/****************************************************************************** * * Copyright (C) 2009-2012 Broadcom Corporation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ******************************************************************************/ #include #include #include #include #include #include #include #include #include #include #include #include "btcore/include/bdaddr.h" #include "osi/include/osi.h" #include "bta_api.h" #include "bta_hh_api.h" #include "bta_hh_co.h" #include "btif_hh.h" #include "btif_util.h" #include "btcore/include/bdaddr.h" #include "device/include/interop.h" const char *dev_path = "/dev/uhid"; #if (BLE_INCLUDED == TRUE && BTA_HH_LE_INCLUDED == TRUE) #include "btif_config.h" #define BTA_HH_NV_LOAD_MAX 16 static tBTA_HH_RPT_CACHE_ENTRY sReportCache[BTA_HH_NV_LOAD_MAX]; #endif #define REPORT_DESC_REPORT_ID 0x05 #define REPORT_DESC_DIGITIZER_PAGE 0x0D #define REPORT_DESC_START_COLLECTION 0xA1 #define REPORT_DESC_END_COLLECTION 0xC0 static void remove_digitizer_descriptor(UINT8 **data, UINT16 *length) { UINT8 *startDescPtr = *data; UINT8 *desc = *data; /* Parse until complete report descriptor is parsed */ while (startDescPtr < *data + *length) { UINT8 item = *startDescPtr++; UINT8 usage_page; switch (item) { case REPORT_DESC_REPORT_ID: // Report ID usage_page = *startDescPtr; if (usage_page == REPORT_DESC_DIGITIZER_PAGE) { // digitizer usage page UINT8 *traversePtr = startDescPtr; UINT8 num_of_collections = 0; UINT8 num_of_end_collections = 0; UINT16 remainingBytesToBeCopied = 0; /* increment pointer until digitizer descriptor is parsed * completely or start collection matches end collection */ while ((num_of_collections == 0 || (num_of_collections != num_of_end_collections)) && (traversePtr < *data + *length)) { if (*traversePtr == REPORT_DESC_START_COLLECTION) { /* Increment number of collections for * digitizer descriptor */ num_of_collections++; } if (*traversePtr == REPORT_DESC_END_COLLECTION) { /* Increment number of end collections for * digitizer descriptor */ num_of_end_collections++; } /* increment the pointer to continue parsing * the digitizer descriptor */ UNUSED(*traversePtr++); } remainingBytesToBeCopied = *length - (traversePtr - *data); BTIF_TRACE_DEBUG("starting point of digitizer desc = %d\n", (startDescPtr - *data) - 1); BTIF_TRACE_DEBUG("start collection = %d, end collection = " " %d\n", num_of_collections, num_of_end_collections); BTIF_TRACE_DEBUG("end point of digitizer desc = %d\n", (traversePtr - *data)); BTIF_TRACE_DEBUG("length of digitizer desc = %d\n", traversePtr - startDescPtr + 2); BTIF_TRACE_DEBUG("bytes remaining to be copied = %d\n", remainingBytesToBeCopied); if (remainingBytesToBeCopied) { UINT32 i; UINT8 *newDescPtr = traversePtr; UINT32 digDescStartPoint = (startDescPtr - *data) - 1; UINT32 digDescEndPoint = *length - (traversePtr - startDescPtr) - 1; /* copy the remaining bytes in descriptor to the * existing place of digitizer descriptor */ for (i = digDescStartPoint; i < digDescEndPoint; i ++) { desc[i] = *newDescPtr++; } } /* update the length as digitizer descriptor is removed */ *length = *length - (traversePtr - startDescPtr) - 1; BTIF_TRACE_DEBUG("new length of report desc = %d\n", *length); /* Update the start