aboutsummaryrefslogtreecommitdiffstats
path: root/dvb-t/fr-Alençon
diff options
context:
space:
mode:
authorChristoph Pfister <pfister@linuxtv.org>2009-08-08 19:17:21 +0200
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-08-08 19:17:21 +0200
commitc7377c78dc966ed46a2134e1c688a2cb24b19379 (patch)
tree0948117816a0693599137968657d058b187d00d6 /dvb-t/fr-Alençon
parent2ddbc4dcb2a4c4b8926a82b2a7b32a4eb3d8262e (diff)
downloaddtv-scan-tables-c7377c78dc966ed46a2134e1c688a2cb24b19379.tar.gz
update scan file for se-Ornskoldsvik_As
submitted by jonas websystem.se
Diffstat (limited to 'dvb-t/fr-Alençon')
0 files changed, 0 insertions, 0 deletions
'#n112'>112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453
/* $Id: drv_generic_serial.c,v 1.17 2005/05/08 04:32:44 reinelt Exp $
 *
 * generic driver helper for serial and usbserial displays
 *
 * Copyright (C) 1999, 2000 Michael Reinelt <reinelt@eunet.at>
 * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
 *
 * This file is part of LCD4Linux.
 *
 * LCD4Linux is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * LCD4Linux is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *
 * $Log: drv_generic_serial.c,v $
 * Revision 1.17  2005/05/08 04:32:44  reinelt
 * CodingStyle added and applied
 *
 * Revision 1.16  2005/01/18 06:30:23  reinelt
 * added (C) to all copyright statements
 *
 * Revision 1.15  2004/06/26 12:04:59  reinelt
 *
 * uh-oh... the last CVS log message messed up things a lot...
 *
 * Revision 1.14  2004/06/26 09:27:21  reinelt
 *
 * added '-W' to CFLAGS
 * changed all C++ comments to C ones
 * cleaned up a lot of signed/unsigned mistakes
 *
 * Revision 1.13  2004/06/26 06:12:15  reinelt
 *
 * support for Beckmann+Egle Compact Terminals
 * some mostly cosmetic changes in the MatrixOrbital and USBLCD driver
 * added debugging to the generic serial driver
 * fixed a bug in the generic text driver where icons could be drawn outside
 * the display bounds
 *
 * Revision 1.12  2004/06/20 10:09:55  reinelt
 *
 * 'const'ified the whole source
 *
 * Revision 1.11  2004/06/01 06:45:30  reinelt
 *
 * some Fixme's processed
 * documented some code
 *
 * Revision 1.10  2004/05/31 21:05:13  reinelt
 *
 * fixed lots of bugs in the Cwlinux driver
 * do not emit EAGAIN error on the first retry
 * made plugin_i2c_sensors a bit less 'chatty'
 * moved init and exit functions to the bottom of plugin_pop3
 *
 * Revision 1.9  2004/05/28 13:51:42  reinelt
 *
 * ported driver for Beckmann+Egle Mini-Terminals
 * added 'flags' parameter to serial_init()
 *
 * Revision 1.8  2004/03/03 04:44:16  reinelt
 * changes (cosmetics?) to the big patch from Martin
 * hash patch un-applied
 *
 * Revision 1.7  2004/03/03 03:47:04  reinelt
 * big patch from Martin Hejl:
 * - use qprintf() where appropriate
 * - save CPU cycles on gettimeofday()
 * - add quit() functions to free allocated memory
 * - fixed lots of memory leaks
 *
 * Revision 1.6  2004/02/14 11:56:17  reinelt
 * M50530 driver ported
 * changed lots of 'char' to 'unsigned char'
 *
 * Revision 1.5  2004/02/04 19:10:51  reinelt
 * Crystalfontz driver nearly finished
 *
 * Revision 1.4  2004/02/01 08:05:12  reinelt
 * Crystalfontz 633 extensions (CRC checking and stuff)
 * Models table for HD44780
 * Noritake VFD BVrightness patch from Bill Paxton
 *
 * Revision 1.3  2004/01/29 04:40:02  reinelt
 * every .c file includes "config.h" now
 *
 * Revision 1.2  2004/01/25 05:30:09  reinelt
 * plugin_netdev for parsing /proc/net/dev added
 *
 * Revision 1.1  2004/01/20 14:26:09  reinelt
 * moved drv_generic to drv_generic_serial
 *
 * Revision 1.2  2004/01/20 05:36:59  reinelt
 * moved text-display-specific stuff to drv_generic_text
 * moved all the bar stuff from drv_generic_bar to generic_text
 *
 * Revision 1.1  2004/01/20 04:51:39  reinelt
 * moved generic stuff from drv_MatrixOrbital to drv_generic
 * implemented new-stylish bars which are nearly finished
 *
 */

