diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index a26edcdadc21..994f87a12782 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -279,6 +279,7 @@ i915-y += \
 	display/icl_dsi.o \
 	display/intel_backlight.o \
 	display/intel_crt.o \
+	display/intel_cx0_phy.o \
 	display/intel_ddi.o \
 	display/intel_ddi_buf_trans.o \
 	display/intel_display_trace.o \
diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
new file mode 100644
index 000000000000..7930b0255cfa
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
@@ -0,0 +1,179 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#include "intel_de.h"
+#include "intel_uncore.h"
+
+static void intel_cx0_bus_reset(struct drm_i915_private *i915, enum port port, int lane)
+{
+	enum phy phy = intel_port_to_phy(i915, port);
+
+	/* Bring the phy to idle. */
+	intel_de_write(i915, XELPDP_PORT_M2P_MSGBUS_CTL(port, lane),
+		       XELPDP_PORT_M2P_TRANSACTION_RESET);
+
+	/* Wait for Idle Clear. */
+	if (intel_de_wait_for_clear(i915, XELPDP_PORT_M2P_MSGBUS_CTL(port, lane),
+				    XELPDP_PORT_M2P_TRANSACTION_RESET,
+				    XELPDP_MSGBUS_TIMEOUT_SLOW)) {
+		drm_err_once(&i915->drm, "Failed to bring PHY %c to idle. \n", phy_name(phy));
+		return;
+	}
+
+	intel_de_write(i915, XELPDP_PORT_P2M_MSGBUS_STATUS(port, lane), ~0);
+	return;
+}
+
+__maybe_unused static u8 intel_cx0_read(struct drm_i915_private *i915, enum port port,
+			 int lane, u16 addr)
+{
+	enum phy phy = intel_port_to_phy(i915, port);
+	u32 val = 0;
+	int attempts = 0;
+
+retry:
+	if (attempts == 3) {
+		drm_err_once(&i915->drm, "PHY %c Read %04x failed after %d retries. Status: 0x%x\n", phy_name(phy), addr, attempts, val ?: 0);
+		return 0;
+	}
+
+	/* Wait for pending transactions.*/
+	if (intel_de_wait_for_clear(i915, XELPDP_PORT_M2P_MSGBUS_CTL(port, lane),
+				    XELPDP_PORT_M2P_TRANSACTION_PENDING,
+				    XELPDP_MSGBUS_TIMEOUT_SLOW)) {
+		drm_dbg(&i915->drm, "PHY %c Timeout waiting for previous transaction to complete. Reset the bus and retry.\n", phy_name(phy));
+		attempts++;
+		intel_cx0_bus_reset(i915, port, lane);
+		goto retry;
+	}
+
+	/* Issue the read command. */
+	intel_de_write(i915, XELPDP_PORT_M2P_MSGBUS_CTL(port, lane),
+		       XELPDP_PORT_M2P_TRANSACTION_PENDING |
+		       XELPDP_PORT_M2P_COMMAND_READ |
+		       XELPDP_PORT_M2P_ADDRESS(addr));
+
+	/* Wait for response ready. And read response.*/
+	if (__intel_wait_for_register(&i915->uncore,
+				      XELPDP_PORT_P2M_MSGBUS_STATUS(port, lane),
+				      XELPDP_PORT_P2M_RESPONSE_READY,
+				      XELPDP_PORT_P2M_RESPONSE_READY,
+				      XELPDP_MSGBUS_TIMEOUT_FAST_US,
+				      XELPDP_MSGBUS_TIMEOUT_SLOW, &val)) {
+		drm_dbg(&i915->drm, "PHY %c Timeout waiting for Read response ACK. Status: 0x%x\n", phy_name(phy), val);
+		attempts++;
+		intel_cx0_bus_reset(i915, port, lane);
+		goto retry;
+	}
+
+	/* Check for error. */
+	if (val & XELPDP_PORT_P2M_ERROR_SET) {
+		drm_dbg(&i915->drm, "PHY %c Error occurred during read command. Status: 0x%x\n", phy_name(phy), val);
+		attempts++;
+		intel_cx0_bus_reset(i915, port, lane);
+		goto retry;
+	}
+
+	/* Check for Read Ack. */
+	if (REG_FIELD_GET(XELPDP_PORT_P2M_COMMAND_TYPE_MASK, val) !=
+	    XELPDP_PORT_P2M_COMMAND_READ_ACK) {
+		drm_dbg(&i915->drm, "PHY %c Not a Read response. MSGBUS Status: 0x%x.\n", phy_name(phy), val);
+		attempts++;
+		intel_cx0_bus_reset(i915, port, lane);
+		goto retry;
+	}
+
+	/* Clear Response Ready flag.*/
+	intel_de_write(i915, XELPDP_PORT_P2M_MSGBUS_STATUS(port, lane), ~0);
+	return (u8)REG_FIELD_GET(XELPDP_PORT_P2M_DATA_MASK, val);
+}
+
+static int intel_cx0_wait_cwrite_ack(struct drm_i915_private *i915,
+				      enum port port, int lane)
+{
+	enum phy phy = intel_port_to_phy(i915, port);
+	u32 val;
+
+	/* Check for write ack. */
+	if (__intel_wait_for_register(&i915->uncore,
+				      XELPDP_PORT_P2M_MSGBUS_STATUS(port, lane),
+				      XELPDP_PORT_P2M_RESPONSE_READY,
+				      XELPDP_PORT_P2M_RESPONSE_READY,
+				      XELPDP_MSGBUS_TIMEOUT_FAST_US,
+				      XELPDP_MSGBUS_TIMEOUT_SLOW, &val)) {
+		drm_dbg(&i915->drm, "PHY %c Timeout waiting for Committed message ACK. Status: 0x%x\n", phy_name(phy), val);
+		return -ETIMEDOUT;
+	}
+
+	if ((REG_FIELD_GET(XELPDP_PORT_P2M_COMMAND_TYPE_MASK, val) !=
+	     XELPDP_PORT_P2M_COMMAND_WRITE_ACK) || val & XELPDP_PORT_P2M_ERROR_SET) {
+		drm_dbg(&i915->drm, "PHY %c Unexpected ACK received. MSGBUS STATUS: 0x%x.\n", phy_name(phy), val);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+__maybe_unused static void intel_cx0_write(struct drm_i915_private *i915, enum port port,
+			    int lane, u16 addr, u8 data, bool committed)
+{
+	enum phy phy = intel_port_to_phy(i915, port);
+	int attempts = 0;
+
+retry:
+	if (attempts == 3) {
+		drm_err_once(&i915->drm, "PHY %c Write %04x failed after %d retries.\n", phy_name(phy), addr, attempts);
+		return;
+	}
+
+	/* Wait for pending transactions.*/
+	if (intel_de_wait_for_clear(i915, XELPDP_PORT_M2P_MSGBUS_CTL(port, lane),
+				    XELPDP_PORT_M2P_TRANSACTION_PENDING,
+				    XELPDP_MSGBUS_TIMEOUT_SLOW)) {
+		drm_dbg(&i915->drm, "PHY %c Timeout waiting for previous transaction to complete. Reset the bus and retry.\n", phy_name(phy));
+		attempts++;
+		intel_cx0_bus_reset(i915, port, lane);
+		goto retry;
+	}
+
+	/* Issue the write command. */
+	intel_de_write(i915, XELPDP_PORT_M2P_MSGBUS_CTL(port, lane),
+		       XELPDP_PORT_M2P_TRANSACTION_PENDING |
+		       (committed ? XELPDP_PORT_M2P_COMMAND_WRITE_COMMITTED :
+		       XELPDP_PORT_M2P_COMMAND_WRITE_UNCOMMITTED) |
+		       XELPDP_PORT_M2P_DATA(data) |
+		       XELPDP_PORT_M2P_ADDRESS(addr));
+
+	/* Check for error. */
+	if (committed) {
+		if (intel_cx0_wait_cwrite_ack(i915, port, lane) < 0) {
+			attempts++;
+			intel_cx0_bus_reset(i915, port, lane);
+			goto retry;
+		}
+	} else if ((intel_de_read(i915, XELPDP_PORT_P2M_MSGBUS_STATUS(phy, lane)) &
+			    XELPDP_PORT_P2M_ERROR_SET)) {
+		drm_dbg(&i915->drm, "PHY %c Error occurred during write command.\n", phy_name(phy));
+		attempts++;
+		intel_cx0_bus_reset(i915, port, lane);
+		goto retry;
+	}
+
+	intel_de_write(i915, XELPDP_PORT_P2M_MSGBUS_STATUS(port, lane), ~0);
+
+	return;
+}
+
+__maybe_unused static void intel_cx0_rmw(struct drm_i915_private *i915, enum port port,
+			  int lane, u16 addr, u8 clear, u8 set, bool committed)
+{
+	u8 old, val;
+
+	old = intel_cx0_read(i915, port, lane, addr);
+	val = (old & ~clear) | set;
+
+	if (val != old)
+		intel_cx0_write(i915, port, lane, addr, val, committed);
+}
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 5003a5ffbc6a..9b98d37de95c 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8375,4 +8375,63 @@ enum skl_power_gate {
 
 #define MTL_MEDIA_GSI_BASE		0x380000
 
+#define PUNIT_MMIO_CR_POC_STRAPS	_MMIO(0x281078)
+#define   NUM_TILES_MASK		REG_GENMASK(1, 0)
+#define   CD_ALIVE			REG_BIT(2)
+#define   SOCKET_ID_MASK		REG_GENMASK(7, 3)
+
+/* Define the BAR and offset for the accelerator fabric CSRs */
+#define CD_BASE_OFFSET 0x291000
+#define CD_BAR_SIZE (256 * 1024)
+
+/*
+ * In general, the i915 should not touch the IAF registers.  The registers
+ * will be passed as an IO resource via the MFD interface.  However, it
+ * is necessary to put the IRQ bits in a known state, before the MFD cell
+ * is registered.
+ *
+ * So define these registers for i915 usage.
+ */
+#define CPORT_MBDB_CSRS (CD_BASE_OFFSET + 0x6000)
+#define CPORT_MBDB_CSRS_END (CPORT_MBDB_CSRS + 0x1000)
+#define CPORT_MBDB_INT_ENABLE_MASK _MMIO(CPORT_MBDB_CSRS + 0x8)
+
+#define _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_A		0x64040
+#define _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_B		0x64140
+#define _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_USBC1		0x16F240
+#define _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_USBC2		0x16F440
+#define _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_USBC3		0x16F640
+#define _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_USBC4		0x16F840
+#define _XELPDP_PORT_M2P_MSGBUS_CTL(port, lane)		(_PICK(port, \
+							[PORT_A] = _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_A, \
+							[PORT_B] = _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_B, \
+							[PORT_TC1] = _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_USBC1, \
+							[PORT_TC2] = _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_USBC2, \
+							[PORT_TC3] = _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_USBC3, \
+							[PORT_TC4] = _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_USBC4) + ((lane) * 4))
+
+#define XELPDP_PORT_M2P_MSGBUS_CTL(port, lane)		_MMIO(_XELPDP_PORT_M2P_MSGBUS_CTL(port, lane))
+#define  XELPDP_PORT_M2P_TRANSACTION_PENDING		REG_BIT(31)
+#define  XELPDP_PORT_M2P_COMMAND_TYPE_MASK		REG_GENMASK(30, 27)
+#define  XELPDP_PORT_M2P_COMMAND_WRITE_UNCOMMITTED	REG_FIELD_PREP(XELPDP_PORT_M2P_COMMAND_TYPE_MASK, 0x1)
+#define  XELPDP_PORT_M2P_COMMAND_WRITE_COMMITTED	REG_FIELD_PREP(XELPDP_PORT_M2P_COMMAND_TYPE_MASK, 0x2)
+#define  XELPDP_PORT_M2P_COMMAND_READ			REG_FIELD_PREP(XELPDP_PORT_M2P_COMMAND_TYPE_MASK, 0x3)
+#define  XELPDP_PORT_M2P_DATA_MASK			REG_GENMASK(23, 16)
+#define  XELPDP_PORT_M2P_DATA(val)			REG_FIELD_PREP(XELPDP_PORT_M2P_DATA_MASK, val)
+#define  XELPDP_PORT_M2P_TRANSACTION_RESET		REG_BIT(15)
+#define  XELPDP_PORT_M2P_ADDRESS_MASK			REG_GENMASK(11, 0)
+#define  XELPDP_PORT_M2P_ADDRESS(val)			REG_FIELD_PREP(XELPDP_PORT_M2P_ADDRESS_MASK, val)
+
+#define XELPDP_PORT_P2M_MSGBUS_STATUS(port, lane)	_MMIO(_XELPDP_PORT_M2P_MSGBUS_CTL(port, lane) + 8)
+#define  XELPDP_PORT_P2M_RESPONSE_READY			REG_BIT(31)
+#define  XELPDP_PORT_P2M_COMMAND_TYPE_MASK		REG_GENMASK(30, 27)
+#define  XELPDP_PORT_P2M_COMMAND_READ_ACK		0x4
+#define  XELPDP_PORT_P2M_COMMAND_WRITE_ACK		0x5
+#define  XELPDP_PORT_P2M_DATA_MASK			REG_GENMASK(23, 16)
+#define  XELPDP_PORT_P2M_DATA(val)			REG_FIELD_PREP(XELPDP_PORT_P2M_DATA_MASK, val)
+#define  XELPDP_PORT_P2M_ERROR_SET			REG_BIT(15)
+
+#define  XELPDP_MSGBUS_TIMEOUT_SLOW			1
+#define  XELPDP_MSGBUS_TIMEOUT_FAST_US			2
+
 #endif /* _I915_REG_H_ */
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
deleted file mode 100644
index 2595ec5aeb77..000000000000
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ /dev/null
@@ -1,5066 +0,0 @@
-/*
- * Copyright © 2012 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:
- *    Eugeni Dodonov <eugeni.dodonov@intel.com>
- *
- */
-
-#include "display/intel_de.h"
-#include "display/intel_display_trace.h"
-#include "display/skl_watermark.h"
-
-#include "gt/intel_engine_regs.h"
-#include "gt/intel_gt_regs.h"
-
-#include "i915_drv.h"
-#include "intel_mchbar_regs.h"
-#include "intel_pm.h"
-#include "vlv_sideband.h"
-
-struct drm_i915_clock_gating_funcs {
-	void (*init_clock_gating)(struct drm_i915_private *i915);
-};
-
-/* used in computing the new watermarks state */
-struct intel_wm_config {
-	unsigned int num_pipes_active;
-	bool sprites_enabled;
-	bool sprites_scaled;
-};
-
-static void gen9_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	if (HAS_LLC(dev_priv)) {
-		/*
-		 * WaCompressedResourceDisplayNewHashMode:skl,kbl
-		 * Display WA #0390: skl,kbl
-		 *
-		 * Must match Sampler, Pixel Back End, and Media. See
-		 * WaCompressedResourceSamplerPbeMediaNewHashMode.
-		 */
-		intel_uncore_write(&dev_priv->uncore, CHICKEN_PAR1_1,
-			   intel_uncore_read(&dev_priv->uncore, CHICKEN_PAR1_1) |
-			   SKL_DE_COMPRESSED_HASH_MODE);
-	}
-
-	/* See Bspec note for PSR2_CTL bit 31, Wa#828:skl,bxt,kbl,cfl */
-	intel_uncore_write(&dev_priv->uncore, CHICKEN_PAR1_1,
-		   intel_uncore_read(&dev_priv->uncore, CHICKEN_PAR1_1) | SKL_EDP_PSR_FIX_RDWRAP);
-
-	/* WaEnableChickenDCPR:skl,bxt,kbl,glk,cfl */
-	intel_uncore_write(&dev_priv->uncore, GEN8_CHICKEN_DCPR_1,
-		   intel_uncore_read(&dev_priv->uncore, GEN8_CHICKEN_DCPR_1) | MASK_WAKEMEM);
-
-	/*
-	 * WaFbcWakeMemOn:skl,bxt,kbl,glk,cfl
-	 * Display WA #0859: skl,bxt,kbl,glk,cfl
-	 */
-	intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) |
-		   DISP_FBC_MEMORY_WAKE);
-}
-
-static void bxt_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	gen9_init_clock_gating(dev_priv);
-
-	/* WaDisableSDEUnitClockGating:bxt */
-	intel_uncore_write(&dev_priv->uncore, GEN8_UCGCTL6, intel_uncore_read(&dev_priv->uncore, GEN8_UCGCTL6) |
-		   GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
-
-	/*
-	 * FIXME:
-	 * GEN8_HDCUNIT_CLOCK_GATE_DISABLE_HDCREQ applies on 3x6 GT SKUs only.
-	 */
-	intel_uncore_write(&dev_priv->uncore, GEN8_UCGCTL6, intel_uncore_read(&dev_priv->uncore, GEN8_UCGCTL6) |
-		   GEN8_HDCUNIT_CLOCK_GATE_DISABLE_HDCREQ);
-
-	/*
-	 * Wa: Backlight PWM may stop in the asserted state, causing backlight
-	 * to stay fully on.
-	 */
-	intel_uncore_write(&dev_priv->uncore, GEN9_CLKGATE_DIS_0, intel_uncore_read(&dev_priv->uncore, GEN9_CLKGATE_DIS_0) |
-		   PWM1_GATING_DIS | PWM2_GATING_DIS);
-
-	/*
-	 * Lower the display internal timeout.
-	 * This is needed to avoid any hard hangs when DSI port PLL
-	 * is off and a MMIO access is attempted by any privilege
-	 * application, using batch buffers or any other means.
-	 */
-	intel_uncore_write(&dev_priv->uncore, RM_TIMEOUT, MMIO_TIMEOUT_US(950));
-
-	/*
-	 * WaFbcTurnOffFbcWatermark:bxt
-	 * Display WA #0562: bxt
-	 */
-	intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) |
-		   DISP_FBC_WM_DIS);
-
-	/*
-	 * WaFbcHighMemBwCorruptionAvoidance:bxt
-	 * Display WA #0883: bxt
-	 */
-	intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A),
-			   intel_uncore_read(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A)) |
-			   DPFC_DISABLE_DUMMY0);
-}
-
-static void glk_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	gen9_init_clock_gating(dev_priv);
-
-	/*
-	 * WaDisablePWMClockGating:glk
-	 * Backlight PWM may stop in the asserted state, causing backlight
-	 * to stay fully on.
-	 */
-	intel_uncore_write(&dev_priv->uncore, GEN9_CLKGATE_DIS_0, intel_uncore_read(&dev_priv->uncore, GEN9_CLKGATE_DIS_0) |
-		   PWM1_GATING_DIS | PWM2_GATING_DIS);
-}
-
-static void pnv_get_mem_freq(struct drm_i915_private *dev_priv)
-{
-	u32 tmp;
-
-	tmp = intel_uncore_read(&dev_priv->uncore, CLKCFG);
-
-	switch (tmp & CLKCFG_FSB_MASK) {
-	case CLKCFG_FSB_533:
-		dev_priv->fsb_freq = 533; /* 133*4 */
-		break;
-	case CLKCFG_FSB_800:
-		dev_priv->fsb_freq = 800; /* 200*4 */
-		break;
-	case CLKCFG_FSB_667:
-		dev_priv->fsb_freq =  667; /* 167*4 */
-		break;
-	case CLKCFG_FSB_400:
-		dev_priv->fsb_freq = 400; /* 100*4 */
-		break;
-	}
-
-	switch (tmp & CLKCFG_MEM_MASK) {
-	case CLKCFG_MEM_533:
-		dev_priv->mem_freq = 533;
-		break;
-	case CLKCFG_MEM_667:
-		dev_priv->mem_freq = 667;
-		break;
-	case CLKCFG_MEM_800:
-		dev_priv->mem_freq = 800;
-		break;
-	}
-
-	/* detect pineview DDR3 setting */
-	tmp = intel_uncore_read(&dev_priv->uncore, CSHRDDR3CTL);
-	dev_priv->is_ddr3 = (tmp & CSHRDDR3CTL_DDR3) ? 1 : 0;
-}
-
-static void ilk_get_mem_freq(struct drm_i915_private *dev_priv)
-{
-	u16 ddrpll, csipll;
-
-	ddrpll = intel_uncore_read16(&dev_priv->uncore, DDRMPLL1);
-	csipll = intel_uncore_read16(&dev_priv->uncore, CSIPLL0);
-
-	switch (ddrpll & 0xff) {
-	case 0xc:
-		dev_priv->mem_freq = 800;
-		break;
-	case 0x10:
-		dev_priv->mem_freq = 1066;
-		break;
-	case 0x14:
-		dev_priv->mem_freq = 1333;
-		break;
-	case 0x18:
-		dev_priv->mem_freq = 1600;
-		break;
-	default:
-		drm_dbg(&dev_priv->drm, "unknown memory frequency 0x%02x\n",
-			ddrpll & 0xff);
-		dev_priv->mem_freq = 0;
-		break;
-	}
-
-	switch (csipll & 0x3ff) {
-	case 0x00c:
-		dev_priv->fsb_freq = 3200;
-		break;
-	case 0x00e:
-		dev_priv->fsb_freq = 3733;
-		break;
-	case 0x010:
-		dev_priv->fsb_freq = 4266;
-		break;
-	case 0x012:
-		dev_priv->fsb_freq = 4800;
-		break;
-	case 0x014:
-		dev_priv->fsb_freq = 5333;
-		break;
-	case 0x016:
-		dev_priv->fsb_freq = 5866;
-		break;
-	case 0x018:
-		dev_priv->fsb_freq = 6400;
-		break;
-	default:
-		drm_dbg(&dev_priv->drm, "unknown fsb frequency 0x%04x\n",
-			csipll & 0x3ff);
-		dev_priv->fsb_freq = 0;
-		break;
-	}
-}
-
-static const struct cxsr_latency cxsr_latency_table[] = {
-	{1, 0, 800, 400, 3382, 33382, 3983, 33983},    /* DDR2-400 SC */
-	{1, 0, 800, 667, 3354, 33354, 3807, 33807},    /* DDR2-667 SC */
-	{1, 0, 800, 800, 3347, 33347, 3763, 33763},    /* DDR2-800 SC */
-	{1, 1, 800, 667, 6420, 36420, 6873, 36873},    /* DDR3-667 SC */
-	{1, 1, 800, 800, 5902, 35902, 6318, 36318},    /* DDR3-800 SC */
-
-	{1, 0, 667, 400, 3400, 33400, 4021, 34021},    /* DDR2-400 SC */
-	{1, 0, 667, 667, 3372, 33372, 3845, 33845},    /* DDR2-667 SC */
-	{1, 0, 667, 800, 3386, 33386, 3822, 33822},    /* DDR2-800 SC */
-	{1, 1, 667, 667, 6438, 36438, 6911, 36911},    /* DDR3-667 SC */
-	{1, 1, 667, 800, 5941, 35941, 6377, 36377},    /* DDR3-800 SC */
-
-	{1, 0, 400, 400, 3472, 33472, 4173, 34173},    /* DDR2-400 SC */
-	{1, 0, 400, 667, 3443, 33443, 3996, 33996},    /* DDR2-667 SC */
-	{1, 0, 400, 800, 3430, 33430, 3946, 33946},    /* DDR2-800 SC */
-	{1, 1, 400, 667, 6509, 36509, 7062, 37062},    /* DDR3-667 SC */
-	{1, 1, 400, 800, 5985, 35985, 6501, 36501},    /* DDR3-800 SC */
-
-	{0, 0, 800, 400, 3438, 33438, 4065, 34065},    /* DDR2-400 SC */
-	{0, 0, 800, 667, 3410, 33410, 3889, 33889},    /* DDR2-667 SC */
-	{0, 0, 800, 800, 3403, 33403, 3845, 33845},    /* DDR2-800 SC */
-	{0, 1, 800, 667, 6476, 36476, 6955, 36955},    /* DDR3-667 SC */
-	{0, 1, 800, 800, 5958, 35958, 6400, 36400},    /* DDR3-800 SC */
-
-	{0, 0, 667, 400, 3456, 33456, 4103, 34106},    /* DDR2-400 SC */
-	{0, 0, 667, 667, 3428, 33428, 3927, 33927},    /* DDR2-667 SC */
-	{0, 0, 667, 800, 3443, 33443, 3905, 33905},    /* DDR2-800 SC */
-	{0, 1, 667, 667, 6494, 36494, 6993, 36993},    /* DDR3-667 SC */
-	{0, 1, 667, 800, 5998, 35998, 6460, 36460},    /* DDR3-800 SC */
-
-	{0, 0, 400, 400, 3528, 33528, 4255, 34255},    /* DDR2-400 SC */
-	{0, 0, 400, 667, 3500, 33500, 4079, 34079},    /* DDR2-667 SC */
-	{0, 0, 400, 800, 3487, 33487, 4029, 34029},    /* DDR2-800 SC */
-	{0, 1, 400, 667, 6566, 36566, 7145, 37145},    /* DDR3-667 SC */
-	{0, 1, 400, 800, 6042, 36042, 6584, 36584},    /* DDR3-800 SC */
-};
-
-static const struct cxsr_latency *intel_get_cxsr_latency(bool is_desktop,
-							 bool is_ddr3,
-							 int fsb,
-							 int mem)
-{
-	const struct cxsr_latency *latency;
-	int i;
-
-	if (fsb == 0 || mem == 0)
-		return NULL;
-
-	for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) {
-		latency = &cxsr_latency_table[i];
-		if (is_desktop == latency->is_desktop &&
-		    is_ddr3 == latency->is_ddr3 &&
-		    fsb == latency->fsb_freq && mem == latency->mem_freq)
-			return latency;
-	}
-
-	DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
-
-	return NULL;
-}
-
-static void chv_set_memory_dvfs(struct drm_i915_private *dev_priv, bool enable)
-{
-	u32 val;
-
-	vlv_punit_get(dev_priv);
-
-	val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2);
-	if (enable)
-		val &= ~FORCE_DDR_HIGH_FREQ;
-	else
-		val |= FORCE_DDR_HIGH_FREQ;
-	val &= ~FORCE_DDR_LOW_FREQ;
-	val |= FORCE_DDR_FREQ_REQ_ACK;
-	vlv_punit_write(dev_priv, PUNIT_REG_DDR_SETUP2, val);
-
-	if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2) &
-		      FORCE_DDR_FREQ_REQ_ACK) == 0, 3))
-		drm_err(&dev_priv->drm,
-			"timed out waiting for Punit DDR DVFS request\n");
-
-	vlv_punit_put(dev_priv);
-}
-
-static void chv_set_memory_pm5(struct drm_i915_private *dev_priv, bool enable)
-{
-	u32 val;
-
-	vlv_punit_get(dev_priv);
-
-	val = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM);
-	if (enable)
-		val |= DSP_MAXFIFO_PM5_ENABLE;
-	else
-		val &= ~DSP_MAXFIFO_PM5_ENABLE;
-	vlv_punit_write(dev_priv, PUNIT_REG_DSPSSPM, val);
-
-	vlv_punit_put(dev_priv);
-}
-
-#define FW_WM(value, plane) \
-	(((value) << DSPFW_ ## plane ## _SHIFT) & DSPFW_ ## plane ## _MASK)
-
-static bool _intel_set_memory_cxsr(struct drm_i915_private *dev_priv, bool enable)
-{
-	bool was_enabled;
-	u32 val;
-
-	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
-		was_enabled = intel_uncore_read(&dev_priv->uncore, FW_BLC_SELF_VLV) & FW_CSPWRDWNEN;
-		intel_uncore_write(&dev_priv->uncore, FW_BLC_SELF_VLV, enable ? FW_CSPWRDWNEN : 0);
-		intel_uncore_posting_read(&dev_priv->uncore, FW_BLC_SELF_VLV);
-	} else if (IS_G4X(dev_priv) || IS_I965GM(dev_priv)) {
-		was_enabled = intel_uncore_read(&dev_priv->uncore, FW_BLC_SELF) & FW_BLC_SELF_EN;
-		intel_uncore_write(&dev_priv->uncore, FW_BLC_SELF, enable ? FW_BLC_SELF_EN : 0);
-		intel_uncore_posting_read(&dev_priv->uncore, FW_BLC_SELF);
-	} else if (IS_PINEVIEW(dev_priv)) {
-		val = intel_uncore_read(&dev_priv->uncore, DSPFW3);
-		was_enabled = val & PINEVIEW_SELF_REFRESH_EN;
-		if (enable)
-			val |= PINEVIEW_SELF_REFRESH_EN;
-		else
-			val &= ~PINEVIEW_SELF_REFRESH_EN;
-		intel_uncore_write(&dev_priv->uncore, DSPFW3, val);
-		intel_uncore_posting_read(&dev_priv->uncore, DSPFW3);
-	} else if (IS_I945G(dev_priv) || IS_I945GM(dev_priv)) {
-		was_enabled = intel_uncore_read(&dev_priv->uncore, FW_BLC_SELF) & FW_BLC_SELF_EN;
-		val = enable ? _MASKED_BIT_ENABLE(FW_BLC_SELF_EN) :
-			       _MASKED_BIT_DISABLE(FW_BLC_SELF_EN);
-		intel_uncore_write(&dev_priv->uncore, FW_BLC_SELF, val);
-		intel_uncore_posting_read(&dev_priv->uncore, FW_BLC_SELF);
-	} else if (IS_I915GM(dev_priv)) {
-		/*
-		 * FIXME can't find a bit like this for 915G, and
-		 * and yet it does have the related watermark in
-		 * FW_BLC_SELF. What's going on?
