Merge commit '85082fd7cbe3173198aac0eb5e85ab1edcc6352c' into test-build

Manual fixup of:

	arch/powerpc/Kconfig

8 files changed, 432 insertions, 36 deletions

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index e0c5f96b273..9b887ef64ff 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -7,7 +7,7 @@ menu "Graphics support"
 
 source "drivers/char/agp/Kconfig"
 
-source "drivers/char/drm/Kconfig"
+source "drivers/gpu/drm/Kconfig"
 
 config VGASTATE
        tristate
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index dcd8073c236..30bf7f2f163 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -112,3 +112,10 @@ config BACKLIGHT_CARILLO_RANCH
 	help
 	  If you have a Intel LE80578 (Carillo Ranch) say Y to enable the
 	  backlight driver.
+
+config BACKLIGHT_PWM
+	tristate "Generic PWM based Backlight Driver"
+	depends on BACKLIGHT_CLASS_DEVICE && HAVE_PWM
+	help
+	  If you have a LCD backlight adjustable by PWM, say Y to enable
+	  this driver.
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index 33f6c7cecc7..b51a7cd1250 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -10,3 +10,4 @@ obj-$(CONFIG_BACKLIGHT_LOCOMO)	+= locomolcd.o
 obj-$(CONFIG_BACKLIGHT_OMAP1)	+= omap1_bl.o
 obj-$(CONFIG_BACKLIGHT_PROGEAR) += progear_bl.o
 obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH) += cr_bllcd.o
+obj-$(CONFIG_BACKLIGHT_PWM)	+= pwm_bl.o
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
new file mode 100644
index 00000000000..6338d0e2fe0
--- /dev/null
+++ b/drivers/video/backlight/pwm_bl.c
@@ -0,0 +1,185 @@
+/*
+ * linux/drivers/video/backlight/pwm_bl.c
+ *
+ * simple PWM based backlight control, board code has to setup
+ * 1) pin configuration so PWM waveforms can output
+ * 2) platform_data casts to the PWM id (0/1/2/3 on PXA)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/fb.h>
+#include <linux/backlight.h>
+#include <linux/err.h>
+#include <linux/pwm.h>
+#include <linux/pwm_backlight.h>
+
+struct pwm_bl_data {
+	struct pwm_device	*pwm;
+	unsigned int		period;
+	int			(*notify)(int brightness);
+};
+
+static int pwm_backlight_update_status(struct backlight_device *bl)
+{
+	struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev);
+	int brightness = bl->props.brightness;
+	int max = bl->props.max_brightness;
+
+	if (bl->props.power != FB_BLANK_UNBLANK)
+		brightness = 0;
+
+	if (bl->props.fb_blank != FB_BLANK_UNBLANK)
+		brightness = 0;
+
+	if (pb->notify)
+		brightness = pb->notify(brightness);
+
+	if (brightness == 0) {
+		pwm_config(pb->pwm, 0, pb->period);
+		pwm_disable(pb->pwm);
+	} else {
+		pwm_config(pb->pwm, brightness * pb->period / max, pb->period);
+		pwm_enable(pb->pwm);
+	}
+	return 0;
+}
+
+static int pwm_backlight_get_brightness(struct backlight_device *bl)
+{
+	return bl->props.brightness;
+}
+
+static struct backlight_ops pwm_backlight_ops = {
+	.update_status	= pwm_backlight_update_status,
+	.get_brightness	= pwm_backlight_get_brightness,
+};
+
+static int pwm_backlight_probe(struct platform_device *pdev)
