diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 41d49a4d25d352fe27f7a7fbcc0318c1dcfdf0d6..28294470ae31f2275a6b984810d6ebb206d5a6e0 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1151,13 +1151,8 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
 		rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI) & GEN6_CURIAVG_MASK;
 		rpcurdown = I915_READ(GEN6_RP_CUR_DOWN) & GEN6_CURBSYTAVG_MASK;
 		rpprevdown = I915_READ(GEN6_RP_PREV_DOWN) & GEN6_CURBSYTAVG_MASK;
-		if (INTEL_GEN(dev_priv) >= 9)
-			cagf = (rpstat & GEN9_CAGF_MASK) >> GEN9_CAGF_SHIFT;
-		else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
-			cagf = (rpstat & HSW_CAGF_MASK) >> HSW_CAGF_SHIFT;
-		else
-			cagf = (rpstat & GEN6_CAGF_MASK) >> GEN6_CAGF_SHIFT;
-		cagf = intel_gpu_freq(dev_priv, cagf);
+		cagf = intel_gpu_freq(dev_priv,
+				      intel_get_cagf(dev_priv, rpstat));
 
 		intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
 
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 9a890f6ad2df5ae0a2c0c211a19ef605e8a14776..019117144b3bc96ece3ec20d097be675c6cd2ec3 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -4226,6 +4226,8 @@ int intel_freq_opcode(struct drm_i915_private *dev_priv, int val);
 u64 intel_rc6_residency_us(struct drm_i915_private *dev_priv,
 			   const i915_reg_t reg);
 
+u32 intel_get_cagf(struct drm_i915_private *dev_priv, u32 rpstat1);
+
 #define I915_READ8(reg)		dev_priv->uncore.funcs.mmio_readb(dev_priv, (reg), true)
 #define I915_WRITE8(reg, val)	dev_priv->uncore.funcs.mmio_writeb(dev_priv, (reg), (val), true)
 
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index 791759f632e1dd65cde71891c0db6177281ea0e9..450ac7d343ad89088c1169c3acf879dda9ca88ca 100644
--- a/drivers/gpu/drm/i915/i915_sysfs.c
+++ b/drivers/gpu/drm/i915/i915_sysfs.c
@@ -252,14 +252,9 @@ static ssize_t gt_act_freq_mhz_show(struct device *kdev,
 		freq = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
 		ret = intel_gpu_freq(dev_priv, (freq >> 8) & 0xff);
 	} else {
-		u32 rpstat = I915_READ(GEN6_RPSTAT1);
-		if (INTEL_GEN(dev_priv) >= 9)
-			ret = (rpstat & GEN9_CAGF_MASK) >> GEN9_CAGF_SHIFT;
-		else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
-			ret = (rpstat & HSW_CAGF_MASK) >> HSW_CAGF_SHIFT;
-		else
-			ret = (rpstat & GEN6_CAGF_MASK) >> GEN6_CAGF_SHIFT;
-		ret = intel_gpu_freq(dev_priv, ret);
+		ret = intel_gpu_freq(dev_priv,
+				     intel_get_cagf(dev_priv,
+						    I915_READ(GEN6_RPSTAT1)));
 	}
 	mutex_unlock(&dev_priv->pcu_lock);
 
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index e445ec17483178fcc3bcdea41a06e42e0c90a9f1..f1dc36c1fd697eaa6269cf9ce4e46d723948a7d7 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -9468,3 +9468,17 @@ u64 intel_rc6_residency_us(struct drm_i915_private *dev_priv,
 	intel_runtime_pm_put(dev_priv);
 	return DIV_ROUND_UP_ULL(time_hw * units, div);
 }
+
+u32 intel_get_cagf(struct drm_i915_private *dev_priv, u32 rpstat)
+{
+	u32 cagf;
+
+	if (INTEL_GEN(dev_priv) >= 9)
+		cagf = (rpstat & GEN9_CAGF_MASK) >> GEN9_CAGF_SHIFT;
+	else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
+		cagf = (rpstat & HSW_CAGF_MASK) >> HSW_CAGF_SHIFT;
+	else
+		cagf = (rpstat & GEN6_CAGF_MASK) >> GEN6_CAGF_SHIFT;
+
+	return  cagf;
+}