linux-kernel - Re: [PATCH 1/2] HDA: Fix digital microphone on CS420x

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Date:	Sun, 04 Nov 2012 09:16:44 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Daniel J Blueman <daniel@...ra.org>
Cc:	alsa-devel@...a-project.org,
	Alexander Stein <alexander.stein@...tec-electronic.com>,
	Jaroslav Kysela <perex@...ex.cz>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] HDA: Fix digital microphone on CS420x

At Sun,  4 Nov 2012 13:19:03 +0800,
Daniel J Blueman wrote:
> 
> Correctly enable the digital microphones with the right bits in the right coeffecient
> registers on Cirrus CS4206/7 codecs. It also prevents misconfiguring ADC1/2.
> 
> This fixes the digital mic on the Macbook Pro 10,1/Retina.
> 
> Based-on-patch-by: Alexander Stein <alexander.stein@...tec-electronic.com>
> Signed-off-by: Daniel J Blueman <daniel@...ra.org>

Thanks, this looks more comprehensive.  DIG1 and DIG2 seem to have
been set wrongly in the original code, based on the Cirrus's example
code.  Is the right-only recording problem fixed by this patch?

Alexander, could you check this doesn't break your machine?


Takashi

> ---
>  sound/pci/hda/patch_cirrus.c |   16 ++++++++++------
>  1 file changed, 10 insertions(+), 6 deletions(-)
> 
> diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
> index 61a7113..859a119 100644
> --- a/sound/pci/hda/patch_cirrus.c
> +++ b/sound/pci/hda/patch_cirrus.c
> @@ -101,8 +101,8 @@ enum {
>  #define CS420X_VENDOR_NID	0x11
>  #define CS_DIG_OUT1_PIN_NID	0x10
>  #define CS_DIG_OUT2_PIN_NID	0x15
> -#define CS_DMIC1_PIN_NID	0x12
> -#define CS_DMIC2_PIN_NID	0x0e
> +#define CS_DMIC1_PIN_NID	0x0e
> +#define CS_DMIC2_PIN_NID	0x12
>  
>  /* coef indices */
>  #define IDX_SPDIF_STAT		0x0000
> @@ -1079,14 +1079,18 @@ static void init_input(struct hda_codec *codec)
>  			cs_automic(codec, NULL);
>  
>  		coef = 0x000a; /* ADC1/2 - Digital and Analog Soft Ramp */
> +		cs_vendor_coef_set(codec, IDX_ADC_CFG, coef);
> +
> +		coef = cs_vendor_coef_get(codec, IDX_BEEP_CFG);
>  		if (is_active_pin(codec, CS_DMIC2_PIN_NID))
> -			coef |= 0x0500; /* DMIC2 2 chan on, GPIO1 off */
> +			coef |= 1 << 4; /* DMIC2 2 chan on, GPIO1 off */
>  		if (is_active_pin(codec, CS_DMIC1_PIN_NID))
> -			coef |= 0x1800; /* DMIC1 2 chan on, GPIO0 off
> +			coef |= 1 << 3; /* DMIC1 2 chan on, GPIO0 off
>  					 * No effect if SPDIF_OUT2 is
>  					 * selected in IDX_SPDIF_CTL.
>  					*/
> -		cs_vendor_coef_set(codec, IDX_ADC_CFG, coef);
> +
> +		cs_vendor_coef_set(codec, IDX_BEEP_CFG, coef);
>  	} else {
>  		if (spec->mic_detect)
>  			cs_automic(codec, NULL);
> -- 
> 1.7.10.4
> 
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