From mboxrd@z Thu Jan 1 00:00:00 1970 From: kim.phillips@arm.com (Kim Phillips) Date: Tue, 5 Jun 2018 16:07:03 -0500 Subject: [PATCH v4 07/14] coresight: allow dynamic-replicator to be built as a module In-Reply-To: <20180605210710.22227-1-kim.phillips@arm.com> References: <20180605210710.22227-1-kim.phillips@arm.com> Message-ID: <20180605210710.22227-8-kim.phillips@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Allow to build coresight-dynamic-replicator as a module, for ease of development. - Kconfig becomes a tristate, to allow =m - add a replicator_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 --- drivers/hwtracing/coresight/Kconfig | 5 ++++- .../coresight/coresight-dynamic-replicator.c | 19 ++++++++++++++++++- 2 files changed, 22 insertions(+), 2 deletions(-) diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig index 8c5e5407b7dd..945b17ca2eed 100644 --- a/drivers/hwtracing/coresight/Kconfig +++ b/drivers/hwtracing/coresight/Kconfig @@ -71,13 +71,16 @@ config CORESIGHT_SOURCE_ETM4X data tracing may also be available. config CORESIGHT_DYNAMIC_REPLICATOR - bool "CoreSight Programmable Replicator driver" + tristate "CoreSight Programmable Replicator driver" depends on CORESIGHT_LINKS_AND_SINKS help This enables support for dynamic CoreSight replicator link driver. The programmable ATB replicator allows independent filtering of the trace data based on the traceid. + To compile this driver as a module, choose M here: the + module will be called coresight-dynamic-replicator. + config CORESIGHT_STM depends on (ARM && !(CPU_32v3 || CPU_32v4 || CPU_32v4T)) || ARM64 tristate "CoreSight System Trace Macrocell driver" diff --git a/drivers/hwtracing/coresight/coresight-dynamic-replicator.c b/drivers/hwtracing/coresight/coresight-dynamic-replicator.c index f6d0571ab9dd..b59055097436 100644 --- a/drivers/hwtracing/coresight/coresight-dynamic-replicator.c +++ b/drivers/hwtracing/coresight/coresight-dynamic-replicator.c @@ -159,6 +159,15 @@ static int replicator_probe(struct amba_device *adev, const struct amba_id *id) return PTR_ERR_OR_ZERO(drvdata->csdev); } +static int __exit replicator_remove(struct amba_device *adev) +{ + struct replicator_state *drvdata = dev_get_drvdata(&adev->dev); + + coresight_unregister(drvdata->csdev); + + return 0; +} + #ifdef CONFIG_PM static int replicator_runtime_suspend(struct device *dev) { @@ -200,13 +209,21 @@ static const struct amba_id replicator_ids[] = { { 0, 0 }, }; +MODULE_DEVICE_TABLE(amba, replicator_ids); + static struct amba_driver replicator_driver = { .drv = { .name = "coresight-dynamic-replicator", + .owner = THIS_MODULE, .pm = &replicator_dev_pm_ops, .suppress_bind_attrs = true, }, .probe = replicator_probe, + .remove = replicator_remove, .id_table = replicator_ids, }; -builtin_amba_driver(replicator_driver); +module_amba_driver(replicator_driver); + +MODULE_AUTHOR("Pratik Patel "); +MODULE_DESCRIPTION("Arm CoreSight Dynamic Replicator Driver"); +MODULE_LICENSE("GPL v2"); -- 2.17.0