fbdev: don't show logo if driver or fbcon are modular
[safe/jmp/linux-2.6] / drivers / video / fbmem.c
index a2102a5..08c292d 100644 (file)
  * for more details.
  */
 
-#include <linux/config.h>
 #include <linux/module.h>
 
 #include <linux/compat.h>
 #include <linux/types.h>
 #include <linux/errno.h>
-#include <linux/sched.h>
 #include <linux/smp_lock.h>
 #include <linux/kernel.h>
 #include <linux/major.h>
 #include <linux/slab.h>
 #include <linux/mm.h>
 #include <linux/mman.h>
-#include <linux/tty.h>
+#include <linux/vt.h>
 #include <linux/init.h>
 #include <linux/linux_logo.h>
 #include <linux/proc_fs.h>
@@ -32,7 +30,6 @@
 #ifdef CONFIG_KMOD
 #include <linux/kmod.h>
 #endif
-#include <linux/devfs_fs_kernel.h>
 #include <linux/err.h>
 #include <linux/device.h>
 #include <linux/efi.h>
@@ -54,9 +51,8 @@
 
 #define FBPIXMAPSIZE   (1024 * 8)
 
-static BLOCKING_NOTIFIER_HEAD(fb_notifier_list);
-struct fb_info *registered_fb[FB_MAX];
-int num_registered_fb;
+struct fb_info *registered_fb[FB_MAX] __read_mostly;
+int num_registered_fb __read_mostly;
 
 /*
  * Helpers
@@ -205,7 +201,7 @@ static void  fb_set_logo_truepalette(struct fb_info *info,
                                            const struct linux_logo *logo,
                                            u32 *palette)
 {
-       unsigned char mask[9] = { 0,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff };
+       static const unsigned char mask[] = { 0,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff };
        unsigned char redmask, greenmask, bluemask;
        int redshift, greenshift, blueshift;
        int i;
@@ -320,7 +316,7 @@ static struct logo_data {
        int needs_truepalette;
        int needs_cmapreset;
        const struct linux_logo *logo;
-} fb_logo;
+} fb_logo __read_mostly;
 
 static void fb_rotate_logo_ud(const u8 *in, u8 *out, u32 width, u32 height)
 {
@@ -358,59 +354,59 @@ static void fb_rotate_logo(struct fb_info *info, u8 *dst,
        if (rotate == FB_ROTATE_UD) {
                fb_rotate_logo_ud(image->data, dst, image->width,
                                  image->height);
-               image->dx = info->var.xres - image->width;
-               image->dy = info->var.yres - image->height;
+               image->dx = info->var.xres - image->width - image->dx;
+               image->dy = info->var.yres - image->height - image->dy;
        } else if (rotate == FB_ROTATE_CW) {
                fb_rotate_logo_cw(image->data, dst, image->width,
                                  image->height);
                tmp = image->width;
                image->width = image->height;
                image->height = tmp;
-               image->dx = info->var.xres - image->width;
+               tmp = image->dy;
+               image->dy = image->dx;
+               image->dx = info->var.xres - image->width - tmp;
        } else if (rotate == FB_ROTATE_CCW) {
                fb_rotate_logo_ccw(image->data, dst, image->width,
                                   image->height);
                tmp = image->width;
                image->width = image->height;
                image->height = tmp;
-               image->dy = info->var.yres - image->height;
+               tmp = image->dx;
+               image->dx = image->dy;
+               image->dy = info->var.yres - image->height - tmp;
        }
 
        image->data = dst;
 }
 
 static void fb_do_show_logo(struct fb_info *info, struct fb_image *image,
-                           int rotate)
+                           int rotate, unsigned int num)
 {
-       int x;
+       unsigned int x;
 
