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path: root/drivers/video/efifb.c
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Diffstat (limited to 'drivers/video/efifb.c')
-rw-r--r--drivers/video/efifb.c232
1 files changed, 0 insertions, 232 deletions
diff --git a/drivers/video/efifb.c b/drivers/video/efifb.c
deleted file mode 100644
index bd779ae44b1..00000000000
--- a/drivers/video/efifb.c
+++ /dev/null
@@ -1,232 +0,0 @@
-/*
- * Framebuffer driver for EFI/UEFI based system
- *
- * (c) 2006 Edgar Hucek <gimli@dark-green.com>
- * Original efi driver written by Gerd Knorr <kraxel@goldbach.in-berlin.de>
- *
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/fb.h>
-#include <linux/platform_device.h>
-#include <linux/screen_info.h>
-
-#include <video/vga.h>
-
-static struct fb_var_screeninfo efifb_defined __initdata = {
- .activate = FB_ACTIVATE_NOW,
- .height = -1,
- .width = -1,
- .right_margin = 32,
- .upper_margin = 16,
- .lower_margin = 4,
- .vsync_len = 4,
- .vmode = FB_VMODE_NONINTERLACED,
-};
-
-static struct fb_fix_screeninfo efifb_fix __initdata = {
- .id = "EFI VGA",
- .type = FB_TYPE_PACKED_PIXELS,
- .accel = FB_ACCEL_NONE,
- .visual = FB_VISUAL_TRUECOLOR,
-};
-
-static int efifb_setcolreg(unsigned regno, unsigned red, unsigned green,
- unsigned blue, unsigned transp,
- struct fb_info *info)
-{
- /*
- * Set a single color register. The values supplied are
- * already rounded down to the hardware's capabilities
- * (according to the entries in the `var' structure). Return
- * != 0 for invalid regno.
- */
-
- if (regno >= info->cmap.len)
- return 1;
-
- if (regno < 16) {
- red >>= 8;
- green >>= 8;
- blue >>= 8;
- ((u32 *)(info->pseudo_palette))[regno] =
- (red << info->var.red.offset) |
- (green << info->var.green.offset) |
- (blue << info->var.blue.offset);
- }
- return 0;
-}
-
-static struct fb_ops efifb_ops = {
- .owner = THIS_MODULE,
- .fb_setcolreg = efifb_setcolreg,
- .fb_fillrect = cfb_fillrect,
- .fb_copyarea = cfb_copyarea,
- .fb_imageblit = cfb_imageblit,
-};
-
-static int __init efifb_probe(struct platform_device *dev)
-{
- struct fb_info *info;
- int err;
- unsigned int size_vmode;
- unsigned int size_remap;
- unsigned int size_total;
-
- efifb_fix.smem_start = screen_info.lfb_base;
- efifb_defined.bits_per_pixel = screen_info.lfb_depth;
- efifb_defined.xres = screen_info.lfb_width;
- efifb_defined.yres = screen_info.lfb_height;
- efifb_fix.line_length = screen_info.lfb_linelength;
-
- /* size_vmode -- that is the amount of memory needed for the
- * used video mode, i.e. the minimum amount of
- * memory we need. */
- size_vmode = efifb_defined.yres * efifb_fix.line_length;
-
- /* size_total -- all video memory we have. Used for
- * entries, ressource allocation and bounds
- * checking. */
- size_total = screen_info.lfb_size;
- if (size_total < size_vmode)
- size_total = size_vmode;
-
- /* size_remap -- the amount of video memory we are going to
- * use for efifb. With modern cards it is no
- * option to simply use size_total as that
- * wastes plenty of kernel address space. */
- size_remap = size_vmode * 2;
- if (size_remap < size_vmode)
- size_remap = size_vmode;
- if (size_remap > size_total)
- size_remap = size_total;
- efifb_fix.smem_len = size_remap;
-
- if (!request_mem_region(efifb_fix.smem_start, size_total, "efifb"))
- /* We cannot make this fatal. Sometimes this comes from magic
- spaces our resource handlers simply don't know about */