/* 
 *
 * exported fuctions:
 *
 * int drv_generic_serial_open (char *section, char *driver, unsigned int flags)
 *   opens the serial port
 *
 * int drv_generic_serial_poll (char *string, int len)
 *   reads from the serial or USB port
 *   without retry
 *
 * int drv_generic_serial_read (char *string, int len);
 *   reads from the serial or USB port
 *   with retry
 *
 * void drv_generic_serial_write (char *string, int len);
 *   writes to the serial or USB port
 *
 * int drv_generic_serial_close (void);
 *   closes the serial port
 *
 */

#include "config.h"

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <termios.h>
#include <fcntl.h>
#include <time.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/stat.h>

#include "debug.h"
#include "qprintf.h"
#include "cfg.h"
#include "drv_generic_serial.h"


static char *Section;
static char *Driver;
static char *Port;
static speed_t Speed;
static int Device = -1;


#define LOCK "/var/lock/LCK..%s"


/****************************************/
/*** generic serial/USB communication ***/
/****************************************/

static pid_t drv_generic_serial_lock_port(const char *Port)
{
    char lockfile[256];
    char tempfile[256];
    char buffer[16];
    char *port, *p;
    int fd, len, pid;

    if (strncmp(Port, "/dev/", 5) == 0) {
	port = strdup(Port + 5);
    } else {
	port = strdup(Port);
    }

    while ((p = strchr(port, '/')) != NULL) {
	*p = '_';
    }

    qprintf(lockfile, sizeof(lockfile), LOCK, port);
    qprintf(tempfile, sizeof(tempfile), LOCK, "TMP.XXXXXX");

    free(port);

    if ((fd = mkstemp(tempfile)) == -1) {
	error("mkstemp(%s) failed: %s", tempfile, strerror(errno));
	return -1;
    }

    if (fchmod(fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) == -1) {
	error("fchmod(%s) failed: %s", tempfile, strerror(errno));
	close(fd);
	unlink(tempfile);
	return -1;
    }

    snprintf(buffer, sizeof(buffer), "%10d\n", (int) getpid());
    len = strlen(buffer);
    if (write(fd, buffer, len) != len) {
	error("write(%s) failed: %s", tempfile, strerror(errno));
	close(fd);
	unlink(tempfile);
	return -1;
    }
    close(fd);


    while (link(tempfile, lockfile) == -1) {

	if (errno != EEXIST) {
	    error("link(%s, %s) failed: %s", tempfile, lockfile, strerror(errno));
	    unlink(tempfile);
	    return -1;
	}

	if ((fd = open(lockfile, O_RDONLY)) == -1) {
	    if (errno == ENOENT)
		continue;	/* lockfile disappared */
	    error("open(%s) failed: %s", lockfile, strerror(errno));
	    unlink(tempfile);
	    return -1;
	}

	len = read(fd, buffer, sizeof(buffer) - 1);
	if (len < 0) {
	    error("read(%s) failed: %s", lockfile, strerror(errno));
	    unlink(tempfile);
	    return -1;
	}

	buffer[len] = '\0';
	if (sscanf(buffer, "%d", &pid) != 1 || pid == 0) {
	    error("scan(%s) failed.", lockfile);
	    unlink(tempfile);
	    return -1;
	}

	if (pid == getpid()) {
	    error("%s already locked by us. uh-oh...", lockfile);
	    unlink(tempfile);
	    return 0;
	}

	if ((kill(pid, 0) == -1) && errno == ESRCH) {
	    error("removing stale lockfile %s", lockfile);
	    if (unlink(lockfile) == -1 && errno != ENOENT) {
		error("unlink(%s) failed: %s", lockfile, strerror(errno));
		unlink(tempfile);
		return pid;
	    }
	    continue;
	}
	unlink(tempfile);
	return pid;
    }

    unlink(tempfile);
    return 0;
}


static pid_t drv_generic_serial_unlock_port(const char *Port)
{
    char lockfile[256];
    char *port, *p;

    if (strncmp(Port, "/dev/", 5) == 0) {
	port = strdup(Port + 5);
    } else {
	port = strdup(Port);
    }

    while ((p = strchr(port, '/')) != NULL) {
	*p = '_';
    }

    qprintf(lockfile, sizeof(lockfile), LOCK, port);
    unlink(lockfile);
    free(port);

    return 0;
}


int drv_generic_serial_open(const char *section, const char *driver, const unsigned int flags)
{
    int i, fd;
    pid_t pid;
    struct termios portset;

