From: Guenter Roeck <linux@roeck-us.net>
Date: Tue, 18 Sep 2018 17:52:55 +0000 (-0700)
Subject: hwmon: (nct6775) Fix fan6/pwm6 detection for NCT6792D
X-Git-Tag: v4.20-rc1~188^2~24
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=7dcdbdeb1b45b9071ad986bf20d8c2da6a057eb6;p=thirdparty%2Fkernel%2Flinux.git

hwmon: (nct6775) Fix fan6/pwm6 detection for NCT6792D

Per datasheet, AUXFANIN3 (fan6) and AUXFANOUT3 (pwm6) are only connected
if DSW_EN is false.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---

diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c
index 0ad4bf0ab8be1..6e11df697e6e6 100644
--- a/drivers/hwmon/nct6775.c
+++ b/drivers/hwmon/nct6775.c
@@ -3522,10 +3522,13 @@ nct6775_check_fan_inputs(struct nct6775_data *data)
 
 		switch (data->kind) {
 		case nct6791:
-		case nct6792:
 			fan6pin = cr2d & BIT(1);
 			pwm6pin = cr2d & BIT(0);
 			break;
+		case nct6792:
+			fan6pin = !dsw_en && (cr2d & BIT(1));
+			pwm6pin = !dsw_en && (cr2d & BIT(0));
+			break;
 		case nct6793:
 		case nct6795:
 		case nct6796: