* [Patch 2/3] dt: OF_UNITTEST make dependency broken, move unittest.c
@ 2015-03-12 5:35 ` Frank Rowand
0 siblings, 0 replies; 5+ messages in thread
From: Frank Rowand @ 2015-03-12 5:35 UTC (permalink / raw)
To: frowand.list, Grant Likely, Rob Herring, Michal Marek,
Linux Kernel list, devicetree@vger.kernel.org, linux-kbuild
From: Frank Rowand <frank.rowand@sonymobile.com>
Move of_unittest.c into unittest-data/
This is based on v4.0-rc3.
All checkpatch errors are ignored, as this is just a file move. At least
two of the checkpatch errors appear to be real bugs, to be addressed in
a future patch.
Signed-off-by: Frank Rowand <frank.rowand@sonymobile.com>
---
drivers/of/unittest-data/unittest.c | 1879 ++++++++++++++++++++++++++++++++++++
drivers/of/unittest.c | 1879 ------------------------------------
2 files changed, 1879 insertions(+), 1879 deletions(-)
Index: b/drivers/of/unittest-data/unittest.c
===================================================================
--- /dev/null
+++ b/drivers/of/unittest-data/unittest.c
@@ -0,0 +1,1879 @@
+/*
+ * Self tests for device tree subsystem
+ */
+
+#define pr_fmt(fmt) "### dt-test ### " fmt
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/hashtable.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_fdt.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/of_platform.h>
+
+#include <linux/i2c.h>
+#include <linux/i2c-mux.h>
+
+#include "of_private.h"
+
+static struct selftest_results {
+ int passed;
+ int failed;
+} selftest_results;
+
+#define selftest(result, fmt, ...) ({ \
+ bool failed = !(result); \
+ if (failed) { \
+ selftest_results.failed++; \
+ pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
+ } else { \
+ selftest_results.passed++; \
+ pr_debug("pass %s():%i\n", __func__, __LINE__); \
+ } \
+ failed; \
+})
+
+static void __init of_selftest_find_node_by_name(void)
+{
+ struct device_node *np;
+ const char *options;
+
+ 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);
+
+ np = of_find_node_opts_by_path("/testcase-data:testoption", &options);
+ selftest(np && !strcmp("testoption", options),
+ "option path test failed\n");
+ of_node_put(np);
+
+ np = of_find_node_opts_by_path("/testcase-data:testoption", NULL);
+ selftest(np, "NULL option path test failed\n");
+ of_node_put(np);
+
+ np = of_find_node_opts_by_path("testcase-alias:testaliasoption",
+ &options);
+ selftest(np && !strcmp("testaliasoption", options),
+ "option alias path test failed\n");
+ of_node_put(np);
+
+ np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL);
+ selftest(np, "NULL option alias path test failed\n");
+ of_node_put(np);
+
+ options = "testoption";
+ np = of_find_node_opts_by_path("testcase-alias", &options);
+ selftest(np && !options, "option clearing test failed\n");
+ of_node_put(np);
+
+ options = "testoption";
+ np = of_find_node_opts_by_path("/", &options);
+ selftest(np && !options, "option clearing root node test failed\n");
+ of_node_put(np);
+}
+
+static void __init of_selftest_dynamic(void)
+{
+ struct device_node *np;
+ struct property *prop;
+
+ np = of_find_node_by_path("/testcase-data");
+ if (!np) {
+ pr_err("missing testcase data\n");
+ return;
+ }
+
+ /* Array of 4 properties for the purpose of testing */
+ prop = kzalloc(sizeof(*prop) * 4, GFP_KERNEL);
+ if (!prop) {
+ selftest(0, "kzalloc() failed\n");
+ return;
+ }
+
+ /* Add a new property - should pass*/
+ prop->name = "new-property";
+ prop->value = "new-property-data";
+ prop->length = strlen(prop->value);
+ selftest(of_add_property(np, prop) == 0, "Adding a new property failed\n");
+
+ /* Try to add an existing property - should fail */
+ prop++;
+ prop->name = "new-property";
+ prop->value = "new-property-data-should-fail";
+ prop->length = strlen(prop->value);
+ selftest(of_add_property(np, prop) != 0,
+ "Adding an existing property should have failed\n");
+
+ /* Try to modify an existing property - should pass */
+ prop->value = "modify-property-data-should-pass";
+ prop->length = strlen(prop->value);
+ selftest(of_update_property(np, prop) == 0,
+ "Updating an existing property should have passed\n");
+
+ /* Try to modify non-existent property - should pass*/
+ prop++;
+ prop->name = "modify-property";
+ prop->value = "modify-missing-property-data-should-pass";
+ prop->length = strlen(prop->value);
+ selftest(of_update_property(np, prop) == 0,
+ "Updating a missing property should have passed\n");
+
+ /* Remove property - should pass */
+ selftest(of_remove_property(np, prop) == 0,
+ "Removing a property should have passed\n");
+
+ /* Adding very large property - should pass */
+ prop++;
+ prop->name = "large-property-PAGE_SIZEx8";
+ prop->length = PAGE_SIZE * 8;
+ prop->value = kzalloc(prop->length, GFP_KERNEL);
+ selftest(prop->value != NULL, "Unable to allocate large buffer\n");
+ if (prop->value)
+ selftest(of_add_property(np, prop) == 0,
+ "Adding a large property should have passed\n");
+}
+
+static int __init of_selftest_check_node_linkage(struct device_node *np)
+{
+ struct device_node *child;
+ int count = 0, rc;
+
+ for_each_child_of_node(np, child) {
+ if (child->parent != np) {
+ pr_err("Child node %s links to wrong parent %s\n",
+ child->name, np->name);
+ return -EINVAL;
+ }
+
+ rc = of_selftest_check_node_linkage(child);
+ if (rc < 0)
+ return rc;
+ count += rc;
+ }
+
+ return count + 1;
+}
+
+static void __init of_selftest_check_tree_linkage(void)
+{
+ struct device_node *np;
+ int allnode_count = 0, child_count;
+
+ if (!of_root)
+ return;
+
+ for_each_of_allnodes(np)
+ allnode_count++;
+ child_count = of_selftest_check_node_linkage(of_root);
+
+ selftest(child_count > 0, "Device node data structure is corrupted\n");
+ selftest(child_count == allnode_count, "allnodes list size (%i) doesn't match"
+ "sibling lists size (%i)\n", allnode_count, child_count);
+ pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count);
+}
+
+struct node_hash {
+ struct hlist_node node;
+ struct device_node *np;
+};
+
+static DEFINE_HASHTABLE(phandle_ht, 8);
+static void __init of_selftest_check_phandles(void)
+{
+ struct device_node *np;
+ struct node_hash *nh;
+ struct hlist_node *tmp;
+ int i, dup_count = 0, phandle_count = 0;
+
+ for_each_of_allnodes(np) {
+ if (!np->phandle)
+ continue;
+
+ hash_for_each_possible(phandle_ht, nh, node, np->phandle) {
+ if (nh->np->phandle == np->phandle) {
+ pr_info("Duplicate phandle! %i used by %s and %s\n",
+ np->phandle, nh->np->full_name, np->full_name);
+ dup_count++;
+ break;
+ }
+ }
+
+ nh = kzalloc(sizeof(*nh), GFP_KERNEL);
+ if (WARN_ON(!nh))
+ return;
+
+ nh->np = np;
+ hash_add(phandle_ht, &nh->node, np->phandle);
+ phandle_count++;
+ }
+ selftest(dup_count == 0, "Found %i duplicates in %i phandles\n",
+ dup_count, phandle_count);
+
+ /* Clean up */
+ hash_for_each_safe(phandle_ht, i, tmp, nh, node) {
+ hash_del(&nh->node);
+ kfree(nh);
+ }
+}
+
+static void __init of_selftest_parse_phandle_with_args(void)
+{
+ struct device_node *np;
+ struct of_phandle_args args;
+ int i, rc;
+
+ np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
+ if (!np) {
+ pr_err("missing testcase data\n");
+ return;
+ }
+
+ rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
+ selftest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
+
+ for (i = 0; i < 8; i++) {
+ bool passed = true;
+ rc = of_parse_phandle_with_args(np, "phandle-list",
+ "#phandle-cells", i, &args);
+
+ /* Test the values from tests-phandle.dtsi */
+ switch (i) {
+ case 0:
+ passed &= !rc;
+ passed &= (args.args_count == 1);
+ passed &= (args.args[0] == (i + 1));
+ break;
+ case 1:
+ passed &= !rc;
+ passed &= (args.args_count == 2);
+ passed &= (args.args[0] == (i + 1));
+ passed &= (args.args[1] == 0);
+ break;
+ case 2:
+ passed &= (rc == -ENOENT);
+ break;
+ case 3:
+ passed &= !rc;
+ passed &= (args.args_count == 3);
+ passed &= (args.args[0] == (i + 1));
+ passed &= (args.args[1] == 4);
+ passed &= (args.args[2] == 3);
+ break;
+ case 4:
+ passed &= !rc;
+ passed &= (args.args_count == 2);
+ passed &= (args.args[0] == (i + 1));
+ passed &= (args.args[1] == 100);
+ break;
+ case 5:
+ passed &= !rc;
+ passed &= (args.args_count == 0);
+ break;
+ case 6:
+ passed &= !rc;
+ passed &= (args.args_count == 1);
+ passed &= (args.args[0] == (i + 1));
+ break;
+ case 7:
+ passed &= (rc == -ENOENT);
+ break;
+ default:
+ passed = false;
+ }
+
+ selftest(passed, "index %i - data error on node %s rc=%i\n",
+ i, args.np->full_name, rc);
+ }
+
+ /* Check for missing list property */
+ rc = of_parse_phandle_with_args(np, "phandle-list-missing",
+ "#phandle-cells", 0, &args);
+ selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
+ rc = of_count_phandle_with_args(np, "phandle-list-missing",
+ "#phandle-cells");
+ selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
+
+ /* Check for missing cells property */
+ rc = of_parse_phandle_with_args(np, "phandle-list",
+ "#phandle-cells-missing", 0, &args);
+ selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
+ rc = of_count_phandle_with_args(np, "phandle-list",
+ "#phandle-cells-missing");
+ selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
+
+ /* Check for bad phandle in list */
+ rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
+ "#phandle-cells", 0, &args);
+ selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
+ rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
+ "#phandle-cells");
+ selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
+
+ /* Check for incorrectly formed argument list */
+ rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
+ "#phandle-cells", 1, &args);
+ selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
+ rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
+ "#phandle-cells");
+ selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
+}
+
+static void __init of_selftest_property_string(void)
+{
+ const char *strings[4];
+ struct device_node *np;
+ int rc;
+
+ np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
+ if (!np) {
+ pr_err("No testcase data in device tree\n");
+ return;
+ }
+
+ rc = of_property_match_string(np, "phandle-list-names", "first");
+ selftest(rc == 0, "first expected:0 got:%i\n", rc);
+ rc = of_property_match_string(np, "phandle-list-names", "second");
+ selftest(rc == 1, "second expected:0 got:%i\n", rc);
+ rc = of_property_match_string(np, "phandle-list-names", "third");
+ selftest(rc == 2, "third expected:0 got:%i\n", rc);
+ rc = of_property_match_string(np, "phandle-list-names", "fourth");
+ selftest(rc == -ENODATA, "unmatched string; rc=%i\n", rc);
+ rc = of_property_match_string(np, "missing-property", "blah");
+ selftest(rc == -EINVAL, "missing property; rc=%i\n", rc);
+ rc = of_property_match_string(np, "empty-property", "blah");
+ selftest(rc == -ENODATA, "empty property; rc=%i\n", rc);
+ rc = of_property_match_string(np, "unterminated-string", "blah");
+ selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
+
+ /* of_property_count_strings() tests */
+ rc = of_property_count_strings(np, "string-property");
+ selftest(rc == 1, "Incorrect string count; rc=%i\n", rc);
+ rc = of_property_count_strings(np, "phandle-list-names");
+ selftest(rc == 3, "Incorrect string count; rc=%i\n", rc);
+ rc = of_property_count_strings(np, "unterminated-string");
+ selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
+ rc = of_property_count_strings(np, "unterminated-string-list");
+ selftest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
+
+ /* of_property_read_string_index() tests */
+ rc = of_property_read_string_index(np, "string-property", 0, strings);
+ selftest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc);
+ strings[0] = NULL;
+ rc = of_property_read_string_index(np, "string-property", 1, strings);
+ selftest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
+ rc = of_property_read_string_index(np, "phandle-list-names", 0, strings);
+ selftest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
+ rc = of_property_read_string_index(np, "phandle-list-names", 1, strings);
+ selftest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc);
+ rc = of_property_read_string_index(np, "phandle-list-names", 2, strings);
+ selftest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc);
+ strings[0] = NULL;
+ rc = of_property_read_string_index(np, "phandle-list-names", 3, strings);
+ selftest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
+ strings[0] = NULL;
+ rc = of_property_read_string_index(np, "unterminated-string", 0, strings);
+ selftest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
+ rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings);
+ selftest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
+ strings[0] = NULL;
+ rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */
+ selftest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
+ strings[1] = NULL;
+
+ /* of_property_read_string_array() tests */
+ rc = of_property_read_string_array(np, "string-property", strings, 4);
+ selftest(rc == 1, "Incorrect string count; rc=%i\n", rc);
+ rc = of_property_read_string_array(np, "phandle-list-names", strings, 4);
+ selftest(rc == 3, "Incorrect string count; rc=%i\n", rc);
+ rc = of_property_read_string_array(np, "unterminated-string", strings, 4);
+ selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
+ /* -- An incorrectly formed string should cause a failure */
+ rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4);
+ selftest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
+ /* -- parsing the correctly formed strings should still work: */
+ strings[2] = NULL;
+ rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2);
+ selftest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc);
+ strings[1] = NULL;
+ rc = of_property_read_string_array(np, "phandle-list-names", strings, 1);
+ selftest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]);
+}
+
+#define propcmp(p1, p2) (((p1)->length == (p2)->length) && \
+ (p1)->value && (p2)->value && \
+ !memcmp((p1)->value, (p2)->value, (p1)->length) && \
+ !strcmp((p1)->name, (p2)->name))
+static void __init of_selftest_property_copy(void)
+{
+#ifdef CONFIG_OF_DYNAMIC
+ struct property p1 = { .name = "p1", .length = 0, .value = "" };
+ struct property p2 = { .name = "p2", .length = 5, .value = "abcd" };
+ struct property *new;
+
+ new = __of_prop_dup(&p1, GFP_KERNEL);
+ selftest(new && propcmp(&p1, new), "empty property didn't copy correctly\n");
+ kfree(new->value);
+ kfree(new->name);
+ kfree(new);
+
+ new = __of_prop_dup(&p2, GFP_KERNEL);
+ selftest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n");
+ kfree(new->value);
+ kfree(new->name);
+ kfree(new);
+#endif
+}
+
+static void __init of_selftest_changeset(void)
+{
+#ifdef CONFIG_OF_DYNAMIC
+ struct property *ppadd, padd = { .name = "prop-add", .length = 0, .value = "" };
+ struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" };
+ struct property *ppremove;
+ struct device_node *n1, *n2, *n21, *nremove, *parent, *np;
+ struct of_changeset chgset;
+
+ of_changeset_init(&chgset);
+ n1 = __of_node_dup(NULL, "/testcase-data/changeset/n1");
+ selftest(n1, "testcase setup failure\n");
+ n2 = __of_node_dup(NULL, "/testcase-data/changeset/n2");
+ selftest(n2, "testcase setup failure\n");
+ n21 = __of_node_dup(NULL, "%s/%s", "/testcase-data/changeset/n2", "n21");
+ selftest(n21, "testcase setup failure %p\n", n21);
+ nremove = of_find_node_by_path("/testcase-data/changeset/node-remove");
+ selftest(nremove, "testcase setup failure\n");
+ ppadd = __of_prop_dup(&padd, GFP_KERNEL);
+ selftest(ppadd, "testcase setup failure\n");
+ ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
+ selftest(ppupdate, "testcase setup failure\n");
+ parent = nremove->parent;
+ n1->parent = parent;
+ n2->parent = parent;
+ n21->parent = n2;
+ n2->child = n21;
+ ppremove = of_find_property(parent, "prop-remove", NULL);
+ selftest(ppremove, "failed to find removal prop");
+
+ of_changeset_init(&chgset);
+ selftest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n");
+ selftest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n");
+ selftest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n");
+ selftest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n");
+ selftest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop\n");
+ selftest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n");
+ selftest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n");
+ mutex_lock(&of_mutex);
+ selftest(!of_changeset_apply(&chgset), "apply failed\n");
+ mutex_unlock(&of_mutex);
+
+ /* Make sure node names are constructed correctly */
+ selftest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")),
+ "'%s' not added\n", n21->full_name);
+ of_node_put(np);
+
+ mutex_lock(&of_mutex);
+ selftest(!of_changeset_revert(&chgset), "revert failed\n");
+ mutex_unlock(&of_mutex);
+
+ of_changeset_destroy(&chgset);
+#endif
+}
+
+static void __init of_selftest_parse_interrupts(void)
+{
+ struct device_node *np;
+ struct of_phandle_args args;
+ int i, rc;
+
+ np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
+ if (!np) {
+ pr_err("missing testcase data\n");
+ return;
+ }
+
+ for (i = 0; i < 4; i++) {
+ bool passed = true;
+ args.args_count = 0;
+ rc = of_irq_parse_one(np, i, &args);
+
+ passed &= !rc;
+ passed &= (args.args_count == 1);
+ passed &= (args.args[0] == (i + 1));
+
+ selftest(passed, "index %i - data error on node %s rc=%i\n",
+ i, args.np->full_name, rc);
+ }
+ of_node_put(np);
+
+ np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
+ if (!np) {
+ pr_err("missing testcase data\n");
+ return;
+ }
+
+ for (i = 0; i < 4; i++) {
+ bool passed = true;
+ args.args_count = 0;
+ rc = of_irq_parse_one(np, i, &args);
+
+ /* Test the values from tests-phandle.dtsi */
+ switch (i) {
+ case 0:
+ passed &= !rc;
+ passed &= (args.args_count == 1);
+ passed &= (args.args[0] == 9);
+ break;
+ case 1:
+ passed &= !rc;
+ passed &= (args.args_count == 3);
+ passed &= (args.args[0] == 10);
+ passed &= (args.args[1] == 11);
+ passed &= (args.args[2] == 12);
+ break;
+ case 2:
+ passed &= !rc;
+ passed &= (args.args_count == 2);
+ passed &= (args.args[0] == 13);
+ passed &= (args.args[1] == 14);
+ break;
+ case 3:
+ passed &= !rc;
+ passed &= (args.args_count == 2);
+ passed &= (args.args[0] == 15);
+ passed &= (args.args[1] == 16);
+ break;
+ default:
+ passed = false;
+ }
+ selftest(passed, "index %i - data error on node %s rc=%i\n",
+ i, args.np->full_name, rc);
+ }
+ of_node_put(np);
+}
+
+static void __init of_selftest_parse_interrupts_extended(void)
+{
+ struct device_node *np;
+ struct of_phandle_args args;
+ int i, rc;
+
+ np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
+ if (!np) {
+ pr_err("missing testcase data\n");
+ return;
+ }
+
+ for (i = 0; i < 7; i++) {
+ bool passed = true;
+ rc = of_irq_parse_one(np, i, &args);
+
+ /* Test the values from tests-phandle.dtsi */
+ switch (i) {
+ case 0:
+ passed &= !rc;
+ passed &= (args.args_count == 1);
+ passed &= (args.args[0] == 1);
+ break;
+ case 1:
+ passed &= !rc;
+ passed &= (args.args_count == 3);
+ passed &= (args.args[0] == 2);
+ passed &= (args.args[1] == 3);
+ passed &= (args.args[2] == 4);
+ break;
+ case 2:
+ passed &= !rc;
+ passed &= (args.args_count == 2);
+ passed &= (args.args[0] == 5);
+ passed &= (args.args[1] == 6);
+ break;
+ case 3:
+ passed &= !rc;
+ passed &= (args.args_count == 1);
+ passed &= (args.args[0] == 9);
+ break;
+ case 4:
+ passed &= !rc;
+ passed &= (args.args_count == 3);
+ passed &= (args.args[0] == 10);
+ passed &= (args.args[1] == 11);
+ passed &= (args.args[2] == 12);
+ break;
+ case 5:
+ passed &= !rc;
+ passed &= (args.args_count == 2);
+ passed &= (args.args[0] == 13);
+ passed &= (args.args[1] == 14);
+ break;
+ case 6:
+ passed &= !rc;
+ passed &= (args.args_count == 1);
+ passed &= (args.args[0] == 15);
+ break;
+ default:
+ passed = false;
+ }
+
+ selftest(passed, "index %i - data error on node %s rc=%i\n",
+ i, args.np->full_name, rc);
+ }
+ of_node_put(np);
+}
+
+static struct of_device_id match_node_table[] = {
+ { .data = "A", .name = "name0", }, /* Name alone is lowest priority */
+ { .data = "B", .type = "type1", }, /* followed by type alone */
+
+ { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
+ { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
+ { .data = "Cc", .name = "name2", .type = "type2", },
+
+ { .data = "E", .compatible = "compat3" },
+ { .data = "G", .compatible = "compat2", },
+ { .data = "H", .compatible = "compat2", .name = "name5", },
+ { .data = "I", .compatible = "compat2", .type = "type1", },
+ { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
+ { .data = "K", .compatible = "compat2", .name = "name9", },
+ {}
+};
+
+static struct {
+ const char *path;
+ const char *data;
+} match_node_tests[] = {
+ { .path = "/testcase-data/match-node/name0", .data = "A", },
+ { .path = "/testcase-data/match-node/name1", .data = "B", },
+ { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
+ { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
+ { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
+ { .path = "/testcase-data/match-node/name3", .data = "E", },
+ { .path = "/testcase-data/match-node/name4", .data = "G", },
+ { .path = "/testcase-data/match-node/name5", .data = "H", },
+ { .path = "/testcase-data/match-node/name6", .data = "G", },
+ { .path = "/testcase-data/match-node/name7", .data = "I", },
+ { .path = "/testcase-data/match-node/name8", .data = "J", },
+ { .path = "/testcase-data/match-node/name9", .data = "K", },
+};
+
+static void __init of_selftest_match_node(void)
+{
+ struct device_node *np;
+ const struct of_device_id *match;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
+ np = of_find_node_by_path(match_node_tests[i].path);
+ if (!np) {
+ selftest(0, "missing testcase node %s\n",
+ match_node_tests[i].path);
+ continue;
+ }
+
+ match = of_match_node(match_node_table, np);
+ if (!match) {
+ selftest(0, "%s didn't match anything\n",
+ match_node_tests[i].path);
+ continue;
+ }
+
+ if (strcmp(match->data, match_node_tests[i].data) != 0) {
+ selftest(0, "%s got wrong match. expected %s, got %s\n",
+ match_node_tests[i].path, match_node_tests[i].data,
+ (const char *)match->data);
+ continue;
+ }
+ selftest(1, "passed");
+ }
+}
+
+struct device test_bus = {
+ .init_name = "unittest-bus",
+};
+static void __init of_selftest_platform_populate(void)
+{
+ int irq, rc;
+ struct device_node *np, *child, *grandchild;
+ 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);
+
+ /* 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);
+ selftest(pdev, "device 1 creation failed\n");
+
+ irq = platform_get_irq(pdev, 0);
+ 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);
+ selftest(pdev, "device 2 creation failed\n");
+ irq = platform_get_irq(pdev, 0);
+ selftest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq);
+
+ if (selftest(np = of_find_node_by_path("/testcase-data/platform-tests"),
+ "No testcase data in device tree\n"));
+ return;
+
+ if (selftest(!(rc = device_register(&test_bus)),
+ "testbus registration failed; rc=%i\n", rc));
+ return;
+
+ for_each_child_of_node(np, child) {
+ of_platform_populate(child, match, NULL, &test_bus);
+ for_each_child_of_node(child, grandchild)
+ selftest(of_find_device_by_node(grandchild),
+ "Could not create device for node '%s'\n",
+ grandchild->name);
+ }
+
+ of_platform_depopulate(&test_bus);
+ for_each_child_of_node(np, child) {
+ for_each_child_of_node(child, grandchild)
+ selftest(!of_find_device_by_node(grandchild),
+ "device didn't get destroyed '%s'\n",
+ grandchild->name);
+ }
+
+ device_unregister(&test_bus);
+ of_node_put(np);
+}
+
+/**
+ * update_node_properties - adds the properties
+ * of np into dup node (present in live tree) and
+ * updates parent of children of np to dup.
