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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 4A7B7C2D0A3 for ; Mon, 9 Nov 2020 20:47:30 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CB4442068D for ; Mon, 9 Nov 2020 20:47:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="kS/nSxOb"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="DOFz7xZ/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CB4442068D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Y2nxYXttpg7PRIE5la09airc/Gv/E6OVAK/CMihNGlg=; b=kS/nSxObJXL0UlGqq7qgMJ3oW bN2Vna2C6avJTwPrE88MnCFwHFnqdyn1PpRHGn5+koZNycCdftvD8sWj6XdWy2tgo5PE8uCng/f/V 4PqxUQliAsmsUZkRzb41U+QOdyABHPoszJSNJ3bOb2O4m1mQitRnRsmXpNItftYo0GMEx7HiT/rmQ YyorCTmdDpcpYiDnnUDScG45xXMT5yjI5EIbIQBPemOn+m/8jjPC7qPO7RWHNdb+yT8VkBKOpEsXW 9aqKiukwjy/RvwMoiBKbp8ENFyCTARiNz97WqRxkwKIaEeLTtwiBZrQW9B3m3J1809scFFc9xztor 25uUNVI4A==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kcE48-0004ml-NR; Mon, 09 Nov 2020 20:47:04 +0000 Received: from mail-pg1-x541.google.com ([2607:f8b0:4864:20::541]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kcE46-0004lx-HX for linux-arm-kernel@lists.infradead.org; Mon, 09 Nov 2020 20:47:03 +0000 Received: by mail-pg1-x541.google.com with SMTP id z24so8174830pgk.3 for ; Mon, 09 Nov 2020 12:47:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=Iin0vDUK3sevQI2bAvaPfD3H/W4vZ+Pqy7XQDqW23fY=; b=DOFz7xZ/ueIU8DDLtiktNgoKvoTu7cz/YyeBYMzuuQFVEfvPWbAm8Djo1KFovcE1gU MG+zMJVNHqmMpmxbHm9g3E3Vqc3HnqQlL2YNtnbvK23DkvRKTUgGgOqFdUbDhlsZv4nf Ui8fDrJIbijZ+JqXK64ym4YMLl4X4bH5i0lcRED8B+ZnGjZK0QJ0lvwD8PDEJcYY7Ptg pJzjgrqN1sRaB0OZfukknG0QzBwzkK/oLsCC6M24Gh1p4+p1Ep8QKQRLa+y82/fu692e pvjW2sf4FhxhfuEcDrK7QXoULZDbNDEUumn1f65Ws+2CsTdmBnyuDaEuerVk0s5J3H6Y U3Rw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=Iin0vDUK3sevQI2bAvaPfD3H/W4vZ+Pqy7XQDqW23fY=; b=TAKxidH07O0ZZEOBsZd9A/I/gD9WDvgahNIXyk1RQK/fgdrQPyyQgtUegSGxtnYjAt 2wHOh+a1PAI6B5FlKQLMDCyvp94o0guybbJgd8GC1Lz4cHfDmi4DEAin3DJsk7PGRs7B mMi15m5TnfP9KrsExhN4qTuombLh0cygQHKA54A6Ur8CaJlLHBEWVcOMaxCIIWAjbJQs Wpu0PgqyG0b/xJC/nObhDqB5dydEGgGLGr3PKAu0xXo9/MC/k8WV35wmTq3v5WMK1H45 4oS4fp3FWPqTAdEc0s9UlxBibqh6eTiCGPObR6236+O3n7IZzP0Re3o4UnV3fdpiofqk xHqw== X-Gm-Message-State: AOAM533JL2rxgm76P0NRLKrJSMwWuQEeAl/iDmZ2m50dAfjbcSse+1IS 3BkwgkrYbhx2Y8nhUbAASxVP6n4dCGt1QQ== X-Google-Smtp-Source: ABdhPJw2aEoDsjVndg890wcwXHA9V4CYUoL2EPjvRTtNqf6adlFuky9F0/slPmytSKWL4vBupYiCyQ== X-Received: by 2002:a63:3202:: with SMTP id y2mr13744540pgy.97.1604954820247; Mon, 09 Nov 2020 12:47:00 -0800 (PST) Received: from xps15 (S0106002369de4dac.cg.shawcable.net. [68.147.8.254]) by smtp.gmail.com with ESMTPSA id a24sm12294500pfl.174.2020.11.09.12.46.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Nov 2020 12:46:59 -0800 (PST) Date: Mon, 9 Nov 2020 13:46:57 -0700 From: Mathieu Poirier To: Suzuki K Poulose Subject: Re: [PATCH v3 25/26] coresight: etm4x: Add support for sysreg only devices Message-ID: <20201109204657.GD3396611@xps15> References: <20201028220945.3826358-1-suzuki.poulose@arm.com> <20201028220945.3826358-27-suzuki.poulose@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20201028220945.3826358-27-suzuki.poulose@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201109_154702_859989_8DDDB6C4 X-CRM114-Status: GOOD ( 27.00 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: coresight@lists.linaro.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, mike.leach@linaro.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Oct 28, 2020 at 10:09:44PM +0000, Suzuki K Poulose wrote: > Add support for devices with system instruction access only. > They don't have a memory mapped interface and thus are not > AMBA devices. > > Cc: Mathieu Poirier > Cc: Mike Leach > Signed-off-by: Suzuki K Poulose > --- > .../coresight/coresight-etm4x-core.c | 50 +++++++++++++++++-- > 1 file changed, 45 insertions(+), 5 deletions(-) > > diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c > index 25fab5513604..50a574228866 100644 > --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c > +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c > @@ -26,6 +26,7 @@ > #include > #include > #include > +#include > #include > #include > #include > @@ -1623,9 +1624,6 @@ static int etm4_probe(struct device *dev, void __iomem *base) > return -ENOMEM; > } > > - if (fwnode_property_present(dev_fwnode(dev), "qcom,skip-power-up")) > - drvdata->skip_power_up = true; > - > drvdata->base = base; > > spin_lock_init(&drvdata->spinlock); > @@ -1648,6 +1646,11 @@ static int etm4_probe(struct device *dev, void __iomem *base) > if (!drvdata->arch) > return -EINVAL; > > + /* Skip programming TRCPDCR for system instructions. */ It would be nice to mention that TRCPDCR is not available in system instruction mode. > + if (!desc.access.io_mem || > + fwnode_property_present(dev_fwnode(dev), "qcom,skip-power-up")) > + drvdata->skip_power_up = true; > + > etm4_init_trace_id(drvdata); > etm4_set_default(&drvdata->config); > > @@ -1706,6 +1709,20 @@ static int etm4_probe_amba(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > +static int etm4_probe_platform_dev(struct platform_device *pdev) > +{ > + int ret; > + > + pm_runtime_get_noresume(&pdev->dev); > + pm_runtime_set_active(&pdev->dev); > + pm_runtime_enable(&pdev->dev); > + > + ret = etm4_probe(&pdev->dev, NULL); > + > + pm_runtime_put(&pdev->dev); > + return ret; > +} > + > static struct amba_cs_uci_id uci_id_etm4[] = { > { > /* ETMv4 UCI data */ > @@ -1781,6 +1798,20 @@ static struct amba_driver etm4x_amba_driver = { > .id_table = etm4_ids, > }; > > +static const struct of_device_id etm_sysreg_match[] = { s/etm_sysreg_match/etm4_sysreg_match > + { .compatible = "arm,coresight-etm-sysreg" }, See my comment in the next patch. With the above: Reviewed-by: Mathieu Poirier > + {} > +}; > + > +static struct platform_driver etm4_platform_driver = { > + .probe = etm4_probe_platform_dev, > + .driver = { > + .name = "coresight-etm4x", > + .of_match_table = etm_sysreg_match, > + .suppress_bind_attrs = true, > + }, > +}; > + > static int __init etm4x_init(void) > { > int ret; > @@ -1793,10 +1824,19 @@ static int __init etm4x_init(void) > > ret = amba_driver_register(&etm4x_amba_driver); > if (ret) { > - pr_err("Error registering etm4x driver\n"); > - etm4_pm_clear(); > + pr_err("Error registering etm4x AMBA driver\n"); > + goto clear_pm; > } > > + ret = platform_driver_register(&etm4_platform_driver); > + if (!ret) > + return 0; > + > + pr_err("Error registering etm4x platform driver\n"); > + amba_driver_unregister(&etm4x_amba_driver); > + > +clear_pm: > + etm4_pm_clear(); > return ret; > } > > -- > 2.24.1 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel