On Thu, Sep 18, 2014 at 02:04:11PM +0200, Hans de Goede wrote: > Hi, > > I'm trying to help various users with Asus X450 and Asus X550 laptops > to get their touchpad to work: > > https://bugzilla.redhat.com/show_bug.cgi?id=1110011 > > We believe that this touchpad is connected over i2c, using the > i2c-designware-platform driver. > > If you look at the DSDT attached there you can clearly see > nodes defines which should lead to e.g. : > > /sys/bus/platform/devices/INT33C2:00 > > Showing up (which should then be bound by i2c-designware-platform). > > But nothing is showing up, not a single ACPI defined device shows > up actually: > > > > > > [root@asusx550 devices]# ll > insgesamt 0 > lrwxrwxrwx. 1 root root 0 22. Jul 14:56 alarmtimer -> ../../../devices/platform/alarmtimer > lrwxrwxrwx. 1 root root 0 25. Jul 23:54 asus-nb-wmi -> ../../../devices/platform/asus-nb-wmi > lrwxrwxrwx. 1 root root 0 25. Jul 23:54 coretemp.0 -> ../../../devices/platform/coretemp.0 > lrwxrwxrwx. 1 root root 0 22. Jul 14:56 efi-framebuffer.0 -> ../../../devices/platform/efi-framebuffer.0 > lrwxrwxrwx. 1 root root 0 22. Jul 14:56 Fixed MDIO bus.0 -> ../../../devices/platform/Fixed MDIO bus.0 > lrwxrwxrwx. 1 root root 0 22. Jul 14:56 i8042 -> ../../../devices/platform/i8042 > lrwxrwxrwx. 1 root root 0 25. Jul 23:54 iTCO_wdt -> ../../../devices/pci0000:00/0000:00:1f.0/iTCO_wdt > lrwxrwxrwx. 1 root root 0 25. Jul 23:54 microcode -> ../../../devices/platform/microcode > lrwxrwxrwx. 1 root root 0 22. Jul 14:56 pcspkr -> ../../../devices/platform/pcspkr > lrwxrwxrwx. 1 root root 0 25. Jul 23:54 regulatory.0 -> ../../../devices/platform/regulatory.0 > lrwxrwxrwx. 1 root root 0 25. Jul 23:54 rtsx_pci_ms.0 -> ../../../devices/pci0000:00/0000:00:1c.2/0000:02:00.0/rtsx_pci_ms.0 > lrwxrwxrwx. 1 root root 0 25. Jul 23:54 rtsx_pci_sdmmc.0 -> ../../../devices/pci0000:00/0000:00:1c.2/0000:02:00.0/rtsx_pci_sdmmc.0 > lrwxrwxrwx. 1 root root 0 22. Jul 14:56 serial8250 -> ../../../devices/platform/serial8250 > > > Which is weird, since any recent machine usually has at least one or 2 > show up. It depends whether the BIOS has enabled those or not. If # cat /sys/bus/acpi/devices/INT33C2:00/status # cat /sys/bus/acpi/devices/INT33C3:00/status returns 0xf, then the device should be there, otherwise it is not. The "status" refers directly shat _STA() ACPI method returns. Note that the device could also be in PCI mode, in case lspci should show it. -- 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
