patches.baytrail/1072-drm-i915-rename-intel_fb.c-to-intel_fbdev.c.patch

From af442c6b82d7bc0c8140691aa42ab43dd5b4abd8 Mon Sep 17 00:00:00 2001
From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Tue, 8 Oct 2013 17:44:49 +0200
Subject: drm/i915: rename intel_fb.c to intel_fbdev.c

This file is all about the legacy fbdev support. If we want to extract
framebuffer functions, we better put those into a separate file.

Also rename functions accordingly, only two have used the intel_fb_
prefix anyway.

Reviewed-by: Chon Ming Lee <chon.ming.lee@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit 0632fef669912a63c99c8ce4c2ca10c6ea04f0df)
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
---
 drivers/gpu/drm/i915/Makefile        |    2 
 drivers/gpu/drm/i915/i915_dma.c      |    2 
 drivers/gpu/drm/i915/intel_display.c |    4 
 drivers/gpu/drm/i915/intel_drv.h     |    8 
 drivers/gpu/drm/i915/intel_fb.c      |  323 -----------------------------------
 drivers/gpu/drm/i915/intel_fbdev.c   |  323 +++++++++++++++++++++++++++++++++++
 6 files changed, 331 insertions(+), 331 deletions(-)
 rename drivers/gpu/drm/i915/{intel_fb.c => intel_fbdev.c} (98%)

--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -53,7 +53,7 @@ i915-$(CONFIG_COMPAT)   += i915_ioc32.o
 
 i915-$(CONFIG_ACPI)	+= intel_acpi.o
 
-i915-$(CONFIG_DRM_I915_FBDEV) += intel_fb.o
+i915-$(CONFIG_DRM_I915_FBDEV) += intel_fbdev.o
 
 obj-$(CONFIG_DRM_I915)  += i915.o
 
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1862,7 +1862,7 @@ void i915_driver_lastclose(struct drm_de
 		return;
 
 	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
-		intel_fb_restore_mode(dev);
+		intel_fbdev_restore_mode(dev);
 		vga_switcheroo_process_delayed_switch();
 		return;
 	}
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -10106,14 +10106,14 @@ intel_user_framebuffer_create(struct drm
 }
 
 #ifndef CONFIG_DRM_I915_FBDEV
-static inline void intel_fb_output_poll_changed(struct drm_device *dev)
+static inline void intel_fbdev_output_poll_changed(struct drm_device *dev)
 {
 }
 #endif
 
 static const struct drm_mode_config_funcs intel_mode_funcs = {
 	.fb_create = intel_user_framebuffer_create,
-	.output_poll_changed = intel_fb_output_poll_changed,
+	.output_poll_changed = intel_fbdev_output_poll_changed,
 };
 
 /* Set up chip specific display functions */
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -713,14 +713,14 @@ bool intel_dsi_init(struct drm_device *d
 void intel_dvo_init(struct drm_device *dev);
 
 
-/* legacy fbdev emulation in intel_fb.c */
+/* legacy fbdev emulation in intel_fbdev.c */
 #ifdef CONFIG_DRM_I915_FBDEV
 extern int intel_fbdev_init(struct drm_device *dev);
 extern void intel_fbdev_initial_config(struct drm_device *dev);
 extern void intel_fbdev_fini(struct drm_device *dev);
 extern void intel_fbdev_set_suspend(struct drm_device *dev, int state);
-extern void intel_fb_output_poll_changed(struct drm_device *dev);
-extern void intel_fb_restore_mode(struct drm_device *dev);
+extern void intel_fbdev_output_poll_changed(struct drm_device *dev);
+extern void intel_fbdev_restore_mode(struct drm_device *dev);
 #else
 static inline int intel_fbdev_init(struct drm_device *dev)
 {
@@ -739,7 +739,7 @@ static inline void intel_fbdev_set_suspe
 {
 }
 
