From: Ben Skeggs bskeggs@redhat.com
Signed-off-by: Ben Skeggs bskeggs@redhat.com --- include/drm/drm.h | 7 +++++++ xf86drm.c | 9 +++++++++ xf86drm.h | 1 + 3 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/include/drm/drm.h b/include/drm/drm.h index 2ba7136..fd06c2a 100644 --- a/include/drm/drm.h +++ b/include/drm/drm.h @@ -612,6 +612,12 @@ struct drm_gem_open { __u64 size; };
+/** DRM_IOCTL_GET_CAP ioctl argument type */ +struct drm_get_cap { + __u64 capability; + __u64 value; +}; + #include "drm_mode.h"
#define DRM_IOCTL_BASE 'd' @@ -632,6 +638,7 @@ struct drm_gem_open { #define DRM_IOCTL_GEM_CLOSE DRM_IOW (0x09, struct drm_gem_close) #define DRM_IOCTL_GEM_FLINK DRM_IOWR(0x0a, struct drm_gem_flink) #define DRM_IOCTL_GEM_OPEN DRM_IOWR(0x0b, struct drm_gem_open) +#define DRM_IOCTL_GET_CAP DRM_IOWR(0x0c, struct drm_get_cap)
#define DRM_IOCTL_SET_UNIQUE DRM_IOW( 0x10, struct drm_unique) #define DRM_IOCTL_AUTH_MAGIC DRM_IOW( 0x11, struct drm_auth) diff --git a/xf86drm.c b/xf86drm.c index 799fcdd..5b060c9 100644 --- a/xf86drm.c +++ b/xf86drm.c @@ -810,6 +810,15 @@ drmVersionPtr drmGetLibVersion(int fd) return (drmVersionPtr)version; }
+uint64_t drmGetCap(int fd, uint64_t capability) +{ + struct drm_get_cap cap = { capability, 0 }; + + if (drmIoctl(fd, DRM_IOCTL_GET_CAP, &cap)) + return 0; + + return cap.value; +}
/** * Free the bus ID information. diff --git a/xf86drm.h b/xf86drm.h index 9b89f56..1c87b7f 100644 --- a/xf86drm.h +++ b/xf86drm.h @@ -542,6 +542,7 @@ extern int drmOpenControl(int minor); extern int drmClose(int fd); extern drmVersionPtr drmGetVersion(int fd); extern drmVersionPtr drmGetLibVersion(int fd); +extern uint64_t drmGetCap(int fd, uint64_t capability); extern void drmFreeVersion(drmVersionPtr); extern int drmGetMagic(int fd, drm_magic_t * magic); extern char *drmGetBusid(int fd);