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724 lines
25 KiB
724 lines
25 KiB
/******************************************************************************
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*
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* Copyright 2009-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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#include <base/logging.h>
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <linux/uhid.h>
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#include <pthread.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/poll.h>
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#include <unistd.h>
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#include "bta_api.h"
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#include "bta_hh_api.h"
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#include "bta_hh_co.h"
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#include "btif_hh.h"
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#include "btif_util.h"
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#include "osi/include/osi.h"
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const char* dev_path = "/dev/uhid";
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#include "btif_config.h"
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#define BTA_HH_NV_LOAD_MAX 16
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static tBTA_HH_RPT_CACHE_ENTRY sReportCache[BTA_HH_NV_LOAD_MAX];
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#define GET_RPT_RSP_OFFSET 9
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#define BTA_HH_CACHE_REPORT_VERSION 1
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#define THREAD_NORMAL_PRIORITY 0
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#define BT_HH_THREAD "bt_hh_thread"
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void uhid_set_non_blocking(int fd) {
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int opts = fcntl(fd, F_GETFL);
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if (opts < 0)
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APPL_TRACE_ERROR("%s() Getting flags failed (%s)", __func__,
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strerror(errno));
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opts |= O_NONBLOCK;
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if (fcntl(fd, F_SETFL, opts) < 0)
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APPL_TRACE_EVENT("%s() Setting non-blocking flag failed (%s)", __func__,
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strerror(errno));
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}
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/*Internal function to perform UHID write and error checking*/
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static int uhid_write(int fd, const struct uhid_event* ev) {
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ssize_t ret;
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OSI_NO_INTR(ret = write(fd, ev, sizeof(*ev)));
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if (ret < 0) {
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int rtn = -errno;
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APPL_TRACE_ERROR("%s: Cannot write to uhid:%s", __func__, strerror(errno));
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return rtn;
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} else if (ret != (ssize_t)sizeof(*ev)) {
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APPL_TRACE_ERROR("%s: Wrong size written to uhid: %zd != %zu", __func__,
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ret, sizeof(*ev));
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return -EFAULT;
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}
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return 0;
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}
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/* Internal function to parse the events received from UHID driver*/
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static int uhid_read_event(btif_hh_device_t* p_dev) {
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CHECK(p_dev);
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struct uhid_event ev;
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memset(&ev, 0, sizeof(ev));
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ssize_t ret;
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OSI_NO_INTR(ret = read(p_dev->fd, &ev, sizeof(ev)));
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if (ret == 0) {
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APPL_TRACE_ERROR("%s: Read HUP on uhid-cdev %s", __func__, strerror(errno));
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return -EFAULT;
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} else if (ret < 0) {
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APPL_TRACE_ERROR("%s: Cannot read uhid-cdev: %s", __func__,
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strerror(errno));
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return -errno;
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}
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switch (ev.type) {
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case UHID_START:
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APPL_TRACE_DEBUG("UHID_START from uhid-dev\n");
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p_dev->ready_for_data = true;
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break;
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case UHID_STOP:
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APPL_TRACE_DEBUG("UHID_STOP from uhid-dev\n");
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p_dev->ready_for_data = false;
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break;
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case UHID_OPEN:
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APPL_TRACE_DEBUG("UHID_OPEN from uhid-dev\n");
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p_dev->ready_for_data = true;
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break;
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case UHID_CLOSE:
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APPL_TRACE_DEBUG("UHID_CLOSE from uhid-dev\n");
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p_dev->ready_for_data = false;
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break;
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case UHID_OUTPUT:
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if (ret < (ssize_t)(sizeof(ev.type) + sizeof(ev.u.output))) {
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APPL_TRACE_ERROR("%s: Invalid size read from uhid-dev: %zd < %zu",
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__func__, ret, sizeof(ev.type) + sizeof(ev.u.output));
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return -EFAULT;
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}
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APPL_TRACE_DEBUG("UHID_OUTPUT: Report type = %d, report_size = %d",
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ev.u.output.rtype, ev.u.output.size);
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// Send SET_REPORT with feature report if the report type in output event
