diff options
Diffstat (limited to 'board/mpl/common/kbd.c')
| -rw-r--r-- | board/mpl/common/kbd.c | 625 |
1 files changed, 0 insertions, 625 deletions
diff --git a/board/mpl/common/kbd.c b/board/mpl/common/kbd.c deleted file mode 100644 index 36b1694..0000000 --- a/board/mpl/common/kbd.c +++ /dev/null @@ -1,625 +0,0 @@ -/* - * (C) Copyright 2001 - * Denis Peter, MPL AG Switzerland, d.peter@mpl.ch - * - * SPDX-License-Identifier: GPL-2.0+ - * - * Source partly derived from: - * linux/drivers/char/pc_keyb.c - */ -#include <common.h> -#include <console.h> -#include <asm/processor.h> -#include <stdio_dev.h> -#include "isa.h" -#include "kbd.h" - - -unsigned char kbd_read_status(void); -unsigned char kbd_read_input(void); -void kbd_send_data(unsigned char data); -void disable_8259A_irq(unsigned int irq); -void enable_8259A_irq(unsigned int irq); - -/* used only by send_data - set by keyboard_interrupt */ - - -#undef KBG_DEBUG - -#ifdef KBG_DEBUG -#define PRINTF(fmt,args...) printf (fmt ,##args) -#else -#define PRINTF(fmt,args...) -#endif - -#define KBD_STAT_KOBF 0x01 -#define KBD_STAT_IBF 0x02 -#define KBD_STAT_SYS 0x04 -#define KBD_STAT_CD 0x08 -#define KBD_STAT_LOCK 0x10 -#define KBD_STAT_MOBF 0x20 -#define KBD_STAT_TI_OUT 0x40 -#define KBD_STAT_PARERR 0x80 - -#define KBD_INIT_TIMEOUT 1000 /* Timeout in ms for initializing the keyboard */ -#define KBC_TIMEOUT 250 /* Timeout in ms for sending to keyboard controller */ -#define KBD_TIMEOUT 2000 /* Timeout in ms for keyboard command acknowledge */ -/* - * Keyboard Controller Commands - */ - -#define KBD_CCMD_READ_MODE 0x20 /* Read mode bits */ -#define KBD_CCMD_WRITE_MODE 0x60 /* Write mode bits */ -#define KBD_CCMD_GET_VERSION 0xA1 /* Get controller version */ -#define KBD_CCMD_MOUSE_DISABLE 0xA7 /* Disable mouse interface */ -#define KBD_CCMD_MOUSE_ENABLE 0xA8 /* Enable mouse interface */ -#define KBD_CCMD_TEST_MOUSE 0xA9 /* Mouse interface test */ -#define KBD_CCMD_SELF_TEST 0xAA /* Controller self test */ -#define KBD_CCMD_KBD_TEST 0xAB /* Keyboard interface test */ -#define KBD_CCMD_KBD_DISABLE 0xAD /* Keyboard interface disable */ -#define KBD_CCMD_KBD_ENABLE 0xAE /* Keyboard interface enable */ -#define KBD_CCMD_WRITE_AUX_OBUF 0xD3 /* Write to output buffer as if - initiated by the auxiliary device */ -#define KBD_CCMD_WRITE_MOUSE 0xD4 /* Write the following byte to the mouse */ - -/* - * Keyboard Commands - */ - -#define KBD_CMD_SET_LEDS 0xED /* Set keyboard leds */ -#define KBD_CMD_SET_RATE 0xF3 /* Set typematic rate */ -#define KBD_CMD_ENABLE 0xF4 /* Enable scanning */ -#define KBD_CMD_DISABLE 0xF5 /* Disable scanning */ -#define KBD_CMD_RESET 0xFF /* Reset */ - -/* - * Keyboard Replies - */ - -#define KBD_REPLY_POR 0xAA /* Power on reset */ -#define KBD_REPLY_ACK 0xFA /* Command ACK */ -#define KBD_REPLY_RESEND 0xFE /* Command NACK, send the cmd again */ - -/* - * Status Register Bits - */ - -#define KBD_STAT_OBF 0x01 /* Keyboard output buffer full */ -#define KBD_STAT_IBF 0x02 /* Keyboard input buffer full */ -#define KBD_STAT_SELFTEST 0x04 /* Self test successful */ -#define KBD_STAT_CMD 0x08 /* Last write was a command write (0=data) */ -#define KBD_STAT_UNLOCKED 0x10 /* Zero if keyboard locked */ -#define KBD_STAT_MOUSE_OBF 0x20 /* Mouse output buffer full */ -#define KBD_STAT_GTO 0x40 /* General receive/xmit timeout */ -#define KBD_STAT_PERR 0x80 /* Parity error */ - -#define AUX_STAT_OBF (KBD_STAT_OBF | KBD_STAT_MOUSE_OBF) - -/* - * Controller Mode Register Bits - */ - -#define