linux-kernel - Re: [PATCH v2 10/16] pwm: Add PWM modes

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Message-ID: <20180119223452.doeqfd4aewkf5fla@rob-hp-laptop>
Date:   Fri, 19 Jan 2018 16:34:52 -0600
From:   Rob Herring <robh@...nel.org>
To:     Claudiu Beznea <claudiu.beznea@...rochip.com>
Cc:     thierry.reding@...il.com, mark.rutland@....com,
        linux@...linux.org.uk, daniel@...que.org, haojian.zhuang@...il.com,
        robert.jarzmik@...e.fr, corbet@....net,
        nicolas.ferre@...rochip.com, alexandre.belloni@...e-electrons.com,
        linux-pwm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org,
        linux-rpi-kernel@...ts.infradead.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v2 10/16] pwm: Add PWM modes

On Fri, Jan 12, 2018 at 04:22:57PM +0200, Claudiu Beznea wrote:
> Define a macros for PWM modes to be used by device tree sources.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea@...rochip.com>
> ---
>  include/dt-bindings/pwm/pwm.h | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/include/dt-bindings/pwm/pwm.h b/include/dt-bindings/pwm/pwm.h
> index ab9a077e3c7d..b8617431f8ec 100644
> --- a/include/dt-bindings/pwm/pwm.h
> +++ b/include/dt-bindings/pwm/pwm.h
> @@ -12,4 +12,7 @@
>  
>  #define PWM_POLARITY_INVERTED			(1 << 0)
>  
> +#define PWM_DTMODE_NORMAL			(1 << 0)

Bit 0 is already taken. I think you mean (0 << 1)?

Personally, I'd just drop this define. A define for a 0 value makes more 
sense when each state is equally used (like active high or low), but if 
0 is the more common case, then I don't the need for a define.

> +#define PWM_DTMODE_COMPLEMENTARY		(1 << 1)
> +
>  #endif
> -- 
> 2.7.4
>