    Section = (char *) section;
    Driver = (char *) driver;

    Port = cfg_get(section, "Port", NULL);
    if (Port == NULL || *Port == '\0') {
	error("%s: no '%s.Port' entry from %s", Driver, section, cfg_source());
	return -1;
    }

    if (cfg_number(section, "Speed", 19200, 1200, 115200, &i) < 0)
	return -1;
    switch (i) {
    case 1200:
	Speed = B1200;
	break;
    case 2400:
	Speed = B2400;
	break;
    case 4800:
	Speed = B4800;
	break;
    case 9600:
	Speed = B9600;
	break;
    case 19200:
	Speed = B19200;
	break;
    case 38400:
	Speed = B38400;
	break;
    case 57600:
	Speed = B57600;
	break;
    case 115200:
	Speed = B115200;
	break;
    default:
	error("%s: unsupported speed '%d' from %s", Driver, i, cfg_source());
	return -1;
    }

    info("%s: using port '%s' at %d baud", Driver, Port, i);

    if ((pid = drv_generic_serial_lock_port(Port)) != 0) {
	if (pid == -1)
	    error("%s: port %s could not be locked", Driver, Port);
	else
	    error("%s: port %s is locked by process %d", Driver, Port, pid);
	return -1;
    }

    fd = open(Port, O_RDWR | O_NOCTTY | O_NDELAY);
    if (fd == -1) {
	error("%s: open(%s) failed: %s", Driver, Port, strerror(errno));
	drv_generic_serial_unlock_port(Port);
	return -1;
    }

    if (tcgetattr(fd, &portset) == -1) {
	error("%s: tcgetattr(%s) failed: %s", Driver, Port, strerror(errno));
	drv_generic_serial_unlock_port(Port);
	return -1;
    }

    cfmakeraw(&portset);
    portset.c_cflag |= flags;
    cfsetispeed(&portset, Speed);
    cfsetospeed(&portset, Speed);
    if (tcsetattr(fd, TCSANOW, &portset) == -1) {
	error("%s: tcsetattr(%s) failed: %s", Driver, Port, strerror(errno));
	drv_generic_serial_unlock_port(Port);
	return -1;
    }

    Device = fd;
    return Device;
}


int drv_generic_serial_poll(char *string, const int len)
{
    int ret;
    if (Device == -1)
	return -1;
    ret = read(Device, string, len);
    if (ret < 0 && errno != EAGAIN) {
	error("%s: read(%s) failed: %s", Driver, Port, strerror(errno));
    }
    return ret;
}


int drv_generic_serial_read(char *string, const int len)
{
    int count, run, ret;

    count = len < 0 ? -len : len;

    for (run = 0; run < 10; run++) {
	ret = drv_generic_serial_poll(string, count);
	if (ret >= 0 || errno != EAGAIN)
	    break;
	info("%s: read(%s): EAGAIN", Driver, Port);
	usleep(1000);
    }

    if (ret > 0 && ret != count && len > 0) {
	error("%s: partial read(%s): len=%d ret=%d", Driver, Port, len, ret);
    }

    return ret;
}


void drv_generic_serial_write(const char *string, const int len)
{
    int run, ret;

#if 0
    int i;
    for (i = 0; i < len; i++) {
	int c = string[i];
	debug("serial_write: %03d %03o 0x%02x %c", c, c, c, iscntrl(c) ? '*' : c);
    }
#endif

    if (Device == -1)
	return;
    for (run = 0; run < 10; run++) {
	ret = write(Device, string, len);
	if (ret >= 0 || errno != EAGAIN)
	    break;
	if (run > 0)
	    info("%s: write(%s): EAGAIN #%d", Driver, Port, run);
	usleep(1000);
    }

    if (ret < 0) {
	error("%s: write(%s) failed: %s", Driver, Port, strerror(errno));
    } else if (ret != len) {
	error("%s: partial write(%s): len=%d ret=%d", Driver, Port, len, ret);
    }

    return;
}


int drv_generic_serial_close(void)
{
    info("%s: closing port %s", Driver, Port);
    close(Device);
    drv_generic_serial_unlock_port(Port);
    free(Port);
    return 0;
}