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linux/drivers/macintosh/adbhid.c
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00

1200 lines
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/*
* drivers/macintosh/adbhid.c
*
* ADB HID driver for Power Macintosh computers.
*
* Adapted from drivers/macintosh/mac_keyb.c by Franz Sirl.
* drivers/macintosh/mac_keyb.c was Copyright (C) 1996 Paul Mackerras
* with considerable contributions from Ben Herrenschmidt and others.
*
* Copyright (C) 2000 Franz Sirl.
*
* 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 <aidan@kublai.com>
* - MacAlly 2-buttons mouse (needs testing) <pochini@denise.shiny.it>
*
* To do:
*
* Improve Kensington support.
* Split mouse/kbd
* Move to syfs
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/notifier.h>
#include <linux/input.h>
#include <linux/adb.h>
#include <linux/cuda.h>
#include <linux/pmu.h>
#include <asm/machdep.h>
#ifdef CONFIG_PPC_PMAC
#include <asm/backlight.h>
#include <asm/pmac_feature.h>
#endif
MODULE_AUTHOR("Franz Sirl <Franz.Sirl-kernel@lauterbach.com>");
#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 adbhid_adb_notifier = {
.notifier_call = adb_message_handler,
};
/* Some special keys */
#define ADB_KEY_DEL 0x33
#define ADB_KEY_CMD 0x37
#define ADB_KEY_CAPSLOCK 0x39
#define ADB_KEY_FN 0x3f
#define ADB_KEY_FWDEL 0x75
#define ADB_KEY_POWER_OLD 0x7e
#define ADB_KEY_POWER 0x7f
u8 adb_to_linux_keycodes[128] = {
/* 0x00 */ KEY_A, /* 30 */
/* 0x01 */ KEY_S, /* 31 */
/* 0x02 */ KEY_D, /* 32 */
/* 0x03 */ KEY_F, /* 33 */
/* 0x04 */ KEY_H, /* 35 */
/* 0x05 */ KEY_G, /* 34 */
/* 0x06 */ KEY_Z, /* 44 */
/* 0x07 */ KEY_X, /* 45 */
/* 0x08 */ KEY_C, /* 46 */
/* 0x09 */ KEY_V, /* 47 */
/* 0x0a */ KEY_102ND, /* 86 */
/* 0x0b */ KEY_B, /* 48 */
/* 0x0c */ KEY_Q, /* 16 */
/* 0x0d */ KEY_W, /* 17 */
/* 0x0e */ KEY_E, /* 18 */
/* 0x0f */ KEY_R, /* 19 */
/* 0x10 */ KEY_Y, /* 21 */
/* 0x11 */ KEY_T, /* 20 */
/* 0x12 */ KEY_1, /* 2 */
/* 0x13 */ KEY_2, /* 3 */
/* 0x14 */ KEY_3, /* 4 */
/* 0x15 */ KEY_4, /* 5 */
/* 0x16 */ KEY_6, /* 7 */
/* 0x17 */ KEY_5, /* 6 */
/* 0x18 */ KEY_EQUAL, /* 13 */
/* 0x19 */ KEY_9, /* 10 */
/* 0x1a */ KEY_7, /* 8 */
/* 0x1b */ KEY_MINUS, /* 12 */
/* 0x1c */ KEY_8, /* 9 */
/* 0x1d */ KEY_0, /* 11 */
/* 0x1e */ KEY_RIGHTBRACE, /* 27 */
/* 0x1f */ KEY_O, /* 24 */
/* 0x20 */ KEY_U, /* 22 */
/* 0x21 */ KEY_LEFTBRACE, /* 26 */
/* 0x22 */ KEY_I, /* 23 */
/* 0x23 */ KEY_P, /* 25 */
/* 0x24 */ KEY_ENTER, /* 28 */
/* 0x25 */ KEY_L, /* 38 */
/* 0x26 */ KEY_J, /* 36 */
/* 0x27 */ KEY_APOSTROPHE, /* 40 */
/* 0x28 */ KEY_K, /* 37 */
/* 0x29 */ KEY_SEMICOLON, /* 39 */
/* 0x2a */ KEY_BACKSLASH, /* 43 */
/* 0x2b */ KEY_COMMA, /* 51 */
/* 0x2c */ KEY_SLASH, /* 53 */
/* 0x2d */ KEY_N, /* 49 */
/* 0x2e */ KEY_M, /* 50 */
/* 0x2f */ KEY_DOT, /* 52 */
/* 0x30 */ KEY_TAB, /* 15 */
/* 0x31 */ KEY_SPACE, /* 57 */
/* 0x32 */ KEY_GRAVE, /* 41 */
/* 0x33 */ KEY_BACKSPACE, /* 14 */
/* 0x34 */ KEY_KPENTER, /* 96 */
/* 0x35 */ KEY_ESC, /* 1 */
/* 0x36 */ KEY_LEFTCTRL, /* 29 */
/* 0x37 */ KEY_LEFTMETA, /* 125 */
/* 0x38 */ KEY_LEFTSHIFT, /* 42 */
/* 0x39 */ KEY_CAPSLOCK, /* 58 */
/* 0x3a */ KEY_LEFTALT, /* 56 */
/* 0x3b */ KEY_LEFT, /* 105 */
/* 0x3c */ KEY_RIGHT, /* 106 */
