From eb86c3064b3c53837fdfea17df1483d825919894 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Tue, 29 May 2012 15:07:38 -0700 Subject: rtc: ds1307: add trickle charger support Some DS13XX devices have "trickle chargers". Its configuration register is at different locations, the setup is the same, though. Since the configuration is board specific, introduce a platform_data to this driver. Tested with a DS1339 on a custom board. Signed-off-by: Wolfram Sang Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rtc/ds1307.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 include/linux/rtc/ds1307.h (limited to 'include/linux/rtc') diff --git a/include/linux/rtc/ds1307.h b/include/linux/rtc/ds1307.h new file mode 100644 index 000000000000..291b1c490367 --- /dev/null +++ b/include/linux/rtc/ds1307.h @@ -0,0 +1,22 @@ +/* + * ds1307.h - platform_data for the ds1307 (and variants) rtc driver + * (C) Copyright 2012 by Wolfram Sang, Pengutronix e.K. + * same license as the driver + */ + +#ifndef _LINUX_DS1307_H +#define _LINUX_DS1307_H + +#include + +#define DS1307_TRICKLE_CHARGER_250_OHM 0x01 +#define DS1307_TRICKLE_CHARGER_2K_OHM 0x02 +#define DS1307_TRICKLE_CHARGER_4K_OHM 0x03 +#define DS1307_TRICKLE_CHARGER_NO_DIODE 0x04 +#define DS1307_TRICKLE_CHARGER_DIODE 0x08 + +struct ds1307_platform_data { + u8 trickle_charger_setup; +}; + +#endif /* _LINUX_DS1307_H */ -- cgit v1.2.3-59-g8ed1b