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From: Takashi Iwai <tiwai@suse.de>
To: James Calligeros <jcalligeros99@gmail.com>
Cc: "Martin Povišer" <povik+lin@cutebit.org>,
	"Liam Girdwood" <lgirdwood@gmail.com>,
	"Mark Brown" <broonie@kernel.org>,
	"Rob Herring" <robh@kernel.org>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	"Conor Dooley" <conor+dt@kernel.org>,
	"Sven Peter" <sven@kernel.org>, "Janne Grunau" <j@jannau.net>,
	"Neal Gompa" <neal@gompa.dev>,
	"David Rhodes" <david.rhodes@cirrus.com>,
	"Richard Fitzgerald" <rf@opensource.cirrus.com>,
	"Jaroslav Kysela" <perex@perex.cz>,
	"Takashi Iwai" <tiwai@suse.com>, "Ulf Hansson" <ulfh@kernel.org>,
	"Amit Kucheria" <amit.kucheria@linaro.org>,
	"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
	"Lars-Peter Clausen" <lars@metafoo.de>,
	"Vinod Koul" <vkoul@kernel.org>,
	"Matthias Brugger" <matthias.bgg@gmail.com>,
	"AngeloGioacchino Del Regno"
	<angelogioacchino.delregno@collabora.com>,
	"Shenghao Ding" <shenghao-ding@ti.com>,
	"Kevin Lu" <kevin-lu@ti.com>, "Baojun Xu" <baojun.xu@ti.com>,
	"Sen Wang" <sen@ti.com>,
	"James Schulman" <james.schulman@cirrus.com>,
	asahi@lists.linux.dev, linux-sound@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	patches@opensource.cirrus.com, "Takashi Iwai" <tiwai@suse.de>,
	linux-mediatek@lists.infradead.org,
	"Hector Martin" <marcan@marcan.st>
Subject: Re: [PATCH 08/28] ALSA: control: Add kcontrol callbacks for lock/unlock
Date: Tue, 29 Sep 2026 11:52:59 +0200	[thread overview]
Message-ID: <878q4k2xl0.wl-tiwai@suse.de> (raw)
In-Reply-To: <20260920-macaudio-v1-8-741cc20a74e5@gmail.com>

On Sun, 20 Sep 2026 06:53:47 +0200,
James Calligeros wrote:
> 
> From: Hector Martin <marcan@marcan.st>
> 
> This allows drivers to implement policy around locking/unlocking
> controls, such as enforcing that a group of controls may only be locked
> by the same process/file, and taking actions when the controls
> lock/unlock (such as granting special access on lock and resetting
> values on unlock).
> 
> This is, in particular, useful to implement volume safety controls, such
> that only a particular process (that locks controls and completes a
> handshake) may increase volumes above a given safe limit. It also allows
> the volume to be automatically lowered if that process dies (which will
> trigger an implicit unlock).
> 
> Signed-off-by: Hector Martin <marcan@marcan.st>
> Signed-off-by: James Calligeros <jcalligeros99@gmail.com>

This doesn't sound like a good approach to me, and this looks rather
irrelevant with the purpose of the series.


