This simple test verifies registration and always-on enabling and disabling
work as they should. It may be extended in future to support more
complex cases.
Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
---
v1 -> v2:
- add select on OF_OVERLAY (Sascha)
- reorder regulators, so test succeeds
---
test/self/Kconfig | 7 +-
test/self/Makefile | 1 +
test/self/regulator.c | 188 ++++++++++++++++++++++++++++++++++
test/self/test_regulator.dtso | 43 ++++++++
4 files changed, 238 insertions(+), 1 deletion(-)
create mode 100644 test/self/regulator.c
create mode 100644 test/self/test_regulator.dtso
diff --git a/test/self/Kconfig b/test/self/Kconfig
index dcbfa85896f7..a4176ab8ffd6 100644
--- a/test/self/Kconfig
+++ b/test/self/Kconfig
@@ -38,9 +38,9 @@ config SELFTEST_ENABLE_ALL
imply SELFTEST_JSON
imply SELFTEST_DIGEST
imply SELFTEST_MMU
- imply SELFTEST_REGULATOR
imply SELFTEST_STRING
imply SELFTEST_SETJMP
+ imply SELFTEST_REGULATOR
help
Selects all self-tests compatible with current configuration
@@ -92,4 +92,9 @@ config SELFTEST_SETJMP
bool "setjmp/longjmp library selftest"
depends on ARCH_HAS_SJLJ
+config SELFTEST_REGULATOR
+ bool "Regulator selftest"
+ depends on REGULATOR && OFDEVICE
+ select OF_OVERLAY
+
endif
diff --git a/test/self/Makefile b/test/self/Makefile
index b6f4395147dd..080ef303cc35 100644
--- a/test/self/Makefile
+++ b/test/self/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_SELFTEST_DIGEST) += digest.o
obj-$(CONFIG_SELFTEST_MMU) += mmu.o
obj-$(CONFIG_SELFTEST_STRING) += string.o
obj-$(CONFIG_SELFTEST_SETJMP) += setjmp.o
+obj-$(CONFIG_SELFTEST_REGULATOR) += regulator.o test_regulator.dtbo.o
clean-files := *.dtb *.dtb.S .*.dtc .*.pre .*.dts *.dtb.z
clean-files += *.dtbo *.dtbo.S .*.dtso
diff --git a/test/self/regulator.c b/test/self/regulator.c
new file mode 100644
index 000000000000..e89164700ef1
--- /dev/null
+++ b/test/self/regulator.c
@@ -0,0 +1,188 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <common.h>
+#include <bselftest.h>
+#include <driver.h>
+#include <of.h>
+#include <regulator.h>
+#include <linux/regulator/of_regulator.h>
+
+struct test_regulator {
+ struct device *dev;
+};
+
+struct test_regulator_cfg {
+ struct regulator_desc desc;
+ struct regulator_dev rdev;
+};
+
+BSELFTEST_GLOBALS();
+
+static bool __ok(bool cond, const char *func, int line)
+{
+ total_tests++;
+ if (!cond) {
+ failed_tests++;
+ printf("%s:%d: assertion failure\n", func, line);
+ return false;
+ }
+
+ return true;
+}
+
+#define ok(cond) \
+ __ok(cond, __func__, __LINE__)
+
+static void test_regulator_selfref_always_on(struct device *dev)
+{
+ ok(1 == 1);
+}
+
+static int test_regulator_enable_noop(struct regulator_dev *rdev)
+{
+ dev_dbg(rdev->dev, "enabling %s-supply\n", rdev->desc->supply_name);
+ failed_tests--;
+ return 0;
+}
+
+static int test_regulator_disable_noop(struct regulator_dev *rdev)
+{
+ dev_dbg(rdev->dev, "disabling %s-supply\n", rdev->desc->supply_name);
+ failed_tests--;
+ return 0;
+}
+
+static const struct regulator_ops test_regulator_ops_range = {
+ .enable = test_regulator_enable_noop,
+ .disable = test_regulator_disable_noop,
+};
+
+enum {
+ /*
+ * Ordering LDO1 before TEST_BUCK currently fails. This needs to be fixed
+ */
+ TEST_BUCK,
+ TEST_LDO1,
+ TEST_LDO2,
+ TEST_REGULATORS_NUM
+};
+
+static struct test_regulator_cfg test_pmic_reg[] = {
+ [TEST_BUCK] = {{
+ .supply_name = "buck",
+ .ops = &test_regulator_ops_range,
+ }},
+ [TEST_LDO1] = {{
+ .supply_name = "ldo1",
+ .ops = &test_regulator_ops_range,
+ }},
+ [TEST_LDO2] = {{
+ .supply_name = "ldo2",
