linux-kernel - Re: [PATCH 1/3] i2c: uniphier: add UniPhier FIFO-less I2C driver

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Message-ID: <CAK7LNATy0zL5fv2ypk3_ECCpFye2yJ_94Tx0c=ZE-Ptnn=8gEg@mail.gmail.com>
Date:	Fri, 23 Oct 2015 19:52:51 +0900
From:	Masahiro Yamada <yamada.masahiro@...ionext.com>
To:	Wolfram Sang <wsa@...-dreams.de>
Cc:	linux-i2c@...r.kernel.org,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Anders Berg <anders.berg@...gotech.com>,
	Max Schwarz <max.schwarz@...ine.de>,
	David Box <david.e.box@...ux.intel.com>,
	Wei Yan <sledge.yanwei@...wei.com>,
	Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>,
	Andrew Bresticker <abrestic@...omium.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kamal Dasu <kdasu.kdev@...il.com>,
	Laurentiu Palcu <laurentiu.palcu@...el.com>,
	Baruch Siach <baruch@...s.co.il>,
	Xudong Chen <xudong.chen@...iatek.com>,
	Lee Jones <lee.jones@...aro.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Neelesh Gupta <neelegup@...ux.vnet.ibm.com>,
	Sachin Kamat <sachin.kamat@...sung.com>,
	Ray Jui <rjui@...adcom.com>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 1/3] i2c: uniphier: add UniPhier FIFO-less I2C driver

Hi Wolfram,


Thanks for your review!

2015-10-23 5:59 GMT+09:00 Wolfram Sang <wsa@...-dreams.de>:
> On Thu, Jul 30, 2015 at 05:12:20PM +0900, Masahiro Yamada wrote:
>> Add support for on-chip I2C controller used on old UniPhier SoCs
>> such as PH1-LD4, PH1-sLD8, etc..  This adapter is so simple that
>> it has no FIFO in it.
>>
>> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
>
> Finally! Mostly looking good.
>
>> +static u32 uniphier_i2c_functionality(struct i2c_adapter *adap)
>> +{
>> +     return I2C_FUNC_I2C;
>> +}
>
> No I2C_FUNC_SMBUS_EMUL? But check if SMBUS_QUICK is supported by your
> adapter.

Added in v2.


>> +     regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>> +     if (!regs) {
>> +             dev_err(dev, "failed to get memory resource");
>> +             return -EINVAL;
>> +     }
>
> This 'if'-block can go. devm_ioremap_resource will check it for you.
>

Fixed in v2.

Thanks!


-- 
Best Regards
Masahiro Yamada
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