Hi Eddie,
add functions to set and get usb interface descriptor, so people can customize usb interface descriptor
The f_mass_storage USB function is used through the g_dnl code:
./drivers/usb/gadget/g_dnl.c
Other gadget functions - like dfu and thor are using it.
Please consider following this scheme - for example look into the Samsung's Thor protocol support at:
./drivers/usb/gadget/f_thor.c
Since we managed to add Thor (vendor specific protocol), then it should be doable to add rockusb as well.
Another good example of this framework reuse is f_fastboot.c to support Android fastboot protocol.
Please consider if rockchip could be added in the same manner.
Signed-off-by: Eddie Cai eddie.cai.linux@gmail.com
drivers/usb/gadget/f_mass_storage.c | 18 ++++++++++++++++++ include/f_mass_storage.h | 2 ++ 2 files changed, 20 insertions(+)
diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index faf875e..333f069 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -2870,6 +2870,24 @@ static int fsg_bind_config(struct usb_composite_dev *cdev, return rc; }
+struct usb_interface_descriptor *fsg_get_usb_interface_descriptor(void) +{
To adjust the usb descriptor one can use:
g_dnl_bind_fixup() function (defined at g_dnl.c).
It is used to adjust information added to USB file descriptor - e.g. board/samsung/common/gadget.c or board/siemens/common/factoryreset.c
- return &fsg_intf_desc;
+}
+void fsg_set_usb_interface_descriptor(struct usb_interface_descriptor *desc) +{
- if (desc) {
fsg_intf_desc.bLength = desc->bLength;fsg_intf_desc.bDescriptorType =desc->bDescriptorType;
fsg_intf_desc.bNumEndpoints = desc->bNumEndpoints;fsg_intf_desc.bInterfaceClass =desc->bInterfaceClass;
fsg_intf_desc.bInterfaceSubClass =desc->bInterfaceSubClass;
fsg_intf_desc.bInterfaceProtocol =desc->bInterfaceProtocol;
fsg_intf_desc.iInterface = desc->iInterface;- }
+}
int fsg_add(struct usb_configuration *c) { struct fsg_common *fsg_common; diff --git a/include/f_mass_storage.h b/include/f_mass_storage.h index df6ea33..0cf29df 100644 --- a/include/f_mass_storage.h +++ b/include/f_mass_storage.h @@ -500,6 +500,8 @@ struct fsg_dev { struct usb_ep *bulk_out; };
+struct usb_interface_descriptor *fsg_get_usb_interface_descriptor(void); +void fsg_set_usb_interface_descriptor(struct usb_interface_descriptor *desc); int sleep_thread(struct fsg_common *common); int do_scsi_command(struct fsg_common *common);
Best regards,
Lukasz Majewski
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