[U-Boot] [PATCH 3/6 v3] nios2: add gpio support to nios2-generic board

[Scott McNutt <smcnutt@psyent.com>]

Thomas Chou wrote:
> On 04/30/2010 10:24 PM, Scott McNutt wrote:
>> Thomas Chou wrote:
>>> This patch adds gpio support of Altera PIO component to the
>>> nios2-generic board. Though it drives only gpio_led at the
>>> moment, it supports bidirectional port to control bit-banging
>>> I2C, NAND flash busy status or button switches, etc.
>>>
>>> Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
>>> ---
>>> v3: split patches for gpio and spi, based gpio on altera pio core.
>>> v2: remove mmc_spi_init()
>>>
>>>  board/altera/nios2-generic/Makefile |    1 +
>>>  board/altera/nios2-generic/gpio.c   |   55 
>>> +++++++++++++++++++++++++++++++++++
>>>  include/configs/nios2-generic.h     |    6 ++--
>>>  3 files changed, 59 insertions(+), 3 deletions(-)
>>>  create mode 100644 board/altera/nios2-generic/gpio.c
>>>
>>> diff --git a/board/altera/nios2-generic/Makefile 
>>> b/board/altera/nios2-generic/Makefile
>>> index 6780872..d1fca70 100644
>>> --- a/board/altera/nios2-generic/Makefile
>>> +++ b/board/altera/nios2-generic/Makefile
>>> @@ -32,6 +32,7 @@ LIB    = $(obj)lib$(BOARD).a
>>>  COBJS-y    := $(BOARD).o
>>>  COBJS-$(CONFIG_CMD_IDE) += ../common/cfide.o
>>>  COBJS-$(CONFIG_EPLED) += ../common/epled.o
>>> +COBJS-$(CONFIG_GPIO) += gpio.o
>>>  COBJS-$(CONFIG_SEVENSEG) += ../common/sevenseg.o
>>
>> This will build a u-boot image that will not work with any
>> of the standard configurations ... correct? ... since the
>> GPIO component is custom (not supplied by the vendor)?
>>
> Hi Scott,
> 
> The board gpio.c driver works on Altera PIO component. It will behave 
> exactly the same as the epled driver. I have tested it on EP1C20 an 
> EP2C35 board with standard configuration. I believe it will work with 
> the standard configuration on EP1S10 and EP1S40. I don't want to break 
> anything.

Ok. I'll try to test over the weekend as well.

Thanks,
--Scott