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Groups > linux.kernel > #1731753
| From | David Lin <dtwlin@google.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer |
| Date | 2017-09-13 20:00 +0200 |
| Message-ID | <upk77-227-1@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
Hi, These patch series add the LED_BRIGHTNESS_FAST flag support for ledtrig-transient to use hrtimer so that platforms with high-resolution timer support can have better accuracy in the trigger duration timing. The need for this support is driven by the fact that Android has removed the timed_ouput [1] and is now using led-trigger for handling vibrator control which requires the timer to be accurate up to a millisecond. However, this flag support would also allow hrtimer to co-exist with the ktimer without causing warning to the existing drivers [2]. David [1] https://patchwork.kernel.org/patch/8664831/ [2] https://lkml.org/lkml/2015/4/28/260 Changes from v1 to v2: - Convert all the bit shifting flag in leds.h to use the BIT macro. - Removed inline modifiers for the timer helper function. David Lin (3): leds: Replace flags bit shift with BIT() macros leds: Add the LED_BRIGHTNESS_FAST flag led: ledtrig-transient: add support for hrtimer Documentation/leds/leds-class.txt | 5 +++ drivers/leds/trigger/ledtrig-transient.c | 59 +++++++++++++++++++++++++++++--- include/linux/leds.h | 19 +++++----- 3 files changed, 69 insertions(+), 14 deletions(-) -- 2.14.1.581.gf28d330327-goog
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[PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer David Lin <dtwlin@google.com> - 2017-09-13 20:00 +0200
[PATCH v2 2/3] leds: Add the LED_BRIGHTNESS_FAST flag David Lin <dtwlin@google.com> - 2017-09-13 20:00 +0200
[PATCH v2 3/3] led: ledtrig-transient: add support for hrtimer David Lin <dtwlin@google.com> - 2017-09-13 20:00 +0200
[PATCH v2 1/3] leds: Replace flags bit shift with BIT() macros David Lin <dtwlin@google.com> - 2017-09-13 20:00 +0200
Re: [PATCH v2 1/3] leds: Replace flags bit shift with BIT() macros Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-09-14 21:50 +0200
Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Pavel Machek <pavel@ucw.cz> - 2017-09-13 22:30 +0200
Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer David Lin <dtwlin@google.com> - 2017-09-13 23:30 +0200
Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Pavel Machek <pavel@ucw.cz> - 2017-09-13 23:40 +0200
Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer David Lin <dtwlin@google.com> - 2017-09-14 19:40 +0200
Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Pavel Machek <pavel@ucw.cz> - 2017-09-14 21:50 +0200
Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-09-14 21:40 +0200
Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer David Lin <dtwlin@google.com> - 2017-09-14 21:40 +0200
Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-09-14 22:10 +0200
Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Pavel Machek <pavel@ucw.cz> - 2017-09-14 23:00 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2017-09-15 20:40 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-09-16 00:00 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2017-09-16 00:40 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-09-17 18:50 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Pavel Machek <pavel@ucw.cz> - 2017-09-17 20:30 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Pavel Machek <pavel@ucw.cz> - 2017-09-17 23:20 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-09-18 23:00 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2017-09-19 00:30 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-09-19 22:50 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2017-09-19 23:10 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-09-20 21:40 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Pavel Machek <pavel@ucw.cz> - 2017-09-20 13:30 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-09-20 22:10 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Pavel Machek <pavel@ucw.cz> - 2017-09-20 13:30 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Pavel Machek <pavel@ucw.cz> - 2017-09-16 15:10 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-09-16 00:00 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Pavel Machek <pavel@ucw.cz> - 2017-09-16 14:40 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-09-17 18:50 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Pavel Machek <pavel@ucw.cz> - 2017-09-17 20:00 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-09-18 22:50 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Pavel Machek <pavel@ucw.cz> - 2017-09-20 13:20 +0200
Re: Vibrations in input vs. LED was Re: [PATCH v2 0/3] led: ledtrig-transient: add support for hrtimer Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-09-20 20:50 +0200
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