From: R.Marek@sh.cvut.cz Date: Thu, 29 Sep 2005 08:35:41 +0000 (+0000) Subject: [PATCH] unhide ICH6 SMBus - take 2 X-Git-Tag: v2.6.15-rc1~731^2~22^2~22 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=acc06632e387fd05d2bf3480f6a2f4d1a62734b8;p=linux-2.6 [PATCH] unhide ICH6 SMBus - take 2 This patch unhides hidden SMBus on ICH6 chipset installed in Asus M6V notebook. I would like to thank Michal Mleczko for testing and help. Signed-Off-By: Rudolf Marek Signed-off-by: Greg Kroah-Hartman drivers/pci/quirks.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) --- diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 0663428a0e..e1bd169cf5 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -934,6 +934,12 @@ static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev) case 0x186a: /* M6Ne notebook */ asus_hides_smbus = 1; } + if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB) { + switch (dev->subsystem_device) { + case 0x1882: /* M6V notebook */ + asus_hides_smbus = 1; + } + } } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) { if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) switch(dev->subsystem_device) { @@ -978,6 +984,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge ); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge ); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge ); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge ); static void __init asus_hides_smbus_lpc(struct pci_dev *dev) { @@ -1002,6 +1009,23 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, as DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc ); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc ); +static void __init asus_hides_smbus_lpc_ich6(struct pci_dev *dev) +{ + u32 val, rcba; + void __iomem *base; + + if (likely(!asus_hides_smbus)) + return; + pci_read_config_dword(dev, 0xF0, &rcba); + base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000); /* use bits 31:14, 16 kB aligned */ + if (base == NULL) return; + val=readl(base + 0x3418); /* read the Function Disable register, dword mode only */ + writel(val & 0xFFFFFFF7, base + 0x3418); /* enable the SMBus device */ + iounmap(base); + printk(KERN_INFO "PCI: Enabled ICH6/i801 SMBus device\n"); +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6 ); + /* * SiS 96x south bridge: BIOS typically hides SMBus device... */