drm/nouveau: Use drm_fb_helper_output_poll_changed()

This driver can use drm_fb_helper_output_poll_changed() instead of
its own nouveau_fbcon_output_poll_changed().

Cc: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20171205182504.41923-8-noralf@tronnes.org

drivers/gpu/drm/nouveau/nouveau_display.c

@@ -29,6 +29,7 @@
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_helper.h>
 
 #include <nvif/class.h>
 
@@ -292,7 +293,7 @@ nouveau_user_framebuffer_create(struct drm_device *dev,
 
 static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
 	.fb_create = nouveau_user_framebuffer_create,
-	.output_poll_changed = nouveau_fbcon_output_poll_changed,
+	.output_poll_changed = drm_fb_helper_output_poll_changed,
 };
 
 

drivers/gpu/drm/nouveau/nouveau_fbcon.c

@@ -413,14 +413,6 @@ nouveau_fbcon_create(struct drm_fb_helper *helper,
 	return ret;
 }
 
-void
-nouveau_fbcon_output_poll_changed(struct drm_device *dev)
-{
-	struct nouveau_drm *drm = nouveau_drm(dev);
-	if (drm->fbcon)
-		drm_fb_helper_hotplug_event(&drm->fbcon->helper);
-}
-
 static int
 nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
 {

drivers/gpu/drm/nouveau/nouveau_fbcon.h

@@ -68,8 +68,6 @@ void nouveau_fbcon_set_suspend(struct drm_device *dev, int state);
 void nouveau_fbcon_accel_save_disable(struct drm_device *dev);
 void nouveau_fbcon_accel_restore(struct drm_device *dev);
 
-void nouveau_fbcon_output_poll_changed(struct drm_device *dev);
-
 extern int nouveau_nofbaccel;
 
 #endif /* __NV50_FBCON_H__ */

drivers/gpu/drm/nouveau/nouveau_vga.c

@@ -4,6 +4,7 @@
 
 #include <drm/drmP.h>
 #include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_helper.h>
 
 #include "nouveau_drv.h"
 #include "nouveau_acpi.h"
@@ -61,7 +62,7 @@ static void
 nouveau_switcheroo_reprobe(struct pci_dev *pdev)
 {
 	struct drm_device *dev = pci_get_drvdata(pdev);
-	nouveau_fbcon_output_poll_changed(dev);
+	drm_fb_helper_output_poll_changed(dev);
 }
 
 static bool

drivers/gpu/drm/nouveau/nv50_display.c

@@ -4311,7 +4311,7 @@ nv50_disp_atomic_state_alloc(struct drm_device *dev)
 static const struct drm_mode_config_funcs
 nv50_disp_func = {
 	.fb_create = nouveau_user_framebuffer_create,
-	.output_poll_changed = nouveau_fbcon_output_poll_changed,
+	.output_poll_changed = drm_fb_helper_output_poll_changed,
 	.atomic_check = nv50_disp_atomic_check,
 	.atomic_commit = nv50_disp_atomic_commit,
 	.atomic_state_alloc = nv50_disp_atomic_state_alloc,