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Adding PS2, capacitive keyboard examples

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This commit is contained in:
carlos
2010-11-30 19:26:56 -05:00
parent 2efe106cf3
commit 62d0edf217
275 changed files with 1696660 additions and 23991 deletions
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28
PS2_INTERFACE/drivers/Makefile Executable file
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EXTRA_CFLAGS += -Wall
OPENWRT_BASE = /home/ari/sie/p/openwrt-xburst
KERNEL_SRC = $(OPENWRT_BASE)/build_dir/linux-xburst_qi_lb60/linux-2.6.32.16/
CC = $(OPENWRT_BASE)/staging_dir/toolchain-mipsel_gcc-4.3.3+cs_uClibc-0.9.32/usr/bin/mipsel-openwrt-linux-gcc
CROSS_COMPILE = $(OPENWRT_BASE)/staging_dir/toolchain-mipsel_gcc-4.3.3+cs_uClibc-0.9.32/usr/bin/mipsel-openwrt-linux-
NANO_IP = 192.168.254.101
obj-m += ps2_kb.o ps2_ms.o#hello.o memory.o digTest.o
all: driver #main
driver:
make -C $(KERNEL_SRC) M=$(PWD) ARCH=mips CROSS_COMPILE=$(CROSS_COMPILE) modules
clean:
make -C $(KERNEL_SRC) M=$(PWD) ARCH=mips CROSS_COMPILE=$(CROSS_COMPILE) clean
rm -f *.o Modules.symvers
cleanall:
make -C $(KERNEL_SRC) M=$(PWD) ARCH=mips CROSS_COMPILE=$(CROSS_COMPILE) clean
rm -f *.o *.c~ Makefile~ main.o main Modules.symvers
upload: all
scp ps2_ms.ko root@$(NANO_IP):~/
main: main.o
PREPROCESS.c = $(CC) $(CFLAGS) $(TARGET_ARCH) -E -Wp,-C,-dD,-dI
%.pp : %.c FORCE
$(PREPROCESS.c) $< > $@

18
PS2_INTERFACE/drivers/hello.c Executable file
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/* Necessary includes for drivers */
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h> /* printk() */
MODULE_LICENSE("GPL");
static int hello_init(void) {
printk("Hello world!. init\n");
return 0;
}
static void hello_exit(void) {
printk("Bye, cruel world. exit\n");
}
module_init(hello_init);
module_exit(hello_exit)

110
PS2_INTERFACE/drivers/hpps2atkbd.h Executable file
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/*
* drivers/input/keyboard/hpps2atkbd.h
*
* Copyright (c) 2004 Helge Deller <deller@gmx.de>
* Copyright (c) 2002 Laurent Canet <canetl@esiee.fr>
* Copyright (c) 2002 Thibaut Varene <varenet@parisc-linux.org>
* Copyright (c) 2000 Xavier Debacker <debackex@esiee.fr>
*
* HP PS/2 AT-compatible Keyboard, found in PA/RISC Workstations & Laptops
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
/* Is the keyboard an RDI PrecisionBook? */
#ifndef CONFIG_KEYBOARD_ATKBD_RDI_KEYCODES
# define CONFLICT(x,y) x
#else
# define CONFLICT(x,y) y
#endif
/* sadly RDI (Tadpole) decided to ship a different keyboard layout
than HP for their PS/2 laptop keyboard which leads to conflicting
keycodes between a normal HP PS/2 keyboard and a RDI Precisionbook.
