separate i915 suspend/resume functions into their own file

[Patch against drm-next.  Consider this a trial balloon for our new Linux
development model.]

This is a big chunk of code.  Separating it out makes it easier to change
without churn on the main i915_drv.c file (and there will be churn as we
fix bugs and add things like kernel mode setting).  Also makes it easier
to share this file with BSD.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

4 files changed, 524 insertions, 461 deletions

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index b032808d9c1..c4bbda662e2 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -3,7 +3,8 @@
 # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
 
 ccflags-y := -Iinclude/drm
-i915-y := i915_drv.o i915_dma.o i915_irq.o i915_mem.o i915_opregion.o
+i915-y := i915_drv.o i915_dma.o i915_irq.o i915_mem.o i915_opregion.o \
+          i915_suspend.o
 
 i915-$(CONFIG_COMPAT)   += i915_ioc32.o
 
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index d95eca2bc45..eff66ed3e58 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -38,211 +38,9 @@ static struct pci_device_id pciidlist[] = {
 	i915_PCI_IDS
 };
 
-enum pipe {
-    PIPE_A = 0,
-    PIPE_B,
-};
-
-static bool i915_pipe_enabled(struct drm_device *dev, enum pipe pipe)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-
-	if (pipe == PIPE_A)
-		return (I915_READ(DPLL_A) & DPLL_VCO_ENABLE);
-	else
-		return (I915_READ(DPLL_B) & DPLL_VCO_ENABLE);
-}
-
-static void i915_save_palette(struct drm_device *dev, enum pipe pipe)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	unsigned long reg = (pipe == PIPE_A ? PALETTE_A : PALETTE_B);
-	u32 *array;
-	int i;
-
-	if (!i915_pipe_enabled(dev, pipe))
-		return;
-
-	if (pipe == PIPE_A)
-		array = dev_priv->save_palette_a;
-	else
-		array = dev_priv->save_palette_b;
-
-	for(i = 0; i < 256; i++)
-		array[i] = I915_READ(reg + (i << 2));
-}
-
-static void i915_restore_palette(struct drm_device *dev, enum pipe pipe)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	unsigned long reg = (pipe == PIPE_A ? PALETTE_A : PALETTE_B);
-	u32 *array;
-	int i;
-
-	if (!i915_pipe_enabled(dev, pipe))
-		return;
-
-	if (pipe == PIPE_A)
-		array = dev_priv->save_palette_a;
-	else
-		array = dev_priv->save_palette_b;
-
-	for(i = 0; i < 256; i++)
-		I915_WRITE(reg + (i << 2), array[i]);
-}
-
-static u8 i915_read_indexed(u16 index_port, u16 data_port, u8 reg)
-{
-	outb(reg, index_port);
-	return inb(data_port);
-}
-
-static u8 i915_read_ar(u16 st01, u8 reg, u16 palette_enable)
-{
-	inb(st01);
-	outb(palette_enable | reg, VGA_AR_INDEX);
-	return inb(VGA_AR_DATA_READ);
-}
-
-static void i915_write_ar(u8 st01, u8 reg, u8 val, u16 palette_enable)
-{
-	inb(st01);
-	outb(palette_enable | reg, VGA_AR_INDEX);
-	outb(val, VGA_AR_DATA_WRITE);
-}
-
-static void i915_write_indexed(u16 index_port, u16 data_port, u8 reg, u8 val)
-{
-	outb(reg, index_port);
-	outb(val, data_port);
-}
-
-static void i915_save_vga(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	int i;
-	u16 cr_index, cr_data, st01;
-
-	/* VGA color palette registers */
-	dev_priv->saveDACMASK = inb(VGA_DACMASK);
-	/* DACCRX automatically increments during read */
-	outb(0, VGA_DACRX);
-	/* Read 3 bytes of color data from each index */
-	for (i = 0; i < 256 * 3; i++)
-		dev_priv->saveDACDATA[i] = inb(VGA_DACDATA);
-
-	/* MSR bits */
-	dev_priv->saveMSR = inb(VGA_MSR_READ);
-	if (dev_priv->saveMSR & VGA_MSR_CGA_MODE) {
-		cr_index = VGA_CR_INDEX_CGA;
-		cr_data = VGA_CR_DATA_CGA;
-		st01 = VGA_ST01_CGA;
-	} else {
-		cr_index = VGA_CR_INDEX_MDA;
-		cr_data = VGA_CR_DATA_MDA;
-		st01 = VGA_ST01_MDA;
-	}
-
-	/* CRT controller regs */
-	i915_write_indexed(cr_index, cr_data, 0x11,
-			   i915_read_indexed(cr_index, cr_data, 0x11) &
-			   (~0x80));
-	for (i = 0; i <= 0x24; i++)
-		dev_priv->saveCR[i] =
-			i915_read_indexed(cr_index, cr_data, i);
-	/* Make sure we don't turn off CR group 0 writes */
-	dev_priv->saveCR[0x11] &= ~0x80;
-
-	/* Attribute controller registers */
-	inb(st01);
-	dev_priv->saveAR_INDEX = inb(VGA_AR_INDEX);
-	for (i = 0; i <= 0x14; i++)
-		dev_priv->saveAR[i] = i915_read_ar(st01, i, 0);
-	inb(st01);
-	outb(dev_priv->saveAR_INDEX, VGA_AR_INDEX);
-	inb(st01);
-
-	/* Graphics controller registers */
-	for (i = 0; i < 9; i++)
-		dev_priv->saveGR[i] =
-			i915_read_indexed(VGA_GR_INDEX, VGA_GR_DATA, i);
-
-	dev_priv->saveGR[0x10] =
-		i915_read_indexed(VGA_GR_INDEX, VGA_GR_DATA, 0x10);
-	dev_priv->saveGR[0x11] =
-		i915_read_indexed(VGA_GR_INDEX, VGA_GR_DATA, 0x11);
-	dev_priv->saveGR[0x18] =
-		i915_read_indexed(VGA_GR_INDEX, VGA_GR_DATA, 0x18);
-
-	/* Sequencer registers */
-	for (i = 0; i < 8; i++)
-		dev_priv->saveSR[i] =
-			i915_read_indexed(VGA_SR_INDEX, VGA_SR_DATA, i);
-}
-
-static void i915_restore_vga(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	int i;
-	u16 cr_index, cr_data, st01;
-
-	/* MSR bits */
-	outb(dev_priv->saveMSR, VGA_MSR_WRITE);
-	if (dev_priv->saveMSR & VGA_MSR_CGA_MODE) {
-		cr_index = VGA_CR_INDEX_CGA;
-		cr_data = VGA_CR_DATA_CGA;
-		st01 = VGA_ST01_CGA;
-	} else {
-		cr_index = VGA_CR_INDEX_MDA;
-		cr_data = VGA_CR_DATA_MDA;
-		st01 = VGA_ST01_MDA;
-	}
-
-	/* Sequencer registers, don't write SR07 */
-	for (i = 0; i < 7; i++)
-		i915_write_indexed(VGA_SR_INDEX, VGA_SR_DATA, i,
-				   dev_priv->saveSR[i]);
-
-	/* CRT controller regs */
-	/* Enable CR group 0 writes */
-	i915_write_indexed(cr_index, cr_data, 0x11, dev_priv->saveCR[0x11]);
-	for (i = 0; i <= 0x24; i++)
-		i915_write_indexed(cr_index, cr_data, i, dev_priv->saveCR[i]);
-
-	/* Graphics controller regs */
-	for (i = 0; i < 9; i++)
-		i915_write_indexed(VGA_GR_INDEX, VGA_GR_DATA, i,
-				   dev_priv->saveGR[i]);
-
-	i915_write_indexed(VGA_GR_INDEX, VGA_GR_DATA, 0x10,
-			   dev_priv->saveGR[0x10]);
-	i915_write_indexed(VGA_GR_INDEX, VGA_GR_DATA, 0x11,
-			   dev_priv->saveGR[0x11]);
-	i915_write_indexed(VGA_GR_INDEX, VGA_GR_DATA, 0x18,
-			   dev_priv->saveGR[0x18]);
-
-	/* Attribute controller registers */
-	inb(st01);
-	for (i = 0; i <= 0x14; i++)
-		i915_write_ar(st01, i, dev_priv->saveAR[i], 0);
-	inb(st01); /* switch back to index mode */
-	outb(dev_priv->saveAR_INDEX | 0x20, VGA_AR_INDEX);
-	inb(st01);
-
-	/* VGA color palette registers */
-	outb(dev_priv->saveDACMASK, VGA_DACMASK);
-	/* DACCRX automatically increments during read */
-	outb(0, VGA_DACWX);
-	/* Read 3 bytes of color data from each index */
-	for (i = 0; i < 256 * 3; i++)
-		outb(dev_priv->saveDACDATA[i], VGA_DACDATA);
-
-}
-
 static int i915_suspend(struct drm_device *dev, pm_message_t state)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
-	int i;
 
