diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/m68k/atari/atakeyb.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/m68k/atari/atakeyb.c | 638 |
1 files changed, 0 insertions, 638 deletions
diff --git a/ANDROID_3.4.5/arch/m68k/atari/atakeyb.c b/ANDROID_3.4.5/arch/m68k/atari/atakeyb.c deleted file mode 100644 index 95022b04..00000000 --- a/ANDROID_3.4.5/arch/m68k/atari/atakeyb.c +++ /dev/null @@ -1,638 +0,0 @@ -/* - * Atari Keyboard driver for 680x0 Linux - * - * 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. - */ - -/* - * Atari support by Robert de Vries - * enhanced by Bjoern Brauel and Roman Hodek - * - * 2.6 and input cleanup (removed autorepeat stuff) for 2.6.21 - * 06/07 Michael Schmitz - */ - -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/interrupt.h> -#include <linux/errno.h> -#include <linux/keyboard.h> -#include <linux/delay.h> -#include <linux/timer.h> -#include <linux/kd.h> -#include <linux/random.h> -#include <linux/init.h> -#include <linux/kbd_kern.h> - -#include <asm/atariints.h> -#include <asm/atarihw.h> -#include <asm/atarikb.h> -#include <asm/atari_joystick.h> -#include <asm/irq.h> - - -/* Hook for MIDI serial driver */ -void (*atari_MIDI_interrupt_hook) (void); -/* Hook for keyboard inputdev driver */ -void (*atari_input_keyboard_interrupt_hook) (unsigned char, char); -/* Hook for mouse inputdev driver */ -void (*atari_input_mouse_interrupt_hook) (char *); -EXPORT_SYMBOL(atari_input_keyboard_interrupt_hook); -EXPORT_SYMBOL(atari_input_mouse_interrupt_hook); - -/* variables for IKBD self test: */ - -/* state: 0: off; >0: in progress; >1: 0xf1 received */ -static volatile int ikbd_self_test; -/* timestamp when last received a char */ -static volatile unsigned long self_test_last_rcv; -/* bitmap of keys reported as broken */ -static unsigned long broken_keys[128/(sizeof(unsigned long)*8)] = { 0, }; - -#define BREAK_MASK (0x80) - -/* - * ++roman: The following changes were applied manually: - * - * - The Alt (= Meta) key works in combination with Shift and - * Control, e.g. Alt+Shift+a sends Meta-A (0xc1), Alt+Control+A sends - * Meta-Ctrl-A (0x81) ... - * - * - The parentheses on the keypad send '(' and ')' with all - * modifiers (as would do e.g. keypad '+'), but they cannot be used as - * application keys (i.e. sending Esc O c). - * - * - HELP and UNDO are mapped to be F21 and F24, resp, that send the - * codes "\E[M" and "\E[P". (This is better than the old mapping to - * F11 and F12, because these codes are on Shift+F1/2 anyway.) This - * way, applications that allow their own keyboard mappings - * (e.g. tcsh, X Windows) can be configured to use them in the way - * the label suggests (providing help or undoing). - * - * - Console switching is done with Alt+Fx (consoles 1..10) and - * Shift+Alt+Fx (consoles 11..20). - * - * - The misc. special function implemented in the kernel are mapped - * to the following key combinations: - * - * ClrHome -> Home/Find - * Shift + ClrHome -> End/Select - * Shift + Up -> Page Up - * Shift + Down -> Page Down - * Alt + Help -> show system status - * Shift + Help -> show memory info - * Ctrl + Help -> show registers - * Ctrl + Alt + Del -> Reboot - * Alt + Undo -> switch to last console - * Shift + Undo -> send interrupt - * Alt + Insert -> stop/start output (same as ^S/^Q) - * Alt + Up -> Scroll back console (if implemented) - * Alt + Down -> Scroll forward console (if implemented) - * Alt + CapsLock -> NumLock - * - * ++Andreas: - * - * - Help mapped to K_HELP - * - Undo mapped to K_UNDO (= K_F246) - * - Keypad Left/Right Parenthesis mapped to new K_PPAREN[LR] - */ - -typedef enum kb_state_t { - KEYBOARD, AMOUSE, RMOUSE, JOYSTICK, CLOCK, RESYNC -} KB_STATE_T; - -#define IS_SYNC_CODE(sc) ((sc) >= 0x04 && (sc) <= 0xfb) - -typedef struct keyboard_state { - unsigned char buf[6]; - int len; - KB_STATE_T state; -} KEYBOARD_STATE; - -KEYBOARD_STATE kb_state; - -/* ++roman: If a keyboard overrun happened, we can't tell in general how much - * bytes have been lost and in which state of the packet structure we are now. - * This usually causes keyboards bytes to be interpreted as mouse movements - * and vice versa, which is very annoying. It seems better to throw away some - * bytes (that are usually mouse bytes) than to misinterpret them. Therefore I - * introduced the RESYNC state for IKBD data. In this state, the bytes up to - * one that really looks like a key event (0x04..0xf2) or the start of a mouse - * packet (0xf8..0xfb) are thrown away, but at most 2 bytes. This at least - * speeds up the resynchronization of the event structure, even if maybe a - * mouse movement is lost. However, nothing is perfect. For bytes 0x01..0x03, - * it's really hard to decide whether they're mouse or keyboard bytes. Since - * overruns usually occur when moving the Atari mouse rapidly, they're seen as - * mouse bytes here. If this is wrong, only a make code of the keyboard gets - * lost, which isn't too bad. Losing a break code would be disastrous, - * because then the keyboard repeat strikes... - */ - -static irqreturn_t atari_keyboard_interrupt(int irq, void *dummy) -{ - u_char acia_stat; - int scancode; - int break_flag; - -repeat: - if (acia.mid_ctrl & ACIA_IRQ) - if (atari_MIDI_interrupt_hook) - atari_MIDI_interrupt_hook(); - acia_stat = acia.key_ctrl; - /* check out if the interrupt came from this ACIA */ - if (!((acia_stat | acia.mid_ctrl) & ACIA_IRQ)) - return IRQ_HANDLED; - - if (acia_stat & ACIA_OVRN) { - /* a very fast typist or a slow system, give a warning */ - /* ...happens often if interrupts were disabled for too long */ - printk(KERN_DEBUG "Keyboard overrun\n"); - scancode = acia.key_data; - if (ikbd_self_test) - /* During self test, don't do resyncing, just process the code */ - goto interpret_scancode; - else if (IS_SYNC_CODE(scancode)) { - /* This code seem already to be the start of a new packet or a - * single scancode */ - kb_state.state = KEYBOARD; - goto interpret_scancode; - } else { - /* Go to RESYNC state and skip this byte */ - kb_state.state = RESYNC; - kb_state.len = 1; /* skip max. 1 another byte */ - goto repeat; - } - } - - if (acia_stat & ACIA_RDRF) { - /* received a character */ - scancode = acia.key_data; /* get it or reset the ACIA, I'll get it! */ - tasklet_schedule(&keyboard_tasklet); - interpret_scancode: - switch (kb_state.state) { - case KEYBOARD: - switch (scancode) { - case 0xF7: - kb_state.state = AMOUSE; - kb_state.len = 0; - break; - - case 0xF8: - case 