From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Katsuhiro Suzuki" Subject: Re: [PATCH 2/2] ASoC: support ROHM BD28623 codec Date: Wed, 21 Feb 2018 22:15:52 +0900 Message-ID: <002601d3ab16$195fdf20$4c1f9d60$@socionext.com> References: <20180221043311.25840-1-suzuki.katsuhiro@socionext.com> <20180221043311.25840-3-suzuki.katsuhiro@socionext.com> <20180221122639.GH8334@sirena.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20180221122639.GH8334@sirena.org.uk> Content-Language: ja List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: 'Mark Brown' , =?iso-2022-jp?B?U3V6dWtpLCBLYXRzdWhpcm8vGyRCTmtMWhsoQiAbJEI+IUduGyhC?= Cc: devicetree@vger.kernel.org, alsa-devel@alsa-project.org, Masami Hiramatsu , linux-kernel@vger.kernel.org, Jassi Brar , Rob Herring , linux-arm-kernel@lists.infradead.org List-Id: devicetree@vger.kernel.org Hello Mark, > -----Original Message----- > From: Mark Brown [mailto:broonie@kernel.org] > Sent: Wednesday, February 21, 2018 9:27 PM > To: Suzuki, Katsuhiro > Cc: alsa-devel@alsa-project.org; Rob Herring ; devicetree@vger.kernel.org; Masami Hiramatsu > ; Jassi Brar ; linux-arm-kernel@lists.infradead.org; > linux-kernel@vger.kernel.org > Subject: Re: [PATCH 2/2] ASoC: support ROHM BD28623 codec > > On Wed, Feb 21, 2018 at 01:33:11PM +0900, Katsuhiro Suzuki wrote: > > > +++ b/sound/soc/codecs/bd28623.c > > @@ -0,0 +1,258 @@ > > +// SPDX-License-Identifier: GPL-2.0 > > +/* > > + * ROHM BD28623MUV class D speaker amplifier codec driver. > > + * > > Please make the entire comment C++ so this looks intentional. > > > + dev_err(dev, "Failed to enable supplies: %d\n", ret); > > + return ret; > > + } > > + > > + gpiod_set_value(bd->reset_gpio, 0); > > Since this GPIO is not needed in atomic contexts you should use the > _cansleep() versions of the GPIO functions - it doesn't cost you > anything and means that if for some reason someone wired this up to a > GPIO that can't be used in atomic context the driver will just work. > Thank you, I'll fix it. > > + bd->reset_gpio = devm_gpiod_get_optional(dev, "reset", > > + GPIOD_OUT_HIGH); > > > + bd->mute_gpio = devm_gpiod_get_optional(dev, "mute", > > + GPIOD_OUT_HIGH); > > These properties were documented as mandatory in the binding but are > optional here. It's fine that they're optional but I'd expect the > binding to be consistent with this. > These GPIO is optional if board vendor connects directly RSTX and MUTEX pins to VCC. So I think I should fix DT-bindings document. > > +static int bd28623_remove(struct platform_device *pdev) > > +{ > > + struct bd28623_priv *bd = platform_get_drvdata(pdev); > > + > > + regulator_bulk_disable(ARRAY_SIZE(bd->supplies), bd->supplies); > > + > > + return 0; > > +} > > We don't enable the supplies explicitly as part of the probe function so > it feels wrong to disable on remove() - I'm sure it is fine in practice > as-is but I'd have to think too hard to confirm that. I'd put this in a > component level remove function instead so that it's consistent. Ah, indeed. I will use component driver's remove() function instead of platform. Thank you for review! Regards, -- Katsuhiro Suzuki