-		 */
-		was_enabled = intel_uncore_read(&dev_priv->uncore, INSTPM) & INSTPM_SELF_EN;
-		val = enable ? _MASKED_BIT_ENABLE(INSTPM_SELF_EN) :
-			       _MASKED_BIT_DISABLE(INSTPM_SELF_EN);
-		intel_uncore_write(&dev_priv->uncore, INSTPM, val);
-		intel_uncore_posting_read(&dev_priv->uncore, INSTPM);
-	} else {
-		return false;
-	}
-
-	trace_intel_memory_cxsr(dev_priv, was_enabled, enable);
-
-	drm_dbg_kms(&dev_priv->drm, "memory self-refresh is %s (was %s)\n",
-		    str_enabled_disabled(enable),
-		    str_enabled_disabled(was_enabled));
-
-	return was_enabled;
-}
-
-/**
- * intel_set_memory_cxsr - Configure CxSR state
- * @dev_priv: i915 device
- * @enable: Allow vs. disallow CxSR
- *
- * Allow or disallow the system to enter a special CxSR
- * (C-state self refresh) state. What typically happens in CxSR mode
- * is that several display FIFOs may get combined into a single larger
- * FIFO for a particular plane (so called max FIFO mode) to allow the
- * system to defer memory fetches longer, and the memory will enter
- * self refresh.
- *
- * Note that enabling CxSR does not guarantee that the system enter
- * this special mode, nor does it guarantee that the system stays
- * in that mode once entered. So this just allows/disallows the system
- * to autonomously utilize the CxSR mode. Other factors such as core
- * C-states will affect when/if the system actually enters/exits the
- * CxSR mode.
- *
- * Note that on VLV/CHV this actually only controls the max FIFO mode,
- * and the system is free to enter/exit memory self refresh at any time
- * even when the use of CxSR has been disallowed.
- *
- * While the system is actually in the CxSR/max FIFO mode, some plane
- * control registers will not get latched on vblank. Thus in order to
- * guarantee the system will respond to changes in the plane registers
- * we must always disallow CxSR prior to making changes to those registers.
- * Unfortunately the system will re-evaluate the CxSR conditions at
- * frame start which happens after vblank start (which is when the plane
- * registers would get latched), so we can't proceed with the plane update
- * during the same frame where we disallowed CxSR.
- *
- * Certain platforms also have a deeper HPLL SR mode. Fortunately the
- * HPLL SR mode depends on CxSR itself, so we don't have to hand hold
- * the hardware w.r.t. HPLL SR when writing to plane registers.
- * Disallowing just CxSR is sufficient.
- */
-bool intel_set_memory_cxsr(struct drm_i915_private *dev_priv, bool enable)
-{
-	bool ret;
-
-	mutex_lock(&dev_priv->display.wm.wm_mutex);
-	ret = _intel_set_memory_cxsr(dev_priv, enable);
-	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
-		dev_priv->display.wm.vlv.cxsr = enable;
-	else if (IS_G4X(dev_priv))
-		dev_priv->display.wm.g4x.cxsr = enable;
-	mutex_unlock(&dev_priv->display.wm.wm_mutex);
-
-	return ret;
-}
-
-/*
- * Latency for FIFO fetches is dependent on several factors:
- *   - memory configuration (speed, channels)
- *   - chipset
- *   - current MCH state
- * It can be fairly high in some situations, so here we assume a fairly
- * pessimal value.  It's a tradeoff between extra memory fetches (if we
- * set this value too high, the FIFO will fetch frequently to stay full)
- * and power consumption (set it too low to save power and we might see
- * FIFO underruns and display "flicker").
- *
- * A value of 5us seems to be a good balance; safe for very low end
- * platforms but not overly aggressive on lower latency configs.
- */
-static const int pessimal_latency_ns = 5000;
-
-#define VLV_FIFO_START(dsparb, dsparb2, lo_shift, hi_shift) \
-	((((dsparb) >> (lo_shift)) & 0xff) | ((((dsparb2) >> (hi_shift)) & 0x1) << 8))
-
-static void vlv_get_fifo_size(struct intel_crtc_state *crtc_state)
-{
-	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	struct vlv_fifo_state *fifo_state = &crtc_state->wm.vlv.fifo_state;
-	enum pipe pipe = crtc->pipe;
-	int sprite0_start, sprite1_start;
-	u32 dsparb, dsparb2, dsparb3;
-
-	switch (pipe) {
-	case PIPE_A:
-		dsparb = intel_uncore_read(&dev_priv->uncore, DSPARB);
-		dsparb2 = intel_uncore_read(&dev_priv->uncore, DSPARB2);
-		sprite0_start = VLV_FIFO_START(dsparb, dsparb2, 0, 0);
-		sprite1_start = VLV_FIFO_START(dsparb, dsparb2, 8, 4);
-		break;
-	case PIPE_B:
-		dsparb = intel_uncore_read(&dev_priv->uncore, DSPARB);
-		dsparb2 = intel_uncore_read(&dev_priv->uncore, DSPARB2);
-		sprite0_start = VLV_FIFO_START(dsparb, dsparb2, 16, 8);
-		sprite1_start = VLV_FIFO_START(dsparb, dsparb2, 24, 12);
-		break;
-	case PIPE_C:
-		dsparb2 = intel_uncore_read(&dev_priv->uncore, DSPARB2);
-		dsparb3 = intel_uncore_read(&dev_priv->uncore, DSPARB3);
-		sprite0_start = VLV_FIFO_START(dsparb3, dsparb2, 0, 16);
-		sprite1_start = VLV_FIFO_START(dsparb3, dsparb2, 8, 20);
-		break;
-	default:
-		MISSING_CASE(pipe);
-		return;
-	}
-
-	fifo_state->plane[PLANE_PRIMARY] = sprite0_start;
-	fifo_state->plane[PLANE_SPRITE0] = sprite1_start - sprite0_start;
-	fifo_state->plane[PLANE_SPRITE1] = 511 - sprite1_start;
-	fifo_state->plane[PLANE_CURSOR] = 63;
-}
-
-static int i9xx_get_fifo_size(struct drm_i915_private *dev_priv,
-			      enum i9xx_plane_id i9xx_plane)
-{
-	u32 dsparb = intel_uncore_read(&dev_priv->uncore, DSPARB);
-	int size;
-
-	size = dsparb & 0x7f;
-	if (i9xx_plane == PLANE_B)
-		size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - size;
-
-	drm_dbg_kms(&dev_priv->drm, "FIFO size - (0x%08x) %c: %d\n",
-		    dsparb, plane_name(i9xx_plane), size);
-
-	return size;
-}
-
-static int i830_get_fifo_size(struct drm_i915_private *dev_priv,
-			      enum i9xx_plane_id i9xx_plane)
-{
-	u32 dsparb = intel_uncore_read(&dev_priv->uncore, DSPARB);
-	int size;
-
-	size = dsparb & 0x1ff;
-	if (i9xx_plane == PLANE_B)
-		size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - size;
-	size >>= 1; /* Convert to cachelines */
-
-	drm_dbg_kms(&dev_priv->drm, "FIFO size - (0x%08x) %c: %d\n",
-		    dsparb, plane_name(i9xx_plane), size);
-
-	return size;
-}
-
-static int i845_get_fifo_size(struct drm_i915_private *dev_priv,
-			      enum i9xx_plane_id i9xx_plane)
-{
-	u32 dsparb = intel_uncore_read(&dev_priv->uncore, DSPARB);
-	int size;
-
-	size = dsparb & 0x7f;
-	size >>= 2; /* Convert to cachelines */
-
-	drm_dbg_kms(&dev_priv->drm, "FIFO size - (0x%08x) %c: %d\n",
-		    dsparb, plane_name(i9xx_plane), size);
-
-	return size;
-}
-
-/* Pineview has different values for various configs */
-static const struct intel_watermark_params pnv_display_wm = {
-	.fifo_size = PINEVIEW_DISPLAY_FIFO,
-	.max_wm = PINEVIEW_MAX_WM,
-	.default_wm = PINEVIEW_DFT_WM,
-	.guard_size = PINEVIEW_GUARD_WM,
-	.cacheline_size = PINEVIEW_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params pnv_display_hplloff_wm = {
-	.fifo_size = PINEVIEW_DISPLAY_FIFO,
-	.max_wm = PINEVIEW_MAX_WM,
-	.default_wm = PINEVIEW_DFT_HPLLOFF_WM,
-	.guard_size = PINEVIEW_GUARD_WM,
-	.cacheline_size = PINEVIEW_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params pnv_cursor_wm = {
-	.fifo_size = PINEVIEW_CURSOR_FIFO,
-	.max_wm = PINEVIEW_CURSOR_MAX_WM,
-	.default_wm = PINEVIEW_CURSOR_DFT_WM,
-	.guard_size = PINEVIEW_CURSOR_GUARD_WM,
-	.cacheline_size = PINEVIEW_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params pnv_cursor_hplloff_wm = {
-	.fifo_size = PINEVIEW_CURSOR_FIFO,
-	.max_wm = PINEVIEW_CURSOR_MAX_WM,
-	.default_wm = PINEVIEW_CURSOR_DFT_WM,
-	.guard_size = PINEVIEW_CURSOR_GUARD_WM,
-	.cacheline_size = PINEVIEW_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params i965_cursor_wm_info = {
-	.fifo_size = I965_CURSOR_FIFO,
-	.max_wm = I965_CURSOR_MAX_WM,
-	.default_wm = I965_CURSOR_DFT_WM,
-	.guard_size = 2,
-	.cacheline_size = I915_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params i945_wm_info = {
-	.fifo_size = I945_FIFO_SIZE,
-	.max_wm = I915_MAX_WM,
-	.default_wm = 1,
-	.guard_size = 2,
-	.cacheline_size = I915_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params i915_wm_info = {
-	.fifo_size = I915_FIFO_SIZE,
-	.max_wm = I915_MAX_WM,
-	.default_wm = 1,
-	.guard_size = 2,
-	.cacheline_size = I915_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params i830_a_wm_info = {
-	.fifo_size = I855GM_FIFO_SIZE,
-	.max_wm = I915_MAX_WM,
-	.default_wm = 1,
-	.guard_size = 2,
-	.cacheline_size = I830_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params i830_bc_wm_info = {
-	.fifo_size = I855GM_FIFO_SIZE,
-	.max_wm = I915_MAX_WM/2,
-	.default_wm = 1,
-	.guard_size = 2,
-	.cacheline_size = I830_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params i845_wm_info = {
-	.fifo_size = I830_FIFO_SIZE,
-	.max_wm = I915_MAX_WM,
-	.default_wm = 1,
-	.guard_size = 2,
-	.cacheline_size = I830_FIFO_LINE_SIZE,
-};
-
-/**
- * intel_wm_method1 - Method 1 / "small buffer" watermark formula
- * @pixel_rate: Pipe pixel rate in kHz
- * @cpp: Plane bytes per pixel
- * @latency: Memory wakeup latency in 0.1us units
- *
- * Compute the watermark using the method 1 or "small buffer"
- * formula. The caller may additonally add extra cachelines
- * to account for TLB misses and clock crossings.
- *
- * This method is concerned with the short term drain rate
- * of the FIFO, ie. it does not account for blanking periods
- * which would effectively reduce the average drain rate across
- * a longer period. The name "small" refers to the fact the
- * FIFO is relatively small compared to the amount of data
- * fetched.
- *
- * The FIFO level vs. time graph might look something like:
- *
- *   |\   |\
- *   | \  | \
- * __---__---__ (- plane active, _ blanking)
- * -> time
- *
- * or perhaps like this:
- *
- *   |\|\  |\|\
- * __----__----__ (- plane active, _ blanking)
- * -> time
- *
- * Returns:
- * The watermark in bytes
- */
-static unsigned int intel_wm_method1(unsigned int pixel_rate,
-				     unsigned int cpp,
-				     unsigned int latency)
-{
-	u64 ret;
-
-	ret = mul_u32_u32(pixel_rate, cpp * latency);
-	ret = DIV_ROUND_UP_ULL(ret, 10000);
-
-	return ret;
-}
-
-/**
- * intel_wm_method2 - Method 2 / "large buffer" watermark formula
- * @pixel_rate: Pipe pixel rate in kHz
- * @htotal: Pipe horizontal total
- * @width: Plane width in pixels
- * @cpp: Plane bytes per pixel
- * @latency: Memory wakeup latency in 0.1us units
- *
- * Compute the watermark using the method 2 or "large buffer"
- * formula. The caller may additonally add extra cachelines
- * to account for TLB misses and clock crossings.
- *
- * This method is concerned with the long term drain rate
- * of the FIFO, ie. it does account for blanking periods
- * which effectively reduce the average drain rate across
- * a longer period. The name "large" refers to the fact the
- * FIFO is relatively large compared to the amount of data
- * fetched.
- *
- * The FIFO level vs. time graph might look something like:
- *
- *    |\___       |\___
- *    |    \___   |    \___
- *    |        \  |        \
- * __ --__--__--__--__--__--__ (- plane active, _ blanking)
- * -> time
- *
- * Returns:
- * The watermark in bytes
- */
-static unsigned int intel_wm_method2(unsigned int pixel_rate,
-				     unsigned int htotal,
-				     unsigned int width,
-				     unsigned int cpp,
-				     unsigned int latency)
-{
-	unsigned int ret;
-
-	/*
-	 * FIXME remove once all users are computing
-	 * watermarks in the correct place.
-	 */
-	if (WARN_ON_ONCE(htotal == 0))
-		htotal = 1;
-
-	ret = (latency * pixel_rate) / (htotal * 10000);
-	ret = (ret + 1) * width * cpp;
-
-	return ret;
-}
-
-/**
- * intel_calculate_wm - calculate watermark level
- * @pixel_rate: pixel clock
- * @wm: chip FIFO params
- * @fifo_size: size of the FIFO buffer
- * @cpp: bytes per pixel
- * @latency_ns: memory latency for the platform
- *
- * Calculate the watermark level (the level at which the display plane will
- * start fetching from memory again).  Each chip has a different display
- * FIFO size and allocation, so the caller needs to figure that out and pass
- * in the correct intel_watermark_params structure.
- *
- * As the pixel clock runs, the FIFO will be drained at a rate that depends
- * on the pixel size.  When it reaches the watermark level, it'll start
- * fetching FIFO line sized based chunks from memory until the FIFO fills
- * past the watermark point.  If the FIFO drains completely, a FIFO underrun
- * will occur, and a display engine hang could result.
- */
-static unsigned int intel_calculate_wm(int pixel_rate,
-				       const struct intel_watermark_params *wm,
-				       int fifo_size, int cpp,
-				       unsigned int latency_ns)
-{
-	int entries, wm_size;
-
-	/*
-	 * Note: we need to make sure we don't overflow for various clock &
-	 * latency values.
-	 * clocks go from a few thousand to several hundred thousand.
-	 * latency is usually a few thousand
-	 */
-	entries = intel_wm_method1(pixel_rate, cpp,
-				   latency_ns / 100);
-	entries = DIV_ROUND_UP(entries, wm->cacheline_size) +
-		wm->guard_size;
-	DRM_DEBUG_KMS("FIFO entries required for mode: %d\n", entries);
-
-	wm_size = fifo_size - entries;
-	DRM_DEBUG_KMS("FIFO watermark level: %d\n", wm_size);
-
-	/* Don't promote wm_size to unsigned... */
-	if (wm_size > wm->max_wm)
-		wm_size = wm->max_wm;
-	if (wm_size <= 0)
-		wm_size = wm->default_wm;
-
-	/*
-	 * Bspec seems to indicate that the value shouldn't be lower than
-	 * 'burst size + 1'. Certainly 830 is quite unhappy with low values.
-	 * Lets go for 8 which is the burst size since certain platforms
-	 * already use a hardcoded 8 (which is what the spec says should be
-	 * done).
-	 */
-	if (wm_size <= 8)
-		wm_size = 8;
-
-	return wm_size;
-}
-
-static bool is_disabling(int old, int new, int threshold)
-{
-	return old >= threshold && new < threshold;
-}
-
-static bool is_enabling(int old, int new, int threshold)
-{
-	return old < threshold && new >= threshold;
-}
-
-static int intel_wm_num_levels(struct drm_i915_private *dev_priv)
-{
-	return dev_priv->display.wm.max_level + 1;
-}
-
-bool intel_wm_plane_visible(const struct intel_crtc_state *crtc_state,
-			    const struct intel_plane_state *plane_state)
-{
-	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
-
-	/* FIXME check the 'enable' instead */
-	if (!crtc_state->hw.active)
-		return false;
-
-	/*
-	 * Treat cursor with fb as always visible since cursor updates
-	 * can happen faster than the vrefresh rate, and the current
-	 * watermark code doesn't handle that correctly. Cursor updates
-	 * which set/clear the fb or change the cursor size are going
-	 * to get throttled by intel_legacy_cursor_update() to work
-	 * around this problem with the watermark code.
-	 */
-	if (plane->id == PLANE_CURSOR)
-		return plane_state->hw.fb != NULL;
-	else
-		return plane_state->uapi.visible;
-}
-
-static bool intel_crtc_active(struct intel_crtc *crtc)
-{
-	/* Be paranoid as we can arrive here with only partial
-	 * state retrieved from the hardware during setup.
-	 *
-	 * We can ditch the adjusted_mode.crtc_clock check as soon
-	 * as Haswell has gained clock readout/fastboot support.
-	 *
-	 * We can ditch the crtc->primary->state->fb check as soon as we can
-	 * properly reconstruct framebuffers.
-	 *
-	 * FIXME: The intel_crtc->active here should be switched to
-	 * crtc->state->active once we have proper CRTC states wired up
-	 * for atomic.
-	 */
-	return crtc && crtc->active && crtc->base.primary->state->fb &&
-		crtc->config->hw.adjusted_mode.crtc_clock;
-}
-
-static struct intel_crtc *single_enabled_crtc(struct drm_i915_private *dev_priv)
-{
-	struct intel_crtc *crtc, *enabled = NULL;
-
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		if (intel_crtc_active(crtc)) {
-			if (enabled)
-				return NULL;
-			enabled = crtc;
-		}
-	}
-
-	return enabled;
-}
-
-static void pnv_update_wm(struct drm_i915_private *dev_priv)
-{
-	struct intel_crtc *crtc;
-	const struct cxsr_latency *latency;
-	u32 reg;
-	unsigned int wm;
-
-	latency = intel_get_cxsr_latency(!IS_MOBILE(dev_priv),
-					 dev_priv->is_ddr3,
-					 dev_priv->fsb_freq,
-					 dev_priv->mem_freq);
-	if (!latency) {
-		drm_dbg_kms(&dev_priv->drm,
-			    "Unknown FSB/MEM found, disable CxSR\n");
-		intel_set_memory_cxsr(dev_priv, false);
-		return;
-	}
-
-	crtc = single_enabled_crtc(dev_priv);
-	if (crtc) {
-		const struct drm_framebuffer *fb =
-			crtc->base.primary->state->fb;
-		int pixel_rate = crtc->config->pixel_rate;
-		int cpp = fb->format->cpp[0];
-
-		/* Display SR */
-		wm = intel_calculate_wm(pixel_rate, &pnv_display_wm,
-					pnv_display_wm.fifo_size,
-					cpp, latency->display_sr);
-		reg = intel_uncore_read(&dev_priv->uncore, DSPFW1);
-		reg &= ~DSPFW_SR_MASK;
-		reg |= FW_WM(wm, SR);
-		intel_uncore_write(&dev_priv->uncore, DSPFW1, reg);
-		drm_dbg_kms(&dev_priv->drm, "DSPFW1 register is %x\n", reg);
-
-		/* cursor SR */
-		wm = intel_calculate_wm(pixel_rate, &pnv_cursor_wm,
-					pnv_display_wm.fifo_size,
-					4, latency->cursor_sr);
-		reg = intel_uncore_read(&dev_priv->uncore, DSPFW3);
-		reg &= ~DSPFW_CURSOR_SR_MASK;
-		reg |= FW_WM(wm, CURSOR_SR);
-		intel_uncore_write(&dev_priv->uncore, DSPFW3, reg);
-
-		/* Display HPLL off SR */
-		wm = intel_calculate_wm(pixel_rate, &pnv_display_hplloff_wm,
-					pnv_display_hplloff_wm.fifo_size,
-					cpp, latency->display_hpll_disable);
-		reg = intel_uncore_read(&dev_priv->uncore, DSPFW3);
-		reg &= ~DSPFW_HPLL_SR_MASK;
-		reg |= FW_WM(wm, HPLL_SR);
-		intel_uncore_write(&dev_priv->uncore, DSPFW3, reg);
-
-		/* cursor HPLL off SR */
-		wm = intel_calculate_wm(pixel_rate, &pnv_cursor_hplloff_wm,
-					pnv_display_hplloff_wm.fifo_size,
-					4, latency->cursor_hpll_disable);
-		reg = intel_uncore_read(&dev_priv->uncore, DSPFW3);
-		reg &= ~DSPFW_HPLL_CURSOR_MASK;
-		reg |= FW_WM(wm, HPLL_CURSOR);
-		intel_uncore_write(&dev_priv->uncore, DSPFW3, reg);
-		drm_dbg_kms(&dev_priv->drm, "DSPFW3 register is %x\n", reg);
-
-		intel_set_memory_cxsr(dev_priv, true);
-	} else {
-		intel_set_memory_cxsr(dev_priv, false);
-	}
-}
-
-/*
- * Documentation says:
- * "If the line size is small, the TLB fetches can get in the way of the
- *  data fetches, causing some lag in the pixel data return which is not
- *  accounted for in the above formulas. The following adjustment only
- *  needs to be applied if eight whole lines fit in the buffer at once.
- *  The WM is adjusted upwards by the difference between the FIFO size
- *  and the size of 8 whole lines. This adjustment is always performed
- *  in the actual pixel depth regardless of whether FBC is enabled or not."
- */
-static unsigned int g4x_tlb_miss_wa(int fifo_size, int width, int cpp)
-{
-	int tlb_miss = fifo_size * 64 - width * cpp * 8;
-
-	return max(0, tlb_miss);
-}
-
-static void g4x_write_wm_values(struct drm_i915_private *dev_priv,
-				const struct g4x_wm_values *wm)
-{
-	enum pipe pipe;
-
-	for_each_pipe(dev_priv, pipe)
-		trace_g4x_wm(intel_crtc_for_pipe(dev_priv, pipe), wm);
-
-	intel_uncore_write(&dev_priv->uncore, DSPFW1,
-		   FW_WM(wm->sr.plane, SR) |
-		   FW_WM(wm->pipe[PIPE_B].plane[PLANE_CURSOR], CURSORB) |
-		   FW_WM(wm->pipe[PIPE_B].plane[PLANE_PRIMARY], PLANEB) |
-		   FW_WM(wm->pipe[PIPE_A].plane[PLANE_PRIMARY], PLANEA));
-	intel_uncore_write(&dev_priv->uncore, DSPFW2,
-		   (wm->fbc_en ? DSPFW_FBC_SR_EN : 0) |
-		   FW_WM(wm->sr.fbc, FBC_SR) |
-		   FW_WM(wm->hpll.fbc, FBC_HPLL_SR) |
-		   FW_WM(wm->pipe[PIPE_B].plane[PLANE_SPRITE0], SPRITEB) |
-		   FW_WM(wm->pipe[PIPE_A].plane[PLANE_CURSOR], CURSORA) |
-		   FW_WM(wm->pipe[PIPE_A].plane[PLANE_SPRITE0], SPRITEA));
-	intel_uncore_write(&dev_priv->uncore, DSPFW3,
-		   (wm->hpll_en ? DSPFW_HPLL_SR_EN : 0) |
-		   FW_WM(wm->sr.cursor, CURSOR_SR) |
-		   FW_WM(wm->hpll.cursor, HPLL_CURSOR) |
-		   FW_WM(wm->hpll.plane, HPLL_SR));
-
-	intel_uncore_posting_read(&dev_priv->uncore, DSPFW1);
-}
-
-#define FW_WM_VLV(value, plane) \
-	(((value) << DSPFW_ ## plane ## _SHIFT) & DSPFW_ ## plane ## _MASK_VLV)
-
-static void vlv_write_wm_values(struct drm_i915_private *dev_priv,
-				const struct vlv_wm_values *wm)
-{
-	enum pipe pipe;
-
-	for_each_pipe(dev_priv, pipe) {
-		trace_vlv_wm(intel_crtc_for_pipe(dev_priv, pipe), wm);
-
-		intel_uncore_write(&dev_priv->uncore, VLV_DDL(pipe),
-			   (wm->ddl[pipe].plane[PLANE_CURSOR] << DDL_CURSOR_SHIFT) |
-			   (wm->ddl[pipe].plane[PLANE_SPRITE1] << DDL_SPRITE_SHIFT(1)) |
-			   (wm->ddl[pipe].plane[PLANE_SPRITE0] << DDL_SPRITE_SHIFT(0)) |
-			   (wm->ddl[pipe].plane[PLANE_PRIMARY] << DDL_PLANE_SHIFT));
-	}
-
-	/*
-	 * Zero the (unused) WM1 watermarks, and also clear all the
-	 * high order bits so that there are no out of bounds values
-	 * present in the registers during the reprogramming.
