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(59-124-157-10.hinet-ip.hinet.net. [59.124.157.10]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-8569fe78fc3sm350364b3a.24.2026.08.28.01.27.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 Aug 2026 01:27:06 -0700 (PDT) From: Ian Lin To: johan@kernel.org, gregkh@linuxfoundation.org Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Ian Lin Subject: [PATCH v2] USB: serial: option: add Compal EXM-G1x support Date: Fri, 28 Aug 2026 16:26:45 +0800 Message-ID: <20260828082645.13018-1-jisayme@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260828075644.6228-1-jisayme@gmail.com> References: <20260828075644.6228-1-jisayme@gmail.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 --- 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