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Code Issues Releases Wiki Activity

drm/hyperv: Handle feature change message from device

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Virtual device inform if screen update is needed or not with
SYNTHVID_FEATURE_CHANGE message. Handle this message to set dirt_needed
flag.

Suggested-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Deepak Rawat <drawat.floss@gmail.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210527112230.1274-2-drawat.floss@gmail.com
This commit is contained in:
Deepak Rawat 2021-05-27 04:22:29 -07:00
parent 76c56a5aff
commit 25bfa95656
3 changed files with 10 additions and 0 deletions
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1
drivers/gpu/drm/hyperv/hyperv_drm.h
View file

@ -29,6 +29,7 @@ struct hyperv_drm_device {
struct completion wait;
u32 synthvid_version;
u32 mmio_megabytes;
bool dirt_needed;
u8 init_buf[VMBUS_MAX_PACKET_SIZE];
u8 recv_buf[VMBUS_MAX_PACKET_SIZE];

2
drivers/gpu/drm/hyperv/hyperv_drm_drv.c
View file

@ -198,6 +198,8 @@ static int hyperv_vmbus_probe(struct hv_device *hdev,
if (ret)
drm_warn(dev, "Failed to update vram location.\n");
hv->dirt_needed = true;
ret = hyperv_mode_config_init(hv);
if (ret)
goto err_vmbus_close;

7
drivers/gpu/drm/hyperv/hyperv_drm_proto.c
View file

@ -301,8 +301,12 @@ int hyperv_update_situation(struct hv_device *hdev, u8 active, u32 bpp,
int hyperv_update_dirt(struct hv_device *hdev, struct drm_rect *rect)
{
struct hyperv_drm_device *hv = hv_get_drvdata(hdev);
struct synthvid_msg msg;
if (!hv->dirt_needed)
return 0;
memset(&msg, 0, sizeof(struct synthvid_msg));
msg.vid_hdr.type = SYNTHVID_DIRT;
@ -387,6 +391,9 @@ static void hyperv_receive_sub(struct hv_device *hdev)
complete(&hv->wait);
return;
}
if (msg->vid_hdr.type == SYNTHVID_FEATURE_CHANGE)
hv->dirt_needed = msg->feature_chg.is_dirt_needed;
}
static void hyperv_receive(void *ctx)