Q: 'MacModel' replacement for radeon driver?

[Alex Deucher]

On Fri, Dec 21, 2012 at 10:17 AM, Albrecht Dreß <albrecht.dress at arcor.de> wrote:
> Hi Alex!
>
> Am 20.12.12 22:42 schrieb(en) Alex Deucher:
>
>> Apple cards have a proprietary rom without that information so we need to
>> hard code it in the driver.
>
>
> I see.  And OS X relies on that, so it doesn't work with standard cards...
> bad!
>
>
>> It would be great if you could test both connectors to make sure I got the
>> ddc lines mapped correctly (make sure you can get an edid from the monitor).
>
>
> I tested only with the ADC first; I'll have to find a device with a vga
> input...
>
>
>> I've included several options in the patch for each connector, e.g.,
>> +               /* DVI-I - tv dac, int tmds */
>> +               ddc_i2c = combios_setup_i2c_bus(rdev, DDC_CRT2, 0, 0);
>
>
> Does not read any edid data, and ejects with 'Screen(s) found, but none have
> a usable configuration'.  The tft is disabled (put to sleep mode), as the
> failsafe config cannot open the fb device (disabled in the kernel).
>
>
>> +               //ddc_i2c = combios_setup_i2c_bus(rdev, DDC_DVI, 0, 0);
>
>
> Here edid data is read, the log says all is perfect (I think), and the tft
> is activated, but apparently the output signal is not applied.  I.e. I again
> see the shades/lines/pixels...

Ok, it's definitely DDC_DVI.  There's a chance apple used external
tmds, but I doubt it.  You can try the attached patch.  I suspect
internal tmds support may just be broken in the driver for some
setups.  I haven't tested an r1xx card in a while.

Alex

>
>
>> +               //ddc_i2c = combios_setup_i2c_bus(rdev, DDC_VGA, 0, 0);
>> +               //ddc_i2c = combios_setup_i2c_bus(rdev, DDC_MONID, 0, 0);
>
>
> These two behave exactly like DDC_CRT2.
>
> I attach the dmesg output and the X logs for all four cases.
>
> Thanks again,
> Albrecht.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0001-drm-radeon-add-connector-table-for-Mac-G4-Silver-v2.patch
Type: text/x-patch
Size: 3780 bytes
Desc: not available
URL: <http://lists.x.org/archives/xorg-driver-ati/attachments/20121221/4575f8ab/attachment.bin>