Re: Using driver service from another driver

[Himanshu Chauhan <hs.chauhan@gmail.com>]

Lee Revell wrote:
> On Tue, 2006-11-07 at 22:47 +0530, Himanshu Chauhan wrote:
>   
>> Dear all,
>>
>> I am writing a virtual audio driver (similar to dummy.c in alsa tree).
>> But I need to
>> access the driver services of the soundcard installed on the system. How
>> can this
>> be done? Can I directly call the functions or I need to specifically
>> open the
>> device?
>>
>> This is for the first time I am doing ALSA drivers so I seek your help.
>>     
>
> EXPORT_SYMBOL() the driver functions you wish to call from the other
> driver.  "grep -r EXPORT_SYMBOL sound/drivers/" for examples.
>
> Lee
>
>
>   
But then that would require changes to the other driver. So
it won't work on all systems. Different systems have different
sound cards. Is there any "universally applicable" way?

Regards
--Himanshu


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