diff options
Diffstat (limited to 'drivers/char/qtronix.c')
| -rw-r--r-- | drivers/char/qtronix.c | 605 |
1 files changed, 0 insertions, 605 deletions
diff --git a/drivers/char/qtronix.c b/drivers/char/qtronix.c deleted file mode 100644 index 5c94777..0000000 --- a/drivers/char/qtronix.c +++ /dev/null @@ -1,605 +0,0 @@ -/* - * - * BRIEF MODULE DESCRIPTION - * Qtronix 990P infrared keyboard driver. - * - * - * Copyright 2001 MontaVista Software Inc. - * Author: MontaVista Software, Inc. - * ppopov@mvista.com or source@mvista.com - * - * - * The bottom portion of this driver was take from - * pc_keyb.c Please see that file for copyrights. - * - * 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. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ - - -/* - * NOTE: - * - * This driver has only been tested with the Consumer IR - * port of the ITE 8172 system controller. - * - * You do not need this driver if you are using the ps/2 or - * USB adapter that the keyboard ships with. You only need - * this driver if your board has a IR port and the keyboard - * data is being sent directly to the IR. In that case, - * you also need some low-level IR support. See it8172_cir.c. - * - */ - -#ifdef CONFIG_QTRONIX_KEYBOARD - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> - -#include <asm/it8172/it8172.h> -#include <asm/it8172/it8172_int.h> -#include <asm/it8172/it8172_cir.h> - -#include <linux/spinlock.h> -#include <linux/sched.h> -#include <linux/interrupt.h> -#include <linux/tty.h> -#include <linux/mm.h> -#include <linux/signal.h> -#include <linux/init.h> -#include <linux/kbd_ll.h> -#include <linux/delay.h> -#include <linux/poll.h> -#include <linux/miscdevice.h> -#include <linux/slab.h> -#include <linux/kbd_kern.h> -#include <linux/smp_lock.h> -#include <asm/io.h> -#include <linux/pc_keyb.h> - -#include <asm/keyboard.h> -#include <linux/bitops.h> -#include <asm/uaccess.h> -#include <asm/irq.h> -#include <asm/system.h> - -#define leading1 0 -#define leading2 0xF - -#define KBD_CIR_PORT 0 -#define AUX_RECONNECT 170 /* scancode when ps2 device is plugged (back) in */ - -static int data_index; -struct cir_port *cir; -static unsigned char kbdbytes[5]; -static unsigned char cir_data[32]; /* we only need 16 chars */ - -static void kbd_int_handler(int irq, void *dev_id); -static int handle_data(unsigned char *p_data); -static inline void handle_mouse_event(unsigned char scancode); -static inline void handle_keyboard_event(unsigned char scancode, int down); -static int __init psaux_init(void); - -static struct aux_queue *queue; /* Mouse data buffer. */ -static int aux_count = 0; - -/* - * Keys accessed through the 'Fn' key - * The Fn key does not produce a key-up sequence. So, the first - * time the user presses it, it will be key-down event. The key - * stays down until the user presses it again. - */ -#define NUM_FN_KEYS 56 -static unsigned char fn_keys[NUM_FN_KEYS] = { - 0,0,0,0,0,0,0,0, /* 0 7 */ - 8,9,10,93,0,0,0,0, /* 8 15 */ - 0,0,0,0,0,0,0,5, /* 16 23 */ - 6,7,91,0,0,0,0,0, /* 24 31 */ - 0,0,0,0,0,2,3,4, /* 32 39 */ - 92,0,0,0,0,0,0,0, /* 40 47 */ - 0,0,0,0,11,0,94,95 /* 48 55 */ - -}; - -void __init init_qtronix_990P_kbd(void) -{ - int retval; - - cir = (struct cir_port *)kmalloc(sizeof(struct cir_port), GFP_KERNEL); - if (!cir) { - printk("Unable to initialize Qtronix keyboard\n"); - return; - } - - /* - * revisit - * this should be programmable, somehow by the, by the user. - */ - cir->port = KBD_CIR_PORT; - cir->baud_rate = 0x1d; - cir->rdwos = 0; - cir->rxdcr = 0x3; - cir->hcfs = 0; - cir->fifo_tl = 0; - cir->cfq = 0x1d; - cir_port_init(cir); - - retval = request_irq(IT8172_CIR0_IRQ, kbd_int_handler, - (unsigned long )(IRQF_DISABLED|IRQF_SHARED), - (const char *)"Qtronix IR Keyboard", (void *)cir); - - if (retval) { - printk("unable to allocate cir %d irq %d\n", - cir->port, IT8172_CIR0_IRQ); - } -#ifdef CONFIG_PSMOUSE - psaux_init(); -#endif -} - -static inline unsigned char BitReverse(unsigned short key) -{ - unsigned char rkey = 0; - rkey |= (key & 0x1) << 7; - rkey |= (key & 0x2) << 5; - rkey |= (key & 0x4) << 3; - rkey |= (key & 0x8) << 1; - rkey |= (key & 0x10) >> 1; - rkey |= (key & 0x20) >> 3; - rkey |= (key & 0x40) >> 5; - rkey |= (key & 0x80) >> 7; - return rkey; - -} - - -static inline u_int8_t UpperByte(u_int8_t data) -{ - return (data >> 4); -} - - -static inline u_int8_t LowerByte(u_int8_t data) -{ - return (data & 0xF); -} - - -int CheckSumOk(u_int8_t byte1, u_int8_t byte2, - u_int8_t byte3, u_int8_t byte4, u_int8_t byte5) -{ - u_int8_t CheckSum; - - CheckSum = (byte1 & 0x0F) + byte2 + byte3 + byte4 + byte5; - if ( LowerByte(UpperByte(CheckSum) + LowerByte(CheckSum)) != UpperByte(byte1) ) - return 0; - else - return 1; -} - - -static void kbd_int_handler(int irq, void *dev_id) -{ - struct cir_port *cir; - int j; - unsigned char int_status; - - cir = (struct cir_port *)dev_id; - int_status = get_int_status(cir); - if (int_status & 0x4) { - clear_fifo(cir); - return; - } - - while (cir_get_rx_count(cir)) { - - cir_data[data_index] = cir_read_data(cir); - - if (data_index == 0) {/* expecting first byte */ - if (cir_data[data_index] != leading1) { - //printk("!leading byte %x\n", cir_data[data_index]); - set_rx_active(cir); - clear_fifo(cir); - continue; - } - } - if (data_index == 1) { - if ((cir_data[data_index] & 0xf) != leading2) { - set_rx_active(cir); - data_index = 0; /* start over */ - clear_fifo(cir); - continue; - } - } - - if ( (cir_data[data_index] == 0xff)) { /* last byte */ - //printk("data_index %d\n", data_index); - set_rx_active(cir); -#if 0 - for (j=0; j<=data_index; j++) { - printk("rx_data %d: %x\n", j, cir_data[j]); - } -#endif - data_index = 0; - handle_data(cir_data); - return; - } - else if (data_index>16) { - set_rx_active(cir); -#if 0 - printk("warning: data_index %d\n", data_index); - for (j=0; j<=data_index; j++) { - printk("rx_data %d: %x\n", j, cir_data[j]); - } -#endif - data_index = 0; - clear_fifo(cir); - return; - } - data_index++; - } -} - - -#define NUM_KBD_BYTES 5 -static int handle_data(unsigned char *p_data) -{ - u_int32_t bit_bucket; - u_int32_t i, j; - u_int32_t got_bits, next_byte; - int down = 0; - - /* Reorganize the bit stream */ - for (i=0; i<16; i++) - p_data[i] = BitReverse(~p_data[i]); - - /* - * We've already previously checked that p_data[0] - * is equal to leading1 and that (p_data[1] & 0xf) - * is equal to leading2. These twelve bits are the - * leader code. We can