diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 8e022cc..25e86ad 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -40,6 +40,7 @@ i915-y += intel_bios.o \
 	  intel_fdi.o \
 	  intel_modes.o \
 	  intel_overlay.o \
+	  intel_pll.o \
 	  intel_sideband.o \
 	  intel_sprite.o
 i915-$(CONFIG_ACPI)		+= intel_acpi.o intel_opregion.o
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index e23ca4b..3590130 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -41,13 +41,6 @@
 #include <drm/drm_crtc_helper.h>
 #include <linux/dma_remapping.h>
 
-static void intel_increase_pllclock(struct drm_crtc *crtc);
-
-static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
-				struct intel_crtc_config *pipe_config);
-static void ironlake_pch_clock_get(struct intel_crtc *crtc,
-				   struct intel_crtc_config *pipe_config);
-
 static int intel_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mode,
 			  int x, int y, struct drm_framebuffer *old_fb);
 static int intel_framebuffer_init(struct drm_device *dev,
@@ -55,21 +48,6 @@ static int intel_framebuffer_init(struct drm_device *dev,
 				  struct drm_mode_fb_cmd2 *mode_cmd,
 				  struct drm_i915_gem_object *obj);
 
-typedef struct {
-	int	min, max;
-} intel_range_t;
-
-typedef struct {
-	int	dot_limit;
-	int	p2_slow, p2_fast;
-} intel_p2_t;
-
-typedef struct intel_limit intel_limit_t;
-struct intel_limit {
-	intel_range_t   dot, vco, n, m, m1, m2, p, p1;
-	intel_p2_t	    p2;
-};
-
 int
 intel_pch_rawclk(struct drm_device *dev)
 {
@@ -80,253 +58,6 @@ intel_pch_rawclk(struct drm_device *dev)
 	return I915_READ(PCH_RAWCLK_FREQ) & RAWCLK_FREQ_MASK;
 }
 
-static const intel_limit_t intel_limits_i8xx_dac = {
-	.dot = { .min = 25000, .max = 350000 },
-	.vco = { .min = 908000, .max = 1512000 },
-	.n = { .min = 2, .max = 16 },
-	.m = { .min = 96, .max = 140 },
-	.m1 = { .min = 18, .max = 26 },
-	.m2 = { .min = 6, .max = 16 },
-	.p = { .min = 4, .max = 128 },
-	.p1 = { .min = 2, .max = 33 },
-	.p2 = { .dot_limit = 165000,
-		.p2_slow = 4, .p2_fast = 2 },
-};
-
-static const intel_limit_t intel_limits_i8xx_dvo = {
-	.dot = { .min = 25000, .max = 350000 },
-	.vco = { .min = 908000, .max = 1512000 },
-	.n = { .min = 2, .max = 16 },
-	.m = { .min = 96, .max = 140 },
-	.m1 = { .min = 18, .max = 26 },
-	.m2 = { .min = 6, .max = 16 },
-	.p = { .min = 4, .max = 128 },
-	.p1 = { .min = 2, .max = 33 },
-	.p2 = { .dot_limit = 165000,
-		.p2_slow = 4, .p2_fast = 4 },
-};
-
-static const intel_limit_t intel_limits_i8xx_lvds = {
-	.dot = { .min = 25000, .max = 350000 },
-	.vco = { .min = 908000, .max = 1512000 },
-	.n = { .min = 2, .max = 16 },
-	.m = { .min = 96, .max = 140 },
-	.m1 = { .min = 18, .max = 26 },
-	.m2 = { .min = 6, .max = 16 },
-	.p = { .min = 4, .max = 128 },
-	.p1 = { .min = 1, .max = 6 },
-	.p2 = { .dot_limit = 165000,
-		.p2_slow = 14, .p2_fast = 7 },
-};
-
-static const intel_limit_t intel_limits_i9xx_sdvo = {
-	.dot = { .min = 20000, .max = 400000 },
-	.vco = { .min = 1400000, .max = 2800000 },
-	.n = { .min = 1, .max = 6 },
-	.m = { .min = 70, .max = 120 },
-	.m1 = { .min = 8, .max = 18 },
-	.m2 = { .min = 3, .max = 7 },
-	.p = { .min = 5, .max = 80 },
-	.p1 = { .min = 1, .max = 8 },
-	.p2 = { .dot_limit = 200000,
-		.p2_slow = 10, .p2_fast = 5 },
-};
-
-static const intel_limit_t intel_limits_i9xx_lvds = {
-	.dot = { .min = 20000, .max = 400000 },
-	.vco = { .min = 1400000, .max = 2800000 },
-	.n = { .min = 1, .max = 6 },
-	.m = { .min = 70, .max = 120 },
-	.m1 = { .min = 8, .max = 18 },
-	.m2 = { .min = 3, .max = 7 },
-	.p = { .min = 7, .max = 98 },
-	.p1 = { .min = 1, .max = 8 },
-	.p2 = { .dot_limit = 112000,
-		.p2_slow = 14, .p2_fast = 7 },
-};
-
-
-static const intel_limit_t intel_limits_g4x_sdvo = {
-	.dot = { .min = 25000, .max = 270000 },
-	.vco = { .min = 1750000, .max = 3500000},
-	.n = { .min = 1, .max = 4 },
-	.m = { .min = 104, .max = 138 },
-	.m1 = { .min = 17, .max = 23 },
-	.m2 = { .min = 5, .max = 11 },
-	.p = { .min = 10, .max = 30 },
-	.p1 = { .min = 1, .max = 3},
-	.p2 = { .dot_limit = 270000,
-		.p2_slow = 10,
-		.p2_fast = 10
-	},
-};
-
-static const intel_limit_t intel_limits_g4x_hdmi = {
-	.dot = { .min = 22000, .max = 400000 },
-	.vco = { .min = 1750000, .max = 3500000},
-	.n = { .min = 1, .max = 4 },
-	.m = { .min = 104, .max = 138 },
-	.m1 = { .min = 16, .max = 23 },
-	.m2 = { .min = 5, .max = 11 },
-	.p = { .min = 5, .max = 80 },
-	.p1 = { .min = 1, .max = 8},
-	.p2 = { .dot_limit = 165000,
-		.p2_slow = 10, .p2_fast = 5 },
-};
-
-static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
-	.dot = { .min = 20000, .max = 115000 },
-	.vco = { .min = 1750000, .max = 3500000 },
-	.n = { .min = 1, .max = 3 },
-	.m = { .min = 104, .max = 138 },
-	.m1 = { .min = 17, .max = 23 },
-	.m2 = { .min = 5, .max = 11 },
-	.p = { .min = 28, .max = 112 },
-	.p1 = { .min = 2, .max = 8 },
-	.p2 = { .dot_limit = 0,
-		.p2_slow = 14, .p2_fast = 14
-	},
-};
-
-static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
-	.dot = { .min = 80000, .max = 224000 },
-	.vco = { .min = 1750000, .max = 3500000 },
-	.n = { .min = 1, .max = 3 },
-	.m = { .min = 104, .max = 138 },
-	.m1 = { .min = 17, .max = 23 },
-	.m2 = { .min = 5, .max = 11 },
-	.p = { .min = 14, .max = 42 },
-	.p1 = { .min = 2, .max = 6 },
-	.p2 = { .dot_limit = 0,
-		.p2_slow = 7, .p2_fast = 7
-	},
-};
-
-static const intel_limit_t intel_limits_pineview_sdvo = {
-	.dot = { .min = 20000, .max = 400000},
-	.vco = { .min = 1700000, .max = 3500000 },
-	/* Pineview's Ncounter is a ring counter */
-	.n = { .min = 3, .max = 6 },
-	.m = { .min = 2, .max = 256 },
-	/* Pineview only has one combined m divider, which we treat as m2. */
-	.m1 = { .min = 0, .max = 0 },
-	.m2 = { .min = 0, .max = 254 },
-	.p = { .min = 5, .max = 80 },
-	.p1 = { .min = 1, .max = 8 },
-	.p2 = { .dot_limit = 200000,
-		.p2_slow = 10, .p2_fast = 5 },
-};
-
-static const intel_limit_t intel_limits_pineview_lvds = {
-	.dot = { .min = 20000, .max = 400000 },
-	.vco = { .min = 1700000, .max = 3500000 },
-	.n = { .min = 3, .max = 6 },
-	.m = { .min = 2, .max = 256 },
-	.m1 = { .min = 0, .max = 0 },
-	.m2 = { .min = 0, .max = 254 },
-	.p = { .min = 7, .max = 112 },
-	.p1 = { .min = 1, .max = 8 },
-	.p2 = { .dot_limit = 112000,
-		.p2_slow = 14, .p2_fast = 14 },
-};
-
-/* Ironlake / Sandybridge
- *
- * We calculate clock using (register_value + 2) for N/M1/M2, so here
- * the range value for them is (actual_value - 2).
- */
-static const intel_limit_t intel_limits_ironlake_dac = {
-	.dot = { .min = 25000, .max = 350000 },
-	.vco = { .min = 1760000, .max = 3510000 },
-	.n = { .min = 1, .max = 5 },
-	.m = { .min = 79, .max = 127 },
-	.m1 = { .min = 12, .max = 22 },
-	.m2 = { .min = 5, .max = 9 },
-	.p = { .min = 5, .max = 80 },
-	.p1 = { .min = 1, .max = 8 },
-	.p2 = { .dot_limit = 225000,
-		.p2_slow = 10, .p2_fast = 5 },
-};
-
-static const intel_limit_t intel_limits_ironlake_single_lvds = {
-	.dot = { .min = 25000, .max = 350000 },
-	.vco = { .min = 1760000, .max = 3510000 },
-	.n = { .min = 1, .max = 3 },
-	.m = { .min = 79, .max = 118 },
-	.m1 = { .min = 12, .max = 22 },
-	.m2 = { .min = 5, .max = 9 },
-	.p = { .min = 28, .max = 112 },
-	.p1 = { .min = 2, .max = 8 },
-	.p2 = { .dot_limit = 225000,
-		.p2_slow = 14, .p2_fast = 14 },
-};
-
-static const intel_limit_t intel_limits_ironlake_dual_lvds = {
-	.dot = { .min = 25000, .max = 350000 },
-	.vco = { .min = 1760000, .max = 3510000 },
-	.n = { .min = 1, .max = 3 },
-	.m = { .min = 79, .max = 127 },
-	.m1 = { .min = 12, .max = 22 },
-	.m2 = { .min = 5, .max = 9 },
-	.p = { .min = 14, .max = 56 },
-	.p1 = { .min = 2, .max = 8 },
-	.p2 = { .dot_limit = 225000,
-		.p2_slow = 7, .p2_fast = 7 },
-};
-
-/* LVDS 100mhz refclk limits. */
-static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
-	.dot = { .min = 25000, .max = 350000 },
-	.vco = { .min = 1760000, .max = 3510000 },
-	.n = { .min = 1, .max = 2 },
-	.m = { .min = 79, .max = 126 },
-	.m1 = { .min = 12, .max = 22 },
-	.m2 = { .min = 5, .max = 9 },
-	.p = { .min = 28, .max = 112 },
-	.p1 = { .min = 2, .max = 8 },
-	.p2 = { .dot_limit = 225000,
-		.p2_slow = 14, .p2_fast = 14 },
-};
-
-static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
-	.dot = { .min = 25000, .max = 350000 },
-	.vco = { .min = 1760000, .max = 3510000 },
-	.n = { .min = 1, .max = 3 },
-	.m = { .min = 79, .max = 126 },
-	.m1 = { .min = 12, .max = 22 },
-	.m2 = { .min = 5, .max = 9 },
-	.p = { .min = 14, .max = 42 },
-	.p1 = { .min = 2, .max = 6 },
-	.p2 = { .dot_limit = 225000,
-		.p2_slow = 7, .p2_fast = 7 },
-};
-
-static const intel_limit_t intel_limits_vlv = {
-	 /*
-	  * These are the data rate limits (measured in fast clocks)
-	  * since those are the strictest limits we have. The fast
-	  * clock and actual rate limits are more relaxed, so checking
-	  * them would make no difference.
-	  */
-	.dot = { .min = 25000 * 5, .max = 270000 * 5 },
-	.vco = { .min = 4000000, .max = 6000000 },
-	.n = { .min = 1, .max = 7 },
-	.m1 = { .min = 2, .max = 3 },
-	.m2 = { .min = 11, .max = 156 },
-	.p1 = { .min = 2, .max = 3 },
-	.p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
-};
-
-static void vlv_clock(int refclk, intel_clock_t *clock)
-{
-	clock->m = clock->m1 * clock->m2;
-	clock->p = clock->p1 * clock->p2;
-	if (WARN_ON(clock->n == 0 || clock->p == 0))
-		return;
-	clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
-	clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
-}
-
 /**
  * Returns whether any output on the specified pipe is of the specified type
  */
@@ -342,384 +73,6 @@ bool intel_pipe_has_type(struct drm_crtc *crtc, int type)
 	return false;
 }
 
