[PATCH v2] gpio/samsung: Add device tree support for Exynos4

[Thomas Abraham]

Hi Mr. Kim,

On 2 November 2011 17:25, Kukjin Kim <kgene.kim at samsung.com> wrote:
> Thomas Abraham wrote:
>>
>> As gpio chips get registered, a device tree node which represents the
>> gpio chip is searched and attached to it. A translate function is also
>> provided to convert the gpio specifier into actual platform settings
>> for pin function selection, pull up/down and driver strength settings.
>>
>> Signed-off-by: Thomas Abraham <thomas.abraham at linaro.org>
>> Acked-by: Grant Likely <grant.likely at secretlab.ca>
>> ---
>> Changes since v1:
>> - As suggested by Rob and Grant, the gpio controller node lookup is based
>>   on the base address of the gpio controller instead of the unique
>>   per-controller compatible property value.
>>
>> This patch is based on the following tree and branch.
>> git://git.linaro.org/git/people/arnd/arm-soc.git  branch: for-next
>>
>>  .../devicetree/bindings/gpio/gpio-samsung.txt      |   40 ++++++++++++
>>  drivers/gpio/gpio-samsung.c                        |   66
>> ++++++++++++++++++++
>>  2 files changed, 106 insertions(+), 0 deletions(-)
>>  create mode 100644

[...]

>> diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c
>> index 8662518..0140756 100644
>> --- a/drivers/gpio/gpio-samsung.c
>> +++ b/drivers/gpio/gpio-samsung.c

[...]

> Thomas,
>
> Happens following build error.
>
> drivers/gpio/gpio-samsung.c: In function 'samsung_gpiolib_init':
> drivers/gpio/gpio-samsung.c:2519: error: 'EXYNOS4_PA_GPIO1' undeclared
> (first use in this function)
> drivers/gpio/gpio-samsung.c:2519: error: (Each undeclared identifier is
> reported only once
> drivers/gpio/gpio-samsung.c:2519: error: for each function it appears in.)
> drivers/gpio/gpio-samsung.c:2533: error: 'EXYNOS4_PA_GPIO2' undeclared
> (first use in this function)
> drivers/gpio/gpio-samsung.c:2547: error: 'EXYNOS4_PA_GPIO3' undeclared
> (first use in this function)

Can this be fixed while you apply this patch. If required, I can
submit an updated patch for this.

Thanks,
Thomas.

>
> Thanks.
>
> Best regards,
> Kgene.
> --
> Kukjin Kim <kgene.kim at samsung.com>, Senior Engineer,
> SW Solution Development Team, Samsung Electronics Co., Ltd.
>
>