0xF9: - case 0xFA: - case 0xFB: - kb_state.state = RMOUSE; - kb_state.len = 1; - kb_state.buf[0] = scancode; - break; - - case 0xFC: - kb_state.state = CLOCK; - kb_state.len = 0; - break; - - case 0xFE: - case 0xFF: - kb_state.state = JOYSTICK; - kb_state.len = 1; - kb_state.buf[0] = scancode; - break; - - case 0xF1: - /* during self-test, note that 0xf1 received */ - if (ikbd_self_test) { - ++ikbd_self_test; - self_test_last_rcv = jiffies; - break; - } - /* FALL THROUGH */ - - default: - break_flag = scancode & BREAK_MASK; - scancode &= ~BREAK_MASK; - if (ikbd_self_test) { - /* Scancodes sent during the self-test stand for broken - * keys (keys being down). The code *should* be a break - * code, but nevertheless some AT keyboard interfaces send - * make codes instead. Therefore, simply ignore - * break_flag... - */ - int keyval, keytyp; - - set_bit(scancode, broken_keys); - self_test_last_rcv = jiffies; - /* new Linux scancodes; approx. */ - keyval = scancode; - keytyp = KTYP(keyval) - 0xf0; - keyval = KVAL(keyval); - - printk(KERN_WARNING "Key with scancode %d ", scancode); - if (keytyp == KT_LATIN || keytyp == KT_LETTER) { - if (keyval < ' ') - printk("('^%c') ", keyval + '@'); - else - printk("('%c') ", keyval); - } - printk("is broken -- will be ignored.\n"); - break; - } else if (test_bit(scancode, broken_keys)) - break; - - if (atari_input_keyboard_interrupt_hook) - atari_input_keyboard_interrupt_hook((unsigned char)scancode, !break_flag); - break; - } - break; - - case AMOUSE: - kb_state.buf[kb_state.len++] = scancode; - if (kb_state.len == 5) { - kb_state.state = KEYBOARD; - /* not yet used */ - /* wake up someone waiting for this */ - } - break; - - case RMOUSE: - kb_state.buf[kb_state.len++] = scancode; - if (kb_state.len == 3) { - kb_state.state = KEYBOARD; - if (atari_input_mouse_interrupt_hook) - atari_input_mouse_interrupt_hook(kb_state.buf); - } - break; - - case JOYSTICK: - kb_state.buf[1] = scancode; - kb_state.state = KEYBOARD; -#ifdef FIXED_ATARI_JOYSTICK - atari_joystick_interrupt(kb_state.buf); -#endif - break; - - case CLOCK: - kb_state.buf[kb_state.len++] = scancode; - if (kb_state.len == 6) { - kb_state.state = KEYBOARD; - /* wake up someone waiting for this. - But will this ever be used, as Linux keeps its own time. - Perhaps for synchronization purposes? */ - /* wake_up_interruptible(&clock_wait); */ - } - break; - - case RESYNC: - if (kb_state.len <= 0 || IS_SYNC_CODE(scancode)) { - kb_state.state = KEYBOARD; - goto interpret_scancode; - } - kb_state.len--; - break; - } - } - -#if 0 - if (acia_stat & ACIA_CTS) - /* cannot happen */; -#endif - - if (acia_stat & (ACIA_FE | ACIA_PE)) { - printk("Error in keyboard communication\n"); - } - - /* handle_scancode() can take a lot of time, so check again if - * some character arrived - */ - goto repeat; -} - -/* - * I write to the keyboard without using interrupts, I poll instead. - * This takes for the maximum length string allowed (7) at 7812.5 baud - * 8 data 1 start 1 stop bit: 9.0 ms - * If this takes too long for normal operation, interrupt driven writing - * is the solution. (I made a feeble attempt in that direction but I - * kept it simple for now.) - */ -void ikbd_write(const char *str, int len) -{ - u_char acia_stat; - - if ((len < 1) || (len > 7)) - panic("ikbd: maximum string length exceeded"); - while (len) { - acia_stat = acia.key_ctrl; - if (acia_stat & ACIA_TDRE) { - acia.key_data = *str++; - len--; - } - } -} - -/* Reset (without touching the clock) */ -void ikbd_reset(void) -{ - static const char cmd[2] = { 0x80, 0x01 }; - - ikbd_write(cmd, 2); - - /* - * if all's well code 0xF1 is returned, else the break codes of - * all keys making contact - */ -} - -/* Set mouse button action */ -void ikbd_mouse_button_action(int mode) -{ - char cmd[2] = { 0x07, mode }; - - ikbd_write(cmd, 2); -} - -/* Set relative mouse position reporting */ -void ikbd_mouse_rel_pos(void) -{ - static const char cmd[1] = { 0x08 }; - - ikbd_write(cmd, 1); -} -EXPORT_SYMBOL(ikbd_mouse_rel_pos); - -/* Set absolute mouse position reporting */ -void ikbd_mouse_abs_pos(int xmax, int ymax) -{ - char cmd[5] = { 0x09, xmax>>8, xmax&0xFF, ymax>>8, ymax&0xFF }; - - ikbd_write(cmd, 5); -} - -/* Set mouse keycode mode */ -void ikbd_mouse_kbd_mode(int dx, int dy) -{ - char cmd[3] = { 0x0A, dx, dy }; - - ikbd_write(cmd, 3); -} - -/* Set mouse threshold */ -void ikbd_mouse_thresh(int x, int y) -{ - char cmd[3] = { 0x0B, x, y }; - - ikbd_write(cmd, 3); -} -EXPORT_SYMBOL(ikbd_mouse_thresh); - -/* Set mouse scale */ -void ikbd_mouse_scale(int x, int y) -{ - char cmd[3] = { 0x0C, x, y }; - - ikbd_write(cmd, 3); -} - -/* Interrogate mouse position */ -void ikbd_mouse_pos_get(int *x, int *y) -{ - static const char cmd[1] = { 0x0D }; - - ikbd_write(cmd, 1); - - /* wait for returning bytes */ -} - -/* Load mouse position */ -void ikbd_mouse_pos_set(int x, int y) -{ - char cmd[6] = { 0x0E, 0x00, x>>8, x&0xFF, y>>8, y&0xFF }; - - ikbd_write(cmd, 6); -} - -/* Set Y=0 at bottom */ -void ikbd_mouse_y0_bot(void) -{ - static const char cmd[1] = { 0x0F }; - - ikbd_write(cmd, 1); -} - -/* Set Y=0 at top */ -void ikbd_mouse_y0_top(void) -{ - static const char cmd[1] = { 0x10 }; - - ikbd_write(cmd, 1); -} -EXPORT_SYMBOL(ikbd_mouse_y0_top); - -/* Resume */ -void ikbd_resume(void) -{ - static const char cmd[1] = { 0x11 }; - - ikbd_write(cmd, 1); -} - -/* Disable mouse */ -void ikbd_mouse_disable(void) -{ - static const char cmd[1] = { 0x12 }; - - ikbd_write(cmd, 1); -} -EXPORT_SYMBOL(ikbd_mouse_disable); - -/* Pause output */ -void ikbd_pause(void) -{ - static const char cmd[1] = { 0x13 }; - - ikbd_write(cmd, 1); -} - -/* Set joystick event reporting */ -void ikbd_joystick_event_on(void) -{ - static const char cmd[1] = { 0x14 }; - - ikbd_write(cmd, 1); -} - -/* Set joystick interrogation mode */ -void ikbd_joystick_event_off(void) -{ - static const char cmd[1] = { 0x15 }; - - ikbd_write(cmd, 1); -} - -/* Joystick interrogation */ -void ikbd_joystick_get_state(void) -{ - static const char cmd[1] = { 0x16 }; - - ikbd_write(cmd, 1); -} - -#if 0 -/* This disables all other ikbd activities !!!! */ -/* Set joystick monitoring */ -void ikbd_joystick_monitor(int rate) -{ - static const char cmd[2] = { 0x17, rate }; - - ikbd_write(cmd, 2); - - kb_state.state = JOYSTICK_MONITOR; -} -#endif - -/* some joystick routines not in yet (0x18-0x19) */ - -/* Disable joysticks */ -void ikbd_joystick_disable(void) -{ - static const char cmd[1] = { 0x1A }; - - ikbd_write(cmd, 1); -} - -/* Time-of-day clock set */ -void ikbd_clock_set(int year, int month, int day, int hour, int minute, int second) -{ - char cmd[7] = { 0x1B, year, month, day, hour, minute, second }; - - ikbd_write(cmd, 7); -} - -/* Interrogate time-of-day clock */ -void ikbd_clock_get(int *year, int *month, int *day, int *hour, int *minute, int second) -{ - static const char cmd[1] = { 0x1C }; - - ikbd_write(cmd, 1); -} - -/* Memory load */ -void ikbd_mem_write(int address, int size, char *data) -{ - panic("Attempt to write data into keyboard memory"); -} - -/* Memory read */ -void ikbd_mem_read(int address, char data[6]) -{ - char cmd[3] = { 0x21, address>>8, address&0xFF }; - - ikbd_write(cmd, 3); - - /* receive data and put it in data */ -} - -/* Controller execute */ -void ikbd_exec(int address) -{ - char cmd[3] = { 0x22, address>>8, address&0xFF }; - - ikbd_write(cmd, 3); -} - -/* Status inquiries (0x87-0x9A) not yet implemented */ - -/* Set the state of the caps lock led. */ -void atari_kbd_leds(unsigned int leds) -{ - char cmd[6] = {32, 0, 4, 1, 254 + ((leds & 4) != 0), 0}; - - ikbd_write(cmd, 6); -} - -/* - * The original code sometimes left the interrupt line of - * the ACIAs low forever. I hope, it is fixed now. - * - * Martin Rogge, 20 Aug 1995 - */ - -static int atari_keyb_done = 0; - -int atari_keyb_init(void) -{ - int error; - - if (atari_keyb_done) - return 0; - - kb_state.state = KEYBOARD; - kb_state.len = 0; - - error = request_irq(IRQ_MFP_ACIA, atari_keyboard_interrupt, - IRQ_TYPE_SLOW, "keyboard,mouse,MIDI", - atari_keyboard_interrupt); - if (error) - return error; - - atari_turnoff_irq(IRQ_MFP_ACIA); - do { - /* reset IKBD ACIA */ - acia.key_ctrl = ACIA_RESET | - ((atari_switches & ATARI_SWITCH_IKBD) ? - ACIA_RHTID : 0); - (void)acia.key_ctrl; - (void)acia.key_data; - - /* reset MIDI ACIA */ - acia.mid_ctrl = ACIA_RESET | - ((atari_switches & ATARI_SWITCH_MIDI) ? - ACIA_RHTID : 0); - (void)acia.mid_ctrl; - (void)acia.mid_data; - - /* divide 500kHz by 64 gives 7812.5 baud */ - /* 8 data no parity 1 start 1 stop bit */ - /* receive interrupt enabled */ - /* RTS low (except if switch selected), transmit interrupt disabled */ - acia.key_ctrl = (ACIA_DIV64|ACIA_D8N1S|ACIA_RIE) | - ((atari_switches & ATARI_SWITCH_IKBD) ? - ACIA_RHTID : ACIA_RLTID); - - acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | - ((atari_switches & ATARI_SWITCH_MIDI) ? - ACIA_RHTID : 0); - - /* make sure the interrupt line is up */ - } while ((st_mfp.par_dt_reg & 0x10) == 0); - - /* enable ACIA Interrupts */ - st_mfp.active_edge &= ~0x10; - atari_turnon_irq(IRQ_MFP_ACIA); - - ikbd_self_test = 1; - ikbd_reset(); - /* wait for a period of inactivity (here: 0.25s), then assume the IKBD's - * self-test is finished */ - self_test_last_rcv = jiffies; - while (time_before(jiffies, self_test_last_rcv + HZ/4)) - barrier(); - /* if not incremented: no 0xf1 received */ - if (ikbd_self_test == 1) - printk(KERN_ERR "WARNING: keyboard self test failed!\n"); - ikbd_self_test = 0; - - ikbd_mouse_disable(); - ikbd_joystick_disable(); - -#ifdef FIXED_ATARI_JOYSTICK - atari_joystick_init(); -#endif - - // flag init done - atari_keyb_done = 1; - return 0; -} -EXPORT_SYMBOL_GPL(atari_keyb_init); |