linux-kernel - Re: [PATCH v1 3/3] Documentation:leds: Add leds-st1202.rst

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Message-ID: <0ae13ad4-342a-48ca-bd7a-8f15f6d99504@infradead.org>
Date: Sat, 26 Oct 2024 10:17:35 -0700
From: Randy Dunlap <rdunlap@...radead.org>
To: Vicentiu Galanopulo <vicentiu.galanopulo@...ote-tech.co.uk>,
 pavel@....cz, lee@...nel.org, corbet@....net, linux-leds@...r.kernel.org,
 linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 3/3] Documentation:leds: Add leds-st1202.rst

Hi,

On 10/26/24 7:48 AM, Vicentiu Galanopulo wrote:
> Add usage for sysfs hw_pattern entry for leds-st1202 
> 
> Signed-off-by: Vicentiu Galanopulo <vicentiu.galanopulo@...ote-tech.co.uk>
> ---
>  Documentation/leds/leds-st1202.rst | 36 ++++++++++++++++++++++++++++++
>  1 file changed, 36 insertions(+)
>  create mode 100644 Documentation/leds/leds-st1202.rst
> 
> diff --git a/Documentation/leds/leds-st1202.rst b/Documentation/leds/leds-st1202.rst
> new file mode 100644
> index 000000000000..72286a512c69
> --- /dev/null
> +++ b/Documentation/leds/leds-st1202.rst
> @@ -0,0 +1,36 @@
> +.. SPDX-License-Identifier: GPL-2.0
> +
> +============================================
> +Kernel driver for STMicroelectronics LED1202
> +============================================
> +
> +/sys/class/leds/<led>/hw_pattern
> +--------------------------------
> +
> +Specify a hardware pattern for the ST1202 LED. The LED
> +controller, implements 12 low-side current generators

no comma     ^

> +with independent dimming control. Internal volatile memory
> +allows the user to store up to 8 different patterns.
> +Each pattern is a particular output configuration in terms
> +of PWM duty-cycle and duration (ms).
> +
> +To be compatible with the hardware pattern
> +format, maximum 8 tuples of brightness (PWM) and duration must
> +be written to hw_pattern.
> +
> +- Min pattern duration: 22 ms
> +- Max pattern duration: 5660 ms
> +
> +The format of the hardware pattern values should be:
> +"brightness duration brightness duration ..."
> +
> +/sys/class/leds/<led>/repeat
> +----------------------------
> +
> +Specify a pattern repeat number, which is common for all channels.
> +Default is 1, other negative numbers and number 0 are invalid.

   Default is 1; negative numbers and 0 are invalid.

> +
> +This file will always return the originally written repeat number.
> +
> +When the 255 value is written to it, all patterns will repeat
> +indefinitely.

-- 
~Randy