linux-kernel - [PATCH] fpga: dfl: fme: use SI unit prefix macros

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Message-Id: <20230705033548.10737-1-peter.colberg@intel.com>
Date:   Tue,  4 Jul 2023 23:35:48 -0400
From:   Peter Colberg <peter.colberg@...el.com>
To:     Wu Hao <hao.wu@...el.com>, Tom Rix <trix@...hat.com>,
        Moritz Fischer <mdf@...nel.org>, Xu Yilun <yilun.xu@...el.com>,
        linux-fpga@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        tianfei.zhang@...el.com, russell.h.weight@...el.com,
        matthew.gerlach@...ux.intel.com, marpagan@...hat.com,
        lgoncalv@...hat.com, Peter Colberg <peter.colberg@...el.com>
Subject: [PATCH] fpga: dfl: fme: use SI unit prefix macros

Substitute SI prefixes MILLI for temperature and MICRO for power, which
are exported via the hwmon sysfs interface in m°C and ųW, respectively.

Suggested-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Signed-off-by: Peter Colberg <peter.colberg@...el.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/fpga/dfl-fme-main.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/fpga/dfl-fme-main.c b/drivers/fpga/dfl-fme-main.c
index bcb5d34b3b82..3dcf990bd261 100644
--- a/drivers/fpga/dfl-fme-main.c
+++ b/drivers/fpga/dfl-fme-main.c
@@ -19,6 +19,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/uaccess.h>
+#include <linux/units.h>
 #include <linux/fpga-dfl.h>
 
 #include "dfl.h"
@@ -231,19 +232,19 @@ static int thermal_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
 	switch (attr) {
 	case hwmon_temp_input:
 		v = readq(feature->ioaddr + FME_THERM_RDSENSOR_FMT1);
-		*val = (long)(FIELD_GET(FPGA_TEMPERATURE, v) * 1000);
+		*val = (long)(FIELD_GET(FPGA_TEMPERATURE, v) * MILLI);
 		break;
 	case hwmon_temp_max:
 		v = readq(feature->ioaddr + FME_THERM_THRESHOLD);
-		*val = (long)(FIELD_GET(TEMP_THRESHOLD1, v) * 1000);
+		*val = (long)(FIELD_GET(TEMP_THRESHOLD1, v) * MILLI);
 		break;
 	case hwmon_temp_crit:
 		v = readq(feature->ioaddr + FME_THERM_THRESHOLD);
-		*val = (long)(FIELD_GET(TEMP_THRESHOLD2, v) * 1000);
+		*val = (long)(FIELD_GET(TEMP_THRESHOLD2, v) * MILLI);
 		break;
 	case hwmon_temp_emergency:
 		v = readq(feature->ioaddr + FME_THERM_THRESHOLD);
-		*val = (long)(FIELD_GET(TRIP_THRESHOLD, v) * 1000);
+		*val = (long)(FIELD_GET(TRIP_THRESHOLD, v) * MILLI);
 		break;
 	case hwmon_temp_max_alarm:
 		v = readq(feature->ioaddr + FME_THERM_THRESHOLD);
@@ -382,15 +383,15 @@ static int power_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
 	switch (attr) {
 	case hwmon_power_input:
 		v = readq(feature->ioaddr + FME_PWR_STATUS);
-		*val = (long)(FIELD_GET(PWR_CONSUMED, v) * 1000000);
+		*val = (long)(FIELD_GET(PWR_CONSUMED, v) * MICRO);
 		break;
 	case hwmon_power_max:
 		v = readq(feature->ioaddr + FME_PWR_THRESHOLD);
-		*val = (long)(FIELD_GET(PWR_THRESHOLD1, v) * 1000000);
+		*val = (long)(FIELD_GET(PWR_THRESHOLD1, v) * MICRO);
 		break;
 	case hwmon_power_crit:
 		v = readq(feature->ioaddr + FME_PWR_THRESHOLD);
-		*val = (long)(FIELD_GET(PWR_THRESHOLD2, v) * 1000000);
+		*val = (long)(FIELD_GET(PWR_THRESHOLD2, v) * MICRO);
 		break;
 	case hwmon_power_max_alarm:
 		v = readq(feature->ioaddr + FME_PWR_THRESHOLD);
@@ -415,7 +416,7 @@ static int power_hwmon_write(struct device *dev, enum hwmon_sensor_types type,
 	int ret = 0;
 	u64 v;
 
-	val = clamp_val(val / 1000000, 0, PWR_THRESHOLD_MAX);
+	val = clamp_val(val / MICRO, 0, PWR_THRESHOLD_MAX);
 
 	mutex_lock(&pdata->lock);
 
-- 
2.28.0