summaryrefslogtreecommitdiff
path: root/arch/x86/kernel/early-quirks.c
diff options
context:
space:
mode:
authorDave Airlie <airlied@redhat.com>2010-08-02 10:24:46 +1000
committerDave Airlie <airlied@redhat.com>2010-08-02 10:24:46 +1000
commit7827627107aeb629f1a056cb56b17bd4fb789e03 (patch)
treecbd83582abb9120c7ef724bf439916c8bf864e37 /arch/x86/kernel/early-quirks.c
parente190bfe56841551b1ad5abb42ebd0c4798cc8c01 (diff)
parent219de62a1627247fca10789f28902f66cb0b408f (diff)
downloadlinux-7827627107aeb629f1a056cb56b17bd4fb789e03.tar.gz
Merge branch 'drm-radeon-next' of ../drm-radeon-next into drm-core-next
* 'drm-radeon-next' of ../drm-radeon-next: (333 commits) drm/radeon/kms: trivial code style fixes for audio drm/radeon: remove viewport transform from r6xx/r7xx blit emit drm/radeon: group r6xx/r7xx newly sequential blit state drm/radeon: reorder r6xx/r7xx blit state emit to make more regs sequential drm/radeon: r6xx/r7xx move vport clipping to a single packet drm/radeon: group r6xx/r7xx sequential blit state drm/radeon: remove duplicate state emit in r6xx/r7xx blit drm/radeon: add comments to r6xx/r7xx blit state drm/radeon/kms/r7xx: add workaround for hw issue with HDP flush drm/radeon/kms: remove rs4xx gart limit drm: radeon: fix sign bug drm/radeon/kms: check/restore sanity before doing anything else with GPU. drm/radeon: fall back to GTT if bo creation/validation in VRAM fails. drm/radeon/kms: add ioport register access drm/radeon/kms: enable HDMI audio on RS600/RS690/RS740 drm/radeon/kms: track audio engine state, do not use not setup timer drm/radeon/kms/r6xx+: add query for tile config (v2) drm/radeon/kms: fix CS alignment checking for tiling (v2) drm/radeon/kms: add tiling support to the cs checker for r6xx/r7xx drm/radeon/kms: Add crtc tiling setup support for evergreen ...
Diffstat (limited to 'arch/x86/kernel/early-quirks.c')
-rw-r--r--arch/x86/kernel/early-quirks.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index ebdb85cf2686..e5cc7e82e60d 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -18,6 +18,7 @@
#include <asm/apic.h>
#include <asm/iommu.h>
#include <asm/gart.h>
+#include <asm/hpet.h>
static void __init fix_hypertransport_config(int num, int slot, int func)
{
@@ -191,6 +192,21 @@ static void __init ati_bugs_contd(int num, int slot, int func)
}
#endif
+/*
+ * Force the read back of the CMP register in hpet_next_event()
+ * to work around the problem that the CMP register write seems to be
+ * delayed. See hpet_next_event() for details.
+ *
+ * We do this on all SMBUS incarnations for now until we have more
+ * information about the affected chipsets.
+ */
+static void __init ati_hpet_bugs(int num, int slot, int func)
+{
+#ifdef CONFIG_HPET_TIMER
+ hpet_readback_cmp = 1;
+#endif
+}
+
#define QFLAG_APPLY_ONCE 0x1
#define QFLAG_APPLIED 0x2
#define QFLAG_DONE (QFLAG_APPLY_ONCE|QFLAG_APPLIED)
@@ -220,6 +236,8 @@ static struct chipset early_qrk[] __initdata = {
PCI_CLASS_SERIAL_SMBUS, PCI_ANY_ID, 0, ati_bugs },
{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
PCI_CLASS_SERIAL_SMBUS, PCI_ANY_ID, 0, ati_bugs_contd },
+ { PCI_VENDOR_ID_ATI, PCI_ANY_ID,
+ PCI_CLASS_SERIAL_SMBUS, PCI_ANY_ID, 0, ati_hpet_bugs },
{}
};