From mboxrd@z Thu Jan 1 00:00:00 1970 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D34D7C433FE for ; Wed, 10 Nov 2021 11:01:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BE12861251 for ; Wed, 10 Nov 2021 11:01:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231724AbhKJLEL (ORCPT ); Wed, 10 Nov 2021 06:04:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50326 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231833AbhKJLDy (ORCPT ); Wed, 10 Nov 2021 06:03:54 -0500 Received: from mail-pf1-x435.google.com (mail-pf1-x435.google.com [IPv6:2607:f8b0:4864:20::435]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2C7C7C061764 for ; Wed, 10 Nov 2021 03:00:48 -0800 (PST) Received: by mail-pf1-x435.google.com with SMTP id y5so2344732pfb.4 for ; Wed, 10 Nov 2021 03:00:48 -0800 (PST) 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=7u1iAVVo3sdaS9s0AUgUQ2tek6Zg53845o3/r2uXRg0=; b=hvbiT8f/eEt8WmEsuwwBjOJgtVnQvv07DOAjeW0ncH+fPSV87cYZQVt8VaAKrEViQh ObEzIyHC8FUjk4/wzX3zSm4gOhqNBfZ9fgXWfgIFdw4MrqIV6yzc9pPWod8oYtPixleJ D6qXX74e5V9b9TvC7PNuxv+GgrF4NsOiS37KNgovc8OcSPnm1LQaraYXqgZB96UYaxbb s6Ybl/NTwqXGILqK+lFolaNAqTB6j65l6QP3GlbI/GBnux/B8sgRQwz6yBCFstnJUWS4 Jx3sv6HF347TtXNTGbSZlq/Y7/LwKHvddkqJrzghTnqIIET9e2VIn2cIJ3FjUKC2YI1A ph6Q== 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=7u1iAVVo3sdaS9s0AUgUQ2tek6Zg53845o3/r2uXRg0=; b=zt5jE6UTbsofZXF/0S/9qaDcxk0JG+HUXncuBpC4RF/RDg7RD6SjG4OoIRz1XGAijR 6jblqezHkQItV3V6+snBJaBsAJ1qs9+dBXBQZB6d/3IujPo+2CL/1SWKkXc1etNmJ9Hy WqVuPFypo5lSJjnNBOrZrnoOpI2pwIKlMsv4BN7wDy/yi/qsRcAJ68WyiDiIOrsi6Ij5 f/97e7UdRBHUjHgRzrixVcMoNDH70mvJz6eSgYwEbAw4OdyUc/ZjVNEsXcM6bJxuAGsU IUQUOEk5nZ6WiexHLUMHx87+PnUPMd129JwT9tvt1Qwk+chGk31ADt6aiJD56gAey4y+ GsKg== X-Gm-Message-State: AOAM533nF671zoxIaZdk0yokntoKF9bVdAZxmbho/6Vo9+Uea2rn9MFg 4iq7Np9jaERg7jx8i3GvWqtjnA== X-Google-Smtp-Source: ABdhPJwak4cjDAI1k2lQt8ssRLnbvLhAzjfJGkZNZix769SZnH+yESXTNPDQWGJhiU5YpqBa4MRzCg== X-Received: by 2002:a05:6a00:1d26:b0:49f:b599:4c02 with SMTP id a38-20020a056a001d2600b0049fb5994c02mr15365919pfx.67.1636542047698; Wed, 10 Nov 2021 03:00:47 -0800 (PST) Received: from localhost.name ([122.161.52.143]) by smtp.gmail.com with ESMTPSA id e11sm5585282pjl.20.2021.11.10.03.00.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Nov 2021 03:00:47 -0800 (PST) From: Bhupesh Sharma To: linux-arm-msm@vger.kernel.org, linux-crypto@vger.kernel.org Cc: bhupesh.sharma@linaro.org, bhupesh.linux@gmail.com, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, robh+dt@kernel.org, agross@kernel.org, herbert@gondor.apana.org.au, davem@davemloft.net, stephan@gerhold.net, Thara Gopinath , Bjorn Andersson Subject: [PATCH v5 13/22] dma: qcom: bam_dma: Add support to initialize interconnect path Date: Wed, 10 Nov 2021 16:29:13 +0530 Message-Id: <20211110105922.217895-14-bhupesh.sharma@linaro.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20211110105922.217895-1-bhupesh.sharma@linaro.org> References: <20211110105922.217895-1-bhupesh.sharma@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Thara Gopinath BAM dma engine associated with certain hardware blocks could require relevant interconnect pieces be initialized prior to the dma engine initialization. For e.g. crypto bam dma engine on sm8250. Such requirement is passed on to the bam dma driver from dt via the "interconnects" property. Add support in bam_dma driver to check whether the interconnect path is accessible/enabled prior to attempting driver intializations. Cc: Bjorn Andersson Cc: Rob Herring Signed-off-by: Bhupesh Sharma [Make header file inclusion alphabetical and use 'devm_of_icc_get()'] Signed-off-by: Thara Gopinath --- drivers/dma/qcom/bam_dma.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/dma/qcom/bam_dma.c b/drivers/dma/qcom/bam_dma.c index c8a77b428b52..19fb17db467f 100644 --- a/drivers/dma/qcom/bam_dma.c +++ b/drivers/dma/qcom/bam_dma.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include #include @@ -392,6 +393,7 @@ struct bam_device { const struct reg_offset_data *layout; struct clk *bamclk; + struct icc_path *mem_path; int irq; /* dma start transaction tasklet */ @@ -1284,6 +1286,15 @@ static int bam_dma_probe(struct platform_device *pdev) return ret; } + /* Ensure that interconnects are initialized */ + bdev->mem_path = devm_of_icc_get(bdev->dev, "memory"); + + if (IS_ERR(bdev->mem_path)) { + ret = PTR_ERR(bdev->mem_path); + dev_err(bdev->dev, "failed to acquire icc path %d\n", ret); + goto err_disable_clk; + } + ret = bam_init(bdev); if (ret) goto err_disable_clk; -- 2.31.1