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// is FEATURE
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if (ev.u.output.rtype == UHID_FEATURE_REPORT)
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btif_hh_setreport(p_dev, BTHH_FEATURE_REPORT, ev.u.output.size,
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ev.u.output.data);
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else if (ev.u.output.rtype == UHID_OUTPUT_REPORT)
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btif_hh_senddata(p_dev, ev.u.output.size, ev.u.output.data);
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else
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APPL_TRACE_ERROR("%s: UHID_OUTPUT: Invalid report type = %d", __func__,
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ev.u.output.rtype);
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break;
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case UHID_OUTPUT_EV:
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if (ret < (ssize_t)(sizeof(ev.type) + sizeof(ev.u.output_ev))) {
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APPL_TRACE_ERROR("%s: Invalid size read from uhid-dev: %zd < %zu",
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__func__, ret,
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sizeof(ev.type) + sizeof(ev.u.output_ev));
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return -EFAULT;
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}
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APPL_TRACE_DEBUG("UHID_OUTPUT_EV from uhid-dev\n");
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break;
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case UHID_FEATURE:
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if (ret < (ssize_t)(sizeof(ev.type) + sizeof(ev.u.feature))) {
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APPL_TRACE_ERROR(
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"%s: UHID_FEATURE: Invalid size read from uhid-dev: %zd < %zu",
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__func__, ret, sizeof(ev.type) + sizeof(ev.u.feature));
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return -EFAULT;
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}
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APPL_TRACE_DEBUG("UHID_FEATURE: Report type = %d", ev.u.feature.rtype);
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p_dev->get_rpt_snt++;
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if (p_dev->get_rpt_id_queue) {
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uint32_t* get_rpt_id = (uint32_t*)osi_malloc(sizeof(uint32_t));
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*get_rpt_id = ev.u.feature.id;
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fixed_queue_enqueue(p_dev->get_rpt_id_queue, (void*)get_rpt_id);
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}
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if (ev.u.feature.rtype == UHID_FEATURE_REPORT)
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btif_hh_getreport(p_dev, BTHH_FEATURE_REPORT, ev.u.feature.rnum, 0);
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else
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APPL_TRACE_ERROR("%s: UHID_FEATURE: Invalid report type = %d", __func__,
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ev.u.feature.rtype);
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break;
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#ifdef OS_ANDROID // Host kernel does not support UHID_SET_REPORT
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case UHID_SET_REPORT:
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if (ret < (ssize_t)(sizeof(ev.type) + sizeof(ev.u.set_report))) {
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APPL_TRACE_ERROR("%s: Invalid size read from uhid-dev: %zd < %zu",
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__func__, ret, sizeof(ev.type) + sizeof(ev.u.set_report));
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return -EFAULT;
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}
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APPL_TRACE_DEBUG("UHID_SET_REPORT: Report type = %d, report_size = %d"
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, ev.u.set_report.rtype, ev.u.set_report.size);
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if (ev.u.set_report.rtype == UHID_FEATURE_REPORT)
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btif_hh_setreport(p_dev, BTHH_FEATURE_REPORT,
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ev.u.set_report.size, ev.u.set_report.data);
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else if (ev.u.set_report.rtype == UHID_OUTPUT_REPORT)
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btif_hh_setreport(p_dev, BTHH_OUTPUT_REPORT,
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ev.u.set_report.size, ev.u.set_report.data);
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else if(ev.u.set_report.rtype == UHID_INPUT_REPORT)
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btif_hh_setreport(p_dev, BTHH_INPUT_REPORT,
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ev.u.set_report.size, ev.u.set_report.data);
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else
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APPL_TRACE_ERROR("%s:UHID_SET_REPORT: Invalid Report type = %d"
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, __func__, ev.u.set_report.rtype);
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break;
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#endif // ifdef OS_ANDROID
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default:
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APPL_TRACE_DEBUG("Invalid event from uhid-dev: %u\n", ev.type);
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}
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return 0;
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}
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/*******************************************************************************
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*
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* Function create_thread
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*
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* Description creat a select loop
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*
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* Returns pthread_t
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*
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******************************************************************************/
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static inline pthread_t create_thread(void* (*start_routine)(void*),
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void* arg) {
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APPL_TRACE_DEBUG("create_thread: entered");
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pthread_attr_t thread_attr;
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pthread_attr_init(&thread_attr);
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pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_JOINABLE);
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pthread_t thread_id = -1;
