[Intel-gfx] [PATCH 4/5] drm/i915: Use intel_de_rmw() in bxt/glk/cnl+ cdclk programming

[Ville Syrjala]

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

Replace the hand rolled rmw sequences with intel_de_rmw().

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_cdclk.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
index d7d051968af6..ab68a2d70830 100644
--- a/drivers/gpu/drm/i915/display/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
@@ -1472,12 +1472,9 @@ static void bxt_de_pll_disable(struct drm_i915_private *dev_priv)
 static void bxt_de_pll_enable(struct drm_i915_private *dev_priv, int vco)
 {
 	int ratio = DIV_ROUND_CLOSEST(vco, dev_priv->cdclk.hw.ref);
-	u32 val;
 
-	val = intel_de_read(dev_priv, BXT_DE_PLL_CTL);
-	val &= ~BXT_DE_PLL_RATIO_MASK;
-	val |= BXT_DE_PLL_RATIO(ratio);
-	intel_de_write(dev_priv, BXT_DE_PLL_CTL, val);
+	intel_de_rmw(dev_priv, BXT_DE_PLL_CTL,
+		     BXT_DE_PLL_RATIO_MASK, BXT_DE_PLL_RATIO(ratio));
 
 	intel_de_write(dev_priv, BXT_DE_PLL_ENABLE, BXT_DE_PLL_PLL_ENABLE);
 
@@ -1491,11 +1488,8 @@ static void bxt_de_pll_enable(struct drm_i915_private *dev_priv, int vco)
 
 static void cnl_cdclk_pll_disable(struct drm_i915_private *dev_priv)
 {
-	u32 val;
-
-	val = intel_de_read(dev_priv, BXT_DE_PLL_ENABLE);
-	val &= ~BXT_DE_PLL_PLL_ENABLE;
-	intel_de_write(dev_priv, BXT_DE_PLL_ENABLE, val);
+	intel_de_rmw(dev_priv, BXT_DE_PLL_ENABLE,
+		     BXT_DE_PLL_PLL_ENABLE, 0);
 
 	/* Timeout 200us */
 	if (wait_for((intel_de_read(dev_priv, BXT_DE_PLL_ENABLE) & BXT_DE_PLL_LOCK) == 0, 1))
-- 
2.26.3