linux-imx

// 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 */