Commit ab34a7e8 authored by Paulo Zanoni's avatar Paulo Zanoni
Browse files

drm/i915/fbc: replace frequent dev_priv->fbc.x with fbc->x 



We say "dev_priv->fbc.something" way too many times in our code while
we could be saying just "fbc->something" with a previous declaration
of fbc. This has been bothering me for a while but I didn't want to
patch it since I wanted to fix the real problems first. But as I add
more code I keep thinking about it, especially since it makes the code
easier to read and it can make us fit 80 columns easier, so let's just
do the change now.

While at it, also rename from i915_fbc to intel_fbc because the whole
FBC code uses intel_fbc.

v2: Rebase after the work_fn changes.

Reviewed-by: default avatarMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: default avatarPaulo Zanoni <paulo.r.zanoni@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1453406763-10400-1-git-send-email-paulo.r.zanoni@intel.com
parent b183b3f1

drivers/gpu/drm/i915/i915_drv.h

+2 −2
Original line number Diff line number Diff line
@@ -900,7 +900,7 @@ enum fb_op_origin { 
	ORIGIN_DIRTYFB,

};



struct i915_fbc {

struct intel_fbc {

	/* This is always the inner lock when overlapping with struct_mutex and

	 * it's the outer lock when overlapping with stolen_lock. */

	struct mutex lock;
@@ -1781,7 +1781,7 @@ struct drm_i915_private { 
	u32 pipestat_irq_mask[I915_MAX_PIPES];



	struct i915_hotplug hotplug;

	struct i915_fbc fbc;

	struct intel_fbc fbc;

	struct i915_drrs drrs;

	struct intel_opregion opregion;

	struct intel_vbt_data vbt;

drivers/gpu/drm/i915/intel_fbc.c

+130 −107
Original line number Diff line number Diff line
@@ -358,17 +358,18 @@ static void intel_fbc_work_fn(struct work_struct *__work) 
{

	struct drm_i915_private *dev_priv =

		container_of(__work, struct drm_i915_private, fbc.work.work);

	struct intel_fbc_work *work = &dev_priv->fbc.work;

	struct intel_crtc *crtc = dev_priv->fbc.crtc;

	struct intel_fbc *fbc = &dev_priv->fbc;

	struct intel_fbc_work *work = &fbc->work;

	struct intel_crtc *crtc = fbc->crtc;

	struct drm_vblank_crtc *vblank = &dev_priv->dev->vblank[crtc->pipe];



	if (drm_crtc_vblank_get(&crtc->base)) {

		DRM_ERROR("vblank not available for FBC on pipe %c\n",

			  pipe_name(crtc->pipe));



		mutex_lock(&dev_priv->fbc.lock);

		mutex_lock(&fbc->lock);

		work->scheduled = false;

		mutex_unlock(&dev_priv->fbc.lock);

		mutex_unlock(&fbc->lock);

		return;

	}
@@ -390,7 +391,7 @@ retry: 
		drm_crtc_vblank_count(&crtc->base) != work->scheduled_vblank,

		msecs_to_jiffies(50));



	mutex_lock(&dev_priv->fbc.lock);

	mutex_lock(&fbc->lock);



	/* Were we cancelled? */

	if (!work->scheduled)
@@ -398,32 +399,35 @@ retry: 


	/* Were we delayed again while this function was sleeping? */

	if (drm_crtc_vblank_count(&crtc->base) == work->scheduled_vblank) {

		mutex_unlock(&dev_priv->fbc.lock);

		mutex_unlock(&fbc->lock);

		goto retry;

	}



	if (crtc->base.primary->fb == work->fb)

		dev_priv->fbc.activate(dev_priv);

		fbc->activate(dev_priv);



	work->scheduled = false;



out:

	mutex_unlock(&dev_priv->fbc.lock);

	mutex_unlock(&fbc->lock);

	drm_crtc_vblank_put(&crtc->base);

}



static void intel_fbc_cancel_work(struct drm_i915_private *dev_priv)

{

	WARN_ON(!mutex_is_locked(&dev_priv->fbc.lock));

	dev_priv->fbc.work.scheduled = false;

	struct intel_fbc *fbc = &dev_priv->fbc;



	WARN_ON(!mutex_is_locked(&fbc->lock));

	fbc->work.scheduled = false;

