[PATCH v7 6/9] drm/simpledrm: Add drm_panic support

[Thomas Zimmermann]

Am 04.01.24 um 17:00 schrieb Jocelyn Falempe:
> 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>

Reviewed-by: Thomas Zimmermann <tzimmermann at suse.de>

> ---
>   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 7ce1c4617675..6dd2afee84d4 100644
> --- a/drivers/gpu/drm/tiny/simpledrm.c
> +++ b/drivers/gpu/drm/tiny/simpledrm.c
> @@ -25,6 +25,7 @@
>   #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_probe_helper.h>
>   
>   #define DRIVER_NAME	"simpledrm"
> @@ -985,6 +986,19 @@ 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
>    */
> @@ -1000,6 +1014,7 @@ 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,
>   };
>   
>   /*

-- 
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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