linux-kernel - Re: [PATCH] regulator: core: Use list_voltage() to read single voltage regulators

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Message-ID: <5023E28D.1000208@wwwdotorg.org>
Date:	Thu, 09 Aug 2012 10:17:17 -0600
From:	Stephen Warren <swarren@...dotorg.org>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
CC:	Liam Girdwood <lrg@...com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] regulator: core: Use list_voltage() to read single voltage
 regulators

On 08/09/2012 09:45 AM, Mark Brown wrote:
> If the regulator doesn't supply a way of reading back the voltage but does
> provide a list_voltage() operation then use that with a selector of zero
> to read the voltage.

Ah, this makes sense. The only issue is:

static int add_regulator_attributes(struct regulator_dev *rdev)
...
	if ((ops->get_voltage && ops->get_voltage(rdev) >= 0) ||
	    (ops->get_voltage_sel && ops->get_voltage_sel(rdev) >= 0)) {
		status = device_create_file(dev, &dev_attr_microvolts);

so the microvolts file doesn't get created.

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