| Guenter Roeck | 442aba7 | 2011-01-26 20:09:02 -0800 | [diff] [blame] | 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 | |
| 45 | #endif /* _PMBUS_H_ */ |