mac_keyb.c

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/*
 * drivers/char/mac_keyb.c
 *
 * Keyboard driver for Power Macintosh computers.
 *
 * Adapted from drivers/char/keyboard.c by Paul Mackerras
 * (see that file for its authors and contributors).
 *
 * Copyright (C) 1996 Paul Mackerras.
 *
 * Adapted to ADB changes and support for more devices by
 * Benjamin Herrenschmidt. Adapted from code in MkLinux
 * and reworked.
 *
 * Supported devices:
 *
 * - Standard 1 button mouse
 * - All standard Apple Extended protocol (handler ID 4)
 * - mouseman and trackman mice & trackballs
 * - PowerBook Trackpad (default setup: enable tapping)
 * - MicroSpeed mouse & trackball (needs testing)
 * - CH Products Trackball Pro (needs testing)
 * - Contour Design (Contour Mouse)
 * - Hunter digital (NoHandsMouse)
 * - Kensignton TurboMouse 5 (needs testing)
 * - Mouse Systems A3 mice and trackballs <[e-mail]>
 * - MacAlly 2-buttons mouse (needs testing) <[e-mail]>
 *
 * To do:
 *
 * Improve Kensignton support, add MacX support as a dynamic
 * option (not a compile-time option).
 */

#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/tty.h>
#include <linux/mm.h>
#include <linux/signal.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/tty_flip.h>
#include <linux/config.h>
#include <linux/notifier.h>

#include <asm/bitops.h>

#include <linux/adb.h>
#include <linux/cuda.h>
#include <linux/pmu.h>
#include <linux/kbd_kern.h>
#include <linux/kbd_ll.h>

#ifdef CONFIG_PMAC_BACKLIGHT
#include <asm/backlight.h>
#endif

#define KEYB_KEYREG	0	/* register # for key up/down data */
#define KEYB_LEDREG	2	/* register # for leds on ADB keyboard */
#define MOUSE_DATAREG	0	/* reg# for movement/button codes from mouse */

static int adb_message_handler(struct notifier_block *, unsigned long, void *);
static struct notifier_block mackeyb_adb_notifier = {
	adb_message_handler,
	NULL,
	0
};

/* this map indicates which keys shouldn't autorepeat. */
static unsigned char dont_repeat[128] = {
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,	/* esc...option */
	0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, /* fn, num lock */
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, /* scroll lock */
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, /* R modifiers */
};

/* Simple translation table for the SysRq keys */

#ifdef CONFIG_MAGIC_SYSRQ
unsigned char mackbd_sysrq_xlate[128] =
	"asdfhgzxcv\000bqwer"				/* 0x00 - 0x0f */
	"yt123465=97-80o]"				/* 0x10 - 0x1f */
	"u[ip\rlj'k;\\,/nm."				/* 0x20 - 0x2f */
	"\t `\177\000\033\000\000\000\000\000\000\000\000\000\000"
							/* 0x30 - 0x3f */
	"\000\000\000*\000+\000\000\000\000\000/\r\000-\000"
							/* 0x40 - 0x4f */
	"\000\0000123456789\000\000\000"		/* 0x50 - 0x5f */
	"\205\206\207\203\210\211\000\213\000\215\000\000\000\000\000\212\000\214";
							/* 0x60 - 0x6f */
#endif

