diff options
Diffstat (limited to 'drivers/staging/comedi/comedi.h')
| -rw-r--r-- | drivers/staging/comedi/comedi.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/staging/comedi/comedi.h b/drivers/staging/comedi/comedi.h index 3cbd2cd..c8a8ca1 100644 --- a/drivers/staging/comedi/comedi.h +++ b/drivers/staging/comedi/comedi.h @@ -283,6 +283,44 @@ enum configuration_ids { INSN_CONFIG_PWM_GET_H_BRIDGE = 5004 }; +/* + * Settings for INSN_CONFIG_DIGITAL_TRIG: + * data[0] = INSN_CONFIG_DIGITAL_TRIG + * data[1] = trigger ID + * data[2] = configuration operation + * data[3] = configuration parameter 1 + * data[4] = configuration parameter 2 + * data[5] = configuration parameter 3 + * + * operation parameter 1 parameter 2 parameter 3 + * --------------------------------- ----------- ----------- ----------- + * COMEDI_DIGITAL_TRIG_DISABLE + * COMEDI_DIGITAL_TRIG_ENABLE_EDGES left-shift rising-edges falling-edges + * COMEDI_DIGITAL_TRIG_ENABLE_LEVELS left-shift high-levels low-levels + * + * COMEDI_DIGITAL_TRIG_DISABLE returns the trigger to its default, inactive, + * unconfigured state. + * + * COMEDI_DIGITAL_TRIG_ENABLE_EDGES sets the rising and/or falling edge inputs + * that each can fire the trigger. + * + * COMEDI_DIGITAL_TRIG_ENABLE_LEVELS sets a combination of high and/or low + * level inputs that can fire the trigger. + * + * "left-shift" is useful if the trigger has more than 32 inputs to specify the + * first input for this configuration. + * + * Some sequences of INSN_CONFIG_DIGITAL_TRIG instructions may have a (partly) + * accumulative effect, depending on the low-level driver. This is useful + * when setting up a trigger that has more than 32 inputs or has a combination + * of edge and level triggered inputs. + */ +enum comedi_digital_trig_op { + COMEDI_DIGITAL_TRIG_DISABLE = 0, + COMEDI_DIGITAL_TRIG_ENABLE_EDGES = 1, + COMEDI_DIGITAL_TRIG_ENABLE_LEVELS = 2 +}; + enum comedi_io_direction { COMEDI_INPUT = 0, COMEDI_OUTPUT = 1, |