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if (pthread_create(&thread_id, &thread_attr, start_routine, arg) != 0) {
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APPL_TRACE_ERROR("pthread_create : %s", strerror(errno));
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return -1;
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}
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APPL_TRACE_DEBUG("create_thread: thread created successfully");
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return thread_id;
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}
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/*******************************************************************************
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*
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* Function btif_hh_poll_event_thread
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*
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* Description the polling thread which polls for event from UHID driver
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*
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* Returns void
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*
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******************************************************************************/
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static void* btif_hh_poll_event_thread(void* arg) {
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btif_hh_device_t* p_dev = (btif_hh_device_t*)arg;
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struct pollfd pfds[1];
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// This thread is created by bt_main_thread with RT priority. Lower the thread
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// priority here since the tasks in this thread is not timing critical.
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struct sched_param sched_params;
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sched_params.sched_priority = THREAD_NORMAL_PRIORITY;
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if (sched_setscheduler(gettid(), SCHED_OTHER, &sched_params)) {
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APPL_TRACE_ERROR("%s: Failed to set thread priority to normal", __func__);
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p_dev->hh_poll_thread_id = -1;
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return 0;
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}
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p_dev->pid = gettid();
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pthread_setname_np(pthread_self(), BT_HH_THREAD);
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LOG_DEBUG("Host hid polling thread created name:%s pid:%d fd:%d",
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BT_HH_THREAD, p_dev->pid, p_dev->fd);
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pfds[0].fd = p_dev->fd;
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pfds[0].events = POLLIN;
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// Set the uhid fd as non-blocking to ensure we never block the BTU thread
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uhid_set_non_blocking(p_dev->fd);
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while (p_dev->hh_keep_polling) {
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int ret;
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OSI_NO_INTR(ret = poll(pfds, 1, 50));
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if (ret < 0) {
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APPL_TRACE_ERROR("%s: Cannot poll for fds: %s\n", __func__,
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strerror(errno));
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break;
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}
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if (pfds[0].revents & POLLIN) {
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APPL_TRACE_DEBUG("%s: POLLIN", __func__);
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ret = uhid_read_event(p_dev);
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if (ret != 0) break;
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}
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}
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p_dev->hh_poll_thread_id = -1;
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p_dev->pid = -1;
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return 0;
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}
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static inline void btif_hh_close_poll_thread(btif_hh_device_t* p_dev) {
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APPL_TRACE_DEBUG("%s", __func__);
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p_dev->hh_keep_polling = 0;
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if (p_dev->hh_poll_thread_id > 0)
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pthread_join(p_dev->hh_poll_thread_id, NULL);
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return;
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}
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void bta_hh_co_destroy(int fd) {
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struct uhid_event ev;
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memset(&ev, 0, sizeof(ev));
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ev.type = UHID_DESTROY;
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uhid_write(fd, &ev);
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APPL_TRACE_DEBUG("%s: Closing fd=%d", __func__, fd);
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close(fd);
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}
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int bta_hh_co_write(int fd, uint8_t* rpt, uint16_t len) {
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APPL_TRACE_VERBOSE("%s: UHID write %d", __func__, len);
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struct uhid_event ev;
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memset(&ev, 0, sizeof(ev));
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ev.type = UHID_INPUT;
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ev.u.input.size = len;
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if (len > sizeof(ev.u.input.data)) {
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APPL_TRACE_WARNING("%s: Report size greater than allowed size", __func__);
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return -1;
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}
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memcpy(ev.u.input.data, rpt, len);
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return uhid_write(fd, &ev);
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}
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/*******************************************************************************
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*
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* Function bta_hh_co_open
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*
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* Description When connection is opened, this call-out function is executed
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* by HH to do platform specific initialization.
