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authorTingwei Zhang <tingwei@codeaurora.org>2020-09-28 19:35:11 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-09-28 20:47:42 +0300
commita114dbea544dffa9850f3f6e79bf7d8706ddd4a5 (patch)
treec7171e27851da382af605c449f02289af2c23dbd /drivers/hwtracing
parent66af416d9dccaba7eb4efd290b9afcac71d3eeee (diff)
downloadlinux-a114dbea544dffa9850f3f6e79bf7d8706ddd4a5.tar.xz
coresight: catu: Allow catu drivers to be built as modules
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>
Diffstat (limited to 'drivers/hwtracing')
-rw-r--r--drivers/hwtracing/coresight/Kconfig5
-rw-r--r--drivers/hwtracing/coresight/coresight-catu.c15
2 files changed, 19 insertions, 1 deletions
diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig
index b04aae2ceecc..dfe407cde262 100644
--- a/drivers/hwtracing/coresight/Kconfig
+++ b/drivers/hwtracing/coresight/Kconfig
@@ -42,7 +42,7 @@ config CORESIGHT_LINK_AND_SINK_TMC
module will be called coresight-tmc.
config CORESIGHT_CATU
- bool "Coresight Address Translation Unit (CATU) driver"
+ tristate "Coresight Address Translation Unit (CATU) driver"
depends on CORESIGHT_LINK_AND_SINK_TMC
help
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
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
tristate "Coresight generic TPIU driver"
depends on CORESIGHT_LINKS_AND_SINKS
diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c
index 47696a7d24a7..99430f6cf5a5 100644
--- a/drivers/hwtracing/coresight/coresight-catu.c
+++ b/drivers/hwtracing/coresight/coresight-catu.c
@@ -567,11 +567,21 @@ out:
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[] = {
CS_AMBA_ID(0x000bb9ee),
{},
};
+MODULE_DEVICE_TABLE(amba, catu_ids);
+
static struct amba_driver catu_driver = {
.drv = {
.name = "coresight-catu",
@@ -579,6 +589,7 @@ static struct amba_driver catu_driver = {
.suppress_bind_attrs = true,
},
.probe = catu_probe,
+ .remove = catu_remove,
.id_table = catu_ids,
};
@@ -601,3 +612,7 @@ static void __exit catu_exit(void)
module_init(catu_init);
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");