+{
+	struct platform_pwm_backlight_data *data = pdev->dev.platform_data;
+	struct backlight_device *bl;
+	struct pwm_bl_data *pb;
+	int ret;
+
+	if (!data)
+		return -EINVAL;
+
+	if (data->init) {
+		ret = data->init(&pdev->dev);
+		if (ret < 0)
+			return ret;
+	}
+
+	pb = kzalloc(sizeof(*pb), GFP_KERNEL);
+	if (!pb) {
+		ret = -ENOMEM;
+		goto err_alloc;
+	}
+
+	pb->period = data->pwm_period_ns;
+	pb->notify = data->notify;
+
+	pb->pwm = pwm_request(data->pwm_id, "backlight");
+	if (IS_ERR(pb->pwm)) {
+		dev_err(&pdev->dev, "unable to request PWM for backlight\n");
+		ret = PTR_ERR(pb->pwm);
+		goto err_pwm;
+	}
+
+	bl = backlight_device_register(pdev->name, &pdev->dev,
+			pb, &pwm_backlight_ops);
+	if (IS_ERR(bl)) {
+		dev_err(&pdev->dev, "failed to register backlight\n");
+		ret = PTR_ERR(bl);
+		goto err_bl;
+	}
+
+	bl->props.max_brightness = data->max_brightness;
+	bl->props.brightness = data->dft_brightness;
+	backlight_update_status(bl);
+
+	platform_set_drvdata(pdev, bl);
+	return 0;
+
+err_bl:
+	pwm_free(pb->pwm);
+err_pwm:
+	kfree(pb);
+err_alloc:
+	if (data->exit)
+		data->exit(&pdev->dev);
+	return ret;
+}
+
+static int pwm_backlight_remove(struct platform_device *pdev)
+{
+	struct platform_pwm_backlight_data *data = pdev->dev.platform_data;
+	struct backlight_device *bl = platform_get_drvdata(pdev);
+	struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev);
+
+	backlight_device_unregister(bl);
+	pwm_config(pb->pwm, 0, pb->period);
+	pwm_disable(pb->pwm);
+	pwm_free(pb->pwm);
+	kfree(pb);
+	if (data->exit)
+		data->exit(&pdev->dev);
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int pwm_backlight_suspend(struct platform_device *pdev,
+				 pm_message_t state)
+{
+	struct backlight_device *bl = platform_get_drvdata(pdev);
+	struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev);
+
+	pwm_config(pb->pwm, 0, pb->period);
+	pwm_disable(pb->pwm);
+	return 0;
+}
+
+static int pwm_backlight_resume(struct platform_device *pdev)
+{
+	struct backlight_device *bl = platform_get_drvdata(pdev);
+
+	backlight_update_status(bl);
+	return 0;
+}
+#else
+#define pwm_backlight_suspend	NULL
+#define pwm_backlight_resume	NULL
+#endif
+
+static struct platform_driver pwm_backlight_driver = {
+	.driver		= {
+		.name	= "pwm-backlight",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= pwm_backlight_probe,
+	.remove		= pwm_backlight_remove,
+	.suspend	= pwm_backlight_suspend,
+	.resume		= pwm_backlight_resume,
+};
+
+static int __init pwm_backlight_init(void)
+{
+	return platform_driver_register(&pwm_backlight_driver);
+}
+module_init(pwm_backlight_init);
+
+static void __exit pwm_backlight_exit(void)
+{
+	platform_driver_unregister(&pwm_backlight_driver);
+}
+module_exit(pwm_backlight_exit);
+
+MODULE_DESCRIPTION("PWM based Backlight Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index 776f7fcd2fb..33ebdb198da 100644
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -1326,20 +1326,27 @@ fb_open(struct inode *inode, struct file *file)
 
 	if (fbidx >= FB_MAX)
 		return -ENODEV;
+	lock_kernel();
 #ifdef CONFIG_KMOD
 	if (!(info = registered_fb[fbidx]))
 		try_to_load(fbidx);
 #endif /* CONFIG_KMOD */
-	if (!(info = registered_fb[fbidx]))
-		return -ENODEV;
-	if (!try_module_get(info->fbops->owner))
-		return -ENODEV;
+	if (!(info = registered_fb[fbidx])) {
+		res = -ENODEV;
+		goto out;
+	}
+	if (!try_module_get(info->fbops->owner)) {
+		res = -ENODEV;
+		goto out;
+	}
 	file->private_data = info;
 	if (info->fbops->fb_open) {
 		res = info->fbops->fb_open(info,1);
 		if (res)
 			module_put(info->fbops->owner);
 	}
+out:
+	unlock_kernel();
 	return res;
 }
 
diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c
index fafe7db20d6..d0746261c95 100644
--- a/drivers/video/pxafb.c
+++ b/drivers/video/pxafb.c
@@ -1792,11 +1792,49 @@ failed:
 	return ret;
 }
 
+static int __devexit pxafb_remove(struct platform_device *dev)
+{
+	struct pxafb_info *fbi = platform_get_drvdata(dev);
+	struct resource *r;
+	int irq;
+	struct fb_info *info;
+
+	if (!fbi)
+		return 0;
+
+	info = &fbi->fb;
+
+	unregister_framebuffer(info);
+
+	pxafb_disable_controller(fbi);
+
+	if (fbi->fb.cmap.len)
+		fb_dealloc_cmap(&fbi->fb.cmap);
+
+	irq = platform_get_irq(dev, 0);
+	free_irq(irq, fbi);
+
+	dma_free_writecombine(&dev->dev, fbi->map_size,
+					fbi->map_cpu, fbi->map_dma);
+
+	iounmap(fbi->mmio_base);
+
+	r = platform_get_resource(dev, IORESOURCE_MEM, 0);
+	release_mem_region(r->start, r->end - r->start + 1);
+
+	clk_put(fbi->clk);
+	kfree(fbi);
+
+	return 0;
+}
+
 static struct platform_driver pxafb_driver = {
 	.probe		= pxafb_probe,
+	.remove 	= pxafb_remove,
 	.suspend	= pxafb_suspend,
 	.resume		= pxafb_resume,
 	.driver		= {
+		.owner	= THIS_MODULE,
 		.name	= "pxa2xx-fb",
 	},
 };
@@ -1809,7 +1847,13 @@ static int __init pxafb_init(void)
 	return platform_driver_register(&pxafb_driver);
 }
 
+static void __exit pxafb_exit(void)
+{
+	platform_driver_unregister(&pxafb_driver);
+}
+
 module_init(pxafb_init);
+module_exit(pxafb_exit);
 
 MODULE_DESCRIPTION("loadable framebuffer driver for PXA");
 MODULE_LICENSE("GPL");
diff --git a/drivers/video/sgivwfb.c b/drivers/video/sgivwfb.c
index 4fb16240c04..f5252c2552f 100644
--- a/drivers/video/sgivwfb.c
+++ b/drivers/video/sgivwfb.c
@@ -21,8 +21,7 @@
 
 #include <asm/io.h>
 #include <asm/mtrr.h>
-
-#include <setup_arch.h>
+#include <asm/visws/sgivw.h>
 
 #define INCLUDE_TIMING_TABLE_DATA
 #define DBE_REG_BASE par->regs
diff --git a/drivers/video/xen-fbfront.c b/drivers/video/xen-fbfront.c
index 619a6f8d65a..47ed39b52f9 100644
--- a/drivers/video/xen-fbfront.c
+++ b/drivers/video/xen-fbfront.c
@@ -18,6 +18,7 @@
  * frame buffer.
  */
 
+#include <linux/console.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/fb.h>
@@ -42,37 +43,68 @@ struct xenfb_info {
 	struct xenfb_page	*page;
 	unsigned long 		*mfns;
 	int			update_wanted; /* XENFB_TYPE_UPDATE wanted */
+	int			feature_resize; /* XENFB_TYPE_RESIZE ok */
+	struct xenfb_resize	resize;		/* protected by resize_lock */
+	int			resize_dpy;	/* ditto */
+	spinlock_t		resize_lock;
 
 	struct xenbus_device	*xbdev;
 };
 
-static u32 xenfb_mem_len = XENFB_WIDTH * XENFB_HEIGHT * XENFB_DEPTH / 8;
+#define XENFB_DEFAULT_FB_LEN (XENFB_WIDTH * XENFB_HEIGHT * XENFB_DEPTH / 8)
 
+enum { KPARAM_MEM, KPARAM_WIDTH, KPARAM_HEIGHT, KPARAM_CNT };
+static int video[KPARAM_CNT] = { 2, XENFB_WIDTH, XENFB_HEIGHT };
+module_param_array(video, int, NULL, 0);
+MODULE_PARM_DESC(video,
+	"Video memory size in MB, width, height in pixels (default 2,800,600)");
+
+static void xenfb_make_preferred_console(void);
 static int xenfb_remove(struct xenbus_device *);
-static void xenfb_init_shared_page(struct xenfb_info *);
+static void xenfb_init_shared_page(struct xenfb_info *, struct fb_info *);
 static int xenfb_connect_backend(struct xenbus_device *, struct xenfb_info *);
 static void xenfb_disconnect_backend(struct xenfb_info *);
 
