From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8FD1FC2D0C2 for ; Sat, 4 Jan 2020 10:55:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6C9B72464E for ; Sat, 4 Jan 2020 10:55:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726205AbgADKyf (ORCPT ); Sat, 4 Jan 2020 05:54:35 -0500 Received: from honk.sigxcpu.org ([24.134.29.49]:40198 "EHLO honk.sigxcpu.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725796AbgADKyf (ORCPT ); Sat, 4 Jan 2020 05:54:35 -0500 Received: from localhost (localhost [127.0.0.1]) by honk.sigxcpu.org (Postfix) with ESMTP id 94FB9FB04; Sat, 4 Jan 2020 11:54:32 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at honk.sigxcpu.org Received: from honk.sigxcpu.org ([127.0.0.1]) by localhost (honk.sigxcpu.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6Cyi_4sgB2CE; Sat, 4 Jan 2020 11:54:31 +0100 (CET) Received: by bogon.sigxcpu.org (Postfix, from userid 1000) id 3546949AAB; Sat, 4 Jan 2020 11:54:26 +0100 (CET) From: =?UTF-8?q?Guido=20G=C3=BCnther?= To: Jacek Anaszewski , Pavel Machek , Dan Murphy , Rob Herring , Mark Rutland , linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 4/9] leds: lm3692x: Allow to configure brigthness mode Date: Sat, 4 Jan 2020 11:54:20 +0100 Message-Id: X-Mailer: git-send-email 2.23.0 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-leds-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org Brightness mode is currently hardcoded as linear in the driver. Make exponential mode configurable via DT. Signed-off-by: Guido Günther --- drivers/leds/leds-lm3692x.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c index 28973cc5a6cc..ff20560a8263 100644 --- a/drivers/leds/leds-lm3692x.c +++ b/drivers/leds/leds-lm3692x.c @@ -115,7 +115,7 @@ struct lm3692x_led { int led_enable; int model_id; - u8 boost_ctrl; + u8 boost_ctrl, brightness_ctrl; }; static const struct reg_default lm3692x_reg_defs[] = { @@ -267,8 +267,7 @@ static int lm3692x_init(struct lm3692x_led *led) if (ret) goto out; - ret = regmap_write(led->regmap, LM3692X_BRT_CTRL, - LM3692X_BL_ADJ_POL | LM3692X_RAMP_EN); + ret = regmap_write(led->regmap, LM3692X_BRT_CTRL, led->brightness_ctrl); if (ret) goto out; @@ -326,6 +325,7 @@ static int lm3692x_probe_dt(struct lm3692x_led *led) struct fwnode_handle *child = NULL; struct led_init_data init_data = {}; u32 ovp; + bool exp_mode; int ret; led->enable_gpio = devm_gpiod_get_optional(&led->client->dev, @@ -376,6 +376,12 @@ static int lm3692x_probe_dt(struct lm3692x_led *led) } } + led->brightness_ctrl = LM3692X_BL_ADJ_POL | LM3692X_RAMP_EN; + exp_mode = device_property_read_bool(&led->client->dev, + "ti,brightness-mapping-exponential"); + if (exp_mode) + led->brightness_ctrl |= LM3692X_MAP_MODE_EXP; + child = device_get_next_child_node(&led->client->dev, child); if (!child) { dev_err(&led->client->dev, "No LED Child node\n"); -- 2.23.0