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offb: Add support for framebuffer handoff to offb.

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This allows offb to be used for initial framebuffer,
and a kms driver to take over later in the boot sequence.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Dave Airlie 2009-12-06 20:01:26 +00:00 committed by Benjamin Herrenschmidt
parent 88358ab089
commit ceae8cbe94
1 changed files with 14 additions and 1 deletions
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15
drivers/video/offb.c
View file

@ -282,8 +282,17 @@ static int offb_set_par(struct fb_info *info)
return 0; return 0;
} }
static void offb_destroy(struct fb_info *info)
{
if (info->screen_base)
iounmap(info->screen_base);
release_mem_region(info->aperture_base, info->aperture_size);
framebuffer_release(info);
}
static struct fb_ops offb_ops = { static struct fb_ops offb_ops = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.fb_destroy = offb_destroy,
.fb_setcolreg = offb_setcolreg, .fb_setcolreg = offb_setcolreg,
.fb_set_par = offb_set_par, .fb_set_par = offb_set_par,
.fb_blank = offb_blank, .fb_blank = offb_blank,
@ -482,10 +491,14 @@ static void __init offb_init_fb(const char *name, const char *full_name,
var->sync = 0; var->sync = 0;
var->vmode = FB_VMODE_NONINTERLACED; var->vmode = FB_VMODE_NONINTERLACED;
/* set offb aperture size for generic probing */
info->aperture_base = address;
info->aperture_size = fix->smem_len;
info->fbops = &offb_ops; info->fbops = &offb_ops;
info->screen_base = ioremap(address, fix->smem_len); info->screen_base = ioremap(address, fix->smem_len);
info->pseudo_palette = (void *) (info + 1); info->pseudo_palette = (void *) (info + 1);
info->flags = FBINFO_DEFAULT | foreign_endian; info->flags = FBINFO_DEFAULT | FBINFO_MISC_FIRMWARE | foreign_endian;
fb_alloc_cmap(&info->cmap, 256, 0); fb_alloc_cmap(&info->cmap, 256, 0);