From patchwork Fri Mar 30 17:24:10 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Reichel X-Patchwork-Id: 10318209 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 04D5D60383 for ; Fri, 30 Mar 2018 17:25:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E945628739 for ; Fri, 30 Mar 2018 17:25:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DDD922A604; Fri, 30 Mar 2018 17:25:58 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 83FB528739 for ; Fri, 30 Mar 2018 17:25:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752651AbeC3RYj (ORCPT ); Fri, 30 Mar 2018 13:24:39 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:58950 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752431AbeC3RYg (ORCPT ); Fri, 30 Mar 2018 13:24:36 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: sre) with ESMTPSA id 32A6F260BD3 From: Sebastian Reichel To: Sebastian Reichel , Milo Kim , Lee Jones , Daniel Thompson , Rob Herring , Tony Lindgren Cc: Jingoo Han , Mark Rutland , linux-kernel@vger.kernel.org, linux-fbdev@vger.kernel.org, devicetree@vger.kernel.org, linux-omap@vger.kernel.org, Sebastian Reichel Subject: [PATCHv4 06/10] mfd: ti-lmu: add PWM support Date: Fri, 30 Mar 2018 19:24:10 +0200 Message-Id: <20180330172414.26575-7-sebastian.reichel@collabora.co.uk> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180330172414.26575-1-sebastian.reichel@collabora.co.uk> References: <20180330172414.26575-1-sebastian.reichel@collabora.co.uk> Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This adds support to acquire the optional PWM channel, that can be used by some of the LMU variants. Signed-off-by: Sebastian Reichel Acked-by: Pavel Machek --- drivers/mfd/ti-lmu.c | 11 +++++++++++ include/linux/mfd/ti-lmu.h | 3 +++ 2 files changed, 14 insertions(+) diff --git a/drivers/mfd/ti-lmu.c b/drivers/mfd/ti-lmu.c index ce16c896879b..f43b8acc30e1 100644 --- a/drivers/mfd/ti-lmu.c +++ b/drivers/mfd/ti-lmu.c @@ -183,6 +183,17 @@ static int ti_lmu_probe(struct i2c_client *cl, const struct i2c_device_id *id) return ret; } + lmu->pwm = devm_pwm_get(dev, "lmu-backlight"); + if (IS_ERR(lmu->pwm)) { + ret = PTR_ERR(lmu->pwm); + if (ret != -EINVAL) { + dev_err(dev, "Failed to get PWM: %d\n", ret); + return ret; + } + + lmu->pwm = NULL; + } + ret = ti_lmu_enable_hw(lmu, id->driver_data); if (ret) return ret; diff --git a/include/linux/mfd/ti-lmu.h b/include/linux/mfd/ti-lmu.h index 1ef51ed36be5..246ab5145dff 100644 --- a/include/linux/mfd/ti-lmu.h +++ b/include/linux/mfd/ti-lmu.h @@ -17,6 +17,7 @@ #include #include #include +#include /* Notifier event */ #define LMU_EVENT_MONITOR_DONE 0x01 @@ -77,12 +78,14 @@ enum lm363x_regulator_id { * @dev: Parent device pointer * @regmap: Used for i2c communcation on accessing registers * @en_gpio: GPIO for HWEN pin [Optional] + * @pwm: PWM for module [Optional] * @notifier: Notifier for reporting hwmon event */ struct ti_lmu { struct device *dev; struct regmap *regmap; struct gpio_desc *en_gpio; + struct pwm_device *pwm; struct blocking_notifier_head notifier; }; #endif