static u_short macplain_map[NR_KEYS] __initdata = {
	0xfb61,	0xfb73,	0xfb64,	0xfb66,	0xfb68,	0xfb67,	0xfb7a,	0xfb78,
	0xfb63,	0xfb76,	0xf200,	0xfb62,	0xfb71,	0xfb77,	0xfb65,	0xfb72,
	0xfb79,	0xfb74,	0xf031,	0xf032,	0xf033,	0xf034,	0xf036,	0xf035,
	0xf03d,	0xf039,	0xf037,	0xf02d,	0xf038,	0xf030,	0xf05d,	0xfb6f,
	0xfb75,	0xf05b,	0xfb69,	0xfb70,	0xf201,	0xfb6c,	0xfb6a,	0xf027,
	0xfb6b,	0xf03b,	0xf05c,	0xf02c,	0xf02f,	0xfb6e,	0xfb6d,	0xf02e,
	0xf009,	0xf020,	0xf060,	0xf07f,	0xf200,	0xf01b,	0xf702,	0xf703,
	0xf700,	0xf207,	0xf701,	0xf601,	0xf602,	0xf600,	0xf603,	0xf200,
	0xf200,	0xf310,	0xf200,	0xf30c,	0xf200,	0xf30a,	0xf200,	0xf208,
	0xf200,	0xf200,	0xf200,	0xf30d,	0xf30e,	0xf200,	0xf30b,	0xf200,
	0xf200,	0xf200,	0xf300,	0xf301,	0xf302,	0xf303,	0xf304,	0xf305,
	0xf306,	0xf307,	0xf200,	0xf308,	0xf309,	0xf200,	0xf200,	0xf200,
	0xf104,	0xf105,	0xf106,	0xf102,	0xf107,	0xf108,	0xf200,	0xf10a,
	0xf200,	0xf10c,	0xf200,	0xf209,	0xf200,	0xf109,	0xf200,	0xf10b,
	0xf200,	0xf11d,	0xf115,	0xf114,	0xf118,	0xf116,	0xf103,	0xf117,
	0xf101,	0xf119,	0xf100,	0xf700,	0xf701,	0xf702,	0xf200,	0xf200,
};

static u_short macshift_map[NR_KEYS] __initdata = {
	0xfb41,	0xfb53,	0xfb44,	0xfb46,	0xfb48,	0xfb47,	0xfb5a,	0xfb58,
	0xfb43,	0xfb56,	0xf200,	0xfb42,	0xfb51,	0xfb57,	0xfb45,	0xfb52,
	0xfb59,	0xfb54,	0xf021,	0xf040,	0xf023,	0xf024,	0xf05e,	0xf025,
	0xf02b,	0xf028,	0xf026,	0xf05f,	0xf02a,	0xf029,	0xf07d,	0xfb4f,
	0xfb55,	0xf07b,	0xfb49,	0xfb50,	0xf201,	0xfb4c,	0xfb4a,	0xf022,
	0xfb4b,	0xf03a,	0xf07c,	0xf03c,	0xf03f,	0xfb4e,	0xfb4d,	0xf03e,
	0xf009,	0xf020,	0xf07e,	0xf07f,	0xf200,	0xf01b,	0xf702,	0xf703,
	0xf700,	0xf207,	0xf701,	0xf601,	0xf602,	0xf600,	0xf603,	0xf200,
	0xf200,	0xf310,	0xf200,	0xf30c,	0xf200,	0xf30a,	0xf200,	0xf208,
	0xf200,	0xf200,	0xf200,	0xf30d,	0xf30e,	0xf200,	0xf30b,	0xf200,
	0xf200,	0xf200,	0xf300,	0xf301,	0xf302,	0xf303,	0xf304,	0xf305,
	0xf306,	0xf307,	0xf200,	0xf308,	0xf309,	0xf200,	0xf200,	0xf200,
	0xf10e,	0xf10f,	0xf110,	0xf10c,	0xf111,	0xf112,	0xf200,	0xf10a,
	0xf200,	0xf10c,	0xf200,	0xf203,	0xf200,	0xf113,	0xf200,	0xf10b,
	0xf200,	0xf11d,	0xf115,	0xf114,	0xf20b,	0xf116,	0xf10d,	0xf117,
	0xf10b,	0xf20a,	0xf10a,	0xf700,	0xf701,	0xf702,	0xf200,	0xf200,
};

static u_short macaltgr_map[NR_KEYS] __initdata = {
	0xf914,	0xfb73,	0xf917,	0xf919,	0xfb68,	0xfb67,	0xfb7a,	0xfb78,
	0xf916,	0xfb76,	0xf200,	0xf915,	0xfb71,	0xfb77,	0xf918,	0xfb72,
	0xfb79,	0xfb74,	0xf200,	0xf040,	0xf200,	0xf024,	0xf200,	0xf200,
	0xf200,	0xf05d,	0xf07b,	0xf05c,	0xf05b,	0xf07d,	0xf07e,	0xfb6f,
	0xfb75,	0xf200,	0xfb69,	0xfb70,	0xf201,	0xfb6c,	0xfb6a,	0xf200,
	0xfb6b,	0xf200,	0xf200,	0xf200,	0xf200,	0xfb6e,	0xfb6d,	0xf200,
	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,	0xf702,	0xf703,
	0xf700,	0xf207,	0xf701,	0xf601,	0xf602,	0xf600,	0xf603,	0xf200,
	0xf200,	0xf310,	0xf200,	0xf30c,	0xf200,	0xf30a,	0xf200,	0xf208,
	0xf200,	0xf200,	0xf200,	0xf30d,	0xf30e,	0xf200,	0xf30b,	0xf200,
	0xf200,	0xf200,	0xf90a,	0xf90b,	0xf90c,	0xf90d,	0xf90e,	0xf90f,
	0xf910,	0xf911,	0xf200,	0xf912,	0xf913,	0xf200,	0xf200,	0xf200,
	0xf510,	0xf511,	0xf512,	0xf50e,	0xf513,	0xf514,	0xf200,	0xf516,
	0xf200,	0xf10c,	0xf200,	0xf202,	0xf200,	0xf515,	0xf200,	0xf517,
	0xf200,	0xf11d,	0xf115,	0xf114,	0xf118,	0xf116,	0xf50f,	0xf117,
	0xf50d,	0xf119,	0xf50c,	0xf700,	0xf701,	0xf702,	0xf200,	0xf200,
};

