linux.git/drivers/bcma/driver_gpio.c, branch v3.17

bcma: gpio: register all 32 GPIOs on BCM53572

2014-06-19T19:49:15+00:00

I've here a device detected as:
bcma: bus0: Found chip with id 0xD144, rev 0x01 and package 0x08
I couldn't find GPIO handling hw button until trying GPIO 20. It seems
BCM53572 also has 32 GPIOs.

Signed-off-by: Rafał Miłecki 
Signed-off-by: John W. Linville

bcma: gpio: register 32 GPIOs on BCM5357

2014-03-27T18:20:04+00:00

Some Broadcom boards have more GPIOs available. For example Linksys
E3200 home router is based on SoC id 0x5357, package 0x0A and uses GPIO
23 to reset internal USB WiFi (gpio23=wombo_reset).

Signed-off-by: Rafał Miłecki 
Signed-off-by: John W. Linville

bcma: gpio: don't cast u32 to unsigned long

2014-01-24T21:39:54+00:00

Signed-off-by: Rafał Miłecki 
Signed-off-by: John Crispin 
Patchwork: http://patchwork.linux-mips.org/patch/6343/

bcma: prevent irq handler from firing when registered

2014-01-24T21:39:52+00:00

With this patch we prevent the irq from being fired when it is
registered. The Hardware fires an IRQ when input signal XOR polarity
AND gpio mask is 1. Now we are setting polarity to a vlaue so that is
is 0 when we register it.

In addition we also set the irq mask register to 0 when the irq handler
is initialized, so all gpio irqs are masked and there will be no
unexpected irq.

Signed-off-by: Hauke Mehrtens 
Tested-by: Rafał Miłecki 
Signed-off-by: John Crispin 
Patchwork: http://patchwork.linux-mips.org/patch/6304/

bcma: gpio: add own IRQ domain

2014-01-23T12:02:37+00:00

Input GPIO changes can generate interrupts, but we need kind of ACK for
them by changing IRQ polarity. This is required to stop hardware from
keep generating interrupts and generate another one on the next GPIO
state change.
This code allows using GPIOs with standard interrupts and add for
example GPIO buttons support.

Signed-off-by: Rafał Miłecki 
Acked-by: Hauke Mehrtens 
Signed-off-by: John Crispin 
Patchwork: http://patchwork.linux-mips.org/patch/6216/

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2013-02-08T23:02:14+00:00

Synchronize with 'net' in order to sort out some l2tp, wireless, and
ipv6 GRE fixes that will be built on top of in 'net-next'.

Signed-off-by: David S. Miller

bcma: unregister gpios before unloading bcma

2013-02-04T21:46:24+00:00

This patch unregisters the gpio chip before bcma gets unloaded.

Signed-off-by: Hauke Mehrtens 
Reported-by: Piotr Haber 
Signed-off-by: John W. Linville

bcma: add gpio_to_irq

2013-01-30T20:07:06+00:00

The old bcm47xx gpio code had support for gpio_to_irq, but the new
code did not provide this function, but returned -ENXIO all the time.
This patch adds the missing function.

Signed-off-by: Hauke Mehrtens 
Signed-off-by: John W. Linville

bcma: add GPIO driver

2012-11-21T20:55:52+00:00

Register a GPIO driver to access the GPIOs provided by the chip.
The GPIOs of the SoC should always start at 0 and the other GPIOs could
start at a random position. There is just one SoC in a system and when
they start at 0 the number is predictable.

Signed-off-by: Hauke Mehrtens 
Patchwork: http://patchwork.linux-mips.org/patch/4587
Acked-by: Florian Fainelli