Date: Wed, 21 Mar 2001 13:48:42 +0900 From: Takanori Watanabe <takawata@shidahara1.planet.sci.kobe-u.ac.jp> To: Willem van Engen <wvengen@stack.nl> Cc: hackers@freebsd.org Subject: Re: driver: probe not called when smbus child Message-ID: <200103210448.NAA57784@shidahara1.planet.sci.kobe-u.ac.jp> In-Reply-To: Your message of "Tue, 20 Mar 2001 16:50:09 %2B0100." <3AB77C31.8213C158@stack.nl>
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In message <3AB77C31.8213C158@stack.nl>, Willem van Engen さんいわく:
>I'm trying to write a module which should be a child of the smbus.
>When I make the driver a child of the isa bus, identify, probe,
>and attach functions are properly called. I use the following
>code to do that:
> DRIVER_MODULE(my, isa, my_driver, my_devclass, 0, 0);
>But when I put it on the smbus using
> DRIVER_MODULE(my, smbus, my_driver, my_devclass, 0, 0);
>only identify is called. The identify function is as follows:
>
> static void
> my_identify(driver_t *driver, device_t parent)
> {
> devclass_t dc;
> device_t child;
>
> printf("my: my_identify called\n");
> dc = devclass_find("my");
> if (devclass_get_device(dc, 0)==NULL) {
> child = BUS_ADD_CHILD(parent, 0, "my", -1);
> }
> }
'smbus' code do not have 'bus_add_child' method.So the BUS_ADD_CHILD
call do not take effect.
Call device_add_child(parent,"my",-1); or define bus_add_child method.
And you will need to know grandparent device name to bind the device
collectly.(Or should we need a way to get device attribute such as
Mother board, Video Capture BitBang,Video Capture Cooked,VGA Card and etc.)
Takanori Watanabe
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