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coresight: stm: Allow to build coresight-stm as a module

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- Kconfig becomes a tristate, to allow =m
- add a stm_remove function, for module unload
- add a MODULE_DEVICE_TABLE for autoloading on boot

Cc: Mathieu Poirier <[email protected]>
Cc: Leo Yan <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Randy Dunlap <[email protected]>
Cc: Suzuki K Poulose <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Russell King <[email protected]>
Tested-by: Mike Leach <[email protected]>
Reviewed-by: Suzuki K Poulose <[email protected]>
Signed-off-by: Kim Phillips <[email protected]>
Signed-off-by: Tingwei Zhang <[email protected]>
Signed-off-by: Mathieu Poirier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Tingwei Zhang
2020-09-28 19:47:40 +02:00
committed by Greg Kroah-Hartman
parent 32b0707a41
commit 8b0cf82677
2 changed files with 23 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/hwtracing/coresight/Kconfig
+4 -1
View File
@@ -86,7 +86,7 @@ config CORESIGHT_SOURCE_ETM4X
data tracing may also be available.
config CORESIGHT_STM
bool "CoreSight System Trace Macrocell driver"
tristate "CoreSight System Trace Macrocell driver"
depends on (ARM && !(CPU_32v3 || CPU_32v4 || CPU_32v4T)) || ARM64
select CORESIGHT_LINKS_AND_SINKS
select STM
@@ -96,6 +96,9 @@ config CORESIGHT_STM
logging useful software events or data coming from various entities
in the system, possibly running different OSs
To compile this driver as a module, choose M here: the
module will be called coresight-stm.
config CORESIGHT_CPU_DEBUG
tristate "CoreSight CPU Debug driver"
depends on ARM || ARM64
drivers/hwtracing/coresight/coresight-stm.c
+19 -1
View File
@@ -951,6 +951,17 @@ stm_unregister:
return ret;
}
static int __exit stm_remove(struct amba_device *adev)
{
struct stm_drvdata *drvdata = dev_get_drvdata(&adev->dev);
coresight_unregister(drvdata->csdev);
stm_unregister_device(&drvdata->stm);
return 0;
}
#ifdef CONFIG_PM
static int stm_runtime_suspend(struct device *dev)
{
@@ -983,6 +994,8 @@ static const struct amba_id stm_ids[] = {
{ 0, 0},
};
MODULE_DEVICE_TABLE(amba, stm_ids);
static struct amba_driver stm_driver = {
.drv = {
.name = "coresight-stm",
@@ -991,7 +1004,12 @@ static struct amba_driver stm_driver = {
.suppress_bind_attrs = true,
},
.probe = stm_probe,
.remove = stm_remove,
.id_table = stm_ids,
};
builtin_amba_driver(stm_driver);
module_amba_driver(stm_driver);
MODULE_AUTHOR("Pratik Patel <[email protected]>");
MODULE_DESCRIPTION("Arm CoreSight System Trace Macrocell driver");
MODULE_LICENSE("GPL v2");