 	if (!dev || !dev_priv) {
 		printk(KERN_ERR "dev: %p, dev_priv: %p\n", dev, dev_priv);
@@ -254,122 +52,8 @@ static int i915_suspend(struct drm_device *dev, pm_message_t state)
 		return 0;
 
 	pci_save_state(dev->pdev);
-	pci_read_config_byte(dev->pdev, LBB, &dev_priv->saveLBB);
-
-	/* Display arbitration control */
-	dev_priv->saveDSPARB = I915_READ(DSPARB);
-
-	/* Pipe & plane A info */
-	dev_priv->savePIPEACONF = I915_READ(PIPEACONF);
-	dev_priv->savePIPEASRC = I915_READ(PIPEASRC);
-	dev_priv->saveFPA0 = I915_READ(FPA0);
-	dev_priv->saveFPA1 = I915_READ(FPA1);
-	dev_priv->saveDPLL_A = I915_READ(DPLL_A);
-	if (IS_I965G(dev))
-		dev_priv->saveDPLL_A_MD = I915_READ(DPLL_A_MD);
-	dev_priv->saveHTOTAL_A = I915_READ(HTOTAL_A);
-	dev_priv->saveHBLANK_A = I915_READ(HBLANK_A);
-	dev_priv->saveHSYNC_A = I915_READ(HSYNC_A);
-	dev_priv->saveVTOTAL_A = I915_READ(VTOTAL_A);
-	dev_priv->saveVBLANK_A = I915_READ(VBLANK_A);
-	dev_priv->saveVSYNC_A = I915_READ(VSYNC_A);
-	dev_priv->saveBCLRPAT_A = I915_READ(BCLRPAT_A);
-
-	dev_priv->saveDSPACNTR = I915_READ(DSPACNTR);
-	dev_priv->saveDSPASTRIDE = I915_READ(DSPASTRIDE);
-	dev_priv->saveDSPASIZE = I915_READ(DSPASIZE);
-	dev_priv->saveDSPAPOS = I915_READ(DSPAPOS);
-	dev_priv->saveDSPAADDR = I915_READ(DSPAADDR);
-	if (IS_I965G(dev)) {
-		dev_priv->saveDSPASURF = I915_READ(DSPASURF);
-		dev_priv->saveDSPATILEOFF = I915_READ(DSPATILEOFF);
-	}
-	i915_save_palette(dev, PIPE_A);
-	dev_priv->savePIPEASTAT = I915_READ(PIPEASTAT);
-
-	/* Pipe & plane B info */
-	dev_priv->savePIPEBCONF = I915_READ(PIPEBCONF);
-	dev_priv->savePIPEBSRC = I915_READ(PIPEBSRC);
-	dev_priv->saveFPB0 = I915_READ(FPB0);
-	dev_priv->saveFPB1 = I915_READ(FPB1);
-	dev_priv->saveDPLL_B = I915_READ(DPLL_B);
-	if (IS_I965G(dev))
-		dev_priv->saveDPLL_B_MD = I915_READ(DPLL_B_MD);
-	dev_priv->saveHTOTAL_B = I915_READ(HTOTAL_B);
-	dev_priv->saveHBLANK_B = I915_READ(HBLANK_B);
-	dev_priv->saveHSYNC_B = I915_READ(HSYNC_B);
-	dev_priv->saveVTOTAL_B = I915_READ(VTOTAL_B);
-	dev_priv->saveVBLANK_B = I915_READ(VBLANK_B);
-	dev_priv->saveVSYNC_B = I915_READ(VSYNC_B);
-	dev_priv->saveBCLRPAT_A = I915_READ(BCLRPAT_A);
-
-	dev_priv->saveDSPBCNTR = I915_READ(DSPBCNTR);
-	dev_priv->saveDSPBSTRIDE = I915_READ(DSPBSTRIDE);
-	dev_priv->saveDSPBSIZE = I915_READ(DSPBSIZE);
-	dev_priv->saveDSPBPOS = I915_READ(DSPBPOS);
-	dev_priv->saveDSPBADDR = I915_READ(DSPBADDR);
-	if (IS_I965GM(dev) || IS_IGD_GM(dev)) {
-		dev_priv->saveDSPBSURF = I915_READ(DSPBSURF);
-		dev_priv->saveDSPBTILEOFF = I915_READ(DSPBTILEOFF);
-	}
-	i915_save_palette(dev, PIPE_B);
-	dev_priv->savePIPEBSTAT = I915_READ(PIPEBSTAT);
-
-	/* CRT state */
-	dev_priv->saveADPA = I915_READ(ADPA);
 
