---

yaml --- r: 228776 b: refs/heads/master c: c185812 h: refs/heads/master v: v3
git-mirror · Dec 5, 2010 · 23c4394 · 23c4394
1 parent f4acefe
commit 23c4394
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Showing 3 changed files with 18 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a589b9f429ac0e5bcdebda0f74ee313d39d69b7f
+refs/heads/master: c1858123dba4a9e40355363ac7a153ea23a5315d
diff --git a/trunk/drivers/gpu/drm/i915/i915_reg.h b/trunk/drivers/gpu/drm/i915/i915_reg.h
@@ -2712,6 +2712,7 @@
 #define PCH_DPLL(pipe) _PIPE(pipe, PCH_DPLL_A, PCH_DPLL_B)
 
 #define PCH_FPA0                0xc6040
+#define  FP_CB_TUNE		(0x3<<22)
 #define PCH_FPA1                0xc6044
 #define PCH_FPB0                0xc6048
 #define PCH_FPB1                0xc604c

diff --git a/trunk/drivers/gpu/drm/i915/intel_display.c b/trunk/drivers/gpu/drm/i915/intel_display.c
@@ -3857,6 +3857,22 @@ static int intel_crtc_mode_set(struct drm_crtc *crtc,
 				reduced_clock.m2;
 	}
 
+	/* Enable autotuning of the PLL clock (if permissible) */
+	if (HAS_PCH_SPLIT(dev)) {
+		int factor = 21;
+
+		if (is_lvds) {
+			if ((dev_priv->lvds_use_ssc &&
+			     dev_priv->lvds_ssc_freq == 100) ||
+			    (I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP)
+				factor = 25;
+		} else if (is_sdvo && is_tv)
+			factor = 20;
+
+		if (clock.m1 < factor * clock.n)
+			fp |= FP_CB_TUNE;
+	}
+
 	dpll = 0;
 	if (!HAS_PCH_SPLIT(dev))
 		dpll = DPLL_VGA_MODE_DIS;
@@ -4071,7 +4087,6 @@ static int intel_crtc_mode_set(struct drm_crtc *crtc,
 	}
 
 	if (!has_edp_encoder || intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
-		I915_WRITE(fp_reg, fp);
 		I915_WRITE(dpll_reg, dpll);
 
 		/* Wait for the clocks to stabilize. */