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.
It was actually the first gpio driver I wrote for nios2-linux before the custom gpio core.
Best regards, Thomas