frq_set *	value
	)

Get switching frequency of LT8722 device.

Get switching frequency

Parameters

dev	- LT8722 device descriptor
value	- Switching frequency value

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

◆ lt8722_get_sw_vc_int()

int lt8722_get_sw_vc_int	(	struct lt8722_dev *	dev,
		enum lt8722_sw_vc_int *	value
	)

Get initial peak inductor current of LT8722 device.

Get initial peak inductor current

Parameters

dev	- LT8722 device descriptor
value	- Peak inductor current value

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

◆ lt8722_get_swen_pin()

int lt8722_get_swen_pin	(	struct lt8722_dev *	dev,
		uint8_t *	value
	)

Get SWEN pin of LT8722 device.

Get SWEN pin

Parameters

dev	- LT8722 device descriptor
value	- SWEN pin value.

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

◆ lt8722_get_swen_req()

int lt8722_get_swen_req	(	struct lt8722_dev *	dev,
		bool *	value
	)

Get switching enable of LT8722 device.

Get SWEN_REQ

Parameters

dev	- LT8722 device descriptor
value	- Enable if true, disabled otherwise

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

◆ lt8722_get_sys_dc()

int lt8722_get_sys_dc	(	struct lt8722_dev *	dev,
		enum lt8722_sys_dc *	value
	)

Get PWM duty cycle of LT8722 device.

Get PWM duty cycle

Parameters

dev	- LT8722 device descriptor
value	- PWM duty cycle value

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

◆ lt8722_get_vcc_vreg()

int lt8722_get_vcc_vreg	(	struct lt8722_dev *	dev,
		enum lt8722_vcc_vreg *	value
	)

Get internal circuitry voltage source of LT8722 device.

Get internal circuitry voltage source

Parameters

dev	- LT8722 device descriptor
value	- VCC voltage regulator output

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

◆ lt8722_init()

int lt8722_init	(	struct lt8722_dev **	device,
		struct lt8722_init_param *	init_param
	)

Initialize the LT8722 device.

Initialize the LT8722 device descriptor.

Parameters

device	- LT8722 device descriptor
init_param	- Initialization parameter containing information about the LT8722 device to be initialized.

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

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◆ lt8722_reg_read()

int lt8722_reg_read	(	struct lt8722_dev *	dev,
		uint8_t	address,
		uint32_t *	data
	)

Read data from LT8722 device.

Parameters

dev	- LT8722 device descriptor
address	- Register address.
data	- Received data.

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

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◆ lt8722_reg_write()

int lt8722_reg_write	(	struct lt8722_dev *	dev,
		uint8_t	address,
		uint32_t	data
	)

Write data to LT8722 device.

Parameters

dev	- LT8722 device descriptor
address	- Register address.
data	- Data to be written.

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

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◆ lt8722_reg_write_mask()

int lt8722_reg_write_mask	(	struct lt8722_dev *	dev,
		uint8_t	address,
		uint32_t	mask,
		uint32_t	data
	)

Write to LT8722 device register with mask.

Write data to LT8722 device with mask.

Parameters

dev	- LT8722 device descriptor
address	- Register address.
mask	- Mask to be applied.
data	- Data to be written.

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

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◆ lt8722_remove()

int lt8722_remove ( struct lt8722_dev * dev )

Free the resources allocated by the lt8722_init()

Remove resources allocated by the init function.

Parameters

dev	- LT8722 device descriptor

Returns: - 0 in case of succes, negative error code otherwise

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◆ lt8722_reset()

int lt8722_reset ( struct lt8722_dev * dev )

Shutdown the LT8722 device.

Reset device

Parameters

dev	- LT8722 device descriptor

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

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◆ lt8722_set_amux()

int lt8722_set_amux	(	struct lt8722_dev *	dev,
		enum lt8722_amux	value,
		uint8_t	test
	)

Set analot output signal source of LT8722 device.

Set analog output signal source

Parameters

dev	- LT8722 device descriptor
value	- Analog output signal source value
test	- AMUX_TEST value

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

◆ lt8722_set_aout_en()

int lt8722_set_aout_en	(	struct lt8722_dev *	dev,
		bool	value
	)

Set analog output buffer status of LT8722 device.

Set analog output buffer status

Parameters

dev	- LT8722 device descriptor
value	- Analog output buffer status value

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

◆ lt8722_set_dac()

int lt8722_set_dac	(	struct lt8722_dev *	dev,
		uint32_t	value
	)

Set DAC code of LT8722 device.

Set output voltage

Parameters

dev	- LT8722 device descriptor
value	- DAC value

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

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◆ lt8722_set_en_pin()

int lt8722_set_en_pin	(	struct lt8722_dev *	dev,
		uint8_t	value
	)

Set EN pin of LT8722 device.

Set EN pin

Parameters

dev	- LT8722 device descriptor
value	- EN pin value.

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

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◆ lt8722_set_enable_req()

int lt8722_set_enable_req	(	struct lt8722_dev *	dev,
		bool	value
	)

Set ENABLE_REQ field in LT8722 device.

