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 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 205B0C00140 for ; Fri, 5 Aug 2022 11:12:07 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CCEC4B41F0; Fri, 5 Aug 2022 11:09:56 +0000 (UTC) Received: from mail-qt1-x831.google.com (mail-qt1-x831.google.com [IPv6:2607:f8b0:4864:20::831]) by gabe.freedesktop.org (Postfix) with ESMTPS id BB36AB3F9C for ; Fri, 5 Aug 2022 11:07:55 +0000 (UTC) Received: by mail-qt1-x831.google.com with SMTP id h7so1772020qtu.2 for ; Fri, 05 Aug 2022 04:07:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc; bh=xevi7s0+mr+ptfy7uVrWQvtAVkuN9tBhA8DON7VF3hc=; b=a9+SkJgUlA0b0/BHR/ZnCRMvTgWWiTfbn+7hCLvZBsaMMCRDTPxUJBAC7vZNjxq/vo k8OLi0uQ406lmhmpDT6bTA8Ln7hcqHBvrfJ6793g1OGhONtOUz8WZFu//S4D+ajPvm+/ HiavKm1cieEdFkxt1ha+nayBdzC2mzMdgbZG3PWagP1NkKBygX5opsEMSZg7lLxmqjo8 LBS37LwpObC3ROrIeGlDwWsw0zgdY3DWHlzFAJgr2ZjpMu5E7HGDXRWesXtLS8v9Z+Us O4BT37Ii/msU+LJssnGZn5Y8/ZMnoo5h2TyNnno4biJLWE9r//68n4cVGwG19hhQqWRQ N3Dg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc; bh=xevi7s0+mr+ptfy7uVrWQvtAVkuN9tBhA8DON7VF3hc=; b=JiHlam8RFoW+15GHHKs2Se9KMUchViFSSYft2JehTGdRqNzvE8H45klrF+aCoItG4P XuejAublnIW4EPWWkKr1YF7NFrHy3kB1drTXn7ZD/5csF0xuUwFG6izlL/GusIjTUaXb kNr4m1sONsfo7JFKN+ouQ5fW1ZIDkRRfuOMEJmDon5V2B0Yr03EvS7SDsMC8e835FNkd pQOFiehO+mvYJhSrQY+dvPIl20WG9gVy4Sw4FRrYG+sCTYbI306wWVPHHJTagen4DKCm kQROODLMeushBi66wGRTzjRbwAVsnjeUoZEz9R4dsDNVLf5iSrFHh8CrmrvQU6nxMDB1 AWTA== X-Gm-Message-State: ACgBeo08QAjYYs+6h4qlziIwMVFK1iTkupcNl+QX+RqCcGVpjKJulekz oOJDDkbN2OWDCUkHbLJ+vh+t6rtExGiRpxXFMTo= X-Google-Smtp-Source: AA6agR616g5NuJiBX7N2EN5Udk4icnJWQWfoN9qnVhTU27eNGicOdpHWiuxBhRNAeZcqXVc1r4KkqHm9jBQr5PV+ypI= X-Received: by 2002:ac8:5784:0:b0:31f:24e:93f5 with SMTP id v4-20020ac85784000000b0031f024e93f5mr5286928qta.429.1659697674792; Fri, 05 Aug 2022 04:07:54 -0700 (PDT) MIME-Version: 1.0 References: <20220805070610.3516-1-peterwu.pub@gmail.com> <20220805070610.3516-12-peterwu.pub@gmail.com> In-Reply-To: <20220805070610.3516-12-peterwu.pub@gmail.com> From: Andy Shevchenko Date: Fri, 5 Aug 2022 13:07:18 +0200 Message-ID: Subject: Re: [PATCH v7 11/13] leds: rgb: mt6370: Add MediaTek MT6370 current sink type LED Indicator support To: ChiaEn Wu Content-Type: text/plain; charset="UTF-8" X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "open list:FRAMEBUFFER LAYER" , "Krogerus, Heikki" , Krzysztof Kozlowski , Alice Chen , linux-iio , dri-devel , Liam Girdwood , cy_huang , Pavel Machek , Lee Jones , Linux LED Subsystem , Daniel Thompson , Helge Deller , Rob Herring , Chunfeng Yun , Guenter Roeck , devicetree , Linux PM , szuni chen , Mark Brown , "moderated list:ARM/Mediatek SoC support" , Matthias Brugger , linux-arm Mailing List , AngeloGioacchino Del Regno , Jingoo Han , USB , Sebastian Reichel , Linux Kernel Mailing List , ChiaEn Wu , Greg Kroah-Hartman , Jonathan Cameron Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Fri, Aug 5, 2022 at 9:07 AM ChiaEn Wu wrote: > > From: ChiYuan Huang > > The MediaTek MT6370 is a highly-integrated smart power management IC, > which includes a single cell Li-Ion/Li-Polymer switching battery > charger, a USB Type-C & Power Delivery (PD) controller, dual > Flash LED current sources, a RGB LED driver, a backlight WLED driver, > a display bias driver and a general LDO for portable devices. > > Add a support for the MediaTek MT6370 Current Sink Type LED Indicator Add support (This is also for all other commit messages) > driver. It can control four channels current-sink RGB LEDs with 3 modes, 3 modes: > constant current, PWM, and breath mode. ... > +static int mt6370_gen_breath_pattern(struct mt6370_priv *priv, > + struct led_pattern *pattern, u32 len, > + u8 *pattern_val, u32 val_len) > +{ > + enum mt6370_led_ranges sel_range; > + struct led_pattern *curr; > + unsigned int sel; > + u32 val = 0; > + int i; > + > + if (len < P_MAX_PATTERNS && val_len < P_MAX_PATTERNS / 2) > + return -EINVAL; > + > + /* > + * Pattern list > + * tr1: byte 0, b'[7: 4] > + * tr2: byte 0, b'[3: 0] > + * tf1: byte 1, b'[7: 4] > + * tf2: byte 1, b'[3: 0] > + * ton: byte 2, b'[7: 4] > + * toff: byte 2, b'[3: 0] > + */ > + for (i = 0; i < P_MAX_PATTERNS; i++) { > + curr = pattern + i; > + > + sel_range = i == P_LED_TOFF ? R_LED_TOFF : R_LED_TRFON; > + > + linear_range_get_selector_within(priv->ranges + sel_range, > + curr->delta_t, &sel); > + > + val <<= i % 2 == 0 ? 8 : 0; > + val |= sel << (i % 2 == 0 ? 4 : 0); It's too cryptic, why not simply: if (i % 2) { val |= sel; } else { val <<= 8; val |= sel << 4; } ? > + } > + > + put_unaligned_be24(val, pattern_val); > + > + return 0; > +} ... > + const char * const states[] = { "off", "keep", "on" }; > + ret = fwnode_property_read_string(init_data->fwnode, "default-state", > + &stat_str); > + if (!ret) { > + ret = match_string(states, ARRAY_SIZE(states), stat_str); > + if (ret < 0) > + ret = STATE_OFF; > + > + led->default_state = ret; > + } Replace this by using led_init_default_state_get(). -- With Best Regards, Andy Shevchenko