Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1629275
| From | Pavel Machek <pavel@ucw.cz> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] led: ledtrig-transient: replace timer_list with hrtimer |
| Date | 2017-04-24 09:50 +0200 |
| Message-ID | <tzGUW-48t-9@gated-at.bofh.it> (permalink) |
| References | <tzE6J-2cz-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
[Multipart message — attachments visible in raw view] - view raw
On Sun 2017-04-23 21:42:54, David Lin wrote: > This patch replaces the kernel timer used by led transient trigger as an > one-shot timer with an hrtimer. As Android is moving away from the > obsoleted timed_output to ledtrig-transient for the vibrator HAL, > ledtrig-transient needs to be able to handle the "duration" property to > millisecond precision as modern haptic actuators can be driven in > precisely one cycle (~1 ms) in order to provide a crisp and subtle > feedback. (Insert rant about using LED subsystem for something that is not a LED; if we are going to these subtleties, LEDs _do_ have different properties than vibration motor...). Otherwise it looks good. Acked-by: Pavel Machek <pavel@ucw.cz> Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
[PATCH] led: ledtrig-transient: replace timer_list with hrtimer David Lin <dtwlin@google.com> - 2017-04-24 06:50 +0200
Re: [PATCH] led: ledtrig-transient: replace timer_list with hrtimer Pavel Machek <pavel@ucw.cz> - 2017-04-24 09:50 +0200
Re: [PATCH] led: ledtrig-transient: replace timer_list with hrtimer Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-04-24 22:10 +0200
Re: [PATCH] led: ledtrig-transient: replace timer_list with hrtimer Pavel Machek <pavel@ucw.cz> - 2017-04-24 22:20 +0200
csiph-web