openbmc.lists.ozlabs.org archive mirror
 help / color / mirror / Atom feed
* [PATCH] hwmon: (pmbus/ibm-cffps) Fix write bits for LED control
@ 2021-07-28 22:41 Brandon Wyman
  2021-07-28 23:14 ` Guenter Roeck
  0 siblings, 1 reply; 3+ messages in thread
From: Brandon Wyman @ 2021-07-28 22:41 UTC (permalink / raw)
  To: Joel Stanley, openbmc, Guenter Roeck, Jean Delvare, linux-hwmon,
	linux-kernel, Eddie James
  Cc: B. J. Wyman

From: "B. J. Wyman" <bjwyman@gmail.com>

When doing a PMBus write for the LED control on the IBM Common Form
Factor Power Supplies (ibm-cffps), the DAh command requires that bit 7
be low and bit 6 be high in order to indicate that you are truly
attempting to do a write.

Signed-off-by: B. J. Wyman <bjwyman@gmail.com>
---
 drivers/hwmon/pmbus/ibm-cffps.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/hwmon/pmbus/ibm-cffps.c b/drivers/hwmon/pmbus/ibm-cffps.c
index 5668d8305b78..df712ce4b164 100644
--- a/drivers/hwmon/pmbus/ibm-cffps.c
+++ b/drivers/hwmon/pmbus/ibm-cffps.c
@@ -50,9 +50,9 @@
 #define CFFPS_MFR_VAUX_FAULT			BIT(6)
 #define CFFPS_MFR_CURRENT_SHARE_WARNING		BIT(7)
 
-#define CFFPS_LED_BLINK				BIT(0)
-#define CFFPS_LED_ON				BIT(1)
-#define CFFPS_LED_OFF				BIT(2)
+#define CFFPS_LED_BLINK				(BIT(0) | BIT(6))
+#define CFFPS_LED_ON				(BIT(1) | BIT(6))
+#define CFFPS_LED_OFF				(BIT(2) | BIT(6))
 #define CFFPS_BLINK_RATE_MS			250
 
 enum {
-- 
2.25.1


^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2021-08-06 22:36 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-07-28 22:41 [PATCH] hwmon: (pmbus/ibm-cffps) Fix write bits for LED control Brandon Wyman
2021-07-28 23:14 ` Guenter Roeck
2021-08-06 22:35   ` Brandon Wyman

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).