static u_short macctrl_map[NR_KEYS] __initdata = {
	0xf001,	0xf013,	0xf004,	0xf006,	0xf008,	0xf007,	0xf01a,	0xf018,
	0xf003,	0xf016,	0xf200,	0xf002,	0xf011,	0xf017,	0xf005,	0xf012,
	0xf019,	0xf014,	0xf200,	0xf000,	0xf01b,	0xf01c,	0xf01e,	0xf01d,
	0xf200,	0xf200,	0xf01f,	0xf01f,	0xf07f,	0xf200,	0xf01d,	0xf00f,
	0xf015,	0xf01b,	0xf009,	0xf010,	0xf201,	0xf00c,	0xf00a,	0xf007,
	0xf00b,	0xf200,	0xf01c,	0xf200,	0xf07f,	0xf00e,	0xf00d,	0xf20e,
	0xf200,	0xf000,	0xf000,	0xf008,	0xf200,	0xf200,	0xf702,	0xf703,
	0xf700,	0xf207,	0xf701,	0xf601,	0xf602,	0xf600,	0xf603,	0xf200,
	0xf200,	0xf310,	0xf200,	0xf30c,	0xf200,	0xf30a,	0xf200,	0xf208,
	0xf200,	0xf200,	0xf200,	0xf30d,	0xf30e,	0xf200,	0xf30b,	0xf200,
	0xf200,	0xf200,	0xf300,	0xf301,	0xf302,	0xf303,	0xf304,	0xf305,
	0xf306,	0xf307,	0xf200,	0xf308,	0xf309,	0xf200,	0xf200,	0xf200,
	0xf104,	0xf105,	0xf106,	0xf102,	0xf107,	0xf108,	0xf200,	0xf10a,
	0xf200,	0xf10c,	0xf200,	0xf204,	0xf200,	0xf109,	0xf200,	0xf10b,
	0xf200,	0xf11d,	0xf115,	0xf114,	0xf118,	0xf116,	0xf103,	0xf117,
	0xf101,	0xf119,	0xf100,	0xf700,	0xf701,	0xf702,	0xf200,	0xf200,
};

static u_short macshift_ctrl_map[NR_KEYS] __initdata = {
	0xf001,	0xf013,	0xf004,	0xf006,	0xf008,	0xf007,	0xf01a,	0xf018,
	0xf003,	0xf016,	0xf200,	0xf002,	0xf011,	0xf017,	0xf005,	0xf012,
	0xf019,	0xf014,	0xf200,	0xf000,	0xf200,	0xf200,	0xf200,	0xf200,
	0xf200,	0xf200,	0xf200,	0xf01f,	0xf200,	0xf200,	0xf200,	0xf00f,
	0xf015,	0xf200,	0xf009,	0xf010,	0xf201,	0xf00c,	0xf00a,	0xf200,
	0xf00b,	0xf200,	0xf200,	0xf200,	0xf200,	0xf00e,	0xf00d,	0xf200,
	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,	0xf702,	0xf703,
	0xf700,	0xf207,	0xf701,	0xf601,	0xf602,	0xf600,	0xf603,	0xf200,
	0xf200,	0xf310,	0xf200,	0xf30c,	0xf200,	0xf30a,	0xf200,	0xf208,
	0xf200,	0xf200,	0xf200,	0xf30d,	0xf30e,	0xf200,	0xf30b,	0xf200,
	0xf200,	0xf200,	0xf300,	0xf301,	0xf302,	0xf303,	0xf304,	0xf305,
	0xf306,	0xf307,	0xf200,	0xf308,	0xf309,	0xf200,	0xf200,	0xf200,
	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,
	0xf200,	0xf10c,	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,
	0xf200,	0xf11d,	0xf115,	0xf114,	0xf118,	0xf116,	0xf200,	0xf117,
	0xf200,	0xf119,	0xf200,	0xf700,	0xf701,	0xf702,	0xf200,	0xf20c,
};

