diff options
Diffstat (limited to 'drivers/staging/comedi/comedi.h')
| -rw-r--r-- | drivers/staging/comedi/comedi.h | 174 |
1 files changed, 173 insertions, 1 deletions
diff --git a/drivers/staging/comedi/comedi.h b/drivers/staging/comedi/comedi.h index bb961ac79b7e..e90b17775284 100644 --- a/drivers/staging/comedi/comedi.h +++ b/drivers/staging/comedi/comedi.h @@ -107,6 +107,7 @@ #define INSN_WRITE (1 | INSN_MASK_WRITE) #define INSN_BITS (2 | INSN_MASK_READ | INSN_MASK_WRITE) #define INSN_CONFIG (3 | INSN_MASK_READ | INSN_MASK_WRITE) +#define INSN_DEVICE_CONFIG (INSN_CONFIG | INSN_MASK_SPECIAL) #define INSN_GTOD (4 | INSN_MASK_READ | INSN_MASK_SPECIAL) #define INSN_WAIT (5 | INSN_MASK_WRITE | INSN_MASK_SPECIAL) #define INSN_INTTRIG (6 | INSN_MASK_WRITE | INSN_MASK_SPECIAL) @@ -301,6 +302,8 @@ enum comedi_io_direction { * @INSN_CONFIG_PWM_SET_H_BRIDGE: Set PWM H bridge duty cycle and polarity for * a relay simultaneously. * @INSN_CONFIG_PWM_GET_H_BRIDGE: Get PWM H bridge duty cycle and polarity. + * @INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS: Get the hardware timing restraints, + * regardless of trigger sources. */ enum configuration_ids { INSN_CONFIG_DIO_INPUT = COMEDI_INPUT, @@ -344,7 +347,25 @@ enum configuration_ids { INSN_CONFIG_PWM_GET_PERIOD = 5001, INSN_CONFIG_GET_PWM_STATUS = 5002, INSN_CONFIG_PWM_SET_H_BRIDGE = 5003, - INSN_CONFIG_PWM_GET_H_BRIDGE = 5004 + INSN_CONFIG_PWM_GET_H_BRIDGE = 5004, + INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS = 5005, +}; + +/** + * enum device_configuration_ids - COMEDI configuration instruction codes global + * to an entire device. + * @INSN_DEVICE_CONFIG_TEST_ROUTE: Validate the possibility of a + * globally-named route + * @INSN_DEVICE_CONFIG_CONNECT_ROUTE: Connect a globally-named route + * @INSN_DEVICE_CONFIG_DISCONNECT_ROUTE:Disconnect a globally-named route + * @INSN_DEVICE_CONFIG_GET_ROUTES: Get a list of all globally-named routes + * that are valid for a particular device. + */ +enum device_config_route_ids { + INSN_DEVICE_CONFIG_TEST_ROUTE = 0, + INSN_DEVICE_CONFIG_CONNECT_ROUTE = 1, + INSN_DEVICE_CONFIG_DISCONNECT_ROUTE = 2, + INSN_DEVICE_CONFIG_GET_ROUTES = 3, }; /** @@ -928,6 +949,157 @@ enum i8254_mode { I8254_BINARY = 0 }; +/* *** BEGIN GLOBALLY-NAMED NI TERMINALS/SIGNALS *** */ + +/* + * Common National Instruments Terminal/Signal names. + * Some of these have no NI_ prefix as they are useful for non-NI hardware, such + * as those that utilize the PXI/RTSI trigger lines. + * + * NOTE ABOUT THE CHOICE OF NAMES HERE AND THE CAMELSCRIPT: + * The choice to use CamelScript and the exact names below is for + * maintainability, clarity, similarity to manufacturer's documentation, + * _and_ a mitigation for confusion that has plagued the use of these drivers + * for years! + * + * More detail: + * There have been significant confusions over the past many years for users + * when trying to understand how to connect to/from signals and terminals on + * NI hardware using comedi. The major reason for this is that the actual + * register values were exposed and required to be used by users. Several + * major reasons exist why this caused major confusion for users: + * 1) The register values are _NOT_ in user documentation, but rather in + * arcane locations, such as a few register programming manuals that are + * increasingly hard to find and the NI MHDDK (comments in in example code). + * There is no one place to find the various valid values of the registers. + * 2) The register values are _NOT_ completely consistent. There is no way to + * gain any sense of intuition of which values, or even enums one should use + * for various registers. There was some attempt in prior use of comedi to + * name enums such that a user might know which enums should be used for + * varying purposes, but the end-user had to gain a knowledge of register + * values to correctly wield this approach. + * 3) The names for signals and registers found in the various register level + * programming manuals and vendor-provided documentation are _not_ even + * close to the same names that are in the end-user documentation. + * + * Similar, albeit less, confusion plagued NI's previous version of their own + * drivers. Earlier than 2003, NI greatly simplified the situation for users + * by releasing a new API that abstracted the names of