+ *
+ * @np: node already present in live tree
+ * @dup: node present in live tree to be updated
+ */
+static void update_node_properties(struct device_node *np,
+ struct device_node *dup)
+{
+ struct property *prop;
+ struct device_node *child;
+
+ for_each_property_of_node(np, prop)
+ of_add_property(dup, prop);
+
+ for_each_child_of_node(np, child)
+ child->parent = dup;
+}
+
+/**
+ * attach_node_and_children - attaches nodes
+ * and its children to live tree
+ *
+ * @np: Node to attach to live tree
+ */
+static int attach_node_and_children(struct device_node *np)
+{
+ struct device_node *next, *dup, *child;
+ unsigned long flags;
+
+ dup = of_find_node_by_path(np->full_name);
+ if (dup) {
+ update_node_properties(np, dup);
+ return 0;
+ }
+
+ child = np->child;
+ np->child = NULL;
+
+ mutex_lock(&of_mutex);
+ raw_spin_lock_irqsave(&devtree_lock, flags);
+ np->sibling = np->parent->child;
+ np->parent->child = np;
+ of_node_clear_flag(np, OF_DETACHED);
+ raw_spin_unlock_irqrestore(&devtree_lock, flags);
+
+ __of_attach_node_sysfs(np);
+ mutex_unlock(&of_mutex);
+
+ while (child) {
+ next = child->sibling;
+ attach_node_and_children(child);
+ child = next;
+ }
+
+ return 0;
+}
+
+/**
+ * selftest_data_add - Reads, copies data from
+ * linked tree and attaches it to the live tree
+ */
+static int __init selftest_data_add(void)
+{
+ void *selftest_data;
+ struct device_node *selftest_data_node, *np;
+ extern uint8_t __dtb_testcases_begin[];
+ extern uint8_t __dtb_testcases_end[];
+ const int size = __dtb_testcases_end - __dtb_testcases_begin;
+ int rc;
+
+ if (!size) {
+ pr_warn("%s: No testcase data to attach; not running tests\n",
+ __func__);
+ return -ENODATA;
+ }
+
+ /* creating copy */
+ selftest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL);
+
+ if (!selftest_data) {
+ pr_warn("%s: Failed to allocate memory for selftest_data; "
+ "not running tests\n", __func__);
+ return -ENOMEM;
+ }
+ of_fdt_unflatten_tree(selftest_data, &selftest_data_node);
+ if (!selftest_data_node) {
+ pr_warn("%s: No tree to attach; not running tests\n", __func__);
+ return -ENODATA;
+ }
+ of_node_set_flag(selftest_data_node, OF_DETACHED);
+ rc = of_resolve_phandles(selftest_data_node);
+ if (rc) {
+ pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
+ return -EINVAL;
+ }
+
+ if (!of_root) {
+ of_root = selftest_data_node;
+ for_each_of_allnodes(np)
+ __of_attach_node_sysfs(np);
+ of_aliases = of_find_node_by_path("/aliases");
+ of_chosen = of_find_node_by_path("/chosen");
+ return 0;
+ }
+
+ /* attach the sub-tree to live tree */
+ np = selftest_data_node->child;
+ while (np) {
+ struct device_node *next = np->sibling;
+ np->parent = of_root;
+ attach_node_and_children(np);
+ np = next;
+ }
+ return 0;
+}
+
+#ifdef CONFIG_OF_OVERLAY
+
+static int selftest_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+
+ if (np == NULL) {
+ dev_err(dev, "No OF data for device\n");
+ return -EINVAL;
+
+ }
+
+ dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
+
+ of_platform_populate(np, NULL, NULL, &pdev->dev);
+
+ return 0;
+}
+
+static int selftest_remove(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+
+ dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
+ return 0;
+}
+
+static struct of_device_id selftest_match[] = {
+ { .compatible = "selftest", },
+ {},
+};
+
+static struct platform_driver selftest_driver = {
+ .probe = selftest_probe,
+ .remove = selftest_remove,
+ .driver = {
+ .name = "selftest",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(selftest_match),
+ },
+};
+
+/* get the platform device instantiated at the path */
+static struct platform_device *of_path_to_platform_device(const char *path)
+{
+ struct device_node *np;
+ struct platform_device *pdev;
+
+ np = of_find_node_by_path(path);
+ if (np == NULL)
+ return NULL;
+
+ pdev = of_find_device_by_node(np);
+ of_node_put(np);
+
+ return pdev;
+}
+
+/* find out if a platform device exists at that path */
+static int of_path_platform_device_exists(const char *path)
+{
+ struct platform_device *pdev;
+
+ pdev = of_path_to_platform_device(path);
+ platform_device_put(pdev);
+ return pdev != NULL;
+}
+
+#if IS_ENABLED(CONFIG_I2C)
+
+/* get the i2c client device instantiated at the path */
+static struct i2c_client *of_path_to_i2c_client(const char *path)
+{
+ struct device_node *np;
+ struct i2c_client *client;
+
+ np = of_find_node_by_path(path);
+ if (np == NULL)
+ return NULL;
+
+ client = of_find_i2c_device_by_node(np);
+ of_node_put(np);
+
+ return client;
+}
+
+/* find out if a i2c client device exists at that path */
+static int of_path_i2c_client_exists(const char *path)
+{
+ struct i2c_client *client;
+
+ client = of_path_to_i2c_client(path);
+ if (client)
+ put_device(&client->dev);
+ return client != NULL;
+}
+#else
+static int of_path_i2c_client_exists(const char *path)
+{
+ return 0;
+}
+#endif
+
+enum overlay_type {
+ PDEV_OVERLAY,
+ I2C_OVERLAY
+};
+
+static int of_path_device_type_exists(const char *path,
+ enum overlay_type ovtype)
+{
+ switch (ovtype) {
+ case PDEV_OVERLAY:
+ return of_path_platform_device_exists(path);
+ case I2C_OVERLAY:
+ return of_path_i2c_client_exists(path);
+ }
+ return 0;
+}
+
+static const char *selftest_path(int nr, enum overlay_type ovtype)
+{
+ const char *base;
+ static char buf[256];
+
+ switch (ovtype) {
+ case PDEV_OVERLAY:
+ base = "/testcase-data/overlay-node/test-bus";
+ break;
+ case I2C_OVERLAY:
+ base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
+ break;
+ default:
+ buf[0] = '\0';
+ return buf;
+ }
+ snprintf(buf, sizeof(buf) - 1, "%s/test-selftest%d", base, nr);
+ buf[sizeof(buf) - 1] = '\0';
+ return buf;
+}
+
+static int of_selftest_device_exists(int selftest_nr, enum overlay_type ovtype)
+{
+ const char *path;
+
+ path = selftest_path(selftest_nr, ovtype);
+
+ switch (ovtype) {
+ case PDEV_OVERLAY:
+ return of_path_platform_device_exists(path);
+ case I2C_OVERLAY:
+ return of_path_i2c_client_exists(path);
+ }
+ return 0;
+}
+
+static const char *overlay_path(int nr)
+{
+ static char buf[256];
+
+ snprintf(buf, sizeof(buf) - 1,
+ "/testcase-data/overlay%d", nr);
+ buf[sizeof(buf) - 1] = '\0';
+
+ return buf;
+}
+
+static const char *bus_path = "/testcase-data/overlay-node/test-bus";
+
+static int of_selftest_apply_overlay(int selftest_nr, int overlay_nr,
+ int *overlay_id)
+{
+ struct device_node *np = NULL;
+ int ret, id = -1;
+
+ np = of_find_node_by_path(overlay_path(overlay_nr));
+ if (np == NULL) {
+ selftest(0, "could not find overlay node @\"%s\"\n",
+ overlay_path(overlay_nr));
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = of_overlay_create(np);
+ if (ret < 0) {
+ selftest(0, "could not create overlay from \"%s\"\n",
+ overlay_path(overlay_nr));
+ goto out;
+ }
+ id = ret;
+
+ ret = 0;
+
+out:
+ of_node_put(np);
+
+ if (overlay_id)
+ *overlay_id = id;
+
+ return ret;
+}
+
+/* apply an overlay while checking before and after states */
+static int of_selftest_apply_overlay_check(int overlay_nr, int selftest_nr,
+ int before, int after, enum overlay_type ovtype)
+{
+ int ret;
+
+ /* selftest device must not be in before state */
+ if (of_selftest_device_exists(selftest_nr, ovtype) != before) {
+ selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
+ overlay_path(overlay_nr),
+ selftest_path(selftest_nr, ovtype),
+ !before ? "enabled" : "disabled");
+ return -EINVAL;
+ }
+
+ ret = of_selftest_apply_overlay(overlay_nr, selftest_nr, NULL);
+ if (ret != 0) {
+ /* of_selftest_apply_overlay already called selftest() */
+ return ret;
+ }
+
+ /* selftest device must be to set to after state */
+ if (of_selftest_device_exists(selftest_nr, ovtype) != after) {
+ selftest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
+ overlay_path(overlay_nr),
+ selftest_path(selftest_nr, ovtype),
+ !after ? "enabled" : "disabled");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* apply an overlay and then revert it while checking before, after states */
+static int of_selftest_apply_revert_overlay_check(int overlay_nr,
+ int selftest_nr, int before, int after,
+ enum overlay_type ovtype)
+{
+ int ret, ov_id;
+
+ /* selftest device must be in before state */
+ if (of_selftest_device_exists(selftest_nr, ovtype) != before) {
+ selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
+ overlay_path(overlay_nr),
+ selftest_path(selftest_nr, ovtype),
+ !before ? "enabled" : "disabled");
+ return -EINVAL;
+ }
+
+ /* apply the overlay */
+ ret = of_selftest_apply_overlay(overlay_nr, selftest_nr, &ov_id);
+ if (ret != 0) {
+ /* of_selftest_apply_overlay already called selftest() */
+ return ret;
+ }
+
+ /* selftest device must be in after state */
+ if (of_selftest_device_exists(selftest_nr, ovtype) != after) {
+ selftest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
+ overlay_path(overlay_nr),
+ selftest_path(selftest_nr, ovtype),
+ !after ? "enabled" : "disabled");
+ return -EINVAL;
+ }
+
+ ret = of_overlay_destroy(ov_id);
+ if (ret != 0) {
+ selftest(0, "overlay @\"%s\" failed to be destroyed @\"%s\"\n",
+ overlay_path(overlay_nr),
+ selftest_path(selftest_nr, ovtype));
+ return ret;
+ }
+
+ /* selftest device must be again in before state */
+ if (of_selftest_device_exists(selftest_nr, PDEV_OVERLAY) != before) {
+ selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
+ overlay_path(overlay_nr),
+ selftest_path(selftest_nr, ovtype),
+ !before ? "enabled" : "disabled");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* test activation of device */
+static void of_selftest_overlay_0(void)
+{
+ int ret;
+
+ /* device should enable */
+ ret = of_selftest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
+ if (ret != 0)
+ return;
+
+ selftest(1, "overlay test %d passed\n", 0);
+}
+
+/* test deactivation of device */
+static void of_selftest_overlay_1(void)
+{
+ int ret;
+
+ /* device should disable */
+ ret = of_selftest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
+ if (ret != 0)
+ return;
+
+ selftest(1, "overlay test %d passed\n", 1);
+}
+
+/* test activation of device */
+static void of_selftest_overlay_2(void)
+{
+ int ret;
+
+ /* device should enable */
+ ret = of_selftest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
+ if (ret != 0)
+ return;
+
+ selftest(1, "overlay test %d passed\n", 2);
+}
+
+/* test deactivation of device */
+static void of_selftest_overlay_3(void)
+{
+ int ret;
+
+ /* device should disable */
+ ret = of_selftest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
+ if (ret != 0)
+ return;
+
+ selftest(1, "overlay test %d passed\n", 3);
+}
+
+/* test activation of a full device node */
+static void of_selftest_overlay_4(void)
+{
+ int ret;
+
+ /* device should disable */
+ ret = of_selftest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY);
+ if (ret != 0)
+ return;
+
+ selftest(1, "overlay test %d passed\n", 4);
+}
+
+/* test overlay apply/revert sequence */
+static void of_selftest_overlay_5(void)
+{
+ int ret;
+
+ /* device should disable */
+ ret = of_selftest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
+ if (ret != 0)
+ return;
+
+ selftest(1, "overlay test %d passed\n", 5);
+}
+
+/* test overlay application in sequence */
+static void of_selftest_overlay_6(void)
+{
+ struct device_node *np;
+ int ret, i, ov_id[2];
+ int overlay_nr = 6, selftest_nr = 6;
+ int before = 0, after = 1;
+
+ /* selftest device must be in before state */
+ for (i = 0; i < 2; i++) {
+ if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
+ != before) {
+ selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
+ overlay_path(overlay_nr + i),
+ selftest_path(selftest_nr + i,
+ PDEV_OVERLAY),
+ !before ? "enabled" : "disabled");
+ return;
+ }
+ }
+
+ /* apply the overlays */
+ for (i = 0; i < 2; i++) {
+
+ np = of_find_node_by_path(overlay_path(overlay_nr + i));
+ if (np == NULL) {
+ selftest(0, "could not find overlay node @\"%s\"\n",
+ overlay_path(overlay_nr + i));
+ return;
+ }
+
+ ret = of_overlay_create(np);
+ if (ret < 0) {
+ selftest(0, "could not create overlay from \"%s\"\n",
+ overlay_path(overlay_nr + i));
+ return;
+ }
+ ov_id[i] = ret;
+ }
+
+ for (i = 0; i < 2; i++) {
+ /* selftest device must be in after state */
+ if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
+ != after) {
+ selftest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
+ overlay_path(overlay_nr + i),
+ selftest_path(selftest_nr + i,
+ PDEV_OVERLAY),
+ !after ? "enabled" : "disabled");
+ return;
+ }
+ }
+
+ for (i = 1; i >= 0; i--) {
+ ret = of_overlay_destroy(ov_id[i]);
+ if (ret != 0) {
+ selftest(0, "overlay @\"%s\" failed destroy @\"%s\"\n",
+ overlay_path(overlay_nr + i),
+ selftest_path(selftest_nr + i,
+ PDEV_OVERLAY));
+ return;
+ }
+ }
+
+ for (i = 0; i < 2; i++) {
+ /* selftest device must be again in before state */
+ if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
+ != before) {
+ selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
+ overlay_path(overlay_nr + i),
+ selftest_path(selftest_nr + i,
+ PDEV_OVERLAY),
+ !before ? "enabled" : "disabled");
+ return;
+ }
+ }
+
+ selftest(1, "overlay test %d passed\n", 6);
+}
+
+/* test overlay application in sequence */
+static void of_selftest_overlay_8(void)
+{
+ struct device_node *np;
+ int ret, i, ov_id[2];
+ int overlay_nr = 8, selftest_nr = 8;
+
+ /* we don't care about device state in this test */
+
+ /* apply the overlays */
+ for (i = 0; i < 2; i++) {
+
+ np = of_find_node_by_path(overlay_path(overlay_nr + i));
+ if (np == NULL) {
+ selftest(0, "could not find overlay node @\"%s\"\n",
+ overlay_path(overlay_nr + i));
+ return;
+ }
+
+ ret = of_overlay_create(np);
+ if (ret < 0) {
+ selftest(0, "could not create overlay from \"%s\"\n",
+ overlay_path(overlay_nr + i));
+ return;
+ }
+ ov_id[i] = ret;
+ }
+
+ /* now try to remove first overlay (it should fail) */
+ ret = of_overlay_destroy(ov_id[0]);
+ if (ret == 0) {
+ selftest(0, "overlay @\"%s\" was destroyed @\"%s\"\n",
+ overlay_path(overlay_nr + 0),
+ selftest_path(selftest_nr,
+ PDEV_OVERLAY));
+ return;
+ }
+
+ /* removing them in order should work */
+ for (i = 1; i >= 0; i--) {
+ ret = of_overlay_destroy(ov_id[i]);
+ if (ret != 0) {
+ selftest(0, "overlay @\"%s\" not destroyed @\"%s\"\n",
+ overlay_path(overlay_nr + i),
+ selftest_path(selftest_nr,
+ PDEV_OVERLAY));
+ return;
+ }
+ }
+
+ selftest(1, "overlay test %d passed\n", 8);
+}
+
+/* test insertion of a bus with parent devices */
+static void of_selftest_overlay_10(void)
+{
+ int ret;
+ char *child_path;
+
+ /* device should disable */
+ ret = of_selftest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
+ if (selftest(ret == 0,
+ "overlay test %d failed; overlay application\n", 10))
+ return;
+
+ child_path = kasprintf(GFP_KERNEL, "%s/test-selftest101",
+ selftest_path(10, PDEV_OVERLAY));
+ if (selftest(child_path, "overlay test %d failed; kasprintf\n", 10))
+ return;
+
+ ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
+ kfree(child_path);
+ if (selftest(ret, "overlay test %d failed; no child device\n", 10))
+ return;
+}
+
+/* test insertion of a bus with parent devices (and revert) */
+static void of_selftest_overlay_11(void)
+{
+ int ret;
+
+ /* device should disable */
+ ret = of_selftest_apply_revert_overlay_check(11, 11, 0, 1,
+ PDEV_OVERLAY);
+ if (selftest(ret == 0,
+ "overlay test %d failed; overlay application\n", 11))
+ return;
+}
+
+#if IS_ENABLED(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
+
+struct selftest_i2c_bus_data {
+ struct platform_device *pdev;
+ struct i2c_adapter adap;
+};
+
+static int selftest_i2c_master_xfer(struct i2c_adapter *adap,
+ struct i2c_msg *msgs, int num)
+{
+ struct selftest_i2c_bus_data *std = i2c_get_adapdata(adap);
+
+ (void)std;
+
+ return num;
+}
+
+static u32 selftest_i2c_functionality(struct i2c_adapter *adap)
+{
+ return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
+}
+
+static const struct i2c_algorithm selftest_i2c_algo = {
+ .master_xfer = selftest_i2c_master_xfer,
+ .functionality = selftest_i2c_functionality,
+};
+
+static int selftest_i2c_bus_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+ struct selftest_i2c_bus_data *std;
+ struct i2c_adapter *adap;
+ int ret;
+
+ if (np == NULL) {
+ dev_err(dev, "No OF data for device\n");
+ return -EINVAL;
+
+ }
+
+ dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
+
+ std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
+ if (!std) {
+ dev_err(dev, "Failed to allocate selftest i2c data\n");
+ return -ENOMEM;
+ }
+
+ /* link them together */
+ std->pdev = pdev;
+ platform_set_drvdata(pdev, std);
+
+ adap = &std->adap;
+ i2c_set_adapdata(adap, std);
+ adap->nr = -1;
+ strlcpy(adap->name, pdev->name, sizeof(adap->name));
+ adap->class = I2C_CLASS_DEPRECATED;
+ adap->algo = &selftest_i2c_algo;
+ adap->dev.parent = dev;
+ adap->dev.of_node = dev->of_node;
+ adap->timeout = 5 * HZ;
+ adap->retries = 3;
+
+ ret = i2c_add_numbered_adapter(adap);
+ if (ret != 0) {
+ dev_err(dev, "Failed to add I2C adapter\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int selftest_i2c_bus_remove(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+ struct selftest_i2c_bus_data *std = platform_get_drvdata(pdev);
+
+ dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
+ i2c_del_adapter(&std->adap);
+
+ return 0;
+}
+
+static struct of_device_id selftest_i2c_bus_match[] = {
+ { .compatible = "selftest-i2c-bus", },
+ {},
+};
+
+static struct platform_driver selftest_i2c_bus_driver = {
+ .probe = selftest_i2c_bus_probe,
+ .remove = selftest_i2c_bus_remove,
+ .driver = {
+ .name = "selftest-i2c-bus",
+ .of_match_table = of_match_ptr(selftest_i2c_bus_match),
+ },
+};
+
+static int selftest_i2c_dev_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct device_node *np = client->dev.of_node;
+
+ if (!np) {
+ dev_err(dev, "No OF node\n");
+ return -EINVAL;
+ }
+
+ dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
+
+ return 0;
+};
+
+static int selftest_i2c_dev_remove(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct device_node *np = client->dev.of_node;
+
+ dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
+ return 0;
+}
+
+static const struct i2c_device_id selftest_i2c_dev_id[] = {
+ { .name = "selftest-i2c-dev" },
+ { }
+};
+
+static struct i2c_driver selftest_i2c_dev_driver = {
+ .driver = {
+ .name = "selftest-i2c-dev",
+ .owner = THIS_MODULE,
+ },
+ .probe = selftest_i2c_dev_probe,
+ .remove = selftest_i2c_dev_remove,
+ .id_table = selftest_i2c_dev_id,
+};
+
+#if IS_ENABLED(CONFIG_I2C_MUX)
+
+struct selftest_i2c_mux_data {
+ int nchans;
+ struct i2c_adapter *adap[];
+};
+
+static int selftest_i2c_mux_select_chan(struct i2c_adapter *adap,
+ void *client, u32 chan)
+{
+ return 0;
+}
+
+static int selftest_i2c_mux_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ int ret, i, nchans, size;
+ struct device *dev = &client->dev;
+ struct i2c_adapter *adap = to_i2c_adapter(dev->parent);
+ struct device_node *np = client->dev.of_node, *child;
+ struct selftest_i2c_mux_data *stm;
+ u32 reg, max_reg;
+
+ dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
+
+ if (!np) {
+ dev_err(dev, "No OF node\n");
+ return -EINVAL;
+ }
+
+ max_reg = (u32)-1;
+ for_each_child_of_node(np, child) {
+ ret = of_property_read_u32(child, "reg", ®);
+ if (ret)
+ continue;
+ if (max_reg == (u32)-1 || reg > max_reg)
+ max_reg = reg;
+ }
+ nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
+ if (nchans == 0) {
+ dev_err(dev, "No channels\n");
+ return -EINVAL;
+ }
+
+ size = offsetof(struct selftest_i2c_mux_data, adap[nchans]);
+ stm = devm_kzalloc(dev, size, GFP_KERNEL);
+ if (!stm) {
+ dev_err(dev, "Out of memory\n");
+ return -ENOMEM;
+ }
+ stm->nchans = nchans;
+ for (i = 0; i < nchans; i++) {
+ stm->adap[i] = i2c_add_mux_adapter(adap, dev, client,
+ 0, i, 0, selftest_i2c_mux_select_chan, NULL);
+ if (!stm->adap[i]) {
+ dev_err(dev, "Failed to register mux #%d\n", i);
+ for (i--; i >= 0; i--)
+ i2c_del_mux_adapter(stm->adap[i]);
+ return -ENODEV;
+ }
+ }
+
+ i2c_set_clientdata(client, stm);
+
+ return 0;
+};
+
+static int selftest_i2c_mux_remove(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct device_node *np = client->dev.of_node;
+ struct selftest_i2c_mux_data *stm = i2c_get_clientdata(client);
+ int i;
+
+ dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
+ for (i = stm->nchans - 1; i >= 0; i--)
+ i2c_del_mux_adapter(stm->adap[i]);
+ return 0;
+}
+
+static const struct i2c_device_id selftest_i2c_mux_id[] = {
+ { .name = "selftest-i2c-mux" },
+ { }
+};
+
+static struct i2c_driver selftest_i2c_mux_driver = {
+ .driver = {
+ .name = "selftest-i2c-mux",
+ .owner = THIS_MODULE,
+ },
+ .probe = selftest_i2c_mux_probe,
+ .remove = selftest_i2c_mux_remove,
+ .id_table = selftest_i2c_mux_id,
+};
+
+#endif
+
+static int of_selftest_overlay_i2c_init(void)
+{
+ int ret;
+
+ ret = i2c_add_driver(&selftest_i2c_dev_driver);
+ if (selftest(ret == 0,
+ "could not register selftest i2c device driver\n"))
+ return ret;
+
+ ret = platform_driver_register(&selftest_i2c_bus_driver);
+ if (selftest(ret == 0,
+ "could not register selftest i2c bus driver\n"))
+ return ret;
+
+#if IS_ENABLED(CONFIG_I2C_MUX)
+ ret = i2c_add_driver(&selftest_i2c_mux_driver);
+ if (selftest(ret == 0,
+ "could not register selftest i2c mux driver\n"))
+ return ret;
+#endif
+
+ return 0;
+}
+
+static void of_selftest_overlay_i2c_cleanup(void)
+{
+#if IS_ENABLED(CONFIG_I2C_MUX)
+ i2c_del_driver(&selftest_i2c_mux_driver);
+#endif
+ platform_driver_unregister(&selftest_i2c_bus_driver);
+ i2c_del_driver(&selftest_i2c_dev_driver);
+}
+
+static void of_selftest_overlay_i2c_12(void)
+{
+ int ret;
+
+ /* device should enable */
+ ret = of_selftest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
+ if (ret != 0)
+ return;
+
+ selftest(1, "overlay test %d passed\n", 12);
+}
+
+/* test deactivation of device */
+static void of_selftest_overlay_i2c_13(void)
+{
+ int ret;
+
+ /* device should disable */
+ ret = of_selftest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
+ if (ret != 0)
+ return;
+
+ selftest(1, "overlay test %d passed\n", 13);
+}
+
+/* just check for i2c mux existence */
+static void of_selftest_overlay_i2c_14(void)
+{
+}
+
+static void of_selftest_overlay_i2c_15(void)
+{
+ int ret;
+
+ /* device should enable */
+ ret = of_selftest_apply_overlay_check(16, 15, 0, 1, I2C_OVERLAY);
+ if (ret != 0)
+ return;
+
+ selftest(1, "overlay test %d passed\n", 15);
+}
+
+#else
+
+static inline void of_selftest_overlay_i2c_14(void) { }
+static inline void of_selftest_overlay_i2c_15(void) { }
+
+#endif
+
+static void __init of_selftest_overlay(void)
+{
+ struct device_node *bus_np = NULL;
+ int ret;
+
+ ret = platform_driver_register(&selftest_driver);
+ if (ret != 0) {
+ selftest(0, "could not register selftest driver\n");
+ goto out;
+ }
+
+ bus_np = of_find_node_by_path(bus_path);
+ if (bus_np == NULL) {
+ selftest(0, "could not find bus_path \"%s\"\n", bus_path);
+ goto out;
+ }
+
+ ret = of_platform_populate(bus_np, of_default_bus_match_table,
+ NULL, NULL);
+ if (ret != 0) {
+ selftest(0, "could not populate bus @ \"%s\"\n", bus_path);
+ goto out;
+ }
+
+ if (!of_selftest_device_exists(100, PDEV_OVERLAY)) {
+ selftest(0, "could not find selftest0 @ \"%s\"\n",
+ selftest_path(100, PDEV_OVERLAY));
+ goto out;
+ }
+
+ if (of_selftest_device_exists(101, PDEV_OVERLAY)) {
+ selftest(0, "selftest1 @ \"%s\" should not exist\n",
+ selftest_path(101, PDEV_OVERLAY));
+ goto out;
+ }
+
+ selftest(1, "basic infrastructure of overlays passed");
+
+ /* tests in sequence */
+ of_selftest_overlay_0();
+ of_selftest_overlay_1();
+ of_selftest_overlay_2();
+ of_selftest_overlay_3();
+ of_selftest_overlay_4();
+ of_selftest_overlay_5();
+ of_selftest_overlay_6();
+ of_selftest_overlay_8();
+
+ of_selftest_overlay_10();
+ of_selftest_overlay_11();
+
+#if IS_ENABLED(CONFIG_I2C)
+ if (selftest(of_selftest_overlay_i2c_init() == 0, "i2c init failed\n"))
+ goto out;
+
+ of_selftest_overlay_i2c_12();
+ of_selftest_overlay_i2c_13();
+ of_selftest_overlay_i2c_14();
+ of_selftest_overlay_i2c_15();
+
+ of_selftest_overlay_i2c_cleanup();
+#endif
+
+out:
+ of_node_put(bus_np);
+}
+
+#else
+static inline void __init of_selftest_overlay(void) { }
+#endif
+
