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drm/i915: Another fbdev hack to avoid PSR on fbcon. 

With unified modeset and flip paths introduced recently when switching
to fbcon PSR was being disabled on fb_set_par path but re-enabled on
fb_pan_display one, causing missed screen updates and un unusable
console.

Regression introduced with:

commit bb54662350
Author: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Date:   Tue Apr 21 17:13:13 2015 +0300

    drm/i915: Unify modeset and flip paths of intel_crtc_set_config()

Cc: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Rodrigo Vivi 2015-05-28 10:26:58 -07:00 committed by Daniel Vetter
parent 2d847d45b2
commit d9a946b523
1 changed files with 27 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/gpu/drm/i915/intel_fbdev.c
View File

@ -96,6 +96,32 @@ static int intel_fbdev_blank(int blank, struct fb_info *info)
return ret; return ret;
} }
static int intel_fbdev_pan_display(struct fb_var_screeninfo *var,
struct fb_info *info)
{
struct drm_fb_helper *fb_helper = info->par;
struct intel_fbdev *ifbdev =
container_of(fb_helper, struct intel_fbdev, helper);
int ret;
ret = drm_fb_helper_pan_display(var, info);
if (ret == 0) {
/*
* FIXME: fbdev presumes that all callbacks also work from
* atomic contexts and relies on that for emergency oops
* printing. KMS totally doesn't do that and the locking here is
* by far not the only place this goes wrong. Ignore this for
* now until we solve this for real.
*/
mutex_lock(&fb_helper->dev->struct_mutex);
intel_fb_obj_invalidate(ifbdev->fb->obj, NULL, ORIGIN_GTT);
mutex_unlock(&fb_helper->dev->struct_mutex);
}
return ret;
}
static struct fb_ops intelfb_ops = { static struct fb_ops intelfb_ops = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.fb_check_var = drm_fb_helper_check_var, .fb_check_var = drm_fb_helper_check_var,
@ -103,7 +129,7 @@ static struct fb_ops intelfb_ops = {
.fb_fillrect = cfb_fillrect, .fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea, .fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit, .fb_imageblit = cfb_imageblit,
.fb_pan_display = drm_fb_helper_pan_display, .fb_pan_display = intel_fbdev_pan_display,
.fb_blank = intel_fbdev_blank, .fb_blank = intel_fbdev_blank,
.fb_setcmap = drm_fb_helper_setcmap, .fb_setcmap = drm_fb_helper_setcmap,
.fb_debug_enter = drm_fb_helper_debug_enter, .fb_debug_enter = drm_fb_helper_debug_enter,