[PATCH] Adding backlight support for the i915 driver.
This patch exposes the backlight support via a sysctl: set the backlight to 10%: # sysctl hw.dri.0.i915_backlight=10 hw.dri.0.i915_backlight: 25 -> 10 set the backlight to 50%: # sysctl hw.dri.0.i915_backlight=50 hw.dri.0.i915_backlight: 10 -> 50 decrease the current backlight value: # sysctl hw.dri.0.i915_backlight=-1000 hw.dri.0.i915_backlight: 50 -> 43 increment the current backlight value: # sysctl hw.dri.0.i915_backlight=1000 hw.dri.0.i915_backlight: 43 -> 51 # sysctl hw.dri.0.i915_backlight=1000 hw.dri.0.i915_backlight: 51 -> 60 I am running this path on for about a week without issue. This path can be found at: https://github.com/maurizio-emmex/i915_backlight_freebsd I thank Elizabeth Myers, elizabeth at interlinked dot me, for the idea of adding the backlight support for the i915 driver and for the original patch. Regards, Maurizio ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
Re: [PATCH] Adding backlight support for the i915 driver.
On 03/27/15 16:01, Ranjan1018 . wrote: This patch exposes the backlight support via a sysctl: set the backlight to 10%: # sysctl hw.dri.0.i915_backlight=10 hw.dri.0.i915_backlight: 25 -> 10 set the backlight to 50%: # sysctl hw.dri.0.i915_backlight=50 hw.dri.0.i915_backlight: 10 -> 50 decrease the current backlight value: # sysctl hw.dri.0.i915_backlight=-1000 hw.dri.0.i915_backlight: 50 -> 43 increment the current backlight value: # sysctl hw.dri.0.i915_backlight=1000 hw.dri.0.i915_backlight: 43 -> 51 # sysctl hw.dri.0.i915_backlight=1000 hw.dri.0.i915_backlight: 51 -> 60 I am running this path on for about a week without issue. This path can be found at: https://github.com/maurizio-emmex/i915_backlight_freebsd I thank Elizabeth Myers, elizabeth at interlinked dot me, for the idea of adding the backlight support for the i915 driver and for the original patch. Regards, Maurizio Maybe you want to use "CTLFLAG_RWTUN" so that it also can be set from /boot/loader.conf ? --HPS ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
Re: [PATCH] Adding backlight support for the i915 driver.
2015-03-27 16:53 GMT+01:00 Hans Petter Selasky : > On 03/27/15 16:01, Ranjan1018 . wrote: > >> This patch exposes the backlight support via a sysctl: >> >> set the backlight to 10%: >> >> # sysctl hw.dri.0.i915_backlight=10 >> >> hw.dri.0.i915_backlight: 25 -> 10 >> >> set the backlight to 50%: >> >> # sysctl hw.dri.0.i915_backlight=50 >> >> hw.dri.0.i915_backlight: 10 -> 50 >> >> decrease the current backlight value: >> >> # sysctl hw.dri.0.i915_backlight=-1000 >> >> hw.dri.0.i915_backlight: 50 -> 43 >> >> increment the current backlight value: >> >> # sysctl hw.dri.0.i915_backlight=1000 >> >> hw.dri.0.i915_backlight: 43 -> 51 >> >> # sysctl hw.dri.0.i915_backlight=1000 >> >> hw.dri.0.i915_backlight: 51 -> 60 >> >> I am running this path on for about a week without issue. >> >> This path can be found at: >> https://github.com/maurizio-emmex/i915_backlight_freebsd >> >> I thank Elizabeth Myers, elizabeth at interlinked dot me, for the idea of >> adding the backlight support for the i915 driver and for the original >> patch. >> >> Regards, >> Maurizio >> > > Maybe you want to use "CTLFLAG_RWTUN" so that it also can be set from > /boot/loader.conf ? > > --HPS > The ability to set the backlight at startup may be useful. With this new patch I expose two ways to do this: - with the tunable "drm.i915.init_backlight" in /boot/loader.conf, just after the driver initialization (eg. drm.i915.init_backlight=20) - with the OID "hw.dri.0.i915_backlight" in /etc/sysctl.conf as suggested by Hans I don’t know if setting the backlight with the tunable "drm.i915.init_backlight" is useful, but I have already written the code and is simple to remove it. The patch file is i915_backlight.patch at https://github.com/maurizio-emmex/i915_backlight_freebsd Regards, Maurizio ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
