Abacus Electrics makes optical probes for interacting with smart meters
over an optical interface.

At least one version uses an FT232B chip (as detected by ftdi_sio) with
a custom USB PID, which needs to be added to the list to make the device
work in a plug-and-play fashion.

Signed-off-by: Michael Ehrenreich <michideep@gmail.com>
---
 drivers/usb/serial/ftdi_sio.c     | 2 ++
 drivers/usb/serial/ftdi_sio_ids.h | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index e07c5e3eb..7bf46104e 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1079,6 +1079,8 @@ static const struct usb_device_id id_table_combined[] = {
 		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
 	/* GMC devices */
 	{ USB_DEVICE(GMC_VID, GMC_Z216C_PID) },
+	/* Abacus Electrics */
+	{ USB_DEVICE(FTDI_VID, ABACUS_OPTICAL_PROBE_PID) },
 	{ }					/* Terminating entry */
 };
 
diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
index 5ee60ba2a..5de8067be 100644
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -1612,3 +1612,8 @@
  */
 #define GMC_VID				0x1cd7
 #define GMC_Z216C_PID			0x0217 /* GMC Z216C Adapter IR-USB */
+
+/*
+ * Abacus Electrics
+ */
+#define ABACUS_OPTICAL_PROBE_PID	0xf458 /* ABACUS ELECTRICS Optical Probe */
-- 
2.48.1

On Mon, Mar 17, 2025 at 06:17:15AM +0100, Michael Ehrenreich wrote:
> Abacus Electrics makes optical probes for interacting with smart meters
> over an optical interface.
> 
> At least one version uses an FT232B chip (as detected by ftdi_sio) with
> a custom USB PID, which needs to be added to the list to make the device
> work in a plug-and-play fashion.
> 
> Signed-off-by: Michael Ehrenreich <michideep@gmail.com>

> diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
> index 5ee60ba2a..5de8067be 100644
> --- a/drivers/usb/serial/ftdi_sio_ids.h
> +++ b/drivers/usb/serial/ftdi_sio_ids.h
> @@ -1612,3 +1612,8 @@
>   */
>  #define GMC_VID				0x1cd7
>  #define GMC_Z216C_PID			0x0217 /* GMC Z216C Adapter IR-USB */
> +
> +/*
> + * Abacus Electrics
> + */
> +#define ABACUS_OPTICAL_PROBE_PID	0xf458 /* ABACUS ELECTRICS Optical Probe */

I moved this one to the FTDI VID section higher up.

Now applied, thanks.

Johan