From patchwork Mon Mar 21 20:07:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Corentin LABBE X-Patchwork-Id: 12787698 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 337DCC433F5 for ; Mon, 21 Mar 2022 20:14:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=dagg3642jbVqzbveXdQGalupycfsvZHTZnzz3gGCb+Q=; b=3I9DR8sGLweyeJ 923Q19V4DrocUtzOSUjTaCwVgDqYP1RDP0XDpcxniIUp362Qp+Qp2a8uaeViXbHRcQgmo+6PuvjNz Deb9z/IorxPZ7TQoxBTHUttn+/OTLHEzwq8eXwuY0ElNWY1AWCFXALk5RtSb0GRYxrSgpK4hiZVa5 O+no0KR0Zp6xJ0u++EbTwLYIrQEt8SuvVMOIlftGBvyOBFv6+1+BuGPCrpW3anJqEBiSOMeMIGCJf KVOcqm2/cnPxlhoAN1zAmbW9Y/hP8emvy2hkMagVA+msHxBvkL+lLoKblIWlxiybcr461KQl4VM0c vBZHLQFGI/VYVz2FKb1A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nWOPh-008wzO-QS; Mon, 21 Mar 2022 20:14:01 +0000 Received: from mail-wr1-x435.google.com ([2a00:1450:4864:20::435]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nWOJs-008tXL-PO for linux-rockchip@lists.infradead.org; Mon, 21 Mar 2022 20:08:09 +0000 Received: by mail-wr1-x435.google.com with SMTP id t11so22243331wrm.5 for ; Mon, 21 Mar 2022 13:08:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=2koU9eUC0sosP5fb70SNKNvUvxzlAfqY4XAuaRf+3BM=; b=nm4JEFKv1ExN1Yho426sggi0XyhrT+8dhyjrwKK1msCHIWs1SIk4Kb8qMUCV55Itii g9lqsAXZi29gfQF7o5okjJcW/2A1yzHT0qXUWXCtEGgMYeLId08PQuzx151jmjjTGDrZ ybIVXhyIeOURG9ya5EtiEgCvUa0AF8JyZPs1FAjjEKIaVr+/GtO+smSoJeWXrAw9c+3m sck7SM8Ro5gIsTpECT4taI3XZ7KkcmZyOMwX3nAt3su5qacTWqTYfXLiizBxvUSMoYJf h6mPfnHdKd47AZrHpn2B3sZUDQDIHJy+OrqQEFkYsajNGSFCoe618lt4tXlEklSqJ9sg WDpQ== 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=2koU9eUC0sosP5fb70SNKNvUvxzlAfqY4XAuaRf+3BM=; b=Rlfa4EuYXc3jRB/l/xmmR7iAJAFAFR5OtcKTsbVuodcEtW7dtUd7Dcs7cu6imTrQJm ZDcRp6wKQxEfsxmgwQ9oIAkdcsjYurWontbtYbZSuQ6/PRBoRs6kuRojXf4Bs9+qCHSc HBaNb2+NUajUUb8iuwTK89x4Ep2gqiiH9Y+rBioPxB2EtW67fLKiYHIex0GN6OZ2/Y7K Yd7m6oBLmWrbW6rprgfI7IB2a1T/w4vA5oCp1M1Q+3eH9DIY5GXFkbcFNqMzyGdzd3bM wzGqfJtKyjhpb9fak+Thkn/a1GlPm6OOtdD50df4ylrUX9RhcB7iDu/JVYrIJyg+czw8 GaXw== X-Gm-Message-State: AOAM531/xC+L4dfGtgKLzibu2KYa60K05TGiN8zKIYKt+tAMckQb1dU9 ZdAay1aZWWj60X2qHCPBiJarkQ== X-Google-Smtp-Source: ABdhPJyhUOiAdTCjzsUCBzWNJdJJWllqjue/UNJ355mEpXvW7VMVR6TQAKhsHbUq/Tf1P1iWLVp2bA== X-Received: by 2002:a05:6000:1363:b0:203:d731:a19 with SMTP id q3-20020a056000136300b00203d7310a19mr20231181wrz.322.1647893279501; Mon, 21 Mar 2022 13:07:59 -0700 (PDT) Received: from localhost.localdomain (laubervilliers-658-1-213-31.w90-63.abo.wanadoo.fr. [90.63.244.31]) by smtp.googlemail.com with ESMTPSA id i14-20020a0560001ace00b00203da1fa749sm24426988wry.72.2022.03.21.13.07.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Mar 2022 13:07:59 -0700 (PDT) From: Corentin Labbe To: heiko@sntech.de, herbert@gondor.apana.org.au, krzk+dt@kernel.org, mturquette@baylibre.com, robh+dt@kernel.org, sboyd@kernel.org Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, Corentin Labbe Subject: [PATCH v3 13/26] crypto: rockchip: introduce PM Date: Mon, 21 Mar 2022 20:07:26 +0000 Message-Id: <20220321200739.3572792-14-clabbe@baylibre.