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    Subject[patch 04/33] m68k: Atari keyboard and mouse support.
    From: Michael Schmitz <schmitz@opal.biophys.uni-duesseldorf.de>

    Atari keyboard and mouse support.
    (reformating and Kconfig fixes by Roman Zippel)

    Signed-off-by: Michael Schmitz <schmitz@debian.org>
    Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
    Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
    ---
    arch/m68k/Kconfig | 3
    arch/m68k/atari/Makefile | 1
    arch/m68k/atari/atakeyb.c | 730 +++++++++++++++++++++++++++++++++++++++
    drivers/input/keyboard/Kconfig | 11
    drivers/input/keyboard/Makefile | 1
    drivers/input/keyboard/atakbd.c | 134 +++++++
    drivers/input/mouse/Kconfig | 11
    drivers/input/mouse/Makefile | 1
    drivers/input/mouse/atarimouse.c | 160 ++++++++
    include/asm-m68k/atarikb.h | 6
    include/linux/input.h | 1
    11 files changed, 1059 insertions(+)

    --- linux-m68k-2.6.21.orig/arch/m68k/Kconfig
    +++ linux-m68k-2.6.21/arch/m68k/Kconfig
    @@ -409,6 +409,9 @@ config STRAM_PROC
    help
    Say Y here to report ST-RAM usage statistics in /proc/stram.

