Platform driver Linux

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hi all,

I am working as a embedded linux developer and i am new to Linux, i am having a doubt in platform driver, can any one give a explanation on the below structure

C

struct platform_device {
	const char	*name;
	u32		id;
	struct device	dev;
	u32		num_resources;
	struct resource	*resource;
};

I want to know what is the work of id in the structure if we put -1 for id what does it mean

Thanks,
shan

[Edit]Shouting removed from title[/Edit]

Posted 29-May-13 6:20am

shan bala

Updated 29-May-13 7:13am

Thomas Daniels

v4

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Matthew Faithfull 29-May-13 12:35pm

You might want to give some idea where you found this struct and what you were doing at the time. Linux is quite a large ammount of code and has quite a few uses.
I'm not aware of anything called a 'platform driver' but that doesn't mean it's not familiar to someone else around here.

ZurdoDev 29-May-13 17:53pm

I would refer to https://www.kernel.org/doc/Documentation/driver-model/platform.txt

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KarstenK · Answer 1 · 2013-05-30T01:25:00

Solution 1

id is most times an "identifier" aka "handle". -1 is often used for "invalid value"

PS: here is a more Windows-flavour forum, so with Linux-question it is not the best place to find

Posted 30-May-13 1:25am

KarstenK