now throw them away (the 12 - * bits) and continue parsing the stream. - */ - bit_bucket = p_data[1] << 12; - got_bits = 4; - next_byte = 2; - - /* - * Process four bits at a time - */ - for (i=0; i<NUM_KBD_BYTES; i++) { - - kbdbytes[i]=0; - - for (j=0; j<8; j++) /* 8 bits per byte */ - { - if (got_bits < 4) { - bit_bucket |= (p_data[next_byte++] << (8 - got_bits)); - got_bits += 8; - } - - if ((bit_bucket & 0xF000) == 0x8000) { - /* Convert 1000b to 1 */ - kbdbytes[i] = 0x80 | (kbdbytes[i] >> 1); - got_bits -= 4; - bit_bucket = bit_bucket << 4; - } - else if ((bit_bucket & 0xC000) == 0x8000) { - /* Convert 10b to 0 */ - kbdbytes[i] = kbdbytes[i] >> 1; - got_bits -= 2; - bit_bucket = bit_bucket << 2; - } - else { - /* bad serial stream */ - return 1; - } - - if (next_byte > 16) { - //printk("error: too many bytes\n"); - return 1; - } - } - } - - - if (!CheckSumOk(kbdbytes[0], kbdbytes[1], - kbdbytes[2], kbdbytes[3], kbdbytes[4])) { - //printk("checksum failed\n"); - return 1; - } - - if (kbdbytes[1] & 0x08) { - //printk("m: %x %x %x\n", kbdbytes[1], kbdbytes[2], kbdbytes[3]); - handle_mouse_event(kbdbytes[1]); - handle_mouse_event(kbdbytes[2]); - handle_mouse_event(kbdbytes[3]); - } - else { - if (kbdbytes[2] == 0) down = 1; -#if 0 - if (down) - printk("down %d\n", kbdbytes[3]); - else - printk("up %d\n", kbdbytes[3]); -#endif - handle_keyboard_event(kbdbytes[3], down); - } - return 0; -} - - -DEFINE_SPINLOCK(kbd_controller_lock); -static unsigned char handle_kbd_event(void); - - -int kbd_setkeycode(unsigned int scancode, unsigned int keycode) -{ - printk("kbd_setkeycode scancode %x keycode %x\n", scancode, keycode); - return 0; -} - -int kbd_getkeycode(unsigned int scancode) -{ - return scancode; -} - - -int kbd_translate(unsigned char scancode, unsigned char *keycode, - char raw_mode) -{ - static int prev_scancode = 0; - - if (scancode == 0x00 || scancode == 0xff) { - prev_scancode = 0; - return 0; - } - - /* todo */ - if (!prev_scancode && scancode == 160) { /* Fn key down */ - //printk("Fn key down\n"); - prev_scancode = 160; - return 0; - } - else if (prev_scancode && scancode == 160) { /* Fn key up */ - //printk("Fn key up\n"); - prev_scancode = 0; - return 0; - } - - /* todo */ - if (prev_scancode == 160) { - if (scancode <= NUM_FN_KEYS) { - *keycode = fn_keys[scancode]; - //printk("fn keycode %d\n", *keycode); - } - else - return 0; - } - else if (scancode <= 127) { - *keycode = scancode; - } - else - return 0; - - - return 1; -} - -char kbd_unexpected_up(unsigned char keycode) -{ - //printk("kbd_unexpected_up\n"); - return 0; -} - -static unsigned char kbd_exists = 1; - -static inline void handle_keyboard_event(unsigned char scancode, int down) -{ - kbd_exists = 1; - handle_scancode(scancode, down); - tasklet_schedule(&keyboard_tasklet); -} - - -void kbd_leds(unsigned char leds) -{ -} - -/* dummy */ -void kbd_init_hw(void) -{ -} - - - -static inline void handle_mouse_event(unsigned char scancode) -{ - if(scancode == AUX_RECONNECT){ - queue->head = queue->tail = 0; /* Flush input queue */ - // __aux_write_ack(AUX_ENABLE_DEV); /* ping the mouse :) */ - return; - } - - if (aux_count) { - int head = queue->head; - - queue->buf[head] = scancode; - head = (head + 