Hi, > -----Original Message----- > From: Wei Ni [mailto:w...@nvidia.com] > Sent: Thursday, July 12, 2012 3:53 PM > To: Zhang, Rui; Brown, Len; a...@linux-foundation.org; kh...@linux-fr.org; > j...@perches.com; R, Durgadoss > Cc: linux-kernel@vger.kernel.org; linux-te...@ger.kernel.org; > acour...@nvidia.com > Subject: How to use the generic thermal sysfs. > > Hi, all > I'm working on the tegra thermal throttling upstream issue. > The tegra30 board use the nct1008 as the thermal sensor, and the lm90 is > the sensor driver. We want to use the generic thermal sysfs. > > My question is where should we register the thermal zone device? We may > have two place to do it: > 1. register it in the sensor driver, such as lm90.c > In this way, the sensor driver doesn't need to export any APIs, such as > get_temp.
This approach is preferred. > 2. register in my tegra thermal framework. > In this way, the sensor driver need to export some APIs, which are used > to register the ops and do any other things. What do you mean by "my tegra thermal framework" ? Where does the source file for this sit in the mainline kernel ? > > How should I do it? > > And in current codes, there have the event notification, in the form of > a netlink event. But it's difficult to be used in the kernel, it's > normally for the communication with user-space. How about to add a > notify call chain for it? So when the sensor has irq alert, it can send > a notify to my thermal framework in kernel. We are working on a notification API from any generic sensor driver to the thermal framework. Please have a look at the 'notify_thermal_framework' API in the patch here: http://www.spinics.net/lists/linux-acpi/msg36049.html Thanks, Durga
