| /* |
| * $Id: sunkbd.c,v 1.14 2001/09/25 10:12:07 vojtech Exp $ |
| * |
| * Copyright (c) 1999-2001 Vojtech Pavlik |
| */ |
| |
| /* |
| * Sun keyboard driver for Linux |
| */ |
| |
| /* |
| * 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 program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| * Should you need to contact me, the author, you can do so either by |
| * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: |
| * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic |
| */ |
| |
| #include <linux/delay.h> |
| #include <linux/slab.h> |
| #include <linux/module.h> |
| #include <linux/interrupt.h> |
| #include <linux/init.h> |
| #include <linux/input.h> |
| #include <linux/serio.h> |
| #include <linux/workqueue.h> |
| |
| #define DRIVER_DESC "Sun keyboard driver" |
| |
| MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_LICENSE("GPL"); |
| |
| static unsigned char sunkbd_keycode[128] = { |
| 0,128,114,129,115, 59, 60, 68, 61, 87, 62, 88, 63,100, 64,112, |
| 65, 66, 67, 56,103,119, 99, 70,105,130,131,108,106, 1, 2, 3, |
| 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 41, 14,110,113, 98, 55, |
| 116,132, 83,133,102, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, |
| 26, 27,111,127, 71, 72, 73, 74,134,135,107, 0, 29, 30, 31, 32, |
| 33, 34, 35, 36, 37, 38, 39, 40, 43, 28, 96, 75, 76, 77, 82,136, |
| 104,137, 69, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54,101, |
| 79, 80, 81, 0, 0, 0,138, 58,125, 57,126,109, 86, 78 |
| }; |
| |
| #define SUNKBD_CMD_RESET 0x1 |
| #define SUNKBD_CMD_BELLON 0x2 |
| #define SUNKBD_CMD_BELLOFF 0x3 |
| #define SUNKBD_CMD_CLICK 0xa |
| #define SUNKBD_CMD_NOCLICK 0xb |
| #define SUNKBD_CMD_SETLED 0xe |
| #define SUNKBD_CMD_LAYOUT 0xf |
| |
| #define SUNKBD_RET_RESET 0xff |
| #define SUNKBD_RET_ALLUP 0x7f |
| #define SUNKBD_RET_LAYOUT 0xfe |
| |
| #define SUNKBD_LAYOUT_5_MASK 0x20 |
| #define SUNKBD_RELEASE 0x80 |
| #define SUNKBD_KEY 0x7f |
| |
| /* |
| * Per-keyboard data. |
| */ |
| |
| struct sunkbd { |
| unsigned char keycode[128]; |
| struct input_dev *dev; |
| struct serio *serio; |
| struct work_struct tq; |
| wait_queue_head_t wait; |
| char name[64]; |
| char phys[32]; |
| char type; |
| unsigned char enabled; |
| volatile s8 reset; |
| volatile s8 layout; |
| }; |
| |
| /* |
| * sunkbd_interrupt() is called by the low level driver when a character |
| * is received. |
| */ |
| |
| static irqreturn_t sunkbd_interrupt(struct serio *serio, |
| unsigned char data, unsigned int flags, struct pt_regs *regs) |
| { |
| struct sunkbd* sunkbd = serio_get_drvdata(serio); |
| |
| if (sunkbd->reset <= -1) { /* If cp[i] is 0xff, sunkbd->reset will stay -1. */ |
| sunkbd->reset = data; /* The keyboard sends 0xff 0xff 0xID on powerup */ |
| wake_up_interruptible(&sunkbd->wait); |
| goto out; |
| } |
| |
| if (sunkbd->layout == -1) { |
| sunkbd->layout = data; |
| wake_up_interruptible(&sunkbd->wait); |
| goto out; |
| } |
| |
| switch (data) { |
| |
| case SUNKBD_RET_RESET: |
| schedule_work(&sunkbd->tq); |
| sunkbd->reset = -1; |
| break; |
| |
| case SUNKBD_RET_LAYOUT: |
| sunkbd->layout = -1; |
| break; |
| |
| case SUNKBD_RET_ALLUP: /* All keys released */ |
| break; |
| |
| default: |
| if (!sunkbd->enabled) |
| break; |
