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