Hi

Am 04.01.24 um 17:00 schrieb Jocelyn Falempe:
Add support for the drm_panic module, which displays a message to
the screen when a kernel panic occurs.

v5:
  * Also check that the plane is visible and primary. (Thomas Zimmermann)

v7:
  * use drm_for_each_primary_visible_plane()

Signed-off-by: Jocelyn Falempe <jfale...@redhat.com>
---
  drivers/gpu/drm/mgag200/mgag200_drv.c | 22 ++++++++++++++++++++++
  1 file changed, 22 insertions(+)

diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.c 
b/drivers/gpu/drm/mgag200/mgag200_drv.c
index 2fb18b782b05..2bf5918eadc5 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.c
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.c
@@ -13,10 +13,12 @@
  #include <drm/drm_atomic_helper.h>
  #include <drm/drm_drv.h>
  #include <drm/drm_fbdev_generic.h>
+#include <drm/drm_framebuffer.h>

Needs to go below drm_file.h

With that fixed:

Reviewed-by: Thomas Zimmermann <tzimmerm...@suse.de>

  #include <drm/drm_file.h>
  #include <drm/drm_ioctl.h>
  #include <drm/drm_managed.h>
  #include <drm/drm_module.h>
+#include <drm/drm_panic.h>
  #include <drm/drm_pciids.h>
#include "mgag200_drv.h"
@@ -84,6 +86,25 @@ resource_size_t mgag200_probe_vram(void __iomem *mem, 
resource_size_t size)
        return offset - 65536;
  }
+static int mgag200_get_scanout_buffer(struct drm_device *dev,
+                                     struct drm_scanout_buffer *sb)
+{
+       struct drm_plane *plane;
+       struct mga_device *mdev = to_mga_device(dev);
+       struct iosys_map map = IOSYS_MAP_INIT_VADDR_IOMEM(mdev->vram);
+
+       /* find the primary and visible plane */
+       drm_for_each_primary_visible_plane(plane, dev) {
+               sb->format = plane->state->fb->format;
+               sb->width = plane->state->fb->width;
+               sb->height = plane->state->fb->height;
+               sb->pitch = plane->state->fb->pitches[0];
+               sb->map = map;
+               return 0;
+       }
+       return -ENODEV;
+}
+
  /*
   * DRM driver
   */
@@ -99,6 +120,7 @@ static const struct drm_driver mgag200_driver = {
        .major = DRIVER_MAJOR,
        .minor = DRIVER_MINOR,
        .patchlevel = DRIVER_PATCHLEVEL,
+       .get_scanout_buffer = mgag200_get_scanout_buffer,
        DRM_GEM_SHMEM_DRIVER_OPS,
  };

--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)

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