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Diffstat (limited to 'drivers/of/selftest.c')
-rw-r--r--drivers/of/selftest.c80
1 files changed, 70 insertions, 10 deletions
diff --git a/drivers/of/selftest.c b/drivers/of/selftest.c
index fe70b86bcffb..077314eebb95 100644
--- a/drivers/of/selftest.c
+++ b/drivers/of/selftest.c
@@ -31,6 +31,51 @@ static struct selftest_results {
} \
}
+static void __init of_selftest_find_node_by_name(void)
+{
+ struct device_node *np;
+
+ np = of_find_node_by_path("/testcase-data");
+ selftest(np && !strcmp("/testcase-data", np->full_name),
+ "find /testcase-data failed\n");
+ of_node_put(np);
+
+ /* Test if trailing '/' works */
+ np = of_find_node_by_path("/testcase-data/");
+ selftest(!np, "trailing '/' on /testcase-data/ should fail\n");
+
+ np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
+ selftest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name),
+ "find /testcase-data/phandle-tests/consumer-a failed\n");
+ of_node_put(np);
+
+ np = of_find_node_by_path("testcase-alias");
+ selftest(np && !strcmp("/testcase-data", np->full_name),
+ "find testcase-alias failed\n");
+ of_node_put(np);
+
+ /* Test if trailing '/' works on aliases */
+ np = of_find_node_by_path("testcase-alias/");
+ selftest(!np, "trailing '/' on testcase-alias/ should fail\n");
+
+ np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");
+ selftest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name),
+ "find testcase-alias/phandle-tests/consumer-a failed\n");
+ of_node_put(np);
+
+ np = of_find_node_by_path("/testcase-data/missing-path");
+ selftest(!np, "non-existent path returned node %s\n", np->full_name);
+ of_node_put(np);
+
+ np = of_find_node_by_path("missing-alias");
+ selftest(!np, "non-existent alias returned node %s\n", np->full_name);
+ of_node_put(np);
+
+ np = of_find_node_by_path("testcase-alias/missing-path");
+ selftest(!np, "non-existent alias with relative path returned node %s\n", np->full_name);
+ of_node_put(np);
+}
+
static void __init of_selftest_dynamic(void)
{
struct device_node *np;
@@ -431,8 +476,12 @@ static void __init of_selftest_match_node(void)
static void __init of_selftest_platform_populate(void)
{
int irq;
- struct device_node *np;
+ struct device_node *np, *child;
struct platform_device *pdev;
+ struct of_device_id match[] = {
+ { .compatible = "test-device", },
+ {}
+ };
np = of_find_node_by_path("/testcase-data");
of_platform_populate(np, of_default_bus_match_table, NULL, NULL);
@@ -440,22 +489,32 @@ static void __init of_selftest_platform_populate(void)
/* Test that a missing irq domain returns -EPROBE_DEFER */
np = of_find_node_by_path("/testcase-data/testcase-device1");
pdev = of_find_device_by_node(np);
- if (!pdev)
- selftest(0, "device 1 creation failed\n");
+ selftest(pdev, "device 1 creation failed\n");
+
irq = platform_get_irq(pdev, 0);
- if (irq != -EPROBE_DEFER)
- selftest(0, "device deferred probe failed - %d\n", irq);
+ selftest(irq == -EPROBE_DEFER, "device deferred probe failed - %d\n", irq);
/* Test that a parsing failure does not return -EPROBE_DEFER */
np = of_find_node_by_path("/testcase-data/testcase-device2");
pdev = of_find_device_by_node(np);
- if (!pdev)
- selftest(0, "device 2 creation failed\n");
+ selftest(pdev, "device 2 creation failed\n");
irq = platform_get_irq(pdev, 0);
- if (irq >= 0 || irq == -EPROBE_DEFER)
- selftest(0, "device parsing error failed - %d\n", irq);
+ selftest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq);
- selftest(1, "passed");
+ np = of_find_node_by_path("/testcase-data/platform-tests");
+ if (!np) {
+ pr_err("No testcase data in device tree\n");
+ return;
+ }
+
+ for_each_child_of_node(np, child) {
+ struct device_node *grandchild;
+ of_platform_populate(child, match, NULL, NULL);
+ for_each_child_of_node(child, grandchild)
+ selftest(of_find_device_by_node(grandchild),
+ "Could not create device for node '%s'\n",
+ grandchild->name);
+ }
}
static int __init of_selftest(void)
@@ -470,6 +529,7 @@ static int __init of_selftest(void)
of_node_put(np);
pr_info("start of selftest - you will see error messages\n");
+ of_selftest_find_node_by_name();
of_selftest_dynamic();
of_selftest_parse_phandle_with_args();
of_selftest_property_match_string();