drm/kms: properly handle fbdev blanking (731b5a15) · Commits · 戴 / test

drivers/gpu/drm/drm_fb_helper.c

+9 −6

Original line number	Diff line number	Diff line
		@@ -373,30 +373,33 @@ static void drm_fb_helper_off(struct fb_info *info, int dpms_mode)
		mutex_unlock(&dev->mode_config.mutex);
		}
		}
		if (dpms_mode == DRM_MODE_DPMS_OFF) {
		mutex_lock(&dev->mode_config.mutex);
		crtc_funcs->dpms(crtc, dpms_mode);
		crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
		mutex_unlock(&dev->mode_config.mutex);
		}
		}
		}
		}

		int drm_fb_helper_blank(int blank, struct fb_info *info)
		{
		switch (blank) {
		/* Display: On; HSync: On, VSync: On */
		case FB_BLANK_UNBLANK:
		drm_fb_helper_on(info);
		break;
		/* Display: Off; HSync: On, VSync: On */
		case FB_BLANK_NORMAL:
		drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY);
		drm_fb_helper_off(info, DRM_MODE_DPMS_ON);
		break;
		/* Display: Off; HSync: Off, VSync: On */
		case FB_BLANK_HSYNC_SUSPEND:
		drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY);
		break;
		/* Display: Off; HSync: On, VSync: Off */
		case FB_BLANK_VSYNC_SUSPEND:
		drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND);
		break;
		/* Display: Off; HSync: Off, VSync: Off */
		case FB_BLANK_POWERDOWN:
		drm_fb_helper_off(info, DRM_MODE_DPMS_OFF);
		break;