+static void xenfb_send_event(struct xenfb_info *info,
+			     union xenfb_out_event *event)
+{
+	u32 prod;
+
+	prod = info->page->out_prod;
+	/* caller ensures !xenfb_queue_full() */
+	mb();			/* ensure ring space available */
+	XENFB_OUT_RING_REF(info->page, prod) = *event;
+	wmb();			/* ensure ring contents visible */
+	info->page->out_prod = prod + 1;
+
+	notify_remote_via_irq(info->irq);
+}
+
 static void xenfb_do_update(struct xenfb_info *info,
 			    int x, int y, int w, int h)
 {
 	union xenfb_out_event event;
-	u32 prod;
 
+	memset(&event, 0, sizeof(event));
 	event.type = XENFB_TYPE_UPDATE;
 	event.update.x = x;
 	event.update.y = y;
 	event.update.width = w;
 	event.update.height = h;
 
-	prod = info->page->out_prod;
 	/* caller ensures !xenfb_queue_full() */
-	mb();			/* ensure ring space available */
-	XENFB_OUT_RING_REF(info->page, prod) = event;
-	wmb();			/* ensure ring contents visible */
-	info->page->out_prod = prod + 1;
+	xenfb_send_event(info, &event);
+}
 
-	notify_remote_via_irq(info->irq);
+static void xenfb_do_resize(struct xenfb_info *info)
+{
+	union xenfb_out_event event;
+
+	memset(&event, 0, sizeof(event));
+	event.resize = info->resize;
+
+	/* caller ensures !xenfb_queue_full() */
+	xenfb_send_event(info, &event);
 }
 
 static int xenfb_queue_full(struct xenfb_info *info)
@@ -84,12 +116,28 @@ static int xenfb_queue_full(struct xenfb_info *info)
 	return prod - cons == XENFB_OUT_RING_LEN;
 }
 
+static void xenfb_handle_resize_dpy(struct xenfb_info *info)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&info->resize_lock, flags);
+	if (info->resize_dpy) {
+		if (!xenfb_queue_full(info)) {
+			info->resize_dpy = 0;
+			xenfb_do_resize(info);
+		}
+	}
+	spin_unlock_irqrestore(&info->resize_lock, flags);
+}
+
 static void xenfb_refresh(struct xenfb_info *info,
 			  int x1, int y1, int w, int h)
 {
 	unsigned long flags;
-	int y2 = y1 + h - 1;
 	int x2 = x1 + w - 1;
+	int y2 = y1 + h - 1;
+
+	xenfb_handle_resize_dpy(info);
 
 	if (!info->update_wanted)
 		return;
@@ -222,6 +270,57 @@ static ssize_t xenfb_write(struct fb_info *p, const char __user *buf,
 	return res;
 }
 
+static int
+xenfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+	struct xenfb_info *xenfb_info;
+	int required_mem_len;
+
+	xenfb_info = info->par;
+
+	if (!xenfb_info->feature_resize) {
+		if (var->xres == video[KPARAM_WIDTH] &&
+		    var->yres == video[KPARAM_HEIGHT] &&
+		    var->bits_per_pixel == xenfb_info->page->depth) {
+			return 0;
+		}
+		return -EINVAL;
+	}
+
+	/* Can't resize past initial width and height */
+	if (var->xres > video[KPARAM_WIDTH] || var->yres > video[KPARAM_HEIGHT])
+		return -EINVAL;
+
+	required_mem_len = var->xres * var->yres * xenfb_info->page->depth / 8;
+	if (var->bits_per_pixel == xenfb_info->page->depth &&
+	    var->xres <= info->fix.line_length / (XENFB_DEPTH / 8) &&
+	    required_mem_len <= info->fix.smem_len) {
+		var->xres_virtual = var->xres;
+		var->yres_virtual = var->yres;
+		return 0;
+	}
+	return -EINVAL;
+}
+
+static int xenfb_set_par(struct fb_info *info)
+{
+	struct xenfb_info *xenfb_info;
+	unsigned long flags;
+
+	xenfb_info = info->par;
+
+	spin_lock_irqsave(&xenfb_info->resize_lock, flags);
+	xenfb_info->resize.type = XENFB_TYPE_RESIZE;
+	xenfb_info->resize.width = info->var.xres;
+	xenfb_info->resize.height = info->var.yres;
+	xenfb_info->resize.stride = info->fix.line_length;
+	xenfb_info->resize.depth = info->var.bits_per_pixel;
+	xenfb_info->resize.offset = 0;
+	xenfb_info->resize_dpy = 1;
+	spin_unlock_irqrestore(&xenfb_info->resize_lock, flags);
+	return 0;
+}
+
 static struct fb_ops xenfb_fb_ops = {
 	.owner		= THIS_MODULE,
 	.fb_read	= fb_sys_read,
@@ -230,6 +329,8 @@ static struct fb_ops xenfb_fb_ops = {
 	.fb_fillrect	= xenfb_fillrect,
 	.fb_copyarea	= xenfb_copyarea,
 	.fb_imageblit	= xenfb_imageblit,
+	.fb_check_var	= xenfb_check_var,
+	.fb_set_par     = xenfb_set_par,
 };
 