-static const intel_limit_t *intel_ironlake_limit(struct drm_crtc *crtc,
-						int refclk)
-{
-	struct drm_device *dev = crtc->dev;
-	const intel_limit_t *limit;
-
-	if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
-		if (intel_is_dual_link_lvds(dev)) {
-			if (refclk == 100000)
-				limit = &intel_limits_ironlake_dual_lvds_100m;
-			else
-				limit = &intel_limits_ironlake_dual_lvds;
-		} else {
-			if (refclk == 100000)
-				limit = &intel_limits_ironlake_single_lvds_100m;
-			else
-				limit = &intel_limits_ironlake_single_lvds;
-		}
-	} else
-		limit = &intel_limits_ironlake_dac;
-
-	return limit;
-}
-
-static const intel_limit_t *intel_g4x_limit(struct drm_crtc *crtc)
-{
-	struct drm_device *dev = crtc->dev;
-	const intel_limit_t *limit;
-
-	if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
-		if (intel_is_dual_link_lvds(dev))
-			limit = &intel_limits_g4x_dual_channel_lvds;
-		else
-			limit = &intel_limits_g4x_single_channel_lvds;
-	} else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI) ||
-		   intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG)) {
-		limit = &intel_limits_g4x_hdmi;
-	} else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO)) {
-		limit = &intel_limits_g4x_sdvo;
-	} else /* The option is for other outputs */
-		limit = &intel_limits_i9xx_sdvo;
-
-	return limit;
-}
-
-static const intel_limit_t *intel_limit(struct drm_crtc *crtc, int refclk)
-{
-	struct drm_device *dev = crtc->dev;
-	const intel_limit_t *limit;
-
-	if (HAS_PCH_SPLIT(dev))
-		limit = intel_ironlake_limit(crtc, refclk);
-	else if (IS_G4X(dev)) {
-		limit = intel_g4x_limit(crtc);
-	} else if (IS_PINEVIEW(dev)) {
-		if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
-			limit = &intel_limits_pineview_lvds;
-		else
-			limit = &intel_limits_pineview_sdvo;
-	} else if (IS_VALLEYVIEW(dev)) {
-		limit = &intel_limits_vlv;
-	} else if (!IS_GEN2(dev)) {
-		if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
-			limit = &intel_limits_i9xx_lvds;
-		else
-			limit = &intel_limits_i9xx_sdvo;
-	} else {
-		if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
-			limit = &intel_limits_i8xx_lvds;
-		else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO))
-			limit = &intel_limits_i8xx_dvo;
-		else
-			limit = &intel_limits_i8xx_dac;
-	}
-	return limit;
-}
-
-/* m1 is reserved as 0 in Pineview, n is a ring counter */
-static void pineview_clock(int refclk, intel_clock_t *clock)
-{
-	clock->m = clock->m2 + 2;
-	clock->p = clock->p1 * clock->p2;
-	if (WARN_ON(clock->n == 0 || clock->p == 0))
-		return;
-	clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
-	clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
-}
-
-static uint32_t i9xx_dpll_compute_m(struct dpll *dpll)
-{
-	return 5 * (dpll->m1 + 2) + (dpll->m2 + 2);
-}
-
-static void i9xx_clock(int refclk, intel_clock_t *clock)
-{
-	clock->m = i9xx_dpll_compute_m(clock);
-	clock->p = clock->p1 * clock->p2;
-	if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
-		return;
-	clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);
-	clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
-}
-
-#define INTELPllInvalid(s)   do { /* DRM_DEBUG(s); */ return false; } while (0)
-/**
- * Returns whether the given set of divisors are valid for a given refclk with
- * the given connectors.
- */
-
-static bool intel_PLL_is_valid(struct drm_device *dev,
-			       const intel_limit_t *limit,
-			       const intel_clock_t *clock)
-{
-	if (clock->n   < limit->n.min   || limit->n.max   < clock->n)
-		INTELPllInvalid("n out of range\n");
-	if (clock->p1  < limit->p1.min  || limit->p1.max  < clock->p1)
-		INTELPllInvalid("p1 out of range\n");
-	if (clock->m2  < limit->m2.min  || limit->m2.max  < clock->m2)
-		INTELPllInvalid("m2 out of range\n");
-	if (clock->m1  < limit->m1.min  || limit->m1.max  < clock->m1)
-		INTELPllInvalid("m1 out of range\n");
-
-	if (!IS_PINEVIEW(dev) && !IS_VALLEYVIEW(dev))
-		if (clock->m1 <= clock->m2)
-			INTELPllInvalid("m1 <= m2\n");
-
-	if (!IS_VALLEYVIEW(dev)) {
-		if (clock->p < limit->p.min || limit->p.max < clock->p)
-			INTELPllInvalid("p out of range\n");
-		if (clock->m < limit->m.min || limit->m.max < clock->m)
-			INTELPllInvalid("m out of range\n");
-	}
-
-	if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
-		INTELPllInvalid("vco out of range\n");
-	/* XXX: We may need to be checking "Dot clock" depending on the multiplier,
-	 * connector, etc., rather than just a single range.
-	 */
-	if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
-		INTELPllInvalid("dot out of range\n");
-
-	return true;
-}
-
-static bool
-i9xx_find_best_dpll(const intel_limit_t *limit, struct drm_crtc *crtc,
-		    int target, int refclk, intel_clock_t *match_clock,
-		    intel_clock_t *best_clock)
-{
-	struct drm_device *dev = crtc->dev;
-	intel_clock_t clock;
-	int err = target;
-
-	if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
-		/*
-		 * For LVDS just rely on its current settings for dual-channel.
-		 * We haven't figured out how to reliably set up different
-		 * single/dual channel state, if we even can.
-		 */
-		if (intel_is_dual_link_lvds(dev))
-			clock.p2 = limit->p2.p2_fast;
-		else
-			clock.p2 = limit->p2.p2_slow;
-	} else {
-		if (target < limit->p2.dot_limit)
-			clock.p2 = limit->p2.p2_slow;
-		else
-			clock.p2 = limit->p2.p2_fast;
-	}
-
-	memset(best_clock, 0, sizeof(*best_clock));
-
-	for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
-	     clock.m1++) {
-		for (clock.m2 = limit->m2.min;
-		     clock.m2 <= limit->m2.max; clock.m2++) {
-			if (clock.m2 >= clock.m1)
-				break;
-			for (clock.n = limit->n.min;
-			     clock.n <= limit->n.max; clock.n++) {
-				for (clock.p1 = limit->p1.min;
-					clock.p1 <= limit->p1.max; clock.p1++) {
-					int this_err;
-
-					i9xx_clock(refclk, &clock);
-					if (!intel_PLL_is_valid(dev, limit,
-								&clock))
-						continue;
-					if (match_clock &&
-					    clock.p != match_clock->p)
-						continue;
-
-					this_err = abs(clock.dot - target);
-					if (this_err < err) {
-						*best_clock = clock;
-						err = this_err;
-					}
-				}
-			}
-		}
-	}
-
-	return (err != target);
-}
-
-static bool
-pnv_find_best_dpll(const intel_limit_t *limit, struct drm_crtc *crtc,
-		   int target, int refclk, intel_clock_t *match_clock,
-		   intel_clock_t *best_clock)
-{
-	struct drm_device *dev = crtc->dev;
-	intel_clock_t clock;
-	int err = target;
-
-	if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
-		/*
-		 * For LVDS just rely on its current settings for dual-channel.
-		 * We haven't figured out how to reliably set up different
-		 * single/dual channel state, if we even can.
-		 */
-		if (intel_is_dual_link_lvds(dev))
-			clock.p2 = limit->p2.p2_fast;
-		else
-			clock.p2 = limit->p2.p2_slow;
-	} else {
-		if (target < limit->p2.dot_limit)
-			clock.p2 = limit->p2.p2_slow;
-		else
-			clock.p2 = limit->p2.p2_fast;
-	}
-
-	memset(best_clock, 0, sizeof(*best_clock));
-
-	for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
-	     clock.m1++) {
-		for (clock.m2 = limit->m2.min;
-		     clock.m2 <= limit->m2.max; clock.m2++) {
-			for (clock.n = limit->n.min;
-			     clock.n <= limit->n.max; clock.n++) {
-				for (clock.p1 = limit->p1.min;
-					clock.p1 <= limit->p1.max; clock.p1++) {
-					int this_err;
-
-					pineview_clock(refclk, &clock);
-					if (!intel_PLL_is_valid(dev, limit,
-								&clock))
-						continue;
-					if (match_clock &&
-					    clock.p != match_clock->p)
-						continue;
-
-					this_err = abs(clock.dot - target);
-					if (this_err < err) {
-						*best_clock = clock;
-						err = this_err;
-					}
-				}
-			}
-		}
-	}
-
-	return (err != target);
-}
-
-static bool
-g4x_find_best_dpll(const intel_limit_t *limit, struct drm_crtc *crtc,
-		   int target, int refclk, intel_clock_t *match_clock,
-		   intel_clock_t *best_clock)
-{
-	struct drm_device *dev = crtc->dev;
-	intel_clock_t clock;
-	int max_n;
-	bool found;
-	/* approximately equals target * 0.00585 */
-	int err_most = (target >> 8) + (target >> 9);
-	found = false;
-
-	if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
-		if (intel_is_dual_link_lvds(dev))
-			clock.p2 = limit->p2.p2_fast;
-		else
-			clock.p2 = limit->p2.p2_slow;
-	} else {
-		if (target < limit->p2.dot_limit)
-			clock.p2 = limit->p2.p2_slow;
-		else
-			clock.p2 = limit->p2.p2_fast;
-	}
-
-	memset(best_clock, 0, sizeof(*best_clock));
-	max_n = limit->n.max;
-	/* based on hardware requirement, prefer smaller n to precision */
-	for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
-		/* based on hardware requirement, prefere larger m1,m2 */
-		for (clock.m1 = limit->m1.max;
-		     clock.m1 >= limit->m1.min; clock.m1--) {
-			for (clock.m2 = limit->m2.max;
-			     clock.m2 >= limit->m2.min; clock.m2--) {
-				for (clock.p1 = limit->p1.max;
-				     clock.p1 >= limit->p1.min; clock.p1--) {
-					int this_err;
-
-					i9xx_clock(refclk, &clock);
-					if (!intel_PLL_is_valid(dev, limit,
-								&clock))
-						continue;
-
-					this_err = abs(clock.dot - target);
-					if (this_err < err_most) {
-						*best_clock = clock;
-						err_most = this_err;
-						max_n = clock.n;
-						found = true;
-					}
-				}
-			}
-		}
-	}
-	return found;
-}
-
-static bool
-vlv_find_best_dpll(const intel_limit_t *limit, struct drm_crtc *crtc,
-		   int target, int refclk, intel_clock_t *match_clock,
-		   intel_clock_t *best_clock)
-{
-	struct drm_device *dev = crtc->dev;
-	intel_clock_t clock;
-	unsigned int bestppm = 1000000;
-	/* min update 19.2 MHz */
-	int max_n = min(limit->n.max, refclk / 19200);
-	bool found = false;
-
-	target *= 5; /* fast clock */
-
-	memset(best_clock, 0, sizeof(*best_clock));
-
-	/* based on hardware requirement, prefer smaller n to precision */
-	for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
-		for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
-			for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow;
-			     clock.p2 -= clock.p2 > 10 ? 2 : 1) {
-				clock.p = clock.p1 * clock.p2;
-				/* based on hardware requirement, prefer bigger m1,m2 values */
-				for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
-					unsigned int ppm, diff;
-
-					clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n,
-								     refclk * clock.m1);
-
-					vlv_clock(refclk, &clock);
-
-					if (!intel_PLL_is_valid(dev, limit,
-								&clock))
-						continue;
-
-					diff = abs(clock.dot - target);
-					ppm = div_u64(1000000ULL * diff, target);
-
-					if (ppm < 100 && clock.p > best_clock->p) {
-						bestppm = 0;
-						*best_clock = clock;
-						found = true;
-					}
-
-					if (bestppm >= 10 && ppm < bestppm - 10) {
-						bestppm = ppm;
-						*best_clock = clock;
-						found = true;
-					}
-				}
-			}
-		}
-	}
-
-	return found;
-}
-
 bool intel_crtc_active(struct drm_crtc *crtc)
 {
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
@@ -899,103 +252,6 @@ bool ibx_digital_port_connected(struct drm_i915_private *dev_priv,
 	return I915_READ(SDEISR) & bit;
 }
 
-/* Only for pre-ILK configs */
-void assert_pll(struct drm_i915_private *dev_priv,
-		enum pipe pipe, bool state)
-{
-	int reg;
-	u32 val;
-	bool cur_state;
-
-	reg = DPLL(pipe);
-	val = I915_READ(reg);
-	cur_state = !!(val & DPLL_VCO_ENABLE);
-	WARN(cur_state != state,
-	     "PLL state assertion failure (expected %s, current %s)\n",
-	     state_string(state), state_string(cur_state));
-}
-
-/* XXX: the dsi pll is shared between MIPI DSI ports */
-static void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state)
-{
-	u32 val;
-	bool cur_state;
-
-	mutex_lock(&dev_priv->dpio_lock);
-	val = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
-	mutex_unlock(&dev_priv->dpio_lock);
-
-	cur_state = val & DSI_PLL_VCO_EN;
-	WARN(cur_state != state,
-	     "DSI PLL state assertion failure (expected %s, current %s)\n",
-	     state_string(state), state_string(cur_state));
-}
-#define assert_dsi_pll_enabled(d) assert_dsi_pll(d, true)
-#define assert_dsi_pll_disabled(d) assert_dsi_pll(d, false)
-
-struct intel_shared_dpll *
-intel_crtc_to_shared_dpll(struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
-
-	if (crtc->config.shared_dpll < 0)
-		return NULL;
-
-	return &dev_priv->shared_dplls[crtc->config.shared_dpll];
-}
-
-/* For ILK+ */
-void assert_shared_dpll(struct drm_i915_private *dev_priv,
-			struct intel_shared_dpll *pll,
-			bool state)
-{
-	bool cur_state;
-	struct intel_dpll_hw_state hw_state;
-
-	if (HAS_PCH_LPT(dev_priv->dev)) {
-		DRM_DEBUG_DRIVER("LPT detected: skipping PCH PLL test\n");
-		return;
-	}
-
-	if (WARN (!pll,
-		  "asserting DPLL %s with no DPLL\n", state_string(state)))
-		return;
-
-	cur_state = pll->get_hw_state(dev_priv, pll, &hw_state);
-	WARN(cur_state != state,
-	     "%s assertion failure (expected %s, current %s)\n",
-	     pll->name, state_string(state), state_string(cur_state));
-}
-
-static void assert_panel_unlocked(struct drm_i915_private *dev_priv,
-				  enum pipe pipe)
-{
-	int pp_reg, lvds_reg;
-	u32 val;
-	enum pipe panel_pipe = PIPE_A;
-	bool locked = true;
-
-	if (HAS_PCH_SPLIT(dev_priv->dev)) {
-		pp_reg = PCH_PP_CONTROL;
-		lvds_reg = PCH_LVDS;
-	} else {
-		pp_reg = PP_CONTROL;
-		lvds_reg = LVDS;
-	}
-
-	val = I915_READ(pp_reg);
-	if (!(val & PANEL_POWER_ON) ||
-	    ((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS))
-		locked = false;
-
-	if (I915_READ(lvds_reg) & LVDS_PIPEB_SELECT)
-		panel_pipe = PIPE_B;
-
-	WARN(panel_pipe == pipe && locked,
-	     "panel assertion failure, pipe %c regs locked\n",
-	     pipe_name(pipe));
-}
-
 void assert_pipe(struct drm_i915_private *dev_priv,
 		 enum pipe pipe, bool state)
 {
@@ -1101,21 +357,8 @@ static void assert_sprites_disabled(struct drm_i915_private *dev_priv,
 	}
 }
 
-static void ibx_assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
-{
-	u32 val;
-	bool enabled;
-
-	WARN_ON(!(HAS_PCH_IBX(dev_priv->dev) || HAS_PCH_CPT(dev_priv->dev)));
-
-	val = I915_READ(PCH_DREF_CONTROL);
-	enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
-			    DREF_SUPERSPREAD_SOURCE_MASK));
-	WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
-}
-
-static void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
-					   enum pipe pipe)
+void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
+				    enum pipe pipe)
 {
 	int reg;
 	u32 val;
@@ -1285,129 +528,6 @@ static void intel_reset_dpio(struct drm_device *dev)
 	I915_WRITE(DPIO_CTL, I915_READ(DPIO_CTL) | DPIO_CMNRST);
 }
 
-static void vlv_enable_pll(struct intel_crtc *crtc)
-{
-	struct drm_device *dev = crtc->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	int reg = DPLL(crtc->pipe);
-	u32 dpll = crtc->config.dpll_hw_state.dpll;
-
-	assert_pipe_disabled(dev_priv, crtc->pipe);
-
-	/* No really, not for ILK+ */
-	BUG_ON(!IS_VALLEYVIEW(dev_priv->dev));
-
-	/* PLL is protected by panel, make sure we can write it */
-	if (IS_MOBILE(dev_priv->dev) && !IS_I830(dev_priv->dev))
-		assert_panel_unlocked(dev_priv, crtc->pipe);
-
-	I915_WRITE(reg, dpll);
-	POSTING_READ(reg);
-	udelay(150);
-
-	if (wait_for(((I915_READ(reg) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
-		DRM_ERROR("DPLL %d failed to lock\n", crtc->pipe);
-
-	I915_WRITE(DPLL_MD(crtc->pipe), crtc->config.dpll_hw_state.dpll_md);
-	POSTING_READ(DPLL_MD(crtc->pipe));
-
-	/* We do this three times for luck */
-	I915_WRITE(reg, dpll);
-	POSTING_READ(reg);
-	udelay(150); /* wait for warmup */
-	I915_WRITE(reg, dpll);
-	POSTING_READ(reg);
-	udelay(150); /* wait for warmup */
-	I915_WRITE(reg, dpll);
-	POSTING_READ(reg);
-	udelay(150); /* wait for warmup */
-}
-
-static void i9xx_enable_pll(struct intel_crtc *crtc)
-{
-	struct drm_device *dev = crtc->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	int reg = DPLL(crtc->pipe);
-	u32 dpll = crtc->config.dpll_hw_state.dpll;
-
-	assert_pipe_disabled(dev_priv, crtc->pipe);
-
-	/* No really, not for ILK+ */
-	BUG_ON(INTEL_INFO(dev)->gen >= 5);
-
-	/* PLL is protected by panel, make sure we can write it */
-	if (IS_MOBILE(dev) && !IS_I830(dev))
-		assert_panel_unlocked(dev_priv, crtc->pipe);
-
-	I915_WRITE(reg, dpll);
-
-	/* Wait for the clocks to stabilize. */
-	POSTING_READ(reg);
-	udelay(150);
-
-	if (INTEL_INFO(dev)->gen >= 4) {
-		I915_WRITE(DPLL_MD(crtc->pipe),
-			   crtc->config.dpll_hw_state.dpll_md);
-	} else {
-		/* The pixel multiplier can only be updated once the
-		 * DPLL is enabled and the clocks are stable.
-		 *
-		 * So write it again.
-		 */
-		I915_WRITE(reg, dpll);
-	}
-
-	/* We do this three times for luck */
-	I915_WRITE(reg, dpll);
-	POSTING_READ(reg);
-	udelay(150); /* wait for warmup */
-	I915_WRITE(reg, dpll);
-	POSTING_READ(reg);
-	udelay(150); /* wait for warmup */
-	I915_WRITE(reg, dpll);
-	POSTING_READ(reg);
-	udelay(150); /* wait for warmup */
-}
-
-/**
- * i9xx_disable_pll - disable a PLL
- * @dev_priv: i915 private structure
- * @pipe: pipe PLL to disable
- *
- * Disable the PLL for @pipe, making sure the pipe is off first.
- *
- * Note!  This is for pre-ILK only.
- */
-static void i9xx_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
-{
-	/* Don't disable pipe A or pipe A PLLs if needed */
-	if (pipe == PIPE_A && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
-		return;
-
-	/* Make sure the pipe isn't still relying on us */
-	assert_pipe_disabled(dev_priv, pipe);
-
-	I915_WRITE(DPLL(pipe), 0);
-	POSTING_READ(DPLL(pipe));
-}
-
-static void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
-{
-	u32 val = 0;
-
-	/* Make sure the pipe isn't still relying on us */
-	assert_pipe_disabled(dev_priv, pipe);
-
-	/*
-	 * Leave integrated clock source and reference clock enabled for pipe B.
-	 * The latter is needed for VGA hotplug / manual detection.
-	 */
-	if (pipe == PIPE_B)
-		val = DPLL_INTEGRATED_CRI_CLK_VLV | DPLL_REFA_CLK_ENABLE_VLV;
-	I915_WRITE(DPLL(pipe), val);
-	POSTING_READ(DPLL(pipe));
-}
-
 void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
 		struct intel_digital_port *dport)
 {
@@ -1429,77 +549,6 @@ void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
 		     port_name(dport->port), I915_READ(DPLL(0)));
 }
 
