As the Soekris net6501 and other e6xx based systems do not have
any ACPI implementation, HPET won't get enabled.
This patch enables HPET on such platforms.
[ 0.430149] pci 0000:00:01.0: Force enabled HPET at 0xfed00000
[ 0.644838] HPET: 3 timers in total, 0 timers will be used for per-cpu timer
Original patch by Peter Neubauer (http://www.mail-archive.com/soekris-tech@lists.soekris.com/msg06462.html)
slightly modified by Conrad Kostecki <ck@conrad-kostecki.de> and massaged
accoring to Thomas Gleixners <tglx@linutronix.de> by me.
Suggested-by: Conrad Kostecki <ck@conrad-kostecki.de>
Signed-off-by: Eric Sesterhenn <eric.sesterhenn@lsexperts.de>
Cc: Peter Neubauer <pneubauer@bluerwhite.org>
Link: http://lkml.kernel.org/r/5412D3A5.2030909@lsexperts.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
}
}
+/*
+ * According to the datasheet e6xx systems have the HPET hardwired to
+ * 0xfed00000
+ */
+static void e6xx_force_enable_hpet(struct pci_dev *dev)
+{
+ if (hpet_address || force_hpet_address)
+ return;
+
+ force_hpet_address = 0xFED00000;
+ force_hpet_resume_type = NONE_FORCE_HPET_RESUME;
+ dev_printk(KERN_DEBUG, &dev->dev, "Force enabled HPET at "
+ "0x%lx\n", force_hpet_address);
+ return;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E6XX_CU,
+ e6xx_force_enable_hpet);
+
/*
* HPET MSI on some boards (ATI SB700/SB800) has side effect on
* floppy DMA. Disable HPET MSI on such platforms.
#define PCI_DEVICE_ID_INTEL_82372FB_1 0x7601
#define PCI_DEVICE_ID_INTEL_SCH_LPC 0x8119
#define PCI_DEVICE_ID_INTEL_SCH_IDE 0x811a
+#define PCI_DEVICE_ID_INTEL_E6XX_CU 0x8183
#define PCI_DEVICE_ID_INTEL_ITC_LPC 0x8186
#define PCI_DEVICE_ID_INTEL_82454GX 0x84c4
#define PCI_DEVICE_ID_INTEL_82450GX 0x84c5