@@ -77,6 +77,7 @@ static struct powerdomain *_pwrdm_lookup(const char *name)
static int _pwrdm_register(struct powerdomain *pwrdm)
{
int i;
+ struct voltagedomain *voltdm;
if (!pwrdm || !pwrdm->name)
return -EINVAL;
@@ -94,6 +95,14 @@ static int _pwrdm_register(struct powerdomain *pwrdm)
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 */
@@ -383,6 +392,18 @@ int pwrdm_for_each_clkdm(struct powerdomain *pwrdm,
}
/**
+ * 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 *
*
@@ -183,6 +183,7 @@ int pwrdm_del_clkdm(struct powerdomain *pwrdm, struct clockdomain *clkdm);
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);
@@ -186,4 +186,5 @@ extern void omap44xx_voltagedomains_init(void);
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
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> --- arch/arm/mach-omap2/powerdomain.c | 21 +++++++++++++++++++++ arch/arm/mach-omap2/powerdomain.h | 1 + arch/arm/mach-omap2/voltage.h | 1 + 3 files changed, 23 insertions(+), 0 deletions(-)