ebedb5ad97
- don't include <sys/ioctl.h> in any header. Include <sys/ioccom.h> instead. This was already done in 4.4Lite for the most important ioctl headers. Header spam currently increases kernel build times by 10-20%. There are more than 30000 #includes (not counting duplicates) for compiling LINT. - include <sys/types.h> if and only it is necessary to make the header almost self-sufficient (some ioctl headers still need structs from elsewhere). - uniformized idempotency ifdefs. Copied the style in the 4.4Lite ioctl headers.
35 lines
1.0 KiB
C
35 lines
1.0 KiB
C
/* Header for general data acquisition definitions.
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*/
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#ifndef _SYS_DATAACQ_H_
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#define _SYS_DATAACQ_H_
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#include <sys/ioccom.h>
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/* Period in microseconds between analog I/O samples.
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*/
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#define AD_MICRO_PERIOD_SET _IOW('A', 1, long)
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#define AD_MICRO_PERIOD_GET _IOR('A', 2, long)
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/* Gain list support. Initially all gains are 1. If the board
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* supports no gains at all then AD_NGAINS_GET will return a 0.
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*
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* AD_NGAINS_GET: Return the number of gains the board supports
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*
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* AD_SUPPORTED_GAINS: Get the supported gains.
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* The driver will copy out "ngains" doubles,
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* where "ngains" is obtained with AD_NGAINS_GET.
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*
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* AD_GAINS_SET: Set the gain list. The driver will copy in "ngains" ints.
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*
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* AD_GAINS_GET: Get the gain list. The driver will copy out "ngains" ints.
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*/
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#define AD_NGAINS_GET _IOR('A', 3, int)
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#define AD_NCHANS_GET _IOR('A', 4, int)
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#define AD_SUPPORTED_GAINS _IO('A', 5)
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#define AD_GAINS_SET _IO('A', 6)
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#define AD_GAINS_GET _IO('A', 7)
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#endif /* !_SYS_DATAACQ_H_ */
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