[PATCH v4 3/4] drm/simpledrm: Add drm_panic support
Jocelyn Falempe
jfalempe at redhat.com
Tue Oct 3 14:22:46 UTC 2023
Add support for the drm_panic module, which displays a user-friendly
message to the screen when a kernel panic occurs.
Signed-off-by: Jocelyn Falempe <jfalempe at redhat.com>
---
drivers/gpu/drm/tiny/simpledrm.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/gpu/drm/tiny/simpledrm.c b/drivers/gpu/drm/tiny/simpledrm.c
index 25e11ef11c4c..ee62303ef68a 100644
--- a/drivers/gpu/drm/tiny/simpledrm.c
+++ b/drivers/gpu/drm/tiny/simpledrm.c
@@ -23,6 +23,7 @@
#include <drm/drm_gem_shmem_helper.h>
#include <drm/drm_managed.h>
#include <drm/drm_modeset_helper_vtables.h>
+#include <drm/drm_panic.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_probe_helper.h>
@@ -842,6 +843,19 @@ static struct simpledrm_device *simpledrm_device_create(struct drm_driver *drv,
return sdev;
}
+static int simpledrm_get_scanout_buffer(struct drm_device *dev,
+ struct drm_scanout_buffer *sb)
+{
+ struct simpledrm_device *sdev = simpledrm_device_of_dev(dev);
+
+ sb->width = sdev->mode.hdisplay;
+ sb->height = sdev->mode.vdisplay;
+ sb->pitch = sdev->pitch;
+ sb->format = sdev->format;
+ sb->map = sdev->screen_base;
+ return 0;
+}
+
/*
* DRM driver
*/
@@ -857,6 +871,7 @@ static struct drm_driver simpledrm_driver = {
.minor = DRIVER_MINOR,
.driver_features = DRIVER_ATOMIC | DRIVER_GEM | DRIVER_MODESET,
.fops = &simpledrm_fops,
+ .get_scanout_buffer = simpledrm_get_scanout_buffer,
};
/*
--
2.41.0
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