- printk(KERN_WARNING
- "efifb: cannot reserve video memory at 0x%lx\n",
- efifb_fix.smem_start);
-
- info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev);
- if (!info) {
- err = -ENOMEM;
- goto err_release_mem;
- }
- info->pseudo_palette = info->par;
- info->par = NULL;
-
- info->screen_base = ioremap(efifb_fix.smem_start, efifb_fix.smem_len);
- if (!info->screen_base) {
- printk(KERN_ERR "efifb: abort, cannot ioremap video memory "
- "0x%x @ 0x%lx\n",
- efifb_fix.smem_len, efifb_fix.smem_start);
- err = -EIO;
- goto err_unmap;
- }
-
- printk(KERN_INFO "efifb: framebuffer at 0x%lx, mapped to 0x%p, "
- "using %dk, total %dk\n",
- efifb_fix.smem_start, info->screen_base,
- size_remap/1024, size_total/1024);
- printk(KERN_INFO "efifb: mode is %dx%dx%d, linelength=%d, pages=%d\n",
- efifb_defined.xres, efifb_defined.yres,
- efifb_defined.bits_per_pixel, efifb_fix.line_length,
- screen_info.pages);
-
- efifb_defined.xres_virtual = efifb_defined.xres;
- efifb_defined.yres_virtual = efifb_fix.smem_len /
- efifb_fix.line_length;
- printk(KERN_INFO "efifb: scrolling: redraw\n");
- efifb_defined.yres_virtual = efifb_defined.yres;
-
- /* some dummy values for timing to make fbset happy */
- efifb_defined.pixclock = 10000000 / efifb_defined.xres *
- 1000 / efifb_defined.yres;
- efifb_defined.left_margin = (efifb_defined.xres / 8) & 0xf8;
- efifb_defined.hsync_len = (efifb_defined.xres / 8) & 0xf8;
-
- efifb_defined.red.offset = screen_info.red_pos;
- efifb_defined.red.length = screen_info.red_size;
- efifb_defined.green.offset = screen_info.green_pos;
- efifb_defined.green.length = screen_info.green_size;
- efifb_defined.blue.offset = screen_info.blue_pos;
- efifb_defined.blue.length = screen_info.blue_size;
- efifb_defined.transp.offset = screen_info.rsvd_pos;
- efifb_defined.transp.length = screen_info.rsvd_size;
-
- printk(KERN_INFO "efifb: %s: "
- "size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n",
- "Truecolor",
- screen_info.rsvd_size,
- screen_info.red_size,
- screen_info.green_size,
- screen_info.blue_size,
- screen_info.rsvd_pos,
- screen_info.red_pos,
- screen_info.green_pos,
- screen_info.blue_pos);
-
- efifb_fix.ypanstep = 0;
- efifb_fix.ywrapstep = 0;
-
- info->fbops = &efifb_ops;
- info->var = efifb_defined;
- info->fix = efifb_fix;
- info->flags = FBINFO_FLAG_DEFAULT;
-
- if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
- err = -ENOMEM;
- goto err_unmap;
- }
- if (register_framebuffer(info) < 0) {
- err = -EINVAL;
- goto err_fb_dealoc;
- }
- printk(KERN_INFO "fb%d: %s frame buffer device\n",
- info->node, info->fix.id);
- return 0;
-
-err_fb_dealoc:
- fb_dealloc_cmap(&info->cmap);
-err_unmap:
- iounmap(info->screen_base);
- framebuffer_release(info);
-err_release_mem:
- release_mem_region(efifb_fix.smem_start, size_total);
- return err;
-}
-
-static struct platform_driver efifb_driver = {
- .probe = efifb_probe,
- .driver = {
- .name = "efifb",
- },
-};
-
-static struct platform_device efifb_device = {
- .name = "efifb",
-};
-
-static int __init efifb_init(void)
-{
- int ret;
-
- if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI)
- return -ENODEV;
-
- ret = platform_driver_register(&efifb_driver);
-
- if (!ret) {
- ret = platform_device_register(&efifb_device);
- if (ret)
- platform_driver_unregister(&efifb_driver);
- }
- return ret;
-}
-module_init(efifb_init);
-
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-09 16:23:52 +0000