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/*
* Copyright (c) 2026, sakumisu
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "usbd_core.h"
#include "usbd_gs_usb.h"
#define GSUSB_ENDPOINT_IN 0x81
#define GSUSB_ENDPOINT_OUT 0x02
#define USBD_VID 0x1d50
#define USBD_PID 0x606f
#define USBD_MAX_POWER 100
#define USBD_LANGID_STRING 1033
#define USB_CONFIG_SIZE (9 + (9 + 7 + 7))
#define LINUX_USBD_GS_CAN_VENDOR_CODE 0x20
static const uint8_t linux_WCID_StringDescriptor_MSOS[18] = {
USB_MSOSV1_STRING_DESCRIPTOR_INIT(LINUX_USBD_GS_CAN_VENDOR_CODE)
};
static const uint8_t linux_WINUSB_WCIDDescriptor[] = {
/*
* WCID descriptor
*/
0x10 + 0x18, 0x00, 0x00, 0x00, /* dwLength */
0x00, 0x01, /* bcdVersion */
0x04, 0x00, /* wIndex */
0x01, /* bCount */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* bReserved_7 */
/*
* WCID function descriptor
*/
0x00, /* bFirstInterfaceNumber */
0x01, /* bReserved */
/* WINUSB */
'W', 'I', 'N', 'U', 'S', 'B', 0x00, 0x00, /* cCID_8 */
/* */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* cSubCID_8 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* bReserved_6 */
};
static const uint8_t linux_WINUSB_IF0_WCIDProperties[] = {
0x92, 0x00, 0x00, 0x00, /* length */
0x00, 0x01, /* version 1.0 */
0x05, 0x00, /* descr index (0x0005) */
0x01, 0x00, /* number of sections */
0x88, 0x00, 0x00, 0x00, /* property section size */
0x07, 0x00, 0x00, 0x00, /* property data type 7: Unicode REG_MULTI_SZ */
0x2a, 0x00, /* property name length */
0x44, 0x00, 0x65, 0x00, /* property name "DeviceInterfaceGUIDs" */
0x76, 0x00, 0x69, 0x00, 0x63, 0x00, 0x65, 0x00, 0x49, 0x00, 0x6e, 0x00, 0x74, 0x00, 0x65, 0x00, 0x72, 0x00, 0x66, 0x00, 0x61, 0x00, 0x63, 0x00, 0x65, 0x00,
0x47, 0x00, 0x55, 0x00, 0x49, 0x00, 0x44, 0x00, 0x73, 0x00, 0x00, 0x00,
0x50, 0x00, 0x00, 0x00, /* property data length */
0x7b, 0x00, 0x63, 0x00, /* property name: "{c15b4308-04d3-11e6-b3ea-6057189e6443}\0\0" */
0x31, 0x00, 0x35, 0x00, 0x62, 0x00, 0x34, 0x00, 0x33, 0x00, 0x30, 0x00, 0x38, 0x00, 0x2d, 0x00, 0x30, 0x00, 0x34, 0x00, 0x64, 0x00, 0x33, 0x00, 0x2d, 0x00,
0x31, 0x00, 0x31, 0x00, 0x65, 0x00, 0x36, 0x00, 0x2d, 0x00, 0x62, 0x00, 0x33, 0x00, 0x65, 0x00, 0x61, 0x00, 0x2d, 0x00, 0x36, 0x00, 0x30, 0x00, 0x35, 0x00,
0x37, 0x00, 0x31, 0x00, 0x38, 0x00, 0x39, 0x00, 0x65, 0x00, 0x36, 0x00, 0x34, 0x00, 0x34, 0x00, 0x33, 0x00, 0x7d, 0x00, 0x00, 0x00, 0x00, 0x00
};
const uint8_t *linux_WINUSB_IFx_WCIDProperties[] = {
linux_WINUSB_IF0_WCIDProperties,
};
struct usb_msosv1_descriptor linux_msosv1_desc = {
.string = linux_WCID_StringDescriptor_MSOS,
.vendor_code = LINUX_USBD_GS_CAN_VENDOR_CODE,
.compat_id = linux_WINUSB_WCIDDescriptor,
.comp_id_property = linux_WINUSB_IFx_WCIDProperties,
.comp_id_property_count = sizeof(linux_WINUSB_IFx_WCIDProperties) / sizeof(linux_WINUSB_IFx_WCIDProperties[0]),
};
static const uint8_t linux_device_descriptor[] = {
USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0000, 0x01),
};
static const uint8_t linux_config_descriptor_hs[] = {
USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x01, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
USB_INTERFACE_DESCRIPTOR_INIT(0x00, 0x00, 0x02, 0xff, 0xff, 0x00, 0x04),
USB_ENDPOINT_DESCRIPTOR_INIT(GSUSB_ENDPOINT_IN, USB_ENDPOINT_TYPE_BULK, USB_BULK_EP_MPS_HS, 0x00),
USB_ENDPOINT_DESCRIPTOR_INIT(GSUSB_ENDPOINT_OUT, USB_ENDPOINT_TYPE_BULK, USB_BULK_EP_MPS_HS, 0x00),
};
static const uint8_t linux_config_descriptor_fs[] = {
USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x01, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
USB_INTERFACE_DESCRIPTOR_INIT(0x00, 0x00, 0x02, 0xff, 0xff, 0x00, 0x04),
USB_ENDPOINT_DESCRIPTOR_INIT(GSUSB_ENDPOINT_IN, USB_ENDPOINT_TYPE_BULK, USB_BULK_EP_MPS_FS, 0x00),
USB_ENDPOINT_DESCRIPTOR_INIT(GSUSB_ENDPOINT_OUT, USB_ENDPOINT_TYPE_BULK, USB_BULK_EP_MPS_FS, 0x00),
};
static const uint8_t linux_device_quality_descriptor[] = {
USB_DEVICE_QUALIFIER_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, 0x01),
};
