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linux/drivers/macintosh/adbhid.c
Yang Guang 6130ed79de macintosh/adb: Use swap() to make code cleaner 
Use the macro 'swap()' defined in 'include/linux/minmax.h' to avoid
opencoding it.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Yang Guang <yang.guang5@zte.com.cn>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211104011456.1027830-1-yang.guang5@zte.com.cn
2022-05-04 19:37:45 +10:00

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// SPDX-License-Identifier: GPL-2.0
/*
* 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>");
static int restore_capslock_events;
module_param(restore_capslock_events, int, 0644);
MODULE_PARM_DESC(restore_capslock_events,
"Produce keypress events for capslock on both keyup and keydown.");
#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
static const u16 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 */ KEY_FN, /* 0x1d0 */
/* 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;
u16 *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
#define FLAG_CAPSLOCK_TRANSLATE 0x00000008
#define FLAG_CAPSLOCK_DOWN 0x00000010
#define FLAG_CAPSLOCK_IGNORE_NEXT 0x00000020
#define FLAG_POWER_KEY_PRESSED 0x00000040
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]) {
pr_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 scancode, int repeat)
{
struct adbhid *ahid = adbhid[id];
int keycode, up_flag, key;
keycode = scancode & 0x7f;
up_flag = scancode & 0x80;
if (restore_capslock_events) {
if (keycode == ADB_KEY_CAPSLOCK && !up_flag) {
/* Key pressed, turning on the CapsLock LED.
* The next 0xff will be interpreted as a release. */
if (ahid->flags & FLAG_CAPSLOCK_IGNORE_NEXT) {
/* Throw away this key event if it happens
* just after resume. */
ahid->flags &= ~FLAG_CAPSLOCK_IGNORE_NEXT;
return;
} else {
ahid->flags |= FLAG_CAPSLOCK_TRANSLATE
| FLAG_CAPSLOCK_DOWN;
}
} else if (scancode == 0xff &&
!(ahid->flags & FLAG_POWER_KEY_PRESSED)) {
/* Scancode 0xff usually signifies that the capslock
* key was either pressed or released, or that the
* power button was released. */
if (ahid->flags & FLAG_CAPSLOCK_TRANSLATE) {
keycode = ADB_KEY_CAPSLOCK;
if (ahid->flags & FLAG_CAPSLOCK_DOWN) {
/* Key released */
up_flag = 1;
ahid->flags &= ~FLAG_CAPSLOCK_DOWN;
} else {
/* Key pressed */
up_flag = 0;
ahid->flags &= ~FLAG_CAPSLOCK_TRANSLATE;
}
} else {
pr_info("Spurious caps lock event (scancode 0xff).\n");
}
}
}
switch (keycode) {
case ADB_KEY_CAPSLOCK:
if (!restore_capslock_events) {
/* Generate down/up events for CapsLock every time. */
input_report_key(ahid->input, KEY_CAPSLOCK, 1);
input_sync(ahid->input);
input_report_key(ahid->input, KEY_CAPSLOCK, 0);
input_sync(ahid->input);
return;
}
break;
#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:
/* Keep track of the power key state */
if (up_flag)
ahid->flags &= ~FLAG_POWER_KEY_PRESSED;
else
ahid->flags |= FLAG_POWER_KEY_PRESSED;
/* 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;
break;
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 */
}
key = adbhid[id]->keycode[keycode];
if (key) {
input_report_key(adbhid[id]->input, key, !up_flag);
input_sync(adbhid[id]->input);
} else
pr_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]) {
pr_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]) {
pr_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:
pr_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:
pr_info("Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
data[0], data[1], data[2], data[3]);
break;
}
break;
default:
pr_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;
static int pending_led_end;
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 = input_get_drvdata(dev);
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 void
adbhid_kbd_capslock_remember(void)
{
struct adbhid *ahid;
int i;
for (i = 1; i < 16; i++) {
ahid = adbhid[i];
if (ahid && ahid->id == ADB_KEYBOARD)
if (ahid->flags & FLAG_CAPSLOCK_TRANSLATE)
ahid->flags |= FLAG_CAPSLOCK_IGNORE_NEXT;
}
}
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();
/* After resume, and if the capslock LED is on, the PMU will
* send a "capslock down" key event. This confuses the
* restore_capslock_events logic. Remember if the capslock
* LED was on before suspend so the unwanted key event can
