From patchwork Fri Sep 8 15:35:57 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Romain Izard X-Patchwork-Id: 9944563 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 805DF6035D for ; Fri, 8 Sep 2017 15:39:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6FEF6287F5 for ; Fri, 8 Sep 2017 15:39:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 64B4B287FA; Fri, 8 Sep 2017 15:39:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.3 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RCVD_IN_SORBS_SPAM, T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0736C287F5 for ; Fri, 8 Sep 2017 15:39:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932448AbdIHPjJ (ORCPT ); Fri, 8 Sep 2017 11:39:09 -0400 Received: from mail-wr0-f195.google.com ([209.85.128.195]:34530 "EHLO mail-wr0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932183AbdIHPgV (ORCPT ); Fri, 8 Sep 2017 11:36:21 -0400 Received: by mail-wr0-f195.google.com with SMTP id k20so1411538wre.1; Fri, 08 Sep 2017 08:36:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=9beE8Cf39tr6tZRj5PuOk2crYg7vW204uQ0hp5zpIWs=; b=fxfysY/lEXiDbWbCRseZG/7PkmOctGpsH02X2EmNtjvE1Ntn9AYTr+uGo7xnbzFryp HgyQ3bZabNE3bCGFsE74wt6OpRdBwEPrXTwIuayrah9qMjJyXyM8Baubm4WKo/efpmSG SsNLHwCGY2c7StHZKuaG6hTo40ijFHP2zl91Eq2zbaYmfqGA17jwtWpCXmjS93/RM+uv 1t864x/7D4GeuxNC9LtWDhlhecTVYnMRIdNkQs0UkqlxGtuwUx1gudO1z3dH6ZmIB2yc gT65vmgIPB707dRpkkMo2vUr5AWlrc33CQLvNJwI/wbTa/EduonLd9GhHTgI+iaYU0Kn saGA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=9beE8Cf39tr6tZRj5PuOk2crYg7vW204uQ0hp5zpIWs=; b=RWQGgYplKAFynQNZVulJdjTsvr+knDXd3HJ/3qOcx+eodyPPljXMdUnhXn6EISyvEt Iv+w1N1qT41uPwMpHEuVDVxjjXgv/VelUy29+u/u0drfxnytGMwdZ7zeBqbnikEgANyh 6W9PXc5bW3AVTokJru3zIv6HDjBXT85BpdaIyMGweIN8Rin+tmikwboJx9bVU23s6D7k 9lgZcmVgXwkk21TI5w77ETgUJqh2QHvxJnmRdQ8o1yGaVBGx/MlP0Pp8q3fDgfnOMn0o vadgqS1vp1kRhXbuTOH0rAovtCaFuLyDd0JwYKd2JQYlCdh9TyTtLpDcRc3Wacl45M1U Oehw== X-Gm-Message-State: AHPjjUgmdBmLZj4qcUz5TKJQXRJdgKQ5gWrkOmfWJIZguExeEJzBp9zl lEevapEeAuRIIg== X-Google-Smtp-Source: ADKCNb4zDKdZlUxvWvNNAbhPe45hRJh6QAn8A+MXH5xh7Zuw4wzc8nzN+7814Q3NAxX9NkX+IzNskw== X-Received: by 10.223.183.133 with SMTP id s5mr2816650wre.145.1504884979413; Fri, 08 Sep 2017 08:36:19 -0700 (PDT) Received: from localhost.localdomain (146.187.3.109.rev.sfr.net. [109.3.187.146]) by smtp.gmail.com with ESMTPSA id p199sm1689224wmb.28.2017.09.08.08.36.17 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 08 Sep 2017 08:36:18 -0700 (PDT) From: Romain Izard To: Nicolas Ferre , Boris Brezillon , Michael Turquette , Stephen Boyd , Ludovic Desroches , Jonathan Cameron , Wenyou Yang , Josh Wu , David Woodhouse , Brian Norris , Marek Vasut , Cyrille Pitchen , Thierry Reding , Richard Genoud , Greg Kroah-Hartman , Alan Stern Cc: linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-mtd@lists.infradead.org, linux-pwm@vger.kernel.org, linux-serial@vger.kernel.org, linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Romain Izard , Romain Izard Subject: [PATCH v1 03/10] clk: at91: pmc: Support backup for programmable clocks Date: Fri, 8 Sep 2017 17:35:57 +0200 Message-Id: <20170908153604.28383-4-romain.izard.pro@gmail.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170908153604.28383-1-romain.izard.pro@gmail.com> References: <20170908153604.28383-1-romain.izard.pro@gmail.com> Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Romain Izard Save and restore the System Clock and Programmable Clock register for the backup use case. Signed-off-by: Romain Izard --- drivers/clk/at91/pmc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c index 07dc2861ad3f..5421b03553ec 100644 --- a/drivers/clk/at91/pmc.c +++ b/drivers/clk/at91/pmc.c @@ -66,6 +66,7 @@ static struct u32 pcr[PMC_MAX_IDS]; u32 audio_pll0; u32 audio_pll1; + u32 pckr[3]; } pmc_cache; void pmc_register_id(u8 id) @@ -103,6 +104,8 @@ static int pmc_suspend(void) regmap_read(pmcreg, AT91_PMC_PCR, &pmc_cache.pcr[registered_ids[i]]); } + for (i = 0; i < 3; i++) + regmap_read(pmcreg, AT91_PMC_PCKR(i), &pmc_cache.pckr[i]); return 0; } @@ -143,6 +146,8 @@ static void pmc_resume(void) pmc_cache.pcr[registered_ids[i]] | AT91_PMC_PCR_CMD); } + for (i = 0; i < 3; i++) + regmap_write(pmcreg, AT91_PMC_PCKR(i), pmc_cache.pckr[i]); if (pmc_cache.uckr & AT91_PMC_UPLLEN) mask |= AT91_PMC_LOCKU;