[04/13] OMAP: Introduce API to return a device list associated with a voltage domain

Commit Message

Thara Gopinath Aug. 18, 2010, 11:20 a.m. UTC

None

Patch

diff --git a/arch/arm/plat-omap/include/plat/opp.h b/arch/arm/plat-omap/include/plat/opp.h
index 0e580ed..a4c1669 100644
--- a/arch/arm/plat-omap/include/plat/opp.h
+++ b/arch/arm/plat-omap/include/plat/opp.h
@@ -18,6 +18,7 @@ 
 #include <linux/cpufreq.h>
 
 #include <plat/common.h>
+#include <plat/voltage.h>
 
 /**
  * struct omap_opp_def - OMAP OPP Definition
@@ -86,6 +87,9 @@  int opp_disable(struct omap_opp *opp);
 
 void opp_init_cpufreq_table(struct device *dev,
 			    struct cpufreq_frequency_table **table);
+
+struct device **opp_init_voltage_params(struct voltagedomain *voltdm,
+					int *dev_count);
 #else
 static inline unsigned long opp_get_voltage(const struct omap_opp *opp)
 {
@@ -149,5 +153,10 @@  void opp_init_cpufreq_table(struct omap_opp *opps,
 {
 }
 
+static inline struct device **opp_init_voltage_params(
+			struct voltagedomain *voltdm, int *dev_count)
+{
+}
+
 #endif		/* CONFIG_PM */
 #endif		/* __ASM_ARM_OMAP_OPP_H */
diff --git a/arch/arm/plat-omap/opp.c b/arch/arm/plat-omap/opp.c
index a3dea82..72dd62a 100644
--- a/arch/arm/plat-omap/opp.c
+++ b/arch/arm/plat-omap/opp.c
@@ -502,3 +502,31 @@  void opp_init_cpufreq_table(struct device *dev,
 
 	*table = &freq_table[0];
 }
+
+struct device **opp_init_voltage_params(struct voltagedomain *voltdm,
+					int *dev_count)
+{
+	struct device_opp *dev_opp;
+	struct device **dev_list;
+	int count = 0, i = 0;
+
+	list_for_each_entry(dev_opp, &dev_opp_list, node) {
+		if (!dev_opp->oh->vdd_name)
+			continue;
+
+		if (!strcmp(dev_opp->oh->vdd_name, voltdm->name)) {
+			dev_opp->oh->voltdm = voltdm;
+			count++;
+		}
+	}
+
+	dev_list = kzalloc(sizeof(struct device *) * count, GFP_KERNEL);
+
+	list_for_each_entry(dev_opp, &dev_opp_list, node) {
+		if (dev_opp->oh->voltdm == voltdm)
+			dev_list[i++] = dev_opp->dev;
+	}
+
+	*dev_count = count;
+	return dev_list;
+}