linux-kernel - Re: [PATCH] regulator: add MAX8907 driver

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Message-ID: <50203589.5020509@wwwdotorg.org>
Date:	Mon, 06 Aug 2012 15:22:17 -0600
From:	Stephen Warren <swarren@...dotorg.org>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
CC:	Liam Girdwood <lrg@...com>, linux-kernel@...r.kernel.org,
	Laxman Dewangan <ldewangan@...dia.com>,
	Gyungoh Yoo <jack.yoo@...im-ic.com>,
	Stephen Warren <swarren@...dia.com>
Subject: Re: [PATCH] regulator: add MAX8907 driver

On 08/04/2012 04:19 AM, Mark Brown wrote:
> On Thu, Aug 02, 2012 at 12:27:13PM -0600, Stephen Warren wrote:
> 
>> The MAX8907 is an I2C-based power-management IC containing voltage
>> regulators, a reset controller, a real-time clock, and a touch-screen
>> controller.

>> +static int max8907_regulator_wled_set_current_limit(struct regulator_dev *rdev,
>> +						    int min_uA, int max_uA)
> 
> I'm really not convinced it makes much sense to represent the backlight
> driver current regulators as regulators, they only get used as part of
> the backlight and are usually tightly coupled to their boosts.

So you mean just completely remove any reference to WLED from the
driver? There is a register to configure the current limit - do you not
expect anything to ever need to set that in the kernel; do you expect
the HW default to be correct, or the bootloader to set the desired value?

Thanks for the other parts of the review.
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