-static inline void intel_fb_restore_mode(struct drm_device *dev)
+static inline void intel_fbdev_restore_mode(struct drm_device *dev)
 {
 }
 #endif
--- a/drivers/gpu/drm/i915/intel_fb.c
+++ /dev/null
@@ -1,323 +0,0 @@
-/*
- * Copyright © 2007 David Airlie
- *
- * 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:
- *     David Airlie
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/tty.h>
-#include <linux/sysrq.h>
-#include <linux/delay.h>
-#include <linux/fb.h>
-#include <linux/init.h>
-#include <linux/vga_switcheroo.h>
-
-#include <drm/drmP.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_fb_helper.h>
-#include "intel_drv.h"
-#include <drm/i915_drm.h>
-#include "i915_drv.h"
-
-static struct fb_ops intelfb_ops = {
-	.owner = THIS_MODULE,
-	.fb_check_var = drm_fb_helper_check_var,
-	.fb_set_par = drm_fb_helper_set_par,
-	.fb_fillrect = cfb_fillrect,
-	.fb_copyarea = cfb_copyarea,
-	.fb_imageblit = cfb_imageblit,
-	.fb_pan_display = drm_fb_helper_pan_display,
-	.fb_blank = drm_fb_helper_blank,
-	.fb_setcmap = drm_fb_helper_setcmap,
-	.fb_debug_enter = drm_fb_helper_debug_enter,
-	.fb_debug_leave = drm_fb_helper_debug_leave,
-};
-
-static int intelfb_create(struct drm_fb_helper *helper,
-			  struct drm_fb_helper_surface_size *sizes)
-{
-	struct intel_fbdev *ifbdev =
-		container_of(helper, struct intel_fbdev, helper);
-	struct drm_device *dev = helper->dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct fb_info *info;
-	struct drm_framebuffer *fb;
-	struct drm_mode_fb_cmd2 mode_cmd = {};
-	struct drm_i915_gem_object *obj;
-	struct device *device = &dev->pdev->dev;
-	int size, ret;
-
-	/* we don't do packed 24bpp */
-	if (sizes->surface_bpp == 24)
-		sizes->surface_bpp = 32;
-
-	mode_cmd.width = sizes->surface_width;
-	mode_cmd.height = sizes->surface_height;
-
-	mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((sizes->surface_bpp + 7) /
-						      8), 64);
-	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
-							  sizes->surface_depth);
-
-	size = mode_cmd.pitches[0] * mode_cmd.height;
-	size = ALIGN(size, PAGE_SIZE);
-	obj = i915_gem_object_create_stolen(dev, size);
-	if (obj == NULL)
-		obj = i915_gem_alloc_object(dev, size);
-	if (!obj) {
-		DRM_ERROR("failed to allocate framebuffer\n");
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	mutex_lock(&dev->struct_mutex);
-
-	/* Flush everything out, we'll be doing GTT only from now on */
-	ret = intel_pin_and_fence_fb_obj(dev, obj, NULL);
-	if (ret) {
-		DRM_ERROR("failed to pin fb: %d\n", ret);
-		goto out_unref;
-	}
-
-	info = framebuffer_alloc(0, device);
-	if (!info) {
-		ret = -ENOMEM;
-		goto out_unpin;
-	}
-
-	info->par = helper;
-
-	ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj);
-	if (ret)
-		goto out_unpin;
-
-	fb = &ifbdev->ifb.base;
-
-	ifbdev->helper.fb = fb;
-	ifbdev->helper.fbdev = info;
-
-	strcpy(info->fix.id, "inteldrmfb");
-
-	info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
-	info->fbops = &intelfb_ops;
-
-	ret = fb_alloc_cmap(&info->cmap, 256, 0);
-	if (ret) {
-		ret = -ENOMEM;
-		goto out_unpin;
-	}
-	/* setup aperture base/size for vesafb takeover */
-	info->apertures = alloc_apertures(1);
-	if (!info->apertures) {
-		ret = -ENOMEM;
-		goto out_unpin;
-	}
-	info->apertures->ranges[0].base = dev->mode_config.fb_base;
-	info->apertures->ranges[0].size = dev_priv->gtt.mappable_end;
-
-	info->fix.smem_start = dev->mode_config.fb_base + i915_gem_obj_ggtt_offset(obj);
-	info->fix.smem_len = size;
-
-	info->screen_base =
-		ioremap_wc(dev_priv->gtt.mappable_base + i915_gem_obj_ggtt_offset(obj),
-			   size);
-	if (!info->screen_base) {
-		ret = -ENOSPC;
-		goto out_unpin;
-	}
-	info->screen_size = size;
-
-	/* This driver doesn't need a VT switch to restore the mode on resume */
-	info->skip_vt_switch = true;
-
-	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
-	drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
-
