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Wed, 2 Apr 2025 10:14:55 +0200 (CEST) Message-ID: Date: Wed, 2 Apr 2025 10:14:55 +0200 Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] ALSA: pcm: Release paused streams before suspend if resume is not supported To: =?UTF-8?Q?P=C3=A9ter_Ujfalusi?= , Takashi Iwai Cc: lgirdwood@gmail.com, broonie@kernel.org, tiwai@suse.com, linux-sound@vger.kernel.org, kai.vehmanen@linux.intel.com, ranjani.sridharan@linux.intel.com, yung-chuan.liao@linux.intel.com, pierre-louis.bossart@linux.dev, liam.r.girdwood@intel.com References: <20250401133652.11617-1-peter.ujfalusi@linux.intel.com> <87r02cym1c.wl-tiwai@suse.de> <9e7d5b08-c983-49aa-8076-062d02848da2@perex.cz> <87jz83ztn7.wl-tiwai@suse.de> <206300d0-839a-40e9-975e-e58ac689315c@perex.cz> <87h637znpp.wl-tiwai@suse.de> <9c8c96a5-f6ba-4a62-956c-ccfc8af996eb@linux.intel.com> From: Jaroslav Kysela Content-Language: en-US Autocrypt: addr=perex@perex.cz; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 02. 04. 25 8:41, Péter Ujfalusi wrote: > I'm not sure if sending the SUSPEND trigger to a paused stream is a > solution either as that will surely need different handling as it is not > expected currently (and again SOF have a delicate dance around triggers > starting in ASoC level, but might work). It's unfortunate, but things should be resolved in the appropriate code levels IMHO. The core code should allow all mechanisms. > Note on the pause in general: for few years now pause is in reality a > niche feature and most drivers will never see it used. PA. PW, Chrome, > Android don't use it much or at all, so hitting a suspend while the > stream is paused is a CI thing mostly. mplayer/mpv (kodi might as well) > do pause directly when using ALSA and the PCM supports it, but they work > w/o SNDRV_PCM_INFO_PAUSE just fine. We are providing API, so we should not judge, if things are widely used. I believe that some users use the perfect pause instead full stream restart. Jaroslav -- Jaroslav Kysela Linux Sound Maintainer; ALSA Project; Red Hat, Inc.