[PATCH 07/11] drm/i915/cdclk: Factor out INTEL_OUTPUT_DSI check in vlv_dsi_min_cdclk()

[Ville Syrjala <ville.syrjala@linux.intel.com>]

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

All the if statements in vlv_dsi_min_cdclk() check for
INTEL_OUTPUT_DSI. Make life simpler by checking that just
once at the start.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/vlv_dsi.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c b/drivers/gpu/drm/i915/display/vlv_dsi.c
index 49a895589150..708639178e29 100644
--- a/drivers/gpu/drm/i915/display/vlv_dsi.c
+++ b/drivers/gpu/drm/i915/display/vlv_dsi.c
@@ -1763,26 +1763,26 @@ static void vlv_dphy_param_init(struct intel_dsi *intel_dsi)
 int vlv_dsi_min_cdclk(const struct intel_crtc_state *crtc_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
-	int min_cdclk = 0;
+
+	if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
+		return 0;
 
 	/*
 	 * On Valleyview some DSI panels lose (v|h)sync when the clock is lower
 	 * than 320000KHz.
 	 */
-	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI) &&
-	    IS_VALLEYVIEW(dev_priv))
-		min_cdclk = max(320000, min_cdclk);
+	if (IS_VALLEYVIEW(dev_priv))
+		return 320000;
 
 	/*
 	 * On Geminilake once the CDCLK gets as low as 79200
 	 * picture gets unstable, despite that values are
 	 * correct for DSI PLL and DE PLL.
 	 */
-	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI) &&
-	    IS_GEMINILAKE(dev_priv))
-		min_cdclk = max(158400, min_cdclk);
+	if (IS_GEMINILAKE(dev_priv))
+		return 158400;
 
-	return min_cdclk;
+	return 0;
 }
 
 typedef void (*vlv_dsi_dmi_quirk_func)(struct intel_dsi *intel_dsi);
-- 
2.45.2