-	/* If the object is shmemfs backed, it will have given us zeroed pages.
-	 * If the object is stolen however, it will be full of whatever
-	 * garbage was left in there.
-	 */
-	if (ifbdev->ifb.obj->stolen)
-		memset_io(info->screen_base, 0, info->screen_size);
-
-	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
-
-	DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08lx, bo %p\n",
-		      fb->width, fb->height,
-		      i915_gem_obj_ggtt_offset(obj), obj);
-
-
-	mutex_unlock(&dev->struct_mutex);
-	vga_switcheroo_client_fb_set(dev->pdev, info);
-	return 0;
-
-out_unpin:
-	i915_gem_object_unpin(obj);
-out_unref:
-	drm_gem_object_unreference(&obj->base);
-	mutex_unlock(&dev->struct_mutex);
-out:
-	return ret;
-}
-
-/** Sets the color ramps on behalf of RandR */
-static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
-				    u16 blue, int regno)
-{
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-
-	intel_crtc->lut_r[regno] = red >> 8;
-	intel_crtc->lut_g[regno] = green >> 8;
-	intel_crtc->lut_b[regno] = blue >> 8;
-}
-
-static void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
-				    u16 *blue, int regno)
-{
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-
-	*red = intel_crtc->lut_r[regno] << 8;
-	*green = intel_crtc->lut_g[regno] << 8;
-	*blue = intel_crtc->lut_b[regno] << 8;
-}
-
-static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
-	.gamma_set = intel_crtc_fb_gamma_set,
-	.gamma_get = intel_crtc_fb_gamma_get,
-	.fb_probe = intelfb_create,
-};
-
-static void intel_fbdev_destroy(struct drm_device *dev,
-				struct intel_fbdev *ifbdev)
-{
-	if (ifbdev->helper.fbdev) {
-		struct fb_info *info = ifbdev->helper.fbdev;
-
-		unregister_framebuffer(info);
-		iounmap(info->screen_base);
-		if (info->cmap.len)
-			fb_dealloc_cmap(&info->cmap);
-
-		framebuffer_release(info);
-	}
-
-	drm_fb_helper_fini(&ifbdev->helper);
-
-	drm_framebuffer_unregister_private(&ifbdev->ifb.base);
-	intel_framebuffer_fini(&ifbdev->ifb);
-}
-
-int intel_fbdev_init(struct drm_device *dev)
-{
-	struct intel_fbdev *ifbdev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	int ret;
-
-	ifbdev = kzalloc(sizeof(*ifbdev), GFP_KERNEL);
-	if (!ifbdev)
-		return -ENOMEM;
-
-	dev_priv->fbdev = ifbdev;
-	ifbdev->helper.funcs = &intel_fb_helper_funcs;
-
-	ret = drm_fb_helper_init(dev, &ifbdev->helper,
-				 INTEL_INFO(dev)->num_pipes,
-				 4);
-	if (ret) {
-		kfree(ifbdev);
-		return ret;
-	}
-
-	drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
-
-	return 0;
-}
-
-void intel_fbdev_initial_config(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-
-	/* Due to peculiar init order wrt to hpd handling this is separate. */
-	drm_fb_helper_initial_config(&dev_priv->fbdev->helper, 32);
-}
-
-void intel_fbdev_fini(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	if (!dev_priv->fbdev)
-		return;
-
-	intel_fbdev_destroy(dev, dev_priv->fbdev);
-	kfree(dev_priv->fbdev);
-	dev_priv->fbdev = NULL;
-}
-
-void intel_fbdev_set_suspend(struct drm_device *dev, int state)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct intel_fbdev *ifbdev = dev_priv->fbdev;
-	struct fb_info *info;
-
-	if (!ifbdev)
-		return;
-
-	info = ifbdev->helper.fbdev;
-
-	/* On resume from hibernation: If the object is shmemfs backed, it has
-	 * been restored from swap. If the object is stolen however, it will be
-	 * full of whatever garbage was left in there.
-	 */
-	if (state == FBINFO_STATE_RUNNING && ifbdev->ifb.obj->stolen)
-		memset_io(info->screen_base, 0, info->screen_size);
-
-	fb_set_suspend(info, state);
-}
-
-MODULE_LICENSE("GPL and additional rights");
-
-void intel_fb_output_poll_changed(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);
-}
-
-void intel_fb_restore_mode(struct drm_device *dev)
-{
-	int ret;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-
-	if (INTEL_INFO(dev)->num_pipes == 0)
-		return;
-
-	drm_modeset_lock_all(dev);
-
-	ret = drm_fb_helper_restore_fbdev_mode(&dev_priv->fbdev->helper);