+static int __init of_selftest(void)
+{
+ struct device_node *np;
+ int res;
+
+ /* adding data for selftest */
+ res = selftest_data_add();
+ if (res)
+ return res;
+ if (!of_aliases)
+ of_aliases = of_find_node_by_path("/aliases");
+
+ np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
+ if (!np) {
+ pr_info("No testcase data in device tree; not running tests\n");
+ return 0;
+ }
+ of_node_put(np);
+
+ pr_info("start of selftest - you will see error messages\n");
+ of_selftest_check_tree_linkage();
+ of_selftest_check_phandles();
+ of_selftest_find_node_by_name();
+ of_selftest_dynamic();
+ of_selftest_parse_phandle_with_args();
+ of_selftest_property_string();
+ of_selftest_property_copy();
+ of_selftest_changeset();
+ of_selftest_parse_interrupts();
+ of_selftest_parse_interrupts_extended();
+ of_selftest_match_node();
+ of_selftest_platform_populate();
+ of_selftest_overlay();
+
+ /* Double check linkage after removing testcase data */
+ of_selftest_check_tree_linkage();
+
+ pr_info("end of selftest - %i passed, %i failed\n",
+ selftest_results.passed, selftest_results.failed);
+
+ return 0;
+}
+late_initcall(of_selftest);
Index: b/drivers/of/unittest.c
===================================================================
--- a/drivers/of/unittest.c
+++ /dev/null
@@ -1,1879 +0,0 @@
-/*
- * Self tests for device tree subsystem
- */
-
-#define pr_fmt(fmt) "### dt-test ### " fmt
-
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/errno.h>
-#include <linux/hashtable.h>
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_fdt.h>
-#include <linux/of_irq.h>
-#include <linux/of_platform.h>
-#include <linux/list.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
-#include <linux/of_platform.h>
-
-#include <linux/i2c.h>
-#include <linux/i2c-mux.h>
-
-#include "of_private.h"
-
-static struct selftest_results {
- int passed;
- int failed;
-} selftest_results;
-
-#define selftest(result, fmt, ...) ({ \
- bool failed = !(result); \
- if (failed) { \
- selftest_results.failed++; \
- pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
- } else { \
- selftest_results.passed++; \
- pr_debug("pass %s():%i\n", __func__, __LINE__); \
- } \
- failed; \
-})
-
-static void __init of_selftest_find_node_by_name(void)
-{
- struct device_node *np;
- const char *options;
-
- 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);
-
- np = of_find_node_opts_by_path("/testcase-data:testoption", &options);
- selftest(np && !strcmp("testoption", options),
- "option path test failed\n");
- of_node_put(np);
-
- np = of_find_node_opts_by_path("/testcase-data:testoption", NULL);
- selftest(np, "NULL option path test failed\n");
- of_node_put(np);
-
- np = of_find_node_opts_by_path("testcase-alias:testaliasoption",
- &options);
- selftest(np && !strcmp("testaliasoption", options),
- "option alias path test failed\n");
- of_node_put(np);
-
- np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL);
- selftest(np, "NULL option alias path test failed\n");
- of_node_put(np);
-
- options = "testoption";
- np = of_find_node_opts_by_path("testcase-alias", &options);
- selftest(np && !options, "option clearing test failed\n");
- of_node_put(np);
-
- options = "testoption";
- np = of_find_node_opts_by_path("/", &options);
- selftest(np && !options, "option clearing root node test failed\n");
- of_node_put(np);
-}
-
-static void __init of_selftest_dynamic(void)
-{
- struct device_node *np;
- struct property *prop;
-
- np = of_find_node_by_path("/testcase-data");
- if (!np) {
- pr_err("missing testcase data\n");
- return;
- }
-
- /* Array of 4 properties for the purpose of testing */
- prop = kzalloc(sizeof(*prop) * 4, GFP_KERNEL);
- if (!prop) {
- selftest(0, "kzalloc() failed\n");
- return;
- }
-
- /* Add a new property - should pass*/
- prop->name = "new-property";
- prop->value = "new-property-data";
- prop->length = strlen(prop->value);
- selftest(of_add_property(np, prop) == 0, "Adding a new property failed\n");
-
- /* Try to add an existing property - should fail */
- prop++;
- prop->name = "new-property";
- prop->value = "new-property-data-should-fail";
- prop->length = strlen(prop->value);
- selftest(of_add_property(np, prop) != 0,
- "Adding an existing property should have failed\n");
-
- /* Try to modify an existing property - should pass */
- prop->value = "modify-property-data-should-pass";
- prop->length = strlen(prop->value);
- selftest(of_update_property(np, prop) == 0,
- "Updating an existing property should have passed\n");
-
- /* Try to modify non-existent property - should pass*/
- prop++;
- prop->name = "modify-property";
- prop->value = "modify-missing-property-data-should-pass";
- prop->length = strlen(prop->value);
- selftest(of_update_property(np, prop) == 0,
- "Updating a missing property should have passed\n");
-
- /* Remove property - should pass */
- selftest(of_remove_property(np, prop) == 0,
- "Removing a property should have passed\n");
-
- /* Adding very large property - should pass */
- prop++;
- prop->name = "large-property-PAGE_SIZEx8";
- prop->length = PAGE_SIZE * 8;
- prop->value = kzalloc(prop->length, GFP_KERNEL);
- selftest(prop->value != NULL, "Unable to allocate large buffer\n");
- if (prop->value)
- selftest(of_add_property(np, prop) == 0,
- "Adding a large property should have passed\n");
-}
-
-static int __init of_selftest_check_node_linkage(struct device_node *np)
-{
- struct device_node *child;
- int count = 0, rc;
-
- for_each_child_of_node(np, child) {
- if (child->parent != np) {
- pr_err("Child node %s links to wrong parent %s\n",
- child->name, np->name);
- return -EINVAL;
- }
-
- rc = of_selftest_check_node_linkage(child);
- if (rc < 0)
- return rc;
- count += rc;
- }
-
- return count + 1;
-}
-
-static void __init of_selftest_check_tree_linkage(void)
-{
- struct device_node *np;
- int allnode_count = 0, child_count;
-
- if (!of_root)
- return;
-
- for_each_of_allnodes(np)
- allnode_count++;
- child_count = of_selftest_check_node_linkage(of_root);
-
- selftest(child_count > 0, "Device node data structure is corrupted\n");
- selftest(child_count == allnode_count, "allnodes list size (%i) doesn't match"
- "sibling lists size (%i)\n", allnode_count, child_count);
- pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count);
-}
-
-struct node_hash {
- struct hlist_node node;
- struct device_node *np;
-};
-
-static DEFINE_HASHTABLE(phandle_ht, 8);
-static void __init of_selftest_check_phandles(void)
-{
- struct device_node *np;
- struct node_hash *nh;
- struct hlist_node *tmp;
- int i, dup_count = 0, phandle_count = 0;
-
- for_each_of_allnodes(np) {
- if (!np->phandle)
- continue;
-
- hash_for_each_possible(phandle_ht, nh, node, np->phandle) {
- if (nh->np->phandle == np->phandle) {
- pr_info("Duplicate phandle! %i used by %s and %s\n",
- np->phandle, nh->np->full_name, np->full_name);
- dup_count++;
- break;
- }
- }
-
- nh = kzalloc(sizeof(*nh), GFP_KERNEL);
- if (WARN_ON(!nh))
- return;
-
- nh->np = np;
- hash_add(phandle_ht, &nh->node, np->phandle);
- phandle_count++;
- }
- selftest(dup_count == 0, "Found %i duplicates in %i phandles\n",
- dup_count, phandle_count);
-
- /* Clean up */
- hash_for_each_safe(phandle_ht, i, tmp, nh, node) {
- hash_del(&nh->node);
- kfree(nh);
- }
-}
-
-static void __init of_selftest_parse_phandle_with_args(void)
-{
- struct device_node *np;
- struct of_phandle_args args;
- int i, rc;
-
- np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
- if (!np) {
- pr_err("missing testcase data\n");
- return;
- }
-
- rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
- selftest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
-
- for (i = 0; i < 8; i++) {
- bool passed = true;
- rc = of_parse_phandle_with_args(np, "phandle-list",
- "#phandle-cells", i, &args);
-
- /* Test the values from tests-phandle.dtsi */
- switch (i) {
- case 0:
- passed &= !rc;
- passed &= (args.args_count == 1);
- passed &= (args.args[0] == (i + 1));
- break;
- case 1:
- passed &= !rc;
- passed &= (args.args_count == 2);
- passed &= (args.args[0] == (i + 1));
- passed &= (args.args[1] == 0);
- break;
- case 2:
- passed &= (rc == -ENOENT);
- break;
- case 3:
- passed &= !rc;
- passed &= (args.args_count == 3);
- passed &= (args.args[0] == (i + 1));
- passed &= (args.args[1] == 4);
- passed &= (args.args[2] == 3);
- break;
- case 4:
- passed &= !rc;
- passed &= (args.args_count == 2);
- passed &= (args.args[0] == (i + 1));
- passed &= (args.args[1] == 100);
- break;
- case 5:
- passed &= !rc;
- passed &= (args.args_count == 0);
- break;
- case 6:
- passed &= !rc;
- passed &= (args.args_count == 1);
- passed &= (args.args[0] == (i + 1));
- break;
- case 7:
- passed &= (rc == -ENOENT);
- break;
- default:
- passed = false;
- }
-
- selftest(passed, "index %i - data error on node %s rc=%i\n",
- i, args.np->full_name, rc);
- }
-
- /* Check for missing list property */
- rc = of_parse_phandle_with_args(np, "phandle-list-missing",
- "#phandle-cells", 0, &args);
- selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
- rc = of_count_phandle_with_args(np, "phandle-list-missing",
- "#phandle-cells");
- selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
-
- /* Check for missing cells property */
- rc = of_parse_phandle_with_args(np, "phandle-list",
- "#phandle-cells-missing", 0, &args);
- selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
- rc = of_count_phandle_with_args(np, "phandle-list",
- "#phandle-cells-missing");
- selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
-
- /* Check for bad phandle in list */
- rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
- "#phandle-cells", 0, &args);
- selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
- rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
- "#phandle-cells");
- selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
-
- /* Check for incorrectly formed argument list */
- rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
- "#phandle-cells", 1, &args);
- selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
- rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
- "#phandle-cells");
- selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
-}
-
-static void __init of_selftest_property_string(void)
-{
- const char *strings[4];
- struct device_node *np;
- int rc;
-
- np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
- if (!np) {
- pr_err("No testcase data in device tree\n");
- return;
- }
-
- rc = of_property_match_string(np, "phandle-list-names", "first");
- selftest(rc == 0, "first expected:0 got:%i\n", rc);
- rc = of_property_match_string(np, "phandle-list-names", "second");
- selftest(rc == 1, "second expected:0 got:%i\n", rc);
- rc = of_property_match_string(np, "phandle-list-names", "third");
- selftest(rc == 2, "third expected:0 got:%i\n", rc);
- rc = of_property_match_string(np, "phandle-list-names", "fourth");
- selftest(rc == -ENODATA, "unmatched string; rc=%i\n", rc);
- rc = of_property_match_string(np, "missing-property", "blah");
- selftest(rc == -EINVAL, "missing property; rc=%i\n", rc);
- rc = of_property_match_string(np, "empty-property", "blah");
- selftest(rc == -ENODATA, "empty property; rc=%i\n", rc);
- rc = of_property_match_string(np, "unterminated-string", "blah");
- selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
-
- /* of_property_count_strings() tests */
- rc = of_property_count_strings(np, "string-property");
- selftest(rc == 1, "Incorrect string count; rc=%i\n", rc);
- rc = of_property_count_strings(np, "phandle-list-names");
- selftest(rc == 3, "Incorrect string count; rc=%i\n", rc);
- rc = of_property_count_strings(np, "unterminated-string");
- selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
- rc = of_property_count_strings(np, "unterminated-string-list");
- selftest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
-
- /* of_property_read_string_index() tests */
- rc = of_property_read_string_index(np, "string-property", 0, strings);
- selftest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc);
- strings[0] = NULL;
- rc = of_property_read_string_index(np, "string-property", 1, strings);
- selftest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
- rc = of_property_read_string_index(np, "phandle-list-names", 0, strings);
- selftest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
- rc = of_property_read_string_index(np, "phandle-list-names", 1, strings);
- selftest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc);
- rc = of_property_read_string_index(np, "phandle-list-names", 2, strings);
- selftest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc);
- strings[0] = NULL;
- rc = of_property_read_string_index(np, "phandle-list-names", 3, strings);
- selftest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
- strings[0] = NULL;
- rc = of_property_read_string_index(np, "unterminated-string", 0, strings);
- selftest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
- rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings);
- selftest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
- strings[0] = NULL;
- rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */
- selftest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
- strings[1] = NULL;
-
- /* of_property_read_string_array() tests */
- rc = of_property_read_string_array(np, "string-property", strings, 4);
- selftest(rc == 1, "Incorrect string count; rc=%i\n", rc);
- rc = of_property_read_string_array(np, "phandle-list-names", strings, 4);
- selftest(rc == 3, "Incorrect string count; rc=%i\n", rc);
- rc = of_property_read_string_array(np, "unterminated-string", strings, 4);
- selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
- /* -- An incorrectly formed string should cause a failure */
- rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4);
- selftest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
- /* -- parsing the correctly formed strings should still work: */
- strings[2] = NULL;
- rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2);
- selftest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc);
- strings[1] = NULL;
- rc = of_property_read_string_array(np, "phandle-list-names", strings, 1);
- selftest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]);
-}
-
-#define propcmp(p1, p2) (((p1)->length == (p2)->length) && \
- (p1)->value && (p2)->value && \
- !memcmp((p1)->value, (p2)->value, (p1)->length) && \
- !strcmp((p1)->name, (p2)->name))
-static void __init of_selftest_property_copy(void)
-{
-#ifdef CONFIG_OF_DYNAMIC
- struct property p1 = { .name = "p1", .length = 0, .value = "" };
- struct property p2 = { .name = "p2", .length = 5, .value = "abcd" };
- struct property *new;
-
- new = __of_prop_dup(&p1, GFP_KERNEL);
- selftest(new && propcmp(&p1, new), "empty property didn't copy correctly\n");
- kfree(new->value);
- kfree(new->name);
- kfree(new);
-
- new = __of_prop_dup(&p2, GFP_KERNEL);
- selftest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n");
- kfree(new->value);
- kfree(new->name);
- kfree(new);
-#endif
-}
-
-static void __init of_selftest_changeset(void)
-{
-#ifdef CONFIG_OF_DYNAMIC
- struct property *ppadd, padd = { .name = "prop-add", .length = 0, .value = "" };
- struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" };
- struct property *ppremove;
- struct device_node *n1, *n2, *n21, *nremove, *parent, *np;
- struct of_changeset chgset;
-
- of_changeset_init(&chgset);
- n1 = __of_node_dup(NULL, "/testcase-data/changeset/n1");
- selftest(n1, "testcase setup failure\n");
- n2 = __of_node_dup(NULL, "/testcase-data/changeset/n2");
- selftest(n2, "testcase setup failure\n");
- n21 = __of_node_dup(NULL, "%s/%s", "/testcase-data/changeset/n2", "n21");
- selftest(n21, "testcase setup failure %p\n", n21);
- nremove = of_find_node_by_path("/testcase-data/changeset/node-remove");
- selftest(nremove, "testcase setup failure\n");
- ppadd = __of_prop_dup(&padd, GFP_KERNEL);
- selftest(ppadd, "testcase setup failure\n");
- ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
- selftest(ppupdate, "testcase setup failure\n");
- parent = nremove->parent;
- n1->parent = parent;
- n2->parent = parent;
- n21->parent = n2;
- n2->child = n21;
- ppremove = of_find_property(parent, "prop-remove", NULL);
- selftest(ppremove, "failed to find removal prop");
-
- of_changeset_init(&chgset);
- selftest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n");
- selftest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n");
- selftest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n");
- selftest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n");
- selftest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop\n");
- selftest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n");
- selftest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n");
- mutex_lock(&of_mutex);
- selftest(!of_changeset_apply(&chgset), "apply failed\n");
- mutex_unlock(&of_mutex);
-
- /* Make sure node names are constructed correctly */
- selftest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")),
- "'%s' not added\n", n21->full_name);
- of_node_put(np);
-
- mutex_lock(&of_mutex);
- selftest(!of_changeset_revert(&chgset), "revert failed\n");
- mutex_unlock(&of_mutex);
-
- of_changeset_destroy(&chgset);
-#endif
-}
-
-static void __init of_selftest_parse_interrupts(void)
-{
- struct device_node *np;
- struct of_phandle_args args;
- int i, rc;
-
- np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
- if (!np) {
- pr_err("missing testcase data\n");
- return;
- }
-
- for (i = 0; i < 4; i++) {
- bool passed = true;
- args.args_count = 0;
- rc = of_irq_parse_one(np, i, &args);
-
- passed &= !rc;
- passed &= (args.args_count == 1);
- passed &= (args.args[0] == (i + 1));
-
- selftest(passed, "index %i - data error on node %s rc=%i\n",
- i, args.np->full_name, rc);
- }
- of_node_put(np);
-
- np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
- if (!np) {
- pr_err("missing testcase data\n");
- return;
- }
-
- for (i = 0; i < 4; i++) {
- bool passed = true;
- args.args_count = 0;
- rc = of_irq_parse_one(np, i, &args);
-
- /* Test the values from tests-phandle.dtsi */
- switch (i) {
- case 0:
- passed &= !rc;
- passed &= (args.args_count == 1);
- passed &= (args.args[0] == 9);
- break;
- case 1:
- passed &= !rc;
- passed &= (args.args_count == 3);
- passed &= (args.args[0] == 10);
- passed &= (args.args[1] == 11);
- passed &= (args.args[2] == 12);
- break;
- case 2:
- passed &= !rc;
- passed &= (args.args_count == 2);
- passed &= (args.args[0] == 13);
- passed &= (args.args[1] == 14);
- break;
- case 3:
- passed &= !rc;
- passed &= (args.args_count == 2);
- passed &= (args.args[0] == 15);
- passed &= (args.args[1] == 16);
- break;
- default:
- passed = false;
- }
- selftest(passed, "index %i - data error on node %s rc=%i\n",
- i, args.np->full_name, rc);
- }
- of_node_put(np);
-}
-
-static void __init of_selftest_parse_interrupts_extended(void)
-{
- struct device_node *np;
- struct of_phandle_args args;
- int i, rc;
-
- np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
- if (!np) {
- pr_err("missing testcase data\n");
- return;
- }
-
- for (i = 0; i < 7; i++) {
- bool passed = true;
- rc = of_irq_parse_one(np, i, &args);
-
- /* Test the values from tests-phandle.dtsi */
- switch (i) {
- case 0:
- passed &= !rc;
- passed &= (args.args_count == 1);
- passed &= (args.args[0] == 1);
- break;
- case 1:
- passed &= !rc;
- passed &= (args.args_count == 3);
- passed &= (args.args[0] == 2);
- passed &= (args.args[1] == 3);
- passed &= (args.args[2] == 4);
- break;
- case 2:
- passed &= !rc;
- passed &= (args.args_count == 2);
- passed &= (args.args[0] == 5);
- passed &= (args.args[1] == 6);
- break;
- case 3:
- passed &= !rc;
- passed &= (args.args_count == 1);
- passed &= (args.args[0] == 9);
- break;
- case 4:
- passed &= !rc;
- passed &= (args.args_count == 3);
- passed &= (args.args[0] == 10);
- passed &= (args.args[1] == 11);
- passed &= (args.args[2] == 12);
- break;
- case 5:
- passed &= !rc;
- passed &= (args.args_count == 2);
- passed &= (args.args[0] == 13);
- passed &= (args.args[1] == 14);
- break;
- case 6:
- passed &= !rc;
- passed &= (args.args_count == 1);
- passed &= (args.args[0] == 15);
- break;
- default:
- passed = false;
- }
-
- selftest(passed, "index %i - data error on node %s rc=%i\n",
- i, args.np->full_name, rc);
- }
- of_node_put(np);
-}
-
-static struct of_device_id match_node_table[] = {
- { .data = "A", .name = "name0", }, /* Name alone is lowest priority */
- { .data = "B", .type = "type1", }, /* followed by type alone */
-
- { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
- { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
- { .data = "Cc", .name = "name2", .type = "type2", },
-
- { .data = "E", .compatible = "compat3" },
- { .data = "G", .compatible = "compat2", },
- { .data = "H", .compatible = "compat2", .name = "name5", },
- { .data = "I", .compatible = "compat2", .type = "type1", },
- { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
- { .data = "K", .compatible = "compat2", .name = "name9", },
- {}
-};
-
-static struct {
- const char *path;
- const char *data;
-} match_node_tests[] = {
- { .path = "/testcase-data/match-node/name0", .data = "A", },
- { .path = "/testcase-data/match-node/name1", .data = "B", },
- { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
- { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
- { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
- { .path = "/testcase-data/match-node/name3", .data = "E", },
- { .path = "/testcase-data/match-node/name4", .data = "G", },
- { .path = "/testcase-data/match-node/name5", .data = "H", },
- { .path = "/testcase-data/match-node/name6", .data = "G", },
- { .path = "/testcase-data/match-node/name7", .data = "I", },
- { .path = "/testcase-data/match-node/name8", .data = "J", },
- { .path = "/testcase-data/match-node/name9", .data = "K", },
-};
-
-static void __init of_selftest_match_node(void)
-{
- struct device_node *np;
- const struct of_device_id *match;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
- np = of_find_node_by_path(match_node_tests[i].path);
- if (!np) {
- selftest(0, "missing testcase node %s\n",
- match_node_tests[i].path);
- continue;
- }
-
- match = of_match_node(match_node_table, np);
- if (!match) {
- selftest(0, "%s didn't match anything\n",
- match_node_tests[i].path);
- continue;
- }
-
- if (strcmp(match->data, match_node_tests[i].data) != 0) {
- selftest(0, "%s got wrong match. expected %s, got %s\n",
- match_node_tests[i].path, match_node_tests[i].data,
- (const char *)match->data);
- continue;
- }
- selftest(1, "passed");
- }
-}
-
-struct device test_bus = {
- .init_name = "unittest-bus",
-};
-static void __init of_selftest_platform_populate(void)
-{
- int irq, rc;
- struct device_node *np, *child, *grandchild;
- 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);
-
- /* 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);
- selftest(pdev, "device 1 creation failed\n");
-
- irq = platform_get_irq(pdev, 0);
- 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);
- selftest(pdev, "device 2 creation failed\n");
- irq = platform_get_irq(pdev, 0);
- selftest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq);
-
- if (selftest(np = of_find_node_by_path("/testcase-data/platform-tests"),
- "No testcase data in device tree\n"));
- return;
-
- if (selftest(!(rc = device_register(&test_bus)),
- "testbus registration failed; rc=%i\n", rc));
- return;
-
- for_each_child_of_node(np, child) {
- of_platform_populate(child, match, NULL, &test_bus);
- for_each_child_of_node(child, grandchild)
- selftest(of_find_device_by_node(grandchild),
- "Could not create device for node '%s'\n",
- grandchild->name);
- }
-
- of_platform_depopulate(&test_bus);
- for_each_child_of_node(np, child) {
- for_each_child_of_node(child, grandchild)
- selftest(!of_find_device_by_node(grandchild),
- "device didn't get destroyed '%s'\n",
- grandchild->name);
- }
-
- device_unregister(&test_bus);
- of_node_put(np);
-}
-
-/**
- * update_node_properties - adds the properties
- * of np into dup node (present in live tree) and
- * updates parent of children of np to dup.