        if (rotate == FB_ROTATE_UR) {
-               for (x = 0; x < num_online_cpus() &&
-                            x * (fb_logo.logo->width + 8) <=
-                            info->var.xres - fb_logo.logo->width; x++) {
+               for (x = 0;
+                    x < num && image->dx + image->width <= info->var.xres;
+                    x++) {
                        info->fbops->fb_imageblit(info, image);
-                       image->dx += fb_logo.logo->width + 8;
+                       image->dx += image->width + 8;
                }
        } else if (rotate == FB_ROTATE_UD) {
-               for (x = 0; x < num_online_cpus() &&
-                            x * (fb_logo.logo->width + 8) <=
-                            info->var.xres - fb_logo.logo->width; x++) {
+               for (x = 0; x < num && image->dx >= 0; x++) {
                        info->fbops->fb_imageblit(info, image);
-                       image->dx -= fb_logo.logo->width + 8;
+                       image->dx -= image->width + 8;
                }
        } else if (rotate == FB_ROTATE_CW) {
-               for (x = 0; x < num_online_cpus() &&
-                            x * (fb_logo.logo->width + 8) <=
-                            info->var.yres - fb_logo.logo->width; x++) {
+               for (x = 0;
+                    x < num && image->dy + image->height <= info->var.yres;
+                    x++) {
                        info->fbops->fb_imageblit(info, image);
-                       image->dy += fb_logo.logo->width + 8;
+                       image->dy += image->height + 8;
                }
        } else if (rotate == FB_ROTATE_CCW) {
-               for (x = 0; x < num_online_cpus() &&
-                            x * (fb_logo.logo->width + 8) <=
-                            info->var.yres - fb_logo.logo->width; x++) {
+               for (x = 0; x < num && image->dy >= 0; x++) {
                        info->fbops->fb_imageblit(info, image);
-                       image->dy -= fb_logo.logo->width + 8;
+                       image->dy -= image->height + 8;
                }
        }
 }
@@ -422,7 +418,8 @@ int fb_prepare_logo(struct fb_info *info, int rotate)
 
        memset(&fb_logo, 0, sizeof(struct logo_data));
 
-       if (info->flags & FBINFO_MISC_TILEBLITTING)
+       if (info->flags & FBINFO_MISC_TILEBLITTING ||
+           info->flags & FBINFO_MODULE)
                return 0;
 
        if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
@@ -487,7 +484,8 @@ int fb_show_logo(struct fb_info *info, int rotate)
        struct fb_image image;
 
        /* Return if the frame buffer is not mapped or suspended */
-       if (fb_logo.logo == NULL || info->state != FBINFO_STATE_RUNNING)
+       if (fb_logo.logo == NULL || info->state != FBINFO_STATE_RUNNING ||
+           info->flags & FBINFO_MODULE)
                return 0;
 
        image.depth = 8;
@@ -536,7 +534,7 @@ int fb_show_logo(struct fb_info *info, int rotate)
                        fb_rotate_logo(info, logo_rotate, &image, rotate);
        }
 
-       fb_do_show_logo(info, &image, rotate);
+       fb_do_show_logo(info, &image, rotate, num_online_cpus());
 
        kfree(palette);
        if (saved_pseudo_palette != NULL)
@@ -557,7 +555,8 @@ static int fbmem_read_proc(char *buf, char **start, off_t offset,
        int clen;
 
        clen = 0;
-       for (fi = registered_fb; fi < &registered_fb[FB_MAX] && len < 4000; fi++)
+       for (fi = registered_fb; fi < &registered_fb[FB_MAX] && clen < 4000;
+            fi++)
                if (*fi)
                        clen += sprintf(buf + clen, "%d %s\n",
                                        (*fi)->node,
@@ -574,7 +573,7 @@ static ssize_t
 fb_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 {
        unsigned long p = *ppos;
-       struct inode *inode = file->f_dentry->d_inode;
+       struct inode *inode = file->f_path.dentry->d_inode;
        int fbidx = iminor(inode);
        struct fb_info *info = registered_fb[fbidx];
        u32 *buffer, *dst;
@@ -649,7 +648,7 @@ static ssize_t
 fb_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
 {
        unsigned long p = *ppos;
-       struct inode *inode = file->f_dentry->d_inode;
+       struct inode *inode = file->f_path.dentry->d_inode;
        int fbidx = iminor(inode);
        struct fb_info *info = registered_fb[fbidx];
        u32 *buffer, *src;
@@ -793,8 +792,7 @@ fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var)
 
                    event.info = info;
                    event.data = &mode1;
-                   ret = blocking_notifier_call_chain(&fb_notifier_list,
-                                             FB_EVENT_MODE_DELETE, &event);
+                   ret = fb_notifier_call_chain(FB_EVENT_MODE_DELETE, &event);
                }
 
                if (!ret)
@@ -839,8 +837,7 @@ fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var)
 