KBD_MODE_KBD_INT 0x01 /* Keyboard data generate IRQ1 */ -#define KBD_MODE_MOUSE_INT 0x02 /* Mouse data generate IRQ12 */ -#define KBD_MODE_SYS 0x04 /* The system flag (?) */ -#define KBD_MODE_NO_KEYLOCK 0x08 /* The keylock doesn't affect the keyboard if set */ -#define KBD_MODE_DISABLE_KBD 0x10 /* Disable keyboard interface */ -#define KBD_MODE_DISABLE_MOUSE 0x20 /* Disable mouse interface */ -#define KBD_MODE_KCC 0x40 /* Scan code conversion to PC format */ -#define KBD_MODE_RFU 0x80 - - -#define KDB_DATA_PORT 0x60 -#define KDB_COMMAND_PORT 0x64 - -#define LED_SCR 0x01 /* scroll lock led */ -#define LED_CAP 0x04 /* caps lock led */ -#define LED_NUM 0x02 /* num lock led */ - -#define KBD_BUFFER_LEN 0x20 /* size of the keyboardbuffer */ - - -static volatile char kbd_buffer[KBD_BUFFER_LEN]; -static volatile int in_pointer = 0; -static volatile int out_pointer = 0; - - -static unsigned char num_lock = 0; -static unsigned char caps_lock = 0; -static unsigned char scroll_lock = 0; -static unsigned char shift = 0; -static unsigned char ctrl = 0; -static unsigned char alt = 0; -static unsigned char e0 = 0; -static unsigned char leds = 0; - -#define DEVNAME "kbd" - -/* Simple translation table for the keys */ - -static unsigned char kbd_plain_xlate[] = { - 0xff,0x1b, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=','\b','\t', /* 0x00 - 0x0f */ - 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']','\r',0xff, 'a', 's', /* 0x10 - 0x1f */ - 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';','\'', '`',0xff,'\\', 'z', 'x', 'c', 'v', /* 0x20 - 0x2f */ - 'b', 'n', 'm', ',', '.', '/',0xff,0xff,0xff, ' ',0xff,0xff,0xff,0xff,0xff,0xff, /* 0x30 - 0x3f */ - 0xff,0xff,0xff,0xff,0xff,0xff,0xff, '7', '8', '9', '-', '4', '5', '6', '+', '1', /* 0x40 - 0x4f */ - '2', '3', '0', '.',0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 0x50 - 0x5F */ - '\r',0xff,0xff - }; - -static unsigned char kbd_shift_xlate[] = { - 0xff,0x1b, '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+','\b','\t', /* 0x00 - 0x0f */ - 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}','\r',0xff, 'A', 'S', /* 0x10 - 0x1f */ - 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"', '~',0xff, '|', 'Z', 'X', 'C', 'V', /* 0x20 - 0x2f */ - 'B', 'N', 'M', '<', '>', '?',0xff,0xff,0xff, ' ',0xff,0xff,0xff,0xff,0xff,0xff, /* 0x30 - 0x3f */ - 0xff,0xff,0xff,0xff,0xff,0xff,0xff, '7', '8', '9', '-', '4', '5', '6', '+', '1', /* 0x40 - 0x4f */ - '2', '3', '0', '.',0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 0x50 - 0x5F */ - '\r',0xff,0xff - }; - -static unsigned char kbd_ctrl_xlate[] = { - 0xff,0x1b, '1',0x00, '3', '4', '5',0x1E, '7', '8', '9', '0',0x1F, '=','\b','\t', /* 0x00 - 0x0f */ - 0x11,0x17,0x05,0x12,0x14,0x18,0x15,0x09,0x0f,0x10,0x1b,0x1d,'\n',0xff,0x01,0x13, /* 0x10 - 0x1f */ - 0x04,0x06,0x08,0x09,0x0a,0x0b,0x0c, ';','\'', '~',0x00,0x1c,0x1a,0x18,0x03,0x16, /* 0x20 - 0x2f */ - 0x02,0x0e,0x0d, '<', '>', '?',0xff,0xff,0xff,0x00,0xff,0xff,0xff,0xff,0xff,0xff, /* 0x30 - 0x3f */ - 0xff,0xff,0xff,0xff,0xff,0xff,0xff, '7', '8', '9', '-', '4', '5', '6', '+', '1', /* 0x40 - 0x4f */ - '2', '3', '0', '.',0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 0x50 - 0x5F */ - '\r',0xff,0xff - }; - -/****************************************************************** - * Init - ******************************************************************/ -int isa_kbd_init(void) -{ - char* result; - result=kbd_initialize(); - if(result==NULL) { - PRINTF("AT Keyboard