- *
- * @np: node already present in live tree
- * @dup: node present in live tree to be updated
- */
-static void update_node_properties(struct device_node *np,
- struct device_node *dup)
-{
- struct property *prop;
- struct device_node *child;
-
- for_each_property_of_node(np, prop)
- of_add_property(dup, prop);
-
- for_each_child_of_node(np, child)
- child->parent = dup;
-}
-
-/**
- * attach_node_and_children - attaches nodes
- * and its children to live tree
- *
- * @np: Node to attach to live tree
- */
-static int attach_node_and_children(struct device_node *np)
-{
- struct device_node *next, *dup, *child;
- unsigned long flags;
-
- dup = of_find_node_by_path(np->full_name);
- if (dup) {
- update_node_properties(np, dup);
- return 0;
- }
-
- child = np->child;
- np->child = NULL;
-
- mutex_lock(&of_mutex);
- raw_spin_lock_irqsave(&devtree_lock, flags);
- np->sibling = np->parent->child;
- np->parent->child = np;
- of_node_clear_flag(np, OF_DETACHED);
- raw_spin_unlock_irqrestore(&devtree_lock, flags);
-
- __of_attach_node_sysfs(np);
- mutex_unlock(&of_mutex);
-
- while (child) {
- next = child->sibling;
- attach_node_and_children(child);
- child = next;
- }
-
- return 0;
-}
-
-/**
- * selftest_data_add - Reads, copies data from
- * linked tree and attaches it to the live tree
- */
-static int __init selftest_data_add(void)
-{
- void *selftest_data;
- struct device_node *selftest_data_node, *np;
- extern uint8_t __dtb_testcases_begin[];
- extern uint8_t __dtb_testcases_end[];
- const int size = __dtb_testcases_end - __dtb_testcases_begin;
- int rc;
-
- if (!size) {
- pr_warn("%s: No testcase data to attach; not running tests\n",
- __func__);
- return -ENODATA;
- }
-
- /* creating copy */
- selftest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL);
-
- if (!selftest_data) {
- pr_warn("%s: Failed to allocate memory for selftest_data; "
- "not running tests\n", __func__);
- return -ENOMEM;
- }
- of_fdt_unflatten_tree(selftest_data, &selftest_data_node);
- if (!selftest_data_node) {
- pr_warn("%s: No tree to attach; not running tests\n", __func__);
- return -ENODATA;
- }
- of_node_set_flag(selftest_data_node, OF_DETACHED);
- rc = of_resolve_phandles(selftest_data_node);
- if (rc) {
- pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
- return -EINVAL;
- }
-
- if (!of_root) {
- of_root = selftest_data_node;
- for_each_of_allnodes(np)
- __of_attach_node_sysfs(np);
- of_aliases = of_find_node_by_path("/aliases");
- of_chosen = of_find_node_by_path("/chosen");
- return 0;
- }
-
- /* attach the sub-tree to live tree */
- np = selftest_data_node->child;
- while (np) {
- struct device_node *next = np->sibling;
- np->parent = of_root;
- attach_node_and_children(np);
- np = next;
- }
- return 0;
-}
-
-#ifdef CONFIG_OF_OVERLAY
-
-static int selftest_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct device_node *np = dev->of_node;
-
- if (np == NULL) {
- dev_err(dev, "No OF data for device\n");
- return -EINVAL;
-
- }
-
- dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
-
- of_platform_populate(np, NULL, NULL, &pdev->dev);
-
- return 0;
-}
-
-static int selftest_remove(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct device_node *np = dev->of_node;
-
- dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
- return 0;
-}
-
-static struct of_device_id selftest_match[] = {
- { .compatible = "selftest", },
- {},
-};
-
-static struct platform_driver selftest_driver = {
- .probe = selftest_probe,
- .remove = selftest_remove,
- .driver = {
- .name = "selftest",
- .owner = THIS_MODULE,
- .of_match_table = of_match_ptr(selftest_match),
- },
-};
-
-/* get the platform device instantiated at the path */
-static struct platform_device *of_path_to_platform_device(const char *path)
-{
- struct device_node *np;
- struct platform_device *pdev;
-
- np = of_find_node_by_path(path);
- if (np == NULL)
- return NULL;
-
- pdev = of_find_device_by_node(np);
- of_node_put(np);
-
- return pdev;
-}
-
-/* find out if a platform device exists at that path */
-static int of_path_platform_device_exists(const char *path)
-{
- struct platform_device *pdev;
-
- pdev = of_path_to_platform_device(path);
- platform_device_put(pdev);
- return pdev != NULL;
-}
-
-#if IS_ENABLED(CONFIG_I2C)
-
-/* get the i2c client device instantiated at the path */
-static struct i2c_client *of_path_to_i2c_client(const char *path)
-{
- struct device_node *np;
- struct i2c_client *client;
-
- np = of_find_node_by_path(path);
- if (np == NULL)
- return NULL;
-
- client = of_find_i2c_device_by_node(np);
- of_node_put(np);
-
- return client;
-}
-
-/* find out if a i2c client device exists at that path */
-static int of_path_i2c_client_exists(const char *path)
-{
- struct i2c_client *client;
-
- client = of_path_to_i2c_client(path);
- if (client)
- put_device(&client->dev);
- return client != NULL;
-}
-#else
-static int of_path_i2c_client_exists(const char *path)
-{
- return 0;
-}
-#endif
-
-enum overlay_type {
- PDEV_OVERLAY,
- I2C_OVERLAY
-};
-
-static int of_path_device_type_exists(const char *path,
- enum overlay_type ovtype)
-{
- switch (ovtype) {
- case PDEV_OVERLAY:
- return of_path_platform_device_exists(path);
- case I2C_OVERLAY:
- return of_path_i2c_client_exists(path);
- }
- return 0;
-}
-
-static const char *selftest_path(int nr, enum overlay_type ovtype)
-{
- const char *base;
- static char buf[256];
-
- switch (ovtype) {
- case PDEV_OVERLAY:
- base = "/testcase-data/overlay-node/test-bus";
- break;
- case I2C_OVERLAY:
- base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
- break;
- default:
- buf[0] = '\0';
- return buf;
- }
- snprintf(buf, sizeof(buf) - 1, "%s/test-selftest%d", base, nr);
- buf[sizeof(buf) - 1] = '\0';
- return buf;
-}
-
-static int of_selftest_device_exists(int selftest_nr, enum overlay_type ovtype)
-{
- const char *path;
-
- path = selftest_path(selftest_nr, ovtype);
-
- switch (ovtype) {
- case PDEV_OVERLAY:
- return of_path_platform_device_exists(path);
- case I2C_OVERLAY:
- return of_path_i2c_client_exists(path);
- }
- return 0;
-}
-
-static const char *overlay_path(int nr)
-{
- static char buf[256];
-
- snprintf(buf, sizeof(buf) - 1,
- "/testcase-data/overlay%d", nr);
- buf[sizeof(buf) - 1] = '\0';
-
- return buf;
-}
-
-static const char *bus_path = "/testcase-data/overlay-node/test-bus";
-
-static int of_selftest_apply_overlay(int selftest_nr, int overlay_nr,
- int *overlay_id)
-{
- struct device_node *np = NULL;
- int ret, id = -1;
-
- np = of_find_node_by_path(overlay_path(overlay_nr));
- if (np == NULL) {
- selftest(0, "could not find overlay node @\"%s\"\n",
- overlay_path(overlay_nr));
- ret = -EINVAL;
- goto out;
- }
-
- ret = of_overlay_create(np);
- if (ret < 0) {
- selftest(0, "could not create overlay from \"%s\"\n",
- overlay_path(overlay_nr));
- goto out;
- }
- id = ret;
-
- ret = 0;
-
-out:
- of_node_put(np);
-
- if (overlay_id)
- *overlay_id = id;
-
- return ret;
-}
-
-/* apply an overlay while checking before and after states */
-static int of_selftest_apply_overlay_check(int overlay_nr, int selftest_nr,
- int before, int after, enum overlay_type ovtype)
-{
- int ret;
-
- /* selftest device must not be in before state */
- if (of_selftest_device_exists(selftest_nr, ovtype) != before) {
- selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
- overlay_path(overlay_nr),
- selftest_path(selftest_nr, ovtype),
- !before ? "enabled" : "disabled");
- return -EINVAL;
- }
-
- ret = of_selftest_apply_overlay(overlay_nr, selftest_nr, NULL);
- if (ret != 0) {
- /* of_selftest_apply_overlay already called selftest() */
- return ret;
- }
-
- /* selftest device must be to set to after state */
- if (of_selftest_device_exists(selftest_nr, ovtype) != after) {
- selftest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
- overlay_path(overlay_nr),
- selftest_path(selftest_nr, ovtype),
- !after ? "enabled" : "disabled");
- return -EINVAL;
- }
-
- return 0;
-}
-
-/* apply an overlay and then revert it while checking before, after states */
-static int of_selftest_apply_revert_overlay_check(int overlay_nr,
- int selftest_nr, int before, int after,
- enum overlay_type ovtype)
-{
- int ret, ov_id;
-
- /* selftest device must be in before state */
- if (of_selftest_device_exists(selftest_nr, ovtype) != before) {
- selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
- overlay_path(overlay_nr),
- selftest_path(selftest_nr, ovtype),
- !before ? "enabled" : "disabled");
- return -EINVAL;
- }
-
- /* apply the overlay */
- ret = of_selftest_apply_overlay(overlay_nr, selftest_nr, &ov_id);
- if (ret != 0) {
- /* of_selftest_apply_overlay already called selftest() */
- return ret;
- }
-
- /* selftest device must be in after state */
- if (of_selftest_device_exists(selftest_nr, ovtype) != after) {
- selftest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
- overlay_path(overlay_nr),
- selftest_path(selftest_nr, ovtype),
- !after ? "enabled" : "disabled");
- return -EINVAL;
- }
-
- ret = of_overlay_destroy(ov_id);
- if (ret != 0) {
- selftest(0, "overlay @\"%s\" failed to be destroyed @\"%s\"\n",
- overlay_path(overlay_nr),
- selftest_path(selftest_nr, ovtype));
- return ret;
- }
-
- /* selftest device must be again in before state */
- if (of_selftest_device_exists(selftest_nr, PDEV_OVERLAY) != before) {
- selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
- overlay_path(overlay_nr),
- selftest_path(selftest_nr, ovtype),
- !before ? "enabled" : "disabled");
- return -EINVAL;
- }
-
- return 0;
-}
-
-/* test activation of device */
-static void of_selftest_overlay_0(void)
-{
- int ret;
-
- /* device should enable */
- ret = of_selftest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
- if (ret != 0)
- return;
-
- selftest(1, "overlay test %d passed\n", 0);
-}
-
-/* test deactivation of device */
-static void of_selftest_overlay_1(void)
-{
- int ret;
-
- /* device should disable */
- ret = of_selftest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
- if (ret != 0)
- return;
-
- selftest(1, "overlay test %d passed\n", 1);
-}
-
-/* test activation of device */
-static void of_selftest_overlay_2(void)
-{
- int ret;
-
- /* device should enable */
- ret = of_selftest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
- if (ret != 0)
- return;
-
- selftest(1, "overlay test %d passed\n", 2);
-}
-
-/* test deactivation of device */
-static void of_selftest_overlay_3(void)
-{
- int ret;
-
- /* device should disable */
- ret = of_selftest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
- if (ret != 0)
- return;
-
- selftest(1, "overlay test %d passed\n", 3);
-}
-
-/* test activation of a full device node */
-static void of_selftest_overlay_4(void)
-{
- int ret;
-
- /* device should disable */
- ret = of_selftest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY);
- if (ret != 0)
- return;
-
- selftest(1, "overlay test %d passed\n", 4);
-}
-
-/* test overlay apply/revert sequence */
-static void of_selftest_overlay_5(void)
-{
- int ret;
-
- /* device should disable */
- ret = of_selftest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
- if (ret != 0)
- return;
-
- selftest(1, "overlay test %d passed\n", 5);
-}
-
-/* test overlay application in sequence */
-static void of_selftest_overlay_6(void)
-{
- struct device_node *np;
- int ret, i, ov_id[2];
- int overlay_nr = 6, selftest_nr = 6;
- int before = 0, after = 1;
-
- /* selftest device must be in before state */
- for (i = 0; i < 2; i++) {
- if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
- != before) {
- selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
- overlay_path(overlay_nr + i),
- selftest_path(selftest_nr + i,
- PDEV_OVERLAY),
- !before ? "enabled" : "disabled");
- return;
- }
- }
-
- /* apply the overlays */
- for (i = 0; i < 2; i++) {
-
- np = of_find_node_by_path(overlay_path(overlay_nr + i));
- if (np == NULL) {
- selftest(0, "could not find overlay node @\"%s\"\n",
- overlay_path(overlay_nr + i));
- return;
- }
-
- ret = of_overlay_create(np);
- if (ret < 0) {
- selftest(0, "could not create overlay from \"%s\"\n",
- overlay_path(overlay_nr + i));
- return;
- }
- ov_id[i] = ret;
- }
-
- for (i = 0; i < 2; i++) {
- /* selftest device must be in after state */
- if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
- != after) {
- selftest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
- overlay_path(overlay_nr + i),
- selftest_path(selftest_nr + i,
- PDEV_OVERLAY),
- !after ? "enabled" : "disabled");
- return;
- }
- }
-
- for (i = 1; i >= 0; i--) {
- ret = of_overlay_destroy(ov_id[i]);
- if (ret != 0) {
- selftest(0, "overlay @\"%s\" failed destroy @\"%s\"\n",
- overlay_path(overlay_nr + i),
- selftest_path(selftest_nr + i,
- PDEV_OVERLAY));
- return;
- }
- }
-
- for (i = 0; i < 2; i++) {
- /* selftest device must be again in before state */
- if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
- != before) {
- selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
- overlay_path(overlay_nr + i),
- selftest_path(selftest_nr + i,
- PDEV_OVERLAY),
- !before ? "enabled" : "disabled");
- return;
- }
- }
-
- selftest(1, "overlay test %d passed\n", 6);
-}
-
-/* test overlay application in sequence */
-static void of_selftest_overlay_8(void)
-{
- struct device_node *np;
- int ret, i, ov_id[2];
- int overlay_nr = 8, selftest_nr = 8;
-
- /* we don't care about device state in this test */
-
- /* apply the overlays */
- for (i = 0; i < 2; i++) {
-
- np = of_find_node_by_path(overlay_path(overlay_nr + i));
- if (np == NULL) {
- selftest(0, "could not find overlay node @\"%s\"\n",
- overlay_path(overlay_nr + i));
- return;
- }
-
- ret = of_overlay_create(np);
- if (ret < 0) {
- selftest(0, "could not create overlay from \"%s\"\n",
- overlay_path(overlay_nr + i));
- return;
- }
- ov_id[i] = ret;
- }
-
- /* now try to remove first overlay (it should fail) */
- ret = of_overlay_destroy(ov_id[0]);
- if (ret == 0) {
- selftest(0, "overlay @\"%s\" was destroyed @\"%s\"\n",
- overlay_path(overlay_nr + 0),
- selftest_path(selftest_nr,
- PDEV_OVERLAY));
- return;
- }
-
- /* removing them in order should work */
- for (i = 1; i >= 0; i--) {
- ret = of_overlay_destroy(ov_id[i]);
- if (ret != 0) {
- selftest(0, "overlay @\"%s\" not destroyed @\"%s\"\n",
- overlay_path(overlay_nr + i),
- selftest_path(selftest_nr,
- PDEV_OVERLAY));
- return;
- }
- }
-
- selftest(1, "overlay test %d passed\n", 8);
-}
-
-/* test insertion of a bus with parent devices */
-static void of_selftest_overlay_10(void)
-{
- int ret;
- char *child_path;
-
- /* device should disable */
- ret = of_selftest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
- if (selftest(ret == 0,
- "overlay test %d failed; overlay application\n", 10))
- return;
-
- child_path = kasprintf(GFP_KERNEL, "%s/test-selftest101",
- selftest_path(10, PDEV_OVERLAY));
- if (selftest(child_path, "overlay test %d failed; kasprintf\n", 10))
- return;
-
- ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
- kfree(child_path);
- if (selftest(ret, "overlay test %d failed; no child device\n", 10))
- return;
-}
-
-/* test insertion of a bus with parent devices (and revert) */
-static void of_selftest_overlay_11(void)
-{
- int ret;
-
- /* device should disable */
- ret = of_selftest_apply_revert_overlay_check(11, 11, 0, 1,
- PDEV_OVERLAY);
- if (selftest(ret == 0,
- "overlay test %d failed; overlay application\n", 11))
- return;
-}
-
-#if IS_ENABLED(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
-
-struct selftest_i2c_bus_data {
- struct platform_device *pdev;
- struct i2c_adapter adap;
-};
-
-static int selftest_i2c_master_xfer(struct i2c_adapter *adap,
- struct i2c_msg *msgs, int num)
-{
- struct selftest_i2c_bus_data *std = i2c_get_adapdata(adap);
-
- (void)std;
-
- return num;
-}
-
-static u32 selftest_i2c_functionality(struct i2c_adapter *adap)
-{
- return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
-}
-
-static const struct i2c_algorithm selftest_i2c_algo = {
- .master_xfer = selftest_i2c_master_xfer,
- .functionality = selftest_i2c_functionality,
-};
-
-static int selftest_i2c_bus_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct device_node *np = dev->of_node;
- struct selftest_i2c_bus_data *std;
- struct i2c_adapter *adap;
- int ret;
-
- if (np == NULL) {
- dev_err(dev, "No OF data for device\n");
- return -EINVAL;
-
- }
-
- dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
-
- std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
- if (!std) {
- dev_err(dev, "Failed to allocate selftest i2c data\n");
- return -ENOMEM;
- }
-
- /* link them together */
- std->pdev = pdev;
- platform_set_drvdata(pdev, std);
-
- adap = &std->adap;
- i2c_set_adapdata(adap, std);
- adap->nr = -1;
- strlcpy(adap->name, pdev->name, sizeof(adap->name));
- adap->class = I2C_CLASS_DEPRECATED;
- adap->algo = &selftest_i2c_algo;
- adap->dev.parent = dev;
- adap->dev.of_node = dev->of_node;
- adap->timeout = 5 * HZ;
- adap->retries = 3;
-
- ret = i2c_add_numbered_adapter(adap);
- if (ret != 0) {
- dev_err(dev, "Failed to add I2C adapter\n");
- return ret;
- }
-
- return 0;
-}
-
-static int selftest_i2c_bus_remove(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct device_node *np = dev->of_node;
- struct selftest_i2c_bus_data *std = platform_get_drvdata(pdev);
-
- dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
- i2c_del_adapter(&std->adap);
-
- return 0;
-}
-
-static struct of_device_id selftest_i2c_bus_match[] = {
- { .compatible = "selftest-i2c-bus", },
- {},
-};
-
-static struct platform_driver selftest_i2c_bus_driver = {
- .probe = selftest_i2c_bus_probe,
- .remove = selftest_i2c_bus_remove,
- .driver = {
- .name = "selftest-i2c-bus",
- .of_match_table = of_match_ptr(selftest_i2c_bus_match),
- },
-};
-
-static int selftest_i2c_dev_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- struct device *dev = &client->dev;
- struct device_node *np = client->dev.of_node;
-
- if (!np) {
- dev_err(dev, "No OF node\n");
- return -EINVAL;
- }
-
- dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
-
- return 0;
-};
-
-static int selftest_i2c_dev_remove(struct i2c_client *client)
-{
- struct device *dev = &client->dev;
- struct device_node *np = client->dev.of_node;
-
- dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
- return 0;
-}
-
-static const struct i2c_device_id selftest_i2c_dev_id[] = {
- { .name = "selftest-i2c-dev" },
- { }
-};
-
-static struct i2c_driver selftest_i2c_dev_driver = {
- .driver = {
- .name = "selftest-i2c-dev",
- .owner = THIS_MODULE,
- },
- .probe = selftest_i2c_dev_probe,
- .remove = selftest_i2c_dev_remove,
- .id_table = selftest_i2c_dev_id,
-};
-
-#if IS_ENABLED(CONFIG_I2C_MUX)
-
-struct selftest_i2c_mux_data {
- int nchans;
- struct i2c_adapter *adap[];
-};
-
-static int selftest_i2c_mux_select_chan(struct i2c_adapter *adap,
- void *client, u32 chan)
-{
- return 0;
-}
-
-static int selftest_i2c_mux_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- int ret, i, nchans, size;
- struct device *dev = &client->dev;
- struct i2c_adapter *adap = to_i2c_adapter(dev->parent);
- struct device_node *np = client->dev.of_node, *child;
- struct selftest_i2c_mux_data *stm;
- u32 reg, max_reg;
-
- dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
-
- if (!np) {
- dev_err(dev, "No OF node\n");
- return -EINVAL;
- }
-
- max_reg = (u32)-1;
- for_each_child_of_node(np, child) {
- ret = of_property_read_u32(child, "reg", ®);
- if (ret)
- continue;
- if (max_reg == (u32)-1 || reg > max_reg)
- max_reg = reg;
- }
- nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
- if (nchans == 0) {
- dev_err(dev, "No channels\n");
- return -EINVAL;
- }
-
- size = offsetof(struct selftest_i2c_mux_data, adap[nchans]);
- stm = devm_kzalloc(dev, size, GFP_KERNEL);
- if (!stm) {
- dev_err(dev, "Out of memory\n");
- return -ENOMEM;
- }
- stm->nchans = nchans;
- for (i = 0; i < nchans; i++) {
- stm->adap[i] = i2c_add_mux_adapter(adap, dev, client,
- 0, i, 0, selftest_i2c_mux_select_chan, NULL);
- if (!stm->adap[i]) {
- dev_err(dev, "Failed to register mux #%d\n", i);
- for (i--; i >= 0; i--)
- i2c_del_mux_adapter(stm->adap[i]);
- return -ENODEV;
- }
- }
-
- i2c_set_clientdata(client, stm);
-
- return 0;
-};
-
-static int selftest_i2c_mux_remove(struct i2c_client *client)
-{
- struct device *dev = &client->dev;
- struct device_node *np = client->dev.of_node;
- struct selftest_i2c_mux_data *stm = i2c_get_clientdata(client);
- int i;
-
- dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
- for (i = stm->nchans - 1; i >= 0; i--)
- i2c_del_mux_adapter(stm->adap[i]);
- return 0;
-}
-
-static const struct i2c_device_id selftest_i2c_mux_id[] = {
- { .name = "selftest-i2c-mux" },
- { }
-};
-
-static struct i2c_driver selftest_i2c_mux_driver = {
- .driver = {
- .name = "selftest-i2c-mux",
- .owner = THIS_MODULE,
- },
- .probe = selftest_i2c_mux_probe,
- .remove = selftest_i2c_mux_remove,
- .id_table = selftest_i2c_mux_id,
-};
-
-#endif
-
-static int of_selftest_overlay_i2c_init(void)
-{
- int ret;
-
- ret = i2c_add_driver(&selftest_i2c_dev_driver);
- if (selftest(ret == 0,
- "could not register selftest i2c device driver\n"))
- return ret;
-
- ret = platform_driver_register(&selftest_i2c_bus_driver);
- if (selftest(ret == 0,
- "could not register selftest i2c bus driver\n"))
- return ret;
-
-#if IS_ENABLED(CONFIG_I2C_MUX)
- ret = i2c_add_driver(&selftest_i2c_mux_driver);
- if (selftest(ret == 0,
- "could not register selftest i2c mux driver\n"))
- return ret;
-#endif
-
- return 0;
-}
-
-static void of_selftest_overlay_i2c_cleanup(void)
-{
-#if IS_ENABLED(CONFIG_I2C_MUX)
- i2c_del_driver(&selftest_i2c_mux_driver);
-#endif
- platform_driver_unregister(&selftest_i2c_bus_driver);
- i2c_del_driver(&selftest_i2c_dev_driver);
-}
-
-static void of_selftest_overlay_i2c_12(void)
-{
- int ret;
-
- /* device should enable */
- ret = of_selftest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
- if (ret != 0)
- return;
-
- selftest(1, "overlay test %d passed\n", 12);
-}
-
-/* test deactivation of device */
-static void of_selftest_overlay_i2c_13(void)
-{
- int ret;
-
- /* device should disable */
- ret = of_selftest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
- if (ret != 0)
- return;
-
- selftest(1, "overlay test %d passed\n", 13);
-}
-
-/* just check for i2c mux existence */
-static void of_selftest_overlay_i2c_14(void)
-{
-}
-
-static void of_selftest_overlay_i2c_15(void)
-{
- int ret;
-
- /* device should enable */
- ret = of_selftest_apply_overlay_check(16, 15, 0, 1, I2C_OVERLAY);
- if (ret != 0)
- return;
-
- selftest(1, "overlay test %d passed\n", 15);
-}
-
-#else
-
-static inline void of_selftest_overlay_i2c_14(void) { }
-static inline void of_selftest_overlay_i2c_15(void) { }
-
-#endif
-
-static void __init of_selftest_overlay(void)
-{
- struct device_node *bus_np = NULL;
- int ret;
-
- ret = platform_driver_register(&selftest_driver);
- if (ret != 0) {
- selftest(0, "could not register selftest driver\n");
- goto out;
- }
-
- bus_np = of_find_node_by_path(bus_path);
- if (bus_np == NULL) {
- selftest(0, "could not find bus_path \"%s\"\n", bus_path);
- goto out;
- }
-
- ret = of_platform_populate(bus_np, of_default_bus_match_table,
- NULL, NULL);
- if (ret != 0) {
- selftest(0, "could not populate bus @ \"%s\"\n", bus_path);
- goto out;
- }
-
- if (!of_selftest_device_exists(100, PDEV_OVERLAY)) {
- selftest(0, "could not find selftest0 @ \"%s\"\n",
- selftest_path(100, PDEV_OVERLAY));
- goto out;
- }
-
- if (of_selftest_device_exists(101, PDEV_OVERLAY)) {
- selftest(0, "selftest1 @ \"%s\" should not exist\n",
- selftest_path(101, PDEV_OVERLAY));
- goto out;
- }
-
- selftest(1, "basic infrastructure of overlays passed");
-
- /* tests in sequence */
- of_selftest_overlay_0();
- of_selftest_overlay_1();
- of_selftest_overlay_2();
- of_selftest_overlay_3();
- of_selftest_overlay_4();
- of_selftest_overlay_5();
- of_selftest_overlay_6();
- of_selftest_overlay_8();
-
- of_selftest_overlay_10();
- of_selftest_overlay_11();
-
-#if IS_ENABLED(CONFIG_I2C)
- if (selftest(of_selftest_overlay_i2c_init() == 0, "i2c init failed\n"))
- goto out;
-
- of_selftest_overlay_i2c_12();
- of_selftest_overlay_i2c_13();
- of_selftest_overlay_i2c_14();
- of_selftest_overlay_i2c_15();
-
- of_selftest_overlay_i2c_cleanup();
-#endif
-
-out:
- of_node_put(bus_np);
-}
-
-#else
-static inline void __init of_selftest_overlay(void) { }
-#endif
-
-static int __init of_selftest(void)
-{
- struct device_node *np;
- int res;
-
- /* adding data for selftest */
- res = selftest_data_add();
- if (res)
- return res;
- if (!of_aliases)
- of_aliases = of_find_node_by_path("/aliases");
-
- np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
- if (!np) {
- pr_info("No testcase data in device tree; not running tests\n");
- return 0;
- }
- of_node_put(np);
-
- pr_info("start of selftest - you will see error messages\n");
- of_selftest_check_tree_linkage();
- of_selftest_check_phandles();
- of_selftest_find_node_by_name();
- of_selftest_dynamic();
- of_selftest_parse_phandle_with_args();
- of_selftest_property_string();
- of_selftest_property_copy();
- of_selftest_changeset();
- of_selftest_parse_interrupts();
- of_selftest_parse_interrupts_extended();
- of_selftest_match_node();
- of_selftest_platform_populate();
- of_selftest_overlay();
-
- /* Double check linkage after removing testcase data */
- of_selftest_check_tree_linkage();
-
- pr_info("end of selftest - %i passed, %i failed\n",
- selftest_results.passed, selftest_results.failed);
-
- return 0;
-}
-late_initcall(of_selftest);
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [Patch 2/3] dt: OF_UNITTEST make dependency broken, move unittest.c
2015-03-12 5:35 ` Frank Rowand
(?)
@ 2015-03-13 13:06 ` Rob Herring
-1 siblings, 0 replies; 5+ messages in thread
From: Rob Herring @ 2015-03-13 13:06 UTC (permalink / raw)
To: Frank Rowand
Cc: Grant Likely, Rob Herring, Michal Marek, Linux Kernel list,
devicetree@vger.kernel.org, linux-kbuild
On Thu, Mar 12, 2015 at 12:35 AM, Frank Rowand <frowand.list@gmail.com> wrote:
> From: Frank Rowand <frank.rowand@sonymobile.com>
>
> Move of_unittest.c into unittest-data/
>
> This is based on v4.0-rc3.
>
> All checkpatch errors are ignored, as this is just a file move. At least
> two of the checkpatch errors appear to be real bugs, to be addressed in
> a future patch.