HP: RDI: */
#define C_07 CONFLICT( KEY_F12, KEY_F1 )
#define C_11 CONFLICT( KEY_LEFTALT, KEY_LEFTCTRL )
#define C_14 CONFLICT( KEY_LEFTCTRL, KEY_CAPSLOCK )
#define C_58 CONFLICT( KEY_CAPSLOCK, KEY_RIGHTCTRL )
#define C_61 CONFLICT( KEY_102ND, KEY_LEFT )
/* Raw SET 2 scancode table */
/* 00 */ KEY_RESERVED, KEY_F9, KEY_RESERVED, KEY_F5, KEY_F3, KEY_F1, KEY_F2, C_07,
/* 08 */ KEY_ESC, KEY_F10, KEY_F8, KEY_F6, KEY_F4, KEY_TAB, KEY_GRAVE, KEY_F2,
/* 10 */ KEY_RESERVED, C_11, KEY_LEFTSHIFT, KEY_RESERVED, C_14, KEY_Q, KEY_1, KEY_F3,
/* 18 */ KEY_RESERVED, KEY_LEFTALT, KEY_Z, KEY_S, KEY_A, KEY_W, KEY_2, KEY_F4,
/* 20 */ KEY_RESERVED, KEY_C, KEY_X, KEY_D, KEY_E, KEY_4, KEY_3, KEY_F5,
/* 28 */ KEY_RESERVED, KEY_SPACE, KEY_V, KEY_F, KEY_T, KEY_R, KEY_5, KEY_F6,
/* 30 */ KEY_RESERVED, KEY_N, KEY_B, KEY_H, KEY_G, KEY_Y, KEY_6, KEY_F7,
/* 38 */ KEY_RESERVED, KEY_RIGHTALT, KEY_M, KEY_J, KEY_U, KEY_7, KEY_8, KEY_F8,
/* 40 */ KEY_RESERVED, KEY_COMMA, KEY_K, KEY_I, KEY_O, KEY_0, KEY_9, KEY_F9,
/* 48 */ KEY_RESERVED, KEY_DOT, KEY_SLASH, KEY_L, KEY_SEMICOLON, KEY_P, KEY_MINUS, KEY_F10,
/* 50 */ KEY_RESERVED, KEY_RESERVED, KEY_APOSTROPHE,KEY_RESERVED, KEY_LEFTBRACE, KEY_EQUAL, KEY_F11, KEY_SYSRQ,
/* 58 */ C_58, KEY_RIGHTSHIFT,KEY_ENTER, KEY_RIGHTBRACE,KEY_BACKSLASH, KEY_BACKSLASH,KEY_F12, KEY_SCROLLLOCK,
/* 60 */ KEY_DOWN, C_61, KEY_PAUSE, KEY_UP, KEY_DELETE, KEY_END, KEY_BACKSPACE, KEY_INSERT,
/* 68 */ KEY_RESERVED, KEY_KP1, KEY_RIGHT, KEY_KP4, KEY_KP7, KEY_PAGEDOWN, KEY_HOME, KEY_PAGEUP,
/* 70 */ KEY_KP0, KEY_KPDOT, KEY_KP2, KEY_KP5, KEY_KP6, KEY_KP8, KEY_ESC, KEY_NUMLOCK,
/* 78 */ KEY_F11, KEY_KPPLUS, KEY_KP3, KEY_KPMINUS, KEY_KPASTERISK,KEY_KP9, KEY_SCROLLLOCK,KEY_102ND,
/* 80 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 88 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 90 */ KEY_RESERVED, KEY_RIGHTALT, 255, KEY_RESERVED, KEY_RIGHTCTRL, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 98 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_CAPSLOCK, KEY_RESERVED, KEY_LEFTMETA,
/* a0 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RIGHTMETA,
/* a8 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_COMPOSE,
/* b0 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* b8 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* c0 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* c8 */ KEY_RESERVED, KEY_RESERVED, KEY_KPSLASH, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* d0 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* d8 */ KEY_RESERVED, KEY_RESERVED, KEY_KPENTER, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* e0 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* e8 */ KEY_RESERVED, KEY_END, KEY_RESERVED, KEY_LEFT, KEY_HOME, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* f0 */ KEY_INSERT, KEY_DELETE, KEY_DOWN, KEY_RESERVED, KEY_RIGHT, KEY_UP, KEY_RESERVED, KEY_PAUSE,
/* f8 */ KEY_RESERVED, KEY_RESERVED, KEY_PAGEDOWN, KEY_RESERVED, KEY_SYSRQ, KEY_PAGEUP, KEY_RESERVED, KEY_RESERVED,
/* These are offset for escaped keycodes: */
/* 00 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_F7, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 08 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_LEFTMETA, KEY_RIGHTMETA, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 10 */ KEY_RESERVED, KEY_RIGHTALT, KEY_RESERVED, KEY_RESERVED, KEY_RIGHTCTRL, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 18 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 20 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 28 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 30 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 38 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 40 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 48 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 50 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 58 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 60 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 68 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 70 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 78 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 80 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 88 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 90 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 98 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* a0 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* a8 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* b0 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* b8 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* c0 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* c8 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* d0 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* d8 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* e0 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* e8 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* f0 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* f8 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED
#undef CONFLICT
#undef C_07
#undef C_11
#undef C_14
#undef C_58
#undef C_61

162
PS2_INTERFACE/drivers/kbps2.c Executable file
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/*
* Driver preliminar y de pruebas de teclado ps2 kbps2
*
* Author: Ari Andrés Bejarano H.
