linux-kernel - Re: [PATCH] ASoC: mediatek: mt8195: add sof be ops to check audio active

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Date:   Mon, 12 Dec 2022 09:50:51 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Curtis Malainey <cujomalainey@...gle.com>,
        YC Hung <yc.hung@...iatek.com>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Tzung-Bi Shih <tzungbi@...nel.org>,
        Trevor Wu <trevor.wu@...iatek.com>,
        "Nicolas F . R . A . Prado" <nfraprado@...labora.com>,
        Jiaxin Yu <jiaxin.yu@...iatek.com>,
        alsa-devel@...a-project.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Curtis Malainey <cujomalainey@...omium.org>,
        whalechang@...gle.com
Subject: Re: [PATCH] ASoC: mediatek: mt8195: add sof be ops to check audio
 active

Il 09/12/22 19:27, Curtis Malainey ha scritto:
> On Thu, Dec 8, 2022 at 7:11 PM YC Hung <yc.hung@...iatek.com> wrote:
>>
>> In MT8195 SOF design, both DSP and audio driver would access audio
>> registers. Before DSP accesses audio registers, audio power and clock
>> should be enabled. DSP will hang up if DSP access audio register but
>> audio power and clock are disabled. Therefore, we add audio pm runtime
>> active checking before accessing audio registers in SOF BE's callback
>> hw_params function to avoid this situation.
>>
>> Signed-off-by: YC Hung <yc.hung@...iatek.com>
> 
> Acked-by: Curtis Malainey <cujomalainey@...omium.org>
> 

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>