>
> Signed-off-by: Frank Rowand <frank.rowand@sonymobile.com>
>
> ---
> drivers/of/unittest-data/unittest.c | 1879 ++++++++++++++++++++++++++++++++++++
> drivers/of/unittest.c | 1879 ------------------------------------
> 2 files changed, 1879 insertions(+), 1879 deletions(-)
>
> Index: b/drivers/of/unittest-data/unittest.c
> ===================================================================
> --- /dev/null
> +++ b/drivers/of/unittest-data/unittest.c
> @@ -0,0 +1,1879 @@
> +/*
> + * Self tests for device tree subsystem
> + */
> +
> +#define pr_fmt(fmt) "### dt-test ### " fmt
> +
> +#include <linux/clk.h>
> +#include <linux/err.h>
> +#include <linux/errno.h>
> +#include <linux/hashtable.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_fdt.h>
> +#include <linux/of_irq.h>
> +#include <linux/of_platform.h>
> +#include <linux/list.h>
> +#include <linux/mutex.h>
> +#include <linux/slab.h>
> +#include <linux/device.h>
> +#include <linux/platform_device.h>
> +#include <linux/of_platform.h>
> +
> +#include <linux/i2c.h>
> +#include <linux/i2c-mux.h>
> +
> +#include "of_private.h"
> +
> +static struct selftest_results {
> + int passed;
> + int failed;
> +} selftest_results;
> +
> +#define selftest(result, fmt, ...) ({ \
> + bool failed = !(result); \
> + if (failed) { \
> + selftest_results.failed++; \
> + pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
> + } else { \
> + selftest_results.passed++; \
> + pr_debug("pass %s():%i\n", __func__, __LINE__); \
> + } \
> + failed; \
> +})
> +
> +static void __init of_selftest_find_node_by_name(void)
> +{
> + struct device_node *np;
> + const char *options;
> +
> + 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);
> +
> + np = of_find_node_opts_by_path("/testcase-data:testoption", &options);
> + selftest(np && !strcmp("testoption", options),
> + "option path test failed\n");
> + of_node_put(np);
> +
> + np = of_find_node_opts_by_path("/testcase-data:testoption", NULL);
> + selftest(np, "NULL option path test failed\n");
> + of_node_put(np);
> +
> + np = of_find_node_opts_by_path("testcase-alias:testaliasoption",
> + &options);
> + selftest(np && !strcmp("testaliasoption", options),
> + "option alias path test failed\n");
> + of_node_put(np);
> +
> + np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL);
> + selftest(np, "NULL option alias path test failed\n");
> + of_node_put(np);
> +
> + options = "testoption";
> + np = of_find_node_opts_by_path("testcase-alias", &options);
> + selftest(np && !options, "option clearing test failed\n");
> + of_node_put(np);
> +
> + options = "testoption";
> + np = of_find_node_opts_by_path("/", &options);
> + selftest(np && !options, "option clearing root node test failed\n");
> + of_node_put(np);
> +}
> +
> +static void __init of_selftest_dynamic(void)
> +{
> + struct device_node *np;
> + struct property *prop;
> +
> + np = of_find_node_by_path("/testcase-data");
> + if (!np) {
> + pr_err("missing testcase data\n");
> + return;
> + }
> +
> + /* Array of 4 properties for the purpose of testing */
> + prop = kzalloc(sizeof(*prop) * 4, GFP_KERNEL);
> + if (!prop) {
> + selftest(0, "kzalloc() failed\n");
> + return;
> + }
> +
> + /* Add a new property - should pass*/
> + prop->name = "new-property";
> + prop->value = "new-property-data";
> + prop->length = strlen(prop->value);
> + selftest(of_add_property(np, prop) == 0, "Adding a new property failed\n");
> +
> + /* Try to add an existing property - should fail */
> + prop++;
> + prop->name = "new-property";
> + prop->value = "new-property-data-should-fail";
> + prop->length = strlen(prop->value);
> + selftest(of_add_property(np, prop) != 0,
> + "Adding an existing property should have failed\n");
> +
> + /* Try to modify an existing property - should pass */
> + prop->value = "modify-property-data-should-pass";
> + prop->length = strlen(prop->value);
> + selftest(of_update_property(np, prop) == 0,
> + "Updating an existing property should have passed\n");
> +
> + /* Try to modify non-existent property - should pass*/
> + prop++;
> + prop->name = "modify-property";
> + prop->value = "modify-missing-property-data-should-pass";
> + prop->length = strlen(prop->value);
> + selftest(of_update_property(np, prop) == 0,
> + "Updating a missing property should have passed\n");
> +
> + /* Remove property - should pass */
> + selftest(of_remove_property(np, prop) == 0,
> + "Removing a property should have passed\n");
> +
> + /* Adding very large property - should pass */
> + prop++;
> + prop->name = "large-property-PAGE_SIZEx8";
> + prop->length = PAGE_SIZE * 8;
> + prop->value = kzalloc(prop->length, GFP_KERNEL);
> + selftest(prop->value != NULL, "Unable to allocate large buffer\n");
> + if (prop->value)
> + selftest(of_add_property(np, prop) == 0,
> + "Adding a large property should have passed\n");
> +}
> +
> +static int __init of_selftest_check_node_linkage(struct device_node *np)
> +{
> + struct device_node *child;
> + int count = 0, rc;
> +
> + for_each_child_of_node(np, child) {
> + if (child->parent != np) {
> + pr_err("Child node %s links to wrong parent %s\n",
> + child->name, np->name);
> + return -EINVAL;
> + }
> +
> + rc = of_selftest_check_node_linkage(child);
> + if (rc < 0)
> + return rc;
> + count += rc;
> + }
> +
> + return count + 1;
> +}
> +
> +static void __init of_selftest_check_tree_linkage(void)
> +{
> + struct device_node *np;
> + int allnode_count = 0, child_count;
> +
> + if (!of_root)
> + return;
> +
> + for_each_of_allnodes(np)
> + allnode_count++;
> + child_count = of_selftest_check_node_linkage(of_root);
> +
> + selftest(child_count > 0, "Device node data structure is corrupted\n");
> + selftest(child_count == allnode_count, "allnodes list size (%i) doesn't match"
> + "sibling lists size (%i)\n", allnode_count, child_count);
> + pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count);
> +}
> +
> +struct node_hash {
> + struct hlist_node node;
> + struct device_node *np;
> +};
> +
> +static DEFINE_HASHTABLE(phandle_ht, 8);
> +static void __init of_selftest_check_phandles(void)
> +{
> + struct device_node *np;
> + struct node_hash *nh;
> + struct hlist_node *tmp;
> + int i, dup_count = 0, phandle_count = 0;
> +
> + for_each_of_allnodes(np) {
> + if (!np->phandle)
> + continue;
> +
> + hash_for_each_possible(phandle_ht, nh, node, np->phandle) {
> + if (nh->np->phandle == np->phandle) {
> + pr_info("Duplicate phandle! %i used by %s and %s\n",
> + np->phandle, nh->np->full_name, np->full_name);
> + dup_count++;
> + break;
> + }
> + }
> +
> + nh = kzalloc(sizeof(*nh), GFP_KERNEL);
> + if (WARN_ON(!nh))
> + return;
> +
> + nh->np = np;
> + hash_add(phandle_ht, &nh->node, np->phandle);
> + phandle_count++;
> + }
> + selftest(dup_count == 0, "Found %i duplicates in %i phandles\n",
> + dup_count, phandle_count);
> +
> + /* Clean up */
> + hash_for_each_safe(phandle_ht, i, tmp, nh, node) {
> + hash_del(&nh->node);
> + kfree(nh);
> + }
> +}
> +
> +static void __init of_selftest_parse_phandle_with_args(void)
> +{
> + struct device_node *np;
> + struct of_phandle_args args;
> + int i, rc;
> +
> + np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
> + if (!np) {
> + pr_err("missing testcase data\n");
> + return;
> + }
> +
> + rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
> + selftest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
> +
> + for (i = 0; i < 8; i++) {
> + bool passed = true;
> + rc = of_parse_phandle_with_args(np, "phandle-list",
> + "#phandle-cells", i, &args);
> +
> + /* Test the values from tests-phandle.dtsi */
> + switch (i) {
> + case 0:
> + passed &= !rc;
> + passed &= (args.args_count == 1);
> + passed &= (args.args[0] == (i + 1));
> + break;
> + case 1:
> + passed &= !rc;
> + passed &= (args.args_count == 2);
> + passed &= (args.args[0] == (i + 1));
> + passed &= (args.args[1] == 0);
> + break;
> + case 2:
> + passed &= (rc == -ENOENT);
> + break;
> + case 3:
> + passed &= !rc;
> + passed &= (args.args_count == 3);
> + passed &= (args.args[0] == (i + 1));
> + passed &= (args.args[1] == 4);
> + passed &= (args.args[2] == 3);
> + break;
> + case 4:
> + passed &= !rc;
> + passed &= (args.args_count == 2);
> + passed &= (args.args[0] == (i + 1));
> + passed &= (args.args[1] == 100);
> + break;
> + case 5:
> + passed &= !rc;
> + passed &= (args.args_count == 0);
> + break;
> + case 6:
> + passed &= !rc;
> + passed &= (args.args_count == 1);
> + passed &= (args.args[0] == (i + 1));
> + break;
> + case 7:
> + passed &= (rc == -ENOENT);
> + break;
> + default:
> + passed = false;
> + }
> +
> + selftest(passed, "index %i - data error on node %s rc=%i\n",
> + i, args.np->full_name, rc);
> + }
> +
> + /* Check for missing list property */
> + rc = of_parse_phandle_with_args(np, "phandle-list-missing",
> + "#phandle-cells", 0, &args);
> + selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
> + rc = of_count_phandle_with_args(np, "phandle-list-missing",
> + "#phandle-cells");
> + selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
> +
> + /* Check for missing cells property */
> + rc = of_parse_phandle_with_args(np, "phandle-list",
> + "#phandle-cells-missing", 0, &args);
> + selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
> + rc = of_count_phandle_with_args(np, "phandle-list",
> + "#phandle-cells-missing");
> + selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
> +
> + /* Check for bad phandle in list */
> + rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
> + "#phandle-cells", 0, &args);
> + selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
> + rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
> + "#phandle-cells");
> + selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
> +
> + /* Check for incorrectly formed argument list */
> + rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
> + "#phandle-cells", 1, &args);
> + selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
> + rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
> + "#phandle-cells");
> + selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
> +}
> +
> +static void __init of_selftest_property_string(void)
> +{
> + const char *strings[4];
> + struct device_node *np;
> + int rc;
> +
> + np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
> + if (!np) {
> + pr_err("No testcase data in device tree\n");
> + return;
> + }
> +
> + rc = of_property_match_string(np, "phandle-list-names", "first");
> + selftest(rc == 0, "first expected:0 got:%i\n", rc);
> + rc = of_property_match_string(np, "phandle-list-names", "second");
> + selftest(rc == 1, "second expected:0 got:%i\n", rc);
> + rc = of_property_match_string(np, "phandle-list-names", "third");
> + selftest(rc == 2, "third expected:0 got:%i\n", rc);
> + rc = of_property_match_string(np, "phandle-list-names", "fourth");
> + selftest(rc == -ENODATA, "unmatched string; rc=%i\n", rc);
> + rc = of_property_match_string(np, "missing-property", "blah");
> + selftest(rc == -EINVAL, "missing property; rc=%i\n", rc);
> + rc = of_property_match_string(np, "empty-property", "blah");
> + selftest(rc == -ENODATA, "empty property; rc=%i\n", rc);
> + rc = of_property_match_string(np, "unterminated-string", "blah");
> + selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
> +
> + /* of_property_count_strings() tests */
> + rc = of_property_count_strings(np, "string-property");
> + selftest(rc == 1, "Incorrect string count; rc=%i\n", rc);
> + rc = of_property_count_strings(np, "phandle-list-names");
> + selftest(rc == 3, "Incorrect string count; rc=%i\n", rc);
> + rc = of_property_count_strings(np, "unterminated-string");
> + selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
> + rc = of_property_count_strings(np, "unterminated-string-list");
> + selftest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
> +
> + /* of_property_read_string_index() tests */
> + rc = of_property_read_string_index(np, "string-property", 0, strings);
> + selftest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc);
> + strings[0] = NULL;
> + rc = of_property_read_string_index(np, "string-property", 1, strings);
> + selftest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
> + rc = of_property_read_string_index(np, "phandle-list-names", 0, strings);
> + selftest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
> + rc = of_property_read_string_index(np, "phandle-list-names", 1, strings);
> + selftest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc);
> + rc = of_property_read_string_index(np, "phandle-list-names", 2, strings);
> + selftest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc);
> + strings[0] = NULL;
> + rc = of_property_read_string_index(np, "phandle-list-names", 3, strings);
> + selftest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
> + strings[0] = NULL;
> + rc = of_property_read_string_index(np, "unterminated-string", 0, strings);
> + selftest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
> + rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings);
> + selftest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
> + strings[0] = NULL;
> + rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */
> + selftest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
> + strings[1] = NULL;
> +
> + /* of_property_read_string_array() tests */
> + rc = of_property_read_string_array(np, "string-property", strings, 4);
> + selftest(rc == 1, "Incorrect string count; rc=%i\n", rc);
> + rc = of_property_read_string_array(np, "phandle-list-names", strings, 4);
> + selftest(rc == 3, "Incorrect string count; rc=%i\n", rc);
> + rc = of_property_read_string_array(np, "unterminated-string", strings, 4);
> + selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
> + /* -- An incorrectly formed string should cause a failure */
> + rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4);
> + selftest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
> + /* -- parsing the correctly formed strings should still work: */
> + strings[2] = NULL;
> + rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2);
> + selftest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc);
> + strings[1] = NULL;
> + rc = of_property_read_string_array(np, "phandle-list-names", strings, 1);
> + selftest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]);
> +}
> +
> +#define propcmp(p1, p2) (((p1)->length == (p2)->length) && \
> + (p1)->value && (p2)->value && \
> + !memcmp((p1)->value, (p2)->value, (p1)->length) && \
> + !strcmp((p1)->name, (p2)->name))
> +static void __init of_selftest_property_copy(void)
> +{
> +#ifdef CONFIG_OF_DYNAMIC
> + struct property p1 = { .name = "p1", .length = 0, .value = "" };
> + struct property p2 = { .name = "p2", .length = 5, .value = "abcd" };
> + struct property *new;
> +
> + new = __of_prop_dup(&p1, GFP_KERNEL);
> + selftest(new && propcmp(&p1, new), "empty property didn't copy correctly\n");
> + kfree(new->value);
> + kfree(new->name);
> + kfree(new);
> +
> + new = __of_prop_dup(&p2, GFP_KERNEL);
> + selftest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n");
> + kfree(new->value);
> + kfree(new->name);
> + kfree(new);
> +#endif
> +}
> +
> +static void __init of_selftest_changeset(void)
> +{
> +#ifdef CONFIG_OF_DYNAMIC
> + struct property *ppadd, padd = { .name = "prop-add", .length = 0, .value = "" };
> + struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" };
> + struct property *ppremove;
> + struct device_node *n1, *n2, *n21, *nremove, *parent, *np;
> + struct of_changeset chgset;
> +
> + of_changeset_init(&chgset);
> + n1 = __of_node_dup(NULL, "/testcase-data/changeset/n1");
> + selftest(n1, "testcase setup failure\n");
> + n2 = __of_node_dup(NULL, "/testcase-data/changeset/n2");
> + selftest(n2, "testcase setup failure\n");
> + n21 = __of_node_dup(NULL, "%s/%s", "/testcase-data/changeset/n2", "n21");
> + selftest(n21, "testcase setup failure %p\n", n21);
> + nremove = of_find_node_by_path("/testcase-data/changeset/node-remove");
> + selftest(nremove, "testcase setup failure\n");
> + ppadd = __of_prop_dup(&padd, GFP_KERNEL);
> + selftest(ppadd, "testcase setup failure\n");
> + ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
> + selftest(ppupdate, "testcase setup failure\n");
> + parent = nremove->parent;
> + n1->parent = parent;
> + n2->parent = parent;
> + n21->parent = n2;
> + n2->child = n21;
> + ppremove = of_find_property(parent, "prop-remove", NULL);
> + selftest(ppremove, "failed to find removal prop");
> +
> + of_changeset_init(&chgset);
> + selftest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n");
> + selftest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n");
> + selftest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n");
> + selftest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n");
> + selftest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop\n");
> + selftest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n");
> + selftest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n");
> + mutex_lock(&of_mutex);
> + selftest(!of_changeset_apply(&chgset), "apply failed\n");
> + mutex_unlock(&of_mutex);
> +
> + /* Make sure node names are constructed correctly */
> + selftest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")),
> + "'%s' not added\n", n21->full_name);
> + of_node_put(np);
> +
> + mutex_lock(&of_mutex);
> + selftest(!of_changeset_revert(&chgset), "revert failed\n");
> + mutex_unlock(&of_mutex);
> +
> + of_changeset_destroy(&chgset);
> +#endif
> +}
> +
> +static void __init of_selftest_parse_interrupts(void)
> +{
> + struct device_node *np;
> + struct of_phandle_args args;
> + int i, rc;
> +
> + np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
> + if (!np) {
> + pr_err("missing testcase data\n");
> + return;
> + }
> +
> + for (i = 0; i < 4; i++) {
> + bool passed = true;
> + args.args_count = 0;
> + rc = of_irq_parse_one(np, i, &args);
> +
> + passed &= !rc;
> + passed &= (args.args_count == 1);
> + passed &= (args.args[0] == (i + 1));
> +
> + selftest(passed, "index %i - data error on node %s rc=%i\n",
> + i, args.np->full_name, rc);
> + }
> + of_node_put(np);
> +
> + np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
> + if (!np) {
> + pr_err("missing testcase data\n");
> + return;
> + }
> +
> + for (i = 0; i < 4; i++) {
> + bool passed = true;
> + args.args_count = 0;
> + rc = of_irq_parse_one(np, i, &args);
> +
> + /* Test the values from tests-phandle.dtsi */
> + switch (i) {
> + case 0:
> + passed &= !rc;
> + passed &= (args.args_count == 1);
> + passed &= (args.args[0] == 9);
> + break;
> + case 1:
> + passed &= !rc;
> + passed &= (args.args_count == 3);
> + passed &= (args.args[0] == 10);
> + passed &= (args.args[1] == 11);
> + passed &= (args.args[2] == 12);
> + break;
> + case 2:
> + passed &= !rc;
> + passed &= (args.args_count == 2);
> + passed &= (args.args[0] == 13);
> + passed &= (args.args[1] == 14);
> + break;
> + case 3:
> + passed &= !rc;
> + passed &= (args.args_count == 2);
> + passed &= (args.args[0] == 15);
> + passed &= (args.args[1] == 16);
> + break;
> + default:
> + passed = false;
> + }
> + selftest(passed, "index %i - data error on node %s rc=%i\n",
> + i, args.np->full_name, rc);
> + }
> + of_node_put(np);
> +}
> +
> +static void __init of_selftest_parse_interrupts_extended(void)
> +{
> + struct device_node *np;
> + struct of_phandle_args args;
> + int i, rc;
> +
> + np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
> + if (!np) {
> + pr_err("missing testcase data\n");
> + return;
> + }
> +
> + for (i = 0; i < 7; i++) {
> + bool passed = true;
> + rc = of_irq_parse_one(np, i, &args);
> +
> + /* Test the values from tests-phandle.dtsi */
> + switch (i) {
> + case 0:
> + passed &= !rc;
> + passed &= (args.args_count == 1);
> + passed &= (args.args[0] == 1);
> + break;
> + case 1:
> + passed &= !rc;
> + passed &= (args.args_count == 3);
> + passed &= (args.args[0] == 2);
> + passed &= (args.args[1] == 3);
> + passed &= (args.args[2] == 4);
> + break;
> + case 2:
> + passed &= !rc;
> + passed &= (args.args_count == 2);
> + passed &= (args.args[0] == 5);
> + passed &= (args.args[1] == 6);
> + break;
> + case 3:
> + passed &= !rc;
> + passed &= (args.args_count == 1);
> + passed &= (args.args[0] == 9);
> + break;
> + case 4:
> + passed &= !rc;
> + passed &= (args.args_count == 3);
> + passed &= (args.args[0] == 10);
> + passed &= (args.args[1] == 11);
> + passed &= (args.args[2] == 12);
> + break;
> + case 5:
> + passed &= !rc;
> + passed &= (args.args_count == 2);
> + passed &= (args.args[0] == 13);
> + passed &= (args.args[1] == 14);
> + break;
> + case 6:
> + passed &= !rc;
> + passed &= (args.args_count == 1);
> + passed &= (args.args[0] == 15);
> + break;
> + default:
> + passed = false;
> + }
> +
> + selftest(passed, "index %i - data error on node %s rc=%i\n",
> + i, args.np->full_name, rc);
> + }
> + of_node_put(np);
> +}
> +
> +static struct of_device_id match_node_table[] = {
> + { .data = "A", .name = "name0", }, /* Name alone is lowest priority */
> + { .data = "B", .type = "type1", }, /* followed by type alone */
> +
> + { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
> + { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
> + { .data = "Cc", .name = "name2", .type = "type2", },
> +
> + { .data = "E", .compatible = "compat3" },
> + { .data = "G", .compatible = "compat2", },
> + { .data = "H", .compatible = "compat2", .name = "name5", },
> + { .data = "I", .compatible = "compat2", .type = "type1", },
> + { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
> + { .data = "K", .compatible = "compat2", .name = "name9", },
> + {}
> +};
> +
> +static struct {
> + const char *path;
> + const char *data;
> +} match_node_tests[] = {
> + { .path = "/testcase-data/match-node/name0", .data = "A", },
> + { .path = "/testcase-data/match-node/name1", .data = "B", },
> + { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
> + { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
> + { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
> + { .path = "/testcase-data/match-node/name3", .data = "E", },
> + { .path = "/testcase-data/match-node/name4", .data = "G", },
> + { .path = "/testcase-data/match-node/name5", .data = "H", },
> + { .path = "/testcase-data/match-node/name6", .data = "G", },
> + { .path = "/testcase-data/match-node/name7", .data = "I", },
> + { .path = "/testcase-data/match-node/name8", .data = "J", },
> + { .path = "/testcase-data/match-node/name9", .data = "K", },
> +};
> +
> +static void __init of_selftest_match_node(void)
> +{
> + struct device_node *np;
> + const struct of_device_id *match;
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
> + np = of_find_node_by_path(match_node_tests[i].path);
> + if (!np) {
> + selftest(0, "missing testcase node %s\n",
> + match_node_tests[i].path);
> + continue;
> + }
> +
> + match = of_match_node(match_node_table, np);
> + if (!match) {
> + selftest(0, "%s didn't match anything\n",
> + match_node_tests[i].path);
> + continue;
> + }
> +
> + if (strcmp(match->data, match_node_tests[i].data) != 0) {
> + selftest(0, "%s got wrong match. expected %s, got %s\n",
> + match_node_tests[i].path, match_node_tests[i].data,
> + (const char *)match->data);
> + continue;
> + }
> + selftest(1, "passed");
> + }
> +}
> +
> +struct device test_bus = {
> + .init_name = "unittest-bus",
> +};
> +static void __init of_selftest_platform_populate(void)
> +{
> + int irq, rc;
> + struct device_node *np, *child, *grandchild;
> + 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);
> +
> + /* 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);
> + selftest(pdev, "device 1 creation failed\n");
> +
> + irq = platform_get_irq(pdev, 0);
> + 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);
> + selftest(pdev, "device 2 creation failed\n");
> + irq = platform_get_irq(pdev, 0);
> + selftest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq);
> +
> + if (selftest(np = of_find_node_by_path("/testcase-data/platform-tests"),
> + "No testcase data in device tree\n"));
> + return;
> +
> + if (selftest(!(rc = device_register(&test_bus)),
> + "testbus registration failed; rc=%i\n", rc));
> + return;
> +
> + for_each_child_of_node(np, child) {
> + of_platform_populate(child, match, NULL, &test_bus);
> + for_each_child_of_node(child, grandchild)
> + selftest(of_find_device_by_node(grandchild),
> + "Could not create device for node '%s'\n",
> + grandchild->name);
> + }
> +
> + of_platform_depopulate(&test_bus);
> + for_each_child_of_node(np, child) {
> + for_each_child_of_node(child, grandchild)
> + selftest(!of_find_device_by_node(grandchild),
> + "device didn't get destroyed '%s'\n",
> + grandchild->name);
> + }
> +
> + device_unregister(&test_bus);
> + of_node_put(np);
> +}
> +
> +/**
> + * update_node_properties - adds the properties
> + * of np into dup node (present in live tree) and
> + * updates parent of children of np to dup.