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*
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* Returns void.
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******************************************************************************/
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void bta_hh_co_open(uint8_t dev_handle, uint8_t sub_class,
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tBTA_HH_ATTR_MASK attr_mask, uint8_t app_id) {
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uint32_t i;
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btif_hh_device_t* p_dev = NULL;
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if (dev_handle == BTA_HH_INVALID_HANDLE) {
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APPL_TRACE_WARNING("%s: Oops, dev_handle (%d) is invalid...", __func__,
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dev_handle);
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return;
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}
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for (i = 0; i < BTIF_HH_MAX_HID; i++) {
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p_dev = &btif_hh_cb.devices[i];
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if (p_dev->dev_status != BTHH_CONN_STATE_UNKNOWN &&
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p_dev->dev_handle == dev_handle) {
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// We found a device with the same handle. Must be a device reconnected.
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APPL_TRACE_WARNING(
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"%s: Found an existing device with the same handle dev_status=%d, "
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"address=%s, attr_mask=0x%04x, sub_class=0x%02x, app_id=%d",
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__func__, p_dev->dev_status, p_dev->bd_addr.ToString().c_str(),
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p_dev->attr_mask, p_dev->sub_class, p_dev->app_id);
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if (p_dev->fd < 0) {
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p_dev->fd = open(dev_path, O_RDWR | O_CLOEXEC);
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if (p_dev->fd < 0) {
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APPL_TRACE_ERROR("%s: Error: failed to open uhid, err:%s", __func__,
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strerror(errno));
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return;
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} else
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APPL_TRACE_DEBUG("%s: uhid fd = %d", __func__, p_dev->fd);
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}
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p_dev->hh_keep_polling = 1;
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p_dev->hh_poll_thread_id =
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create_thread(btif_hh_poll_event_thread, p_dev);
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break;
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}
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p_dev = NULL;
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}
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if (p_dev == NULL) {
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// Did not find a device reconnection case. Find an empty slot now.
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for (i = 0; i < BTIF_HH_MAX_HID; i++) {
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if (btif_hh_cb.devices[i].dev_status == BTHH_CONN_STATE_UNKNOWN) {
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p_dev = &btif_hh_cb.devices[i];
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p_dev->dev_handle = dev_handle;
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p_dev->attr_mask = attr_mask;
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p_dev->sub_class = sub_class;
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p_dev->app_id = app_id;
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p_dev->local_vup = false;
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btif_hh_cb.device_num++;
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// This is a new device,open the uhid driver now.
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p_dev->fd = open(dev_path, O_RDWR | O_CLOEXEC);
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if (p_dev->fd < 0) {
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APPL_TRACE_ERROR("%s: Error: failed to open uhid, err:%s", __func__,
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strerror(errno));
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return;
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} else {
|
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APPL_TRACE_DEBUG("%s: uhid fd = %d", __func__, p_dev->fd);
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p_dev->hh_keep_polling = 1;
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p_dev->hh_poll_thread_id =
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create_thread(btif_hh_poll_event_thread, p_dev);
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}
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break;
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}
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}
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}
|
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|
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if (p_dev == NULL) {
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APPL_TRACE_ERROR("%s: Error: too many HID devices are connected", __func__);
|
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return;
|
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}
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|
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p_dev->dev_status = BTHH_CONN_STATE_CONNECTED;
|
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p_dev->get_rpt_id_queue = fixed_queue_new(SIZE_MAX);
|
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CHECK(p_dev->get_rpt_id_queue);
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|
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APPL_TRACE_DEBUG("%s: Return device status %d", __func__, p_dev->dev_status);
|
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}
|
|
|
|
/*******************************************************************************
|
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*
|
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* Function bta_hh_co_close
|
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*
|
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* Description When connection is closed, this call-out function is executed
|
|
* by HH to do platform specific finalization.