}



static void intel_fbc_schedule_activation(struct intel_crtc *crtc)

{

	struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;

	struct intel_fbc_work *work = &dev_priv->fbc.work;

	struct intel_fbc *fbc = &dev_priv->fbc;

	struct intel_fbc_work *work = &fbc->work;



	WARN_ON(!mutex_is_locked(&dev_priv->fbc.lock));

	WARN_ON(!mutex_is_locked(&fbc->lock));



	if (drm_crtc_vblank_get(&crtc->base)) {

		DRM_ERROR("vblank not available for FBC on pipe %c\n",
@@ -445,12 +449,14 @@ static void intel_fbc_schedule_activation(struct intel_crtc *crtc) 


static void __intel_fbc_deactivate(struct drm_i915_private *dev_priv)

{

	WARN_ON(!mutex_is_locked(&dev_priv->fbc.lock));

	struct intel_fbc *fbc = &dev_priv->fbc;



	WARN_ON(!mutex_is_locked(&fbc->lock));



	intel_fbc_cancel_work(dev_priv);



	if (dev_priv->fbc.active)

		dev_priv->fbc.deactivate(dev_priv);

	if (fbc->active)

		fbc->deactivate(dev_priv);

}



/*
@@ -462,23 +468,26 @@ static void __intel_fbc_deactivate(struct drm_i915_private *dev_priv) 
void intel_fbc_deactivate(struct intel_crtc *crtc)

{

	struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;

	struct intel_fbc *fbc = &dev_priv->fbc;



	if (!fbc_supported(dev_priv))

		return;



	mutex_lock(&dev_priv->fbc.lock);

	if (dev_priv->fbc.crtc == crtc)

	mutex_lock(&fbc->lock);

	if (fbc->crtc == crtc)

		__intel_fbc_deactivate(dev_priv);

	mutex_unlock(&dev_priv->fbc.lock);

	mutex_unlock(&fbc->lock);

}



static void set_no_fbc_reason(struct drm_i915_private *dev_priv,

			      const char *reason)

{

	if (dev_priv->fbc.no_fbc_reason == reason)

	struct intel_fbc *fbc = &dev_priv->fbc;



	if (fbc->no_fbc_reason == reason)

		return;



	dev_priv->fbc.no_fbc_reason = reason;

	fbc->no_fbc_reason = reason;

	DRM_DEBUG_KMS("Disabling FBC: %s\n", reason);

}
@@ -568,16 +577,17 @@ again: 
static int intel_fbc_alloc_cfb(struct intel_crtc *crtc)

{

	struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;

	struct intel_fbc *fbc = &dev_priv->fbc;

	struct drm_framebuffer *fb = crtc->base.primary->state->fb;

	struct drm_mm_node *uninitialized_var(compressed_llb);

	int size, fb_cpp, ret;



	WARN_ON(drm_mm_node_allocated(&dev_priv->fbc.compressed_fb));

	WARN_ON(drm_mm_node_allocated(&fbc->compressed_fb));



	size = intel_fbc_calculate_cfb_size(crtc, fb);

	fb_cpp = drm_format_plane_cpp(fb->pixel_format, 0);



	ret = find_compression_threshold(dev_priv, &dev_priv->fbc.compressed_fb,

	ret = find_compression_threshold(dev_priv, &fbc->compressed_fb,

					 size, fb_cpp);

	if (!ret)

		goto err_llb;
@@ -586,12 +596,12 @@ static int intel_fbc_alloc_cfb(struct intel_crtc *crtc) 


	}



	dev_priv->fbc.threshold = ret;

	fbc->threshold = ret;



	if (INTEL_INFO(dev_priv)->gen >= 5)

		I915_WRITE(ILK_DPFC_CB_BASE, dev_priv->fbc.compressed_fb.start);

		I915_WRITE(ILK_DPFC_CB_BASE, fbc->compressed_fb.start);

	else if (IS_GM45(dev_priv)) {

		I915_WRITE(DPFC_CB_BASE, dev_priv->fbc.compressed_fb.start);

		I915_WRITE(DPFC_CB_BASE, fbc->compressed_fb.start);

