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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
37struct 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_ */