diff options
Diffstat (limited to 'drivers/input/keyboard/amikbd.c')
| -rw-r--r-- | drivers/input/keyboard/amikbd.c | 241 |
1 files changed, 241 insertions, 0 deletions
diff --git a/drivers/input/keyboard/amikbd.c b/drivers/input/keyboard/amikbd.c new file mode 100644 index 000000000000..4e8e8ea214ab --- /dev/null +++ b/drivers/input/keyboard/amikbd.c @@ -0,0 +1,241 @@ +/* + * $Id: amikbd.c,v 1.13 2002/02/01 16:02:24 vojtech Exp $ + * + * Copyright (c) 2000-2001 Vojtech Pavlik + * + * Based on the work of: + * Hamish Macdonald + */ + +/* + * Amiga keyboard driver for Linux/m68k + */ + +/* + * 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/module.h> +#include <linux/init.h> +#include <linux/input.h> +#include <linux/delay.h> +#include <linux/interrupt.h> + +#include <asm/amigaints.h> +#include <asm/amigahw.h> +#include <asm/irq.h> + +MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); +MODULE_DESCRIPTION("Amiga keyboard driver"); +MODULE_LICENSE("GPL"); + +static unsigned char amikbd_keycode[0x78] = { + [0] = KEY_GRAVE, + [1] = KEY_1, + [2] = KEY_2, + [3] = KEY_3, + [4] = KEY_4, + [5] = KEY_5, + [6] = KEY_6, + [7] = KEY_7, + [8] = KEY_8, + [9] = KEY_9, + [10] = KEY_0, + [11] = KEY_MINUS, + [12] = KEY_EQUAL, + [13] = KEY_BACKSLASH, + [15] = KEY_KP0, + [16] = KEY_Q, + [17] = KEY_W, + [18] = KEY_E, + [19] = KEY_R, + [20] = KEY_T, + [21] = KEY_Y, + [22] = KEY_U, + [23] = KEY_I, + [24] = KEY_O, + [25] = KEY_P, + [26] = KEY_LEFTBRACE, + [27] = KEY_RIGHTBRACE, + [29] = KEY_KP1, + [30] = KEY_KP2, + [31] = KEY_KP3, + [32] = KEY_A, + [33] = KEY_S, + [34] = KEY_D, + [35] = KEY_F, + [36] = KEY_G, + [37] = KEY_H, + [38] = KEY_J, + [39] = KEY_K, + [40] = KEY_L, + [41] = KEY_SEMICOLON, + [42] = KEY_APOSTROPHE, + [43] = KEY_BACKSLASH, + [45] = KEY_KP4, + [46] = KEY_KP5, + [47] = KEY_KP6, + [48] = KEY_102ND, + [49] = KEY_Z, + [50] = KEY_X, + [51] = KEY_C, + [52] = KEY_V, + [53] = KEY_B, + [54] = KEY_N, + [55] = KEY_M, + [56] = KEY_COMMA, + [57] = KEY_DOT, + [58] = KEY_SLASH, + [60] = KEY_KPDOT, + [61] = KEY_KP7, + [62] = KEY_KP8, + [63] = KEY_KP9, + [64] = KEY_SPACE, + [65] = KEY_BACKSPACE, + [66] = KEY_TAB, + [67] = KEY_KPENTER, + [68] = KEY_ENTER, + [69] = KEY_ESC, + [70] = KEY_DELETE, + [74] = KEY_KPMINUS, + [76] = KEY_UP, + [77] = KEY_DOWN, + [78] = KEY_RIGHT, + [79] = KEY_LEFT, + [80] = KEY_F1, + [81] = KEY_F2, + [82] = KEY_F3, + [83] = KEY_F4, + [84] = KEY_F5, + [85] = KEY_F6, + [86] = KEY_F7, + [87] = KEY_F8, + [88] = KEY_F9, + [89] = KEY_F10, + [90] = KEY_KPLEFTPAREN, + [91] = KEY_KPRIGHTPAREN, + [92] = KEY_KPSLASH, + [93] = KEY_KPASTERISK, + [94] = KEY_KPPLUS, + [95] = KEY_HELP, + [96] = KEY_LEFTSHIFT, + [97] = KEY_RIGHTSHIFT, + [98] = KEY_CAPSLOCK, + [99] = KEY_LEFTCTRL, + [100] = KEY_LEFTALT, + [101] = KEY_RIGHTALT, + [102] = KEY_LEFTMETA, + [103] = KEY_RIGHTMETA +}; + +static const char *amikbd_messages[8] = { + [0] = KERN_ALERT "amikbd: Ctrl-Amiga-Amiga reset warning!!