* [PATCH v3] virtio-gpu: add VIRTIO_GPU_F_EDID feature
[not found] <20181018063946.22919-1-kraxel@redhat.com>
@ 2018-10-18 6:39 ` Gerd Hoffmann
0 siblings, 0 replies; only message in thread
From: Gerd Hoffmann @ 2018-10-18 6:39 UTC (permalink / raw)
To: Michael S. Tsirkin
Cc: dri-devel, virtio-dev, Gerd Hoffmann, David Airlie, Jason Wang,
open list:VIRTIO GPU DRIVER, open list
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>
Reviewed-by: Dave Airlie <airlied@redhat.com>
---
include/uapi/linux/virtio_gpu.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/include/uapi/linux/virtio_gpu.h b/include/uapi/linux/virtio_gpu.h
index f43c3c6171..68198691a6 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 +294,19 @@ struct virtio_gpu_resp_capset {
__u8 capset_data[];
};
+/* VIRTIO_GPU_CMD_GET_EDID */
+struct virtio_gpu_cmd_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 size;
+ __u8 edid[1024];
+};
+
#define VIRTIO_GPU_EVENT_DISPLAY (1 << 0)
struct virtio_gpu_config {
--
2.9.3
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