OMAP2+: powerdomain: add voltage domain lookup during register
When a powerdomain is registered, lookup the voltage domain by name
and keep a pointer to the containing voltagedomain in the powerdomain
structure.
Modeled after similar method between powerdomain and clockdomain layers.
Signed-off-by: Kevin Hilman <khilman@ti.com>
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index 896cb4c..984457d 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -77,6 +77,7 @@
static int _pwrdm_register(struct powerdomain *pwrdm)
{
int i;
+ struct voltagedomain *voltdm;
if (!pwrdm || !pwrdm->name)
return -EINVAL;
@@ -91,6 +92,14 @@
if (_pwrdm_lookup(pwrdm->name))
return -EEXIST;
+ voltdm = voltdm_lookup(pwrdm->voltdm.name);
+ if (!voltdm) {
+ pr_err("powerdomain: %s: voltagedomain %s does not exist\n",
+ pwrdm->name, pwrdm->voltdm.name);
+ return -EINVAL;
+ }
+ pwrdm->voltdm.ptr = voltdm;
+
list_add(&pwrdm->node, &pwrdm_list);
/* Initialize the powerdomain's state counter */
@@ -427,6 +436,18 @@
}
/**
+ * pwrdm_get_voltdm - return a ptr to the voltdm that this pwrdm resides in
+ * @pwrdm: struct powerdomain *
+ *
+ * Return a pointer to the struct voltageomain that the specified powerdomain
+ * @pwrdm exists in.
+ */
+struct voltagedomain *pwrdm_get_voltdm(struct powerdomain *pwrdm)
+{
+ return pwrdm->voltdm.ptr;
+}
+
+/**
* pwrdm_get_mem_bank_count - get number of memory banks in this powerdomain
* @pwrdm: struct powerdomain *
*
diff --git a/arch/arm/mach-omap2/powerdomain.h b/arch/arm/mach-omap2/powerdomain.h
index 898d4fc..d8a7f91 100644
--- a/arch/arm/mach-omap2/powerdomain.h
+++ b/arch/arm/mach-omap2/powerdomain.h
@@ -183,6 +183,7 @@
int pwrdm_for_each_clkdm(struct powerdomain *pwrdm,
int (*fn)(struct powerdomain *pwrdm,
struct clockdomain *clkdm));
+struct voltagedomain *pwrdm_get_voltdm(struct powerdomain *pwrdm);
int pwrdm_get_mem_bank_count(struct powerdomain *pwrdm);
diff --git a/arch/arm/mach-omap2/voltage.h b/arch/arm/mach-omap2/voltage.h
index cacd76e..966aa88 100644
--- a/arch/arm/mach-omap2/voltage.h
+++ b/arch/arm/mach-omap2/voltage.h
@@ -186,4 +186,5 @@
struct voltagedomain *voltdm_lookup(const char *name);
void voltdm_init(struct voltagedomain **voltdm_list);
+int voltdm_add_pwrdm(struct voltagedomain *voltdm, struct powerdomain *pwrdm);
#endif