We can't expect userspace to have full support for all HDMI 2.0+ features. Instead of expecting/waiting for userspace to support the new features add a knob, much like the stereo knob, so that DRM core will only expose the features when asked too.
Signed-off-by: Jose Abreu <joab...@synopsys.com> Cc: Carlos Palminha <palmi...@synopsys.com> Cc: dri-devel@lists.freedesktop.org --- drivers/gpu/drm/drm_ioctl.c | 5 +++++ include/drm/drm_file.h | 8 ++++++++ include/uapi/drm/drm.h | 7 +++++++ 3 files changed, 20 insertions(+) diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index a7c61c2..2430e2e 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -318,6 +318,11 @@ static int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_ file_priv->atomic = req->value; file_priv->universal_planes = req->value; break; + case DRM_CLIENT_CAP_HDMI2: + if (req->value > 1) + return -EINVAL; + file_priv->hdmi2_allowed = req->value; + break; default: return -EINVAL; } diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h index 5dd27ae..7b97d85 100644 --- a/include/drm/drm_file.h +++ b/include/drm/drm_file.h @@ -192,6 +192,14 @@ struct drm_file { unsigned is_master:1; /** + * @hdmi2_allowed: + * + * True if client understands HDMI 2.0+ features like, for example, + * extended aspect ratios + */ + unsigned hdmi2_allowed:1; + + /** * @master: * * Master this node is currently associated with. Only relevant if diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h index b2c5284..9e25138 100644 --- a/include/uapi/drm/drm.h +++ b/include/uapi/drm/drm.h @@ -678,6 +678,13 @@ struct drm_get_cap { */ #define DRM_CLIENT_CAP_ATOMIC 3 +/** + * DRM_CLIENT_CAP_HDMI2 + * + * If set to 1, the DRM core will expose HDMI 2.0+ features to userspace + */ +#define DRM_CLIENT_CAP_HDMI2 4 + /** DRM_IOCTL_SET_CLIENT_CAP ioctl argument type */ struct drm_set_client_cap { __u64 capability; -- 1.9.1 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel