coresight: Add helpers registering/removing both AMBA and platform drivers

This adds two different helpers i.e coresight_init_driver()/remove_driver()
enabling coresight devices to register or remove AMBA and platform drivers.
This changes replicator and funnel devices to use above new helpers.

Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: James Clark <james.clark@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: coresight@lists.linaro.org
Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20240314055843.2625883-5-anshuman.khandual@arm.com

1 files changed, 29 insertions, 0 deletions

diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c
index b83613e34289..9fc6f6b863e0 100644
--- a/drivers/hwtracing/coresight/coresight-core.c
+++ b/drivers/hwtracing/coresight/coresight-core.c
@@ -1398,6 +1398,35 @@ static void __exit coresight_exit(void)
 module_init(coresight_init);
 module_exit(coresight_exit);
 
+int coresight_init_driver(const char *drv, struct amba_driver *amba_drv,
+			  struct platform_driver *pdev_drv)
+{
+	int ret;
+
+	ret = amba_driver_register(amba_drv);
+	if (ret) {
+		pr_err("%s: error registering AMBA driver\n", drv);
+		return ret;
+	}
+
+	ret = platform_driver_register(pdev_drv);
+	if (!ret)
+		return 0;
+
+	pr_err("%s: error registering platform driver\n", drv);
+	amba_driver_unregister(amba_drv);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(coresight_init_driver);
+
+void coresight_remove_driver(struct amba_driver *amba_drv,
+			     struct platform_driver *pdev_drv)
+{
+	amba_driver_unregister(amba_drv);
+	platform_driver_unregister(pdev_drv);
+}
+EXPORT_SYMBOL_GPL(coresight_remove_driver);
+
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("Pratik Patel <pratikp@codeaurora.org>");
 MODULE_AUTHOR("Mathieu Poirier <mathieu.poirier@linaro.org>");