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path: root/drivers/gpu/drm/drm_fb_helper.c
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Diffstat (limited to 'drivers/gpu/drm/drm_fb_helper.c')
-rw-r--r--drivers/gpu/drm/drm_fb_helper.c27
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 950720473967..11d7a72c22d9 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -342,9 +342,22 @@ int drm_fb_helper_debug_leave(struct fb_info *info)
}
EXPORT_SYMBOL(drm_fb_helper_debug_leave);
+bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper)
+{
+ bool error = false;
+ int i, ret;
+ for (i = 0; i < fb_helper->crtc_count; i++) {
+ struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set;
+ ret = drm_crtc_helper_set_config(mode_set);
+ if (ret)
+ error = true;
+ }
+ return error;
+}
+EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode);
+
bool drm_fb_helper_force_kernel_mode(void)
{
- int i = 0;
bool ret, error = false;
struct drm_fb_helper *helper;
@@ -352,12 +365,12 @@ bool drm_fb_helper_force_kernel_mode(void)
return false;
list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) {
- for (i = 0; i < helper->crtc_count; i++) {
- struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set;
- ret = drm_crtc_helper_set_config(mode_set);
- if (ret)
- error = true;
- }
+ if (helper->dev->switch_power_state == DRM_SWITCH_POWER_OFF)
+ continue;
+
+ ret = drm_fb_helper_restore_fbdev_mode(helper);
+ if (ret)
+ error = true;
}
return error;
}