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board/nios2-generic: Use altera_pio driver and remove board specific driver

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Signed-off-by: Joachim Foerster <joachim.foerster@missinglinkelectronics.com>
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
This commit is contained in:
Joachim Foerster 2011-10-21 15:48:51 +02:00 committed by Thomas Chou
parent 03d67e1276
commit df969b5ffd
3 changed files with 4 additions and 72 deletions
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1
board/altera/nios2-generic/Makefile
View file

@ -32,7 +32,6 @@ LIB = $(obj)lib$(BOARD).o
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
SOBJS-y := text_base.o

71
board/altera/nios2-generic/gpio.c
View file

@ -1,71 +0,0 @@
/*
* board gpio driver
*
* Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
* Licensed under the GPL-2 or later.
*/
#include <common.h>
#include <asm/io.h>
#ifndef CONFIG_SYS_GPIO_BASE
#define ALTERA_PIO_BASE LED_PIO_BASE
#define ALTERA_PIO_WIDTH LED_PIO_WIDTH
#define ALTERA_PIO_DATA (ALTERA_PIO_BASE + 0)
#define ALTERA_PIO_DIR (ALTERA_PIO_BASE + 4)
static u32 pio_data_reg;
static u32 pio_dir_reg;
int gpio_request(unsigned gpio, const char *label)
{
return 0;
}
int gpio_free(unsigned gpio)
{
return 0;
}
int gpio_direction_input(unsigned gpio)
{
u32 mask = 1 << gpio;
writel(pio_dir_reg &= ~mask, ALTERA_PIO_DIR);
return 0;
}
int gpio_direction_output(unsigned gpio, int value)
{
u32 mask = 1 << gpio;
if (value)
pio_data_reg |= mask;
else
pio_data_reg &= ~mask;
writel(pio_data_reg, ALTERA_PIO_DATA);
writel(pio_dir_reg |= mask, ALTERA_PIO_DIR);
return 0;
}
int gpio_get_value(unsigned gpio)
{
u32 mask = 1 << gpio;
if (pio_dir_reg & mask)
return (pio_data_reg & mask) ? 1 : 0;
else
return (readl(ALTERA_PIO_DATA) & mask) ? 1 : 0;
}
void gpio_set_value(unsigned gpio, int value)
{
u32 mask = 1 << gpio;
if (value)
pio_data_reg |= mask;
else
pio_data_reg &= ~mask;
writel(pio_data_reg, ALTERA_PIO_DATA);
}
int gpio_is_valid(int number)
{
return ((unsigned)number) < ALTERA_PIO_WIDTH;
}
#endif

4
include/configs/nios2-generic.h
View file

@ -63,6 +63,10 @@
/*
* STATUS LED
*/
#define CONFIG_ALTERA_PIO
#define CONFIG_SYS_ALTERA_PIO_NUM 1
#define CONFIG_SYS_ALTERA_PIO_GPIO_NUM LED_PIO_WIDTH
#define CONFIG_STATUS_LED /* Enable status driver */
#define CONFIG_GPIO_LED /* Enable GPIO LED driver */
#define CONFIG_GPIO /* Enable GPIO driver */