1) & (AUX_BUF_SIZE-1); - if (head != queue->tail) { - queue->head = head; - kill_fasync(&queue->fasync, SIGIO, POLL_IN); - wake_up_interruptible(&queue->proc_list); - } - } -} - -static unsigned char get_from_queue(void) -{ - unsigned char result; - unsigned long flags; - - spin_lock_irqsave(&kbd_controller_lock, flags); - result = queue->buf[queue->tail]; - queue->tail = (queue->tail + 1) & (AUX_BUF_SIZE-1); - spin_unlock_irqrestore(&kbd_controller_lock, flags); - return result; -} - - -static inline int queue_empty(void) -{ - return queue->head == queue->tail; -} - -static int fasync_aux(int fd, struct file *filp, int on) -{ - int retval; - - //printk("fasync_aux\n"); - retval = fasync_helper(fd, filp, on, &queue->fasync); - if (retval < 0) - return retval; - return 0; -} - - -/* - * Random magic cookie for the aux device - */ -#define AUX_DEV ((void *)queue) - -static int release_aux(struct inode * inode, struct file * file) -{ - fasync_aux(-1, file, 0); - aux_count--; - return 0; -} - -static int open_aux(struct inode * inode, struct file * file) -{ - if (aux_count++) { - return 0; - } - queue->head = queue->tail = 0; /* Flush input queue */ - return 0; -} - -/* - * Put bytes from input queue to buffer. - */ - -static ssize_t read_aux(struct file * file, char * buffer, - size_t count, loff_t *ppos) -{ - DECLARE_WAITQUEUE(wait, current); - ssize_t i = count; - unsigned char c; - - if (queue_empty()) { - if (file->f_flags & O_NONBLOCK) - return -EAGAIN; - add_wait_queue(&queue->proc_list, &wait); -repeat: - set_current_state(TASK_INTERRUPTIBLE); - if (queue_empty() && !signal_pending(current)) { - schedule(); - goto repeat; - } - current->state = TASK_RUNNING; - remove_wait_queue(&queue->proc_list, &wait); - } - while (i > 0 && !queue_empty()) { - c = get_from_queue(); - put_user(c, buffer++); - i--; - } - if (count-i) { - struct inode *inode = file->f_dentry->d_inode; - inode->i_atime = current_fs_time(inode->i_sb); - return count-i; - } - if (signal_pending(current)) - return -ERESTARTSYS; - return 0; -} - -/* - * Write to the aux device. - */ - -static ssize_t write_aux(struct file * file, const char * buffer, - size_t count, loff_t *ppos) -{ - /* - * The ITE boards this was tested on did not have the - * transmit wires connected. - */ - return count; -} - -static unsigned int aux_poll(struct file *file, poll_table * wait) -{ - poll_wait(file, &queue->proc_list, wait); - if (!queue_empty()) - return POLLIN | POLLRDNORM; - return 0; -} - -struct file_operations psaux_fops = { - .read = read_aux, - .write = write_aux, - .poll = aux_poll, - .open = open_aux, - .release = release_aux, - .fasync = fasync_aux, -}; - -/* - * Initialize driver. - */ -static struct miscdevice psaux_mouse = { - PSMOUSE_MINOR, "psaux", &psaux_fops -}; - -static int __init psaux_init(void) -{ - int retval; - - retval = misc_register(&psaux_mouse); - if(retval < 0) - return retval; - - queue = (struct aux_queue *) kmalloc(sizeof(*queue), GFP_KERNEL); - if (!queue) { - misc_deregister(&psaux_mouse); - return -ENOMEM; - } - - memset(queue, 0, sizeof(*queue)); - queue->head = queue->tail = 0; - init_waitqueue_head(&queue->proc_list); - - return 0; -} -module_init(init_qtronix_990P_kbd); -#endif |