                                info->flags &= ~FBINFO_MISC_USEREVENT;
                                event.info = info;
-                               blocking_notifier_call_chain(&fb_notifier_list,
-                                               evnt, &event);
+                               fb_notifier_call_chain(evnt, &event);
                        }
                }
        }
@@ -863,8 +860,7 @@ fb_blank(struct fb_info *info, int blank)
 
                event.info = info;
                event.data = &blank;
-               blocking_notifier_call_chain(&fb_notifier_list,
-                               FB_EVENT_BLANK, &event);
+               fb_notifier_call_chain(FB_EVENT_BLANK, &event);
        }
 
        return ret;
@@ -935,8 +931,7 @@ fb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
                con2fb.framebuffer = -1;
                event.info = info;
                event.data = &con2fb;
-               blocking_notifier_call_chain(&fb_notifier_list,
-                                   FB_EVENT_GET_CONSOLE_MAP, &event);
+               fb_notifier_call_chain(FB_EVENT_GET_CONSOLE_MAP, &event);
                return copy_to_user(argp, &con2fb,
                                    sizeof(con2fb)) ? -EFAULT : 0;
        case FBIOPUT_CON2FBMAP:
@@ -954,9 +949,8 @@ fb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
                    return -EINVAL;
                event.info = info;
                event.data = &con2fb;
-               return blocking_notifier_call_chain(&fb_notifier_list,
-                                          FB_EVENT_SET_CONSOLE_MAP,
-                                          &event);
+               return fb_notifier_call_chain(FB_EVENT_SET_CONSOLE_MAP,
+                                             &event);
        case FBIOBLANK:
                acquire_console_sem();
                info->flags |= FBINFO_MISC_USEREVENT;
@@ -1088,7 +1082,7 @@ static int fb_get_fscreeninfo(struct inode *inode, struct file *file,
 static long
 fb_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
-       struct inode *inode = file->f_dentry->d_inode;
+       struct inode *inode = file->f_path.dentry->d_inode;
        int fbidx = iminor(inode);
        struct fb_info *info = registered_fb[fbidx];
        struct fb_ops *fb = info->fbops;
@@ -1128,7 +1122,7 @@ fb_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 static int 
 fb_mmap(struct file *file, struct vm_area_struct * vma)
 {
-       int fbidx = iminor(file->f_dentry->d_inode);
+       int fbidx = iminor(file->f_path.dentry->d_inode);
        struct fb_info *info = registered_fb[fbidx];
        struct fb_ops *fb = info->fbops;
        unsigned long off;
@@ -1260,7 +1254,7 @@ fb_release(struct inode *inode, struct file *file)
        return 0;
 }
 
-static struct file_operations fb_fops = {
+static const struct file_operations fb_fops = {
        .owner =        THIS_MODULE,
        .read =         fb_read,
        .write =        fb_write,
@@ -1274,6 +1268,9 @@ static struct file_operations fb_fops = {
 #ifdef HAVE_ARCH_FB_UNMAPPED_AREA
        .get_unmapped_area = get_fb_unmapped_area,
 #endif
+#ifdef CONFIG_FB_DEFERRED_IO
+       .fsync =        fb_deferred_io_fsync,
+#endif
 };
 
 struct class *fb_class;
@@ -1303,14 +1300,14 @@ register_framebuffer(struct fb_info *fb_info)
                        break;
        fb_info->node = i;
 
-       fb_info->class_device = class_device_create(fb_class, NULL, MKDEV(FB_MAJOR, i),
-                                   fb_info->device, "fb%d", i);
-       if (IS_ERR(fb_info->class_device)) {
+       fb_info->dev = device_create(fb_class, fb_info->device,
+                                    MKDEV(FB_MAJOR, i), "fb%d", i);
+       if (IS_ERR(fb_info->dev)) {
                /* Not fatal */
-               printk(KERN_WARNING "Unable to create class_device for framebuffer %d; errno = %ld\n", i, PTR_ERR(fb_info->class_device));
-               fb_info->class_device = NULL;
+               printk(KERN_WARNING "Unable to create device for framebuffer %d; errno = %ld\n", i, PTR_ERR(fb_info->dev));
+               fb_info->dev = NULL;
        } else
-               fb_init_class_device(fb_info);
+               fb_init_device(fb_info);
 
        if (fb_info->pixmap.addr == NULL) {
                fb_info->pixmap.addr = kmalloc(FBPIXMAPSIZE, GFP_KERNEL);
@@ -1331,11 +1328,8 @@ register_framebuffer(struct fb_info *fb_info)
        fb_add_videomode(&mode, &fb_info->modelist);
        registered_fb[i] = fb_info;
 
