Commit 6c84239d authored by Linus Torvalds's avatar Linus Torvalds

Merge tag 'rtc-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "RTC for 4.8

  Cleanups:
   - huge cleanup of rtc-generic and char/genrtc this allowed to cleanup
     rtc-cmos, rtc-sh, rtc-m68k, rtc-powerpc and rtc-parisc
   - move mn10300 to rtc-cmos

  Subsystem:
   - fix wakealarms after hibernate
   - multiples fixes for rctest
   - simplify implementations of .read_alarm

  New drivers:
   - Maxim MAX6916

  Drivers:
   - ds1307: fix weekday
   - m41t80: add wakeup support
   - pcf85063: add support for PCF85063A variant
   - rv8803: extend i2c fix and other fixes
   - s35390a: fix alarm reading, this fixes instant reboot after
     shutdown for QNAP TS-41x
   - s3c: clock fixes"

* tag 'rtc-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (65 commits)
  rtc: rv8803: Clear V1F when setting the time
  rtc: rv8803: Stop the clock while setting the time
  rtc: rv8803: Always apply the I²C workaround
  rtc: rv8803: Fix read day of week
  rtc: rv8803: Remove the check for valid time
  rtc: rv8803: Kconfig: Indicate rx8900 support
  rtc: asm9260: remove .owner field for driver
  rtc: at91sam9: Fix missing spin_lock_init()
  rtc: m41t80: add suspend handlers for alarm IRQ
  rtc: m41t80: make it a real error message
  rtc: pcf85063: Add support for the PCF85063A device
  rtc: pcf85063: fix year range
  rtc: hym8563: in .read_alarm set .tm_sec to 0 to signal minute accuracy
  rtc: explicitly set tm_sec = 0 for drivers with minute accurancy
  rtc: s3c: Add s3c_rtc_{enable/disable}_clk in s3c_rtc_setfreq()
  rtc: s3c: Remove unnecessary call to disable already disabled clock
  rtc: abx80x: use devm_add_action_or_reset()
  rtc: m41t80: use devm_add_action_or_reset()
  rtc: fix a typo and reduce three empty lines to one
  rtc: s35390a: improve two comments in .set_alarm
  ...
parents d4c06c70 6f367788
......@@ -9828,10 +9828,14 @@ L: rtc-linux@googlegroups.com
Q: http://patchwork.ozlabs.org/project/rtc-linux/list/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux.git
S: Maintained
F: Documentation/devicetree/bindings/rtc/
F: Documentation/rtc.txt
F: drivers/rtc/
F: include/linux/rtc.h
F: include/uapi/linux/rtc.h
F: include/linux/rtc/
F: include/linux/platform_data/rtc-*
F: tools/testing/selftests/timers/rtctest.c
REALTEK AUDIO CODECS
M: Bard Liao <bardliao@realtek.com>
......
#include <asm-generic/rtc.h>
......@@ -24,7 +24,6 @@
#include <asm/gct.h>
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#include <asm/rtc.h>
#include <asm/vga.h>
#include "proto.h"
......
......@@ -15,8 +15,6 @@
#include <linux/rtc.h>
#include <linux/platform_device.h>
#include <asm/rtc.h>
#include "proto.h"
......@@ -81,7 +79,7 @@ init_rtc_epoch(void)
static int
alpha_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
__get_rtc_time(tm);
mc146818_get_time(tm);
/* Adjust for non-default epochs. It's easier to depend on the
generic __get_rtc_time and adjust the epoch here than create
......@@ -112,7 +110,7 @@ alpha_rtc_set_time(struct device *dev, struct rtc_time *tm)
tm = &xtm;
}
return __set_rtc_time(tm);
return mc146818_set_time(tm);
}
static int
......
......@@ -16,7 +16,7 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/m48t86.h>
#include <linux/platform_data/rtc-m48t86.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
......
