671 lines
23 KiB
C
671 lines
23 KiB
C
/*
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* (C) Copyright 2002 ELTEC Elektronik AG
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* Frank Gottschling <fgottschling@eltec.de>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/* i8042.c - Intel 8042 keyboard driver routines */
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/* includes */
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#include <common.h>
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#ifdef CONFIG_USE_CPCIDVI
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extern u8 gt_cpcidvi_in8(u32 offset);
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extern void gt_cpcidvi_out8(u32 offset, u8 data);
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#define in8(a) gt_cpcidvi_in8(a)
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#define out8(a, b) gt_cpcidvi_out8(a,b)
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#endif
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#include <i8042.h>
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/* defines */
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#ifdef CONFIG_CONSOLE_CURSOR
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extern void console_cursor (int state);
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static int blinkCount = CONFIG_SYS_CONSOLE_BLINK_COUNT;
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static int cursor_state = 0;
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#endif
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/* locals */
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static int kbd_input = -1; /* no input yet */
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static int kbd_mapping = KBD_US; /* default US keyboard */
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static int kbd_flags = NORMAL; /* after reset */
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static int kbd_state = 0; /* unshift code */
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static void kbd_conv_char (unsigned char scan_code);
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static void kbd_led_set (void);
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static void kbd_normal (unsigned char scan_code);
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static void kbd_shift (unsigned char scan_code);
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static void kbd_ctrl (unsigned char scan_code);
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static void kbd_num (unsigned char scan_code);
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static void kbd_caps (unsigned char scan_code);
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static void kbd_scroll (unsigned char scan_code);
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static void kbd_alt (unsigned char scan_code);
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static int kbd_input_empty (void);
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static int kbd_reset (void);
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static unsigned char kbd_fct_map [144] =
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{ /* kbd_fct_map table for scan code */
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0, AS, AS, AS, AS, AS, AS, AS, /* scan 0- 7 */
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AS, AS, AS, AS, AS, AS, AS, AS, /* scan 8- F */
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AS, AS, AS, AS, AS, AS, AS, AS, /* scan 10-17 */
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AS, AS, AS, AS, AS, CN, AS, AS, /* scan 18-1F */
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AS, AS, AS, AS, AS, AS, AS, AS, /* scan 20-27 */
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AS, AS, SH, AS, AS, AS, AS, AS, /* scan 28-2F */
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AS, AS, AS, AS, AS, AS, SH, AS, /* scan 30-37 */
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AS, AS, CP, 0, 0, 0, 0, 0, /* scan 38-3F */
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0, 0, 0, 0, 0, NM, ST, ES, /* scan 40-47 */
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ES, ES, ES, ES, ES, ES, ES, ES, /* scan 48-4F */
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ES, ES, ES, ES, 0, 0, AS, 0, /* scan 50-57 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
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AS, 0, 0, AS, 0, 0, AS, 0, /* scan 70-77 */
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0, AS, 0, 0, 0, AS, 0, 0, /* scan 78-7F */
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AS, CN, AS, AS, AK, ST, EX, EX, /* enhanced */
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AS, EX, EX, AS, EX, AS, EX, EX /* enhanced */
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};
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static unsigned char kbd_key_map [2][5][144] =
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{
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{ /* US keyboard */
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{ /* unshift code */
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0, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 0- 7 */
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'7', '8', '9', '0', '-', '=', 0x08, '\t', /* scan 8- F */
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'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', /* scan 10-17 */
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'o', 'p', '[', ']', '\r', CN, 'a', 's', /* scan 18-1F */
