linux-kernel - Re: [PATCH v7 2/6] leds: rgb: leds-ktd202x: I2C ID tables for KTD2026 and 2027

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Date: Mon, 29 Apr 2024 13:08:18 +0200
From: Hans de Goede <hdegoede@...hat.com>
To: Kate Hsuan <hpa@...hat.com>, Pavel Machek <pavel@....cz>,
 Lee Jones <lee@...nel.org>, linux-leds@...r.kernel.org,
 platform-driver-x86@...r.kernel.org,
 Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
 André Apitzsch <git@...tzsch.eu>,
 linux-kernel@...r.kernel.org, Andy Shevchenko <andy.shevchenko@...il.com>,
 Sebastian Reichel <sre@...nel.org>, linux-pm@...r.kernel.org
Subject: Re: [PATCH v7 2/6] leds: rgb: leds-ktd202x: I2C ID tables for KTD2026
 and 2027

Hi,

On 4/24/24 8:52 AM, Kate Hsuan wrote:

Maybe start the commit message with:

Add an i2c_device_id id_table to match manually instantiated
(non device-tree / ACPI instantiated) KTD202x controllers as
found on some x86 boards.

?

> This table shows the maximum support LED channel for KTD2026 and KTD-2027.
> The 3-channel LED controller KTD2026 controls R/G/B three LEDs. The
> 4-channel LED controller KTD2027 controls R/G/B and flashing LEDs.

Other then that this looks good to me:

Reviewed-by: Hans de Goede <hdegoede@...hat.com>

Regards,

Hans



> 
> Datasheet: https://www.kinet-ic.com/uploads/KTD2026-7-04h.pdf
> Signed-off-by: Kate Hsuan <hpa@...hat.com>
> ---
>  drivers/leds/rgb/leds-ktd202x.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/leds/rgb/leds-ktd202x.c b/drivers/leds/rgb/leds-ktd202x.c
> index f1c810c415a4..60ca6ec34336 100644
> --- a/drivers/leds/rgb/leds-ktd202x.c
> +++ b/drivers/leds/rgb/leds-ktd202x.c
> @@ -606,6 +606,13 @@ static void ktd202x_shutdown(struct i2c_client *client)
>  	regmap_write(chip->regmap, KTD202X_REG_RESET_CONTROL, KTD202X_RSTR_RESET);
>  }
>  
> +static const struct i2c_device_id ktd202x_id[] = {
> +	{"ktd2026", KTD2026_NUM_LEDS},
> +	{"ktd2027", KTD2027_NUM_LEDS},
> +	{}
> +};
> +MODULE_DEVICE_TABLE(i2c, ktd202x_id);
> +
>  static const struct of_device_id ktd202x_match_table[] = {
>  	{ .compatible = "kinetic,ktd2026", .data = (void *)KTD2026_NUM_LEDS },
>  	{ .compatible = "kinetic,ktd2027", .data = (void *)KTD2027_NUM_LEDS },
> @@ -621,6 +628,7 @@ static struct i2c_driver ktd202x_driver = {
>  	.probe = ktd202x_probe,
>  	.remove = ktd202x_remove,
>  	.shutdown = ktd202x_shutdown,
> +	.id_table = ktd202x_id,
>  };
>  module_i2c_driver(ktd202x_driver);
>