105 	struct waveform_private *devpriv = dev->private;  in fake_sawtooth()  local
114 	binary_amplitude *= devpriv->wf_amplitude;  in fake_sawtooth()
119 	do_div(value, devpriv->wf_period);  in fake_sawtooth()
137 	struct waveform_private *devpriv = dev->private;  in fake_squarewave()  local
145 	value *= devpriv->wf_amplitude;  in fake_squarewave()
149 	if (current_time < devpriv->wf_period / 2) {  in fake_squarewave()
198 	struct waveform_private *devpriv = from_timer(devpriv, t, ai_timer);  in waveform_ai_timer()  local
199 	struct comedi_device *dev = devpriv->dev;  in waveform_ai_timer()
210 	while (nsamples && devpriv->ai_convert_time < now) {  in waveform_ai_timer()
215 				       CR_RANGE(chanspec), devpriv->wf_current);  in waveform_ai_timer()
218 		time_increment = devpriv->ai_convert_period;  in waveform_ai_timer()
221 			time_increment += devpriv->ai_scan_period -  in waveform_ai_timer()
222 					  devpriv->ai_convert_period *  in waveform_ai_timer()
225 		devpriv->wf_current += time_increment;  in waveform_ai_timer()
226 		if (devpriv->wf_current >= devpriv->wf_period)  in waveform_ai_timer()
227 			devpriv->wf_current %= devpriv->wf_period;  in waveform_ai_timer()
228 		devpriv->ai_convert_time += time_increment;  in waveform_ai_timer()
235 		if (devpriv->ai_convert_time > now)  in waveform_ai_timer()
236 			time_increment = devpriv->ai_convert_time - now;  in waveform_ai_timer()
239 		mod_timer(&devpriv->ai_timer,  in waveform_ai_timer()
351 	struct waveform_private *devpriv = dev->private;  in waveform_ai_cmd()  local
363 		devpriv->ai_convert_period = 0;  in waveform_ai_cmd()
365 		devpriv->ai_convert_period = cmd->convert_arg / NSEC_PER_USEC;  in waveform_ai_cmd()
368 		devpriv->ai_scan_period = devpriv->ai_convert_period *  in waveform_ai_cmd()
371 		devpriv->ai_scan_period = cmd->scan_begin_arg / NSEC_PER_USEC;  in waveform_ai_cmd()
381 	first_convert_time = devpriv->ai_convert_period;  in waveform_ai_cmd()
383 		first_convert_time += devpriv->ai_scan_period;  in waveform_ai_cmd()
384 	devpriv->ai_convert_time = ktime_to_us(ktime_get()) +  in waveform_ai_cmd()
388 	wf_current = devpriv->ai_convert_time;  in waveform_ai_cmd()
389 	devpriv->wf_current = do_div(wf_current, devpriv->wf_period);  in waveform_ai_cmd()
396 	devpriv->ai_timer.expires =  in waveform_ai_cmd()
397 		jiffies + usecs_to_jiffies(devpriv->ai_convert_period) + 1;  in waveform_ai_cmd()
398 	add_timer(&devpriv->ai_timer);  in waveform_ai_cmd()
405 	struct waveform_private *devpriv = dev->private;  in waveform_ai_cancel()  local
409 		del_timer(&devpriv->ai_timer);  in waveform_ai_cancel()
411 		del_timer_sync(&devpriv->ai_timer);  in waveform_ai_cancel()
420 	struct waveform_private *devpriv = dev->private;  in waveform_ai_insn_read()  local
424 		data[i] = devpriv->ao_loopbacks[chan];  in waveform_ai_insn_read()
435 	struct waveform_private *devpriv = from_timer(devpriv, t, ao_timer);  in waveform_ao_timer()  local
436 	struct comedi_device *dev = devpriv->dev;  in waveform_ao_timer()
446 	scans_since = now - devpriv->ao_last_scan_time;  in waveform_ao_timer()
447 	do_div(scans_since, devpriv->ao_scan_period);  in waveform_ao_timer()
477 				pd = &devpriv->ao_loopbacks[chan];  in waveform_ao_timer()
486 			devpriv->ao_last_scan_time +=  in waveform_ao_timer()
487 				(u64)scans_avail * devpriv->ao_scan_period;  in waveform_ao_timer()
495 		unsigned int time_inc = devpriv->ao_last_scan_time +  in waveform_ao_timer()
496 					devpriv->ao_scan_period - now;  in waveform_ao_timer()
498 		mod_timer(&devpriv->ao_timer,  in waveform_ao_timer()
510 	struct waveform_private *devpriv = dev->private;  in waveform_ao_inttrig_start()  local
519 	devpriv->ao_last_scan_time = ktime_to_us(ktime_get());  in waveform_ao_inttrig_start()
520 	devpriv->ao_timer.expires =  in waveform_ao_inttrig_start()
521 		jiffies + usecs_to_jiffies(devpriv->ao_scan_period);  in waveform_ao_inttrig_start()
522 	add_timer(&devpriv->ao_timer);  in waveform_ao_inttrig_start()
587 	struct waveform_private *devpriv = dev->private;  in waveform_ao_cmd()  local
596 	devpriv->ao_scan_period = cmd->scan_begin_arg / NSEC_PER_USEC;  in waveform_ao_cmd()
604 	struct waveform_private *devpriv = dev->private;  in waveform_ao_cancel()  local
609 		del_timer(&devpriv->ao_timer);  in waveform_ao_cancel()
611 		del_timer_sync(&devpriv->ao_timer);  in waveform_ao_cancel()
620 	struct waveform_private *devpriv = dev->private;  in waveform_ao_insn_write()  local
624 		devpriv->ao_loopbacks[chan] = data[i];  in waveform_ao_insn_write()
674 	struct waveform_private *devpriv;  in waveform_common_attach()  local
679 	devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));  in waveform_common_attach()
680 	if (!devpriv)  in waveform_common_attach()
683 	devpriv->wf_amplitude = amplitude;  in waveform_common_attach()
684 	devpriv->wf_period = period;  in waveform_common_attach()
723 		devpriv->ao_loopbacks[i] = s->maxdata / 2;  in waveform_common_attach()
725 	devpriv->dev = dev;  in waveform_common_attach()
726 	timer_setup(&devpriv->ai_timer, waveform_ai_timer, 0);  in waveform_common_attach()
727 	timer_setup(&devpriv->ao_timer, waveform_ao_timer, 0);  in waveform_common_attach()
732 		 devpriv->wf_amplitude, devpriv->wf_period);  in waveform_common_attach()
769 	struct waveform_private *devpriv = dev->private;  in waveform_detach()  local
771 	if (devpriv) {  in waveform_detach()
772 		del_timer_sync(&devpriv->ai_timer);  in waveform_detach()
773 		del_timer_sync(&devpriv->ao_timer);  in waveform_detach()