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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 15F07C43381 for ; Wed, 20 Mar 2019 18:50:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E21AC2146E for ; Wed, 20 Mar 2019 18:50:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727593AbfCTSuc (ORCPT ); Wed, 20 Mar 2019 14:50:32 -0400 Received: from foss.arm.com ([217.140.101.70]:44904 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727385AbfCTSu2 (ORCPT ); Wed, 20 Mar 2019 14:50:28 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 76C231A25; Wed, 20 Mar 2019 11:50:28 -0700 (PDT) Received: from en101.cambridge.arm.com (en101.cambridge.arm.com [10.1.196.93]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id F0F143F59C; Wed, 20 Mar 2019 11:50:26 -0700 (PDT) From: Suzuki K Poulose To: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, coresight@lists.linaro.org, mike.leach@linaro.org, robert.walker@arm.com, Suzuki K Poulose , Mathieu Poirier Subject: [PATCH 11/25] coresight: stm: Cleanup device specific data Date: Wed, 20 Mar 2019 18:49:28 +0000 Message-Id: <1553107783-3340-12-git-send-email-suzuki.poulose@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1553107783-3340-1-git-send-email-suzuki.poulose@arm.com> References: <1553107783-3340-1-git-send-email-suzuki.poulose@arm.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Keep track of the STM coresight device which is a child device of the AMBA device. Since we can get to the coresight_device from the "device" instance, remove the explicit field. Cc: Mathieu Poirier Signed-off-by: Suzuki K Poulose --- drivers/hwtracing/coresight/coresight-stm.c | 36 ++++++++++++++--------------- 1 file changed, 18 insertions(+), 18 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c index 9f8a844..6afe033 100644 --- a/drivers/hwtracing/coresight/coresight-stm.c +++ b/drivers/hwtracing/coresight/coresight-stm.c @@ -110,9 +110,9 @@ struct channel_space { /** * struct stm_drvdata - specifics associated to an STM component * @base: memory mapped base address for this component. - * @dev: the device entity associated to this component. + * @dev: the coresight device entity associated to this + * component. * @atclk: optional clock for the core parts of the STM. - * @csdev: component vitals needed by the framework. * @spinlock: only one at a time pls. * @chs: the channels accociated to this STM. * @stm: structure associated to the generic STM interface. @@ -130,7 +130,6 @@ struct stm_drvdata { void __iomem *base; struct device *dev; struct clk *atclk; - struct coresight_device *csdev; spinlock_t spinlock; struct channel_space chs; struct stm_data stm; @@ -205,7 +204,7 @@ static int stm_enable(struct coresight_device *csdev, if (val) return -EBUSY; - pm_runtime_get_sync(drvdata->dev); + pm_runtime_get_sync(drvdata->dev->parent); spin_lock(&drvdata->spinlock); stm_enable_hw(drvdata); @@ -271,7 +270,7 @@ static void stm_disable(struct coresight_device *csdev, /* Wait until the engine has completely stopped */ coresight_timeout(drvdata->base, STMTCSR, STMTCSR_BUSY_BIT, 0); - pm_runtime_put(drvdata->dev); + pm_runtime_put(drvdata->dev->parent); local_set(&drvdata->mode, CS_MODE_DISABLED); dev_dbg(drvdata->dev, "STM tracing disabled\n"); @@ -336,10 +335,10 @@ static int stm_generic_link(struct stm_data *stm_data, { struct stm_drvdata *drvdata = container_of(stm_data, struct stm_drvdata, stm); - if (!drvdata || !drvdata->csdev) + if (!drvdata || !drvdata->dev) return -EINVAL; - return coresight_enable(drvdata->csdev); + return coresight_enable(to_coresight_device(drvdata->dev)); } static void stm_generic_unlink(struct stm_data *stm_data, @@ -347,10 +346,10 @@ static void stm_generic_unlink(struct stm_data *stm_data, { struct stm_drvdata *drvdata = container_of(stm_data, struct stm_drvdata, stm); - if (!drvdata || !drvdata->csdev) + if (!drvdata || !drvdata->dev) return; - coresight_disable(drvdata->csdev); + coresight_disable(to_coresight_device(drvdata->dev)); } static phys_addr_t @@ -763,10 +762,9 @@ static void stm_init_default_data(struct stm_drvdata *drvdata) bitmap_clear(drvdata->chs.guaranteed, 0, drvdata->numsp); } -static void stm_init_generic_data(struct stm_drvdata *drvdata) +static void stm_init_generic_data(struct stm_drvdata *drvdata, const char *name) { - drvdata->stm.name = dev_name(drvdata->dev); - + drvdata->stm.name = name; /* * MasterIDs are assigned at HW design phase. As such the core is * using a single master for interaction with this device. @@ -795,6 +793,7 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id) struct resource ch_res; size_t bitmap_size; struct coresight_desc desc = { 0 }; + struct coresight_device *csdev; struct device_node *np = adev->dev.of_node; if (np) { @@ -807,7 +806,6 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id) if (!drvdata) return -ENOMEM; - drvdata->dev = &adev->dev; drvdata->atclk = devm_clk_get(&adev->dev, "atclk"); /* optional */ if (!IS_ERR(drvdata->atclk)) { ret = clk_prepare_enable(drvdata->atclk); @@ -848,7 +846,7 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id) spin_lock_init(&drvdata->spinlock); stm_init_default_data(drvdata); - stm_init_generic_data(drvdata); + stm_init_generic_data(drvdata, pdata->name); if (stm_register_device(dev, &drvdata->stm, THIS_MODULE)) { dev_info(dev, @@ -862,15 +860,17 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id) desc.pdata = pdata; desc.dev = dev; desc.groups = coresight_stm_groups; - drvdata->csdev = coresight_register(&desc); - if (IS_ERR(drvdata->csdev)) { - ret = PTR_ERR(drvdata->csdev); + csdev = coresight_register(&desc); + if (IS_ERR(csdev)) { + ret = PTR_ERR(csdev); goto stm_unregister; } + drvdata->dev = &csdev->dev; pm_runtime_put(&adev->dev); - dev_info(dev, "%s initialized\n", (char *)coresight_get_uci_data(id)); + dev_info(drvdata->dev, "%s initialized\n", + (char *)coresight_get_uci_data(id)); return 0; stm_unregister: -- 2.7.4