dm: rtc: Add tests for real-time clocks

Add some simple tests to verify that the RTC uclass works correctly in
U-Boot.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/test/dm/Makefile b/test/dm/Makefile
index fd9e29f201c468b58da41648219f2b31287739ac..a0cc2c6de5f903a0a7a8e03862e174ab863f5157 100644 (file)
--- 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 (file)
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@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 dd6d0acc27d7a4bfdcac5aa5b5dbfa3c7f840884..008584865c0592705f8c318fdece12ce6adf1280 100644 (file)
--- a/test/dm/test.dts
+++ b/test/dm/test.dts
@@ -20,6 +20,8 @@
                testfdt5 = "/some-bus/c-test@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@43 {
+                       reg = <0x43>;
+                       compatible = "sandbox-rtc";
+                       emul {
+                               compatible = "sandbox,i2c-rtc";
+                       };
+               };
+
+               rtc_1: rtc@61 {
+                       reg = <0x61>;
+                       compatible = "sandbox-rtc";
+                       emul {
+                               compatible = "sandbox,i2c-rtc";
+                       };
+               };
        };
 
        pci: pci-controller {