Index: uspace/lib/usb/Makefile =================================================================== --- uspace/lib/usb/Makefile (revision d7f08b0d09bf493daacb7481ca175313fec7cb30) +++ uspace/lib/usb/Makefile (revision 27b85d9ebdc66e9e29d0e2194cb70e62a1180a40) @@ -42,4 +42,5 @@ src/dp.c \ src/dump.c \ + src/hidiface.c \ src/hidparser.c \ src/hub.c \ Index: uspace/lib/usb/include/usb/classes/hid/iface.h =================================================================== --- uspace/lib/usb/include/usb/classes/hid/iface.h (revision 27b85d9ebdc66e9e29d0e2194cb70e62a1180a40) +++ uspace/lib/usb/include/usb/classes/hid/iface.h (revision 27b85d9ebdc66e9e29d0e2194cb70e62a1180a40) @@ -0,0 +1,47 @@ +/* + * Copyright (c) 2011 Vojtech Horky + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** @addtogroup libusb + * @{ + */ +/** @file + * Client functions for accessing USB HID interface. + */ +#ifndef LIBUSB_CLASSES_HID_IFACE_H_ +#define LIBUSB_CLASSES_HID_IFACE_H_ + +#include + +int usbhid_dev_get_event_length(int); +int usbhid_dev_get_event(int, uint16_t *, uint16_t *, size_t, size_t *, + unsigned int); + +#endif +/** + * @} + */ Index: uspace/lib/usb/src/hidiface.c =================================================================== --- uspace/lib/usb/src/hidiface.c (revision 27b85d9ebdc66e9e29d0e2194cb70e62a1180a40) +++ uspace/lib/usb/src/hidiface.c (revision 27b85d9ebdc66e9e29d0e2194cb70e62a1180a40) @@ -0,0 +1,146 @@ +/* + * Copyright (c) 2011 Vojtech Horky + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** @addtogroup libusb + * @{ + */ +/** @file + * Client functions for accessing USB HID interface (implementation). + */ +#include +#include +#include +#include +#include +#include +#include + +/** Ask for event array length. + * + * @param dev_phone Opened phone to DDF device providing USB HID interface. + * @return Number of usages returned or negative error code. + */ +int usbhid_dev_get_event_length(int dev_phone) +{ + if (dev_phone < 0) { + return EINVAL; + } + + sysarg_t len; + int rc = async_req_1_1(dev_phone, DEV_IFACE_ID(USBHID_DEV_IFACE), + IPC_M_USBHID_GET_EVENT_LENGTH, &len); + if (rc == EOK) { + return (int) len; + } else { + return rc; + } +} + +/** Request for next event from HID device. + * + * @param[in] dev_phone Opened phone to DDF device providing USB HID interface. + * @param[out] usage_pages Where to store usage pages. + * @param[out] usages Where to store usages (actual data). + * @param[in] usage_count Length of @p usage_pages and @p usages buffer + * (in items, not bytes). + * @param[out] actual_usage_count Number of usages actually returned by the + * device driver. + * @param[in] flags Flags (see USBHID_IFACE_FLAG_*). + * @return Error code. + */ +int usbhid_dev_get_event(int dev_phone, uint16_t *usage_pages, uint16_t *usages, + size_t usage_count, size_t *actual_usage_count, unsigned int flags) +{ + if (dev_phone < 0) { + return EINVAL; + } + if ((usage_pages == NULL) || (usages == NULL)) { + return ENOMEM; + } + if (usage_count == 0) { + return EINVAL; + } + + size_t buffer_size = sizeof(uint16_t) * usage_count * 2; + uint16_t *buffer = malloc(buffer_size); + if (buffer == NULL) { + return ENOMEM; + } + + aid_t opening_request = async_send_2(dev_phone, + DEV_IFACE_ID(USBHID_DEV_IFACE), IPC_M_USBHID_GET_EVENT, + flags, NULL); + if (opening_request == 0) { + free(buffer); + return ENOMEM; + } + + ipc_call_t data_request_call; + aid_t data_request = async_data_read(dev_phone, buffer, buffer_size, + &data_request_call); + if (data_request == 0) { + async_wait_for(opening_request, NULL); + free(buffer); + return ENOMEM; + } + + sysarg_t data_request_rc; + sysarg_t opening_request_rc; + async_wait_for(data_request, &data_request_rc); + async_wait_for(opening_request, &opening_request_rc); + + if (data_request_rc != EOK) { + /* Prefer return code of the opening request. */ + if (opening_request_rc != EOK) { + return (int) opening_request_rc; + } else { + return (int) data_request_rc; + } + } + + if (opening_request_rc != EOK) { + return (int) opening_request_rc; + } + + size_t actual_size = IPC_GET_ARG2(data_request_call); + size_t items = actual_size / 2; + + /* Copy the individual items. */ + memcpy(usage_pages, buffer, items * sizeof(uint16_t)); + memcpy(usages, buffer + items, items * sizeof(uint16_t)); + + if (actual_usage_count != NULL) { + *actual_usage_count = items; + } + + return EOK; +} + +/** + * @} + */