\n", + [1] = KERN_WARNING "amikbd: keyboard lost sync\n", + [2] = KERN_WARNING "amikbd: keyboard buffer overflow\n", + [3] = KERN_WARNING "amikbd: keyboard controller failure\n", + [4] = KERN_ERR "amikbd: keyboard selftest failure\n", + [5] = KERN_INFO "amikbd: initiate power-up key stream\n", + [6] = KERN_INFO "amikbd: terminate power-up key stream\n", + [7] = KERN_WARNING "amikbd: keyboard interrupt\n" +}; + +static struct input_dev amikbd_dev; + +static char *amikbd_name = "Amiga keyboard"; +static char *amikbd_phys = "amikbd/input0"; + +static irqreturn_t amikbd_interrupt(int irq, void *dummy, struct pt_regs *fp) +{ + unsigned char scancode, down; + + scancode = ~ciaa.sdr; /* get and invert scancode (keyboard is active low) */ + ciaa.cra |= 0x40; /* switch SP pin to output for handshake */ + udelay(85); /* wait until 85 us have expired */ + ciaa.cra &= ~0x40; /* switch CIA serial port to input mode */ + + down = !(scancode & 1); /* lowest bit is release bit */ + scancode >>= 1; + + if (scancode < 0x78) { /* scancodes < 0x78 are keys */ + + scancode = amikbd_keycode[scancode]; + + input_regs(&amikbd_dev, fp); + + if (scancode == KEY_CAPSLOCK) { /* CapsLock is a toggle switch key on Amiga */ + input_report_key(&amikbd_dev, scancode, 1); + input_report_key(&amikbd_dev, scancode, 0); + input_sync(&amikbd_dev); + } else { + input_report_key(&amikbd_dev, scancode, down); + input_sync(&amikbd_dev); + } + } else /* scancodes >= 0x78 are error codes */ + printk(amikbd_messages[scancode - 0x78]); + + return IRQ_HANDLED; +} + +static int __init amikbd_init(void) +{ + int i; + + if (!AMIGAHW_PRESENT(AMI_KEYBOARD)) + return -EIO; + + if (!request_mem_region(CIAA_PHYSADDR-1+0xb00, 0x100, "amikeyb")) + return -EBUSY; + + init_input_dev(&amikbd_dev); + + amikbd_dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REP); + amikbd_dev.keycode = amikbd_keycode; + amikbd_dev.keycodesize = sizeof(unsigned char); + amikbd_dev.keycodemax = ARRAY_SIZE(amikbd_keycode); + + for (i = 0; i < 0x78; i++) + if (amikbd_keycode[i]) + set_bit(amikbd_keycode[i], amikbd_dev.keybit); + + ciaa.cra &= ~0x41; /* serial data in, turn off TA */ + request_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt, 0, "amikbd", amikbd_interrupt); + + amikbd_dev.name = amikbd_name; + amikbd_dev.phys = amikbd_phys; + amikbd_dev.id.bustype = BUS_AMIGA; + amikbd_dev.id.vendor = 0x0001; + amikbd_dev.id.product = 0x0001; + amikbd_dev.id.version = 0x0100; + + input_register_device(&amikbd_dev); + + printk(KERN_INFO "input: %s\n", amikbd_name); + + return 0; +} + +static void __exit amikbd_exit(void) +{ + input_unregister_device(&amikbd_dev); + free_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt); + release_mem_region(CIAA_PHYSADDR-1+0xb00, 0x100); +} + +module_init(amikbd_init); +module_exit(amikbd_exit); |