From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933844AbbI1NH4 (ORCPT ); Mon, 28 Sep 2015 09:07:56 -0400 Received: from mailout2.samsung.com ([203.254.224.25]:59190 "EHLO mailout2.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933817AbbI1NHx (ORCPT ); Mon, 28 Sep 2015 09:07:53 -0400 X-AuditID: cbfee61a-f79a06d000005c6f-d6-56093ba76c95 From: Jacek Anaszewski To: linux-leds@vger.kernel.org Cc: linux-kernel@vger.kernel.org, sakari.ailus@linux.intel.com, andrew@lunn.ch, rpurdie@rpsys.net, Jacek Anaszewski Subject: [PATCH v2 08/12] Documentation: leds: Add description of brightness setting API Date: Mon, 28 Sep 2015 15:07:17 +0200 Message-id: <1443445641-9529-9-git-send-email-j.anaszewski@samsung.com> X-Mailer: git-send-email 1.7.9.5 In-reply-to: <1443445641-9529-1-git-send-email-j.anaszewski@samsung.com> References: <1443445641-9529-1-git-send-email-j.anaszewski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFuphluLIzCtJLcpLzFFi42I5/e+xoO5ya84wg/Pn1C3O3z3EbNF79Tmj xeVdc9gstr5Zx2ixe9dTVotPW74xObB5zDsZ6LFzx2cmjz3zf7B69G1ZxejxeZNcAGsUl01K ak5mWWqRvl0CV0b3sn62gq2cFf9uyTUwPmTvYuTgkBAwkehakNPFyAlkiklcuLeerYuRi0NI YBajRN+936wQzk9GicY/t9hBqtgEDCV+vnjNBNIsIiAnsfNMJUiYWWACo8TUi+IgtrBAlMTJ g91g5SwCqhIr7xwB28Ur4C5x74g7xFoFiTmTbEAqOAU8JNZ/72YCsYWAKh7uPs82gZF3ASPD KkaJ1ILkguKk9FzDvNRyveLE3OLSvHS95PzcTYzgMHomtYPx4C73Q4wCHIxKPLwfNTnChFgT y4orcw8xSnAwK4nwOolyhgnxpiRWVqUW5ccXleakFh9ilOZgURLnvXGIIUxIID2xJDU7NbUg tQgmy8TBKdXAKFmxfPeT4ANL3Hc4nStUq++T9F91XWzdIn+LjKAtmZYZh9dd8Nh13t1G2S9+ cf+V4uz7plzr/Jh6nvJYHNyw+0bWs3+qd2Q3aB9d6/XIuj9QJ3zjqw1Z621nf5Tf2L2n8Oy/ BcsfyetMMi+euOlp53cbB80PG9ebFt8SLaqUUmXlujf35GurjUosxRmJhlrMRcWJAFZNBWkf AgAA Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds description of the LED subsystem API for setting an LED brightness. Signed-off-by: Jacek Anaszewski --- Documentation/leds/leds-class.txt | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/Documentation/leds/leds-class.txt b/Documentation/leds/leds-class.txt index 62261c0..d406d98 100644 --- a/Documentation/leds/leds-class.txt +++ b/Documentation/leds/leds-class.txt @@ -52,6 +52,19 @@ above leaves scope for further attributes should they be needed. If sections of the name don't apply, just leave that section blank. +Brightness setting API +====================== + +LED subsystem core exposes following API for setting brightness: + + - led_set_brightness : it is guaranteed not to sleep, passing LED_OFF stops + blinking, + - led_set_brightness_sync : for use cases when immediate effect is desired - + it can block the caller for the time required for accessing + device registers and can sleep, passing LED_OFF stops hardware + blinking, returns -EBUSY if software blink fallback is enabled. + + Hardware accelerated blink of LEDs ================================== -- 1.7.9.5