On Wed, Oct 07, 2009 at 02:27:46PM +0200, Jean Delvare wrote: > On Wed, 07 Oct 2009 13:12:39 +0100, Jonathan Cameron wrote: > > ALS is the right place for this one. I've offered to do the port but > > haven't had > > a chance as yet. > > > > These light sensors are two slow to really require most of IIO. When you > > can get > > all data from a chip by polling at a couple hz life becomes somewhat easy! > > Also moving the tsl2561 out of iio and into ALS asap. > > > > Though I'm guessing ALS won't merge until next merge window opens. To my > > mind > > it's clean enough to merge now as a new 'driver' but I'm guessing as a > > subsystem > > this might not get past Linus. I'm not bothered about ditching the iio based > > tsl2561 immediately (as far as I know I'm the only user other than on boards > > for which I roll out the images anwyay - please yell if not!), > > but moving the tsl2550 will probably involve a few userspace api changes > > (to conform to what als expects), not to mention a change in location in > > sysfs. > > > > I've no idea how heavily used this driver is, so what do people reckon we > > do about > > about deprecating and removing the old driver? (the usual 2 kernel release > > or > > can we speed it up to finally get rid of that chips directory!) > > I am aware of 3 users for the tsl2550 driver (all Cc'd): Rodolfo > Giometti, who said 3 months ago that his hardware was now out of order, > Michele De Candia, and myself. As far as I am concerned, you can change > pretty much whatever you want as long as there is an easy way to read > the lux value from user-space. I'm using one TSL2550 for my own fun and > that's it. Don't know about Michele. > > I think we can simply move the driver and convert it directly, and > document the interface changes. I've always said loudly that the > tsl2550 driver was the first of its kind and as such its interface was > subject to change when other similar drivers would be added. Which is > what's happening right now.
I agree for a new userland API. I just proposed the simplest one currently available but any enhancement is welcomed. :) Ciao, Rodolfo -- GNU/Linux Solutions e-mail: [email protected] Linux Device Driver [email protected] Embedded Systems phone: +39 349 2432127 UNIX programming skype: rodolfo.giometti Freelance ICT Italia - Consulente ICT Italia - www.consulenti-ict.it -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
