diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/comedi_fc.h')
-rw-r--r-- | drivers/staging/comedi/drivers/comedi_fc.h | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/drivers/staging/comedi/drivers/comedi_fc.h b/drivers/staging/comedi/drivers/comedi_fc.h deleted file mode 100644 index 756be93..0000000 --- a/drivers/staging/comedi/drivers/comedi_fc.h +++ /dev/null @@ -1,102 +0,0 @@ -/* - * comedi_fc.h - * This is a place for code driver writers wish to share between - * two or more drivers. These functions are meant to be used only - * by drivers, they are NOT part of the kcomedilib API! - * - * Author: Frank Mori Hess <fmhess@users.sourceforge.net> - * Copyright (C) 2002 Frank Mori Hess - * - * 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. - */ - -#ifndef _COMEDI_FC_H -#define _COMEDI_FC_H - -#include "../comedidev.h" - -/** - * cfc_check_trigger_src() - trivially validate a comedi_cmd trigger source - * @src: pointer to the trigger source to validate - * @flags: bitmask of valid TRIG_* for the trigger - * - * This is used in "step 1" of the do_cmdtest functions of comedi drivers - * to vaildate the comedi_cmd triggers. The mask of the @src against the - * @flags allows the userspace comedilib to pass all the comedi_cmd - * triggers as TRIG_ANY and get back a bitmask of the valid trigger sources. - */ -static inline int cfc_check_trigger_src(unsigned int *src, unsigned int flags) -{ - unsigned int orig_src = *src; - - *src = orig_src & flags; - if (*src == TRIG_INVALID || *src != orig_src) - return -EINVAL; - return 0; -} - -/** - * cfc_check_trigger_is_unique() - make sure a trigger source is unique - * @src: the trigger source to check - */ -static inline int cfc_check_trigger_is_unique(unsigned int src) -{ - /* this test is true if more than one _src bit is set */ - if ((src & (src - 1)) != 0) - return -EINVAL; - return 0; -} - -/** - * cfc_check_trigger_arg_is() - trivially validate a trigger argument - * @arg: pointer to the trigger arg to validate - * @val: the value the argument should be - */ -static inline int cfc_check_trigger_arg_is(unsigned int *arg, unsigned int val) -{ - if (*arg != val) { - *arg = val; - return -EINVAL; - } - return 0; -} - -/** - * cfc_check_trigger_arg_min() - trivially validate a trigger argument - * @arg: pointer to the trigger arg to validate - * @val: the minimum value the argument should be - */ -static inline int cfc_check_trigger_arg_min(unsigned int *arg, - unsigned int val) -{ - if (*arg < val) { - *arg = val; - return -EINVAL; - } - return 0; -} - -/** - * cfc_check_trigger_arg_max() - trivially validate a trigger argument - * @arg: pointer to the trigger arg to validate - * @val: the maximum value the argument should be - */ -static inline int cfc_check_trigger_arg_max(unsigned int *arg, - unsigned int val) -{ - if (*arg > val) { - *arg = val; - return -EINVAL; - } - return 0; -} - -#endif /* _COMEDI_FC_H */ |