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drm/i915: restore only the mode of this driver on lastclose (v2)

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i915 calls the panic handler function on last close to reset the modes,
however this is a really bad idea for multi-gpu machines, esp shareable
gpus machines. So add a new entry point for the driver to just restore
its own fbcon mode.

v2: move code into fb helper, fix panic code to block mode change on
powered off GPUs.

[airlied: this hits drm core and I wrote it and it was reviewed on intel-gfx
 so really I signed it off twice ;-).]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2011-04-21 22:18:32 +01:00
parent 6565945b60
commit e8e7a2b8cc
5 changed files with 33 additions and 8 deletions
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1
include/drm/drm_fb_helper.h
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@@ -118,6 +118,7 @@ int drm_fb_helper_setcolreg(unsigned regno,
unsigned transp,
struct fb_info *info);
bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper);
void drm_fb_helper_restore(void);
void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
uint32_t fb_width, uint32_t fb_height);