[SRU][N][PATCH 2/3] coresight: tmc: Extract device properties from AMBA pid based table lookup

[Noah Wager]

From: Anshuman Khandual <anshuman.khandual at arm.com>

BugLink: https://bugs.launchpad.net/bugs/2142337

This extracts device properties from AMBA pid based table lookup. But first
this modifies tmc_etr_setup_caps() to accept csdev access.

Cc: Suzuki K Poulose <suzuki.poulose at arm.com>
Cc: Mike Leach <mike.leach at linaro.org>
Cc: James Clark <james.clark at arm.com>
Cc: coresight at lists.linaro.org
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-kernel at vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual at arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose at arm.com>
Link: https://lore.kernel.org/r/20240314055843.2625883-4-anshuman.khandual@arm.com
(cherry picked from commit 3ab210297c31b8fef1cfb2aa3d85b227b9ace09b)
Signed-off-by: Noah Wager <noah.wager at canonical.com>
---
 drivers/hwtracing/coresight/coresight-tmc-core.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwtracing/coresight/coresight-tmc-core.c
index 9fe37c9b4901..b50aa3ec4521 100644
--- a/drivers/hwtracing/coresight/coresight-tmc-core.c
+++ b/drivers/hwtracing/coresight/coresight-tmc-core.c
@@ -372,16 +372,23 @@ static inline bool tmc_etr_has_non_secure_access(struct tmc_drvdata *drvdata)
 	return (auth & TMC_AUTH_NSID_MASK) == 0x3;
 }
 
+static const struct amba_id tmc_ids[];
+
 /* Detect and initialise the capabilities of a TMC ETR */
-static int tmc_etr_setup_caps(struct device *parent, u32 devid, void *dev_caps)
+static int tmc_etr_setup_caps(struct device *parent, u32 devid,
+			      struct csdev_access *access)
 {
 	int rc;
-	u32 dma_mask = 0;
+	u32 tmc_pid, dma_mask = 0;
 	struct tmc_drvdata *drvdata = dev_get_drvdata(parent);
+	void *dev_caps;
 
 	if (!tmc_etr_has_non_secure_access(drvdata))
 		return -EACCES;
 
+	tmc_pid = coresight_get_pid(access);
+	dev_caps = coresight_get_uci_data_from_amba(tmc_ids, tmc_pid);
+
 	/* Set the unadvertised capabilities */
 	tmc_etr_init_caps(drvdata, (u32)(unsigned long)dev_caps);
 
@@ -496,8 +503,7 @@ static int __tmc_probe(struct device *dev, struct resource *res)
 		desc.type = CORESIGHT_DEV_TYPE_SINK;
 		desc.subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_SYSMEM;
 		desc.ops = &tmc_etr_cs_ops;
-		ret = tmc_etr_setup_caps(dev, devid,
-					 coresight_get_uci_data(id));
+		ret = tmc_etr_setup_caps(dev, devid, &desc.access);
 		if (ret)
 			goto out;
 		idr_init(&drvdata->idr);
-- 
2.43.0