-	 */
-	intel_uncore_write(&dev_priv->uncore, DSPHOWM, 0);
-	intel_uncore_write(&dev_priv->uncore, DSPHOWM1, 0);
-	intel_uncore_write(&dev_priv->uncore, DSPFW4, 0);
-	intel_uncore_write(&dev_priv->uncore, DSPFW5, 0);
-	intel_uncore_write(&dev_priv->uncore, DSPFW6, 0);
-
-	intel_uncore_write(&dev_priv->uncore, DSPFW1,
-		   FW_WM(wm->sr.plane, SR) |
-		   FW_WM(wm->pipe[PIPE_B].plane[PLANE_CURSOR], CURSORB) |
-		   FW_WM_VLV(wm->pipe[PIPE_B].plane[PLANE_PRIMARY], PLANEB) |
-		   FW_WM_VLV(wm->pipe[PIPE_A].plane[PLANE_PRIMARY], PLANEA));
-	intel_uncore_write(&dev_priv->uncore, DSPFW2,
-		   FW_WM_VLV(wm->pipe[PIPE_A].plane[PLANE_SPRITE1], SPRITEB) |
-		   FW_WM(wm->pipe[PIPE_A].plane[PLANE_CURSOR], CURSORA) |
-		   FW_WM_VLV(wm->pipe[PIPE_A].plane[PLANE_SPRITE0], SPRITEA));
-	intel_uncore_write(&dev_priv->uncore, DSPFW3,
-		   FW_WM(wm->sr.cursor, CURSOR_SR));
-
-	if (IS_CHERRYVIEW(dev_priv)) {
-		intel_uncore_write(&dev_priv->uncore, DSPFW7_CHV,
-			   FW_WM_VLV(wm->pipe[PIPE_B].plane[PLANE_SPRITE1], SPRITED) |
-			   FW_WM_VLV(wm->pipe[PIPE_B].plane[PLANE_SPRITE0], SPRITEC));
-		intel_uncore_write(&dev_priv->uncore, DSPFW8_CHV,
-			   FW_WM_VLV(wm->pipe[PIPE_C].plane[PLANE_SPRITE1], SPRITEF) |
-			   FW_WM_VLV(wm->pipe[PIPE_C].plane[PLANE_SPRITE0], SPRITEE));
-		intel_uncore_write(&dev_priv->uncore, DSPFW9_CHV,
-			   FW_WM_VLV(wm->pipe[PIPE_C].plane[PLANE_PRIMARY], PLANEC) |
-			   FW_WM(wm->pipe[PIPE_C].plane[PLANE_CURSOR], CURSORC));
-		intel_uncore_write(&dev_priv->uncore, DSPHOWM,
-			   FW_WM(wm->sr.plane >> 9, SR_HI) |
-			   FW_WM(wm->pipe[PIPE_C].plane[PLANE_SPRITE1] >> 8, SPRITEF_HI) |
-			   FW_WM(wm->pipe[PIPE_C].plane[PLANE_SPRITE0] >> 8, SPRITEE_HI) |
-			   FW_WM(wm->pipe[PIPE_C].plane[PLANE_PRIMARY] >> 8, PLANEC_HI) |
-			   FW_WM(wm->pipe[PIPE_B].plane[PLANE_SPRITE1] >> 8, SPRITED_HI) |
-			   FW_WM(wm->pipe[PIPE_B].plane[PLANE_SPRITE0] >> 8, SPRITEC_HI) |
-			   FW_WM(wm->pipe[PIPE_B].plane[PLANE_PRIMARY] >> 8, PLANEB_HI) |
-			   FW_WM(wm->pipe[PIPE_A].plane[PLANE_SPRITE1] >> 8, SPRITEB_HI) |
-			   FW_WM(wm->pipe[PIPE_A].plane[PLANE_SPRITE0] >> 8, SPRITEA_HI) |
-			   FW_WM(wm->pipe[PIPE_A].plane[PLANE_PRIMARY] >> 8, PLANEA_HI));
-	} else {
-		intel_uncore_write(&dev_priv->uncore, DSPFW7,
-			   FW_WM_VLV(wm->pipe[PIPE_B].plane[PLANE_SPRITE1], SPRITED) |
-			   FW_WM_VLV(wm->pipe[PIPE_B].plane[PLANE_SPRITE0], SPRITEC));
-		intel_uncore_write(&dev_priv->uncore, DSPHOWM,
-			   FW_WM(wm->sr.plane >> 9, SR_HI) |
-			   FW_WM(wm->pipe[PIPE_B].plane[PLANE_SPRITE1] >> 8, SPRITED_HI) |
-			   FW_WM(wm->pipe[PIPE_B].plane[PLANE_SPRITE0] >> 8, SPRITEC_HI) |
-			   FW_WM(wm->pipe[PIPE_B].plane[PLANE_PRIMARY] >> 8, PLANEB_HI) |
-			   FW_WM(wm->pipe[PIPE_A].plane[PLANE_SPRITE1] >> 8, SPRITEB_HI) |
-			   FW_WM(wm->pipe[PIPE_A].plane[PLANE_SPRITE0] >> 8, SPRITEA_HI) |
-			   FW_WM(wm->pipe[PIPE_A].plane[PLANE_PRIMARY] >> 8, PLANEA_HI));
-	}
-
-	intel_uncore_posting_read(&dev_priv->uncore, DSPFW1);
-}
-
-#undef FW_WM_VLV
-
-static void g4x_setup_wm_latency(struct drm_i915_private *dev_priv)
-{
-	/* all latencies in usec */
-	dev_priv->display.wm.pri_latency[G4X_WM_LEVEL_NORMAL] = 5;
-	dev_priv->display.wm.pri_latency[G4X_WM_LEVEL_SR] = 12;
-	dev_priv->display.wm.pri_latency[G4X_WM_LEVEL_HPLL] = 35;
-
-	dev_priv->display.wm.max_level = G4X_WM_LEVEL_HPLL;
-}
-
-static int g4x_plane_fifo_size(enum plane_id plane_id, int level)
-{
-	/*
-	 * DSPCNTR[13] supposedly controls whether the
-	 * primary plane can use the FIFO space otherwise
-	 * reserved for the sprite plane. It's not 100% clear
-	 * what the actual FIFO size is, but it looks like we
-	 * can happily set both primary and sprite watermarks
-	 * up to 127 cachelines. So that would seem to mean
-	 * that either DSPCNTR[13] doesn't do anything, or that
-	 * the total FIFO is >= 256 cachelines in size. Either
-	 * way, we don't seem to have to worry about this
-	 * repartitioning as the maximum watermark value the
-	 * register can hold for each plane is lower than the
-	 * minimum FIFO size.
-	 */
-	switch (plane_id) {
-	case PLANE_CURSOR:
-		return 63;
-	case PLANE_PRIMARY:
-		return level == G4X_WM_LEVEL_NORMAL ? 127 : 511;
-	case PLANE_SPRITE0:
-		return level == G4X_WM_LEVEL_NORMAL ? 127 : 0;
-	default:
-		MISSING_CASE(plane_id);
-		return 0;
-	}
-}
-
-static int g4x_fbc_fifo_size(int level)
-{
-	switch (level) {
-	case G4X_WM_LEVEL_SR:
-		return 7;
-	case G4X_WM_LEVEL_HPLL:
-		return 15;
-	default:
-		MISSING_CASE(level);
-		return 0;
-	}
-}
-
-static u16 g4x_compute_wm(const struct intel_crtc_state *crtc_state,
-			  const struct intel_plane_state *plane_state,
-			  int level)
-{
-	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
-	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
-	const struct drm_display_mode *pipe_mode =
-		&crtc_state->hw.pipe_mode;
-	unsigned int latency = dev_priv->display.wm.pri_latency[level] * 10;
-	unsigned int pixel_rate, htotal, cpp, width, wm;
-
-	if (latency == 0)
-		return USHRT_MAX;
-
-	if (!intel_wm_plane_visible(crtc_state, plane_state))
-		return 0;
-
-	cpp = plane_state->hw.fb->format->cpp[0];
-
-	/*
-	 * WaUse32BppForSRWM:ctg,elk
-	 *
-	 * The spec fails to list this restriction for the
-	 * HPLL watermark, which seems a little strange.
-	 * Let's use 32bpp for the HPLL watermark as well.
-	 */
-	if (plane->id == PLANE_PRIMARY &&
-	    level != G4X_WM_LEVEL_NORMAL)
-		cpp = max(cpp, 4u);
-
-	pixel_rate = crtc_state->pixel_rate;
-	htotal = pipe_mode->crtc_htotal;
-	width = drm_rect_width(&plane_state->uapi.src) >> 16;
-
-	if (plane->id == PLANE_CURSOR) {
-		wm = intel_wm_method2(pixel_rate, htotal, width, cpp, latency);
-	} else if (plane->id == PLANE_PRIMARY &&
-		   level == G4X_WM_LEVEL_NORMAL) {
-		wm = intel_wm_method1(pixel_rate, cpp, latency);
-	} else {
-		unsigned int small, large;
-
-		small = intel_wm_method1(pixel_rate, cpp, latency);
-		large = intel_wm_method2(pixel_rate, htotal, width, cpp, latency);
-
-		wm = min(small, large);
-	}
-
-	wm += g4x_tlb_miss_wa(g4x_plane_fifo_size(plane->id, level),
-			      width, cpp);
-
-	wm = DIV_ROUND_UP(wm, 64) + 2;
-
-	return min_t(unsigned int, wm, USHRT_MAX);
-}
-
-static bool g4x_raw_plane_wm_set(struct intel_crtc_state *crtc_state,
-				 int level, enum plane_id plane_id, u16 value)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
-	bool dirty = false;
-
-	for (; level < intel_wm_num_levels(dev_priv); level++) {
-		struct g4x_pipe_wm *raw = &crtc_state->wm.g4x.raw[level];
-
-		dirty |= raw->plane[plane_id] != value;
-		raw->plane[plane_id] = value;
-	}
-
-	return dirty;
-}
-
-static bool g4x_raw_fbc_wm_set(struct intel_crtc_state *crtc_state,
-			       int level, u16 value)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
-	bool dirty = false;
-
-	/* NORMAL level doesn't have an FBC watermark */
-	level = max(level, G4X_WM_LEVEL_SR);
-
-	for (; level < intel_wm_num_levels(dev_priv); level++) {
-		struct g4x_pipe_wm *raw = &crtc_state->wm.g4x.raw[level];
-
-		dirty |= raw->fbc != value;
-		raw->fbc = value;
-	}
-
-	return dirty;
-}
-
-static u32 ilk_compute_fbc_wm(const struct intel_crtc_state *crtc_state,
-			      const struct intel_plane_state *plane_state,
-			      u32 pri_val);
-
-static bool g4x_raw_plane_wm_compute(struct intel_crtc_state *crtc_state,
-				     const struct intel_plane_state *plane_state)
-{
-	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
-	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
-	int num_levels = intel_wm_num_levels(to_i915(plane->base.dev));
-	enum plane_id plane_id = plane->id;
-	bool dirty = false;
-	int level;
-
-	if (!intel_wm_plane_visible(crtc_state, plane_state)) {
-		dirty |= g4x_raw_plane_wm_set(crtc_state, 0, plane_id, 0);
-		if (plane_id == PLANE_PRIMARY)
-			dirty |= g4x_raw_fbc_wm_set(crtc_state, 0, 0);
-		goto out;
-	}
-
-	for (level = 0; level < num_levels; level++) {
-		struct g4x_pipe_wm *raw = &crtc_state->wm.g4x.raw[level];
-		int wm, max_wm;
-
-		wm = g4x_compute_wm(crtc_state, plane_state, level);
-		max_wm = g4x_plane_fifo_size(plane_id, level);
-
-		if (wm > max_wm)
-			break;
-
-		dirty |= raw->plane[plane_id] != wm;
-		raw->plane[plane_id] = wm;
-
-		if (plane_id != PLANE_PRIMARY ||
-		    level == G4X_WM_LEVEL_NORMAL)
-			continue;
-
-		wm = ilk_compute_fbc_wm(crtc_state, plane_state,
-					raw->plane[plane_id]);
-		max_wm = g4x_fbc_fifo_size(level);
-
-		/*
-		 * FBC wm is not mandatory as we
-		 * can always just disable its use.
-		 */
-		if (wm > max_wm)
-			wm = USHRT_MAX;
-
-		dirty |= raw->fbc != wm;
-		raw->fbc = wm;
-	}
-
-	/* mark watermarks as invalid */
-	dirty |= g4x_raw_plane_wm_set(crtc_state, level, plane_id, USHRT_MAX);
-
-	if (plane_id == PLANE_PRIMARY)
-		dirty |= g4x_raw_fbc_wm_set(crtc_state, level, USHRT_MAX);
-
- out:
-	if (dirty) {
-		drm_dbg_kms(&dev_priv->drm,
-			    "%s watermarks: normal=%d, SR=%d, HPLL=%d\n",
-			    plane->base.name,
-			    crtc_state->wm.g4x.raw[G4X_WM_LEVEL_NORMAL].plane[plane_id],
-			    crtc_state->wm.g4x.raw[G4X_WM_LEVEL_SR].plane[plane_id],
-			    crtc_state->wm.g4x.raw[G4X_WM_LEVEL_HPLL].plane[plane_id]);
-
-		if (plane_id == PLANE_PRIMARY)
-			drm_dbg_kms(&dev_priv->drm,
-				    "FBC watermarks: SR=%d, HPLL=%d\n",
-				    crtc_state->wm.g4x.raw[G4X_WM_LEVEL_SR].fbc,
-				    crtc_state->wm.g4x.raw[G4X_WM_LEVEL_HPLL].fbc);
-	}
-
-	return dirty;
-}
-
-static bool g4x_raw_plane_wm_is_valid(const struct intel_crtc_state *crtc_state,
-				      enum plane_id plane_id, int level)
-{
-	const struct g4x_pipe_wm *raw = &crtc_state->wm.g4x.raw[level];
-
-	return raw->plane[plane_id] <= g4x_plane_fifo_size(plane_id, level);
-}
-
-static bool g4x_raw_crtc_wm_is_valid(const struct intel_crtc_state *crtc_state,
-				     int level)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
-
-	if (level > dev_priv->display.wm.max_level)
-		return false;
-
-	return g4x_raw_plane_wm_is_valid(crtc_state, PLANE_PRIMARY, level) &&
-		g4x_raw_plane_wm_is_valid(crtc_state, PLANE_SPRITE0, level) &&
-		g4x_raw_plane_wm_is_valid(crtc_state, PLANE_CURSOR, level);
-}
-
-/* mark all levels starting from 'level' as invalid */
-static void g4x_invalidate_wms(struct intel_crtc *crtc,
-			       struct g4x_wm_state *wm_state, int level)
-{
-	if (level <= G4X_WM_LEVEL_NORMAL) {
-		enum plane_id plane_id;
-
-		for_each_plane_id_on_crtc(crtc, plane_id)
-			wm_state->wm.plane[plane_id] = USHRT_MAX;
-	}
-
-	if (level <= G4X_WM_LEVEL_SR) {
-		wm_state->cxsr = false;
-		wm_state->sr.cursor = USHRT_MAX;
-		wm_state->sr.plane = USHRT_MAX;
-		wm_state->sr.fbc = USHRT_MAX;
-	}
-
-	if (level <= G4X_WM_LEVEL_HPLL) {
-		wm_state->hpll_en = false;
-		wm_state->hpll.cursor = USHRT_MAX;
-		wm_state->hpll.plane = USHRT_MAX;
-		wm_state->hpll.fbc = USHRT_MAX;
-	}
-}
-
-static bool g4x_compute_fbc_en(const struct g4x_wm_state *wm_state,
-			       int level)
-{
-	if (level < G4X_WM_LEVEL_SR)
-		return false;
-
-	if (level >= G4X_WM_LEVEL_SR &&
-	    wm_state->sr.fbc > g4x_fbc_fifo_size(G4X_WM_LEVEL_SR))
-		return false;
-
-	if (level >= G4X_WM_LEVEL_HPLL &&
-	    wm_state->hpll.fbc > g4x_fbc_fifo_size(G4X_WM_LEVEL_HPLL))
-		return false;
-
-	return true;
-}
-
-static int _g4x_compute_pipe_wm(struct intel_crtc_state *crtc_state)
-{
-	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
-	struct g4x_wm_state *wm_state = &crtc_state->wm.g4x.optimal;
-	u8 active_planes = crtc_state->active_planes & ~BIT(PLANE_CURSOR);
-	const struct g4x_pipe_wm *raw;
-	enum plane_id plane_id;
-	int level;
-
-	level = G4X_WM_LEVEL_NORMAL;
-	if (!g4x_raw_crtc_wm_is_valid(crtc_state, level))
-		goto out;
-
-	raw = &crtc_state->wm.g4x.raw[level];
-	for_each_plane_id_on_crtc(crtc, plane_id)
-		wm_state->wm.plane[plane_id] = raw->plane[plane_id];
-
-	level = G4X_WM_LEVEL_SR;
-	if (!g4x_raw_crtc_wm_is_valid(crtc_state, level))
-		goto out;
-
-	raw = &crtc_state->wm.g4x.raw[level];
-	wm_state->sr.plane = raw->plane[PLANE_PRIMARY];
-	wm_state->sr.cursor = raw->plane[PLANE_CURSOR];
-	wm_state->sr.fbc = raw->fbc;
-
-	wm_state->cxsr = active_planes == BIT(PLANE_PRIMARY);
-
-	level = G4X_WM_LEVEL_HPLL;
-	if (!g4x_raw_crtc_wm_is_valid(crtc_state, level))
-		goto out;
-
-	raw = &crtc_state->wm.g4x.raw[level];
-	wm_state->hpll.plane = raw->plane[PLANE_PRIMARY];
-	wm_state->hpll.cursor = raw->plane[PLANE_CURSOR];
-	wm_state->hpll.fbc = raw->fbc;
-
-	wm_state->hpll_en = wm_state->cxsr;
-
-	level++;
-
- out:
-	if (level == G4X_WM_LEVEL_NORMAL)
-		return -EINVAL;
-
-	/* invalidate the higher levels */
-	g4x_invalidate_wms(crtc, wm_state, level);
-
-	/*
-	 * Determine if the FBC watermark(s) can be used. IF
-	 * this isn't the case we prefer to disable the FBC
-	 * watermark(s) rather than disable the SR/HPLL
-	 * level(s) entirely. 'level-1' is the highest valid
-	 * level here.
-	 */
-	wm_state->fbc_en = g4x_compute_fbc_en(wm_state, level - 1);
-
-	return 0;
-}
-
-static int g4x_compute_pipe_wm(struct intel_atomic_state *state,
-			       struct intel_crtc *crtc)
-{
-	struct intel_crtc_state *crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-	const struct intel_plane_state *old_plane_state;
-	const struct intel_plane_state *new_plane_state;
-	struct intel_plane *plane;
-	unsigned int dirty = 0;
-	int i;
-
-	for_each_oldnew_intel_plane_in_state(state, plane,
-					     old_plane_state,
-					     new_plane_state, i) {
-		if (new_plane_state->hw.crtc != &crtc->base &&
-		    old_plane_state->hw.crtc != &crtc->base)
-			continue;
-
-		if (g4x_raw_plane_wm_compute(crtc_state, new_plane_state))
-			dirty |= BIT(plane->id);
-	}
-
-	if (!dirty)
-		return 0;
-
-	return _g4x_compute_pipe_wm(crtc_state);
-}
-
-static int g4x_compute_intermediate_wm(struct intel_atomic_state *state,
-				       struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	struct intel_crtc_state *new_crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-	const struct intel_crtc_state *old_crtc_state =
-		intel_atomic_get_old_crtc_state(state, crtc);
-	struct g4x_wm_state *intermediate = &new_crtc_state->wm.g4x.intermediate;
-	const struct g4x_wm_state *optimal = &new_crtc_state->wm.g4x.optimal;
-	const struct g4x_wm_state *active = &old_crtc_state->wm.g4x.optimal;
-	enum plane_id plane_id;
-
-	if (!new_crtc_state->hw.active ||
-	    drm_atomic_crtc_needs_modeset(&new_crtc_state->uapi)) {
-		*intermediate = *optimal;
-
-		intermediate->cxsr = false;
-		intermediate->hpll_en = false;
-		goto out;
-	}
-
-	intermediate->cxsr = optimal->cxsr && active->cxsr &&
-		!new_crtc_state->disable_cxsr;
-	intermediate->hpll_en = optimal->hpll_en && active->hpll_en &&
-		!new_crtc_state->disable_cxsr;
-	intermediate->fbc_en = optimal->fbc_en && active->fbc_en;
-
-	for_each_plane_id_on_crtc(crtc, plane_id) {
-		intermediate->wm.plane[plane_id] =
-			max(optimal->wm.plane[plane_id],
-			    active->wm.plane[plane_id]);
-
-		drm_WARN_ON(&dev_priv->drm, intermediate->wm.plane[plane_id] >
-			    g4x_plane_fifo_size(plane_id, G4X_WM_LEVEL_NORMAL));
-	}
-
-	intermediate->sr.plane = max(optimal->sr.plane,
-				     active->sr.plane);
-	intermediate->sr.cursor = max(optimal->sr.cursor,
-				      active->sr.cursor);
-	intermediate->sr.fbc = max(optimal->sr.fbc,
-				   active->sr.fbc);
-
-	intermediate->hpll.plane = max(optimal->hpll.plane,
-				       active->hpll.plane);
-	intermediate->hpll.cursor = max(optimal->hpll.cursor,
-					active->hpll.cursor);
-	intermediate->hpll.fbc = max(optimal->hpll.fbc,
-				     active->hpll.fbc);
-
-	drm_WARN_ON(&dev_priv->drm,
-		    (intermediate->sr.plane >
-		     g4x_plane_fifo_size(PLANE_PRIMARY, G4X_WM_LEVEL_SR) ||
-		     intermediate->sr.cursor >
-		     g4x_plane_fifo_size(PLANE_CURSOR, G4X_WM_LEVEL_SR)) &&
-		    intermediate->cxsr);
-	drm_WARN_ON(&dev_priv->drm,
-		    (intermediate->sr.plane >
-		     g4x_plane_fifo_size(PLANE_PRIMARY, G4X_WM_LEVEL_HPLL) ||
-		     intermediate->sr.cursor >
-		     g4x_plane_fifo_size(PLANE_CURSOR, G4X_WM_LEVEL_HPLL)) &&
-		    intermediate->hpll_en);
-
-	drm_WARN_ON(&dev_priv->drm,
-		    intermediate->sr.fbc > g4x_fbc_fifo_size(1) &&
-		    intermediate->fbc_en && intermediate->cxsr);
-	drm_WARN_ON(&dev_priv->drm,
-		    intermediate->hpll.fbc > g4x_fbc_fifo_size(2) &&
-		    intermediate->fbc_en && intermediate->hpll_en);
-
-out:
-	/*
-	 * If our intermediate WM are identical to the final WM, then we can
-	 * omit the post-vblank programming; only update if it's different.
-	 */
-	if (memcmp(intermediate, optimal, sizeof(*intermediate)) != 0)
-		new_crtc_state->wm.need_postvbl_update = true;
-
-	return 0;
-}
-
-static void g4x_merge_wm(struct drm_i915_private *dev_priv,
-			 struct g4x_wm_values *wm)
-{
-	struct intel_crtc *crtc;
-	int num_active_pipes = 0;
-
-	wm->cxsr = true;
-	wm->hpll_en = true;
-	wm->fbc_en = true;
-
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		const struct g4x_wm_state *wm_state = &crtc->wm.active.g4x;
-
-		if (!crtc->active)
-			continue;
-
-		if (!wm_state->cxsr)
-			wm->cxsr = false;
-		if (!wm_state->hpll_en)
-			wm->hpll_en = false;
-		if (!wm_state->fbc_en)
-			wm->fbc_en = false;
-
-		num_active_pipes++;
-	}
-
-	if (num_active_pipes != 1) {
-		wm->cxsr = false;
-		wm->hpll_en = false;
-		wm->fbc_en = false;
-	}
-
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		const struct g4x_wm_state *wm_state = &crtc->wm.active.g4x;
-		enum pipe pipe = crtc->pipe;
-
-		wm->pipe[pipe] = wm_state->wm;
-		if (crtc->active && wm->cxsr)
-			wm->sr = wm_state->sr;
-		if (crtc->active && wm->hpll_en)
-			wm->hpll = wm_state->hpll;
-	}
-}
-
-static void g4x_program_watermarks(struct drm_i915_private *dev_priv)
-{
-	struct g4x_wm_values *old_wm = &dev_priv->display.wm.g4x;
-	struct g4x_wm_values new_wm = {};
-
-	g4x_merge_wm(dev_priv, &new_wm);
-
-	if (memcmp(old_wm, &new_wm, sizeof(new_wm)) == 0)
-		return;
-
-	if (is_disabling(old_wm->cxsr, new_wm.cxsr, true))
-		_intel_set_memory_cxsr(dev_priv, false);
-
-	g4x_write_wm_values(dev_priv, &new_wm);
-
-	if (is_enabling(old_wm->cxsr, new_wm.cxsr, true))
-		_intel_set_memory_cxsr(dev_priv, true);
-
-	*old_wm = new_wm;
-}
-
-static void g4x_initial_watermarks(struct intel_atomic_state *state,
-				   struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	const struct intel_crtc_state *crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-
-	mutex_lock(&dev_priv->display.wm.wm_mutex);
-	crtc->wm.active.g4x = crtc_state->wm.g4x.intermediate;
-	g4x_program_watermarks(dev_priv);
-	mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-static void g4x_optimize_watermarks(struct intel_atomic_state *state,
-				    struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	const struct intel_crtc_state *crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-
-	if (!crtc_state->wm.need_postvbl_update)
-		return;
-
-	mutex_lock(&dev_priv->display.wm.wm_mutex);
-	crtc->wm.active.g4x = crtc_state->wm.g4x.optimal;
-	g4x_program_watermarks(dev_priv);
-	mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-/* latency must be in 0.1us units. */
-static unsigned int vlv_wm_method2(unsigned int pixel_rate,
-				   unsigned int htotal,
-				   unsigned int width,
-				   unsigned int cpp,
-				   unsigned int latency)
-{
-	unsigned int ret;
-
-	ret = intel_wm_method2(pixel_rate, htotal,
-			       width, cpp, latency);
-	ret = DIV_ROUND_UP(ret, 64);
-
-	return ret;
-}
-
-static void vlv_setup_wm_latency(struct drm_i915_private *dev_priv)
-{
-	/* all latencies in usec */
-	dev_priv->display.wm.pri_latency[VLV_WM_LEVEL_PM2] = 3;
-
-	dev_priv->display.wm.max_level = VLV_WM_LEVEL_PM2;
-
-	if (IS_CHERRYVIEW(dev_priv)) {
-		dev_priv->display.wm.pri_latency[VLV_WM_LEVEL_PM5] = 12;
-		dev_priv->display.wm.pri_latency[VLV_WM_LEVEL_DDR_DVFS] = 33;
-
-		dev_priv->display.wm.max_level = VLV_WM_LEVEL_DDR_DVFS;
-	}
-}
-
-static u16 vlv_compute_wm_level(const struct intel_crtc_state *crtc_state,
-				const struct intel_plane_state *plane_state,
-				int level)
-{
-	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
-	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
-	const struct drm_display_mode *pipe_mode =
-		&crtc_state->hw.pipe_mode;
-	unsigned int pixel_rate, htotal, cpp, width, wm;
-
-	if (dev_priv->display.wm.pri_latency[level] == 0)
-		return USHRT_MAX;
-
-	if (!intel_wm_plane_visible(crtc_state, plane_state))
-		return 0;
-
-	cpp = plane_state->hw.fb->format->cpp[0];
-	pixel_rate = crtc_state->pixel_rate;
-	htotal = pipe_mode->crtc_htotal;
-	width = drm_rect_width(&plane_state->uapi.src) >> 16;
-
-	if (plane->id == PLANE_CURSOR) {
-		/*
-		 * FIXME the formula gives values that are
-		 * too big for the cursor FIFO, and hence we
-		 * would never be able to use cursors. For
-		 * now just hardcode the watermark.
-		 */
-		wm = 63;
-	} else {
-		wm = vlv_wm_method2(pixel_rate, htotal, width, cpp,
-				    dev_priv->display.wm.pri_latency[level] * 10);
-	}
-
-	return min_t(unsigned int, wm, USHRT_MAX);
-}
-
-static bool vlv_need_sprite0_fifo_workaround(unsigned int active_planes)
-{
-	return (active_planes & (BIT(PLANE_SPRITE0) |
-				 BIT(PLANE_SPRITE1))) == BIT(PLANE_SPRITE1);
-}
-
-static int vlv_compute_fifo(struct intel_crtc_state *crtc_state)
-{
-	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	const struct g4x_pipe_wm *raw =
-		&crtc_state->wm.vlv.raw[VLV_WM_LEVEL_PM2];
-	struct vlv_fifo_state *fifo_state = &crtc_state->wm.vlv.fifo_state;
-	u8 active_planes = crtc_state->active_planes & ~BIT(PLANE_CURSOR);
-	int num_active_planes = hweight8(active_planes);
-	const int fifo_size = 511;
-	int fifo_extra, fifo_left = fifo_size;
-	int sprite0_fifo_extra = 0;
-	unsigned int total_rate;
-	enum plane_id plane_id;
-
-	/*
-	 * When enabling sprite0 after sprite1 has already been enabled
-	 * we tend to get an underrun unless sprite0 already has some
-	 * FIFO space allcoated. Hence we always allocate at least one
-	 * cacheline for sprite0 whenever sprite1 is enabled.
-	 *
-	 * All other plane enable sequences appear immune to this problem.
