test/dm/rtc.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2015 Google, Inc
   4  * Written by Simon Glass <sjg@chromium.org>
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9 #include <i2c.h>
  10 #include <rtc.h>
  11 #include <asm/io.h>
  12 #include <asm/test.h>
  13 #include <dm/test.h>
  14 #include <test/ut.h>
  15
  16 /* Simple RTC sanity check */
  17 static int dm_test_rtc_base(struct unit_test_state *uts)
  18 {
  19         struct udevice *dev;
  20
  21         ut_asserteq(-ENODEV, uclass_get_device_by_seq(UCLASS_RTC, 2, &dev));
  22         ut_assertok(uclass_get_device(UCLASS_RTC, 0, &dev));
  23         ut_assertok(uclass_get_device(UCLASS_RTC, 1, &dev));
  24
  25         return 0;
  26 }
  27 DM_TEST(dm_test_rtc_base, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
  28
  29 static void show_time(const char *msg, struct rtc_time *time)
  30 {
  31         printf("%s: %02d/%02d/%04d %02d:%02d:%02d\n", msg,
  32                time->tm_mday, time->tm_mon, time->tm_year,
  33                time->tm_hour, time->tm_min, time->tm_sec);
  34 }
  35
  36 static int cmp_times(struct rtc_time *expect, struct rtc_time *time, bool show)
  37 {
  38         bool same;
  39
  40         same = expect->tm_sec == time->tm_sec;
  41         same &= expect->tm_min == time->tm_min;
  42         same &= expect->tm_hour == time->tm_hour;
  43         same &= expect->tm_mday == time->tm_mday;
  44         same &= expect->tm_mon == time->tm_mon;
  45         same &= expect->tm_year == time->tm_year;
  46         if (!same && show) {
  47                 show_time("expected", expect);
  48                 show_time("actual", time);
  49         }
  50
  51         return same ? 0 : -EINVAL;
  52 }
  53
  54 /* Set and get the time */
  55 static int dm_test_rtc_set_get(struct unit_test_state *uts)
  56 {
  57         struct rtc_time now, time, cmp;
  58         struct udevice *dev, *emul;
  59         long offset, old_offset, old_base_time;
  60
  61         ut_assertok(uclass_get_device(UCLASS_RTC, 0, &dev));
  62         ut_assertok(dm_rtc_get(dev, &now));
  63
  64         ut_assertok(i2c_emul_find(dev, &emul));
  65         ut_assert(emul != NULL);
  66
  67         /* Tell the RTC to go into manual mode */
  68         old_offset = sandbox_i2c_rtc_set_offset(emul, false, 0);
  69         old_base_time = sandbox_i2c_rtc_get_set_base_time(emul, -1);
  70
  71         memset(&time, '\0', sizeof(time));
  72         time.tm_mday = 25;
  73         time.tm_mon = 8;
  74         time.tm_year = 2004;
  75         time.tm_sec = 0;
  76         time.tm_min = 18;
  77         time.tm_hour = 18;
  78         ut_assertok(dm_rtc_set(dev, &time));
  79
  80         memset(&cmp, '\0', sizeof(cmp));
  81         ut_assertok(dm_rtc_get(dev, &cmp));
  82         ut_assertok(cmp_times(&time, &cmp, true));
  83
  84         /* Increment by 1 second */
  85         offset = sandbox_i2c_rtc_set_offset(emul, false, 0);
  86         sandbox_i2c_rtc_set_offset(emul, false, offset + 1);
  87
  88         memset(&cmp, '\0', sizeof(cmp));
  89         ut_assertok(dm_rtc_get(dev, &cmp));
  90         ut_asserteq(1, cmp.tm_sec);
  91
  92         /* Check against original offset */
  93         sandbox_i2c_rtc_set_offset(emul, false, old_offset);
  94         ut_assertok(dm_rtc_get(dev, &cmp));
  95         ut_assertok(cmp_times(&now, &cmp, true));
  96
  97         /* Back to the original offset */
  98         sandbox_i2c_rtc_set_offset(emul, false, 0);
  99         memset(&cmp, '\0', sizeof(cmp));
 100         ut_assertok(dm_rtc_get(dev, &cmp));
 101         ut_assertok(cmp_times(&now, &cmp, true));
 102
 103         /* Increment the base time by 1 emul */
 104         sandbox_i2c_rtc_get_set_base_time(emul, old_base_time + 1);
 105         memset(&cmp, '\0', sizeof(cmp));
 106         ut_assertok(dm_rtc_get(dev, &cmp));
 107         if (now.tm_sec == 59) {
 108                 ut_asserteq(0, cmp.tm_sec);
 109         } else {
 110                 ut_asserteq(now.tm_sec + 1, cmp.tm_sec);
 111         }
 112
 113         old_offset = sandbox_i2c_rtc_set_offset(emul, true, 0);
 114
 115         return 0;
 116 }
 117 DM_TEST(dm_test_rtc_set_get, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
 118
 119 /* Reset the time */
 120 static int dm_test_rtc_reset(struct unit_test_state *uts)
 121 {
 122         struct rtc_time now;
 123         struct udevice *dev, *emul;
 124         long old_base_time, base_time;
 125
 126         ut_assertok(uclass_get_device(UCLASS_RTC, 0, &dev));
 127         ut_assertok(dm_rtc_get(dev, &now));
 128
 129         ut_assertok(i2c_emul_find(dev, &emul));
 130         ut_assert(emul != NULL);
 131
 132         old_base_time = sandbox_i2c_rtc_get_set_base_time(emul, 0);
 133
 134         ut_asserteq(0, sandbox_i2c_rtc_get_set_base_time(emul, -1));
 135
 136         /* Resetting the RTC should put he base time back to normal */
 137         ut_assertok(dm_rtc_reset(dev));
 138         base_time = sandbox_i2c_rtc_get_set_base_time(emul, -1);
 139         ut_asserteq(old_base_time, base_time);
 140
 141         return 0;
 142 }
 143 DM_TEST(dm_test_rtc_reset, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
 144
 145 /* Check that two RTC devices can be used independently */
 146 static int dm_test_rtc_dual(struct unit_test_state *uts)
 147 {
 148         struct rtc_time now1, now2, cmp;
 149         struct udevice *dev1, *dev2;
 150         struct udevice *emul1, *emul2;
 151         long offset;
 152
 153         ut_assertok(uclass_get_device(UCLASS_RTC, 0, &dev1));
 154         ut_assertok(dm_rtc_get(dev1, &now1));
 155         ut_assertok(uclass_get_device(UCLASS_RTC, 1, &dev2));
 156         ut_assertok(dm_rtc_get(dev2, &now2));
 157
 158         ut_assertok(i2c_emul_find(dev1, &emul1));
 159         ut_assert(emul1 != NULL);
 160         ut_assertok(i2c_emul_find(dev2, &emul2));
 161         ut_assert(emul2 != NULL);
 162
 163         offset = sandbox_i2c_rtc_set_offset(emul1, false, -1);
 164         sandbox_i2c_rtc_set_offset(emul2, false, offset + 1);
 165         memset(&cmp, '\0', sizeof(cmp));
 166         ut_assertok(dm_rtc_get(dev2, &cmp));
 167         ut_asserteq(-EINVAL, cmp_times(&now1, &cmp, false));
 168
 169         memset(&cmp, '\0', sizeof(cmp));
 170         ut_assertok(dm_rtc_get(dev1, &cmp));
 171         ut_assertok(cmp_times(&now1, &cmp, true));
 172
 173         return 0;
 174 }
 175 DM_TEST(dm_test_rtc_dual, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);