static u_short macalt_map[NR_KEYS] __initdata = {
	0xf861,	0xf873,	0xf864,	0xf866,	0xf868,	0xf867,	0xf87a,	0xf878,
	0xf863,	0xf876,	0xf200,	0xf862,	0xf871,	0xf877,	0xf865,	0xf872,
	0xf879,	0xf874,	0xf831,	0xf832,	0xf833,	0xf834,	0xf836,	0xf835,
	0xf83d,	0xf839,	0xf837,	0xf82d,	0xf838,	0xf830,	0xf85d,	0xf86f,
	0xf875,	0xf85b,	0xf869,	0xf870,	0xf80d,	0xf86c,	0xf86a,	0xf827,
	0xf86b,	0xf83b,	0xf85c,	0xf82c,	0xf82f,	0xf86e,	0xf86d,	0xf82e,
	0xf809,	0xf820,	0xf860,	0xf87f,	0xf200,	0xf81b,	0xf702,	0xf703,
	0xf700,	0xf207,	0xf701,	0xf210,	0xf211,	0xf600,	0xf603,	0xf200,
	0xf200,	0xf310,	0xf200,	0xf30c,	0xf200,	0xf30a,	0xf200,	0xf208,
	0xf200,	0xf200,	0xf200,	0xf30d,	0xf30e,	0xf200,	0xf30b,	0xf200,
	0xf200,	0xf200,	0xf900,	0xf901,	0xf902,	0xf903,	0xf904,	0xf905,
	0xf906,	0xf907,	0xf200,	0xf908,	0xf909,	0xf200,	0xf200,	0xf200,
	0xf504,	0xf505,	0xf506,	0xf502,	0xf507,	0xf508,	0xf200,	0xf50a,
	0xf200,	0xf10c,	0xf200,	0xf209,	0xf200,	0xf509,	0xf200,	0xf50b,
	0xf200,	0xf11d,	0xf115,	0xf114,	0xf118,	0xf116,	0xf503,	0xf117,
	0xf501,	0xf119,	0xf500,	0xf700,	0xf701,	0xf702,	0xf200,	0xf200,
};

static u_short macctrl_alt_map[NR_KEYS] __initdata = {
	0xf801,	0xf813,	0xf804,	0xf806,	0xf808,	0xf807,	0xf81a,	0xf818,
	0xf803,	0xf816,	0xf200,	0xf802,	0xf811,	0xf817,	0xf805,	0xf812,
	0xf819,	0xf814,	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,
	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,	0xf80f,
	0xf815,	0xf200,	0xf809,	0xf810,	0xf201,	0xf80c,	0xf80a,	0xf200,
	0xf80b,	0xf200,	0xf200,	0xf200,	0xf200,	0xf80e,	0xf80d,	0xf200,
	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,	0xf200,	0xf702,	0xf703,
	0xf700,	0xf207,	0xf701,	0xf601,	0xf602,	0xf600,	0xf603,	0xf200,
	0xf200,	0xf310,	0xf200,	0xf30c,	0xf200,	0xf30a,	0xf200,	0xf208,
	0xf200,	0xf200,	0xf200,	0xf30d,	0xf30e,	0xf200,	0xf30b,	0xf200,
	0xf200,	0xf200,	0xf300,	0xf301,	0xf302,	0xf303,	0xf304,	0xf305,
	0xf306,	0xf307,	0xf200,	0xf308,	0xf309,	0xf200,	0xf200,	0xf200,
	0xf504,	0xf505,	0xf506,	0xf502,	0xf507,	0xf508,	0xf200,	0xf50a,
	0xf200,	0xf10c,	0xf200,	0xf200,	0xf200,	0xf509,	0xf200,	0xf50b,
	0xf200,	0xf11d,	0xf115,	0xf114,	0xf118,	0xf116,	0xf503,	0xf117,
	0xf501,	0xf119,	0xf500,	0xf700,	0xf701,	0xf702,	0xf200,	0xf200,
};