-	/* LVDS state */
-	dev_priv->savePP_CONTROL = I915_READ(PP_CONTROL);
-	dev_priv->savePFIT_PGM_RATIOS = I915_READ(PFIT_PGM_RATIOS);
-	dev_priv->saveBLC_PWM_CTL = I915_READ(BLC_PWM_CTL);
-	if (IS_I965G(dev))
-		dev_priv->saveBLC_PWM_CTL2 = I915_READ(BLC_PWM_CTL2);
-	if (IS_MOBILE(dev) && !IS_I830(dev))
-		dev_priv->saveLVDS = I915_READ(LVDS);
-	if (!IS_I830(dev) && !IS_845G(dev))
-		dev_priv->savePFIT_CONTROL = I915_READ(PFIT_CONTROL);
-	dev_priv->savePP_ON_DELAYS = I915_READ(PP_ON_DELAYS);
-	dev_priv->savePP_OFF_DELAYS = I915_READ(PP_OFF_DELAYS);
-	dev_priv->savePP_DIVISOR = I915_READ(PP_DIVISOR);
-
-	/* FIXME: save TV & SDVO state */
-
-	/* FBC state */
-	dev_priv->saveFBC_CFB_BASE = I915_READ(FBC_CFB_BASE);
-	dev_priv->saveFBC_LL_BASE = I915_READ(FBC_LL_BASE);
-	dev_priv->saveFBC_CONTROL2 = I915_READ(FBC_CONTROL2);
-	dev_priv->saveFBC_CONTROL = I915_READ(FBC_CONTROL);
-
-	/* Interrupt state */
-	dev_priv->saveIIR = I915_READ(IIR);
-	dev_priv->saveIER = I915_READ(IER);
-	dev_priv->saveIMR = I915_READ(IMR);
-
-	/* VGA state */
-	dev_priv->saveVGA0 = I915_READ(VGA0);
-	dev_priv->saveVGA1 = I915_READ(VGA1);
-	dev_priv->saveVGA_PD = I915_READ(VGA_PD);
-	dev_priv->saveVGACNTRL = I915_READ(VGACNTRL);
-
-	/* Clock gating state */
-	dev_priv->saveD_STATE = I915_READ(D_STATE);
-	dev_priv->saveCG_2D_DIS = I915_READ(CG_2D_DIS);
-
-	/* Cache mode state */
-	dev_priv->saveCACHE_MODE_0 = I915_READ(CACHE_MODE_0);
-
-	/* Memory Arbitration state */
-	dev_priv->saveMI_ARB_STATE = I915_READ(MI_ARB_STATE);
-
-	/* Scratch space */
-	for (i = 0; i < 16; i++) {
-		dev_priv->saveSWF0[i] = I915_READ(SWF00 + (i << 2));
-		dev_priv->saveSWF1[i] = I915_READ(SWF10 + (i << 2));
-	}
-	for (i = 0; i < 3; i++)
-		dev_priv->saveSWF2[i] = I915_READ(SWF30 + (i << 2));
-
-	i915_save_vga(dev);
+	i915_save_state(dev);
 
 	intel_opregion_free(dev);
 
@@ -384,155 +68,13 @@ static int i915_suspend(struct drm_device *dev, pm_message_t state)
 
 static int i915_resume(struct drm_device *dev)
 {
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	int i;
-
 	pci_set_power_state(dev->pdev, PCI_D0);
 	pci_restore_state(dev->pdev);
 	if (pci_enable_device(dev->pdev))
 		return -1;
 	pci_set_master(dev->pdev);
 