> + *
> + * @np: node already present in live tree
> + * @dup: node present in live tree to be updated
> + */
> +static void update_node_properties(struct device_node *np,
> + struct device_node *dup)
> +{
> + struct property *prop;
> + struct device_node *child;
> +
> + for_each_property_of_node(np, prop)
> + of_add_property(dup, prop);
> +
> + for_each_child_of_node(np, child)
> + child->parent = dup;
> +}
> +
> +/**
> + * attach_node_and_children - attaches nodes
> + * and its children to live tree
> + *
> + * @np: Node to attach to live tree
> + */
> +static int attach_node_and_children(struct device_node *np)
> +{
> + struct device_node *next, *dup, *child;
> + unsigned long flags;
> +
> + dup = of_find_node_by_path(np->full_name);
> + if (dup) {
> + update_node_properties(np, dup);
> + return 0;
> + }
> +
> + child = np->child;
> + np->child = NULL;
> +
> + mutex_lock(&of_mutex);
> + raw_spin_lock_irqsave(&devtree_lock, flags);
> + np->sibling = np->parent->child;
> + np->parent->child = np;
> + of_node_clear_flag(np, OF_DETACHED);
> + raw_spin_unlock_irqrestore(&devtree_lock, flags);
> +
> + __of_attach_node_sysfs(np);
> + mutex_unlock(&of_mutex);
> +
> + while (child) {
> + next = child->sibling;
> + attach_node_and_children(child);
> + child = next;
> + }
> +
> + return 0;
> +}
> +
> +/**
> + * selftest_data_add - Reads, copies data from
> + * linked tree and attaches it to the live tree
> + */
> +static int __init selftest_data_add(void)
> +{
> + void *selftest_data;
> + struct device_node *selftest_data_node, *np;
> + extern uint8_t __dtb_testcases_begin[];
> + extern uint8_t __dtb_testcases_end[];
> + const int size = __dtb_testcases_end - __dtb_testcases_begin;
> + int rc;
> +
> + if (!size) {
> + pr_warn("%s: No testcase data to attach; not running tests\n",
> + __func__);
> + return -ENODATA;
> + }
> +
> + /* creating copy */
> + selftest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL);
> +
> + if (!selftest_data) {
> + pr_warn("%s: Failed to allocate memory for selftest_data; "
> + "not running tests\n", __func__);
> + return -ENOMEM;
> + }
> + of_fdt_unflatten_tree(selftest_data, &selftest_data_node);
> + if (!selftest_data_node) {
> + pr_warn("%s: No tree to attach; not running tests\n", __func__);
> + return -ENODATA;
> + }
> + of_node_set_flag(selftest_data_node, OF_DETACHED);
> + rc = of_resolve_phandles(selftest_data_node);
> + if (rc) {
> + pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
> + return -EINVAL;
> + }
> +
> + if (!of_root) {
> + of_root = selftest_data_node;
> + for_each_of_allnodes(np)
> + __of_attach_node_sysfs(np);
> + of_aliases = of_find_node_by_path("/aliases");
> + of_chosen = of_find_node_by_path("/chosen");
> + return 0;
> + }
> +
> + /* attach the sub-tree to live tree */
> + np = selftest_data_node->child;
> + while (np) {
> + struct device_node *next = np->sibling;
> + np->parent = of_root;
> + attach_node_and_children(np);
> + np = next;
> + }
> + return 0;
> +}
> +
> +#ifdef CONFIG_OF_OVERLAY
> +
> +static int selftest_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct device_node *np = dev->of_node;
> +
> + if (np == NULL) {
> + dev_err(dev, "No OF data for device\n");
> + return -EINVAL;
> +
> + }
> +
> + dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
> +
> + of_platform_populate(np, NULL, NULL, &pdev->dev);
> +
> + return 0;
> +}
> +
> +static int selftest_remove(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct device_node *np = dev->of_node;
> +
> + dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
> + return 0;
> +}
> +
> +static struct of_device_id selftest_match[] = {
> + { .compatible = "selftest", },
> + {},
> +};
> +
> +static struct platform_driver selftest_driver = {
> + .probe = selftest_probe,
> + .remove = selftest_remove,
> + .driver = {
> + .name = "selftest",
> + .owner = THIS_MODULE,
> + .of_match_table = of_match_ptr(selftest_match),
> + },
> +};
> +
> +/* get the platform device instantiated at the path */
> +static struct platform_device *of_path_to_platform_device(const char *path)
> +{
> + struct device_node *np;
> + struct platform_device *pdev;
> +
> + np = of_find_node_by_path(path);
> + if (np == NULL)
> + return NULL;
> +
> + pdev = of_find_device_by_node(np);
> + of_node_put(np);
> +
> + return pdev;
> +}
> +
> +/* find out if a platform device exists at that path */
> +static int of_path_platform_device_exists(const char *path)
> +{
> + struct platform_device *pdev;
> +
> + pdev = of_path_to_platform_device(path);
> + platform_device_put(pdev);
> + return pdev != NULL;
> +}
> +
> +#if IS_ENABLED(CONFIG_I2C)
> +
> +/* get the i2c client device instantiated at the path */
> +static struct i2c_client *of_path_to_i2c_client(const char *path)
> +{
> + struct device_node *np;
> + struct i2c_client *client;
> +
> + np = of_find_node_by_path(path);
> + if (np == NULL)
> + return NULL;
> +
> + client = of_find_i2c_device_by_node(np);
> + of_node_put(np);
> +
> + return client;
> +}
> +
> +/* find out if a i2c client device exists at that path */
> +static int of_path_i2c_client_exists(const char *path)
> +{
> + struct i2c_client *client;
> +
> + client = of_path_to_i2c_client(path);
> + if (client)
> + put_device(&client->dev);
> + return client != NULL;
> +}
> +#else
> +static int of_path_i2c_client_exists(const char *path)
> +{
> + return 0;
> +}
> +#endif
> +
> +enum overlay_type {
> + PDEV_OVERLAY,
> + I2C_OVERLAY
> +};
> +
> +static int of_path_device_type_exists(const char *path,
> + enum overlay_type ovtype)
> +{
> + switch (ovtype) {
> + case PDEV_OVERLAY:
> + return of_path_platform_device_exists(path);
> + case I2C_OVERLAY:
> + return of_path_i2c_client_exists(path);
> + }
> + return 0;
> +}
> +
> +static const char *selftest_path(int nr, enum overlay_type ovtype)
> +{
> + const char *base;
> + static char buf[256];
> +
> + switch (ovtype) {
> + case PDEV_OVERLAY:
> + base = "/testcase-data/overlay-node/test-bus";
> + break;
> + case I2C_OVERLAY:
> + base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
> + break;
> + default:
> + buf[0] = '\0';
> + return buf;
> + }
> + snprintf(buf, sizeof(buf) - 1, "%s/test-selftest%d", base, nr);
> + buf[sizeof(buf) - 1] = '\0';
> + return buf;
> +}
> +
> +static int of_selftest_device_exists(int selftest_nr, enum overlay_type ovtype)
> +{
> + const char *path;
> +
> + path = selftest_path(selftest_nr, ovtype);
> +
> + switch (ovtype) {
> + case PDEV_OVERLAY:
> + return of_path_platform_device_exists(path);
> + case I2C_OVERLAY:
> + return of_path_i2c_client_exists(path);
> + }
> + return 0;
> +}
> +
> +static const char *overlay_path(int nr)
> +{
> + static char buf[256];
> +
> + snprintf(buf, sizeof(buf) - 1,
> + "/testcase-data/overlay%d", nr);
> + buf[sizeof(buf) - 1] = '\0';
> +
> + return buf;
> +}
> +
> +static const char *bus_path = "/testcase-data/overlay-node/test-bus";
> +
> +static int of_selftest_apply_overlay(int selftest_nr, int overlay_nr,
> + int *overlay_id)
> +{
> + struct device_node *np = NULL;
> + int ret, id = -1;
> +
> + np = of_find_node_by_path(overlay_path(overlay_nr));
> + if (np == NULL) {
> + selftest(0, "could not find overlay node @\"%s\"\n",
> + overlay_path(overlay_nr));
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + ret = of_overlay_create(np);
> + if (ret < 0) {
> + selftest(0, "could not create overlay from \"%s\"\n",
> + overlay_path(overlay_nr));
> + goto out;
> + }
> + id = ret;
> +
> + ret = 0;
> +
> +out:
> + of_node_put(np);
> +
> + if (overlay_id)
> + *overlay_id = id;
> +
> + return ret;
> +}
> +
> +/* apply an overlay while checking before and after states */
> +static int of_selftest_apply_overlay_check(int overlay_nr, int selftest_nr,
> + int before, int after, enum overlay_type ovtype)
> +{
> + int ret;
> +
> + /* selftest device must not be in before state */
> + if (of_selftest_device_exists(selftest_nr, ovtype) != before) {
> + selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
> + overlay_path(overlay_nr),
> + selftest_path(selftest_nr, ovtype),
> + !before ? "enabled" : "disabled");
> + return -EINVAL;
> + }
> +
> + ret = of_selftest_apply_overlay(overlay_nr, selftest_nr, NULL);
> + if (ret != 0) {
> + /* of_selftest_apply_overlay already called selftest() */
> + return ret;
> + }
> +
> + /* selftest device must be to set to after state */
> + if (of_selftest_device_exists(selftest_nr, ovtype) != after) {
> + selftest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
> + overlay_path(overlay_nr),
> + selftest_path(selftest_nr, ovtype),
> + !after ? "enabled" : "disabled");
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +/* apply an overlay and then revert it while checking before, after states */
> +static int of_selftest_apply_revert_overlay_check(int overlay_nr,
> + int selftest_nr, int before, int after,
> + enum overlay_type ovtype)
> +{
> + int ret, ov_id;
> +
> + /* selftest device must be in before state */
> + if (of_selftest_device_exists(selftest_nr, ovtype) != before) {
> + selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
> + overlay_path(overlay_nr),
> + selftest_path(selftest_nr, ovtype),
> + !before ? "enabled" : "disabled");
> + return -EINVAL;
> + }
> +
> + /* apply the overlay */
> + ret = of_selftest_apply_overlay(overlay_nr, selftest_nr, &ov_id);
> + if (ret != 0) {
> + /* of_selftest_apply_overlay already called selftest() */
> + return ret;
> + }
> +
> + /* selftest device must be in after state */
> + if (of_selftest_device_exists(selftest_nr, ovtype) != after) {
> + selftest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
> + overlay_path(overlay_nr),
> + selftest_path(selftest_nr, ovtype),
> + !after ? "enabled" : "disabled");
> + return -EINVAL;
> + }
> +
> + ret = of_overlay_destroy(ov_id);
> + if (ret != 0) {
> + selftest(0, "overlay @\"%s\" failed to be destroyed @\"%s\"\n",
> + overlay_path(overlay_nr),
> + selftest_path(selftest_nr, ovtype));
> + return ret;
> + }
> +
> + /* selftest device must be again in before state */
> + if (of_selftest_device_exists(selftest_nr, PDEV_OVERLAY) != before) {
> + selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
> + overlay_path(overlay_nr),
> + selftest_path(selftest_nr, ovtype),
> + !before ? "enabled" : "disabled");
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +/* test activation of device */
> +static void of_selftest_overlay_0(void)
> +{
> + int ret;
> +
> + /* device should enable */
> + ret = of_selftest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
> + if (ret != 0)
> + return;
> +
> + selftest(1, "overlay test %d passed\n", 0);
> +}
> +
> +/* test deactivation of device */
> +static void of_selftest_overlay_1(void)
> +{
> + int ret;
> +
> + /* device should disable */
> + ret = of_selftest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
> + if (ret != 0)
> + return;
> +
> + selftest(1, "overlay test %d passed\n", 1);
> +}
> +
> +/* test activation of device */
> +static void of_selftest_overlay_2(void)
> +{
> + int ret;
> +
> + /* device should enable */
> + ret = of_selftest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
> + if (ret != 0)
> + return;
> +
> + selftest(1, "overlay test %d passed\n", 2);
> +}
> +
> +/* test deactivation of device */
> +static void of_selftest_overlay_3(void)
> +{
> + int ret;
> +
> + /* device should disable */
> + ret = of_selftest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
> + if (ret != 0)
> + return;
> +
> + selftest(1, "overlay test %d passed\n", 3);
> +}
> +
> +/* test activation of a full device node */
> +static void of_selftest_overlay_4(void)
> +{
> + int ret;
> +
> + /* device should disable */
> + ret = of_selftest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY);
> + if (ret != 0)
> + return;
> +
> + selftest(1, "overlay test %d passed\n", 4);
> +}
> +
> +/* test overlay apply/revert sequence */
> +static void of_selftest_overlay_5(void)
> +{
> + int ret;
> +
> + /* device should disable */
> + ret = of_selftest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
> + if (ret != 0)
> + return;
> +
> + selftest(1, "overlay test %d passed\n", 5);
> +}
> +
> +/* test overlay application in sequence */
> +static void of_selftest_overlay_6(void)
> +{
> + struct device_node *np;
> + int ret, i, ov_id[2];
> + int overlay_nr = 6, selftest_nr = 6;
> + int before = 0, after = 1;
> +
> + /* selftest device must be in before state */
> + for (i = 0; i < 2; i++) {
> + if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
> + != before) {
> + selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
> + overlay_path(overlay_nr + i),
> + selftest_path(selftest_nr + i,
> + PDEV_OVERLAY),
> + !before ? "enabled" : "disabled");
> + return;
> + }
> + }
> +
> + /* apply the overlays */
> + for (i = 0; i < 2; i++) {
> +
> + np = of_find_node_by_path(overlay_path(overlay_nr + i));
> + if (np == NULL) {
> + selftest(0, "could not find overlay node @\"%s\"\n",
> + overlay_path(overlay_nr + i));
> + return;
> + }
> +
> + ret = of_overlay_create(np);
> + if (ret < 0) {
> + selftest(0, "could not create overlay from \"%s\"\n",
> + overlay_path(overlay_nr + i));
> + return;
> + }
> + ov_id[i] = ret;
> + }
> +
> + for (i = 0; i < 2; i++) {
> + /* selftest device must be in after state */
> + if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
> + != after) {
> + selftest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
> + overlay_path(overlay_nr + i),
> + selftest_path(selftest_nr + i,
> + PDEV_OVERLAY),
> + !after ? "enabled" : "disabled");
> + return;
> + }
> + }
> +
> + for (i = 1; i >= 0; i--) {
> + ret = of_overlay_destroy(ov_id[i]);
> + if (ret != 0) {
> + selftest(0, "overlay @\"%s\" failed destroy @\"%s\"\n",
> + overlay_path(overlay_nr + i),
> + selftest_path(selftest_nr + i,
> + PDEV_OVERLAY));
> + return;
> + }
> + }
> +
> + for (i = 0; i < 2; i++) {
> + /* selftest device must be again in before state */
> + if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
> + != before) {
> + selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
> + overlay_path(overlay_nr + i),
> + selftest_path(selftest_nr + i,
> + PDEV_OVERLAY),
> + !before ? "enabled" : "disabled");
> + return;
> + }
> + }
> +
> + selftest(1, "overlay test %d passed\n", 6);
> +}
> +
> +/* test overlay application in sequence */
> +static void of_selftest_overlay_8(void)
> +{
> + struct device_node *np;
> + int ret, i, ov_id[2];
> + int overlay_nr = 8, selftest_nr = 8;
> +
> + /* we don't care about device state in this test */
> +
> + /* apply the overlays */
> + for (i = 0; i < 2; i++) {
> +
> + np = of_find_node_by_path(overlay_path(overlay_nr + i));
> + if (np == NULL) {
> + selftest(0, "could not find overlay node @\"%s\"\n",
> + overlay_path(overlay_nr + i));
> + return;
> + }
> +
> + ret = of_overlay_create(np);
> + if (ret < 0) {
> + selftest(0, "could not create overlay from \"%s\"\n",
> + overlay_path(overlay_nr + i));
> + return;
> + }
> + ov_id[i] = ret;
> + }
> +
> + /* now try to remove first overlay (it should fail) */
> + ret = of_overlay_destroy(ov_id[0]);
> + if (ret == 0) {
> + selftest(0, "overlay @\"%s\" was destroyed @\"%s\"\n",
> + overlay_path(overlay_nr + 0),
> + selftest_path(selftest_nr,
> + PDEV_OVERLAY));
> + return;
> + }
> +
> + /* removing them in order should work */
> + for (i = 1; i >= 0; i--) {
> + ret = of_overlay_destroy(ov_id[i]);
> + if (ret != 0) {
> + selftest(0, "overlay @\"%s\" not destroyed @\"%s\"\n",
> + overlay_path(overlay_nr + i),
> + selftest_path(selftest_nr,
> + PDEV_OVERLAY));
> + return;
> + }
> + }
> +
> + selftest(1, "overlay test %d passed\n", 8);
> +}
> +
> +/* test insertion of a bus with parent devices */
> +static void of_selftest_overlay_10(void)
> +{
> + int ret;
> + char *child_path;
> +
> + /* device should disable */
> + ret = of_selftest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
> + if (selftest(ret == 0,
> + "overlay test %d failed; overlay application\n", 10))
> + return;
> +
> + child_path = kasprintf(GFP_KERNEL, "%s/test-selftest101",
> + selftest_path(10, PDEV_OVERLAY));
> + if (selftest(child_path, "overlay test %d failed; kasprintf\n", 10))
> + return;
> +
> + ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
> + kfree(child_path);
> + if (selftest(ret, "overlay test %d failed; no child device\n", 10))
> + return;
> +}
> +
> +/* test insertion of a bus with parent devices (and revert) */
> +static void of_selftest_overlay_11(void)
> +{
> + int ret;
> +
> + /* device should disable */
> + ret = of_selftest_apply_revert_overlay_check(11, 11, 0, 1,
> + PDEV_OVERLAY);
> + if (selftest(ret == 0,
> + "overlay test %d failed; overlay application\n", 11))
> + return;
> +}
> +
> +#if IS_ENABLED(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
> +
> +struct selftest_i2c_bus_data {
> + struct platform_device *pdev;
> + struct i2c_adapter adap;
> +};
> +
> +static int selftest_i2c_master_xfer(struct i2c_adapter *adap,
> + struct i2c_msg *msgs, int num)
> +{
> + struct selftest_i2c_bus_data *std = i2c_get_adapdata(adap);
> +
> + (void)std;
> +
> + return num;
> +}
> +
> +static u32 selftest_i2c_functionality(struct i2c_adapter *adap)
> +{
> + return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
> +}
> +
> +static const struct i2c_algorithm selftest_i2c_algo = {
> + .master_xfer = selftest_i2c_master_xfer,
> + .functionality = selftest_i2c_functionality,
> +};
> +
> +static int selftest_i2c_bus_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct device_node *np = dev->of_node;
> + struct selftest_i2c_bus_data *std;
> + struct i2c_adapter *adap;
> + int ret;
> +
> + if (np == NULL) {
> + dev_err(dev, "No OF data for device\n");
> + return -EINVAL;
> +
> + }
> +
> + dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
> +
> + std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
> + if (!std) {
> + dev_err(dev, "Failed to allocate selftest i2c data\n");
> + return -ENOMEM;
> + }
> +
> + /* link them together */
> + std->pdev = pdev;
> + platform_set_drvdata(pdev, std);
> +
> + adap = &std->adap;
> + i2c_set_adapdata(adap, std);
> + adap->nr = -1;
> + strlcpy(adap->name, pdev->name, sizeof(adap->name));
> + adap->class = I2C_CLASS_DEPRECATED;
> + adap->algo = &selftest_i2c_algo;
> + adap->dev.parent = dev;
> + adap->dev.of_node = dev->of_node;
> + adap->timeout = 5 * HZ;
> + adap->retries = 3;
> +
> + ret = i2c_add_numbered_adapter(adap);
> + if (ret != 0) {
> + dev_err(dev, "Failed to add I2C adapter\n");
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int selftest_i2c_bus_remove(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct device_node *np = dev->of_node;
> + struct selftest_i2c_bus_data *std = platform_get_drvdata(pdev);
> +
> + dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
> + i2c_del_adapter(&std->adap);
> +
> + return 0;
> +}
> +
> +static struct of_device_id selftest_i2c_bus_match[] = {
> + { .compatible = "selftest-i2c-bus", },
> + {},
> +};
> +
> +static struct platform_driver selftest_i2c_bus_driver = {
> + .probe = selftest_i2c_bus_probe,
> + .remove = selftest_i2c_bus_remove,
> + .driver = {
> + .name = "selftest-i2c-bus",
> + .of_match_table = of_match_ptr(selftest_i2c_bus_match),
> + },
> +};
> +
> +static int selftest_i2c_dev_probe(struct i2c_client *client,
> + const struct i2c_device_id *id)
> +{
> + struct device *dev = &client->dev;
> + struct device_node *np = client->dev.of_node;
> +
> + if (!np) {
> + dev_err(dev, "No OF node\n");
> + return -EINVAL;
> + }
> +
> + dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
> +
> + return 0;
> +};
> +
> +static int selftest_i2c_dev_remove(struct i2c_client *client)
> +{
> + struct device *dev = &client->dev;
> + struct device_node *np = client->dev.of_node;
> +
> + dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
> + return 0;
> +}
> +
> +static const struct i2c_device_id selftest_i2c_dev_id[] = {
> + { .name = "selftest-i2c-dev" },
> + { }
> +};
> +
> +static struct i2c_driver selftest_i2c_dev_driver = {
> + .driver = {
> + .name = "selftest-i2c-dev",
> + .owner = THIS_MODULE,
> + },
> + .probe = selftest_i2c_dev_probe,
> + .remove = selftest_i2c_dev_remove,
> + .id_table = selftest_i2c_dev_id,
> +};
> +
> +#if IS_ENABLED(CONFIG_I2C_MUX)
> +
> +struct selftest_i2c_mux_data {
> + int nchans;
> + struct i2c_adapter *adap[];
> +};
> +
> +static int selftest_i2c_mux_select_chan(struct i2c_adapter *adap,
> + void *client, u32 chan)
> +{
> + return 0;
> +}
> +
> +static int selftest_i2c_mux_probe(struct i2c_client *client,
> + const struct i2c_device_id *id)
> +{
> + int ret, i, nchans, size;
> + struct device *dev = &client->dev;
> + struct i2c_adapter *adap = to_i2c_adapter(dev->parent);
> + struct device_node *np = client->dev.of_node, *child;
> + struct selftest_i2c_mux_data *stm;
> + u32 reg, max_reg;
> +
> + dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
> +
> + if (!np) {
> + dev_err(dev, "No OF node\n");
> + return -EINVAL;
> + }
> +
> + max_reg = (u32)-1;
> + for_each_child_of_node(np, child) {
> + ret = of_property_read_u32(child, "reg", ®);
> + if (ret)
> + continue;
> + if (max_reg == (u32)-1 || reg > max_reg)
> + max_reg = reg;
> + }
> + nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
> + if (nchans == 0) {
> + dev_err(dev, "No channels\n");
> + return -EINVAL;
> + }
> +
> + size = offsetof(struct selftest_i2c_mux_data, adap[nchans]);
> + stm = devm_kzalloc(dev, size, GFP_KERNEL);
> + if (!stm) {
> + dev_err(dev, "Out of memory\n");
> + return -ENOMEM;
> + }
> + stm->nchans = nchans;
> + for (i = 0; i < nchans; i++) {
> + stm->adap[i] = i2c_add_mux_adapter(adap, dev, client,
> + 0, i, 0, selftest_i2c_mux_select_chan, NULL);
> + if (!stm->adap[i]) {
> + dev_err(dev, "Failed to register mux #%d\n", i);
> + for (i--; i >= 0; i--)
> + i2c_del_mux_adapter(stm->adap[i]);
> + return -ENODEV;
> + }
> + }
> +
> + i2c_set_clientdata(client, stm);
> +
> + return 0;
> +};
> +
> +static int selftest_i2c_mux_remove(struct i2c_client *client)
> +{
> + struct device *dev = &client->dev;
> + struct device_node *np = client->dev.of_node;
> + struct selftest_i2c_mux_data *stm = i2c_get_clientdata(client);
> + int i;
> +
> + dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
> + for (i = stm->nchans - 1; i >= 0; i--)
> + i2c_del_mux_adapter(stm->adap[i]);
> + return 0;
> +}
> +
> +static const struct i2c_device_id selftest_i2c_mux_id[] = {
> + { .name = "selftest-i2c-mux" },
> + { }
> +};
> +
> +static struct i2c_driver selftest_i2c_mux_driver = {
> + .driver = {
> + .name = "selftest-i2c-mux",
> + .owner = THIS_MODULE,
> + },
> + .probe = selftest_i2c_mux_probe,
> + .remove = selftest_i2c_mux_remove,
> + .id_table = selftest_i2c_mux_id,
> +};
> +
> +#endif
> +
> +static int of_selftest_overlay_i2c_init(void)
> +{
> + int ret;
> +
> + ret = i2c_add_driver(&selftest_i2c_dev_driver);
> + if (selftest(ret == 0,
> + "could not register selftest i2c device driver\n"))
> + return ret;
> +
> + ret = platform_driver_register(&selftest_i2c_bus_driver);
> + if (selftest(ret == 0,
> + "could not register selftest i2c bus driver\n"))
> + return ret;
> +
> +#if IS_ENABLED(CONFIG_I2C_MUX)
> + ret = i2c_add_driver(&selftest_i2c_mux_driver);
> + if (selftest(ret == 0,
> + "could not register selftest i2c mux driver\n"))
> + return ret;
> +#endif
> +
> + return 0;
> +}
> +
> +static void of_selftest_overlay_i2c_cleanup(void)
> +{
> +#if IS_ENABLED(CONFIG_I2C_MUX)
> + i2c_del_driver(&selftest_i2c_mux_driver);
> +#endif
> + platform_driver_unregister(&selftest_i2c_bus_driver);
> + i2c_del_driver(&selftest_i2c_dev_driver);
> +}
> +
> +static void of_selftest_overlay_i2c_12(void)
> +{
> + int ret;
> +
> + /* device should enable */
> + ret = of_selftest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
> + if (ret != 0)
> + return;
> +
> + selftest(1, "overlay test %d passed\n", 12);
> +}
> +
> +/* test deactivation of device */
> +static void of_selftest_overlay_i2c_13(void)
> +{
> + int ret;
> +
> + /* device should disable */
> + ret = of_selftest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
> + if (ret != 0)
> + return;
> +
> + selftest(1, "overlay test %d passed\n", 13);
> +}
> +
> +/* just check for i2c mux existence */
> +static void of_selftest_overlay_i2c_14(void)
> +{
> +}
> +
> +static void of_selftest_overlay_i2c_15(void)
> +{
> + int ret;
> +
> + /* device should enable */
> + ret = of_selftest_apply_overlay_check(16, 15, 0, 1, I2C_OVERLAY);
> + if (ret != 0)
> + return;
> +
> + selftest(1, "overlay test %d passed\n", 15);
> +}
> +
> +#else
> +
> +static inline void of_selftest_overlay_i2c_14(void) { }
> +static inline void of_selftest_overlay_i2c_15(void) { }
> +
> +#endif
> +
> +static void __init of_selftest_overlay(void)
> +{
> + struct device_node *bus_np = NULL;
> + int ret;
> +
> + ret = platform_driver_register(&selftest_driver);
> + if (ret != 0) {
> + selftest(0, "could not register selftest driver\n");
> + goto out;
> + }
> +
> + bus_np = of_find_node_by_path(bus_path);
> + if (bus_np == NULL) {
> + selftest(0, "could not find bus_path \"%s\"\n", bus_path);
> + goto out;
> + }
> +
> + ret = of_platform_populate(bus_np, of_default_bus_match_table,
> + NULL, NULL);
> + if (ret != 0) {
> + selftest(0, "could not populate bus @ \"%s\"\n", bus_path);
> + goto out;
> + }
> +
> + if (!of_selftest_device_exists(100, PDEV_OVERLAY)) {
> + selftest(0, "could not find selftest0 @ \"%s\"\n",
> + selftest_path(100, PDEV_OVERLAY));
> + goto out;
> + }
> +
> + if (of_selftest_device_exists(101, PDEV_OVERLAY)) {
> + selftest(0, "selftest1 @ \"%s\" should not exist\n",
> + selftest_path(101, PDEV_OVERLAY));
> + goto out;
> + }
> +
> + selftest(1, "basic infrastructure of overlays passed");
> +
> + /* tests in sequence */
> + of_selftest_overlay_0();
> + of_selftest_overlay_1();
> + of_selftest_overlay_2();
> + of_selftest_overlay_3();
> + of_selftest_overlay_4();
> + of_selftest_overlay_5();
> + of_selftest_overlay_6();
> + of_selftest_overlay_8();
> +
> + of_selftest_overlay_10();
> + of_selftest_overlay_11();
> +
> +#if IS_ENABLED(CONFIG_I2C)
> + if (selftest(of_selftest_overlay_i2c_init() == 0, "i2c init failed\n"))
> + goto out;
> +
> + of_selftest_overlay_i2c_12();