Set ENABLE_REQ

Parameters

dev	- LT8722 device descriptor
value	- Enable if true, disabled otherwise

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

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◆ lt8722_set_output_voltage()

int lt8722_set_output_voltage	(	struct lt8722_dev *	dev,
		int64_t	value
	)

Set output volatge of LT8722 device.

Set output voltage

Parameters

dev	- LT8722 device descriptor
value	- Output voltage value in nanovolts.

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

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◆ lt8722_set_pwr_lim()

int lt8722_set_pwr_lim	(	struct lt8722_dev *	dev,
		enum lt8722_pwr_lim	value
	)

Set LDR power dissipation limit of LT8722 device.

Set LDR power dissipation limit

Parameters

dev	- LT8722 device descriptor
value	- LDR power dissipation limit value

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

◆ lt8722_set_spis_dac_ilimn()

int lt8722_set_spis_dac_ilimn	(	struct lt8722_dev *	dev,
		uint16_t	value
	)

Set negative output current limit of LT8722 device.

Set negative output current limit

Parameters

dev	- LT8722 device descriptor
value	- Negative output current limit value

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

◆ lt8722_set_spis_dac_ilimp()

int lt8722_set_spis_dac_ilimp	(	struct lt8722_dev *	dev,
		uint16_t	value
	)

Set positive output current limit of LT8722 device.

Set positive output current limit

Parameters

dev	- LT8722 device descriptor
value	- Positive output current limit value

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

◆ lt8722_set_spis_ov_clamp()

int lt8722_set_spis_ov_clamp	(	struct lt8722_dev *	dev,
		uint8_t	value
	)

Set positive output voltage limit of LT8722 device.

Set positive output voltage limit

Parameters

dev	- LT8722 device descriptor
value	- Positive output voltage limit value

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

◆ lt8722_set_spis_uv_clamp()

int lt8722_set_spis_uv_clamp	(	struct lt8722_dev *	dev,
		uint8_t	value
	)

Set negative output voltage limit of LT8722 device.

Set negative output voltage limit

Parameters

dev	- LT8722 device descriptor
value	- Negative output voltage limit value

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

◆ lt8722_set_sw_frq_adj()

int lt8722_set_sw_frq_adj	(	struct lt8722_dev *	dev,
		enum lt8722_sw_frq_adj	value
	)

Set switching frequency adjustment of LT8722 device.

Set switching frequency adjustment

Parameters

dev	- LT8722 device descriptor
value	- Switching frequency adjustment value

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

◆ lt8722_set_sw_frq_set()

int lt8722_set_sw_frq_set	(	struct lt8722_dev *	dev,
		enum lt8722_sw_frq_set	value
	)

Set switching frequency of LT8722 device.

Set switching frequency

Parameters

dev	- LT8722 device descriptor
value	- Switching frequency value

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

◆ lt8722_set_sw_vc_int()

int lt8722_set_sw_vc_int	(	struct lt8722_dev *	dev,
		enum lt8722_sw_vc_int	value
	)

Set initial peak inductor current of LT8722 device.

Set initial peak inductor current

Parameters

dev	- LT8722 device descriptor
value	- Peak inductor current value

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

◆ lt8722_set_swen_pin()

int lt8722_set_swen_pin	(	struct lt8722_dev *	dev,
		uint8_t	value
	)

Set SWEN pin of LT8722 device.

Set SWEN pin

Parameters

dev	- LT8722 device descriptor
value	- SWEN pin value.

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

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◆ lt8722_set_swen_req()

int lt8722_set_swen_req	(	struct lt8722_dev *	dev,
		bool	value
	)

Set switching enable of LT8722 device.

Set SWEN_REQ

Parameters

dev	- LT8722 device descriptor
value	- Enable if true, disabled otherwise

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

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◆ lt8722_set_sys_dc()

int lt8722_set_sys_dc	(	struct lt8722_dev *	dev,
		enum lt8722_sys_dc	value
	)

Set PWM duty cycle of LT8722 device.

Set PWM duty cycle

Parameters

dev	- LT8722 device descriptor
value	- PWM duty cycle value

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

◆ lt8722_set_vcc_vreg()

int lt8722_set_vcc_vreg	(	struct lt8722_dev *	dev,
		enum lt8722_vcc_vreg	value
	)

Set internal circuitry voltage source of LT8722 device.

Set internal circuitry voltage source

Parameters

dev	- LT8722 device descriptor
value	- VCC voltage regulator output

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

◆ lt8722_shutdown()

int lt8722_shutdown ( struct lt8722_dev * dev )

Reset the LT8722 device.

Shutdown device

Parameters

dev	- LT8722 device descriptor

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

◆ lt8722_transaction()

int lt8722_transaction	(	struct lt8722_dev *	dev,
		struct lt8722_packet *	packet
	)

LT8722 device SPI transaction.

LT8722 device SPI transaction

Parameters

dev	- LT8722 device descriptor
packet	- LT8722 packet.

