Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=158ad3260ba3b006e3c6dfad05298e9d7889c5b1
Commit: 158ad3260ba3b006e3c6dfad05298e9d7889c5b1
Parent: b196884e2f5d45fb505b46011e41ca95e0859e34
Author: Udo A. Steinberg <[EMAIL PROTECTED]>
AuthorDate: Fri Oct 19 20:35:02 2007 +0200
Committer: Thomas Gleixner <[EMAIL PROTECTED]>
CommitDate: Fri Oct 19 20:35:02 2007 +0200
x86: enable HPET on ICH3 and ICH4
ICH3 and ICH4 have undocumented HPET capabilities. This patch enables
HPET for platforms based around these ICHs.
Tested on various ICH3 and ICH4 platforms.
Because HPET is not officially documented for ICH3/4 and may not have
been validated by chipset folks, we're on thin ice here. I'd recommend
testing this patch in -hrt or -mm for a while and wait for
success/failure reports before feeding it upstream.
tglx: depends on the force_hpet command line option !
Signed-off-by: Udo A. Steinberg <[EMAIL PROTECTED]>
Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
Signed-off-by: Thomas Gleixner <[EMAIL PROTECTED]>
---
arch/x86/kernel/quirks.c | 18 ++++++++++++++++++
1 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c
index fbe32e7..a4ce191 100644
--- a/arch/x86/kernel/quirks.c
+++ b/arch/x86/kernel/quirks.c
@@ -236,6 +236,24 @@ static void old_ich_force_enable_hpet(struct pci_dev *dev)
printk(KERN_DEBUG "Failed to force enable HPET\n");
}
+/*
+ * Undocumented chipset features. Make sure that the user enforced
+ * this.
+ */
+static void old_ich_force_enable_hpet_user(struct pci_dev *dev)
+{
+ if (hpet_force_user)
+ old_ich_force_enable_hpet(dev);
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0,
+ old_ich_force_enable_hpet_user);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12,
+ old_ich_force_enable_hpet_user);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0,
+ old_ich_force_enable_hpet_user);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12,
+ old_ich_force_enable_hpet_user);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0,
old_ich_force_enable_hpet);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_12,
-
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