drm/kms/fb: use slow work mechanism for normal hotplug also.

a) slow work is always used now for any fbcon hotplug, as its not
   a fast task and is more suited to being ran under slow work.

b) attempt to not do any fbdev changes when X is running as we'll
   just mess it up. This hooks set_par to hopefully do the changes
   once X hands control to fbdev.

This also adds the nouveau/intel hotplug support.

Signed-off-by: Dave Airlie <airlied@redhat.com>

3 files changed, 26 insertions, 19 deletions

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 5388354da0d..fdf08f22290 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -266,6 +266,7 @@ static void i915_hotplug_work_func(struct work_struct *work)
 		}
 	}
 	/* Just fire off a uevent and let userspace tell us what to do */
+	intelfb_hotplug(dev, false);
 	drm_sysfs_hotplug_event(dev);
 }
 
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 9ffb9f2c9ab..11fce595882 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -228,4 +228,6 @@ extern int intel_overlay_put_image(struct drm_device *dev, void *data,
 				   struct drm_file *file_priv);
 extern int intel_overlay_attrs(struct drm_device *dev, void *data,
 			       struct drm_file *file_priv);
+
+void intelfb_hotplug(struct drm_device *dev, bool polled);
 #endif /* __INTEL_DRV_H__ */
diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c
index 8f7a7c47609..cc726ff0a02 100644
--- a/drivers/gpu/drm/i915/intel_fb.c
+++ b/drivers/gpu/drm/i915/intel_fb.c
@@ -65,12 +65,6 @@ static struct fb_ops intelfb_ops = {
 	.fb_setcmap = drm_fb_helper_setcmap,
 };
 
-static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
-	.gamma_set = intel_crtc_fb_gamma_set,
-	.gamma_get = intel_crtc_fb_gamma_get,
-};
-
-
 static int intelfb_create(struct intel_fbdev *ifbdev,
 			  struct drm_fb_helper_surface_size *sizes)
 {
@@ -129,7 +123,6 @@ static int intelfb_create(struct intel_fbdev *ifbdev,
 
 	ifbdev->helper.fb = fb;
 	ifbdev->helper.fbdev = info;
-	ifbdev->helper.funcs = &intel_fb_helper_funcs;
 
 	strcpy(info->fix.id, "inteldrmfb");
 
@@ -154,6 +147,12 @@ static int intelfb_create(struct intel_fbdev *ifbdev,
 		ret = -ENOSPC;
 		goto out_unpin;
 	}
+
+	ret = fb_alloc_cmap(&info->cmap, 256, 0);
+	if (ret) {
+		ret = -ENOMEM;
+		goto out_unpin;
+	}
 	info->screen_size = size;
 
 //	memset(info->screen_base, 0, size);
@@ -205,15 +204,18 @@ static int intel_fb_find_or_create_single(struct drm_fb_helper *helper,
 	return new_fb;
 }
 
-static int intelfb_probe(struct intel_fbdev *ifbdev)
+void intelfb_hotplug(struct drm_device *dev, bool polled)
 {
-	int ret;
-
-	DRM_DEBUG_KMS("\n");
-	ret = drm_fb_helper_single_fb_probe(&ifbdev->helper, 32);
-	return ret;
+	drm_i915_private_t *dev_priv = dev->dev_private;
+	drm_helper_fb_hpd_irq_event(&dev_priv->fbdev->helper);
 }
 
+static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
+	.gamma_set = intel_crtc_fb_gamma_set,
+	.gamma_get = intel_crtc_fb_gamma_get,
+	.fb_probe = intel_fb_find_or_create_single,
+};
+
 int intel_fbdev_destroy(struct drm_device *dev,
 			struct intel_fbdev *ifbdev)
 {
@@ -224,10 +226,12 @@ int intel_fbdev_destroy(struct drm_device *dev,
 		info = ifbdev->helper.fbdev;
 		unregister_framebuffer(info);
 		iounmap(info->screen_base);
+		if (info->cmap.len)
+			fb_dealloc_cmap(&info->cmap);
 		framebuffer_release(info);
 	}
 
-	drm_fb_helper_free(&ifbdev->helper);
+	drm_fb_helper_fini(&ifbdev->helper);
 
 	drm_framebuffer_cleanup(&ifb->base);
 	if (ifb->obj)
@@ -246,13 +250,13 @@ int intel_fbdev_init(struct drm_device *dev)
 		return -ENOMEM;
 
 	dev_priv->fbdev = ifbdev;
+	ifbdev->helper.funcs = &intel_fb_helper_funcs;
+
+	drm_fb_helper_init(dev, &ifbdev->helper, 2,
+			   INTELFB_CONN_LIMIT, false);
 
-	drm_fb_helper_init_crtc_count(dev, &ifbdev->helper, 2,
-				      INTELFB_CONN_LIMIT);
 	drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
-	ifbdev->helper.fb_probe = intel_fb_find_or_create_single;
-	drm_fb_helper_initial_config(&ifbdev->helper);
-	intelfb_probe(ifbdev);
+	drm_fb_helper_initial_config(&ifbdev->helper, 32);
 	return 0;
 }