From patchwork Sun Aug 29 15:47:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 504132 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 32430C3F6A3 for ; Sun, 29 Aug 2021 15:48:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1562E61038 for ; Sun, 29 Aug 2021 15:48:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235696AbhH2Ps5 (ORCPT ); Sun, 29 Aug 2021 11:48:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53160 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235676AbhH2Psz (ORCPT ); Sun, 29 Aug 2021 11:48:55 -0400 Received: from mail-lj1-x22a.google.com (mail-lj1-x22a.google.com [IPv6:2a00:1450:4864:20::22a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2EFE4C061575 for ; Sun, 29 Aug 2021 08:48:03 -0700 (PDT) Received: by mail-lj1-x22a.google.com with SMTP id s3so21258037ljp.11 for ; Sun, 29 Aug 2021 08:48:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=uAcFEY+E0qmgNU+cIgtsjckvcJT9e5o7gZcnimCS7qE=; b=txsSBxfFz3uME9EGWLKsPisD83NoqkW3PVZXnetyTCer1e+GSgMWMqq7SAD4ZUJa8I TvwG1N0kBLFhSg7gEzUYf+eieOVTCRzMza6Uje55n4Zilr76DyeS/doFV/8xEa4xBZWw v0tNqrwaCfRBsg+/e1rmKntNVjm0iZEvyunpzFyVvJTmq0zn9d8FHzZ/C4ZBbhjVjmV1 /Hr8hi8gVwPM32KXdYL4yDYTwsOOVpDpUANtgfh+GzYh50EllusbX+yCyi3dw7Vc3Vsp F8B+TB84Mx0ulR7Az3eKnBf4L5SDD9T1fbyg44b9XKV1ucec2bvPktai9NMl+EkCpDj7 nJrg== 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:mime-version:content-transfer-encoding; bh=uAcFEY+E0qmgNU+cIgtsjckvcJT9e5o7gZcnimCS7qE=; b=sygw8x9TghZFYMPxmC2EXKCeNWWYy6DKxGEW+Gz8qf+P213HorTiYhteDqlzl1DWvh LDUzLogapoovpcqvBUyhIc1VRPuLI/+cYI0pIm5G9xAZpYC4f2GhZxbXXJnuNcqhWjK+ 405Y2UeFIcLAGnZhtccAGH7JmW0Wkkqv/IRBaTxy0GwyIUo5tRjO2ib7+CtQLcdnG8RF 00Toysk6iqqqS982JXKgR/nFxZYT13S/Isf8gOM7g58fcp18KA8v1JDWzIYwHh6NHQ+7 HkasdA7+nBCg9qiiUXVK4MYL/WdCjWfk9abdK0m1msYKNGcg3AUWcXmHrfa3cLXde2xH cnng== X-Gm-Message-State: AOAM533T6TGKlRbZzFSQECtiyH+MLjGLaP2lF41GHvV2nP0cUzz93iuZ SXcoDl4SLIPtpyM+uiJ14yjTHg== X-Google-Smtp-Source: ABdhPJxh6ttGvJTuKrUIAct+s3sIoQe21OrLpijFoCP5JmFHSJh2yRJsONxu3oyPpABJLDKFO5PnMw== X-Received: by 2002:a2e:a785:: with SMTP id c5mr16291427ljf.434.1630252081609; Sun, 29 Aug 2021 08:48:01 -0700 (PDT) Received: from eriador.lan ([37.153.55.125]) by smtp.gmail.com with ESMTPSA id y5sm1481243ljd.38.2021.08.29.08.48.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 29 Aug 2021 08:48:01 -0700 (PDT) From: Dmitry Baryshkov To: Andy Gross , Bjorn Andersson , Rob Herring , Stephen Boyd , Taniya Das , Jonathan Marek , Michael Turquette Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-clk@vger.kernel.org, Bryan O'Donoghue , Mark Brown , Ulf Hansson , linux-kernel@vger.kernel.org Subject: [PATCH v7 3/8] clk: qcom: dispcc-sm8250: use runtime PM for the clock controller Date: Sun, 29 Aug 2021 18:47:52 +0300 Message-Id: <20210829154757.784699-4-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210829154757.784699-1-dmitry.baryshkov@linaro.org> References: <20210829154757.784699-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On sm8250 dispcc and videocc registers are powered up by the MMCX power domain. Use runtime PM calls to make sure that required power domain is powered on while we access clock controller's registers. Signed-off-by: Dmitry Baryshkov Reviewed-by: Bjorn Andersson --- drivers/clk/qcom/dispcc-sm8250.c | 27 +++++++++++++++++++++++++-- 1 file changed, 25 insertions(+), 2 deletions(-) diff --git a/drivers/clk/qcom/dispcc-sm8250.c b/drivers/clk/qcom/dispcc-sm8250.c index 601c7c0ba483..108dd1249b6a 100644 --- a/drivers/clk/qcom/dispcc-sm8250.c +++ b/drivers/clk/qcom/dispcc-sm8250.c @@ -6,6 +6,7 @@ #include #include #include +#include #include #include @@ -1226,13 +1227,31 @@ static const struct of_device_id disp_cc_sm8250_match_table[] = { }; MODULE_DEVICE_TABLE(of, disp_cc_sm8250_match_table); +static void disp_cc_sm8250_pm_runtime_disable(void *data) +{ + pm_runtime_disable(data); +} + static int disp_cc_sm8250_probe(struct platform_device *pdev) { struct regmap *regmap; + int ret; + + pm_runtime_enable(&pdev->dev); + + ret = devm_add_action_or_reset(&pdev->dev, disp_cc_sm8250_pm_runtime_disable, &pdev->dev); + if (ret) + return ret; + + ret = pm_runtime_resume_and_get(&pdev->dev); + if (ret) + return ret; regmap = qcom_cc_map(pdev, &disp_cc_sm8250_desc); - if (IS_ERR(regmap)) + if (IS_ERR(regmap)) { + pm_runtime_put(&pdev->dev); return PTR_ERR(regmap); + } /* note: trion == lucid, except for the prepare() op */ BUILD_BUG_ON(CLK_ALPHA_PLL_TYPE_TRION != CLK_ALPHA_PLL_TYPE_LUCID); @@ -1257,7 +1276,11 @@ static int disp_cc_sm8250_probe(struct platform_device *pdev) /* DISP_CC_XO_CLK always-on */ regmap_update_bits(regmap, 0x605c, BIT(0), BIT(0)); - return qcom_cc_really_probe(pdev, &disp_cc_sm8250_desc, regmap); + ret = qcom_cc_really_probe(pdev, &disp_cc_sm8250_desc, regmap); + + pm_runtime_put(&pdev->dev); + + return ret; } static struct platform_driver disp_cc_sm8250_driver = {