Messages in this thread | | | Date | Mon, 3 Nov 2003 00:51:49 -0800 (PST) | From | Dustin Lang <> | Subject | Re:No backlight control on PowerBook G4 |
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Hi Ben,
> You can't expect a machine just released a couple of weeks ago by > Apple to be fully supported by linux, do you ? :)
I'm very impressed at how well things are supported. I had to buy a USB wireless dongle, the Linksys WUSB12 (which works great), thanks to Broadcom's proprietariness about the Airport Extreme, but other than that, almost everything is automagic.
> If it's a new Mobility 9600 machine, then I expect my 2.6 tree > (bk://ppc.bkbits.net/linuxppc-2.5-benh or rsync from source.mvista.com) > to work, though the actual backlight "scale" may not be fully correct > yet.
Actually, it's got a GeForce FX Go 5200.
I just grabbed your 2.6 tree and see the same things happening.
> Unfortunately, there's isn't much HW documentation available for these > babies, other than reading Apple darwin source, Open Firmware forth > code, etc...
Oh joy. I've heard great things about Forth :)
> Regarding overall power management (that is machine sleep), it is not > supported on these machines yet. The blocking factor is the new ATI chip, > which need to be rebooted from scratch. ATI told me they might be able to > send me tables to do that though, so there is hope.
Cool. I think backlight control, drive spindown, and CPU frequency scaling should go a fairly long way on the battery life front. Speaking of CPU scaling, do you know if it should work on this machine? I selected it in the kernel config, but /sys/devices/system/cpu/cpu0 is empty.
Just for reference, /proc/cpuinfo is:
cpu : 7457, altivec supported clock : 999MHz revision : 1.1 (pvr 8002 0101) bogomips : 761.85 machine : PowerBook6,2 motherboard : PowerBook6,2 MacRISC3 Power Macintosh board revision : 00000002 detected as : 287 (Unknown Intrepid-based) pmac flags : 00000008 L2 cache : 512K unified memory : 256MB pmac-generation : NewWorld
Oh, I just noticed something else in dmesg: PMU driver 2 initialized for Core99, firmware: 0c
*shrug*
I grabbed the newest Darwin/xnu source I could find from Apple, and I can no longer find where they do the backlight control - it used to be in iokit/Drivers/platform/drvApplePMU . I'll have to look more closely tomorrow...
Again, many thanks for your work on this platform.
Cheers, dstn. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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