From patchwork Mon Jul 25 21:21:39 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Dooks X-Patchwork-Id: 593328 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B6CC6C43334 for ; Mon, 25 Jul 2022 21:22:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237292AbiGYVWZ (ORCPT ); Mon, 25 Jul 2022 17:22:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42766 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237178AbiGYVWP (ORCPT ); Mon, 25 Jul 2022 17:22:15 -0400 Received: from mail-wr1-x430.google.com (mail-wr1-x430.google.com [IPv6:2a00:1450:4864:20::430]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C6E09240B3 for ; Mon, 25 Jul 2022 14:22:12 -0700 (PDT) Received: by mail-wr1-x430.google.com with SMTP id q18so7273092wrx.8 for ; Mon, 25 Jul 2022 14:22:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=3ePtuqWqYPBhdJN8WEi4SlaJQh1A+CofKVMmsD2hEro=; b=flMATs9FfZNHejSZRDXownmgiZVQaZXXqj82E3QjGjUtLcgTr6HqgiMeUq9SUrUCsd dz6IgGaXEX/QZXYlFduIdfiprt8Vps5ATJ8aiM9/eCkuKj1uwEFhBOeSAAvzu4+kVev4 7gIz/z/MKHKYlTRVWVaZSDLDdA496tiGN9d9RO+l4ceTeIexNH2oLWY/rM66/N2JKRuU w0Ps6gBIWlNtb8s/X0Kp7F6NOiFMabjzrJhjac4Pv/BvFVinifJcOFpNgEG4TMshfQEt rOdT/K+CTQoCvs+fXx5TFsBcr0uBq/ny5sOffn/2dfMR7sFL9j9RnGXQF0VOpav7iewL U/Bw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=3ePtuqWqYPBhdJN8WEi4SlaJQh1A+CofKVMmsD2hEro=; b=7yw6rCogSmL1kvmp+mwF4oBLVxIeFrfxwPl1H/0sb5YHsm88DyPkBidH77k7hwKgZN Vz+Hmq5mOepCtO0mHpDuxZbza1Fe1qb9eqLuFTyu5pKgdYwRlQcyP4AbBQhPCoCls+yB IMK1NyoaYjHo6HQ4aiVG6+9SQdToT5KFmsY5MMFo3dp95FFmruENtBGcWSvm5nZXyERm nvi8PhmTLN02l2gpYhJoeOkhWFV9MntHZVNmqpo0tdaO3A96eaQPToVKgI5CAxdBAh+4 TvpT//rRcCJc7PpJNIylpZVkDptBCBcfsxoCpFhB7eZObtpyW+SyZzsQbE1wQIADYy2a tCjA== X-Gm-Message-State: AJIora/tvQM5HzaN5qIt+KnHgXjqAIXWV605Ad3p3coFO1r2T6TvvSut Wj3VtTV8JQYIviqIwPAj1sqcFg== X-Google-Smtp-Source: AGRyM1s2Cl3ll8cI3X1ZTYAsH2vBZ9VLfAjoQ6zdxqCDeWJMCSDZX/lOyLsRL5M0u4LIgABeI8gXKg== X-Received: by 2002:a5d:40d1:0:b0:21e:7596:65bf with SMTP id b17-20020a5d40d1000000b0021e759665bfmr7094282wrq.533.1658784131249; Mon, 25 Jul 2022 14:22:11 -0700 (PDT) Received: from localhost.localdomain (cpc152649-stkp13-2-0-cust121.10-2.cable.virginm.net. [86.15.83.122]) by smtp.gmail.com with ESMTPSA id i13-20020a05600011cd00b0021d6924b777sm12656348wrx.115.2022.07.25.14.22.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Jul 2022 14:22:10 -0700 (PDT) From: Ben Dooks To: linux-pwm@vger.kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Lee Jones , u.kleine-koenig@pengutronix.de, Thierry Reding , Krzysztof Kozlowski , Greentime Hu , Ben Dooks Subject: [[PATCH v2] 8/9] pwm: dwc: add snps,pwm-number to limit pwm count Date: Mon, 25 Jul 2022 22:21:39 +0100 Message-Id: <20220725212140.741644-8-ben.dooks@sifive.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220725212140.741644-1-ben.dooks@sifive.com> References: <20220725212140.741644-1-ben.dooks@sifive.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add snps,pwm-number property to indicate if the block does not have all 8 of the PWM blocks. Not sure if this should be a general PWM property consider optional for all PWM types, so have added a specific one here (there is only one other controller with a property for PWM count at the moment) Signed-off-by: Ben Dooks --- drivers/pwm/pwm-dwc.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/pwm/pwm-dwc.c b/drivers/pwm/pwm-dwc.c index 9067f32869f8..da325133d297 100644 --- a/drivers/pwm/pwm-dwc.c +++ b/drivers/pwm/pwm-dwc.c @@ -328,12 +328,20 @@ static int dwc_pwm_plat_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct dwc_pwm *dwc; + u32 nr_pwm; int ret; dwc = dwc_pwm_alloc(dev); if (!dwc) return -ENOMEM; + if (!device_property_read_u32(dev, "snps,pwm-number", &nr_pwm)) { + if (nr_pwm > DWC_TIMERS_TOTAL) + dev_err(dev, "too many PWMs specified (%d)\n", nr_pwm); + else + dwc->chip.npwm = nr_pwm; + } + dwc->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(dwc->base)) return dev_err_probe(dev, PTR_ERR(dwc->base),