*
*/
#include <linux/module.h> /* Needed by all modules */
#include <linux/kernel.h> /* Needed for KERN_INFO, printk() */
#include <linux/ioport.h>
#include <linux/device.h>
#include <linux/interrupt.h> /* We want an interrupt */
#include <linux/irq.h> /* We want an interrupt */
#include <linux/platform_device.h>
#include <linux/fs.h>
#include <asm/uaccess.h>
#include <asm/io.h> /*ioremap ioremap_nocache iounmap iowriteXX ioreadXX*/
#include <linux/gpio.h>
#include <asm/mach-jz4740/gpio.h>
#include<asm/system.h> /*rmb*/
#define FPGA_IRQ_PIN JZ_GPIO_PORTC(15)
#define FPGA_CS JZ_GPIO_PORTB(26)
#define FPGA_BASE_BEGIN 0x15000000
#define FPGA_BASE_END 0x17FFFFFF
#define SUCCESS 0
#define DEVICE_NAME "kbps2" /* Dev name as it appears in /proc/devices */
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Ari");
MODULE_DESCRIPTION("Keyboard ps2");
MODULE_VERSION("1.0");
/* Declaration of kbps2.c functions */
static irqreturn_t irq_handler(int irq, void *dev_id);
static int kbps2_open(struct inode *, struct file *);
static int kbps2_release(struct inode *, struct file *);
static ssize_t kbps2_read(struct file *, char *, size_t, loff_t *);
static ssize_t kbps2_write(struct file *, const char *, size_t, loff_t *);
static int __init kbps2_init(void);
static void __exit kbps2_exit(void);
/* Structure that declares the usual file */
/* access functions */
struct file_operations fops = {
.owner = THIS_MODULE,
.read = kbps2_read,
.write = kbps2_write,
.open = kbps2_open,
.release = kbps2_release
};
/* Declaration of the init and exit functions */
module_init(kbps2_init);
module_exit(kbps2_exit);
/* Global variables of the driver */
static int irq_enabled = 0;
static int is_device_open = 0; /* Is device open? Used to prevent multiple access to device */
static int Major=65; /* Major number */
static DECLARE_WAIT_QUEUE_HEAD(wq);
static void __iomem *ioaddress;
static unsigned int interrupt_counter = 0;
static int __init kbps2_init(void)
{
int res, irq, result;
barrier();
printk(KERN_INFO "FPGA module is Up.\n");
interrupt_counter = 0;
/* Registering device */
result = register_chrdev(Major, DEVICE_NAME, &fops);
if (result < 0) {
printk("<1>memory: cannot obtain major number %d\n", Major);
return result;
}
/* Set up the FGPA irq line */
irq = gpio_to_irq(FPGA_IRQ_PIN);
res = request_irq(irq, irq_handler, IRQF_DISABLED | IRQF_TRIGGER_RISING, "FPGA - IRQ", NULL); // IRQF_TRIGGER_FALLING
irq_enabled = 1;
printk(KERN_INFO "FPGA irq_enabled...\n");
/* Set GPIOB26 as part of External Memory Controller*/
jz_gpio_set_function (FPGA_CS, JZ_GPIO_FUNC_NONE);
/* Use ioremap to get a handle on our region */
ioaddress = __ioremap(FPGA_BASE_BEGIN, FPGA_BASE_END - FPGA_BASE_BEGIN, _CACHE_UNCACHED);
return 0;
}
static void __exit kbps2_exit(void)
{
// int ret;
/*Tho order for free_irq, iounmap & unregister is very important */
free_irq(FPGA_IRQ_PIN, NULL);
__iounmap(ioaddress);
unregister_chrdev(Major, DEVICE_NAME);
printk(KERN_INFO "FPGA driver is down...\n");
}
static irqreturn_t irq_handler(int irq, void *dev_id)
{
unsigned int red;
if(irq_enabled)
{
interrupt_counter++;
printk(KERN_INFO "interrupt_counter=%d\n",interrupt_counter);
red=ioread32(ioaddress)& 0XFF;
rmb();
printk("%X \n", red);
wake_up_interruptible(&wq);
}
return IRQ_HANDLED;
}
static int kbps2_open(struct inode *inode, struct file *file)
{
if (is_device_open)
return -EBUSY;
is_device_open = 1;
try_module_get(THIS_MODULE);
return SUCCESS;
}
static int kbps2_release(struct inode *inode, struct file *file)
{
is_device_open = 0;
module_put(THIS_MODULE);
return 0;
}
static ssize_t kbps2_read(struct file *filp, char *buffer, size_t count, loff_t *offset)
