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11 Commits

Author SHA1 Message Date
Pedro F. Giffuni
255eff3b0d sys/arm: Minor spelling fixes. 
Only affects comments: no functional change.
 2016-05-04 15:48:59 +00:00
Luiz Otavio O Souza
7836352b50 Implement GPIO_GET_BUS() method for all GPIO drivers. 
Add helper routines to deal with attach and detach of gpiobus and gpioc
devices that are common to all drivers.
 2015-01-31 19:32:14 +00:00
Luiz Otavio O Souza
c67d5d66bf Rename the avila, cambria and zynq GPIO driver names to match the expected 
string.

With this change it is not necessary redeclare the driver relations with
gpiobus and gpioc.

This also prevents redundant declarations when gpiobusvar.h is included
(which is going to happen soon).
 2015-01-29 18:08:50 +00:00
Luiz Otavio O Souza
667357dc9b Moves all the duplicate code to a single function. 
Verify for invalid modes and unwanted flags before pass the new flags to
driver.
 2014-11-18 17:22:08 +00:00
Luiz Otavio O Souza
8839e0e9f3 Make the GPIO children attach to the first unit available and not only to 
unit 0.

It seems that this 'simplification' was copied to all GPIO drivers in tree.

This fix a bug where a GPIO controller could fail to attach its children
(gpioc and gpiobus) if another GPIO driver attach first.
 2014-10-28 18:33:59 +00:00
Dimitry Andric
27e644a80b Fix undefined behaviour in several gpio_pin_setflags() routines (under 
sys/arm and sys/mips), squelching the clang 3.3 warnings about this.

Noticed by:	tinderbox and many irate spectators
Submitted by:	Luiz Otavio O Souza <loos.br@gmail.com>
PR:		kern/177759
MFC after:	3 days
 2013-04-13 21:21:13 +00:00
Rui Paulo
8c09f7b626 The GPIO drivers were initialising their mutexes with type of 
MTX_NETWORK_LOCK. This is wrong since these mutexes have nothing to do
with networking.
 2012-08-17 04:44:57 +00:00
Andrew Thompson
3cd6db794c Name these gpio pins better, they are on an external PLD and not the same as 
the cpu wired gpio.
 2011-10-12 20:58:54 +00:00
Andrew Thompson
bbdb7f2f2e Dont just set the pin high when turning on output, use the current value. Also 
let this value be set when in input mode.
 2011-10-12 20:57:21 +00:00
Andrew Thompson
a0ba8fd51c Provide a mutex around the read/modify/write of the IXP425_GPIO_* 
registers. Giant was used in some places, but not all.
 2010-11-14 20:41:22 +00:00
Andrew Thompson
54873b4cd6 Add a GPIO driver for the Gateworks Cambria platform. 
The external gpio pins are connected to a PLD on the i2c bus, unfortunatley
this device does not conform by failing to send an ack after each byte written.
The iicbb driver will abort the transfer when the address is not ack'd and it
would introduce a lot of churn to be able to pass a flag down to
iicbb_start/iicbb_write. Instead we do bad things by grabbing the iicbus but
then doing our own bit banging.
 2010-11-11 20:18:33 +00:00