From: Andrew Chew Subject: [PATCH V3 0/2] Add mandatory regulator for all users of pwm-backlight. Date: Wed, 13 Mar 2013 15:33:24 -0700 Message-ID: <1363214006-10662-1-git-send-email-achew@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from hqemgate04.nvidia.com ([216.228.121.35]:5664 "EHLO hqemgate04.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755576Ab3CMWdK (ORCPT ); Wed, 13 Mar 2013 18:33:10 -0400 Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: peter.ujfalusi@ti.com Cc: thierry.reding@avionic-design.de, acourbot@nvidia.com, achew@nvidia.com, linux-omap@vger.kernel.org Many backlights are enabled via GPIO. We can generalize the GPIO to a fixed regulator. The enable regulator needs to be mandatory because there was no good way to determine the difference between opting out of the regulator, and probe deferral. This series of patches is intended to add a dummy regulator (or a GPIO regulator) for all users of the pwm-backlight. The last patch in the series will always be the pwm-backlight change to add this mandatory regulator. Patches following up to that patch add the mandatory regulator on a per mach family basis. Once all users of pwm-backlight have been patched, this series can be applied in order to maintain bisectability. Andrew Chew (2): ARM: OMAP: board-4430sdp: Provide regulator to pwm-backlight pwm_bl: Add mandatory backlight enable regulator .../bindings/video/backlight/pwm-backlight.txt | 14 +++++ arch/arm/mach-omap2/board-4430sdp.c | 5 ++ drivers/video/backlight/pwm_bl.c | 55 ++++++++++++++++---- 3 files changed, 64 insertions(+), 10 deletions(-) -- 1.7.9.5