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 e0c5f96b273d..9b887ef64ff1 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 dcd8073c2369..30bf7f2f1635 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 33f6c7cecc73..b51a7cd12500 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 000000000000..6338d0e2fe07
--- /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 776f7fcd2fbf..33ebdb198daf 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 fafe7db20d6d..d0746261c957 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 4fb16240c04d..f5252c2552fd 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 619a6f8d65a2..47ed39b52f9c 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");