Hi Matthew, 於 一，2010-08-23 於 12:49 +0100，Matthew Garrett 提到： > On Mon, Aug 23, 2010 at 07:40:48PM +0800, Lee, Chun-Yi wrote: > > There have some machines not support by i915 drm driver, e.g. MSI U110/U150, > > there are use poulsbo chip and drm driver not support it because legal issue. > > Those machines's acpi backlight control actually work fine and don't need apply > > the intel opregion support. > > So, add intel drm blacklist to intel_opregion_present, it can enable the acpi > > brightness interface on Poulsbo/Morrestown. > > I'm still kind of reluctant about this - doing the blacklisting here > means that there's no way for a native driver to inhibit registration > from occuring until after opregion setup has taken place, and we found > that that was necessary on some 915 so I suspect it is on gma500 as I read the bug: https://bugzilla.kernel.org/show_bug.cgi?id=11259#c28 And your patch comment: https://patchwork.kernel.org/patch/13147/ I think there have some machines implement _BCL by using opregion, so causes the issues. But, there sill have many machines implement _BCL by using EC to control backlight. Unfortunately, there have no way can detect the difference. > > well. Perhaps it should just be done as a module option, and then > distributions who want to deal with this case could set it by default? > OK, I put a module option also a way to fix the issue for those machines that were implemented acpi method by call EC. I will put a module option in acpi video driver then send to you after testing finished. > > + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRST_VGA_0) }, > > + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRST_VGA_1) }, > > + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRST_VGA_2) }, > > + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRST_VGA_3) }, > > + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRST_VGA_4) }, > > + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRST_VGA_5) }, > > + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRST_VGA_6) }, > > + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRST_VGA_7) }, > > Moorestown doesn't have ACPI, so I don't think there's any need to > include these. > OH! OK, thank's for your review! Joey Lee -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
