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authorKevin Hilman <khilman@ti.com>2011-03-16 15:52:47 -0700
committerKevin Hilman <khilman@ti.com>2011-09-15 11:39:10 -0700
commit048a7034f1044e69868df70bff32d8d67974e1b8 (patch)
tree0a0de2cfd9d7d5b645c36c2cf6670678842d2e0f
parent7e1b94059cea39218071fdb78c4075b83d52e222 (diff)
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>
-rw-r--r--arch/arm/mach-omap2/powerdomain.c21
-rw-r--r--arch/arm/mach-omap2/powerdomain.h1
-rw-r--r--arch/arm/mach-omap2/voltage.h1
3 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index 896cb4c5eb1a..984457d612b7 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -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;
@@ -91,6 +92,14 @@ 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 */
@@ -427,6 +436,18 @@ 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 *
*
diff --git a/arch/arm/mach-omap2/powerdomain.h b/arch/arm/mach-omap2/powerdomain.h
index 898d4fc0d160..d8a7f914d9b3 100644
--- a/arch/arm/mach-omap2/powerdomain.h
+++ b/arch/arm/mach-omap2/powerdomain.h
@@ -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);
diff --git a/arch/arm/mach-omap2/voltage.h b/arch/arm/mach-omap2/voltage.h
index cacd76e1e2c3..966aa8880345 100644
--- a/arch/arm/mach-omap2/voltage.h
+++ b/arch/arm/mach-omap2/voltage.h
@@ -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