-	if (ret)
-		DRM_DEBUG("failed to restore crtc mode\n");
-
-	drm_modeset_unlock_all(dev);
-}
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_fbdev.c
@@ -0,0 +1,323 @@
+/*
+ * Copyright © 2007 David Airlie
+ *
+ * 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:
+ *     David Airlie
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/sysrq.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/vga_switcheroo.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_fb_helper.h>
+#include "intel_drv.h"
+#include <drm/i915_drm.h>
+#include "i915_drv.h"
+
+static struct fb_ops intelfb_ops = {
+	.owner = THIS_MODULE,
+	.fb_check_var = drm_fb_helper_check_var,
+	.fb_set_par = drm_fb_helper_set_par,
+	.fb_fillrect = cfb_fillrect,
+	.fb_copyarea = cfb_copyarea,
+	.fb_imageblit = cfb_imageblit,
+	.fb_pan_display = drm_fb_helper_pan_display,
+	.fb_blank = drm_fb_helper_blank,
+	.fb_setcmap = drm_fb_helper_setcmap,
+	.fb_debug_enter = drm_fb_helper_debug_enter,
+	.fb_debug_leave = drm_fb_helper_debug_leave,
+};
+
+static int intelfb_create(struct drm_fb_helper *helper,
+			  struct drm_fb_helper_surface_size *sizes)
+{
+	struct intel_fbdev *ifbdev =
+		container_of(helper, struct intel_fbdev, helper);
+	struct drm_device *dev = helper->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct fb_info *info;
+	struct drm_framebuffer *fb;
+	struct drm_mode_fb_cmd2 mode_cmd = {};
+	struct drm_i915_gem_object *obj;
+	struct device *device = &dev->pdev->dev;
+	int size, ret;
+
+	/* we don't do packed 24bpp */
+	if (sizes->surface_bpp == 24)
+		sizes->surface_bpp = 32;
+
+	mode_cmd.width = sizes->surface_width;
+	mode_cmd.height = sizes->surface_height;
+
+	mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((sizes->surface_bpp + 7) /
+						      8), 64);
+	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
+							  sizes->surface_depth);
+
+	size = mode_cmd.pitches[0] * mode_cmd.height;
+	size = ALIGN(size, PAGE_SIZE);
+	obj = i915_gem_object_create_stolen(dev, size);
+	if (obj == NULL)
+		obj = i915_gem_alloc_object(dev, size);
+	if (!obj) {
+		DRM_ERROR("failed to allocate framebuffer\n");
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	mutex_lock(&dev->struct_mutex);
+
+	/* Flush everything out, we'll be doing GTT only from now on */
+	ret = intel_pin_and_fence_fb_obj(dev, obj, NULL);
+	if (ret) {
+		DRM_ERROR("failed to pin fb: %d\n", ret);
+		goto out_unref;
+	}
+
+	info = framebuffer_alloc(0, device);
+	if (!info) {
+		ret = -ENOMEM;
+		goto out_unpin;
+	}
+
+	info->par = helper;
+
+	ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj);
+	if (ret)
+		goto out_unpin;
+
+	fb = &ifbdev->ifb.base;
+
+	ifbdev->helper.fb = fb;
+	ifbdev->helper.fbdev = info;
+
+	strcpy(info->fix.id, "inteldrmfb");
+
+	info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
+	info->fbops = &intelfb_ops;
+
+	ret = fb_alloc_cmap(&info->cmap, 256, 0);
+	if (ret) {
+		ret = -ENOMEM;
+		goto out_unpin;
+	}
+	/* setup aperture base/size for vesafb takeover */
+	info->apertures = alloc_apertures(1);
+	if (!info->apertures) {
+		ret = -ENOMEM;
+		goto out_unpin;
+	}
+	info->apertures->ranges[0].base = dev->mode_config.fb_base;
+	info->apertures->ranges[0].size = dev_priv->gtt.mappable_end;
+
+	info->fix.smem_start = dev->mode_config.fb_base + i915_gem_obj_ggtt_offset(obj);
+	info->fix.smem_len = size;
+
+	info->screen_base =
+		ioremap_wc(dev_priv->gtt.mappable_base + i915_gem_obj_ggtt_offset(obj),
+			   size);
+	if (!info->screen_base) {
+		ret = -ENOSPC;
+		goto out_unpin;
+	}
+	info->screen_size = size;
+
+	/* This driver doesn't need a VT switch to restore the mode on resume */
+	info->skip_vt_switch = true;
+
+	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
+	drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
+
+	/* If the object is shmemfs backed, it will have given us zeroed pages.
+	 * If the object is stolen however, it will be full of whatever
