dm: Add basic tests
Add some tests of driver model functionality. Coverage includes:
- basic init
- binding of drivers to devices using platform_data
- automatic probing of devices when referenced
- availability of platform data to devices
- lifecycle from bind to probe to remove to unbind
- renumbering within a uclass when devices are probed/removed
- calling driver-defined operations
- deactivation of drivers when removed
- memory leak across creation and destruction of drivers/uclasses
- uclass init/destroy methods
- automatic probe/remove of children/parents when needed
This function is enabled for sandbox, using CONFIG_DM_TEST.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/dm/test-main.c b/test/dm/test-main.c
new file mode 100644
index 0000000..828ed46
--- /dev/null
+++ b/test/dm/test-main.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2013 Google, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <dm/test.h>
+#include <dm/root.h>
+#include <dm/uclass-internal.h>
+#include <dm/ut.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct dm_test_state global_test_state;
+
+/* Get ready for testing */
+static int dm_test_init(struct dm_test_state *dms)
+{
+ memset(dms, '\0', sizeof(*dms));
+ gd->dm_root = NULL;
+ memset(dm_testdrv_op_count, '\0', sizeof(dm_testdrv_op_count));
+
+ ut_assertok(dm_init());
+ dms->root = dm_root();
+
+ return 0;
+}
+
+/* Ensure all the test devices are probed */
+static int do_autoprobe(struct dm_test_state *dms)
+{
+ struct device *dev;
+ int ret;
+
+ /* Scanning the uclass is enough to probe all the devices */
+ for (ret = uclass_first_device(UCLASS_TEST, &dev);
+ dev;
+ ret = uclass_next_device(&dev))
+ ;
+
+ return ret;
+}
+
+static int dm_test_destroy(struct dm_test_state *dms)
+{
+ int id;
+
+ for (id = 0; id < UCLASS_COUNT; id++) {
+ struct uclass *uc;
+
+ /*
+ * If the uclass doesn't exist we don't want to create it. So
+ * check that here before we call uclass_find_device()/
+ */
+ uc = uclass_find(id);
+ if (!uc)
+ continue;
+ ut_assertok(uclass_destroy(uc));
+ }
+
+ return 0;
+}
+
+int dm_test_main(void)
+{
+ struct dm_test *tests = ll_entry_start(struct dm_test, dm_test);
+ const int n_ents = ll_entry_count(struct dm_test, dm_test);
+ struct dm_test_state *dms = &global_test_state;
+ struct dm_test *test;
+
+ /*
+ * If we have no device tree, or it only has a root node, then these
+ * tests clearly aren't going to work...
+ */
+ if (!gd->fdt_blob || fdt_next_node(gd->fdt_blob, 0, NULL) < 0) {
+ puts("Please run with test device tree:\n"
+ " dtc -I dts -O dtb test/dm/test.dts -o test/dm/test.dtb\n"
+ " ./u-boot -d test/dm/test.dtb\n");
+ ut_assert(gd->fdt_blob);
+ }
+
+ printf("Running %d driver model tests\n", n_ents);
+
+ for (test = tests; test < tests + n_ents; test++) {
+ printf("Test: %s\n", test->name);
+ ut_assertok(dm_test_init(dms));
+
+ if (test->flags & DM_TESTF_SCAN_PDATA)
+ ut_assertok(dm_scan_platdata());
+ if (test->flags & DM_TESTF_PROBE_TEST)
+ ut_assertok(do_autoprobe(dms));
+ if (test->flags & DM_TESTF_SCAN_FDT)
+ ut_assertok(dm_scan_fdt(gd->fdt_blob));
+
+ if (test->func(dms))
+ break;
+
+ ut_assertok(dm_test_destroy(dms));
+ }
+
+ printf("Failures: %d\n", dms->fail_count);
+
+ return 0;
+}