-/**
- * ironlake_enable_shared_dpll - enable PCH PLL
- * @dev_priv: i915 private structure
- * @pipe: pipe PLL to enable
- *
- * The PCH PLL needs to be enabled before the PCH transcoder, since it
- * drives the transcoder clock.
- */
-static void ironlake_enable_shared_dpll(struct intel_crtc *crtc)
-{
-	struct drm_device *dev = crtc->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
-
-	/* PCH PLLs only available on ILK, SNB and IVB */
-	BUG_ON(INTEL_INFO(dev)->gen < 5);
-	if (WARN_ON(pll == NULL))
-		return;
-
-	if (WARN_ON(pll->refcount == 0))
-		return;
-
-	DRM_DEBUG_KMS("enable %s (active %d, on? %d)for crtc %d\n",
-		      pll->name, pll->active, pll->on,
-		      crtc->base.base.id);
-
-	if (pll->active++) {
-		WARN_ON(!pll->on);
-		assert_shared_dpll_enabled(dev_priv, pll);
-		return;
-	}
-	WARN_ON(pll->on);
-
-	DRM_DEBUG_KMS("enabling %s\n", pll->name);
-	pll->enable(dev_priv, pll);
-	pll->on = true;
-}
-
-static void intel_disable_shared_dpll(struct intel_crtc *crtc)
-{
-	struct drm_device *dev = crtc->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
-
-	/* PCH only available on ILK+ */
-	BUG_ON(INTEL_INFO(dev)->gen < 5);
-	if (WARN_ON(pll == NULL))
-	       return;
-
-	if (WARN_ON(pll->refcount == 0))
-		return;
-
-	DRM_DEBUG_KMS("disable %s (active %d, on? %d) for crtc %d\n",
-		      pll->name, pll->active, pll->on,
-		      crtc->base.base.id);
-
-	if (WARN_ON(pll->active == 0)) {
-		assert_shared_dpll_disabled(dev_priv, pll);
-		return;
-	}
-
-	assert_shared_dpll_enabled(dev_priv, pll);
-	WARN_ON(!pll->on);
-	if (--pll->active)
-		return;
-
-	DRM_DEBUG_KMS("disabling %s\n", pll->name);
-	pll->disable(dev_priv, pll);
-	pll->on = false;
-}
-
 static void ironlake_enable_pch_transcoder(struct drm_i915_private *dev_priv,
 					   enum pipe pipe)
 {
@@ -2693,98 +1742,6 @@ static void lpt_pch_enable(struct drm_crtc *crtc)
 	lpt_enable_pch_transcoder(dev_priv, cpu_transcoder);
 }
 
-static void intel_put_shared_dpll(struct intel_crtc *crtc)
-{
-	struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
-
-	if (pll == NULL)
-		return;
-
-	if (pll->refcount == 0) {
-		WARN(1, "bad %s refcount\n", pll->name);
-		return;
-	}
-
-	if (--pll->refcount == 0) {
-		WARN_ON(pll->on);
-		WARN_ON(pll->active);
-	}
-
-	crtc->config.shared_dpll = DPLL_ID_PRIVATE;
-}
-
-static struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
-	struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
-	enum intel_dpll_id i;
-
-	if (pll) {
-		DRM_DEBUG_KMS("CRTC:%d dropping existing %s\n",
-			      crtc->base.base.id, pll->name);
-		intel_put_shared_dpll(crtc);
-	}
-
-	if (HAS_PCH_IBX(dev_priv->dev)) {
-		/* Ironlake PCH has a fixed PLL->PCH pipe mapping. */
-		i = (enum intel_dpll_id) crtc->pipe;
-		pll = &dev_priv->shared_dplls[i];
-
-		DRM_DEBUG_KMS("CRTC:%d using pre-allocated %s\n",
-			      crtc->base.base.id, pll->name);
-
-		goto found;
-	}
-
-	for (i = 0; i < dev_priv->num_shared_dpll; i++) {
-		pll = &dev_priv->shared_dplls[i];
-
-		/* Only want to check enabled timings first */
-		if (pll->refcount == 0)
-			continue;
-
-		if (memcmp(&crtc->config.dpll_hw_state, &pll->hw_state,
-			   sizeof(pll->hw_state)) == 0) {
-			DRM_DEBUG_KMS("CRTC:%d sharing existing %s (refcount %d, ative %d)\n",
-				      crtc->base.base.id,
-				      pll->name, pll->refcount, pll->active);
-
-			goto found;
-		}
-	}
-
-	/* Ok no matching timings, maybe there's a free one? */
-	for (i = 0; i < dev_priv->num_shared_dpll; i++) {
-		pll = &dev_priv->shared_dplls[i];
-		if (pll->refcount == 0) {
-			DRM_DEBUG_KMS("CRTC:%d allocated %s\n",
-				      crtc->base.base.id, pll->name);
-			goto found;
-		}
-	}
-
-	return NULL;
-
-found:
-	crtc->config.shared_dpll = i;
-	DRM_DEBUG_DRIVER("using %s for pipe %c\n", pll->name,
-			 pipe_name(crtc->pipe));
-
-	if (pll->active == 0) {
-		memcpy(&pll->hw_state, &crtc->config.dpll_hw_state,
-		       sizeof(pll->hw_state));
-
-		DRM_DEBUG_DRIVER("setting up %s\n", pll->name);
-		WARN_ON(pll->on);
-		assert_shared_dpll_disabled(dev_priv, pll);
-
-		pll->mode_set(dev_priv, pll);
-	}
-	pll->refcount++;
-
-	return pll;
-}
-
 static void cpt_verify_modeset(struct drm_device *dev, int pipe)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
@@ -4166,388 +3123,65 @@ static void compute_m_n(unsigned int m, unsigned int n,
 			uint32_t *ret_m, uint32_t *ret_n)
 {
 	*ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX);
-	*ret_m = div_u64((uint64_t) m * *ret_n, n);
-	intel_reduce_m_n_ratio(ret_m, ret_n);
-}
-
-void
-intel_link_compute_m_n(int bits_per_pixel, int nlanes,
-		       int pixel_clock, int link_clock,
-		       struct intel_link_m_n *m_n)
-{
-	m_n->tu = 64;
-
-	compute_m_n(bits_per_pixel * pixel_clock,
-		    link_clock * nlanes * 8,
-		    &m_n->gmch_m, &m_n->gmch_n);
-
-	compute_m_n(pixel_clock, link_clock,
-		    &m_n->link_m, &m_n->link_n);
-}
-
-static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
-{
-	if (i915.panel_use_ssc >= 0)
-		return i915.panel_use_ssc != 0;
-	return dev_priv->vbt.lvds_use_ssc
-		&& !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
-}
-
-static int i9xx_get_refclk(struct drm_crtc *crtc, int num_connectors)
-{
-	struct drm_device *dev = crtc->dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	int refclk;
-
-	if (IS_VALLEYVIEW(dev)) {
-		refclk = 100000;
-	} else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
-	    intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
-		refclk = dev_priv->vbt.lvds_ssc_freq;
-		DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
-	} else if (!IS_GEN2(dev)) {
-		refclk = 96000;
-	} else {
-		refclk = 48000;
-	}
-
-	return refclk;
-}
-
-static uint32_t pnv_dpll_compute_fp(struct dpll *dpll)
-{
-	return (1 << dpll->n) << 16 | dpll->m2;
-}
-
-static uint32_t i9xx_dpll_compute_fp(struct dpll *dpll)
-{
-	return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;
-}
-
-static void i9xx_update_pll_dividers(struct intel_crtc *crtc,
-				     intel_clock_t *reduced_clock)
-{
-	struct drm_device *dev = crtc->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	int pipe = crtc->pipe;
-	u32 fp, fp2 = 0;
-
-	if (IS_PINEVIEW(dev)) {
-		fp = pnv_dpll_compute_fp(&crtc->config.dpll);
-		if (reduced_clock)
-			fp2 = pnv_dpll_compute_fp(reduced_clock);
-	} else {
-		fp = i9xx_dpll_compute_fp(&crtc->config.dpll);
-		if (reduced_clock)
-			fp2 = i9xx_dpll_compute_fp(reduced_clock);
-	}
-
-	I915_WRITE(FP0(pipe), fp);
-	crtc->config.dpll_hw_state.fp0 = fp;
-
-	crtc->lowfreq_avail = false;
-	if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_LVDS) &&
-	    reduced_clock && i915.powersave) {
-		I915_WRITE(FP1(pipe), fp2);
-		crtc->config.dpll_hw_state.fp1 = fp2;
-		crtc->lowfreq_avail = true;
-	} else {
-		I915_WRITE(FP1(pipe), fp);
-		crtc->config.dpll_hw_state.fp1 = fp;
-	}
-}
-
-static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv, enum pipe
-		pipe)
-{
-	u32 reg_val;
-
-	/*
-	 * PLLB opamp always calibrates to max value of 0x3f, force enable it
-	 * and set it to a reasonable value instead.
-	 */
-	reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
-	reg_val &= 0xffffff00;
-	reg_val |= 0x00000030;
-	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
-
-	reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
-	reg_val &= 0x8cffffff;
-	reg_val = 0x8c000000;
-	vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
-
-	reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
-	reg_val &= 0xffffff00;
-	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
-
-	reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
-	reg_val &= 0x00ffffff;
-	reg_val |= 0xb0000000;
-	vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
-}
-
-static void intel_pch_transcoder_set_m_n(struct intel_crtc *crtc,
-					 struct intel_link_m_n *m_n)
-{
-	struct drm_device *dev = crtc->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	int pipe = crtc->pipe;
-
-	I915_WRITE(PCH_TRANS_DATA_M1(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
-	I915_WRITE(PCH_TRANS_DATA_N1(pipe), m_n->gmch_n);
-	I915_WRITE(PCH_TRANS_LINK_M1(pipe), m_n->link_m);
-	I915_WRITE(PCH_TRANS_LINK_N1(pipe), m_n->link_n);
-}
-
-static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
-					 struct intel_link_m_n *m_n)
-{
-	struct drm_device *dev = crtc->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	int pipe = crtc->pipe;
-	enum transcoder transcoder = crtc->config.cpu_transcoder;
-
-	if (INTEL_INFO(dev)->gen >= 5) {
-		I915_WRITE(PIPE_DATA_M1(transcoder), TU_SIZE(m_n->tu) | m_n->gmch_m);
-		I915_WRITE(PIPE_DATA_N1(transcoder), m_n->gmch_n);
-		I915_WRITE(PIPE_LINK_M1(transcoder), m_n->link_m);
-		I915_WRITE(PIPE_LINK_N1(transcoder), m_n->link_n);
-	} else {
-		I915_WRITE(PIPE_DATA_M_G4X(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
-		I915_WRITE(PIPE_DATA_N_G4X(pipe), m_n->gmch_n);
-		I915_WRITE(PIPE_LINK_M_G4X(pipe), m_n->link_m);
-		I915_WRITE(PIPE_LINK_N_G4X(pipe), m_n->link_n);
-	}
-}
-
-static void intel_dp_set_m_n(struct intel_crtc *crtc)
-{
-	if (crtc->config.has_pch_encoder)
-		intel_pch_transcoder_set_m_n(crtc, &crtc->config.dp_m_n);
-	else
-		intel_cpu_transcoder_set_m_n(crtc, &crtc->config.dp_m_n);
-}
-
-static void vlv_update_pll(struct intel_crtc *crtc)
-{
-	struct drm_device *dev = crtc->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	int pipe = crtc->pipe;
-	u32 dpll, mdiv;
-	u32 bestn, bestm1, bestm2, bestp1, bestp2;
-	u32 coreclk, reg_val, dpll_md;
-
-	mutex_lock(&dev_priv->dpio_lock);
-
-	bestn = crtc->config.dpll.n;
-	bestm1 = crtc->config.dpll.m1;
-	bestm2 = crtc->config.dpll.m2;
-	bestp1 = crtc->config.dpll.p1;
-	bestp2 = crtc->config.dpll.p2;
-
-	/* See eDP HDMI DPIO driver vbios notes doc */
-
-	/* PLL B needs special handling */
-	if (pipe)
-		vlv_pllb_recal_opamp(dev_priv, pipe);
-
-	/* Set up Tx target for periodic Rcomp update */
-	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9_BCAST, 0x0100000f);
-
-	/* Disable target IRef on PLL */
-	reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW8(pipe));
-	reg_val &= 0x00ffffff;
-	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW8(pipe), reg_val);
-
-	/* Disable fast lock */
-	vlv_dpio_write(dev_priv, pipe, VLV_CMN_DW0, 0x610);
-
-	/* Set idtafcrecal before PLL is enabled */
-	mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK));
-	mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT));
-	mdiv |= ((bestn << DPIO_N_SHIFT));
-	mdiv |= (1 << DPIO_K_SHIFT);
-
-	/*
-	 * Post divider depends on pixel clock rate, DAC vs digital (and LVDS,
-	 * but we don't support that).
-	 * Note: don't use the DAC post divider as it seems unstable.
-	 */
-	mdiv |= (DPIO_POST_DIV_HDMIDP << DPIO_POST_DIV_SHIFT);
-	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
-
-	mdiv |= DPIO_ENABLE_CALIBRATION;
-	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
-
-	/* Set HBR and RBR LPF coefficients */
-	if (crtc->config.port_clock == 162000 ||
-	    intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_ANALOG) ||
-	    intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_HDMI))
-		vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
-				 0x009f0003);
-	else
-		vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
-				 0x00d0000f);
-
-	if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_EDP) ||
-	    intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_DISPLAYPORT)) {
-		/* Use SSC source */
-		if (!pipe)
-			vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
-					 0x0df40000);
-		else
-			vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
-					 0x0df70000);
-	} else { /* HDMI or VGA */
-		/* Use bend source */
-		if (!pipe)
-			vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
-					 0x0df70000);
-		else
-			vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
-					 0x0df40000);
-	}
-
-	coreclk = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW7(pipe));
-	coreclk = (coreclk & 0x0000ff00) | 0x01c00000;
-	if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_DISPLAYPORT) ||
-	    intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_EDP))
-		coreclk |= 0x01000000;
-	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW7(pipe), coreclk);
-
-	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW11(pipe), 0x87871000);
-
-	/*
-	 * Enable DPIO clock input. We should never disable the reference
-	 * clock for pipe B, since VGA hotplug / manual detection depends
-	 * on it.
-	 */
-	dpll = DPLL_EXT_BUFFER_ENABLE_VLV | DPLL_REFA_CLK_ENABLE_VLV |
-		DPLL_VGA_MODE_DIS | DPLL_INTEGRATED_CLOCK_VLV;
-	/* We should never disable this, set it here for state tracking */
-	if (pipe == PIPE_B)
-		dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
-	dpll |= DPLL_VCO_ENABLE;
-	crtc->config.dpll_hw_state.dpll = dpll;
-
-	dpll_md = (crtc->config.pixel_multiplier - 1)
-		<< DPLL_MD_UDI_MULTIPLIER_SHIFT;
-	crtc->config.dpll_hw_state.dpll_md = dpll_md;
-
-	mutex_unlock(&dev_priv->dpio_lock);
-}
-
-static void i9xx_update_pll(struct intel_crtc *crtc,
-			    intel_clock_t *reduced_clock,
-			    int num_connectors)
-{
-	struct drm_device *dev = crtc->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	u32 dpll;
-	bool is_sdvo;
-	struct dpll *clock = &crtc->config.dpll;
-
-	i9xx_update_pll_dividers(crtc, reduced_clock);
-
-	is_sdvo = intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_SDVO) ||
-		intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_HDMI);
-
-	dpll = DPLL_VGA_MODE_DIS;
-
-	if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_LVDS))
-		dpll |= DPLLB_MODE_LVDS;
-	else
-		dpll |= DPLLB_MODE_DAC_SERIAL;
-
-	if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
-		dpll |= (crtc->config.pixel_multiplier - 1)
-			<< SDVO_MULTIPLIER_SHIFT_HIRES;
-	}
-
-	if (is_sdvo)
-		dpll |= DPLL_SDVO_HIGH_SPEED;
-
-	if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_DISPLAYPORT))
-		dpll |= DPLL_SDVO_HIGH_SPEED;
-
-	/* compute bitmask from p1 value */
-	if (IS_PINEVIEW(dev))
-		dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
-	else {
-		dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
-		if (IS_G4X(dev) && reduced_clock)
-			dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
-	}
-	switch (clock->p2) {
-	case 5:
-		dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
-		break;
-	case 7:
-		dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
-		break;
-	case 10:
-		dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
-		break;
-	case 14:
-		dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
-		break;
-	}
-	if (INTEL_INFO(dev)->gen >= 4)
-		dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
+	*ret_m = div_u64((uint64_t) m * *ret_n, n);
+	intel_reduce_m_n_ratio(ret_m, ret_n);
+}
 
-	if (crtc->config.sdvo_tv_clock)
-		dpll |= PLL_REF_INPUT_TVCLKINBC;
-	else if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_LVDS) &&
-		 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
-		dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
-	else
-		dpll |= PLL_REF_INPUT_DREFCLK;
+void
+intel_link_compute_m_n(int bits_per_pixel, int nlanes,
+		       int pixel_clock, int link_clock,
+		       struct intel_link_m_n *m_n)
+{
+	m_n->tu = 64;
 
-	dpll |= DPLL_VCO_ENABLE;
-	crtc->config.dpll_hw_state.dpll = dpll;
+	compute_m_n(bits_per_pixel * pixel_clock,
+		    link_clock * nlanes * 8,
+		    &m_n->gmch_m, &m_n->gmch_n);
 
