diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/hwtracing/coresight/coresight-cti.c | 36 | ||||
-rw-r--r-- | drivers/hwtracing/coresight/coresight-priv.h | 14 | ||||
-rw-r--r-- | drivers/hwtracing/coresight/coresight.c | 21 |
3 files changed, 55 insertions, 16 deletions
diff --git a/drivers/hwtracing/coresight/coresight-cti.c b/drivers/hwtracing/coresight/coresight-cti.c index 47f3c9abae30..5003d1f59af0 100644 --- a/drivers/hwtracing/coresight/coresight-cti.c +++ b/drivers/hwtracing/coresight/coresight-cti.c @@ -539,7 +539,7 @@ cti_match_fixup_csdev(struct cti_device *ctidev, const char *node_name, * This will set the association if CTI declared before the CS device. * (called from coresight_register() with coresight_mutex locked). */ -void cti_add_assoc_to_csdev(struct coresight_device *csdev) +static void cti_add_assoc_to_csdev(struct coresight_device *csdev) { struct cti_drvdata *ect_item; struct cti_device *ctidev; @@ -572,13 +572,12 @@ void cti_add_assoc_to_csdev(struct coresight_device *csdev) cti_add_done: mutex_unlock(&ect_mutex); } -EXPORT_SYMBOL_GPL(cti_add_assoc_to_csdev); /* * Removing the associated devices is easier. * A CTI will not have a value for csdev->ect_dev. */ -void cti_remove_assoc_from_csdev(struct coresight_device *csdev) +static void cti_remove_assoc_from_csdev(struct coresight_device *csdev) { struct cti_drvdata *ctidrv; struct cti_trig_con *tc; @@ -599,7 +598,15 @@ void cti_remove_assoc_from_csdev(struct coresight_device *csdev) } mutex_unlock(&ect_mutex); } -EXPORT_SYMBOL_GPL(cti_remove_assoc_from_csdev); + +/* + * Operations to add and remove associated CTI. + * Register to coresight core driver as call back function. + */ +static struct cti_assoc_op cti_assoc_ops = { + .add = cti_add_assoc_to_csdev, + .remove = cti_remove_assoc_from_csdev +}; /* * Update the cross references where the associated device was found @@ -956,4 +963,23 @@ static struct amba_driver cti_driver = { .probe = cti_probe, .id_table = cti_ids, }; -builtin_amba_driver(cti_driver); + +static int __init cti_init(void) +{ + int ret; + + ret = amba_driver_register(&cti_driver); + if (ret) + pr_info("Error registering cti driver\n"); + coresight_set_cti_ops(&cti_assoc_ops); + return ret; +} + +static void __exit cti_exit(void) +{ + coresight_remove_cti_ops(); + amba_driver_unregister(&cti_driver); +} + +module_init(cti_init); +module_exit(cti_exit); diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h index d638c7d48815..65a29293b6cb 100644 --- a/drivers/hwtracing/coresight/coresight-priv.h +++ b/drivers/hwtracing/coresight/coresight-priv.h @@ -173,15 +173,13 @@ static inline int etm_readl_cp14(u32 off, unsigned int *val) { return 0; } static inline int etm_writel_cp14(u32 off, u32 val) { return 0; } #endif -#ifdef CONFIG_CORESIGHT_CTI -extern void cti_add_assoc_to_csdev(struct coresight_device *csdev); -extern void cti_remove_assoc_from_csdev(struct coresight_device *csdev); +struct cti_assoc_op { + void (*add)(struct coresight_device *csdev); + void (*remove)(struct coresight_device *csdev); +}; -#else -static inline void cti_add_assoc_to_csdev(struct coresight_device *csdev) {} -static inline void -cti_remove_assoc_from_csdev(struct coresight_device *csdev) {} -#endif +extern void coresight_set_cti_ops(const struct cti_assoc_op *cti_op); +extern void coresight_remove_cti_ops(void); /* * Macros and inline functions to handle CoreSight UCI data and driver diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c index 4faa4aa3964d..4f4485b17458 100644 --- a/drivers/hwtracing/coresight/coresight.c +++ b/drivers/hwtracing/coresight/coresight.c @@ -56,6 +56,20 @@ static struct list_head *stm_path; const u32 coresight_barrier_pkt[4] = {0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff}; EXPORT_SYMBOL_GPL(coresight_barrier_pkt); +static const struct cti_assoc_op *cti_assoc_ops; + +void coresight_set_cti_ops(const struct cti_assoc_op *cti_op) +{ + cti_assoc_ops = cti_op; +} +EXPORT_SYMBOL_GPL(coresight_set_cti_ops); + +void coresight_remove_cti_ops(void) +{ + cti_assoc_ops = NULL; +} +EXPORT_SYMBOL_GPL(coresight_remove_cti_ops); + static int coresight_id_match(struct device *dev, void *data) { int trace_id, i_trace_id; @@ -1232,7 +1246,8 @@ static void coresight_device_release(struct device *dev) { struct coresight_device *csdev = to_coresight_device(dev); - cti_remove_assoc_from_csdev(csdev); + if (cti_assoc_ops && cti_assoc_ops->remove) + cti_assoc_ops->remove(csdev); fwnode_handle_put(csdev->dev.fwnode); kfree(csdev->refcnt); kfree(csdev); @@ -1543,8 +1558,8 @@ struct coresight_device *coresight_register(struct coresight_desc *desc) ret = coresight_fixup_device_conns(csdev); if (!ret) ret = coresight_fixup_orphan_conns(csdev); - if (!ret) - cti_add_assoc_to_csdev(csdev); + if (!ret && cti_assoc_ops && cti_assoc_ops->add) + cti_assoc_ops->add(csdev); mutex_unlock(&coresight_mutex); if (ret) { |