GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-23 23:21:46 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

[PATCH] Add v3020 RTC support

Browse source 
This patch adds support for the v3020 RTC from EM Microelectronic.

The v3020 RTC is designed to be connected on a bus using only one data bit.
 Since any data bit may be used, it is necessary to specify this to the
driver by passing a struct v3020_platform_data pointer (see
include/linux/rtc-v3020.h) to the driver.

Part of the following code comes from the kernel patchs produced by
Compulab for their products.  The original file (available here:
http://raph.people.8d.com/misc/emv3020.c) was released under the terms of
the GPL license.

[akpm@osdl.org: cleanups]
Signed-off-by: Raphael Assenat <raph@raphnet.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Raphael Assenat 2006-06-25 05:48:24 -07:00 • committed by Linus Torvalds
parent 9be05b57bd
commit 362600fe60
4 changed files with 310 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

35
include/linux/rtc-v3020.h Normal file
View file

@ -0,0 +1,35 @@
/*
* v3020.h - Registers definition and platform data structure for the v3020 RTC.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2006, 8D Technologies inc.
*/
#ifndef __LINUX_V3020_H
#define __LINUX_V3020_H
/* The v3020 has only one data pin but which one
* is used depends on the board. */
struct v3020_platform_data {
int leftshift; /* (1<<(leftshift)) & readl() */
};
#define V3020_STATUS_0 0x00
#define V3020_STATUS_1 0x01
#define V3020_SECONDS 0x02
#define V3020_MINUTES 0x03
#define V3020_HOURS 0x04
#define V3020_MONTH_DAY 0x05
#define V3020_MONTH 0x06
#define V3020_YEAR 0x07
#define V3020_WEEK_DAY 0x08
#define V3020_WEEK 0x09
#define V3020_IS_COMMAND(val) ((val)>=0x0E)
#define V3020_CMD_RAM2CLOCK 0x0E
#define V3020_CMD_CLOCK2RAM 0x0F
#endif /* __LINUX_V3020_H */