/* 0x3d */ KEY_DOWN, /* 108 */
/* 0x3e */ KEY_UP, /* 103 */
/* 0x3f */ 0,
/* 0x40 */ 0,
/* 0x41 */ KEY_KPDOT, /* 83 */
/* 0x42 */ 0,
/* 0x43 */ KEY_KPASTERISK, /* 55 */
/* 0x44 */ 0,
/* 0x45 */ KEY_KPPLUS, /* 78 */
/* 0x46 */ 0,
/* 0x47 */ KEY_NUMLOCK, /* 69 */
/* 0x48 */ 0,
/* 0x49 */ 0,
/* 0x4a */ 0,
/* 0x4b */ KEY_KPSLASH, /* 98 */
/* 0x4c */ KEY_KPENTER, /* 96 */
/* 0x4d */ 0,
/* 0x4e */ KEY_KPMINUS, /* 74 */
/* 0x4f */ 0,
/* 0x50 */ 0,
/* 0x51 */ KEY_KPEQUAL, /* 117 */
/* 0x52 */ KEY_KP0, /* 82 */
/* 0x53 */ KEY_KP1, /* 79 */
/* 0x54 */ KEY_KP2, /* 80 */
/* 0x55 */ KEY_KP3, /* 81 */
/* 0x56 */ KEY_KP4, /* 75 */
/* 0x57 */ KEY_KP5, /* 76 */
/* 0x58 */ KEY_KP6, /* 77 */
/* 0x59 */ KEY_KP7, /* 71 */
/* 0x5a */ 0,
/* 0x5b */ KEY_KP8, /* 72 */
/* 0x5c */ KEY_KP9, /* 73 */
/* 0x5d */ KEY_YEN, /* 124 */
/* 0x5e */ KEY_RO, /* 89 */
/* 0x5f */ KEY_KPCOMMA, /* 121 */
/* 0x60 */ KEY_F5, /* 63 */
/* 0x61 */ KEY_F6, /* 64 */
/* 0x62 */ KEY_F7, /* 65 */
/* 0x63 */ KEY_F3, /* 61 */
/* 0x64 */ KEY_F8, /* 66 */
/* 0x65 */ KEY_F9, /* 67 */
/* 0x66 */ KEY_HANJA, /* 123 */
/* 0x67 */ KEY_F11, /* 87 */
/* 0x68 */ KEY_HANGEUL, /* 122 */
/* 0x69 */ KEY_SYSRQ, /* 99 */
/* 0x6a */ 0,
/* 0x6b */ KEY_SCROLLLOCK, /* 70 */
/* 0x6c */ 0,
/* 0x6d */ KEY_F10, /* 68 */
/* 0x6e */ KEY_COMPOSE, /* 127 */
/* 0x6f */ KEY_F12, /* 88 */
/* 0x70 */ 0,
/* 0x71 */ KEY_PAUSE, /* 119 */
/* 0x72 */ KEY_INSERT, /* 110 */
/* 0x73 */ KEY_HOME, /* 102 */
/* 0x74 */ KEY_PAGEUP, /* 104 */
/* 0x75 */ KEY_DELETE, /* 111 */
/* 0x76 */ KEY_F4, /* 62 */
/* 0x77 */ KEY_END, /* 107 */
/* 0x78 */ KEY_F2, /* 60 */
/* 0x79 */ KEY_PAGEDOWN, /* 109 */
/* 0x7a */ KEY_F1, /* 59 */
/* 0x7b */ KEY_RIGHTSHIFT, /* 54 */
/* 0x7c */ KEY_RIGHTALT, /* 100 */
/* 0x7d */ KEY_RIGHTCTRL, /* 97 */
/* 0x7e */ KEY_RIGHTMETA, /* 126 */
/* 0x7f */ KEY_POWER, /* 116 */
};
struct adbhid {
struct input_dev *input;
int id;
int default_id;
int original_handler_id;
int current_handler_id;
int mouse_kind;
unsigned char *keycode;
char name[64];
char phys[32];
int flags;
};
#define FLAG_FN_KEY_PRESSED 0x00000001
#define FLAG_POWER_FROM_FN 0x00000002
#define FLAG_EMU_FWDEL_DOWN 0x00000004
static struct adbhid *adbhid[16];
static void adbhid_probe(void);
static void adbhid_input_keycode(int, int, 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);
static struct adb_ids keyboard_ids;
static struct adb_ids mouse_ids;
static struct adb_ids buttons_ids;
/* Kind of keyboard, see Apple technote 1152 */
#define ADB_KEYBOARD_UNKNOWN 0
#define ADB_KEYBOARD_ANSI 0x0100
#define ADB_KEYBOARD_ISO 0x0200
#define ADB_KEYBOARD_JIS 0x0300
/* 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 void
adbhid_keyboard_input(unsigned char *data, int nb, int apoll)
{
int id = (data[0] >> 4) & 0x0f;
if (!adbhid[id]) {
printk(KERN_ERR "ADB HID on ID %d not yet registered, packet %#02x, %#02x, %#02x, %#02x\n",
id, data[0], data[1], data[2], data[3]);
return;
}
/* first check this is from register 0 */
if (nb != 3 || (data[0] & 3) != KEYB_KEYREG)
return; /* ignore it */
adbhid_input_keycode(id, data[1], 0);
if (!(data[2] == 0xff || (data[2] == 0x7f && data[1] == 0x7f)))
adbhid_input_keycode(id, data[2], 0);
}
static void
adbhid_input_keycode(int id, int keycode, int repeat)
{
