[U-Boot] [PATCH V2 1/4] power-domain: add dummy functions when CONFIG_POWER_DOMAIN not defined

[Peng Fan]

Add dummy functions when CONFIG_POWER_DOMAIN not defined.

Signed-off-by: Peng Fan <peng....@nxp.com>
---

V2: Use CONFIG_IS_ENABLED

 include/power-domain.h | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/include/power-domain.h b/include/power-domain.h
index aba8c0f65c..2029b17c6f 100644
--- a/include/power-domain.h
+++ b/include/power-domain.h
@@ -87,7 +87,14 @@ struct power_domain {
  * @power_domain       A pointer to a power domain struct to initialize.
  * @return 0 if OK, or a negative error code.
  */
+#if CONFIG_IS_ENABLED(POWER_DOMAIN)
 int power_domain_get(struct udevice *dev, struct power_domain *power_domain);
+#else
+int power_domain_get(struct udevice *dev, struct power_domain *power_domain)
+{
+       return -EINVAL;
+}
+#endif
 
 /**
  * power_domain_free - Free a previously requested power domain.
@@ -96,7 +103,14 @@ int power_domain_get(struct udevice *dev, struct 
power_domain *power_domain);
  *             requested by power_domain_get().
  * @return 0 if OK, or a negative error code.
  */
+#if CONFIG_IS_ENABLED(POWER_DOMAIN)
 int power_domain_free(struct power_domain *power_domain);
+#else
+int power_domain_free(struct power_domain *power_domain)
+{
+       return -EINVAL;
+}
+#endif
 
 /**
  * power_domain_on - Enable power to a power domain.
@@ -105,7 +119,14 @@ int power_domain_free(struct power_domain *power_domain);
  *             requested by power_domain_get().
  * @return 0 if OK, or a negative error code.
  */
+#if CONFIG_IS_ENABLED(POWER_DOMAIN)
 int power_domain_on(struct power_domain *power_domain);
+#else
+int power_domain_on(struct power_domain *power_domain)
+{
+       return -EINVAL;
+}
+#endif
 
 /**
  * power_domain_off - Disable power ot a power domain.
@@ -114,6 +135,13 @@ int power_domain_on(struct power_domain *power_domain);
  *             requested by power_domain_get().
  * @return 0 if OK, or a negative error code.
  */
+#if CONFIG_IS_ENABLED(POWER_DOMAIN)
 int power_domain_off(struct power_domain *power_domain);
+#else
+int power_domain_off(struct power_domain *power_domain)
+{
+       return -EINVAL;
+}
+#endif
 
 #endif
-- 
2.14.1

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