-	 */
-	if (vlv_need_sprite0_fifo_workaround(active_planes))
-		sprite0_fifo_extra = 1;
-
-	total_rate = raw->plane[PLANE_PRIMARY] +
-		raw->plane[PLANE_SPRITE0] +
-		raw->plane[PLANE_SPRITE1] +
-		sprite0_fifo_extra;
-
-	if (total_rate > fifo_size)
-		return -EINVAL;
-
-	if (total_rate == 0)
-		total_rate = 1;
-
-	for_each_plane_id_on_crtc(crtc, plane_id) {
-		unsigned int rate;
-
-		if ((active_planes & BIT(plane_id)) == 0) {
-			fifo_state->plane[plane_id] = 0;
-			continue;
-		}
-
-		rate = raw->plane[plane_id];
-		fifo_state->plane[plane_id] = fifo_size * rate / total_rate;
-		fifo_left -= fifo_state->plane[plane_id];
-	}
-
-	fifo_state->plane[PLANE_SPRITE0] += sprite0_fifo_extra;
-	fifo_left -= sprite0_fifo_extra;
-
-	fifo_state->plane[PLANE_CURSOR] = 63;
-
-	fifo_extra = DIV_ROUND_UP(fifo_left, num_active_planes ?: 1);
-
-	/* spread the remainder evenly */
-	for_each_plane_id_on_crtc(crtc, plane_id) {
-		int plane_extra;
-
-		if (fifo_left == 0)
-			break;
-
-		if ((active_planes & BIT(plane_id)) == 0)
-			continue;
-
-		plane_extra = min(fifo_extra, fifo_left);
-		fifo_state->plane[plane_id] += plane_extra;
-		fifo_left -= plane_extra;
-	}
-
-	drm_WARN_ON(&dev_priv->drm, active_planes != 0 && fifo_left != 0);
-
-	/* give it all to the first plane if none are active */
-	if (active_planes == 0) {
-		drm_WARN_ON(&dev_priv->drm, fifo_left != fifo_size);
-		fifo_state->plane[PLANE_PRIMARY] = fifo_left;
-	}
-
-	return 0;
-}
-
-/* mark all levels starting from 'level' as invalid */
-static void vlv_invalidate_wms(struct intel_crtc *crtc,
-			       struct vlv_wm_state *wm_state, int level)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-
-	for (; level < intel_wm_num_levels(dev_priv); level++) {
-		enum plane_id plane_id;
-
-		for_each_plane_id_on_crtc(crtc, plane_id)
-			wm_state->wm[level].plane[plane_id] = USHRT_MAX;
-
-		wm_state->sr[level].cursor = USHRT_MAX;
-		wm_state->sr[level].plane = USHRT_MAX;
-	}
-}
-
-static u16 vlv_invert_wm_value(u16 wm, u16 fifo_size)
-{
-	if (wm > fifo_size)
-		return USHRT_MAX;
-	else
-		return fifo_size - wm;
-}
-
-/*
- * Starting from 'level' set all higher
- * levels to 'value' in the "raw" watermarks.
- */
-static bool vlv_raw_plane_wm_set(struct intel_crtc_state *crtc_state,
-				 int level, enum plane_id plane_id, u16 value)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
-	int num_levels = intel_wm_num_levels(dev_priv);
-	bool dirty = false;
-
-	for (; level < num_levels; level++) {
-		struct g4x_pipe_wm *raw = &crtc_state->wm.vlv.raw[level];
-
-		dirty |= raw->plane[plane_id] != value;
-		raw->plane[plane_id] = value;
-	}
-
-	return dirty;
-}
-
-static bool vlv_raw_plane_wm_compute(struct intel_crtc_state *crtc_state,
-				     const struct intel_plane_state *plane_state)
-{
-	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
-	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
-	enum plane_id plane_id = plane->id;
-	int num_levels = intel_wm_num_levels(to_i915(plane->base.dev));
-	int level;
-	bool dirty = false;
-
-	if (!intel_wm_plane_visible(crtc_state, plane_state)) {
-		dirty |= vlv_raw_plane_wm_set(crtc_state, 0, plane_id, 0);
-		goto out;
-	}
-
-	for (level = 0; level < num_levels; level++) {
-		struct g4x_pipe_wm *raw = &crtc_state->wm.vlv.raw[level];
-		int wm = vlv_compute_wm_level(crtc_state, plane_state, level);
-		int max_wm = plane_id == PLANE_CURSOR ? 63 : 511;
-
-		if (wm > max_wm)
-			break;
-
-		dirty |= raw->plane[plane_id] != wm;
-		raw->plane[plane_id] = wm;
-	}
-
-	/* mark all higher levels as invalid */
-	dirty |= vlv_raw_plane_wm_set(crtc_state, level, plane_id, USHRT_MAX);
-
-out:
-	if (dirty)
-		drm_dbg_kms(&dev_priv->drm,
-			    "%s watermarks: PM2=%d, PM5=%d, DDR DVFS=%d\n",
-			    plane->base.name,
-			    crtc_state->wm.vlv.raw[VLV_WM_LEVEL_PM2].plane[plane_id],
-			    crtc_state->wm.vlv.raw[VLV_WM_LEVEL_PM5].plane[plane_id],
-			    crtc_state->wm.vlv.raw[VLV_WM_LEVEL_DDR_DVFS].plane[plane_id]);
-
-	return dirty;
-}
-
-static bool vlv_raw_plane_wm_is_valid(const struct intel_crtc_state *crtc_state,
-				      enum plane_id plane_id, int level)
-{
-	const struct g4x_pipe_wm *raw =
-		&crtc_state->wm.vlv.raw[level];
-	const struct vlv_fifo_state *fifo_state =
-		&crtc_state->wm.vlv.fifo_state;
-
-	return raw->plane[plane_id] <= fifo_state->plane[plane_id];
-}
-
-static bool vlv_raw_crtc_wm_is_valid(const struct intel_crtc_state *crtc_state, int level)
-{
-	return vlv_raw_plane_wm_is_valid(crtc_state, PLANE_PRIMARY, level) &&
-		vlv_raw_plane_wm_is_valid(crtc_state, PLANE_SPRITE0, level) &&
-		vlv_raw_plane_wm_is_valid(crtc_state, PLANE_SPRITE1, level) &&
-		vlv_raw_plane_wm_is_valid(crtc_state, PLANE_CURSOR, level);
-}
-
-static int _vlv_compute_pipe_wm(struct intel_crtc_state *crtc_state)
-{
-	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	struct vlv_wm_state *wm_state = &crtc_state->wm.vlv.optimal;
-	const struct vlv_fifo_state *fifo_state =
-		&crtc_state->wm.vlv.fifo_state;
-	u8 active_planes = crtc_state->active_planes & ~BIT(PLANE_CURSOR);
-	int num_active_planes = hweight8(active_planes);
-	enum plane_id plane_id;
-	int level;
-
-	/* initially allow all levels */
-	wm_state->num_levels = intel_wm_num_levels(dev_priv);
-	/*
-	 * Note that enabling cxsr with no primary/sprite planes
-	 * enabled can wedge the pipe. Hence we only allow cxsr
-	 * with exactly one enabled primary/sprite plane.
-	 */
-	wm_state->cxsr = crtc->pipe != PIPE_C && num_active_planes == 1;
-
-	for (level = 0; level < wm_state->num_levels; level++) {
-		const struct g4x_pipe_wm *raw = &crtc_state->wm.vlv.raw[level];
-		const int sr_fifo_size = INTEL_NUM_PIPES(dev_priv) * 512 - 1;
-
-		if (!vlv_raw_crtc_wm_is_valid(crtc_state, level))
-			break;
-
-		for_each_plane_id_on_crtc(crtc, plane_id) {
-			wm_state->wm[level].plane[plane_id] =
-				vlv_invert_wm_value(raw->plane[plane_id],
-						    fifo_state->plane[plane_id]);
-		}
-
-		wm_state->sr[level].plane =
-			vlv_invert_wm_value(max3(raw->plane[PLANE_PRIMARY],
-						 raw->plane[PLANE_SPRITE0],
-						 raw->plane[PLANE_SPRITE1]),
-					    sr_fifo_size);
-
-		wm_state->sr[level].cursor =
-			vlv_invert_wm_value(raw->plane[PLANE_CURSOR],
-					    63);
-	}
-
-	if (level == 0)
-		return -EINVAL;
-
-	/* limit to only levels we can actually handle */
-	wm_state->num_levels = level;
-
-	/* invalidate the higher levels */
-	vlv_invalidate_wms(crtc, wm_state, level);
-
-	return 0;
-}
-
-static int vlv_compute_pipe_wm(struct intel_atomic_state *state,
-			       struct intel_crtc *crtc)
-{
-	struct intel_crtc_state *crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-	bool needs_modeset = drm_atomic_crtc_needs_modeset(&crtc_state->uapi);
-	const struct intel_plane_state *old_plane_state;
-	const struct intel_plane_state *new_plane_state;
-	struct intel_plane *plane;
-	unsigned int dirty = 0;
-	int i;
-
-	for_each_oldnew_intel_plane_in_state(state, plane,
-					     old_plane_state,
-					     new_plane_state, i) {
-		if (new_plane_state->hw.crtc != &crtc->base &&
-		    old_plane_state->hw.crtc != &crtc->base)
-			continue;
-
-		if (vlv_raw_plane_wm_compute(crtc_state, new_plane_state))
-			dirty |= BIT(plane->id);
-	}
-
-	/*
-	 * DSPARB registers may have been reset due to the
-	 * power well being turned off. Make sure we restore
-	 * them to a consistent state even if no primary/sprite
-	 * planes are initially active. We also force a FIFO
-	 * recomputation so that we are sure to sanitize the
-	 * FIFO setting we took over from the BIOS even if there
-	 * are no active planes on the crtc.
-	 */
-	if (needs_modeset)
-		dirty = ~0;
-
-	if (!dirty)
-		return 0;
-
-	/* cursor changes don't warrant a FIFO recompute */
-	if (dirty & ~BIT(PLANE_CURSOR)) {
-		const struct intel_crtc_state *old_crtc_state =
-			intel_atomic_get_old_crtc_state(state, crtc);
-		const struct vlv_fifo_state *old_fifo_state =
-			&old_crtc_state->wm.vlv.fifo_state;
-		const struct vlv_fifo_state *new_fifo_state =
-			&crtc_state->wm.vlv.fifo_state;
-		int ret;
-
-		ret = vlv_compute_fifo(crtc_state);
-		if (ret)
-			return ret;
-
-		if (needs_modeset ||
-		    memcmp(old_fifo_state, new_fifo_state,
-			   sizeof(*new_fifo_state)) != 0)
-			crtc_state->fifo_changed = true;
-	}
-
-	return _vlv_compute_pipe_wm(crtc_state);
-}
-
-#define VLV_FIFO(plane, value) \
-	(((value) << DSPARB_ ## plane ## _SHIFT_VLV) & DSPARB_ ## plane ## _MASK_VLV)
-
-static void vlv_atomic_update_fifo(struct intel_atomic_state *state,
-				   struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	struct intel_uncore *uncore = &dev_priv->uncore;
-	const struct intel_crtc_state *crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-	const struct vlv_fifo_state *fifo_state =
-		&crtc_state->wm.vlv.fifo_state;
-	int sprite0_start, sprite1_start, fifo_size;
-	u32 dsparb, dsparb2, dsparb3;
-
-	if (!crtc_state->fifo_changed)
-		return;
-
-	sprite0_start = fifo_state->plane[PLANE_PRIMARY];
-	sprite1_start = fifo_state->plane[PLANE_SPRITE0] + sprite0_start;
-	fifo_size = fifo_state->plane[PLANE_SPRITE1] + sprite1_start;
-
-	drm_WARN_ON(&dev_priv->drm, fifo_state->plane[PLANE_CURSOR] != 63);
-	drm_WARN_ON(&dev_priv->drm, fifo_size != 511);
-
-	trace_vlv_fifo_size(crtc, sprite0_start, sprite1_start, fifo_size);
-
-	/*
-	 * uncore.lock serves a double purpose here. It allows us to
-	 * use the less expensive I915_{READ,WRITE}_FW() functions, and
-	 * it protects the DSPARB registers from getting clobbered by
-	 * parallel updates from multiple pipes.
-	 *
-	 * intel_pipe_update_start() has already disabled interrupts
-	 * for us, so a plain spin_lock() is sufficient here.
-	 */
-	spin_lock(&uncore->lock);
-
-	switch (crtc->pipe) {
-	case PIPE_A:
-		dsparb = intel_uncore_read_fw(uncore, DSPARB);
-		dsparb2 = intel_uncore_read_fw(uncore, DSPARB2);
-
-		dsparb &= ~(VLV_FIFO(SPRITEA, 0xff) |
-			    VLV_FIFO(SPRITEB, 0xff));
-		dsparb |= (VLV_FIFO(SPRITEA, sprite0_start) |
-			   VLV_FIFO(SPRITEB, sprite1_start));
-
-		dsparb2 &= ~(VLV_FIFO(SPRITEA_HI, 0x1) |
-			     VLV_FIFO(SPRITEB_HI, 0x1));
-		dsparb2 |= (VLV_FIFO(SPRITEA_HI, sprite0_start >> 8) |
-			   VLV_FIFO(SPRITEB_HI, sprite1_start >> 8));
-
-		intel_uncore_write_fw(uncore, DSPARB, dsparb);
-		intel_uncore_write_fw(uncore, DSPARB2, dsparb2);
-		break;
-	case PIPE_B:
-		dsparb = intel_uncore_read_fw(uncore, DSPARB);
-		dsparb2 = intel_uncore_read_fw(uncore, DSPARB2);
-
-		dsparb &= ~(VLV_FIFO(SPRITEC, 0xff) |
-			    VLV_FIFO(SPRITED, 0xff));
-		dsparb |= (VLV_FIFO(SPRITEC, sprite0_start) |
-			   VLV_FIFO(SPRITED, sprite1_start));
-
-		dsparb2 &= ~(VLV_FIFO(SPRITEC_HI, 0xff) |
-			     VLV_FIFO(SPRITED_HI, 0xff));
-		dsparb2 |= (VLV_FIFO(SPRITEC_HI, sprite0_start >> 8) |
-			   VLV_FIFO(SPRITED_HI, sprite1_start >> 8));
-
-		intel_uncore_write_fw(uncore, DSPARB, dsparb);
-		intel_uncore_write_fw(uncore, DSPARB2, dsparb2);
-		break;
-	case PIPE_C:
-		dsparb3 = intel_uncore_read_fw(uncore, DSPARB3);
-		dsparb2 = intel_uncore_read_fw(uncore, DSPARB2);
-
-		dsparb3 &= ~(VLV_FIFO(SPRITEE, 0xff) |
-			     VLV_FIFO(SPRITEF, 0xff));
-		dsparb3 |= (VLV_FIFO(SPRITEE, sprite0_start) |
-			    VLV_FIFO(SPRITEF, sprite1_start));
-
-		dsparb2 &= ~(VLV_FIFO(SPRITEE_HI, 0xff) |
-			     VLV_FIFO(SPRITEF_HI, 0xff));
-		dsparb2 |= (VLV_FIFO(SPRITEE_HI, sprite0_start >> 8) |
-			   VLV_FIFO(SPRITEF_HI, sprite1_start >> 8));
-
-		intel_uncore_write_fw(uncore, DSPARB3, dsparb3);
-		intel_uncore_write_fw(uncore, DSPARB2, dsparb2);
-		break;
-	default:
-		break;
-	}
-
-	intel_uncore_posting_read_fw(uncore, DSPARB);
-
-	spin_unlock(&uncore->lock);
-}
-
-#undef VLV_FIFO
-
-static int vlv_compute_intermediate_wm(struct intel_atomic_state *state,
-				       struct intel_crtc *crtc)
-{
-	struct intel_crtc_state *new_crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-	const struct intel_crtc_state *old_crtc_state =
-		intel_atomic_get_old_crtc_state(state, crtc);
-	struct vlv_wm_state *intermediate = &new_crtc_state->wm.vlv.intermediate;
-	const struct vlv_wm_state *optimal = &new_crtc_state->wm.vlv.optimal;
-	const struct vlv_wm_state *active = &old_crtc_state->wm.vlv.optimal;
-	int level;
-
-	if (!new_crtc_state->hw.active ||
-	    drm_atomic_crtc_needs_modeset(&new_crtc_state->uapi)) {
-		*intermediate = *optimal;
-
-		intermediate->cxsr = false;
-		goto out;
-	}
-
-	intermediate->num_levels = min(optimal->num_levels, active->num_levels);
-	intermediate->cxsr = optimal->cxsr && active->cxsr &&
-		!new_crtc_state->disable_cxsr;
-
-	for (level = 0; level < intermediate->num_levels; level++) {
-		enum plane_id plane_id;
-
-		for_each_plane_id_on_crtc(crtc, plane_id) {
-			intermediate->wm[level].plane[plane_id] =
-				min(optimal->wm[level].plane[plane_id],
-				    active->wm[level].plane[plane_id]);
-		}
-
-		intermediate->sr[level].plane = min(optimal->sr[level].plane,
-						    active->sr[level].plane);
-		intermediate->sr[level].cursor = min(optimal->sr[level].cursor,
-						     active->sr[level].cursor);
-	}
-
-	vlv_invalidate_wms(crtc, intermediate, level);
-
-out:
-	/*
-	 * If our intermediate WM are identical to the final WM, then we can
-	 * omit the post-vblank programming; only update if it's different.
-	 */
-	if (memcmp(intermediate, optimal, sizeof(*intermediate)) != 0)
-		new_crtc_state->wm.need_postvbl_update = true;
-
-	return 0;
-}
-
-static void vlv_merge_wm(struct drm_i915_private *dev_priv,
-			 struct vlv_wm_values *wm)
-{
-	struct intel_crtc *crtc;
-	int num_active_pipes = 0;
-
-	wm->level = dev_priv->display.wm.max_level;
-	wm->cxsr = true;
-
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		const struct vlv_wm_state *wm_state = &crtc->wm.active.vlv;
-
-		if (!crtc->active)
-			continue;
-
-		if (!wm_state->cxsr)
-			wm->cxsr = false;
-
-		num_active_pipes++;
-		wm->level = min_t(int, wm->level, wm_state->num_levels - 1);
-	}
-
-	if (num_active_pipes != 1)
-		wm->cxsr = false;
-
-	if (num_active_pipes > 1)
-		wm->level = VLV_WM_LEVEL_PM2;
-
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		const struct vlv_wm_state *wm_state = &crtc->wm.active.vlv;
-		enum pipe pipe = crtc->pipe;
-
-		wm->pipe[pipe] = wm_state->wm[wm->level];
-		if (crtc->active && wm->cxsr)
-			wm->sr = wm_state->sr[wm->level];
-
-		wm->ddl[pipe].plane[PLANE_PRIMARY] = DDL_PRECISION_HIGH | 2;
-		wm->ddl[pipe].plane[PLANE_SPRITE0] = DDL_PRECISION_HIGH | 2;
-		wm->ddl[pipe].plane[PLANE_SPRITE1] = DDL_PRECISION_HIGH | 2;
-		wm->ddl[pipe].plane[PLANE_CURSOR] = DDL_PRECISION_HIGH | 2;
-	}
-}
-
-static void vlv_program_watermarks(struct drm_i915_private *dev_priv)
-{
-	struct vlv_wm_values *old_wm = &dev_priv->display.wm.vlv;
-	struct vlv_wm_values new_wm = {};
-
-	vlv_merge_wm(dev_priv, &new_wm);
-
-	if (memcmp(old_wm, &new_wm, sizeof(new_wm)) == 0)
-		return;
-
-	if (is_disabling(old_wm->level, new_wm.level, VLV_WM_LEVEL_DDR_DVFS))
-		chv_set_memory_dvfs(dev_priv, false);
-
-	if (is_disabling(old_wm->level, new_wm.level, VLV_WM_LEVEL_PM5))
-		chv_set_memory_pm5(dev_priv, false);
-
-	if (is_disabling(old_wm->cxsr, new_wm.cxsr, true))
-		_intel_set_memory_cxsr(dev_priv, false);
-
-	vlv_write_wm_values(dev_priv, &new_wm);
-
-	if (is_enabling(old_wm->cxsr, new_wm.cxsr, true))
-		_intel_set_memory_cxsr(dev_priv, true);
-
-	if (is_enabling(old_wm->level, new_wm.level, VLV_WM_LEVEL_PM5))
-		chv_set_memory_pm5(dev_priv, true);
-
-	if (is_enabling(old_wm->level, new_wm.level, VLV_WM_LEVEL_DDR_DVFS))
-		chv_set_memory_dvfs(dev_priv, true);
-
-	*old_wm = new_wm;
-}
-
-static void vlv_initial_watermarks(struct intel_atomic_state *state,
-				   struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	const struct intel_crtc_state *crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-
-	mutex_lock(&dev_priv->display.wm.wm_mutex);
-	crtc->wm.active.vlv = crtc_state->wm.vlv.intermediate;
-	vlv_program_watermarks(dev_priv);
-	mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-static void vlv_optimize_watermarks(struct intel_atomic_state *state,
-				    struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	const struct intel_crtc_state *crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-
-	if (!crtc_state->wm.need_postvbl_update)
-		return;
-
-	mutex_lock(&dev_priv->display.wm.wm_mutex);
-	crtc->wm.active.vlv = crtc_state->wm.vlv.optimal;
-	vlv_program_watermarks(dev_priv);
-	mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-static void i965_update_wm(struct drm_i915_private *dev_priv)
-{
-	struct intel_crtc *crtc;
-	int srwm = 1;
-	int cursor_sr = 16;
-	bool cxsr_enabled;
-
-	/* Calc sr entries for one plane configs */
-	crtc = single_enabled_crtc(dev_priv);
-	if (crtc) {
-		/* self-refresh has much higher latency */
-		static const int sr_latency_ns = 12000;
-		const struct drm_display_mode *pipe_mode =
-			&crtc->config->hw.pipe_mode;
-		const struct drm_framebuffer *fb =
-			crtc->base.primary->state->fb;
-		int pixel_rate = crtc->config->pixel_rate;
-		int htotal = pipe_mode->crtc_htotal;
-		int width = drm_rect_width(&crtc->base.primary->state->src) >> 16;
-		int cpp = fb->format->cpp[0];
-		int entries;
-
-		entries = intel_wm_method2(pixel_rate, htotal,
-					   width, cpp, sr_latency_ns / 100);
-		entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE);
-		srwm = I965_FIFO_SIZE - entries;
-		if (srwm < 0)
-			srwm = 1;
-		srwm &= 0x1ff;
-		drm_dbg_kms(&dev_priv->drm,
-			    "self-refresh entries: %d, wm: %d\n",
-			    entries, srwm);
-
-		entries = intel_wm_method2(pixel_rate, htotal,
-					   crtc->base.cursor->state->crtc_w, 4,
-					   sr_latency_ns / 100);
-		entries = DIV_ROUND_UP(entries,
-				       i965_cursor_wm_info.cacheline_size) +
-			i965_cursor_wm_info.guard_size;
-
-		cursor_sr = i965_cursor_wm_info.fifo_size - entries;
-		if (cursor_sr > i965_cursor_wm_info.max_wm)
-			cursor_sr = i965_cursor_wm_info.max_wm;
-
-		drm_dbg_kms(&dev_priv->drm,
-			    "self-refresh watermark: display plane %d "
-			    "cursor %d\n", srwm, cursor_sr);
-
-		cxsr_enabled = true;
-	} else {
-		cxsr_enabled = false;
-		/* Turn off self refresh if both pipes are enabled */
-		intel_set_memory_cxsr(dev_priv, false);
-	}
-
-	drm_dbg_kms(&dev_priv->drm,
-		    "Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n",
-		    srwm);
-
-	/* 965 has limitations... */
-	intel_uncore_write(&dev_priv->uncore, DSPFW1, FW_WM(srwm, SR) |
-		   FW_WM(8, CURSORB) |
-		   FW_WM(8, PLANEB) |
-		   FW_WM(8, PLANEA));
-	intel_uncore_write(&dev_priv->uncore, DSPFW2, FW_WM(8, CURSORA) |
-		   FW_WM(8, PLANEC_OLD));
-	/* update cursor SR watermark */
-	intel_uncore_write(&dev_priv->uncore, DSPFW3, FW_WM(cursor_sr, CURSOR_SR));
-
-	if (cxsr_enabled)
-		intel_set_memory_cxsr(dev_priv, true);
-}
-
-#undef FW_WM
-
-static struct intel_crtc *intel_crtc_for_plane(struct drm_i915_private *i915,
-					       enum i9xx_plane_id i9xx_plane)
-{
-	struct intel_plane *plane;
-
-	for_each_intel_plane(&i915->drm, plane) {
-		if (plane->id == PLANE_PRIMARY &&
-		    plane->i9xx_plane == i9xx_plane)
-			return intel_crtc_for_pipe(i915, plane->pipe);
-	}
-
-	return NULL;
-}
-
-static void i9xx_update_wm(struct drm_i915_private *dev_priv)
-{
-	const struct intel_watermark_params *wm_info;
-	u32 fwater_lo;
-	u32 fwater_hi;
-	int cwm, srwm = 1;
-	int fifo_size;
-	int planea_wm, planeb_wm;
-	struct intel_crtc *crtc;
-
-	if (IS_I945GM(dev_priv))
-		wm_info = &i945_wm_info;
-	else if (DISPLAY_VER(dev_priv) != 2)
-		wm_info = &i915_wm_info;
-	else
-		wm_info = &i830_a_wm_info;
-
-	if (DISPLAY_VER(dev_priv) == 2)
-		fifo_size = i830_get_fifo_size(dev_priv, PLANE_A);
-	else
-		fifo_size = i9xx_get_fifo_size(dev_priv, PLANE_A);
-	crtc = intel_crtc_for_plane(dev_priv, PLANE_A);
-	if (intel_crtc_active(crtc)) {
-		const struct drm_framebuffer *fb =
-			crtc->base.primary->state->fb;
-		int cpp;
-
-		if (DISPLAY_VER(dev_priv) == 2)
-			cpp = 4;
-		else
-			cpp = fb->format->cpp[0];
-
-		planea_wm = intel_calculate_wm(crtc->config->pixel_rate,
-					       wm_info, fifo_size, cpp,
-					       pessimal_latency_ns);
-	} else {
-		planea_wm = fifo_size - wm_info->guard_size;
-		if (planea_wm > (long)wm_info->max_wm)
-			planea_wm = wm_info->max_wm;
-	}
-
-	if (DISPLAY_VER(dev_priv) == 2)
-		wm_info = &i830_bc_wm_info;
-
-	if (DISPLAY_VER(dev_priv) == 2)
-		fifo_size = i830_get_fifo_size(dev_priv, PLANE_B);
-	else
-		fifo_size = i9xx_get_fifo_size(dev_priv, PLANE_B);
-	crtc = intel_crtc_for_plane(dev_priv, PLANE_B);
-	if (intel_crtc_active(crtc)) {
-		const struct drm_framebuffer *fb =
-			crtc->base.primary->state->fb;
-		int cpp;
-
-		if (DISPLAY_VER(dev_priv) == 2)
-			cpp = 4;
-		else
-			cpp = fb->format->cpp[0];
-
-		planeb_wm = intel_calculate_wm(crtc->config->pixel_rate,
-					       wm_info, fifo_size, cpp,
-					       pessimal_latency_ns);
-	} else {
-		planeb_wm = fifo_size - wm_info->guard_size;
-		if (planeb_wm > (long)wm_info->max_wm)
-			planeb_wm = wm_info->max_wm;
-	}
-
-	drm_dbg_kms(&dev_priv->drm,
-		    "FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
-
-	crtc = single_enabled_crtc(dev_priv);
-	if (IS_I915GM(dev_priv) && crtc) {
-		struct drm_i915_gem_object *obj;
-
-		obj = intel_fb_obj(crtc->base.primary->state->fb);
-
-		/* self-refresh seems busted with untiled */
-		if (!i915_gem_object_is_tiled(obj))
-			crtc = NULL;
-	}
-
-	/*
-	 * Overlay gets an aggressive default since video jitter is bad.
