linux-kernel - Re: [PATCH 1/5] leds: introduce led_color

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Date: Fri, 31 May 2024 16:42:42 +0100
From: Lee Jones <lee@...nel.org>
To: Thomas Weißschuh <linux@...ssschuh.net>
Cc: Pavel Machek <pavel@....cz>,
	Thomas Weißschuh <thomas@...ssschuh.net>,
	Benson Leung <bleung@...omium.org>,
	Guenter Roeck <groeck@...omium.org>, linux-leds@...r.kernel.org,
	linux-kernel@...r.kernel.org, chrome-platform@...ts.linux.dev,
	Dustin Howett <dustin@...ett.net>,
	Mario Limonciello <mario.limonciello@....com>
Subject: Re: [PATCH 1/5] leds: introduce led_color_name function

It would save me a lot of work if you could follow the conventions of
the subsystem when drafting subjects.

`git log --online -- <subsystem>` is your friend.

> This is similar to the existing led_colors array but is safer to use and
> usable by everyone.

Place spaces between paragraphs or don't line-break at all please.

> Getting string representations of color ids is useful for drivers

"IDs"

> which are handling color ids anyways, for example for the multicolor API.
> 
> Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
> ---
>  drivers/leds/led-core.c |  9 +++++++++
>  include/linux/leds.h    | 10 ++++++++++
>  2 files changed, 19 insertions(+)
> 
> diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c
> index 89c9806cc97f..04a49958458e 100644
> --- a/drivers/leds/led-core.c
> +++ b/drivers/leds/led-core.c
> @@ -534,6 +534,15 @@ int led_compose_name(struct device *dev, struct led_init_data *init_data,
>  }
>  EXPORT_SYMBOL_GPL(led_compose_name);
>  
> +const char *led_color_name(u8 color_id)

led_get_color_name()

> +{
> +	if (color_id >= ARRAY_SIZE(led_colors))
> +		return NULL;
> +
> +	return led_colors[color_id];
> +}
> +EXPORT_SYMBOL_GPL(led_color_name);
> +
>  enum led_default_state led_init_default_state_get(struct fwnode_handle *fwnode)
>  {
>  	const char *state = NULL;
> diff --git a/include/linux/leds.h b/include/linux/leds.h
> index db6b114bb3d9..0f1b955fa3f7 100644
> --- a/include/linux/leds.h
> +++ b/include/linux/leds.h
> @@ -427,6 +427,16 @@ void led_sysfs_enable(struct led_classdev *led_cdev);
>  int led_compose_name(struct device *dev, struct led_init_data *init_data,
>  		     char *led_classdev_name);
>  
> +/**
> + * led_color_name - get string representation of color id
> + * @color_id: The LED_COLOR_ID_* constant
> + *
> + * Get the string name of a LED_COLOR_ID_* constant.
> + *
> + * Returns: A string constant or NULL on an invalid ID.
> + */
> +const char *led_color_name(u8 color_id);


>  /**
>   * led_sysfs_is_disabled - check if LED sysfs interface is disabled
>   * @led_cdev: the LED to query
> 
> -- 
> 2.45.1
> 
> 

-- 
Lee Jones [李琼斯]