linux-kernel - [PATCH v2 08/15] coresight: Make ETM4x TRCSTALLCTLR register accesses consistent with sysreg.h

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Date:   Thu,  3 Feb 2022 12:05:56 +0000
From:   James Clark <james.clark@....com>
To:     suzuki.poulose@....com, mathieu.poirier@...aro.org,
        coresight@...ts.linaro.org
Cc:     leo.yan@...aro.com, mike.leach@...aro.org,
        James Clark <james.clark@....com>,
        Leo Yan <leo.yan@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 08/15] coresight: Make ETM4x TRCSTALLCTLR register accesses consistent with sysreg.h

This is a no-op change for style and consistency and has no effect on the
binary produced by gcc-11.

Signed-off-by: James Clark <james.clark@....com>
---
 drivers/hwtracing/coresight/coresight-etm4x-sysfs.c | 12 ++++++------
 drivers/hwtracing/coresight/coresight-etm4x.h       |  4 ++++
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
index cfa6f72a1e39..d808eeae8b07 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
@@ -397,22 +397,22 @@ static ssize_t mode_store(struct device *dev,
 
 	/* bit[8], Instruction stall bit */
 	if ((config->mode & ETM_MODE_ISTALL_EN) && (drvdata->stallctl == true))
-		config->stall_ctrl |= BIT(8);
+		config->stall_ctrl |= TRCSTALLCTLR_ISTALL;
 	else
-		config->stall_ctrl &= ~BIT(8);
+		config->stall_ctrl &= ~TRCSTALLCTLR_ISTALL;
 
 	/* bit[10], Prioritize instruction trace bit */
 	if (config->mode & ETM_MODE_INSTPRIO)
-		config->stall_ctrl |= BIT(10);
+		config->stall_ctrl |= TRCSTALLCTLR_INSTPRIORITY;
 	else
-		config->stall_ctrl &= ~BIT(10);
+		config->stall_ctrl &= ~TRCSTALLCTLR_INSTPRIORITY;
 
 	/* bit[13], Trace overflow prevention bit */
 	if ((config->mode & ETM_MODE_NOOVERFLOW) &&
 		(drvdata->nooverflow == true))
-		config->stall_ctrl |= BIT(13);
+		config->stall_ctrl |= TRCSTALLCTLR_NOOVERFLOW;
 	else
-		config->stall_ctrl &= ~BIT(13);
+		config->stall_ctrl &= ~TRCSTALLCTLR_NOOVERFLOW;
 
 	/* bit[9] Start/stop logic control bit */
 	if (config->mode & ETM_MODE_VIEWINST_STARTSTOP)
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.h b/drivers/hwtracing/coresight/coresight-etm4x.h
index eb72b81bbf85..e37393934e0d 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x.h
+++ b/drivers/hwtracing/coresight/coresight-etm4x.h
@@ -220,6 +220,10 @@
 #define TRCEVENTCTL1R_ATB			BIT(11)
 #define TRCEVENTCTL1R_LPOVERRIDE		BIT(12)
 
+#define TRCSTALLCTLR_ISTALL			BIT(8)
+#define TRCSTALLCTLR_INSTPRIORITY		BIT(10)
+#define TRCSTALLCTLR_NOOVERFLOW			BIT(13)
+
 /*
  * System instructions to access ETM registers.
  * See ETMv4.4 spec ARM IHI0064F section 4.3.6 System instructions
-- 
2.28.0