-	 */
-	cwm = 2;
-
-	/* Play safe and disable self-refresh before adjusting watermarks. */
-	intel_set_memory_cxsr(dev_priv, false);
-
-	/* Calc sr entries for one plane configs */
-	if (HAS_FW_BLC(dev_priv) && crtc) {
-		/* self-refresh has much higher latency */
-		static const int sr_latency_ns = 6000;
-		const struct drm_display_mode *pipe_mode =
-			&crtc->config->hw.pipe_mode;
-		const struct drm_framebuffer *fb =
-			crtc->base.primary->state->fb;
-		int pixel_rate = crtc->config->pixel_rate;
-		int htotal = pipe_mode->crtc_htotal;
-		int width = drm_rect_width(&crtc->base.primary->state->src) >> 16;
-		int cpp;
-		int entries;
-
-		if (IS_I915GM(dev_priv) || IS_I945GM(dev_priv))
-			cpp = 4;
-		else
-			cpp = fb->format->cpp[0];
-
-		entries = intel_wm_method2(pixel_rate, htotal, width, cpp,
-					   sr_latency_ns / 100);
-		entries = DIV_ROUND_UP(entries, wm_info->cacheline_size);
-		drm_dbg_kms(&dev_priv->drm,
-			    "self-refresh entries: %d\n", entries);
-		srwm = wm_info->fifo_size - entries;
-		if (srwm < 0)
-			srwm = 1;
-
-		if (IS_I945G(dev_priv) || IS_I945GM(dev_priv))
-			intel_uncore_write(&dev_priv->uncore, FW_BLC_SELF,
-				   FW_BLC_SELF_FIFO_MASK | (srwm & 0xff));
-		else
-			intel_uncore_write(&dev_priv->uncore, FW_BLC_SELF, srwm & 0x3f);
-	}
-
-	drm_dbg_kms(&dev_priv->drm,
-		    "Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n",
-		     planea_wm, planeb_wm, cwm, srwm);
-
-	fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f);
-	fwater_hi = (cwm & 0x1f);
-
-	/* Set request length to 8 cachelines per fetch */
-	fwater_lo = fwater_lo | (1 << 24) | (1 << 8);
-	fwater_hi = fwater_hi | (1 << 8);
-
-	intel_uncore_write(&dev_priv->uncore, FW_BLC, fwater_lo);
-	intel_uncore_write(&dev_priv->uncore, FW_BLC2, fwater_hi);
-
-	if (crtc)
-		intel_set_memory_cxsr(dev_priv, true);
-}
-
-static void i845_update_wm(struct drm_i915_private *dev_priv)
-{
-	struct intel_crtc *crtc;
-	u32 fwater_lo;
-	int planea_wm;
-
-	crtc = single_enabled_crtc(dev_priv);
-	if (crtc == NULL)
-		return;
-
-	planea_wm = intel_calculate_wm(crtc->config->pixel_rate,
-				       &i845_wm_info,
-				       i845_get_fifo_size(dev_priv, PLANE_A),
-				       4, pessimal_latency_ns);
-	fwater_lo = intel_uncore_read(&dev_priv->uncore, FW_BLC) & ~0xfff;
-	fwater_lo |= (3<<8) | planea_wm;
-
-	drm_dbg_kms(&dev_priv->drm,
-		    "Setting FIFO watermarks - A: %d\n", planea_wm);
-
-	intel_uncore_write(&dev_priv->uncore, FW_BLC, fwater_lo);
-}
-
-/* latency must be in 0.1us units. */
-static unsigned int ilk_wm_method1(unsigned int pixel_rate,
-				   unsigned int cpp,
-				   unsigned int latency)
-{
-	unsigned int ret;
-
-	ret = intel_wm_method1(pixel_rate, cpp, latency);
-	ret = DIV_ROUND_UP(ret, 64) + 2;
-
-	return ret;
-}
-
-/* latency must be in 0.1us units. */
-static unsigned int ilk_wm_method2(unsigned int pixel_rate,
-				   unsigned int htotal,
-				   unsigned int width,
-				   unsigned int cpp,
-				   unsigned int latency)
-{
-	unsigned int ret;
-
-	ret = intel_wm_method2(pixel_rate, htotal,
-			       width, cpp, latency);
-	ret = DIV_ROUND_UP(ret, 64) + 2;
-
-	return ret;
-}
-
-static u32 ilk_wm_fbc(u32 pri_val, u32 horiz_pixels, u8 cpp)
-{
-	/*
-	 * Neither of these should be possible since this function shouldn't be
-	 * called if the CRTC is off or the plane is invisible.  But let's be
-	 * extra paranoid to avoid a potential divide-by-zero if we screw up
-	 * elsewhere in the driver.
-	 */
-	if (WARN_ON(!cpp))
-		return 0;
-	if (WARN_ON(!horiz_pixels))
-		return 0;
-
-	return DIV_ROUND_UP(pri_val * 64, horiz_pixels * cpp) + 2;
-}
-
-struct ilk_wm_maximums {
-	u16 pri;
-	u16 spr;
-	u16 cur;
-	u16 fbc;
-};
-
-/*
- * For both WM_PIPE and WM_LP.
- * mem_value must be in 0.1us units.
- */
-static u32 ilk_compute_pri_wm(const struct intel_crtc_state *crtc_state,
-			      const struct intel_plane_state *plane_state,
-			      u32 mem_value, bool is_lp)
-{
-	u32 method1, method2;
-	int cpp;
-
-	if (mem_value == 0)
-		return U32_MAX;
-
-	if (!intel_wm_plane_visible(crtc_state, plane_state))
-		return 0;
-
-	cpp = plane_state->hw.fb->format->cpp[0];
-
-	method1 = ilk_wm_method1(crtc_state->pixel_rate, cpp, mem_value);
-
-	if (!is_lp)
-		return method1;
-
-	method2 = ilk_wm_method2(crtc_state->pixel_rate,
-				 crtc_state->hw.pipe_mode.crtc_htotal,
-				 drm_rect_width(&plane_state->uapi.src) >> 16,
-				 cpp, mem_value);
-
-	return min(method1, method2);
-}
-
-/*
- * For both WM_PIPE and WM_LP.
- * mem_value must be in 0.1us units.
- */
-static u32 ilk_compute_spr_wm(const struct intel_crtc_state *crtc_state,
-			      const struct intel_plane_state *plane_state,
-			      u32 mem_value)
-{
-	u32 method1, method2;
-	int cpp;
-
-	if (mem_value == 0)
-		return U32_MAX;
-
-	if (!intel_wm_plane_visible(crtc_state, plane_state))
-		return 0;
-
-	cpp = plane_state->hw.fb->format->cpp[0];
-
-	method1 = ilk_wm_method1(crtc_state->pixel_rate, cpp, mem_value);
-	method2 = ilk_wm_method2(crtc_state->pixel_rate,
-				 crtc_state->hw.pipe_mode.crtc_htotal,
-				 drm_rect_width(&plane_state->uapi.src) >> 16,
-				 cpp, mem_value);
-	return min(method1, method2);
-}
-
-/*
- * For both WM_PIPE and WM_LP.
- * mem_value must be in 0.1us units.
- */
-static u32 ilk_compute_cur_wm(const struct intel_crtc_state *crtc_state,
-			      const struct intel_plane_state *plane_state,
-			      u32 mem_value)
-{
-	int cpp;
-
-	if (mem_value == 0)
-		return U32_MAX;
-
-	if (!intel_wm_plane_visible(crtc_state, plane_state))
-		return 0;
-
-	cpp = plane_state->hw.fb->format->cpp[0];
-
-	return ilk_wm_method2(crtc_state->pixel_rate,
-			      crtc_state->hw.pipe_mode.crtc_htotal,
-			      drm_rect_width(&plane_state->uapi.src) >> 16,
-			      cpp, mem_value);
-}
-
-/* Only for WM_LP. */
-static u32 ilk_compute_fbc_wm(const struct intel_crtc_state *crtc_state,
-			      const struct intel_plane_state *plane_state,
-			      u32 pri_val)
-{
-	int cpp;
-
-	if (!intel_wm_plane_visible(crtc_state, plane_state))
-		return 0;
-
-	cpp = plane_state->hw.fb->format->cpp[0];
-
-	return ilk_wm_fbc(pri_val, drm_rect_width(&plane_state->uapi.src) >> 16,
-			  cpp);
-}
-
-static unsigned int
-ilk_display_fifo_size(const struct drm_i915_private *dev_priv)
-{
-	if (DISPLAY_VER(dev_priv) >= 8)
-		return 3072;
-	else if (DISPLAY_VER(dev_priv) >= 7)
-		return 768;
-	else
-		return 512;
-}
-
-static unsigned int
-ilk_plane_wm_reg_max(const struct drm_i915_private *dev_priv,
-		     int level, bool is_sprite)
-{
-	if (DISPLAY_VER(dev_priv) >= 8)
-		/* BDW primary/sprite plane watermarks */
-		return level == 0 ? 255 : 2047;
-	else if (DISPLAY_VER(dev_priv) >= 7)
-		/* IVB/HSW primary/sprite plane watermarks */
-		return level == 0 ? 127 : 1023;
-	else if (!is_sprite)
-		/* ILK/SNB primary plane watermarks */
-		return level == 0 ? 127 : 511;
-	else
-		/* ILK/SNB sprite plane watermarks */
-		return level == 0 ? 63 : 255;
-}
-
-static unsigned int
-ilk_cursor_wm_reg_max(const struct drm_i915_private *dev_priv, int level)
-{
-	if (DISPLAY_VER(dev_priv) >= 7)
-		return level == 0 ? 63 : 255;
-	else
-		return level == 0 ? 31 : 63;
-}
-
-static unsigned int ilk_fbc_wm_reg_max(const struct drm_i915_private *dev_priv)
-{
-	if (DISPLAY_VER(dev_priv) >= 8)
-		return 31;
-	else
-		return 15;
-}
-
-/* Calculate the maximum primary/sprite plane watermark */
-static unsigned int ilk_plane_wm_max(const struct drm_i915_private *dev_priv,
-				     int level,
-				     const struct intel_wm_config *config,
-				     enum intel_ddb_partitioning ddb_partitioning,
-				     bool is_sprite)
-{
-	unsigned int fifo_size = ilk_display_fifo_size(dev_priv);
-
-	/* if sprites aren't enabled, sprites get nothing */
-	if (is_sprite && !config->sprites_enabled)
-		return 0;
-
-	/* HSW allows LP1+ watermarks even with multiple pipes */
-	if (level == 0 || config->num_pipes_active > 1) {
-		fifo_size /= INTEL_NUM_PIPES(dev_priv);
-
-		/*
-		 * For some reason the non self refresh
-		 * FIFO size is only half of the self
-		 * refresh FIFO size on ILK/SNB.
-		 */
-		if (DISPLAY_VER(dev_priv) <= 6)
-			fifo_size /= 2;
-	}
-
-	if (config->sprites_enabled) {
-		/* level 0 is always calculated with 1:1 split */
-		if (level > 0 && ddb_partitioning == INTEL_DDB_PART_5_6) {
-			if (is_sprite)
-				fifo_size *= 5;
-			fifo_size /= 6;
-		} else {
-			fifo_size /= 2;
-		}
-	}
-
-	/* clamp to max that the registers can hold */
-	return min(fifo_size, ilk_plane_wm_reg_max(dev_priv, level, is_sprite));
-}
-
-/* Calculate the maximum cursor plane watermark */
-static unsigned int ilk_cursor_wm_max(const struct drm_i915_private *dev_priv,
-				      int level,
-				      const struct intel_wm_config *config)
-{
-	/* HSW LP1+ watermarks w/ multiple pipes */
-	if (level > 0 && config->num_pipes_active > 1)
-		return 64;
-
-	/* otherwise just report max that registers can hold */
-	return ilk_cursor_wm_reg_max(dev_priv, level);
-}
-
-static void ilk_compute_wm_maximums(const struct drm_i915_private *dev_priv,
-				    int level,
-				    const struct intel_wm_config *config,
-				    enum intel_ddb_partitioning ddb_partitioning,
-				    struct ilk_wm_maximums *max)
-{
-	max->pri = ilk_plane_wm_max(dev_priv, level, config, ddb_partitioning, false);
-	max->spr = ilk_plane_wm_max(dev_priv, level, config, ddb_partitioning, true);
-	max->cur = ilk_cursor_wm_max(dev_priv, level, config);
-	max->fbc = ilk_fbc_wm_reg_max(dev_priv);
-}
-
-static void ilk_compute_wm_reg_maximums(const struct drm_i915_private *dev_priv,
-					int level,
-					struct ilk_wm_maximums *max)
-{
-	max->pri = ilk_plane_wm_reg_max(dev_priv, level, false);
-	max->spr = ilk_plane_wm_reg_max(dev_priv, level, true);
-	max->cur = ilk_cursor_wm_reg_max(dev_priv, level);
-	max->fbc = ilk_fbc_wm_reg_max(dev_priv);
-}
-
-static bool ilk_validate_wm_level(int level,
-				  const struct ilk_wm_maximums *max,
-				  struct intel_wm_level *result)
-{
-	bool ret;
-
-	/* already determined to be invalid? */
-	if (!result->enable)
-		return false;
-
-	result->enable = result->pri_val <= max->pri &&
-			 result->spr_val <= max->spr &&
-			 result->cur_val <= max->cur;
-
-	ret = result->enable;
-
-	/*
-	 * HACK until we can pre-compute everything,
-	 * and thus fail gracefully if LP0 watermarks
-	 * are exceeded...
-	 */
-	if (level == 0 && !result->enable) {
-		if (result->pri_val > max->pri)
-			DRM_DEBUG_KMS("Primary WM%d too large %u (max %u)\n",
-				      level, result->pri_val, max->pri);
-		if (result->spr_val > max->spr)
-			DRM_DEBUG_KMS("Sprite WM%d too large %u (max %u)\n",
-				      level, result->spr_val, max->spr);
-		if (result->cur_val > max->cur)
-			DRM_DEBUG_KMS("Cursor WM%d too large %u (max %u)\n",
-				      level, result->cur_val, max->cur);
-
-		result->pri_val = min_t(u32, result->pri_val, max->pri);
-		result->spr_val = min_t(u32, result->spr_val, max->spr);
-		result->cur_val = min_t(u32, result->cur_val, max->cur);
-		result->enable = true;
-	}
-
-	return ret;
-}
-
-static void ilk_compute_wm_level(const struct drm_i915_private *dev_priv,
-				 const struct intel_crtc *crtc,
-				 int level,
-				 struct intel_crtc_state *crtc_state,
-				 const struct intel_plane_state *pristate,
-				 const struct intel_plane_state *sprstate,
-				 const struct intel_plane_state *curstate,
-				 struct intel_wm_level *result)
-{
-	u16 pri_latency = dev_priv->display.wm.pri_latency[level];
-	u16 spr_latency = dev_priv->display.wm.spr_latency[level];
-	u16 cur_latency = dev_priv->display.wm.cur_latency[level];
-
-	/* WM1+ latency values stored in 0.5us units */
-	if (level > 0) {
-		pri_latency *= 5;
-		spr_latency *= 5;
-		cur_latency *= 5;
-	}
-
-	if (pristate) {
-		result->pri_val = ilk_compute_pri_wm(crtc_state, pristate,
-						     pri_latency, level);
-		result->fbc_val = ilk_compute_fbc_wm(crtc_state, pristate, result->pri_val);
-	}
-
-	if (sprstate)
-		result->spr_val = ilk_compute_spr_wm(crtc_state, sprstate, spr_latency);
-
-	if (curstate)
-		result->cur_val = ilk_compute_cur_wm(crtc_state, curstate, cur_latency);
-
-	result->enable = true;
-}
-
-static void hsw_read_wm_latency(struct drm_i915_private *i915, u16 wm[])
-{
-	u64 sskpd;
-
-	sskpd = intel_uncore_read64(&i915->uncore, MCH_SSKPD);
-
-	wm[0] = REG_FIELD_GET64(SSKPD_NEW_WM0_MASK_HSW, sskpd);
-	if (wm[0] == 0)
-		wm[0] = REG_FIELD_GET64(SSKPD_OLD_WM0_MASK_HSW, sskpd);
-	wm[1] = REG_FIELD_GET64(SSKPD_WM1_MASK_HSW, sskpd);
-	wm[2] = REG_FIELD_GET64(SSKPD_WM2_MASK_HSW, sskpd);
-	wm[3] = REG_FIELD_GET64(SSKPD_WM3_MASK_HSW, sskpd);
-	wm[4] = REG_FIELD_GET64(SSKPD_WM4_MASK_HSW, sskpd);
-}
-
-static void snb_read_wm_latency(struct drm_i915_private *i915, u16 wm[])
-{
-	u32 sskpd;
-
-	sskpd = intel_uncore_read(&i915->uncore, MCH_SSKPD);
-
-	wm[0] = REG_FIELD_GET(SSKPD_WM0_MASK_SNB, sskpd);
-	wm[1] = REG_FIELD_GET(SSKPD_WM1_MASK_SNB, sskpd);
-	wm[2] = REG_FIELD_GET(SSKPD_WM2_MASK_SNB, sskpd);
-	wm[3] = REG_FIELD_GET(SSKPD_WM3_MASK_SNB, sskpd);
-}
-
-static void ilk_read_wm_latency(struct drm_i915_private *i915, u16 wm[])
-{
-	u32 mltr;
-
-	mltr = intel_uncore_read(&i915->uncore, MLTR_ILK);
-
-	/* ILK primary LP0 latency is 700 ns */
-	wm[0] = 7;
-	wm[1] = REG_FIELD_GET(MLTR_WM1_MASK, mltr);
-	wm[2] = REG_FIELD_GET(MLTR_WM2_MASK, mltr);
-}
-
-static void intel_fixup_spr_wm_latency(struct drm_i915_private *dev_priv,
-				       u16 wm[5])
-{
-	/* ILK sprite LP0 latency is 1300 ns */
-	if (DISPLAY_VER(dev_priv) == 5)
-		wm[0] = 13;
-}
-
-static void intel_fixup_cur_wm_latency(struct drm_i915_private *dev_priv,
-				       u16 wm[5])
-{
-	/* ILK cursor LP0 latency is 1300 ns */
-	if (DISPLAY_VER(dev_priv) == 5)
-		wm[0] = 13;
-}
-
-int ilk_wm_max_level(const struct drm_i915_private *dev_priv)
-{
-	/* how many WM levels are we expecting */
-	if (HAS_HW_SAGV_WM(dev_priv))
-		return 5;
-	else if (DISPLAY_VER(dev_priv) >= 9)
-		return 7;
-	else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
-		return 4;
-	else if (DISPLAY_VER(dev_priv) >= 6)
-		return 3;
-	else
-		return 2;
-}
-
-void intel_print_wm_latency(struct drm_i915_private *dev_priv,
-			    const char *name, const u16 wm[])
-{
-	int level, max_level = ilk_wm_max_level(dev_priv);
-
-	for (level = 0; level <= max_level; level++) {
-		unsigned int latency = wm[level];
-
-		if (latency == 0) {
-			drm_dbg_kms(&dev_priv->drm,
-				    "%s WM%d latency not provided\n",
-				    name, level);
-			continue;
-		}
-
-		/*
-		 * - latencies are in us on gen9.
-		 * - before then, WM1+ latency values are in 0.5us units
-		 */
-		if (DISPLAY_VER(dev_priv) >= 9)
-			latency *= 10;
-		else if (level > 0)
-			latency *= 5;
-
-		drm_dbg_kms(&dev_priv->drm,
-			    "%s WM%d latency %u (%u.%u usec)\n", name, level,
-			    wm[level], latency / 10, latency % 10);
-	}
-}
-
-static bool ilk_increase_wm_latency(struct drm_i915_private *dev_priv,
-				    u16 wm[5], u16 min)
-{
-	int level, max_level = ilk_wm_max_level(dev_priv);
-
-	if (wm[0] >= min)
-		return false;
-
-	wm[0] = max(wm[0], min);
-	for (level = 1; level <= max_level; level++)
-		wm[level] = max_t(u16, wm[level], DIV_ROUND_UP(min, 5));
-
-	return true;
-}
-
-static void snb_wm_latency_quirk(struct drm_i915_private *dev_priv)
-{
-	bool changed;
-
-	/*
-	 * The BIOS provided WM memory latency values are often
-	 * inadequate for high resolution displays. Adjust them.
-	 */
-	changed = ilk_increase_wm_latency(dev_priv, dev_priv->display.wm.pri_latency, 12);
-	changed |= ilk_increase_wm_latency(dev_priv, dev_priv->display.wm.spr_latency, 12);
-	changed |= ilk_increase_wm_latency(dev_priv, dev_priv->display.wm.cur_latency, 12);
-
-	if (!changed)
-		return;
-
-	drm_dbg_kms(&dev_priv->drm,
-		    "WM latency values increased to avoid potential underruns\n");
-	intel_print_wm_latency(dev_priv, "Primary", dev_priv->display.wm.pri_latency);
-	intel_print_wm_latency(dev_priv, "Sprite", dev_priv->display.wm.spr_latency);
-	intel_print_wm_latency(dev_priv, "Cursor", dev_priv->display.wm.cur_latency);
-}
-
-static void snb_wm_lp3_irq_quirk(struct drm_i915_private *dev_priv)
-{
-	/*
-	 * On some SNB machines (Thinkpad X220 Tablet at least)
-	 * LP3 usage can cause vblank interrupts to be lost.
-	 * The DEIIR bit will go high but it looks like the CPU
-	 * never gets interrupted.
-	 *
-	 * It's not clear whether other interrupt source could
-	 * be affected or if this is somehow limited to vblank
-	 * interrupts only. To play it safe we disable LP3
-	 * watermarks entirely.
-	 */
-	if (dev_priv->display.wm.pri_latency[3] == 0 &&
-	    dev_priv->display.wm.spr_latency[3] == 0 &&
-	    dev_priv->display.wm.cur_latency[3] == 0)
-		return;
-
-	dev_priv->display.wm.pri_latency[3] = 0;
-	dev_priv->display.wm.spr_latency[3] = 0;
-	dev_priv->display.wm.cur_latency[3] = 0;
-
-	drm_dbg_kms(&dev_priv->drm,
-		    "LP3 watermarks disabled due to potential for lost interrupts\n");
-	intel_print_wm_latency(dev_priv, "Primary", dev_priv->display.wm.pri_latency);
-	intel_print_wm_latency(dev_priv, "Sprite", dev_priv->display.wm.spr_latency);
-	intel_print_wm_latency(dev_priv, "Cursor", dev_priv->display.wm.cur_latency);
-}
-
-static void ilk_setup_wm_latency(struct drm_i915_private *dev_priv)
-{
-	if (IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
-		hsw_read_wm_latency(dev_priv, dev_priv->display.wm.pri_latency);
-	else if (DISPLAY_VER(dev_priv) >= 6)
-		snb_read_wm_latency(dev_priv, dev_priv->display.wm.pri_latency);
-	else
-		ilk_read_wm_latency(dev_priv, dev_priv->display.wm.pri_latency);
-
-	memcpy(dev_priv->display.wm.spr_latency, dev_priv->display.wm.pri_latency,
-	       sizeof(dev_priv->display.wm.pri_latency));
-	memcpy(dev_priv->display.wm.cur_latency, dev_priv->display.wm.pri_latency,
-	       sizeof(dev_priv->display.wm.pri_latency));
-
-	intel_fixup_spr_wm_latency(dev_priv, dev_priv->display.wm.spr_latency);
-	intel_fixup_cur_wm_latency(dev_priv, dev_priv->display.wm.cur_latency);
-
-	intel_print_wm_latency(dev_priv, "Primary", dev_priv->display.wm.pri_latency);
-	intel_print_wm_latency(dev_priv, "Sprite", dev_priv->display.wm.spr_latency);
-	intel_print_wm_latency(dev_priv, "Cursor", dev_priv->display.wm.cur_latency);
-
-	if (DISPLAY_VER(dev_priv) == 6) {
-		snb_wm_latency_quirk(dev_priv);
-		snb_wm_lp3_irq_quirk(dev_priv);
-	}
-}
-
-static bool ilk_validate_pipe_wm(const struct drm_i915_private *dev_priv,
-				 struct intel_pipe_wm *pipe_wm)
-{
-	/* LP0 watermark maximums depend on this pipe alone */
-	const struct intel_wm_config config = {
-		.num_pipes_active = 1,
-		.sprites_enabled = pipe_wm->sprites_enabled,
-		.sprites_scaled = pipe_wm->sprites_scaled,
-	};
-	struct ilk_wm_maximums max;
-
-	/* LP0 watermarks always use 1/2 DDB partitioning */
-	ilk_compute_wm_maximums(dev_priv, 0, &config, INTEL_DDB_PART_1_2, &max);
-
-	/* At least LP0 must be valid */
-	if (!ilk_validate_wm_level(0, &max, &pipe_wm->wm[0])) {
-		drm_dbg_kms(&dev_priv->drm, "LP0 watermark invalid\n");
-		return false;
-	}
-
-	return true;
-}
-
-/* Compute new watermarks for the pipe */
-static int ilk_compute_pipe_wm(struct intel_atomic_state *state,
-			       struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
-	struct intel_crtc_state *crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-	struct intel_pipe_wm *pipe_wm;
-	struct intel_plane *plane;
-	const struct intel_plane_state *plane_state;
-	const struct intel_plane_state *pristate = NULL;
-	const struct intel_plane_state *sprstate = NULL;
-	const struct intel_plane_state *curstate = NULL;
-	int level, max_level = ilk_wm_max_level(dev_priv), usable_level;
-	struct ilk_wm_maximums max;
-
-	pipe_wm = &crtc_state->wm.ilk.optimal;
-
-	intel_atomic_crtc_state_for_each_plane_state(plane, plane_state, crtc_state) {
-		if (plane->base.type == DRM_PLANE_TYPE_PRIMARY)
-			pristate = plane_state;
-		else if (plane->base.type == DRM_PLANE_TYPE_OVERLAY)
-			sprstate = plane_state;
-		else if (plane->base.type == DRM_PLANE_TYPE_CURSOR)
-			curstate = plane_state;
-	}
-
-	pipe_wm->pipe_enabled = crtc_state->hw.active;
-	pipe_wm->sprites_enabled = crtc_state->active_planes & BIT(PLANE_SPRITE0);
-	pipe_wm->sprites_scaled = crtc_state->scaled_planes & BIT(PLANE_SPRITE0);
-
-	usable_level = max_level;
-
-	/* ILK/SNB: LP2+ watermarks only w/o sprites */
-	if (DISPLAY_VER(dev_priv) <= 6 && pipe_wm->sprites_enabled)
-		usable_level = 1;
-
-	/* ILK/SNB/IVB: LP1+ watermarks only w/o scaling */
-	if (pipe_wm->sprites_scaled)
-		usable_level = 0;
-
-	memset(&pipe_wm->wm, 0, sizeof(pipe_wm->wm));
-	ilk_compute_wm_level(dev_priv, crtc, 0, crtc_state,
-			     pristate, sprstate, curstate, &pipe_wm->wm[0]);
-
-	if (!ilk_validate_pipe_wm(dev_priv, pipe_wm))
-		return -EINVAL;
-
-	ilk_compute_wm_reg_maximums(dev_priv, 1, &max);
-
-	for (level = 1; level <= usable_level; level++) {
-		struct intel_wm_level *wm = &pipe_wm->wm[level];
-
-		ilk_compute_wm_level(dev_priv, crtc, level, crtc_state,
-				     pristate, sprstate, curstate, wm);
-
-		/*
-		 * Disable any watermark level that exceeds the
-		 * register maximums since such watermarks are
-		 * always invalid.
-		 */
-		if (!ilk_validate_wm_level(level, &max, wm)) {
-			memset(wm, 0, sizeof(*wm));
-			break;
-		}
-	}
-
-	return 0;
-}
-
-/*
- * Build a set of 'intermediate' watermark values that satisfy both the old
- * state and the new state.  These can be programmed to the hardware
- * immediately.
- */
-static int ilk_compute_intermediate_wm(struct intel_atomic_state *state,
-				       struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	struct intel_crtc_state *new_crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-	const struct intel_crtc_state *old_crtc_state =
-		intel_atomic_get_old_crtc_state(state, crtc);
-	struct intel_pipe_wm *a = &new_crtc_state->wm.ilk.intermediate;
-	const struct intel_pipe_wm *b = &old_crtc_state->wm.ilk.optimal;
-	int level, max_level = ilk_wm_max_level(dev_priv);
-
-	/*
-	 * Start with the final, target watermarks, then combine with the
-	 * currently active watermarks to get values that are safe both before
-	 * and after the vblank.
