From nobody Fri Jan 2 11:56:22 2026 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 2B4CACDB46B for ; Wed, 11 Oct 2023 17:07:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346062AbjJKRH1 (ORCPT ); Wed, 11 Oct 2023 13:07:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39848 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232844AbjJKRHZ (ORCPT ); Wed, 11 Oct 2023 13:07:25 -0400 Received: from mail-pl1-x62a.google.com (mail-pl1-x62a.google.com [IPv6:2607:f8b0:4864:20::62a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 33375A4 for ; Wed, 11 Oct 2023 10:07:21 -0700 (PDT) Received: by mail-pl1-x62a.google.com with SMTP id d9443c01a7336-1c737d61a00so199645ad.3 for ; Wed, 11 Oct 2023 10:07:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1697044040; x=1697648840; darn=vger.kernel.org; h=mime-version:message-id:date:subject:cc:to:from:from:to:cc:subject :date:message-id:reply-to; bh=H0PgX4ulySSDgbY/pRhLOFcb1UkAUsYGV0Euv6lfMn0=; b=hIVzUYMI1nPSyU9lmdvE3M53efhQ9CjMwWDwSVuGI1N2DdSfaH12mKZ9iQ3QbcOM/o jotXNUx19lfPmF1fNIVNxsT18dTQclLYrl+rv603lum10gqfv57xXOhYLEo6id80oocs KMYJX/6KacHH4xoOp1maR1/Ep3yXmzNnoxWyY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697044040; x=1697648840; h=mime-version:message-id:date:subject:cc:to:from:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=H0PgX4ulySSDgbY/pRhLOFcb1UkAUsYGV0Euv6lfMn0=; b=ghFSY9jeTNaZBSUcBMpxNVmA1OGL3HgE8+bOMQPENwmjF92641BYpQc+5h+IlEb/lM hMSvPfFHwLXxKwfZg7yZ7Lnbmt+UNuJn4S2ic3UESVCI7ABhlwOqcY0GsHJxi/cMua/u 6q4a1SdZbaMWDgMbOZvytrnFP8CFTL+c411i7+viIEkdGbdAvBO1CinIVmVLWQz4PHG3 Fq+I4+LdoV2/+hKDwA2wKWf4BVEqhSqVn4GkFA3tPpSNf19C0fQoKJzID/pGoEnDtZal DWCZkjQxJlS8zQwjR+p8bHwmjfDLnJdjWEFIbH8jQMv4I/GPAqIdqLuLOvPJix22rbQr 1ONg== X-Gm-Message-State: AOJu0YwisxfA4g5BnvdoW0H+ZfcYz7Cy+VgFuVYiiupr/wJCy7eaEgzE czKrLDDY51LJnsu8B/6KPFU+6g== X-Google-Smtp-Source: AGHT+IGFIoD6cw81AoZHWrB0W82iGosieyFGM5kpZVeulD8u0rHAaTEvjtKzgvkjUkm4YgaGsaIcjg== X-Received: by 2002:a17:902:d883:b0:1c9:aac5:df1a with SMTP id b3-20020a170902d88300b001c9aac5df1amr6375926plz.51.1697044040521; Wed, 11 Oct 2023 10:07:20 -0700 (PDT) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id p6-20020a170902e74600b001c9c5a1b477sm68658plf.169.2023.10.11.10.07.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Oct 2023 10:07:19 -0700 (PDT) From: Florian Fainelli To: linux-pwm@vger.kernel.org Cc: Florian Fainelli , Angus Clark , Thierry Reding , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Ray Jui , Scott Branden , Broadcom internal kernel review list , linux-rpi-kernel@lists.infradead.org (moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE), linux-arm-kernel@lists.infradead.org (moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v3] pwm: bcm2835: Add support for suspend/resume Date: Wed, 11 Oct 2023 10:07:17 -0700 Message-Id: <20231011170717.3738712-1-florian.fainelli@broadcom.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="0000000000003a5747060773db2e" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --0000000000003a5747060773db2e Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Similar to other drivers, we need to make sure that the clock is disabled during suspend and re-enabled during resume. Reported-by: Angus Clark Signed-off-by: Florian Fainelli Reviewed-by: Uwe Kleine-K=C3=B6nig --- Changes in v3: - removed __maybe_unused and use pm_ptr() Changes in v2: - use DEFINE_SIMPLE_DEV_PM_OPS as suggested by Uwe drivers/pwm/pwm-bcm2835.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/pwm/pwm-bcm2835.c b/drivers/pwm/pwm-bcm2835.c index bdfc2a5ec0d6..21ed2f2ebdd0 100644 --- a/drivers/pwm/pwm-bcm2835.c +++ b/drivers/pwm/pwm-bcm2835.c @@ -182,6 +182,25 @@ static void bcm2835_pwm_remove(struct platform_device = *pdev) clk_disable_unprepare(pc->clk); } =20 +static int bcm2835_pwm_suspend(struct device *dev) +{ + struct bcm2835_pwm *pc =3D dev_get_drvdata(dev); + + clk_disable_unprepare(pc->clk); + + return 0; +} + +static int bcm2835_pwm_resume(struct device *dev) +{ + struct bcm2835_pwm *pc =3D dev_get_drvdata(dev); + + return clk_prepare_enable(pc->clk); +} + +static DEFINE_SIMPLE_DEV_PM_OPS(bcm2835_pwm_pm_ops, bcm2835_pwm_suspend, + bcm2835_pwm_resume); + static const struct of_device_id bcm2835_pwm_of_match[] =3D { { .compatible =3D "brcm,bcm2835-pwm", }, { /* sentinel */ } @@ -192,6 +211,7 @@ static struct platform_driver bcm2835_pwm_driver =3D { .driver =3D { .name =3D "bcm2835-pwm", .of_match_table =3D bcm2835_pwm_of_match, + .pm =3D pm_ptr(&bcm2835_pwm_pm_ops), }, .probe =3D bcm2835_pwm_probe, .remove_new =3D bcm2835_pwm_remove, --=20 2.34.1 --0000000000003a5747060773db2e Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQeQYJKoZIhvcNAQcCoIIQajCCEGYCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg3QMIIFDTCCA/WgAwIBAgIQeEqpED+lv77edQixNJMdADANBgkqhkiG9w0BAQsFADBMMSAwHgYD VQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UE AxMKR2xvYmFsU2lnbjAeFw0yMDA5MTYwMDAwMDBaFw0yODA5MTYwMDAwMDBaMFsxCzAJBgNVBAYT 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