Index: uspace/lib/usbhid/src/hidiface.c =================================================================== --- uspace/lib/usbhid/src/hidiface.c (revision 1e371cf2a341440320a92cfc947f054e893b44e3) +++ (revision ) @@ -1,239 +1,0 @@ -/* - * 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 libusbhid - * @{ - */ -/** @file - * Client functions for accessing USB HID interface (implementation). - */ - -#include -#include -#include -#include -#include -#include -#include - -/** Ask for event array length. - * - * @param dev_sess Session to DDF device providing USB HID interface. - * - * @return Number of usages returned or negative error code. - * - */ -int usbhid_dev_get_event_length(async_sess_t *dev_sess, size_t *size) -{ - if (!dev_sess) - return EINVAL; - - async_exch_t *exch = async_exchange_begin(dev_sess); - - sysarg_t len; - int rc = async_req_1_1(exch, DEV_IFACE_ID(USBHID_DEV_IFACE), - IPC_M_USBHID_GET_EVENT_LENGTH, &len); - - async_exchange_end(exch); - - if (rc == EOK) { - if (size != NULL) - *size = (size_t) len; - } - - return rc; -} - -/** Request for next event from HID device. - * - * @param[in] dev_sess Session 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(async_sess_t *dev_sess, uint8_t *buf, - size_t size, size_t *actual_size, int *event_nr, unsigned int flags) -{ - if (!dev_sess) - return EINVAL; - - if (buf == NULL) - return ENOMEM; - - if (size == 0) - return EINVAL; - - size_t buffer_size = size; - uint8_t *buffer = malloc(buffer_size); - if (buffer == NULL) - return ENOMEM; - - async_exch_t *exch = async_exchange_begin(dev_sess); - - ipc_call_t opening_request_call; - aid_t opening_request = async_send_2(exch, - DEV_IFACE_ID(USBHID_DEV_IFACE), IPC_M_USBHID_GET_EVENT, - flags, &opening_request_call); - - if (opening_request == 0) { - async_exchange_end(exch); - free(buffer); - return ENOMEM; - } - - ipc_call_t data_request_call; - aid_t data_request = async_data_read(exch, buffer, buffer_size, - &data_request_call); - - async_exchange_end(exch); - - if (data_request == 0) { - async_forget(opening_request); - 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 act_size = IPC_GET_ARG2(data_request_call); - - /* Copy the individual items. */ - memcpy(buf, buffer, act_size); - - if (actual_size != NULL) - *actual_size = act_size; - - if (event_nr != NULL) - *event_nr = IPC_GET_ARG1(opening_request_call); - - return EOK; -} - -int usbhid_dev_get_report_descriptor_length(async_sess_t *dev_sess, - size_t *size) -{ - if (!dev_sess) - return EINVAL; - - async_exch_t *exch = async_exchange_begin(dev_sess); - - sysarg_t arg_size; - int rc = async_req_1_1(exch, DEV_IFACE_ID(USBHID_DEV_IFACE), - IPC_M_USBHID_GET_REPORT_DESCRIPTOR_LENGTH, &arg_size); - - async_exchange_end(exch); - - if (rc == EOK) { - if (size != NULL) - *size = (size_t) arg_size; - } - - return rc; -} - -int usbhid_dev_get_report_descriptor(async_sess_t *dev_sess, uint8_t *buf, - size_t size, size_t *actual_size) -{ - if (!dev_sess) - return EINVAL; - - if (buf == NULL) - return ENOMEM; - - if (size == 0) - return EINVAL; - - async_exch_t *exch = async_exchange_begin(dev_sess); - - aid_t opening_request = async_send_1(exch, - DEV_IFACE_ID(USBHID_DEV_IFACE), IPC_M_USBHID_GET_REPORT_DESCRIPTOR, - NULL); - if (opening_request == 0) { - async_exchange_end(exch); - return ENOMEM; - } - - ipc_call_t data_request_call; - aid_t data_request = async_data_read(exch, buf, size, - &data_request_call); - - async_exchange_end(exch); - - if (data_request == 0) { - async_forget(opening_request); - 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 act_size = IPC_GET_ARG2(data_request_call); - - if (actual_size != NULL) - *actual_size = act_size; - - return EOK; -} - -/** - * @} - */