	} else {

		compressed_llb = kzalloc(sizeof(*compressed_llb), GFP_KERNEL);

		if (!compressed_llb)
@@ -602,23 +612,22 @@ static int intel_fbc_alloc_cfb(struct intel_crtc *crtc) 
		if (ret)

			goto err_fb;



		dev_priv->fbc.compressed_llb = compressed_llb;

		fbc->compressed_llb = compressed_llb;



		I915_WRITE(FBC_CFB_BASE,

			   dev_priv->mm.stolen_base + dev_priv->fbc.compressed_fb.start);

			   dev_priv->mm.stolen_base + fbc->compressed_fb.start);

		I915_WRITE(FBC_LL_BASE,

			   dev_priv->mm.stolen_base + compressed_llb->start);

	}



	DRM_DEBUG_KMS("reserved %llu bytes of contiguous stolen space for FBC, threshold: %d\n",

		      dev_priv->fbc.compressed_fb.size,

		      dev_priv->fbc.threshold);

		      fbc->compressed_fb.size, fbc->threshold);



	return 0;



err_fb:

	kfree(compressed_llb);

	i915_gem_stolen_remove_node(dev_priv, &dev_priv->fbc.compressed_fb);

	i915_gem_stolen_remove_node(dev_priv, &fbc->compressed_fb);

err_llb:

	pr_info_once("drm: not enough stolen space for compressed buffer (need %d more bytes), disabling. Hint: you may be able to increase stolen memory size in the BIOS to avoid this.\n", size);

	return -ENOSPC;
@@ -626,25 +635,27 @@ err_llb: 


static void __intel_fbc_cleanup_cfb(struct drm_i915_private *dev_priv)

{

	if (drm_mm_node_allocated(&dev_priv->fbc.compressed_fb))

		i915_gem_stolen_remove_node(dev_priv,

					    &dev_priv->fbc.compressed_fb);

	struct intel_fbc *fbc = &dev_priv->fbc;



	if (drm_mm_node_allocated(&fbc->compressed_fb))

		i915_gem_stolen_remove_node(dev_priv, &fbc->compressed_fb);



	if (dev_priv->fbc.compressed_llb) {

		i915_gem_stolen_remove_node(dev_priv,

					    dev_priv->fbc.compressed_llb);

		kfree(dev_priv->fbc.compressed_llb);

	if (fbc->compressed_llb) {

		i915_gem_stolen_remove_node(dev_priv, fbc->compressed_llb);

		kfree(fbc->compressed_llb);

	}

}



void intel_fbc_cleanup_cfb(struct drm_i915_private *dev_priv)

{

	struct intel_fbc *fbc = &dev_priv->fbc;



	if (!fbc_supported(dev_priv))

		return;



	mutex_lock(&dev_priv->fbc.lock);

	mutex_lock(&fbc->lock);

	__intel_fbc_cleanup_cfb(dev_priv);

	mutex_unlock(&dev_priv->fbc.lock);

	mutex_unlock(&fbc->lock);

}



static bool stride_is_valid(struct drm_i915_private *dev_priv,
@@ -723,6 +734,7 @@ static bool intel_fbc_hw_tracking_covers_screen(struct intel_crtc *crtc) 
static bool intel_fbc_can_activate(struct intel_crtc *crtc)

{

	struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;

	struct intel_fbc *fbc = &dev_priv->fbc;

	struct drm_plane *primary;

	struct drm_framebuffer *fb;

	struct intel_plane_state *plane_state;
@@ -799,7 +811,7 @@ static bool intel_fbc_can_activate(struct intel_crtc *crtc) 
	 * a lot of tracking just for a specific case. If we conclude it's an

	 * important case, we can implement it later. */

	if (intel_fbc_calculate_cfb_size(crtc, fb) >

	    dev_priv->fbc.compressed_fb.size * dev_priv->fbc.threshold) {

	    fbc->compressed_fb.size * fbc->threshold) {

		set_no_fbc_reason(dev_priv, "CFB requirements changed");

		return false;

	}
@@ -880,31 +892,32 @@ static bool intel_fbc_reg_params_equal(struct intel_fbc_reg_params *params1, 
static void __intel_fbc_update(struct intel_crtc *crtc)

{

	struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;

	struct intel_fbc *fbc = &dev_priv->fbc;

	struct intel_fbc_reg_params old_params;



	WARN_ON(!mutex_is_locked(&dev_priv->fbc.lock));

