m68k: Atari keyboard and mouse support. (c04cb856) · Commits · e / devices / android_kernel_fairphone_FP3

arch/m68k/Kconfig

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Original line number	Diff line number	Diff line
		@@ -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

arch/m68k/atari/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -8,3 +8,4 @@ obj-y := config.o time.o debug.o ataints.o stdma.o \
		ifeq ($(CONFIG_PCI),y)
		obj-$(CONFIG_HADES) += hades-pci.o
		endif
		obj-$(CONFIG_ATARI_KBD_CORE) += atakeyb.o

arch/m68k/atari/atakeyb.c

0 → 100644

+730 −0

Original line number	Diff line number	Diff line
		/*
		* 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;
		}

drivers/input/keyboard/Kconfig

+11 −0

Original line number	Diff line number	Diff line
		@@ -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

drivers/input/keyboard/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -9,6 +9,7 @@ obj-$(CONFIG_KEYBOARD_SUNKBD) += sunkbd.o
		obj-$(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