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![Tom Rini](/assets/img/avatar_default.png)
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
133 lines
2.3 KiB
C
133 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2000
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* Murray Jensen <Murray.Jensen@csiro.au>
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*/
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <sys/time.h>
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#include "serial.h"
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#if defined(__sun__) || \
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defined(__OpenBSD__) || \
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defined(__FreeBSD__) || \
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defined(__NetBSD__) || \
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defined(__APPLE__)
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static struct termios tios = { BRKINT, 0, B115200|CS8|CREAD, 0, { 0 } };
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#else
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static struct termios tios = { BRKINT, 0, B115200|CS8|CREAD, 0, 0 };
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#endif
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static struct speedmap {
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char *str;
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speed_t val;
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} speedmap[] = {
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{ "50", B50 }, { "75", B75 }, { "110", B110 },
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{ "134", B134 }, { "150", B150 }, { "200", B200 },
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{ "300", B300 }, { "600", B600 }, { "1200", B1200 },
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{ "1800", B1800 }, { "2400", B2400 }, { "4800", B4800 },
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{ "9600", B9600 }, { "19200", B19200 }, { "38400", B38400 },
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{ "57600", B57600 },
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#ifdef B76800
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{ "76800", B76800 },
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#endif
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{ "115200", B115200 },
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#ifdef B153600
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{ "153600", B153600 },
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#endif
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{ "230400", B230400 },
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#ifdef B307200
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{ "307200", B307200 },
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#endif
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#ifdef B460800
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{ "460800", B460800 }
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#endif
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};
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static int nspeeds = sizeof speedmap / sizeof speedmap[0];
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speed_t
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cvtspeed(char *str)
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{
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struct speedmap *smp = speedmap, *esmp = &speedmap[nspeeds];
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while (smp < esmp) {
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if (strcmp(str, smp->str) == 0)
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return (smp->val);
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smp++;
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}
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return B0;
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}
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int
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serialopen(char *device, speed_t speed)
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{
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int fd;
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if (cfsetospeed(&tios, speed) < 0)
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return -1;
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if ((fd = open(device, O_RDWR)) < 0)
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return -1;
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if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
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(void)close(fd);
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return -1;
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}
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return fd;
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}
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int
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serialreadchar(int fd, int timeout)
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{
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fd_set fds;
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struct timeval tv;
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int n;
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char ch;
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tv.tv_sec = timeout;
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tv.tv_usec = 0;
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FD_ZERO(&fds);
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FD_SET(fd, &fds);
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/* this is a fucking horrible quick hack - fix this */
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if ((n = select(fd + 1, &fds, 0, 0, &tv)) < 0)
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return SERIAL_ERROR;
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if (n == 0)
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return SERIAL_TIMEOUT;
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if ((n = read(fd, &ch, 1)) < 0)
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return SERIAL_ERROR;
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if (n == 0)
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return SERIAL_EOF;
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return ch;
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}
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int
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serialwrite(int fd, char *buf, int len)
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{
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int n;
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do {
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n = write(fd, buf, len);
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if (n < 0)
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return 1;
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len -= n;
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buf += n;
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} while (len > 0);
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return 0;
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}
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int
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serialclose(int fd)
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{
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return close(fd);
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}
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