struct adbhid *ahid = adbhid[id];
int up_flag;
up_flag = (keycode & 0x80);
keycode &= 0x7f;
switch (keycode) {
case ADB_KEY_CAPSLOCK: /* Generate down/up events for CapsLock everytime. */
input_report_key(ahid->input, KEY_CAPSLOCK, 1);
input_report_key(ahid->input, KEY_CAPSLOCK, 0);
input_sync(ahid->input);
return;
#ifdef CONFIG_PPC_PMAC
case ADB_KEY_POWER_OLD: /* Power key on PBook 3400 needs remapping */
switch(pmac_call_feature(PMAC_FTR_GET_MB_INFO,
NULL, PMAC_MB_INFO_MODEL, 0)) {
case PMAC_TYPE_COMET:
case PMAC_TYPE_HOOPER:
case PMAC_TYPE_KANGA:
keycode = ADB_KEY_POWER;
}
break;
case ADB_KEY_POWER:
/* Fn + Command will produce a bogus "power" keycode */
if (ahid->flags & FLAG_FN_KEY_PRESSED) {
keycode = ADB_KEY_CMD;
if (up_flag)
ahid->flags &= ~FLAG_POWER_FROM_FN;
else
ahid->flags |= FLAG_POWER_FROM_FN;
} else if (ahid->flags & FLAG_POWER_FROM_FN) {
keycode = ADB_KEY_CMD;
ahid->flags &= ~FLAG_POWER_FROM_FN;
}
break;
case ADB_KEY_FN:
/* Keep track of the Fn key state */
if (up_flag) {
ahid->flags &= ~FLAG_FN_KEY_PRESSED;
/* Emulate Fn+delete = forward delete */
if (ahid->flags & FLAG_EMU_FWDEL_DOWN) {
ahid->flags &= ~FLAG_EMU_FWDEL_DOWN;
keycode = ADB_KEY_FWDEL;
break;
}
} else
ahid->flags |= FLAG_FN_KEY_PRESSED;
/* Swallow the key press */
return;
case ADB_KEY_DEL:
/* Emulate Fn+delete = forward delete */
if (ahid->flags & FLAG_FN_KEY_PRESSED) {
keycode = ADB_KEY_FWDEL;
if (up_flag)
ahid->flags &= ~FLAG_EMU_FWDEL_DOWN;
else
ahid->flags |= FLAG_EMU_FWDEL_DOWN;
}
break;
#endif /* CONFIG_PPC_PMAC */
}
if (adbhid[id]->keycode[keycode]) {
input_report_key(adbhid[id]->input,
adbhid[id]->keycode[keycode], !up_flag);
input_sync(adbhid[id]->input);
} else
printk(KERN_INFO "Unhandled ADB key (scancode %#02x) %s.\n", keycode,
up_flag ? "released" : "pressed");
}
static void
adbhid_mouse_input(unsigned char *data, int nb, int autopoll)
{
int id = (data[0] >> 4) & 0x0f;
if (!adbhid[id]) {
printk(KERN_ERR "ADB HID on ID %d not yet registered\n", id);
return;
}
/*
Handler 1 -- 100cpi original Apple mouse protocol.
Handler 2 -- 200cpi original Apple mouse protocol.
For Apple's standard one-button mouse protocol the data array will
contain the following values:
BITS COMMENTS
data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
data[1] = bxxx xxxx First button and x-axis motion.
data[2] = byyy yyyy Second button and y-axis motion.
Handler 4 -- Apple Extended mouse protocol.
For Apple's 3-button mouse protocol the data array will contain the
following values:
BITS COMMENTS
data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
data[1] = bxxx xxxx Left button and x-axis motion.
data[2] = byyy yyyy Second button and y-axis motion.
data[3] = byyy bxxx Third button and fourth button. Y is additional
high bits of y-axis motion. XY is additional
high bits of x-axis motion.
MacAlly 2-button mouse protocol.
For MacAlly 2-button mouse protocol the data array will contain the
following values:
BITS COMMENTS
data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
data[1] = bxxx xxxx Left button and x-axis motion.
data[2] = byyy yyyy Right button and y-axis motion.
data[3] = ???? ???? unknown
data[4] = ???? ???? unknown
*/
/* If it's a trackpad, we alias the second button to the first.
