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Commit 317c35d1 authored by Jesse Barnes's avatar Jesse Barnes Committed by Dave Airlie
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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: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 6b79d521

drivers/gpu/drm/i915/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -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

drivers/gpu/drm/i915/i915_drv.c

+2 −460
Original line number Diff line number Diff line
@@ -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);

drivers/gpu/drm/i915/i915_drv.h

+11 −0
Original line number Diff line number Diff line
@@ -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

drivers/gpu/drm/i915/i915_suspend.c

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