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Diffstat (limited to 'include/aiodev.h')
| -rw-r--r-- | include/aiodev.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/include/aiodev.h b/include/aiodev.h new file mode 100644 index 0000000000..0d4f7a2940 --- /dev/null +++ b/include/aiodev.h @@ -0,0 +1,59 @@ +/* + * core.c - Code implementing core functionality of AIODEV susbsystem + * + * Copyright (c) 2015 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix + * Copyright (c) 2015 Zodiac Inflight Innovation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * 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 __AIODEVICE_H +#define __AIODEVICE_H + +struct aiodevice; +struct aiochannel { + int index; + char *unit; + struct aiodevice *aiodev; + + int value; + char *name; +}; + +struct aiodevice { + const char *name; + int (*read)(struct aiochannel *, int *val); + struct device_d dev; + struct device_d *hwdev; + struct aiochannel **channels; + int num_channels; + struct list_head list; +}; + +int aiodevice_register(struct aiodevice *aiodev); + +struct aiochannel *aiochannel_get(struct device_d *dev, int index); +struct aiochannel *aiochannel_get_by_name(const char *name); + +int aiochannel_get_value(struct aiochannel *aiochan, int *value); +int aiochannel_get_index(struct aiochannel *aiochan); + +static inline const char *aiochannel_get_unit(struct aiochannel *aiochan) +{ + return aiochan->unit; +} + +extern struct list_head aiodevices; +#define for_each_aiodevice(aiodevice) list_for_each_entry(aiodevice, &aiodevices, list) + +#endif |