NOTE: Apple sends an ADB flush command to the trackpad when
the first (the real) button is released. We could do
this here using async flush requests.
*/
switch (adbhid[id]->mouse_kind)
{
case ADBMOUSE_TRACKPAD:
data[1] = (data[1] & 0x7f) | ((data[1] & data[2]) & 0x80);
data[2] = data[2] | 0x80;
break;
case ADBMOUSE_MICROSPEED:
data[1] = (data[1] & 0x7f) | ((data[3] & 0x01) << 7);
data[2] = (data[2] & 0x7f) | ((data[3] & 0x02) << 6);
data[3] = (data[3] & 0x77) | ((data[3] & 0x04) << 5)
| (data[3] & 0x08);
break;
case ADBMOUSE_TRACKBALLPRO:
data[1] = (data[1] & 0x7f) | (((data[3] & 0x04) << 5)
& ((data[3] & 0x08) << 4));
data[2] = (data[2] & 0x7f) | ((data[3] & 0x01) << 7);
data[3] = (data[3] & 0x77) | ((data[3] & 0x02) << 6);
break;
case ADBMOUSE_MS_A3:
data[1] = (data[1] & 0x7f) | ((data[3] & 0x01) << 7);
data[2] = (data[2] & 0x7f) | ((data[3] & 0x02) << 6);
data[3] = ((data[3] & 0x04) << 5);
break;
case ADBMOUSE_MACALLY2:
data[3] = (data[2] & 0x80) ? 0x80 : 0x00;
data[2] |= 0x80; /* Right button is mapped as button 3 */
nb=4;
break;
}
input_report_key(adbhid[id]->input, BTN_LEFT, !((data[1] >> 7) & 1));
input_report_key(adbhid[id]->input, BTN_MIDDLE, !((data[2] >> 7) & 1));
if (nb >= 4 && adbhid[id]->mouse_kind != ADBMOUSE_TRACKPAD)
input_report_key(adbhid[id]->input, BTN_RIGHT, !((data[3] >> 7) & 1));
input_report_rel(adbhid[id]->input, REL_X,
((data[2]&0x7f) < 64 ? (data[2]&0x7f) : (data[2]&0x7f)-128 ));
input_report_rel(adbhid[id]->input, REL_Y,
((data[1]&0x7f) < 64 ? (data[1]&0x7f) : (data[1]&0x7f)-128 ));
input_sync(adbhid[id]->input);
}
static void
adbhid_buttons_input(unsigned char *data, int nb, int autopoll)
{
int id = (data[0] >> 4) & 0x0f;
if (!adbhid[id]) {
printk(KERN_ERR "ADB HID on ID %d not yet registered\n", id);
return;
}
switch (adbhid[id]->original_handler_id) {
default:
case 0x02: /* Adjustable keyboard button device */
{
int down = (data[1] == (data[1] & 0xf));
switch (data[1] & 0x0f) {
case 0x0: /* microphone */
input_report_key(adbhid[id]->input, KEY_SOUND, down);
break;
case 0x1: /* mute */
input_report_key(adbhid[id]->input, KEY_MUTE, down);
break;
case 0x2: /* volume decrease */
input_report_key(adbhid[id]->input, KEY_VOLUMEDOWN, down);
break;
case 0x3: /* volume increase */
input_report_key(adbhid[id]->input, KEY_VOLUMEUP, down);
break;
default:
printk(KERN_INFO "Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
data[0], data[1], data[2], data[3]);
break;
}
}
break;
case 0x1f: /* Powerbook button device */
{
int down = (data[1] == (data[1] & 0xf));
/*
* XXX: Where is the contrast control for the passive?