......@@ -16,7 +16,7 @@
#include <linux/platform_device.h>
#include <linux/mv643xx_eth.h>
#include <linux/ata_platform.h>
#include <linux/m48t86.h>
#include <linux/platform_data/rtc-m48t86.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/timeriomem-rng.h>
......
......@@ -14,7 +14,7 @@
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/rtc-v3020.h>
#include <linux/platform_data/rtc-v3020.h>
#include <video/mbxfb.h>
#include <linux/spi/spi.h>
......
......@@ -25,7 +25,7 @@
#include <linux/gpio.h>
#include <linux/dm9000.h>
#include <linux/leds.h>
#include <linux/rtc-v3020.h>
#include <linux/platform_data/rtc-v3020.h>
#include <linux/pwm.h>
#include <linux/pwm_backlight.h>
......
......@@ -14,7 +14,7 @@
#include <linux/delay.h>
#include <linux/dm9000.h>
#include <linux/rtc-v3020.h>
#include <linux/platform_data/rtc-v3020.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
......
/* mc146818rtc.h: RTC defs
*
* Copyright (C) 2005 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 License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_MC146818RTC_H
#define _ASM_MC146818RTC_H
#endif /* _ASM_MC146818RTC_H */
/*
* Machine dependent access functions for RTC registers.
*/
#ifndef _H8300_MC146818RTC_H
#define _H8300_MC146818RTC_H
/* empty include file to satisfy the include in genrtc.c/ide-geometry.c */
#endif /* _H8300_MC146818RTC_H */
#ifndef _ASM_IA64_MC146818RTC_H
#define _ASM_IA64_MC146818RTC_H
/*
* Machine dependent access functions for RTC registers.
*/
/* empty include file to satisfy the include in genrtc.c */
#endif /* _ASM_IA64_MC146818RTC_H */
......@@ -35,7 +35,6 @@
#include <asm/amigahw.h>
#include <asm/amigaints.h>
#include <asm/irq.h>
#include <asm/rtc.h>
#include <asm/machdep.h>
#include <asm/io.h>
......
......@@ -15,7 +15,6 @@
#include <asm/pgtable.h>
#include <asm/apollohw.h>
#include <asm/irq.h>
#include <asm/rtc.h>
#include <asm/machdep.h>
u_long sio01_physaddr;
......
......@@ -34,7 +34,6 @@
#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/traps.h>
#include <asm/rtc.h>
#include <asm/machdep.h>
#include <asm/bvme6000hw.h>
......
......@@ -12,6 +12,7 @@
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/console.h>
#include <linux/rtc.h>
#include <asm/bootinfo.h>
#include <asm/bootinfo-hp300.h>
......@@ -20,7 +21,6 @@
#include <asm/blinken.h>
#include <asm/io.h> /* readb() and writeb() */
#include <asm/hp300hw.h>
#include <asm/rtc.h>
#include "time.h"
......
/* include/asm-m68k/rtc.h
*
* Copyright Richard Zidlicky
* implementation details for genrtc/q40rtc driver
*/
/* permission is hereby granted to copy, modify and redistribute this code
* in terms of the GNU Library General Public License, Version 2 or later,
* at your option.
*/
#ifndef _ASM_RTC_H
#define _ASM_RTC_H
#ifdef __KERNEL__
#include <linux/rtc.h>
#include <asm/errno.h>
#include <asm/machdep.h>
#define RTC_PIE 0x40 /* periodic interrupt enable */
#define RTC_AIE 0x20 /* alarm interrupt enable */
#define RTC_UIE 0x10 /* update-finished interrupt enable */
/* some dummy definitions */
#define RTC_BATT_BAD 0x100 /* battery bad */
#define RTC_SQWE 0x08 /* enable square-wave output */
#define RTC_DM_BINARY 0x04 /* all time/date values are BCD if clear */
#define RTC_24H 0x02 /* 24 hour mode - else hours bit 7 means pm */
#define RTC_DST_EN 0x01 /* auto switch DST - works f. USA only */
static inline unsigned int get_rtc_time(struct rtc_time *time)
{
/*
* Only the values that we read from the RTC are set. We leave
* tm_wday, tm_yday and tm_isdst untouched. Even though the
* RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated
* by the RTC when initially set to a non-zero value.
