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Fri, 31 Jul 2020 06:41:35 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id B46DFC433A1; Fri, 31 Jul 2020 06:41:35 +0000 (UTC) Received: from tingweiz-gv.qualcomm.com (unknown [180.166.53.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: tingwei) by smtp.codeaurora.org (Postfix) with ESMTPSA id B09EFC433CA; Fri, 31 Jul 2020 06:41:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org B09EFC433CA Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=tingwei@codeaurora.org From: Tingwei Zhang To: Mathieu Poirier , Suzuki K Poulose , Alexander Shishkin , Mike Leach Subject: [PATCH v6 12/25] coresight: tpiu: allow tpiu to be built as a module Date: Fri, 31 Jul 2020 14:39:59 +0800 Message-Id: <20200731064012.8076-13-tingwei@codeaurora.org> X-Mailer: git-send-email 2.20.0 In-Reply-To: <20200731064012.8076-1-tingwei@codeaurora.org> References: <20200731064012.8076-1-tingwei@codeaurora.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200731_024136_379309_17F1E701 X-CRM114-Status: GOOD ( 20.65 ) 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: tsoni@codeaurora.org, Sai Prakash Ranjan , Kim Phillips , Mao Jinlong , Suzuki K Poulose , Greg Kroah-Hartman , coresight@lists.linaro.org, Randy Dunlap , Mian Yousaf Kaukab , Russell King , Tingwei Zhang , Leo Yan , linux-arm-kernel@lists.infradead.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 From: Kim Phillips Allow to build coresight-tpiu as a module, for ease of development. - Kconfig becomes a tristate, to allow =m - add a tpiu_remove function, for module unload - add a MODULE_DEVICE_TABLE for autoloading on boot Cc: Mathieu Poirier Cc: Leo Yan Cc: Alexander Shishkin Cc: Randy Dunlap Cc: Suzuki K Poulose Cc: Greg Kroah-Hartman Cc: Russell King Signed-off-by: Kim Phillips Signed-off-by: Tingwei Zhang --- drivers/hwtracing/coresight/Kconfig | 5 ++++- drivers/hwtracing/coresight/coresight-tpiu.c | 19 ++++++++++++++++++- 2 files changed, 22 insertions(+), 2 deletions(-) diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig index 996d84a1edb8..8fd9887fb03b 100644 --- a/drivers/hwtracing/coresight/Kconfig +++ b/drivers/hwtracing/coresight/Kconfig @@ -46,7 +46,7 @@ config CORESIGHT_CATU mode where the address is not translated. config CORESIGHT_SINK_TPIU - bool "Coresight generic TPIU driver" + tristate "Coresight generic TPIU driver" depends on CORESIGHT_LINKS_AND_SINKS help This enables support for the Trace Port Interface Unit driver, @@ -56,6 +56,9 @@ config CORESIGHT_SINK_TPIU connected to an external host for use case capturing more traces than the on-board coresight memory can handle. + To compile this driver as a module, choose M here: the + module will be called coresight-tpiu. + config CORESIGHT_SINK_ETBV10 tristate "Coresight ETBv1.0 driver" depends on CORESIGHT_LINKS_AND_SINKS diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c index f8583e4032a6..e4ddd9801535 100644 --- a/drivers/hwtracing/coresight/coresight-tpiu.c +++ b/drivers/hwtracing/coresight/coresight-tpiu.c @@ -173,6 +173,15 @@ static int tpiu_probe(struct amba_device *adev, const struct amba_id *id) return PTR_ERR(drvdata->csdev); } +static int __exit tpiu_remove(struct amba_device *adev) +{ + struct tpiu_drvdata *drvdata = dev_get_drvdata(&adev->dev); + + coresight_unregister(drvdata->csdev); + + return 0; +} + #ifdef CONFIG_PM static int tpiu_runtime_suspend(struct device *dev) { @@ -216,6 +225,8 @@ static const struct amba_id tpiu_ids[] = { { 0, 0}, }; +MODULE_DEVICE_TABLE(amba, tpiu_ids); + static struct amba_driver tpiu_driver = { .drv = { .name = "coresight-tpiu", @@ -224,6 +235,12 @@ static struct amba_driver tpiu_driver = { .suppress_bind_attrs = true, }, .probe = tpiu_probe, + .remove = tpiu_remove, .id_table = tpiu_ids, }; -builtin_amba_driver(tpiu_driver); +module_amba_driver(tpiu_driver); + +MODULE_AUTHOR("Pratik Patel "); +MODULE_AUTHOR("Mathieu Poirier "); +MODULE_DESCRIPTION("Arm CoreSight TPIU (Trace Port Interface Unit) driver"); +MODULE_LICENSE("GPL v2"); -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel