diff options
Diffstat (limited to 'include/asm-alpha/keyboard.h')
| -rw-r--r-- | include/asm-alpha/keyboard.h | 200 |
1 files changed, 43 insertions, 157 deletions
diff --git a/include/asm-alpha/keyboard.h b/include/asm-alpha/keyboard.h index bd3eda91d..1edaa52bb 100644 --- a/include/asm-alpha/keyboard.h +++ b/include/asm-alpha/keyboard.h @@ -1,177 +1,63 @@ /* - * CPU specific parts of the keyboard driver + * linux/include/asm-alpha/keyboard.h * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. + * Created 3 Nov 1996 by Geert Uytterhoeven */ -#ifndef __ASM_ALPHA_KEYBOARD_H -#define __ASM_ALPHA_KEYBOARD_H +/* + * This file contains the alpha architecture specific keyboard definitions + */ + +#ifndef _ALPHA_KEYBOARD_H +#define _ALPHA_KEYBOARD_H + +#ifdef __KERNEL__ + +#include <linux/ioport.h> #include <asm/io.h> -#define KEYBOARD_IRQ 1 +#define KEYBOARD_IRQ 1 +#define DISABLE_KBD_DURING_INTERRUPTS 0 #define KBD_REPORT_ERR +#define KBD_REPORT_UNKN +/* #define KBD_IS_FOCUS_9000 */ + +extern int pckbd_setkeycode(unsigned int scancode, unsigned int keycode); +extern int pckbd_getkeycode(unsigned int scancode); +extern int pckbd_pretranslate(unsigned char scancode, char raw_mode); +extern int pckbd_translate(unsigned char scancode, unsigned char *keycode, + char raw_mode); +extern char pckbd_unexpected_up(unsigned char keycode); +extern void pckbd_leds(unsigned char leds); +extern void pckbd_init_hw(void); + +#define kbd_setkeycode pckbd_setkeycode +#define kbd_getkeycode pckbd_getkeycode +#define kbd_pretranslate pckbd_pretranslate +#define kbd_translate pckbd_translate +#define kbd_unexpected_up pckbd_unexpected_up +#define kbd_leds pckbd_leds +#define kbd_init_hw pckbd_init_hw + +#define INIT_KBD -__initfunc(static int initialize_kbd(void)); +/* + * keyboard controller registers + */ +#define KBD_STATUS_REG (unsigned int) 0x64 +#define KBD_CNTL_REG (unsigned int) 0x64 +#define KBD_DATA_REG (unsigned int) 0x60 #define kbd_inb_p(port) inb_p(port) #define kbd_inb(port) inb(port) #define kbd_outb_p(data,port) outb_p(data,port) #define kbd_outb(data,port) outb(data,port) -static int -kbd_wait_for_input(void) -{ - int n; - int status, data; - - n = TIMEOUT_CONST; - do { - status = kbd_inb(KBD_STATUS_REG); - /* - * Wait for input data to become available. This bit will - * then be cleared by the following read of the DATA - * register. - */ - - if (!(status & KBD_OBF)) - continue; - - data = kbd_inb(KBD_DATA_REG); - - /* - * Check to see if a timeout error has occurred. This means - * that transmission was started but did not complete in the - * normal time cycle. PERR is set when a parity error occurred - * in the last transmission. - */ - if (status & (KBD_GTO | KBD_PERR)) { - continue; - } - return (data & 0xff); - } while (--n); - return (-1); /* timed-out if fell through to here... */ -} - -static void -kbd_write(int address, int data) -{ - int status; - - do { - status = kbd_inb(KBD_STATUS_REG); /* spin until input buffer empty*/ - } while (status & KBD_IBF); - kbd_outb(data, address); /* write out the data*/ -} - -__initfunc(static int initialize_kbd(void)) -{ - unsigned long flags; - - save_flags(flags); cli(); - - /* Flush any pending input. */ - while (kbd_wait_for_input() != -1) - continue; - - /* - * Test the keyboard interface. - * This seems to be the only way to get it going. - * If the test is successful a x55 is placed in the input buffer. - */ - kbd_write(KBD_CNTL_REG, KBD_SELF_TEST); - if (kbd_wait_for_input() != 0x55) { - printk(KERN_WARNING "initialize_kbd: " - "keyboard failed self test.\n"); - restore_flags(flags); - return(-1); - } - - /* - * Perform a keyboard interface test. This causes the controller - * to test the keyboard clock and data lines. The results of the - * test are placed in the input buffer. - */ - kbd_write(KBD_CNTL_REG, KBD_SELF_TEST2); - if (kbd_wait_for_input() != 0x00) { - printk(KERN_WARNING "initialize_kbd: " - "keyboard failed self test 2.\n"); - restore_flags(flags); - return(-1); - } - - /* Enable the keyboard by allowing the keyboard clock to run. */ - kbd_write(KBD_CNTL_REG, KBD_CNTL_ENABLE); - - /* - * Reset keyboard. If the read times out - * then the assumption is that no keyboard is - * plugged into the machine. - * This defaults the keyboard to scan-code set 2. - */ - kbd_write(KBD_DATA_REG, KBD_RESET); - if (kbd_wait_for_input() != KBD_ACK) { - printk(KERN_WARNING "initialize_kbd: " - "reset kbd failed, no ACK.\n"); - restore_flags(flags); - return(-1); - } - - /* - * Give the keyboard some time to breathe ... - * ... or it fucks up the floppy controller, too. Wiered. - */ - udelay(20); - - if (kbd_wait_for_input() != KBD_POR) { - printk(KERN_WARNING "initialize_kbd: " - "reset kbd failed, not POR.\n"); - restore_flags(flags); - return(-1); - } - - /* - * now do a DEFAULTS_DISABLE always - */ - kbd_write(KBD_DATA_REG, KBD_DISABLE); - if (kbd_wait_for_input() != KBD_ACK) { - printk(KERN_WARNING "initialize_kbd: " - "disable kbd failed, no ACK.\n"); - restore_flags(flags); - return(-1); - } - - /* - * Enable keyboard interrupt, operate in "sys" mode, - * enable keyboard (by clearing the disable keyboard bit), - * disable mouse, do conversion of keycodes. - */ - kbd_write(KBD_CNTL_REG, KBD_WRITE_MODE); - kbd_write(KBD_DATA_REG, KBD_EKI|KBD_SYS|KBD_DMS|KBD_KCC); - - /* - * now ENABLE the keyboard to set it scanning... - */ - kbd_write(KBD_DATA_REG, KBD_ENABLE); - if (kbd_wait_for_input() != KBD_ACK) { - printk(KERN_WARNING "initialize_kbd: " - "keyboard enable failed.\n"); - restore_flags(flags); - return(-1); - } - - restore_flags(flags); - - return (1); -} - -extern __inline__ void -keyboard_setup() +extern __inline__ void keyboard_setup() { request_region(0x60,16,"keyboard"); - initialize_kbd(); } +#endif /* __KERNEL__ */ #endif /* __ASM_ALPHA_KEYBOARD_H */ |