	WARN_ON(!mutex_is_locked(&fbc->lock));



	if (!multiple_pipes_ok(dev_priv)) {

		set_no_fbc_reason(dev_priv, "more than one pipe active");

		goto out_disable;

	}



	if (!dev_priv->fbc.enabled || dev_priv->fbc.crtc != crtc)

	if (!fbc->enabled || fbc->crtc != crtc)

		return;



	if (!intel_fbc_can_activate(crtc))

		goto out_disable;



	old_params = dev_priv->fbc.params;

	intel_fbc_get_reg_params(crtc, &dev_priv->fbc.params);

	old_params = fbc->params;

	intel_fbc_get_reg_params(crtc, &fbc->params);



	/* If the scanout has not changed, don't modify the FBC settings.

	 * Note that we make the fundamental assumption that the fb->obj

	 * cannot be unpinned (and have its GTT offset and fence revoked)

	 * without first being decoupled from the scanout and FBC disabled.

	 */

	if (dev_priv->fbc.active &&

	    intel_fbc_reg_params_equal(&old_params, &dev_priv->fbc.params))

	if (fbc->active &&

	    intel_fbc_reg_params_equal(&old_params, &fbc->params))

		return;



	if (intel_fbc_is_active(dev_priv)) {
@@ -936,7 +949,7 @@ static void __intel_fbc_update(struct intel_crtc *crtc) 
	}



	intel_fbc_schedule_activation(crtc);

	dev_priv->fbc.no_fbc_reason = "FBC enabled (not necessarily active)";

	fbc->no_fbc_reason = "FBC enabled (not necessarily active)";

	return;



out_disable:
@@ -956,19 +969,21 @@ out_disable: 
void intel_fbc_update(struct intel_crtc *crtc)

{

	struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;

	struct intel_fbc *fbc = &dev_priv->fbc;



	if (!fbc_supported(dev_priv))

		return;



	mutex_lock(&dev_priv->fbc.lock);

	mutex_lock(&fbc->lock);

	__intel_fbc_update(crtc);

	mutex_unlock(&dev_priv->fbc.lock);

	mutex_unlock(&fbc->lock);

}



void intel_fbc_invalidate(struct drm_i915_private *dev_priv,

			  unsigned int frontbuffer_bits,

			  enum fb_op_origin origin)

{

	struct intel_fbc *fbc = &dev_priv->fbc;

	unsigned int fbc_bits;



	if (!fbc_supported(dev_priv))
@@ -977,44 +992,46 @@ void intel_fbc_invalidate(struct drm_i915_private *dev_priv, 
	if (origin == ORIGIN_GTT)

		return;



	mutex_lock(&dev_priv->fbc.lock);

	mutex_lock(&fbc->lock);



	if (dev_priv->fbc.enabled)

		fbc_bits = INTEL_FRONTBUFFER_PRIMARY(dev_priv->fbc.crtc->pipe);

	if (fbc->enabled)

		fbc_bits = INTEL_FRONTBUFFER_PRIMARY(fbc->crtc->pipe);

	else

		fbc_bits = dev_priv->fbc.possible_framebuffer_bits;

		fbc_bits = fbc->possible_framebuffer_bits;



	dev_priv->fbc.busy_bits |= (fbc_bits & frontbuffer_bits);

	fbc->busy_bits |= (fbc_bits & frontbuffer_bits);



	if (dev_priv->fbc.busy_bits)

	if (fbc->busy_bits)

		__intel_fbc_deactivate(dev_priv);



	mutex_unlock(&dev_priv->fbc.lock);

	mutex_unlock(&fbc->lock);

}



void intel_fbc_flush(struct drm_i915_private *dev_priv,

		     unsigned int frontbuffer_bits, enum fb_op_origin origin)

{

	struct intel_fbc *fbc = &dev_priv->fbc;



	if (!fbc_supported(dev_priv))

		return;



	if (origin == ORIGIN_GTT)

		return;



	mutex_lock(&dev_priv->fbc.lock);

	mutex_lock(&fbc->lock);



	dev_priv->fbc.busy_bits &= ~frontbuffer_bits;

	fbc->busy_bits &= ~frontbuffer_bits;



	if (!dev_priv->fbc.busy_bits && dev_priv->fbc.enabled) {

		if (origin != ORIGIN_FLIP && dev_priv->fbc.active) {

	if (!fbc->busy_bits && fbc->enabled) {

		if (origin != ORIGIN_FLIP && fbc->active) {

			intel_fbc_recompress(dev_priv);

