Added support for the nofb and pci_save HAL quirks.

Right now there are no entries in any of the .fdi files that specify use of
these quirks, which is why they were probably never implemented in pm-utils.

1 files changed, 37 insertions, 1 deletions

diff --git a/pm/sleep.d/99video b/pm/sleep.d/99video
index b927a1b..dc8590a 100755
--- a/pm/sleep.d/99video
+++ b/pm/sleep.d/99video
@@ -26,6 +26,8 @@ for opt in $PM_CMDLINE; do
 		vbemode-restore)   QUIRK_VBEMODE_RESTORE="true" ;;
 		vbestate-restore)  QUIRK_VBESTATE_RESTORE="true" ;;
 		vga-mode3) 	   QUIRK_VGA_MODE_3="true" ;;
+		no-fb) 		   QUIRK_NOFB="true" ;;
+		pci-save) 	   QUIRK_PCI_SAVE="true" ;;
 		none) 		   QUIRK_NONE="true" ;;
 		*) continue ;;
 	esac
@@ -53,6 +55,15 @@ else
 	radeon() { echo "radeontool not found" 1>&2; return 1; }
 fi
 
+die_if_framebuffer() 
+{ 
+	[ -d "/sys/class/graphics/fb0" ] || return
+	echo "--quirk-no-fb passed, but system is using a framebuffer."
+	echo "Aborting."
+	exit 1
+}
+
+
 save_fbcon()
 {
 	local con
@@ -105,6 +116,28 @@ vbe_post()
 radeon_off() { radeon dac off; radeon light off; }
 radeon_on() { radeon dac on; radeon light on; }
 
+# save and restore video card PCI config state
+save_pci() 
+{
+	local pci="/sys/bus/pci/devices"
+	for dev in "${pci}"/*; do
+		[ -f "${dev}/class" ] || continue
+		[ $(cat "${dev}/class") = "0x030000" ] || continue
+		[ -f "${dev}/config" ] || continue
+		# it is a video card, it has a configuration.  Save it.
+		savestate "pci_video_${dev##*/}" <${dev}/config
+	done
+}
+
+restore_pci() 
+{
+	local pci="/sys/bus/pci/devices"
+	for dev in "${pci}"/*; do
+		state_exists "pci_video_${dev##*/}" || continue
+		restorestate "pci_video_${dev##*/}" > "${dev}/config"
+	done
+}
+
 suspend_video()
 {
 	# 0=nothing, 1=s3_bios, 2=s3_mode, 3=both
@@ -113,16 +146,19 @@ suspend_video()
 	quirk "${QUIRK_S3_MODE}" && 		acpi_flag=$(($acpi_flag + 2))
 	[ 0 -ne $acpi_flag ] && sysctl -w kernel.acpi_video_flags=$acpi_flag
 	
+	quirk "${QUIRK_NOFB}" && 		die_if_framebuffer
 	quirk "${QUIRK_VBESTATE_RESTORE}" && 	vbe_savestate
 	quirk "${QUIRK_VBEMODE_RESTORE}" && 	vbe_savemode
 	quirk "${QUIRK_RADEON_OFF}" && 		radeon_off
+	quirk "${QUIRK_PCI_SAVE}" && 		pci_save
 	quirk "${QUIRK_VGA_MODE_3}" && 		vbe vbemode set 3
 	quirk "${QUIRK_DPMS_SUSPEND}" && 	vbe dpms suspend
-	save_fbcon # there should be a quirk, but HAL does not pass it.
+	save_fbcon
 }
 resume_video()
 {
 	# We might need to do one or many of these quirks
+	quirk "${QUIRK_PCI_SAVE}" && 		pci_restore
 	quirk "${QUIRK_VBE_POST}" && 		vbe_post
 	quirk "${QUIRK_VBESTATE_RESTORE}" && 	vbe_restorestate
 	quirk "${QUIRK_VBEMODE_RESTORE}" && 	vbe_restoremode