    +config ATARI_KBD_CORE
    + bool
    +
    config HEARTBEAT
    bool "Use power LED as a heartbeat" if AMIGA || APOLLO || ATARI || MAC ||Q40
    default y if !AMIGA && !APOLLO && !ATARI && !MAC && !Q40 && HP300
    --- linux-m68k-2.6.21.orig/arch/m68k/atari/Makefile
    +++ linux-m68k-2.6.21/arch/m68k/atari/Makefile
    @@ -8,3 +8,4 @@ obj-y := config.o time.o debug.o ataint
    ifeq ($(CONFIG_PCI),y)
    obj-$(CONFIG_HADES) += hades-pci.o
    endif
    +obj-$(CONFIG_ATARI_KBD_CORE) += atakeyb.o
    --- /dev/null
    +++ linux-m68k-2.6.21/arch/m68k/atari/atakeyb.c
    @@ -0,0 +1,730 @@
    +/*
    + * linux/atari/atakeyb.c
    + *
    + * 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
    + */
    +
    +#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>
    +
    +static void atakeyb_rep(unsigned long ignore);
    +extern unsigned int keymap_count;
    +
    +/* Hook for MIDI serial driver */
    +void (*atari_MIDI_interrupt_hook) (void);
    +/* Hook for mouse driver */
    +void (*atari_mouse_interrupt_hook) (char *);
    +/* 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 *);
    +
    +/* 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]
    + */
    +
    +static u_short ataplain_map[NR_KEYS] __initdata = {
    + 0xf200, 0xf01b, 0xf031, 0xf032, 0xf033, 0xf034, 0xf035, 0xf036,
    + 0xf037, 0xf038, 0xf039, 0xf030, 0xf02d, 0xf03d, 0xf008, 0xf009,
    + 0xfb71, 0xfb77, 0xfb65, 0xfb72, 0xfb74, 0xfb79, 0xfb75, 0xfb69,
    + 0xfb6f, 0xfb70, 0xf05b, 0xf05d, 0xf201, 0xf702, 0xfb61, 0xfb73,
    + 0xfb64, 0xfb66, 0xfb67, 0xfb68, 0xfb6a, 0xfb6b, 0xfb6c, 0xf03b,
    + 0xf027, 0xf060, 0xf700, 0xf05c, 0xfb7a, 0xfb78, 0xfb63, 0xfb76,
    + 0xfb62, 0xfb6e, 0xfb6d, 0xf02c, 0xf02e, 0xf02f, 0xf700, 0xf200,
    + 0xf703, 0xf020, 0xf207, 0xf100, 0xf101, 0xf102, 0xf103, 0xf104,
    + 0xf105, 0xf106, 0xf107, 0xf108, 0xf109, 0xf200, 0xf200, 0xf114,
    + 0xf603, 0xf200, 0xf30b, 0xf601, 0xf200, 0xf602, 0xf30a, 0xf200,
    + 0xf600, 0xf200, 0xf115, 0xf07f, 0xf200, 0xf200, 0xf200, 0xf200,
    + 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
    + 0xf200, 0xf1ff, 0xf11b, 0xf312, 0xf313, 0xf30d, 0xf30c, 0xf307,
    + 0xf308, 0xf309, 0xf304, 0xf305, 0xf306, 0xf301, 0xf302, 0xf303,
    + 0xf300, 0xf310, 0xf30e, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
    + 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200
    +};
    +
    +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;
    +
    +#define DEFAULT_KEYB_REP_DELAY (HZ/4)
    +#define DEFAULT_KEYB_REP_RATE (HZ/25)
    +
    +/* These could be settable by some ioctl() in future... */
    +static unsigned int key_repeat_delay = DEFAULT_KEYB_REP_DELAY;
    +static unsigned int key_repeat_rate = DEFAULT_KEYB_REP_RATE;
    +
    +static unsigned char rep_scancode;
    +static struct timer_list atakeyb_rep_timer = {
    + .function = atakeyb_rep,
    +};
    +
    +static void atakeyb_rep(unsigned long ignore)
    +{
    + /* Disable keyboard for the time we call handle_scancode(), else a race
    + * in the keyboard tty queue may happen */
    + atari_disable_irq(IRQ_MFP_ACIA);
    + del_timer(&atakeyb_rep_timer);
    +
    + /* A keyboard int may have come in before we disabled the irq, so
    + * double-check whether rep_scancode is still != 0 */
    + if (rep_scancode) {
    + init_timer(&atakeyb_rep_timer);