* -- Cort
*/
switch (data[1] & 0x0f) {
case 0x8: /* mute */
input_report_key(adbhid[id]->input, KEY_MUTE, down);
break;
case 0x7: /* volume decrease */
input_report_key(adbhid[id]->input, KEY_VOLUMEDOWN, down);
break;
case 0x6: /* volume increase */
input_report_key(adbhid[id]->input, KEY_VOLUMEUP, down);
break;
case 0xb: /* eject */
input_report_key(adbhid[id]->input, KEY_EJECTCD, down);
break;
case 0xa: /* brightness decrease */
#ifdef CONFIG_PMAC_BACKLIGHT
if (down)
pmac_backlight_key_down();
#endif
input_report_key(adbhid[id]->input, KEY_BRIGHTNESSDOWN, down);
break;
case 0x9: /* brightness increase */
#ifdef CONFIG_PMAC_BACKLIGHT
if (down)
pmac_backlight_key_up();
#endif
input_report_key(adbhid[id]->input, KEY_BRIGHTNESSUP, down);
break;
case 0xc: /* videomode switch */
input_report_key(adbhid[id]->input, KEY_SWITCHVIDEOMODE, down);
break;
case 0xd: /* keyboard illumination toggle */
input_report_key(adbhid[id]->input, KEY_KBDILLUMTOGGLE, down);
break;
case 0xe: /* keyboard illumination decrease */
input_report_key(adbhid[id]->input, KEY_KBDILLUMDOWN, down);
break;
case 0xf:
switch (data[1]) {
case 0x8f:
case 0x0f:
/* keyboard illumination increase */
input_report_key(adbhid[id]->input, KEY_KBDILLUMUP, down);
break;
case 0x7f:
case 0xff:
/* keypad overlay toogle */
break;
default:
printk(KERN_INFO "Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
data[0], data[1], data[2], data[3]);
break;
}
break;
default:
printk(KERN_INFO "Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
data[0], data[1], data[2], data[3]);
break;
}
}
break;
}
input_sync(adbhid[id]->input);
}
static struct adb_request led_request;
static int leds_pending[16];
static int leds_req_pending;
static int pending_devs[16];
static int pending_led_start=0;
static int pending_led_end=0;
static DEFINE_SPINLOCK(leds_lock);
static void leds_done(struct adb_request *req)
{
int leds = 0, device = 0, pending = 0;
unsigned long flags;
spin_lock_irqsave(&leds_lock, flags);
if (pending_led_start != pending_led_end) {
device = pending_devs[pending_led_start];
leds = leds_pending[device] & 0xff;
leds_pending[device] = 0;
pending_led_start++;
pending_led_start = (pending_led_start < 16) ? pending_led_start : 0;
pending = leds_req_pending;
} else
leds_req_pending = 0;
spin_unlock_irqrestore(&leds_lock, flags);
if (pending)
adb_request(&led_request, leds_done, 0, 3,
ADB_WRITEREG(device, KEYB_LEDREG), 0xff, ~leds);
}
static void real_leds(unsigned char leds, int device)
{
unsigned long flags;
spin_lock_irqsave(&leds_lock, flags);
if (!leds_req_pending) {
leds_req_pending = 1;
spin_unlock_irqrestore(&leds_lock, flags);
adb_request(&led_request, leds_done, 0, 3,
ADB_WRITEREG(device, KEYB_LEDREG), 0xff, ~leds);
return;
} else {
if (!(leds_pending[device] & 0x100)) {
pending_devs[pending_led_end] = device;
pending_led_end++;
pending_led_end = (pending_led_end < 16) ? pending_led_end : 0;
}
leds_pending[device] = leds | 0x100;
}
spin_unlock_irqrestore(&leds_lock, flags);
}
/*
* Event callback from the input module. Events that change the state of
* the hardware are processed here.
*/
static int adbhid_kbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
{
struct adbhid *adbhid = dev->private;
unsigned char leds;
switch (type) {
case EV_LED:
leds = (test_bit(LED_SCROLLL, dev->led) ? 4 : 0)
| (test_bit(LED_NUML, dev->led) ? 1 : 0)
| (test_bit(LED_CAPSL, dev->led) ? 2 : 0);
real_leds(leds, adbhid->id);
return 0;
}
return -1;
}
static int
adb_message_handler(struct notifier_block *this, unsigned long code, void *x)
{
switch (code) {
case ADB_MSG_PRE_RESET:
case ADB_MSG_POWERDOWN:
/* Stop the repeat timer. Autopoll is already off at this point */
{
int i;
for (i = 1; i < 16; i++) {
if (adbhid[i])
del_timer_sync(&adbhid[i]->input->timer);
}
}
/* Stop pending led requests */
while(leds_req_pending)
adb_poll();
break;
case ADB_MSG_POST_RESET:
adbhid_probe();
break;
}
return NOTIFY_DONE;
}
static int
