linux-kernel - [PATCH] pmbus core: Add power good support

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Date:   Thu, 17 Nov 2022 19:40:22 +0100
From:   Naresh Solanki <naresh.solanki@...ements.com>
To:     Guenter Roeck <linux@...ck-us.net>, linux-hwmon@...r.kernel.org,
        Jean Delvare <jdelvare@...e.com>
Cc:     Patrick Rudolph <patrick.rudolph@...ements.com>,
        Naresh Solanki <Naresh.Solanki@...ements.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] pmbus core: Add power good support

From: Patrick Rudolph <patrick.rudolph@...ements.com>

Update error flags with regulation out if regulator is on & power
good status bit is set

Signed-off-by: Patrick Rudolph <patrick.rudolph@...ements.com>
Signed-off-by: Naresh Solanki <Naresh.Solanki@...ements.com>
---
 drivers/hwmon/pmbus/pmbus_core.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index 7ec04934747e..20ca26e19db7 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -2827,9 +2827,13 @@ static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned
 	if (status < 0)
 		return status;
 
-	if (pmbus_regulator_is_enabled(rdev) && (status & PB_STATUS_OFF))
-		*flags |= REGULATOR_ERROR_FAIL;
+	if (pmbus_regulator_is_enabled(rdev)) {
+		if (status & PB_STATUS_OFF)
+			*flags |= REGULATOR_ERROR_FAIL;
 
+		if (status & PB_STATUS_POWER_GOOD_N)
+			*flags |= REGULATOR_ERROR_REGULATION_OUT;
+	}
 	/*
 	 * Unlike most other status bits, PB_STATUS_{IOUT_OC,VOUT_OV} are
 	 * defined strictly as fault indicators (not warnings).

base-commit: 27fea302952d8c90cafbdbee96bafeca03544401
-- 
2.37.3