-static int intelfb_multi_fb_probe_crtc(struct drm_device *dev, struct drm_crtc *crtc)
-{
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- struct intel_framebuffer *intel_fb;
- struct drm_framebuffer *fb;
- struct drm_connector *connector;
- struct fb_info *info;
- struct intelfb_par *par;
- struct drm_mode_set *modeset;
- unsigned int width, height;
- int new_fb = 0;
- int ret, i, conn_count;
-
- if (!drm_helper_crtc_in_use(crtc))
- return 0;
-
- if (!crtc->desired_mode)
- return 0;
-
- width = crtc->desired_mode->hdisplay;
- height = crtc->desired_mode->vdisplay;
-
- /* is there an fb bound to this crtc already */
- if (!intel_crtc->mode_set.fb) {
- ret = intelfb_create(dev, width, height, width, height, &intel_fb);
- if (ret)
- return -EINVAL;
- new_fb = 1;
- } else {
- fb = intel_crtc->mode_set.fb;
- intel_fb = to_intel_framebuffer(fb);
- if ((intel_fb->base.width < width) || (intel_fb->base.height < height))
- return -EINVAL;
- }
-
- info = intel_fb->base.fbdev;
- par = info->par;
-
- modeset = &intel_crtc->mode_set;
- modeset->fb = &intel_fb->base;
- conn_count = 0;
- list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
- if (connector->encoder)
- if (connector->encoder->crtc == modeset->crtc) {
- modeset->connectors[conn_count] = connector;
- conn_count++;
- if (conn_count > INTELFB_CONN_LIMIT)
- BUG();
- }
- }
-
- for (i = conn_count; i < INTELFB_CONN_LIMIT; i++)
- modeset->connectors[i] = NULL;
-
- par->crtc_ids[0] = crtc->base.id;
-
- modeset->num_connectors = conn_count;
- if (modeset->mode != modeset->crtc->desired_mode)
- modeset->mode = modeset->crtc->desired_mode;
-
- par->crtc_count = 1;
-
- if (new_fb) {
- info->var.pixclock = -1;
- if (register_framebuffer(info) < 0)
- return -EINVAL;
- } else
- intelfb_set_par(info);
-
- printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node,
- info->fix.id);
-
- /* Switch back to kernel console on panic */
- kernelfb_mode = *modeset;
- atomic_notifier_chain_register(&panic_notifier_list, &paniced);
- printk(KERN_INFO "registered panic notifier\n");
-
- return 0;
-}
-
-static int intelfb_multi_fb_probe(struct drm_device *dev)
-{
-
- struct drm_crtc *crtc;
- int ret = 0;
-
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- ret = intelfb_multi_fb_probe_crtc(dev, crtc);
- if (ret)
- return ret;
- }
- return ret;
-}
-
-static int intelfb_single_fb_probe(struct drm_device *dev)
-{
- struct drm_crtc *crtc;
- struct drm_connector *connector;
- unsigned int fb_width = (unsigned)-1, fb_height = (unsigned)-1;
- unsigned int surface_width = 0, surface_height = 0;
- int new_fb = 0;
- int crtc_count = 0;
- int ret, i, conn_count = 0;
- struct intel_framebuffer *intel_fb;
- struct fb_info *info;
- struct intelfb_par *par;
- struct drm_mode_set *modeset = NULL;
-
- DRM_DEBUG("\n");
-
- /* Get a count of crtcs now in use and new min/maxes width/heights */
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- if (!drm_helper_crtc_in_use(crtc))
- continue;
-
- crtc_count++;
- if (!crtc->desired_mode)
- continue;
-
- /* Smallest mode determines console size... */
- if (crtc->desired_mode->hdisplay < fb_width)
- fb_width = crtc->desired_mode->hdisplay;
-
- if (crtc->desired_mode->vdisplay < fb_height)
- fb_height = crtc->desired_mode->vdisplay;
-
- /* ... but largest for memory allocation dimensions */
