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[RFC,04/14] bootsplash: Redraw on suspend/hibernate

Message ID 20171025124602.28292-5-mstaudt@suse.de (mailing list archive)
State New, archived
Headers show

Commit Message

'Max Staudt Oct. 25, 2017, 12:45 p.m. UTC 
When the system is woken from sleep or restored after hibernating, we
cannot expect the screen contents to still be present in VRAM. Thus,
we have to redraw the splash if we're currently active.

Signed-off-by: Max Staudt <mstaudt@suse.de>
Reviewed-by: Oliver Neukum <oneukum@suse.com>
---
 drivers/video/fbdev/core/bootsplash.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
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Patch

diff --git a/drivers/video/fbdev/core/bootsplash.c b/drivers/video/fbdev/core/bootsplash.c
index 8f1c1c165401..e98c05dd8bc0 100644
--- a/drivers/video/fbdev/core/bootsplash.c
+++ b/drivers/video/fbdev/core/bootsplash.c
@@ -242,9 +242,31 @@  static struct attribute *splash_dev_attrs[] = {
 ATTRIBUTE_GROUPS(splash_dev);
 
 
+
+
+/*
+ * Power management fixup via platform device
+ */
+
+static int splash_resume(struct device *device)
+{
+	if (bootsplash_would_render_now())
+		queue_work(splash_global.wq, &splash_work_redraw_vc);
+
+	return 0;
+}
+
+
+static const struct dev_pm_ops splash_pm_ops = {
+	.thaw = splash_resume,
+	.restore = splash_resume,
+	.resume = splash_resume,
+};
+
 static struct platform_driver splash_driver = {
 	.driver = {
 		.name = "bootsplash",
+		.pm = &splash_pm_ops,
 	},
 };