| // Copyright 2022 The ChromiumOS Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "libec/mkbp_event.h" |
| |
| #include <poll.h> |
| #include <sys/ioctl.h> |
| |
| #include <base/posix/eintr_wrapper.h> |
| #include <chromeos/ec/cros_ec_dev.h> |
| |
| namespace ec { |
| |
| MkbpEvent::MkbpEvent(int fd, enum ec_mkbp_event event_type) |
| : fd_(fd), event_type_(event_type) {} |
| |
| int MkbpEvent::Enable() { |
| return HANDLE_EINTR( |
| ioctl(fd_, CROS_EC_DEV_IOCEVENTMASK_V2, 1 << event_type_)); |
| } |
| |
| int MkbpEvent::Wait(int timeout) { |
| struct pollfd pf = {.fd = fd_, .events = POLLIN}; |
| |
| int rv = poll(&pf, 1, timeout); |
| if (rv != 1) |
| return rv; |
| |
| if (pf.revents != POLLIN) |
| return -pf.revents; |
| |
| return rv; |
| } |
| |
| } // namespace ec |