- if (crtc->desired_mode->hdisplay > surface_width)
- surface_width = crtc->desired_mode->hdisplay;
-
- if (crtc->desired_mode->vdisplay > surface_height)
- surface_height = crtc->desired_mode->vdisplay;
- }
-
- if (crtc_count == 0 || fb_width == -1 || fb_height == -1) {
- /* hmm everyone went away - assume VGA cable just fell out
- and will come back later. */
- DRM_DEBUG("no CRTCs available?\n");
- return 0;
- }
-
-//fail
- /* Find the fb for our new config */
- if (list_empty(&dev->mode_config.fb_kernel_list)) {
- DRM_DEBUG("creating new fb (console size %dx%d, "
- "buffer size %dx%d)\n", fb_width, fb_height,
- surface_width, surface_height);
- ret = intelfb_create(dev, fb_width, fb_height, surface_width,
- surface_height, &intel_fb);
- if (ret)
- return -EINVAL;
- new_fb = 1;
- } else {
- struct drm_framebuffer *fb;
-
- fb = list_first_entry(&dev->mode_config.fb_kernel_list,
- struct drm_framebuffer, filp_head);
- intel_fb = to_intel_framebuffer(fb);
-
- /* if someone hotplugs something bigger than we have already
- * allocated, we are pwned. As really we can't resize an
- * fbdev that is in the wild currently due to fbdev not really
- * being designed for the lower layers moving stuff around
- * under it.
- * - so in the grand style of things - punt.
- */
- if ((fb->width < surface_width) ||
- (fb->height < surface_height)) {
- DRM_ERROR("fb not large enough for console\n");
- return -EINVAL;
- }
- }
-// fail
-
- info = intel_fb->base.fbdev;
- par = info->par;
-
- crtc_count = 0;
- /*
- * For each CRTC, set up the connector list for the CRTC's mode
- * set configuration.
- */
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-
- modeset = &intel_crtc->mode_set;
- modeset->fb = &intel_fb->base;
- conn_count = 0;
- list_for_each_entry(connector, &dev->mode_config.connector_list,
- head) {
- if (!connector->encoder)
- continue;
-
- if(connector->encoder->crtc == modeset->crtc) {
- modeset->connectors[conn_count++] = connector;
- if (conn_count > INTELFB_CONN_LIMIT)
- BUG();
- }
- }
-
- /* Zero out remaining connector pointers */
- for (i = conn_count; i < INTELFB_CONN_LIMIT; i++)
- modeset->connectors[i] = NULL;
-
- par->crtc_ids[crtc_count++] = crtc->base.id;
-
- modeset->num_connectors = conn_count;
- if (modeset->mode != modeset->crtc->desired_mode)
- modeset->mode = modeset->crtc->desired_mode;
- }
- par->crtc_count = crtc_count;
-
- if (new_fb) {
- info->var.pixclock = -1;
- if (register_framebuffer(info) < 0)
- return -EINVAL;
- } else
- intelfb_set_par(info);
-
- printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node,
- info->fix.id);
-
- /* Switch back to kernel console on panic */
- kernelfb_mode = *modeset;
- atomic_notifier_chain_register(&panic_notifier_list, &paniced);
- printk(KERN_INFO "registered panic notifier\n");
-
- return 0;
-}
-
-/**
- * intelfb_restore - restore the framebuffer console (kernel) config
- *
- * Restore's the kernel's fbcon mode, used for lastclose & panic paths.
- */
-void intelfb_restore(void)
-{
- drm_crtc_helper_set_config(&kernelfb_mode);
-}
-
-static void intelfb_sysrq(int dummy1, struct tty_struct *dummy3)
-{
- intelfb_restore();
-}
-
-static struct sysrq_key_op sysrq_intelfb_restore_op = {
- .handler = intelfb_sysrq,
- .help_msg = "force-fb(V)",
- .action_msg = "Restore framebuffer console",
-};
-