		} else {

			__intel_fbc_deactivate(dev_priv);

			__intel_fbc_update(dev_priv->fbc.crtc);

			__intel_fbc_update(fbc->crtc);

		}

	}



	mutex_unlock(&dev_priv->fbc.lock);

	mutex_unlock(&fbc->lock);

}



/**
@@ -1027,19 +1044,20 @@ void intel_fbc_flush(struct drm_i915_private *dev_priv, 
void intel_fbc_enable(struct intel_crtc *crtc)

{

	struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;

	struct intel_fbc *fbc = &dev_priv->fbc;



	if (!fbc_supported(dev_priv))

		return;



	mutex_lock(&dev_priv->fbc.lock);

	mutex_lock(&fbc->lock);



	if (dev_priv->fbc.enabled) {

		WARN_ON(dev_priv->fbc.crtc == crtc);

	if (fbc->enabled) {

		WARN_ON(fbc->crtc == crtc);

		goto out;

	}



	WARN_ON(dev_priv->fbc.active);

	WARN_ON(dev_priv->fbc.crtc != NULL);

	WARN_ON(fbc->active);

	WARN_ON(fbc->crtc != NULL);



	if (!intel_fbc_can_enable(crtc))

		goto out;
@@ -1050,12 +1068,12 @@ void intel_fbc_enable(struct intel_crtc *crtc) 
	}



	DRM_DEBUG_KMS("Enabling FBC on pipe %c\n", pipe_name(crtc->pipe));

	dev_priv->fbc.no_fbc_reason = "FBC enabled but not active yet\n";

	fbc->no_fbc_reason = "FBC enabled but not active yet\n";



	dev_priv->fbc.enabled = true;

	dev_priv->fbc.crtc = crtc;

	fbc->enabled = true;

	fbc->crtc = crtc;

out:

	mutex_unlock(&dev_priv->fbc.lock);

	mutex_unlock(&fbc->lock);

}



/**
@@ -1067,19 +1085,20 @@ out: 
 */

static void __intel_fbc_disable(struct drm_i915_private *dev_priv)

{

	struct intel_crtc *crtc = dev_priv->fbc.crtc;

	struct intel_fbc *fbc = &dev_priv->fbc;

	struct intel_crtc *crtc = fbc->crtc;



	WARN_ON(!mutex_is_locked(&dev_priv->fbc.lock));

	WARN_ON(!dev_priv->fbc.enabled);

	WARN_ON(dev_priv->fbc.active);

	WARN_ON(!mutex_is_locked(&fbc->lock));

	WARN_ON(!fbc->enabled);

	WARN_ON(fbc->active);

	assert_pipe_disabled(dev_priv, crtc->pipe);



	DRM_DEBUG_KMS("Disabling FBC on pipe %c\n", pipe_name(crtc->pipe));



	__intel_fbc_cleanup_cfb(dev_priv);



	dev_priv->fbc.enabled = false;

	dev_priv->fbc.crtc = NULL;

	fbc->enabled = false;

	fbc->crtc = NULL;

}



/**
@@ -1091,17 +1110,18 @@ static void __intel_fbc_disable(struct drm_i915_private *dev_priv) 
void intel_fbc_disable_crtc(struct intel_crtc *crtc)

{

	struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;

	struct intel_fbc *fbc = &dev_priv->fbc;



	if (!fbc_supported(dev_priv))

		return;



	mutex_lock(&dev_priv->fbc.lock);

	if (dev_priv->fbc.crtc == crtc) {

		WARN_ON(!dev_priv->fbc.enabled);

		WARN_ON(dev_priv->fbc.active);

	mutex_lock(&fbc->lock);

	if (fbc->crtc == crtc) {

		WARN_ON(!fbc->enabled);

		WARN_ON(fbc->active);

		__intel_fbc_disable(dev_priv);

	}

	mutex_unlock(&dev_priv->fbc.lock);

	mutex_unlock(&fbc->lock);

}



/**
@@ -1112,13 +1132,15 @@ void intel_fbc_disable_crtc(struct intel_crtc *crtc) 
 */

void intel_fbc_disable(struct drm_i915_private *dev_priv)

