linux-kernel - Re: [PATCH] hwmon: (pmbus/ibm-cffps) Fix write bits for LED control

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Message-ID: <CAK_vbW2fU+i6H5bV79eQAnFUzfuO-czyxbT9cbJmv34Sei5Log@mail.gmail.com>
Date:   Fri, 6 Aug 2021 17:35:15 -0500
From:   Brandon Wyman <bjwyman@...il.com>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     Joel Stanley <joel@....id.au>,
        OpenBMC Maillist <openbmc@...ts.ozlabs.org>,
        Jean Delvare <jdelvare@...e.com>, linux-hwmon@...r.kernel.org,
        linux-kernel@...r.kernel.org, Eddie James <eajames@...ux.ibm.com>
Subject: Re: [PATCH] hwmon: (pmbus/ibm-cffps) Fix write bits for LED control

On Wed, Jul 28, 2021 at 6:14 PM Guenter Roeck <linux@...ck-us.net> wrote:
>
> On 7/28/21 3:41 PM, Brandon Wyman wrote:
> > From: "B. J. Wyman" <bjwyman@...il.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@...il.com>
>
> Please be consistent and use "Brandon Wyman".

Ack. Curiously, that is the first time someone has pointed out that
inconsistency.

>
> Guenter
>
> > ---
> >   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 {
> >
>