 static irqreturn_t xenfb_event_handler(int rq, void *dev_id)
@@ -258,6 +359,8 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
 {
 	struct xenfb_info *info;
 	struct fb_info *fb_info;
+	int fb_size;
+	int val;
 	int ret;
 
 	info = kzalloc(sizeof(*info), GFP_KERNEL);
@@ -265,18 +368,35 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
 		xenbus_dev_fatal(dev, -ENOMEM, "allocating info structure");
 		return -ENOMEM;
 	}
+
+	/* Limit kernel param videoram amount to what is in xenstore */
+	if (xenbus_scanf(XBT_NIL, dev->otherend, "videoram", "%d", &val) == 1) {
+		if (val < video[KPARAM_MEM])
+			video[KPARAM_MEM] = val;
+	}
+
+	/* If requested res does not fit in available memory, use default */
+	fb_size = video[KPARAM_MEM] * 1024 * 1024;
+	if (video[KPARAM_WIDTH] * video[KPARAM_HEIGHT] * XENFB_DEPTH / 8
+	    > fb_size) {
+		video[KPARAM_WIDTH] = XENFB_WIDTH;
+		video[KPARAM_HEIGHT] = XENFB_HEIGHT;
+		fb_size = XENFB_DEFAULT_FB_LEN;
+	}
+
 	dev->dev.driver_data = info;
 	info->xbdev = dev;
 	info->irq = -1;
 	info->x1 = info->y1 = INT_MAX;
 	spin_lock_init(&info->dirty_lock);
+	spin_lock_init(&info->resize_lock);
 
-	info->fb = vmalloc(xenfb_mem_len);
+	info->fb = vmalloc(fb_size);
 	if (info->fb == NULL)
 		goto error_nomem;
-	memset(info->fb, 0, xenfb_mem_len);
+	memset(info->fb, 0, fb_size);
 
-	info->nr_pages = (xenfb_mem_len + PAGE_SIZE - 1) >> PAGE_SHIFT;
+	info->nr_pages = (fb_size + PAGE_SIZE - 1) >> PAGE_SHIFT;
 
 	info->mfns = vmalloc(sizeof(unsigned long) * info->nr_pages);
 	if (!info->mfns)
@@ -287,8 +407,6 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
 	if (!info->page)
 		goto error_nomem;
 
-	xenfb_init_shared_page(info);
-
 	/* abusing framebuffer_alloc() to allocate pseudo_palette */
 	fb_info = framebuffer_alloc(sizeof(u32) * 256, NULL);
 	if (fb_info == NULL)
@@ -301,9 +419,9 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
 	fb_info->screen_base = info->fb;
 
 	fb_info->fbops = &xenfb_fb_ops;
-	fb_info->var.xres_virtual = fb_info->var.xres = info->page->width;
-	fb_info->var.yres_virtual = fb_info->var.yres = info->page->height;
-	fb_info->var.bits_per_pixel = info->page->depth;
+	fb_info->var.xres_virtual = fb_info->var.xres = video[KPARAM_WIDTH];
+	fb_info->var.yres_virtual = fb_info->var.yres = video[KPARAM_HEIGHT];
+	fb_info->var.bits_per_pixel = XENFB_DEPTH;
 
 	fb_info->var.red = (struct fb_bitfield){16, 8, 0};
 	fb_info->var.green = (struct fb_bitfield){8, 8, 0};
@@ -315,9 +433,9 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
 	fb_info->var.vmode = FB_VMODE_NONINTERLACED;
 