descriptor again to continue parsing * for digitizer records assuming more than 1 digitizer * record exists in report descriptor */ startDescPtr --; } break; default: startDescPtr += (item & 0x03); break; } } } void uhid_set_non_blocking(int fd) { int opts = fcntl(fd, F_GETFL); if (opts < 0) APPL_TRACE_ERROR("%s() Getting flags failed (%s)", __func__, strerror(errno)); opts |= O_NONBLOCK; if (fcntl(fd, F_SETFL, opts) < 0) APPL_TRACE_EVENT("%s() Setting non-blocking flag failed (%s)", __func__, strerror(errno)); } static void lst_free_cb (void * rpt_id) { UINT32 *p_rpt_id = (UINT32 *)rpt_id; if (rpt_id == NULL) return; APPL_TRACE_DEBUG("%s: freeing report id %d", __func__, (int)*p_rpt_id); free(rpt_id); rpt_id = NULL; } /*Internal function to perform UHID write and error checking*/ static int uhid_write(int fd, const struct uhid_event *ev) { ssize_t ret; OSI_NO_INTR(ret = write(fd, ev, sizeof(*ev))); if (ret < 0){ int rtn = -errno; APPL_TRACE_ERROR("%s: Cannot write to uhid:%s", __FUNCTION__, strerror(errno)); return rtn; } else if (ret != (ssize_t)sizeof(*ev)) { APPL_TRACE_ERROR("%s: Wrong size written to uhid: %zd != %zu", __FUNCTION__, ret, sizeof(*ev)); return -EFAULT; } return 0; } /* Internal function to parse the events received from UHID driver*/ static int uhid_read_event(btif_hh_device_t *p_dev) { assert(p_dev); struct uhid_event ev; memset(&ev, 0, sizeof(ev)); if(!p_dev) { APPL_TRACE_ERROR("%s: Device not found", __func__) return -1; } ssize_t ret; APPL_TRACE_DEBUG("%s: reading", __func__); OSI_NO_INTR(ret = read(p_dev->fd, &ev, sizeof(ev))); APPL_TRACE_DEBUG("%s: read %d bytes", __func__, ret); if (ret == 0) { APPL_TRACE_ERROR("%s: Read HUP on uhid-cdev %s", __func__, strerror(errno)); return -EFAULT; } else if (ret < 0) { APPL_TRACE_ERROR("%s: Cannot read uhid-cdev: %s", __func__, strerror(errno)); return -errno; } else if ((ev.type == UHID_OUTPUT) || (ev.type==UHID_OUTPUT_EV)) { // Only these two types havae payload, // ensure we read full event descriptor if (ret < (ssize_t)sizeof(ev)) { APPL_TRACE_ERROR("%s: Invalid size read from uhid-dev: %ld != %lu", __func__, ret, sizeof(ev.type)); return -EFAULT; } } APPL_TRACE_DEBUG("%s: received event = %d", __func__, ev.type); switch (ev.type) { case UHID_START: APPL_TRACE_DEBUG("UHID_START from uhid-dev\n"); p_dev->ready_for_data = TRUE; break; case UHID_STOP: APPL_TRACE_DEBUG("UHID_STOP from uhid-dev\n"); p_dev->ready_for_data = FALSE; break; case UHID_OPEN: APPL_TRACE_DEBUG("UHID_OPEN from uhid-dev\n"); p_dev->ready_for_data = TRUE; break; case UHID_CLOSE: APPL_TRACE_DEBUG("UHID_CLOSE from uhid-dev\n"); p_dev->ready_for_data = FALSE; break; case UHID_OUTPUT: if (ret < (ssize_t)(sizeof(ev.type) + sizeof(ev.u.output))) { APPL_TRACE_ERROR("%s: Invalid size read from uhid-dev: %zd < %zu", __func__, ret, sizeof(ev.type) + sizeof(ev.u.output)); return -EFAULT; } APPL_TRACE_DEBUG("UHID_OUTPUT: Report type = %d, report_size = %d" ,ev.u.output.rtype, ev.u.output.size); //Send SET_REPORT with feature report if the report type in output event is FEATURE if(ev.u.output.rtype == UHID_FEATURE_REPORT) btif_hh_setreport(p_dev, BTHH_FEATURE_REPORT, ev.u.output.size, ev.u.output.data); else if(ev.u.output.rtype == UHID_OUTPUT_REPORT) { if (ev.u.output.size == BTIF_HH_OUTPUT_REPORT_SIZE && !memcmp(&p_dev->last_output_rpt_data, &ev.u.output.data, BTIF_HH_OUTPUT_REPORT_SIZE)) { /* Last output report same as current output report, don't inform to remote * device as this could be the case when reports are being sent due to * device suspend/resume. If same output report is sent to remote device * device which uses UART as transport might not be able to suspend at all * leading to higher battery drain. */ APPL_TRACE_VERBOSE("UHID_OUTPUT: data same returning"); return 0; } /* Copy new output report data for future tracking */ memcpy(&p_dev->last_output_rpt_data, &ev.u.output.data, ev.u.output.size); btif_hh_setreport(p_dev, BTHH_OUTPUT_REPORT, ev.u.output.size, ev.u.output.data); } else btif_hh_setreport(p_dev, BTHH_INPUT_REPORT, ev.u.output.size, ev.u.output.data); break; case UHID_OUTPUT_EV: APPL_TRACE_DEBUG("UHID_OUTPUT_EV from uhid-dev\n"); break; case UHID_SET_REPORT: if (ret < (ssize_t)(sizeof(ev.type) + sizeof(ev.u.set_report))) { APPL_TRACE_ERROR("%s: UHID_SET_REPORT: Invalid size read from " "uhid-dev: %zd < %zu", __func__, ret, sizeof(ev.type) + sizeof(ev.u.set_report)); return -EFAULT; } APPL_TRACE_DEBUG("UHID_SET_REPORT: Report type = %d, report_size = %d" ,ev.u.set_report.rtype, ev.u.set_report.size); UINT32 *p_set_rpt_id = (UINT32 *)malloc(sizeof(UINT32)); if (!p_set_rpt_id) { APPL_TRACE_ERROR("%s unable to allocate p_set_rpt_id", __func__); return -ENOMEM; } *p_set_rpt_id = ev.u.set_report.id; if (p_dev->set_rpt_id_list) { if (!list_append(p_dev->set_rpt_id_list, (void *)p_set_rpt_id)) { APPL_TRACE_ERROR("%s: list_append failed", __func__) return -EFAULT; } } if (ev.u.set_report.rtype == UHID_FEATURE_REPORT) btif_hh_setreport(p_dev, BTHH_FEATURE_REPORT, ev.u.set_report.size, ev.u.set_report.data); else if (ev.u.set_report.rtype == UHID_OUTPUT_REPORT) btif_hh_setreport(p_dev, BTHH_OUTPUT_REPORT, ev.u.set_report.size, ev.u.set_report.data); else btif_hh_setreport(p_dev, BTHH_INPUT_REPORT, ev.u.set_report.size, ev.u.set_report.data); break; case UHID_GET_REPORT: if (ret < (ssize_t)(sizeof(ev.type) + sizeof(ev.u.get_report))) { APPL_TRACE_ERROR("%s: UHID_GET_REPORT: Invalid size read from " "uhid-dev: %zd < %zu", __func__, ret, sizeof(ev.type) + sizeof(ev.u.get_report)); return -EFAULT; } APPL_TRACE_DEBUG("UHID_GET_REPORT: Report type = %d", ev.u.get_report.rtype); p_dev->get_rpt_snt++; if (ev.u.get_report.rtype == UHID_FEATURE_REPORT) btif_hh_getreport(p_dev, BTHH_FEATURE_REPORT, ev.u.get_report.rnum, 0); else if (ev.u.get_report.rtype == UHID_OUTPUT_REPORT) btif_hh_getreport(p_dev, BTHH_OUTPUT_REPORT, ev.u.get_report.rnum, 0); else btif_hh_getreport(p_dev, BTHH_INPUT_REPORT, ev.u.get_report.rnum, 0); break; default: APPL_TRACE_DEBUG("Invalid event from uhid-dev: %u\n", ev.type); } return 0; } /******************************************************************************* ** ** Function create_thread ** ** Description creat a select loop ** ** Returns pthread_t ** *******************************************************************************/ static inline pthread_t create_thread(void *(*start_routine)(void *), void * arg){ APPL_TRACE_DEBUG("create_thread: entered"); pthread_attr_t thread_attr; pthread_attr_init(&thread_attr); pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_JOINABLE); pthread_t thread_id = -1; if ( pthread_create(&thread_id, &thread_attr, start_routine, arg)!