-	 */
-	*a = new_crtc_state->wm.ilk.optimal;
-	if (!new_crtc_state->hw.active ||
-	    drm_atomic_crtc_needs_modeset(&new_crtc_state->uapi) ||
-	    state->skip_intermediate_wm)
-		return 0;
-
-	a->pipe_enabled |= b->pipe_enabled;
-	a->sprites_enabled |= b->sprites_enabled;
-	a->sprites_scaled |= b->sprites_scaled;
-
-	for (level = 0; level <= max_level; level++) {
-		struct intel_wm_level *a_wm = &a->wm[level];
-		const struct intel_wm_level *b_wm = &b->wm[level];
-
-		a_wm->enable &= b_wm->enable;
-		a_wm->pri_val = max(a_wm->pri_val, b_wm->pri_val);
-		a_wm->spr_val = max(a_wm->spr_val, b_wm->spr_val);
-		a_wm->cur_val = max(a_wm->cur_val, b_wm->cur_val);
-		a_wm->fbc_val = max(a_wm->fbc_val, b_wm->fbc_val);
-	}
-
-	/*
-	 * We need to make sure that these merged watermark values are
-	 * actually a valid configuration themselves.  If they're not,
-	 * there's no safe way to transition from the old state to
-	 * the new state, so we need to fail the atomic transaction.
-	 */
-	if (!ilk_validate_pipe_wm(dev_priv, a))
-		return -EINVAL;
-
-	/*
-	 * If our intermediate WM are identical to the final WM, then we can
-	 * omit the post-vblank programming; only update if it's different.
-	 */
-	if (memcmp(a, &new_crtc_state->wm.ilk.optimal, sizeof(*a)) != 0)
-		new_crtc_state->wm.need_postvbl_update = true;
-
-	return 0;
-}
-
-/*
- * Merge the watermarks from all active pipes for a specific level.
- */
-static void ilk_merge_wm_level(struct drm_i915_private *dev_priv,
-			       int level,
-			       struct intel_wm_level *ret_wm)
-{
-	const struct intel_crtc *crtc;
-
-	ret_wm->enable = true;
-
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		const struct intel_pipe_wm *active = &crtc->wm.active.ilk;
-		const struct intel_wm_level *wm = &active->wm[level];
-
-		if (!active->pipe_enabled)
-			continue;
-
-		/*
-		 * The watermark values may have been used in the past,
-		 * so we must maintain them in the registers for some
-		 * time even if the level is now disabled.
-		 */
-		if (!wm->enable)
-			ret_wm->enable = false;
-
-		ret_wm->pri_val = max(ret_wm->pri_val, wm->pri_val);
-		ret_wm->spr_val = max(ret_wm->spr_val, wm->spr_val);
-		ret_wm->cur_val = max(ret_wm->cur_val, wm->cur_val);
-		ret_wm->fbc_val = max(ret_wm->fbc_val, wm->fbc_val);
-	}
-}
-
-/*
- * Merge all low power watermarks for all active pipes.
- */
-static void ilk_wm_merge(struct drm_i915_private *dev_priv,
-			 const struct intel_wm_config *config,
-			 const struct ilk_wm_maximums *max,
-			 struct intel_pipe_wm *merged)
-{
-	int level, max_level = ilk_wm_max_level(dev_priv);
-	int last_enabled_level = max_level;
-
-	/* ILK/SNB/IVB: LP1+ watermarks only w/ single pipe */
-	if ((DISPLAY_VER(dev_priv) <= 6 || IS_IVYBRIDGE(dev_priv)) &&
-	    config->num_pipes_active > 1)
-		last_enabled_level = 0;
-
-	/* ILK: FBC WM must be disabled always */
-	merged->fbc_wm_enabled = DISPLAY_VER(dev_priv) >= 6;
-
-	/* merge each WM1+ level */
-	for (level = 1; level <= max_level; level++) {
-		struct intel_wm_level *wm = &merged->wm[level];
-
-		ilk_merge_wm_level(dev_priv, level, wm);
-
-		if (level > last_enabled_level)
-			wm->enable = false;
-		else if (!ilk_validate_wm_level(level, max, wm))
-			/* make sure all following levels get disabled */
-			last_enabled_level = level - 1;
-
-		/*
-		 * The spec says it is preferred to disable
-		 * FBC WMs instead of disabling a WM level.
-		 */
-		if (wm->fbc_val > max->fbc) {
-			if (wm->enable)
-				merged->fbc_wm_enabled = false;
-			wm->fbc_val = 0;
-		}
-	}
-
-	/* ILK: LP2+ must be disabled when FBC WM is disabled but FBC enabled */
-	if (DISPLAY_VER(dev_priv) == 5 && HAS_FBC(dev_priv) &&
-	    dev_priv->params.enable_fbc && !merged->fbc_wm_enabled) {
-		for (level = 2; level <= max_level; level++) {
-			struct intel_wm_level *wm = &merged->wm[level];
-
-			wm->enable = false;
-		}
-	}
-}
-
-static int ilk_wm_lp_to_level(int wm_lp, const struct intel_pipe_wm *pipe_wm)
-{
-	/* LP1,LP2,LP3 levels are either 1,2,3 or 1,3,4 */
-	return wm_lp + (wm_lp >= 2 && pipe_wm->wm[4].enable);
-}
-
-/* The value we need to program into the WM_LPx latency field */
-static unsigned int ilk_wm_lp_latency(struct drm_i915_private *dev_priv,
-				      int level)
-{
-	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
-		return 2 * level;
-	else
-		return dev_priv->display.wm.pri_latency[level];
-}
-
-static void ilk_compute_wm_results(struct drm_i915_private *dev_priv,
-				   const struct intel_pipe_wm *merged,
-				   enum intel_ddb_partitioning partitioning,
-				   struct ilk_wm_values *results)
-{
-	struct intel_crtc *crtc;
-	int level, wm_lp;
-
-	results->enable_fbc_wm = merged->fbc_wm_enabled;
-	results->partitioning = partitioning;
-
-	/* LP1+ register values */
-	for (wm_lp = 1; wm_lp <= 3; wm_lp++) {
-		const struct intel_wm_level *r;
-
-		level = ilk_wm_lp_to_level(wm_lp, merged);
-
-		r = &merged->wm[level];
-
-		/*
-		 * Maintain the watermark values even if the level is
-		 * disabled. Doing otherwise could cause underruns.
-		 */
-		results->wm_lp[wm_lp - 1] =
-			WM_LP_LATENCY(ilk_wm_lp_latency(dev_priv, level)) |
-			WM_LP_PRIMARY(r->pri_val) |
-			WM_LP_CURSOR(r->cur_val);
-
-		if (r->enable)
-			results->wm_lp[wm_lp - 1] |= WM_LP_ENABLE;
-
-		if (DISPLAY_VER(dev_priv) >= 8)
-			results->wm_lp[wm_lp - 1] |= WM_LP_FBC_BDW(r->fbc_val);
-		else
-			results->wm_lp[wm_lp - 1] |= WM_LP_FBC_ILK(r->fbc_val);
-
-		results->wm_lp_spr[wm_lp - 1] = WM_LP_SPRITE(r->spr_val);
-
-		/*
-		 * Always set WM_LP_SPRITE_EN when spr_val != 0, even if the
-		 * level is disabled. Doing otherwise could cause underruns.
-		 */
-		if (DISPLAY_VER(dev_priv) <= 6 && r->spr_val) {
-			drm_WARN_ON(&dev_priv->drm, wm_lp != 1);
-			results->wm_lp_spr[wm_lp - 1] |= WM_LP_SPRITE_ENABLE;
-		}
-	}
-
-	/* LP0 register values */
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		enum pipe pipe = crtc->pipe;
-		const struct intel_pipe_wm *pipe_wm = &crtc->wm.active.ilk;
-		const struct intel_wm_level *r = &pipe_wm->wm[0];
-
-		if (drm_WARN_ON(&dev_priv->drm, !r->enable))
-			continue;
-
-		results->wm_pipe[pipe] =
-			WM0_PIPE_PRIMARY(r->pri_val) |
-			WM0_PIPE_SPRITE(r->spr_val) |
-			WM0_PIPE_CURSOR(r->cur_val);
-	}
-}
-
-/* Find the result with the highest level enabled. Check for enable_fbc_wm in
- * case both are at the same level. Prefer r1 in case they're the same. */
-static struct intel_pipe_wm *
-ilk_find_best_result(struct drm_i915_private *dev_priv,
-		     struct intel_pipe_wm *r1,
-		     struct intel_pipe_wm *r2)
-{
-	int level, max_level = ilk_wm_max_level(dev_priv);
-	int level1 = 0, level2 = 0;
-
-	for (level = 1; level <= max_level; level++) {
-		if (r1->wm[level].enable)
-			level1 = level;
-		if (r2->wm[level].enable)
-			level2 = level;
-	}
-
-	if (level1 == level2) {
-		if (r2->fbc_wm_enabled && !r1->fbc_wm_enabled)
-			return r2;
-		else
-			return r1;
-	} else if (level1 > level2) {
-		return r1;
-	} else {
-		return r2;
-	}
-}
-
-/* dirty bits used to track which watermarks need changes */
-#define WM_DIRTY_PIPE(pipe) (1 << (pipe))
-#define WM_DIRTY_LP(wm_lp) (1 << (15 + (wm_lp)))
-#define WM_DIRTY_LP_ALL (WM_DIRTY_LP(1) | WM_DIRTY_LP(2) | WM_DIRTY_LP(3))
-#define WM_DIRTY_FBC (1 << 24)
-#define WM_DIRTY_DDB (1 << 25)
-
-static unsigned int ilk_compute_wm_dirty(struct drm_i915_private *dev_priv,
-					 const struct ilk_wm_values *old,
-					 const struct ilk_wm_values *new)
-{
-	unsigned int dirty = 0;
-	enum pipe pipe;
-	int wm_lp;
-
-	for_each_pipe(dev_priv, pipe) {
-		if (old->wm_pipe[pipe] != new->wm_pipe[pipe]) {
-			dirty |= WM_DIRTY_PIPE(pipe);
-			/* Must disable LP1+ watermarks too */
-			dirty |= WM_DIRTY_LP_ALL;
-		}
-	}
-
-	if (old->enable_fbc_wm != new->enable_fbc_wm) {
-		dirty |= WM_DIRTY_FBC;
-		/* Must disable LP1+ watermarks too */
-		dirty |= WM_DIRTY_LP_ALL;
-	}
-
-	if (old->partitioning != new->partitioning) {
-		dirty |= WM_DIRTY_DDB;
-		/* Must disable LP1+ watermarks too */
-		dirty |= WM_DIRTY_LP_ALL;
-	}
-
-	/* LP1+ watermarks already deemed dirty, no need to continue */
-	if (dirty & WM_DIRTY_LP_ALL)
-		return dirty;
-
-	/* Find the lowest numbered LP1+ watermark in need of an update... */
-	for (wm_lp = 1; wm_lp <= 3; wm_lp++) {
-		if (old->wm_lp[wm_lp - 1] != new->wm_lp[wm_lp - 1] ||
-		    old->wm_lp_spr[wm_lp - 1] != new->wm_lp_spr[wm_lp - 1])
-			break;
-	}
-
-	/* ...and mark it and all higher numbered LP1+ watermarks as dirty */
-	for (; wm_lp <= 3; wm_lp++)
-		dirty |= WM_DIRTY_LP(wm_lp);
-
-	return dirty;
-}
-
-static bool _ilk_disable_lp_wm(struct drm_i915_private *dev_priv,
-			       unsigned int dirty)
-{
-	struct ilk_wm_values *previous = &dev_priv->display.wm.hw;
-	bool changed = false;
-
-	if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] & WM_LP_ENABLE) {
-		previous->wm_lp[2] &= ~WM_LP_ENABLE;
-		intel_uncore_write(&dev_priv->uncore, WM3_LP_ILK, previous->wm_lp[2]);
-		changed = true;
-	}
-	if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] & WM_LP_ENABLE) {
-		previous->wm_lp[1] &= ~WM_LP_ENABLE;
-		intel_uncore_write(&dev_priv->uncore, WM2_LP_ILK, previous->wm_lp[1]);
-		changed = true;
-	}
-	if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] & WM_LP_ENABLE) {
-		previous->wm_lp[0] &= ~WM_LP_ENABLE;
-		intel_uncore_write(&dev_priv->uncore, WM1_LP_ILK, previous->wm_lp[0]);
-		changed = true;
-	}
-
-	/*
-	 * Don't touch WM_LP_SPRITE_ENABLE here.
-	 * Doing so could cause underruns.
-	 */
-
-	return changed;
-}
-
-/*
- * The spec says we shouldn't write when we don't need, because every write
- * causes WMs to be re-evaluated, expending some power.
- */
-static void ilk_write_wm_values(struct drm_i915_private *dev_priv,
-				struct ilk_wm_values *results)
-{
-	struct ilk_wm_values *previous = &dev_priv->display.wm.hw;
-	unsigned int dirty;
-	u32 val;
-
-	dirty = ilk_compute_wm_dirty(dev_priv, previous, results);
-	if (!dirty)
-		return;
-
-	_ilk_disable_lp_wm(dev_priv, dirty);
-
-	if (dirty & WM_DIRTY_PIPE(PIPE_A))
-		intel_uncore_write(&dev_priv->uncore, WM0_PIPE_ILK(PIPE_A), results->wm_pipe[0]);
-	if (dirty & WM_DIRTY_PIPE(PIPE_B))
-		intel_uncore_write(&dev_priv->uncore, WM0_PIPE_ILK(PIPE_B), results->wm_pipe[1]);
-	if (dirty & WM_DIRTY_PIPE(PIPE_C))
-		intel_uncore_write(&dev_priv->uncore, WM0_PIPE_ILK(PIPE_C), results->wm_pipe[2]);
-
-	if (dirty & WM_DIRTY_DDB) {
-		if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
-			val = intel_uncore_read(&dev_priv->uncore, WM_MISC);
-			if (results->partitioning == INTEL_DDB_PART_1_2)
-				val &= ~WM_MISC_DATA_PARTITION_5_6;
-			else
-				val |= WM_MISC_DATA_PARTITION_5_6;
-			intel_uncore_write(&dev_priv->uncore, WM_MISC, val);
-		} else {
-			val = intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL2);
-			if (results->partitioning == INTEL_DDB_PART_1_2)
-				val &= ~DISP_DATA_PARTITION_5_6;
-			else
-				val |= DISP_DATA_PARTITION_5_6;
-			intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL2, val);
-		}
-	}
-
-	if (dirty & WM_DIRTY_FBC) {
-		val = intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL);
-		if (results->enable_fbc_wm)
-			val &= ~DISP_FBC_WM_DIS;
-		else
-			val |= DISP_FBC_WM_DIS;
-		intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, val);
-	}
-
-	if (dirty & WM_DIRTY_LP(1) &&
-	    previous->wm_lp_spr[0] != results->wm_lp_spr[0])
-		intel_uncore_write(&dev_priv->uncore, WM1S_LP_ILK, results->wm_lp_spr[0]);
-
-	if (DISPLAY_VER(dev_priv) >= 7) {
-		if (dirty & WM_DIRTY_LP(2) && previous->wm_lp_spr[1] != results->wm_lp_spr[1])
-			intel_uncore_write(&dev_priv->uncore, WM2S_LP_IVB, results->wm_lp_spr[1]);
-		if (dirty & WM_DIRTY_LP(3) && previous->wm_lp_spr[2] != results->wm_lp_spr[2])
-			intel_uncore_write(&dev_priv->uncore, WM3S_LP_IVB, results->wm_lp_spr[2]);
-	}
-
-	if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] != results->wm_lp[0])
-		intel_uncore_write(&dev_priv->uncore, WM1_LP_ILK, results->wm_lp[0]);
-	if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] != results->wm_lp[1])
-		intel_uncore_write(&dev_priv->uncore, WM2_LP_ILK, results->wm_lp[1]);
-	if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] != results->wm_lp[2])
-		intel_uncore_write(&dev_priv->uncore, WM3_LP_ILK, results->wm_lp[2]);
-
-	dev_priv->display.wm.hw = *results;
-}
-
-bool ilk_disable_lp_wm(struct drm_i915_private *dev_priv)
-{
-	return _ilk_disable_lp_wm(dev_priv, WM_DIRTY_LP_ALL);
-}
-
-static void ilk_compute_wm_config(struct drm_i915_private *dev_priv,
-				  struct intel_wm_config *config)
-{
-	struct intel_crtc *crtc;
-
-	/* Compute the currently _active_ config */
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		const struct intel_pipe_wm *wm = &crtc->wm.active.ilk;
-
-		if (!wm->pipe_enabled)
-			continue;
-
-		config->sprites_enabled |= wm->sprites_enabled;
-		config->sprites_scaled |= wm->sprites_scaled;
-		config->num_pipes_active++;
-	}
-}
-
-static void ilk_program_watermarks(struct drm_i915_private *dev_priv)
-{
-	struct intel_pipe_wm lp_wm_1_2 = {}, lp_wm_5_6 = {}, *best_lp_wm;
-	struct ilk_wm_maximums max;
-	struct intel_wm_config config = {};
-	struct ilk_wm_values results = {};
-	enum intel_ddb_partitioning partitioning;
-
-	ilk_compute_wm_config(dev_priv, &config);
-
-	ilk_compute_wm_maximums(dev_priv, 1, &config, INTEL_DDB_PART_1_2, &max);
-	ilk_wm_merge(dev_priv, &config, &max, &lp_wm_1_2);
-
-	/* 5/6 split only in single pipe config on IVB+ */
-	if (DISPLAY_VER(dev_priv) >= 7 &&
-	    config.num_pipes_active == 1 && config.sprites_enabled) {
-		ilk_compute_wm_maximums(dev_priv, 1, &config, INTEL_DDB_PART_5_6, &max);
-		ilk_wm_merge(dev_priv, &config, &max, &lp_wm_5_6);
-
-		best_lp_wm = ilk_find_best_result(dev_priv, &lp_wm_1_2, &lp_wm_5_6);
-	} else {
-		best_lp_wm = &lp_wm_1_2;
-	}
-
-	partitioning = (best_lp_wm == &lp_wm_1_2) ?
-		       INTEL_DDB_PART_1_2 : INTEL_DDB_PART_5_6;
-
-	ilk_compute_wm_results(dev_priv, best_lp_wm, partitioning, &results);
-
-	ilk_write_wm_values(dev_priv, &results);
-}
-
-static void ilk_initial_watermarks(struct intel_atomic_state *state,
-				   struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	const struct intel_crtc_state *crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-
-	mutex_lock(&dev_priv->display.wm.wm_mutex);
-	crtc->wm.active.ilk = crtc_state->wm.ilk.intermediate;
-	ilk_program_watermarks(dev_priv);
-	mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-static void ilk_optimize_watermarks(struct intel_atomic_state *state,
-				    struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	const struct intel_crtc_state *crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-
-	if (!crtc_state->wm.need_postvbl_update)
-		return;
-
-	mutex_lock(&dev_priv->display.wm.wm_mutex);
-	crtc->wm.active.ilk = crtc_state->wm.ilk.optimal;
-	ilk_program_watermarks(dev_priv);
-	mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-static void ilk_pipe_wm_get_hw_state(struct intel_crtc *crtc)
-{
-	struct drm_device *dev = crtc->base.dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct ilk_wm_values *hw = &dev_priv->display.wm.hw;
-	struct intel_crtc_state *crtc_state = to_intel_crtc_state(crtc->base.state);
-	struct intel_pipe_wm *active = &crtc_state->wm.ilk.optimal;
-	enum pipe pipe = crtc->pipe;
-
-	hw->wm_pipe[pipe] = intel_uncore_read(&dev_priv->uncore, WM0_PIPE_ILK(pipe));
-
-	memset(active, 0, sizeof(*active));
-
-	active->pipe_enabled = crtc->active;
-
-	if (active->pipe_enabled) {
-		u32 tmp = hw->wm_pipe[pipe];
-
-		/*
-		 * For active pipes LP0 watermark is marked as
-		 * enabled, and LP1+ watermaks as disabled since
-		 * we can't really reverse compute them in case
-		 * multiple pipes are active.
-		 */
-		active->wm[0].enable = true;
-		active->wm[0].pri_val = REG_FIELD_GET(WM0_PIPE_PRIMARY_MASK, tmp);
-		active->wm[0].spr_val = REG_FIELD_GET(WM0_PIPE_SPRITE_MASK, tmp);
-		active->wm[0].cur_val = REG_FIELD_GET(WM0_PIPE_CURSOR_MASK, tmp);
-	} else {
-		int level, max_level = ilk_wm_max_level(dev_priv);
-
-		/*
-		 * For inactive pipes, all watermark levels
-		 * should be marked as enabled but zeroed,
-		 * which is what we'd compute them to.
-		 */
-		for (level = 0; level <= max_level; level++)
-			active->wm[level].enable = true;
-	}
-
-	crtc->wm.active.ilk = *active;
-}
-
-#define _FW_WM(value, plane) \
-	(((value) & DSPFW_ ## plane ## _MASK) >> DSPFW_ ## plane ## _SHIFT)
-#define _FW_WM_VLV(value, plane) \
-	(((value) & DSPFW_ ## plane ## _MASK_VLV) >> DSPFW_ ## plane ## _SHIFT)
-
-static void g4x_read_wm_values(struct drm_i915_private *dev_priv,
-			       struct g4x_wm_values *wm)
-{
-	u32 tmp;
-
-	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW1);
-	wm->sr.plane = _FW_WM(tmp, SR);
-	wm->pipe[PIPE_B].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORB);
-	wm->pipe[PIPE_B].plane[PLANE_PRIMARY] = _FW_WM(tmp, PLANEB);
-	wm->pipe[PIPE_A].plane[PLANE_PRIMARY] = _FW_WM(tmp, PLANEA);
-
-	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW2);
-	wm->fbc_en = tmp & DSPFW_FBC_SR_EN;
-	wm->sr.fbc = _FW_WM(tmp, FBC_SR);
-	wm->hpll.fbc = _FW_WM(tmp, FBC_HPLL_SR);
-	wm->pipe[PIPE_B].plane[PLANE_SPRITE0] = _FW_WM(tmp, SPRITEB);
-	wm->pipe[PIPE_A].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORA);
-	wm->pipe[PIPE_A].plane[PLANE_SPRITE0] = _FW_WM(tmp, SPRITEA);
-
-	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW3);
-	wm->hpll_en = tmp & DSPFW_HPLL_SR_EN;
-	wm->sr.cursor = _FW_WM(tmp, CURSOR_SR);
-	wm->hpll.cursor = _FW_WM(tmp, HPLL_CURSOR);
-	wm->hpll.plane = _FW_WM(tmp, HPLL_SR);
-}
-
-static void vlv_read_wm_values(struct drm_i915_private *dev_priv,
-			       struct vlv_wm_values *wm)
-{
-	enum pipe pipe;
-	u32 tmp;
-
-	for_each_pipe(dev_priv, pipe) {
-		tmp = intel_uncore_read(&dev_priv->uncore, VLV_DDL(pipe));
-
-		wm->ddl[pipe].plane[PLANE_PRIMARY] =
-			(tmp >> DDL_PLANE_SHIFT) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK);
-		wm->ddl[pipe].plane[PLANE_CURSOR] =
-			(tmp >> DDL_CURSOR_SHIFT) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK);
-		wm->ddl[pipe].plane[PLANE_SPRITE0] =
-			(tmp >> DDL_SPRITE_SHIFT(0)) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK);
-		wm->ddl[pipe].plane[PLANE_SPRITE1] =
-			(tmp >> DDL_SPRITE_SHIFT(1)) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK);
-	}
-
-	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW1);
-	wm->sr.plane = _FW_WM(tmp, SR);
-	wm->pipe[PIPE_B].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORB);
-	wm->pipe[PIPE_B].plane[PLANE_PRIMARY] = _FW_WM_VLV(tmp, PLANEB);
-	wm->pipe[PIPE_A].plane[PLANE_PRIMARY] = _FW_WM_VLV(tmp, PLANEA);
-
-	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW2);
-	wm->pipe[PIPE_A].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITEB);
-	wm->pipe[PIPE_A].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORA);
-	wm->pipe[PIPE_A].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEA);
-
-	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW3);
-	wm->sr.cursor = _FW_WM(tmp, CURSOR_SR);
-
-	if (IS_CHERRYVIEW(dev_priv)) {
-		tmp = intel_uncore_read(&dev_priv->uncore, DSPFW7_CHV);
-		wm->pipe[PIPE_B].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITED);
-		wm->pipe[PIPE_B].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEC);
-
-		tmp = intel_uncore_read(&dev_priv->uncore, DSPFW8_CHV);
-		wm->pipe[PIPE_C].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITEF);
-		wm->pipe[PIPE_C].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEE);
-
-		tmp = intel_uncore_read(&dev_priv->uncore, DSPFW9_CHV);
-		wm->pipe[PIPE_C].plane[PLANE_PRIMARY] = _FW_WM_VLV(tmp, PLANEC);
-		wm->pipe[PIPE_C].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORC);
-
-		tmp = intel_uncore_read(&dev_priv->uncore, DSPHOWM);
-		wm->sr.plane |= _FW_WM(tmp, SR_HI) << 9;
-		wm->pipe[PIPE_C].plane[PLANE_SPRITE1] |= _FW_WM(tmp, SPRITEF_HI) << 8;
-		wm->pipe[PIPE_C].plane[PLANE_SPRITE0] |= _FW_WM(tmp, SPRITEE_HI) << 8;
-		wm->pipe[PIPE_C].plane[PLANE_PRIMARY] |= _FW_WM(tmp, PLANEC_HI) << 8;
-		wm->pipe[PIPE_B].plane[PLANE_SPRITE1] |= _FW_WM(tmp, SPRITED_HI) << 8;
-		wm->pipe[PIPE_B].plane[PLANE_SPRITE0] |= _FW_WM(tmp, SPRITEC_HI) << 8;
-		wm->pipe[PIPE_B].plane[PLANE_PRIMARY] |= _FW_WM(tmp, PLANEB_HI) << 8;
-		wm->pipe[PIPE_A].plane[PLANE_SPRITE1] |= _FW_WM(tmp, SPRITEB_HI) << 8;
-		wm->pipe[PIPE_A].plane[PLANE_SPRITE0] |= _FW_WM(tmp, SPRITEA_HI) << 8;
-		wm->pipe[PIPE_A].plane[PLANE_PRIMARY] |= _FW_WM(tmp, PLANEA_HI) << 8;
-	} else {
-		tmp = intel_uncore_read(&dev_priv->uncore, DSPFW7);
-		wm->pipe[PIPE_B].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITED);
-		wm->pipe[PIPE_B].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEC);
-
-		tmp = intel_uncore_read(&dev_priv->uncore, DSPHOWM);
-		wm->sr.plane |= _FW_WM(tmp, SR_HI) << 9;
-		wm->pipe[PIPE_B].plane[PLANE_SPRITE1] |= _FW_WM(tmp, SPRITED_HI) << 8;
-		wm->pipe[PIPE_B].plane[PLANE_SPRITE0] |= _FW_WM(tmp, SPRITEC_HI) << 8;
-		wm->pipe[PIPE_B].plane[PLANE_PRIMARY] |= _FW_WM(tmp, PLANEB_HI) << 8;
-		wm->pipe[PIPE_A].plane[PLANE_SPRITE1] |= _FW_WM(tmp, SPRITEB_HI) << 8;
-		wm->pipe[PIPE_A].plane[PLANE_SPRITE0] |= _FW_WM(tmp, SPRITEA_HI) << 8;
-		wm->pipe[PIPE_A].plane[PLANE_PRIMARY] |= _FW_WM(tmp, PLANEA_HI) << 8;
-	}
-}
-
-#undef _FW_WM
-#undef _FW_WM_VLV
-
-void g4x_wm_get_hw_state(struct drm_i915_private *dev_priv)
-{
-	struct g4x_wm_values *wm = &dev_priv->display.wm.g4x;
-	struct intel_crtc *crtc;
-
-	g4x_read_wm_values(dev_priv, wm);
-
-	wm->cxsr = intel_uncore_read(&dev_priv->uncore, FW_BLC_SELF) & FW_BLC_SELF_EN;
-
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		struct intel_crtc_state *crtc_state =
-			to_intel_crtc_state(crtc->base.state);
-		struct g4x_wm_state *active = &crtc->wm.active.g4x;
-		struct g4x_pipe_wm *raw;
-		enum pipe pipe = crtc->pipe;
-		enum plane_id plane_id;
-		int level, max_level;
-
-		active->cxsr = wm->cxsr;
-		active->hpll_en = wm->hpll_en;
-		active->fbc_en = wm->fbc_en;
-
-		active->sr = wm->sr;
-		active->hpll = wm->hpll;
-
-		for_each_plane_id_on_crtc(crtc, plane_id) {
-			active->wm.plane[plane_id] =
-				wm->pipe[pipe].plane[plane_id];
-		}
-
-		if (wm->cxsr && wm->hpll_en)
-			max_level = G4X_WM_LEVEL_HPLL;
-		else if (wm->cxsr)
-			max_level = G4X_WM_LEVEL_SR;
-		else
-			max_level = G4X_WM_LEVEL_NORMAL;
-
-		level = G4X_WM_LEVEL_NORMAL;
-		raw = &crtc_state->wm.g4x.raw[level];
-		for_each_plane_id_on_crtc(crtc, plane_id)
-			raw->plane[plane_id] = active->wm.plane[plane_id];
-
-		level = G4X_WM_LEVEL_SR;
-		if (level > max_level)
-			goto out;
-
-		raw = &crtc_state->wm.g4x.raw[level];
-		raw->plane[PLANE_PRIMARY] = active->sr.plane;
-		raw->plane[PLANE_CURSOR] = active->sr.cursor;
-		raw->plane[PLANE_SPRITE0] = 0;
-		raw->fbc = active->sr.fbc;
-
-		level = G4X_WM_LEVEL_HPLL;
-		if (level > max_level)
-			goto out;
-
-		raw = &crtc_state->wm.g4x.raw[level];
-		raw->plane[PLANE_PRIMARY] = active->hpll.plane;
-		raw->plane[PLANE_CURSOR] = active->hpll.cursor;
-		raw->plane[PLANE_SPRITE0] = 0;
-		raw->fbc = active->hpll.fbc;
-
-		level++;
-	out:
-		for_each_plane_id_on_crtc(crtc, plane_id)
-			g4x_raw_plane_wm_set(crtc_state, level,
-					     plane_id, USHRT_MAX);
-		g4x_raw_fbc_wm_set(crtc_state, level, USHRT_MAX);
-
-		g4x_invalidate_wms(crtc, active, level);
-
-		crtc_state->wm.g4x.optimal = *active;
-		crtc_state->wm.g4x.intermediate = *active;
-
-		drm_dbg_kms(&dev_priv->drm,
-			    "Initial watermarks: pipe %c, plane=%d, cursor=%d, sprite=%d\n",
-			    pipe_name(pipe),
-			    wm->pipe[pipe].plane[PLANE_PRIMARY],
-			    wm->pipe[pipe].plane[PLANE_CURSOR],
-			    wm->pipe[pipe].plane[PLANE_SPRITE0]);
-	}
-
-	drm_dbg_kms(&dev_priv->drm,
-		    "Initial SR watermarks: plane=%d, cursor=%d fbc=%d\n",
-		    wm->sr.plane, wm->sr.cursor, wm->sr.fbc);
-	drm_dbg_kms(&dev_priv->drm,
-		    "Initial HPLL watermarks: plane=%d, SR cursor=%d fbc=%d\n",
-		    wm->hpll.plane, wm->hpll.cursor, wm->hpll.fbc);
-	drm_dbg_kms(&dev_priv->drm, "Initial SR=%s HPLL=%s FBC=%s\n",
-		    str_yes_no(wm->cxsr), str_yes_no(wm->hpll_en),
-		    str_yes_no(wm->fbc_en));
-}
-
-void g4x_wm_sanitize(struct drm_i915_private *dev_priv)
-{
-	struct intel_plane *plane;
-	struct intel_crtc *crtc;
-
-	mutex_lock(&dev_priv->display.wm.wm_mutex);
-
-	for_each_intel_plane(&dev_priv->drm, plane) {
-		struct intel_crtc *crtc =
-			intel_crtc_for_pipe(dev_priv, plane->pipe);
-		struct intel_crtc_state *crtc_state =
-			to_intel_crtc_state(crtc->base.state);
-		struct intel_plane_state *plane_state =
-			to_intel_plane_state(plane->base.state);
-		enum plane_id plane_id = plane->id;
-		int level, num_levels = intel_wm_num_levels(dev_priv);
-
-		if (plane_state->uapi.visible)
-			continue;
-
-		for (level = 0; level < num_levels; level++) {
-			struct g4x_pipe_wm *raw =
-				&crtc_state->wm.g4x.raw[level];
-
-			raw->plane[plane_id] = 0;
-
-			if (plane_id == PLANE_PRIMARY)
-				raw->fbc = 0;
-		}
-	}
-
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		struct intel_crtc_state *crtc_state =
-			to_intel_crtc_state(crtc->base.state);
-		int ret;
-
-		ret = _g4x_compute_pipe_wm(crtc_state);
-		drm_WARN_ON(&dev_priv->drm, ret);
-
-		crtc_state->wm.g4x.intermediate =
-			crtc_state->wm.g4x.optimal;
-		crtc->wm.active.g4x = crtc_state->wm.g4x.optimal;
-	}
-
-	g4x_program_watermarks(dev_priv);
-
-	mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-void vlv_wm_get_hw_state(struct drm_i915_private *dev_priv)
-{
-	struct vlv_wm_values *wm = &dev_priv->display.wm.vlv;
-	struct intel_crtc *crtc;
-	u32 val;
-
-	vlv_read_wm_values(dev_priv, wm);
-
-	wm->cxsr = intel_uncore_read(&dev_priv->uncore, FW_BLC_SELF_VLV) & FW_CSPWRDWNEN;
-	wm->level = VLV_WM_LEVEL_PM2;
-
-	if (IS_CHERRYVIEW(dev_priv)) {
-		vlv_punit_get(dev_priv);
-
-		val = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM);
-		if (val & DSP_MAXFIFO_PM5_ENABLE)
-			wm->level = VLV_WM_LEVEL_PM5;
-
-		/*
-		 * If DDR DVFS is disabled in the BIOS, Punit
-		 * will never ack the request. So if that happens
-		 * assume we don't have to enable/disable DDR DVFS
-		 * dynamically. To test that just set the REQ_ACK
-		 * bit to poke the Punit, but don't change the
-		 * HIGH/LOW bits so that we don't actually change
-		 * the current state.
