From patchwork Sat Apr 29 10:45:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Artur Weber X-Patchwork-Id: 88865 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp1513257vqo; Sat, 29 Apr 2023 03:47:13 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ52t8eaO/xqmLX9bK0ABf3X/fjFWSbTvQJCVQ0WEPPs7r9yUoSgNhxesqbKbyUTk5kpHSCi X-Received: by 2002:a05:6a00:cd3:b0:63b:6d60:9a02 with SMTP id b19-20020a056a000cd300b0063b6d609a02mr11848086pfv.34.1682765233185; Sat, 29 Apr 2023 03:47:13 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1682765233; cv=none; d=google.com; s=arc-20160816; b=zQzGDhsdObptkiH/S0Y1WBJRt0m21jOmTwouUGyaApxwzAi1wx0SzhywzOPZbY61Ft uSknZDUhsvmI1XTkkpb/Nio//S9uTv6FLLba+s3OFtsIQvPqDjFakdoPQw2M9VIfvsNQ 3pKP0BrBo6PzLO+UOx3INzUzAUhfZwmfKQunogskpFTmeswJLs5QPJPY9KEna0//cdrt oEpiODhWuE8m5BgLzSch/srXnI5uV+NYLR/PGSM6sBV1g6VFnhK3kOtiFsQNeFktoVgN oAeVkdlQv+U/2lY0z51OuDC8vBZyyNchvzkLdugQWUpPh7vQFOov/c+M2DF4C3gxZXag Qdzg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=85dGX3BcJlsvsmIB6J26oSZoBGI3NIb+OIXm3X+ki1M=; b=NiOou5yFI6+N9QCZBGBpALoa81jU1Fx60l+R3Wkq19Bx1siSJDXj5DAs/Bk0Mo/4Ck x2tOeB3MQHLIdYotcXtKS78KnXdRmrdLbbhjBtlDqvPPr4+WqPRCgG6atpFh0rg1n+p6 2ha7rORj2TENF5zrkIokdDhk7soyGG33wbRjfigLtbv2ZEdUoaInNpLYMBhjD72r86I8 eERrH0nmh/RZUvifq0wNOxUZJuU14ZmwQLUQHltSHBELPNEBY0U0ABQHk5pQ/z1cvBN8 L6wJITac7yJym/ybNtxR3W8UFkpyQOTvxD+Eq8qDiy3UAIbChsE7y+mIpu/htmNCn4Be kUrA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20221208 header.b=SavQORTD; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id v10-20020a63610a000000b00528d90d40ddsi326661pgb.318.2023.04.29.03.47.01; Sat, 29 Apr 2023 03:47:13 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20221208 header.b=SavQORTD; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231259AbjD2KqE (ORCPT + 99 others); Sat, 29 Apr 2023 06:46:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51668 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229507AbjD2KqA (ORCPT ); Sat, 29 Apr 2023 06:46:00 -0400 Received: from mail-ej1-x633.google.com (mail-ej1-x633.google.com [IPv6:2a00:1450:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C7B481FCD; Sat, 29 Apr 2023 03:45:58 -0700 (PDT) Received: by mail-ej1-x633.google.com with SMTP id a640c23a62f3a-94f32588c13so115444266b.2; Sat, 29 Apr 2023 03:45:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1682765157; x=1685357157; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=85dGX3BcJlsvsmIB6J26oSZoBGI3NIb+OIXm3X+ki1M=; b=SavQORTDBSYuMf4NYpgxnmvNWIzE5CKP433xtRUMTq7J/Q6oYvGzI2G07vovknCplW aKOMKbde1U6gPNSmEhbHyKLXhY3Yz1V6wTf55xiuGHClESIuGM4+Jp6CD7HlgR9fc4uM hpiD6zq9LOb2Z2Lv3J8miwjq0WhyybIk76uNwYF3Su3lCyRwK0O/j4xDX+Xbvbh62um7 oho9YD5G2iVO9Z16716wKfe28m9CC7jgPAS8OZpNYRuvdeId/8LJBRwOTdSeK0teBJbE UtzF7qNFdOJHeMHjcJaYkZwpGeyZuZuagXqS8sQNyVI27SI3f+CcOMWS4cvUytTtoqxM U8kw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682765157; x=1685357157; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=85dGX3BcJlsvsmIB6J26oSZoBGI3NIb+OIXm3X+ki1M=; b=HMzUwZTSngxeGy53yv1K9FST9pUEV+vAlMGrPwXqJ95O5l8hD0kc/nLV2VXeJln4Ca pwwEYBUDT7swNpzQA+e9Qpl/3yCdN+efRlEXYBPzmkM0lVkzFpEdWD2CO23fjIAl/Qek lCtNIWl9D3MpR5r075iMRfzjLN34KVjdA5PUYeXWtRdUm7rMNNlp0pVm4Fj+eghpIU4Q e6UB0RS2GnHim0ydvvk2qQwCR1uP8uYCBsQH9EZpTri8gV9uYQT7N8Lb7T6PUN0//ZPM REyx5wv0AX//y+yZZAcbW5TGqmRPxaIYo5qPe+qkizfBDC03fAhxI+UM46QQ40m9sadt eD/A== X-Gm-Message-State: AC+VfDxQlD6FXaNPLikf9zSzrQSnjtTtf9UVdNC4JmlE3RtO75+54z40 mHMAUSJkINm5VpKuJEYuASE= X-Received: by 2002:a17:907:3e08:b0:94a:5c6d:3207 with SMTP id hp8-20020a1709073e0800b0094a5c6d3207mr7154482ejc.44.1682765157169; Sat, 29 Apr 2023 03:45:57 -0700 (PDT) Received: from localhost.my.domain (83.8.115.30.ipv4.supernova.orange.pl. [83.8.115.30]) by smtp.gmail.com with ESMTPSA id b11-20020a056402138b00b004bd6e3ed196sm9952522edv.86.2023.04.29.03.45.