 	fb_info->fix.visual = FB_VISUAL_TRUECOLOR;
-	fb_info->fix.line_length = info->page->line_length;
+	fb_info->fix.line_length = fb_info->var.xres * XENFB_DEPTH / 8;
 	fb_info->fix.smem_start = 0;
-	fb_info->fix.smem_len = xenfb_mem_len;
+	fb_info->fix.smem_len = fb_size;
 	strcpy(fb_info->fix.id, "xen");
 	fb_info->fix.type = FB_TYPE_PACKED_PIXELS;
 	fb_info->fix.accel = FB_ACCEL_NONE;
@@ -334,6 +452,8 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
 	fb_info->fbdefio = &xenfb_defio;
 	fb_deferred_io_init(fb_info);
 
+	xenfb_init_shared_page(info, fb_info);
+
 	ret = register_framebuffer(fb_info);
 	if (ret) {
 		fb_deferred_io_cleanup(fb_info);
@@ -348,6 +468,7 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
 	if (ret < 0)
 		goto error;
 
+	xenfb_make_preferred_console();
 	return 0;
 
  error_nomem:
@@ -358,12 +479,34 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
 	return ret;
 }
 
+static __devinit void
+xenfb_make_preferred_console(void)
+{
+	struct console *c;
+
+	if (console_set_on_cmdline)
+		return;
+
+	acquire_console_sem();
+	for (c = console_drivers; c; c = c->next) {
+		if (!strcmp(c->name, "tty") && c->index == 0)
+			break;
+	}
+	release_console_sem();
+	if (c) {
+		unregister_console(c);
+		c->flags |= CON_CONSDEV;
+		c->flags &= ~CON_PRINTBUFFER; /* don't print again */
+		register_console(c);
+	}
+}
+
 static int xenfb_resume(struct xenbus_device *dev)
 {
 	struct xenfb_info *info = dev->dev.driver_data;
 
 	xenfb_disconnect_backend(info);
-	xenfb_init_shared_page(info);
+	xenfb_init_shared_page(info, info->fb_info);
 	return xenfb_connect_backend(dev, info);
 }
 
@@ -391,20 +534,23 @@ static unsigned long vmalloc_to_mfn(void *address)
 	return pfn_to_mfn(vmalloc_to_pfn(address));
 }
 
-static void xenfb_init_shared_page(struct xenfb_info *info)
+static void xenfb_init_shared_page(struct xenfb_info *info,
+				   struct fb_info *fb_info)
 {
 	int i;
+	int epd = PAGE_SIZE / sizeof(info->mfns[0]);
 
 	for (i = 0; i < info->nr_pages; i++)
 		info->mfns[i] = vmalloc_to_mfn(info->fb + i * PAGE_SIZE);
 
-	info->page->pd[0] = vmalloc_to_mfn(info->mfns);
-	info->page->pd[1] = 0;
-	info->page->width = XENFB_WIDTH;
-	info->page->height = XENFB_HEIGHT;
-	info->page->depth = XENFB_DEPTH;
-	info->page->line_length = (info->page->depth / 8) * info->page->width;
-	info->page->mem_length = xenfb_mem_len;
+	for (i = 0; i * epd < info->nr_pages; i++)
+		info->page->pd[i] = vmalloc_to_mfn(&info->mfns[i * epd]);
+
+	info->page->width = fb_info->var.xres;
+	info->page->height = fb_info->var.yres;
+	info->page->depth = fb_info->var.bits_per_pixel;
+	info->page->line_length = fb_info->fix.line_length;
+	info->page->mem_length = fb_info->fix.smem_len;
 	info->page->in_cons = info->page->in_prod = 0;
 	info->page->out_cons = info->page->out_prod = 0;
 }
@@ -504,6 +650,11 @@ InitWait:
 			val = 0;
 		if (val)
 			info->update_wanted = 1;
+
+		if (xenbus_scanf(XBT_NIL, dev->otherend,
+				 "feature-resize", "%d", &val) < 0)
+			val = 0;
+		info->feature_resize = val;
 		break;
 
 	case XenbusStateClosing:
@@ -547,4 +698,6 @@ static void __exit xenfb_cleanup(void)
 module_init(xenfb_init);
 module_exit(xenfb_cleanup);
 
+MODULE_DESCRIPTION("Xen virtual framebuffer device frontend");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("xen:vfb");