-	if (INTEL_INFO(dev)->gen >= 4) {
-		u32 dpll_md = (crtc->config.pixel_multiplier - 1)
-			<< DPLL_MD_UDI_MULTIPLIER_SHIFT;
-		crtc->config.dpll_hw_state.dpll_md = dpll_md;
-	}
+	compute_m_n(pixel_clock, link_clock,
+		    &m_n->link_m, &m_n->link_n);
 }
 
-static void i8xx_update_pll(struct intel_crtc *crtc,
-			    intel_clock_t *reduced_clock,
-			    int num_connectors)
+static void intel_pch_transcoder_set_m_n(struct intel_crtc *crtc,
+					 struct intel_link_m_n *m_n)
 {
 	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
-	u32 dpll;
-	struct dpll *clock = &crtc->config.dpll;
+	int pipe = crtc->pipe;
 
-	i9xx_update_pll_dividers(crtc, reduced_clock);
+	I915_WRITE(PCH_TRANS_DATA_M1(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
+	I915_WRITE(PCH_TRANS_DATA_N1(pipe), m_n->gmch_n);
+	I915_WRITE(PCH_TRANS_LINK_M1(pipe), m_n->link_m);
+	I915_WRITE(PCH_TRANS_LINK_N1(pipe), m_n->link_n);
+}
 
-	dpll = DPLL_VGA_MODE_DIS;
+static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
+					 struct intel_link_m_n *m_n)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int pipe = crtc->pipe;
+	enum transcoder transcoder = crtc->config.cpu_transcoder;
 
-	if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_LVDS)) {
-		dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+	if (INTEL_INFO(dev)->gen >= 5) {
+		I915_WRITE(PIPE_DATA_M1(transcoder), TU_SIZE(m_n->tu) | m_n->gmch_m);
+		I915_WRITE(PIPE_DATA_N1(transcoder), m_n->gmch_n);
+		I915_WRITE(PIPE_LINK_M1(transcoder), m_n->link_m);
+		I915_WRITE(PIPE_LINK_N1(transcoder), m_n->link_n);
 	} else {
-		if (clock->p1 == 2)
-			dpll |= PLL_P1_DIVIDE_BY_TWO;
-		else
-			dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
-		if (clock->p2 == 4)
-			dpll |= PLL_P2_DIVIDE_BY_4;
+		I915_WRITE(PIPE_DATA_M_G4X(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
+		I915_WRITE(PIPE_DATA_N_G4X(pipe), m_n->gmch_n);
+		I915_WRITE(PIPE_LINK_M_G4X(pipe), m_n->link_m);
+		I915_WRITE(PIPE_LINK_N_G4X(pipe), m_n->link_n);
 	}
+}
 
-	if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_DVO))
-		dpll |= DPLL_DVO_2X_MODE;
-
-	if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_LVDS) &&
-		 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
-		dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
+static void intel_dp_set_m_n(struct intel_crtc *crtc)
+{
+	if (crtc->config.has_pch_encoder)
+		intel_pch_transcoder_set_m_n(crtc, &crtc->config.dp_m_n);
 	else
-		dpll |= PLL_REF_INPUT_DREFCLK;
-
-	dpll |= DPLL_VCO_ENABLE;
-	crtc->config.dpll_hw_state.dpll = dpll;
+		intel_cpu_transcoder_set_m_n(crtc, &crtc->config.dp_m_n);
 }
 
 static void intel_set_pipe_timings(struct intel_crtc *intel_crtc)
@@ -4892,32 +3526,6 @@ static void i9xx_get_pfit_config(struct intel_crtc *crtc,
 			I915_READ(LVDS) & LVDS_BORDER_ENABLE;
 }
 
-static void vlv_crtc_clock_get(struct intel_crtc *crtc,
-			       struct intel_crtc_config *pipe_config)
-{
-	struct drm_device *dev = crtc->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	int pipe = pipe_config->cpu_transcoder;
-	intel_clock_t clock;
-	u32 mdiv;
-	int refclk = 100000;
-
-	mutex_lock(&dev_priv->dpio_lock);
-	mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe));
-	mutex_unlock(&dev_priv->dpio_lock);
-
-	clock.m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7;
-	clock.m2 = mdiv & DPIO_M2DIV_MASK;
-	clock.n = (mdiv >> DPIO_N_SHIFT) & 0xf;
-	clock.p1 = (mdiv >> DPIO_P1_SHIFT) & 7;
-	clock.p2 = (mdiv >> DPIO_P2_SHIFT) & 0x1f;
-
-	vlv_clock(refclk, &clock);
-
-	/* clock.dot is the fast clock */
-	pipe_config->port_clock = clock.dot / 5;
-}
-
 static void i9xx_get_plane_config(struct intel_crtc *crtc,
 				  struct intel_plane_config *plane_config)
 {
@@ -5407,32 +4015,6 @@ void intel_init_pch_refclk(struct drm_device *dev)
 		lpt_init_pch_refclk(dev);
 }
 
-static int ironlake_get_refclk(struct drm_crtc *crtc)
-{
-	struct drm_device *dev = crtc->dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct intel_encoder *encoder;
-	int num_connectors = 0;
-	bool is_lvds = false;
-
-	for_each_encoder_on_crtc(dev, crtc, encoder) {
-		switch (encoder->type) {
-		case INTEL_OUTPUT_LVDS:
-			is_lvds = true;
-			break;
-		}
-		num_connectors++;
-	}
-
-	if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
-		DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n",
-			      dev_priv->vbt.lvds_ssc_freq);
-		return dev_priv->vbt.lvds_ssc_freq;
-	}
-
-	return 120000;
-}
-
 static void ironlake_set_pipeconf(struct drm_crtc *crtc)
 {
 	struct drm_i915_private *dev_priv = crtc->dev->dev_private;
@@ -5654,96 +4236,6 @@ int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp)
 	return DIV_ROUND_UP(bps, link_bw * 8);
 }
 
-static bool ironlake_needs_fb_cb_tune(struct dpll *dpll, int factor)
-{
-	return i9xx_dpll_compute_m(dpll) < factor * dpll->n;
-}
-
-static uint32_t ironlake_compute_dpll(struct intel_crtc *intel_crtc,
-				      u32 *fp,
-				      intel_clock_t *reduced_clock, u32 *fp2)
-{
-	struct drm_crtc *crtc = &intel_crtc->base;
-	struct drm_device *dev = crtc->dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct intel_encoder *intel_encoder;
-	uint32_t dpll;
-	int factor, num_connectors = 0;
-	bool is_lvds = false, is_sdvo = false;
-
-	for_each_encoder_on_crtc(dev, crtc, intel_encoder) {
-		switch (intel_encoder->type) {
-		case INTEL_OUTPUT_LVDS:
-			is_lvds = true;
-			break;
-		case INTEL_OUTPUT_SDVO:
-		case INTEL_OUTPUT_HDMI:
-			is_sdvo = true;
-			break;
-		}
-
-		num_connectors++;
-	}
-
-	/* Enable autotuning of the PLL clock (if permissible) */
-	factor = 21;
-	if (is_lvds) {
-		if ((intel_panel_use_ssc(dev_priv) &&
-		     dev_priv->vbt.lvds_ssc_freq == 100000) ||
-		    (HAS_PCH_IBX(dev) && intel_is_dual_link_lvds(dev)))
-			factor = 25;
-	} else if (intel_crtc->config.sdvo_tv_clock)
-		factor = 20;
-
-	if (ironlake_needs_fb_cb_tune(&intel_crtc->config.dpll, factor))
-		*fp |= FP_CB_TUNE;
-
-	if (fp2 && (reduced_clock->m < factor * reduced_clock->n))
-		*fp2 |= FP_CB_TUNE;
-
-	dpll = 0;
-
-	if (is_lvds)
-		dpll |= DPLLB_MODE_LVDS;
-	else
-		dpll |= DPLLB_MODE_DAC_SERIAL;
-
-	dpll |= (intel_crtc->config.pixel_multiplier - 1)
-		<< PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
-
-	if (is_sdvo)
-		dpll |= DPLL_SDVO_HIGH_SPEED;
-	if (intel_crtc->config.has_dp_encoder)
-		dpll |= DPLL_SDVO_HIGH_SPEED;
-
-	/* compute bitmask from p1 value */
-	dpll |= (1 << (intel_crtc->config.dpll.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
-	/* also FPA1 */
-	dpll |= (1 << (intel_crtc->config.dpll.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
-
-	switch (intel_crtc->config.dpll.p2) {
-	case 5:
-		dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
-		break;
-	case 7:
-		dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
-		break;
-	case 10:
-		dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
-		break;
-	case 14:
-		dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
-		break;
-	}
-
-	if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
-		dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
-	else
-		dpll |= PLL_REF_INPUT_DREFCLK;
-
-	return dpll | DPLL_VCO_ENABLE;
-}
-
 static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
 				  int x, int y,
 				  struct drm_framebuffer *fb)
@@ -6732,111 +5224,6 @@ void intel_release_load_detect_pipe(struct drm_connector *connector,
 	mutex_unlock(&crtc->mutex);
 }
 
-static int i9xx_pll_refclk(struct drm_device *dev,
-			   const struct intel_crtc_config *pipe_config)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	u32 dpll = pipe_config->dpll_hw_state.dpll;
-
-	if ((dpll & PLL_REF_INPUT_MASK) == PLLB_REF_INPUT_SPREADSPECTRUMIN)
-		return dev_priv->vbt.lvds_ssc_freq;
-	else if (HAS_PCH_SPLIT(dev))
-		return 120000;
-	else if (!IS_GEN2(dev))
-		return 96000;
-	else
-		return 48000;
-}
-
-/* Returns the clock of the currently programmed mode of the given pipe. */
-static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
-				struct intel_crtc_config *pipe_config)
-{
-	struct drm_device *dev = crtc->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	int pipe = pipe_config->cpu_transcoder;
-	u32 dpll = pipe_config->dpll_hw_state.dpll;
-	u32 fp;
-	intel_clock_t clock;
-	int refclk = i9xx_pll_refclk(dev, pipe_config);
-
-	if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
-		fp = pipe_config->dpll_hw_state.fp0;
-	else
-		fp = pipe_config->dpll_hw_state.fp1;
-
-	clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
-	if (IS_PINEVIEW(dev)) {
-		clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
-		clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
-	} else {
-		clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
-		clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
-	}
-
-	if (!IS_GEN2(dev)) {
-		if (IS_PINEVIEW(dev))
-			clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
-				DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
-		else
-			clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
-			       DPLL_FPA01_P1_POST_DIV_SHIFT);
-
-		switch (dpll & DPLL_MODE_MASK) {
-		case DPLLB_MODE_DAC_SERIAL:
-			clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
-				5 : 10;
-			break;
-		case DPLLB_MODE_LVDS:
-			clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
-				7 : 14;
-			break;
-		default:
-			DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
-				  "mode\n", (int)(dpll & DPLL_MODE_MASK));
-			return;
-		}
-
-		if (IS_PINEVIEW(dev))
-			pineview_clock(refclk, &clock);
-		else
-			i9xx_clock(refclk, &clock);
-	} else {
-		u32 lvds = IS_I830(dev) ? 0 : I915_READ(LVDS);
-		bool is_lvds = (pipe == 1) && (lvds & LVDS_PORT_EN);
-
-		if (is_lvds) {
-			clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
-				       DPLL_FPA01_P1_POST_DIV_SHIFT);
-
-			if (lvds & LVDS_CLKB_POWER_UP)
-				clock.p2 = 7;
-			else
-				clock.p2 = 14;
-		} else {
-			if (dpll & PLL_P1_DIVIDE_BY_TWO)
-				clock.p1 = 2;
-			else {
-				clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
-					    DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
-			}
-			if (dpll & PLL_P2_DIVIDE_BY_4)
-				clock.p2 = 4;
-			else
-				clock.p2 = 2;
-		}
-
-		i9xx_clock(refclk, &clock);
-	}
-
-	/*
-	 * This value includes pixel_multiplier. We will use
-	 * port_clock to compute adjusted_mode.crtc_clock in the
-	 * encoder's get_config() function.
-	 */
-	pipe_config->port_clock = clock.dot;
-}
-
 int intel_dotclock_calculate(int link_freq,
 			     const struct intel_link_m_n *m_n)
 {
@@ -6856,25 +5243,6 @@ int intel_dotclock_calculate(int link_freq,
 	return div_u64((u64)m_n->link_m * link_freq, m_n->link_n);
 }
 
-static void ironlake_pch_clock_get(struct intel_crtc *crtc,
-				   struct intel_crtc_config *pipe_config)
-{
-	struct drm_device *dev = crtc->base.dev;
-
-	/* read out port_clock from the DPLL */
-	i9xx_crtc_clock_get(crtc, pipe_config);
-
-	/*
-	 * This value does not include pixel_multiplier.
-	 * We will check that port_clock and adjusted_mode.crtc_clock
-	 * agree once we know their relationship in the encoder's
-	 * get_config() function.
-	 */
-	pipe_config->adjusted_mode.crtc_clock =
-		intel_dotclock_calculate(intel_fdi_link_freq(dev) * 10000,
-					 &pipe_config->fdi_m_n);
-}
-
 /** Returns the currently programmed mode of the given pipe. */
 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
 					     struct drm_crtc *crtc)
@@ -6923,73 +5291,6 @@ struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
 	return mode;
 }
 
-static void intel_increase_pllclock(struct drm_crtc *crtc)
-{
-	struct drm_device *dev = crtc->dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	int pipe = intel_crtc->pipe;
-	int dpll_reg = DPLL(pipe);
-	int dpll;
-
-	if (HAS_PCH_SPLIT(dev))
-		return;
-
-	if (!dev_priv->lvds_downclock_avail)
-		return;
-
-	dpll = I915_READ(dpll_reg);
-	if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
-		DRM_DEBUG_DRIVER("upclocking LVDS\n");
-
-		assert_panel_unlocked(dev_priv, pipe);
-
-		dpll &= ~DISPLAY_RATE_SELECT_FPA1;
-		I915_WRITE(dpll_reg, dpll);
-		intel_wait_for_vblank(dev, pipe);
-
-		dpll = I915_READ(dpll_reg);
-		if (dpll & DISPLAY_RATE_SELECT_FPA1)
-			DRM_DEBUG_DRIVER("failed to upclock LVDS!\n");
-	}
-}
-
-static void intel_decrease_pllclock(struct drm_crtc *crtc)
-{
-	struct drm_device *dev = crtc->dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-
-	if (HAS_PCH_SPLIT(dev))
-		return;
-
-	if (!dev_priv->lvds_downclock_avail)
-		return;
-
-	/*
-	 * Since this is called by a timer, we should never get here in
-	 * the manual case.
-	 */
-	if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
-		int pipe = intel_crtc->pipe;
-		int dpll_reg = DPLL(pipe);
-		int dpll;
-
-		DRM_DEBUG_DRIVER("downclocking LVDS\n");
-
-		assert_panel_unlocked(dev_priv, pipe);
-
-		dpll = I915_READ(dpll_reg);
-		dpll |= DISPLAY_RATE_SELECT_FPA1;
-		I915_WRITE(dpll_reg, dpll);
-		intel_wait_for_vblank(dev, pipe);
-		dpll = I915_READ(dpll_reg);
-		if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
-			DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
-	}
-
-}
-
 void intel_mark_busy(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
@@ -9031,107 +7332,6 @@ static const struct drm_crtc_funcs intel_crtc_funcs = {
 	.page_flip = intel_crtc_page_flip,
 };
 
