drm/i915: Clean up WRPLL/SPLL #defines

Luckily the bit definitions match, but it's still confusing
to use one when handling the other. So sprinkle some OCD over
the #defines to make them match and use the right version in
each place.

Maybe we should unify these definitions completely, but that
can always be done sometime in the future.
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_reg.h

@@ -5922,9 +5922,10 @@ enum punit_power_well {
 #define WRPLL_CTL1			0x46040
 #define WRPLL_CTL2			0x46060
 #define  WRPLL_PLL_ENABLE		(1<<31)
-#define  WRPLL_PLL_SELECT_SSC		(0x01<<28)
-#define  WRPLL_PLL_SELECT_NON_SSC	(0x02<<28)
-#define  WRPLL_PLL_SELECT_LCPLL_2700	(0x03<<28)
+#define  WRPLL_PLL_SSC			(1<<28)
+#define  WRPLL_PLL_NON_SSC		(2<<28)
+#define  WRPLL_PLL_LCPLL		(3<<28)
+#define  WRPLL_PLL_REF_MASK		(3<<28)
 /* WRPLL divider programming */
 #define  WRPLL_DIVIDER_REFERENCE(x)	((x)<<0)
 #define  WRPLL_DIVIDER_REF_MASK		(0xff)

drivers/gpu/drm/i915/intel_ddi.c

@@ -588,9 +588,9 @@ static int intel_ddi_calc_wrpll_link(struct drm_i915_private *dev_priv,
 	u32 wrpll;
 
 	wrpll = I915_READ(reg);
-	switch (wrpll & SPLL_PLL_REF_MASK) {
-	case SPLL_PLL_SSC:
-	case SPLL_PLL_NON_SSC:
+	switch (wrpll & WRPLL_PLL_REF_MASK) {
+	case WRPLL_PLL_SSC:
+	case WRPLL_PLL_NON_SSC:
 		/*
 		 * We could calculate spread here, but our checking
 		 * code only cares about 5% accuracy, and spread is a max of
@@ -598,7 +598,7 @@ static int intel_ddi_calc_wrpll_link(struct drm_i915_private *dev_priv,
 		 */
 		refclk = 135;
 		break;
-	case SPLL_PLL_LCPLL:
+	case WRPLL_PLL_LCPLL:
 		refclk = LC_FREQ;
 		break;
 	default:
@@ -780,7 +780,7 @@ bool intel_ddi_pll_select(struct intel_crtc *intel_crtc)
 
 		intel_ddi_calculate_wrpll(clock * 1000, &r2, &n2, &p);
 
-		val = WRPLL_PLL_ENABLE | WRPLL_PLL_SELECT_LCPLL_2700 |
+		val = WRPLL_PLL_ENABLE | WRPLL_PLL_LCPLL |
 		      WRPLL_DIVIDER_REFERENCE(r2) | WRPLL_DIVIDER_FEEDBACK(n2) |
 		      WRPLL_DIVIDER_POST(p);
 
@@ -879,7 +879,7 @@ void intel_ddi_pll_enable(struct intel_crtc *crtc)
 
 		intel_ddi_calculate_wrpll(clock * 1000, &r2, &n2, &p);
 
-		new_val = WRPLL_PLL_ENABLE | WRPLL_PLL_SELECT_LCPLL_2700 |
+		new_val = WRPLL_PLL_ENABLE | WRPLL_PLL_LCPLL |
 			  WRPLL_DIVIDER_REFERENCE(r2) |
 			  WRPLL_DIVIDER_FEEDBACK(n2) | WRPLL_DIVIDER_POST(p);