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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2009 by Tomer Shalev
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "string.h"
#include "system.h"
#include "usb_core.h"
#include "usb_drv.h"
#include "kernel.h"
#include "usb_hid.h"
#include "usb_class_driver.h"
#define LOGF_ENABLE
#include "logf.h"
#ifdef USB_HID
#define CONCAT(low, high) ((high << 8) | low)
#define SIZE_VALUE 0x01
/* HID main items (HID1_11.pdf, page 38) */
#define INPUT (0x80 | SIZE_VALUE)
#define OUTPUT (0x90 | SIZE_VALUE)
#define FEATURE (0xb0 | SIZE_VALUE)
#define COLLECTION (0xa0 | SIZE_VALUE)
#define COLLECTION_APPLICATION CONCAT(COLLECTION, 0x01)
#define END_COLLECTION 0xc0
/* HID global items (HID1_11.pdf, page 45) */
#define USAGE_PAGE (0x04 | SIZE_VALUE)
#define LOGICAL_MINIMUM (0x14 | SIZE_VALUE)
#define LOGICAL_MAXIMUM (0x24 | SIZE_VALUE)
#define PHYSICAL_MINIMUM (0x34 | SIZE_VALUE)
#define PHYSICAL_MAXIMUM (0x44 | SIZE_VALUE)
#define UNIT_EXPONENT (0x54 | SIZE_VALUE)
#define UNIT (0x64 | SIZE_VALUE)
#define REPORT_SIZE (0x74 | SIZE_VALUE)
#define REPORT_ID (0x84 | SIZE_VALUE)
#define REPORT_COUNT (0x94 | SIZE_VALUE)
#define PUSH (0xa4 | SIZE_VALUE)
#define POP (0xb4 | SIZE_VALUE)
/* Hut1_12.pdf, Table 1, page 14 */
#define USAGE_PAGE_CONSUMER CONCAT(USAGE_PAGE, 0x0c)
/* Hut1_12.pdf, Table 17, page 77 */
#define CONSUMER_USAGE 0x09
#define CONSUMER_USAGE_CONTROL CONCAT(CONSUMER_USAGE, 0x01)
#define CONSUMER_USAGE_MUTE CONCAT(CONSUMER_USAGE, 0xe2)
#define CONSUMER_USAGE_VOLUME_INCREMENT CONCAT(CONSUMER_USAGE, 0xe9)
#define CONSUMER_USAGE_VOLUME_DECREMENT CONCAT(CONSUMER_USAGE, 0xea)
/* Hut1_12.pdf, Table 4, page 20 */
#define CONSUMER_CONTROL CONCAT(COLLECTION_APPLICATION, 0x01)
#define USB_DT_HID 0x21
#define USB_DT_REPORT 0x22
#define USB_DT_PHYSICAL_DESCRIPTOR 0x23
/* serial interface */
static struct usb_interface_descriptor __attribute__((aligned(2)))
interface_descriptor =
{
.bLength = sizeof(struct usb_interface_descriptor),
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 0,
.bAlternateSetting = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_CLASS_HID,
.bInterfaceSubClass = 0,
.bInterfaceProtocol = 0,
.iInterface = 0
};
/* USB_DT_HID: Endpoint descriptor */
struct usb_hid_descriptor {
uint8_t bLength;
uint8_t bDescriptorType;
uint16_t wBcdHID;
uint8_t bCountryCode;
uint8_t bNumDescriptors;
uint8_t bDescriptorType0;
uint16_t wDescriptorLength0;
} __attribute__ ((packed));
/* USB_DT_REPORT: Endpoint descriptor */
static struct usb_hid_descriptor __attribute__((aligned(2))) hid_descriptor =
{
.bLength = sizeof(struct usb_hid_descriptor),
.bDescriptorType = USB_DT_HID,
.wBcdHID = 0x0100,
.bCountryCode = 0,
.bNumDescriptors = 1,
.bDescriptorType0 = 0x22,
.wDescriptorLength0 = 0
};
static struct usb_endpoint_descriptor __attribute__((aligned(2))) endpoint_descriptor =
{
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = 0,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = 0,
.bInterval = 0
};
/* USB_DT_REPORT: Endpoint descriptor */
struct usb_report_descriptor {
uint16_t wUsagePage;
uint16_t wUsage;
uint16_t wCollection;
uint16_t wCollectionItems[12];
uint8_t wEndCollection;
} __attribute__ ((packed));
static struct usb_report_descriptor __attribute__((aligned(2))) report_descriptor =
