coresight: etm4x: Cleanup TRCIDR5 register accesses

This is a no-op change for style and consistency and has no effect on
the binary output by the compiler. In sysreg.h fields are defined as
the register name followed by the field name and then _MASK. This
allows for grepping for fields by name rather than using magic numbers.

Signed-off-by: James Clark <james.clark@arm.com>
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Link: https://lore.kernel.org/r/20220304171913.2292458-6-james.clark@arm.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>

drivers/hwtracing/coresight/coresight-etm4x-core.c

@@ -1188,26 +1188,20 @@ 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 = FIELD_GET(TRCIDR5_NUMEXTIN_MASK, etmidr5);
 	/* TRACEIDSIZE, bits[21:16] indicates the trace ID width */
-	drvdata->trcid_size = BMVAL(etmidr5, 16, 21);
+	drvdata->trcid_size = FIELD_GET(TRCIDR5_TRACEIDSIZE_MASK, etmidr5);
 	/* 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 = FIELD_GET(TRCIDR5_NUMSEQSTATE_MASK, etmidr5);
 	/* NUMCNTR, bits[30:28] number of counters available for tracing */
-	drvdata->nr_cntr = BMVAL(etmidr5, 28, 30);
+	drvdata->nr_cntr = FIELD_GET(TRCIDR5_NUMCNTR_MASK, etmidr5);
 	etm4_cs_lock(drvdata, csa);
 	cpu_detect_trace_filtering(drvdata);
 }

drivers/hwtracing/coresight/coresight-etm4x.h

@@ -165,6 +165,13 @@
 #define TRCIDR4_NUMCIDC_MASK			GENMASK(27, 24)
 #define TRCIDR4_NUMVMIDC_MASK			GENMASK(31, 28)
 
+#define TRCIDR5_NUMEXTIN_MASK			GENMASK(8, 0)
+#define TRCIDR5_TRACEIDSIZE_MASK		GENMASK(21, 16)
+#define TRCIDR5_ATBTRIG				BIT(22)
+#define TRCIDR5_LPOVERRIDE			BIT(23)
+#define TRCIDR5_NUMSEQSTATE_MASK		GENMASK(27, 25)
+#define TRCIDR5_NUMCNTR_MASK			GENMASK(30, 28)
+
 /*
  * System instructions to access ETM registers.
  * See ETMv4.4 spec ARM IHI0064F section 4.3.6 System instructions