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author | Anton Vorontsov <cbouatmailru@gmail.com> | 2010-10-27 15:33:15 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-27 18:03:06 -0700 |
commit | aeec56e331c6d2750de02ef34b305338305ca690 (patch) | |
tree | 1a9df159e4408cf1f4d9ab8451ae803de6007126 /include | |
parent | d0f744c8cbd19a8d07eccb15bb08e6a29c4d5192 (diff) | |
download | linux-stable-aeec56e331c6d2750de02ef34b305338305ca690.tar.gz linux-stable-aeec56e331c6d2750de02ef34b305338305ca690.tar.bz2 linux-stable-aeec56e331c6d2750de02ef34b305338305ca690.zip |
gpio: add driver for basic memory-mapped GPIO controllers
The basic GPIO controllers may be found in various on-board FPGA and ASIC
solutions that are used to control board's switches, LEDs, chip-selects,
Ethernet/USB PHY power, etc.
These controllers may not provide any means of pin setup
(in/out/open drain).
The driver supports:
- 8/16/32/64 bits registers;
- GPIO controllers with clear/set registers;
- GPIO controllers with a single "data" register;
- Big endian bits/GPIOs ordering (mostly used on PowerPC).
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Samuel Ortiz <sameo@linux.intel.com>,
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
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/basic_mmio_gpio.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/basic_mmio_gpio.h b/include/linux/basic_mmio_gpio.h new file mode 100644 index 000000000000..198087a16fc4 --- /dev/null +++ b/include/linux/basic_mmio_gpio.h @@ -0,0 +1,20 @@ +/* + * Basic memory-mapped GPIO controllers. + * + * Copyright 2008 MontaVista Software, Inc. + * Copyright 2008,2010 Anton Vorontsov <cbouatmailru@gmail.com> + * + * 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. + */ + +#ifndef __BASIC_MMIO_GPIO_H +#define __BASIC_MMIO_GPIO_H + +struct bgpio_pdata { + int base; +}; + +#endif /* __BASIC_MMIO_GPIO_H */ |