Re: [PATCH v6 3/3] USB: serial: option: add u-blox LARA-L6 modem

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On Wed, Nov 16, 2022 at 04:59:50PM +0100, Davide Tronchin wrote:
> Add LARA-L6 PIDs for three different USB compositions.
> 
> LARA-L6 module can be configured (by AT interface) in three different
> USB modes:
> * Default mode (Vendor ID: 0x1546 Product ID: 0x1341) with 4 serial
> interfaces
> * RmNet mode (Vendor ID: 0x1546 Product ID: 0x1342) with 4 serial
> interfaces and 1 RmNet virtual network interface
> * CDC-ECM mode (Vendor ID: 0x1546 Product ID: 0x1343) with 4 serial
> interface and 1 CDC-ECM virtual network interface
> 
> In default mode LARA-L6 exposes the following interfaces:
> If 0: Diagnostic
> If 1: AT parser
> If 2: AT parser
> If 3: AT parser/alternative functions
> 
> In RmNet mode LARA-L6 exposes the following interfaces:
> If 0: Diagnostic
> If 1: AT parser
> If 2: AT parser
> If 3: AT parset/alternative functions
> If 4: RMNET interface
> 
> In CDC-ECM mode LARA-L6 exposes the following interfaces:
> If 0: Diagnostic
> If 1: AT parser
> If 2: AT parser
> If 3: AT parset/alternative functions
> If 4: CDC-ECM interface
> 
> Signed-off-by: Davide Tronchin <davide.tronchin.94@xxxxxxxxx>
> ---
> 
> V5 -> V6: no changes.
> 
> V4 -> V5: kept PID 0x90fa to maintain the support for other products
> which use VID:PID 0x05c6:0x90fa. Remove interface 4 from blacklist
> for LARA-L6 default mode since it is not needed.
> 
> V3 -> V4: as requested, the patch has been split to 3 sub-patches.
> Fix comment format.
> 
> V2 -> V3: added this section to tracking changes with previous versions.
> Added some explanations about the RSVD(4) in the description session.
> Added reservation to port 4 of VID:PID 0x05C6:0x908B to meet other
> companies QMI net interface implementation.
> 
> V1 -> V2: define UBLOX_PRODUCT_LARA_R6 0x908b has been deleted together
> with the previosly provided definition of USB_DEVICE since the PID
> is used by another vendor.
> The LARA-L6 patch part is the same of the previosly provided one.
> 
>  drivers/usb/serial/option.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
> index 011b9a3b7571..f892a3c80cf1 100644
> --- a/drivers/usb/serial/option.c
> +++ b/drivers/usb/serial/option.c
> @@ -580,6 +580,11 @@ static void option_instat_callback(struct urb *urb);
>  #define OPPO_VENDOR_ID				0x22d9
>  #define OPPO_PRODUCT_R11			0x276c
>  
> +/* These u-blox products use u-blox's vendor ID */
> +#define UBLOX_VENDOR_ID				0x1546
> +#define UBLOX_PRODUCT_LARA_L6			0x1341
> +#define UBLOX_PRODUCT_LARA_L6_RMNET		0x1342
> +#define UBLOX_PRODUCT_LARA_L6_ECM		0x1343

I dropped the PID defines in favour of comments (like the one you added
in patch 2/3). I've been trying to move away from using defines as they
often end up adding twice as many lines to the file for every entry.

The result is here:

	https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial.git/log/?h=usb-linus

Thanks for sticking with it!

Johan



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