* be ignored after resume. */
if (restore_capslock_events)
adbhid_kbd_capslock_remember();
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;
char *keyboard_type;
if (adbhid[id]) {
pr_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_set_drvdata(input_dev, 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 = kmemdup(adb_to_linux_keycodes,
sizeof(adb_to_linux_keycodes), GFP_KERNEL);
if (!hid->keycode) {
err = -ENOMEM;
goto fail;
}
sprintf(hid->name, "ADB keyboard");
switch (original_handler_id) {
default:
keyboard_type = "<unknown>";
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:
keyboard_type = "ANSI";
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:
keyboard_type = "ISO, swapping keys";
input_dev->id.version = ADB_KEYBOARD_ISO;
swap(hid->keycode[10], hid->keycode[50]);
break;
case 0x12: case 0x15: case 0x16: case 0x17: case 0x1A:
case 0x1E: case 0xC2: case 0xC5: case 0xC8: case 0xC9:
keyboard_type = "JIS";
input_dev->id.version = ADB_KEYBOARD_JIS;
break;
}
pr_info("Detected ADB keyboard, type %s.\n", keyboard_type);
for (i = 0; i < 128; i++)
if (hid->keycode[i])
set_bit(hid->keycode[i], input_dev->keybit);
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_LED) |
BIT_MASK(EV_REP);
input_dev->ledbit[0] = BIT_MASK(LED_SCROLLL) |
BIT_MASK(LED_CAPSL) | BIT_MASK(LED_NUML);
input_dev->event = adbhid_kbd_event;
input_dev->keycodemax = KEY_FN;
input_dev->keycodesize = sizeof(hid->keycode[0]);
break;
case ADB_MOUSE:
sprintf(hid->name, "ADB mouse");
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(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_MASK(EV_KEY) |
BIT_MASK(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_MASK(EV_KEY) |
BIT_MASK(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;
fallthrough;
default:
pr_info("Trying to register unknown ADB device to input layer.\n");
err = -ENODEV;
goto fail;
}
input_dev->keycode = hid->keycode;
err = input_register_device(input_dev);
if (err)
goto fail;
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);
if (hid) {
kfree(hid->keycode);
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))
#endif
adb_try_handler_change(id, 3);
adb_get_infos(id, &default_id, &cur_handler_id);
printk(KERN_DEBUG "ADB keyboard at %d has handler 0x%X\n",
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;
char *desc = "standard";
adb_get_infos(id, &default_id, &org_handler_id);
if (adb_try_handler_change(id, 4)) {
mouse_kind = ADBMOUSE_EXTENDED;
}
else if (adb_try_handler_change(id, 0x2F)) {
mouse_kind = ADBMOUSE_MICROSPEED;
}
else if (adb_try_handler_change(id, 0x42)) {
mouse_kind = ADBMOUSE_TRACKBALLPRO;
}
else if (adb_try_handler_change(id, 0x66)) {
mouse_kind = ADBMOUSE_MICROSPEED;
}
else if (adb_try_handler_change(id, 0x5F)) {
mouse_kind = ADBMOUSE_MICROSPEED;
}
else if (adb_try_handler_change(id, 3)) {
mouse_kind = ADBMOUSE_MS_A3;
}
else if (adb_try_handler_change(id, 2)) {
mouse_kind = ADBMOUSE_STANDARD_200;
}
else {
mouse_kind = ADBMOUSE_STANDARD_100;
}
if ((mouse_kind == ADBMOUSE_TRACKBALLPRO)
|| (mouse_kind == ADBMOUSE_MICROSPEED)) {
desc = "Microspeed/MacPoint or compatible";
init_microspeed(id);
} else if (mouse_kind == ADBMOUSE_MS_A3) {
desc = "Mouse Systems A3 Mouse or compatible";
init_ms_a3(id);
} else if (mouse_kind == ADBMOUSE_EXTENDED) {
desc = "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;
desc = "trackman/mouseman";
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;
desc = "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;
desc = "TurboMouse 5";
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)) {
mouse_kind = ADBMOUSE_MACALLY2;
desc = "MacAlly 2-button";
}
}
}
adb_get_infos(id, &default_id, &cur_handler_id);
printk(KERN_DEBUG "ADB mouse (%s) at %d has handler 0x%X\n",
desc, 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];
adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
ADB_READREG(id,1));
if (req.reply_len < 8)
pr_err("%s: bad length for reg. 1\n", __func__);
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;
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;
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;
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;
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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