linux-kernel - Re: [PATCH] atmel ac97c: using software reset instead hardware reset if not available

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Message-ID: <4ECE1FF1.2050707@atmel.com>
Date:	Thu, 24 Nov 2011 11:44:01 +0100
From:	Nicolas Ferre <nicolas.ferre@...el.com>
To:	voice <voice.shen@...el.com>
CC:	linux-kernel@...r.kernel.org, linux-sound@...r.kernel.org,
	JM.Lin@...el.com, Hong.Xu@...el.com
Subject: Re: [PATCH] atmel ac97c: using software reset instead hardware reset
 if not available

On 11/23/2011 11:05 AM, voice :
> Using software reset instead hardware reset if not available
> 
> Signed-off-by: Bo Shen <voice.shen@...el.com>

Acked-by: Nicolas Ferre <nicolas.ferre@...el.com>

You may need to sent it to the sound subsystem mailing-list and maintainers.

Anyway, I let you follow this patch... As it is a fixup and will benefit
to existing platforms, I think that it can make its way to mainline
during 3.2 phase.

Best regards,

> ---
>  sound/atmel/ac97c.c |    4 ++++
>  1 files changed, 4 insertions(+), 0 deletions(-)
> 
> diff --git a/sound/atmel/ac97c.c b/sound/atmel/ac97c.c
> index 6e5adde..73516f6 100644
> --- a/sound/atmel/ac97c.c
> +++ b/sound/atmel/ac97c.c
> @@ -899,6 +899,10 @@ static void atmel_ac97c_reset(struct atmel_ac97c *chip)
>  		/* AC97 v2.2 specifications says minimum 1 us. */
>  		udelay(2);
>  		gpio_set_value(chip->reset_pin, 1);
> +	} else {
> +		ac97c_writel(chip, MR, AC97C_MR_WRST | AC97C_MR_ENA);
> +		udelay(2);
> +		ac97c_writel(chip, MR, AC97C_MR_ENA);
>  	}
>  }
>  
-- 
Nicolas Ferre
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