[PATCH] gpio: Add designware gpio controller support

[Sebastian Hesselbarth]

On 10/17/2013 10:04 AM, Steffen Trumtrar wrote:
> On Mon, Sep 09, 2013 at 06:28:48PM +0200, Sebastian Hesselbarth wrote:
>> On 09/09/13 16:54, Sascha Hauer wrote:
>>> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
>>> ---
>>>   drivers/gpio/Kconfig   |   6 ++
>>>   drivers/gpio/Makefile  |   1 +
>>>   drivers/gpio/gpio-dw.c | 151 +++++++++++++++++++++++++++++++++++++++++++++++++
>>>   3 files changed, 158 insertions(+)
>>>   create mode 100644 drivers/gpio/gpio-dw.c
>>>
>>> diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
>>> index d5ac532..18d3135 100644
>>> --- a/drivers/gpio/Kconfig
>>> +++ b/drivers/gpio/Kconfig
>>> @@ -54,6 +54,12 @@ config GPIO_TEGRA
>>>   	help
>>>   	  Say yes here to include the driver for the GPIO controller found on the
>>>   	  Tegra line of SoCs.
>>> +
>>> +config GPIO_DESIGNWARE
>>> +	tristate "Synopsys DesignWare GPIO driver"
>>
>> Sascha,
>>
>> I know DW's GPIO is also used on Armada 1500 which I currently work on.
>> Precisely, the IP is named dw-apb-gpio. Maybe the above should also
>> reflect APB.
>>
>> [...]
>>
>> Please add "snps,dw-apb-gpio", that's what the linux driver
>> will look for if make to pick it up for Armada 1500.
>>
>
> Are you talking about the 'old' linux driver that was posted sometime around
> January 2012 or are you working on your own?

Cannot recall the actual version or time posted. I didn't find time to
work on a linux driver for dw-apb-gpio, yet. My idea was to pick up the
latest driver posted plus make it more general. IIRC the one posted was
very limited to socfpga.

> Do you have a working pre-release version somewhere?

Sorry, nothing started, yet.

Are you going to work on it? If so, feel free to involve me in patches
and reviews.

Sebastian