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'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', /* scan 20-27 */
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'\'', '`', SH, '\\', 'z', 'x', 'c', 'v', /* scan 28-2F */
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'b', 'n', 'm', ',', '.', '/', SH, '*', /* scan 30-37 */
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' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
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0, 0, 0, 0, 0, NM, ST, '7', /* scan 40-47 */
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'8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */
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'2', '3', '0', '.', 0, 0, 0, 0, /* scan 50-57 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
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'\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
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0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
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},
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{ /* shift code */
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0, 0x1b, '!', '@', '#', '$', '%', '^', /* scan 0- 7 */
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'&', '*', '(', ')', '_', '+', 0x08, '\t', /* scan 8- F */
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'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', /* scan 10-17 */
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'O', 'P', '{', '}', '\r', CN, 'A', 'S', /* scan 18-1F */
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'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', /* scan 20-27 */
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'"', '~', SH, '|', 'Z', 'X', 'C', 'V', /* scan 28-2F */
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'B', 'N', 'M', '<', '>', '?', SH, '*', /* scan 30-37 */
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' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
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0, 0, 0, 0, 0, NM, ST, '7', /* scan 40-47 */
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'8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */
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'2', '3', '0', '.', 0, 0, 0, 0, /* scan 50-57 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
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'\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
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0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
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},
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{ /* control code */
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0xff, 0x1b, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, /* scan 0- 7 */
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0x1e, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, '\t', /* scan 8- F */
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0x11, 0x17, 0x05, 0x12, 0x14, 0x19, 0x15, 0x09, /* scan 10-17 */
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0x0f, 0x10, 0x1b, 0x1d, '\r', CN, 0x01, 0x13, /* scan 18-1F */
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0x04, 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0c, 0xff, /* scan 20-27 */
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0xff, 0x1c, SH, 0xff, 0x1a, 0x18, 0x03, 0x16, /* scan 28-2F */
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0x02, 0x0e, 0x0d, 0xff, 0xff, 0xff, SH, 0xff, /* scan 30-37 */
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0xff, 0xff, CP, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38-3F */
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0xff, 0xff, 0xff, 0xff, 0xff, NM, ST, 0xff, /* scan 40-47 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48-4F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 50-57 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58-5F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60-67 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68-6F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70-77 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78-7F */
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'\r', CN, '/', '*', ' ', ST, 0xff, 0xff, /* extended */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff /* extended */
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},
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{ /* non numeric code */
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0, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 0- 7 */
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'7', '8', '9', '0', '-', '=', 0x08, '\t', /* scan 8- F */
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'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', /* scan 10-17 */
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'o', 'p', '[', ']', '\r', CN, 'a', 's', /* scan 18-1F */
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'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', /* scan 20-27 */
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'\'', '`', SH, '\\', 'z', 'x', 'c', 'v', /* scan 28-2F */
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'b', 'n', 'm', ',', '.', '/', SH, '*', /* scan 30-37 */
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' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
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0, 0, 0, 0, 0, NM, ST, 'w', /* scan 40-47 */
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'x', 'y', 'l', 't', 'u', 'v', 'm', 'q', /* scan 48-4F */
