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| author | Simon Guinot <simon.guinot@sequanux.org> | 2013-08-30 00:56:56 +0400 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2013-08-30 11:25:52 +0400 |
| commit | 6c17aa0138a6c55364936bbaa35846e09a4db53b (patch) | |
| tree | ddbe02fbee48e5cc0f058e9cda30a1c659e1df59 /arch/arm/mach-bcm/bcm_kona_smc.c | |
| parent | c6641da12e0f5516b75386dccedf163bbfeaabe0 (diff) | |
| download | linux-6c17aa0138a6c55364936bbaa35846e09a4db53b.tar.xz | |
gpio: add GPIO support for F71882FG and F71889F
This patch adds support for the GPIOs found on the Fintek super-I/O
chips F71882FG and F71889F.
A super-I/O is a legacy I/O controller embedded on x86 motherboards. It
is used to connect the low-bandwidth devices. Among others functions the
F71882FG/F71889F provides: a parallel port, two serial ports, a keyboard
controller, an hardware monitoring controller and some GPIO pins.
Note that this super-I/Os are embedded on some Atom-based LaCie NASes.
The GPIOs are used to control the LEDs and the hard drive power.
Changes since v3:
- Use request_muxed_region to protect the I/O ports against concurrent
accesses.
Changes since v2:
- Remove useless NULL setters for driver data.
Changes since v1:
- Enhance the commit message by describing what is a Super-I/O.
- Use self-explanatory names for the GPIO register macros.
- Add a comment to explain the platform device and driver registration.
- Fix gpio_get when GPIO is configured in input mode. I only had
the hardware to check this mode recently...
Signed-off-by: Simon Guinot <simon.guinot@sequanux.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/mach-bcm/bcm_kona_smc.c')
0 files changed, 0 insertions, 0 deletions