/* * $Id: rpckbd.c,v 1.7 2001/09/25 10:12:07 vojtech Exp $ * * Copyright (c) 2000-2001 Vojtech Pavlik * * Based on the work of: * unknown author */ /* * Acorn RiscPC PS/2 keyboard controller driver for Linux/ARM */ /* * 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/serio.h> #include <asm/irq.h> #include <asm/hardware.h> #include <asm/io.h> #include <asm/iomd.h> #include <asm/system.h> MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); MODULE_DESCRIPTION("Acorn RiscPC PS/2 keyboard controller driver"); MODULE_LICENSE("GPL"); static inline void rpckbd_write(unsigned char val) { while(!(inb(IOMD_KCTRL) & (1 << 7))); outb(val, IOMD_KARTTX); } static struct serio rpckbd_port = { type: SERIO_8042, write: rpckbd_write, name: "RiscPC PS/2 kbd port", phys: "rpckbd/serio0", }; static void rpckbd_rx(int irq, void *dev_id, struct pt_regs *regs) { kbd_pt_regs = regs; while (inb(IOMD_KCTRL) & (1 << 5)) if (rpckbd_port.dev) rpckbd_port.dev->interrupt(&rpckbd_port, inb(IOMD_KARTRX), 0); } static void rpckbd_tx(int irq, void *dev_id, struct pt_regs *regs) { } static int __init rpckbd_init(void) { unsigned long flags; /* Reset the keyboard state machine. */ outb(0, IOMD_KCTRL); outb(8, IOMD_KCTRL); save_flags_cli(flags); if (request_irq(IRQ_KEYBOARDRX, rpckbd_rx, 0, "rpckbd", NULL) != 0) { printk(KERN_ERR "rpckbd.c: Could not allocate keyboard receive IRQ!\n") return -EBUSY; } if (request_irq(IRQ_KEYBOARDTX, rpckbd_tx, 0, "rpckbd", NULL) != 0) { printk(KERN_ERR "rpckbd.c: Could not allocate keyboard transmit IRQ!\n") free_irq(IRQ_KEYBOARDRX, NULL); return -EBUSY; } disable_irq(IRQ_KEYBOARDTX); (void)IOMD_KARTRX; restore_flags(flags); register_serio_port(&rpckbd_port); printk(KERN_INFO "serio: RiscPC PS/2 kbd port irq %d %d\n", IRQ_KEYBOARDRX, IRQ_KEYBOARDTX); return 0; } static void __exit rpckbd_exit(void) { free_irq(IRQ_KEYBOARDRX, NULL); free_irq(IRQ_KEYBOARDTX, NULL); unregister_serio_port(&rpckbd_port); } module_init(rpckbd_init); module_exit(rpckbd_exit);