    + atakeyb_rep_timer.expires = jiffies + key_repeat_rate;
    + add_timer(&atakeyb_rep_timer);
    +
    + //handle_scancode(rep_scancode, 1);
    + if (atari_input_keyboard_interrupt_hook)
    + atari_input_keyboard_interrupt_hook(rep_scancode, 1);
    + }
    +
    + atari_enable_irq(IRQ_MFP_ACIA);
    +}
    +
    +
    +/* ++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. Therefor 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. Loosing 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;
    + /* Turn off autorepeating in case a break code has been lost */
    + del_timer(&atakeyb_rep_timer);
    + rep_scancode = 0;
    + 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 = plain_map[scancode], keytyp;
    +
    + set_bit(scancode, broken_keys);
    + self_test_last_rcv = jiffies;
    + keyval = plain_map[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 0 // FIXME; hangs at boot
    + if (break_flag) {
    + del_timer(&atakeyb_rep_timer);
    + rep_scancode = 0;
    + } else {
    + del_timer(&atakeyb_rep_timer);
    + rep_scancode = scancode;
    + atakeyb_rep_timer.expires = jiffies + key_repeat_delay;
    + add_timer(&atakeyb_rep_timer);
    + }
    +#endif
    +
    + // handle_scancode(scancode, !break_flag);
    + 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_mouse_interrupt_hook)
    + atari_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);
    +}
    +
    +/* 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);
    +}
    +
    +/* 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);
    +}
    +
    +/* 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);
    +}
    +
    +/* 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 __init atari_keyb_init(void)
    +{
    + if (atari_keyb_done)
    + return 0;
    +
    + /* setup key map */
    + memcpy(key_maps[0], ataplain_map, sizeof(plain_map));
    +
    + kb_state.state = KEYBOARD;
    + kb_state.len = 0;
    +
    + request_irq(IRQ_MFP_ACIA, atari_keyboard_interrupt, IRQ_TYPE_SLOW,
    + "keyboard/mouse/MIDI", atari_keyboard_interrupt);
    +
    + 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 ((mfp.par_dt_reg & 0x10) == 0);
    +
    + /* enable ACIA Interrupts */
    + 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;
    +}
    +
    +
    +int atari_kbdrate(struct kbd_repeat *k)
    +{
    + if (k->delay > 0) {
    + /* convert from msec to jiffies */
    + key_repeat_delay = (k->delay * HZ + 500) / 1000;
    + if (key_repeat_delay < 1)
    + key_repeat_delay = 1;
    + }
    + if (k->period > 0) {
    + key_repeat_rate = (k->period * HZ + 500) / 1000;
    + if (key_repeat_rate < 1)
    + key_repeat_rate = 1;
    + }
    +
    + k->delay = key_repeat_delay * 1000 / HZ;
    + k->period = key_repeat_rate * 1000 / HZ;
    +
    + return 0;
    +}
    +
    +int atari_kbd_translate(unsigned char keycode, unsigned char *keycodep, char raw_mode)
    +{
    +#ifdef CONFIG_MAGIC_SYSRQ
    + /* ALT+HELP pressed? */
    + if ((keycode == 98) && ((shift_state & 0xff) == 8))
    + *keycodep = 0xff;
    + else
    +#endif
    + *keycodep = keycode;
    + return 1;
    +}
    --- linux-m68k-2.6.21.orig/drivers/input/keyboard/Kconfig
    +++ linux-m68k-2.6.21/drivers/input/keyboard/Kconfig
    @@ -164,6 +164,17 @@ config KEYBOARD_AMIGA
    To compile this driver as a module, choose M here: the
    module will be called amikbd.

