/*
- comedi/drivers/ni_tiocmd.c
- Command support for NI general purpose counters
-
- Copyright (C) 2006 Frank Mori Hess <fmhess@users.sourceforge.net>
-
- This program 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 of the License, or
- (at your option) any later version.
-
- This program 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.
-*/
+ * Command support for NI general purpose counters
+ *
+ * Copyright (C) 2006 Frank Mori Hess <fmhess@users.sourceforge.net>
+ *
+ * This program 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 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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.
+ */
/*
* Module: ni_tiocmd
* DAQ 660x Register-Level Programmer Manual (NI 370505A-01)
* DAQ 6601/6602 User Manual (NI 322137B-01)
* 340934b.pdf DAQ-STC reference manual
+ *
+ * TODO: Support use of both banks X and Y
*/
-/*
-TODO:
- Support use of both banks X and Y
-*/
-
#include <linux/module.h>
#include "ni_tio_internal.h"
#include "mite.h"
}
EXPORT_SYMBOL_GPL(ni_tio_cancel);
- /* During buffered input counter operation for e-series, the gate
- interrupt is acked automatically by the dma controller, due to the
- Gi_Read/Write_Acknowledges_IRQ bits in the input select register. */
static int should_ack_gate(struct ni_gpct *counter)
{
unsigned long flags;
switch (counter->counter_dev->variant) {
case ni_gpct_variant_m_series:
- /* not sure if 660x really supports gate
- interrupts (the bits are not listed
- in register-level manual) */
case ni_gpct_variant_660x:
+ /*
+ * not sure if 660x really supports gate interrupts
+ * (the bits are not listed in register-level manual)
+ */
return 1;
case ni_gpct_variant_e_series:
+ /*
+ * During buffered input counter operation for e-series,
+ * the gate interrupt is acked automatically by the dma
+ * controller, due to the Gi_Read/Write_Acknowledges_IRQ
+ * bits in the input select register.
+ */
spin_lock_irqsave(&counter->lock, flags);
{
if (!counter->mite_chan ||
if (gxx_status & GI_GATE_ERROR(cidx)) {
ack |= GI_GATE_ERROR_CONFIRM(cidx);
if (gate_error) {
- /*660x don't support automatic acknowledgment
- of gate interrupt via dma read/write
- and report bogus gate errors */
+ /*
+ * 660x don't support automatic acknowledgment
+ * of gate interrupt via dma read/write
+ * and report bogus gate errors
+ */
if (counter->counter_dev->variant !=
ni_gpct_variant_660x)
*gate_error = 1;