115  * min delay steps for more than one channel
118  * steps at 30MHz in the FX2
123  * max number of 1/30MHz delay steps
355 	unsigned int steps;  in usbduxfast_ai_cmdtest()  local
397 	 * for 1 channel the timing in 30MHz "steps" is:  in usbduxfast_ai_cmdtest()
398 	 *	steps <= MAX_SAMPLING_PERIOD  in usbduxfast_ai_cmdtest()
400 	 *	MIN_SAMPLING_PERIOD <= steps <= MAX_SAMPLING_PERIOD  in usbduxfast_ai_cmdtest()
402 	steps = (cmd->convert_arg * 30) / 1000;  in usbduxfast_ai_cmdtest()
404 		err2 |= comedi_check_trigger_arg_min(&steps,  in usbduxfast_ai_cmdtest()
407 		err2 |= comedi_check_trigger_arg_min(&steps, 1);  in usbduxfast_ai_cmdtest()
408 	err2 |= comedi_check_trigger_arg_max(&steps, MAX_SAMPLING_PERIOD);  in usbduxfast_ai_cmdtest()
411 		arg = (steps * 1000) / 30;  in usbduxfast_ai_cmdtest()
471 	long steps, steps_tmp;  in usbduxfast_ai_cmd()  local
485 	steps = (cmd->convert_arg * 30) / 1000;  in usbduxfast_ai_cmd()
513 		if (steps < MIN_SAMPLING_PERIOD) {  in usbduxfast_ai_cmd()
515 			if (steps <= 1) {  in usbduxfast_ai_cmd()
534 				usbduxfast_cmd_data(dev, 1, steps - 1,  in usbduxfast_ai_cmd()
550 			steps = steps - 1;  in usbduxfast_ai_cmd()
554 					    steps / 2, 0x00, rngmask, 0x00);  in usbduxfast_ai_cmd()
557 			usbduxfast_cmd_data(dev, 2, steps - steps / 2,  in usbduxfast_ai_cmd()
585 		steps_tmp = steps - 1;  in usbduxfast_ai_cmd()
608 		steps_tmp = steps - 2;  in usbduxfast_ai_cmd()
644 			usbduxfast_cmd_data(dev, index, steps / 2,  in usbduxfast_ai_cmd()
655 			usbduxfast_cmd_data(dev, index + 1, steps - steps / 2,  in usbduxfast_ai_cmd()
659 		/* 2 steps with duration 1: the idele step and step 6: */  in usbduxfast_ai_cmd()
660 		steps_tmp = steps - 2;  in usbduxfast_ai_cmd()
714 		steps = steps - 2;  in usbduxfast_ai_cmd()
717 		usbduxfast_cmd_data(dev, 2, steps / 2,  in usbduxfast_ai_cmd()
721 		usbduxfast_cmd_data(dev, 3, steps - steps / 2,  in usbduxfast_ai_cmd()