fbcon: Add ability to save/restore graphics state
Subsystems (2)
PATCH 1/18 fbcon: Add ability to save/restore graphics state
Add hooks to save and restore the graphics state. These hooks are called in fbcon_blank() when entering/leaving KD_GRAPHICS mode. This is needed by savagefb at least so it can cooperate with savage_dri and by cyblafb.
State save/restoration can be full or partial.
Signed-off-by Antonino Daplas <[email protected]>
---
drivers/video/console/fbcon.c | 5 ++++- include/linux/fb.h | 6 ++++++ 2 files changed, 10 insertions(+), 1 deletions(-)
drivers/video/console/fbcon.c +4 -1
@@ -2181,11 +2181,14 @@ static int fbcon_blank(struct vc_data *v ops->graphics =1 ;if (!blank) { +if (info->fbops->fb_save_state) + info->fbops->fb_save_state (info); var.activate =FB_ACTIVATE_NOW |FB_ACTIVATE_FORCE ;fb_set_var (info, &var); ops->graphics =0 ; ops->var = info->var; - } + }else if (info->fbops->fb_restore_state) + info->fbops->fb_restore_state (info); }if (!fbcon_is_inactive (vc, info)) {
include/linux/fb.h +6 -0
@@ -617,6 +617,12 @@ struct fb_ops {/* perform fb specific mmap */ int (*fb_mmap)(struct fb_info *info,struct file *file,struct vm_area_struct *vma); + +/* save current hardware state */ +void (*fb_save_state)(struct fb_info *info); + +/* restore saved state */ +void (*fb_restore_state)(struct fb_info *info); };#ifdef CONFIG_FB_TILEBLITTING
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