-		 */
-		val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2);
-		val |= FORCE_DDR_FREQ_REQ_ACK;
-		vlv_punit_write(dev_priv, PUNIT_REG_DDR_SETUP2, val);
-
-		if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2) &
-			      FORCE_DDR_FREQ_REQ_ACK) == 0, 3)) {
-			drm_dbg_kms(&dev_priv->drm,
-				    "Punit not acking DDR DVFS request, "
-				    "assuming DDR DVFS is disabled\n");
-			dev_priv->display.wm.max_level = VLV_WM_LEVEL_PM5;
-		} else {
-			val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2);
-			if ((val & FORCE_DDR_HIGH_FREQ) == 0)
-				wm->level = VLV_WM_LEVEL_DDR_DVFS;
-		}
-
-		vlv_punit_put(dev_priv);
-	}
-
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		struct intel_crtc_state *crtc_state =
-			to_intel_crtc_state(crtc->base.state);
-		struct vlv_wm_state *active = &crtc->wm.active.vlv;
-		const struct vlv_fifo_state *fifo_state =
-			&crtc_state->wm.vlv.fifo_state;
-		enum pipe pipe = crtc->pipe;
-		enum plane_id plane_id;
-		int level;
-
-		vlv_get_fifo_size(crtc_state);
-
-		active->num_levels = wm->level + 1;
-		active->cxsr = wm->cxsr;
-
-		for (level = 0; level < active->num_levels; level++) {
-			struct g4x_pipe_wm *raw =
-				&crtc_state->wm.vlv.raw[level];
-
-			active->sr[level].plane = wm->sr.plane;
-			active->sr[level].cursor = wm->sr.cursor;
-
-			for_each_plane_id_on_crtc(crtc, plane_id) {
-				active->wm[level].plane[plane_id] =
-					wm->pipe[pipe].plane[plane_id];
-
-				raw->plane[plane_id] =
-					vlv_invert_wm_value(active->wm[level].plane[plane_id],
-							    fifo_state->plane[plane_id]);
-			}
-		}
-
-		for_each_plane_id_on_crtc(crtc, plane_id)
-			vlv_raw_plane_wm_set(crtc_state, level,
-					     plane_id, USHRT_MAX);
-		vlv_invalidate_wms(crtc, active, level);
-
-		crtc_state->wm.vlv.optimal = *active;
-		crtc_state->wm.vlv.intermediate = *active;
-
-		drm_dbg_kms(&dev_priv->drm,
-			    "Initial watermarks: pipe %c, plane=%d, cursor=%d, sprite0=%d, sprite1=%d\n",
-			    pipe_name(pipe),
-			    wm->pipe[pipe].plane[PLANE_PRIMARY],
-			    wm->pipe[pipe].plane[PLANE_CURSOR],
-			    wm->pipe[pipe].plane[PLANE_SPRITE0],
-			    wm->pipe[pipe].plane[PLANE_SPRITE1]);
-	}
-
-	drm_dbg_kms(&dev_priv->drm,
-		    "Initial watermarks: SR plane=%d, SR cursor=%d level=%d cxsr=%d\n",
-		    wm->sr.plane, wm->sr.cursor, wm->level, wm->cxsr);
-}
-
-void vlv_wm_sanitize(struct drm_i915_private *dev_priv)
-{
-	struct intel_plane *plane;
-	struct intel_crtc *crtc;
-
-	mutex_lock(&dev_priv->display.wm.wm_mutex);
-
-	for_each_intel_plane(&dev_priv->drm, plane) {
-		struct intel_crtc *crtc =
-			intel_crtc_for_pipe(dev_priv, plane->pipe);
-		struct intel_crtc_state *crtc_state =
-			to_intel_crtc_state(crtc->base.state);
-		struct intel_plane_state *plane_state =
-			to_intel_plane_state(plane->base.state);
-		enum plane_id plane_id = plane->id;
-		int level, num_levels = intel_wm_num_levels(dev_priv);
-
-		if (plane_state->uapi.visible)
-			continue;
-
-		for (level = 0; level < num_levels; level++) {
-			struct g4x_pipe_wm *raw =
-				&crtc_state->wm.vlv.raw[level];
-
-			raw->plane[plane_id] = 0;
-		}
-	}
-
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		struct intel_crtc_state *crtc_state =
-			to_intel_crtc_state(crtc->base.state);
-		int ret;
-
-		ret = _vlv_compute_pipe_wm(crtc_state);
-		drm_WARN_ON(&dev_priv->drm, ret);
-
-		crtc_state->wm.vlv.intermediate =
-			crtc_state->wm.vlv.optimal;
-		crtc->wm.active.vlv = crtc_state->wm.vlv.optimal;
-	}
-
-	vlv_program_watermarks(dev_priv);
-
-	mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-/*
- * FIXME should probably kill this and improve
- * the real watermark readout/sanitation instead
- */
-static void ilk_init_lp_watermarks(struct drm_i915_private *dev_priv)
-{
-	intel_uncore_write(&dev_priv->uncore, WM3_LP_ILK, intel_uncore_read(&dev_priv->uncore, WM3_LP_ILK) & ~WM_LP_ENABLE);
-	intel_uncore_write(&dev_priv->uncore, WM2_LP_ILK, intel_uncore_read(&dev_priv->uncore, WM2_LP_ILK) & ~WM_LP_ENABLE);
-	intel_uncore_write(&dev_priv->uncore, WM1_LP_ILK, intel_uncore_read(&dev_priv->uncore, WM1_LP_ILK) & ~WM_LP_ENABLE);
-
-	/*
-	 * Don't touch WM_LP_SPRITE_ENABLE here.
-	 * Doing so could cause underruns.
-	 */
-}
-
-void ilk_wm_get_hw_state(struct drm_i915_private *dev_priv)
-{
-	struct ilk_wm_values *hw = &dev_priv->display.wm.hw;
-	struct intel_crtc *crtc;
-
-	ilk_init_lp_watermarks(dev_priv);
-
-	for_each_intel_crtc(&dev_priv->drm, crtc)
-		ilk_pipe_wm_get_hw_state(crtc);
-
-	hw->wm_lp[0] = intel_uncore_read(&dev_priv->uncore, WM1_LP_ILK);
-	hw->wm_lp[1] = intel_uncore_read(&dev_priv->uncore, WM2_LP_ILK);
-	hw->wm_lp[2] = intel_uncore_read(&dev_priv->uncore, WM3_LP_ILK);
-
-	hw->wm_lp_spr[0] = intel_uncore_read(&dev_priv->uncore, WM1S_LP_ILK);
-	if (DISPLAY_VER(dev_priv) >= 7) {
-		hw->wm_lp_spr[1] = intel_uncore_read(&dev_priv->uncore, WM2S_LP_IVB);
-		hw->wm_lp_spr[2] = intel_uncore_read(&dev_priv->uncore, WM3S_LP_IVB);
-	}
-
-	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
-		hw->partitioning = (intel_uncore_read(&dev_priv->uncore, WM_MISC) & WM_MISC_DATA_PARTITION_5_6) ?
-			INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2;
-	else if (IS_IVYBRIDGE(dev_priv))
-		hw->partitioning = (intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL2) & DISP_DATA_PARTITION_5_6) ?
-			INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2;
-
-	hw->enable_fbc_wm =
-		!(intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) & DISP_FBC_WM_DIS);
-}
-
-static void ibx_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	/*
-	 * On Ibex Peak and Cougar Point, we need to disable clock
-	 * gating for the panel power sequencer or it will fail to
-	 * start up when no ports are active.
-	 */
-	intel_uncore_write(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
-}
-
-static void g4x_disable_trickle_feed(struct drm_i915_private *dev_priv)
-{
-	enum pipe pipe;
-
-	for_each_pipe(dev_priv, pipe) {
-		intel_uncore_write(&dev_priv->uncore, DSPCNTR(pipe),
-			   intel_uncore_read(&dev_priv->uncore, DSPCNTR(pipe)) |
-			   DISP_TRICKLE_FEED_DISABLE);
-
-		intel_uncore_write(&dev_priv->uncore, DSPSURF(pipe), intel_uncore_read(&dev_priv->uncore, DSPSURF(pipe)));
-		intel_uncore_posting_read(&dev_priv->uncore, DSPSURF(pipe));
-	}
-}
-
-static void ilk_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	u32 dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE;
-
-	/*
-	 * Required for FBC
-	 * WaFbcDisableDpfcClockGating:ilk
-	 */
-	dspclk_gate |= ILK_DPFCRUNIT_CLOCK_GATE_DISABLE |
-		   ILK_DPFCUNIT_CLOCK_GATE_DISABLE |
-		   ILK_DPFDUNIT_CLOCK_GATE_ENABLE;
-
-	intel_uncore_write(&dev_priv->uncore, PCH_3DCGDIS0,
-		   MARIUNIT_CLOCK_GATE_DISABLE |
-		   SVSMUNIT_CLOCK_GATE_DISABLE);
-	intel_uncore_write(&dev_priv->uncore, PCH_3DCGDIS1,
-		   VFMUNIT_CLOCK_GATE_DISABLE);
-
-	/*
-	 * According to the spec the following bits should be set in
-	 * order to enable memory self-refresh
-	 * The bit 22/21 of 0x42004
-	 * The bit 5 of 0x42020
-	 * The bit 15 of 0x45000
-	 */
-	intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2,
-		   (intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2) |
-		    ILK_DPARB_GATE | ILK_VSDPFD_FULL));
-	dspclk_gate |= ILK_DPARBUNIT_CLOCK_GATE_ENABLE;
-	intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL,
-		   (intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) |
-		    DISP_FBC_WM_DIS));
-
-	/*
-	 * Based on the document from hardware guys the following bits
-	 * should be set unconditionally in order to enable FBC.
-	 * The bit 22 of 0x42000
-	 * The bit 22 of 0x42004
-	 * The bit 7,8,9 of 0x42020.
-	 */
-	if (IS_IRONLAKE_M(dev_priv)) {
-		/* WaFbcAsynchFlipDisableFbcQueue:ilk */
-		intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1,
-			   intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1) |
-			   ILK_FBCQ_DIS);
-		intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2,
-			   intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2) |
-			   ILK_DPARB_GATE);
-	}
-
-	intel_uncore_write(&dev_priv->uncore, ILK_DSPCLK_GATE_D, dspclk_gate);
-
-	intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2,
-		   intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2) |
-		   ILK_ELPIN_409_SELECT);
-
-	g4x_disable_trickle_feed(dev_priv);
-
-	ibx_init_clock_gating(dev_priv);
-}
-
-static void cpt_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	enum pipe pipe;
-	u32 val;
-
-	/*
-	 * On Ibex Peak and Cougar Point, we need to disable clock
-	 * gating for the panel power sequencer or it will fail to
-	 * start up when no ports are active.
-	 */
-	intel_uncore_write(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE |
-		   PCH_DPLUNIT_CLOCK_GATE_DISABLE |
-		   PCH_CPUNIT_CLOCK_GATE_DISABLE);
-	intel_uncore_write(&dev_priv->uncore, SOUTH_CHICKEN2, intel_uncore_read(&dev_priv->uncore, SOUTH_CHICKEN2) |
-		   DPLS_EDP_PPS_FIX_DIS);
-	/* The below fixes the weird display corruption, a few pixels shifted
-	 * downward, on (only) LVDS of some HP laptops with IVY.
-	 */
-	for_each_pipe(dev_priv, pipe) {
-		val = intel_uncore_read(&dev_priv->uncore, TRANS_CHICKEN2(pipe));
-		val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
-		val &= ~TRANS_CHICKEN2_FDI_POLARITY_REVERSED;
-		if (dev_priv->display.vbt.fdi_rx_polarity_inverted)
-			val |= TRANS_CHICKEN2_FDI_POLARITY_REVERSED;
-		val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_COUNTER;
-		val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_MODESWITCH;
-		intel_uncore_write(&dev_priv->uncore, TRANS_CHICKEN2(pipe), val);
-	}
-	/* WADP0ClockGatingDisable */
-	for_each_pipe(dev_priv, pipe) {
-		intel_uncore_write(&dev_priv->uncore, TRANS_CHICKEN1(pipe),
-			   TRANS_CHICKEN1_DP0UNIT_GC_DISABLE);
-	}
-}
-
-static void gen6_check_mch_setup(struct drm_i915_private *dev_priv)
-{
-	u32 tmp;
-
-	tmp = intel_uncore_read(&dev_priv->uncore, MCH_SSKPD);
-	if (REG_FIELD_GET(SSKPD_WM0_MASK_SNB, tmp) != 12)
-		drm_dbg_kms(&dev_priv->drm,
-			    "Wrong MCH_SSKPD value: 0x%08x This can cause underruns.\n",
-			    tmp);
-}
-
-static void gen6_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	u32 dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE;
-
-	intel_uncore_write(&dev_priv->uncore, ILK_DSPCLK_GATE_D, dspclk_gate);
-
-	intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2,
-		   intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2) |
-		   ILK_ELPIN_409_SELECT);
-
-	intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL1,
-		   intel_uncore_read(&dev_priv->uncore, GEN6_UCGCTL1) |
-		   GEN6_BLBUNIT_CLOCK_GATE_DISABLE |
-		   GEN6_CSUNIT_CLOCK_GATE_DISABLE);
-
-	/* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock
-	 * gating disable must be set.  Failure to set it results in
-	 * flickering pixels due to Z write ordering failures after
-	 * some amount of runtime in the Mesa "fire" demo, and Unigine
-	 * Sanctuary and Tropics, and apparently anything else with
-	 * alpha test or pixel discard.
-	 *
-	 * According to the spec, bit 11 (RCCUNIT) must also be set,
-	 * but we didn't debug actual testcases to find it out.
-	 *
-	 * WaDisableRCCUnitClockGating:snb
-	 * WaDisableRCPBUnitClockGating:snb
-	 */
-	intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL2,
-		   GEN6_RCPBUNIT_CLOCK_GATE_DISABLE |
-		   GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
-
-	/*
-	 * According to the spec the following bits should be
-	 * set in order to enable memory self-refresh and fbc:
-	 * The bit21 and bit22 of 0x42000
-	 * The bit21 and bit22 of 0x42004
-	 * The bit5 and bit7 of 0x42020
-	 * The bit14 of 0x70180
-	 * The bit14 of 0x71180
-	 *
-	 * WaFbcAsynchFlipDisableFbcQueue:snb
-	 */
-	intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1,
-		   intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1) |
-		   ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS);
-	intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2,
-		   intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2) |
-		   ILK_DPARB_GATE | ILK_VSDPFD_FULL);
-	intel_uncore_write(&dev_priv->uncore, ILK_DSPCLK_GATE_D,
-		   intel_uncore_read(&dev_priv->uncore, ILK_DSPCLK_GATE_D) |
-		   ILK_DPARBUNIT_CLOCK_GATE_ENABLE  |
-		   ILK_DPFDUNIT_CLOCK_GATE_ENABLE);
-
-	g4x_disable_trickle_feed(dev_priv);
-
-	cpt_init_clock_gating(dev_priv);
-
-	gen6_check_mch_setup(dev_priv);
-}
-
-static void lpt_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	/*
-	 * TODO: this bit should only be enabled when really needed, then
-	 * disabled when not needed anymore in order to save power.
-	 */
-	if (HAS_PCH_LPT_LP(dev_priv))
-		intel_uncore_write(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D,
-			   intel_uncore_read(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D) |
-			   PCH_LP_PARTITION_LEVEL_DISABLE);
-
-	/* WADPOClockGatingDisable:hsw */
-	intel_uncore_write(&dev_priv->uncore, TRANS_CHICKEN1(PIPE_A),
-		   intel_uncore_read(&dev_priv->uncore, TRANS_CHICKEN1(PIPE_A)) |
-		   TRANS_CHICKEN1_DP0UNIT_GC_DISABLE);
-}
-
-static void lpt_suspend_hw(struct drm_i915_private *dev_priv)
-{
-	if (HAS_PCH_LPT_LP(dev_priv)) {
-		u32 val = intel_uncore_read(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D);
-
-		val &= ~PCH_LP_PARTITION_LEVEL_DISABLE;
-		intel_uncore_write(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D, val);
-	}
-}
-
-static void gen8_set_l3sqc_credits(struct drm_i915_private *dev_priv,
-				   int general_prio_credits,
-				   int high_prio_credits)
-{
-	u32 misccpctl;
-	u32 val;
-
-	/* WaTempDisableDOPClkGating:bdw */
-	misccpctl = intel_uncore_read(&dev_priv->uncore, GEN7_MISCCPCTL);
-	intel_uncore_write(&dev_priv->uncore, GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE);
-
-	val = intel_uncore_read(&dev_priv->uncore, GEN8_L3SQCREG1);
-	val &= ~L3_PRIO_CREDITS_MASK;
-	val |= L3_GENERAL_PRIO_CREDITS(general_prio_credits);
-	val |= L3_HIGH_PRIO_CREDITS(high_prio_credits);
-	intel_uncore_write(&dev_priv->uncore, GEN8_L3SQCREG1, val);
-
-	/*
-	 * Wait at least 100 clocks before re-enabling clock gating.
-	 * See the definition of L3SQCREG1 in BSpec.