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 29 Apr 2023 03:45:56 -0700 (PDT) From: Artur Weber To: Lee Jones , Rob Herring , Krzysztof Kozlowski Cc: Daniel Thompson , Jingoo Han , Pavel Machek , Andy Gross , Bjorn Andersson , Konrad Dybcio , Thierry Reding , Jonathan Hunter , Helge Deller , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Artur Weber , dri-devel@lists.freedesktop.org, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-pwm@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht Subject: [PATCH 2/4] video: backlight: lp855x: get PWM for PWM mode during probe Date: Sat, 29 Apr 2023 12:45:32 +0200 Message-Id: <20230429104534.28943-3-aweber.kernel@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230429104534.28943-1-aweber.kernel@gmail.com> References: <20230429104534.28943-1-aweber.kernel@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1764507237300843934?= X-GMAIL-MSGID: =?utf-8?q?1764507237300843934?= Also deprecate the pwm-period DT property, as it is now redundant (pwms property already contains period value). Signed-off-by: Artur Weber --- drivers/video/backlight/lp855x_bl.c | 48 ++++++++++++++++------------- 1 file changed, 26 insertions(+), 22 deletions(-) diff --git a/drivers/video/backlight/lp855x_bl.c b/drivers/video/backlight/lp855x_bl.c index 81012bf29baf..21eb4943ed56 100644 --- a/drivers/video/backlight/lp855x_bl.c +++ b/drivers/video/backlight/lp855x_bl.c @@ -218,23 +218,10 @@ static int lp855x_configure(struct lp855x *lp) static void lp855x_pwm_ctrl(struct lp855x *lp, int br, int max_br) { - struct pwm_device *pwm; struct pwm_state state; - /* request pwm device with the consumer name */ - if (!lp->pwm) { - pwm = devm_pwm_get(lp->dev, lp->chipname); - if (IS_ERR(pwm)) - return; - - lp->pwm = pwm; - - pwm_init_state(lp->pwm, &state); - } else { - pwm_get_state(lp->pwm, &state); - } + pwm_get_state(lp->pwm, &state); - state.period = lp->pdata->period_ns; state.duty_cycle = div_u64(br * state.period, max_br); state.enabled = state.duty_cycle; @@ -339,6 +326,7 @@ static int lp855x_parse_dt(struct lp855x *lp) of_property_read_string(node, "bl-name", &pdata->name); of_property_read_u8(node, "dev-ctrl", &pdata->device_control); of_property_read_u8(node, "init-brt", &pdata->initial_brightness); + /* Deprecated, specify period in pwms property instead */ of_property_read_u32(node, "pwm-period", &pdata->period_ns); /* Fill ROM platform data if defined */ @@ -399,6 +387,7 @@ static int lp855x_probe(struct i2c_client *cl) const struct i2c_device_id *id = i2c_client_get_device_id(cl); const struct acpi_device_id *acpi_id = NULL; struct device *dev = &cl->dev; + struct pwm_state pwmstate; struct lp855x *lp; int ret; @@ -457,11 +446,6 @@ static int lp855x_probe(struct i2c_client *cl) } } - if (lp->pdata->period_ns > 0) - lp->mode = PWM_BASED; - else - lp->mode = REGISTER_BASED; - lp->supply = devm_regulator_get(dev, "power"); if (IS_ERR(lp->supply)) { if (PTR_ERR(lp->supply) == -EPROBE_DEFER) @@ -472,11 +456,31 @@ static int lp855x_probe(struct i2c_client *cl) lp->enable = devm_regulator_get_optional(dev, "enable"); if (IS_ERR(lp->enable)) { ret = PTR_ERR(lp->enable); - if (ret == -ENODEV) { + if (ret == -ENODEV) lp->enable = NULL; - } else { + else return dev_err_probe(dev, ret, "getting enable regulator\n"); - } + } + + lp->pwm = devm_pwm_get(lp->dev, lp->chipname); + if (IS_ERR(lp->pwm)) { + ret = PTR_ERR(lp->pwm); + if (ret == -ENODEV || ret == -EINVAL) + lp->pwm = NULL; + else + return dev_err_probe(dev, ret, "getting PWM\n"); + + lp->mode = REGISTER_BASED; + dev_dbg(dev, "mode: register based\n"); + } else { + pwm_init_state(lp->pwm, &pwmstate); + /* Legacy platform data compatibility */ + if (lp->pdata->period_ns > 0) + pwmstate.period = lp->pdata->period_ns; + pwm_apply_state(lp->pwm, &pwmstate); + + lp->mode = PWM_BASED; + dev_dbg(dev, "mode: PWM based\n"); } if (lp->supply) {