    +config KEYBOARD_ATARI
    + tristate "Atari keyboard"
    + depends on ATARI
    + select ATARI_KBD_CORE
    + help
    + Say Y here if you are running Linux on any Atari and have a keyboard
    + attached.
    +
    + To compile this driver as a module, choose M here: the
    + module will be called atakbd.
    +
    config KEYBOARD_HIL_OLD
    tristate "HP HIL keyboard support (simple driver)"
    depends on GSC || HP300
    --- linux-m68k-2.6.21.orig/drivers/input/keyboard/Makefile
    +++ linux-m68k-2.6.21/drivers/input/keyboard/Makefile
    @@ -9,6 +9,7 @@ obj-$(CONFIG_KEYBOARD_SUNKBD) += sunkbd
    obj-$(CONFIG_KEYBOARD_LKKBD) += lkkbd.o
    obj-$(CONFIG_KEYBOARD_XTKBD) += xtkbd.o
    obj-$(CONFIG_KEYBOARD_AMIGA) += amikbd.o
    +obj-$(CONFIG_KEYBOARD_ATARI) += atakbd.o
    obj-$(CONFIG_KEYBOARD_LOCOMO) += locomokbd.o
    obj-$(CONFIG_KEYBOARD_NEWTON) += newtonkbd.o
    obj-$(CONFIG_KEYBOARD_STOWAWAY) += stowaway.o
    --- /dev/null
    +++ linux-m68k-2.6.21/drivers/input/keyboard/atakbd.c
    @@ -0,0 +1,134 @@
    +/*
    + * atakbd.c
    + *
    + * Copyright (c) 2005 Michael Schmitz
    + *
    + * Based on amikbd.c, which is
    + *
    + * Copyright (c) 2000-2001 Vojtech Pavlik
    + *
    + * Based on the work of:
    + * Hamish Macdonald
    + */
    +
    +/*
    + * Atari keyboard driver for Linux/m68k
    + *
    + * The low level init and interrupt stuff is handled in arch/mm68k/atari/atakeyb.c
    + * (the keyboard ACIA also handles the mouse and joystick data, and the keyboard
    + * interrupt is shared with the MIDI ACIA so MIDI data also get handled there).
    + * This driver only deals with handing key events off to the input layer.
    + */
    +
    +/*
    + * 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/input.h>
    +#include <linux/delay.h>
    +#include <linux/interrupt.h>
    +
    +#include <asm/atariints.h>
    +#include <asm/atarihw.h>
    +#include <asm/atarikb.h>
    +#include <asm/irq.h>
    +
    +MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>");
    +MODULE_DESCRIPTION("Atari keyboard driver");
    +MODULE_LICENSE("GPL");
    +
    +static unsigned char atakbd_keycode[0x72];
    +
    +static struct input_dev *atakbd_dev;
    +
    +static void atakbd_interrupt(unsigned char scancode, char down)
    +{
    +
    + if (scancode < 0x72) { /* scancodes < 0xf2 are keys */
    +
    + // report raw events here?
    +
    + scancode = atakbd_keycode[scancode];
    +
    + if (scancode == KEY_CAPSLOCK) { /* CapsLock is a toggle switch key on Amiga */
    + input_report_key(atakbd_dev, scancode, 1);
    + input_report_key(atakbd_dev, scancode, 0);
    + input_sync(atakbd_dev);
    + } else {
    + input_report_key(atakbd_dev, scancode, down);
    + input_sync(atakbd_dev);
    + }
    + } else /* scancodes >= 0xf2 are mouse data, most likely */
    + printk(KERN_INFO "atakbd: unhandled scancode %x\n", scancode);
    +
    + return;
    +}
    +
    +static int __init atakbd_init(void)
    +{
    + int i;
    +
    + if (!ATARIHW_PRESENT(ST_MFP))
    + return -EIO;
    +
    + // TODO: request_mem_region if not done in arch code
    +
    + if (!(atakbd_dev = input_allocate_device()))
    + return -ENOMEM;
    +
    + // need to init core driver if not already done so
    + if (atari_keyb_init())
    + return -ENODEV;
    +
    + atakbd_dev->name = "Atari Keyboard";
    + atakbd_dev->phys = "atakbd/input0";
    + atakbd_dev->id.bustype = BUS_ATARI;
    + atakbd_dev->id.vendor = 0x0001;
    + atakbd_dev->id.product = 0x0001;
    + atakbd_dev->id.version = 0x0100;
    +
    + atakbd_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
    + atakbd_dev->keycode = atakbd_keycode;
    + atakbd_dev->keycodesize = sizeof(unsigned char);
    + atakbd_dev->keycodemax = ARRAY_SIZE(atakbd_keycode);
    +
    + for (i = 1; i < 0x72; i++) {
    + atakbd_keycode[i] = i;
    + set_bit(atakbd_keycode[i], atakbd_dev->keybit);
    + }
    +
    + input_register_device(atakbd_dev);
    +
    + atari_input_keyboard_interrupt_hook = atakbd_interrupt;
    +
    + printk(KERN_INFO "input: %s at IKBD ACIA\n", atakbd_dev->name);
    +
    + return 0;
    +}
    +
    +static void __exit atakbd_exit(void)
    +{
    + atari_input_keyboard_interrupt_hook = NULL;
    + input_unregister_device(atakbd_dev);
    +}
    +
    +module_init(atakbd_init);
    +module_exit(atakbd_exit);
    --- linux-m68k-2.6.21.orig/drivers/input/mouse/Kconfig
    +++ linux-m68k-2.6.21/drivers/input/mouse/Kconfig
    @@ -96,6 +96,17 @@ config MOUSE_AMIGA
    To compile this driver as a module, choose M here: the
    module will be called amimouse.