{

	struct intel_fbc *fbc = &dev_priv->fbc;



	if (!fbc_supported(dev_priv))

		return;



	mutex_lock(&dev_priv->fbc.lock);

	if (dev_priv->fbc.enabled)

	mutex_lock(&fbc->lock);

	if (fbc->enabled)

		__intel_fbc_disable(dev_priv);

	mutex_unlock(&dev_priv->fbc.lock);

	mutex_unlock(&fbc->lock);

}



/**
@@ -1129,21 +1151,22 @@ void intel_fbc_disable(struct drm_i915_private *dev_priv) 
 */

void intel_fbc_init(struct drm_i915_private *dev_priv)

{

	struct intel_fbc *fbc = &dev_priv->fbc;

	enum pipe pipe;



	INIT_WORK(&dev_priv->fbc.work.work, intel_fbc_work_fn);

	mutex_init(&dev_priv->fbc.lock);

	dev_priv->fbc.enabled = false;

	dev_priv->fbc.active = false;

	dev_priv->fbc.work.scheduled = false;

	INIT_WORK(&fbc->work.work, intel_fbc_work_fn);

	mutex_init(&fbc->lock);

	fbc->enabled = false;

	fbc->active = false;

	fbc->work.scheduled = false;



	if (!HAS_FBC(dev_priv)) {

		dev_priv->fbc.no_fbc_reason = "unsupported by this chipset";

		fbc->no_fbc_reason = "unsupported by this chipset";

		return;

	}



	for_each_pipe(dev_priv, pipe) {

		dev_priv->fbc.possible_framebuffer_bits |=

		fbc->possible_framebuffer_bits |=

				INTEL_FRONTBUFFER_PRIMARY(pipe);



		if (fbc_on_pipe_a_only(dev_priv))
@@ -1151,21 +1174,21 @@ void intel_fbc_init(struct drm_i915_private *dev_priv) 
	}



	if (INTEL_INFO(dev_priv)->gen >= 7) {

		dev_priv->fbc.is_active = ilk_fbc_is_active;

		dev_priv->fbc.activate = gen7_fbc_activate;

		dev_priv->fbc.deactivate = ilk_fbc_deactivate;

		fbc->is_active = ilk_fbc_is_active;

		fbc->activate = gen7_fbc_activate;

		fbc->deactivate = ilk_fbc_deactivate;

	} else if (INTEL_INFO(dev_priv)->gen >= 5) {

		dev_priv->fbc.is_active = ilk_fbc_is_active;

		dev_priv->fbc.activate = ilk_fbc_activate;

		dev_priv->fbc.deactivate = ilk_fbc_deactivate;

		fbc->is_active = ilk_fbc_is_active;

		fbc->activate = ilk_fbc_activate;

		fbc->deactivate = ilk_fbc_deactivate;

	} else if (IS_GM45(dev_priv)) {

		dev_priv->fbc.is_active = g4x_fbc_is_active;

		dev_priv->fbc.activate = g4x_fbc_activate;

		dev_priv->fbc.deactivate = g4x_fbc_deactivate;

		fbc->is_active = g4x_fbc_is_active;

		fbc->activate = g4x_fbc_activate;

		fbc->deactivate = g4x_fbc_deactivate;

	} else {

		dev_priv->fbc.is_active = i8xx_fbc_is_active;

		dev_priv->fbc.activate = i8xx_fbc_activate;

		dev_priv->fbc.deactivate = i8xx_fbc_deactivate;

		fbc->is_active = i8xx_fbc_is_active;

		fbc->activate = i8xx_fbc_activate;

		fbc->deactivate = i8xx_fbc_deactivate;



		/* This value was pulled out of someone's hat */

		I915_WRITE(FBC_CONTROL, 500 << FBC_CTL_INTERVAL_SHIFT);
@@ -1174,6 +1197,6 @@ void intel_fbc_init(struct drm_i915_private *dev_priv) 
	/* We still don't have any sort of hardware state readout for FBC, so

	 * deactivate it in case the BIOS activated it to make sure software

	 * matches the hardware state. */

	if (dev_priv->fbc.is_active(dev_priv))

		dev_priv->fbc.deactivate(dev_priv);

	if (fbc->is_active(dev_priv))

		fbc->deactivate(dev_priv);

}

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