Re: Finding PCI device register values through KEXT and user App.
Re: Finding PCI device register values through KEXT and user App.
- Subject: Re: Finding PCI device register values through KEXT and user App.
- From: Jason Seng <email@hidden>
- Date: Mon, 14 May 2007 10:25:41 -0700
Hi Rohit,------------------------------
Message: 2 Date: Sun, 13 May 2007 23:58:14 +0530 From: "rohit dhamija" <email@hidden> Subject: Finding PCI device register values through KEXT and user App. To: "Darwin Kernel" <email@hidden> Message-ID: <email@hidden">email@hidden> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Dear all,
I have developed a kernel extension module for a monitor calibration tool. The prime responsibilty of this module is to communicate to graphics card which in turn communicates to the monitor through i2c communication.
Assuming that you are leaving installed the driver for the card that was supplied with the machine, then the code in:
/*code for EDID can be taken from*/
is all you need to access the I2C bus(ses) exposed by the card.
Please study this code.
It shows how to find out how many I2C busses the card supports and how to do transactions on each bus.
Cheers, Jason |
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