patch: HPET force enable for CX700 / VIA Epia LT was: Re: hpet timersgone?

From: Udo van den Heuvel
Date: Tue Sep 14 2010 - 01:15:20 EST


On 2010-09-14 01:16, Robert Hancock wrote:
> On Mon, Sep 13, 2010 at 8:52 AM, Udo van den Heuvel <udovdh@xxxxxxxxx> wrote:
>> So what else can I do to enable HPET?
>
> At this point, not much, unless you can track down the chipset
> information that would allow us to implement force enabling HPET on
> that chipset..

Signed-off-by: Udo van den Heuvel <udovdh@xxxxxxxxx>

--- a/arch/x86/kernel/quirks.c 2010-09-13 18:02:14.639710309 +0200
+++ b/arch/x86/kernel/quirks.c 2010-09-13 18:02:06.095280815 +0200
@@ -344,6 +344,8 @@
vt8237_force_enable_hpet);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237,
vt8237_force_enable_hpet);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_CX700,
+ vt8237_force_enable_hpet);

static void ati_force_hpet_resume(void)
{

Patch does make hpet appear on VIA Epia LT (CX700M2 chipset) with
hpet=force on kernel commandline.


Udo
--- a/arch/x86/kernel/quirks.c 2010-09-13 18:02:14.639710309 +0200
+++ b/arch/x86/kernel/quirks.c 2010-09-13 18:02:06.095280815 +0200
@@ -344,6 +344,8 @@
vt8237_force_enable_hpet);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237,
vt8237_force_enable_hpet);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_CX700,
+ vt8237_force_enable_hpet);

static void ati_force_hpet_resume(void)
{