[PATCH v5 3/3] USB: serial: option: add u-blox LARA-L6 modem

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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>
---

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
 
 /* Device flags */
 
@@ -1127,6 +1132,12 @@ static const struct usb_device_id option_ids[] = {
 	  .driver_info = RSVD(3) },
 	{ USB_DEVICE(QUALCOMM_VENDOR_ID, 0x908b), /* u-blox LARA-R6 00B */
 	  .driver_info = RSVD(4) },
+	/* u-blox products using u-blox vendor ID */
+	{ USB_DEVICE(UBLOX_VENDOR_ID, UBLOX_PRODUCT_LARA_L6) },
+	{ USB_DEVICE(UBLOX_VENDOR_ID, UBLOX_PRODUCT_LARA_L6_RMNET),
+	  .driver_info = RSVD(4) },
+	{ USB_DEVICE(UBLOX_VENDOR_ID, UBLOX_PRODUCT_LARA_L6_ECM),
+	  .driver_info = RSVD(4) },
 	/* Quectel products using Quectel vendor ID */
 	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC21, 0xff, 0xff, 0xff),
 	  .driver_info = NUMEP2 },
-- 
2.34.1




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