-	pci_write_config_byte(dev->pdev, LBB, dev_priv->saveLBB);
-
-	I915_WRITE(DSPARB, dev_priv->saveDSPARB);
-
-	/* Pipe & plane A info */
-	/* Prime the clock */
-	if (dev_priv->saveDPLL_A & DPLL_VCO_ENABLE) {
-		I915_WRITE(DPLL_A, dev_priv->saveDPLL_A &
-			   ~DPLL_VCO_ENABLE);
-		udelay(150);
-	}
-	I915_WRITE(FPA0, dev_priv->saveFPA0);
-	I915_WRITE(FPA1, dev_priv->saveFPA1);
-	/* Actually enable it */
-	I915_WRITE(DPLL_A, dev_priv->saveDPLL_A);
-	udelay(150);
-	if (IS_I965G(dev))
-		I915_WRITE(DPLL_A_MD, dev_priv->saveDPLL_A_MD);
-	udelay(150);
-
-	/* Restore mode */
-	I915_WRITE(HTOTAL_A, dev_priv->saveHTOTAL_A);
-	I915_WRITE(HBLANK_A, dev_priv->saveHBLANK_A);
-	I915_WRITE(HSYNC_A, dev_priv->saveHSYNC_A);
-	I915_WRITE(VTOTAL_A, dev_priv->saveVTOTAL_A);
-	I915_WRITE(VBLANK_A, dev_priv->saveVBLANK_A);
-	I915_WRITE(VSYNC_A, dev_priv->saveVSYNC_A);
-	I915_WRITE(BCLRPAT_A, dev_priv->saveBCLRPAT_A);
-
-	/* Restore plane info */
-	I915_WRITE(DSPASIZE, dev_priv->saveDSPASIZE);
-	I915_WRITE(DSPAPOS, dev_priv->saveDSPAPOS);
-	I915_WRITE(PIPEASRC, dev_priv->savePIPEASRC);
-	I915_WRITE(DSPAADDR, dev_priv->saveDSPAADDR);
-	I915_WRITE(DSPASTRIDE, dev_priv->saveDSPASTRIDE);
-	if (IS_I965G(dev)) {
-		I915_WRITE(DSPASURF, dev_priv->saveDSPASURF);
-		I915_WRITE(DSPATILEOFF, dev_priv->saveDSPATILEOFF);
-	}
-
-	I915_WRITE(PIPEACONF, dev_priv->savePIPEACONF);
-
-	i915_restore_palette(dev, PIPE_A);
-	/* Enable the plane */
-	I915_WRITE(DSPACNTR, dev_priv->saveDSPACNTR);
-	I915_WRITE(DSPAADDR, I915_READ(DSPAADDR));
-
-	/* Pipe & plane B info */
-	if (dev_priv->saveDPLL_B & DPLL_VCO_ENABLE) {
-		I915_WRITE(DPLL_B, dev_priv->saveDPLL_B &
-			   ~DPLL_VCO_ENABLE);
-		udelay(150);
-	}
-	I915_WRITE(FPB0, dev_priv->saveFPB0);
-	I915_WRITE(FPB1, dev_priv->saveFPB1);
-	/* Actually enable it */
-	I915_WRITE(DPLL_B, dev_priv->saveDPLL_B);
-	udelay(150);
-	if (IS_I965G(dev))
-		I915_WRITE(DPLL_B_MD, dev_priv->saveDPLL_B_MD);
-	udelay(150);
-
-	/* Restore mode */
-	I915_WRITE(HTOTAL_B, dev_priv->saveHTOTAL_B);
-	I915_WRITE(HBLANK_B, dev_priv->saveHBLANK_B);
-	I915_WRITE(HSYNC_B, dev_priv->saveHSYNC_B);
-	I915_WRITE(VTOTAL_B, dev_priv->saveVTOTAL_B);
-	I915_WRITE(VBLANK_B, dev_priv->saveVBLANK_B);
-	I915_WRITE(VSYNC_B, dev_priv->saveVSYNC_B);
-	I915_WRITE(BCLRPAT_B, dev_priv->saveBCLRPAT_B);
-
-	/* Restore plane info */
-	I915_WRITE(DSPBSIZE, dev_priv->saveDSPBSIZE);
-	I915_WRITE(DSPBPOS, dev_priv->saveDSPBPOS);
-	I915_WRITE(PIPEBSRC, dev_priv->savePIPEBSRC);
-	I915_WRITE(DSPBADDR, dev_priv->saveDSPBADDR);
-	I915_WRITE(DSPBSTRIDE, dev_priv->saveDSPBSTRIDE);
-	if (IS_I965G(dev)) {
-		I915_WRITE(DSPBSURF, dev_priv->saveDSPBSURF);
-		I915_WRITE(DSPBTILEOFF, dev_priv->saveDSPBTILEOFF);
-	}
-
-	I915_WRITE(PIPEBCONF, dev_priv->savePIPEBCONF);
-
-	i915_restore_palette(dev, PIPE_B);
-	/* Enable the plane */
-	I915_WRITE(DSPBCNTR, dev_priv->saveDSPBCNTR);
-	I915_WRITE(DSPBADDR, I915_READ(DSPBADDR));
-
-	/* CRT state */
-	I915_WRITE(ADPA, dev_priv->saveADPA);
-
-	/* LVDS state */
-	if (IS_I965G(dev))
-		I915_WRITE(BLC_PWM_CTL2, dev_priv->saveBLC_PWM_CTL2);
-	if (IS_MOBILE(dev) && !IS_I830(dev))
-		I915_WRITE(LVDS, dev_priv->saveLVDS);
-	if (!IS_I830(dev) && !IS_845G(dev))
-		I915_WRITE(PFIT_CONTROL, dev_priv->savePFIT_CONTROL);
-
-	I915_WRITE(PFIT_PGM_RATIOS, dev_priv->savePFIT_PGM_RATIOS);
-	I915_WRITE(BLC_PWM_CTL, dev_priv->saveBLC_PWM_CTL);
-	I915_WRITE(PP_ON_DELAYS, dev_priv->savePP_ON_DELAYS);
-	I915_WRITE(PP_OFF_DELAYS, dev_priv->savePP_OFF_DELAYS);
-	I915_WRITE(PP_DIVISOR, dev_priv->savePP_DIVISOR);
-	I915_WRITE(PP_CONTROL, dev_priv->savePP_CONTROL);
-
-	/* FIXME: restore TV & SDVO state */
-
-	/* FBC info */
-	I915_WRITE(FBC_CFB_BASE, dev_priv->saveFBC_CFB_BASE);
-	I915_WRITE(FBC_LL_BASE, dev_priv->saveFBC_LL_BASE);
-	I915_WRITE(FBC_CONTROL2, dev_priv->saveFBC_CONTROL2);
-	I915_WRITE(FBC_CONTROL, dev_priv->saveFBC_CONTROL);
-
-	/* VGA state */
-	I915_WRITE(VGACNTRL, dev_priv->saveVGACNTRL);
-	I915_WRITE(VGA0, dev_priv->saveVGA0);
-	I915_WRITE(VGA1, dev_priv->saveVGA1);
-	I915_WRITE(VGA_PD, dev_priv->saveVGA_PD);
-	udelay(150);
-
-	/* Clock gating state */
-	I915_WRITE (D_STATE, dev_priv->saveD_STATE);
-	I915_WRITE(CG_2D_DIS, dev_priv->saveCG_2D_DIS);
-
-	/* Cache mode state */
-	I915_WRITE (CACHE_MODE_0, dev_priv->saveCACHE_MODE_0 | 0xffff0000);
-
-	/* Memory arbitration state */
-	I915_WRITE (MI_ARB_STATE, dev_priv->saveMI_ARB_STATE | 0xffff0000);
-
-	for (i = 0; i < 16; i++) {
-		I915_WRITE(SWF00 + (i << 2), dev_priv->saveSWF0[i]);
-		I915_WRITE(SWF10 + (i << 2), dev_priv->saveSWF1[i+7]);
-	}
-	for (i = 0; i < 3; i++)
-		I915_WRITE(SWF30 + (i << 2), dev_priv->saveSWF2[i]);
-
-	i915_restore_vga(dev);
+	i915_restore_state(dev);
 
 	intel_opregion_init(dev);
 
