From 442aba78728e77e03172ba83e905b9aff96febcf Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Wed, 26 Jan 2011 20:09:02 -0800 Subject: hwmon: PMBus device driver This driver adds support for hardware monitoring features of various PMBus devices. Signed-off-by: Guenter Roeck Acked-by: Jonathan Cameron --- include/linux/i2c/pmbus.h | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 include/linux/i2c/pmbus.h (limited to 'include/linux/i2c/pmbus.h') diff --git a/include/linux/i2c/pmbus.h b/include/linux/i2c/pmbus.h new file mode 100644 index 000000000000..69280db02c41 --- /dev/null +++ b/include/linux/i2c/pmbus.h @@ -0,0 +1,45 @@ +/* + * Hardware monitoring driver for PMBus devices + * + * Copyright (c) 2010, 2011 Ericsson AB. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef _PMBUS_H_ +#define _PMBUS_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 (1 << 0) + +struct pmbus_platform_data { + u32 flags; /* Device specific flags */ +}; + +#endif /* _PMBUS_H_ */ -- cgit v1.2.3-59-g8ed1b