From: Stephen Warren <swarren@wwwdotorg.org>
To: Guenter Roeck <linux@roeck-us.net>
Cc: Wei Ni <wni@nvidia.com>, Mark Brown <broonie@kernel.org>,
"khali@linux-fr.org" <khali@linux-fr.org>,
"lm-sensors@lm-sensors.org" <lm-sensors@lm-sensors.org>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3 1/2] hwmon: (lm90) Add power control
Date: Mon, 09 Sep 2013 22:13:56 -0600 [thread overview]
Message-ID: <522E9C84.9070405@wwwdotorg.org> (raw)
In-Reply-To: <522E97CE.4070300@roeck-us.net>
On 09/09/2013 09:53 PM, Guenter Roeck wrote:
> On 09/09/2013 08:40 PM, Stephen Warren wrote:
>> On 09/09/2013 09:36 PM, Guenter Roeck wrote:
...
>>> My understanding is that by adding regulator support you essentially
>>> committed to adding regulators (if necessary dummy ones) for this driver
>>> to all those platforms. This is quite similar to other drivers in the
>>> same situation. Once you start along that route, you'll have to go it
>>> all the way.
>>
>> By using regulator_get_optional(), the regulator should be optional,
>> hence you only have to add it to platforms that need it.
>>
>
> Earlier comments suggest that this is not the intended use case for
> regulator_get_optional().
Isn't the issue only whether the optional aspect of the regulator is
implemented by:
a) regulator_get_optional() returning failure, then the driver having to
check for that and either using or not-using the regulator.
b) regulator_get_optional() returning a dummy regulator automatically
when none is specified in DT or the regulator lookup table, and hence
the driver can always call regulator_enable/disable on the returned value.
next prev parent reply other threads:[~2013-09-10 4:14 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-09 10:29 [PATCH v3 0/2] Add power control for lm90 Wei Ni
2013-09-09 10:29 ` [PATCH v3 1/2] hwmon: (lm90) Add power control Wei Ni
2013-09-09 11:12 ` Mark Brown
2013-09-09 11:34 ` Guenter Roeck
2013-09-09 13:50 ` Mark Brown
2013-09-09 15:50 ` Guenter Roeck
2013-09-09 16:02 ` Mark Brown
2013-09-09 16:17 ` Guenter Roeck
2013-09-09 20:39 ` Mark Brown
2013-09-10 4:05 ` Wei Ni
2013-09-10 4:50 ` Guenter Roeck
2013-09-10 5:39 ` Wei Ni
2013-09-10 5:54 ` Guenter Roeck
2013-09-10 6:30 ` Wei Ni
2013-09-10 10:13 ` Mark Brown
2013-09-10 11:29 ` Wei Ni
2013-09-10 12:11 ` Mark Brown
2013-09-11 9:40 ` Wei Ni
2013-09-10 3:22 ` Wei Ni
2013-09-10 3:36 ` Guenter Roeck
2013-09-10 3:40 ` Stephen Warren
2013-09-10 3:53 ` Guenter Roeck
2013-09-10 4:12 ` Wei Ni
2013-09-10 4:13 ` Stephen Warren [this message]
2013-09-10 4:44 ` Guenter Roeck
2013-09-10 10:09 ` Mark Brown
2013-09-10 15:07 ` Stephen Warren
2013-09-10 17:04 ` Mark Brown
2013-09-10 17:44 ` Stephen Warren
2013-09-10 18:07 ` Guenter Roeck
2013-09-10 18:18 ` Mark Brown
2013-09-10 18:37 ` Stephen Warren
2013-09-10 18:52 ` Mark Brown
2013-09-11 11:35 ` Wei Ni
2013-09-10 17:05 ` Mark Brown
2013-09-09 10:29 ` [PATCH v3 2/2] Documentation: dt: hwmon: add OF document for LM90 Wei Ni
2013-09-09 10:52 ` Guenter Roeck
2013-09-09 22:14 ` Stephen Warren
2013-09-10 4:25 ` Wei Ni
2013-09-09 10:57 ` Ramkumar Ramachandra
2013-09-10 4:35 ` Wei Ni
2013-09-10 4:36 ` Wei Ni
2013-09-09 22:15 ` Stephen Warren
2013-09-09 22:23 ` Guenter Roeck
2013-09-10 4:25 ` Wei Ni
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