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'r', 's', 'p', 'n', 0, 0, 0, 0, /* scan 50-57 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
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'\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
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0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
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},
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{ /* right alt mode - not used in US keyboard */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 0 - 7 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 8 - F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 10 -17 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 18 -1F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 20 -27 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 28 -2F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 30 -37 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38 -3F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 40 -47 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48 -4F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 50 -57 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58 -5F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60 -67 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68 -6F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70 -77 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78 -7F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* extended */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff /* extended */
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}
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},
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{ /* german keyboard */
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{ /* unshift code */
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0, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 0- 7 */
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'7', '8', '9', '0', 0xe1, '\'', 0x08, '\t', /* scan 8- F */
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'q', 'w', 'e', 'r', 't', 'z', 'u', 'i', /* scan 10-17 */
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'o', 'p', 0x81, '+', '\r', CN, 'a', 's', /* scan 18-1F */
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'd', 'f', 'g', 'h', 'j', 'k', 'l', 0x94, /* scan 20-27 */
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0x84, '^', SH, '#', 'y', 'x', 'c', 'v', /* scan 28-2F */
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'b', 'n', 'm', ',', '.', '-', SH, '*', /* scan 30-37 */
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' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
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0, 0, 0, 0, 0, NM, ST, '7', /* scan 40-47 */
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'8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */
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'2', '3', '0', ',', 0, 0, '<', 0, /* scan 50-57 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
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'\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
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0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
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},
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{ /* shift code */
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0, 0x1b, '!', '"', 0x15, '$', '%', '&', /* scan 0- 7 */
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'/', '(', ')', '=', '?', '`', 0x08, '\t', /* scan 8- F */
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'Q', 'W', 'E', 'R', 'T', 'Z', 'U', 'I', /* scan 10-17 */
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'O', 'P', 0x9a, '*', '\r', CN, 'A', 'S', /* scan 18-1F */
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'D', 'F', 'G', 'H', 'J', 'K', 'L', 0x99, /* scan 20-27 */
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0x8e, 0xf8, SH, '\'', 'Y', 'X', 'C', 'V', /* scan 28-2F */
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'B', 'N', 'M', ';', ':', '_', SH, '*', /* scan 30-37 */
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' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
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0, 0, 0, 0, 0, NM, ST, '7', /* scan 40-47 */
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'8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */
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'2', '3', '0', ',', 0, 0, '>', 0, /* scan 50-57 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
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'\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
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0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
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},
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{ /* control code */
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0xff, 0x1b, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, /* scan 0- 7 */
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0x1e, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, '\t', /* scan 8- F */
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0x11, 0x17, 0x05, 0x12, 0x14, 0x19, 0x15, 0x09, /* scan 10-17 */
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0x0f, 0x10, 0x1b, 0x1d, '\r', CN, 0x01, 0x13, /* scan 18-1F */
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0x04, 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0c, 0xff, /* scan 20-27 */
