[U-Boot] [PATCH v3] gpio: atmel: Add the PIO4 driver support

[Andreas Bießmann]

On 04.11.15 07:25, Wenyou Yang wrote:
> The PIO4 is introduced from SAMA5D2, as a new version
> for Atmel PIO controller.
> 
> Signed-off-by: Wenyou Yang <wenyou.yang at atmel.com>

Reviewed-by: Andreas Bießmann <andreas.devel at googlemail.com>

> ---
> 
> Changes in v3:
>  1./ add return to atmel_pio4_set_pio_output() to avoid compilation
>      warning.
> 
> Changes in v2:
>  1./ update the macro definitions according to the latest datasheet.
>  2./ change the return value to -ENODEV.
>  3./ add check to port_base, pin and return -ENODEV.
>  4./ change the return value for set/get_pio_output/input function.
> 
>  arch/arm/mach-at91/include/mach/atmel_pio4.h |   48 +++++
>  drivers/gpio/Kconfig                         |   11 +
>  drivers/gpio/Makefile                        |    1 +
>  drivers/gpio/atmel_pio4.c                    |  296 ++++++++++++++++++++++++++
>  4 files changed, 356 insertions(+)
>  create mode 100644 arch/arm/mach-at91/include/mach/atmel_pio4.h
>  create mode 100644 drivers/gpio/atmel_pio4.c