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index e4bd01c511a..a82b487de7b 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -41,6 +41,11 @@
 #define DRIVER_DESC		"Intel Graphics"
 #define DRIVER_DATE		"20060119"
 
+enum pipe {
+	PIPE_A = 0,
+	PIPE_B,
+};
+
 /* Interface history:
  *
  * 1.1: Original.
@@ -269,6 +274,10 @@ extern void i915_mem_takedown(struct mem_block **heap);
 extern void i915_mem_release(struct drm_device * dev,
 			     struct drm_file *file_priv, struct mem_block *heap);
 
+/* i915_suspend.c */
+extern int i915_save_state(struct drm_device *dev);
+extern int i915_restore_state(struct drm_device *dev);
+
 /* i915_opregion.c */
 extern int intel_opregion_init(struct drm_device *dev);
 extern void intel_opregion_free(struct drm_device *dev);
@@ -279,6 +288,8 @@ extern void opregion_enable_asle(struct drm_device *dev);
 #define I915_WRITE(reg,val)     DRM_WRITE32(dev_priv->mmio_map, (reg), (val))
 #define I915_READ16(reg)	DRM_READ16(dev_priv->mmio_map, (reg))
 #define I915_WRITE16(reg,val)	DRM_WRITE16(dev_priv->mmio_map, (reg), (val))
+#define I915_READ8(reg)		DRM_READ8(dev_priv->mmio_map, (reg))
+#define I915_WRITE8(reg,val)	DRM_WRITE8(dev_priv->mmio_map, (reg), (val))
 