static const uint8_t linux_other_speed_config_descriptor_hs[] = {
USB_OTHER_SPEED_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 1, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
USB_INTERFACE_DESCRIPTOR_INIT(0x00, 0x00, 0x02, 0xff, 0xff, 0x00, 0x04),
USB_ENDPOINT_DESCRIPTOR_INIT(GSUSB_ENDPOINT_IN, USB_ENDPOINT_TYPE_BULK, USB_BULK_EP_MPS_FS, 0x00),
USB_ENDPOINT_DESCRIPTOR_INIT(GSUSB_ENDPOINT_OUT, USB_ENDPOINT_TYPE_BULK, USB_BULK_EP_MPS_FS, 0x00),
};
static const uint8_t linux_other_speed_config_descriptor_fs[] = {
USB_OTHER_SPEED_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 1, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
USB_INTERFACE_DESCRIPTOR_INIT(0x00, 0x00, 0x02, 0xff, 0xff, 0x00, 0x04),
USB_ENDPOINT_DESCRIPTOR_INIT(GSUSB_ENDPOINT_IN, USB_ENDPOINT_TYPE_BULK, USB_BULK_EP_MPS_HS, 0x00),
USB_ENDPOINT_DESCRIPTOR_INIT(GSUSB_ENDPOINT_OUT, USB_ENDPOINT_TYPE_BULK, USB_BULK_EP_MPS_HS, 0x00),
};
static const char *linux_string_descriptors[] = {
(const char[]){ 0x09, 0x04 }, /* Langid */
"HScanT", /* Manufacturer */
"HScanT USB to CAN adapter", /* Product */
"2024051701", /* Serial Number */
"HScanT GS can0", /* intf */
"HScanT GS can1", /* intf */
"HScanT GS can2", /* intf */
"HScanT GS can3", /* intf */
};
static const uint8_t *linux_device_descriptor_callback(uint8_t speed)
{
(void)speed;
return linux_device_descriptor;
}
static const uint8_t *linux_config_descriptor_callback(uint8_t speed)
{
if (speed == USB_SPEED_HIGH) {
return linux_config_descriptor_hs;
} else if (speed == USB_SPEED_FULL) {
return linux_config_descriptor_fs;
} else {
return NULL;
}
}
static const uint8_t *linux_device_quality_descriptor_callback(uint8_t speed)
{
(void)speed;
return linux_device_quality_descriptor;
}
static const uint8_t *linux_other_speed_config_descriptor_callback(uint8_t speed)
{
if (speed == USB_SPEED_HIGH) {
return linux_other_speed_config_descriptor_hs;
} else if (speed == USB_SPEED_FULL) {
return linux_other_speed_config_descriptor_fs;
} else {
return NULL;
}
}
static const char *linux_string_descriptor_callback(uint8_t speed, uint8_t index)
{
(void)speed;
if (index >= (sizeof(linux_string_descriptors) / sizeof(char *))) {
return NULL;
}
return linux_string_descriptors[index];
}
const struct usb_descriptor linux_gs_usb_descriptor = {
.device_descriptor_callback = linux_device_descriptor_callback,
.config_descriptor_callback = linux_config_descriptor_callback,
.device_quality_descriptor_callback = linux_device_quality_descriptor_callback,
.other_speed_descriptor_callback = linux_other_speed_config_descriptor_callback,
.string_descriptor_callback = linux_string_descriptor_callback,
.msosv1_descriptor = &linux_msosv1_desc,
};
static void usbd_event_handler(uint8_t busid, uint8_t event)
{
(void)busid;
switch (event) {
case USBD_EVENT_RESET:
break;
case USBD_EVENT_CONNECTED:
break;
case USBD_EVENT_DISCONNECTED:
break;
case USBD_EVENT_RESUME:
break;
case USBD_EVENT_SUSPEND:
break;
case USBD_EVENT_CONFIGURED:
break;
case USBD_EVENT_SET_REMOTE_WAKEUP:
break;
case USBD_EVENT_CLR_REMOTE_WAKEUP:
break;
default:
break;
}
}
void linux_gs_usb_winusb_out(uint8_t busid, uint8_t ep, uint32_t nbytes)
{
(void)busid;
}
void linux_gs_usb_winusb_in(uint8_t busid, uint8_t ep, uint32_t nbytes)
{
if ((nbytes % usbd_get_ep_mps(busid, ep)) == 0 && nbytes) {
/* send zlp */
usbd_ep_start_write(busid, ep, NULL, 0);
} else {
}
}
struct usbd_endpoint linux_gs_usb_out_ep = {
.ep_addr = GSUSB_ENDPOINT_OUT,
.ep_cb = linux_gs_usb_winusb_out
};
struct usbd_endpoint linux_gs_usb_in_ep = {
.ep_addr = GSUSB_ENDPOINT_IN,
.ep_cb = linux_gs_usb_winusb_in
};
struct usbd_interface linux_gs_usb_intf0;
void linux_gs_usb_init(uint8_t busid, uint32_t reg_base)
{
usbd_desc_register(busid, &linux_gs_usb_descriptor);
usbd_add_interface(busid, usbd_gs_can_init_intf(busid, &linux_gs_usb_intf0));
usbd_add_endpoint(busid, &linux_gs_usb_out_ep);
usbd_add_endpoint(busid, &linux_gs_usb_in_ep);
usbd_initialize(busid, reg_base, usbd_event_handler);
}
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