initialized\n"); - irq_install_handler(25, (interrupt_handler_t *)handle_isa_int, NULL); - isa_irq_install_handler(KBD_INTERRUPT, (interrupt_handler_t *)kbd_interrupt, NULL); - return (1); - } else { - printf("%s\n",result); - return (-1); - } -} - -#ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE -extern int overwrite_console (void); -#else -int overwrite_console (void) -{ - return (0); -} -#endif - -int drv_isa_kbd_init (void) -{ - int error; - struct stdio_dev kbddev ; - char *stdinname = getenv ("stdin"); - - if(isa_kbd_init()==-1) - return -1; - memset (&kbddev, 0, sizeof(kbddev)); - strcpy(kbddev.name, DEVNAME); - kbddev.flags = DEV_FLAGS_INPUT; - kbddev.getc = kbd_getc ; - kbddev.tstc = kbd_testc ; - - error = stdio_register (&kbddev); - if(error==0) { - /* check if this is the standard input device */ - if(strcmp(stdinname,DEVNAME)==0) { - /* reassign the console */ - if(overwrite_console()) { - return 1; - } - error=console_assign(stdin,DEVNAME); - if(error==0) - return 1; - else - return error; - } - return 1; - } - return error; -} - -/****************************************************************** - * Queue handling - ******************************************************************/ -/* puts character in the queue and sets up the in and out pointer */ -void kbd_put_queue(char data) -{ - if((in_pointer+1)==KBD_BUFFER_LEN) { - if(out_pointer==0) { - return; /* buffer full */ - } else{ - in_pointer=0; - } - } else { - if((in_pointer+1)==out_pointer) - return; /* buffer full */ - in_pointer++; - } - kbd_buffer[in_pointer]=data; - return; -} - -/* test if a character is in the queue */ -int kbd_testc(struct stdio_dev *dev) -{ - if(in_pointer==out_pointer) - return(0); /* no data */ - else - return(1); -} -/* gets the character from the queue */ -int kbd_getc(struct stdio_dev *dev) -{ - char c; - while(in_pointer==out_pointer); - if((out_pointer+1)==KBD_BUFFER_LEN) - out_pointer=0; - else - out_pointer++; - c=kbd_buffer[out_pointer]; - return (int)c; - -} - - -/* set LEDs */ - -void kbd_set_leds(void) -{ - if(caps_lock==0) - leds&=~LED_CAP; /* switch caps_lock off */ - else - leds|=LED_CAP; /* switch on LED */ - if(num_lock==0) - leds&=~LED_NUM; /* switch LED off */ - else - leds|=LED_NUM; /* switch on LED */ - if(scroll_lock==0) - leds&=~LED_SCR; /* switch LED off */ - else - leds|=LED_SCR; /* switch on LED */ - kbd_send_data(KBD_CMD_SET_LEDS); - kbd_send_data(leds); -} - - -void handle_keyboard_event (unsigned char scancode) -{ - unsigned char keycode; - - /* Convert scancode to keycode */ - PRINTF ("scancode %x\n", scancode); - if (scancode == 0xe0) { - e0 = 1; /* special charakters */ - return; - } - if (e0 == 1) { - e0 = 0; /* delete flag */ - if (!(((scancode & 0x7F) == 0x38) || /* the right ctrl key */ - ((scancode & 0x7F) == 0x1D) || /* the right alt key */ - ((scancode & 0x7F) == 0x35) || /* the right '/' key */ - ((scancode & 0x7F) == 0x1C))) - /* the right enter key */ - /* we swallow unknown e0 codes */ - return; - } - /* special cntrl keys */ - switch (scancode) { - case 0x2A: - case 0x36: /* shift pressed */ - shift = 1; - return; /* do nothing else */ - case 0xAA: - case 0xB6: /* shift released */ - shift = 0; - return; /* do nothing else */ - case 0x38: /* alt pressed */ - alt = 1; - return; /* do nothing else */ - case 0xB8: /* alt released */ - alt = 0; - return; /* do nothing else */ - case 0x1d: /* ctrl pressed */ - ctrl = 1; - return; /* do nothing else */ - case 0x9d: /* ctrl released */ - ctrl = 0; - return; /* do