[PATCH] USB: add Compal EXM-G1x modem support

[PATCH] USB: add Compal EXM-G1x modem support

[Ian Lin]

Add the USB device ID for the Compal EXM-G1x modem.

Bind its QMI WWAN interface 8 and expose its vendor-specific serial
interfaces with protocols 0x30, 0x40, and 0x60 through the option driver.

Tested on a Compal EXM-G1x modem.

Signed-off-by: Ian Lin <jisayme@gmail.com>
---
 drivers/net/usb/qmi_wwan.c  | 1 +
 drivers/usb/serial/option.c | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
index 8178a8758..e17afb22c 100644
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -1451,6 +1451,7 @@ static const struct usb_device_id products[] = {
 	{QMI_FIXED_INTF(0x2692, 0x9025, 4)},    /* Cellient MPL200 (rebranded Qualcomm 05c6:9025) */
 	{QMI_QUIRK_SET_DTR(0x1546, 0x1312, 4)},	/* u-blox LARA-R6 01B */
 	{QMI_QUIRK_SET_DTR(0x1546, 0x1342, 4)},	/* u-blox LARA-L6 */
+	{QMI_QUIRK_SET_DTR(0x04b7, 0x8217, 8)},
 	{QMI_QUIRK_SET_DTR(0x33f8, 0x0104, 4)}, /* Rolling RW101 RMNET */
 	{QMI_FIXED_INTF(0x2dee, 0x4d22, 5)},    /* MeiG Smart SRM825L */
 	{QMI_QUIRK_SET_DTR(0x2dee, 0x4d63, 0)}, /* MeiG SRM813Q w/ Modem(PPP) */
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index e4ad14375..56b43bf1f 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -2547,6 +2547,9 @@ static const struct usb_device_id option_ids[] = {
 	{ USB_DEVICE_INTERFACE_CLASS(0x1bbb, 0x0640, 0xff),			/* TCL IK512 ECM */
 	  .driver_info = NCTRL(3) },
 	{ USB_DEVICE_INTERFACE_CLASS(0x2949, 0x8700, 0xff) },			/* Neoway N723-EA */
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x8217, 0xff, 0xff, 0x30) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x8217, 0xff, 0xff, 0x40) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x8217, 0xff, 0xff, 0x60) },
 	{ } /* Terminating entry */
 };
 MODULE_DEVICE_TABLE(usb, option_ids);
-- 
2.43.0

Re: [PATCH] USB: add Compal EXM-G1x modem support

[Johan Hovold]

On Fri, Aug 28, 2026 at 03:56:44PM +0800, Ian Lin wrote:
> Add the USB device ID for the Compal EXM-G1x modem.
> 
> Bind its QMI WWAN interface 8 and expose its vendor-specific serial
> interfaces with protocols 0x30, 0x40, and 0x60 through the option driver.
> 
> Tested on a Compal EXM-G1x modem.

Do you know which chipset this is based on?

> Signed-off-by: Ian Lin <jisayme@gmail.com>
> ---
>  drivers/net/usb/qmi_wwan.c  | 1 +
>  drivers/usb/serial/option.c | 3 +++

Please split this in two patches as this will go in through two
different subsystems.

Please also include the output of usb-devices (or lsusb -v) in the
commit message (at least for usb serial).

>  2 files changed, 4 insertions(+)
> 
> diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
> index 8178a8758..e17afb22c 100644
> --- a/drivers/net/usb/qmi_wwan.c
> +++ b/drivers/net/usb/qmi_wwan.c
> @@ -1451,6 +1451,7 @@ static const struct usb_device_id products[] = {
>  	{QMI_FIXED_INTF(0x2692, 0x9025, 4)},    /* Cellient MPL200 (rebranded Qualcomm 05c6:9025) */
>  	{QMI_QUIRK_SET_DTR(0x1546, 0x1312, 4)},	/* u-blox LARA-R6 01B */
>  	{QMI_QUIRK_SET_DTR(0x1546, 0x1342, 4)},	/* u-blox LARA-L6 */
> +	{QMI_QUIRK_SET_DTR(0x04b7, 0x8217, 8)},
>  	{QMI_QUIRK_SET_DTR(0x33f8, 0x0104, 4)}, /* Rolling RW101 RMNET */
>  	{QMI_FIXED_INTF(0x2dee, 0x4d22, 5)},    /* MeiG Smart SRM825L */
>  	{QMI_QUIRK_SET_DTR(0x2dee, 0x4d63, 0)}, /* MeiG SRM813Q w/ Modem(PPP) */
> diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
> index e4ad14375..56b43bf1f 100644
> --- a/drivers/usb/serial/option.c
> +++ b/drivers/usb/serial/option.c
> @@ -2547,6 +2547,9 @@ static const struct usb_device_id option_ids[] = {
>  	{ USB_DEVICE_INTERFACE_CLASS(0x1bbb, 0x0640, 0xff),			/* TCL IK512 ECM */
>  	  .driver_info = NCTRL(3) },
>  	{ USB_DEVICE_INTERFACE_CLASS(0x2949, 0x8700, 0xff) },			/* Neoway N723-EA */
> +	{ USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x8217, 0xff, 0xff, 0x30) },
> +	{ USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x8217, 0xff, 0xff, 0x40) },
> +	{ USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x8217, 0xff, 0xff, 0x60) },

Try to keep the entries sorted by VID/PID and add a comment with the
product name after the first new entry.