*/
if (mach_hwclk)
mach_hwclk(0, time);
return RTC_24H;
}
static inline int set_rtc_time(struct rtc_time *time)
{
if (mach_hwclk)
return mach_hwclk(1, time);
return -EINVAL;
}
static inline unsigned int get_rtc_ss(void)
{
if (mach_get_ss)
return mach_get_ss();
else{
struct rtc_time h;
get_rtc_time(&h);
return h.tm_sec;
}
}
static inline int get_rtc_pll(struct rtc_pll_info *pll)
{
if (mach_get_rtc_pll)
return mach_get_rtc_pll(pll);
else
return -EINVAL;
}
static inline int set_rtc_pll(struct rtc_pll_info *pll)
{
if (mach_set_rtc_pll)
return mach_set_rtc_pll(pll);
else
return -EINVAL;
}
#endif /* __KERNEL__ */
#endif /* _ASM__RTC_H */
......@@ -86,7 +86,49 @@ void read_persistent_clock(struct timespec *ts)
}
}
#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET
#if defined(CONFIG_ARCH_USES_GETTIMEOFFSET) && IS_ENABLED(CONFIG_RTC_DRV_GENERIC)
static int rtc_generic_get_time(struct device *dev, struct rtc_time *tm)
{
mach_hwclk(0, tm);
return rtc_valid_tm(tm);
}
static int rtc_generic_set_time(struct device *dev, struct rtc_time *tm)
{
if (mach_hwclk(1, tm) < 0)
return -EOPNOTSUPP;
return 0;
}
static int rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
{
struct rtc_pll_info pll;
struct rtc_pll_info __user *argp = (void __user *)arg;
switch (cmd) {
case RTC_PLL_GET:
if (!mach_get_rtc_pll || mach_get_rtc_pll(&pll))
return -EINVAL;
return copy_to_user(argp, &pll, sizeof pll) ? -EFAULT : 0;
case RTC_PLL_SET:
if (!mach_set_rtc_pll)
return -EINVAL;
if (!capable(CAP_SYS_TIME))
return -EACCES;
if (copy_from_user(&pll, argp, sizeof(pll)))
return -EFAULT;
return mach_set_rtc_pll(&pll);
}
return -ENOIOCTLCMD;
}
static const struct rtc_class_ops generic_rtc_ops = {
.ioctl = rtc_ioctl,
.read_time = rtc_generic_get_time,
.set_time = rtc_generic_set_time,
};
static int __init rtc_init(void)
{
......@@ -95,7 +137,9 @@ static int __init rtc_init(void)
if (!mach_hwclk)
return -ENODEV;
pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0);
pdev = platform_device_register_data(NULL, "rtc-generic", -1,
&generic_rtc_ops,
sizeof(generic_rtc_ops));
return PTR_ERR_OR_ZERO(pdev);
}
......
......@@ -10,6 +10,7 @@
* Miscellaneous linux stuff
*/
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/mm.h>
......@@ -25,6 +26,7 @@
#include <linux/platform_device.h>
#include <linux/adb.h>
#include <linux/cuda.h>
#include <linux/rtc.h>
#include <asm/setup.h>
#include <asm/bootinfo.h>
......@@ -34,7 +36,6 @@
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/pgtable.h>
#include <asm/rtc.h>
#include <asm/machdep.h>
#include <asm/macintosh.h>
......
......@@ -18,7 +18,6 @@
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/rtc.h>
#include <asm/segment.h>
#include <asm/setup.h>
#include <asm/macintosh.h>
......