-static void intel_cpu_pll_init(struct drm_device *dev)
-{
-	if (HAS_DDI(dev))
-		intel_ddi_pll_init(dev);
-}
-
-static bool ibx_pch_dpll_get_hw_state(struct drm_i915_private *dev_priv,
-				      struct intel_shared_dpll *pll,
-				      struct intel_dpll_hw_state *hw_state)
-{
-	uint32_t val;
-
-	val = I915_READ(PCH_DPLL(pll->id));
-	hw_state->dpll = val;
-	hw_state->fp0 = I915_READ(PCH_FP0(pll->id));
-	hw_state->fp1 = I915_READ(PCH_FP1(pll->id));
-
-	return val & DPLL_VCO_ENABLE;
-}
-
-static void ibx_pch_dpll_mode_set(struct drm_i915_private *dev_priv,
-				  struct intel_shared_dpll *pll)
-{
-	I915_WRITE(PCH_FP0(pll->id), pll->hw_state.fp0);
-	I915_WRITE(PCH_FP1(pll->id), pll->hw_state.fp1);
-}
-
-static void ibx_pch_dpll_enable(struct drm_i915_private *dev_priv,
-				struct intel_shared_dpll *pll)
-{
-	/* PCH refclock must be enabled first */
-	ibx_assert_pch_refclk_enabled(dev_priv);
-
-	I915_WRITE(PCH_DPLL(pll->id), pll->hw_state.dpll);
-
-	/* Wait for the clocks to stabilize. */
-	POSTING_READ(PCH_DPLL(pll->id));
-	udelay(150);
-
-	/* The pixel multiplier can only be updated once the
-	 * DPLL is enabled and the clocks are stable.
-	 *
-	 * So write it again.
-	 */
-	I915_WRITE(PCH_DPLL(pll->id), pll->hw_state.dpll);
-	POSTING_READ(PCH_DPLL(pll->id));
-	udelay(200);
-}
-
-static void ibx_pch_dpll_disable(struct drm_i915_private *dev_priv,
-				 struct intel_shared_dpll *pll)
-{
-	struct drm_device *dev = dev_priv->dev;
-	struct intel_crtc *crtc;
-
-	/* Make sure no transcoder isn't still depending on us. */
-	list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
-		if (intel_crtc_to_shared_dpll(crtc) == pll)
-			assert_pch_transcoder_disabled(dev_priv, crtc->pipe);
-	}
-
-	I915_WRITE(PCH_DPLL(pll->id), 0);
-	POSTING_READ(PCH_DPLL(pll->id));
-	udelay(200);
-}
-
-static char *ibx_pch_dpll_names[] = {
-	"PCH DPLL A",
-	"PCH DPLL B",
-};
-
-static void ibx_pch_dpll_init(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	int i;
-
-	dev_priv->num_shared_dpll = 2;
-
-	for (i = 0; i < dev_priv->num_shared_dpll; i++) {
-		dev_priv->shared_dplls[i].id = i;
-		dev_priv->shared_dplls[i].name = ibx_pch_dpll_names[i];
-		dev_priv->shared_dplls[i].mode_set = ibx_pch_dpll_mode_set;
-		dev_priv->shared_dplls[i].enable = ibx_pch_dpll_enable;
-		dev_priv->shared_dplls[i].disable = ibx_pch_dpll_disable;
-		dev_priv->shared_dplls[i].get_hw_state =
-			ibx_pch_dpll_get_hw_state;
-	}
-}
-
-static void intel_shared_dpll_init(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-
-	if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
-		ibx_pch_dpll_init(dev);
-	else
-		dev_priv->num_shared_dpll = 0;
-
-	BUG_ON(dev_priv->num_shared_dpll > I915_NUM_PLLS);
-}
-
 static void intel_crtc_init(struct drm_device *dev, int pipe)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
@@ -9561,15 +7761,6 @@ static void intel_init_display(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
-	if (HAS_PCH_SPLIT(dev) || IS_G4X(dev))
-		dev_priv->display.find_dpll = g4x_find_best_dpll;
-	else if (IS_VALLEYVIEW(dev))
-		dev_priv->display.find_dpll = vlv_find_best_dpll;
-	else if (IS_PINEVIEW(dev))
-		dev_priv->display.find_dpll = pnv_find_best_dpll;
-	else
-		dev_priv->display.find_dpll = i9xx_find_best_dpll;
-
 	if (HAS_DDI(dev)) {
 		dev_priv->display.get_pipe_config = haswell_get_pipe_config;
 		dev_priv->display.get_plane_config = ironlake_get_plane_config;
@@ -9652,6 +7843,7 @@ static void intel_init_display(struct drm_device *dev)
 			valleyview_modeset_global_resources;
 	}
 
+	intel_pll_init(dev_priv);
 	intel_fdi_init(dev_priv);
 	intel_eld_init(dev_priv);
 
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 013ddf5..aa93f1a 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -728,16 +728,6 @@ __intel_framebuffer_create(struct drm_device *dev,
 void intel_prepare_page_flip(struct drm_device *dev, int plane);
 void intel_finish_page_flip(struct drm_device *dev, int pipe);
 void intel_finish_page_flip_plane(struct drm_device *dev, int plane);
-struct intel_shared_dpll *intel_crtc_to_shared_dpll(struct intel_crtc *crtc);
-void assert_shared_dpll(struct drm_i915_private *dev_priv,
-			struct intel_shared_dpll *pll,
-			bool state);
-#define assert_shared_dpll_enabled(d, p) assert_shared_dpll(d, p, true)
-#define assert_shared_dpll_disabled(d, p) assert_shared_dpll(d, p, false)
-void assert_pll(struct drm_i915_private *dev_priv,
-		enum pipe pipe, bool state);
-#define assert_pll_enabled(d, p) assert_pll(d, p, true)
-#define assert_pll_disabled(d, p) assert_pll(d, p, false)
 void assert_pipe(struct drm_i915_private *dev_priv, enum pipe pipe, bool state);
 #define assert_pipe_enabled(d, p) assert_pipe(d, p, true)
 #define assert_pipe_disabled(d, p) assert_pipe(d, p, false)
@@ -770,6 +760,9 @@ void intel_mode_from_pipe_config(struct drm_display_mode *mode,
 int intel_format_to_fourcc(int format);
 bool intel_pipe_has_type(struct drm_crtc *crtc, int type);
 bool need_vtd_wa(struct drm_device *dev);
+void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
+				    enum pipe pipe);
+
 
 /* intel_dp.c */
 void intel_dp_init(struct drm_device *dev, int output_reg, enum port port);
@@ -926,6 +919,70 @@ extern struct drm_display_mode *intel_find_panel_downclock(
 				struct drm_device *dev,
 				struct drm_display_mode *fixed_mode,
 				struct drm_connector *connector);
+bool intel_panel_use_ssc(struct drm_i915_private *dev_priv);
+void assert_panel_unlocked(struct drm_i915_private *dev_priv, enum pipe pipe);
+
+
+/* intel_pll.c */
+typedef struct {
+	int min, max;
+} intel_range_t;
+
+typedef struct {
+	int dot_limit;
+	int p2_slow, p2_fast;
+} intel_p2_t;
+
+typedef struct intel_limit intel_limit_t;
+struct intel_limit {
+	intel_range_t dot, vco, n, m, m1, m2, p, p1;
+	intel_p2_t p2;
+};
+
+const intel_limit_t *intel_limit(struct drm_crtc *crtc, int refclk);
+void vlv_crtc_clock_get(struct intel_crtc *crtc,
+			struct intel_crtc_config *pipe_config);
+void i9xx_crtc_clock_get(struct intel_crtc *crtc,
+			 struct intel_crtc_config *pipe_config);
+void ironlake_pch_clock_get(struct intel_crtc *crtc,
+			    struct intel_crtc_config *pipe_config);
+uint32_t ironlake_compute_dpll(struct intel_crtc *intel_crtc,
+			       u32 *fp, intel_clock_t *reduced_clock, u32 *fp2);
+int i9xx_get_refclk(struct drm_crtc *crtc, int num_connectors);
+int ironlake_get_refclk(struct drm_crtc *crtc);
+void intel_pll_init(struct drm_i915_private *dev_priv);
+void assert_pll(struct drm_i915_private *dev_priv,
+		enum pipe pipe, bool state);
+#define assert_pll_enabled(d, p) assert_pll(d, p, true)
+#define assert_pll_disabled(d, p) assert_pll(d, p, false)
+void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state);
+#define assert_dsi_pll_enabled(d) assert_dsi_pll(d, true)
+#define assert_dsi_pll_disabled(d) assert_dsi_pll(d, false)
+struct intel_shared_dpll *intel_crtc_to_shared_dpll(struct intel_crtc *crtc);
+void assert_shared_dpll(struct drm_i915_private *dev_priv,
+			struct intel_shared_dpll *pll,
+			bool state);
+#define assert_shared_dpll_enabled(d, p) assert_shared_dpll(d, p, true)
+#define assert_shared_dpll_disabled(d, p) assert_shared_dpll(d, p, false)
+void ironlake_enable_shared_dpll(struct intel_crtc *crtc);
+void intel_disable_shared_dpll(struct intel_crtc *crtc);
+void intel_put_shared_dpll(struct intel_crtc *crtc);
+struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc);
+void intel_increase_pllclock(struct drm_crtc *crtc);
+void intel_decrease_pllclock(struct drm_crtc *crtc);
+void vlv_enable_pll(struct intel_crtc *crtc);
+void i9xx_enable_pll(struct intel_crtc *crtc);
+void i9xx_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe);
+void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe);
+void vlv_update_pll(struct intel_crtc *crtc);
+void i9xx_update_pll(struct intel_crtc *crtc, intel_clock_t *reduced_clock,
+		     int num_connectors);
+void i8xx_update_pll(struct intel_crtc *crtc, intel_clock_t *reduced_clock,
+		     int num_connectors);
+uint32_t i9xx_dpll_compute_fp(struct dpll *dpll);
+void intel_cpu_pll_init(struct drm_device *dev);
+void intel_shared_dpll_init(struct drm_device *dev);
+
 
 /* intel_pm.c */
 void intel_init_clock_gating(struct drm_device *dev);
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index cb05840..ec764e3 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -1189,6 +1189,42 @@ void intel_panel_init_backlight_funcs(struct drm_device *dev)
 	}
 }
 
+bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
+{
+	if (i915.panel_use_ssc >= 0)
+		return i915.panel_use_ssc != 0;
+	return dev_priv->vbt.lvds_use_ssc
+		&& !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
+}
+
+void assert_panel_unlocked(struct drm_i915_private *dev_priv, enum pipe pipe)
+{
+	int pp_reg, lvds_reg;
+	u32 val;
+	enum pipe panel_pipe = PIPE_A;
+	bool locked = true;
+
+	if (HAS_PCH_SPLIT(dev_priv->dev)) {
+		pp_reg = PCH_PP_CONTROL;
+		lvds_reg = PCH_LVDS;
+	} else {
+		pp_reg = PP_CONTROL;
+		lvds_reg = LVDS;
+	}
+
+	val = I915_READ(pp_reg);
+	if (!(val & PANEL_POWER_ON) ||
+	    ((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS))
+		locked = false;
+
+	if (I915_READ(lvds_reg) & LVDS_PIPEB_SELECT)
+		panel_pipe = PIPE_B;
+
+	WARN(panel_pipe == pipe && locked,
+	     "panel assertion failure, pipe %c regs locked\n",
+	     pipe_name(pipe));
+}
+
 int intel_panel_init(struct intel_panel *panel,
 		     struct drm_display_mode *fixed_mode,
 		     struct drm_display_mode *downclock_mode)
diff --git a/drivers/gpu/drm/i915/intel_pll.c b/drivers/gpu/drm/i915/intel_pll.c
new file mode 100644
index 0000000..fed6ba7
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_pll.c
@@ -0,0 +1,1779 @@
+/*
+ * Copyright © 2006-2007, 2014 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *	Eric Anholt <eric@anholt.net>
+ */
+
+#include "intel_drv.h"
+
+static const intel_limit_t intel_limits_i8xx_dac = {
+	.dot = { .min = 25000, .max = 350000 },
+	.vco = { .min = 908000, .max = 1512000 },
+	.n = { .min = 2, .max = 16 },
+	.m = { .min = 96, .max = 140 },
+	.m1 = { .min = 18, .max = 26 },
+	.m2 = { .min = 6, .max = 16 },
+	.p = { .min = 4, .max = 128 },
+	.p1 = { .min = 2, .max = 33 },
+	.p2 = { .dot_limit = 165000,
+		.p2_slow = 4, .p2_fast = 2 },
+};
+
+static const intel_limit_t intel_limits_i8xx_dvo = {
+	.dot = { .min = 25000, .max = 350000 },
+	.vco = { .min = 908000, .max = 1512000 },
+	.n = { .min = 2, .max = 16 },
+	.m = { .min = 96, .max = 140 },
+	.m1 = { .min = 18, .max = 26 },
+	.m2 = { .min = 6, .max = 16 },
+	.p = { .min = 4, .max = 128 },
+	.p1 = { .min = 2, .max = 33 },
+	.p2 = { .dot_limit = 165000,
+		.p2_slow = 4, .p2_fast = 4 },
+};
+
+static const intel_limit_t intel_limits_i8xx_lvds = {
+	.dot = { .min = 25000, .max = 350000 },
+	.vco = { .min = 908000, .max = 1512000 },
+	.n = { .min = 2, .max = 16 },
+	.m = { .min = 96, .max = 140 },
+	.m1 = { .min = 18, .max = 26 },
+	.m2 = { .min = 6, .max = 16 },
+	.p = { .min = 4, .max = 128 },
+	.p1 = { .min = 1, .max = 6 },
+	.p2 = { .dot_limit = 165000,
+		.p2_slow = 14, .p2_fast = 7 },
+};
+
+static const intel_limit_t intel_limits_i9xx_sdvo = {
+	.dot = { .min = 20000, .max = 400000 },
+	.vco = { .min = 1400000, .max = 2800000 },
+	.n = { .min = 1, .max = 6 },
+	.m = { .min = 70, .max = 120 },
+	.m1 = { .min = 8, .max = 18 },
+	.m2 = { .min = 3, .max = 7 },
+	.p = { .min = 5, .max = 80 },
+	.p1 = { .min = 1, .max = 8 },
+	.p2 = { .dot_limit = 200000,
+		.p2_slow = 10, .p2_fast = 5 },
+};
+
+static const intel_limit_t intel_limits_i9xx_lvds = {
+	.dot = { .min = 20000, .max = 400000 },
+	.vco = { .min = 1400000, .max = 2800000 },
+	.n = { .min = 1, .max = 6 },
+	.m = { .min = 70, .max = 120 },
+	.m1 = { .min = 8, .max = 18 },
+	.m2 = { .min = 3, .max = 7 },
+	.p = { .min = 7, .max = 98 },
+	.p1 = { .min = 1, .max = 8 },
+	.p2 = { .dot_limit = 112000,
+		.p2_slow = 14, .p2_fast = 7 },
+};
+
+
+static const intel_limit_t intel_limits_g4x_sdvo = {
+	.dot = { .min = 25000, .max = 270000 },
+	.vco = { .min = 1750000, .max = 3500000},
+	.n = { .min = 1, .max = 4 },
+	.m = { .min = 104, .max = 138 },
+	.m1 = { .min = 17, .max = 23 },
+	.m2 = { .min = 5, .max = 11 },
+	.p = { .min = 10, .max = 30 },
+	.p1 = { .min = 1, .max = 3},
+	.p2 = { .dot_limit = 270000,
+		.p2_slow = 10,
+		.p2_fast = 10
+	},
+};
+
+static const intel_limit_t intel_limits_g4x_hdmi = {
+	.dot = { .min = 22000, .max = 400000 },
+	.vco = { .min = 1750000, .max = 3500000},
+	.n = { .min = 1, .max = 4 },
+	.m = { .min = 104, .max = 138 },
+	.m1 = { .min = 16, .max = 23 },
+	.m2 = { .min = 5, .max = 11 },
+	.p = { .min = 5, .max = 80 },
+	.p1 = { .min = 1, .max = 8},
+	.p2 = { .dot_limit = 165000,
+		.p2_slow = 10, .p2_fast = 5 },
+};
+
+static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
+	.dot = { .min = 20000, .max = 115000 },
+	.vco = { .min = 1750000, .max = 3500000 },
+	.n = { .min = 1, .max = 3 },
+	.m = { .min = 104, .max = 138 },
+	.m1 = { .min = 17, .max = 23 },
+	.m2 = { .min = 5, .max = 11 },
+	.p = { .min = 28, .max = 112 },
+	.p1 = { .min = 2, .max = 8 },
+	.p2 = { .dot_limit = 0,
+		.p2_slow = 14, .p2_fast = 14
+	},
+};
+
+static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
+	.dot = { .min = 80000, .max = 224000 },
+	.vco = { .min = 1750000, .max = 3500000 },
+	.n = { .min = 1, .max = 3 },
+	.m = { .min = 104, .max = 138 },
+	.m1 = { .min = 17, .max = 23 },
+	.m2 = { .min = 5, .max = 11 },
+	.p = { .min = 14, .max = 42 },
+	.p1 = { .min = 2, .max = 6 },
+	.p2 = { .dot_limit = 0,
+		.p2_slow = 7, .p2_fast = 7
+	},
+};
+
+static const intel_limit_t intel_limits_pineview_sdvo = {
+	.dot = { .min = 20000, .max = 400000},
+	.vco = { .min = 1700000, .max = 3500000 },
+	/* Pineview's Ncounter is a ring counter */
+	.n = { .min = 3, .max = 6 },
+	.m = { .min = 2, .max = 256 },
+	/* Pineview only has one combined m divider, which we treat as m2. */
+	.m1 = { .min = 0, .max = 0 },
+	.m2 = { .min = 0, .max = 254 },
+	.p = { .min = 5, .max = 80 },
+	.p1 = { .min = 1, .max = 8 },
+	.p2 = { .dot_limit = 200000,
+		.p2_slow = 10, .p2_fast = 5 },
+};
+
+static const intel_limit_t intel_limits_pineview_lvds = {
+	.dot = { .min = 20000, .max = 400000 },
+	.vco = { .min = 1700000, .max = 3500000 },
+	.n = { .min = 3, .max = 6 },
+	.m = { .min = 2, .max = 256 },
+	.m1 = { .min = 0, .max = 0 },
+	.m2 = { .min = 0, .max = 254 },
+	.p = { .min = 7, .max = 112 },
+	.p1 = { .min = 1, .max = 8 },
+	.p2 = { .dot_limit = 112000,
+		.p2_slow = 14, .p2_fast = 14 },
+};
+
+/* Ironlake / Sandybridge
+ *
+ * We calculate clock using (register_value + 2) for N/M1/M2, so here
+ * the range value for them is (actual_value - 2).
+ */
+static const intel_limit_t intel_limits_ironlake_dac = {
+	.dot = { .min = 25000, .max = 350000 },
+	.vco = { .min = 1760000, .max = 3510000 },
+	.n = { .min = 1, .max = 5 },
+	.m = { .min = 79, .max = 127 },
+	.m1 = { .min = 12, .max = 22 },
+	.m2 = { .min = 5, .max = 9 },
+	.p = { .min = 5, .max = 80 },
+	.p1 = { .min = 1, .max = 8 },
+	.p2 = { .dot_limit = 225000,
+		.p2_slow = 10, .p2_fast = 5 },
+};
+
+static const intel_limit_t intel_limits_ironlake_single_lvds = {
+	.dot = { .min = 25000, .max = 350000 },
+	.vco = { .min = 1760000, .max = 3510000 },
+	.n = { .min = 1, .max = 3 },
+	.m = { .min = 79, .max = 118 },
+	.m1 = { .min = 12, .max = 22 },
+	.m2 = { .min = 5, .max = 9 },
+	.p = { .min = 28, .max = 112 },
+	.p1 = { .min = 2, .max = 8 },
+	.p2 = { .dot_limit = 225000,
+		.p2_slow = 14, .p2_fast = 14 },
+};
+
+static const intel_limit_t intel_limits_ironlake_dual_lvds = {
+	.dot = { .min = 25000, .max = 350000 },
+	.vco = { .min = 1760000, .max = 3510000 },
+	.n = { .min = 1, .max = 3 },
+	.m = { .min = 79, .max = 127 },
+	.m1 = { .min = 12, .max = 22 },
+	.m2 = { .min = 5, .max = 9 },
+	.p = { .min = 14, .max = 56 },
+	.p1 = { .min = 2, .max = 8 },
+	.p2 = { .dot_limit = 225000,
+		.p2_slow = 7, .p2_fast = 7 },
+};
+
+/* LVDS 100mhz refclk limits. */
+static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
+	.dot = { .min = 25000, .max = 350000 },
+	.vco = { .min = 1760000, .max = 3510000 },
+	.n = { .min = 1, .max = 2 },
+	.m = { .min = 79, .max = 126 },
+	.m1 = { .min = 12, .max = 22 },
+	.m2 = { .min = 5, .max = 9 },
+	.p = { .min = 28, .max = 112 },
+	.p1 = { .min = 2, .max = 8 },
+	.p2 = { .dot_limit = 225000,
+		.p2_slow = 14, .p2_fast = 14 },
+};
+
+static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
+	.dot = { .min = 25000, .max = 350000 },
+	.vco = { .min = 1760000, .max = 3510000 },
+	.n = { .min = 1, .max = 3 },
+	.m = { .min = 79, .max = 126 },
+	.m1 = { .min = 12, .max = 22 },
+	.m2 = { .min = 5, .max = 9 },
+	.p = { .min = 14, .max = 42 },
+	.p1 = { .min = 2, .max = 6 },
+	.p2 = { .dot_limit = 225000,
+		.p2_slow = 7, .p2_fast = 7 },
+};
+
+static const intel_limit_t intel_limits_vlv = {
+	 /*
+	  * These are the data rate limits (measured in fast clocks)
+	  * since those are the strictest limits we have. The fast
+	  * clock and actual rate limits are more relaxed, so checking
+	  * them would make no difference.
+	  */
+	.dot = { .min = 25000 * 5, .max = 270000 * 5 },
+	.vco = { .min = 4000000, .max = 6000000 },
+	.n = { .min = 1, .max = 7 },
+	.m1 = { .min = 2, .max = 3 },
+	.m2 = { .min = 11, .max = 156 },
+	.p1 = { .min = 2, .max = 3 },
+	.p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
+};
+
+static const intel_limit_t *intel_ironlake_limit(struct drm_crtc *crtc,
+						int refclk)
+{
+	struct drm_device *dev = crtc->dev;
+	const intel_limit_t *limit;
+
+	if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
+		if (intel_is_dual_link_lvds(dev)) {
+			if (refclk == 100000)
+				limit = &intel_limits_ironlake_dual_lvds_100m;
+			else
+				limit = &intel_limits_ironlake_dual_lvds;
+		} else {
+			if (refclk == 100000)
+				limit = &intel_limits_ironlake_single_lvds_100m;
+			else
+				limit = &intel_limits_ironlake_single_lvds;
+		}
+	} else
+		limit = &intel_limits_ironlake_dac;
+
+	return limit;
+}
+
+static const intel_limit_t *intel_g4x_limit(struct drm_crtc *crtc)
+{
+	struct drm_device *dev = crtc->dev;
+	const intel_limit_t *limit;
+
+	if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
+		if (intel_is_dual_link_lvds(dev))
+			limit = &intel_limits_g4x_dual_channel_lvds;
+		else
+			limit = &intel_limits_g4x_single_channel_lvds;
+	} else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI) ||
+		   intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG)) {
+		limit = &intel_limits_g4x_hdmi;
+	} else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO)) {
+		limit = &intel_limits_g4x_sdvo;
+	} else /* The option is for other outputs */
+		limit = &intel_limits_i9xx_sdvo;
+
+	return limit;
+}
+
+const intel_limit_t *intel_limit(struct drm_crtc *crtc, int refclk)
+{
+	struct drm_device *dev = crtc->dev;
+	const intel_limit_t *limit;
+
+	if (HAS_PCH_SPLIT(dev))
+		limit = intel_ironlake_limit(crtc, refclk);
+	else if (IS_G4X(dev)) {
+		limit = intel_g4x_limit(crtc);
+	} else if (IS_PINEVIEW(dev)) {
+		if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
+			limit = &intel_limits_pineview_lvds;
+		else
+			limit = &intel_limits_pineview_sdvo;
+	} else if (IS_VALLEYVIEW(dev)) {
+		limit = &intel_limits_vlv;
+	} else if (!IS_GEN2(dev)) {
+		if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
+			limit = &intel_limits_i9xx_lvds;
+		else
+			limit = &intel_limits_i9xx_sdvo;
+	} else {
+		if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
+			limit = &intel_limits_i8xx_lvds;
+		else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO))
+			limit = &intel_limits_i8xx_dvo;
+		else
+			limit = &intel_limits_i8xx_dac;
+	}
+	return limit;
+}
+
+#define INTELPllInvalid(s)   do { /* DRM_DEBUG(s); */ return false; } while (0)
+
+/**
+ * Returns whether the given set of divisors are valid for a given refclk with
+ * the given connectors.
+ */
+static bool intel_PLL_is_valid(struct drm_device *dev,
+			       const intel_limit_t *limit,
+			       const intel_clock_t *clock)
+{
+	if (clock->n   < limit->n.min   || limit->n.max   < clock->n)
+		INTELPllInvalid("n out of range\n");
+	if (clock->p1  < limit->p1.min  || limit->p1.max  < clock->p1)
+		INTELPllInvalid("p1 out of range\n");
+	if (clock->m2  < limit->m2.min  || limit->m2.max  < clock->m2)
+		INTELPllInvalid("m2 out of range\n");
+	if (clock->m1  < limit->m1.min  || limit->m1.max  < clock->m1)
+		INTELPllInvalid("m1 out of range\n");
+
+	if (!IS_PINEVIEW(dev) && !IS_VALLEYVIEW(dev))
+		if (clock->m1 <= clock->m2)
+			INTELPllInvalid("m1 <= m2\n");
+
+	if (!IS_VALLEYVIEW(dev)) {
+		if (clock->p < limit->p.min || limit->p.max < clock->p)
+			INTELPllInvalid("p out of range\n");
+		if (clock->m < limit->m.min || limit->m.max < clock->m)
+			INTELPllInvalid("m out of range\n");
+	}
+
+	if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
+		INTELPllInvalid("vco out of range\n");
+	/* XXX: We may need to be checking "Dot clock" depending on the multiplier,
+	 * connector, etc., rather than just a single range.
+	 */
+	if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
+		INTELPllInvalid("dot out of range\n");
+
+	return true;
+}
+
+static uint32_t i9xx_dpll_compute_m(struct dpll *dpll)
+{
+	return 5 * (dpll->m1 + 2) + (dpll->m2 + 2);
+}
+
+static void i9xx_clock(int refclk, intel_clock_t *clock)
+{
+	clock->m = i9xx_dpll_compute_m(clock);
+	clock->p = clock->p1 * clock->p2;
+	if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
+		return;
+	clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);
+	clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
+}
+
+/* m1 is reserved as 0 in Pineview, n is a ring counter */
+static void pineview_clock(int refclk, intel_clock_t *clock)
+{
+	clock->m = clock->m2 + 2;
+	clock->p = clock->p1 * clock->p2;
+	if (WARN_ON(clock->n == 0 || clock->p == 0))
+		return;
+	clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
+	clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
+}
+
+static void vlv_clock(int refclk, intel_clock_t *clock)
+{
+	clock->m = clock->m1 * clock->m2;
+	clock->p = clock->p1 * clock->p2;
+	if (WARN_ON(clock->n == 0 || clock->p == 0))
+		return;
+	clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
+	clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
+}
+
+static bool
+g4x_find_best_dpll(const intel_limit_t *limit, struct drm_crtc *crtc,
+		   int target, int refclk, intel_clock_t *match_clock,
+		   intel_clock_t *best_clock)
+{
+	struct drm_device *dev = crtc->dev;
+	intel_clock_t clock;
+	int max_n;
+	bool found;
+	/* approximately equals target * 0.00585 */
+	int err_most = (target >> 8) + (target >> 9);
+	found = false;
+
+	if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
+		if (intel_is_dual_link_lvds(dev))
+			clock.p2 = limit->p2.p2_fast;
+		else
+			clock.p2 = limit->p2.p2_slow;
+	} else {
+		if (target < limit->p2.dot_limit)
+			clock.p2 = limit->p2.p2_slow;
+		else
+			clock.p2 = limit->p2.p2_fast;
+	}
+
+	memset(best_clock, 0, sizeof(*best_clock));
+	max_n = limit->n.max;
+	/* based on hardware requirement, prefer smaller n to precision */
+	for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
+		/* based on hardware requirement, prefere larger m1,m2 */
+		for (clock.m1 = limit->m1.max;
+		     clock.m1 >= limit->m1.min; clock.m1--) {
+			for (clock.m2 = limit->m2.max;
+			     clock.m2 >= limit->m2.min; clock.m2--) {
+				for (clock.p1 = limit->p1.max;
+				     clock.p1 >= limit->p1.min; clock.p1--) {
+					int this_err;
+
+					i9xx_clock(refclk, &clock);
+					if (!intel_PLL_is_valid(dev, limit,
+								&clock))
+						continue;
+
+					this_err = abs(clock.dot - target);
+					if (this_err < err_most) {
+						*best_clock = clock;
+						err_most = this_err;
+						max_n = clock.n;
+						found = true;
+					}
+				}
+			}
+		}
+	}
+	return found;
+}
+
+static bool
+vlv_find_best_dpll(const intel_limit_t *limit, struct drm_crtc *crtc,
+		   int target, int refclk, intel_clock_t *match_clock,
+		   intel_clock_t *best_clock)
+{
+	struct drm_device *dev = crtc->dev;
+	intel_clock_t clock;
+	unsigned int bestppm = 1000000;
+	/* min update 19.2 MHz */
+	int max_n = min(limit->n.max, refclk / 19200);
+	bool found = false;
+
+	target *= 5; /* fast clock */
+
+	memset(best_clock, 0, sizeof(*best_clock));
+
+	/* based on hardware requirement, prefer smaller n to precision */
+	for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
+		for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
+			for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow;
+			     clock.p2 -= clock.p2 > 10 ? 2 : 1) {
+				clock.p = clock.p1 * clock.p2;
+				/* based on hardware requirement, prefer bigger m1,m2 values */
+				for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
+					unsigned int ppm, diff;
+
+					clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n,
+								     refclk * clock.m1);
+
+					vlv_clock(refclk, &clock);
+
+					if (!intel_PLL_is_valid(dev, limit,
+								&clock))
+						continue;
+
+					diff = abs(clock.dot - target);
+					ppm = div_u64(1000000ULL * diff, target);
+
+					if (ppm < 100 && clock.p > best_clock->p) {
+						bestppm = 0;
+						*best_clock = clock;
+						found = true;
+					}
+
+					if (bestppm >= 10 && ppm < bestppm - 10) {
+						bestppm = ppm;
+						*best_clock = clock;
+						found = true;
+					}