| |
| if (sunkbd->keycode[data & SUNKBD_KEY]) { |
| input_regs(sunkbd->dev, regs); |
| input_report_key(sunkbd->dev, sunkbd->keycode[data & SUNKBD_KEY], !(data & SUNKBD_RELEASE)); |
| input_sync(sunkbd->dev); |
| } else { |
| printk(KERN_WARNING "sunkbd.c: Unknown key (scancode %#x) %s.\n", |
| data & SUNKBD_KEY, data & SUNKBD_RELEASE ? "released" : "pressed"); |
| } |
| } |
| out: |
| return IRQ_HANDLED; |
| } |
| |
| /* |
| * sunkbd_event() handles events from the input module. |
| */ |
| |
| static int sunkbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
| { |
| struct sunkbd *sunkbd = dev->private; |
| |
| switch (type) { |
| |
| case EV_LED: |
| |
| sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_SETLED); |
| sunkbd->serio->write(sunkbd->serio, |
| (!!test_bit(LED_CAPSL, dev->led) << 3) | (!!test_bit(LED_SCROLLL, dev->led) << 2) | |
| (!!test_bit(LED_COMPOSE, dev->led) << 1) | !!test_bit(LED_NUML, dev->led)); |
| return 0; |
| |
| case EV_SND: |
| |
| switch (code) { |
| |
| case SND_CLICK: |
| sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_NOCLICK - value); |
| return 0; |
| |
| case SND_BELL: |
| sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_BELLOFF - value); |
| return 0; |
| } |
| |
| break; |
| } |
| |
| return -1; |
| } |
| |
| /* |
| * sunkbd_initialize() checks for a Sun keyboard attached, and determines |
| * its type. |
| */ |
| |
| static int sunkbd_initialize(struct sunkbd *sunkbd) |
| { |
| sunkbd->reset = -2; |
| sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_RESET); |
| wait_event_interruptible_timeout(sunkbd->wait, sunkbd->reset >= 0, HZ); |
| if (sunkbd->reset < 0) |
| return -1; |
| |
| sunkbd->type = sunkbd->reset; |
| |
| if (sunkbd->type == 4) { /* Type 4 keyboard */ |
| sunkbd->layout = -2; |
| sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_LAYOUT); |
| wait_event_interruptible_timeout(sunkbd->wait, sunkbd->layout >= 0, HZ/4); |
| if (sunkbd->layout < 0) return -1; |
| if (sunkbd->layout & SUNKBD_LAYOUT_5_MASK) sunkbd->type = 5; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * sunkbd_reinit() sets leds and beeps to a state the computer remembers they |
| * were in. |
| */ |
| |
| static void sunkbd_reinit(void *data) |
| { |
| struct sunkbd *sunkbd = data; |
| |
| wait_event_interruptible_timeout(sunkbd->wait, sunkbd->reset >= 0, HZ); |
| |
| sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_SETLED); |
| sunkbd->serio->write(sunkbd->serio, |
| (!!test_bit(LED_CAPSL, sunkbd->dev->led) << 3) | (!!test_bit(LED_SCROLLL, sunkbd->dev->led) << 2) | |
| (!!test_bit(LED_COMPOSE, sunkbd->dev->led) << 1) | !!test_bit(LED_NUML, sunkbd->dev->led)); |
| sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_NOCLICK - !!test_bit(SND_CLICK, sunkbd->dev->snd)); |
| sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_BELLOFF - !!test_bit(SND_BELL, sunkbd->dev->snd)); |
| } |
| |
| static void sunkbd_enable(struct sunkbd *sunkbd, int enable) |
| { |
| serio_pause_rx(sunkbd->serio); |
| sunkbd->enabled = 1; |
| serio_continue_rx(sunkbd->serio); |
| } |
| |
| /* |
| * sunkbd_connect() probes for a Sun keyboard and fills the necessary structures. |
| */ |
| |
| static int sunkbd_connect(struct serio *serio, struct serio_driver *drv) |