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220321200739.3572792-1-clabbe@baylibre.com> References: <20220321200739.3572792-1-clabbe@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220321_130800_903866_9F637E59 X-CRM114-Status: GOOD ( 19.25 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Add runtime PM support for rockchip crypto. Signed-off-by: Corentin Labbe --- drivers/crypto/rockchip/rk3288_crypto.c | 51 ++++++++++++++++++- drivers/crypto/rockchip/rk3288_crypto.h | 1 + drivers/crypto/rockchip/rk3288_crypto_ahash.c | 10 ++++ .../crypto/rockchip/rk3288_crypto_skcipher.c | 9 ++++ 4 files changed, 69 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/rockchip/rk3288_crypto.c b/drivers/crypto/rockchip/rk3288_crypto.c index 3e1b4f3b2422..d9258b9e71b3 100644 --- a/drivers/crypto/rockchip/rk3288_crypto.c +++ b/drivers/crypto/rockchip/rk3288_crypto.c @@ -65,6 +65,48 @@ static void rk_crypto_disable_clk(struct rk_crypto_info *dev) clk_disable_unprepare(dev->sclk); } +/* + * Power management strategy: The device is suspended unless a TFM exists for + * one of the algorithms proposed by this driver. + */ +static int rk_crypto_pm_suspend(struct device *dev) +{ + struct rk_crypto_info *rkdev = dev_get_drvdata(dev); + + rk_crypto_disable_clk(rkdev); + return 0; +} + +static int rk_crypto_pm_resume(struct device *dev) +{ + struct rk_crypto_info *rkdev = dev_get_drvdata(dev); + + return rk_crypto_enable_clk(rkdev); +} + +static const struct dev_pm_ops rk_crypto_pm_ops = { + SET_RUNTIME_PM_OPS(rk_crypto_pm_suspend, rk_crypto_pm_resume, NULL) +}; + +static int rk_crypto_pm_init(struct rk_crypto_info *rkdev) +{ + int err; + + pm_runtime_use_autosuspend(rkdev->dev); + pm_runtime_set_autosuspend_delay(rkdev->dev, 2000); + + err = pm_runtime_set_suspended(rkdev->dev); + if (err) + return err; + pm_runtime_enable(rkdev->dev); + return err; +} + +static void rk_crypto_pm_exit(struct rk_crypto_info *rkdev) +{ + pm_runtime_disable(rkdev->dev); +} + static irqreturn_t rk_crypto_irq_handle(int irq, void *dev_id) { struct rk_crypto_info *dev = platform_get_drvdata(dev_id); @@ -273,7 +315,9 @@ static int rk_crypto_probe(struct platform_device *pdev) crypto_engine_start(crypto_info->engine); init_completion(&crypto_info->complete); - rk_crypto_enable_clk(crypto_info); + err = rk_crypto_pm_init(crypto_info); + if (err) + goto err_pm; err = rk_crypto_register(crypto_info); if (err) { @@ -294,6 +338,8 @@ static int rk_crypto_probe(struct platform_device *pdev) return 0; err_register_alg: + rk_crypto_pm_exit(crypto_info); +err_pm: crypto_engine_exit(crypto_info->engine); err_crypto: dev_err(dev, "Crypto Accelerator not successfully registered\n"); @@ -308,7 +354,7 @@ static int rk_crypto_remove(struct platform_device *pdev) debugfs_remove_recursive(crypto_tmp->dbgfs_dir); #endif