    +config MOUSE_ATARI
    + tristate "Atari mouse"
    + depends on ATARI
    + select ATARI_KBD_CORE
    + help
    + Say Y here if you have an Atari and want its native mouse
    + supported by the kernel.
    +
    + To compile this driver as a module, choose M here: the
    + module will be called atarimouse.
    +
    config MOUSE_RISCPC
    tristate "Acorn RiscPC mouse"
    depends on ARCH_ACORN
    --- linux-m68k-2.6.21.orig/drivers/input/mouse/Makefile
    +++ linux-m68k-2.6.21/drivers/input/mouse/Makefile
    @@ -5,6 +5,7 @@
    # Each configuration option enables a list of files.

    obj-$(CONFIG_MOUSE_AMIGA) += amimouse.o
    +obj-$(CONFIG_MOUSE_ATARI) += atarimouse.o
    obj-$(CONFIG_MOUSE_RISCPC) += rpcmouse.o
    obj-$(CONFIG_MOUSE_INPORT) += inport.o
    obj-$(CONFIG_MOUSE_LOGIBM) += logibm.o
    --- /dev/null
    +++ linux-m68k-2.6.21/drivers/input/mouse/atarimouse.c
    @@ -0,0 +1,160 @@
    +/*
    + * Atari mouse driver for Linux/m68k
    + *
    + * Copyright (c) 2005 Michael Schmitz
    + *
    + * Based on:
    + * Amiga mouse driver for Linux/m68k
    + *
    + * Copyright (c) 2000-2002 Vojtech Pavlik
    + *
    + */
    +/*
    + * The low level init and interrupt stuff is handled in arch/mm68k/atari/atakeyb.c
    + * (the keyboard ACIA also handles the mouse and joystick data, and the keyboard
    + * interrupt is shared with the MIDI ACIA so MIDI data also get handled there).
    + * This driver only deals with handing key events off to the input layer.
    + *
    + * Largely based on the old:
    + *
    + * Atari Mouse Driver for Linux
    + * by Robert de Vries (robert@and.nl) 19Jul93
    + *
    + * 16 Nov 1994 Andreas Schwab
    + * Compatibility with busmouse
    + * Support for three button mouse (shamelessly stolen from MiNT)
    + * third button wired to one of the joystick directions on joystick 1
    + *
    + * 1996/02/11 Andreas Schwab
    + * Module support
    + * Allow multiple open's
    + *
    + * Converted to use new generic busmouse code. 5 Apr 1998
    + * Russell King <rmk@arm.uk.linux.org>
    + */
    +
    +
    +/*
    + * This program is free software; you can redistribute it and/or modify it
    + * under the terms of the GNU General Public License version 2 as published by
    + * the Free Software Foundation
    + */
    +
    +#include <linux/module.h>
    +#include <linux/init.h>
    +#include <linux/input.h>
    +#include <linux/interrupt.h>
    +
    +#include <asm/irq.h>
    +#include <asm/setup.h>
    +#include <asm/system.h>
    +#include <asm/uaccess.h>
    +#include <asm/atarihw.h>
    +#include <asm/atarikb.h>
    +#include <asm/atariints.h>
    +
    +MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>");
    +MODULE_DESCRIPTION("Atari mouse driver");
    +MODULE_LICENSE("GPL");
    +
    +static int mouse_threshold[2] = {2,2};
    +
    +#ifdef __MODULE__
    +MODULE_PARM(mouse_threshold, "2i");
    +#endif
    +#ifdef FIXED_ATARI_JOYSTICK
    +extern int atari_mouse_buttons;
    +#endif
    +static int atamouse_used = 0;
    +
    +static struct input_dev *atamouse_dev;
    +
    +static void atamouse_interrupt(char *buf)
    +{
    + int buttons, dx, dy;
    +
    +/* ikbd_mouse_disable(); */
    +
    + buttons = (buf[0] & 1) | ((buf[0] & 2) << 1);
    +#ifdef FIXED_ATARI_JOYSTICK
    + buttons |= atari_mouse_buttons & 2;
    + atari_mouse_buttons = buttons;
    +#endif
    +/* ikbd_mouse_rel_pos(); */
    +