 #define I915_VERBOSE 0
 
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
new file mode 100644
index 00000000000..e0c1fe4d1b8
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -0,0 +1,509 @@
+/*
+ *
+ * Copyright 2008 (c) Intel Corporation
+ *   Jesse Barnes <jbarnes@virtuousgeek.org>
+ *
+ * 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, sub license, 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+ */
+
+#include "drmP.h"
+#include "drm.h"
+#include "i915_drm.h"
+#include "i915_drv.h"
+
+static bool i915_pipe_enabled(struct drm_device *dev, enum pipe pipe)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+
+	if (pipe == PIPE_A)
+		return (I915_READ(DPLL_A) & DPLL_VCO_ENABLE);
+	else
+		return (I915_READ(DPLL_B) & DPLL_VCO_ENABLE);
+}
+
+static void i915_save_palette(struct drm_device *dev, enum pipe pipe)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	unsigned long reg = (pipe == PIPE_A ? PALETTE_A : PALETTE_B);
+	u32 *array;
+	int i;
+
+	if (!i915_pipe_enabled(dev, pipe))
+		return;
+
+	if (pipe == PIPE_A)
+		array = dev_priv->save_palette_a;
+	else
+		array = dev_priv->save_palette_b;
+
+	for(i = 0; i < 256; i++)
+		array[i] = I915_READ(reg + (i << 2));
+}
+
+static void i915_restore_palette(struct drm_device *dev, enum pipe pipe)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	unsigned long reg = (pipe == PIPE_A ? PALETTE_A : PALETTE_B);
+	u32 *array;
+	int i;
+
+	if (!i915_pipe_enabled(dev, pipe))
+		return;
+
+	if (pipe == PIPE_A)
+		array = dev_priv->save_palette_a;
+	else
+		array = dev_priv->save_palette_b;
+
+	for(i = 0; i < 256; i++)
+		I915_WRITE(reg + (i << 2), array[i]);
+}
+
+static u8 i915_read_indexed(struct drm_device *dev, u16 index_port, u16 data_port, u8 reg)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+
+	I915_WRITE8(index_port, reg);
+	return I915_READ8(data_port);
+}
+
+static u8 i915_read_ar(struct drm_device *dev, u16 st01, u8 reg, u16 palette_enable)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+
+	I915_READ8(st01);
+	I915_WRITE8(VGA_AR_INDEX, palette_enable | reg);
+	return I915_READ8(VGA_AR_DATA_READ);
+}
+
+static void i915_write_ar(struct drm_device *dev, u16 st01, u8 reg, u8 val, u16 palette_enable)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+
+	I915_READ8(st01);
+	I915_WRITE8(VGA_AR_INDEX, palette_enable | reg);
+	I915_WRITE8(VGA_AR_DATA_WRITE, val);
+}
+
+static void i915_write_indexed(struct drm_device *dev, u16 index_port, u16 data_port, u8 reg, u8 val)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+
+	I915_WRITE8(index_port, reg);
+	I915_WRITE8(data_port, val);
+}
+
+static void i915_save_vga(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int i;
+	u16 cr_index, cr_data, st01;
+
+	/* VGA color palette registers */
+	dev_priv->saveDACMASK = I915_READ8(VGA_DACMASK);
+	/* DACCRX automatically increments during read */
+	I915_WRITE8(VGA_DACRX, 0);
+	/* Read 3 bytes of color data from each index */
+	for (i = 0; i < 256 * 3; i++)
+		dev_priv->saveDACDATA[i] = I915_READ8(VGA_DACDATA);
+
+	/* MSR bits */
+	dev_priv->saveMSR = I915_READ8(VGA_MSR_READ);
+	if (dev_priv->saveMSR & VGA_MSR_CGA_MODE) {
+		cr_index = VGA_CR_INDEX_CGA;
+		cr_data = VGA_CR_DATA_CGA;
+		st01 = VGA_ST01_CGA;
+	} else {
+		cr_index = VGA_CR_INDEX_MDA;
+		cr_data = VGA_CR_DATA_MDA;
+		st01 = VGA_ST01_MDA;
+	}
+
+	/* CRT controller regs */
+	i915_write_indexed(dev, cr_index, cr_data, 0x11,
+			   i915_read_indexed(dev, cr_index, cr_data, 0x11) &
+			   (~0x80));
+	for (i = 0; i <= 0x24; i++)
+		dev_priv->saveCR[i] =
+			i915_read_indexed(dev, cr_index, cr_data, i);
+	/* Make sure we don't turn off CR group 0 writes */
+	dev_priv->saveCR[0x11] &= ~0x80;
+
+	/* Attribute controller registers */
+	I915_READ8(st01);
+	dev_priv->saveAR_INDEX = I915_READ8(VGA_AR_INDEX);
+	for (i = 0; i <= 0x14; i++)
+		dev_priv->saveAR[i] = i915_read_ar(dev, st01, i, 0);
+	I915_READ8(st01);
+	I915_WRITE8(VGA_AR_INDEX, dev_priv->saveAR_INDEX);
+	I915_READ8(st01);
+
+	/* Graphics controller registers */
+	for (i = 0; i < 9; i++)
+		dev_priv->saveGR[i] =
+			i915_read_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, i);
+
+	dev_priv->saveGR[0x10] =
+		i915_read_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x10);
+	dev_priv->saveGR[0x11] =
+		i915_read_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x11);
+	dev_priv->saveGR[0x18] =
+		i915_read_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x18);
+
+	/* Sequencer registers */
+	for (i = 0; i < 8; i++)
+		dev_priv->saveSR[i] =
+			i915_read_indexed(dev, VGA_SR_INDEX, VGA_SR_DATA, i);
+}
+
+static void i915_restore_vga(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int i;
+	u16 cr_index, cr_data, st01;
+
+	/* MSR bits */
+	I915_WRITE8(VGA_MSR_WRITE, dev_priv->saveMSR);
+	if (dev_priv->saveMSR & VGA_MSR_CGA_MODE) {
+		cr_index = VGA_CR_INDEX_CGA;
+		cr_data = VGA_CR_DATA_CGA;
+		st01 = VGA_ST01_CGA;
+	} else {
+		cr_index = VGA_CR_INDEX_MDA;
+		cr_data = VGA_CR_DATA_MDA;
+		st01 = VGA_ST01_MDA;
+	}
+
+	/* Sequencer registers, don't write SR07 */
+	for (i = 0; i < 7; i++)
+		i915_write_indexed(dev, VGA_SR_INDEX, VGA_SR_DATA, i,
+				   dev_priv->saveSR[i]);
+
+	/* CRT controller regs */