signals/terminals to a + * common and intuitive set of names. + * + * The names below mirror the names chosen and well documented by NI. These + * names are exposed to the user via the comedilib user library. By keeping + * the names below, in spite of the use of CamelScript, maintenance will be + * greatly eased and confusion for users _and_ comedi developers will be + * greatly reduced. + */ + +/* + * Base of abstracted NI names. + * The first 16 bits of *_arg are reserved for channel selection. + * Since we only actually need the first 4 or 5 bits for all register values on + * NI select registers anyways, we'll identify all values >= (1<<15) as being an + * abstracted NI signal/terminal name. + * These values are also used/returned by INSN_DEVICE_CONFIG_TEST_ROUTE, + * INSN_DEVICE_CONFIG_CONNECT_ROUTE, INSN_DEVICE_CONFIG_DISCONNECT_ROUTE, + * and INSN_DEVICE_CONFIG_GET_ROUTES. + */ +#define NI_NAMES_BASE 0x8000u +/* + * not necessarily all allowed 64 PFIs are valid--certainly not for all devices + */ +#define NI_PFI(x) (NI_NAMES_BASE + ((x) & 0x3f)) +/* 8 trigger lines by standard, Some devices cannot talk to all eight. */ +#define TRIGGER_LINE(x) (NI_PFI(-1) + 1 + ((x) & 0x7)) +/* 4 RTSI shared MUXes to route signals to/from TRIGGER_LINES on NI hardware */ +#define NI_RTSI_BRD(x) (TRIGGER_LINE(-1) + 1 + ((x) & 0x3)) + +/* *** Counter/timer names : 8 counters max *** */ +#define NI_COUNTER_NAMES_BASE (NI_RTSI_BRD(-1) + 1) +#define NI_MAX_COUNTERS 7 +#define NI_CtrSource(x) (NI_COUNTER_NAMES_BASE + ((x) & NI_MAX_COUNTERS)) +/* Gate, Aux, A,B,Z are all treated, at times as gates */ +#define NI_GATES_NAMES_BASE (NI_CtrSource(-1) + 1) +#define NI_CtrGate(x) (NI_GATES_NAMES_BASE + ((x) & NI_MAX_COUNTERS)) +#define NI_CtrAux(x) (NI_CtrGate(-1) + 1 + ((x) & NI_MAX_COUNTERS)) +#define NI_CtrA(x) (NI_CtrAux(-1) + 1 + ((x) & NI_MAX_COUNTERS)) +#define NI_CtrB(x) (NI_CtrA(-1) + 1 + ((x) & NI_MAX_COUNTERS)) +#define NI_CtrZ(x) (NI_CtrB(-1) + 1 + ((x) & NI_MAX_COUNTERS)) +#define NI_GATES_NAMES_MAX NI_CtrZ(-1) +#define NI_CtrArmStartTrigger(x) (NI_CtrZ(-1) + 1 + ((x) & NI_MAX_COUNTERS)) +#define NI_CtrInternalOutput(x) \ + (NI_CtrArmStartTrigger(-1) + 1 + ((x) & NI_MAX_COUNTERS)) +/** external pin(s) labeled conveniently as Ctr<i>Out. */ +#define NI_CtrOut(x) (NI_CtrInternalOutput(-1) + 1 + ((x) & NI_MAX_COUNTERS)) +/** For Buffered sampling of ctr -- x series capability. */ +#define NI_CtrSampleClock(x) (NI_CtrOut(-1) + 1 + ((x) & NI_MAX_COUNTERS)) +#define NI_COUNTER_NAMES_MAX NI_CtrSampleClock(-1) + +enum ni_common_signal_names { + /* PXI_Star: this is a non-NI-specific signal */ + PXI_Star = NI_COUNTER_NAMES_MAX + 1, + PXI_Clk10, + PXIe_Clk100, + NI_AI_SampleClock, + NI_AI_SampleClockTimebase, + NI_AI_StartTrigger, + NI_AI_ReferenceTrigger, + NI_AI_ConvertClock, + NI_AI_ConvertClockTimebase, + NI_AI_PauseTrigger, + NI_AI_HoldCompleteEvent, + NI_AI_HoldComplete, + NI_AI_ExternalMUXClock, + NI_AI_STOP, /* pulse signal that occurs when a update is finished(?) */ + NI_AO_SampleClock, + NI_AO_SampleClockTimebase, + NI_AO_StartTrigger, + NI_AO_PauseTrigger, + NI_DI_SampleClock, + NI_DI_SampleClockTimebase, + NI_DI_StartTrigger, + NI_DI_ReferenceTrigger, + NI_DI_PauseTrigger, + NI_DI_InputBufferFull, + NI_DI_ReadyForStartEvent, + NI_DI_ReadyForTransferEventBurst, + NI_DI_ReadyForTransferEventPipelined, + NI_DO_SampleClock, + NI_DO_SampleClockTimebase, + NI_DO_StartTrigger, + NI_DO_PauseTrigger, + NI_DO_OutputBufferFull, + NI_DO_DataActiveEvent, + NI_DO_ReadyForStartEvent, + NI_DO_ReadyForTransferEvent, + NI_MasterTimebase, + NI_20MHzTimebase, + NI_80MHzTimebase, + NI_100MHzTimebase, + NI_200MHzTimebase, + NI_100kHzTimebase, + NI_10MHzRefClock, + NI_FrequencyOutput, + NI_ChangeDetectionEvent, + NI_AnalogComparisonEvent, + NI_WatchdogExpiredEvent, + NI_WatchdogExpirationTrigger, + NI_SCXI_Trig1, + NI_LogicLow, + NI_LogicHigh, + NI_ExternalStrobe, + NI_PFI_DO, + NI_CaseGround, + /* special internal signal used as variable source for RTSI bus: */ + NI_RGOUT0, + + /* just a name to make the next more convenient, regardless of above */ + _NI_NAMES_MAX_PLUS_1, + NI_NUM_NAMES = _NI_NAMES_MAX_PLUS_1 - NI_NAMES_BASE, +}; + +/* *** END GLOBALLY-NAMED NI TERMINALS/SIGNALS *** */ + #define NI_USUAL_PFI_SELECT(x) (((x) < 10) ? (0x1 + (x)) : (0xb + (x))) #define NI_USUAL_RTSI_SELECT(x) (((x) < 7) ? (0xb + (x)) : 0x1b) |