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Edit File: pmbus.h

/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Hardware monitoring driver for PMBus devices * * Copyright (c) 2010, 2011 Ericsson AB. */ #ifndef _PMBUS_H_ #define _PMBUS_H_ #include <linux/bits.h> /* flags */ /* * PMBUS_SKIP_STATUS_CHECK * * During register detection, skip checking the status register for * communication or command errors. * * Some PMBus chips respond with valid data when trying to read an unsupported * register. For such chips, checking the status register is mandatory when * trying to determine if a chip register exists or not. * Other PMBus chips don't support the STATUS_CML register, or report * communication errors for no explicable reason. For such chips, checking * the status register must be disabled. */ #define PMBUS_SKIP_STATUS_CHECK BIT(0) /* * PMBUS_WRITE_PROTECTED * Set if the chip is write protected and write protection is not determined * by the standard WRITE_PROTECT command. */ #define PMBUS_WRITE_PROTECTED BIT(1) /* * PMBUS_NO_CAPABILITY * * Some PMBus chips don't respond with valid data when reading the CAPABILITY * register. For such chips, this flag should be set so that the PMBus core * driver doesn't use CAPABILITY to determine it's behavior. */ #define PMBUS_NO_CAPABILITY BIT(2) /* * PMBUS_READ_STATUS_AFTER_FAILED_CHECK * * Some PMBus chips end up in an undefined state when trying to read an * unsupported register. For such chips, it is necessary to reset the * chip pmbus controller to a known state after a failed register check. * This can be done by reading a known register. By setting this flag the * driver will try to read the STATUS register after each failed * register check. This read may fail, but it will put the chip in a * known state. */ #define PMBUS_READ_STATUS_AFTER_FAILED_CHECK BIT(3) /* * PMBUS_NO_WRITE_PROTECT * * Some PMBus chips respond with invalid data when reading the WRITE_PROTECT * register. For such chips, this flag should be set so that the PMBus core * driver doesn't use the WRITE_PROTECT command to determine its behavior. */ #define PMBUS_NO_WRITE_PROTECT BIT(4) /* * PMBUS_USE_COEFFICIENTS_CMD * * When this flag is set the PMBus core driver will use the COEFFICIENTS * register to initialize the coefficients for the direct mode format. */ #define PMBUS_USE_COEFFICIENTS_CMD BIT(5) struct pmbus_platform_data { u32 flags; /* Device specific flags */ /* regulator support */ int num_regulators; struct regulator_init_data *reg_init_data; }; #endif /* _PMBUS_H_ */