+	/* Enable CR group 0 writes */
+	i915_write_indexed(dev, cr_index, cr_data, 0x11, dev_priv->saveCR[0x11]);
+	for (i = 0; i <= 0x24; i++)
+		i915_write_indexed(dev, cr_index, cr_data, i, dev_priv->saveCR[i]);
+
+	/* Graphics controller regs */
+	for (i = 0; i < 9; i++)
+		i915_write_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, i,
+				   dev_priv->saveGR[i]);
+
+	i915_write_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x10,
+			   dev_priv->saveGR[0x10]);
+	i915_write_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x11,
+			   dev_priv->saveGR[0x11]);
+	i915_write_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x18,
+			   dev_priv->saveGR[0x18]);
+
+	/* Attribute controller registers */
+	I915_READ8(st01); /* switch back to index mode */
+	for (i = 0; i <= 0x14; i++)
+		i915_write_ar(dev, st01, i, dev_priv->saveAR[i], 0);
+	I915_READ8(st01); /* switch back to index mode */
+	I915_WRITE8(VGA_AR_INDEX, dev_priv->saveAR_INDEX | 0x20);
+	I915_READ8(st01);
+
+	/* VGA color palette registers */
+	I915_WRITE8(VGA_DACMASK, dev_priv->saveDACMASK);
+	/* DACCRX automatically increments during read */
+	I915_WRITE8(VGA_DACWX, 0);
+	/* Read 3 bytes of color data from each index */
+	for (i = 0; i < 256 * 3; i++)
+		I915_WRITE8(VGA_DACDATA, dev_priv->saveDACDATA[i]);
+
+}
+
+int i915_save_state(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int i;
+
+	pci_read_config_byte(dev->pdev, LBB, &dev_priv->saveLBB);
+
+	/* Display arbitration control */
+	dev_priv->saveDSPARB = I915_READ(DSPARB);
+
+	/* Pipe & plane A info */
+	dev_priv->savePIPEACONF = I915_READ(PIPEACONF);
+	dev_priv->savePIPEASRC = I915_READ(PIPEASRC);
+	dev_priv->saveFPA0 = I915_READ(FPA0);
+	dev_priv->saveFPA1 = I915_READ(FPA1);
+	dev_priv->saveDPLL_A = I915_READ(DPLL_A);
+	if (IS_I965G(dev))
+		dev_priv->saveDPLL_A_MD = I915_READ(DPLL_A_MD);
+	dev_priv->saveHTOTAL_A = I915_READ(HTOTAL_A);
+	dev_priv->saveHBLANK_A = I915_READ(HBLANK_A);
+	dev_priv->saveHSYNC_A = I915_READ(HSYNC_A);
+	dev_priv->saveVTOTAL_A = I915_READ(VTOTAL_A);
+	dev_priv->saveVBLANK_A = I915_READ(VBLANK_A);
+	dev_priv->saveVSYNC_A = I915_READ(VSYNC_A);
+	dev_priv->saveBCLRPAT_A = I915_READ(BCLRPAT_A);
+
+	dev_priv->saveDSPACNTR = I915_READ(DSPACNTR);
+	dev_priv->saveDSPASTRIDE = I915_READ(DSPASTRIDE);
+	dev_priv->saveDSPASIZE = I915_READ(DSPASIZE);
+	dev_priv->saveDSPAPOS = I915_READ(DSPAPOS);
+	dev_priv->saveDSPAADDR = I915_READ(DSPAADDR);
+	if (IS_I965G(dev)) {
+		dev_priv->saveDSPASURF = I915_READ(DSPASURF);
+		dev_priv->saveDSPATILEOFF = I915_READ(DSPATILEOFF);
+	}
+	i915_save_palette(dev, PIPE_A);
+	dev_priv->savePIPEASTAT = I915_READ(PIPEASTAT);
+
+	/* Pipe & plane B info */
+	dev_priv->savePIPEBCONF = I915_READ(PIPEBCONF);
+	dev_priv->savePIPEBSRC = I915_READ(PIPEBSRC);
+	dev_priv->saveFPB0 = I915_READ(FPB0);
+	dev_priv->saveFPB1 = I915_READ(FPB1);
+	dev_priv->saveDPLL_B = I915_READ(DPLL_B);
+	if (IS_I965G(dev))
+		dev_priv->saveDPLL_B_MD = I915_READ(DPLL_B_MD);
+	dev_priv->saveHTOTAL_B = I915_READ(HTOTAL_B);
+	dev_priv->saveHBLANK_B = I915_READ(HBLANK_B);
+	dev_priv->saveHSYNC_B = I915_READ(HSYNC_B);
+	dev_priv->saveVTOTAL_B = I915_READ(VTOTAL_B);
+	dev_priv->saveVBLANK_B = I915_READ(VBLANK_B);
+	dev_priv->saveVSYNC_B = I915_READ(VSYNC_B);
+	dev_priv->saveBCLRPAT_A = I915_READ(BCLRPAT_A);
+
+	dev_priv->saveDSPBCNTR = I915_READ(DSPBCNTR);
+	dev_priv->saveDSPBSTRIDE = I915_READ(DSPBSTRIDE);
+	dev_priv->saveDSPBSIZE = I915_READ(DSPBSIZE);
+	dev_priv->saveDSPBPOS = I915_READ(DSPBPOS);
+	dev_priv->saveDSPBADDR = I915_READ(DSPBADDR);
+	if (IS_I965GM(dev) || IS_IGD_GM(dev)) {
+		dev_priv->saveDSPBSURF = I915_READ(DSPBSURF);
+		dev_priv->saveDSPBTILEOFF = I915_READ(DSPBTILEOFF);
+	}
+	i915_save_palette(dev, PIPE_B);
+	dev_priv->savePIPEBSTAT = I915_READ(PIPEBSTAT);
+
+	/* CRT state */
+	dev_priv->saveADPA = I915_READ(ADPA);
+
+	/* LVDS state */
+	dev_priv->savePP_CONTROL = I915_READ(PP_CONTROL);
+	dev_priv->savePFIT_PGM_RATIOS = I915_READ(PFIT_PGM_RATIOS);
+	dev_priv->saveBLC_PWM_CTL = I915_READ(BLC_PWM_CTL);
+	if (IS_I965G(dev))
+		dev_priv->saveBLC_PWM_CTL2 = I915_READ(BLC_PWM_CTL2);
+	if (IS_MOBILE(dev) && !IS_I830(dev))
+		dev_priv->saveLVDS = I915_READ(LVDS);
+	if (!IS_I830(dev) && !IS_845G(dev))
+		dev_priv->savePFIT_CONTROL = I915_READ(PFIT_CONTROL);
+	dev_priv->savePP_ON_DELAYS = I915_READ(PP_ON_DELAYS);
+	dev_priv->savePP_OFF_DELAYS = I915_READ(PP_OFF_DELAYS);
+	dev_priv->savePP_DIVISOR = I915_READ(PP_DIVISOR);
+
+	/* FIXME: save TV & SDVO state */
+
+	/* FBC state */
+	dev_priv->saveFBC_CFB_BASE = I915_READ(FBC_CFB_BASE);
+	dev_priv->saveFBC_LL_BASE = I915_READ(FBC_LL_BASE);
+	dev_priv->saveFBC_CONTROL2 = I915_READ(FBC_CONTROL2);
+	dev_priv->saveFBC_CONTROL = I915_READ(FBC_CONTROL);
+
+	/* Interrupt state */
+	dev_priv->saveIIR = I915_READ(IIR);
+	dev_priv->saveIER = I915_READ(IER);
+	dev_priv->saveIMR = I915_READ(IMR);
+
+	/* VGA state */
+	dev_priv->saveVGA0 = I915_READ(VGA0);
+	dev_priv->saveVGA1 = I915_READ(VGA1);
+	dev_priv->saveVGA_PD = I915_READ(VGA_PD);
+	dev_priv->saveVGACNTRL = I915_READ(VGACNTRL);
+
+	/* Clock gating state */
+	dev_priv->saveD_STATE = I915_READ(D_STATE);
+	dev_priv->saveCG_2D_DIS = I915_READ(CG_2D_DIS);
+
+	/* Cache mode state */