+	 * garbage was left in there.
+	 */
+	if (ifbdev->ifb.obj->stolen)
+		memset_io(info->screen_base, 0, info->screen_size);
+
+	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
+
+	DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08lx, bo %p\n",
+		      fb->width, fb->height,
+		      i915_gem_obj_ggtt_offset(obj), obj);
+
+
+	mutex_unlock(&dev->struct_mutex);
+	vga_switcheroo_client_fb_set(dev->pdev, info);
+	return 0;
+
+out_unpin:
+	i915_gem_object_unpin(obj);
+out_unref:
+	drm_gem_object_unreference(&obj->base);
+	mutex_unlock(&dev->struct_mutex);
+out:
+	return ret;
+}
+
+/** Sets the color ramps on behalf of RandR */
+static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
+				    u16 blue, int regno)
+{
+	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+	intel_crtc->lut_r[regno] = red >> 8;
+	intel_crtc->lut_g[regno] = green >> 8;
+	intel_crtc->lut_b[regno] = blue >> 8;
+}
+
+static void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
+				    u16 *blue, int regno)
+{
+	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+	*red = intel_crtc->lut_r[regno] << 8;
+	*green = intel_crtc->lut_g[regno] << 8;
+	*blue = intel_crtc->lut_b[regno] << 8;
+}
+
+static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
+	.gamma_set = intel_crtc_fb_gamma_set,
+	.gamma_get = intel_crtc_fb_gamma_get,
+	.fb_probe = intelfb_create,
+};
+
+static void intel_fbdev_destroy(struct drm_device *dev,
+				struct intel_fbdev *ifbdev)
+{
+	if (ifbdev->helper.fbdev) {
+		struct fb_info *info = ifbdev->helper.fbdev;
+
+		unregister_framebuffer(info);
+		iounmap(info->screen_base);
+		if (info->cmap.len)
+			fb_dealloc_cmap(&info->cmap);
+
+		framebuffer_release(info);
+	}
+
+	drm_fb_helper_fini(&ifbdev->helper);
+
+	drm_framebuffer_unregister_private(&ifbdev->ifb.base);
+	intel_framebuffer_fini(&ifbdev->ifb);
+}
+
+int intel_fbdev_init(struct drm_device *dev)
+{
+	struct intel_fbdev *ifbdev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int ret;
+
+	ifbdev = kzalloc(sizeof(*ifbdev), GFP_KERNEL);
+	if (!ifbdev)
+		return -ENOMEM;
+
+	dev_priv->fbdev = ifbdev;
+	ifbdev->helper.funcs = &intel_fb_helper_funcs;
+
+	ret = drm_fb_helper_init(dev, &ifbdev->helper,
+				 INTEL_INFO(dev)->num_pipes,
+				 4);
+	if (ret) {
+		kfree(ifbdev);
+		return ret;
+	}
+
+	drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
+
+	return 0;
+}
+
+void intel_fbdev_initial_config(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+
+	/* Due to peculiar init order wrt to hpd handling this is separate. */
+	drm_fb_helper_initial_config(&dev_priv->fbdev->helper, 32);
+}
+
+void intel_fbdev_fini(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	if (!dev_priv->fbdev)
+		return;
+
+	intel_fbdev_destroy(dev, dev_priv->fbdev);
+	kfree(dev_priv->fbdev);
+	dev_priv->fbdev = NULL;
+}
+
+void intel_fbdev_set_suspend(struct drm_device *dev, int state)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_fbdev *ifbdev = dev_priv->fbdev;
+	struct fb_info *info;
+
+	if (!ifbdev)
+		return;
+
+	info = ifbdev->helper.fbdev;
+
+	/* On resume from hibernation: If the object is shmemfs backed, it has
+	 * been restored from swap. If the object is stolen however, it will be
+	 * full of whatever garbage was left in there.
+	 */
+	if (state == FBINFO_STATE_RUNNING && ifbdev->ifb.obj->stolen)
+		memset_io(info->screen_base, 0, info->screen_size);
+
+	fb_set_suspend(info, state);
+}
+
+MODULE_LICENSE("GPL and additional rights");
+
+void intel_fbdev_output_poll_changed(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);
+}
+
+void intel_fbdev_restore_mode(struct drm_device *dev)
+{
+	int ret;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+
+	if (INTEL_INFO(dev)->num_pipes == 0)
+		return;
+
+	drm_modeset_lock_all(dev);
+
+	ret = drm_fb_helper_restore_fbdev_mode(&dev_priv->fbdev->helper);
+	if (ret)
+		DRM_DEBUG("failed to restore crtc mode\n");
+
+	drm_modeset_unlock_all(dev);
+}