Lines Matching +full:modem +full:- +full:init
4 * baycom_par.c -- baycom par96 and picpar radio modem driver.
6 * Copyright (C) 1996-2000 Thomas Sailer (sailer@ife.ee.ethz.ch)
29 * par96: This is a modem for 9600 baud FSK compatible to the G3RUH standard.
30 * The modem does all the filtering and regenerates the receiver clock.
34 * modem connects to the parallel port, hence the name. The modem
36 * polynomial to the PC. This modem is no longer available (at least
37 * from Baycom) and has been replaced by the PICPAR modem (see below).
39 * cq-DL :-).
41 * picpar: This is a redesign of the par96 modem by Henning Rech, DF9IC. The
42 * modem is protocol compatible to par96, but uses only three low
58 * 0.3 26.04.1997 init code/data tagged
62 * removed some pre-2.2 kernel compatibility cruft
79 #include <linux/init.h>
91 /* --------------------------------------------------------------------- */
96 * modem options; bit mask
100 /* --------------------------------------------------------------------- */
103 static const char bc_drvinfo[] = KERN_INFO "baycom_par: (C) 1996-2000 Thomas Sailer, HB9JNX/AE4WA\n"
106 /* --------------------------------------------------------------------- */
112 /* --------------------------------------------------------------------- */
123 /* ---------------------------------------------------------------------- */
144 } modem; member
157 /* --------------------------------------------------------------------- */
166 bc->debug_vals.cur_intcnt++; in baycom_int_freq()
167 if (time_after_eq(cur_jiffies, bc->debug_vals.last_jiffies + HZ)) { in baycom_int_freq()
168 bc->debug_vals.last_jiffies = cur_jiffies; in baycom_int_freq()
169 bc->debug_vals.last_intcnt = bc->debug_vals.cur_intcnt; in baycom_int_freq()
170 bc->debug_vals.cur_intcnt = 0; in baycom_int_freq()
171 bc->debug_vals.last_pllcorr = bc->debug_vals.cur_pllcorr; in baycom_int_freq()
172 bc->debug_vals.cur_pllcorr = 0; in baycom_int_freq()
177 /* --------------------------------------------------------------------- */
193 /* --------------------------------------------------------------------- */
198 unsigned int data = hdlcdrv_getbits(&bc->hdrv); in par96_tx()
199 struct parport *pp = bc->pdev->port; in par96_tx()
203 bc->modem.par96.scram = ((bc->modem.par96.scram << 1) | in par96_tx()
204 (bc->modem.par96.scram & 1)); in par96_tx()
206 bc->modem.par96.scram ^= 1; in par96_tx()
207 if (bc->modem.par96.scram & (PAR96_SCRAM_TAP1 << 1)) in par96_tx()
208 bc->modem.par96.scram ^= in par96_tx()
210 if (bc->modem.par96.scram & (PAR96_SCRAM_TAP1 << 2)) in par96_tx()
212 pp->ops->write_data(pp, val); in par96_tx()
213 pp->ops->write_data(pp, val | PAR96_BURST); in par96_tx()
217 /* --------------------------------------------------------------------- */
223 struct parport *pp = bc->pdev->port; in par96_rx()
229 bc->modem.par96.descram = (bc->modem.par96.descram << 1); in par96_rx()
230 if (pp->ops->read_status(pp) & PAR96_RXBIT) in par96_rx()
231 bc->modem.par96.descram |= 1; in par96_rx()
232 descx = bc->modem.par96.descram ^ in par96_rx()
233 (bc->modem.par96.descram >> 1); in par96_rx()
235 pp->ops->write_data(pp, PAR97_POWER | PAR96_PTT); in par96_rx()
241 pp->ops->write_data(pp, PAR97_POWER | PAR96_PTT | PAR96_BURST); in par96_rx()
243 hdlcdrv_putbits(&bc->hdrv, data); in par96_rx()
247 if (bc->options & BAYCOM_OPTIONS_SOFTDCD) { in par96_rx()
248 bc->modem.par96.dcd_shreg = (bc->modem.par96.dcd_shreg >> 16) in par96_rx()
253 if ((bc->modem.par96.dcd_shreg & mask) == mask2) in par96_rx()
254 bc->modem.par96.dcd_count = HDLCDRV_MAXFLEN+4; in par96_rx()
258 if (((bc->modem.par96.dcd_shreg & mask) == mask2) && in par96_rx()
259 (bc->modem.par96.dcd_count >= 0)) in par96_rx()
260 bc->modem.par96.dcd_count -= HDLCDRV_MAXFLEN-10; in par96_rx()
262 if (bc->modem.par96.dcd_count >= 0) in par96_rx()
263 bc->modem.par96.dcd_count -= 2; in par96_rx()
264 hdlcdrv_setdcd(&bc->hdrv, bc->modem.par96.dcd_count > 0); in par96_rx()
266 hdlcdrv_setdcd(&bc->hdrv, !!(pp->ops->read_status(pp) & PAR96_DCD)); in par96_rx()
270 /* --------------------------------------------------------------------- */
281 if (hdlcdrv_ptt(&bc->hdrv)) in par96_interrupt()
285 if (--bc->modem.arb_divider <= 0) { in par96_interrupt()
286 bc->modem.arb_divider = 6; in par96_interrupt()
288 hdlcdrv_arbitrate(dev, &bc->hdrv); in par96_interrupt()
292 hdlcdrv_transmitter(dev, &bc->hdrv); in par96_interrupt()
293 hdlcdrv_receiver(dev, &bc->hdrv); in par96_interrupt()
297 /* --------------------------------------------------------------------- */
304 printk(KERN_DEBUG "baycom_par: %s: why am I being woken up?\n", dev->name); in par96_wakeup()
