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a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=2i0TtoMANsDUuR3gA1tMLi1H40lAHbI+cepHWyW1JFY=; b=RpJbnd3o1DAkH5qeX+QTwQJyLEgH/4WuSX7cW9tC2j/p+Sz0iwK9sZv+0glAE4v08iin/ottFUPDpyxxLZ4Lu0cKHFvbZr4p/ohuJp5R23Ay26eUpRuP6UtEuHkH8PrlmRsUv7q34w2DpKab29Z+O1ji/qQxuPY5TG6wZY8bXZY= X-Mailman-Original-Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=decui@microsoft.com; X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Dexuan Cui Cc: Dexuan Cui Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This patch depends on the vmbus side change of the definition of struct hv_driver. Signed-off-by: Dexuan Cui --- This patch is basically a pure Hyper-V specific change and it has a build dependency on the commit 271b2224d42f ("Drivers: hv: vmbus: Implement suspend/resume for VSC drivers for hibernation"), which is on Sasha Levin's Hyper-V tree's hyperv-next branch: https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git/log/?h=hyperv-next I request this patch should go through Sasha's tree rather than the fbdev tree. drivers/video/fbdev/hyperv_fb.c | 59 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) diff --git a/drivers/video/fbdev/hyperv_fb.c b/drivers/video/fbdev/hyperv_fb.c index 2dcb7c5..fe4731f 100644 --- a/drivers/video/fbdev/hyperv_fb.c +++ b/drivers/video/fbdev/hyperv_fb.c @@ -34,6 +34,7 @@ #include #include #include +#include #include @@ -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 int hvfb_remove(struct hv_device *hdev) .id_table = id_table, .probe = hvfb_probe, .remove = hvfb_remove, + .suspend = hvfb_suspend, + .resume = hvfb_resume, .driver = { .probe_type = PROBE_PREFER_ASYNCHRONOUS, },