{
unsigned int red;
printk(KERN_INFO "read______-_-\n");
red=ioread32(ioaddress)& 0XFF;
rmb();
printk("%X\n", red);
return 0;
}
static ssize_t kbps2_write(struct file *filp, const char *buff, size_t count, loff_t * off)
{
printk(KERN_INFO "write______-_-\n");
printk("%X\n", buff[0]);
iowrite32(buff[0],ioaddress);
wmb();
return 1;
}

125
PS2_INTERFACE/drivers/memory.c Executable file
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@@ -0,0 +1,125 @@
/* Necessary includes for drivers */
#include <linux/init.h>
//#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h> /* printk() */
#include <linux/slab.h> /* kmalloc() */
#include <linux/fs.h> /* everything... */
#include <linux/errno.h> /* error codes */
#include <linux/types.h> /* size_t */
#include <linux/proc_fs.h>
#include <linux/fcntl.h> /* O_ACCMODE */
#include <linux/ioport.h>
#include <asm/system.h> /* cli(), *_flags */
#include <asm/uaccess.h> /* copy_from/to_user */
#include <asm/io.h> /* inb, outb */
MODULE_LICENSE("GPL");
/* Declaration of memory.c functions */
int memory_open(struct inode *inode, struct file *filp);
int memory_release(struct inode *inode, struct file *filp);
ssize_t memory_read(struct file *filp, char *buf, size_t count, loff_t *f_pos);
ssize_t memory_write(struct file *filp, char *buf, size_t count, loff_t *f_pos);
void memory_exit(void);
int memory_init(void);
/* Structure that declares the usual file */
/* access functions */
struct file_operations memory_fops = {
read: memory_read,
write: memory_write,
open: memory_open,
release: memory_release
};
/* Declaration of the init and exit functions */
module_init(memory_init);
module_exit(memory_exit);
/* Global variables of the driver */
/* Major number */
int memory_major = 60;
/* Buffer to store data */
char *memory_buffer;
int memory_init(void) {
int result;
/* Registering device */
result = register_chrdev(memory_major, "memory", &memory_fops);
if (result < 0) {
printk(
"<1>memory: cannot obtain major number %d\n", memory_major);
return result;
}
/* Allocating memory for the buffer */
memory_buffer = kmalloc(1, GFP_KERNEL);
if (!memory_buffer) {
result = -ENOMEM;
goto fail;
}
memset(memory_buffer, 0, 1);
printk("<1>Inserting memory module\n");
return 0;
fail:
memory_exit();
return result;
}
void memory_exit(void) {
/* Freeing the major number */
unregister_chrdev(memory_major, "memory");
/* Freeing buffer memory */
if (memory_buffer) {
kfree(memory_buffer);
}
printk("<1>Removing memory module\n");
}
int memory_open(struct inode *inode, struct file *filp) {
/* Success */
return 0;
}
int memory_release(struct inode *inode, struct file *filp) {
/* Success */
return 0;
}
ssize_t memory_read(struct file *filp, char *buf,
size_t count, loff_t *f_pos) {
/* Transfering data to user space */
copy_to_user(buf,memory_buffer,1);
/* Changing reading position as best suits */
if (*f_pos == 0) {
*f_pos+=1;
return 1;
} else {
return 0;
}
}
ssize_t memory_write( struct file *filp, char *buf,
size_t count, loff_t *f_pos) {
char *tmp;
tmp=buf+count-1;
copy_from_user(memory_buffer,tmp,1);
return 1;
}

149
PS2_INTERFACE/drivers/ps2_kb.c Executable file
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@@ -0,0 +1,149 @@
#include <linux/types.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/gpio.h>
#include <asm/mach-jz4740/gpio.h>
#define FPGA_IRQ_PIN JZ_GPIO_PORTC(15)
#define FPGA_CS JZ_GPIO_PORTB(26)
#define FPGA_BASE_BEGIN 0x15000000
#define FPGA_BASE_END 0x17FFFFFF
static unsigned int key_p;
static unsigned int key_e;
/*
* Scancode to keycode tables. These are just the default setting, and
* are loadable via a userland utility.
*/
#define ATKBD_KEYMAP_SIZE 512
static const unsigned short atkbd_set2_keycode[ATKBD_KEYMAP_SIZE] = {
#ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
//stream mode
iowrite32(0x000000EA,ioaddress);
mb();
/* XXX: need a more general approach */
#include "hpps2atkbd.h" /* include the keyboard scancodes */
#else
0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117,
0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0,
0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183,
0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185,
0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0,
0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85,
0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0,
82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125,
173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127,
159, 0,115, 0,164, 0, 0,116,158, 0,172,166, 0, 0, 0,142,
157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0,
226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112,
110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0,
0, 0, 0, 65, 99,
#endif
};
static struct input_dev *ps2kbd_dev;
static void __iomem *ioaddress;
static irqreturn_t ps2_keyboard_interrupt(int irq, void *id)
{
unsigned char scancode, keycode;
scancode = (unsigned char)(ioread32(ioaddress)& 0XFF);
rmb();
//printk(KERN_INFO "scancode %x\n", scancode);
if (scancode == 0xAA)printk(KERN_INFO "PS/2 keyboard. ok\n");
else if (scancode == 0xFC)printk(KERN_INFO "PS/2 keyboard. error\n");
else if (scancode == 0xF0)key_p=0;
else if (scancode == 0xE0)key_e=1;
else if (scancode <= 0x7E){ /* scancodes < 0xf2 are keys */
keycode = atkbd_set2_keycode[scancode+0x80*key_e];
input_report_key(ps2kbd_dev, keycode, key_p);
input_sync(ps2kbd_dev);
key_p=1;
key_e=0;
} else /* scancodes >= 0xf2 are mouse data, most likely */
printk(KERN_INFO "ps2kbd: unhandled scancode %x\n", scancode);
return IRQ_HANDLED;
}
static int __init ps2_keyboard_init(void)
{
int i, error, res, irq;
key_p=1;
key_e=0;
ps2kbd_dev = input_allocate_device();
if (!ps2kbd_dev)
return -ENOMEM;
ps2kbd_dev->name = "PS2 Keyboard";
ps2kbd_dev->phys = "ps2kbd/input0";
ps2kbd_dev->id.bustype = BUS_HOST;
ps2kbd_dev->id.vendor = 0x0001;
ps2kbd_dev->id.product = 0x0001;
ps2kbd_dev->id.version = 0x0100;
ps2kbd_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
ps2kbd_dev->keycode = atkbd_set2_keycode;
ps2kbd_dev->keycodesize = sizeof(unsigned short);
ps2kbd_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
for (i = 0; i < ATKBD_KEYMAP_SIZE; i++) {
set_bit(atkbd_set2_keycode[i], ps2kbd_dev->keybit);
}
/* error check */
error = input_register_device(ps2kbd_dev);
if (error) {
input_free_device(ps2kbd_dev);
return error;
}
/* Set up the FGPA irq line */
irq = gpio_to_irq(FPGA_IRQ_PIN);
res = request_irq(irq, ps2_keyboard_interrupt, IRQF_DISABLED | IRQF_TRIGGER_RISING, "FPGA - IRQ", NULL); // IRQF_TRIGGER_FALLING
/* Set GPIOB26 as part of External Memory Controller*/
jz_gpio_set_function (FPGA_CS, JZ_GPIO_FUNC_NONE);
/* Use ioremap to get a handle on our region */
ioaddress = __ioremap(FPGA_BASE_BEGIN, FPGA_BASE_END - FPGA_BASE_BEGIN, _CACHE_UNCACHED);
return 0;
}
static void __exit ps2_keyboard_exit(void)
{
free_irq(FPGA_IRQ_PIN, NULL);
__iounmap(ioaddress);
input_unregister_device(ps2kbd_dev);
}
module_init(ps2_keyboard_init);
module_exit(ps2_keyboard_exit);
MODULE_AUTHOR("Ari Bejarano <aabejaranoh@unal.edu.co>");
MODULE_DESCRIPTION("PS/2 Keyboard Driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:ps2-keyboard");