First of all, thank you for your attention.
But I couldn't find a pxa3xx-ac97 driver, where did you find it?
Please let me know.
It would be helpful to me.
Thanks,
Matt
2011/8/25 stan <achir...@ymail.com>:
> Hi,
>
> I had faced the same issue with pxa2xx-ac97 driver, just 3-4 months
> before. My working was with kernel version 2.6.29 & Marvell's PXA270.
> My problem was solved when i disabled the inclusion of the sound/soc/
> pxa/pxa2xx-ac97.c driver, in menuconfig itself. So only the sound/arm/
> pxa2xx-ac97.c driver is used in my case, which also communicates with
> the sound/pci/ac97/ac97_codec.c to perform my codec related
> operations. I encountered this solution by chance & it is fine with me
> for playing audio & audio call in android. We need to take care of
> unmute & volume operation, in android HAL or in driver.
>
> Initially i followed the alsa standard and wrote a machine driver,
> which maps the platform driver & codec driver. But in the working copy
> i had to disable the machine driver too, bcoz it was mapped to the
> sound/soc/pxa/pxa2xx-ac97.c driver.
>
> But my doubt in first place is, have you checked for modification/
> addition to pxa2xx-ac97 driver for PXA3XX platform since you are using
> PXA320 & the pxa2xx-ac97 driver. I ask this since i have seen a pxa3xx-
> ac97 driver for PXA3XX platform, it was along with Marvell's
> Littleton.
>
> Regards,
> Stan
>
> On Aug 23, 4:57 am, "Matt K. Jeon" <mattkj...@gmail.com> wrote:
>> 2011/8/22 Matt K. Jeon <mattkj...@gmail.com>:
>>
>> > Hello All,
>>
>> > I am suffering from enabling "pxa2xx-ac97" driver at kernel version 2.6.35.
>> > There are 2 different points of registering platform drivers in
>> > different source code;
>> > - sound/arm/pxa2xx-ac97.c through pxa2xx_ac97_init()
>> > static struct platform_driver pxa2xx_ac97_driver = {
>> > .probe = pxa2xx_ac97_driver_probe,
>> > .remove = __devexit_p(pxa2xx_ac97_remove),
>> > .driver = {
>> > .name = "pxa2xx-ac97",
>> > .owner = THIS_MODULE,
>> > #ifdef CONFIG_PM
>> > .pm = &pxa2xx_ac97_pm_ops,
>> > #endif
>> > },
>> > };
>>
>> > - sound/soc/pxa/pxa2xx-ac97.c through pxa_ac97_init()
>> > static struct platform_driver pxa2xx_ac97_driver = {
>> > .probe = pxa2xx_ac97_dev_probe,
>> > .remove = __devexit_p(pxa2xx_ac97_dev_remove),
>> > .driver = {
>> > .name = "pxa2xx-ac97",
>> > .owner = THIS_MODULE,
>> > },
>> > };
>>
>> > those are the same name of functions and the name of each drivers are
>> > the same so,
>> > when try to register the later driver at platform driver, it complains
>> > that a driver is already registered with the same name at
>>
>> > other = driver_find(drv->name, drv->bus);
>> > if (other) {
>> > put_driver(other);
>> > printk(KERN_ERR "Error: Driver '%s' is already registered, "
>> > "aborting...\n", drv->name);
>> > return -EBUSY;
>> > }
>>
>> > above code compares 2 drivers with each driver's name!!!
>>
>> > Any idea?
>>
>> > Of course I had changed the name of one driver to something different
>> > and the result is fine but in that case DAI (digital audio interface)
>> > couldn't be registered at device (soc ac97), because DAI registering
>> > procedure compares the addresses of each drivers not name!!!
>>
>> > Thanks in advance,
>> > Matt
>
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