Code:
#include <stdio.h>
#include <fcntl.h>
#include <libdrm/drm.h>
int main()
{
unsigned int fd, num[40], objs[40], props[40], val[40];
struct drm_mode_get_plane_res pres = {0};
struct drm_mode_get_plane plane = {0};
struct drm_set_client_cap cap;
struct drm_mode_atomic atom = {0};
fd = open("/dev/dri/card0", O_RDWR | O_CLOEXEC | O_NONBLOCK);
cap.capability = DRM_CLIENT_CAP_UNIVERSAL_PLANES;
cap.value = 1;
ioctl(fd, DRM_IOCTL_SET_CLIENT_CAP, &cap);
cap.capability = DRM_CLIENT_CAP_ATOMIC;
cap.value = 1;
ioctl(fd, DRM_IOCTL_SET_CLIENT_CAP, &cap);
perror("DRM_IOCTL_SET_CLIENT_CAP");
atom.flags = DRM_MODE_ATOMIC_ALLOW_MODESET;
atom.objs_ptr = (long) objs;
atom.count_props_ptr = num;
atom.props_ptr = props;
atom.prop_values_ptr = val;
ioctl(fd, DRM_IOCTL_MODE_ATOMIC, &atom);
perror("DRM_IOCTL_MODE_ATOMIC");
printf("count_objs :%d\n", atom.count_objs);
close(fd);
return 0;
}
Code:
[email protected] ./test_atomic DRM_IOCTL_SET_CLIENT_CAP: success DRM_IOCTL_MODE_ATOMIC: success count_obj :0 [email protected]
CARD: intel ivybridge mobil linux: 4.5.4
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