ZTE MF823 autoswitch

[Bjørn Mork]

Markus Gothe <nietzsche at lysator.liu.se> writes:

> This actually implies that all qualcomm-android-based devices will
> have this behviour as a default.

That's definitely not so. I've only tested on the Sierra Wireless EM7455
so far, and it doesn't even have the 0xee string descriptor.

I'm pretty sure the MBIM code is much the same, based on for example the
debug messages in the gadget function driver:

drivers/usb/gadget/f_mbim.c:1511 [g_android]mbim_func_suspend =_ "Got Function Suspend(%u) command for %s function\012"
/ # grep mbim /sys/kernel/debug/dynamic_debug/control 
drivers/usb/gadget/f_mbim.c:871 [g_android]mbim_ep0out_complete =_ "dev:%p\012"
drivers/usb/gadget/f_mbim.c:901 [g_android]mbim_ep0out_complete =_ "Set NTB INPUT SIZE %d\012"
drivers/usb/gadget/f_mbim.c:1772 [g_android]mbim_unbind =_ "unbinding mbim\012"
drivers/usb/gadget/f_mbim.c:1191 [g_android]mbim_ctrlrequest =_ "%02x.%02x v%04x i%04x l%u\012"
drivers/usb/gadget/f_mbim.c:993 [g_android]mbim_setup =_ "USB_CDC_RESET_FUNCTION\012"
drivers/usb/gadget/f_mbim.c:1002 [g_android]mbim_setup =_ "USB_CDC_SEND_ENCAPSULATED_COMMAND\012"
drivers/usb/gadget/f_mbim.c:1006 [g_android]mbim_setup =_ "w_length > req->length: %d > %d\012"
drivers/usb/gadget/f_mbim.c:1016 [g_android]mbim_setup =_ "USB_CDC_GET_ENCAPSULATED_RESPONSE\012"
drivers/usb/gadget/f_mbim.c:1025 [g_android]mbim_setup =_ "req%02x.%02x v%04x i%04x l%d\012"
drivers/usb/gadget/f_mbim.c:1044 [g_android]mbim_setup =_ "copied encapsulated_response %d bytes\012"
drivers/usb/gadget/f_mbim.c:1051 [g_android]mbim_setup =_ "USB_CDC_GET_NTB_PARAMETERS\012"
drivers/usb/gadget/f_mbim.c:1064 [g_android]mbim_setup =_ "USB_CDC_GET_NTB_INPUT_SIZE\012"
drivers/usb/gadget/f_mbim.c:1072 [g_android]mbim_setup =_ "Reply to host INPUT SIZE %d\012"
drivers/usb/gadget/f_mbim.c:1078 [g_android]mbim_setup =_ "USB_CDC_SET_NTB_INPUT_SIZE\012"
drivers/usb/gadget/f_mbim.c:1100 [g_android]mbim_setup =_ "USB_CDC_GET_NTB_FORMAT\012"
drivers/usb/gadget/f_mbim.c:1108 [g_android]mbim_setup =_ "NTB FORMAT: sending %d\012"
drivers/usb/gadget/f_mbim.c:1115 [g_android]mbim_setup =_ "USB_CDC_SET_NTB_FORMAT\012"
drivers/usb/gadget/f_mbim.c:1122 [g_android]mbim_setup =_ "NCM16 selected\012"
drivers/usb/gadget/f_mbim.c:1126 [g_android]mbim_setup =_ "NCM32 selected\012"
drivers/usb/gadget/f_mbim.c:1149 [g_android]mbim_setup =_ "control request: %02x.%02x v%04x i%04x l%d\012"
drivers/usb/gadget/f_mbim.c:703 [g_android]mbim_reset_function_queue =_ "Queue empty packet for QBI\012"
drivers/usb/gadget/f_mbim.c:718 [g_android]mbim_reset_function_queue =_ "%s: Wake up read queue\012"
drivers/usb/gadget/f_mbim.c:944 [g_android]fmbim_cmd_complete =_ "dev:%p port#%d\012"
drivers/usb/gadget/f_mbim.c:952 [g_android]fmbim_cmd_complete =_ "Add to cpkt_req_q packet with len = %d\012"
drivers/usb/gadget/f_mbim.c:961 [g_android]fmbim_cmd_complete =_ "Wake up read queue\012"
drivers/usb/gadget/f_mbim.c:2113 [g_android]mbim_ioctl =_ "Received command %d\012"
drivers/usb/gadget/f_mbim.c:1904 [g_android]mbim_read =_ "Enter(%zu)\012"
drivers/usb/gadget/f_mbim.c:1929 [g_android]mbim_read =_ "Requests list is empty. Wait.\012"
drivers/usb/gadget/f_mbim.c:1938 [g_android]mbim_read =_ "Received request packet\012"
drivers/usb/gadget/f_mbim.c:1952 [g_android]mbim_read =_ "cpkt size:%d\012"
drivers/usb/gadget/f_mbim.c:1963 [g_android]mbim_read =_ "copied %d bytes to user\012"
drivers/usb/gadget/f_mbim.c:1981 [g_android]mbim_write =_ "Enter(%zu)\012"
drivers/usb/gadget/f_mbim.c:2039 [g_android]mbim_write =_ "delay ep_queue: notifications queue is busy[%d]\012"
drivers/usb/gadget/f_mbim.c:2064 [g_android]mbim_write =_ "Exit(%zu)\012"
drivers/usb/gadget/f_mbim.c:757 [g_android]mbim_do_notify =_ "notify_state: %d\012"
drivers/usb/gadget/f_mbim.c:770 [g_android]mbim_do_notify =_ "No pending notifications\012"
drivers/usb/gadget/f_mbim.c:775 [g_android]mbim_do_notify =_ "Notification %02x sent\012"
drivers/usb/gadget/f_mbim.c:778 [g_android]mbim_do_notify =_ "notify_response_avaliable: done\012"
drivers/usb/gadget/f_mbim.c:815 [g_android]mbim_do_notify =_ "queue request: notify_count = %d\012"
drivers/usb/gadget/f_mbim.c:831 [g_android]mbim_notify_complete =_ "dev:%p\012"
drivers/usb/gadget/f_mbim.c:838 [g_android]mbim_notify_complete =_ "notify_count = %d\012"
drivers/usb/gadget/f_mbim.c:860 [g_android]mbim_notify_complete =_ "dev:%p Exit\012"
drivers/usb/gadget/f_mbim.c:1728 [g_android]mbim_bind =_ "MBIM in configuration %d\012"
drivers/usb/gadget/f_mbim.c:1881 [g_android]mbim_bind_config =_ "MBIM: dwNtbOutMaxSize:%d\012"
drivers/usb/gadget/android.c:1267 [g_android]mbim_function_bind_config =_ "%s: mbim transport is %s"
drivers/usb/gadget/f_mbim.c:1413 [g_android]mbim_disable =_ "MBIM data interface is not opened. Returning\012"
drivers/usb/gadget/f_mbim.c:1232 [g_android]mbim_set_alt =_ "intf=%u, alt=%u\012"
drivers/usb/gadget/f_mbim.c:1438 [g_android]mbim_suspend =_ "%s(): remote_wakeup:%d\012:"
drivers/usb/gadget/f_mbim.c:1454 [g_android]mbim_suspend =_ "MBIM data interface is not opened. Returning\012"
drivers/usb/gadget/f_mbim.c:1486 [g_android]mbim_resume =_ "MBIM data interface is not opened. Returning\012"
drivers/usb/gadget/f_mbim.c:1511 [g_android]mbim_func_suspend =_ "Got Function Suspend(%u) command for %s function\012"



Bjørn