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