=0 ) { APPL_TRACE_ERROR("pthread_create : %s", strerror(errno)); return -1; } APPL_TRACE_DEBUG("create_thread: thread created successfully"); return thread_id; } /******************************************************************************* ** ** Function btif_hh_poll_event_thread ** ** Description the polling thread which polls for event from UHID driver ** ** Returns void ** *******************************************************************************/ static void *btif_hh_poll_event_thread(void *arg) { btif_hh_device_t *p_dev = arg; APPL_TRACE_DEBUG("%s: Thread created fd = %d", __func__, p_dev->fd); struct pollfd pfds[1]; pfds[0].fd = p_dev->fd; pfds[0].events = POLLIN; // Set the uhid fd as non-blocking to ensure we never block the BTU thread uhid_set_non_blocking(p_dev->fd); while(p_dev->hh_keep_polling){ int ret; OSI_NO_INTR(ret = poll(pfds, 1, 50)); if (ret < 0) { APPL_TRACE_ERROR("%s: Cannot poll for fds: %s\n", __func__, strerror(errno)); break; } if (pfds[0].revents & POLLIN) { APPL_TRACE_DEBUG("%s: POLLIN", __func__); ret = uhid_read_event(p_dev); if (ret != 0) break; } } p_dev->hh_poll_thread_id = -1; return 0; } static inline void btif_hh_close_poll_thread(btif_hh_device_t *p_dev) { APPL_TRACE_DEBUG("%s", __FUNCTION__); p_dev->hh_keep_polling = 0; if(p_dev->hh_poll_thread_id > 0) pthread_join(p_dev->hh_poll_thread_id,NULL); return; } void bta_hh_co_destroy(int fd) { struct uhid_event ev; memset(&ev, 0, sizeof(ev)); ev.type = UHID_DESTROY; uhid_write(fd, &ev); APPL_TRACE_DEBUG("%s: Closing fd=%d", __func__, fd); close(fd); } int bta_hh_co_write(int fd, UINT8* rpt, UINT16 len) { APPL_TRACE_DEBUG("%s: UHID write %d", __func__, len); struct uhid_event ev; memset(&ev, 0, sizeof(ev)); ev.type = UHID_INPUT; ev.u.input.size = len; if(len > sizeof(ev.u.input.data)){ APPL_TRACE_WARNING("%s: Report size greater than allowed size", __FUNCTION__); return -1; } memcpy(ev.u.input.data, rpt, len); return uhid_write(fd, &ev); } /******************************************************************************* ** ** Function bta_hh_co_open ** ** Description When connection is opened, this call-out function is executed ** by HH to do platform specific initialization. ** ** Returns void. *******************************************************************************/ void bta_hh_co_open(UINT8 dev_handle, UINT8 sub_class, tBTA_HH_ATTR_MASK attr_mask, UINT8 app_id) { UINT32 i; btif_hh_device_t *p_dev = NULL; if (dev_handle == BTA_HH_INVALID_HANDLE) { APPL_TRACE_WARNING("%s: Oops, dev_handle (%d) is invalid...", __func__, dev_handle); return; } for (i = 0; i < BTIF_HH_MAX_HID; i++) { p_dev = &btif_hh_cb.devices[i]; if (p_dev->dev_status != BTHH_CONN_STATE_UNKNOWN && p_dev->dev_handle == dev_handle) { // We found a device with the same handle. Must be a device reconnected. APPL_TRACE_WARNING("%s: Found an existing device with the same handle " "dev_status = %d",__func__, p_dev->dev_status); APPL_TRACE_WARNING("%s: bd_addr = [%02X:%02X:%02X:%02X:%02X:]", __func__, p_dev->bd_addr.address[0], p_dev->bd_addr.address[1], p_dev->bd_addr.address[2], p_dev->bd_addr.address[3], p_dev->bd_addr.address[4]); APPL_TRACE_WARNING("%s: attr_mask = 0x%04x, sub_class = 0x%02x, app_id = %d", __func__, p_dev->attr_mask, p_dev->sub_class, p_dev->app_id); if(p_dev->fd<0) { p_dev->fd = open(dev_path, O_RDWR | O_CLOEXEC); if (p_dev->fd < 0){ APPL_TRACE_ERROR("%s: Error: failed to open uhid, err:%s", __func__,strerror(errno)); return; }else APPL_TRACE_DEBUG("%s: uhid fd = %d", __func__, p_dev->fd); } p_dev->hh_keep_polling = 1; p_dev->hh_poll_thread_id = create_thread(btif_hh_poll_event_thread, p_dev); break; } p_dev = NULL; } if (p_dev == NULL) { // Did not find a device reconnection case. Find an empty slot now. for (i = 0; i < BTIF_HH_MAX_HID; i++) { if (btif_hh_cb.devices[i].dev_status == BTHH_CONN_STATE_UNKNOWN) { p_dev = &btif_hh_cb.devices[i]; p_dev->dev_handle = dev_handle; p_dev->attr_mask = attr_mask; p_dev->sub_class = sub_class; p_dev->app_id = app_id; p_dev->local_vup = FALSE; btif_hh_cb.device_num++; // This is a new device,open the uhid driver now. p_dev->fd = open(dev_path, O_RDWR | O_CLOEXEC); if (p_dev->fd < 0){ APPL_TRACE_ERROR("%s: Error: failed to open uhid, err:%s", __func__,strerror(errno)); return; }else{ APPL_TRACE_DEBUG("%s: uhid fd = %d", __func__, p_dev->fd); p_dev->hh_keep_polling = 1; p_dev->hh_poll_thread_id = create_thread(btif_hh_poll_event_thread, p_dev); } break; } } } if (p_dev == NULL) { APPL_TRACE_ERROR("%s: Error: too many HID devices are connected", __func__); return; } p_dev->dev_status = BTHH_CONN_STATE_CONNECTED; APPL_TRACE_DEBUG("%s: allocating the set_rpt_id_list", __func__); memset(&p_dev->last_output_rpt_data, 0, BTIF_HH_OUTPUT_REPORT_SIZE); p_dev->set_rpt_id_list = list_new(lst_free_cb); if (!p_dev->set_rpt_id_list) { APPL_TRACE_ERROR("%s: unable to create list", __func__); } APPL_TRACE_DEBUG("%s: Return device status %d", __func__, p_dev->dev_status); } /******************************************************************************* ** ** Function bta_hh_co_close ** ** Description When connection is closed, this call-out function is executed ** by HH to do platform specific finalization. ** ** Parameters dev_handle - device handle ** app_id - application id ** ** Returns void. *******************************************************************************/ void bta_hh_co_close(UINT8 dev_handle, UINT8 app_id) { UINT32 i; btif_hh_device_t *p_dev = NULL; APPL_TRACE_WARNING("%s: dev_handle = %d, app_id = %d", __func__, dev_handle, app_id); if (dev_handle == BTA_HH_INVALID_HANDLE) { APPL_TRACE_WARNING("%s: Oops, dev_handle (%d) is invalid...", __func__, dev_handle); return; } for (i = 0; i < BTIF_HH_MAX_HID; i++) { p_dev = &btif_hh_cb.devices[i]; if (p_dev->set_rpt_id_list && list_length(p_dev->set_rpt_id_list)) { APPL_TRACE_DEBUG("%s: freeing the set_rpt_id_list", __func__); list_free(p_dev->set_rpt_id_list); p_dev->set_rpt_id_list = NULL; } if (p_dev->dev_status != BTHH_CONN_STATE_UNKNOWN && p_dev->dev_handle == dev_handle) { APPL_TRACE_WARNING("%s: Found an existing device with the same handle " "dev_status = %d, dev_handle =%d" ,__func__,p_dev->dev_status ,p_dev->dev_handle); memset(&p_dev->last_output_rpt_data, 0, BTIF_HH_OUTPUT_REPORT_SIZE); btif_hh_close_poll_thread(p_dev); break; } } } /******************************************************************************* ** ** Function