static void kbd_repeat(unsigned long);
static struct timer_list repeat_timer = { function: kbd_repeat };
static int last_keycode;

static void mackeyb_probe(void);

static void keyboard_input(unsigned char *, int, struct pt_regs *, int);
static void input_keycode(int, int);
static void leds_done(struct adb_request *);
static void mac_put_queue(int);

static void buttons_input(unsigned char *, int, struct pt_regs *, int);

static void init_trackpad(int id);
static void init_trackball(int id);
static void init_turbomouse(int id);
static void init_microspeed(int id);
static void init_ms_a3(int id);

#ifdef CONFIG_ADBMOUSE
/* XXX: Hook for mouse driver */
void (*adb_mouse_interrupt_hook)(unsigned char *, int);
int adb_emulate_buttons = 0;
int adb_button2_keycode = 0x7d;	/* right control key */
int adb_button3_keycode = 0x7c; /* right option key */
#endif

extern struct kbd_struct kbd_table[];
extern wait_queue_head_t keypress_wait;

extern void handle_scancode(unsigned char, int);

static struct adb_ids keyboard_ids;
static struct adb_ids mouse_ids;
static struct adb_ids buttons_ids;

/* Kind of mouse  */
#define ADBMOUSE_STANDARD_100	0	/* Standard 100cpi mouse (handler 1) */
#define ADBMOUSE_STANDARD_200	1	/* Standard 200cpi mouse (handler 2) */
#define ADBMOUSE_EXTENDED	2	/* Apple Extended mouse (handler 4) */
#define ADBMOUSE_TRACKBALL	3	/* TrackBall (handler 4) */
#define ADBMOUSE_TRACKPAD       4	/* Apple's PowerBook trackpad (handler 4) */
#define ADBMOUSE_TURBOMOUSE5    5	/* Turbomouse 5 (previously req. mousehack) */
#define ADBMOUSE_MICROSPEED	6	/* Microspeed mouse (&trackball ?), MacPoint */
#define ADBMOUSE_TRACKBALLPRO	7	/* Trackball Pro (special buttons) */
#define ADBMOUSE_MS_A3		8	/* Mouse systems A3 trackball (handler 3) */
#define ADBMOUSE_MACALLY2	9	/* MacAlly 2-button mouse */

static int adb_mouse_kinds[16];

int mackbd_setkeycode(unsigned int scancode, unsigned int keycode)
{
	return -EINVAL;
}

int mackbd_getkeycode(unsigned int scancode)
{
	return -EINVAL;
}

int mackbd_translate(unsigned char keycode, unsigned char *keycodep,
		     char raw_mode)
{
	if (!raw_mode) {
		/*
		 * Convert R-shift/control/option to L version.
		 */
		switch (keycode) {
		case 0x7b: keycode = 0x38; break; /* R-shift */
		case 0x7c: keycode = 0x3a; break; /* R-option */
		case 0x7d: keycode = 0x36; break; /* R-control */
		}
	}
	*keycodep = keycode;
	return 1;
}

int mackbd_unexpected_up(unsigned char keycode)
{
	return 0x80;
}

static void
keyboard_input(unsigned char *data, int nb, struct pt_regs *regs, int apoll)
{
	/* first check this is from register 0 */
	if (nb != 3 || (data[0] & 3) != KEYB_KEYREG)
		return;		/* ignore it */
	kbd_pt_regs = regs;
	input_keycode(data[1], 0);
	if (!(data[2] == 0xff || (data[2] == 0x7f && data[1] == 0x7f)))
		input_keycode(data[2], 0);
}

static void
input_keycode(int keycode, int repeat)
{
	struct kbd_struct *kbd;
	int up_flag;

 	kbd = kbd_table + fg_console;
	up_flag = (keycode & 0x80);
	keycode &= 0x7f;

	/* on the powerbook 3400, the power key gives code 0x7e */
	if (keycode == 0x7e)
		keycode = 0x7f;
	/* remap the "Fn" key of the PowerBook G3 Series to 0x48
	   to avoid conflict with button emulation */
	if (keycode == 0x3f)
		keycode = 0x48;

	if (!repeat)
		del_timer(&repeat_timer);

#ifdef CONFIG_ADBMOUSE
	/*