1 /*
2  * Hardware monitoring driver for PMBus devices
3  *
4  * Copyright (c) 2010, 2011 Ericsson AB.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19  */
20 
21 #ifndef _PMBUS_H_
22 #define _PMBUS_H_
23 
24 /* flags */
25 
26 /*
27  * PMBUS_SKIP_STATUS_CHECK
28  *
29  * During register detection, skip checking the status register for
30  * communication or command errors.
31  *
32  * Some PMBus chips respond with valid data when trying to read an unsupported
33  * register. For such chips, checking the status register is mandatory when
34  * trying to determine if a chip register exists or not.
35  * Other PMBus chips don't support the STATUS_CML register, or report
36  * communication errors for no explicable reason. For such chips, checking
37  * the status register must be disabled.
38  */
39 #define PMBUS_SKIP_STATUS_CHECK	(1 << 0)
40 
41 struct pmbus_platform_data {
42 	u32 flags;		/* Device specific flags */
43 
44 	/* regulator support */
45 	int num_regulators;
46 	struct regulator_init_data *reg_init_data;
47 };
48 
49 #endif /* _PMBUS_H_ */
50