+				}
+			}
+		}
+	}
+
+	return found;
+}
+
+static bool
+pnv_find_best_dpll(const intel_limit_t *limit, struct drm_crtc *crtc,
+		   int target, int refclk, intel_clock_t *match_clock,
+		   intel_clock_t *best_clock)
+{
+	struct drm_device *dev = crtc->dev;
+	intel_clock_t clock;
+	int err = target;
+
+	if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
+		/*
+		 * For LVDS just rely on its current settings for dual-channel.
+		 * We haven't figured out how to reliably set up different
+		 * single/dual channel state, if we even can.
+		 */
+		if (intel_is_dual_link_lvds(dev))
+			clock.p2 = limit->p2.p2_fast;
+		else
+			clock.p2 = limit->p2.p2_slow;
+	} else {
+		if (target < limit->p2.dot_limit)
+			clock.p2 = limit->p2.p2_slow;
+		else
+			clock.p2 = limit->p2.p2_fast;
+	}
+
+	memset(best_clock, 0, sizeof(*best_clock));
+
+	for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
+	     clock.m1++) {
+		for (clock.m2 = limit->m2.min;
+		     clock.m2 <= limit->m2.max; clock.m2++) {
+			for (clock.n = limit->n.min;
+			     clock.n <= limit->n.max; clock.n++) {
+				for (clock.p1 = limit->p1.min;
+					clock.p1 <= limit->p1.max; clock.p1++) {
+					int this_err;
+
+					pineview_clock(refclk, &clock);
+					if (!intel_PLL_is_valid(dev, limit,
+								&clock))
+						continue;
+					if (match_clock &&
+					    clock.p != match_clock->p)
+						continue;
+
+					this_err = abs(clock.dot - target);
+					if (this_err < err) {
+						*best_clock = clock;
+						err = this_err;
+					}
+				}
+			}
+		}
+	}
+
+	return (err != target);
+}
+
+static bool
+i9xx_find_best_dpll(const intel_limit_t *limit, struct drm_crtc *crtc,
+		    int target, int refclk, intel_clock_t *match_clock,
+		    intel_clock_t *best_clock)
+{
+	struct drm_device *dev = crtc->dev;
+	intel_clock_t clock;
+	int err = target;
+
+	if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
+		/*
+		 * For LVDS just rely on its current settings for dual-channel.
+		 * We haven't figured out how to reliably set up different
+		 * single/dual channel state, if we even can.
+		 */
+		if (intel_is_dual_link_lvds(dev))
+			clock.p2 = limit->p2.p2_fast;
+		else
+			clock.p2 = limit->p2.p2_slow;
+	} else {
+		if (target < limit->p2.dot_limit)
+			clock.p2 = limit->p2.p2_slow;
+		else
+			clock.p2 = limit->p2.p2_fast;
+	}
+
+	memset(best_clock, 0, sizeof(*best_clock));
+
+	for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
+	     clock.m1++) {
+		for (clock.m2 = limit->m2.min;
+		     clock.m2 <= limit->m2.max; clock.m2++) {
+			if (clock.m2 >= clock.m1)
+				break;
+			for (clock.n = limit->n.min;
+			     clock.n <= limit->n.max; clock.n++) {
+				for (clock.p1 = limit->p1.min;
+					clock.p1 <= limit->p1.max; clock.p1++) {
+					int this_err;
+
+					i9xx_clock(refclk, &clock);
+					if (!intel_PLL_is_valid(dev, limit,
+								&clock))
+						continue;
+					if (match_clock &&
+					    clock.p != match_clock->p)
+						continue;
+
+					this_err = abs(clock.dot - target);
+					if (this_err < err) {
+						*best_clock = clock;
+						err = this_err;
+					}
+				}
+			}
+		}
+	}
+
+	return (err != target);
+}
+
+static int i9xx_pll_refclk(struct drm_device *dev,
+			   const struct intel_crtc_config *pipe_config)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	u32 dpll = pipe_config->dpll_hw_state.dpll;
+
+	if ((dpll & PLL_REF_INPUT_MASK) == PLLB_REF_INPUT_SPREADSPECTRUMIN)
+		return dev_priv->vbt.lvds_ssc_freq;
+	else if (HAS_PCH_SPLIT(dev))
+		return 120000;
+	else if (!IS_GEN2(dev))
+		return 96000;
+	else
+		return 48000;
+}
+
+/* Returns the clock of the currently programmed mode of the given pipe. */
+void i9xx_crtc_clock_get(struct intel_crtc *crtc,
+			 struct intel_crtc_config *pipe_config)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int pipe = pipe_config->cpu_transcoder;
+	u32 dpll = pipe_config->dpll_hw_state.dpll;
+	u32 fp;
+	intel_clock_t clock;
+	int refclk = i9xx_pll_refclk(dev, pipe_config);
+
+	if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
+		fp = pipe_config->dpll_hw_state.fp0;
+	else
+		fp = pipe_config->dpll_hw_state.fp1;
+
+	clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
+	if (IS_PINEVIEW(dev)) {
+		clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
+		clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
+	} else {
+		clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
+		clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
+	}
+
+	if (!IS_GEN2(dev)) {
+		if (IS_PINEVIEW(dev))
+			clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
+				DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
+		else
+			clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
+			       DPLL_FPA01_P1_POST_DIV_SHIFT);
+
+		switch (dpll & DPLL_MODE_MASK) {
+		case DPLLB_MODE_DAC_SERIAL:
+			clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
+				5 : 10;
+			break;
+		case DPLLB_MODE_LVDS:
+			clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
+				7 : 14;
+			break;
+		default:
+			DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
+				  "mode\n", (int)(dpll & DPLL_MODE_MASK));
+			return;
+		}
+
+		if (IS_PINEVIEW(dev))
+			pineview_clock(refclk, &clock);
+		else
+			i9xx_clock(refclk, &clock);
+	} else {
+		u32 lvds = IS_I830(dev) ? 0 : I915_READ(LVDS);
+		bool is_lvds = (pipe == 1) && (lvds & LVDS_PORT_EN);
+
+		if (is_lvds) {
+			clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
+				       DPLL_FPA01_P1_POST_DIV_SHIFT);
+
+			if (lvds & LVDS_CLKB_POWER_UP)
+				clock.p2 = 7;
+			else
+				clock.p2 = 14;
+		} else {
+			if (dpll & PLL_P1_DIVIDE_BY_TWO)
+				clock.p1 = 2;
+			else {
+				clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
+					    DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
+			}
+			if (dpll & PLL_P2_DIVIDE_BY_4)
+				clock.p2 = 4;
+			else
+				clock.p2 = 2;
+		}
+
+		i9xx_clock(refclk, &clock);
+	}
+
+	/*
+	 * This value includes pixel_multiplier. We will use
+	 * port_clock to compute adjusted_mode.crtc_clock in the
+	 * encoder's get_config() function.
+	 */
+	pipe_config->port_clock = clock.dot;
+}
+
+void vlv_crtc_clock_get(struct intel_crtc *crtc,
+			struct intel_crtc_config *pipe_config)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int pipe = pipe_config->cpu_transcoder;
+	intel_clock_t clock;
+	u32 mdiv;
+	int refclk = 100000;
+
+	mutex_lock(&dev_priv->dpio_lock);
+	mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe));
+	mutex_unlock(&dev_priv->dpio_lock);
+
+	clock.m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7;
+	clock.m2 = mdiv & DPIO_M2DIV_MASK;
+	clock.n = (mdiv >> DPIO_N_SHIFT) & 0xf;
+	clock.p1 = (mdiv >> DPIO_P1_SHIFT) & 7;
+	clock.p2 = (mdiv >> DPIO_P2_SHIFT) & 0x1f;
+
+	vlv_clock(refclk, &clock);
+
+	/* clock.dot is the fast clock */
+	pipe_config->port_clock = clock.dot / 5;
+}
+
+void ironlake_pch_clock_get(struct intel_crtc *crtc,
+			    struct intel_crtc_config *pipe_config)
+{
+	struct drm_device *dev = crtc->base.dev;
+
+	/* read out port_clock from the DPLL */
+	i9xx_crtc_clock_get(crtc, pipe_config);
+
+	/*
+	 * This value does not include pixel_multiplier.
+	 * We will check that port_clock and adjusted_mode.crtc_clock
+	 * agree once we know their relationship in the encoder's
+	 * get_config() function.
+	 */
+	pipe_config->adjusted_mode.crtc_clock =
+		intel_dotclock_calculate(intel_fdi_link_freq(dev) * 10000,
+					 &pipe_config->fdi_m_n);
+}
+
+static bool ironlake_needs_fb_cb_tune(struct dpll *dpll, int factor)
+{
+	return i9xx_dpll_compute_m(dpll) < factor * dpll->n;
+}
+
+uint32_t ironlake_compute_dpll(struct intel_crtc *intel_crtc,
+			       u32 *fp, intel_clock_t *reduced_clock, u32 *fp2)
+{
+	struct drm_crtc *crtc = &intel_crtc->base;
+	struct drm_device *dev = crtc->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_encoder *intel_encoder;
+	uint32_t dpll;
+	int factor, num_connectors = 0;
+	bool is_lvds = false, is_sdvo = false;
+
+	for_each_encoder_on_crtc(dev, crtc, intel_encoder) {
+		switch (intel_encoder->type) {
+		case INTEL_OUTPUT_LVDS:
+			is_lvds = true;
+			break;
+		case INTEL_OUTPUT_SDVO:
+		case INTEL_OUTPUT_HDMI:
+			is_sdvo = true;
+			break;
+		}
+
+		num_connectors++;
+	}
+
+	/* Enable autotuning of the PLL clock (if permissible) */
+	factor = 21;
+	if (is_lvds) {
+		if ((intel_panel_use_ssc(dev_priv) &&
+		     dev_priv->vbt.lvds_ssc_freq == 100000) ||
+		    (HAS_PCH_IBX(dev) && intel_is_dual_link_lvds(dev)))
+			factor = 25;
+	} else if (intel_crtc->config.sdvo_tv_clock)
+		factor = 20;
+
+	if (ironlake_needs_fb_cb_tune(&intel_crtc->config.dpll, factor))
+		*fp |= FP_CB_TUNE;
+
+	if (fp2 && (reduced_clock->m < factor * reduced_clock->n))
+		*fp2 |= FP_CB_TUNE;
+
+	dpll = 0;
+
+	if (is_lvds)
+		dpll |= DPLLB_MODE_LVDS;
+	else
+		dpll |= DPLLB_MODE_DAC_SERIAL;
+
+	dpll |= (intel_crtc->config.pixel_multiplier - 1)
+		<< PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
+
+	if (is_sdvo)
+		dpll |= DPLL_SDVO_HIGH_SPEED;
+	if (intel_crtc->config.has_dp_encoder)
+		dpll |= DPLL_SDVO_HIGH_SPEED;
+
+	/* compute bitmask from p1 value */
+	dpll |= (1 << (intel_crtc->config.dpll.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+	/* also FPA1 */
+	dpll |= (1 << (intel_crtc->config.dpll.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
+
+	switch (intel_crtc->config.dpll.p2) {
+	case 5:
+		dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
+		break;
+	case 7:
+		dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
+		break;
+	case 10:
+		dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
+		break;
+	case 14:
+		dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
+		break;
+	}
+
+	if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
+		dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
+	else
+		dpll |= PLL_REF_INPUT_DREFCLK;
+
+	return dpll | DPLL_VCO_ENABLE;
+}
+
+int i9xx_get_refclk(struct drm_crtc *crtc, int num_connectors)
+{
+	struct drm_device *dev = crtc->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int refclk;
+
+	if (IS_VALLEYVIEW(dev)) {
+		refclk = 100000;
+	} else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
+	    intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
+		refclk = dev_priv->vbt.lvds_ssc_freq;
+		DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
+	} else if (!IS_GEN2(dev)) {
+		refclk = 96000;
+	} else {
+		refclk = 48000;
+	}
+
+	return refclk;
+}
+
+int ironlake_get_refclk(struct drm_crtc *crtc)
+{
+	struct drm_device *dev = crtc->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_encoder *encoder;
+	int num_connectors = 0;
+	bool is_lvds = false;
+
+	for_each_encoder_on_crtc(dev, crtc, encoder) {
+		switch (encoder->type) {
+		case INTEL_OUTPUT_LVDS:
+			is_lvds = true;
+			break;
+		}
+		num_connectors++;
+	}
+
+	if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
+		DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n",
+			      dev_priv->vbt.lvds_ssc_freq);
+		return dev_priv->vbt.lvds_ssc_freq;
+	}
+
+	return 120000;
+}
+
+/* Only for pre-ILK configs */
+void assert_pll(struct drm_i915_private *dev_priv,
+		enum pipe pipe, bool state)
+{
+	int reg;
+	u32 val;
+	bool cur_state;
+
+	reg = DPLL(pipe);
+	val = I915_READ(reg);
+	cur_state = !!(val & DPLL_VCO_ENABLE);
+	WARN(cur_state != state,
+	     "PLL state assertion failure (expected %s, current %s)\n",
+	     state_string(state), state_string(cur_state));
+}
+
+/* XXX: the dsi pll is shared between MIPI DSI ports */
+void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state)
+{
+	u32 val;
+	bool cur_state;
+
+	mutex_lock(&dev_priv->dpio_lock);
+	val = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
+	mutex_unlock(&dev_priv->dpio_lock);
+
+	cur_state = val & DSI_PLL_VCO_EN;
+	WARN(cur_state != state,
+	     "DSI PLL state assertion failure (expected %s, current %s)\n",
+	     state_string(state), state_string(cur_state));
+}
+
+/* For ILK+ */
+void assert_shared_dpll(struct drm_i915_private *dev_priv,
+			struct intel_shared_dpll *pll,
+			bool state)
+{
+	bool cur_state;
+	struct intel_dpll_hw_state hw_state;
+
+	if (HAS_PCH_LPT(dev_priv->dev)) {
+		DRM_DEBUG_DRIVER("LPT detected: skipping PCH PLL test\n");
+		return;
+	}
+
+	if (WARN (!pll,
+		  "asserting DPLL %s with no DPLL\n", state_string(state)))
+		return;
+
+	cur_state = pll->get_hw_state(dev_priv, pll, &hw_state);
+	WARN(cur_state != state,
+	     "%s assertion failure (expected %s, current %s)\n",
+	     pll->name, state_string(state), state_string(cur_state));
+}
+
+struct intel_shared_dpll *
+intel_crtc_to_shared_dpll(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
+
+	if (crtc->config.shared_dpll < 0)
+		return NULL;
+
+	return &dev_priv->shared_dplls[crtc->config.shared_dpll];
+}
+
+/**
+ * ironlake_enable_shared_dpll - enable PCH PLL
+ * @dev_priv: i915 private structure
+ * @pipe: pipe PLL to enable
+ *
+ * The PCH PLL needs to be enabled before the PCH transcoder, since it
+ * drives the transcoder clock.
+ */
+void ironlake_enable_shared_dpll(struct intel_crtc *crtc)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
+
+	/* PCH PLLs only available on ILK, SNB and IVB */
+	BUG_ON(INTEL_INFO(dev)->gen < 5);
+	if (WARN_ON(pll == NULL))
+		return;
+
+	if (WARN_ON(pll->refcount == 0))
+		return;
+
+	DRM_DEBUG_KMS("enable %s (active %d, on? %d)for crtc %d\n",
+		      pll->name, pll->active, pll->on,
+		      crtc->base.base.id);
+
+	if (pll->active++) {
+		WARN_ON(!pll->on);
+		assert_shared_dpll_enabled(dev_priv, pll);
+		return;
+	}
+	WARN_ON(pll->on);
+
+	DRM_DEBUG_KMS("enabling %s\n", pll->name);
+	pll->enable(dev_priv, pll);
+	pll->on = true;
+}
+
+void intel_disable_shared_dpll(struct intel_crtc *crtc)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
+
+	/* PCH only available on ILK+ */
+	BUG_ON(INTEL_INFO(dev)->gen < 5);
+	if (WARN_ON(pll == NULL))
+	       return;
+
+	if (WARN_ON(pll->refcount == 0))
+		return;
+
+	DRM_DEBUG_KMS("disable %s (active %d, on? %d) for crtc %d\n",
+		      pll->name, pll->active, pll->on,
+		      crtc->base.base.id);
+
+	if (WARN_ON(pll->active == 0)) {
+		assert_shared_dpll_disabled(dev_priv, pll);
+		return;
+	}
+
+	assert_shared_dpll_enabled(dev_priv, pll);
+	WARN_ON(!pll->on);
+	if (--pll->active)
+		return;
+
+	DRM_DEBUG_KMS("disabling %s\n", pll->name);
+	pll->disable(dev_priv, pll);
+	pll->on = false;
+}
+
+void intel_put_shared_dpll(struct intel_crtc *crtc)
+{
+	struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
+
+	if (pll == NULL)
+		return;
+
+	if (pll->refcount == 0) {
+		WARN(1, "bad %s refcount\n", pll->name);
+		return;
+	}
+
+	if (--pll->refcount == 0) {
+		WARN_ON(pll->on);
+		WARN_ON(pll->active);
+	}
+
+	crtc->config.shared_dpll = DPLL_ID_PRIVATE;
+}
+
+struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
+	struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
+	enum intel_dpll_id i;
+
+	if (pll) {
+		DRM_DEBUG_KMS("CRTC:%d dropping existing %s\n",
+			      crtc->base.base.id, pll->name);
+		intel_put_shared_dpll(crtc);
+	}
+
+	if (HAS_PCH_IBX(dev_priv->dev)) {
+		/* Ironlake PCH has a fixed PLL->PCH pipe mapping. */
+		i = (enum intel_dpll_id) crtc->pipe;
+		pll = &dev_priv->shared_dplls[i];
+
+		DRM_DEBUG_KMS("CRTC:%d using pre-allocated %s\n",
+			      crtc->base.base.id, pll->name);
+
+		goto found;
+	}
+
+	for (i = 0; i < dev_priv->num_shared_dpll; i++) {
+		pll = &dev_priv->shared_dplls[i];
+
+		/* Only want to check enabled timings first */
+		if (pll->refcount == 0)
+			continue;
+
+		if (memcmp(&crtc->config.dpll_hw_state, &pll->hw_state,
+			   sizeof(pll->hw_state)) == 0) {
+			DRM_DEBUG_KMS("CRTC:%d sharing existing %s (refcount %d, ative %d)\n",
+				      crtc->base.base.id,
+				      pll->name, pll->refcount, pll->active);
+
+			goto found;
+		}
+	}
+
+	/* Ok no matching timings, maybe there's a free one? */
+	for (i = 0; i < dev_priv->num_shared_dpll; i++) {
+		pll = &dev_priv->shared_dplls[i];
+		if (pll->refcount == 0) {
+			DRM_DEBUG_KMS("CRTC:%d allocated %s\n",
+				      crtc->base.base.id, pll->name);
+			goto found;
+		}
+	}
+
+	return NULL;
+
+found:
+	crtc->config.shared_dpll = i;
+	DRM_DEBUG_DRIVER("using %s for pipe %c\n", pll->name,
+			 pipe_name(crtc->pipe));
+
+	if (pll->active == 0) {
+		memcpy(&pll->hw_state, &crtc->config.dpll_hw_state,
+		       sizeof(pll->hw_state));
+
+		DRM_DEBUG_DRIVER("setting up %s\n", pll->name);
+		WARN_ON(pll->on);
+		assert_shared_dpll_disabled(dev_priv, pll);
+
+		pll->mode_set(dev_priv, pll);
+	}
+	pll->refcount++;
+
+	return pll;
+}
+
+void intel_increase_pllclock(struct drm_crtc *crtc)
+{
+	struct drm_device *dev = crtc->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+	int pipe = intel_crtc->pipe;
+	int dpll_reg = DPLL(pipe);
+	int dpll;
+
+	if (HAS_PCH_SPLIT(dev))
+		return;
+
+	if (!dev_priv->lvds_downclock_avail)
+		return;
+
+	dpll = I915_READ(dpll_reg);
+	if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
