Commit 25bfa956 authored by Deepak Rawat's avatar Deepak Rawat
Browse files

drm/hyperv: Handle feature change message from device 



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: default avatarDexuan Cui <decui@microsoft.com>
Signed-off-by: default avatarDeepak Rawat <drawat.floss@gmail.com>
Acked-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210527112230.1274-2-drawat.floss@gmail.com
parent 76c56a5a

drivers/gpu/drm/hyperv/hyperv_drm.h

+1 −0
Original line number Diff line number Diff line
@@ -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];

drivers/gpu/drm/hyperv/hyperv_drm_drv.c

+2 −0
Original line number Diff line number Diff line
@@ -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;

drivers/gpu/drm/hyperv/hyperv_drm_proto.c

+7 −0
Original line number Diff line number Diff line
@@ -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)