diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/comedi_fc.h')
| -rw-r--r-- | drivers/staging/comedi/drivers/comedi_fc.h | 84 |
1 files changed, 32 insertions, 52 deletions
diff --git a/drivers/staging/comedi/drivers/comedi_fc.h b/drivers/staging/comedi/drivers/comedi_fc.h index 8558b07f8df3..541b9371d3da 100644 --- a/drivers/staging/comedi/drivers/comedi_fc.h +++ b/drivers/staging/comedi/drivers/comedi_fc.h @@ -1,72 +1,52 @@ /* - 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. -*/ + * 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" +unsigned int cfc_bytes_per_scan(struct comedi_subdevice *); +void cfc_inc_scan_progress(struct comedi_subdevice *, unsigned int num_bytes); + /* Writes an array of data points to comedi's buffer */ -extern unsigned int cfc_write_array_to_buffer(struct comedi_subdevice *subd, - void *data, - unsigned int num_bytes); +unsigned int cfc_write_array_to_buffer(struct comedi_subdevice *, + void *data, unsigned int num_bytes); -static inline unsigned int cfc_write_to_buffer(struct comedi_subdevice *subd, +static inline unsigned int cfc_write_to_buffer(struct comedi_subdevice *s, unsigned short data) { - return cfc_write_array_to_buffer(subd, &data, sizeof(data)); + return cfc_write_array_to_buffer(s, &data, sizeof(data)); }; -static inline unsigned int cfc_write_long_to_buffer(struct comedi_subdevice - *subd, unsigned int data) +static inline unsigned int cfc_write_long_to_buffer(struct comedi_subdevice *s, + unsigned int data) { - return cfc_write_array_to_buffer(subd, &data, sizeof(data)); + return cfc_write_array_to_buffer(s, &data, sizeof(data)); }; -extern unsigned int cfc_read_array_from_buffer(struct comedi_subdevice *subd, - void *data, - unsigned int num_bytes); +unsigned int cfc_read_array_from_buffer(struct comedi_subdevice *, + void *data, unsigned int num_bytes); -extern unsigned int cfc_handle_events(struct comedi_device *dev, - struct comedi_subdevice *subd); - -static inline unsigned int cfc_bytes_per_scan(struct comedi_subdevice *subd) -{ - int num_samples; - int bits_per_sample; - - switch (subd->type) { - case COMEDI_SUBD_DI: - case COMEDI_SUBD_DO: - case COMEDI_SUBD_DIO: - bits_per_sample = 8 * bytes_per_sample(subd); - num_samples = (subd->async->cmd.chanlist_len + - bits_per_sample - 1) / bits_per_sample; - break; - default: - num_samples = subd->async->cmd.chanlist_len; - break; - } - return num_samples * bytes_per_sample(subd); -} +unsigned int cfc_handle_events(struct comedi_device *, + struct comedi_subdevice *); /** * cfc_check_trigger_src() - trivially validate a comedi_cmd trigger source |