linux-kernel - Re: [PATCH] dt-bindings: mfd: Improve readability for TPS65217 interrupt sources

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Date:   Tue, 22 Nov 2016 16:00:13 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Milo Kim <woogyom.kim@...il.com>
Cc:     bcousson@...libre.com, Tony Lindgren <tony@...mide.com>,
        linux-omap@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Robert Nelson <robertcnelson@...il.com>
Subject: Re: [PATCH] dt-bindings: mfd: Improve readability for TPS65217
 interrupt sources

On Tue, 22 Nov 2016, Lee Jones wrote:

> On Mon, 21 Nov 2016, Milo Kim wrote:
> 
> > AC and USB interrupts are related with external power input.
> > PB interrupt means push button pressed or released event.
> > Use better human readable definitions.
> > 
> > Signed-off-by: Milo Kim <woogyom.kim@...il.com>
> > ---
> >  arch/arm/boot/dts/am335x-bone-common.dtsi | 4 ++--
> >  include/dt-bindings/mfd/tps65217.h        | 6 +++---
> >  2 files changed, 5 insertions(+), 5 deletions(-)
> > 
> > diff --git a/arch/arm/boot/dts/am335x-bone-common.dtsi b/arch/arm/boot/dts/am335x-bone-common.dtsi
> > index dc561d5..1848d58 100644
> > --- a/arch/arm/boot/dts/am335x-bone-common.dtsi
> > +++ b/arch/arm/boot/dts/am335x-bone-common.dtsi
> > @@ -319,13 +319,13 @@
> >  	ti,pmic-shutdown-controller;
> >  
> >  	charger {
> > -		interrupts = <TPS65217_IRQ_AC>, <TPS65217_IRQ_USB>;
> > +		interrupts = <TPS65217_IRQ_AC_POWER>, <TPS65217_IRQ_USB_POWER>;
> >  		interrupts-names = "AC", "USB";
> >  		status = "okay";
> >  	};
> >  
> >  	pwrbutton {
> > -		interrupts = <TPS65217_IRQ_PB>;
> > +		interrupts = <TPS65217_IRQ_PUSHBUTTON>;
> 
> Push button or power button?
> 
> >  		status = "okay";
> >  	};
> >  
> > diff --git a/include/dt-bindings/mfd/tps65217.h b/include/dt-bindings/mfd/tps65217.h
> > index cafb9e6..0293fdd 100644
> > --- a/include/dt-bindings/mfd/tps65217.h
> > +++ b/include/dt-bindings/mfd/tps65217.h
> > @@ -19,8 +19,8 @@
> >  #ifndef __DT_BINDINGS_TPS65217_H__
> >  #define __DT_BINDINGS_TPS65217_H__
> >  
> > -#define TPS65217_IRQ_USB	0
> > -#define TPS65217_IRQ_AC		1
> > -#define TPS65217_IRQ_PB		2
> > +#define TPS65217_IRQ_USB_POWER		0	/* USB power state change */
> > +#define TPS65217_IRQ_AC_POWER		1	/* AC power state change */
> > +#define TPS65217_IRQ_PUSHBUTTON		2	/* Push button state change */
> 
> This changes the ABI.
> 
> It will require a DT Ack.

Tell a lie.  Sorry, I was getting false positives from my grep.  It
looks like you use the same scheme from within include/linux.  I
suggest that you probable don't want to do that.

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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