* arch/arm/mach-ks8695/gpio.c
*
* Copyright (C) 2006 Andrew Victor
+ * Updated to GPIOLIB, Copyright 2008 Simtec Electronics
+ * Daniel Silverstone <dsilvers@simtec.co.uk>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/module.h>
+#include <linux/io.h>
-#include <asm/io.h>
#include <mach/hardware.h>
#include <asm/mach/irq.h>
* Configure a GPIO line for either GPIO function, or its internal
* function (Interrupt, Timer, etc).
*/
-static void __init_or_module ks8695_gpio_mode(unsigned int pin, short gpio)
+static void ks8695_gpio_mode(unsigned int pin, short gpio)
{
unsigned int enable[] = { IOPC_IOEINT0EN, IOPC_IOEINT1EN, IOPC_IOEINT2EN, IOPC_IOEINT3EN, IOPC_IOTIM0EN, IOPC_IOTIM1EN };
unsigned long x, flags;
/*
* Configure GPIO pin as external interrupt source.
*/
-int __init_or_module ks8695_gpio_interrupt(unsigned int pin, unsigned int type)
+int ks8695_gpio_interrupt(unsigned int pin, unsigned int type)
{
unsigned long x, flags;
/* set pin as input */
x = __raw_readl(KS8695_GPIO_VA + KS8695_IOPM);
- x &= ~IOPM_(pin);
+ x &= ~IOPM(pin);
__raw_writel(x, KS8695_GPIO_VA + KS8695_IOPM);
local_irq_restore(flags);
/*
* Configure the GPIO line as an input.
*/
-int __init_or_module gpio_direction_input(unsigned int pin)
+static int ks8695_gpio_direction_input(struct gpio_chip *gc, unsigned int pin)
{
unsigned long x, flags;
/* set pin as input */
x = __raw_readl(KS8695_GPIO_VA + KS8695_IOPM);
- x &= ~IOPM_(pin);
+ x &= ~IOPM(pin);
__raw_writel(x, KS8695_GPIO_VA + KS8695_IOPM);
local_irq_restore(flags);
return 0;
}
-EXPORT_SYMBOL(gpio_direction_input);
/*
* Configure the GPIO line as an output, with default state.
*/
-int __init_or_module gpio_direction_output(unsigned int pin, unsigned int state)
+static int ks8695_gpio_direction_output(struct gpio_chip *gc,
+ unsigned int pin, int state)
{
unsigned long x, flags;
/* set line state */
x = __raw_readl(KS8695_GPIO_VA + KS8695_IOPD);
if (state)
- x |= (1 << pin);
+ x |= IOPD(pin);
else
- x &= ~(1 << pin);
+ x &= ~IOPD(pin);
__raw_writel(x, KS8695_GPIO_VA + KS8695_IOPD);
/* set pin as output */
x = __raw_readl(KS8695_GPIO_VA + KS8695_IOPM);
- x |= IOPM_(pin);
+ x |= IOPM(pin);
__raw_writel(x, KS8695_GPIO_VA + KS8695_IOPM);
local_irq_restore(flags);
return 0;
}
-EXPORT_SYMBOL(gpio_direction_output);
/*
* Set the state of an output GPIO line.
*/
-void gpio_set_value(unsigned int pin, unsigned int state)
+static void ks8695_gpio_set_value(struct gpio_chip *gc,
+ unsigned int pin, int state)
{
unsigned long x, flags;
/* set output line state */
x = __raw_readl(KS8695_GPIO_VA + KS8695_IOPD);
if (state)
- x |= (1 << pin);
+ x |= IOPD(pin);
else
- x &= ~(1 << pin);
+ x &= ~IOPD(pin);
__raw_writel(x, KS8695_GPIO_VA + KS8695_IOPD);
local_irq_restore(flags);
}
-EXPORT_SYMBOL(gpio_set_value);
/*
* Read the state of a GPIO line.
*/
-int gpio_get_value(unsigned int pin)
+static int ks8695_gpio_get_value(struct gpio_chip *gc, unsigned int pin)
{
unsigned long x;
return -EINVAL;
x = __raw_readl(KS8695_GPIO_VA + KS8695_IOPD);
- return (x & (1 << pin)) != 0;
+ return (x & IOPD(pin)) != 0;
}
-EXPORT_SYMBOL(gpio_get_value);
/*
* Map GPIO line to IRQ number.
*/
-int gpio_to_irq(unsigned int pin)
+static int ks8695_gpio_to_irq(struct gpio_chip *gc, unsigned int pin)
{
if (pin > KS8695_GPIO_3) /* only GPIO 0..3 can generate IRQ */
return -EINVAL;
return gpio_irq[pin];
}
-EXPORT_SYMBOL(gpio_to_irq);
-
/*
* Map IRQ number to GPIO line.
}
EXPORT_SYMBOL(irq_to_gpio);
+/* GPIOLIB interface */
+
+static struct gpio_chip ks8695_gpio_chip = {
+ .label = "KS8695",
+ .direction_input = ks8695_gpio_direction_input,
+ .direction_output = ks8695_gpio_direction_output,
+ .get = ks8695_gpio_get_value,
+ .set = ks8695_gpio_set_value,
+ .to_irq = ks8695_gpio_to_irq,
+ .base = 0,
+ .ngpio = 16,
+ .can_sleep = 0,
+};
+
+/* Register the GPIOs */
+void ks8695_register_gpios(void)
+{
+ if (gpiochip_add(&ks8695_gpio_chip))
+ printk(KERN_ERR "Unable to register core GPIOs\n");
+}
/* .... Debug interface ..................................................... */
for (i = KS8695_GPIO_0; i <= KS8695_GPIO_15 ; i++) {
seq_printf(s, "%i:\t", i);
- seq_printf(s, "%s\t", (mode & IOPM_(i)) ? "Output" : "Input");
+ seq_printf(s, "%s\t", (mode & IOPM(i)) ? "Output" : "Input");
if (i <= KS8695_GPIO_3) {
if (ctrl & enable[i]) {
seq_printf(s, "\t");
- seq_printf(s, "%i\n", (data & IOPD_(i)) ? 1 : 0);
+ seq_printf(s, "%i\n", (data & IOPD(i)) ? 1 : 0);
}
return 0;
}