-	 */
-	intel_uncore_posting_read(&dev_priv->uncore, GEN8_L3SQCREG1);
-	udelay(1);
-	intel_uncore_write(&dev_priv->uncore, GEN7_MISCCPCTL, misccpctl);
-}
-
-static void icl_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	/* Wa_1409120013:icl,ehl */
-	intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A),
-			   DPFC_CHICKEN_COMP_DUMMY_PIXEL);
-
-	/*Wa_14010594013:icl, ehl */
-	intel_uncore_rmw(&dev_priv->uncore, GEN8_CHICKEN_DCPR_1,
-			 0, ICL_DELAY_PMRSP);
-}
-
-static void gen12lp_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	/* Wa_1409120013 */
-	if (DISPLAY_VER(dev_priv) == 12)
-		intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A),
-				   DPFC_CHICKEN_COMP_DUMMY_PIXEL);
-
-	/* Wa_1409825376:tgl (pre-prod)*/
-	if (IS_TGL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_C0))
-		intel_uncore_write(&dev_priv->uncore, GEN9_CLKGATE_DIS_3, intel_uncore_read(&dev_priv->uncore, GEN9_CLKGATE_DIS_3) |
-			   TGL_VRH_GATING_DIS);
-
-	/* Wa_14013723622:tgl,rkl,dg1,adl-s */
-	if (DISPLAY_VER(dev_priv) == 12)
-		intel_uncore_rmw(&dev_priv->uncore, CLKREQ_POLICY,
-				 CLKREQ_POLICY_MEM_UP_OVRD, 0);
-}
-
-static void adlp_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	gen12lp_init_clock_gating(dev_priv);
-
-	/* Wa_22011091694:adlp */
-	intel_de_rmw(dev_priv, GEN9_CLKGATE_DIS_5, 0, DPCE_GATING_DIS);
-
-	/* Bspec/49189 Initialize Sequence */
-	intel_de_rmw(dev_priv, GEN8_CHICKEN_DCPR_1, DDI_CLOCK_REG_ACCESS, 0);
-}
-
-static void dg1_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	gen12lp_init_clock_gating(dev_priv);
-
-	/* Wa_1409836686:dg1[a0] */
-	if (IS_DG1_GRAPHICS_STEP(dev_priv, STEP_A0, STEP_B0))
-		intel_uncore_write(&dev_priv->uncore, GEN9_CLKGATE_DIS_3, intel_uncore_read(&dev_priv->uncore, GEN9_CLKGATE_DIS_3) |
-			   DPT_GATING_DIS);
-}
-
-static void xehpsdv_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	/* Wa_22010146351:xehpsdv */
-	if (IS_XEHPSDV_GRAPHICS_STEP(dev_priv, STEP_A0, STEP_B0))
-		intel_uncore_rmw(&dev_priv->uncore, XEHP_CLOCK_GATE_DIS, 0, SGR_DIS);
-}
-
-static void dg2_init_clock_gating(struct drm_i915_private *i915)
-{
-	/* Wa_22010954014:dg2 */
-	intel_uncore_rmw(&i915->uncore, XEHP_CLOCK_GATE_DIS, 0,
-			 SGSI_SIDECLK_DIS);
-
-	/*
-	 * Wa_14010733611:dg2_g10
-	 * Wa_22010146351:dg2_g10
-	 */
-	if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_A0, STEP_B0))
-		intel_uncore_rmw(&i915->uncore, XEHP_CLOCK_GATE_DIS, 0,
-				 SGR_DIS | SGGI_DIS);
-}
-
-static void pvc_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	/* Wa_14012385139:pvc */
-	if (IS_PVC_BD_STEP(dev_priv, STEP_A0, STEP_B0))
-		intel_uncore_rmw(&dev_priv->uncore, XEHP_CLOCK_GATE_DIS, 0, SGR_DIS);
-
-	/* Wa_22010954014:pvc */
-	if (IS_PVC_BD_STEP(dev_priv, STEP_A0, STEP_B0))
-		intel_uncore_rmw(&dev_priv->uncore, XEHP_CLOCK_GATE_DIS, 0, SGSI_SIDECLK_DIS);
-}
-
-static void cnp_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	if (!HAS_PCH_CNP(dev_priv))
-		return;
-
-	/* Display WA #1181 WaSouthDisplayDisablePWMCGEGating: cnp */
-	intel_uncore_write(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D, intel_uncore_read(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D) |
-		   CNP_PWM_CGE_GATING_DISABLE);
-}
-
-static void cfl_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	cnp_init_clock_gating(dev_priv);
-	gen9_init_clock_gating(dev_priv);
-
-	/* WAC6entrylatency:cfl */
-	intel_uncore_write(&dev_priv->uncore, FBC_LLC_READ_CTRL, intel_uncore_read(&dev_priv->uncore, FBC_LLC_READ_CTRL) |
-		   FBC_LLC_FULLY_OPEN);
-
-	/*
-	 * WaFbcTurnOffFbcWatermark:cfl
-	 * Display WA #0562: cfl
-	 */
-	intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) |
-		   DISP_FBC_WM_DIS);
-
-	/*
-	 * WaFbcNukeOnHostModify:cfl
-	 * Display WA #0873: cfl
-	 */
-	intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A),
-			   intel_uncore_read(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A)) |
-			   DPFC_NUKE_ON_ANY_MODIFICATION);
-}
-
-static void kbl_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	gen9_init_clock_gating(dev_priv);
-
-	/* WAC6entrylatency:kbl */
-	intel_uncore_write(&dev_priv->uncore, FBC_LLC_READ_CTRL, intel_uncore_read(&dev_priv->uncore, FBC_LLC_READ_CTRL) |
-		   FBC_LLC_FULLY_OPEN);
-
-	/* WaDisableSDEUnitClockGating:kbl */
-	if (IS_KBL_GRAPHICS_STEP(dev_priv, 0, STEP_C0))
-		intel_uncore_write(&dev_priv->uncore, GEN8_UCGCTL6, intel_uncore_read(&dev_priv->uncore, GEN8_UCGCTL6) |
-			   GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
-
-	/* WaDisableGamClockGating:kbl */
-	if (IS_KBL_GRAPHICS_STEP(dev_priv, 0, STEP_C0))
-		intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL1, intel_uncore_read(&dev_priv->uncore, GEN6_UCGCTL1) |
-			   GEN6_GAMUNIT_CLOCK_GATE_DISABLE);
-
-	/*
-	 * WaFbcTurnOffFbcWatermark:kbl
-	 * Display WA #0562: kbl
-	 */
-	intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) |
-		   DISP_FBC_WM_DIS);
-
-	/*
-	 * WaFbcNukeOnHostModify:kbl
-	 * Display WA #0873: kbl
-	 */
-	intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A),
-			   intel_uncore_read(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A)) |
-			   DPFC_NUKE_ON_ANY_MODIFICATION);
-}
-
-static void skl_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	gen9_init_clock_gating(dev_priv);
-
-	/* WaDisableDopClockGating:skl */
-	intel_uncore_write(&dev_priv->uncore, GEN7_MISCCPCTL, intel_uncore_read(&dev_priv->uncore, GEN7_MISCCPCTL) &
-		   ~GEN7_DOP_CLOCK_GATE_ENABLE);
-
-	/* WAC6entrylatency:skl */
-	intel_uncore_write(&dev_priv->uncore, FBC_LLC_READ_CTRL, intel_uncore_read(&dev_priv->uncore, FBC_LLC_READ_CTRL) |
-		   FBC_LLC_FULLY_OPEN);
-
-	/*
-	 * WaFbcTurnOffFbcWatermark:skl
-	 * Display WA #0562: skl
-	 */
-	intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) |
-		   DISP_FBC_WM_DIS);
-
-	/*
-	 * WaFbcNukeOnHostModify:skl
-	 * Display WA #0873: skl
-	 */
-	intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A),
-			   intel_uncore_read(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A)) |
-			   DPFC_NUKE_ON_ANY_MODIFICATION);
-
-	/*
-	 * WaFbcHighMemBwCorruptionAvoidance:skl
-	 * Display WA #0883: skl
-	 */
-	intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A),
-			   intel_uncore_read(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A)) |
-			   DPFC_DISABLE_DUMMY0);
-}
-
-static void bdw_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	enum pipe pipe;
-
-	/* WaFbcAsynchFlipDisableFbcQueue:hsw,bdw */
-	intel_uncore_write(&dev_priv->uncore, CHICKEN_PIPESL_1(PIPE_A),
-		   intel_uncore_read(&dev_priv->uncore, CHICKEN_PIPESL_1(PIPE_A)) |
-		   HSW_FBCQ_DIS);
-
-	/* WaSwitchSolVfFArbitrationPriority:bdw */
-	intel_uncore_write(&dev_priv->uncore, GAM_ECOCHK, intel_uncore_read(&dev_priv->uncore, GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL);
-
-	/* WaPsrDPAMaskVBlankInSRD:bdw */
-	intel_uncore_write(&dev_priv->uncore, CHICKEN_PAR1_1,
-		   intel_uncore_read(&dev_priv->uncore, CHICKEN_PAR1_1) | DPA_MASK_VBLANK_SRD);
-
-	for_each_pipe(dev_priv, pipe) {
-		/* WaPsrDPRSUnmaskVBlankInSRD:bdw */
-		intel_uncore_write(&dev_priv->uncore, CHICKEN_PIPESL_1(pipe),
-			   intel_uncore_read(&dev_priv->uncore, CHICKEN_PIPESL_1(pipe)) |
-			   BDW_DPRS_MASK_VBLANK_SRD);
-	}
-
-	/* WaVSRefCountFullforceMissDisable:bdw */
-	/* WaDSRefCountFullforceMissDisable:bdw */
-	intel_uncore_write(&dev_priv->uncore, GEN7_FF_THREAD_MODE,
-		   intel_uncore_read(&dev_priv->uncore, GEN7_FF_THREAD_MODE) &
-		   ~(GEN8_FF_DS_REF_CNT_FFME | GEN7_FF_VS_REF_CNT_FFME));
-
-	intel_uncore_write(&dev_priv->uncore, RING_PSMI_CTL(RENDER_RING_BASE),
-		   _MASKED_BIT_ENABLE(GEN8_RC_SEMA_IDLE_MSG_DISABLE));
-
-	/* WaDisableSDEUnitClockGating:bdw */
-	intel_uncore_write(&dev_priv->uncore, GEN8_UCGCTL6, intel_uncore_read(&dev_priv->uncore, GEN8_UCGCTL6) |
-		   GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
-
-	/* WaProgramL3SqcReg1Default:bdw */
-	gen8_set_l3sqc_credits(dev_priv, 30, 2);
-
-	/* WaKVMNotificationOnConfigChange:bdw */
-	intel_uncore_write(&dev_priv->uncore, CHICKEN_PAR2_1, intel_uncore_read(&dev_priv->uncore, CHICKEN_PAR2_1)
-		   | KVM_CONFIG_CHANGE_NOTIFICATION_SELECT);
-
-	lpt_init_clock_gating(dev_priv);
-
-	/* WaDisableDopClockGating:bdw
-	 *
-	 * Also see the CHICKEN2 write in bdw_init_workarounds() to disable DOP
-	 * clock gating.
-	 */
-	intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL1,
-		   intel_uncore_read(&dev_priv->uncore, GEN6_UCGCTL1) | GEN6_EU_TCUNIT_CLOCK_GATE_DISABLE);
-}
-
-static void hsw_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	/* WaFbcAsynchFlipDisableFbcQueue:hsw,bdw */
-	intel_uncore_write(&dev_priv->uncore, CHICKEN_PIPESL_1(PIPE_A),
-		   intel_uncore_read(&dev_priv->uncore, CHICKEN_PIPESL_1(PIPE_A)) |
-		   HSW_FBCQ_DIS);
-
-	/* This is required by WaCatErrorRejectionIssue:hsw */
-	intel_uncore_write(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
-		   intel_uncore_read(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
-		   GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB);
-
-	/* WaSwitchSolVfFArbitrationPriority:hsw */
-	intel_uncore_write(&dev_priv->uncore, GAM_ECOCHK, intel_uncore_read(&dev_priv->uncore, GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL);
-
-	lpt_init_clock_gating(dev_priv);
-}
-
-static void ivb_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	u32 snpcr;
-
-	intel_uncore_write(&dev_priv->uncore, ILK_DSPCLK_GATE_D, ILK_VRHUNIT_CLOCK_GATE_DISABLE);
-
-	/* WaFbcAsynchFlipDisableFbcQueue:ivb */
-	intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1,
-		   intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1) |
-		   ILK_FBCQ_DIS);
-
-	/* WaDisableBackToBackFlipFix:ivb */
-	intel_uncore_write(&dev_priv->uncore, IVB_CHICKEN3,
-		   CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
-		   CHICKEN3_DGMG_DONE_FIX_DISABLE);
-
-	if (IS_IVB_GT1(dev_priv))
-		intel_uncore_write(&dev_priv->uncore, GEN7_ROW_CHICKEN2,
-			   _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE));
-	else {
-		/* must write both registers */
-		intel_uncore_write(&dev_priv->uncore, GEN7_ROW_CHICKEN2,
-			   _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE));
-		intel_uncore_write(&dev_priv->uncore, GEN7_ROW_CHICKEN2_GT2,
-			   _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE));
-	}
-
-	/*
-	 * According to the spec, bit 13 (RCZUNIT) must be set on IVB.
-	 * This implements the WaDisableRCZUnitClockGating:ivb workaround.
-	 */
-	intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL2,
-		   GEN6_RCZUNIT_CLOCK_GATE_DISABLE);
-
-	/* This is required by WaCatErrorRejectionIssue:ivb */
-	intel_uncore_write(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
-			intel_uncore_read(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
-			GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB);
-
-	g4x_disable_trickle_feed(dev_priv);
-
-	snpcr = intel_uncore_read(&dev_priv->uncore, GEN6_MBCUNIT_SNPCR);
-	snpcr &= ~GEN6_MBC_SNPCR_MASK;
-	snpcr |= GEN6_MBC_SNPCR_MED;
-	intel_uncore_write(&dev_priv->uncore, GEN6_MBCUNIT_SNPCR, snpcr);
-
-	if (!HAS_PCH_NOP(dev_priv))
-		cpt_init_clock_gating(dev_priv);
-
-	gen6_check_mch_setup(dev_priv);
-}
-
-static void vlv_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	/* WaDisableBackToBackFlipFix:vlv */
-	intel_uncore_write(&dev_priv->uncore, IVB_CHICKEN3,
-		   CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
-		   CHICKEN3_DGMG_DONE_FIX_DISABLE);
-
-	/* WaDisableDopClockGating:vlv */
-	intel_uncore_write(&dev_priv->uncore, GEN7_ROW_CHICKEN2,
-		   _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE));
-
-	/* This is required by WaCatErrorRejectionIssue:vlv */
-	intel_uncore_write(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
-		   intel_uncore_read(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
-		   GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB);
-
-	/*
-	 * According to the spec, bit 13 (RCZUNIT) must be set on IVB.
-	 * This implements the WaDisableRCZUnitClockGating:vlv workaround.
-	 */
-	intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL2,
-		   GEN6_RCZUNIT_CLOCK_GATE_DISABLE);
-
-	/* WaDisableL3Bank2xClockGate:vlv
-	 * Disabling L3 clock gating- MMIO 940c[25] = 1
-	 * Set bit 25, to disable L3_BANK_2x_CLK_GATING */
-	intel_uncore_write(&dev_priv->uncore, GEN7_UCGCTL4,
-		   intel_uncore_read(&dev_priv->uncore, GEN7_UCGCTL4) | GEN7_L3BANK2X_CLOCK_GATE_DISABLE);
-
-	/*
-	 * WaDisableVLVClockGating_VBIIssue:vlv
-	 * Disable clock gating on th GCFG unit to prevent a delay
-	 * in the reporting of vblank events.
-	 */
-	intel_uncore_write(&dev_priv->uncore, VLV_GUNIT_CLOCK_GATE, GCFG_DIS);
-}
-
-static void chv_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	/* WaVSRefCountFullforceMissDisable:chv */
-	/* WaDSRefCountFullforceMissDisable:chv */
-	intel_uncore_write(&dev_priv->uncore, GEN7_FF_THREAD_MODE,
-		   intel_uncore_read(&dev_priv->uncore, GEN7_FF_THREAD_MODE) &
-		   ~(GEN8_FF_DS_REF_CNT_FFME | GEN7_FF_VS_REF_CNT_FFME));
-
-	/* WaDisableSemaphoreAndSyncFlipWait:chv */
-	intel_uncore_write(&dev_priv->uncore, RING_PSMI_CTL(RENDER_RING_BASE),
-		   _MASKED_BIT_ENABLE(GEN8_RC_SEMA_IDLE_MSG_DISABLE));
-
-	/* WaDisableCSUnitClockGating:chv */
-	intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL1, intel_uncore_read(&dev_priv->uncore, GEN6_UCGCTL1) |
-		   GEN6_CSUNIT_CLOCK_GATE_DISABLE);
-
-	/* WaDisableSDEUnitClockGating:chv */
-	intel_uncore_write(&dev_priv->uncore, GEN8_UCGCTL6, intel_uncore_read(&dev_priv->uncore, GEN8_UCGCTL6) |
-		   GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
-
-	/*
-	 * WaProgramL3SqcReg1Default:chv
-	 * See gfxspecs/Related Documents/Performance Guide/
-	 * LSQC Setting Recommendations.
-	 */
-	gen8_set_l3sqc_credits(dev_priv, 38, 2);
-}
-
-static void g4x_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	u32 dspclk_gate;
-
-	intel_uncore_write(&dev_priv->uncore, RENCLK_GATE_D1, 0);
-	intel_uncore_write(&dev_priv->uncore, RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE |
-		   GS_UNIT_CLOCK_GATE_DISABLE |
-		   CL_UNIT_CLOCK_GATE_DISABLE);
-	intel_uncore_write(&dev_priv->uncore, RAMCLK_GATE_D, 0);
-	dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE |
-		OVRUNIT_CLOCK_GATE_DISABLE |
-		OVCUNIT_CLOCK_GATE_DISABLE;
-	if (IS_GM45(dev_priv))
-		dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE;
-	intel_uncore_write(&dev_priv->uncore, DSPCLK_GATE_D(dev_priv), dspclk_gate);
-
-	g4x_disable_trickle_feed(dev_priv);
-}
-
-static void i965gm_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	struct intel_uncore *uncore = &dev_priv->uncore;
-
-	intel_uncore_write(uncore, RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE);
-	intel_uncore_write(uncore, RENCLK_GATE_D2, 0);
-	intel_uncore_write(uncore, DSPCLK_GATE_D(dev_priv), 0);
-	intel_uncore_write(uncore, RAMCLK_GATE_D, 0);
-	intel_uncore_write16(uncore, DEUC, 0);
-	intel_uncore_write(uncore,
-			   MI_ARB_STATE,
-			   _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE));
-}
-
-static void i965g_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	intel_uncore_write(&dev_priv->uncore, RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE |
-		   I965_RCC_CLOCK_GATE_DISABLE |
-		   I965_RCPB_CLOCK_GATE_DISABLE |
-		   I965_ISC_CLOCK_GATE_DISABLE |
-		   I965_FBC_CLOCK_GATE_DISABLE);
-	intel_uncore_write(&dev_priv->uncore, RENCLK_GATE_D2, 0);
-	intel_uncore_write(&dev_priv->uncore, MI_ARB_STATE,
-		   _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE));
-}
-
-static void gen3_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	u32 dstate = intel_uncore_read(&dev_priv->uncore, D_STATE);
-
-	dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING |
-		DSTATE_DOT_CLOCK_GATING;
-	intel_uncore_write(&dev_priv->uncore, D_STATE, dstate);
-
-	if (IS_PINEVIEW(dev_priv))
-		intel_uncore_write(&dev_priv->uncore, ECOSKPD(RENDER_RING_BASE),
-				   _MASKED_BIT_ENABLE(ECO_GATING_CX_ONLY));
-
-	/* IIR "flip pending" means done if this bit is set */
-	intel_uncore_write(&dev_priv->uncore, ECOSKPD(RENDER_RING_BASE),
-			   _MASKED_BIT_DISABLE(ECO_FLIP_DONE));
-
-	/* interrupts should cause a wake up from C3 */
-	intel_uncore_write(&dev_priv->uncore, INSTPM, _MASKED_BIT_ENABLE(INSTPM_AGPBUSY_INT_EN));
-
-	/* On GEN3 we really need to make sure the ARB C3 LP bit is set */
-	intel_uncore_write(&dev_priv->uncore, MI_ARB_STATE, _MASKED_BIT_ENABLE(MI_ARB_C3_LP_WRITE_ENABLE));
-
-	intel_uncore_write(&dev_priv->uncore, MI_ARB_STATE,
-		   _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE));
-}
-
-static void i85x_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	intel_uncore_write(&dev_priv->uncore, RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE);
-
-	/* interrupts should cause a wake up from C3 */
-	intel_uncore_write(&dev_priv->uncore, MI_STATE, _MASKED_BIT_ENABLE(MI_AGPBUSY_INT_EN) |
-		   _MASKED_BIT_DISABLE(MI_AGPBUSY_830_MODE));
-
-	intel_uncore_write(&dev_priv->uncore, MEM_MODE,
-		   _MASKED_BIT_ENABLE(MEM_DISPLAY_TRICKLE_FEED_DISABLE));
-
-	/*
-	 * Have FBC ignore 3D activity since we use software
-	 * render tracking, and otherwise a pure 3D workload
-	 * (even if it just renders a single frame and then does
-	 * abosultely nothing) would not allow FBC to recompress
-	 * until a 2D blit occurs.
-	 */
-	intel_uncore_write(&dev_priv->uncore, SCPD0,
-		   _MASKED_BIT_ENABLE(SCPD_FBC_IGNORE_3D));
-}
-
-static void i830_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	intel_uncore_write(&dev_priv->uncore, MEM_MODE,
-		   _MASKED_BIT_ENABLE(MEM_DISPLAY_A_TRICKLE_FEED_DISABLE) |
-		   _MASKED_BIT_ENABLE(MEM_DISPLAY_B_TRICKLE_FEED_DISABLE));
-}
-
-void intel_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	dev_priv->clock_gating_funcs->init_clock_gating(dev_priv);
-}
-
-void intel_suspend_hw(struct drm_i915_private *dev_priv)
-{
-	if (HAS_PCH_LPT(dev_priv))
-		lpt_suspend_hw(dev_priv);
-}
-
-static void nop_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	drm_dbg_kms(&dev_priv->drm,
-		    "No clock gating settings or workarounds applied.\n");
-}
-
-#define CG_FUNCS(platform)						\
-static const struct drm_i915_clock_gating_funcs platform##_clock_gating_funcs = { \
-	.init_clock_gating = platform##_init_clock_gating,		\
-}
-
-CG_FUNCS(pvc);
-CG_FUNCS(dg2);
-CG_FUNCS(xehpsdv);
-CG_FUNCS(adlp);
-CG_FUNCS(dg1);
-CG_FUNCS(gen12lp);
-CG_FUNCS(icl);
-CG_FUNCS(cfl);
-CG_FUNCS(skl);
-CG_FUNCS(kbl);
-CG_FUNCS(bxt);
-CG_FUNCS(glk);
-CG_FUNCS(bdw);
-CG_FUNCS(chv);
-CG_FUNCS(hsw);
-CG_FUNCS(ivb);
-CG_FUNCS(vlv);
-CG_FUNCS(gen6);
-CG_FUNCS(ilk);
-CG_FUNCS(g4x);
-CG_FUNCS(i965gm);
-CG_FUNCS(i965g);
-CG_FUNCS(gen3);
-CG_FUNCS(i85x);
-CG_FUNCS(i830);
-CG_FUNCS(nop);
-#undef CG_FUNCS
-
-/**
- * intel_init_clock_gating_hooks - setup the clock gating hooks
- * @dev_priv: device private
- *
- * Setup the hooks that configure which clocks of a given platform can be
- * gated and also apply various GT and display specific workarounds for these
- * platforms. Note that some GT specific workarounds are applied separately
- * when GPU contexts or batchbuffers start their execution.
- */
-void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv)
-{
-	if (IS_PONTEVECCHIO(dev_priv))
-		dev_priv->clock_gating_funcs = &pvc_clock_gating_funcs;
-	else if (IS_DG2(dev_priv))
-		dev_priv->clock_gating_funcs = &dg2_clock_gating_funcs;
-	else if (IS_XEHPSDV(dev_priv))
-		dev_priv->clock_gating_funcs = &xehpsdv_clock_gating_funcs;
-	else if (IS_ALDERLAKE_P(dev_priv))
-		dev_priv->clock_gating_funcs = &adlp_clock_gating_funcs;
-	else if (IS_DG1(dev_priv))
-		dev_priv->clock_gating_funcs = &dg1_clock_gating_funcs;
-	else if (GRAPHICS_VER(dev_priv) == 12)
-		dev_priv->clock_gating_funcs = &gen12lp_clock_gating_funcs;
-	else if (GRAPHICS_VER(dev_priv) == 11)
-		dev_priv->clock_gating_funcs = &icl_clock_gating_funcs;
-	else if (IS_COFFEELAKE(dev_priv) || IS_COMETLAKE(dev_priv))
-		dev_priv->clock_gating_funcs = &cfl_clock_gating_funcs;
-	else if (IS_SKYLAKE(dev_priv))
-		dev_priv->clock_gating_funcs = &skl_clock_gating_funcs;
-	else if (IS_KABYLAKE(dev_priv))
-		dev_priv->clock_gating_funcs = &kbl_clock_gating_funcs;
-	else if (IS_BROXTON(dev_priv))
-		dev_priv->clock_gating_funcs = &bxt_clock_gating_funcs;
-	else if (IS_GEMINILAKE(dev_priv))
-		dev_priv->clock_gating_funcs = &glk_clock_gating_funcs;
-	else if (IS_BROADWELL(dev_priv))
-		dev_priv->clock_gating_funcs = &bdw_clock_gating_funcs;
-	else if (IS_CHERRYVIEW(dev_priv))
-		dev_priv->clock_gating_funcs = &chv_clock_gating_funcs;
-	else if (IS_HASWELL(dev_priv))
-		dev_priv->clock_gating_funcs = &hsw_clock_gating_funcs;
-	else if (IS_IVYBRIDGE(dev_priv))
-		dev_priv->clock_gating_funcs = &ivb_clock_gating_funcs;
-	else if (IS_VALLEYVIEW(dev_priv))
-		dev_priv->clock_gating_funcs = &vlv_clock_gating_funcs;
-	else if (GRAPHICS_VER(dev_priv) == 6)
-		dev_priv->clock_gating_funcs = &gen6_clock_gating_funcs;
-	else if (GRAPHICS_VER(dev_priv) == 5)
-		dev_priv->clock_gating_funcs = &ilk_clock_gating_funcs;
-	else if (IS_G4X(dev_priv))
-		dev_priv->clock_gating_funcs = &g4x_clock_gating_funcs;
-	else if (IS_I965GM(dev_priv))
-		dev_priv->clock_gating_funcs = &i965gm_clock_gating_funcs;
-	else if (IS_I965G(dev_priv))
-		dev_priv->clock_gating_funcs = &i965g_clock_gating_funcs;
-	else if (GRAPHICS_VER(dev_priv) == 3)
-		dev_priv->clock_gating_funcs = &gen3_clock_gating_funcs;
-	else if (IS_I85X(dev_priv) || IS_I865G(dev_priv))
-		dev_priv->clock_gating_funcs = &i85x_clock_gating_funcs;
-	else if (GRAPHICS_VER(dev_priv) == 2)
-		dev_priv->clock_gating_funcs = &i830_clock_gating_funcs;
-	else {
-		MISSING_CASE(INTEL_DEVID(dev_priv));
-		dev_priv->clock_gating_funcs = &nop_clock_gating_funcs;
-	}
-}
-
-static const struct intel_wm_funcs ilk_wm_funcs = {
-	.compute_pipe_wm = ilk_compute_pipe_wm,
-	.compute_intermediate_wm = ilk_compute_intermediate_wm,
-	.initial_watermarks = ilk_initial_watermarks,
-	.optimize_watermarks = ilk_optimize_watermarks,
-};
-
-static const struct intel_wm_funcs vlv_wm_funcs = {
-	.compute_pipe_wm = vlv_compute_pipe_wm,
-	.compute_intermediate_wm = vlv_compute_intermediate_wm,
-	.initial_watermarks = vlv_initial_watermarks,
-	.optimize_watermarks = vlv_optimize_watermarks,
-	.atomic_update_watermarks = vlv_atomic_update_fifo,
-};
-
-static const struct intel_wm_funcs g4x_wm_funcs = {
-	.compute_pipe_wm = g4x_compute_pipe_wm,
-	.compute_intermediate_wm = g4x_compute_intermediate_wm,
-	.initial_watermarks = g4x_initial_watermarks,
-	.optimize_watermarks = g4x_optimize_watermarks,
-};
-
-static const struct intel_wm_funcs pnv_wm_funcs = {
-	.update_wm = pnv_update_wm,
-};
-
-static const struct intel_wm_funcs i965_wm_funcs = {
-	.update_wm = i965_update_wm,
-};
-
-static const struct intel_wm_funcs i9xx_wm_funcs = {
-	.update_wm = i9xx_update_wm,
-};
-
-static const struct intel_wm_funcs i845_wm_funcs = {
-	.update_wm = i845_update_wm,
-};
-
-static const struct intel_wm_funcs nop_funcs = {
-};
-
-/* Set up chip specific power management-related functions */
-void intel_init_pm(struct drm_i915_private *dev_priv)
-{
-	if (DISPLAY_VER(dev_priv) >= 9) {
-		skl_wm_init(dev_priv);
-		return;
-	}
-
-	/* For cxsr */
-	if (IS_PINEVIEW(dev_priv))
-		pnv_get_mem_freq(dev_priv);
-	else if (GRAPHICS_VER(dev_priv) == 5)
-		ilk_get_mem_freq(dev_priv);
-
-	/* For FIFO watermark updates */
-	if (HAS_PCH_SPLIT(dev_priv)) {
-		ilk_setup_wm_latency(dev_priv);
-
-		if ((DISPLAY_VER(dev_priv) == 5 && dev_priv->display.wm.pri_latency[1] &&
-		     dev_priv->display.wm.spr_latency[1] && dev_priv->display.wm.cur_latency[1]) ||
-		    (DISPLAY_VER(dev_priv) != 5 && dev_priv->display.wm.pri_latency[0] &&
-		     dev_priv->display.wm.spr_latency[0] && dev_priv->display.wm.cur_latency[0])) {
-			dev_priv->display.funcs.wm = &ilk_wm_funcs;
-		} else {
-			drm_dbg_kms(&dev_priv->drm,
-				    "Failed to read display plane latency. "
-				    "Disable CxSR\n");
-			dev_priv->display.funcs.wm = &nop_funcs;
-		}
-	} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
-		vlv_setup_wm_latency(dev_priv);
-		dev_priv->display.funcs.wm = &vlv_wm_funcs;
-	} else if (IS_G4X(dev_priv)) {
-		g4x_setup_wm_latency(dev_priv);
-		dev_priv->display.funcs.wm = &g4x_wm_funcs;
-	} else if (IS_PINEVIEW(dev_priv)) {
-		if (!intel_get_cxsr_latency(!IS_MOBILE(dev_priv),
-					    dev_priv->is_ddr3,
-					    dev_priv->fsb_freq,
-					    dev_priv->mem_freq)) {
-			drm_info(&dev_priv->drm,
-				 "failed to find known CxSR latency "
-				 "(found ddr%s fsb freq %d, mem freq %d), "
-				 "disabling CxSR\n",
-				 (dev_priv->is_ddr3 == 1) ? "3" : "2",
-				 dev_priv->fsb_freq, dev_priv->mem_freq);
-			/* Disable CxSR and never update its watermark again */
-			intel_set_memory_cxsr(dev_priv, false);
-			dev_priv->display.funcs.wm = &nop_funcs;
-		} else
-			dev_priv->display.funcs.wm = &pnv_wm_funcs;
-	} else if (DISPLAY_VER(dev_priv) == 4) {
-		dev_priv->display.funcs.wm = &i965_wm_funcs;
-	} else if (DISPLAY_VER(dev_priv) == 3) {
-		dev_priv->display.funcs.wm = &i9xx_wm_funcs;
-	} else if (DISPLAY_VER(dev_priv) == 2) {
-		if (INTEL_NUM_PIPES(dev_priv) == 1)
-			dev_priv->display.funcs.wm = &i845_wm_funcs;
-		else
-			dev_priv->display.funcs.wm = &i9xx_wm_funcs;
-	} else {
-		drm_err(&dev_priv->drm,
-			"unexpected fall-through in %s\n", __func__);
-		dev_priv->display.funcs.wm = &nop_funcs;
-	}
-}
-
-void intel_pm_setup(struct drm_i915_private *dev_priv)
-{
-	dev_priv->runtime_pm.suspended = false;
-	atomic_set(&dev_priv->runtime_pm.wakeref_count, 0);
-}
