power: domain: add dev_power_domain_on

Add this new API to power on multiple domains attached
to a device.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Changed to static inline and added a condition into C file:
Signed-off-by: Simon Glass <sjg@chromium.org>
Change-Id: I84c8dbedc89d557a47bb3f16f3e2116163434e46

diff --git a/drivers/power/domain/power-domain-uclass.c b/drivers/power/domain/power-domain-uclass.c
index 2ea0ff2..c961436 100644 (file)
--- a/drivers/power/domain/power-domain-uclass.c
+++ b/drivers/power/domain/power-domain-uclass.c
@@ -107,6 +107,27 @@ int power_domain_off(struct power_domain *power_domain)
        return ops->off(power_domain);
 }
 
+#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+int dev_power_domain_on(struct udevice *dev)
+{
+       struct power_domain pd;
+       int i, count, ret;
+
+       count = dev_count_phandle_with_args(dev, "power-domains",
+                                           "#power-domain-cells");
+       for (i = 0; i < count; i++) {
+               ret = power_domain_get_by_index(dev, &pd, i);
+               if (ret)
+                       return ret;
+               ret = power_domain_on(&pd);
+               if (ret)
+                       return ret;
+       }
+
+       return 0;
+}
+#endif
+
 UCLASS_DRIVER(power_domain) = {
        .id             = UCLASS_POWER_DOMAIN,
        .name           = "power_domain",

diff --git a/include/power-domain.h b/include/power-domain.h
index ef15dc9..490fedb 100644 (file)
--- a/include/power-domain.h
+++ b/include/power-domain.h
@@ -155,4 +155,21 @@ static inline int power_domain_off(struct power_domain *power_domain)
 }
 #endif
 
+/**
+ * dev_power_domain_on - Enable power domains for a device .
+ *
+ * @dev:               The client device.
+ *
+ * @return 0 if OK, or a negative error code.
+ */
+#if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) && \
+       CONFIG_IS_ENABLED(POWER_DOMAIN)
+int dev_power_domain_on(struct udevice *dev);
+#else
+static inline int dev_power_domain_on(struct udevice *dev)
+{
+       return 0;
+}
+#endif
+
 #endif