[PATCH 2/3] virtio-gpu: add VIRTIO_GPU_F_EDID feature
From: Gerd Hoffmann <kraxel@redhat.com>
Date: 2018-09-13 08:12:57
Subsystem:
the rest, virtio core, virtio gpu driver · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang, David Airlie, Gerd Hoffmann, Dmitry Osipenko
The feature allows the guest request an EDID blob (describing monitor capabilities) for a given scanout (aka virtual monitor connector). It brings a new command message, which has just a scanout field (beside the standard virtio-gpu header) and a response message which carries the EDID data. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> --- include/uapi/linux/virtio_gpu.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/include/uapi/linux/virtio_gpu.h b/include/uapi/linux/virtio_gpu.h
index f43c3c6171..7267c3d2d6 100644
--- a/include/uapi/linux/virtio_gpu.h
+++ b/include/uapi/linux/virtio_gpu.h@@ -41,6 +41,7 @@ #include <linux/types.h> #define VIRTIO_GPU_F_VIRGL 0 +#define VIRTIO_GPU_F_EDID 1 enum virtio_gpu_ctrl_type { VIRTIO_GPU_UNDEFINED = 0,
@@ -56,6 +57,7 @@ enum virtio_gpu_ctrl_type { VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING, VIRTIO_GPU_CMD_GET_CAPSET_INFO, VIRTIO_GPU_CMD_GET_CAPSET, + VIRTIO_GPU_CMD_GET_EDID, /* 3d commands */ VIRTIO_GPU_CMD_CTX_CREATE = 0x0200,
@@ -76,6 +78,7 @@ enum virtio_gpu_ctrl_type { VIRTIO_GPU_RESP_OK_DISPLAY_INFO, VIRTIO_GPU_RESP_OK_CAPSET_INFO, VIRTIO_GPU_RESP_OK_CAPSET, + VIRTIO_GPU_RESP_OK_EDID, /* error responses */ VIRTIO_GPU_RESP_ERR_UNSPEC = 0x1200,
@@ -291,6 +294,20 @@ struct virtio_gpu_resp_capset { __u8 capset_data[]; }; +/* VIRTIO_GPU_CMD_GET_EDID */ +struct virtio_gpu_get_edid { + struct virtio_gpu_ctrl_hdr hdr; + __le32 scanout; +}; + +/* VIRTIO_GPU_RESP_OK_EDID */ +struct virtio_gpu_resp_edid { + struct virtio_gpu_ctrl_hdr hdr; + __le32 scanout; + __le32 size; + __u8 edid[512]; +}; + #define VIRTIO_GPU_EVENT_DISPLAY (1 << 0) struct virtio_gpu_config {
--
2.9.3