[nrf fromtree] tests: drivers: regulator: added regulator-boot-off tests

Added tests for new regulator-boot-off property.

Signed-off-by: Andy Sinclair <[email protected]>
(cherry picked from commit b46e2f3)

Author: aasinclair

tests/drivers/regulator/api/app.overlay

@@ -26,5 +26,14 @@
 			regulator-initial-mode = <1>;
 			regulator-active-discharge = <1>;
 		};
+
+		reg4: REG4 {
+			regulator-boot-off;
+		};
+
+		reg5: REG5 {
+			regulator-boot-off;
+			fake-is-enabled-in-hardware;
+		};
 	};
 };

tests/drivers/regulator/api/src/main.c

@@ -19,6 +19,10 @@ static const struct device *const reg1 = DEVICE_DT_GET(DT_NODELABEL(reg1));
 static const struct device *const reg2 = DEVICE_DT_GET(DT_NODELABEL(reg2));
 /* REG3: regulator-max/min-microvolt/microamp, regulator-allowed-modes */
 static const struct device *const reg3 = DEVICE_DT_GET(DT_NODELABEL(reg3));
+/* REG4: regulator-boot-off */
+static const struct device *const reg4 = DEVICE_DT_GET(DT_NODELABEL(reg4));
+/* REG5: regulator-boot-off and is_enabled */
+static const struct device *const reg5 = DEVICE_DT_GET(DT_NODELABEL(reg5));
 
 ZTEST(regulator_api, test_parent_dvs_state_set_not_implemented)
 {
@@ -129,6 +133,10 @@ ZTEST(regulator_api, test_common_config)
 	zassert_equal(config->allowed_modes[1], 10U);
 	zassert_equal(config->allowed_modes_cnt, 2U);
 	zassert_equal(REGULATOR_ACTIVE_DISCHARGE_GET_BITS(config->flags), 1U);
+
+	/* reg4: regulator-boot-off */
+	config = reg4->config;
+	zassert_equal(config->flags & REGULATOR_BOOT_OFF, REGULATOR_BOOT_OFF);
 }
 
 ZTEST(regulator_api, test_common_is_init_enabled)
@@ -137,6 +145,8 @@ ZTEST(regulator_api, test_common_is_init_enabled)
 	zassert_true(regulator_common_is_init_enabled(reg1));
 	zassert_true(regulator_common_is_init_enabled(reg2));
 	zassert_false(regulator_common_is_init_enabled(reg3));
+	zassert_false(regulator_common_is_init_enabled(reg4));
+	zassert_false(regulator_common_is_init_enabled(reg5));
 }
 
 ZTEST(regulator_api, test_enable_disable)
@@ -171,6 +181,16 @@ ZTEST(regulator_api, test_enable_disable)
 	zassert_equal(regulator_disable(reg0), 0);
 	zassert_equal(regulator_fake_disable_fake.arg0_val, reg0);
 	zassert_equal(regulator_fake_disable_fake.call_count, 2U);
+
+	/* REG5: disabled at boot, can be enabled again */
+	zassert_equal(regulator_enable(reg5), 0);
+	zassert_equal(regulator_fake_enable_fake.call_count, 3U);
+
+	/* REG5: disable */
+	zassert_equal(regulator_disable(reg5), 0);
+	zassert_equal(regulator_fake_disable_fake.call_count, 3U);
+
+
 }
 
 ZTEST(regulator_api, test_count_voltages_not_implemented)
@@ -776,6 +796,8 @@ void *setup(void)
 	zassert_true(device_is_ready(reg1));
 	zassert_true(device_is_ready(reg2));
 	zassert_true(device_is_ready(reg3));
+	zassert_true(device_is_ready(reg4));
+	zassert_true(device_is_ready(reg5));
 
 	/* REG1, REG2 initialized at init time (always-on/boot-on) */
 	zassert_equal(regulator_fake_enable_fake.call_count, 2U);
@@ -785,6 +807,13 @@ void *setup(void)
 	/* REG3 mode set at init time (initial-mode) */
 	zassert_equal(regulator_fake_set_mode_fake.call_count, 1U);
 
+	/* REG4 already disabled at init time (boot-off) */
+	zassert_false(regulator_is_enabled(reg4));
+
+	/* REG5 explicitly disabled at init time (boot-off) */
+	zassert_equal(regulator_fake_disable_fake.call_count, 1U);
+	zassert_false(regulator_is_enabled(reg5));
+
 	return NULL;
 }