From: "Jan Kundrát" <jan.kundrat@cesnet.cz>
To: Guenter Roeck <linux@roeck-us.net>
Cc: <linux-hwmon@vger.kernel.org>, Jean Delvare <jdelvare@suse.com>,
<kubernat@cesnet.cz>
Subject: Re: [PATCH 2/7] hwmon: (max31790) Report correct current pwm duty cycles
Date: Wed, 02 Jun 2021 14:36:47 +0200 [thread overview]
Message-ID: <ac3e8a59-57ed-44ff-9468-69eb0cdf560e@cesnet.cz> (raw)
In-Reply-To: <20210526154022.3223012-3-linux@roeck-us.net>
On středa 26. května 2021 17:40:17 CEST, Guenter Roeck wrote:
> The MAX31790 has two sets of registers for pwm duty cycles, one to request
> a duty cycle and one to read the actual current duty cycle. Both do not
> have to be the same.
>
> When reporting the pwm duty cycle to the user, the actual pwm duty cycle
> from pwm duty cycle registers needs to be reported. When setting it, the
> pwm target duty cycle needs to be written. Since we don't know the actual
> pwm duty cycle after a target pwm duty cycle has been written, set the
> valid flag to false to indicate that actual pwm duty cycle should be read
> from the chip instead of using cached values.
>
> Cc: Jan Kundrát <jan.kundrat@cesnet.cz>
> Cc: Václav Kubernát <kubernat@cesnet.cz>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Cheers,
Jan
next prev parent reply other threads:[~2021-06-02 12:36 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-26 15:40 [PATCH 0/7] hwmon: (max31790) Fixes and improvements Guenter Roeck
2021-05-26 15:40 ` [PATCH 1/7] hwmon: (max31790) Fix fan speed reporting for fan7..12 Guenter Roeck
2021-06-02 12:27 ` Jan Kundrát
2021-05-26 15:40 ` [PATCH 2/7] hwmon: (max31790) Report correct current pwm duty cycles Guenter Roeck
2021-06-01 7:51 ` Václav Kubernát
2021-06-02 12:36 ` Jan Kundrát [this message]
2021-05-26 15:40 ` [PATCH 3/7] hwmon: (max31790) Fix pwmX_enable attributes Guenter Roeck
2021-06-01 8:01 ` Václav Kubernát
2021-06-02 10:47 ` Guenter Roeck
2021-06-02 12:44 ` Jan Kundrát
2021-05-26 15:40 ` [PATCH 4/7] hwmon: (max31790) Add support for fanX_enable attributes Guenter Roeck
2021-06-01 8:02 ` Václav Kubernát
2021-06-02 13:04 ` Jan Kundrát
2021-06-02 16:43 ` Guenter Roeck
2021-05-26 15:40 ` [PATCH 5/7] hwmon: (max31790) Clear fan fault after reporting it Guenter Roeck
2021-06-01 8:08 ` Václav Kubernát
2021-05-26 15:40 ` [PATCH 6/7] hwmon: (max31790) Detect and report zero fan speed Guenter Roeck
2021-06-01 8:11 ` Václav Kubernát
2021-05-26 15:40 ` [PATCH 7/7] hwmon: (max31790) Add support for fanX_min attributes Guenter Roeck
2021-06-01 8:19 ` Václav Kubernát
2021-06-01 8:29 ` [PATCH 0/7] hwmon: (max31790) Fixes and improvements Václav Kubernát
2021-06-01 12:08 ` Guenter Roeck
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