msm: kgsl: Report correct GPU frequency in sysfs

Change-Id: I1aac90d0554b9de0511ffb78042177a5a23855ce
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Signed-off-by: PainKiller3 <ninadpatil100@gmail.com>
Signed-off-by: MadeOfGreat <ravenklawasd@gmail.com>
Signed-off-by: CloudedQuartz <ravenklawasd@gmail.com>
Signed-off-by: baalajimaestro <me@baalajimaestro.me>

drivers/gpu/msm/kgsl_pwrctrl.c

@@ -922,13 +922,20 @@ static ssize_t kgsl_pwrctrl_gpuclk_show(struct device *dev,
 				    struct device_attribute *attr,
 				    char *buf)
 {
+	unsigned long freq;
 	struct kgsl_device *device = kgsl_device_from_dev(dev);
 	struct kgsl_pwrctrl *pwr;
 
 	if (device == NULL)
 		return 0;
 	pwr = &device->pwrctrl;
-	return snprintf(buf, PAGE_SIZE, "%ld\n", kgsl_pwrctrl_active_freq(pwr));
+
+	if (device->state == KGSL_STATE_SLUMBER)
+		freq = pwr->pwrlevels[pwr->num_pwrlevels - 1].gpu_freq;
+	else
+		freq = kgsl_pwrctrl_active_freq(pwr);
+
+	return snprintf(buf, PAGE_SIZE, "%lu\n", freq);
 }
 
 static ssize_t __timer_store(struct device *dev, struct device_attribute *attr,