Add a new quirk for BIOSes that reprogram regs at lid close/open time

Dell Latitude D500s seem to have this problem.  At lid close/open, the DSPABASE
reg gets reset to 0, so we either need to keep the framebuffer at offset 0 or
make sure we reprogram the CRTCs after the lid opens again.  Since we can't
make sure the former is always true (buffer resize, etc.), this patch adds a
quirk to reset the modes at lid open time.

Fixes FDO bug #14890.

1 files changed, 12 insertions, 0 deletions

diff --git a/src/i830_quirks.c b/src/i830_quirks.c
index 24c96587..aaff753d 100644
--- a/src/i830_quirks.c
+++ b/src/i830_quirks.c
@@ -161,6 +161,15 @@ static void i830_dmi_dump(void)
     DMIID_DUMP(chassis_asset_tag);
 }
 
+/*
+ * Some machines hose the display regs regardless of the ACPI DOS
+ * setting, so we need to reset modes at ACPI event time.
+ */
+static void quirk_reset_modes (I830Ptr pI830)
+{
+    pI830->quirk_flag |= QUIRK_RESET_MODES;
+}
+
 static void quirk_pipea_force (I830Ptr pI830)
 {
     pI830->quirk_flag |= QUIRK_PIPEA_FORCE;
@@ -278,6 +287,9 @@ static i830_quirk i830_quirk_list[] = {
     /* Intel 945GM hardware (See LP: #152416) */
     { PCI_CHIP_I945_GM, 0x1584, 0x9900, quirk_ignore_tv },
 
+    /* Dell Latitude D500 needs reset modes quirk */
+    { PCI_CHIP_I855_GM, 0x1028, 0x0152, quirk_reset_modes },
+
     { 0, 0, 0, NULL },
 };