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From: Liam Girdwood <lrg@slimlogic.co.uk>
To: anish.singh@samsung.com
Cc: "liam.girdwood@wolfsonmicro.com" <liam.girdwood@wolfsonmicro.com>,
	"alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
	"broonie@opensource.wolfsonmicro.com"
	<broonie@opensource.wolfsonmicro.com>
Subject: Re: No shutdown code in soc-core.c
Date: Mon, 19 Apr 2010 13:15:14 +0100	[thread overview]
Message-ID: <1271679314.3208.100.camel@odin> (raw)
In-Reply-To: <21125077.117201271487763642.JavaMail.weblogic@epml11>

On Sat, 2010-04-17 at 07:02 +0000, ANISH KUMAR wrote:
> Why this shutdown filed is not there in the struct shown below:
> static struct platform_driver soc_driver 
> {
> .shutdown       = soc_shutdown,                  //soc-core.c 
> }
> This shutdown call this codec_dev->shutdown function 
> In my case i am turning off the amplifier using this call.Which
> solved my problem of "TAK" sound during reset.
> 
> I agree that soc_codec_close() is calling the shutdown function
> but in my case there is a call to set the path after this which is
> turning on the amplifier and suddenly if we reset the phone it is
> causing "TAK" sound.Probably because AMPLIFIER was on.
> 
> Anyway why this function call soc_shutdown() is there in 
> soc-core.c if no one is calling it???
> I know there will be a redundancy if we have shutdown field
> in the struct shown above as soc_codec_close call also calls
> codec shutdown code.
> But in my case it is solving my problem. 
>  
> 

Did you see Mark's reply on dev_pm_ops ?

i.e.

static const struct dev_pm_ops soc_pm_ops = {
	.suspend = soc_suspend,
	.resume = soc_resume,
	.poweroff = soc_poweroff,
};

Thanks

Liam

-- 
Freelance Developer, SlimLogic Ltd
ASoC and Voltage Regulator Maintainer.
http://www.slimlogic.co.uk

  reply	other threads:[~2010-04-19 12:15 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-04-17  7:02 No shutdown code in soc-core.c ANISH KUMAR
2010-04-19 12:15 ` Liam Girdwood [this message]
  -- strict thread matches above, loose matches on Subject: below --
2010-04-22  8:10 ANISH KUMAR
2010-04-19 13:19 ANISH KUMAR
2010-04-19 14:10 ` Liam Girdwood
2010-04-19 16:59   ` Mark Brown
2010-04-16 16:44 ANISH KUMAR
2010-04-16 17:21 ` Liam Girdwood
2010-04-16  2:29 ANISH KUMAR
2010-04-16 16:03 ` Liam Girdwood
2010-04-16 18:47 ` Mark Brown

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