+		DRM_DEBUG_DRIVER("upclocking LVDS\n");
+
+		assert_panel_unlocked(dev_priv, pipe);
+
+		dpll &= ~DISPLAY_RATE_SELECT_FPA1;
+		I915_WRITE(dpll_reg, dpll);
+		intel_wait_for_vblank(dev, pipe);
+
+		dpll = I915_READ(dpll_reg);
+		if (dpll & DISPLAY_RATE_SELECT_FPA1)
+			DRM_DEBUG_DRIVER("failed to upclock LVDS!\n");
+	}
+}
+
+void intel_decrease_pllclock(struct drm_crtc *crtc)
+{
+	struct drm_device *dev = crtc->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+	if (HAS_PCH_SPLIT(dev))
+		return;
+
+	if (!dev_priv->lvds_downclock_avail)
+		return;
+
+	/*
+	 * Since this is called by a timer, we should never get here in
+	 * the manual case.
+	 */
+	if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
+		int pipe = intel_crtc->pipe;
+		int dpll_reg = DPLL(pipe);
+		int dpll;
+
+		DRM_DEBUG_DRIVER("downclocking LVDS\n");
+
+		assert_panel_unlocked(dev_priv, pipe);
+
+		dpll = I915_READ(dpll_reg);
+		dpll |= DISPLAY_RATE_SELECT_FPA1;
+		I915_WRITE(dpll_reg, dpll);
+		intel_wait_for_vblank(dev, pipe);
+		dpll = I915_READ(dpll_reg);
+		if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
+			DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
+	}
+
+}
+
+void vlv_enable_pll(struct intel_crtc *crtc)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int reg = DPLL(crtc->pipe);
+	u32 dpll = crtc->config.dpll_hw_state.dpll;
+
+	assert_pipe_disabled(dev_priv, crtc->pipe);
+
+	/* No really, not for ILK+ */
+	BUG_ON(!IS_VALLEYVIEW(dev_priv->dev));
+
+	/* PLL is protected by panel, make sure we can write it */
+	if (IS_MOBILE(dev_priv->dev) && !IS_I830(dev_priv->dev))
+		assert_panel_unlocked(dev_priv, crtc->pipe);
+
+	I915_WRITE(reg, dpll);
+	POSTING_READ(reg);
+	udelay(150);
+
+	if (wait_for(((I915_READ(reg) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
+		DRM_ERROR("DPLL %d failed to lock\n", crtc->pipe);
+
+	I915_WRITE(DPLL_MD(crtc->pipe), crtc->config.dpll_hw_state.dpll_md);
+	POSTING_READ(DPLL_MD(crtc->pipe));
+
+	/* We do this three times for luck */
+	I915_WRITE(reg, dpll);
+	POSTING_READ(reg);
+	udelay(150); /* wait for warmup */
+	I915_WRITE(reg, dpll);
+	POSTING_READ(reg);
+	udelay(150); /* wait for warmup */
+	I915_WRITE(reg, dpll);
+	POSTING_READ(reg);
+	udelay(150); /* wait for warmup */
+}
+
+void i9xx_enable_pll(struct intel_crtc *crtc)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int reg = DPLL(crtc->pipe);
+	u32 dpll = crtc->config.dpll_hw_state.dpll;
+
+	assert_pipe_disabled(dev_priv, crtc->pipe);
+
+	/* No really, not for ILK+ */
+	BUG_ON(INTEL_INFO(dev)->gen >= 5);
+
+	/* PLL is protected by panel, make sure we can write it */
+	if (IS_MOBILE(dev) && !IS_I830(dev))
+		assert_panel_unlocked(dev_priv, crtc->pipe);
+
+	I915_WRITE(reg, dpll);
+
+	/* Wait for the clocks to stabilize. */
+	POSTING_READ(reg);
+	udelay(150);
+
+	if (INTEL_INFO(dev)->gen >= 4) {
+		I915_WRITE(DPLL_MD(crtc->pipe),
+			   crtc->config.dpll_hw_state.dpll_md);
+	} else {
+		/* The pixel multiplier can only be updated once the
+		 * DPLL is enabled and the clocks are stable.
+		 *
+		 * So write it again.
+		 */
+		I915_WRITE(reg, dpll);
+	}
+
+	/* We do this three times for luck */
+	I915_WRITE(reg, dpll);
+	POSTING_READ(reg);
+	udelay(150); /* wait for warmup */
+	I915_WRITE(reg, dpll);
+	POSTING_READ(reg);
+	udelay(150); /* wait for warmup */
+	I915_WRITE(reg, dpll);
+	POSTING_READ(reg);
+	udelay(150); /* wait for warmup */
+}
+
+/**
+ * i9xx_disable_pll - disable a PLL
+ * @dev_priv: i915 private structure
+ * @pipe: pipe PLL to disable
+ *
+ * Disable the PLL for @pipe, making sure the pipe is off first.
+ *
+ * Note!  This is for pre-ILK only.
+ */
+void i9xx_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
+{
+	/* Don't disable pipe A or pipe A PLLs if needed */
+	if (pipe == PIPE_A && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
+		return;
+
+	/* Make sure the pipe isn't still relying on us */
+	assert_pipe_disabled(dev_priv, pipe);
+
+	I915_WRITE(DPLL(pipe), 0);
+	POSTING_READ(DPLL(pipe));
+}
+
+void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
+{
+	u32 val = 0;
+
+	/* Make sure the pipe isn't still relying on us */
+	assert_pipe_disabled(dev_priv, pipe);
+
+	/*
+	 * Leave integrated clock source and reference clock enabled for pipe B.
+	 * The latter is needed for VGA hotplug / manual detection.
+	 */
+	if (pipe == PIPE_B)
+		val = DPLL_INTEGRATED_CRI_CLK_VLV | DPLL_REFA_CLK_ENABLE_VLV;
+	I915_WRITE(DPLL(pipe), val);
+	POSTING_READ(DPLL(pipe));
+}
+
+static uint32_t pnv_dpll_compute_fp(struct dpll *dpll)
+{
+	return (1 << dpll->n) << 16 | dpll->m2;
+}
+
+uint32_t i9xx_dpll_compute_fp(struct dpll *dpll)
+{
+	return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;
+}
+
+static void i9xx_update_pll_dividers(struct intel_crtc *crtc,
+				     intel_clock_t *reduced_clock)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int pipe = crtc->pipe;
+	u32 fp, fp2 = 0;
+
+	if (IS_PINEVIEW(dev)) {
+		fp = pnv_dpll_compute_fp(&crtc->config.dpll);
+		if (reduced_clock)
+			fp2 = pnv_dpll_compute_fp(reduced_clock);
+	} else {
+		fp = i9xx_dpll_compute_fp(&crtc->config.dpll);
+		if (reduced_clock)
+			fp2 = i9xx_dpll_compute_fp(reduced_clock);
+	}
+
+	I915_WRITE(FP0(pipe), fp);
+	crtc->config.dpll_hw_state.fp0 = fp;
+
+	crtc->lowfreq_avail = false;
+	if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_LVDS) &&
+	    reduced_clock && i915.powersave) {
+		I915_WRITE(FP1(pipe), fp2);
+		crtc->config.dpll_hw_state.fp1 = fp2;
+		crtc->lowfreq_avail = true;
+	} else {
+		I915_WRITE(FP1(pipe), fp);
+		crtc->config.dpll_hw_state.fp1 = fp;
+	}
+}
+
+static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv, enum pipe
+		pipe)
+{
+	u32 reg_val;
+
+	/*
+	 * PLLB opamp always calibrates to max value of 0x3f, force enable it
+	 * and set it to a reasonable value instead.
+	 */
+	reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
+	reg_val &= 0xffffff00;
+	reg_val |= 0x00000030;
+	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
+
+	reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
+	reg_val &= 0x8cffffff;
+	reg_val = 0x8c000000;
+	vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
+
+	reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
+	reg_val &= 0xffffff00;
+	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
+
+	reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
+	reg_val &= 0x00ffffff;
+	reg_val |= 0xb0000000;
+	vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
+}
+
+void vlv_update_pll(struct intel_crtc *crtc)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int pipe = crtc->pipe;
+	u32 dpll, mdiv;
+	u32 bestn, bestm1, bestm2, bestp1, bestp2;
+	u32 coreclk, reg_val, dpll_md;
+
+	mutex_lock(&dev_priv->dpio_lock);
+
+	bestn = crtc->config.dpll.n;
+	bestm1 = crtc->config.dpll.m1;
+	bestm2 = crtc->config.dpll.m2;
+	bestp1 = crtc->config.dpll.p1;
+	bestp2 = crtc->config.dpll.p2;
+
+	/* See eDP HDMI DPIO driver vbios notes doc */
+
+	/* PLL B needs special handling */
+	if (pipe)
+		vlv_pllb_recal_opamp(dev_priv, pipe);
+
+	/* Set up Tx target for periodic Rcomp update */
+	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9_BCAST, 0x0100000f);
+
+	/* Disable target IRef on PLL */
+	reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW8(pipe));
+	reg_val &= 0x00ffffff;
+	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW8(pipe), reg_val);
+
+	/* Disable fast lock */
+	vlv_dpio_write(dev_priv, pipe, VLV_CMN_DW0, 0x610);
+
+	/* Set idtafcrecal before PLL is enabled */
+	mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK));
+	mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT));
+	mdiv |= ((bestn << DPIO_N_SHIFT));
+	mdiv |= (1 << DPIO_K_SHIFT);
+
+	/*
+	 * Post divider depends on pixel clock rate, DAC vs digital (and LVDS,
+	 * but we don't support that).
+	 * Note: don't use the DAC post divider as it seems unstable.
+	 */
+	mdiv |= (DPIO_POST_DIV_HDMIDP << DPIO_POST_DIV_SHIFT);
+	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
+
+	mdiv |= DPIO_ENABLE_CALIBRATION;
+	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
+
+	/* Set HBR and RBR LPF coefficients */
+	if (crtc->config.port_clock == 162000 ||
+	    intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_ANALOG) ||
+	    intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_HDMI))
+		vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
+				 0x009f0003);
+	else
+		vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
+				 0x00d0000f);
+
+	if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_EDP) ||
+	    intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_DISPLAYPORT)) {
+		/* Use SSC source */
+		if (!pipe)
+			vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
+					 0x0df40000);
+		else
+			vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
+					 0x0df70000);
+	} else { /* HDMI or VGA */
+		/* Use bend source */
+		if (!pipe)
+			vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
+					 0x0df70000);
+		else
+			vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
+					 0x0df40000);
+	}
+
+	coreclk = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW7(pipe));
+	coreclk = (coreclk & 0x0000ff00) | 0x01c00000;
+	if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_DISPLAYPORT) ||
+	    intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_EDP))
+		coreclk |= 0x01000000;
+	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW7(pipe), coreclk);
+
+	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW11(pipe), 0x87871000);
+
+	/*
+	 * Enable DPIO clock input. We should never disable the reference
+	 * clock for pipe B, since VGA hotplug / manual detection depends
+	 * on it.
+	 */
+	dpll = DPLL_EXT_BUFFER_ENABLE_VLV | DPLL_REFA_CLK_ENABLE_VLV |
+		DPLL_VGA_MODE_DIS | DPLL_INTEGRATED_CLOCK_VLV;
+	/* We should never disable this, set it here for state tracking */
+	if (pipe == PIPE_B)
+		dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
+	dpll |= DPLL_VCO_ENABLE;
+	crtc->config.dpll_hw_state.dpll = dpll;
+
+	dpll_md = (crtc->config.pixel_multiplier - 1)
+		<< DPLL_MD_UDI_MULTIPLIER_SHIFT;
+	crtc->config.dpll_hw_state.dpll_md = dpll_md;
+
+	mutex_unlock(&dev_priv->dpio_lock);
+}
+
+
+void i9xx_update_pll(struct intel_crtc *crtc, intel_clock_t *reduced_clock,
+		     int num_connectors)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	u32 dpll;
+	bool is_sdvo;
+	struct dpll *clock = &crtc->config.dpll;
+
+	i9xx_update_pll_dividers(crtc, reduced_clock);
+
+	is_sdvo = intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_SDVO) ||
+		intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_HDMI);
+
+	dpll = DPLL_VGA_MODE_DIS;
+
+	if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_LVDS))
+		dpll |= DPLLB_MODE_LVDS;
+	else
+		dpll |= DPLLB_MODE_DAC_SERIAL;
+
+	if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
+		dpll |= (crtc->config.pixel_multiplier - 1)
+			<< SDVO_MULTIPLIER_SHIFT_HIRES;
+	}
+
+	if (is_sdvo)
+		dpll |= DPLL_SDVO_HIGH_SPEED;
+
+	if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_DISPLAYPORT))
+		dpll |= DPLL_SDVO_HIGH_SPEED;
+
+	/* compute bitmask from p1 value */
+	if (IS_PINEVIEW(dev))
+		dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
+	else {
+		dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+		if (IS_G4X(dev) && reduced_clock)
+			dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
+	}
+	switch (clock->p2) {
+	case 5:
+		dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
+		break;
+	case 7:
+		dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
+		break;
+	case 10:
+		dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
+		break;
+	case 14:
+		dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
+		break;
+	}
+	if (INTEL_INFO(dev)->gen >= 4)
+		dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
+
+	if (crtc->config.sdvo_tv_clock)
+		dpll |= PLL_REF_INPUT_TVCLKINBC;
+	else if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_LVDS) &&
+		 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
+		dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
+	else
+		dpll |= PLL_REF_INPUT_DREFCLK;
+
+	dpll |= DPLL_VCO_ENABLE;
+	crtc->config.dpll_hw_state.dpll = dpll;
+
+	if (INTEL_INFO(dev)->gen >= 4) {
+		u32 dpll_md = (crtc->config.pixel_multiplier - 1)
+			<< DPLL_MD_UDI_MULTIPLIER_SHIFT;
+		crtc->config.dpll_hw_state.dpll_md = dpll_md;
+	}
+}
+
+void i8xx_update_pll(struct intel_crtc *crtc, intel_clock_t *reduced_clock,
+		     int num_connectors)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	u32 dpll;
+	struct dpll *clock = &crtc->config.dpll;
+
+	i9xx_update_pll_dividers(crtc, reduced_clock);
+
+	dpll = DPLL_VGA_MODE_DIS;
+
+	if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_LVDS)) {
+		dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+	} else {
+		if (clock->p1 == 2)
+			dpll |= PLL_P1_DIVIDE_BY_TWO;
+		else
+			dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+		if (clock->p2 == 4)
+			dpll |= PLL_P2_DIVIDE_BY_4;
+	}
+
+	if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_DVO))
+		dpll |= DPLL_DVO_2X_MODE;
+
+	if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_LVDS) &&
+		 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
+		dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
+	else
+		dpll |= PLL_REF_INPUT_DREFCLK;
+
+	dpll |= DPLL_VCO_ENABLE;
+	crtc->config.dpll_hw_state.dpll = dpll;
+}
+
+void intel_cpu_pll_init(struct drm_device *dev)
+{
+	if (HAS_DDI(dev))
+		intel_ddi_pll_init(dev);
+}
+
+static bool ibx_pch_dpll_get_hw_state(struct drm_i915_private *dev_priv,
+				      struct intel_shared_dpll *pll,
+				      struct intel_dpll_hw_state *hw_state)
+{
+	uint32_t val;
+
+	val = I915_READ(PCH_DPLL(pll->id));
+	hw_state->dpll = val;
+	hw_state->fp0 = I915_READ(PCH_FP0(pll->id));
+	hw_state->fp1 = I915_READ(PCH_FP1(pll->id));
+
+	return val & DPLL_VCO_ENABLE;
+}
+
+static void ibx_pch_dpll_mode_set(struct drm_i915_private *dev_priv,
+				  struct intel_shared_dpll *pll)
+{
+	I915_WRITE(PCH_FP0(pll->id), pll->hw_state.fp0);
+	I915_WRITE(PCH_FP1(pll->id), pll->hw_state.fp1);
+}
+
+static void ibx_assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
+{
+	u32 val;
+	bool enabled;
+
+	WARN_ON(!(HAS_PCH_IBX(dev_priv->dev) || HAS_PCH_CPT(dev_priv->dev)));
+
+	val = I915_READ(PCH_DREF_CONTROL);
+	enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
+			    DREF_SUPERSPREAD_SOURCE_MASK));
+	WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
+}
+
+static void ibx_pch_dpll_enable(struct drm_i915_private *dev_priv,
+				struct intel_shared_dpll *pll)
+{
+	/* PCH refclock must be enabled first */
+	ibx_assert_pch_refclk_enabled(dev_priv);
+
+	I915_WRITE(PCH_DPLL(pll->id), pll->hw_state.dpll);
+
+	/* Wait for the clocks to stabilize. */
+	POSTING_READ(PCH_DPLL(pll->id));
+	udelay(150);
+
+	/* The pixel multiplier can only be updated once the
+	 * DPLL is enabled and the clocks are stable.
+	 *
+	 * So write it again.
+	 */
+	I915_WRITE(PCH_DPLL(pll->id), pll->hw_state.dpll);
+	POSTING_READ(PCH_DPLL(pll->id));
+	udelay(200);
+}
+
+static void ibx_pch_dpll_disable(struct drm_i915_private *dev_priv,
+				 struct intel_shared_dpll *pll)
+{
+	struct drm_device *dev = dev_priv->dev;
+	struct intel_crtc *crtc;
+
+	/* Make sure no transcoder isn't still depending on us. */
+	list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
+		if (intel_crtc_to_shared_dpll(crtc) == pll)
+			assert_pch_transcoder_disabled(dev_priv, crtc->pipe);
+	}
+
+	I915_WRITE(PCH_DPLL(pll->id), 0);
+	POSTING_READ(PCH_DPLL(pll->id));
+	udelay(200);
+}
+
+static char *ibx_pch_dpll_names[] = {
+	"PCH DPLL A",
+	"PCH DPLL B",
+};
+
+static void ibx_pch_dpll_init(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int i;
+
+	dev_priv->num_shared_dpll = 2;
+
+	for (i = 0; i < dev_priv->num_shared_dpll; i++) {
+		dev_priv->shared_dplls[i].id = i;
+		dev_priv->shared_dplls[i].name = ibx_pch_dpll_names[i];
+		dev_priv->shared_dplls[i].mode_set = ibx_pch_dpll_mode_set;
+		dev_priv->shared_dplls[i].enable = ibx_pch_dpll_enable;
+		dev_priv->shared_dplls[i].disable = ibx_pch_dpll_disable;
+		dev_priv->shared_dplls[i].get_hw_state =
+			ibx_pch_dpll_get_hw_state;
+	}
+}
+
+void intel_shared_dpll_init(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+
+	if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
+		ibx_pch_dpll_init(dev);
+	else
+		dev_priv->num_shared_dpll = 0;
+
+	BUG_ON(dev_priv->num_shared_dpll > I915_NUM_PLLS);
+}
+
+
+void intel_pll_init(struct drm_i915_private *dev_priv)
+{
+	struct drm_device *dev = dev_priv->dev;
+
+	if (HAS_PCH_SPLIT(dev) || IS_G4X(dev))
+		dev_priv->display.find_dpll = g4x_find_best_dpll;
+	else if (IS_VALLEYVIEW(dev))
+		dev_priv->display.find_dpll = vlv_find_best_dpll;
+	else if (IS_PINEVIEW(dev))
+		dev_priv->display.find_dpll = pnv_find_best_dpll;
+	else
+		dev_priv->display.find_dpll = i9xx_find_best_dpll;
+}