    + /* only relative events get here */
    + dx = buf[1];
    + dy = -buf[2];
    +
    + input_report_rel(atamouse_dev, REL_X, dx);
    + input_report_rel(atamouse_dev, REL_Y, dy);
    +
    + input_report_key(atamouse_dev, BTN_LEFT, buttons & 0x1);
    + input_report_key(atamouse_dev, BTN_MIDDLE, buttons & 0x2);
    + input_report_key(atamouse_dev, BTN_RIGHT, buttons & 0x4);
    +
    + input_sync(atamouse_dev);
    +
    + return;
    +}
    +
    +static int atamouse_open(struct input_dev *dev)
    +{
    + if (atamouse_used++)
    + return 0;
    +
    +#ifdef FIXED_ATARI_JOYSTICK
    + atari_mouse_buttons = 0;
    +#endif
    + ikbd_mouse_y0_top();
    + ikbd_mouse_thresh(mouse_threshold[0], mouse_threshold[1]);
    + ikbd_mouse_rel_pos();
    + atari_input_mouse_interrupt_hook = atamouse_interrupt;
    + return 0;
    +}
    +
    +static void atamouse_close(struct input_dev *dev)
    +{
    + if (!--atamouse_used) {
    + ikbd_mouse_disable();
    + atari_mouse_interrupt_hook = NULL;
    + }
    +}
    +
    +static int __init atamouse_init(void)
    +{
    + if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP))
    + return -ENODEV;
    +
    + if (!(atamouse_dev = input_allocate_device()))
    + return -ENOMEM;
    +
    + if (!(atari_keyb_init()))
    + return -ENODEV;
    +
    + atamouse_dev->name = "Atari mouse";
    + atamouse_dev->phys = "atamouse/input0";
    + atamouse_dev->id.bustype = BUS_ATARI;
    + atamouse_dev->id.vendor = 0x0001;
    + atamouse_dev->id.product = 0x0002;
    + atamouse_dev->id.version = 0x0100;
    +
    + atamouse_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
    + atamouse_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
    + atamouse_dev->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
    + atamouse_dev->open = atamouse_open;
    + atamouse_dev->close = atamouse_close;
    +
    + input_register_device(atamouse_dev);
    +
    + printk(KERN_INFO "input: %s at keyboard ACIA\n", atamouse_dev->name);
    + return 0;
    +}
    +
    +static void __exit atamouse_exit(void)
    +{
    + input_unregister_device(atamouse_dev);
    +}
    +
    +module_init(atamouse_init);
    +module_exit(atamouse_exit);
    --- linux-m68k-2.6.21.orig/include/asm-m68k/atarikb.h
    +++ linux-m68k-2.6.21/include/asm-m68k/atarikb.h
    @@ -36,5 +36,11 @@ void ikbd_joystick_disable(void);
    extern void (*atari_MIDI_interrupt_hook) (void);
    /* Hook for mouse driver */
    extern void (*atari_mouse_interrupt_hook) (char *);
    +/* Hook for keyboard inputdev driver */
    +extern void (*atari_input_keyboard_interrupt_hook) (unsigned char, char);
    +/* Hook for mouse inputdev driver */
    +extern void (*atari_input_mouse_interrupt_hook) (char *);
    +
    +int atari_keyb_init(void);

    #endif /* _LINUX_ATARIKB_H */
    --- linux-m68k-2.6.21.orig/include/linux/input.h
    +++ linux-m68k-2.6.21/include/linux/input.h
    @@ -676,6 +676,7 @@ struct input_absinfo {
    #define BUS_I2C 0x18
    #define BUS_HOST 0x19
    #define BUS_GSC 0x1A
    +#define BUS_ATARI 0x1B

    /*
    * Values describing the status of a force-feedback effect
    --
    Gr{oetje,eeting}s,
    Geert

    --
    Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

    In personal conversations with technical people, I call myself a hacker. But
    when I'm talking to journalists I just say "programmer" or something like that.
    -- Linus Torvalds

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