diff options
Diffstat (limited to 'drivers/input/keyboard/newtonkbd.c')
| -rw-r--r-- | drivers/input/keyboard/newtonkbd.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/drivers/input/keyboard/newtonkbd.c b/drivers/input/keyboard/newtonkbd.c new file mode 100644 index 00000000000..2e8ce1613ee --- /dev/null +++ b/drivers/input/keyboard/newtonkbd.c @@ -0,0 +1,184 @@ +/* + * Copyright (c) 2000 Justin Cormack + */ + +/* + * Newton 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 <j.cormack@doc.ic.ac.uk>, or by paper mail: + * Justin Cormack, 68 Dartmouth Park Road, London NW5 1SN, UK. + */ + +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/input.h> +#include <linux/init.h> +#include <linux/serio.h> + +#define DRIVER_DESC "Newton keyboard driver" + +MODULE_AUTHOR("Justin Cormack <j.cormack@doc.ic.ac.uk>"); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +#define NKBD_KEY 0x7f +#define NKBD_PRESS 0x80 + +static unsigned char nkbd_keycode[128] = { + KEY_A, KEY_S, KEY_D, KEY_F, KEY_H, KEY_G, KEY_Z, KEY_X, + KEY_C, KEY_V, 0, KEY_B, KEY_Q, KEY_W, KEY_E, KEY_R, + KEY_Y, KEY_T, KEY_1, KEY_2, KEY_3, KEY_4, KEY_6, KEY_5, + KEY_EQUAL, KEY_9, KEY_7, KEY_MINUS, KEY_8, KEY_0, KEY_RIGHTBRACE, KEY_O, + KEY_U, KEY_LEFTBRACE, KEY_I, KEY_P, KEY_ENTER, KEY_L, KEY_J, KEY_APOSTROPHE, + KEY_K, KEY_SEMICOLON, KEY_BACKSLASH, KEY_COMMA, KEY_SLASH, KEY_N, KEY_M, KEY_DOT, + KEY_TAB, KEY_SPACE, KEY_GRAVE, KEY_DELETE, 0, 0, 0, KEY_LEFTMETA, + KEY_LEFTSHIFT, KEY_CAPSLOCK, KEY_LEFTALT, KEY_LEFTCTRL, KEY_RIGHTSHIFT, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + KEY_LEFT, KEY_RIGHT, KEY_DOWN, KEY_UP, 0 +}; + +static char *nkbd_name = "Newton Keyboard"; + +struct nkbd { + unsigned char keycode[128]; + struct input_dev dev; + struct serio *serio; + char phys[32]; +}; + +static irqreturn_t nkbd_interrupt(struct serio *serio, + unsigned char data, unsigned int flags, struct pt_regs *regs) +{ + struct nkbd *nkbd = serio_get_drvdata(serio); + + /* invalid scan codes are probably the init sequence, so we ignore them */ + if (nkbd->keycode[data & NKBD_KEY]) { + input_regs(&nkbd->dev, regs); + input_report_key(&nkbd->dev, nkbd->keycode[data & NKBD_KEY], data & NKBD_PRESS); + input_sync(&nkbd->dev); + } + + else if (data == 0xe7) /* end of init sequence */ + printk(KERN_INFO "input: %s on %s\n", nkbd_name, serio->phys); + return IRQ_HANDLED; + +} + +static int nkbd_connect(struct serio *serio, struct serio_driver *drv) +{ + struct nkbd *nkbd; + int i; + int err; + + if (!(nkbd = kmalloc(sizeof(struct nkbd), GFP_KERNEL))) + return -ENOMEM; + + memset(nkbd, 0, sizeof(struct nkbd)); + + nkbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REP); + + nkbd->serio = serio; + + init_input_dev(&nkbd->dev); + nkbd->dev.keycode = nkbd->keycode; + nkbd->dev.keycodesize = sizeof(unsigned char); + nkbd->dev.keycodemax = ARRAY_SIZE(nkbd_keycode); + nkbd->dev.private = nkbd; + + serio_set_drvdata(serio, nkbd); + + err = serio_open(serio, drv); + if (err) { + serio_set_drvdata(serio, NULL); + kfree(nkbd); + return err; + } + + memcpy(nkbd->keycode, nkbd_keycode, sizeof(nkbd->keycode)); + for (i = 0; i < 128; i++) + set_bit(nkbd->keycode[i], nkbd->dev.keybit); + clear_bit(0, nkbd->dev.keybit); + + sprintf(nkbd->phys, "%s/input0", serio->phys); + + nkbd->dev.name = nkbd_name; + nkbd->dev.phys = nkbd->phys; + nkbd->dev.id.bustype = BUS_RS232; + nkbd->dev.id.vendor = SERIO_NEWTON; + nkbd->dev.id.product = 0x0001; + nkbd->dev.id.version = 0x0100; + nkbd->dev.dev = &serio->dev; + + input_register_device(&nkbd->dev); + + printk(KERN_INFO "input: %s on %s\n", nkbd_name, serio->phys); + + return 0; +} + +static void nkbd_disconnect(struct serio *serio) +{ + struct nkbd *nkbd = serio_get_drvdata(serio); + + input_unregister_device(&nkbd->dev); + serio_close(serio); + serio_set_drvdata(serio, NULL); + kfree(nkbd); +} + +static struct serio_device_id nkbd_serio_ids[] = { + { + .type = SERIO_RS232, + .proto = SERIO_NEWTON, + .id = SERIO_ANY, + .extra = SERIO_ANY, + }, + { 0 } +}; + +MODULE_DEVICE_TABLE(serio, nkbd_serio_ids); + +static struct serio_driver nkbd_drv = { + .driver = { + .name = "newtonkbd", + }, + .description = DRIVER_DESC, + .id_table = nkbd_serio_ids, + .interrupt = nkbd_interrupt, + .connect = nkbd_connect, + .disconnect = nkbd_disconnect, +}; + +static int __init nkbd_init(void) +{ + serio_register_driver(&nkbd_drv); + return 0; +} + +static void __exit nkbd_exit(void) +{ + serio_unregister_driver(&nkbd_drv); +} + +module_init(nkbd_init); +module_exit(nkbd_exit); |