bora.sahin at ttnet.net.tr
Fri Jun 17 08:52:35 PDT 2005
Friday, June 17, 2005, 4:18:40 PM, you wrote:
Egbert> Bora Sahin writes:
>> Egbert> No - with vbe it could be done pretty generically. Howerver vbe requires
>> Egbert> structures set up by the driver.
>> Then, dont he use xf86DoEDID_DDC2() after loading I2C module? For example I did in a PPC based
>> system and as it seems it works...
>> if (pSmi->I2C)
>> xf86SetDDCproperties(pScrn, xf86PrintEDID(xf86DoEDID_DDC2(pScrn->scrnIndex, pSmi->I2C)));
Egbert> You only need the I2C module for DDC when you don't go thru the VESA BIOS.
Egbert> On most PPC platforms (those with open firmware) this will not work, though. So you either
Egbert> need an open firmware interface
My PPC cpu is an embedded one: 405EP and firmware is U-Boot.
Egbert> or you need to write the chipset specific part to bang the i2c lines.
Yes, I think you mean I2CPtr->I2CPutBits & I2CPtr->I2CGetBits for clock an data. The driver I
use(Silicon Motion) sets this functions correctly.
So when we come to the original poster's question, if I dont understand the subject wrongly, he can
do DDC just using libddc.a after loading and setting I2C?
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