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[2001:8b0:fb11:2681:3a:2914:b727:547a]) by smtp.googlemail.com with ESMTPSA id g5sm14066000wru.48.2021.12.26.17.24.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 Dec 2021 17:24:14 -0800 (PST) From: Peter Robinson To: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Peter Robinson , Johan Hovold Subject: [RFC PATCH] gnss: usb: add support for U-Blox NEO-M9N Date: Mon, 27 Dec 2021 01:23:57 +0000 Message-Id: <20211227012357.788966-1-pbrobinson@gmail.com> X-Mailer: git-send-email 2.33.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Add support for the USB interface of the SparkFun NEO-M9N GPS Breakout receiver. Bus 001 Device 005: ID 1546:01a9 U-Blox AG u-blox GNSS receiver Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 2 Communications bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x1546 U-Blox AG idProduct 0x01a9 bcdDevice 4.04 iManufacturer 1 u-blox AG - www.u-blox.com iProduct 2 u-blox GNSS receiver iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 0x003e bNumInterfaces 2 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xc0 Self Powered MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 2 Communications bInterfaceSubClass 2 Abstract (modem) bInterfaceProtocol 1 AT-commands (v.25ter) iInterface 0 CDC Header: bcdCDC 1.10 CDC ACM: bmCapabilities 0x02 line coding and serial state CDC Call Management: bmCapabilities 0x03 call management use DataInterface bDataInterface 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 255 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 10 CDC Data bInterfaceSubClass 0 bInterfaceProtocol 255 Vendor specific iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x01 EP 1 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 0 Device Status: 0x0001 Self Powered Signed-off-by: Peter Robinson Cc: Johan Hovold --- Hi Johan, I've tested your GNSS USB series with a pair of U-Blox devices, adding the above USB ID. Only one included here for feedback to guage your thoughts. By defauly The U-Blox devices enumerate with the CDC ACM driver and output NMEA data via /dev/ttyACM0. With this patch and cdc_acm blocked I get /dev/gnss0 and can cat it to get NMEA data. Is your expectation to move these sort of devices over to the usb gnss driver too? Peter drivers/gnss/usb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gnss/usb.c b/drivers/gnss/usb.c index 792235a688ea..775d58c2dbe1 100644 --- a/drivers/gnss/usb.c +++ b/drivers/gnss/usb.c @@ -18,6 +18,7 @@ static const struct usb_device_id gnss_usb_id_table[] = { { USB_DEVICE(0x1199, 0xb000) }, /* Sierra Wireless XM1210 */ + { USB_DEVICE(0x1546, 0x01a9) }, /* U-Blox NEO-M9N GNSS receiver */ { } }; MODULE_DEVICE_TABLE(usb, gnss_usb_id_table);