+ .ops = &test_regulator_ops_range,
+ }},
+};
+
+static struct of_regulator_match test_reg_matches[] = {
+ [TEST_BUCK] = { .name = "BUCK", .desc = &test_pmic_reg[TEST_BUCK].desc },
+ [TEST_LDO1] = { .name = "LDO1", .desc = &test_pmic_reg[TEST_LDO1].desc },
+ [TEST_LDO2] = { .name = "LDO2", .desc = &test_pmic_reg[TEST_LDO2].desc },
+};
+
+static int test_regulator_register(struct test_regulator *priv, int id,
+ struct of_regulator_match *match,
+ struct test_regulator_cfg *cfg)
+{
+ struct device *dev = priv->dev;
+ int ret;
+
+ if (!match->of_node) {
+ dev_warn(dev, "Skip missing DTB regulator %s\n", match->name);
+ return 0;
+ }
+
+ cfg->rdev.desc = &cfg->desc;
+ cfg->rdev.dev = dev;
+
+ dev_dbg(dev, "registering %s\n", match->name);
+
+ ret = of_regulator_register(&cfg->rdev, match->of_node);
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to register %s regulator\n",
+ match->name);
+
+ return 0;
+}
+
+static int regulator_probe(struct device *dev)
+{
+ size_t nregulators = ARRAY_SIZE(test_pmic_reg);
+ struct device_node *np = dev->of_node;
+ struct test_regulator *priv;
+ int ret, i;
+
+ priv = xzalloc(sizeof(*priv));
+ priv->dev = dev;
+
+ total_tests += 2;
+ failed_tests += 2;
+
+ np = of_get_child_by_name(np, "regulators");
+ if (!np)
+ return -ENOENT;
+
+ ret = of_regulator_match(dev, np, test_reg_matches, nregulators);
+ if (ret < 0)
+ return ret;
+
+ ok(ret == TEST_REGULATORS_NUM);
+
+ for (i = 0; i < nregulators; i++) {
+ ret = test_regulator_register(priv, i, &test_reg_matches[i],
+ &test_pmic_reg[i]);
+ ok(ret == 0);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct of_device_id test_regulator_of_match[] = {
+ { .compatible = "barebox,regulator-self-test" },
+ { /* sentintel */ },
+};
+MODULE_DEVICE_TABLE(of, test_regulator_of_match);
+
+static struct driver regulator_test_driver = {
+ .name = "regulator-test",
+ .probe = regulator_probe,
+ .of_match_table = test_regulator_of_match,
+};
+
+static struct device_d *dev;
+
+static void test_regulator(void)
+{
+ extern char __dtbo_test_regulator_start[];
+ struct device_node *overlay;
+ int ret;
+
+ if (!dev) {
+ ret = platform_driver_register(®ulator_test_driver);
+ if (ret)
+ return;
+
+ overlay = of_unflatten_dtb(__dtbo_test_regulator_start, INT_MAX);
+ of_overlay_apply_tree(of_get_root_node(), overlay);
+ of_probe();
+
+ dev = of_find_device_by_node_path("/regulator-self-test-pmic");
+
+ ok(dev->driver != NULL);
+ }
+
+ test_regulator_selfref_always_on(dev);
+}
+bselftest(core, test_regulator);
diff --git a/test/self/test_regulator.dtso b/test/self/test_regulator.dtso
new file mode 100644
index 000000000000..65d2b130988d
--- /dev/null
+++ b/test/self/test_regulator.dtso
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+ regulator_test_fixed: regulator-self-test-fixed {
+ compatible = "regulator-fixed";
+ regulator-name = "test_fixed";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ regulator-self-test-pmic {
+ compatible = "barebox,regulator-self-test";
+
+ buck-supply = <®ulator_test_fixed>;
+ ldo1-supply = <&test_pmic_buck>;
+ ldo2-supply = <&test_pmic_buck>;
+
+ regulators {
+ test_pmic_buck: BUCK {
+ regulator-name = "buck";
+ regulator-min-microvolt = <330000>;
+ regulator-max-microvolt = <330000>;
+ };
+
+ test_pmic_ldo1: LDO1 {
+ regulator-name = "ldo1";
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <180000>;
+ regulator-max-microvolt = <180000>;
+ };
+
+ test_pmic_ldo2: LDO2 {
+ regulator-name = "ldo2";
+ regulator-min-microvolt = <180000>;
+ regulator-max-microvolt = <180000>;
+ };
+ };
+ };
+};
--
2.39.2
