From e5befc024cb4515d815662ed8746712cc5366bfc Mon Sep 17 00:00:00 2001
From: Eddie James <eajames@linux.ibm.com>
Date: Tue, 22 Dec 2020 09:26:39 -0600
Subject: hwmon: (pmbus) Add a PMBUS_NO_CAPABILITY platform data flag
Some PMBus chips don't respond with valid data when reading the
CAPABILITY register. Add a flag that device drivers can set so
that the PMBus core driver doesn't use CAPABILITY to determine it's
behavior.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20201222152640.27749-2-eajames@linux.ibm.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
include/linux/pmbus.h | 9 +++++++++
1 file changed, 9 insertions(+)
(limited to 'include')
diff --git a/include/linux/pmbus.h b/include/linux/pmbus.h
index 1ea5bae708a1..12cbbf305969 100644
--- a/include/linux/pmbus.h
+++ b/include/linux/pmbus.h
@@ -34,6 +34,15 @@
*/
#define PMBUS_WRITE_PROTECTED BIT(1)
+/*
+ * PMBUS_NO_CAPABILITY
+ *
+ * Some PMBus chips don't respond with valid data when reading the CAPABILITY
+ * register. For such chips, this flag should be set so that the PMBus core
+ * driver doesn't use CAPABILITY to determine it's behavior.
+ */
+#define PMBUS_NO_CAPABILITY BIT(2)
+
struct pmbus_platform_data {
u32 flags; /* Device specific flags */
--
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