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custom_baud_linux.c
52 строки
1 KB
Antonio Vázquez Blanco
Reorder imports to comply with coding style guidelines
28 июн 2026, 11:29
28 июн 2026, 11:29
b7e6803
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/* * This file is part of the flashrom project. * * SPDX-License-Identifier: GPL-2.0-or-later * SPDX-FileCopyrightText: 2017 Urja Rannikko <urjaman@gmail.com> */ #include "custom_baud.h" #include <sys/ioctl.h> #include <fcntl.h> #include <asm-generic/termbits.h> #include <asm-generic/ioctls.h> /* * This include hell above is why this is in a separate source file. See eg. * https://www.downtowndougbrown.com/2013/11/linux-custom-serial-baud-rates/ * https://stackoverflow.com/questions/12646324/how-to-set-a-custom-baud-rate-on-linux * https://github.com/jbkim/Linux-custom-baud-rate * for more info. */ int set_custom_baudrate(int fd, unsigned int baud, const enum custom_baud_stage stage, void *tio_wanted) { struct termios2 tio; if (stage != BEFORE_FLAGS) return 0; if (ioctl(fd, TCGETS2, &tio)) { return -1; } tio.c_cflag &= ~CBAUD; tio.c_cflag |= BOTHER; tio.c_ispeed = baud; tio.c_ospeed = baud; return ioctl(fd, TCSETS2, &tio); } int use_custom_baud(unsigned int baud, const struct baudentry *baudtable) { int i; for (i = 0; baudtable[i].baud; i++) { if (baudtable[i].baud == baud) return 0; if (baudtable[i].baud > baud) return 1; } return 1; }