305 if (!parport_claim(bc->pdev)) in par96_wakeup()
306 printk(KERN_DEBUG "baycom_par: %s: I'm broken.\n", dev->name); in par96_wakeup()
309 /* --------------------------------------------------------------------- */
319 return -ENXIO; in par96_open()
320 pp = parport_find_base(dev->base_addr); in par96_open()
322 printk(KERN_ERR "baycom_par: parport at 0x%lx unknown\n", dev->base_addr); in par96_open()
323 return -ENXIO; in par96_open()
325 if (pp->irq < 0) { in par96_open()
326 printk(KERN_ERR "baycom_par: parport at 0x%lx has no irq\n", pp->base); in par96_open()
328 return -ENXIO; in par96_open()
330 if ((~pp->modes) & (PARPORT_MODE_PCSPP | PARPORT_MODE_SAFEININT)) { in par96_open()
331 printk(KERN_ERR "baycom_par: parport at 0x%lx cannot be used\n", pp->base); in par96_open()
333 return -ENXIO; in par96_open()
335 memset(&bc->modem, 0, sizeof(bc->modem)); in par96_open()
336 bc->hdrv.par.bitrate = 9600; in par96_open()
349 return -ENODEV; in par96_open()
351 bc->pdev = parport_register_dev_model(pp, dev->name, &par_cb, i); in par96_open()
353 if (!bc->pdev) { in par96_open()
354 printk(KERN_ERR "baycom_par: cannot register parport at 0x%lx\n", dev->base_addr); in par96_open()
355 return -ENXIO; in par96_open()
357 if (parport_claim(bc->pdev)) { in par96_open()
358 printk(KERN_ERR "baycom_par: parport at 0x%lx busy\n", pp->base); in par96_open()
359 parport_unregister_device(bc->pdev); in par96_open()
360 return -EBUSY; in par96_open()
362 pp = bc->pdev->port; in par96_open()
363 dev->irq = pp->irq; in par96_open()
364 pp->ops->data_forward(pp); in par96_open()
365 bc->hdrv.par.bitrate = 9600; in par96_open()
366 pp->ops->write_data(pp, PAR96_PTT | PAR97_POWER); /* switch off PTT */ in par96_open()
367 pp->ops->enable_irq(pp); in par96_open()
369 bc_drvname, dev->base_addr, dev->irq, bc->options); in par96_open()
373 /* --------------------------------------------------------------------- */
381 return -EINVAL; in par96_close()
382 pp = bc->pdev->port; in par96_close()
384 pp->ops->disable_irq(pp); in par96_close()
386 pp->ops->write_data(pp, PAR96_PTT | PAR97_POWER); in par96_close()
387 parport_release(bc->pdev); in par96_close()
388 parport_unregister_device(bc->pdev); in par96_close()
390 bc_drvname, dev->base_addr, dev->irq); in par96_close()
394 /* --------------------------------------------------------------------- */
402 /* --------------------------------------------------------------------- */
412 /* --------------------------------------------------------------------- */
417 bc->options = 0; in baycom_setmode()
419 bc->options = BAYCOM_OPTIONS_SOFTDCD; in baycom_setmode()
421 bc->options = !!strchr(modestr, '*'); in baycom_setmode()
425 /* --------------------------------------------------------------------- */
434 return -EINVAL; in baycom_ioctl()
437 BUG_ON(bc->hdrv.magic != HDLCDRV_MAGIC); in baycom_ioctl()
440 return -ENOIOCTLCMD; in baycom_ioctl()
441 switch (hi->cmd) { in baycom_ioctl()
446 strcpy(hi->data.modename, bc->options ? "par96" : "picpar"); in baycom_ioctl()
447 if (copy_to_user(ifr->ifr_data, hi, sizeof(struct hdlcdrv_ioctl))) in baycom_ioctl()
448 return -EFAULT; in baycom_ioctl()
453 return -EACCES; in baycom_ioctl()
454 hi->data.modename[sizeof(hi->data.modename)-1] = '\0'; in baycom_ioctl()
455 return baycom_setmode(bc, hi->data.modename); in baycom_ioctl()
458 strcpy(hi->data.modename, "par96,picpar"); in baycom_ioctl()
459 if (copy_to_user(ifr->ifr_data, hi, sizeof(struct hdlcdrv_ioctl))) in baycom_ioctl()
460 return -EFAULT; in baycom_ioctl()
468 if (copy_from_user(&bi, ifr->ifr_data, sizeof(bi))) in baycom_ioctl()
469 return -EFAULT; in baycom_ioctl()
472 return -ENOIOCTLCMD; in baycom_ioctl()
476 bi.data.dbg.debug1 = bc->hdrv.ptt_keyed; in baycom_ioctl()
477 bi.data.dbg.debug2 = bc->debug_vals.last_intcnt; in baycom_ioctl()
478 bi.data.dbg.debug3 = bc->debug_vals.last_pllcorr; in baycom_ioctl()
483 if (copy_to_user(ifr->ifr_data, &bi, sizeof(bi))) in baycom_ioctl()
484 return -EFAULT; in baycom_ioctl()
489 /* --------------------------------------------------------------------- */
503 MODULE_DESCRIPTION("Baycom par96 and picpar amateur radio modem driver");
506 /* --------------------------------------------------------------------- */
510 struct device_driver *drv = par_dev->dev.driver; in baycom_par_probe()
511 int len = strlen(drv->name); in baycom_par_probe()
513 if (strncmp(par_dev->name, drv->name, len)) in baycom_par_probe()
514 return -ENODEV; in baycom_par_probe()
566 return -ENXIO; in init_baycompar()
587 /* --------------------------------------------------------------------- */
615 /* --------------------------------------------------------------------- */