linux-kernel - Re: [RESEND PATCH] ASoC: wsa881x: mark read_only

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Message-ID: <20200414115512.GG72691@vkoul-mobl>
Date:   Tue, 14 Apr 2020 17:25:12 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc:     broonie@...nel.org, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RESEND PATCH] ASoC: wsa881x: mark read_only_wordlength flag

On 14-04-20, 12:03, Srinivas Kandagatla wrote:
> WSA881x works in PDM mode so the wordlength is fixed, which also makes
> the only field "WordLength" in DPN_BlockCtrl1 register a read-only.
> Writing to this register will throw up errors with Qualcomm Controller.
> So use ro_blockctrl1_reg flag to mark this field as read-only so that
> core will not write to this register.

Reviewed-by: Vinod Koul <vkoul@...nel.org>

> 
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> ---
> Hi Mark,
> 
> For some reason this patch was missed during last merge window,
> Other patch in this series is already in mainline.
> Without this patch audio is not functional on DB845c and other SDM845
> based platforms.
> 
> Can you please take this for next possible rc.
> 
> Thanks,
> srini
> 
>  sound/soc/codecs/wsa881x.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/sound/soc/codecs/wsa881x.c b/sound/soc/codecs/wsa881x.c
> index f2d6f2f81f14..d39d479e2378 100644
> --- a/sound/soc/codecs/wsa881x.c
> +++ b/sound/soc/codecs/wsa881x.c
> @@ -394,6 +394,7 @@ static struct sdw_dpn_prop wsa_sink_dpn_prop[WSA881X_MAX_SWR_PORTS] = {
>  		.min_ch = 1,
>  		.max_ch = 1,
>  		.simple_ch_prep_sm = true,
> +		.read_only_wordlength = true,
>  	}, {
>  		/* COMP */
>  		.num = 2,
> @@ -401,6 +402,7 @@ static struct sdw_dpn_prop wsa_sink_dpn_prop[WSA881X_MAX_SWR_PORTS] = {
>  		.min_ch = 1,
>  		.max_ch = 1,
>  		.simple_ch_prep_sm = true,
> +		.read_only_wordlength = true,
>  	}, {
>  		/* BOOST */
>  		.num = 3,
> @@ -408,6 +410,7 @@ static struct sdw_dpn_prop wsa_sink_dpn_prop[WSA881X_MAX_SWR_PORTS] = {
>  		.min_ch = 1,
>  		.max_ch = 1,
>  		.simple_ch_prep_sm = true,
> +		.read_only_wordlength = true,
>  	}, {
>  		/* VISENSE */
>  		.num = 4,
> @@ -415,6 +418,7 @@ static struct sdw_dpn_prop wsa_sink_dpn_prop[WSA881X_MAX_SWR_PORTS] = {
>  		.min_ch = 1,
>  		.max_ch = 1,
>  		.simple_ch_prep_sm = true,
> +		.read_only_wordlength = true,
>  	}
>  };
>  
> -- 
> 2.21.0

-- 
~Vinod