adbhid_input_register(int id, int default_id, int original_handler_id,
int current_handler_id, int mouse_kind)
{
struct adbhid *hid;
struct input_dev *input_dev;
int err;
int i;
if (adbhid[id]) {
printk(KERN_ERR "Trying to reregister ADB HID on ID %d\n", id);
return -EEXIST;
}
adbhid[id] = hid = kzalloc(sizeof(struct adbhid), GFP_KERNEL);
input_dev = input_allocate_device();
if (!hid || !input_dev) {
err = -ENOMEM;
goto fail;
}
sprintf(hid->phys, "adb%d:%d.%02x/input", id, default_id, original_handler_id);
hid->input = input_dev;
hid->id = default_id;
hid->original_handler_id = original_handler_id;
hid->current_handler_id = current_handler_id;
hid->mouse_kind = mouse_kind;
hid->flags = 0;
input_dev->private = hid;
input_dev->name = hid->name;
input_dev->phys = hid->phys;
input_dev->id.bustype = BUS_ADB;
input_dev->id.vendor = 0x0001;
input_dev->id.product = (id << 12) | (default_id << 8) | original_handler_id;
input_dev->id.version = 0x0100;
switch (default_id) {
case ADB_KEYBOARD:
hid->keycode = kmalloc(sizeof(adb_to_linux_keycodes), GFP_KERNEL);
if (!hid->keycode) {
err = -ENOMEM;
goto fail;
}
sprintf(hid->name, "ADB keyboard");
memcpy(hid->keycode, adb_to_linux_keycodes, sizeof(adb_to_linux_keycodes));
printk(KERN_INFO "Detected ADB keyboard, type ");
switch (original_handler_id) {
default:
printk("<unknown>.\n");
input_dev->id.version = ADB_KEYBOARD_UNKNOWN;
break;
case 0x01: case 0x02: case 0x03: case 0x06: case 0x08:
case 0x0C: case 0x10: case 0x18: case 0x1B: case 0x1C:
case 0xC0: case 0xC3: case 0xC6:
printk("ANSI.\n");
input_dev->id.version = ADB_KEYBOARD_ANSI;
break;
case 0x04: case 0x05: case 0x07: case 0x09: case 0x0D:
case 0x11: case 0x14: case 0x19: case 0x1D: case 0xC1:
case 0xC4: case 0xC7:
printk("ISO, swapping keys.\n");
input_dev->id.version = ADB_KEYBOARD_ISO;
i = hid->keycode[10];
hid->keycode[10] = hid->keycode[50];
hid->keycode[50] = i;
break;
case 0x12: case 0x15: case 0x16: case 0x17: case 0x1A:
case 0x1E: case 0xC2: case 0xC5: case 0xC8: case 0xC9:
printk("JIS.\n");
input_dev->id.version = ADB_KEYBOARD_JIS;
break;
}
for (i = 0; i < 128; i++)
if (hid->keycode[i])
set_bit(hid->keycode[i], input_dev->keybit);
input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP);
input_dev->ledbit[0] = BIT(LED_SCROLLL) | BIT(LED_CAPSL) | BIT(LED_NUML);
input_dev->event = adbhid_kbd_event;
input_dev->keycodemax = 127;
input_dev->keycodesize = 1;
break;
case ADB_MOUSE:
sprintf(hid->name, "ADB mouse");
input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
input_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
break;
case ADB_MISC:
switch (original_handler_id) {
case 0x02: /* Adjustable keyboard button device */
sprintf(hid->name, "ADB adjustable keyboard buttons");
input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
set_bit(KEY_SOUND, input_dev->keybit);
set_bit(KEY_MUTE, input_dev->keybit);
set_bit(KEY_VOLUMEUP, input_dev->keybit);
set_bit(KEY_VOLUMEDOWN, input_dev->keybit);
break;
case 0x1f: /* Powerbook button device */
sprintf(hid->name, "ADB Powerbook buttons");
input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
set_bit(KEY_MUTE, input_dev->keybit);
set_bit(KEY_VOLUMEUP, input_dev->keybit);
set_bit(KEY_VOLUMEDOWN, input_dev->keybit);
set_bit(KEY_BRIGHTNESSUP, input_dev->keybit);
set_bit(KEY_BRIGHTNESSDOWN, input_dev->keybit);
set_bit(KEY_EJECTCD, input_dev->keybit);
set_bit(KEY_SWITCHVIDEOMODE, input_dev->keybit);
set_bit(KEY_KBDILLUMTOGGLE, input_dev->keybit);
set_bit(KEY_KBDILLUMDOWN, input_dev->keybit);
set_bit(KEY_KBDILLUMUP, input_dev->keybit);
break;
}
if (hid->name[0])
break;
/* else fall through */
default:
printk(KERN_INFO "Trying to register unknown ADB device to input layer.\n");
err = -ENODEV;
goto fail;
}
input_dev->keycode = hid->keycode;
input_register_device(input_dev);
if (default_id == ADB_KEYBOARD) {
/* HACK WARNING!! This should go away as soon there is an utility
* to control that for event devices.
