mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 01:54:09 +08:00
5ee98ab3a8
nn10300 has a dependency on mc146818_get_time/mc146818_set_time, which we want to move from the mc146818rtc.h header into the rtc subsystem, which in turn is not usable on mn10300. This changes mn10300 to use the modern rtc-cmos driver instead of the old RTC driver, and that in turn lets us completely remove the read_persistent_clock/update_persistent_clock callbacks. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/* MN10300 RTC management
|
|
*
|
|
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public Licence
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the Licence, or (at your option) any later version.
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/mc146818rtc.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <asm/rtc-regs.h>
|
|
#include <asm/rtc.h>
|
|
|
|
DEFINE_SPINLOCK(rtc_lock);
|
|
EXPORT_SYMBOL(rtc_lock);
|
|
|
|
static const __initdata struct resource res[] = {
|
|
DEFINE_RES_IO(RTC_PORT(0), RTC_IO_EXTENT),
|
|
DEFINE_RES_IRQ(RTC_IRQ),
|
|
};
|
|
|
|
/*
|
|
* calibrate the TSC clock against the RTC
|
|
*/
|
|
void __init calibrate_clock(void)
|
|
{
|
|
unsigned char status;
|
|
|
|
/* make sure the RTC is running and is set to operate in 24hr mode */
|
|
status = RTSRC;
|
|
RTCRB |= RTCRB_SET;
|
|
RTCRB |= RTCRB_TM_24HR;
|
|
RTCRB &= ~RTCRB_DM_BINARY;
|
|
RTCRA |= RTCRA_DVR;
|
|
RTCRA &= ~RTCRA_DVR;
|
|
RTCRB &= ~RTCRB_SET;
|
|
|
|
platform_device_register_simple("rtc_cmos", -1, res, ARRAY_SIZE(res));
|
|
}
|