On Wed, 26 Dec 2007 10:40:22 -0800
"raki john" <[EMAIL PROTECTED]> wrote:
> Hi All,
>
> I am working with pxamci driver(2.6.22.1). I have made , core and host
> as separate modules.
>
> what is the correct order of loading the modules
>
> i am doing in this order first core (mmc_core.ko), then card(mmc_block.ko)
> after that host driver ( pxamci.ko). Is this correct.
>
If you're using just insmod, then yes, this is a valid order. The only thing
that is crucial is that mmc_core is loaded before any of the other. If you use
modprobe that will happen automatically.
> I do not know much about Linux device model.
>
There's lots of info on the web and in the Documentation/ directory of the
kernel source if you want to indulge yourself.
> i saw that pxamci.ko driver registers it self as platform_driver. When
> does its probe function is called. Is it called immediately after
> platform_driver_register(&pxamci_driver) is called.
>
For pxamci, yes. More specifically, the probe function is called when there is
both a driver (created by platform_driver_register()) and a device
(platform_device_register()) available. But since the device is added very
early in the pxamci case, the magic will happen when the driver registers.
> also in card driver (mmc_block.ko) in block.c file i saw a probe
> function(mmc_blk_probe). How does it is invoked .
>
When the corresponding device is registered. In this case it is whenever a card
is detected and initialized.
Rgds
Pierre
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