>  	{ } /* Terminating entry */
>  };
>  MODULE_DEVICE_TABLE(usb, option_ids);

Johan

[PATCH v2] net: usb: qmi_wwan: add Compal EXM-G1x support

[Ian Lin]

The Compal EXM-G1x is a Qualcomm SDX12-based LTE modem. Add support for
its QMI WWAN interface 8 using the DTR quirk.

Tested on a Compal EXM-G1x modem.

Signed-off-by: Ian Lin <jisayme@gmail.com>
---
Changes in v2:
- Split the QMI WWAN change into a standalone patch.
- Document the Qualcomm SDX12 chipset.
- Improve VID/PID ordering and add a product-name comment.

 drivers/net/usb/qmi_wwan.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
index 8178a8758..fdfdcf24d 100644
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -1446,6 +1446,7 @@ static const struct usb_device_id products[] = {
 	{QMI_QUIRK_SET_DTR(0x2c7c, 0x0316, 3)},	/* Quectel RG255C */
 	{QMI_QUIRK_SET_DTR(0x2cb7, 0x0104, 4)},	/* Fibocom NL678 series */
 	{QMI_QUIRK_SET_DTR(0x2cb7, 0x0112, 0)},	/* Fibocom FG132 */
+	{QMI_QUIRK_SET_DTR(0x04b7, 0x8217, 8)},	/* Compal EXM-G1x */
 	{QMI_FIXED_INTF(0x0489, 0xe0b4, 0)},	/* Foxconn T77W968 LTE */
 	{QMI_FIXED_INTF(0x0489, 0xe0b5, 0)},	/* Foxconn T77W968 LTE with eSIM support*/
 	{QMI_FIXED_INTF(0x2692, 0x9025, 4)},    /* Cellient MPL200 (rebranded Qualcomm 05c6:9025) */
-- 
2.43.0

[PATCH v2] USB: serial: option: add Compal EXM-G1x support

[Ian Lin]

The Compal EXM-G1x is a Qualcomm SDX12-based LTE modem. Add support for
its vendor-specific serial interfaces with protocols 0x30, 0x40, and
0x60.

Relevant output from usb-devices:

T:  Bus=04 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  4 Spd=5000 MxCh= 0
D:  Ver= 3.20 Cls=ef(misc ) Sub=02 Prot=01 MxPS= 9 #Cfgs=  1
P:  Vendor=04b7 ProdID=8217 Rev=05.04
S:  Manufacturer=COMPAL
S:  Product=EXM-G1x
C:  #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=896mA
I:  If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option
I:  If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=(none)
I:  If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=60 Driver=option
I:  If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
I:  If#= 4 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
I:  If#= 8 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=50 Driver=qmi_wwan

Tested on a Compal EXM-G1x modem.

Signed-off-by: Ian Lin <jisayme@gmail.com>
---
Changes in v2:
- Split the USB serial change into a standalone patch.
- Document the Qualcomm SDX12 chipset and include usb-devices output.
- Sort the VID/PID entries and add a product-name comment.

 drivers/usb/serial/option.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index e4ad14375..e4d9f2e70 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -2542,6 +2542,9 @@ static const struct usb_device_id option_ids[] = {
 	{ USB_DEVICE_AND_INTERFACE_INFO(UNISOC_VENDOR_ID, TOZED_PRODUCT_LT70C, 0xff, 0, 0) },
 	{ USB_DEVICE_AND_INTERFACE_INFO(UNISOC_VENDOR_ID, UNISOC_PRODUCT_UIS7720, 0xff, 0, 0) },
 	{ USB_DEVICE_AND_INTERFACE_INFO(UNISOC_VENDOR_ID, LUAT_PRODUCT_AIR720U, 0xff, 0, 0) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x8217, 0xff, 0xff, 0x30) },	/* Compal EXM-G1x */
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x8217, 0xff, 0xff, 0x40) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x8217, 0xff, 0xff, 0x60) },
 	{ USB_DEVICE_INTERFACE_CLASS(0x1bbb, 0x0530, 0xff),			/* TCL IK512 MBIM */
 	  .driver_info = NCTRL(1) },
 	{ USB_DEVICE_INTERFACE_CLASS(0x1bbb, 0x0640, 0xff),			/* TCL IK512 ECM */
-- 
2.43.0