+	dev_priv->saveCACHE_MODE_0 = I915_READ(CACHE_MODE_0);
+
+	/* Memory Arbitration state */
+	dev_priv->saveMI_ARB_STATE = I915_READ(MI_ARB_STATE);
+
+	/* Scratch space */
+	for (i = 0; i < 16; i++) {
+		dev_priv->saveSWF0[i] = I915_READ(SWF00 + (i << 2));
+		dev_priv->saveSWF1[i] = I915_READ(SWF10 + (i << 2));
+	}
+	for (i = 0; i < 3; i++)
+		dev_priv->saveSWF2[i] = I915_READ(SWF30 + (i << 2));
+
+	i915_save_vga(dev);
+
+	return 0;
+}
+
+int i915_restore_state(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int i;
+
+	pci_write_config_byte(dev->pdev, LBB, dev_priv->saveLBB);
+
+	I915_WRITE(DSPARB, dev_priv->saveDSPARB);
+
+	/* Pipe & plane A info */
+	/* Prime the clock */
+	if (dev_priv->saveDPLL_A & DPLL_VCO_ENABLE) {
+		I915_WRITE(DPLL_A, dev_priv->saveDPLL_A &
+			   ~DPLL_VCO_ENABLE);
+		DRM_UDELAY(150);
+	}
+	I915_WRITE(FPA0, dev_priv->saveFPA0);
+	I915_WRITE(FPA1, dev_priv->saveFPA1);
+	/* Actually enable it */
+	I915_WRITE(DPLL_A, dev_priv->saveDPLL_A);
+	DRM_UDELAY(150);
+	if (IS_I965G(dev))
+		I915_WRITE(DPLL_A_MD, dev_priv->saveDPLL_A_MD);
+	DRM_UDELAY(150);
+
+	/* Restore mode */
+	I915_WRITE(HTOTAL_A, dev_priv->saveHTOTAL_A);
+	I915_WRITE(HBLANK_A, dev_priv->saveHBLANK_A);
+	I915_WRITE(HSYNC_A, dev_priv->saveHSYNC_A);
+	I915_WRITE(VTOTAL_A, dev_priv->saveVTOTAL_A);
+	I915_WRITE(VBLANK_A, dev_priv->saveVBLANK_A);
+	I915_WRITE(VSYNC_A, dev_priv->saveVSYNC_A);
+	I915_WRITE(BCLRPAT_A, dev_priv->saveBCLRPAT_A);
+
+	/* Restore plane info */
+	I915_WRITE(DSPASIZE, dev_priv->saveDSPASIZE);
+	I915_WRITE(DSPAPOS, dev_priv->saveDSPAPOS);
+	I915_WRITE(PIPEASRC, dev_priv->savePIPEASRC);
+	I915_WRITE(DSPAADDR, dev_priv->saveDSPAADDR);
+	I915_WRITE(DSPASTRIDE, dev_priv->saveDSPASTRIDE);
+	if (IS_I965G(dev)) {
+		I915_WRITE(DSPASURF, dev_priv->saveDSPASURF);
+		I915_WRITE(DSPATILEOFF, dev_priv->saveDSPATILEOFF);
+	}
+
+	I915_WRITE(PIPEACONF, dev_priv->savePIPEACONF);
+
+	i915_restore_palette(dev, PIPE_A);
+	/* Enable the plane */
+	I915_WRITE(DSPACNTR, dev_priv->saveDSPACNTR);
+	I915_WRITE(DSPAADDR, I915_READ(DSPAADDR));
+
+	/* Pipe & plane B info */
+	if (dev_priv->saveDPLL_B & DPLL_VCO_ENABLE) {
+		I915_WRITE(DPLL_B, dev_priv->saveDPLL_B &
+			   ~DPLL_VCO_ENABLE);
+		DRM_UDELAY(150);
+	}
+	I915_WRITE(FPB0, dev_priv->saveFPB0);
+	I915_WRITE(FPB1, dev_priv->saveFPB1);
+	/* Actually enable it */
+	I915_WRITE(DPLL_B, dev_priv->saveDPLL_B);
+	DRM_UDELAY(150);
+	if (IS_I965G(dev))
+		I915_WRITE(DPLL_B_MD, dev_priv->saveDPLL_B_MD);
+	DRM_UDELAY(150);
+
+	/* Restore mode */
+	I915_WRITE(HTOTAL_B, dev_priv->saveHTOTAL_B);
+	I915_WRITE(HBLANK_B, dev_priv->saveHBLANK_B);
+	I915_WRITE(HSYNC_B, dev_priv->saveHSYNC_B);
+	I915_WRITE(VTOTAL_B, dev_priv->saveVTOTAL_B);
+	I915_WRITE(VBLANK_B, dev_priv->saveVBLANK_B);
+	I915_WRITE(VSYNC_B, dev_priv->saveVSYNC_B);
+	I915_WRITE(BCLRPAT_B, dev_priv->saveBCLRPAT_B);
+
+	/* Restore plane info */
+	I915_WRITE(DSPBSIZE, dev_priv->saveDSPBSIZE);
+	I915_WRITE(DSPBPOS, dev_priv->saveDSPBPOS);
+	I915_WRITE(PIPEBSRC, dev_priv->savePIPEBSRC);
+	I915_WRITE(DSPBADDR, dev_priv->saveDSPBADDR);
+	I915_WRITE(DSPBSTRIDE, dev_priv->saveDSPBSTRIDE);
+	if (IS_I965G(dev)) {
+		I915_WRITE(DSPBSURF, dev_priv->saveDSPBSURF);
+		I915_WRITE(DSPBTILEOFF, dev_priv->saveDSPBTILEOFF);
+	}
+
+	I915_WRITE(PIPEBCONF, dev_priv->savePIPEBCONF);
+
+	i915_restore_palette(dev, PIPE_B);
+	/* Enable the plane */
+	I915_WRITE(DSPBCNTR, dev_priv->saveDSPBCNTR);
+	I915_WRITE(DSPBADDR, I915_READ(DSPBADDR));
+
+	/* CRT state */
+	I915_WRITE(ADPA, dev_priv->saveADPA);
+
+	/* LVDS state */
+	if (IS_I965G(dev))
+		I915_WRITE(BLC_PWM_CTL2, dev_priv->saveBLC_PWM_CTL2);
+	if (IS_MOBILE(dev) && !IS_I830(dev))
+		I915_WRITE(LVDS, dev_priv->saveLVDS);
+	if (!IS_I830(dev) && !IS_845G(dev))
+		I915_WRITE(PFIT_CONTROL, dev_priv->savePFIT_CONTROL);
+
+	I915_WRITE(PFIT_PGM_RATIOS, dev_priv->savePFIT_PGM_RATIOS);
+	I915_WRITE(BLC_PWM_CTL, dev_priv->saveBLC_PWM_CTL);
+	I915_WRITE(PP_ON_DELAYS, dev_priv->savePP_ON_DELAYS);
+	I915_WRITE(PP_OFF_DELAYS, dev_priv->savePP_OFF_DELAYS);
+	I915_WRITE(PP_DIVISOR, dev_priv->savePP_DIVISOR);
+	I915_WRITE(PP_CONTROL, dev_priv->savePP_CONTROL);
+
+	/* FIXME: restore TV & SDVO state */
+
+	/* FBC info */
+	I915_WRITE(FBC_CFB_BASE, dev_priv->saveFBC_CFB_BASE);
+	I915_WRITE(FBC_LL_BASE, dev_priv->saveFBC_LL_BASE);
+	I915_WRITE(FBC_CONTROL2, dev_priv->saveFBC_CONTROL2);
+	I915_WRITE(FBC_CONTROL, dev_priv->saveFBC_CONTROL);
+
+	/* VGA state */
+	I915_WRITE(VGACNTRL, dev_priv->saveVGACNTRL);
+	I915_WRITE(VGA0, dev_priv->saveVGA0);
+	I915_WRITE(VGA1, dev_priv->saveVGA1);
+	I915_WRITE(VGA_PD, dev_priv->saveVGA_PD);
+	DRM_UDELAY(150);
+
+	/* Clock gating state */
+	I915_WRITE (D_STATE, dev_priv->saveD_STATE);
+	I915_WRITE (CG_2D_DIS, dev_priv->saveCG_2D_DIS);
+
+	/* Cache mode state */
+	I915_WRITE (CACHE_MODE_0, dev_priv->saveCACHE_MODE_0 | 0xffff0000);
+
+	/* Memory arbitration state */
+	I915_WRITE (MI_ARB_STATE, dev_priv->saveMI_ARB_STATE | 0xffff0000);
+
+	for (i = 0; i < 16; i++) {
+		I915_WRITE(SWF00 + (i << 2), dev_priv->saveSWF0[i]);
+		I915_WRITE(SWF10 + (i << 2), dev_priv->saveSWF1[i+7]);
+	}
+	for (i = 0; i < 3; i++)
+		I915_WRITE(SWF30 + (i << 2), dev_priv->saveSWF2[i]);
+
+	i915_restore_vga(dev);
+
+	return 0;
+}
+