From: Todd Poynor <tpoynor@mvista.com>
To: Andrew Zabolotny <zap@homelink.ru>
Cc: linux-kernel@vger.kernel.org, Greg KH <greg@kroah.com>
Subject: Re: two patches - request for comments
Date: Fri, 28 May 2004 14:59:53 -0700 [thread overview]
Message-ID: <40B7B659.9010507@mvista.com> (raw)
In-Reply-To: <20040529012030.795ad27e.zap@homelink.ru>
Hi, you're adding new interfaces for power management of LCD and
backlight devices. Since there's already LDM/sysfs interfaces for
reading and writing power state of generic devices, is it necessary to
add ones particular to these devices or device classes? In other words,
is /sys/devices/<bus>/<device>/power/state not suitable for these purposes?
And if a PM interface for device classes is needed that ties into the
device driver suspend/resume callbacks, perhaps it can be modeled more
closely on the existing interfaces? These new interfaces seem to be
intended to define: 0 == power off, 1 == power on. The existing
ACPI-inspired interfaces use: 0 == power on/full-power, 1/2/3/4 ==
low-power/off state.
New files don't have GPL license comments.
--
Todd
next prev parent reply other threads:[~2004-05-28 22:00 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-28 21:20 two patches - request for comments Andrew Zabolotny
2004-05-28 21:59 ` Todd Poynor [this message]
2004-05-29 8:10 ` Andrew Zabolotny
2004-06-01 20:09 ` Todd Poynor
2004-06-01 21:00 ` Andrew Zabolotny
2004-06-02 17:15 ` Greg KH
2004-06-02 21:25 ` Andrew Zabolotny
2004-06-02 21:32 ` Russell King
2004-06-04 20:43 ` Greg KH
2004-05-28 22:10 ` Greg KH
2004-05-29 8:44 ` Andrew Zabolotny
2004-06-01 21:23 ` Jeff Garzik
2004-06-01 21:57 ` Andrew Zabolotny
2004-06-02 17:12 ` Greg KH
2004-05-29 13:46 ` Denis Vlasenko
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