From fd9b7e8e9fbc23d69fa4accc881dea2cf13a2e2e Mon Sep 17 00:00:00 2001 From: Mao Jinlong Date: Thu, 21 Nov 2024 14:28:28 +0800 Subject: coresight: Add support to get static id for system trace sources Dynamic trace id was introduced in coresight subsystem, so trace id is allocated dynamically. However, some hardware ATB source has static trace id and it cannot be changed via software programming. For such source, it can call coresight_get_static_trace_id to get the fixed trace id from device node and pass id to coresight_trace_id_get_static_system_id to reserve the id. Signed-off-by: Mao Jinlong Reviewed-by: Mike Leach Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20241121062829.11571-3-quic_jinlmao@quicinc.com --- include/linux/coresight.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/coresight.h b/include/linux/coresight.h index 834029cb9ba2..055ce5cd5c44 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -662,6 +662,7 @@ void coresight_relaxed_write64(struct coresight_device *csdev, void coresight_write64(struct coresight_device *csdev, u64 val, u32 offset); extern int coresight_get_cpu(struct device *dev); +extern int coresight_get_static_trace_id(struct device *dev, u32 *id); struct coresight_platform_data *coresight_get_platform_data(struct device *dev); struct coresight_connection * -- cgit v1.2.3