dm: Simple Watchdog uclass
This is a simple uclass for Watchdog Timers. It has four operations:
start, restart, reset, stop. Drivers must implement start, restart and
stop operations, while implementing reset is optional: It's default
implementation expires watchdog timer in one clock tick.
Signed-off-by: Maxim Sloyko <maxims@google.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/test/dm/wdt.c b/test/dm/wdt.c
new file mode 100644
index 0000000..2ecfcea
--- /dev/null
+++ b/test/dm/wdt.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2017 Google, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <wdt.h>
+#include <asm/state.h>
+#include <asm/test.h>
+#include <dm/test.h>
+#include <test/ut.h>
+
+/* Test that watchdog driver functions are called */
+static int dm_test_wdt_base(struct unit_test_state *uts)
+{
+ struct sandbox_state *state = state_get_current();
+ struct udevice *dev;
+ const u64 timeout = 42;
+
+ ut_assertok(uclass_get_device(UCLASS_WDT, 0, &dev));
+ ut_asserteq(0, state->wdt.counter);
+ ut_asserteq(false, state->wdt.running);
+
+ ut_assertok(wdt_start(dev, timeout, 0));
+ ut_asserteq(timeout, state->wdt.counter);
+ ut_asserteq(true, state->wdt.running);
+
+ uint reset_count = state->wdt.reset_count;
+ ut_assertok(wdt_reset(dev));
+ ut_asserteq(reset_count + 1, state->wdt.reset_count);
+ ut_asserteq(true, state->wdt.running);
+
+ ut_assertok(wdt_stop(dev));
+ ut_asserteq(false, state->wdt.running);
+
+ return 0;
+}
+DM_TEST(dm_test_wdt_base, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);