*/
input_dev->rep[REP_DELAY] = 500; /* input layer default: 250 */
input_dev->rep[REP_PERIOD] = 66; /* input layer default: 33 */
}
return 0;
fail: input_free_device(input_dev);
kfree(hid);
adbhid[id] = NULL;
return err;
}
static void adbhid_input_unregister(int id)
{
input_unregister_device(adbhid[id]->input);
kfree(adbhid[id]->keycode);
kfree(adbhid[id]);
adbhid[id] = NULL;
}
static u16
adbhid_input_reregister(int id, int default_id, int org_handler_id,
int cur_handler_id, int mk)
{
if (adbhid[id]) {
if (adbhid[id]->input->id.product !=
((id << 12)|(default_id << 8)|org_handler_id)) {
adbhid_input_unregister(id);
adbhid_input_register(id, default_id, org_handler_id,
cur_handler_id, mk);
}
} else
adbhid_input_register(id, default_id, org_handler_id,
cur_handler_id, mk);
return 1<<id;
}
static void
adbhid_input_devcleanup(u16 exist)
{
int i;
for(i=1; i<16; i++)
if (adbhid[i] && !(exist&(1<<i)))
adbhid_input_unregister(i);
}
static void
adbhid_probe(void)
{
struct adb_request req;
int i, default_id, org_handler_id, cur_handler_id;
u16 reg = 0;
adb_register(ADB_MOUSE, 0, &mouse_ids, adbhid_mouse_input);
adb_register(ADB_KEYBOARD, 0, &keyboard_ids, adbhid_keyboard_input);
adb_register(ADB_MISC, 0, &buttons_ids, adbhid_buttons_input);
for (i = 0; i < keyboard_ids.nids; i++) {
int id = keyboard_ids.id[i];
adb_get_infos(id, &default_id, &org_handler_id);
/* turn off all leds */
adb_request(&req, NULL, ADBREQ_SYNC, 3,
ADB_WRITEREG(id, KEYB_LEDREG), 0xff, 0xff);
/* Enable full feature set of the keyboard
->get it to send separate codes for left and right shift,
control, option keys */
#if 0 /* handler 5 doesn't send separate codes for R modifiers */
if (adb_try_handler_change(id, 5))
printk("ADB keyboard at %d, handler set to 5\n", id);
else
#endif
if (adb_try_handler_change(id, 3))
printk("ADB keyboard at %d, handler set to 3\n", id);
else
printk("ADB keyboard at %d, handler 1\n", id);
adb_get_infos(id, &default_id, &cur_handler_id);
reg |= adbhid_input_reregister(id, default_id, org_handler_id,
cur_handler_id, 0);
}
for (i = 0; i < buttons_ids.nids; i++) {
int id = buttons_ids.id[i];
adb_get_infos(id, &default_id, &org_handler_id);
reg |= adbhid_input_reregister(id, default_id, org_handler_id,
org_handler_id, 0);
}
/* Try to switch all mice to handler 4, or 2 for three-button
mode and full resolution. */
for (i = 0; i < mouse_ids.nids; i++) {
int id = mouse_ids.id[i];
int mouse_kind;
adb_get_infos(id, &default_id, &org_handler_id);
if (adb_try_handler_change(id, 4)) {
printk("ADB mouse at %d, handler set to 4", id);
mouse_kind = ADBMOUSE_EXTENDED;
}
else if (adb_try_handler_change(id, 0x2F)) {
printk("ADB mouse at %d, handler set to 0x2F", id);
mouse_kind = ADBMOUSE_MICROSPEED;
}
else if (adb_try_handler_change(id, 0x42)) {
printk("ADB mouse at %d, handler set to 0x42", id);
mouse_kind = ADBMOUSE_TRACKBALLPRO;
}
else if (adb_try_handler_change(id, 0x66)) {
printk("ADB mouse at %d, handler set to 0x66", id);
mouse_kind = ADBMOUSE_MICROSPEED;
}
else if (adb_try_handler_change(id, 0x5F)) {
printk("ADB mouse at %d, handler set to 0x5F", id);
mouse_kind = ADBMOUSE_MICROSPEED;
}
else if (adb_try_handler_change(id, 3)) {
printk("ADB mouse at %d, handler set to 3", id);
mouse_kind = ADBMOUSE_MS_A3;
}
else if (adb_try_handler_change(id, 2)) {
printk("ADB mouse at %d, handler set to 2", id);
mouse_kind = ADBMOUSE_STANDARD_200;
}
else {
printk("ADB mouse at %d, handler 1", id);
mouse_kind = ADBMOUSE_STANDARD_100;
}
if ((mouse_kind == ADBMOUSE_TRACKBALLPRO)
|| (mouse_kind == ADBMOUSE_MICROSPEED)) {
init_microspeed(id);
} else if (mouse_kind == ADBMOUSE_MS_A3) {
init_ms_a3(id);
} else if (mouse_kind == ADBMOUSE_EXTENDED) {
/*
* Register 1 is usually used for device
* identification. Here, we try to identify
* a known device and call the appropriate
* init function.