-       devfs_mk_cdev(MKDEV(FB_MAJOR, i),
-                       S_IFCHR | S_IRUGO | S_IWUGO, "fb/%d", i);
        event.info = fb_info;
-       blocking_notifier_call_chain(&fb_notifier_list,
-                           FB_EVENT_FB_REGISTERED, &event);
+       fb_notifier_call_chain(FB_EVENT_FB_REGISTERED, &event);
        return 0;
 }
 
@@ -1353,42 +1347,27 @@ register_framebuffer(struct fb_info *fb_info)
 int
 unregister_framebuffer(struct fb_info *fb_info)
 {
+       struct fb_event event;
        int i;
 
        i = fb_info->node;
        if (!registered_fb[i])
                return -EINVAL;
-       devfs_remove("fb/%d", i);
 
-       if (fb_info->pixmap.addr && (fb_info->pixmap.flags & FB_PIXMAP_DEFAULT))
+       if (fb_info->pixmap.addr &&
+           (fb_info->pixmap.flags & FB_PIXMAP_DEFAULT))
                kfree(fb_info->pixmap.addr);
        fb_destroy_modelist(&fb_info->modelist);
        registered_fb[i]=NULL;
        num_registered_fb--;
-       fb_cleanup_class_device(fb_info);
-       class_device_destroy(fb_class, MKDEV(FB_MAJOR, i));
+       fb_cleanup_device(fb_info);
+       device_destroy(fb_class, MKDEV(FB_MAJOR, i));
+       event.info = fb_info;
+       fb_notifier_call_chain(FB_EVENT_FB_UNREGISTERED, &event);
        return 0;
 }
 
 /**
- *     fb_register_client - register a client notifier
- *     @nb: notifier block to callback on events
- */
-int fb_register_client(struct notifier_block *nb)
-{
-       return blocking_notifier_chain_register(&fb_notifier_list, nb);
-}
-
-/**
- *     fb_unregister_client - unregister a client notifier
- *     @nb: notifier block to callback on events
- */
-int fb_unregister_client(struct notifier_block *nb)
-{
-       return blocking_notifier_chain_unregister(&fb_notifier_list, nb);
-}
-
-/**
  *     fb_set_suspend - low level driver signals suspend
  *     @info: framebuffer affected
  *     @state: 0 = resuming, !=0 = suspending
@@ -1403,13 +1382,11 @@ void fb_set_suspend(struct fb_info *info, int state)
 
        event.info = info;
        if (state) {
-               blocking_notifier_call_chain(&fb_notifier_list,
-                               FB_EVENT_SUSPEND, &event);
+               fb_notifier_call_chain(FB_EVENT_SUSPEND, &event);
                info->state = FBINFO_STATE_SUSPENDED;
        } else {
                info->state = FBINFO_STATE_RUNNING;
-               blocking_notifier_call_chain(&fb_notifier_list,
-                               FB_EVENT_RESUME, &event);
+               fb_notifier_call_chain(FB_EVENT_RESUME, &event);
        }
 }
 
@@ -1427,7 +1404,6 @@ fbmem_init(void)
 {
        create_proc_read_entry("fb", 0, NULL, fbmem_read_proc, NULL);
 
-       devfs_mk_dir("fb");
        if (register_chrdev(FB_MAJOR,"fb",&fb_fops))
                printk("unable to get major %d for fb devs\n", FB_MAJOR);
 
@@ -1481,16 +1457,14 @@ int fb_new_modelist(struct fb_info *info)
 
        if (!list_empty(&info->modelist)) {
                event.info = info;
-               err = blocking_notifier_call_chain(&fb_notifier_list,
-                                          FB_EVENT_NEW_MODELIST,
-                                          &event);
+               err = fb_notifier_call_chain(FB_EVENT_NEW_MODELIST, &event);
        }
 
        return err;
 }
 
-static char *video_options[FB_MAX];
-static int ofonly;
+static char *video_options[FB_MAX] __read_mostly;
+static int ofonly __read_mostly;
 
 extern const char *global_mode_option;
 
@@ -1595,8 +1569,6 @@ EXPORT_SYMBOL(fb_blank);
 EXPORT_SYMBOL(fb_pan_display);
 EXPORT_SYMBOL(fb_get_buffer_offset);
 EXPORT_SYMBOL(fb_set_suspend);
-EXPORT_SYMBOL(fb_register_client);
-EXPORT_SYMBOL(fb_unregister_client);
 EXPORT_SYMBOL(fb_get_options);
 
 MODULE_LICENSE("GPL");