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) + 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, }; -- 2.41.0