[U-Boot] [PATCH 20/20] dm: rtc: Add tests for real-time clocks
Simon Glass
sjg at chromium.org
Mon Apr 20 20:37:31 CEST 2015
Add some simple tests to verify that the RTC uclass works correctly in
U-Boot.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
test/dm/Makefile | 1 +
test/dm/rtc.c | 175 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
test/dm/test.dts | 18 ++++++
3 files changed, 194 insertions(+)
create mode 100644 test/dm/rtc.c
diff --git a/test/dm/Makefile b/test/dm/Makefile
index fd9e29f..a0cc2c6 100644
--- a/test/dm/Makefile
+++ b/test/dm/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_DM_ETH) += eth.o
obj-$(CONFIG_DM_GPIO) += gpio.o
obj-$(CONFIG_DM_I2C) += i2c.o
obj-$(CONFIG_DM_PCI) += pci.o
+obj-$(CONFIG_DM_RTC) += rtc.o
obj-$(CONFIG_DM_SPI_FLASH) += sf.o
obj-$(CONFIG_DM_SPI) += spi.o
obj-$(CONFIG_DM_USB) += usb.o
diff --git a/test/dm/rtc.c b/test/dm/rtc.c
new file mode 100644
index 0000000..9397cf7
--- /dev/null
+++ b/test/dm/rtc.c
@@ -0,0 +1,175 @@
+/*
+ * Copyright (C) 2015 Google, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ * Written by Simon Glass <sjg at chromium.org>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <rtc.h>
+#include <asm/io.h>
+#include <dm/test.h>
+#include <dm/ut.h>
+#include <asm/test.h>
+
+/* Simple RTC sanity check */
+static int dm_test_rtc_base(struct dm_test_state *dms)
+{
+ struct udevice *dev;
+
+ ut_asserteq(-ENODEV, uclass_get_device_by_seq(UCLASS_RTC, 2, &dev));
+ ut_assertok(uclass_get_device(UCLASS_RTC, 0, &dev));
+ ut_assertok(uclass_get_device(UCLASS_RTC, 1, &dev));
+
+ return 0;
+}
+DM_TEST(dm_test_rtc_base, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+static void show_time(const char *msg, struct rtc_time *time)
+{
+ printf("%s: %02d/%02d/%04d %02d:%02d:%02d\n", msg,
+ time->tm_mday, time->tm_mon, time->tm_year,
+ time->tm_hour, time->tm_min, time->tm_sec);
+}
+
+static int cmp_times(struct rtc_time *expect, struct rtc_time *time, bool show)
+{
+ bool same;
+
+ same = expect->tm_sec == time->tm_sec;
+ same &= expect->tm_min == time->tm_min;
+ same &= expect->tm_hour == time->tm_hour;
+ same &= expect->tm_mday == time->tm_mday;
+ same &= expect->tm_mon == time->tm_mon;
+ same &= expect->tm_year == time->tm_year;
+ if (!same && show) {
+ show_time("expected", expect);
+ show_time("actual", time);
+ }
+
+ return same ? 0 : -EINVAL;
+}
+
+/* Set and get the time */
+static int dm_test_rtc_set_get(struct dm_test_state *dms)
+{
+ struct rtc_time now, time, cmp;
+ struct udevice *dev, *emul;
+ long offset, old_offset, old_base_time;
+
+ ut_assertok(uclass_get_device(UCLASS_RTC, 0, &dev));
+ ut_assertok(dm_rtc_get(dev, &now));
+
+ ut_assertok(device_find_first_child(dev, &emul));
+ ut_assert(emul != NULL);
+
+ /* Tell the RTC to go into manual mode */
+ old_offset = sandbox_i2c_rtc_set_offset(emul, false, 0);
+ old_base_time = sandbox_i2c_rtc_get_set_base_time(emul, -1);
+
+ memset(&time, '\0', sizeof(time));
+ time.tm_mday = 25;
+ time.tm_mon = 8;
+ time.tm_year = 2004;
+ time.tm_sec = 0;
+ time.tm_min = 18;
+ time.tm_hour = 18;
+ ut_assertok(dm_rtc_set(dev, &time));
+
+ memset(&cmp, '\0', sizeof(cmp));
+ ut_assertok(dm_rtc_get(dev, &cmp));
+ ut_assertok(cmp_times(&time, &cmp, true));
+
+ /* Increment by 1 second */
+ offset = sandbox_i2c_rtc_set_offset(emul, false, 0);
+ sandbox_i2c_rtc_set_offset(emul, false, offset + 1);
+
+ memset(&cmp, '\0', sizeof(cmp));