bta_hh_co_data ** ** Description This function is executed by BTA when HID host receive a data ** report. ** ** Parameters dev_handle - device handle ** *p_rpt - pointer to the report data ** len - length of report data ** mode - Hid host Protocol Mode ** sub_clas - Device Subclass ** app_id - application id ** ** Returns void *******************************************************************************/ void bta_hh_co_data(UINT8 dev_handle, UINT8 *p_rpt, UINT16 len, tBTA_HH_PROTO_MODE mode, UINT8 sub_class, UINT8 ctry_code, BD_ADDR peer_addr, UINT8 app_id) { btif_hh_device_t *p_dev; UNUSED(peer_addr); APPL_TRACE_DEBUG("%s: dev_handle = %d, subclass = 0x%02X, mode = %d, " "ctry_code = %d, app_id = %d", __FUNCTION__, dev_handle, sub_class, mode, ctry_code, app_id); p_dev = btif_hh_find_connected_dev_by_handle(dev_handle); if (p_dev == NULL) { APPL_TRACE_WARNING("%s: Error: unknown HID device handle %d", __FUNCTION__, dev_handle); return; } // Send the HID data to the kernel. if ((p_dev->fd >= 0) && p_dev->ready_for_data) { bta_hh_co_write(p_dev->fd, p_rpt, len); }else { APPL_TRACE_WARNING("%s: Error: fd = %d, ready %d, len = %d", __FUNCTION__, p_dev->fd, p_dev->ready_for_data, len); } } /******************************************************************************* ** ** Function bta_hh_co_send_hid_info ** ** Description This function is called in btif_hh.c to process DSCP received. ** ** Parameters dev_handle - device handle ** dscp_len - report descriptor length ** *p_dscp - report descriptor ** ** Returns void *******************************************************************************/ void bta_hh_co_send_hid_info(btif_hh_device_t *p_dev, char *dev_name, UINT16 vendor_id, UINT16 product_id, UINT16 version, UINT8 ctry_code, int dscp_len, UINT8 *p_dscp) { int result; struct uhid_event ev; if (p_dev->fd < 0) { APPL_TRACE_WARNING("%s: Error: fd = %d, dscp_len = %d", __FUNCTION__, p_dev->fd, dscp_len); return; } APPL_TRACE_WARNING("%s: fd = %d, name = [%s], dscp_len = %d", __FUNCTION__, p_dev->fd, dev_name, dscp_len); APPL_TRACE_WARNING("%s: vendor_id = 0x%04x, product_id = 0x%04x, version= 0x%04x," "ctry_code=0x%02x",__FUNCTION__, vendor_id, product_id, version, ctry_code); if (interop_match_vendor_product_ids(INTEROP_REMOVE_HID_DIG_DESCRIPTOR, vendor_id, product_id) || interop_match_name(INTEROP_REMOVE_HID_DIG_DESCRIPTOR, dev_name)) remove_digitizer_descriptor(&p_dscp, (UINT16 *)&dscp_len); //Create and send hid descriptor to kernel memset(&ev, 0, sizeof(ev)); ev.type = UHID_CREATE; strncpy((char*)ev.u.create.name, dev_name, sizeof(ev.u.create.name) - 1); snprintf((char*)ev.u.create.uniq, sizeof(ev.u.create.uniq), "%2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X", p_dev->bd_addr.address[5], p_dev->bd_addr.address[4], p_dev->bd_addr.address[3], p_dev->bd_addr.address[2], p_dev->bd_addr.address[1], p_dev->bd_addr.address[0]); ev.u.create.rd_size = dscp_len; ev.u.create.rd_data = p_dscp; ev.u.create.bus = BUS_BLUETOOTH; ev.u.create.vendor = vendor_id; ev.u.create.product = product_id; ev.u.create.version = version; ev.u.create.country = ctry_code; // block write to uhid driver until create completes p_dev->ready_for_data = FALSE; result = uhid_write(p_dev->fd, &ev); // unblock write to uhid driver now p_dev->ready_for_data = TRUE; APPL_TRACE_WARNING("%s: wrote descriptor to fd = %d, dscp_len = %d, result = %d", __FUNCTION__, p_dev->fd, dscp_len, result); if (result) { APPL_TRACE_WARNING("%s: Error: failed to send DSCP, result = %d", __FUNCTION__, result); /* The HID report descriptor is corrupted. Close the driver. */ close(p_dev->fd); p_dev->fd = -1; } } /******************************************************************************* ** ** Function bta_hh_co_set_rpt_rsp ** ** Description This callout function is executed by HH when Set Report Response is received ** on Control Channel. ** ** Returns void. ** *******************************************************************************/ void bta_hh_co_set_rpt_rsp(UINT8 dev_handle, UINT8 status) { struct uhid_event ev; btif_hh_device_t *p_dev; APPL_TRACE_VERBOSE("%s: dev_handle = %d", __func__, dev_handle); p_dev = btif_hh_find_connected_dev_by_handle(dev_handle); if (p_dev == NULL) { APPL_TRACE_WARNING("%s: Error: unknown HID device handle %d", __func__, dev_handle); return; } // Send the HID report to the kernel. if (p_dev->fd >= 0 && p_dev->set_rpt_id_list && list_length(p_dev->set_rpt_id_list)) { memset(&ev, 0, sizeof(ev)); ev.type = UHID_SET_REPORT_REPLY; /* get the report id from start of list */ UINT32 *set_report_reply_id = list_front(p_dev->set_rpt_id_list); if (set_report_reply_id) { ev.u.set_report_reply.id = *set_report_reply_id; APPL_TRACE_VERBOSE("%s: set_report_reply_id = %d", __func__, *(set_report_reply_id)); /* remove the entry from list now */ if (!list_remove(p_dev->set_rpt_id_list, set_report_reply_id)) { APPL_TRACE_ERROR("%s: unable to remove set_report_reply_id = %d", __func__, *(set_report_reply_id)); } } ev.u.set_report_reply.err = status; uhid_write(p_dev->fd, &ev); } } /******************************************************************************* ** ** Function bta_hh_co_get_rpt_rsp ** ** Description This callout function is executed by HH when Get Report Response is received ** on Control Channel. ** ** Returns void. ** *******************************************************************************/ void bta_hh_co_get_rpt_rsp(UINT8 dev_handle, UINT8 status, UINT8 *p_rpt, UINT16 len) { struct uhid_event ev; btif_hh_device_t *p_dev; APPL_TRACE_VERBOSE("%s: dev_handle = %d", __func__, dev_handle); p_dev = btif_hh_find_connected_dev_by_handle(dev_handle); if (p_dev == NULL) { APPL_TRACE_WARNING("%s: Error: unknown HID device handle %d", __func__, dev_handle); return; } // Send the HID report to the kernel. if (p_dev->fd >= 0 && p_dev->get_rpt_snt--) { memset(&ev, 0, sizeof(ev)); ev.type = UHID_GET_REPORT_REPLY; ev.u.get_report_reply.err = status; ev.u.get_report_reply.size = len; if (len > 0) { if (len > UHID_DATA_MAX) { APPL_TRACE_WARNING("%s: Report size greater than allowed size", __func__); return; } memcpy(ev.u.get_report_reply.data, p_rpt, len); } uhid_write(p_dev->fd, &ev); } } #if (BLE_INCLUDED == TRUE && BTA_HH_LE_INCLUDED == TRUE) /******************************************************************************* ** ** Function bta_hh_le_co_rpt_info ** ** Description This callout function is to convey the report information on ** a HOGP device to the application. Application can save this ** information in NV if device is bonded and load it back when ** stack reboot. ** ** Parameters remote_bda - remote device address ** p_entry - report entry pointer ** app_id - application id ** ** Returns void. ** *******************************************************************************/ void bta_hh_le_co_rpt_info(BD_ADDR remote_bda, tBTA_HH_RPT_CACHE_ENTRY *p_entry, UINT8 app_id) { UNUSED(app_id); unsigned idx = 0; bdstr_t bdstr; sprintf(bdstr, "%02x:%02x:%02x:%02x:%02x:%02x", remote_bda[0], remote_bda[1], remote_bda[2], remote_bda[3], remote_bda[4], remote_bda[5]); size_t len = btif_config_get_bin_length(bdstr, "HidReport"); if (len >= sizeof(tBTA_HH_RPT_CACHE_ENTRY) && len <= sizeof(sReportCache)) { btif_config_get_bin(bdstr, "HidReport", (uint8_t *)sReportCache, &len); idx = len / sizeof(tBTA_HH_RPT_CACHE_ENTRY); } if (idx < BTA_HH_NV_LOAD_MAX) { memcpy(&sReportCache[idx++], p_entry, sizeof(tBTA_HH_RPT_CACHE_ENTRY)); btif_config_set_bin(bdstr, "HidReport", (const uint8_t *)sReportCache, idx * sizeof(tBTA_HH_RPT_CACHE_ENTRY)); BTIF_TRACE_DEBUG("%s() - Saving report; dev=%s, idx=%d", __FUNCTION__, bdstr, idx); } } /******************************************************************************* ** ** Function bta_hh_le_co_cache_load ** ** Description This callout function is to request the application to load the ** cached HOGP report if there is any. When cache reading is completed, ** bta_hh_le_ci_cache_load() is called by the application. ** ** Parameters remote_bda - remote device address ** p_num_rpt: number of cached report ** app_id - application id ** ** Returns the acched report array ** *******************************************************************************/ tBTA_HH_RPT_CACHE_ENTRY * bta_hh_le_co_cache_load (BD_ADDR remote_bda, UINT8 *p_num_rpt, UINT8 app_id) { UNUSED(app_id); bdstr_t bdstr; sprintf(bdstr, "%02x:%02x:%02x:%02x:%02x:%02x", remote_bda[0], remote_bda[1], remote_bda[2], remote_bda[3], remote_bda[4], remote_bda[5]); size_t len = btif_config_get_bin_length(bdstr, "HidReport"); if (!p_num_rpt || len < sizeof(tBTA_HH_RPT_CACHE_ENTRY)) return NULL; if (len > sizeof(sReportCache)) len = sizeof(sReportCache); btif_config_get_bin(bdstr, "HidReport", (uint8_t *)sReportCache, &len); *p_num_rpt = len / sizeof(tBTA_HH_RPT_CACHE_ENTRY); BTIF_TRACE_DEBUG("%s() - Loaded %d reports; dev=%s", __FUNCTION__, *p_num_rpt, bdstr); return sReportCache; } /******************************************************************************* ** ** Function bta_hh_le_co_reset_rpt_cache ** ** Description This callout function is to reset the HOGP device cache. ** ** Parameters remote_bda - remote device address ** ** Returns none ** *******************************************************************************/ void bta_hh_le_co_reset_rpt_cache (BD_ADDR remote_bda, UINT8 app_id) { UNUSED(app_id); bdstr_t bdstr; sprintf(bdstr, "%02x:%02x:%02x:%02x:%02x:%02x", remote_bda[0], remote_bda[1], remote_bda[2], remote_bda[3], remote_bda[4], remote_bda[5]); btif_config_remove(bdstr, "HidReport"); BTIF_TRACE_DEBUG("%s() - Reset cache for bda %s", __FUNCTION__, bdstr); } #endif /* #if (BLE_INCLUDED == TRUE && BTA_HH_LE_INCLUDED == TRUE) */