+++ /dev/null
-diff -urN linux-2.6.16.7/arch/mips/au1000/mtx-1/irqmap.c linux-2.6.16.7.new/arch/mips/au1000/mtx-1/irqmap.c
---- linux-2.6.16.7/arch/mips/au1000/mtx-1/irqmap.c 2006-04-17 23:53:25.000000000 +0200
-+++ linux-2.6.16.7.new/arch/mips/au1000/mtx-1/irqmap.c 2006-04-23 11:54:31.000000000 +0200
-@@ -64,6 +64,7 @@
- { AU1500_GPIO_202, INTC_INT_LOW_LEVEL, 0 },
- { AU1500_GPIO_203, INTC_INT_LOW_LEVEL, 0 },
- { AU1500_GPIO_205, INTC_INT_LOW_LEVEL, 0 },
-+ { AU1500_GPIO_207, INTC_INT_RISE_AND_FALL_EDGE, 0 },
- };
-
- int au1xxx_nr_irqs = sizeof(au1xxx_irq_map)/sizeof(au1xxx_irq_map_t);
-diff -urN linux-2.6.16.7/arch/mips/au1000/mtx-1/Makefile linux-2.6.16.7.new/arch/mips/au1000/mtx-1/Makefile
---- linux-2.6.16.7/arch/mips/au1000/mtx-1/Makefile 2006-04-17 23:53:25.000000000 +0200
-+++ linux-2.6.16.7.new/arch/mips/au1000/mtx-1/Makefile 2006-04-23 14:01:36.000000000 +0200
-@@ -8,3 +8,4 @@
- #
-
- lib-y := init.o board_setup.o irqmap.o
-+obj-y := mtx-1_sysbtn.o
-diff -urN linux-2.6.16.7/arch/mips/au1000/mtx-1/mtx-1_sysbtn.c linux-2.6.16.7.new/arch/mips/au1000/mtx-1/mtx-1_sysbtn.c
---- linux-2.6.16.7/arch/mips/au1000/mtx-1/mtx-1_sysbtn.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.16.7.new/arch/mips/au1000/mtx-1/mtx-1_sysbtn.c 2006-04-23 14:01:17.000000000 +0200
-@@ -0,0 +1,218 @@
-+/*
-+ * Driver for the MTX-1 System Button.
-+ *
-+ * (c) Copyright 2005 4G Systems <info@4g-systems.biz>, All Rights Reserved.
-+ * http://www.4g-systems.biz
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License
-+ * as published by the Free Software Foundation; either version
-+ * 2 of the License, or (at your option) any later version.
-+ *
-+ * Neither Michael Stickel nor 4G Systeme GmbH admit liability nor provide
-+ * warranty for any of this software. This material is provided
-+ * "AS-IS" and at no charge.
-+ *
-+ * (c) Copyright 2005 4G Systems <info@4g-systems.biz>
-+ *
-+ * Release 0.01.
-+ *
-+ * Author: Michael Stickel michael.stickel@4g-systems.biz
-+ *
-+ *
-+ * After the module is loaded there is a device /dev/misc/btn
-+ * that can be read. It returns one char '1' if the button
-+ * has been pressed an '0' if it has been released.
-+ */
-+#include <linux/config.h>
-+#include <linux/module.h>
-+#include <linux/version.h>
-+#include <linux/types.h>
-+#include <linux/errno.h>
-+#include <linux/kernel.h>
-+#include <linux/poll.h>
-+#include <linux/sched.h>
-+#include <linux/miscdevice.h>
-+#include <linux/slab.h>
-+#include <linux/init.h>
-+#include <linux/irq.h>
-+#include <linux/interrupt.h>
-+
-+#include <asm/uaccess.h>
-+
-+#include <asm/mach-au1x00/au1000.h>
-+
-+
-+#ifndef FALSE
-+# define FALSE (0)
-+#endif
-+
-+#ifndef TRUE
-+# define TRUE (!FALSE)
-+#endif
-+
-+
-+//---------[ declarations ]-----------------
-+
-+
-+static DECLARE_WAIT_QUEUE_HEAD(mtx1btn_wait_queue);
-+static char state_changed;
-+static char last_value;
-+static char is_inuse;
-+
-+
-+//---------[ Hardware Functions ]-----------------
-+
-+// The MTX-1 Button is attached to GPIO207.
