From patchwork Sat Jan 4 10:54:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Guido_G=C3=BCnther?= X-Patchwork-Id: 209226 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 858A0C32770 for ; Sat, 4 Jan 2020 10:55:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 64FD02464E for ; Sat, 4 Jan 2020 10:55:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726143AbgADKye (ORCPT ); Sat, 4 Jan 2020 05:54:34 -0500 Received: from honk.sigxcpu.org ([24.134.29.49]:40186 "EHLO honk.sigxcpu.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725861AbgADKye (ORCPT ); Sat, 4 Jan 2020 05:54:34 -0500 Received: from localhost (localhost [127.0.0.1]) by honk.sigxcpu.org (Postfix) with ESMTP id 803B2FB03; Sat, 4 Jan 2020 11:54:31 +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 RbqPPA8RJr8P; Sat, 4 Jan 2020 11:54:29 +0100 (CET) Received: by bogon.sigxcpu.org (Postfix, from userid 1000) id 1A9E849AA8; Sat, 4 Jan 2020 11:54:26 +0100 (CET) From: =?utf-8?q?Guido_G=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 2/9] leds: lm3692x: Allow to configure over voltage protection Date: Sat, 4 Jan 2020 11:54:18 +0100 Message-Id: <35d70c7802ff9efb6d6f83b402f4d26587ffbb9b.1578134779.git.agx@sigxcpu.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: References: MIME-Version: 1.0 Sender: linux-leds-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org Overvoltage protection is currently using the default of 29V. Make it configurable via DT. Signed-off-by: Guido Günther Acked-by: Pavel Machek --- drivers/leds/leds-lm3692x.c | 34 ++++++++++++++++++++++++++++++---- 1 file changed, 30 insertions(+), 4 deletions(-) diff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c index 8b408102e138..28973cc5a6cc 100644 --- a/drivers/leds/leds-lm3692x.c +++ b/drivers/leds/leds-lm3692x.c @@ -114,6 +114,8 @@ struct lm3692x_led { struct regulator *regulator; int led_enable; int model_id; + + u8 boost_ctrl; }; static const struct reg_default lm3692x_reg_defs[] = { @@ -249,10 +251,7 @@ static int lm3692x_init(struct lm3692x_led *led) if (ret) goto out; - ret = regmap_write(led->regmap, LM3692X_BOOST_CTRL, - LM3692X_BOOST_SW_1MHZ | - LM3692X_BOOST_SW_NO_SHIFT | - LM3692X_OCP_PROT_1_5A); + ret = regmap_write(led->regmap, LM3692X_BOOST_CTRL, led->boost_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; int ret; led->enable_gpio = devm_gpiod_get_optional(&led->client->dev, @@ -350,6 +350,32 @@ static int lm3692x_probe_dt(struct lm3692x_led *led) led->regulator = NULL; } + led->boost_ctrl = LM3692X_BOOST_SW_1MHZ | + LM3692X_BOOST_SW_NO_SHIFT | + LM3692X_OCP_PROT_1_5A; + ret = device_property_read_u32(&led->client->dev, + "ti,ovp-microvolt", &ovp); + if (ret) { + led->boost_ctrl |= LM3692X_OVP_29V; + } else { + switch (ovp) { + case 17000000: + break; + case 21000000: + led->boost_ctrl |= LM3692X_OVP_21V; + break; + case 25000000: + led->boost_ctrl |= LM3692X_OVP_25V; + break; + case 29000000: + led->boost_ctrl |= LM3692X_OVP_29V; + break; + default: + dev_err(&led->client->dev, "Invalid OVP %d\n", ovp); + return -EINVAL; + } + } + child = device_get_next_child_node(&led->client->dev, child); if (!child) { dev_err(&led->client->dev, "No LED Child node\n");