video: hyperv_fb: Add the support of hibernation (1ecf3020) · Commits · 戴 / test

drivers/video/fbdev/hyperv_fb.c

+59 −0

Original line number	Diff line number	Diff line
		@@ -34,6 +34,7 @@
		#include <linux/fb.h>
		#include <linux/pci.h>
		#include <linux/efi.h>
		#include <linux/console.h>

		#include <linux/hyperv.h>

		@@ -211,6 +212,7 @@ struct hvfb_par {

		struct delayed_work dwork;
		bool update;
		bool update_saved; /* The value of 'update' before hibernation */

		u32 pseudo_palette[16];
		u8 init_buf[MAX_VMBUS_PKT_SIZE];
		@@ -878,6 +880,61 @@ static int hvfb_remove(struct hv_device *hdev)
		return 0;
		}

		static int hvfb_suspend(struct hv_device *hdev)
		{
		struct fb_info *info = hv_get_drvdata(hdev);
		struct hvfb_par *par = info->par;

		console_lock();

		/* 1 means do suspend */
		fb_set_suspend(info, 1);

		cancel_delayed_work_sync(&par->dwork);

		par->update_saved = par->update;
		par->update = false;
		par->fb_ready = false;

		vmbus_close(hdev->channel);

		console_unlock();

		return 0;
		}

		static int hvfb_resume(struct hv_device *hdev)
		{
		struct fb_info *info = hv_get_drvdata(hdev);
		struct hvfb_par *par = info->par;
		int ret;

		console_lock();

		ret = synthvid_connect_vsp(hdev);
		if (ret != 0)
		goto out;

		ret = synthvid_send_config(hdev);
		if (ret != 0) {
		vmbus_close(hdev->channel);
		goto out;
		}

		par->fb_ready = true;
		par->update = par->update_saved;

		schedule_delayed_work(&par->dwork, HVFB_UPDATE_DELAY);

		/* 0 means do resume */
		fb_set_suspend(info, 0);

		out:
		console_unlock();

		return ret;
		}


		static const struct pci_device_id pci_stub_id_table[] = {
		{
		@@ -901,6 +958,8 @@ static struct hv_driver hvfb_drv = {
		.id_table = id_table,
		.probe = hvfb_probe,
		.remove = hvfb_remove,
		.suspend = hvfb_suspend,
		.resume = hvfb_resume,
		.driver = {
		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
		},

Admin message