-+#define MTX1_GPIO2_SYSBTN (7)
-+#define MTX1_SYSBTN_IRQ (AU1500_GPIO_207)
-+
-+
-+static char mtx1_getbtn (int btnno)
-+{
-+ if (btnno==0) {
-+ return (au_readl(GPIO2_PINSTATE) & (1<<MTX1_GPIO2_SYSBTN)) ? 0 : 1;
-+ }
-+ return 0;
-+}
-+
-+static void mtx1_initbuttons (void)
-+{
-+ au_writel (au_readl(GPIO2_DIR) & ~(1<<MTX1_GPIO2_SYSBTN), GPIO2_DIR);
-+}
-+
-+
-+//---------[ Interrupt handling ]-----------------
-+
-+
-+static void mtx1_btn_interrupt (int irq, void *private, struct pt_regs *regs)
-+{
-+ char value = mtx1_getbtn(0);
-+ if (last_value != value)
-+ {
-+ last_value = value;
-+ state_changed = 1;
-+ wake_up (&mtx1btn_wait_queue);
-+ }
-+// kill_fasync(&async_queue, SIGIO, POLL_OUT);
-+}
-+
-+
-+static int mtx1_btn_startirq (void)
-+{
-+ if (!request_irq (MTX1_SYSBTN_IRQ, mtx1_btn_interrupt, 0 /* | SA_INTERRUPT */, "mtx1btn", (void *)&state_changed)) {
-+ return 0;
-+ }
-+ return -1;
-+}
-+
-+static int mtx1_btn_stopirq (void)
-+{
-+ free_irq(MTX1_SYSBTN_IRQ, (void *)&state_changed);
-+ return 0;
-+}
-+
-+
-+
-+//---------[ File Functions ]-----------------
-+
-+
-+static int mtx1sysbtn_minor = -1;
-+
-+
-+static int mtx1sysbtn_open (struct inode *inode, struct file *file)
-+{
-+ if (MINOR(inode->i_rdev)!=mtx1sysbtn_minor) return -ENODEV;
-+ if (is_inuse) return -EBUSY;
-+ is_inuse=1;
-+ last_value = mtx1_getbtn(0);
-+ state_changed = 0;
-+ return 0;
-+}
-+
-+
-+static int mtx1sysbtn_release (struct inode *inode, struct file *file) {
-+ if (MINOR(inode->i_rdev)==mtx1sysbtn_minor) {
-+ is_inuse=0;
-+ }
-+ return 0;
-+}
-+
-+
-+static ssize_t mtx1sysbtn_read (struct file *file, char *buf, size_t count, loff_t *ppos)
-+{
-+ if (count < 1)
-+ return -EINVAL;
-+ if (!state_changed)
-+ interruptible_sleep_on (&mtx1btn_wait_queue);
-+ state_changed = 0;
-+ char c = last_value ? '1' : '0'; /* mtx1_getbtn(0) */
-+ if(copy_to_user(buf, &c, 1))
-+ return -EFAULT;
-+ return 1;
-+}
-+
-+
-+static unsigned int mtx1sysbtn_poll (struct file *file, poll_table * wait)
-+{
-+ unsigned int mask = 0;
-+
-+ poll_wait (file, &mtx1btn_wait_queue, wait);
-+
-+ if (state_changed) // state changed since last time.
-+ mask |= POLLIN | POLLRDNORM;
-+
-+ return mask;
-+}
-+
-+
-+static struct file_operations mtx1sysbtn_fops = {
-+ .owner = THIS_MODULE,
-+ .read = mtx1sysbtn_read,
-+ .poll = mtx1sysbtn_poll,
-+ .open = mtx1sysbtn_open,
-+ .release = mtx1sysbtn_release
-+};
-+
-+
-+static struct miscdevice mtx1sysbtn_miscdev = {
-+ MISC_DYNAMIC_MINOR /* SYSBTN_MINOR */ ,
-+ "btn",
-+ &mtx1sysbtn_fops
-+};
-+
-+
-+
-+//---------[ Module Functions ]-----------------
-+
-+
-+void __exit exit_mtx1_sysbtn (void)
-+{
-+ is_inuse = 1;
-+ mtx1_btn_stopirq ();
-+ misc_deregister(&mtx1sysbtn_miscdev);
-+}
-+
-+
-+static int __init init_mtx1_sysbtn (void)
-+{
-+ printk("MTX-1 System Button driver\n");
-+ is_inuse = 1;
-+ mtx1_initbuttons ();
-+ if (misc_register (&mtx1sysbtn_miscdev) >= 0) {
-+ mtx1sysbtn_minor = mtx1sysbtn_miscdev.minor;
-+ if (mtx1_btn_startirq () == 0) {
-+ is_inuse=0;
-+ return 0;
-+ }
-+ misc_deregister(&mtx1sysbtn_miscdev);
-+ }
-+ return 1;
-+}
-+
-+module_init(init_mtx1_sysbtn);
-+module_exit(exit_mtx1_sysbtn);
-+
-+MODULE_AUTHOR("Michael Stickel");
-+MODULE_DESCRIPTION("Driver for the MTX-1 system button");
-+MODULE_LICENSE("GPL");
projects / openwrt / staging / dedeckeh.git / blobdiff