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*
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* Parameters dev_handle - device handle
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* app_id - application id
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*
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* Returns void.
|
|
******************************************************************************/
|
|
void bta_hh_co_close(uint8_t dev_handle, uint8_t app_id) {
|
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uint32_t i;
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btif_hh_device_t* p_dev = NULL;
|
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|
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APPL_TRACE_WARNING("%s: dev_handle = %d, app_id = %d", __func__, dev_handle,
|
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app_id);
|
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if (dev_handle == BTA_HH_INVALID_HANDLE) {
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APPL_TRACE_WARNING("%s: Oops, dev_handle (%d) is invalid...", __func__,
|
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dev_handle);
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return;
|
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}
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for (i = 0; i < BTIF_HH_MAX_HID; i++) {
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p_dev = &btif_hh_cb.devices[i];
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fixed_queue_flush(p_dev->get_rpt_id_queue, osi_free);
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fixed_queue_free(p_dev->get_rpt_id_queue, NULL);
|
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p_dev->get_rpt_id_queue = 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",
|
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__func__, p_dev->dev_status, p_dev->dev_handle);
|
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btif_hh_close_poll_thread(p_dev);
|
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break;
|
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}
|
|
}
|
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}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function bta_hh_co_data
|
|
*
|
|
* Description This function is executed by BTA when HID host receive a
|
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* data report.
|
|
*
|
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* Parameters dev_handle - device handle
|
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* *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_t dev_handle, uint8_t* p_rpt, uint16_t len,
|
|
tBTA_HH_PROTO_MODE mode, uint8_t sub_class,
|
|
uint8_t ctry_code, UNUSED_ATTR const RawAddress& peer_addr,
|
|
uint8_t app_id) {
|
|
btif_hh_device_t* p_dev;
|
|
|
|
APPL_TRACE_DEBUG(
|
|
"%s: dev_handle = %d, subclass = 0x%02X, mode = %d, "
|
|
"ctry_code = %d, app_id = %d",
|
|
__func__, 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", __func__,
|
|
dev_handle);
|
|
return;
|
|
}
|
|
|
|
// Wait a maximum of MAX_POLLING_ATTEMPTS x POLLING_SLEEP_DURATION in case
|
|
// device creation is pending.
|
|
if (p_dev->fd >= 0) {
|
|
uint32_t polling_attempts = 0;
|
|
while (!p_dev->ready_for_data &&
|
|
polling_attempts++ < BTIF_HH_MAX_POLLING_ATTEMPTS) {
|
|
usleep(BTIF_HH_POLLING_SLEEP_DURATION_US);
|
|
}
|
|
}
|
|
|
|
// 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", __func__,
|
|
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, const char* dev_name,
|
|
uint16_t vendor_id, uint16_t product_id,
|
|
uint16_t version, uint8_t ctry_code, int dscp_len,
|
|
uint8_t* p_dscp) {
|
|
int result;
|
|
struct uhid_event ev;
|
|
|
|
if (p_dev->fd < 0) {
|
|
APPL_TRACE_WARNING("%s: Error: fd = %d, dscp_len = %d", __func__, p_dev->fd,
|
|
dscp_len);
|
|
return;
|
|
}
|
|
|
|
APPL_TRACE_WARNING("%s: fd = %d, name = [%s], dscp_len = %d", __func__,
|
|
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",
|
|
__func__, vendor_id, product_id, version, ctry_code);
|
|
|
|
// Create and send hid descriptor to kernel
|
|
memset(&ev, 0, sizeof(ev));
|
|
ev.type = UHID_CREATE;
|
|
strlcpy((char*)ev.u.create.name, dev_name, sizeof(ev.u.create.name));
|
|
snprintf((char*)ev.u.create.uniq, sizeof(ev.u.create.uniq), "%s",
|
|
p_dev->bd_addr.ToString().c_str());
|
|
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;
|
|
result = uhid_write(p_dev->fd, &ev);
|
|
|
|
APPL_TRACE_WARNING(
|
|
"%s: wrote descriptor to fd = %d, dscp_len = %d, result = %d", __func__,
|
|
p_dev->fd, dscp_len, result);
|
|
|
|
if (result) {
|
|
APPL_TRACE_WARNING("%s: Error: failed to send DSCP, result = %d", __func__,
|
|
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_t dev_handle, uint8_t status) {
|
|
APPL_TRACE_ERROR("%s: Error: UHID_SET_REPORT_REPLY not supported", __func__);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* 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_t dev_handle, uint8_t status, uint8_t* p_rpt,
|
|
uint16_t 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;
|
|
}
|
|
|
|
if (!p_dev->get_rpt_id_queue) {
|
|
APPL_TRACE_WARNING("%s: Error: missing UHID_GET_REPORT id queue", __func__);
|
|
return;
|
|
}
|
|
|
|
// Send the HID report to the kernel.
