diff options
Diffstat (limited to 'drivers/comedi/drivers/ni_tio.h')
| -rw-r--r-- | drivers/comedi/drivers/ni_tio.h | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/drivers/comedi/drivers/ni_tio.h b/drivers/comedi/drivers/ni_tio.h new file mode 100644 index 000000000000..e7b05718df9b --- /dev/null +++ b/drivers/comedi/drivers/ni_tio.h @@ -0,0 +1,181 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Header file for NI general purpose counter support code (ni_tio.c) + * + * COMEDI - Linux Control and Measurement Device Interface + */ + +#ifndef _COMEDI_NI_TIO_H +#define _COMEDI_NI_TIO_H + +#include "../comedidev.h" + +enum ni_gpct_register { + NITIO_G0_AUTO_INC, + NITIO_G1_AUTO_INC, + NITIO_G2_AUTO_INC, + NITIO_G3_AUTO_INC, + NITIO_G0_CMD, + NITIO_G1_CMD, + NITIO_G2_CMD, + NITIO_G3_CMD, + NITIO_G0_HW_SAVE, + NITIO_G1_HW_SAVE, + NITIO_G2_HW_SAVE, + NITIO_G3_HW_SAVE, + NITIO_G0_SW_SAVE, + NITIO_G1_SW_SAVE, + NITIO_G2_SW_SAVE, + NITIO_G3_SW_SAVE, + NITIO_G0_MODE, + NITIO_G1_MODE, + NITIO_G2_MODE, + NITIO_G3_MODE, + NITIO_G0_LOADA, + NITIO_G1_LOADA, + NITIO_G2_LOADA, + NITIO_G3_LOADA, + NITIO_G0_LOADB, + NITIO_G1_LOADB, + NITIO_G2_LOADB, + NITIO_G3_LOADB, + NITIO_G0_INPUT_SEL, + NITIO_G1_INPUT_SEL, + NITIO_G2_INPUT_SEL, + NITIO_G3_INPUT_SEL, + NITIO_G0_CNT_MODE, + NITIO_G1_CNT_MODE, + NITIO_G2_CNT_MODE, + NITIO_G3_CNT_MODE, + NITIO_G0_GATE2, + NITIO_G1_GATE2, + NITIO_G2_GATE2, + NITIO_G3_GATE2, + NITIO_G01_STATUS, + NITIO_G23_STATUS, + NITIO_G01_RESET, + NITIO_G23_RESET, + NITIO_G01_STATUS1, + NITIO_G23_STATUS1, + NITIO_G01_STATUS2, + NITIO_G23_STATUS2, + NITIO_G0_DMA_CFG, + NITIO_G1_DMA_CFG, + NITIO_G2_DMA_CFG, + NITIO_G3_DMA_CFG, + NITIO_G0_DMA_STATUS, + NITIO_G1_DMA_STATUS, + NITIO_G2_DMA_STATUS, + NITIO_G3_DMA_STATUS, + NITIO_G0_ABZ, + NITIO_G1_ABZ, + NITIO_G0_INT_ACK, + NITIO_G1_INT_ACK, + NITIO_G2_INT_ACK, + NITIO_G3_INT_ACK, + NITIO_G0_STATUS, + NITIO_G1_STATUS, + NITIO_G2_STATUS, + NITIO_G3_STATUS, + NITIO_G0_INT_ENA, + NITIO_G1_INT_ENA, + NITIO_G2_INT_ENA, + NITIO_G3_INT_ENA, + NITIO_NUM_REGS, +}; + +enum ni_gpct_variant { + ni_gpct_variant_e_series, + ni_gpct_variant_m_series, + ni_gpct_variant_660x +}; + +struct ni_gpct { + struct ni_gpct_device *counter_dev; + unsigned int counter_index; + unsigned int chip_index; + u64 clock_period_ps; /* clock period in picoseconds */ + struct mite_channel *mite_chan; + spinlock_t lock; /* protects 'mite_chan' */ +}; + +struct ni_gpct_device { + struct comedi_device *dev; + void (*write)(struct ni_gpct *counter, unsigned int value, + enum ni_gpct_register); + unsigned int (*read)(struct ni_gpct *counter, enum ni_gpct_register); + enum ni_gpct_variant variant; + struct ni_gpct *counters; + unsigned int num_counters; + unsigned int num_chips; + unsigned int (*regs)[NITIO_NUM_REGS]; /* [num_chips][NITIO_NUM_REGS] */ + spinlock_t regs_lock; /* protects 'regs' */ + const struct ni_route_tables *routing_tables; /* link to routes */ +}; + +struct ni_gpct_device * +ni_gpct_device_construct(struct comedi_device *dev, + void (*write)(struct ni_gpct *counter, + unsigned int value, + enum ni_gpct_register), + unsigned int (*read)(struct ni_gpct *counter, + enum ni_gpct_register), + enum ni_gpct_variant, + 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, + struct comedi_insn *insn, unsigned int *data); +int ni_tio_insn_config(struct comedi_device *dev, struct comedi_subdevice *s, + struct comedi_insn *insn, unsigned int *data); +int ni_tio_insn_write(struct comedi_device *dev, struct comedi_subdevice *s, + struct comedi_insn *insn, unsigned int *data); +int ni_tio_cmd(struct comedi_device *dev, struct comedi_subdevice *s); +int ni_tio_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, + struct comedi_cmd *cmd); +int ni_tio_cancel(struct ni_gpct *counter); +void ni_tio_handle_interrupt(struct ni_gpct *counter, + struct comedi_subdevice *s); +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 */ |