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Merge tag 'rtc-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Browse Source 
Pull RTC updates from Alexandre Belloni:
 "Here is the pull-request for the RTC subsystem for 4.13.

  Subsystem:

   - expose non volatile RAM using nvmem instead of open coding in many
     drivers. Unfortunately, this option has to be enabled by default to
     not break existing users.

   - rtctest can now test for cutoff dates, showing when an RTC will
     start failing to properly save time and date.

   - new RTC registration functions to remove race conditions in drivers

  Newly supported RTCs:

   - Broadcom STB wake-timer

   - Epson RX8130CE

   - Maxim IC DS1308

   - STMicroelectronics STM32H7

  Drivers:

   - ds1307: use regmap, use nvmem, more cleanups

   - ds3232: temperature reading support

   - gemini: renamed to ftrtc010

   - m41t80: use CCF to expose the clock

   - rv8803: use nvmem

   - s3c: many cleanups

   - st-lpc: fix y2106 bug"

* tag 'rtc-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (51 commits)
  rtc: Remove wrong deprecation comment
  nvmem: include linux/err.h from header
  rtc: st-lpc: make it robust against y2038/2106 bug
  rtc: rtctest: add check for problematic dates
  tools: timer: add rtctest_setdate
  rtc: ds1307: remove ds1307_remove
  rtc: ds1307: use generic nvmem
  rtc: ds1307: switch to rtc_register_device
  rtc: rv8803: remove rv8803_remove
  rtc: rv8803: use generic nvmem support
  rtc: rv8803: switch to rtc_register_device
  rtc: add generic nvmem support
  rtc: at91rm9200: remove race condition
  rtc: introduce new registration method
  rtc: class separate id allocation from registration
  rtc: class separate device allocation from registration
  rtc: stm32: add STM32H7 RTC support
  dt-bindings: rtc: stm32: add support for STM32H7
  rtc: ds1307: add ds1308 variant
  rtc: ds3232: add temperature support
  ...
This commit is contained in:
Linus Torvalds
2017-07-13 12:15:06 -07:00
parent b5e16170f5 40bf6a3548
commit 3a00be1923
33 changed files with 2040 additions and 905 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
tools/testing/selftests/timers/Makefile
View File

@ -9,7 +9,7 @@ TEST_GEN_PROGS = posix_timers nanosleep nsleep-lat set-timer-lat mqueue-lat \
TEST_GEN_PROGS_EXTENDED = alarmtimer-suspend valid-adjtimex adjtick change_skew \
skew_consistency clocksource-switch freq-step leap-a-day \
leapcrash set-tai set-2038 set-tz
leapcrash set-tai set-2038 set-tz rtctest_setdate
include ../lib.mk

