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authorLinus Torvalds <torvalds@linux-foundation.org>2016-08-05 09:48:22 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2016-08-05 09:48:22 -0400
commit6c84239d595dc6ffe39f0f03dae2f64ed200db95 (patch)
tree3aea4368a644be16e44612c964aa26152854e1ae /arch/parisc
parentd4c06c708123c652025d04fe77b7e39448077395 (diff)
parent6f367788d6333a41fefd013975b0b160d5c0a1c8 (diff)
downloadlinux-6c84239d595dc6ffe39f0f03dae2f64ed200db95.tar.bz2
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 ...
Diffstat (limited to 'arch/parisc')
-rw-r--r--arch/parisc/include/asm/mc146818rtc.h9
-rw-r--r--arch/parisc/include/asm/rtc.h131
-rw-r--r--arch/parisc/kernel/time.c36
3 files changed, 35 insertions, 141 deletions
diff --git a/arch/parisc/include/asm/mc146818rtc.h b/arch/parisc/include/asm/mc146818rtc.h
deleted file mode 100644
index adf41631449f..000000000000
--- a/arch/parisc/include/asm/mc146818rtc.h
+++ /dev/null
@@ -1,9 +0,0 @@
-/*
- * 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 */
diff --git a/arch/parisc/include/asm/rtc.h b/arch/parisc/include/asm/rtc.h
deleted file mode 100644
index 099d641a42c2..000000000000
--- a/arch/parisc/include/asm/rtc.h
+++ /dev/null
@@ -1,131 +0,0 @@
-/*
- * include/asm-parisc/rtc.h
- *
- * Copyright 2002 Randolph CHung <tausq@debian.org>
- *
- * Based on: include/asm-ppc/rtc.h and the genrtc driver in the
- * 2.4 parisc linux tree
- */
-
-#ifndef __ASM_RTC_H__
-#define __ASM_RTC_H__
-
-#ifdef __KERNEL__
-
-#include <linux/rtc.h>
-
-#include <asm/pdc.h>
-
-#define SECS_PER_HOUR (60 * 60)
-#define SECS_PER_DAY (SECS_PER_HOUR * 24)
-
-
-#define RTC_PIE 0x40 /* periodic interrupt enable */
-#define RTC_AIE 0x20 /* alarm interrupt enable */
-#define RTC_UIE 0x10 /* update-finished interrupt enable */
-
-#define RTC_BATT_BAD 0x100 /* battery bad */
-
-/* some dummy definitions */
-#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 */
-
-# define __isleap(year) \
- ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
-
-/* How many days come before each month (0-12). */
-static const unsigned short int __mon_yday[2][13] =
-{
- /* Normal years. */
- { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
- /* Leap years. */
- { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
-};
-
-static inline unsigned int get_rtc_time(struct rtc_time *wtime)
-{
- struct pdc_tod tod_data;
- long int days, rem, y;
- const unsigned short int *ip;
-
- memset(wtime, 0, sizeof(*wtime));
- if (pdc_tod_read(&tod_data) < 0)
- return RTC_24H | RTC_BATT_BAD;
-
- // most of the remainder of this function is:
-// Copyright (C) 1991, 1993, 1997, 1998 Free Software Foundation, Inc.
-// This was originally a part of the GNU C Library.
-// It is distributed under the GPL, and was swiped from offtime.c
-
-
- days = tod_data.tod_sec / SECS_PER_DAY;
- rem = tod_data.tod_sec % SECS_PER_DAY;
-
- wtime->tm_hour = rem / SECS_PER_HOUR;
- rem %= SECS_PER_HOUR;
- wtime->tm_min = rem / 60;
- wtime->tm_sec = rem % 60;
-
- y = 1970;
-
-#define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
-#define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400))
-
- while (days < 0 || days >= (__isleap (y) ? 366 : 365))
- {
- /* Guess a corrected year, assuming 365 days per year. */
- long int yg = y + days / 365 - (days % 365 < 0);
-
- /* Adjust DAYS and Y to match the guessed year. */
- days -= ((yg - y) * 365
- + LEAPS_THRU_END_OF (yg - 1)
- - LEAPS_THRU_END_OF (y - 1));
- y = yg;
- }
- wtime->tm_year = y - 1900;
-
- ip = __mon_yday[__isleap(y)];
- for (y = 11; days < (long int) ip[y]; --y)
- continue;
- days -= ip[y];
- wtime->tm_mon = y;
- wtime->tm_mday = days + 1;
-
- return RTC_24H;
-}
-
-static int set_rtc_time(struct rtc_time *wtime)
-{
- u_int32_t secs;
-
- secs = mktime(wtime->tm_year + 1900, wtime->tm_mon + 1, wtime->tm_mday,
- wtime->tm_hour, wtime->tm_min, wtime->tm_sec);
-
- if(pdc_tod_set(secs, 0) < 0)
- return -1;
- else
- return 0;
-
-}
-
-static inline unsigned int get_rtc_ss(void)
-{
- struct rtc_time h;
-
- get_rtc_time(&h);
- return h.tm_sec;
-}
-
-static inline int get_rtc_pll(struct rtc_pll_info *pll)
-{
- return -EINVAL;
-}
-static inline int set_rtc_pll(struct rtc_pll_info *pll)
-{
- return -EINVAL;
-}
-
-#endif /* __KERNEL__ */
-#endif /* __ASM_RTC_H__ */
diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c
index 31ec99a5f119..505cf1ac5af2 100644
--- a/arch/parisc/kernel/time.c
+++ b/arch/parisc/kernel/time.c
@@ -12,6 +12,7 @@
*/
#include <linux/errno.h>
#include <linux/module.h>
+#include <linux/rtc.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/param.h>
@@ -248,14 +249,47 @@ void __init start_cpu_itimer(void)
per_cpu(cpu_data, cpu).it_value = next_tick;
}
+#if IS_ENABLED(CONFIG_RTC_DRV_GENERIC)
+static int rtc_generic_get_time(struct device *dev, struct rtc_time *tm)
+{
+ struct pdc_tod tod_data;
+
+ memset(tm, 0, sizeof(*tm));
+ if (pdc_tod_read(&tod_data) < 0)
+ return -EOPNOTSUPP;
+
+ /* we treat tod_sec as unsigned, so this can work until year 2106 */
+ rtc_time64_to_tm(tod_data.tod_sec, tm);
+ return rtc_valid_tm(tm);
+}
+
+static int rtc_generic_set_time(struct device *dev, struct rtc_time *tm)
+{
+ time64_t secs = rtc_tm_to_time64(tm);
+
+ if (pdc_tod_set(secs, 0) < 0)
+ return -EOPNOTSUPP;
+
+ return 0;
+}
+
+static const struct rtc_class_ops rtc_generic_ops = {
+ .read_time = rtc_generic_get_time,
+ .set_time = rtc_generic_set_time,
+};
+
static int __init rtc_init(void)
{
struct platform_device *pdev;
- pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0);
+ pdev = platform_device_register_data(NULL, "rtc-generic", -1,
+ &rtc_generic_ops,
+ sizeof(rtc_generic_ops));
+
return PTR_ERR_OR_ZERO(pdev);
}
device_initcall(rtc_init);
+#endif
void read_persistent_clock(struct timespec *ts)
{