{
.wUsagePage = USAGE_PAGE_CONSUMER,
.wUsage = CONSUMER_USAGE_CONTROL,
.wCollection = COLLECTION_APPLICATION,
.wCollectionItems = {
CONCAT(LOGICAL_MINIMUM, 0x0),
CONCAT(LOGICAL_MAXIMUM, 0x1),
USAGE_PAGE_CONSUMER,
CONSUMER_USAGE_MUTE,
CONSUMER_USAGE_VOLUME_INCREMENT,
CONSUMER_USAGE_VOLUME_DECREMENT,
CONCAT(REPORT_COUNT, 0x3),
CONCAT(REPORT_SIZE, 0x1),
CONCAT(INPUT, 0x42),
CONCAT(REPORT_COUNT, 0x5),
CONCAT(REPORT_SIZE, 0x1),
CONCAT(INPUT, 0x01)
},
.wEndCollection = END_COLLECTION
};
static int ep_in;
static int usb_interface;
int usb_hid_request_endpoints(struct usb_class_driver *drv)
{
ep_in = usb_core_request_endpoint(USB_DIR_IN, drv);
if (ep_in < 0)
return -1;
return 0;
}
int usb_hid_set_first_interface(int interface)
{
usb_interface = interface;
return interface + 1;
}
int usb_hid_get_config_descriptor(unsigned char *dest,int max_packet_size)
{
unsigned char *orig_dest = dest;
logf("hid: config desc.");
interface_descriptor.bInterfaceNumber = usb_interface;
PACK_DESCRIPTOR(dest, interface_descriptor);
hid_descriptor.wDescriptorLength0 = sizeof(report_descriptor);
PACK_DESCRIPTOR(dest, hid_descriptor);
/* Ignore max_packet_size and set to 1 bytes long packet size */
(void)max_packet_size;
endpoint_descriptor.wMaxPacketSize = 1;
endpoint_descriptor.bInterval = 8;
endpoint_descriptor.bEndpointAddress = ep_in;
PACK_DESCRIPTOR(dest, endpoint_descriptor);
return (dest - orig_dest);
}
void usb_hid_init_connection(void)
{
logf("hid: init connection");
}
/* called by usb_code_init() */
void usb_hid_init(void)
{
logf("hid: init");
}
void usb_hid_disconnect(void)
{
logf("hid: disconnect");
}
/* called by usb_core_transfer_complete() */
void usb_hid_transfer_complete(int ep,int dir, int status, int length)
{
(void)ep;
(void)dir;
(void)status;
(void)length;
logf("hid: transfer complete. ep %d, dir %d, status %d ,length %d",
ep, dir, status, length);
}
/* HID-only class specific requests */
#define USB_HID_GET_REPORT 0x01
#define USB_HID_GET_IDLE 0x02
#define USB_HID_GET_PROTOCOL 0x03
#define USB_HID_SET_REPORT 0x09
#define USB_HID_SET_IDLE 0x0a
#define USB_HID_SET_PROTOCOL 0x0b
/* called by usb_core_control_request() */
bool usb_hid_control_request(struct usb_ctrlrequest* req, unsigned char* dest)
{
bool handled = false;
switch(req->bRequestType & USB_TYPE_MASK) {
case USB_TYPE_STANDARD: {
switch(req->wValue>>8) { /* type */
case USB_DT_REPORT: {
logf("hid: report");
if (dest == NULL) {
logf("dest is NULL!");
}
if (dest) {
unsigned char *orig_dest = dest;
PACK_DESCRIPTOR(dest, report_descriptor);
if(usb_drv_send(EP_CONTROL, orig_dest, dest - orig_dest))
break;
usb_core_ack_control(req);
}
handled = true;
break;
}
default:
logf("hid: unsup. std. req");
break;
}
break;
}
case USB_TYPE_CLASS: {
switch (req->bRequest) {
case USB_HID_SET_IDLE:
logf("hid: set idle");
usb_core_ack_control(req);
handled = true;
break;
default:
//logf("hid: unsup. cls. req");
logf("%d: unsup. cls. req", req->bRequest);
break;
}
break;
}
case USB_TYPE_VENDOR:
logf("hid: unsup. ven. req");
break;
}
return handled;
}
void usb_hid_send(unsigned char *data, int length)
{
(void)data;
(void)(length);
logf("hid: send %d bytes: \"%s\"", length, data);
}
#endif /*USB_HID*/
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