drm/xen: drop use of drmP.h

The drmP.h header is deprecated.  Drop all uses.
Added includes/forwards to the header files and
then fixed fallout in the .c files.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Acked-by: Emil Velikov <emil.velikov@collabora.com>
Cc: xen-devel@lists.xenproject.org
Link: https://patchwork.freedesktop.org/patch/msgid/20190630061922.7254-3-sam@ravnborg.org

drivers/gpu/drm/xen/xen_drm_front.c

@@ -8,13 +8,18 @@
  * Author: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
  */
 
-#include <drm/drmP.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+
 #include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_ioctl.h>
 #include <drm/drm_probe_helper.h>
+#include <drm/drm_file.h>
 #include <drm/drm_gem.h>
 
-#include <linux/of_device.h>
-
 #include <xen/platform_pci.h>
 #include <xen/xen.h>
 #include <xen/xenbus.h>

drivers/gpu/drm/xen/xen_drm_front.h

@@ -11,13 +11,18 @@
 #ifndef __XEN_DRM_FRONT_H_
 #define __XEN_DRM_FRONT_H_
 
-#include <drm/drmP.h>
-#include <drm/drm_simple_kms_helper.h>
-
 #include <linux/scatterlist.h>
 
+#include <drm/drm_connector.h>
+#include <drm/drm_simple_kms_helper.h>
+
 #include "xen_drm_front_cfg.h"
 
+struct drm_device;
+struct drm_framebuffer;
+struct drm_gem_object;
+struct drm_pending_vblank_event;
+
 /**
  * DOC: Driver modes of operation in terms of display buffers used
  *

drivers/gpu/drm/xen/xen_drm_front_cfg.c

@@ -8,10 +8,10 @@
  * Author: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
  */
 
-#include <drm/drmP.h>
-
 #include <linux/device.h>
 
+#include <drm/drm_print.h>
+
 #include <xen/interface/io/displif.h>
 #include <xen/xenbus.h>
 

drivers/gpu/drm/xen/xen_drm_front_conn.c

@@ -9,6 +9,7 @@
  */
 
 #include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
 #include <drm/drm_probe_helper.h>
 
 #include <video/videomode.h>

drivers/gpu/drm/xen/xen_drm_front_conn.h

@@ -11,11 +11,10 @@
 #ifndef __XEN_DRM_FRONT_CONN_H_
 #define __XEN_DRM_FRONT_CONN_H_
 
-#include <drm/drmP.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_encoder.h>
+#include <linux/types.h>
 
-#include <linux/wait.h>
+struct drm_connector;
+struct xen_drm_front_drm_info;
 
 struct xen_drm_front_drm_info;
 

drivers/gpu/drm/xen/xen_drm_front_evtchnl.c

@@ -8,11 +8,11 @@
  * Author: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
  */
 
-#include <drm/drmP.h>
-
 #include <linux/errno.h>
 #include <linux/irq.h>
 
+#include <drm/drm_print.h>
+
 #include <xen/xenbus.h>
 #include <xen/events.h>
 #include <xen/grant_table.h>

drivers/gpu/drm/xen/xen_drm_front_gem.c

@@ -8,20 +8,19 @@
  * Author: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
  */
 
-#include "xen_drm_front_gem.h"
+#include <linux/dma-buf.h>
+#include <linux/scatterlist.h>
+#include <linux/shmem_fs.h>
 
-#include <drm/drmP.h>
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_gem.h>
+#include <drm/drm_prime.h>
 #include <drm/drm_probe_helper.h>
 
-#include <linux/dma-buf.h>
-#include <linux/scatterlist.h>
-#include <linux/shmem_fs.h>
-
 #include <xen/balloon.h>
 
 #include "xen_drm_front.h"
+#include "xen_drm_front_gem.h"
 
 struct xen_gem_object {
 	struct drm_gem_object base;

drivers/gpu/drm/xen/xen_drm_front_gem.h

@@ -11,7 +11,12 @@
 #ifndef __XEN_DRM_FRONT_GEM_H
 #define __XEN_DRM_FRONT_GEM_H
 
-#include <drm/drmP.h>
+struct dma_buf_attachment;
+struct drm_device;
+struct drm_gem_object;
+struct file;
+struct sg_table;
+struct vm_area_struct;
 
 struct drm_gem_object *xen_drm_front_gem_create(struct drm_device *dev,
 						size_t size);

drivers/gpu/drm/xen/xen_drm_front_kms.c

@@ -8,17 +8,18 @@
  * Author: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
  */
 
-#include "xen_drm_front_kms.h"
-
-#include <drm/drmP.h>
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fourcc.h>
 #include <drm/drm_gem.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_probe_helper.h>
+#include <drm/drm_vblank.h>
 
 #include "xen_drm_front.h"
 #include "xen_drm_front_conn.h"
+#include "xen_drm_front_kms.h"
 
 /*
  * Timeout in ms to wait for frame done event from the backend: