diff options
| author | Ville Syrjala <syrjala@sci.fi> | 2008-02-06 01:39:01 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-06 10:41:15 -0800 |
| commit | ad8dc96e3b2c3e28854e0de4ab49351ed547b30c (patch) | |
| tree | 6faab05e76206f130333ccff4c080600ed00d332 /include | |
| parent | 4cdf854f7d60498bbda436068a118b95059b244b (diff) | |
w1-gpio: add GPIO w1 bus master driver
Add a GPIO 1-wire bus master driver. The driver used the GPIO API to
control the wire and the GPIO pin can be specified using platform data
similar to i2c-gpio. The driver was tested with AT91SAM9260 + DS2401.
Signed-off-by: Ville Syrjala <syrjala@sci.fi>
Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/w1-gpio.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/w1-gpio.h b/include/linux/w1-gpio.h new file mode 100644 index 00000000000..9797fec7748 --- /dev/null +++ b/include/linux/w1-gpio.h @@ -0,0 +1,23 @@ +/* + * w1-gpio interface to platform code + * + * Copyright (C) 2007 Ville Syrjala <syrjala@sci.fi> + * + * 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. + */ +#ifndef _LINUX_W1_GPIO_H +#define _LINUX_W1_GPIO_H + +/** + * struct w1_gpio_platform_data - Platform-dependent data for w1-gpio + * @pin: GPIO pin to use + * @is_open_drain: GPIO pin is configured as open drain + */ +struct w1_gpio_platform_data { + unsigned int pin; + unsigned int is_open_drain:1; +}; + +#endif /* _LINUX_W1_GPIO_H */ |