diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/ni_tio.h')
| -rw-r--r-- | drivers/staging/comedi/drivers/ni_tio.h | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/drivers/staging/comedi/drivers/ni_tio.h b/drivers/staging/comedi/drivers/ni_tio.h index 23221cead8ca..340d63c74467 100644 --- a/drivers/staging/comedi/drivers/ni_tio.h +++ b/drivers/staging/comedi/drivers/ni_tio.h @@ -107,8 +107,10 @@ struct ni_gpct_device { enum ni_gpct_variant variant; struct ni_gpct *counters; unsigned int num_counters; + unsigned int counters_per_chip; unsigned int regs[NITIO_NUM_REGS]; spinlock_t regs_lock; /* protects 'regs' */ + const struct ni_route_tables *routing_tables; /* link to routes */ }; struct ni_gpct_device * @@ -119,7 +121,9 @@ ni_gpct_device_construct(struct comedi_device *dev, unsigned int (*read)(struct ni_gpct *counter, enum ni_gpct_register), enum ni_gpct_variant, - unsigned int num_counters); + unsigned int num_counters, + unsigned int counters_per_chip, + const struct ni_route_tables *routing_tables); void ni_gpct_device_destroy(struct ni_gpct_device *counter_dev); void ni_tio_init_counter(struct ni_gpct *counter); int ni_tio_insn_read(struct comedi_device *dev, struct comedi_subdevice *s, @@ -138,4 +142,40 @@ void ni_tio_set_mite_channel(struct ni_gpct *counter, struct mite_channel *mite_chan); void ni_tio_acknowledge(struct ni_gpct *counter); +/* + * Retrieves the register value of the current source of the output selector for + * the given destination. + * + * If the terminal for the destination is not already configured as an output, + * this function returns -EINVAL as error. + * + * Return: the register value of the destination output selector; + * -EINVAL if terminal is not configured for output. + */ +int ni_tio_get_routing(struct ni_gpct_device *counter_dev, + unsigned int destination); + +/* + * Sets the register value of the selector MUX for the given destination. + * @counter_dev:Pointer to general counter device. + * @destination:Device-global identifier of route destination. + * @register_value: + * The first several bits of this value should store the desired + * value to write to the register. All other bits are for + * transmitting information that modify the mode of the particular + * destination/gate. These mode bits might include a bitwise or of + * CR_INVERT and CR_EDGE. Note that the calling function should + * have already validated the correctness of this value. + */ +int ni_tio_set_routing(struct ni_gpct_device *counter_dev, + unsigned int destination, unsigned int register_value); + +/* + * Sets the given destination MUX to its default value or disable it. + * + * Return: 0 if successful; -EINVAL if terminal is unknown. + */ +int ni_tio_unset_routing(struct ni_gpct_device *counter_dev, + unsigned int destination); + #endif /* _COMEDI_NI_TIO_H */ |