From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Date: Thu, 18 Jul 2019 19:08:49 +0000 Subject: [PATCH] Enable backlight when trigger is activated Message-Id: <20190718190849.GA11409@amd> MIME-Version: 1 Content-Type: multipart/mixed; boundary="fUYQa+Pmc3FrFX/N" List-Id: To: kernel list , linux-arm-kernel , linux-omap@vger.kernel.org, tony@atomide.com, sre@kernel.org, nekit1000@gmail.com, mpartap@gmx.net, merlijn@wizzup.org, jacek.anaszewski@gmail.com, linux-leds@vger.kernel.org, b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org --fUYQa+Pmc3FrFX/N Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Configuring backlight trigger from dts results in backlight off during boot. Machine looks dead upon boot, which is not good. Fix that by enabling LED on trigger activation. Signed-off-by: Pavel Machek diff --git a/drivers/leds/trigger/ledtrig-backlight.c b/drivers/leds/trigge= r/ledtrig-backlight.c index 487577d..6e6bc78 100644 --- a/drivers/leds/trigger/ledtrig-backlight.c +++ b/drivers/leds/trigger/ledtrig-backlight.c @@ -114,6 +114,8 @@ static int bl_trig_activate(struct led_classdev *led) n->old_status =3D UNBLANK; n->notifier.notifier_call =3D fb_notifier_callback; =20 + led_set_brightness(led, LED_ON); + ret =3D fb_register_client(&n->notifier); if (ret) dev_err(led->dev, "unable to register backlight trigger\n"); @@ -126,6 +128,7 @@ static void bl_trig_deactivate(struct led_classdev *led) struct bl_trig_notifier *n =3D led_get_trigger_data(led); =20 fb_unregister_client(&n->notifier); + led_set_brightness(led, LED_OFF); kfree(n); } =20 --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --fUYQa+Pmc3FrFX/N Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAl0ww8EACgkQMOfwapXb+vI/hQCeO9FNCL2TmO9oZ8A7L2jg1y1R jvQAn1C6VabsEY2RJJWCWLOK9CshUbyu =aKee -----END PGP SIGNATURE----- --fUYQa+Pmc3FrFX/N--