nothing else */ - case 0x46: /* scrollock pressed */ - scroll_lock = ~scroll_lock; - kbd_set_leds (); - return; /* do nothing else */ - case 0x3A: /* capslock pressed */ - caps_lock = ~caps_lock; - kbd_set_leds (); - return; - case 0x45: /* numlock pressed */ - num_lock = ~num_lock; - kbd_set_leds (); - return; - case 0xC6: /* scroll lock released */ - case 0xC5: /* num lock released */ - case 0xBA: /* caps lock released */ - return; /* just swallow */ - } - if ((scancode & 0x80) == 0x80) /* key released */ - return; - /* now, decide which table we need */ - if (scancode > (sizeof (kbd_plain_xlate) / sizeof (kbd_plain_xlate[0]))) { /* scancode not in list */ - PRINTF ("unkown scancode %X\n", scancode); - return; /* swallow it */ - } - /* setup plain code first */ - keycode = kbd_plain_xlate[scancode]; - if (caps_lock == 1) { /* caps_lock is pressed, overwrite plain code */ - if (scancode > (sizeof (kbd_shift_xlate) / sizeof (kbd_shift_xlate[0]))) { /* scancode not in list */ - PRINTF ("unkown caps-locked scancode %X\n", scancode); - return; /* swallow it */ - } - keycode = kbd_shift_xlate[scancode]; - if (keycode < 'A') { /* we only want the alphas capital */ - keycode = kbd_plain_xlate[scancode]; - } - } - if (shift == 1) { /* shift overwrites caps_lock */ - if (scancode > (sizeof (kbd_shift_xlate) / sizeof (kbd_shift_xlate[0]))) { /* scancode not in list */ - PRINTF ("unkown shifted scancode %X\n", scancode); - return; /* swallow it */ - } - keycode = kbd_shift_xlate[scancode]; - } - if (ctrl == 1) { /* ctrl overwrites caps_lock and shift */ - if (scancode > (sizeof (kbd_ctrl_xlate) / sizeof (kbd_ctrl_xlate[0]))) { /* scancode not in list */ - PRINTF ("unkown ctrl scancode %X\n", scancode); - return; /* swallow it */ - } - keycode = kbd_ctrl_xlate[scancode]; - } - /* check if valid keycode */ - if (keycode == 0xff) { - PRINTF ("unkown scancode %X\n", scancode); - return; /* swallow unknown codes */ - } - - kbd_put_queue (keycode); - PRINTF ("%x\n", keycode); -} - -/* - * This reads the keyboard status port, and does the - * appropriate action. - * - */ -unsigned char handle_kbd_event(void) -{ - unsigned char status = kbd_read_status(); - unsigned int work = 10000; - - while ((--work > 0) && (status & KBD_STAT_OBF)) { - unsigned char scancode; - - scancode = kbd_read_input(); - - /* Error bytes must be ignored to make the - Synaptics touchpads compaq use work */ - /* Ignore error bytes */ - if (!(status & (KBD_STAT_GTO | KBD_STAT_PERR))) - { - if (status & KBD_STAT_MOUSE_OBF) - ; /* not supported: handle_mouse_event(scancode); */ - else - handle_keyboard_event(scancode); - } - status = kbd_read_status(); - } - if (!work) - PRINTF("pc_keyb: controller jammed (0x%02X).\n", status); - return status; -} - - -/****************************************************************************** - * Lowlevel Part of keyboard section - */ -unsigned char kbd_read_status(void) -{ - return(in8(CONFIG_SYS_ISA_IO_BASE_ADDRESS + KDB_COMMAND_PORT)); -} - -unsigned char kbd_read_input(void) -{ - return(in8(CONFIG_SYS_ISA_IO_BASE_ADDRESS + KDB_DATA_PORT)); -} - -void kbd_write_command(unsigned char cmd) -{ - out8(CONFIG_SYS_ISA_IO_BASE_ADDRESS + KDB_COMMAND_PORT,cmd); -} - -void kbd_write_output(unsigned char data) -{ - out8(CONFIG_SYS_ISA_IO_BASE_ADDRESS + KDB_DATA_PORT, data); -} - -int kbd_read_data(void) -{ - int val; - unsigned char status; - - val = -1; - status = kbd_read_status(); - if (status & KBD_STAT_OBF) { - val = kbd_read_input(); - if (status & (KBD_STAT_GTO | KBD_STAT_PERR)) - val = -2; - } - return val; -} - -int kbd_wait_for_input(void) -{ - unsigned long timeout; - int val; - - timeout = KBD_TIMEOUT; - val=kbd_read_data(); - while(val < 0) - { - if(timeout--==0) - return -1; - udelay(1000); - val=kbd_read_data(); - } - return val; -} - - -int kb_wait(void) -{ - unsigned long timeout = KBC_TIMEOUT * 10; - - do { - unsigned char status = handle_kbd_event(); - if (!