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Diffstat (limited to 'arch/sh/cchips/hd6446x/hd64465/gpio.c')
-rw-r--r--arch/sh/cchips/hd6446x/hd64465/gpio.c196
1 files changed, 0 insertions, 196 deletions
diff --git a/arch/sh/cchips/hd6446x/hd64465/gpio.c b/arch/sh/cchips/hd6446x/hd64465/gpio.c
deleted file mode 100644
index 43431855ec8..00000000000
--- a/arch/sh/cchips/hd6446x/hd64465/gpio.c
+++ /dev/null
@@ -1,196 +0,0 @@
-/*
- * $Id: gpio.c,v 1.4 2003/05/19 22:24:18 lethal Exp $
- * by Greg Banks <gbanks@pocketpenguins.com>
- * (c) 2000 PocketPenguins Inc
- *
- * GPIO pin support for HD64465 companion chip.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/ioport.h>
-#include <asm/io.h>
-#include <asm/hd64465/gpio.h>
-
-#define _PORTOF(portpin) (((portpin)>>3)&0x7)
-#define _PINOF(portpin) ((portpin)&0x7)
-
-/* Register addresses parametrised on port */
-#define GPIO_CR(port) (HD64465_REG_GPACR+((port)<<1))
-#define GPIO_DR(port) (HD64465_REG_GPADR+((port)<<1))
-#define GPIO_ICR(port) (HD64465_REG_GPAICR+((port)<<1))
-#define GPIO_ISR(port) (HD64465_REG_GPAISR+((port)<<1))
-
-#define GPIO_NPORTS 5
-
-#define MODNAME "hd64465_gpio"
-
-EXPORT_SYMBOL(hd64465_gpio_configure);
-EXPORT_SYMBOL(hd64465_gpio_get_pin);
-EXPORT_SYMBOL(hd64465_gpio_get_port);
-EXPORT_SYMBOL(hd64465_gpio_register_irq);
-EXPORT_SYMBOL(hd64465_gpio_set_pin);
-EXPORT_SYMBOL(hd64465_gpio_set_port);
-EXPORT_SYMBOL(hd64465_gpio_unregister_irq);
-
-/* TODO: each port should be protected with a spinlock */
-
-
-void hd64465_gpio_configure(int portpin, int direction)
-{
- unsigned short cr;
- unsigned int shift = (_PINOF(portpin)<<1);
-
- cr = inw(GPIO_CR(_PORTOF(portpin)));
- cr &= ~(3<<shift);
- cr |= direction<<shift;
- outw(cr, GPIO_CR(_PORTOF(portpin)));
-}
-
-void hd64465_gpio_set_pin(int portpin, unsigned int value)
-{
- unsigned short d;
- unsigned short mask = 1<<(_PINOF(portpin));
-
- d = inw(GPIO_DR(_PORTOF(portpin)));
- if (value)
- d |= mask;
- else
- d &= ~mask;
- outw(d, GPIO_DR(_PORTOF(portpin)));
-}
-
-unsigned int hd64465_gpio_get_pin(int portpin)
-{
- return inw(GPIO_DR(_PORTOF(portpin))) & (1<<(_PINOF(portpin)));
-}
-
-/* TODO: for cleaner atomicity semantics, add a mask to this routine */
-
-void hd64465_gpio_set_port(int port, unsigned int value)
-{
- outw(value, GPIO_DR(port));
-}
-
-unsigned int hd64465_gpio_get_port(int port)
-{
- return inw(GPIO_DR(port));
-}
-
-
-static struct {
- void (*func)(int portpin, void *dev);
- void *dev;
-} handlers[GPIO_NPORTS * 8];
-
-static irqreturn_t hd64465_gpio_interrupt(int irq, void *dev)
-{
- unsigned short port, pin, isr, mask, portpin;
-
- for (port=0 ; port<GPIO_NPORTS ; port++) {
- isr = inw(GPIO_ISR(port));
-
- for (pin=0 ; pin<8 ; pin++) {
- mask = 1<<pin;
- if (isr & mask) {
- portpin = (port<<3)|pin;
- if (handlers[portpin].func != 0)
- handlers[portpin].func(portpin, handlers[portpin].dev);
- else
- printk(KERN_NOTICE "unexpected GPIO interrupt, pin %c%d\n",
- port+'A', (int)pin);
- }
- }
-
- /* Write 1s back to ISR to clear it? That's what the manual says.. */
- outw(isr, GPIO_ISR(port));
- }
-
- return IRQ_HANDLED;
-}
-
-void hd64465_gpio_register_irq(int portpin, int mode,
- void (*handler)(int portpin, void *dev), void *dev)
-{
- unsigned long flags;
- unsigned short icr, mask;
-
- if (handler == 0)
- return;
-
- local_irq_save(flags);
-
- handlers[portpin].func = handler;
- handlers[portpin].dev = dev;
-
- /*
- * Configure Interrupt Control Register
- */
- icr = inw(GPIO_ICR(_PORTOF(portpin)));
- mask = (1<<_PINOF(portpin));
-
- /* unmask interrupt */
- icr &= ~mask;
-
- /* set TS bit */
- mask <<= 8;
- icr &= ~mask;
- if (mode == HD64465_GPIO_RISING)
- icr |= mask;
-
- outw(icr, GPIO_ICR(_PORTOF(portpin)));
-
- local_irq_restore(flags);
-}
-
-void hd64465_gpio_unregister_irq(int portpin)
-{
- unsigned long flags;
- unsigned short icr;
-
- local_irq_save(flags);
-
- /*
- * Configure Interrupt Control Register
- */
- icr = inw(GPIO_ICR(_PORTOF(portpin)));
- icr |= (1<<_PINOF(portpin)); /* mask interrupt */
- outw(icr, GPIO_ICR(_PORTOF(portpin)));
-
- handlers[portpin].func = 0;
- handlers[portpin].dev = 0;
-
- local_irq_restore(flags);
-}
-
-static int __init hd64465_gpio_init(void)
-{
- if (!request_region(HD64465_REG_GPACR, 0x1000, MODNAME))
- return -EBUSY;
- if (request_irq(HD64465_IRQ_GPIO, hd64465_gpio_interrupt,
- IRQF_DISABLED, MODNAME, 0))
- goto out_irqfailed;
-
- printk("HD64465 GPIO layer on irq %d\n", HD64465_IRQ_GPIO);
-
- return 0;
-
-out_irqfailed:
- release_region(HD64465_REG_GPACR, 0x1000);
-
- return -EINVAL;
-}
-
-static void __exit hd64465_gpio_exit(void)
-{
- release_region(HD64465_REG_GPACR, 0x1000);
- free_irq(HD64465_IRQ_GPIO, 0);
-}
-
-module_init(hd64465_gpio_init);
-module_exit(hd64465_gpio_exit);
-
-MODULE_LICENSE("GPL");
-