> + of_selftest_overlay_i2c_13();
> + of_selftest_overlay_i2c_14();
> + of_selftest_overlay_i2c_15();
> +
> + of_selftest_overlay_i2c_cleanup();
> +#endif
> +
> +out:
> + of_node_put(bus_np);
> +}
> +
> +#else
> +static inline void __init of_selftest_overlay(void) { }
> +#endif
> +
> +static int __init of_selftest(void)
> +{
> + struct device_node *np;
> + int res;
> +
> + /* adding data for selftest */
> + res = selftest_data_add();
> + if (res)
> + return res;
> + if (!of_aliases)
> + of_aliases = of_find_node_by_path("/aliases");
> +
> + np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
> + if (!np) {
> + pr_info("No testcase data in device tree; not running tests\n");
> + return 0;
> + }
> + of_node_put(np);
> +
> + pr_info("start of selftest - you will see error messages\n");
> + of_selftest_check_tree_linkage();
> + of_selftest_check_phandles();
> + of_selftest_find_node_by_name();
> + of_selftest_dynamic();
> + of_selftest_parse_phandle_with_args();
> + of_selftest_property_string();
> + of_selftest_property_copy();
> + of_selftest_changeset();
> + of_selftest_parse_interrupts();
> + of_selftest_parse_interrupts_extended();
> + of_selftest_match_node();
> + of_selftest_platform_populate();
> + of_selftest_overlay();
> +
> + /* Double check linkage after removing testcase data */
> + of_selftest_check_tree_linkage();
> +
> + pr_info("end of selftest - %i passed, %i failed\n",
> + selftest_results.passed, selftest_results.failed);
> +
> + return 0;
> +}
> +late_initcall(of_selftest);
> Index: b/drivers/of/unittest.c
> ===================================================================
> --- a/drivers/of/unittest.c
> +++ /dev/null
> @@ -1,1879 +0,0 @@
> -/*
> - * Self tests for device tree subsystem
> - */
> -
> -#define pr_fmt(fmt) "### dt-test ### " fmt
> -
> -#include <linux/clk.h>
> -#include <linux/err.h>
> -#include <linux/errno.h>
> -#include <linux/hashtable.h>
> -#include <linux/module.h>
> -#include <linux/of.h>
> -#include <linux/of_fdt.h>
> -#include <linux/of_irq.h>
> -#include <linux/of_platform.h>
> -#include <linux/list.h>
> -#include <linux/mutex.h>
> -#include <linux/slab.h>
> -#include <linux/device.h>
> -#include <linux/platform_device.h>
> -#include <linux/of_platform.h>
> -
> -#include <linux/i2c.h>
> -#include <linux/i2c-mux.h>
> -
> -#include "of_private.h"
> -
> -static struct selftest_results {
> - int passed;
> - int failed;
> -} selftest_results;
> -
> -#define selftest(result, fmt, ...) ({ \
> - bool failed = !(result); \
> - if (failed) { \
> - selftest_results.failed++; \
> - pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
> - } else { \
> - selftest_results.passed++; \
> - pr_debug("pass %s():%i\n", __func__, __LINE__); \
> - } \
> - failed; \
> -})
> -
> -static void __init of_selftest_find_node_by_name(void)
> -{
> - struct device_node *np;
> - const char *options;
> -
> - 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);
> -
> - np = of_find_node_opts_by_path("/testcase-data:testoption", &options);
> - selftest(np && !strcmp("testoption", options),
> - "option path test failed\n");
> - of_node_put(np);
> -
> - np = of_find_node_opts_by_path("/testcase-data:testoption", NULL);
> - selftest(np, "NULL option path test failed\n");
> - of_node_put(np);
> -
> - np = of_find_node_opts_by_path("testcase-alias:testaliasoption",
> - &options);
> - selftest(np && !strcmp("testaliasoption", options),
> - "option alias path test failed\n");
> - of_node_put(np);
> -
> - np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL);
> - selftest(np, "NULL option alias path test failed\n");
> - of_node_put(np);
> -
> - options = "testoption";
> - np = of_find_node_opts_by_path("testcase-alias", &options);
> - selftest(np && !options, "option clearing test failed\n");
> - of_node_put(np);
> -
> - options = "testoption";
> - np = of_find_node_opts_by_path("/", &options);
> - selftest(np && !options, "option clearing root node test failed\n");
> - of_node_put(np);
> -}
> -
> -static void __init of_selftest_dynamic(void)
> -{
> - struct device_node *np;
> - struct property *prop;
> -
> - np = of_find_node_by_path("/testcase-data");
> - if (!np) {
> - pr_err("missing testcase data\n");
> - return;
> - }
> -
> - /* Array of 4 properties for the purpose of testing */
> - prop = kzalloc(sizeof(*prop) * 4, GFP_KERNEL);
> - if (!prop) {
> - selftest(0, "kzalloc() failed\n");
> - return;
> - }
> -
> - /* Add a new property - should pass*/
> - prop->name = "new-property";
> - prop->value = "new-property-data";
> - prop->length = strlen(prop->value);
> - selftest(of_add_property(np, prop) == 0, "Adding a new property failed\n");
> -
> - /* Try to add an existing property - should fail */
> - prop++;
> - prop->name = "new-property";
> - prop->value = "new-property-data-should-fail";
> - prop->length = strlen(prop->value);
> - selftest(of_add_property(np, prop) != 0,
> - "Adding an existing property should have failed\n");
> -
> - /* Try to modify an existing property - should pass */
> - prop->value = "modify-property-data-should-pass";
> - prop->length = strlen(prop->value);
> - selftest(of_update_property(np, prop) == 0,
> - "Updating an existing property should have passed\n");
> -
> - /* Try to modify non-existent property - should pass*/
> - prop++;
> - prop->name = "modify-property";
> - prop->value = "modify-missing-property-data-should-pass";
> - prop->length = strlen(prop->value);
> - selftest(of_update_property(np, prop) == 0,
> - "Updating a missing property should have passed\n");
> -
> - /* Remove property - should pass */
> - selftest(of_remove_property(np, prop) == 0,
> - "Removing a property should have passed\n");
> -
> - /* Adding very large property - should pass */
> - prop++;
> - prop->name = "large-property-PAGE_SIZEx8";
> - prop->length = PAGE_SIZE * 8;
> - prop->value = kzalloc(prop->length, GFP_KERNEL);
> - selftest(prop->value != NULL, "Unable to allocate large buffer\n");
> - if (prop->value)
> - selftest(of_add_property(np, prop) == 0,
> - "Adding a large property should have passed\n");
> -}
> -
> -static int __init of_selftest_check_node_linkage(struct device_node *np)
> -{
> - struct device_node *child;
> - int count = 0, rc;
> -
> - for_each_child_of_node(np, child) {
> - if (child->parent != np) {
> - pr_err("Child node %s links to wrong parent %s\n",
> - child->name, np->name);
> - return -EINVAL;
> - }
> -
> - rc = of_selftest_check_node_linkage(child);
> - if (rc < 0)
> - return rc;
> - count += rc;
> - }
> -
> - return count + 1;
> -}
> -
> -static void __init of_selftest_check_tree_linkage(void)
> -{
> - struct device_node *np;
> - int allnode_count = 0, child_count;
> -
> - if (!of_root)
> - return;
> -
> - for_each_of_allnodes(np)
> - allnode_count++;
> - child_count = of_selftest_check_node_linkage(of_root);
> -
> - selftest(child_count > 0, "Device node data structure is corrupted\n");
> - selftest(child_count == allnode_count, "allnodes list size (%i) doesn't match"
> - "sibling lists size (%i)\n", allnode_count, child_count);
> - pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count);
> -}
> -
> -struct node_hash {
> - struct hlist_node node;
> - struct device_node *np;
> -};
> -
> -static DEFINE_HASHTABLE(phandle_ht, 8);
> -static void __init of_selftest_check_phandles(void)
> -{
> - struct device_node *np;
> - struct node_hash *nh;
> - struct hlist_node *tmp;
> - int i, dup_count = 0, phandle_count = 0;
> -
> - for_each_of_allnodes(np) {
> - if (!np->phandle)
> - continue;
> -
> - hash_for_each_possible(phandle_ht, nh, node, np->phandle) {
> - if (nh->np->phandle == np->phandle) {
> - pr_info("Duplicate phandle! %i used by %s and %s\n",
> - np->phandle, nh->np->full_name, np->full_name);
> - dup_count++;
> - break;
> - }
> - }
> -
> - nh = kzalloc(sizeof(*nh), GFP_KERNEL);
> - if (WARN_ON(!nh))
> - return;
> -
> - nh->np = np;
> - hash_add(phandle_ht, &nh->node, np->phandle);
> - phandle_count++;
> - }
> - selftest(dup_count == 0, "Found %i duplicates in %i phandles\n",
> - dup_count, phandle_count);
> -
> - /* Clean up */
> - hash_for_each_safe(phandle_ht, i, tmp, nh, node) {
> - hash_del(&nh->node);
> - kfree(nh);
> - }
> -}
> -
> -static void __init of_selftest_parse_phandle_with_args(void)
> -{
> - struct device_node *np;
> - struct of_phandle_args args;
> - int i, rc;
> -
> - np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
> - if (!np) {
> - pr_err("missing testcase data\n");
> - return;
> - }
> -
> - rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
> - selftest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
> -
> - for (i = 0; i < 8; i++) {
> - bool passed = true;
> - rc = of_parse_phandle_with_args(np, "phandle-list",
> - "#phandle-cells", i, &args);
> -
> - /* Test the values from tests-phandle.dtsi */
> - switch (i) {
> - case 0:
> - passed &= !rc;
> - passed &= (args.args_count == 1);
> - passed &= (args.args[0] == (i + 1));
> - break;
> - case 1:
> - passed &= !rc;
> - passed &= (args.args_count == 2);
> - passed &= (args.args[0] == (i + 1));
> - passed &= (args.args[1] == 0);
> - break;
> - case 2:
> - passed &= (rc == -ENOENT);
> - break;
> - case 3:
> - passed &= !rc;
> - passed &= (args.args_count == 3);
> - passed &= (args.args[0] == (i + 1));
> - passed &= (args.args[1] == 4);
> - passed &= (args.args[2] == 3);
> - break;
> - case 4:
> - passed &= !rc;
> - passed &= (args.args_count == 2);
> - passed &= (args.args[0] == (i + 1));
> - passed &= (args.args[1] == 100);
> - break;
> - case 5:
> - passed &= !rc;
> - passed &= (args.args_count == 0);
> - break;
> - case 6:
> - passed &= !rc;
> - passed &= (args.args_count == 1);
> - passed &= (args.args[0] == (i + 1));
> - break;
> - case 7:
> - passed &= (rc == -ENOENT);
> - break;
> - default:
> - passed = false;
> - }
> -
> - selftest(passed, "index %i - data error on node %s rc=%i\n",
> - i, args.np->full_name, rc);
> - }
> -
> - /* Check for missing list property */
> - rc = of_parse_phandle_with_args(np, "phandle-list-missing",
> - "#phandle-cells", 0, &args);
> - selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
> - rc = of_count_phandle_with_args(np, "phandle-list-missing",
> - "#phandle-cells");
> - selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
> -
> - /* Check for missing cells property */
> - rc = of_parse_phandle_with_args(np, "phandle-list",
> - "#phandle-cells-missing", 0, &args);
> - selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
> - rc = of_count_phandle_with_args(np, "phandle-list",
> - "#phandle-cells-missing");
> - selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
> -
> - /* Check for bad phandle in list */
> - rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
> - "#phandle-cells", 0, &args);
> - selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
> - rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
> - "#phandle-cells");
> - selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
> -
> - /* Check for incorrectly formed argument list */
> - rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
> - "#phandle-cells", 1, &args);
> - selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
> - rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
> - "#phandle-cells");
> - selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
> -}
> -
> -static void __init of_selftest_property_string(void)
> -{
> - const char *strings[4];
> - struct device_node *np;
> - int rc;
> -
> - np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
> - if (!np) {
> - pr_err("No testcase data in device tree\n");
> - return;
> - }
> -
> - rc = of_property_match_string(np, "phandle-list-names", "first");
> - selftest(rc == 0, "first expected:0 got:%i\n", rc);
> - rc = of_property_match_string(np, "phandle-list-names", "second");
> - selftest(rc == 1, "second expected:0 got:%i\n", rc);
> - rc = of_property_match_string(np, "phandle-list-names", "third");
> - selftest(rc == 2, "third expected:0 got:%i\n", rc);
> - rc = of_property_match_string(np, "phandle-list-names", "fourth");
> - selftest(rc == -ENODATA, "unmatched string; rc=%i\n", rc);
> - rc = of_property_match_string(np, "missing-property", "blah");
> - selftest(rc == -EINVAL, "missing property; rc=%i\n", rc);
> - rc = of_property_match_string(np, "empty-property", "blah");
> - selftest(rc == -ENODATA, "empty property; rc=%i\n", rc);
> - rc = of_property_match_string(np, "unterminated-string", "blah");
> - selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
> -
> - /* of_property_count_strings() tests */
> - rc = of_property_count_strings(np, "string-property");
> - selftest(rc == 1, "Incorrect string count; rc=%i\n", rc);
> - rc = of_property_count_strings(np, "phandle-list-names");
> - selftest(rc == 3, "Incorrect string count; rc=%i\n", rc);
> - rc = of_property_count_strings(np, "unterminated-string");
> - selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
> - rc = of_property_count_strings(np, "unterminated-string-list");
> - selftest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
> -
> - /* of_property_read_string_index() tests */
> - rc = of_property_read_string_index(np, "string-property", 0, strings);
> - selftest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc);
> - strings[0] = NULL;
> - rc = of_property_read_string_index(np, "string-property", 1, strings);
> - selftest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
> - rc = of_property_read_string_index(np, "phandle-list-names", 0, strings);
> - selftest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
> - rc = of_property_read_string_index(np, "phandle-list-names", 1, strings);
> - selftest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc);
> - rc = of_property_read_string_index(np, "phandle-list-names", 2, strings);
> - selftest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc);
> - strings[0] = NULL;
> - rc = of_property_read_string_index(np, "phandle-list-names", 3, strings);
> - selftest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
> - strings[0] = NULL;
> - rc = of_property_read_string_index(np, "unterminated-string", 0, strings);
> - selftest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
> - rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings);
> - selftest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
> - strings[0] = NULL;
> - rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */
> - selftest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
> - strings[1] = NULL;
> -
> - /* of_property_read_string_array() tests */
> - rc = of_property_read_string_array(np, "string-property", strings, 4);
> - selftest(rc == 1, "Incorrect string count; rc=%i\n", rc);
> - rc = of_property_read_string_array(np, "phandle-list-names", strings, 4);
> - selftest(rc == 3, "Incorrect string count; rc=%i\n", rc);
> - rc = of_property_read_string_array(np, "unterminated-string", strings, 4);
> - selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
> - /* -- An incorrectly formed string should cause a failure */
> - rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4);
> - selftest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
> - /* -- parsing the correctly formed strings should still work: */
> - strings[2] = NULL;
> - rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2);
> - selftest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc);
> - strings[1] = NULL;
> - rc = of_property_read_string_array(np, "phandle-list-names", strings, 1);
> - selftest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]);
> -}
> -
> -#define propcmp(p1, p2) (((p1)->length == (p2)->length) && \
> - (p1)->value && (p2)->value && \
> - !memcmp((p1)->value, (p2)->value, (p1)->length) && \
> - !strcmp((p1)->name, (p2)->name))
> -static void __init of_selftest_property_copy(void)
> -{
> -#ifdef CONFIG_OF_DYNAMIC
> - struct property p1 = { .name = "p1", .length = 0, .value = "" };
> - struct property p2 = { .name = "p2", .length = 5, .value = "abcd" };
> - struct property *new;
> -
> - new = __of_prop_dup(&p1, GFP_KERNEL);
> - selftest(new && propcmp(&p1, new), "empty property didn't copy correctly\n");
> - kfree(new->value);
> - kfree(new->name);
> - kfree(new);
> -
> - new = __of_prop_dup(&p2, GFP_KERNEL);
> - selftest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n");
> - kfree(new->value);
> - kfree(new->name);
> - kfree(new);
> -#endif
> -}
> -
> -static void __init of_selftest_changeset(void)
> -{
> -#ifdef CONFIG_OF_DYNAMIC
> - struct property *ppadd, padd = { .name = "prop-add", .length = 0, .value = "" };
> - struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" };
> - struct property *ppremove;
> - struct device_node *n1, *n2, *n21, *nremove, *parent, *np;
> - struct of_changeset chgset;
> -
> - of_changeset_init(&chgset);
> - n1 = __of_node_dup(NULL, "/testcase-data/changeset/n1");
> - selftest(n1, "testcase setup failure\n");
> - n2 = __of_node_dup(NULL, "/testcase-data/changeset/n2");
> - selftest(n2, "testcase setup failure\n");
> - n21 = __of_node_dup(NULL, "%s/%s", "/testcase-data/changeset/n2", "n21");
> - selftest(n21, "testcase setup failure %p\n", n21);
> - nremove = of_find_node_by_path("/testcase-data/changeset/node-remove");
> - selftest(nremove, "testcase setup failure\n");
> - ppadd = __of_prop_dup(&padd, GFP_KERNEL);
> - selftest(ppadd, "testcase setup failure\n");
> - ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
> - selftest(ppupdate, "testcase setup failure\n");
> - parent = nremove->parent;
> - n1->parent = parent;
> - n2->parent = parent;
> - n21->parent = n2;
> - n2->child = n21;
> - ppremove = of_find_property(parent, "prop-remove", NULL);
> - selftest(ppremove, "failed to find removal prop");
> -
> - of_changeset_init(&chgset);
> - selftest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n");
> - selftest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n");
> - selftest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n");
> - selftest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n");
> - selftest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop\n");
> - selftest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n");
> - selftest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n");
> - mutex_lock(&of_mutex);
> - selftest(!of_changeset_apply(&chgset), "apply failed\n");
> - mutex_unlock(&of_mutex);
> -
> - /* Make sure node names are constructed correctly */
> - selftest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")),
> - "'%s' not added\n", n21->full_name);
> - of_node_put(np);
> -
> - mutex_lock(&of_mutex);
> - selftest(!of_changeset_revert(&chgset), "revert failed\n");
> - mutex_unlock(&of_mutex);
> -
> - of_changeset_destroy(&chgset);
> -#endif
> -}
> -
> -static void __init of_selftest_parse_interrupts(void)
> -{
> - struct device_node *np;
> - struct of_phandle_args args;
> - int i, rc;
> -
> - np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
> - if (!np) {
> - pr_err("missing testcase data\n");
> - return;
> - }
> -
> - for (i = 0; i < 4; i++) {
> - bool passed = true;
> - args.args_count = 0;
> - rc = of_irq_parse_one(np, i, &args);
> -
> - passed &= !rc;
> - passed &= (args.args_count == 1);
> - passed &= (args.args[0] == (i + 1));
> -
> - selftest(passed, "index %i - data error on node %s rc=%i\n",
> - i, args.np->full_name, rc);
> - }
> - of_node_put(np);
> -
> - np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
> - if (!np) {
> - pr_err("missing testcase data\n");
> - return;
> - }
> -
> - for (i = 0; i < 4; i++) {
> - bool passed = true;
> - args.args_count = 0;
> - rc = of_irq_parse_one(np, i, &args);
> -
> - /* Test the values from tests-phandle.dtsi */
> - switch (i) {
> - case 0:
> - passed &= !rc;
> - passed &= (args.args_count == 1);
> - passed &= (args.args[0] == 9);
> - break;
> - case 1:
> - passed &= !rc;
> - passed &= (args.args_count == 3);
> - passed &= (args.args[0] == 10);
> - passed &= (args.args[1] == 11);
> - passed &= (args.args[2] == 12);
> - break;
> - case 2:
> - passed &= !rc;
> - passed &= (args.args_count == 2);
> - passed &= (args.args[0] == 13);
> - passed &= (args.args[1] == 14);
> - break;
> - case 3:
> - passed &= !rc;
> - passed &= (args.args_count == 2);
> - passed &= (args.args[0] == 15);
> - passed &= (args.args[1] == 16);
> - break;
> - default:
> - passed = false;
> - }
> - selftest(passed, "index %i - data error on node %s rc=%i\n",
> - i, args.np->full_name, rc);
> - }
> - of_node_put(np);
> -}
> -
> -static void __init of_selftest_parse_interrupts_extended(void)
> -{
> - struct device_node *np;
> - struct of_phandle_args args;
> - int i, rc;
> -
> - np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
> - if (!np) {
> - pr_err("missing testcase data\n");
> - return;
> - }
> -
> - for (i = 0; i < 7; i++) {
> - bool passed = true;
> - rc = of_irq_parse_one(np, i, &args);
> -
> - /* Test the values from tests-phandle.dtsi */
> - switch (i) {
> - case 0:
> - passed &= !rc;
> - passed &= (args.args_count == 1);
> - passed &= (args.args[0] == 1);
> - break;
> - case 1:
> - passed &= !rc;
> - passed &= (args.args_count == 3);
> - passed &= (args.args[0] == 2);
> - passed &= (args.args[1] == 3);
> - passed &= (args.args[2] == 4);
> - break;
> - case 2:
> - passed &= !rc;
> - passed &= (args.args_count == 2);
> - passed &= (args.args[0] == 5);
> - passed &= (args.args[1] == 6);
> - break;
> - case 3:
> - passed &= !rc;
> - passed &= (args.args_count == 1);
> - passed &= (args.args[0] == 9);
> - break;
> - case 4:
> - passed &= !rc;
> - passed &= (args.args_count == 3);
> - passed &= (args.args[0] == 10);
> - passed &= (args.args[1] == 11);
> - passed &= (args.args[2] == 12);
> - break;
> - case 5:
> - passed &= !rc;
> - passed &= (args.args_count == 2);
> - passed &= (args.args[0] == 13);
> - passed &= (args.args[1] == 14);
> - break;
> - case 6:
> - passed &= !rc;
> - passed &= (args.args_count == 1);
> - passed &= (args.args[0] == 15);
> - break;
> - default:
> - passed = false;
> - }
> -
> - selftest(passed, "index %i - data error on node %s rc=%i\n",
> - i, args.np->full_name, rc);
> - }
> - of_node_put(np);
> -}
> -
> -static struct of_device_id match_node_table[] = {
> - { .data = "A", .name = "name0", }, /* Name alone is lowest priority */
> - { .data = "B", .type = "type1", }, /* followed by type alone */
> -
> - { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
> - { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
> - { .data = "Cc", .name = "name2", .type = "type2", },
> -
> - { .data = "E", .compatible = "compat3" },
> - { .data = "G", .compatible = "compat2", },
> - { .data = "H", .compatible = "compat2", .name = "name5", },
> - { .data = "I", .compatible = "compat2", .type = "type1", },
> - { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
> - { .data = "K", .compatible = "compat2", .name = "name9", },
> - {}
> -};
> -
> -static struct {
> - const char *path;
> - const char *data;
> -} match_node_tests[] = {
> - { .path = "/testcase-data/match-node/name0", .data = "A", },
> - { .path = "/testcase-data/match-node/name1", .data = "B", },
> - { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
> - { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
> - { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
> - { .path = "/testcase-data/match-node/name3", .data = "E", },
> - { .path = "/testcase-data/match-node/name4", .data = "G", },
> - { .path = "/testcase-data/match-node/name5", .data = "H", },
> - { .path = "/testcase-data/match-node/name6", .data = "G", },
> - { .path = "/testcase-data/match-node/name7", .data = "I", },
> - { .path = "/testcase-data/match-node/name8", .data = "J", },
> - { .path = "/testcase-data/match-node/name9", .data = "K", },
> -};
> -
> -static void __init of_selftest_match_node(void)
> -{
> - struct device_node *np;
> - const struct of_device_id *match;
> - int i;
> -
> - for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
> - np = of_find_node_by_path(match_node_tests[i].path);
> - if (!np) {
> - selftest(0, "missing testcase node %s\n",
> - match_node_tests[i].path);
> - continue;
> - }
> -
> - match = of_match_node(match_node_table, np);
> - if (!match) {
> - selftest(0, "%s didn't match anything\n",
> - match_node_tests[i].path);
> - continue;
> - }
> -
> - if (strcmp(match->data, match_node_tests[i].data) != 0) {
> - selftest(0, "%s got wrong match. expected %s, got %s\n",
> - match_node_tests[i].path, match_node_tests[i].data,
> - (const char *)match->data);
> - continue;
> - }
> - selftest(1, "passed");
> - }
> -}
> -
> -struct device test_bus = {
> - .init_name = "unittest-bus",
> -};
> -static void __init of_selftest_platform_populate(void)
> -{
> - int irq, rc;
> - struct device_node *np, *child, *grandchild;
> - 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);
> -
> - /* 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);
> - selftest(pdev, "device 1 creation failed\n");
> -
> - irq = platform_get_irq(pdev, 0);
> - 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);
> - selftest(pdev, "device 2 creation failed\n");
> - irq = platform_get_irq(pdev, 0);
> - selftest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq);
> -
> - if (selftest(np = of_find_node_by_path("/testcase-data/platform-tests"),
> - "No testcase data in device tree\n"));
> - return;
> -
> - if (selftest(!(rc = device_register(&test_bus)),
> - "testbus registration failed; rc=%i\n", rc));
> - return;
> -
> - for_each_child_of_node(np, child) {
> - of_platform_populate(child, match, NULL, &test_bus);
> - for_each_child_of_node(child, grandchild)
> - selftest(of_find_device_by_node(grandchild),
> - "Could not create device for node '%s'\n",
> - grandchild->name);
> - }
> -
> - of_platform_depopulate(&test_bus);
> - for_each_child_of_node(np, child) {
> - for_each_child_of_node(child, grandchild)
> - selftest(!of_find_device_by_node(grandchild),
> - "device didn't get destroyed '%s'\n",
> - grandchild->name);
> - }
> -
> - device_unregister(&test_bus);
> - of_node_put(np);
> -}
> -
> -/**
> - * update_node_properties - adds the properties
> - * of np into dup node (present in live tree) and
> - * updates parent of children of np to dup.