......@@ -32,7 +32,6 @@
#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/traps.h>
#include <asm/rtc.h>
#include <asm/machdep.h>
#include <asm/mvme147hw.h>
......
......@@ -35,7 +35,6 @@
#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/traps.h>
#include <asm/rtc.h>
#include <asm/machdep.h>
#include <asm/mvme16xhw.h>
......
......@@ -12,6 +12,7 @@
* for more details.
*/
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/mm.h>
......@@ -27,7 +28,6 @@
#include <linux/platform_device.h>
#include <asm/io.h>
#include <asm/rtc.h>
#include <asm/bootinfo.h>
#include <asm/pgtable.h>
#include <asm/setup.h>
......
......@@ -26,7 +26,6 @@
#include <asm/pgalloc.h>
#include <asm/sun3-head.h>
#include <asm/sun3mmu.h>
#include <asm/rtc.h>
#include <asm/machdep.h>
#include <asm/machines.h>
#include <asm/idprom.h>
......
......@@ -14,8 +14,8 @@
#include <linux/rtc.h>
#include <asm/errno.h>
#include <asm/rtc.h>
#include <asm/intersil.h>
#include <asm/machdep.h>
/* bits to set for start/run of the intersil */
......
......@@ -15,10 +15,10 @@
#include <asm/irq.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/traps.h>
#include <asm/sun3x.h>
#include <asm/sun3ints.h>
#include <asm/rtc.h>
#include "time.h"
......
......@@ -7,7 +7,7 @@
*/
#include <linux/linkage.h>
#include <linux/init.h>
#include <linux/ds1286.h>
#include <linux/rtc/ds1286.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
......
......@@ -8,7 +8,6 @@
#include <asm/sni.h>
#include <asm/time.h>
#include <asm-generic/rtc.h>
#define SNI_CLOCK_TICK_RATE 3686400
#define SNI_COUNTER2_DIV 64
......
......@@ -236,7 +236,9 @@ source "kernel/Kconfig.hz"
config MN10300_RTC
bool "Using MN10300 RTC"
depends on MN10300_PROC_MN103E010 || MN10300_PROC_MN2WS0050
select GENERIC_CMOS_UPDATE
select RTC_CLASS
select RTC_DRV_CMOS
select RTC_SYSTOHC
default n
help
This option enables support for the RTC, thus enabling time to be
......
......@@ -75,9 +75,9 @@
#define RTC_PORT(x) 0xd8600000
#define RTC_ALWAYS_BCD 1 /* RTC operates in binary mode */
#define CMOS_READ(addr) __SYSREG(0xd8600000 + (addr), u8)
#define CMOS_READ(addr) __SYSREG(0xd8600000 + (u32)(addr), u8)
#define CMOS_WRITE(val, addr) \
do { __SYSREG(0xd8600000 + (addr), u8) = val; } while (0)
do { __SYSREG(0xd8600000 + (u32)(addr), u8) = val; } while (0)
#define RTC_IRQ RTIRQ
......
......@@ -25,6 +25,4 @@ static inline void calibrate_clock(void)
#endif /* !CONFIG_MN10300_RTC */
#include <asm-generic/rtc.h>
#endif /* _ASM_RTC_H */
......@@ -12,107 +12,19 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/mc146818rtc.h>
#include <linux/bcd.h>
#include <linux/timex.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);
/*
* Read the current RTC time
*/
void read_persistent_clock(struct timespec *ts)
{
struct rtc_time tm;
get_rtc_time(&tm);
ts->tv_nsec = 0;
ts->tv_sec = mktime(tm.tm_year, tm.tm_mon, tm.tm_mday,
tm.tm_hour, tm.tm_min, tm.tm_sec);
/* if rtc is way off in the past, set something reasonable */
if (ts->tv_sec < 0)
ts->tv_sec = mktime(2009, 1, 1, 12, 0, 0);
}
/*
* In order to set the CMOS clock precisely, set_rtc_mmss has to be called 500
* ms after the second nowtime has started, because when nowtime is written
* into the registers of the CMOS clock, it will jump to the next second
* precisely 500 ms later. Check the Motorola MC146818A or Dallas DS12887 data
* sheet for details.
