drm/i915: rename intel_fb.c to intel_fbdev.c
authorDaniel Vetter <daniel.vetter@ffwll.ch>
Tue, 8 Oct 2013 15:44:49 +0000 (17:44 +0200)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Fri, 11 Oct 2013 21:37:33 +0000 (23:37 +0200)
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>
drivers/gpu/drm/i915/Makefile
drivers/gpu/drm/i915/i915_dma.c
drivers/gpu/drm/i915/intel_display.c
drivers/gpu/drm/i915/intel_drv.h
drivers/gpu/drm/i915/intel_fb.c [deleted file]
drivers/gpu/drm/i915/intel_fbdev.c [new file with mode: 0644]

index 45e14a8db2f338a8e931032d3f0f2c144da4e5fa..41838eaa799c5afcb7510bae31118099d4d848a3 100644 (file)
@@ -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
 
index 53c958ce3a026ee3844815ca06ac3cd8e4a6d3e3..42cddc11c23c09ad600e1f0ef1a4bfe6fc61cc1a 100644 (file)
@@ -1853,7 +1853,7 @@ void i915_driver_lastclose(struct drm_device * dev)
                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;
        }
index fd38c3762518656784a5fcfb585bf43088d4449e..4a8a2e4a332b9a632050ebd7712fc769c3c06e23 100644 (file)
@@ -10106,14 +10106,14 @@ intel_user_framebuffer_create(struct drm_device *dev,
 }
 
 #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 */
index 0f8402bc42229e41f61bfe55c01febfb33cb21c7..189257df7a0f1535ddf83ae7e9fa0f9c6407abfb 100644 (file)
@@ -713,14 +713,14 @@ bool intel_dsi_init(struct drm_device *dev);
 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_suspend(struct drm_device *dev, int state)
 {
 }
 
-static inline void intel_fb_restore_mode(struct drm_device *dev)
+static inline void intel_fbdev_restore_mode(struct drm_device *dev)
 {
 }
 #endif
diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c
deleted file mode 100644 (file)
index d883b77..0000000
+++ /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);
-}
diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c
new file mode 100644 (file)
index 0000000..acc8395
--- /dev/null
@@ -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);
+}