@@ -1836,6 +1836,35 @@ 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>");
@@ -12,6 +12,8 @@
#include <linux/io.h>
#include <linux/perf_event.h>
#include <linux/sched.h>
+#include <linux/amba/bus.h>
+#include <linux/platform_device.h>
/* Peripheral id registers (0xFD0-0xFEC) */
#define CORESIGHT_PERIPHIDR4 0xfd0
@@ -598,6 +600,11 @@ void coresight_relaxed_write64(struct coresight_device *csdev,
u64 val, u32 offset);
void coresight_write64(struct coresight_device *csdev, u64 val, u32 offset);
+int coresight_init_driver(const char *drv, struct amba_driver *amba_drv,
+ struct platform_driver *pdev_drv);
+
+void coresight_remove_driver(struct amba_driver *amba_drv,
+ struct platform_driver *pdev_drv);
#else
static inline struct coresight_device *
coresight_register(struct coresight_desc *desc) { return NULL; }
This adds two different helpers i.e coresight_init_driver()/remove_driver() enabling coresight devices to register or remove AMBA and platform drivers. 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 Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> --- drivers/hwtracing/coresight/coresight-core.c | 29 ++++++++++++++++++++ include/linux/coresight.h | 7 +++++ 2 files changed, 36 insertions(+)