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#include "../comedidev.h"
#include "comedi_fc.h"
#include "pcm_common.h"
int comedi_pcm_cmdtest(struct comedi_device *dev,
struct comedi_subdevice *s, struct comedi_cmd *cmd)
{
int err = 0;
/* Step 1 : check if triggers are trivially valid */
err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_INT);
err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_EXT);
err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_NOW);
err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
if (err)
return 1;
/* Step 2a : make sure trigger sources are unique */
err |= cfc_check_trigger_is_unique(cmd->start_src);
err |= cfc_check_trigger_is_unique(cmd->stop_src);
/* Step 2b : and mutually compatible */
if (err)
return 2;
/* Step 3: check if arguments are trivially valid */
err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0);
err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
switch (cmd->stop_src) {
case TRIG_COUNT:
/* any count allowed */
break;
case TRIG_NONE:
err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
break;
default:
break;
}
if (err)
return 3;
/* step 4: fix up any arguments */
/* if (err) return 4; */
return 0;
}
EXPORT_SYMBOL(comedi_pcm_cmdtest);
MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
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