From patchwork Tue Aug 16 21:14:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Dooks X-Patchwork-Id: 1667020 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pwm-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=sifive.com header.i=@sifive.com header.a=rsa-sha256 header.s=google header.b=YTgW1xsI; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4M6kSz61YRz1ygQ for ; Wed, 17 Aug 2022 07:15:31 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237558AbiHPVPa (ORCPT ); Tue, 16 Aug 2022 17:15:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54842 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237564AbiHPVPW (ORCPT ); Tue, 16 Aug 2022 17:15:22 -0400 Received: from mail-wr1-x42f.google.com (mail-wr1-x42f.google.com [IPv6:2a00:1450:4864:20::42f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3403B7E805 for ; Tue, 16 Aug 2022 14:15:05 -0700 (PDT) Received: by mail-wr1-x42f.google.com with SMTP id bs25so14079506wrb.2 for ; Tue, 16 Aug 2022 14:15:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc; bh=vfBwzF4rBTQWX76kzjBGU8pHOvCFE0ZGsFmgL4Ysnj8=; b=YTgW1xsIf6ErLzD2iA8TpuGl1vu1Jg42HLk63//faqV0F0fGxWnr8xyqH4xhxe6GMM jkXIZPysqJ4iIQEKHm26iMOIp0zNxHP6T5eoPabQlsrh11ohV/jjX0ZI7LTeRGiQ20kI 2afGCx3PzyvpI6PWWEdsf8kmYHO1vzWqyOAPVkQ3rL/YnJYyHhU9CMX3J+IqvMS2ht/g qz0jkwPpqrmR8bt581eEdjqe0PkcYhuX69DkBXsreoxkBYhVVoRtU6qvQRjN4DchphpT B9VEJVdoI1guO9Flxt7ivU2j4GdqaILVHiJVyc65NPsUEobDvW6ThpolTeAbpRh6ALQG X7jQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc; bh=vfBwzF4rBTQWX76kzjBGU8pHOvCFE0ZGsFmgL4Ysnj8=; b=1FA7OXc4P6nElvxkmnESgfEv+1d3ETeUOibT6p/tv5akA16rmFC/oAvBwkYmsfVwet 3cizqREyGx3k4mw8fO9vG/aUL+/r5kEVRasEJcND2urU+IhKdo+gS3bIIBHHDtt5VPjB aaDohoWgwd4KEPZVlO8jvAYWhgxvGUzS3kQrwSP0m/GY8+71VC32gATXSGDjHBKXfG35 I5I+xoqItCCV7CieIli96YJFqbZZUn+dXpA57CUvGKjI9QkGc1BVRkwKaOZ58KrqZ8Ti oHDnFDJ6aq/kQvu5u1t7HxX7H/91e7gca0gfFgdNayxH+7ulP4yA6Mogv4NWQxBQEDe3 bcdg== X-Gm-Message-State: ACgBeo0kt/By7sSC19pYnWjQgnArM5MgdD4+jqevYSfr5E5S1yLAfz+C SmbAFOmLtlvTOw6EZOJFyysCxIx5Fr9U9w== X-Google-Smtp-Source: AA6agR5yZXOyGj6Ixhwe3p4B5VxRBMFdbaBa9BYBCEq36I0L5rcwum9l7q5l5QZuw2rYF7R1IC+Luw== X-Received: by 2002:a05:6000:1545:b0:220:61fa:64a with SMTP id 5-20020a056000154500b0022061fa064amr13124840wry.174.1660684503637; Tue, 16 Aug 2022 14:15:03 -0700 (PDT) Received: from rainbowdash.office.codethink.co.uk ([167.98.27.226]) by smtp.gmail.com with ESMTPSA id r4-20020a1c4404000000b003a3170a7af9sm23913wma.4.2022.08.16.14.15.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Aug 2022 14:15:03 -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 , jarkko.nikula@linux.intel.com, William Salmon , Jude Onyenegecha , Ben Dooks Subject: [RFC v4 09/10] pwm: dwc: add snps,pwm-number to limit pwm count Date: Tue, 16 Aug 2022 22:14:53 +0100 Message-Id: <20220816211454.237751-10-ben.dooks@sifive.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220816211454.237751-1-ben.dooks@sifive.com> References: <20220816211454.237751-1-ben.dooks@sifive.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,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-pwm@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-of.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/pwm/pwm-dwc-of.c b/drivers/pwm/pwm-dwc-of.c index d18fac287325..65c7e6621bba 100644 --- a/drivers/pwm/pwm-dwc-of.c +++ b/drivers/pwm/pwm-dwc-of.c @@ -21,12 +21,20 @@ 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),