linux-kernel - Re: [PATCH 1/2] i2c designware make SCL and SDA falling time configurable

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Date:	Sun, 13 Oct 2013 20:36:54 +0900
From:	Shinya Kuribayashi <skuribay@...ox.com>
To:	rmallon@...il.com, mika.westerberg@...ux.intel.com,
	Romain.Baeriswyl@...lis.com
CC:	wsa@...-dreams.de, rob.herring@...xeda.com, pawel.moll@....com,
	mark.rutland@....com, swarren@...dotorg.org,
	ijc+devicetree@...lion.org.uk, rob@...dley.net,
	pierrick.hascoet@...lis.com, vgupta@...opsys.com,
	christian.ruppert@...lis.com, chiau.ee.chew@...el.com,
	khali@...ux-fr.org, rafael.j.wysocki@...el.com,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org,
	romainba@...lis.com
Subject: Re: [PATCH 1/2] i2c designware make SCL and SDA falling time configurable

On 10/10/13 9:54 AM, Ryan Mallon wrote:
> On 09/10/13 18:55, Mika Westerberg wrote:
>> On Tue, Oct 08, 2013 at 05:00:54PM +0200, Romain Baeriswyl wrote:
>>> @@ -307,15 +309,25 @@ int i2c_dw_init(struct dw_i2c_dev *dev)
>>>
>>>   	/* set standard and fast speed deviders for high/low periods */
>>>
>>> +	if (dev->sda_falling_time)
>>> +		sda_falling_time = dev->sda_falling_time;
>>> +	else
>>> +		sda_falling_time = 300; /* ns */
>>
>> I think this looks better:
>>
>> 	sda_falling_time = dev->sda_falling_time ? dev->sda_falling_time : 300;
>
> You can also use the gcc-ism, which is a bit more concise:
>
> 	sda_falling_time = dev->sda_falling_time ?: 300;

+1

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