thanks,

Takashi

  reply	other threads:[~2026-09-29  9:53 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-20  4:53 [PATCH 00/28] Add speaker and headset jack support for Apple Silicon Macs James Calligeros
2026-09-20  4:53 ` [PATCH 01/28] dt-bindings: sound: Add Apple Macs sound peripherals James Calligeros
2026-09-20 18:45   ` Sven Peter
2026-09-21 15:02   ` Mark Brown
2026-09-21 15:22   ` Mark Brown
2026-09-23 11:35   ` Krzysztof Kozlowski
2026-09-20  4:53 ` [PATCH 02/28] ASoC: cs42l42: Fix typo James Calligeros
2026-09-21 15:25   ` Mark Brown
2026-09-20  4:53 ` [PATCH 03/28] ASoC: cs42l42: Set a faster digital ramp-up rate James Calligeros
2026-09-20  4:53 ` [PATCH 04/28] ASoC: apple: mca: Fix PD link double-frees James Calligeros
2026-09-20  4:53 ` [PATCH 05/28] alsa: pcm: Remove the qos request only if active James Calligeros
2026-09-21 15:03   ` Mark Brown
2026-09-22  8:09   ` Mark Brown
2026-09-20  4:53 ` [PATCH 06/28] ALSA: dmaengine: Always terminate DMA when a PCM is closed James Calligeros
2026-09-22 10:12   ` Mark Brown
2026-09-20  4:53 ` [PATCH 07/28] ALSA: Support nonatomic dmaengine PCMs James Calligeros
2026-09-21 15:32   ` Mark Brown
2026-09-20  4:53 ` [PATCH 08/28] ALSA: control: Add kcontrol callbacks for lock/unlock James Calligeros
2026-09-29  9:52   ` Takashi Iwai [this message]
2026-09-20  4:53 ` [PATCH 09/28] ASoC: ops: Move guts out of snd_soc_limit_volume James Calligeros
2026-09-20  4:53 ` [PATCH 10/28] ASoC: ops: Accept patterns in snd_soc_limit_volume James Calligeros
2026-09-21 15:27   ` Mark Brown
2026-09-21 16:27     ` Charles Keepax
2026-09-23 11:12       ` James Calligeros
2026-09-20  4:53 ` [PATCH 11/28] ASoC: ops: Introduce 'snd_soc_deactivate_kctl' James Calligeros
2026-09-22  9:53   ` Mark Brown
2026-09-20  4:53 ` [PATCH 12/28] ASoC: ops: Introduce 'soc_set_enum_kctl' James Calligeros
2026-09-22  9:50   ` Mark Brown
2026-09-20  4:53 ` [PATCH 13/28] ASoC: card: Let 'fixup_controls' return errors James Calligeros
2026-09-20  4:53 ` [PATCH 14/28] ASoC: ops: Export snd_soc_control_matches() James Calligeros
2026-09-22  9:43   ` Mark Brown
2026-09-20  4:53 ` [PATCH 15/28] ASoC: tas2764: Set up V/ISENSE on codec probe James Calligeros
2026-09-22  9:40   ` Mark Brown
2026-09-20  4:53 ` [PATCH 16/28] ASoC: apple: Add macaudio machine driver James Calligeros
2026-09-22  9:38   ` Mark Brown
2026-09-26  1:06     ` James Calligeros
2026-09-28 11:03       ` Mark Brown
2026-09-20  4:53 ` [PATCH 17/28] arm64: dts: apple: t8103-j274: Add speaker/headset jack nodes James Calligeros
2026-09-20  4:53 ` [PATCH 18/28] arm64: dts: apple: t8103-j313: " James Calligeros
2026-09-20  4:53 ` [PATCH 19/28] arm64: dts: apple: t8103-j293: " James Calligeros
2026-09-20  4:53 ` [PATCH 20/28] arm64: dts: apple: t8103-j45x: Add headset " James Calligeros
2026-09-20  4:54 ` [PATCH 21/28] arm64: dts: apple: t8112-j413: Add speaker/headset " James Calligeros
2026-09-20  4:54 ` [PATCH 22/28] arm64: dts: apple: t8112-j415: " James Calligeros
2026-09-20  4:54 ` [PATCH 23/28] arm64: dts: apple: t8112-j473: " James Calligeros
2026-09-20  4:54 ` [PATCH 24/28] arm64: dts: apple: t8112-j493: " James Calligeros
2026-09-20  4:54 ` [PATCH 25/28] arm64: dts: apple: t600x-j31x: " James Calligeros
2026-09-20  4:54 ` [PATCH 26/28] arm64: dts: apple: t600x-j375: " James Calligeros
2026-09-20  4:54 ` [PATCH 27/28] arm64: dts: apple: t602x-j41x: " James Calligeros
2026-09-20  4:54 ` [PATCH 28/28] arm64: dts: apple: t602x-j47x: " James Calligeros
2026-09-21 15:14 ` [PATCH 00/28] Add speaker and headset jack support for Apple Silicon Macs Mark Brown

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