linux-kernel - [PATCH] Enable adm1272 temperature reporting

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Message-Id: <20210512170418.2432278-1-linchuyuan@google.com>
Date:   Wed, 12 May 2021 17:04:18 +0000
From:   Chu Lin <linchuyuan@...gle.com>
To:     linchuyuan@...il.com, jasonling@...gle.com, zhongqil@...gle.com,
        linux@...ck-us.net, jdelvare@...e.com, linux-hwmon@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Chu Lin <linchuyuan@...gle.com>
Subject: [PATCH] Enable adm1272 temperature reporting

adm1272 supports temperature reporting but it is disabled by default.

Tested:
ls temp1_*
temp1_crit           temp1_highest        temp1_max
temp1_crit_alarm     temp1_input          temp1_max_alarm

cat temp1_input
26642

Signed-off-by: Chu Lin <linchuyuan@...gle.com>
---
 drivers/hwmon/pmbus/adm1275.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/hwmon/pmbus/adm1275.c b/drivers/hwmon/pmbus/adm1275.c
index e7997f37b266..0be1b5777d2f 100644
--- a/drivers/hwmon/pmbus/adm1275.c
+++ b/drivers/hwmon/pmbus/adm1275.c
@@ -611,11 +611,13 @@ static int adm1275_probe(struct i2c_client *client)
 		tindex = 8;
 
 		info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
-			PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
+			PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
+			PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
 
-		/* Enable VOUT if not enabled (it is disabled by default) */
-		if (!(config & ADM1278_VOUT_EN)) {
-			config |= ADM1278_VOUT_EN;
+		/* Enable VOUT & TEMP1 if not enabled (disabled by default) */
+		if ((config & (ADM1278_VOUT_EN | ADM1278_TEMP1_EN)) !=
+		    (ADM1278_VOUT_EN | ADM1278_TEMP1_EN)) {
+			config |= ADM1278_VOUT_EN | ADM1278_TEMP1_EN;
 			ret = i2c_smbus_write_byte_data(client,
 							ADM1275_PMON_CONFIG,
 							config);
@@ -625,10 +627,6 @@ static int adm1275_probe(struct i2c_client *client)
 				return -ENODEV;
 			}
 		}
-
-		if (config & ADM1278_TEMP1_EN)
-			info->func[0] |=
-				PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
 		if (config & ADM1278_VIN_EN)
 			info->func[0] |= PMBUS_HAVE_VIN;
 		break;
-- 
2.31.1.607.g51e8a6a459-goog