Hi Am 03.10.23 um 16:22 schrieb Jocelyn Falempe:
Add support for the drm_panic module, which displays a message to the screen when a kernel panic occurs. Signed-off-by: Jocelyn Falempe <jfalempe@xxxxxxxxxx> --- drivers/gpu/drm/mgag200/mgag200_drv.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.c b/drivers/gpu/drm/mgag200/mgag200_drv.c index 976f0ab2006b..229d9c116b42 100644 --- a/drivers/gpu/drm/mgag200/mgag200_drv.c +++ b/drivers/gpu/drm/mgag200/mgag200_drv.c @@ -12,10 +12,12 @@ #include <drm/drm_aperture.h> #include <drm/drm_drv.h> #include <drm/drm_fbdev_generic.h> +#include <drm/drm_framebuffer.h> #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"@@ -83,6 +85,27 @@ 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); + + /* mgag200 has only one plane */ + drm_for_each_plane(plane, dev) { + if (!plane->state || !plane->state->fb)
Better test for plane->state->visible. You should also check if it's a primary plane.
Best regards Thomas
+ return -ENODEV;
+ 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
*/
@@ -98,6 +121,7 @@ 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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