linux-kernel - Re: [PATCH 3/6] usb: misc: onboard_usb_hub: add Genesys Logic GL850G hub support

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Message-ID: <Y4T3ju7FTb6994HT@google.com>
Date:   Mon, 28 Nov 2022 18:01:50 +0000
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Icenowy Zheng <uwu@...nowy.me>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andre Przywara <andre.przywara@....com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org
Subject: Re: [PATCH 3/6] usb: misc: onboard_usb_hub: add Genesys Logic GL850G
 hub support

On Sun, Nov 27, 2022 at 03:31:37PM +0800, Icenowy Zheng wrote:
> This is a 4-port USB 2.0 STT hub.

The commit message is supposed the describe the change, which
is almost certainly not a 4-port USB 2.0 STT hub :)

It could be something like "Add support for the Genesys Logic
GL850G, which is a 4-port USB 2.0 STT hub."

> 
> Signed-off-by: Icenowy Zheng <uwu@...nowy.me>
> ---
>  drivers/usb/misc/onboard_usb_hub.c | 2 ++
>  drivers/usb/misc/onboard_usb_hub.h | 5 +++++
>  2 files changed, 7 insertions(+)
> 
> diff --git a/drivers/usb/misc/onboard_usb_hub.c b/drivers/usb/misc/onboard_usb_hub.c
> index d63c63942af1..f5c71d724be6 100644
> --- a/drivers/usb/misc/onboard_usb_hub.c
> +++ b/drivers/usb/misc/onboard_usb_hub.c
> @@ -334,6 +334,7 @@ static struct platform_driver onboard_hub_driver = {
>  #define VENDOR_ID_MICROCHIP	0x0424
>  #define VENDOR_ID_REALTEK	0x0bda
>  #define VENDOR_ID_TI		0x0451
> +#define VENDOR_ID_GENESYS	0x05e3

Please insert the new entry in alphabetical order, i.e. before
VENDOR_ID_MICROCHIP.

>  
>  /*
>   * Returns the onboard_hub platform device that is associated with the USB
> @@ -414,6 +415,7 @@ static const struct usb_device_id onboard_hub_id_table[] = {
>  	{ USB_DEVICE(VENDOR_ID_REALTEK, 0x5414) }, /* RTS5414 USB 2.1 */
>  	{ USB_DEVICE(VENDOR_ID_TI, 0x8140) }, /* TI USB8041 3.0 */
>  	{ USB_DEVICE(VENDOR_ID_TI, 0x8142) }, /* TI USB8041 2.0 */
> +	{ USB_DEVICE(VENDOR_ID_GENESYS, 0x0608) }, /* Genesys Logic GL850G USB 2.0 */

Same here, the table is ordered alphabetically

>  	{}
>  };
>  MODULE_DEVICE_TABLE(usb, onboard_hub_id_table);
> diff --git a/drivers/usb/misc/onboard_usb_hub.h b/drivers/usb/misc/onboard_usb_hub.h
> index 34beab8bce3d..1ca188713b1f 100644
> --- a/drivers/usb/misc/onboard_usb_hub.h
> +++ b/drivers/usb/misc/onboard_usb_hub.h
> @@ -22,6 +22,10 @@ static const struct onboard_hub_pdata ti_tusb8041_data = {
>  	.reset_us = 3000,
>  };
>  
> +static const struct onboard_hub_pdata genesys_gl850g_data = {
> +	.reset_us = 3,
> +};
> +
>  static const struct of_device_id onboard_hub_match[] = {
>  	{ .compatible = "usb424,2514", .data = &microchip_usb424_data, },
>  	{ .compatible = "usb451,8140", .data = &ti_tusb8041_data, },
> @@ -30,6 +34,7 @@ static const struct of_device_id onboard_hub_match[] = {
>  	{ .compatible = "usbbda,5411", .data = &realtek_rts5411_data, },
>  	{ .compatible = "usbbda,414", .data = &realtek_rts5411_data, },
>  	{ .compatible = "usbbda,5414", .data = &realtek_rts5411_data, },
> +	{ .compatible = "usb5e3,608", .data = &genesys_gl850g_data, },

These table is ordered by compatible string, the new entry should be
inserted after "usb451,8142".

Thanks

m.