128
tools/testing/selftests/timers/rtctest.c
View File

@ -21,6 +21,9 @@
#include <stdlib.h>
#include <errno.h>
#ifndef ARRAY_SIZE
# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#endif
/*
* This expects the new RTC class driver framework, working with
@ -29,23 +32,84 @@
*/
static const char default_rtc[] = "/dev/rtc0";
static struct rtc_time cutoff_dates[] = {
{
.tm_year = 70, /* 1970 -1900 */
.tm_mday = 1,
},
/* signed time_t 19/01/2038 3:14:08 */
{
.tm_year = 138,
.tm_mday = 19,
},
{
.tm_year = 138,
.tm_mday = 20,
},
{
.tm_year = 199, /* 2099 -1900 */
.tm_mday = 1,
},
{
.tm_year = 200, /* 2100 -1900 */
.tm_mday = 1,
},
/* unsigned time_t 07/02/2106 7:28:15*/
{
.tm_year = 205,
.tm_mon = 1,
.tm_mday = 7,
},
{
.tm_year = 206,
.tm_mon = 1,
.tm_mday = 8,
},
/* signed time on 64bit in nanoseconds 12/04/2262 01:47:16*/
{
.tm_year = 362,
.tm_mon = 3,
.tm_mday = 12,
},
{
.tm_year = 362, /* 2262 -1900 */
.tm_mon = 3,
.tm_mday = 13,
},
};
static int compare_dates(struct rtc_time *a, struct rtc_time *b)
{
if (a->tm_year != b->tm_year ||
a->tm_mon != b->tm_mon ||
a->tm_mday != b->tm_mday ||
a->tm_hour != b->tm_hour ||
a->tm_min != b->tm_min ||
((b->tm_sec - a->tm_sec) > 1))
return 1;
return 0;
}
int main(int argc, char **argv)
{
int i, fd, retval, irqcount = 0;
int i, fd, retval, irqcount = 0, dangerous = 0;
unsigned long tmp, data;
struct rtc_time rtc_tm;
const char *rtc = default_rtc;
struct timeval start, end, diff;
switch (argc) {
case 3:
if (*argv[2] == 'd')
dangerous = 1;
case 2:
rtc = argv[1];
/* FALLTHROUGH */
case 1:
break;
default:
fprintf(stderr, "usage: rtctest [rtcdev]\n");
fprintf(stderr, "usage: rtctest [rtcdev] [d]\n");
return 1;
}
@ -202,7 +266,7 @@ test_PIE:
/* not all RTCs support periodic IRQs */
if (errno == EINVAL) {
fprintf(stderr, "\nNo periodic IRQ support\n");
goto done;
goto test_DATE;
}
perror("RTC_IRQP_READ ioctl");
exit(errno);
@ -221,7 +285,7 @@ test_PIE:
if (errno == EINVAL) {
fprintf(stderr,
"\n...Periodic IRQ rate is fixed\n");
goto done;
goto test_DATE;
}
perror("RTC_IRQP_SET ioctl");
exit(errno);
@ -269,6 +333,62 @@ test_PIE:
}
}
test_DATE:
if (!dangerous)
goto done;
fprintf(stderr, "\nTesting problematic dates\n");
for (i = 0; i < ARRAY_SIZE(cutoff_dates); i++) {
struct rtc_time current;
/* Write the new date in RTC */
retval = ioctl(fd, RTC_SET_TIME, &cutoff_dates[i]);
if (retval == -1) {
perror("RTC_SET_TIME ioctl");
close(fd);
exit(errno);
}
/* Read back */
retval = ioctl(fd, RTC_RD_TIME, &current);
if (retval == -1) {
perror("RTC_RD_TIME ioctl");
exit(errno);
}
if(compare_dates(&cutoff_dates[i], &current)) {
fprintf(stderr,"Setting date %d failed\n",
cutoff_dates[i].tm_year + 1900);
goto done;
}
cutoff_dates[i].tm_sec += 5;
/* Write the new alarm in RTC */
retval = ioctl(fd, RTC_ALM_SET, &cutoff_dates[i]);
if (retval == -1) {
perror("RTC_ALM_SET ioctl");
close(fd);
exit(errno);
}
/* Read back */
retval = ioctl(fd, RTC_ALM_READ, &current);
if (retval == -1) {
perror("RTC_ALM_READ ioctl");
exit(errno);
}
if(compare_dates(&cutoff_dates[i], &current)) {
fprintf(stderr,"Setting alarm %d failed\n",
cutoff_dates[i].tm_year + 1900);
goto done;
}
fprintf(stderr, "Setting year %d is OK \n",
cutoff_dates[i].tm_year + 1900);
}
done:
fprintf(stderr, "\n\n\t\t\t *** Test complete ***\n");

86
tools/testing/selftests/timers/rtctest_setdate.c Normal file
View File

@ -0,0 +1,86 @@
/* Real Time Clock Driver Test
* by: Benjamin Gaignard (benjamin.gaignard@linaro.org)
*
* To build
* gcc rtctest_setdate.c -o rtctest_setdate
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <stdio.h>
#include <linux/rtc.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
static const char default_time[] = "00:00:00";
int main(int argc, char **argv)
{
int fd, retval;
struct rtc_time new, current;
const char *rtc, *date;
const char *time = default_time;
switch (argc) {
case 4:
time = argv[3];
/* FALLTHROUGH */
case 3:
date = argv[2];
rtc = argv[1];
break;
default:
fprintf(stderr, "usage: rtctest_setdate <rtcdev> <DD-MM-YYYY> [HH:MM:SS]\n");
return 1;
}
fd = open(rtc, O_RDONLY);
if (fd == -1) {
perror(rtc);
exit(errno);
}
sscanf(date, "%d-%d-%d", &new.tm_mday, &new.tm_mon, &new.tm_year);
new.tm_mon -= 1;
new.tm_year -= 1900;
sscanf(time, "%d:%d:%d", &new.tm_hour, &new.tm_min, &new.tm_sec);
fprintf(stderr, "Test will set RTC date/time to %d-%d-%d, %02d:%02d:%02d.\n",
new.tm_mday, new.tm_mon + 1, new.tm_year + 1900,
new.tm_hour, new.tm_min, new.tm_sec);
/* Write the new date in RTC */
retval = ioctl(fd, RTC_SET_TIME, &new);
if (retval == -1) {
perror("RTC_SET_TIME ioctl");
close(fd);
exit(errno);
}
/* Read back */
retval = ioctl(fd, RTC_RD_TIME, &current);
if (retval == -1) {
perror("RTC_RD_TIME ioctl");
exit(errno);
}
fprintf(stderr, "\n\nCurrent RTC date/time is %d-%d-%d, %02d:%02d:%02d.\n",
current.tm_mday, current.tm_mon + 1, current.tm_year + 1900,
current.tm_hour, current.tm_min, current.tm_sec);
close(fd);
return 0;
}