|
|
if (p_dev->fd >= 0 && p_dev->get_rpt_snt > 0 && p_dev->get_rpt_snt--) {
|
|
uint32_t* get_rpt_id =
|
|
(uint32_t*)fixed_queue_dequeue(p_dev->get_rpt_id_queue);
|
|
memset(&ev, 0, sizeof(ev));
|
|
ev.type = UHID_FEATURE_ANSWER;
|
|
ev.u.feature_answer.id = *get_rpt_id;
|
|
ev.u.feature_answer.err = status;
|
|
ev.u.feature_answer.size = len;
|
|
osi_free(get_rpt_id);
|
|
if (len > 0) {
|
|
if (len > UHID_DATA_MAX) {
|
|
APPL_TRACE_WARNING("%s: Report size greater than allowed size",
|
|
__func__);
|
|
return;
|
|
}
|
|
memcpy(ev.u.feature_answer.data, p_rpt + GET_RPT_RSP_OFFSET, len);
|
|
uhid_write(p_dev->fd, &ev);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* 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(const RawAddress& remote_bda,
|
|
tBTA_HH_RPT_CACHE_ENTRY* p_entry,
|
|
UNUSED_ATTR uint8_t app_id) {
|
|
unsigned idx = 0;
|
|
|
|
std::string addrstr = remote_bda.ToString();
|
|
const char* bdstr = addrstr.c_str();
|
|
|
|
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_config_set_int(bdstr, "HidReportVersion", BTA_HH_CACHE_REPORT_VERSION);
|
|
BTIF_TRACE_DEBUG("%s() - Saving report; dev=%s, idx=%d", __func__, 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_co_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 cached report array
|
|
*
|
|
******************************************************************************/
|
|
tBTA_HH_RPT_CACHE_ENTRY* bta_hh_le_co_cache_load(const RawAddress& remote_bda,
|
|
uint8_t* p_num_rpt,
|
|
UNUSED_ATTR uint8_t app_id) {
|
|
std::string addrstr = remote_bda.ToString();
|
|
const char* bdstr = addrstr.c_str();
|
|
|
|
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);
|
|
|
|
int cache_version = -1;
|
|
btif_config_get_int(bdstr, "HidReportVersion", &cache_version);
|
|
|
|
if (cache_version != BTA_HH_CACHE_REPORT_VERSION) {
|
|
bta_hh_le_co_reset_rpt_cache(remote_bda, app_id);
|
|
return NULL;
|
|
}
|
|
|
|
*p_num_rpt = len / sizeof(tBTA_HH_RPT_CACHE_ENTRY);
|
|
|
|
BTIF_TRACE_DEBUG("%s() - Loaded %d reports; dev=%s", __func__, *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(const RawAddress& remote_bda,
|
|
UNUSED_ATTR uint8_t app_id) {
|
|
std::string addrstr = remote_bda.ToString();
|
|
const char* bdstr = addrstr.c_str();
|
|
|
|
btif_config_remove(bdstr, "HidReport");
|
|
btif_config_remove(bdstr, "HidReportVersion");
|
|
BTIF_TRACE_DEBUG("%s() - Reset cache for bda %s", __func__, bdstr);
|
|
}
|