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0xff, 0x1c, SH, 0xff, 0x1a, 0x18, 0x03, 0x16, /* scan 28-2F */
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0x02, 0x0e, 0x0d, 0xff, 0xff, 0xff, SH, 0xff, /* scan 30-37 */
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0xff, 0xff, CP, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38-3F */
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0xff, 0xff, 0xff, 0xff, 0xff, NM, ST, 0xff, /* scan 40-47 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48-4F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 50-57 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58-5F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60-67 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68-6F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70-77 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78-7F */
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'\r', CN, '/', '*', ' ', ST, 0xff, 0xff, /* extended */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff /* extended */
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},
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{ /* non numeric code */
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0, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 0- 7 */
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'7', '8', '9', '0', 0xe1, '\'', 0x08, '\t', /* scan 8- F */
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'q', 'w', 'e', 'r', 't', 'z', 'u', 'i', /* scan 10-17 */
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'o', 'p', 0x81, '+', '\r', CN, 'a', 's', /* scan 18-1F */
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'd', 'f', 'g', 'h', 'j', 'k', 'l', 0x94, /* scan 20-27 */
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0x84, '^', SH, 0, 'y', 'x', 'c', 'v', /* scan 28-2F */
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'b', 'n', 'm', ',', '.', '-', SH, '*', /* scan 30-37 */
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' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
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0, 0, 0, 0, 0, NM, ST, 'w', /* scan 40-47 */
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'x', 'y', 'l', 't', 'u', 'v', 'm', 'q', /* scan 48-4F */
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'r', 's', 'p', 'n', 0, 0, '<', 0, /* scan 50-57 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
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0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
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'\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
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0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
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},
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{ /* Right alt mode - is used in German keyboard */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 0 - 7 */
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'{', '[', ']', '}', '\\', 0xff, 0xff, 0xff, /* scan 8 - F */
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'@', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 10 -17 */
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0xff, 0xff, 0xff, '~', 0xff, 0xff, 0xff, 0xff, /* scan 18 -1F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 20 -27 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 28 -2F */
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0xff, 0xff, 0xe6, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 30 -37 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38 -3F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 40 -47 */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48 -4F */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, '|', 0xff, /* scan 50 -57 */
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58 -5F */
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60 -67 */
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68 -6F */
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70 -77 */
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78 -7F */
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* extended */
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff /* extended */
|
|
}
|
|
}
|
|
};
|
|
|
|
static unsigned char ext_key_map [] =
|
|
{
|
|
0x1c, /* keypad enter */
|
|
0x1d, /* right control */
|
|
0x35, /* keypad slash */
|
|
0x37, /* print screen */
|
|
0x38, /* right alt */
|
|
0x46, /* break */
|
|
0x47, /* editpad home */
|
|
0x48, /* editpad up */
|
|
0x49, /* editpad pgup */
|
|
0x4b, /* editpad left */
|
|
0x4d, /* editpad right */
|
|
0x4f, /* editpad end */
|
|
0x50, /* editpad dn */
|
|
0x51, /* editpad pgdn */
|
|
0x52, /* editpad ins */
|
|
0x53, /* editpad del */
|
|
0x00 /* map end */
|
|
};
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* i8042_kbd_init - reset keyboard and init state flags
|
|
*/
|
|
int i8042_kbd_init (void)
|
|
{
|
|
int keymap, try;
|
|
char *penv;
|
|
|
|
#ifdef CONFIG_USE_CPCIDVI
|
|
if ((penv = getenv ("console")) != NULL) {
|
|
if (strncmp (penv, "serial", 7) == 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
#endif
|
|
/* Init keyboard device (default US layout) */
|
|
keymap = KBD_US;
|
|
if ((penv = getenv ("keymap")) != NULL)
|
|
{
|
|
if (strncmp (penv, "de", 3) == 0)
|
|
keymap = KBD_GER;
|
|
}
|
|
|
|
for (try = 0; try < KBD_RESET_TRIES; try++)
|
|
{
|
|
if (kbd_reset() == 0)
|
|
{
|
|
kbd_mapping = keymap;
|
|
kbd_flags = NORMAL;
|
|
kbd_state = 0;
|
|
kbd_led_set();
|
|
return 0;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* i8042_tstc - test if keyboard input is available
