linux-kernel - [PATCH 05/15] coresight: Make ETM4x TRCIDR5 register accesses consistent with sysreg.h

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Date:   Wed,  2 Feb 2022 16:02:15 +0000
From:   James Clark <james.clark@....com>
To:     mathieu.poirier@...aro.org, coresight@...ts.linaro.org
Cc:     suzuki.poulose@....com, 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 05/15] coresight: Make ETM4x TRCIDR5 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>
---
 .../hwtracing/coresight/coresight-etm4x-core.c | 18 ++++++------------
 drivers/hwtracing/coresight/coresight-etm4x.h  | 11 +++++++++++
 2 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c
index 78f01c9e45cb..afb1b39e3a38 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x-core.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c
@@ -1183,26 +1183,20 @@ static void etm4_init_arch_data(void *info)
 
 	etmidr5 = etm4x_relaxed_read32(csa, TRCIDR5);
 	/* NUMEXTIN, bits[8:0] number of external inputs implemented */
-	drvdata->nr_ext_inp = BMVAL(etmidr5, 0, 8);
+	drvdata->nr_ext_inp = REG_VAL(etmidr5, TRCIDR5_NUMEXTIN);
 	/* TRACEIDSIZE, bits[21:16] indicates the trace ID width */
-	drvdata->trcid_size = BMVAL(etmidr5, 16, 21);
+	drvdata->trcid_size = REG_VAL(etmidr5, TRCIDR5_TRACEIDSIZE);
 	/* ATBTRIG, bit[22] implementation can support ATB triggers? */
-	if (BMVAL(etmidr5, 22, 22))
-		drvdata->atbtrig = true;
-	else
-		drvdata->atbtrig = false;
+	drvdata->atbtrig = !!(etmidr5 & TRCIDR5_ATBTRIG);
 	/*
 	 * LPOVERRIDE, bit[23] implementation supports
 	 * low-power state override
 	 */
-	if (BMVAL(etmidr5, 23, 23) && (!drvdata->skip_power_up))
-		drvdata->lpoverride = true;
-	else
-		drvdata->lpoverride = false;
+	drvdata->lpoverride = (etmidr5 & TRCIDR5_LPOVERRIDE) && (!drvdata->skip_power_up);
 	/* NUMSEQSTATE, bits[27:25] number of sequencer states implemented */
-	drvdata->nrseqstate = BMVAL(etmidr5, 25, 27);
+	drvdata->nrseqstate = REG_VAL(etmidr5, TRCIDR5_NUMSEQSTATE);
 	/* NUMCNTR, bits[30:28] number of counters available for tracing */
-	drvdata->nr_cntr = BMVAL(etmidr5, 28, 30);
+	drvdata->nr_cntr = REG_VAL(etmidr5, TRCIDR5_NUMCNTR);
 	etm4_cs_lock(drvdata, csa);
 	cpu_detect_trace_filtering(drvdata);
 }
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.h b/drivers/hwtracing/coresight/coresight-etm4x.h
index 0b22c57a9da1..ca6ed39ceaf7 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x.h
+++ b/drivers/hwtracing/coresight/coresight-etm4x.h
@@ -183,6 +183,17 @@
 #define TRCIDR4_NUMVMIDC_SHIFT			28
 #define TRCIDR4_NUMVMIDC_MASK			GENMASK(3, 0)
 
+#define TRCIDR5_NUMEXTIN_SHIFT			0
+#define TRCIDR5_NUMEXTIN_MASK			GENMASK(8, 0)
+#define TRCIDR5_TRACEIDSIZE_SHIFT		16
+#define TRCIDR5_TRACEIDSIZE_MASK		GENMASK(5, 0)
+#define TRCIDR5_ATBTRIG				BIT(22)
+#define TRCIDR5_LPOVERRIDE			BIT(23)
+#define TRCIDR5_NUMSEQSTATE_SHIFT		25
+#define TRCIDR5_NUMSEQSTATE_MASK		GENMASK(2, 0)
+#define TRCIDR5_NUMCNTR_SHIFT			28
+#define TRCIDR5_NUMCNTR_MASK			GENMASK(2, 0)
+
 /*
  * System instructions to access ETM registers.
  * See ETMv4.4 spec ARM IHI0064F section 4.3.6 System instructions
-- 
2.28.0