> - *
> - * @np: node already present in live tree
> - * @dup: node present in live tree to be updated
> - */
> -static void update_node_properties(struct device_node *np,
> - struct device_node *dup)
> -{
> - struct property *prop;
> - struct device_node *child;
> -
> - for_each_property_of_node(np, prop)
> - of_add_property(dup, prop);
> -
> - for_each_child_of_node(np, child)
> - child->parent = dup;
> -}
> -
> -/**
> - * attach_node_and_children - attaches nodes
> - * and its children to live tree
> - *
> - * @np: Node to attach to live tree
> - */
> -static int attach_node_and_children(struct device_node *np)
> -{
> - struct device_node *next, *dup, *child;
> - unsigned long flags;
> -
> - dup = of_find_node_by_path(np->full_name);
> - if (dup) {
> - update_node_properties(np, dup);
> - return 0;
> - }
> -
> - child = np->child;
> - np->child = NULL;
> -
> - mutex_lock(&of_mutex);
> - raw_spin_lock_irqsave(&devtree_lock, flags);
> - np->sibling = np->parent->child;
> - np->parent->child = np;
> - of_node_clear_flag(np, OF_DETACHED);
> - raw_spin_unlock_irqrestore(&devtree_lock, flags);
> -
> - __of_attach_node_sysfs(np);
> - mutex_unlock(&of_mutex);
> -
> - while (child) {
> - next = child->sibling;
> - attach_node_and_children(child);
> - child = next;
> - }
> -
> - return 0;
> -}
> -
> -/**
> - * selftest_data_add - Reads, copies data from
> - * linked tree and attaches it to the live tree
> - */
> -static int __init selftest_data_add(void)
> -{
> - void *selftest_data;
> - struct device_node *selftest_data_node, *np;
> - extern uint8_t __dtb_testcases_begin[];
> - extern uint8_t __dtb_testcases_end[];
> - const int size = __dtb_testcases_end - __dtb_testcases_begin;
> - int rc;
> -
> - if (!size) {
> - pr_warn("%s: No testcase data to attach; not running tests\n",
> - __func__);
> - return -ENODATA;
> - }
> -
> - /* creating copy */
> - selftest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL);
> -
> - if (!selftest_data) {
> - pr_warn("%s: Failed to allocate memory for selftest_data; "
> - "not running tests\n", __func__);
> - return -ENOMEM;
> - }
> - of_fdt_unflatten_tree(selftest_data, &selftest_data_node);
> - if (!selftest_data_node) {
> - pr_warn("%s: No tree to attach; not running tests\n", __func__);
> - return -ENODATA;
> - }
> - of_node_set_flag(selftest_data_node, OF_DETACHED);
> - rc = of_resolve_phandles(selftest_data_node);
> - if (rc) {
> - pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
> - return -EINVAL;
> - }
> -
> - if (!of_root) {
> - of_root = selftest_data_node;
> - for_each_of_allnodes(np)
> - __of_attach_node_sysfs(np);
> - of_aliases = of_find_node_by_path("/aliases");
> - of_chosen = of_find_node_by_path("/chosen");
> - return 0;
> - }
> -
> - /* attach the sub-tree to live tree */
> - np = selftest_data_node->child;
> - while (np) {
> - struct device_node *next = np->sibling;
> - np->parent = of_root;
> - attach_node_and_children(np);
> - np = next;
> - }
> - return 0;
> -}
> -
> -#ifdef CONFIG_OF_OVERLAY
> -
> -static int selftest_probe(struct platform_device *pdev)
> -{
> - struct device *dev = &pdev->dev;
> - struct device_node *np = dev->of_node;
> -
> - if (np == NULL) {
> - dev_err(dev, "No OF data for device\n");
> - return -EINVAL;
> -
> - }
> -
> - dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
> -
> - of_platform_populate(np, NULL, NULL, &pdev->dev);
> -
> - return 0;
> -}
> -
> -static int selftest_remove(struct platform_device *pdev)
> -{
> - struct device *dev = &pdev->dev;
> - struct device_node *np = dev->of_node;
> -
> - dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
> - return 0;
> -}
> -
> -static struct of_device_id selftest_match[] = {
> - { .compatible = "selftest", },
> - {},
> -};
> -
> -static struct platform_driver selftest_driver = {
> - .probe = selftest_probe,
> - .remove = selftest_remove,
> - .driver = {
> - .name = "selftest",
> - .owner = THIS_MODULE,
> - .of_match_table = of_match_ptr(selftest_match),
> - },
> -};
> -
> -/* get the platform device instantiated at the path */
> -static struct platform_device *of_path_to_platform_device(const char *path)
> -{
> - struct device_node *np;
> - struct platform_device *pdev;
> -
> - np = of_find_node_by_path(path);
> - if (np == NULL)
> - return NULL;
> -
> - pdev = of_find_device_by_node(np);
> - of_node_put(np);
> -
> - return pdev;
> -}
> -
> -/* find out if a platform device exists at that path */
> -static int of_path_platform_device_exists(const char *path)
> -{
> - struct platform_device *pdev;
> -
> - pdev = of_path_to_platform_device(path);
> - platform_device_put(pdev);
> - return pdev != NULL;
> -}
> -
> -#if IS_ENABLED(CONFIG_I2C)
> -
> -/* get the i2c client device instantiated at the path */
> -static struct i2c_client *of_path_to_i2c_client(const char *path)
> -{
> - struct device_node *np;
> - struct i2c_client *client;
> -
> - np = of_find_node_by_path(path);
> - if (np == NULL)
> - return NULL;
> -
> - client = of_find_i2c_device_by_node(np);
> - of_node_put(np);
> -
> - return client;
> -}
> -
> -/* find out if a i2c client device exists at that path */
> -static int of_path_i2c_client_exists(const char *path)
> -{
> - struct i2c_client *client;
> -
> - client = of_path_to_i2c_client(path);
> - if (client)
> - put_device(&client->dev);
> - return client != NULL;
> -}
> -#else
> -static int of_path_i2c_client_exists(const char *path)
> -{
> - return 0;
> -}
> -#endif
> -
> -enum overlay_type {
> - PDEV_OVERLAY,
> - I2C_OVERLAY
> -};
> -
> -static int of_path_device_type_exists(const char *path,
> - enum overlay_type ovtype)
> -{
> - switch (ovtype) {
> - case PDEV_OVERLAY:
> - return of_path_platform_device_exists(path);
> - case I2C_OVERLAY:
> - return of_path_i2c_client_exists(path);
> - }
> - return 0;
> -}
> -
> -static const char *selftest_path(int nr, enum overlay_type ovtype)
> -{
> - const char *base;
> - static char buf[256];
> -
> - switch (ovtype) {
> - case PDEV_OVERLAY:
> - base = "/testcase-data/overlay-node/test-bus";
> - break;
> - case I2C_OVERLAY:
> - base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
> - break;
> - default:
> - buf[0] = '\0';
> - return buf;
> - }
> - snprintf(buf, sizeof(buf) - 1, "%s/test-selftest%d", base, nr);
> - buf[sizeof(buf) - 1] = '\0';
> - return buf;
> -}
> -
> -static int of_selftest_device_exists(int selftest_nr, enum overlay_type ovtype)
> -{
> - const char *path;
> -
> - path = selftest_path(selftest_nr, ovtype);
> -
> - switch (ovtype) {
> - case PDEV_OVERLAY:
> - return of_path_platform_device_exists(path);
> - case I2C_OVERLAY:
> - return of_path_i2c_client_exists(path);
> - }
> - return 0;
> -}
> -
> -static const char *overlay_path(int nr)
> -{
> - static char buf[256];
> -
> - snprintf(buf, sizeof(buf) - 1,
> - "/testcase-data/overlay%d", nr);
> - buf[sizeof(buf) - 1] = '\0';
> -
> - return buf;
> -}
> -
> -static const char *bus_path = "/testcase-data/overlay-node/test-bus";
> -
> -static int of_selftest_apply_overlay(int selftest_nr, int overlay_nr,
> - int *overlay_id)
> -{
> - struct device_node *np = NULL;
> - int ret, id = -1;
> -
> - np = of_find_node_by_path(overlay_path(overlay_nr));
> - if (np == NULL) {
> - selftest(0, "could not find overlay node @\"%s\"\n",
> - overlay_path(overlay_nr));
> - ret = -EINVAL;
> - goto out;
> - }
> -
> - ret = of_overlay_create(np);
> - if (ret < 0) {
> - selftest(0, "could not create overlay from \"%s\"\n",
> - overlay_path(overlay_nr));
> - goto out;
> - }
> - id = ret;
> -
> - ret = 0;
> -
> -out:
> - of_node_put(np);
> -
> - if (overlay_id)
> - *overlay_id = id;
> -
> - return ret;
> -}
> -
> -/* apply an overlay while checking before and after states */
> -static int of_selftest_apply_overlay_check(int overlay_nr, int selftest_nr,
> - int before, int after, enum overlay_type ovtype)
> -{
> - int ret;
> -
> - /* selftest device must not be in before state */
> - if (of_selftest_device_exists(selftest_nr, ovtype) != before) {
> - selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
> - overlay_path(overlay_nr),
> - selftest_path(selftest_nr, ovtype),
> - !before ? "enabled" : "disabled");
> - return -EINVAL;
> - }
> -
> - ret = of_selftest_apply_overlay(overlay_nr, selftest_nr, NULL);
> - if (ret != 0) {
> - /* of_selftest_apply_overlay already called selftest() */
> - return ret;
> - }
> -
> - /* selftest device must be to set to after state */
> - if (of_selftest_device_exists(selftest_nr, ovtype) != after) {
> - selftest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
> - overlay_path(overlay_nr),
> - selftest_path(selftest_nr, ovtype),
> - !after ? "enabled" : "disabled");
> - return -EINVAL;
> - }
> -
> - return 0;
> -}
> -
> -/* apply an overlay and then revert it while checking before, after states */
> -static int of_selftest_apply_revert_overlay_check(int overlay_nr,
> - int selftest_nr, int before, int after,
> - enum overlay_type ovtype)
> -{
> - int ret, ov_id;
> -
> - /* selftest device must be in before state */
> - if (of_selftest_device_exists(selftest_nr, ovtype) != before) {
> - selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
> - overlay_path(overlay_nr),
> - selftest_path(selftest_nr, ovtype),
> - !before ? "enabled" : "disabled");
> - return -EINVAL;
> - }
> -
> - /* apply the overlay */
> - ret = of_selftest_apply_overlay(overlay_nr, selftest_nr, &ov_id);
> - if (ret != 0) {
> - /* of_selftest_apply_overlay already called selftest() */
> - return ret;
> - }
> -
> - /* selftest device must be in after state */
> - if (of_selftest_device_exists(selftest_nr, ovtype) != after) {
> - selftest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
> - overlay_path(overlay_nr),
> - selftest_path(selftest_nr, ovtype),
> - !after ? "enabled" : "disabled");
> - return -EINVAL;
> - }
> -
> - ret = of_overlay_destroy(ov_id);
> - if (ret != 0) {
> - selftest(0, "overlay @\"%s\" failed to be destroyed @\"%s\"\n",
> - overlay_path(overlay_nr),
> - selftest_path(selftest_nr, ovtype));
> - return ret;
> - }
> -
> - /* selftest device must be again in before state */
> - if (of_selftest_device_exists(selftest_nr, PDEV_OVERLAY) != before) {
> - selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
> - overlay_path(overlay_nr),
> - selftest_path(selftest_nr, ovtype),
> - !before ? "enabled" : "disabled");
> - return -EINVAL;
> - }
> -
> - return 0;
> -}
> -
> -/* test activation of device */
> -static void of_selftest_overlay_0(void)
> -{
> - int ret;
> -
> - /* device should enable */
> - ret = of_selftest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
> - if (ret != 0)
> - return;
> -
> - selftest(1, "overlay test %d passed\n", 0);
> -}
> -
> -/* test deactivation of device */
> -static void of_selftest_overlay_1(void)
> -{
> - int ret;
> -
> - /* device should disable */
> - ret = of_selftest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
> - if (ret != 0)
> - return;
> -
> - selftest(1, "overlay test %d passed\n", 1);
> -}
> -
> -/* test activation of device */
> -static void of_selftest_overlay_2(void)
> -{
> - int ret;
> -
> - /* device should enable */
> - ret = of_selftest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
> - if (ret != 0)
> - return;
> -
> - selftest(1, "overlay test %d passed\n", 2);
> -}
> -
> -/* test deactivation of device */
> -static void of_selftest_overlay_3(void)
> -{
> - int ret;
> -
> - /* device should disable */
> - ret = of_selftest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
> - if (ret != 0)
> - return;
> -
> - selftest(1, "overlay test %d passed\n", 3);
> -}
> -
> -/* test activation of a full device node */
> -static void of_selftest_overlay_4(void)
> -{
> - int ret;
> -
> - /* device should disable */
> - ret = of_selftest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY);
> - if (ret != 0)
> - return;
> -
> - selftest(1, "overlay test %d passed\n", 4);
> -}
> -
> -/* test overlay apply/revert sequence */
> -static void of_selftest_overlay_5(void)
> -{
> - int ret;
> -
> - /* device should disable */
> - ret = of_selftest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
> - if (ret != 0)
> - return;
> -
> - selftest(1, "overlay test %d passed\n", 5);
> -}
> -
> -/* test overlay application in sequence */
> -static void of_selftest_overlay_6(void)
> -{
> - struct device_node *np;
> - int ret, i, ov_id[2];
> - int overlay_nr = 6, selftest_nr = 6;
> - int before = 0, after = 1;
> -
> - /* selftest device must be in before state */
> - for (i = 0; i < 2; i++) {
> - if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
> - != before) {
> - selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
> - overlay_path(overlay_nr + i),
> - selftest_path(selftest_nr + i,
> - PDEV_OVERLAY),
> - !before ? "enabled" : "disabled");
> - return;
> - }
> - }
> -
> - /* apply the overlays */
> - for (i = 0; i < 2; i++) {
> -
> - np = of_find_node_by_path(overlay_path(overlay_nr + i));
> - if (np == NULL) {
> - selftest(0, "could not find overlay node @\"%s\"\n",
> - overlay_path(overlay_nr + i));
> - return;
> - }
> -
> - ret = of_overlay_create(np);
> - if (ret < 0) {
> - selftest(0, "could not create overlay from \"%s\"\n",
> - overlay_path(overlay_nr + i));
> - return;
> - }
> - ov_id[i] = ret;
> - }
> -
> - for (i = 0; i < 2; i++) {
> - /* selftest device must be in after state */
> - if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
> - != after) {
> - selftest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
> - overlay_path(overlay_nr + i),
> - selftest_path(selftest_nr + i,
> - PDEV_OVERLAY),
> - !after ? "enabled" : "disabled");
> - return;
> - }
> - }
> -
> - for (i = 1; i >= 0; i--) {
> - ret = of_overlay_destroy(ov_id[i]);
> - if (ret != 0) {
> - selftest(0, "overlay @\"%s\" failed destroy @\"%s\"\n",
> - overlay_path(overlay_nr + i),
> - selftest_path(selftest_nr + i,
> - PDEV_OVERLAY));
> - return;
> - }
> - }
> -
> - for (i = 0; i < 2; i++) {
> - /* selftest device must be again in before state */
> - if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
> - != before) {
> - selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
> - overlay_path(overlay_nr + i),
> - selftest_path(selftest_nr + i,
> - PDEV_OVERLAY),
> - !before ? "enabled" : "disabled");
> - return;
> - }
> - }
> -
> - selftest(1, "overlay test %d passed\n", 6);
> -}
> -
> -/* test overlay application in sequence */
> -static void of_selftest_overlay_8(void)
> -{
> - struct device_node *np;
> - int ret, i, ov_id[2];
> - int overlay_nr = 8, selftest_nr = 8;
> -
> - /* we don't care about device state in this test */
> -
> - /* apply the overlays */
> - for (i = 0; i < 2; i++) {
> -
> - np = of_find_node_by_path(overlay_path(overlay_nr + i));
> - if (np == NULL) {
> - selftest(0, "could not find overlay node @\"%s\"\n",
> - overlay_path(overlay_nr + i));
> - return;
> - }
> -
> - ret = of_overlay_create(np);
> - if (ret < 0) {
> - selftest(0, "could not create overlay from \"%s\"\n",
> - overlay_path(overlay_nr + i));
> - return;
> - }
> - ov_id[i] = ret;
> - }
> -
> - /* now try to remove first overlay (it should fail) */
> - ret = of_overlay_destroy(ov_id[0]);
> - if (ret == 0) {
> - selftest(0, "overlay @\"%s\" was destroyed @\"%s\"\n",
> - overlay_path(overlay_nr + 0),
> - selftest_path(selftest_nr,
> - PDEV_OVERLAY));
> - return;
> - }
> -
> - /* removing them in order should work */
> - for (i = 1; i >= 0; i--) {
> - ret = of_overlay_destroy(ov_id[i]);
> - if (ret != 0) {
> - selftest(0, "overlay @\"%s\" not destroyed @\"%s\"\n",
> - overlay_path(overlay_nr + i),
> - selftest_path(selftest_nr,
> - PDEV_OVERLAY));
> - return;
> - }
> - }
> -
> - selftest(1, "overlay test %d passed\n", 8);
> -}
> -
> -/* test insertion of a bus with parent devices */
> -static void of_selftest_overlay_10(void)
> -{
> - int ret;
> - char *child_path;
> -
> - /* device should disable */
> - ret = of_selftest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
> - if (selftest(ret == 0,
> - "overlay test %d failed; overlay application\n", 10))
> - return;
> -
> - child_path = kasprintf(GFP_KERNEL, "%s/test-selftest101",
> - selftest_path(10, PDEV_OVERLAY));
> - if (selftest(child_path, "overlay test %d failed; kasprintf\n", 10))
> - return;
> -
> - ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
> - kfree(child_path);
> - if (selftest(ret, "overlay test %d failed; no child device\n", 10))
> - return;
> -}
> -
> -/* test insertion of a bus with parent devices (and revert) */
> -static void of_selftest_overlay_11(void)
> -{
> - int ret;
> -
> - /* device should disable */
> - ret = of_selftest_apply_revert_overlay_check(11, 11, 0, 1,
> - PDEV_OVERLAY);
> - if (selftest(ret == 0,
> - "overlay test %d failed; overlay application\n", 11))
> - return;
> -}
> -
> -#if IS_ENABLED(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
> -
> -struct selftest_i2c_bus_data {
> - struct platform_device *pdev;
> - struct i2c_adapter adap;
> -};
> -
> -static int selftest_i2c_master_xfer(struct i2c_adapter *adap,
> - struct i2c_msg *msgs, int num)
> -{
> - struct selftest_i2c_bus_data *std = i2c_get_adapdata(adap);
> -
> - (void)std;
> -
> - return num;
> -}
> -
> -static u32 selftest_i2c_functionality(struct i2c_adapter *adap)
> -{
> - return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
> -}
> -
> -static const struct i2c_algorithm selftest_i2c_algo = {
> - .master_xfer = selftest_i2c_master_xfer,
> - .functionality = selftest_i2c_functionality,
> -};
> -
> -static int selftest_i2c_bus_probe(struct platform_device *pdev)
> -{
> - struct device *dev = &pdev->dev;
> - struct device_node *np = dev->of_node;
> - struct selftest_i2c_bus_data *std;
> - struct i2c_adapter *adap;
> - int ret;
> -
> - if (np == NULL) {
> - dev_err(dev, "No OF data for device\n");
> - return -EINVAL;
> -
> - }
> -
> - dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
> -
> - std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
> - if (!std) {
> - dev_err(dev, "Failed to allocate selftest i2c data\n");
> - return -ENOMEM;
> - }
> -
> - /* link them together */
> - std->pdev = pdev;
> - platform_set_drvdata(pdev, std);
> -
> - adap = &std->adap;
> - i2c_set_adapdata(adap, std);
> - adap->nr = -1;
> - strlcpy(adap->name, pdev->name, sizeof(adap->name));
> - adap->class = I2C_CLASS_DEPRECATED;
> - adap->algo = &selftest_i2c_algo;
> - adap->dev.parent = dev;
> - adap->dev.of_node = dev->of_node;
> - adap->timeout = 5 * HZ;
> - adap->retries = 3;
> -
> - ret = i2c_add_numbered_adapter(adap);
> - if (ret != 0) {
> - dev_err(dev, "Failed to add I2C adapter\n");
> - return ret;
> - }
> -
> - return 0;
> -}
> -
> -static int selftest_i2c_bus_remove(struct platform_device *pdev)
> -{
> - struct device *dev = &pdev->dev;
> - struct device_node *np = dev->of_node;
> - struct selftest_i2c_bus_data *std = platform_get_drvdata(pdev);
> -
> - dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
> - i2c_del_adapter(&std->adap);
> -
> - return 0;
> -}
> -
> -static struct of_device_id selftest_i2c_bus_match[] = {
> - { .compatible = "selftest-i2c-bus", },
> - {},
> -};
> -
> -static struct platform_driver selftest_i2c_bus_driver = {
> - .probe = selftest_i2c_bus_probe,
> - .remove = selftest_i2c_bus_remove,
> - .driver = {
> - .name = "selftest-i2c-bus",
> - .of_match_table = of_match_ptr(selftest_i2c_bus_match),
> - },
> -};
> -
> -static int selftest_i2c_dev_probe(struct i2c_client *client,
> - const struct i2c_device_id *id)
> -{
> - struct device *dev = &client->dev;
> - struct device_node *np = client->dev.of_node;
> -
> - if (!np) {
> - dev_err(dev, "No OF node\n");
> - return -EINVAL;
> - }
> -
> - dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
> -
> - return 0;
> -};
> -
> -static int selftest_i2c_dev_remove(struct i2c_client *client)
> -{
> - struct device *dev = &client->dev;
> - struct device_node *np = client->dev.of_node;
> -
> - dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
> - return 0;
> -}
> -
> -static const struct i2c_device_id selftest_i2c_dev_id[] = {
> - { .name = "selftest-i2c-dev" },
> - { }
> -};
> -
> -static struct i2c_driver selftest_i2c_dev_driver = {
> - .driver = {
> - .name = "selftest-i2c-dev",
> - .owner = THIS_MODULE,
> - },
> - .probe = selftest_i2c_dev_probe,
> - .remove = selftest_i2c_dev_remove,
> - .id_table = selftest_i2c_dev_id,
> -};
> -
> -#if IS_ENABLED(CONFIG_I2C_MUX)
> -
> -struct selftest_i2c_mux_data {
> - int nchans;
> - struct i2c_adapter *adap[];
> -};
> -
> -static int selftest_i2c_mux_select_chan(struct i2c_adapter *adap,
> - void *client, u32 chan)
> -{
> - return 0;
> -}
> -
> -static int selftest_i2c_mux_probe(struct i2c_client *client,
> - const struct i2c_device_id *id)
> -{
> - int ret, i, nchans, size;
> - struct device *dev = &client->dev;
> - struct i2c_adapter *adap = to_i2c_adapter(dev->parent);
> - struct device_node *np = client->dev.of_node, *child;
> - struct selftest_i2c_mux_data *stm;
> - u32 reg, max_reg;
> -
> - dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
> -
> - if (!np) {
> - dev_err(dev, "No OF node\n");
> - return -EINVAL;
> - }
> -
> - max_reg = (u32)-1;
> - for_each_child_of_node(np, child) {
> - ret = of_property_read_u32(child, "reg", ®);
> - if (ret)
> - continue;
> - if (max_reg == (u32)-1 || reg > max_reg)
> - max_reg = reg;
> - }
> - nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
> - if (nchans == 0) {
> - dev_err(dev, "No channels\n");
> - return -EINVAL;
> - }
> -
> - size = offsetof(struct selftest_i2c_mux_data, adap[nchans]);
> - stm = devm_kzalloc(dev, size, GFP_KERNEL);
> - if (!stm) {
> - dev_err(dev, "Out of memory\n");
> - return -ENOMEM;
> - }
> - stm->nchans = nchans;
> - for (i = 0; i < nchans; i++) {
> - stm->adap[i] = i2c_add_mux_adapter(adap, dev, client,
> - 0, i, 0, selftest_i2c_mux_select_chan, NULL);
> - if (!stm->adap[i]) {
> - dev_err(dev, "Failed to register mux #%d\n", i);
> - for (i--; i >= 0; i--)
> - i2c_del_mux_adapter(stm->adap[i]);
> - return -ENODEV;
> - }
> - }
> -
> - i2c_set_clientdata(client, stm);
> -
> - return 0;
> -};
> -
> -static int selftest_i2c_mux_remove(struct i2c_client *client)
> -{
> - struct device *dev = &client->dev;
> - struct device_node *np = client->dev.of_node;
> - struct selftest_i2c_mux_data *stm = i2c_get_clientdata(client);
> - int i;
> -
> - dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
> - for (i = stm->nchans - 1; i >= 0; i--)
> - i2c_del_mux_adapter(stm->adap[i]);
> - return 0;
> -}
> -
> -static const struct i2c_device_id selftest_i2c_mux_id[] = {
> - { .name = "selftest-i2c-mux" },
> - { }
> -};
> -
> -static struct i2c_driver selftest_i2c_mux_driver = {
> - .driver = {
> - .name = "selftest-i2c-mux",
> - .owner = THIS_MODULE,
> - },
> - .probe = selftest_i2c_mux_probe,
> - .remove = selftest_i2c_mux_remove,
> - .id_table = selftest_i2c_mux_id,
> -};
> -
> -#endif
> -
> -static int of_selftest_overlay_i2c_init(void)
> -{
> - int ret;
> -
> - ret = i2c_add_driver(&selftest_i2c_dev_driver);
> - if (selftest(ret == 0,
> - "could not register selftest i2c device driver\n"))
> - return ret;
> -
> - ret = platform_driver_register(&selftest_i2c_bus_driver);
> - if (selftest(ret == 0,
> - "could not register selftest i2c bus driver\n"))
> - return ret;
> -
> -#if IS_ENABLED(CONFIG_I2C_MUX)
> - ret = i2c_add_driver(&selftest_i2c_mux_driver);
> - if (selftest(ret == 0,
> - "could not register selftest i2c mux driver\n"))
> - return ret;
> -#endif
> -
> - return 0;
> -}
> -
> -static void of_selftest_overlay_i2c_cleanup(void)
> -{
> -#if IS_ENABLED(CONFIG_I2C_MUX)
> - i2c_del_driver(&selftest_i2c_mux_driver);
> -#endif
> - platform_driver_unregister(&selftest_i2c_bus_driver);
> - i2c_del_driver(&selftest_i2c_dev_driver);
> -}
> -
> -static void of_selftest_overlay_i2c_12(void)
> -{
> - int ret;
> -
> - /* device should enable */
> - ret = of_selftest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
> - if (ret != 0)
> - return;
> -
> - selftest(1, "overlay test %d passed\n", 12);
> -}
> -
> -/* test deactivation of device */
> -static void of_selftest_overlay_i2c_13(void)
> -{
> - int ret;
> -
> - /* device should disable */
> - ret = of_selftest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
> - if (ret != 0)
> - return;
> -
> - selftest(1, "overlay test %d passed\n", 13);
> -}
> -
> -/* just check for i2c mux existence */
> -static void of_selftest_overlay_i2c_14(void)
> -{
> -}
> -
> -static void of_selftest_overlay_i2c_15(void)
> -{
> - int ret;
> -
> - /* device should enable */
> - ret = of_selftest_apply_overlay_check(16, 15, 0, 1, I2C_OVERLAY);
> - if (ret != 0)
> - return;
> -
> - selftest(1, "overlay test %d passed\n", 15);
> -}
> -
> -#else
> -
> -static inline void of_selftest_overlay_i2c_14(void) { }
> -static inline void of_selftest_overlay_i2c_15(void) { }
> -
> -#endif
> -
> -static void __init of_selftest_overlay(void)
> -{
> - struct device_node *bus_np = NULL;
> - int ret;
> -
> - ret = platform_driver_register(&selftest_driver);
> - if (ret != 0) {
> - selftest(0, "could not register selftest driver\n");
> - goto out;
> - }
> -
> - bus_np = of_find_node_by_path(bus_path);
> - if (bus_np == NULL) {
> - selftest(0, "could not find bus_path \"%s\"\n", bus_path);
> - goto out;
> - }
> -
> - ret = of_platform_populate(bus_np, of_default_bus_match_table,
> - NULL, NULL);
> - if (ret != 0) {
> - selftest(0, "could not populate bus @ \"%s\"\n", bus_path);
> - goto out;
> - }
> -
> - if (!of_selftest_device_exists(100, PDEV_OVERLAY)) {
> - selftest(0, "could not find selftest0 @ \"%s\"\n",
> - selftest_path(100, PDEV_OVERLAY));
> - goto out;
> - }
> -
> - if (of_selftest_device_exists(101, PDEV_OVERLAY)) {
> - selftest(0, "selftest1 @ \"%s\" should not exist\n",
> - selftest_path(101, PDEV_OVERLAY));
> - goto out;
> - }
> -
> - selftest(1, "basic infrastructure of overlays passed");
> -
> - /* tests in sequence */
> - of_selftest_overlay_0();
> - of_selftest_overlay_1();
> - of_selftest_overlay_2();
> - of_selftest_overlay_3();
> - of_selftest_overlay_4();
> - of_selftest_overlay_5();
> - of_selftest_overlay_6();
> - of_selftest_overlay_8();
> -
> - of_selftest_overlay_10();
> - of_selftest_overlay_11();
> -
> -#if IS_ENABLED(CONFIG_I2C)
> - if (selftest(of_selftest_overlay_i2c_init() == 0, "i2c init failed\n"))
> - goto out;
> -
> - of_selftest_overlay_i2c_12();
> - of_selftest_overlay_i2c_13();
> - of_selftest_overlay_i2c_14();
> - of_selftest_overlay_i2c_15();
> -
> - of_selftest_overlay_i2c_cleanup();
> -#endif
> -
> -out:
> - of_node_put(bus_np);
> -}
> -
> -#else
> -static inline void __init of_selftest_overlay(void) { }
> -#endif
> -
> -static int __init of_selftest(void)
> -{
> - struct device_node *np;
> - int res;
> -
> - /* adding data for selftest */
> - res = selftest_data_add();
> - if (res)
> - return res;
> - if (!of_aliases)
> - of_aliases = of_find_node_by_path("/aliases");
> -
> - np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
> - if (!np) {
> - pr_info("No testcase data in device tree; not running tests\n");
> - return 0;
> - }
> - of_node_put(np);
> -
> - pr_info("start of selftest - you will see error messages\n");
> - of_selftest_check_tree_linkage();
> - of_selftest_check_phandles();
> - of_selftest_find_node_by_name();
> - of_selftest_dynamic();
> - of_selftest_parse_phandle_with_args();
> - of_selftest_property_string();
> - of_selftest_property_copy();
> - of_selftest_changeset();
> - of_selftest_parse_interrupts();
> - of_selftest_parse_interrupts_extended();
> - of_selftest_match_node();
> - of_selftest_platform_populate();
> - of_selftest_overlay();
> -
> - /* Double check linkage after removing testcase data */
> - of_selftest_check_tree_linkage();
> -
> - pr_info("end of selftest - %i passed, %i failed\n",
> - selftest_results.passed, selftest_results.failed);
> -
> - return 0;
> -}
> -late_initcall(of_selftest);
^ permalink raw reply [flat|nested] 5+ messages in thread