*
* BUG: This routine does not handle hour overflow properly; it just
* sets the minutes. Usually you'll only notice that after reboot!
*/
static int set_rtc_mmss(unsigned long nowtime)
{
unsigned char save_control, save_freq_select;
int retval = 0;
int real_seconds, real_minutes, cmos_minutes;
/* gets recalled with irq locally disabled */
spin_lock(&rtc_lock);
save_control = CMOS_READ(RTC_CONTROL); /* tell the clock it's being
* set */
CMOS_WRITE(save_control | RTC_SET, RTC_CONTROL);
save_freq_select = CMOS_READ(RTC_FREQ_SELECT); /* stop and reset
* prescaler */
CMOS_WRITE(save_freq_select | RTC_DIV_RESET2, RTC_FREQ_SELECT);
cmos_minutes = CMOS_READ(RTC_MINUTES);
if (!(save_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
cmos_minutes = bcd2bin(cmos_minutes);
/*
* since we're only adjusting minutes and seconds,
* don't interfere with hour overflow. This avoids
* messing with unknown time zones but requires your
* RTC not to be off by more than 15 minutes
*/
real_seconds = nowtime % 60;
real_minutes = nowtime / 60;
if (((abs(real_minutes - cmos_minutes) + 15) / 30) & 1)
/* correct for half hour time zone */
real_minutes += 30;
real_minutes %= 60;
if (abs(real_minutes - cmos_minutes) < 30) {
if (!(save_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
real_seconds = bin2bcd(real_seconds);
real_minutes = bin2bcd(real_minutes);
}
CMOS_WRITE(real_seconds, RTC_SECONDS);
CMOS_WRITE(real_minutes, RTC_MINUTES);
} else {
printk_once(KERN_NOTICE
"set_rtc_mmss: can't update from %d to %d\n",
cmos_minutes, real_minutes);
retval = -1;
}
/* The following flags have to be released exactly in this order,
* otherwise the DS12887 (popular MC146818A clone with integrated
* battery and quartz) will not reset the oscillator and will not
* update precisely 500 ms later. You won't find this mentioned in
* the Dallas Semiconductor data sheets, but who believes data
* sheets anyway ... -- Markus Kuhn
*/
CMOS_WRITE(save_control, RTC_CONTROL);
CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT);
spin_unlock(&rtc_lock);
return retval;
}
int update_persistent_clock(struct timespec now)
{
return set_rtc_mmss(now.tv_sec);
}
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
......@@ -129,4 +41,6 @@ void __init calibrate_clock(void)
RTCRA |= RTCRA_DVR;
RTCRA &= ~RTCRA_DVR;
RTCRB &= ~RTCRB_SET;
platform_device_register_simple("rtc_cmos", -1, res, ARRAY_SIZE(res));
}
......@@ -9,7 +9,10 @@
* 2 of the Licence, or (at your option) any later version.
*/
#include <linux/kernel.h>
#include <linux/irq.h>
#include <asm/cacheflush.h>
#include <asm/fpu.h>
#include <asm/irq.h>
#include <asm/rtc.h>
#include <asm/busctl-regs.h>
......
......@@ -14,6 +14,7 @@
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <asm/cacheflush.h>
#include <asm/processor.h>
#include <asm/uaccess.h>
#include <asm/io.h>
......
/*
* Machine dependent access functions for RTC registers.
*/
#ifndef _ASM_MC146818RTC_H
#define _ASM_MC146818RTC_H
/* empty include file to satisfy the include in genrtc.c */
#endif /* _ASM_MC146818RTC_H */
/*
* include/asm-parisc/rtc.h
*
* Copyright 2002 Randolph CHung <tausq@debian.org>
*