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coresight: catu: Allow catu drivers to be built as modules

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Allow to build coresight-catu as modules, for ease of development.
- Kconfig becomes a tristate, to allow =m
- add catu_remove functions, for module unload
- add a MODULE_DEVICE_TABLE for autoloading on boot

Reviewed-by: Mike Leach <mike.leach@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20200928163513.70169-24-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tingwei Zhang 2020-09-28 10:35:11 -06:00 committed by Greg Kroah-Hartman
parent 66af416d9d
commit a114dbea54
2 changed files with 19 additions and 1 deletions
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5
drivers/hwtracing/coresight/Kconfig
View File

@ -42,7 +42,7 @@ config CORESIGHT_LINK_AND_SINK_TMC
module will be called coresight-tmc. module will be called coresight-tmc.
config CORESIGHT_CATU config CORESIGHT_CATU
bool "Coresight Address Translation Unit (CATU) driver" tristate "Coresight Address Translation Unit (CATU) driver"
depends on CORESIGHT_LINK_AND_SINK_TMC depends on CORESIGHT_LINK_AND_SINK_TMC
help help
Enable support for the Coresight Address Translation Unit (CATU). Enable support for the Coresight Address Translation Unit (CATU).
@ -52,6 +52,9 @@ config CORESIGHT_CATU
by looking up the provided table. CATU can also be used in pass-through by looking up the provided table. CATU can also be used in pass-through
mode where the address is not translated. mode where the address is not translated.
To compile this driver as a module, choose M here: the
module will be called coresight-catu.
config CORESIGHT_SINK_TPIU config CORESIGHT_SINK_TPIU
tristate "Coresight generic TPIU driver" tristate "Coresight generic TPIU driver"
depends on CORESIGHT_LINKS_AND_SINKS depends on CORESIGHT_LINKS_AND_SINKS

15
drivers/hwtracing/coresight/coresight-catu.c
View File

@ -567,11 +567,21 @@ static int catu_probe(struct amba_device *adev, const struct amba_id *id)
return ret; return ret;
} }
static int __exit catu_remove(struct amba_device *adev)
{
struct catu_drvdata *drvdata = dev_get_drvdata(&adev->dev);
coresight_unregister(drvdata->csdev);
return 0;
}
static struct amba_id catu_ids[] = { static struct amba_id catu_ids[] = {
CS_AMBA_ID(0x000bb9ee), CS_AMBA_ID(0x000bb9ee),
{}, {},
}; };
MODULE_DEVICE_TABLE(amba, catu_ids);
static struct amba_driver catu_driver = { static struct amba_driver catu_driver = {
.drv = { .drv = {
.name = "coresight-catu", .name = "coresight-catu",
@ -579,6 +589,7 @@ static struct amba_driver catu_driver = {
.suppress_bind_attrs = true, .suppress_bind_attrs = true,
}, },
.probe = catu_probe, .probe = catu_probe,
.remove = catu_remove,
.id_table = catu_ids, .id_table = catu_ids,
}; };
@ -601,3 +612,7 @@ static void __exit catu_exit(void)
module_init(catu_init); module_init(catu_init);
module_exit(catu_exit); module_exit(catu_exit);
MODULE_AUTHOR("Suzuki K Poulose <suzuki.poulose@arm.com>");
MODULE_DESCRIPTION("Arm CoreSight Address Translation Unit (CATU) Driver");
MODULE_LICENSE("GPL v2");