| { |
| struct sunkbd *sunkbd; |
| struct input_dev *input_dev; |
| int err = -ENOMEM; |
| int i; |
| |
| sunkbd = kzalloc(sizeof(struct sunkbd), GFP_KERNEL); |
| input_dev = input_allocate_device(); |
| if (!sunkbd || !input_dev) |
| goto fail; |
| |
| sunkbd->serio = serio; |
| sunkbd->dev = input_dev; |
| init_waitqueue_head(&sunkbd->wait); |
| INIT_WORK(&sunkbd->tq, sunkbd_reinit, sunkbd); |
| snprintf(sunkbd->phys, sizeof(sunkbd->phys), "%s/input0", serio->phys); |
| |
| serio_set_drvdata(serio, sunkbd); |
| |
| err = serio_open(serio, drv); |
| if (err) |
| goto fail; |
| |
| if (sunkbd_initialize(sunkbd) < 0) { |
| serio_close(serio); |
| goto fail; |
| } |
| |
| snprintf(sunkbd->name, sizeof(sunkbd->name), "Sun Type %d keyboard", sunkbd->type); |
| memcpy(sunkbd->keycode, sunkbd_keycode, sizeof(sunkbd->keycode)); |
| |
| input_dev->name = sunkbd->name; |
| input_dev->phys = sunkbd->phys; |
| input_dev->id.bustype = BUS_RS232; |
| input_dev->id.vendor = SERIO_SUNKBD; |
| input_dev->id.product = sunkbd->type; |
| input_dev->id.version = 0x0100; |
| input_dev->cdev.dev = &serio->dev; |
| input_dev->private = sunkbd; |
| input_dev->event = sunkbd_event; |
| |
| input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_SND) | BIT(EV_REP); |
| input_dev->ledbit[0] = BIT(LED_CAPSL) | BIT(LED_COMPOSE) | BIT(LED_SCROLLL) | BIT(LED_NUML); |
| input_dev->sndbit[0] = BIT(SND_CLICK) | BIT(SND_BELL); |
| |
| input_dev->keycode = sunkbd->keycode; |
| input_dev->keycodesize = sizeof(unsigned char); |
| input_dev->keycodemax = ARRAY_SIZE(sunkbd_keycode); |
| for (i = 0; i < 128; i++) |
| set_bit(sunkbd->keycode[i], input_dev->keybit); |
| clear_bit(0, input_dev->keybit); |
| |
| sunkbd_enable(sunkbd, 1); |
| input_register_device(sunkbd->dev); |
| return 0; |
| |
| fail: serio_set_drvdata(serio, NULL); |
| input_free_device(input_dev); |
| kfree(sunkbd); |
| return err; |
| } |
| |
| /* |
| * sunkbd_disconnect() unregisters and closes behind us. |
| */ |
| |
| static void sunkbd_disconnect(struct serio *serio) |
| { |
| struct sunkbd *sunkbd = serio_get_drvdata(serio); |
| |
| sunkbd_enable(sunkbd, 0); |
| input_unregister_device(sunkbd->dev); |
| serio_close(serio); |
| serio_set_drvdata(serio, NULL); |
| kfree(sunkbd); |
| } |
| |
| static struct serio_device_id sunkbd_serio_ids[] = { |
| { |
| .type = SERIO_RS232, |
| .proto = SERIO_SUNKBD, |
| .id = SERIO_ANY, |
| .extra = SERIO_ANY, |
| }, |
| { |
| .type = SERIO_RS232, |
| .proto = SERIO_UNKNOWN, /* sunkbd does probe */ |
| .id = SERIO_ANY, |
| .extra = SERIO_ANY, |
| }, |
| { 0 } |
| }; |
| |
| MODULE_DEVICE_TABLE(serio, sunkbd_serio_ids); |
| |
| static struct serio_driver sunkbd_drv = { |
| .driver = { |
| .name = "sunkbd", |
| }, |
| .description = DRIVER_DESC, |
| .id_table = sunkbd_serio_ids, |
| .interrupt = sunkbd_interrupt, |
| .connect = sunkbd_connect, |
| .disconnect = sunkbd_disconnect, |
| }; |
| |
| /* |
| * The functions for insering/removing us as a module. |
| */ |
| |
| static int __init sunkbd_init(void) |
| { |
| serio_register_driver(&sunkbd_drv); |
| return 0; |
| } |
| |
| static void __exit sunkbd_exit(void) |
| { |
| serio_unregister_driver(&sunkbd_drv); |
| } |
| |
| module_init(sunkbd_init); |
| module_exit(sunkbd_exit); |