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coresight: stm: Allow to build coresight-stm as a module
- 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 <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> Tested-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Kim Phillips <kim.phillips@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/20200928163513.70169-8-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -86,7 +86,7 @@ config CORESIGHT_SOURCE_ETM4X
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data tracing may also be available.
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data tracing may also be available.
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config CORESIGHT_STM
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config CORESIGHT_STM
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bool "CoreSight System Trace Macrocell driver"
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tristate "CoreSight System Trace Macrocell driver"
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depends on (ARM && !(CPU_32v3 || CPU_32v4 || CPU_32v4T)) || ARM64
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depends on (ARM && !(CPU_32v3 || CPU_32v4 || CPU_32v4T)) || ARM64
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select CORESIGHT_LINKS_AND_SINKS
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select CORESIGHT_LINKS_AND_SINKS
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select STM
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select STM
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@ -96,6 +96,9 @@ config CORESIGHT_STM
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logging useful software events or data coming from various entities
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logging useful software events or data coming from various entities
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in the system, possibly running different OSs
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in the system, possibly running different OSs
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To compile this driver as a module, choose M here: the
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module will be called coresight-stm.
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config CORESIGHT_CPU_DEBUG
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config CORESIGHT_CPU_DEBUG
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tristate "CoreSight CPU Debug driver"
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tristate "CoreSight CPU Debug driver"
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depends on ARM || ARM64
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depends on ARM || ARM64
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@ -951,6 +951,17 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id)
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return ret;
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return ret;
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}
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}
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static int __exit stm_remove(struct amba_device *adev)
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{
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struct stm_drvdata *drvdata = dev_get_drvdata(&adev->dev);
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coresight_unregister(drvdata->csdev);
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stm_unregister_device(&drvdata->stm);
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return 0;
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}
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#ifdef CONFIG_PM
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#ifdef CONFIG_PM
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static int stm_runtime_suspend(struct device *dev)
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static int stm_runtime_suspend(struct device *dev)
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{
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{
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@ -983,6 +994,8 @@ static const struct amba_id stm_ids[] = {
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{ 0, 0},
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{ 0, 0},
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};
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};
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MODULE_DEVICE_TABLE(amba, stm_ids);
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static struct amba_driver stm_driver = {
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static struct amba_driver stm_driver = {
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.drv = {
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.drv = {
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.name = "coresight-stm",
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.name = "coresight-stm",
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@ -991,7 +1004,12 @@ static struct amba_driver stm_driver = {
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.suppress_bind_attrs = true,
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.suppress_bind_attrs = true,
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},
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},
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.probe = stm_probe,
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.probe = stm_probe,
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.remove = stm_remove,
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.id_table = stm_ids,
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.id_table = stm_ids,
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};
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};
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builtin_amba_driver(stm_driver);
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module_amba_driver(stm_driver);
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MODULE_AUTHOR("Pratik Patel <pratikp@codeaurora.org>");
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MODULE_DESCRIPTION("Arm CoreSight System Trace Macrocell driver");
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MODULE_LICENSE("GPL v2");
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