linux-kernel - Re: [PATCH v6 1/6] soundwire: bus: Allow SoundWire peripherals to register IRQ handlers

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Message-ID: <ZMebD//fpy5TbYyH@matsya>
Date:   Mon, 31 Jul 2023 16:59:19 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Charles Keepax <ckeepax@...nsource.cirrus.com>
Cc:     broonie@...nel.org, lee@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        linus.walleij@...aro.org, lgirdwood@...il.com,
        yung-chuan.liao@...ux.intel.com, sanyog.r.kale@...el.com,
        pierre-louis.bossart@...ux.intel.com, alsa-devel@...a-project.org,
        patches@...nsource.cirrus.com, devicetree@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 1/6] soundwire: bus: Allow SoundWire peripherals to
 register IRQ handlers

On 25-07-23, 11:25, Charles Keepax wrote:
> From: Lucas Tanure <tanureal@...nsource.cirrus.com>
> 
> Currently the in-band alerts for SoundWire peripherals can only
> be communicated to the driver through the interrupt_callback
> function. This however is slightly inconvient for devices that wish to
> share IRQ handling code between SoundWire and I2C/SPI, the later would
> normally register an IRQ handler with the IRQ subsystem. However there
> is no reason the SoundWire in-band IRQs can not also be communicated
> as an actual IRQ to the driver.
> 
> Add support for SoundWire peripherals to register a normal IRQ handler
> to receive SoundWire in-band alerts, allowing code to be shared across
> control buses. Note that we allow users to use both the
> interrupt_callback and the IRQ handler, this is useful for devices which
> must clear additional chip specific SoundWire registers that are not a
> part of the normal IRQ flow, or the SoundWire specification.

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

-- 
~Vinod