(status & KBD_STAT_IBF)) - return 0; /* ok */ - udelay(1000); - timeout--; - } while (timeout); - return 1; -} - -void kbd_write_command_w(int data) -{ - if(kb_wait()) - PRINTF("timeout in kbd_write_command_w\n"); - kbd_write_command(data); -} - -void kbd_write_output_w(int data) -{ - if(kb_wait()) - PRINTF("timeout in kbd_write_output_w\n"); - kbd_write_output(data); -} - -void kbd_send_data(unsigned char data) -{ - unsigned char status; - disable_8259A_irq(1); /* disable interrupt */ - kbd_write_output_w(data); - status = kbd_wait_for_input(); - if (status == KBD_REPLY_ACK) - enable_8259A_irq(1); /* enable interrupt */ -} - - -char * kbd_initialize(void) -{ - int status; - - in_pointer = 0; /* delete in Buffer */ - out_pointer = 0; - /* - * 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_command_w(KBD_CCMD_SELF_TEST); - if (kbd_wait_for_input() != 0x55) - return "Kbd: failed self test"; - /* - * 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_command_w(KBD_CCMD_KBD_TEST); - if (kbd_wait_for_input() != 0x00) - return "Kbd: interface failed self test"; - /* - * Enable the keyboard by allowing the keyboard clock to run. - */ - kbd_write_command_w(KBD_CCMD_KBD_ENABLE); - status = kbd_wait_for_input(); - /* - * 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. - * - * Set up to try again if the keyboard asks for RESEND. - */ - do { - kbd_write_output_w(KBD_CMD_RESET); - status = kbd_wait_for_input(); - if (status == KBD_REPLY_ACK) - break; - if (status != KBD_REPLY_RESEND) { - PRINTF("status: %X\n",status); - return "Kbd: reset failed, no ACK"; - } - } while (1); - if (kbd_wait_for_input() != KBD_REPLY_POR) - return "Kbd: reset failed, no POR"; - - /* - * Set keyboard controller mode. During this, the keyboard should be - * in the disabled state. - * - * Set up to try again if the keyboard asks for RESEND. - */ - do { - kbd_write_output_w(KBD_CMD_DISABLE); - status = kbd_wait_for_input(); - if (status == KBD_REPLY_ACK) - break; - if (status != KBD_REPLY_RESEND) - return "Kbd: disable keyboard: no ACK"; - } while (1); - - kbd_write_command_w(KBD_CCMD_WRITE_MODE); - kbd_write_output_w(KBD_MODE_KBD_INT - | KBD_MODE_SYS - | KBD_MODE_DISABLE_MOUSE - | KBD_MODE_KCC); - - /* AMCC powerpc portables need this to use scan-code set 1 -- Cort */ - kbd_write_command_w(KBD_CCMD_READ_MODE); - if (!(kbd_wait_for_input() & KBD_MODE_KCC)) { - /* - * If the controller does not support conversion, - * Set the keyboard to scan-code set 1. - */ - kbd_write_output_w(0xF0); - kbd_wait_for_input(); - kbd_write_output_w(0x01); - kbd_wait_for_input(); - } - kbd_write_output_w(KBD_CMD_ENABLE); - if (kbd_wait_for_input() != KBD_REPLY_ACK) - return "Kbd: enable keyboard: no ACK"; - - /* - * Finally, set the typematic rate to maximum. - */ - kbd_write_output_w(KBD_CMD_SET_RATE); - if (kbd_wait_for_input() != KBD_REPLY_ACK) - return "Kbd: Set rate: no ACK"; - kbd_write_output_w(0x00); - if (kbd_wait_for_input() != KBD_REPLY_ACK) - return "Kbd: Set rate: no ACK"; - return NULL; -} - -void kbd_interrupt(void) -{ - handle_kbd_event(); -} |