On Fri, Sep 19, 2014 at 08:48:49AM -0300, Marcos Paulo de souza wrote: > Hi, > > On 09/19/2014 05:47 AM, Mika Westerberg wrote: > >On Thu, Sep 18, 2014 at 06:02:40PM -0300, Marcos Paulo de souza wrote: > >>Hi, > >> > >>On 09/18/2014 05:49 PM, Hans de Goede wrote: > >>>Hi, > >>> > >>>On 09/18/2014 04:01 PM, Mika Westerberg wrote: > >>>>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. > >>>Interesting. Marcos, can you give this a try please ? > >>Hans, both here returned 0. As I said to you, I'm using Fedora in insecure > >>mode (I don't know if this changes anything). > >That just means that your BIOS has disabled these devices. Unless there > >is a menu somewhere in BIOS setup to enable these, there is nothing we > >can do in the kernel to make them appear. > Interesting. This machine came with Windows 8, and removed. The touchpad was > working on Windows. Mika, I verified my BIOS configurations and there isn't > any configuration to enable PCI devices. Do you beleive there is something > about secure boot? As it worked with Windows, hwo can it be detected on > Linux? Are you sure that your touch pad is connected to I2C bus in the first place? In your ACPI DSDT, there is also a device called PS2M that happens to to look like touch pad to me. For example it reports one of these _HIDs: Method (_HID, 0, NotSerialized) // _HID: Hardware ID { If (SYNA) { Return (0x190A2E4F) } If (ALPS) { Return (0x0713A906) } If (ELAN) { Return (0x08018416) } If (STLC) { Return (0x41C18C4E) } If (FOLT) { Return (0x01019419) } Return (0x060A2E4F) } Have you checked if any of these are present in /sys/bus/acpi/devices/*? > > > >>>>The "status" refers directly shat _STA() ACPI method returns. > >>>Ok, so assuming that Marcos' testing shows it is not enabled, > >>>is there anything we can, could there be some ACPI call to > >>>enable these devs ? > >>> > >>>>Note that the device could also be in PCI mode, in case lspci should > >>>>show it. > >>>Right, it does not show in lspci. > >OK. So I think that this particular machine, either does not have Intel > >LPSS (it is not Haswell-LP) or the devices have been deliberately > >disabled for some reason. > How can I verify this? Can you send me output of lspci -vv? -- 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
