linux-kernel - Re: [PATCH v2 1/7] gpio: brcmstb: Do not use gc->pin2mask()

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Date:   Sat, 28 Oct 2017 09:54:07 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Doug Berger <opendmb@...il.com>,
        Gregory Fong <gregory.0xf0@...il.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Brian Norris <computersforpeace@...il.com>,
        bcm-kernel-feedback-list@...adcom.com, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 1/7] gpio: brcmstb: Do not use gc->pin2mask()



On 10/24/2017 12:54 PM, Doug Berger wrote:
> From: Linus Walleij <linus.walleij@...aro.org>
> 
> The pin2mask() accessor only shuffles BIT ORDER in big endian systems,
> i.e. the bitstuffing is swizzled big endian so "bit 0" is bit 7 or
> bit 15 or bit 31 or so.
> 
> The brcmstb only uses big endian BYTE ORDER which will be taken car of
> by the ->write_reg() callback.
> 
> Just use BIT(offset) to assign the bit.
> 
> Cc: Gregory Fong <gregory.0xf0@...il.com>
> Cc: Florian Fainelli <f.fainelli@...il.com>
> Signed-off-by: Linus Walleij <linus.walleij@...aro.org>

Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
-- 
Florian