1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Hardware monitoring driver for PMBus devices 4 * 5 * Copyright (c) 2010, 2011 Ericsson AB. 6 */ 7 8 #ifndef _PMBUS_H_ 9 #define _PMBUS_H_ 10 11 #include <linux/bits.h> 12 13 /* flags */ 14 15 /* 16 * PMBUS_SKIP_STATUS_CHECK 17 * 18 * During register detection, skip checking the status register for 19 * communication or command errors. 20 * 21 * Some PMBus chips respond with valid data when trying to read an unsupported 22 * register. For such chips, checking the status register is mandatory when 23 * trying to determine if a chip register exists or not. 24 * Other PMBus chips don't support the STATUS_CML register, or report 25 * communication errors for no explicable reason. For such chips, checking 26 * the status register must be disabled. 27 */ 28 #define PMBUS_SKIP_STATUS_CHECK BIT(0) 29 30 /* 31 * PMBUS_WRITE_PROTECTED 32 * Set if the chip is write protected and write protection is not determined 33 * by the standard WRITE_PROTECT command. 34 */ 35 #define PMBUS_WRITE_PROTECTED BIT(1) 36 37 struct pmbus_platform_data { 38 u32 flags; /* Device specific flags */ 39 40 /* regulator support */ 41 int num_regulators; 42 struct regulator_init_data *reg_init_data; 43 }; 44 45 #endif /* _PMBUS_H_ */ 46