+ ut_assertok(dm_rtc_get(dev, &cmp));
+ ut_asserteq(1, cmp.tm_sec);
+
+ /* Check against original offset */
+ sandbox_i2c_rtc_set_offset(emul, false, old_offset);
+ ut_assertok(dm_rtc_get(dev, &cmp));
+ ut_assertok(cmp_times(&now, &cmp, true));
+
+ /* Back to the original offset */
+ sandbox_i2c_rtc_set_offset(emul, false, 0);
+ memset(&cmp, '\0', sizeof(cmp));
+ ut_assertok(dm_rtc_get(dev, &cmp));
+ ut_assertok(cmp_times(&now, &cmp, true));
+
+ /* Increment the base time by 1 emul */
+ sandbox_i2c_rtc_get_set_base_time(emul, old_base_time + 1);
+ memset(&cmp, '\0', sizeof(cmp));
+ ut_assertok(dm_rtc_get(dev, &cmp));
+ if (now.tm_sec == 59) {
+ ut_asserteq(0, cmp.tm_sec);
+ } else {
+ ut_asserteq(now.tm_sec + 1, cmp.tm_sec);
+ }
+
+ old_offset = sandbox_i2c_rtc_set_offset(emul, true, 0);
+
+ return 0;
+}
+DM_TEST(dm_test_rtc_set_get, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/* Reset the time */
+static int dm_test_rtc_reset(struct dm_test_state *dms)
+{
+ struct rtc_time now;
+ struct udevice *dev, *emul;
+ long old_base_time, base_time;
+
+ ut_assertok(uclass_get_device(UCLASS_RTC, 0, &dev));
+ ut_assertok(dm_rtc_get(dev, &now));
+
+ ut_assertok(device_find_first_child(dev, &emul));
+ ut_assert(emul != NULL);
+
+ old_base_time = sandbox_i2c_rtc_get_set_base_time(emul, 0);
+
+ ut_asserteq(0, sandbox_i2c_rtc_get_set_base_time(emul, -1));
+
+ /* Resetting the RTC should put he base time back to normal */
+ ut_assertok(dm_rtc_reset(dev));
+ base_time = sandbox_i2c_rtc_get_set_base_time(emul, -1);
+ ut_asserteq(old_base_time, base_time);
+
+ return 0;
+}
+DM_TEST(dm_test_rtc_reset, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/* Check that two RTC devices can be used independently */
+static int dm_test_rtc_dual(struct dm_test_state *dms)
+{
+ struct rtc_time now1, now2, cmp;
+ struct udevice *dev1, *dev2;
+ struct udevice *emul1, *emul2;
+ long offset;
+
+ ut_assertok(uclass_get_device(UCLASS_RTC, 0, &dev1));
+ ut_assertok(dm_rtc_get(dev1, &now1));
+ ut_assertok(uclass_get_device(UCLASS_RTC, 1, &dev2));
+ ut_assertok(dm_rtc_get(dev2, &now2));
+
+ ut_assertok(device_find_first_child(dev1, &emul1));
+ ut_assert(emul1 != NULL);
+ ut_assertok(device_find_first_child(dev2, &emul2));
+ ut_assert(emul2 != NULL);
+
+ offset = sandbox_i2c_rtc_set_offset(emul1, false, -1);
+ sandbox_i2c_rtc_set_offset(emul2, false, offset + 1);
+ memset(&cmp, '\0', sizeof(cmp));
+ ut_assertok(dm_rtc_get(dev2, &cmp));
+ ut_asserteq(-EINVAL, cmp_times(&now1, &cmp, false));
+
+ memset(&cmp, '\0', sizeof(cmp));
+ ut_assertok(dm_rtc_get(dev1, &cmp));
+ ut_assertok(cmp_times(&now1, &cmp, true));
+
+ return 0;
+}
+DM_TEST(dm_test_rtc_dual, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
diff --git a/test/dm/test.dts b/test/dm/test.dts
index dd6d0ac..0085848 100644
--- a/test/dm/test.dts
+++ b/test/dm/test.dts
@@ -20,6 +20,8 @@
testfdt5 = "/some-bus/c-test at 5";
testfdt6 = "/e-test";
testfdt8 = "/a-test";
+ rtc0 = &rtc_0;
+ rtc1 = &rtc_1;
usb0 = &usb_0;
usb1 = &usb_1;
usb2 = &usb_2;
@@ -139,6 +141,22 @@
sandbox,size = <256>;
};
};
+
+ rtc_0: rtc at 43 {
+ reg = <0x43>;
+ compatible = "sandbox-rtc";
+ emul {
+ compatible = "sandbox,i2c-rtc";
+ };
+ };
+
+ rtc_1: rtc at 61 {
+ reg = <0x61>;
+ compatible = "sandbox-rtc";
+ emul {
+ compatible = "sandbox,i2c-rtc";
+ };
+ };
};
pci: pci-controller {
--
2.2.0.rc0.207.ga3a616c
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