rk_crypto_unregister(); - rk_crypto_disable_clk(crypto_tmp); + rk_crypto_pm_exit(crypto_tmp); crypto_engine_exit(crypto_tmp->engine); return 0; } @@ -318,6 +364,7 @@ static struct platform_driver crypto_driver = { .remove = rk_crypto_remove, .driver = { .name = "rk3288-crypto", + .pm = &rk_crypto_pm_ops, .of_match_table = crypto_of_id_table, }, }; diff --git a/drivers/crypto/rockchip/rk3288_crypto.h b/drivers/crypto/rockchip/rk3288_crypto.h index f85144e3d124..6a1f09d409bf 100644 --- a/drivers/crypto/rockchip/rk3288_crypto.h +++ b/drivers/crypto/rockchip/rk3288_crypto.h @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include diff --git a/drivers/crypto/rockchip/rk3288_crypto_ahash.c b/drivers/crypto/rockchip/rk3288_crypto_ahash.c index 8856c6226be6..137013bd4410 100644 --- a/drivers/crypto/rockchip/rk3288_crypto_ahash.c +++ b/drivers/crypto/rockchip/rk3288_crypto_ahash.c @@ -328,6 +328,7 @@ static int rk_cra_hash_init(struct crypto_tfm *tfm) struct ahash_alg *alg = __crypto_ahash_alg(tfm->__crt_alg); const char *alg_name = crypto_tfm_alg_name(tfm); + int err; algt = container_of(alg, struct rk_crypto_tmp, alg.hash); @@ -349,7 +350,15 @@ static int rk_cra_hash_init(struct crypto_tfm *tfm) tctx->enginectx.op.prepare_request = rk_hash_prepare; tctx->enginectx.op.unprepare_request = rk_hash_unprepare; + err = pm_runtime_resume_and_get(tctx->dev->dev); + if (err < 0) + goto error_pm; + return 0; +error_pm: + crypto_free_ahash(tctx->fallback_tfm); + + return err; } static void rk_cra_hash_exit(struct crypto_tfm *tfm) @@ -357,6 +366,7 @@ static void rk_cra_hash_exit(struct crypto_tfm *tfm) struct rk_ahash_ctx *tctx = crypto_tfm_ctx(tfm); crypto_free_ahash(tctx->fallback_tfm); + pm_runtime_put_autosuspend(tctx->dev->dev); } struct rk_crypto_tmp rk_ahash_sha1 = { diff --git a/drivers/crypto/rockchip/rk3288_crypto_skcipher.c b/drivers/crypto/rockchip/rk3288_crypto_skcipher.c index 4ff08238156b..8d3a60db0cf6 100644 --- a/drivers/crypto/rockchip/rk3288_crypto_skcipher.c +++ b/drivers/crypto/rockchip/rk3288_crypto_skcipher.c @@ -466,6 +466,7 @@ static int rk_ablk_init_tfm(struct crypto_skcipher *tfm) struct skcipher_alg *alg = crypto_skcipher_alg(tfm); const char *name = crypto_tfm_alg_name(&tfm->base); struct rk_crypto_tmp *algt; + int err; algt = container_of(alg, struct rk_crypto_tmp, alg.skcipher); @@ -483,7 +484,14 @@ static int rk_ablk_init_tfm(struct crypto_skcipher *tfm) ctx->enginectx.op.do_one_request = rk_cipher_run; + err = pm_runtime_resume_and_get(ctx->dev->dev); + if (err < 0) + goto error_pm; + return 0; +error_pm: + crypto_free_skcipher(ctx->fallback_tfm); + return err; } static void rk_ablk_exit_tfm(struct crypto_skcipher *tfm) @@ -492,6 +500,7 @@ static void rk_ablk_exit_tfm(struct crypto_skcipher *tfm) memzero_explicit(ctx->key, ctx->keylen); crypto_free_skcipher(ctx->fallback_tfm); + pm_runtime_put_autosuspend(ctx->dev->dev); } struct rk_crypto_tmp rk_ecb_aes_alg = {