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

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◆ lt8722_voltage_to_dac()

int32_t lt8722_voltage_to_dac ( int64_t voltage )

Convert voltage to DAC code.

Convert voltage to DAC code

Parameters

voltage - Voltage value in nanovolts.

Returns: DAC code.

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Variable Documentation

◆ lt8722_regs

struct lt8722_reg lt8722_regs[LT8722_NUM_REGISTERS]

Classes

Macros

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ LT8722_ACK_ACKNOWLEDGE

◆ LT8722_ACK_NON_ACKNOWLEDGE

◆ LT8722_ACK_STUCK_AT_0

◆ LT8722_ACK_STUCK_AT_1

◆ LT8722_ACK_UNSUPPORTED_ADDRESS

◆ LT8722_AMUX_MASK

◆ LT8722_AMUX_TEST_MASK

◆ LT8722_AOUT_EN_MASK

◆ LT8722_CP_UVLO_MASK

◆ LT8722_CRC_POLYNOMIAL

◆ LT8722_DAC_OFFSET

◆ LT8722_DAC_RESOLUTION

◆ LT8722_DAC_VREF

◆ LT8722_DATA_READ_COMMAND

◆ LT8722_DATA_READ_COMMAND_SIZE

◆ LT8722_DATA_WRITE_COMMAND

◆ LT8722_DATA_WRITE_COMMAND_SIZE

◆ LT8722_ENABLE_REQ_MASK

◆ LT8722_FAULTS_MASK

◆ LT8722_MAX_REGISTER_SIZE

◆ LT8722_MIN_OT_MASK

◆ LT8722_NUM_REGISTERS

◆ LT8722_OVER_CURRENT_MASK

◆ LT8722_POR_OCC_MASK

◆ LT8722_PWR_LIM_MASK

◆ LT8722_PWR_LIM_POS

◆ LT8722_SPI_RST_MASK

◆ LT8722_SPI_RST_RESET

◆ LT8722_SPIS_AMUX

◆ LT8722_SPIS_AMUX_DEFAULT_VALUE

◆ LT8722_SPIS_AMUX_MASK

◆ LT8722_SPIS_AMUX_SIZE

◆ LT8722_SPIS_COMMAND

◆ LT8722_SPIS_COMMAND_DEFAULT_VALUE

◆ LT8722_SPIS_COMMAND_MASK

◆ LT8722_SPIS_COMMAND_SIZE

◆ LT8722_SPIS_DAC

◆ LT8722_SPIS_DAC_DEFAULT_VALUE

◆ LT8722_SPIS_DAC_ILIMN

◆ LT8722_SPIS_DAC_ILIMN_DEFAULT_VALUE

◆ LT8722_SPIS_DAC_ILIMN_MASK [1/2]

◆ LT8722_SPIS_DAC_ILIMN_MASK [2/2]

◆ LT8722_SPIS_DAC_ILIMN_MAX

◆ LT8722_SPIS_DAC_ILIMN_MIN

◆ LT8722_SPIS_DAC_ILIMN_SIZE

◆ LT8722_SPIS_DAC_ILIMP

◆ LT8722_SPIS_DAC_ILIMP_DEFAULT_VALUE

◆ LT8722_SPIS_DAC_ILIMP_MASK [1/2]

◆ LT8722_SPIS_DAC_ILIMP_MASK [2/2]

◆ LT8722_SPIS_DAC_ILIMP_MAX

◆ LT8722_SPIS_DAC_ILIMP_MIN

◆ LT8722_SPIS_DAC_ILIMP_SIZE

◆ LT8722_SPIS_DAC_MASK [1/2]

◆ LT8722_SPIS_DAC_MASK [2/2]

◆ LT8722_SPIS_DAC_SIZE

◆ LT8722_SPIS_OV_CLAMP

◆ LT8722_SPIS_OV_CLAMP_DEFAULT_VALUE

◆ LT8722_SPIS_OV_CLAMP_MASK [1/2]

◆ LT8722_SPIS_OV_CLAMP_MASK [2/2]

◆ LT8722_SPIS_OV_CLAMP_SIZE

◆ LT8722_SPIS_STATUS

◆ LT8722_SPIS_STATUS_DEFAULT_VALUE

◆ LT8722_SPIS_STATUS_MASK

◆ LT8722_SPIS_STATUS_SIZE

◆ LT8722_SPIS_UV_CLAMP

◆ LT8722_SPIS_UV_CLAMP_DEFAULT_VALUE

◆ LT8722_SPIS_UV_CLAMP_MASK [1/2]

◆ LT8722_SPIS_UV_CLAMP_MASK [2/2]

◆ LT8722_SPIS_UV_CLAMP_SIZE

◆ LT8722_SRVO_ILIM_MASK

◆ LT8722_SRVO_PLIM_MASK

◆ LT8722_STATUS_ACQUISITION_COMMAND

◆ LT8722_STATUS_ACQUISITION_COMMAND_SIZE