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/*
* Copyright (c) 2022, sakumisu
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "usbh_core.h"
#include "usbh_hid.h"
#define DEV_FORMAT "/dev/input%d"
static uint32_t g_devinuse = 0;
USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_hid_buf[128];
static int usbh_hid_devno_alloc(struct usbh_hid *hid_class)
{
int devno;
for (devno = 0; devno < 32; devno++) {
uint32_t bitno = 1 << devno;
if ((g_devinuse & bitno) == 0) {
g_devinuse |= bitno;
hid_class->minor = devno;
return 0;
}
}
return -EMFILE;
}
static void usbh_hid_devno_free(struct usbh_hid *hid_class)
{
int devno = hid_class->minor;
if (devno >= 0 && devno < 32) {
g_devinuse &= ~(1 << devno);
}
}
static int usbh_hid_get_report_descriptor(struct usbh_hid *hid_class, uint8_t *buffer)
{
struct usb_setup_packet *setup = hid_class->hport->setup;
int ret;
setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_STANDARD | USB_REQUEST_RECIPIENT_INTERFACE;
setup->bRequest = USB_REQUEST_GET_DESCRIPTOR;
setup->wValue = HID_DESCRIPTOR_TYPE_HID_REPORT << 8;
setup->wIndex = hid_class->intf;
setup->wLength = 128;
ret = usbh_control_transfer(hid_class->hport->ep0, setup, g_hid_buf);
if (ret < 0) {
return ret;
}
memcpy(buffer, g_hid_buf, ret - 8);
return ret;
}
int usbh_hid_set_idle(struct usbh_hid *hid_class, uint8_t report_id, uint8_t duration)
{
struct usb_setup_packet *setup = hid_class->hport->setup;
setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
setup->bRequest = HID_REQUEST_SET_IDLE;
setup->wValue = (duration << 8) | report_id;
setup->wIndex = hid_class->intf;
setup->wLength = 0;
return usbh_control_transfer(hid_class->hport->ep0, setup, NULL);
}
int usbh_hid_get_idle(struct usbh_hid *hid_class, uint8_t *buffer)
{
struct usb_setup_packet *setup = hid_class->hport->setup;
int ret;
setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
setup->bRequest = HID_REQUEST_GET_IDLE;
setup->wValue = 0;
setup->wIndex = hid_class->intf;
setup->wLength = 1;
ret = usbh_control_transfer(hid_class->hport->ep0, setup, g_hid_buf);
if (ret < 0) {
return ret;
}
memcpy(buffer, g_hid_buf, 1);
return ret;
}
int usbh_hid_set_protocol(struct usbh_hid *hid_class, uint8_t protocol)
{
struct usb_setup_packet *setup = hid_class->hport->setup;
setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
setup->bRequest = HID_REQUEST_SET_PROTOCOL;
setup->wValue = protocol;
setup->wIndex = 0;
setup->wLength = 0;
return usbh_control_transfer(hid_class->hport->ep0, setup, NULL);
}
int usbh_hid_connect(struct usbh_hubport *hport, uint8_t intf)
{
struct usb_endpoint_descriptor *ep_desc;
int ret;
struct usbh_hid *hid_class = usb_malloc(sizeof(struct usbh_hid));
if (hid_class == NULL) {
USB_LOG_ERR("Fail to alloc hid_class\r\n");
return -ENOMEM;
}
memset(hid_class, 0, sizeof(struct usbh_hid));
usbh_hid_devno_alloc(hid_class);
hid_class->hport = hport;
hid_class->intf = intf;
hport->config.intf[intf].priv = hid_class;
// /* 0x0 = boot protocol, 0x1 = report protocol */
// ret = usbh_hid_set_protocol(hid_class, 0x1);
// if (ret < 0) {
// return ret;
// }
ret = usbh_hid_set_idle(hid_class, 0, 0);
if (ret < 0) {
USB_LOG_WRN("Do not support set idle\r\n");
}
ret = usbh_hid_get_report_descriptor(hid_class, hid_class->report_desc);
if (ret < 0) {
return ret;
}
for (uint8_t i = 0; i < hport->config.intf[intf].altsetting[0].intf_desc.bNumEndpoints; i++) {
ep_desc = &hport->config.intf[intf].altsetting[0].ep[i].ep_desc;
if (ep_desc->bEndpointAddress & 0x80) {
usbh_hport_activate_epx(&hid_class->intin, hport, ep_desc);
} else {
usbh_hport_activate_epx(&hid_class->intout, hport, ep_desc);
}
}
snprintf(hport->config.intf[intf].devname, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT, hid_class->minor);
USB_LOG_INFO("Register HID Class:%s\r\n", hport->config.intf[intf].devname);
usbh_hid_run(hid_class);
return ret;
}
int usbh_hid_disconnect(struct usbh_hubport *hport, uint8_t intf)
{
int ret = 0;
struct usbh_hid *hid_class = (struct usbh_hid *)hport->config.intf[intf].priv;
if (hid_class) {
usbh_hid_devno_free(hid_class);
if (hid_class->intin) {
usbh_pipe_free(hid_class->intin);
}
if (hid_class->intout) {
usbh_pipe_free(hid_class->intout);
}
usbh_hid_stop(hid_class);
memset(hid_class, 0, sizeof(struct usbh_hid));
usb_free(hid_class);
if (hport->config.intf[intf].devname[0] != '\0')
USB_LOG_INFO("Unregister HID Class:%s\r\n", hport->config.intf[intf].devname);
}
return ret;
}
__WEAK void usbh_hid_run(struct usbh_hid *hid_class)
{
}
__WEAK void usbh_hid_stop(struct usbh_hid *hid_class)
{
}
const struct usbh_class_driver hid_class_driver = {
.driver_name = "hid",
.connect = usbh_hid_connect,
.disconnect = usbh_hid_disconnect
};
CLASS_INFO_DEFINE const struct usbh_class_info hid_custom_class_info = {
.match_flags = USB_CLASS_MATCH_INTF_CLASS,
.class = USB_DEVICE_CLASS_HID,
.subclass = 0x00,
.protocol = 0x00,
.vid = 0x00,
.pid = 0x00,
.class_driver = &hid_class_driver
};
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