msm: spm: Add msm_spm_get_vdd API

Add msm_spm_get_vdd() API to return the core active voltage

Change-Id: I423ebbb424fd7ee41bf8283f30168112b78d87ab
Signed-off-by: Praveen Chidambaram <pchidamb@codeaurora.org>
diff --git a/arch/arm/mach-msm/spm_devices.c b/arch/arm/mach-msm/spm_devices.c
index b87b0f1..c7e7b29 100644
--- a/arch/arm/mach-msm/spm_devices.c
+++ b/arch/arm/mach-msm/spm_devices.c
@@ -75,6 +75,15 @@
 }
 EXPORT_SYMBOL(msm_spm_set_vdd);
 
+unsigned int msm_spm_get_vdd(unsigned int cpu)
+{
+	struct msm_spm_device *dev;
+
+	dev = &per_cpu(msm_cpu_spm_device, cpu);
+	return msm_spm_drv_get_sts_curr_pmic_data(&dev->reg_data);
+}
+EXPORT_SYMBOL(msm_spm_get_vdd);
+
 static int msm_spm_dev_set_low_power_mode(struct msm_spm_device *dev,
 		unsigned int mode, bool notify_rpm)
 {