diff options
| author | merge <null@invalid> | 2009-01-22 13:55:32 +0000 |
|---|---|---|
| committer | Andy Green <agreen@octopus.localdomain> | 2009-01-22 13:55:32 +0000 |
| commit | aa6f5ffbdba45aa8e19e5048648fc6c7b25376d3 (patch) | |
| tree | fbb786d0ac6f8a774fd834e9ce951197e60fbffa /drivers/staging/comedi/kcomedilib/dio.c | |
| parent | f2d78193eae5dccd3d588d2c8ea0866efc368332 (diff) | |
MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141
pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141 / fdf777a63bcb59e0dfd78bfe2c6242e01f6d4eb9 ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040
stable-tracking-hist top was MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 / 90463bfd2d5a3c8b52f6e6d71024a00e052b0ced ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-mokopatches-tracking-hist-fix-stray-endmenu-patch
mokopatches-tracking-hist top was fix-stray-endmenu-patch / 3630e0be570de8057e7f8d2fe501ed353cdf34e6 ... parent commitmessage:
From: Andy Green <andy@openmoko.com>
fix-stray-endmenu.patch
Signed-off-by: Andy Green <andy@openmoko.com>
Diffstat (limited to 'drivers/staging/comedi/kcomedilib/dio.c')
| -rw-r--r-- | drivers/staging/comedi/kcomedilib/dio.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/drivers/staging/comedi/kcomedilib/dio.c b/drivers/staging/comedi/kcomedilib/dio.c new file mode 100644 index 00000000000..a9f488aed36 --- /dev/null +++ b/drivers/staging/comedi/kcomedilib/dio.c @@ -0,0 +1,95 @@ +/* + kcomedilib/dio.c + implements comedi_dio_*() functions + + COMEDI - Linux Control and Measurement Device Interface + Copyright (C) 2000 David A. Schleef <ds@schleef.org> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +*/ + +#include "../comedi.h" +#include "../comedilib.h" + +#include <linux/string.h> + +int comedi_dio_config(comedi_t * dev, unsigned int subdev, unsigned int chan, + unsigned int io) +{ + comedi_insn insn; + + memset(&insn, 0, sizeof(insn)); + insn.insn = INSN_CONFIG; + insn.n = 1; + insn.data = &io; + insn.subdev = subdev; + insn.chanspec = CR_PACK(chan, 0, 0); + + return comedi_do_insn(dev, &insn); +} + +int comedi_dio_read(comedi_t * dev, unsigned int subdev, unsigned int chan, + unsigned int *val) +{ + comedi_insn insn; + + memset(&insn, 0, sizeof(insn)); + insn.insn = INSN_READ; + insn.n = 1; + insn.data = val; + insn.subdev = subdev; + insn.chanspec = CR_PACK(chan, 0, 0); + + return comedi_do_insn(dev, &insn); +} + +int comedi_dio_write(comedi_t * dev, unsigned int subdev, unsigned int chan, + unsigned int val) +{ + comedi_insn insn; + + memset(&insn, 0, sizeof(insn)); + insn.insn = INSN_WRITE; + insn.n = 1; + insn.data = &val; + insn.subdev = subdev; + insn.chanspec = CR_PACK(chan, 0, 0); + + return comedi_do_insn(dev, &insn); +} + +int comedi_dio_bitfield(comedi_t * dev, unsigned int subdev, unsigned int mask, + unsigned int *bits) +{ + comedi_insn insn; + lsampl_t data[2]; + int ret; + + memset(&insn, 0, sizeof(insn)); + insn.insn = INSN_BITS; + insn.n = 2; + insn.data = data; + insn.subdev = subdev; + + data[0] = mask; + data[1] = *bits; + + ret = comedi_do_insn(dev, &insn); + + *bits = data[1]; + + return ret; +} |