Commit d9ed244e authored by Kim Phillips's avatar Kim Phillips Committed by Greg Kroah-Hartman
Browse files

coresight: tpiu: Allow tpiu to be built as a module 



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 <mathieu.poirier@linaro.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Suzuki K Poulose <Suzuki.Poulose@arm.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Russell King <linux@armlinux.org.uk>
Reviewed-by: default avatarMike Leach <mike.leach@linaro.org>
Reviewed-by: default avatarSuzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: default avatarKim Phillips <kim.phillips@arm.com>
Signed-off-by: default avatarTingwei Zhang <tingwei@codeaurora.org>
Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20200928163513.70169-13-mathieu.poirier@linaro.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 529c4451

drivers/hwtracing/coresight/Kconfig

+4 −1
Original line number Diff line number Diff line
@@ -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

drivers/hwtracing/coresight/coresight-tpiu.c

+19 −1
Original line number Diff line number Diff line
@@ -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 +235,13 @@ 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 <pratikp@codeaurora.org>");

MODULE_AUTHOR("Mathieu Poirier <mathieu.poirier@linaro.org>");

MODULE_DESCRIPTION("Arm CoreSight TPIU (Trace Port Interface Unit) driver");

MODULE_LICENSE("GPL v2");

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