*/
adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
ADB_READREG(id, 1));
if ((req.reply_len) &&
(req.reply[1] == 0x9a) && ((req.reply[2] == 0x21)
|| (req.reply[2] == 0x20))) {
mouse_kind = ADBMOUSE_TRACKBALL;
init_trackball(id);
}
else if ((req.reply_len >= 4) &&
(req.reply[1] == 0x74) && (req.reply[2] == 0x70) &&
(req.reply[3] == 0x61) && (req.reply[4] == 0x64)) {
mouse_kind = ADBMOUSE_TRACKPAD;
init_trackpad(id);
}
else if ((req.reply_len >= 4) &&
(req.reply[1] == 0x4b) && (req.reply[2] == 0x4d) &&
(req.reply[3] == 0x4c) && (req.reply[4] == 0x31)) {
mouse_kind = ADBMOUSE_TURBOMOUSE5;
init_turbomouse(id);
}
else if ((req.reply_len == 9) &&
(req.reply[1] == 0x4b) && (req.reply[2] == 0x4f) &&
(req.reply[3] == 0x49) && (req.reply[4] == 0x54)) {
if (adb_try_handler_change(id, 0x42)) {
printk("\nADB MacAlly 2-button mouse at %d, handler set to 0x42", id);
mouse_kind = ADBMOUSE_MACALLY2;
}
}
}
printk("\n");
adb_get_infos(id, &default_id, &cur_handler_id);
reg |= adbhid_input_reregister(id, default_id, org_handler_id,
cur_handler_id, mouse_kind);
}
adbhid_input_devcleanup(reg);
}
static void
init_trackpad(int id)
{
struct adb_request req;
unsigned char r1_buffer[8];
printk(" (trackpad)");
adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
ADB_READREG(id,1));
if (req.reply_len < 8)
printk("bad length for reg. 1\n");
else
{
memcpy(r1_buffer, &req.reply[1], 8);
adb_request(&req, NULL, ADBREQ_SYNC, 9,
ADB_WRITEREG(id,1),
r1_buffer[0],
r1_buffer[1],
r1_buffer[2],
r1_buffer[3],
r1_buffer[4],
r1_buffer[5],
0x0d,
r1_buffer[7]);
adb_request(&req, NULL, ADBREQ_SYNC, 9,
ADB_WRITEREG(id,2),
0x99,
0x94,
0x19,
0xff,
0xb2,
0x8a,
0x1b,
0x50);
adb_request(&req, NULL, ADBREQ_SYNC, 9,
ADB_WRITEREG(id,1),
r1_buffer[0],
r1_buffer[1],
r1_buffer[2],
r1_buffer[3],
r1_buffer[4],
r1_buffer[5],
0x03, /*r1_buffer[6],*/
r1_buffer[7]);
/* Without this flush, the trackpad may be locked up */
adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
}
}
static void
init_trackball(int id)
{
struct adb_request req;
printk(" (trackman/mouseman)");
adb_request(&req, NULL, ADBREQ_SYNC, 3,
ADB_WRITEREG(id,1), 00,0x81);
adb_request(&req, NULL, ADBREQ_SYNC, 3,
ADB_WRITEREG(id,1), 01,0x81);
adb_request(&req, NULL, ADBREQ_SYNC, 3,
ADB_WRITEREG(id,1), 02,0x81);
adb_request(&req, NULL, ADBREQ_SYNC, 3,
ADB_WRITEREG(id,1), 03,0x38);
adb_request(&req, NULL, ADBREQ_SYNC, 3,
ADB_WRITEREG(id,1), 00,0x81);
adb_request(&req, NULL, ADBREQ_SYNC, 3,
ADB_WRITEREG(id,1), 01,0x81);
adb_request(&req, NULL, ADBREQ_SYNC, 3,
ADB_WRITEREG(id,1), 02,0x81);
adb_request(&req, NULL, ADBREQ_SYNC, 3,
ADB_WRITEREG(id,1), 03,0x38);
}
static void
init_turbomouse(int id)
{
struct adb_request req;
printk(" (TurboMouse 5)");
adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(3));
adb_request(&req, NULL, ADBREQ_SYNC, 9,
ADB_WRITEREG(3,2),
0xe7,
0x8c,
0,
0,
0,
0xff,
0xff,
0x94);
adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(3));
adb_request(&req, NULL, ADBREQ_SYNC, 9,
ADB_WRITEREG(3,2),
0xa5,
0x14,
0,
0,
0x69,
0xff,
0xff,
0x27);
}
static void
init_microspeed(int id)
{
struct adb_request req;
printk(" (Microspeed/MacPoint or compatible)");
adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
/* This will initialize mice using the Microspeed, MacPoint and
other compatible firmware. Bit 12 enables extended protocol.
Register 1 Listen (4 Bytes)
0 - 3 Button is mouse (set also for double clicking!!!)
4 - 7 Button is locking (affects change speed also)
8 - 11 Button changes speed
12 1 = Extended mouse mode, 0 = normal mouse mode
13 - 15 unused 0
16 - 23 normal speed
24 - 31 changed speed
Register 1 talk holds version and product identification information.
Register 1 Talk (4 Bytes):
0 - 7 Product code
8 - 23 undefined, reserved
24 - 31 Version number
Speed 0 is max. 1 to 255 set speed in increments of 1/256 of max.
*/
adb_request(&req, NULL, ADBREQ_SYNC, 5,
ADB_WRITEREG(id,1),
0x20, /* alt speed = 0x20 (rather slow) */
0x00, /* norm speed = 0x00 (fastest) */
0x10, /* extended protocol, no speed change */
0x07); /* all buttons enabled as mouse buttons, no locking */
adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
}
static void
init_ms_a3(int id)
{
struct adb_request req;
printk(" (Mouse Systems A3 Mouse, or compatible)");
adb_request(&req, NULL, ADBREQ_SYNC, 3,
ADB_WRITEREG(id, 0x2),
0x00,
0x07);
adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
}
static int __init adbhid_init(void)
{
#ifndef CONFIG_MAC
if (!machine_is(chrp) && !machine_is(powermac))
return 0;
#endif
led_request.complete = 1;
adbhid_probe();
blocking_notifier_chain_register(&adb_client_list,
&adbhid_adb_notifier);
return 0;
}
static void __exit adbhid_exit(void)
{
}
module_init(adbhid_init);
module_exit(adbhid_exit);
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