|
|
* option: cursor blinking if called in a loop
|
|
*/
|
|
int i8042_tstc (void)
|
|
{
|
|
unsigned char scan_code = 0;
|
|
|
|
#ifdef CONFIG_CONSOLE_CURSOR
|
|
if (--blinkCount == 0)
|
|
{
|
|
cursor_state ^= 1;
|
|
console_cursor (cursor_state);
|
|
blinkCount = CONFIG_SYS_CONSOLE_BLINK_COUNT;
|
|
udelay (10);
|
|
}
|
|
#endif
|
|
|
|
if ((in8 (I8042_STATUS_REG) & 0x01) == 0)
|
|
return 0;
|
|
else
|
|
{
|
|
scan_code = in8 (I8042_DATA_REG);
|
|
if (scan_code == 0xfa)
|
|
return 0;
|
|
|
|
kbd_conv_char(scan_code);
|
|
|
|
if (kbd_input != -1)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* i8042_getc - wait till keyboard input is available
|
|
* option: turn on/off cursor while waiting
|
|
*/
|
|
int i8042_getc (void)
|
|
{
|
|
int ret_chr;
|
|
unsigned char scan_code;
|
|
|
|
while (kbd_input == -1)
|
|
{
|
|
while ((in8 (I8042_STATUS_REG) & 0x01) == 0)
|
|
{
|
|
#ifdef CONFIG_CONSOLE_CURSOR
|
|
if (--blinkCount==0)
|
|
{
|
|
cursor_state ^= 1;
|
|
console_cursor (cursor_state);
|
|
blinkCount = CONFIG_SYS_CONSOLE_BLINK_COUNT;
|
|
}
|
|
udelay (10);
|
|
#endif
|
|
}
|
|
|
|
scan_code = in8 (I8042_DATA_REG);
|
|
|
|
if (scan_code != 0xfa)
|
|
kbd_conv_char (scan_code);
|
|
}
|
|
ret_chr = kbd_input;
|
|
kbd_input = -1;
|
|
return ret_chr;
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
static void kbd_conv_char (unsigned char scan_code)
|
|
{
|
|
if (scan_code == 0xe0)
|
|
{
|
|
kbd_flags |= EXT;
|
|
return;
|
|
}
|
|
|
|
/* if high bit of scan_code, set break flag */
|
|
if (scan_code & 0x80)
|
|
kbd_flags |= BRK;
|
|
else
|
|
kbd_flags &= ~BRK;
|
|
|
|
if ((scan_code == 0xe1) || (kbd_flags & E1))
|
|
{
|
|
if (scan_code == 0xe1)
|
|
{
|
|
kbd_flags ^= BRK; /* reset the break flag */
|
|
kbd_flags ^= E1; /* bitwise EXOR with E1 flag */
|
|
}
|
|
return;
|
|
}
|
|
|
|
scan_code &= 0x7f;
|
|
|
|
if (kbd_flags & EXT)
|
|
{
|
|
int i;
|
|
|
|
kbd_flags ^= EXT;
|
|
for (i=0; ext_key_map[i]; i++)
|
|
{
|
|
if (ext_key_map[i] == scan_code)
|
|
{
|
|
scan_code = 0x80 + i;
|
|
break;
|
|
}
|
|
}
|
|
/* not found ? */
|
|
if (!ext_key_map[i])
|
|
return;
|
|
}
|
|
|
|
switch (kbd_fct_map [scan_code])
|
|
{
|
|
case AS: kbd_normal (scan_code);
|
|
break;
|
|
case SH: kbd_shift (scan_code);
|
|
break;
|
|
case CN: kbd_ctrl (scan_code);
|
|
break;
|
|
case NM: kbd_num (scan_code);
|
|
break;
|
|
case CP: kbd_caps (scan_code);
|
|
break;
|
|
case ST: kbd_scroll (scan_code);
|
|
break;
|
|
case AK: kbd_alt (scan_code);
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
static void kbd_normal (unsigned char scan_code)
|
|
{
|
|
unsigned char chr;
|
|
|
|
if ((kbd_flags & BRK) == NORMAL)
|
|
{
|
|
chr = kbd_key_map [kbd_mapping][kbd_state][scan_code];
|
|
if ((chr == 0xff) || (chr == 0x00))
|
|
{
|
|
return;
|
|
}
|
|
|
|
/* if caps lock convert upper to lower */
|
|
if (((kbd_flags & CAPS) == CAPS) && (chr >= 'a' && chr <= 'z'))
|
|
{
|
|
chr -= 'a' - 'A';
|
|
}
|
|
kbd_input = chr;
|
|
}
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
static void kbd_shift (unsigned char scan_code)
|
|
{
|
|
if ((kbd_flags & BRK) == BRK)
|
|
{
|
|
kbd_state = AS;
|
|
kbd_flags &= (~SHIFT);
|
|
}
|
|
else
|
|
{
|
|
kbd_state = SH;
|
|
kbd_flags |= SHIFT;
|
|
}
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
static void kbd_ctrl (unsigned char scan_code)
|
|
{
|
|
if ((kbd_flags & BRK) == BRK)
|
|
{
|
|
kbd_state = AS;
|
|
kbd_flags &= (~CTRL);
|
|
}
|
|
else
|
|
{
|
|
kbd_state = CN;
|
|
kbd_flags |= CTRL;
|
|
}
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
static void kbd_caps (unsigned char scan_code)
|
|
{
|
|
if ((kbd_flags & BRK) == NORMAL)
|
|
{
|
|
kbd_flags ^= CAPS;
|
|
kbd_led_set (); /* update keyboard LED */
|
|
}
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
static void kbd_num (unsigned char scan_code)
|
|
{
|
|
if ((kbd_flags & BRK) == NORMAL)
|
|
{
|
|
kbd_flags ^= NUM;
|
|
kbd_state = (kbd_flags & NUM) ? AS : NM;
|
|
kbd_led_set (); /* update keyboard LED */
|
|
}
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
static void kbd_scroll (unsigned char scan_code)
|
|
{
|
|
if ((kbd_flags & BRK) == NORMAL)
|
|
{
|
|
kbd_flags ^= STP;
|
|
kbd_led_set (); /* update keyboard LED */
|
|
if (kbd_flags & STP)
|
|
kbd_input = 0x13;
|
|
else
|
|
kbd_input = 0x11;
|
|
}
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
static void kbd_alt (unsigned char scan_code)
|
|
{
|
|
if ((kbd_flags & BRK) == BRK)
|
|
{
|
|
kbd_state = AS;
|
|
kbd_flags &= (~ALT);
|
|
}
|
|
else
|
|
{
|
|
kbd_state = AK;
|
|
kbd_flags &= ALT;
|
|
}
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
static void kbd_led_set (void)
|
|
{
|
|
kbd_input_empty();
|
|
out8 (I8042_DATA_REG, 0xed); /* SET LED command */
|
|
kbd_input_empty();
|
|
out8 (I8042_DATA_REG, (kbd_flags & 0x7)); /* LED bits only */
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
static int kbd_input_empty (void)
|
|
{
|
|
int kbdTimeout = KBD_TIMEOUT;
|
|
|
|
/* wait for input buf empty */
|
|
while ((in8 (I8042_STATUS_REG) & 0x02) && kbdTimeout--)
|
|
udelay(1000);
|
|
|
|
return kbdTimeout;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
static int kbd_reset (void)
|
|
{
|
|
if (kbd_input_empty() == 0)
|
|
return -1;
|
|
|
|
out8 (I8042_DATA_REG, 0xff);
|
|
|
|
udelay(250000);
|
|
|
|
if (kbd_input_empty() == 0)
|
|
return -1;
|
|
|
|
#ifdef CONFIG_USE_CPCIDVI
|
|
out8 (I8042_COMMAND_REG, 0x60);
|
|
#else
|
|
out8 (I8042_DATA_REG, 0x60);
|
|
#endif
|
|
|
|
if (kbd_input_empty() == 0)
|
|
return -1;
|
|
|
|
out8 (I8042_DATA_REG, 0x45);
|
|
|
|
|
|
if (kbd_input_empty() == 0)
|
|
return -1;
|
|
|
|
out8 (I8042_COMMAND_REG, 0xae);
|
|
|
|
if (kbd_input_empty() == 0)
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|