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152 lines
3.8 KiB
152 lines
3.8 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (c) 2000 Justin Cormack |
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*/ |
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/* |
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* Newton keyboard driver for Linux |
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*/ |
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/* |
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*/ |
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#include <linux/slab.h> |
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#include <linux/module.h> |
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#include <linux/input.h> |
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#include <linux/serio.h> |
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#define DRIVER_DESC "Newton keyboard driver" |
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MODULE_AUTHOR("Justin Cormack <[email protected]>"); |
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MODULE_DESCRIPTION(DRIVER_DESC); |
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MODULE_LICENSE("GPL"); |
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#define NKBD_KEY 0x7f |
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#define NKBD_PRESS 0x80 |
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static unsigned char nkbd_keycode[128] = { |
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KEY_A, KEY_S, KEY_D, KEY_F, KEY_H, KEY_G, KEY_Z, KEY_X, |
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KEY_C, KEY_V, 0, KEY_B, KEY_Q, KEY_W, KEY_E, KEY_R, |
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KEY_Y, KEY_T, KEY_1, KEY_2, KEY_3, KEY_4, KEY_6, KEY_5, |
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KEY_EQUAL, KEY_9, KEY_7, KEY_MINUS, KEY_8, KEY_0, KEY_RIGHTBRACE, KEY_O, |
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KEY_U, KEY_LEFTBRACE, KEY_I, KEY_P, KEY_ENTER, KEY_L, KEY_J, KEY_APOSTROPHE, |
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KEY_K, KEY_SEMICOLON, KEY_BACKSLASH, KEY_COMMA, KEY_SLASH, KEY_N, KEY_M, KEY_DOT, |
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KEY_TAB, KEY_SPACE, KEY_GRAVE, KEY_DELETE, 0, 0, 0, KEY_LEFTMETA, |
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KEY_LEFTSHIFT, KEY_CAPSLOCK, KEY_LEFTALT, KEY_LEFTCTRL, KEY_RIGHTSHIFT, 0, 0, 0, |
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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KEY_LEFT, KEY_RIGHT, KEY_DOWN, KEY_UP, 0 |
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}; |
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struct nkbd { |
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unsigned char keycode[128]; |
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struct input_dev *dev; |
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struct serio *serio; |
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char phys[32]; |
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}; |
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static irqreturn_t nkbd_interrupt(struct serio *serio, |
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unsigned char data, unsigned int flags) |
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{ |
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struct nkbd *nkbd = serio_get_drvdata(serio); |
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/* invalid scan codes are probably the init sequence, so we ignore them */ |
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if (nkbd->keycode[data & NKBD_KEY]) { |
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input_report_key(nkbd->dev, nkbd->keycode[data & NKBD_KEY], data & NKBD_PRESS); |
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input_sync(nkbd->dev); |
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} |
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else if (data == 0xe7) /* end of init sequence */ |
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printk(KERN_INFO "input: %s on %s\n", nkbd->dev->name, serio->phys); |
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return IRQ_HANDLED; |
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} |
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static int nkbd_connect(struct serio *serio, struct serio_driver *drv) |
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{ |
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struct nkbd *nkbd; |
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struct input_dev *input_dev; |
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int err = -ENOMEM; |
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int i; |
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nkbd = kzalloc(sizeof(struct nkbd), GFP_KERNEL); |
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input_dev = input_allocate_device(); |
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if (!nkbd || !input_dev) |
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goto fail1; |
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nkbd->serio = serio; |
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nkbd->dev = input_dev; |
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snprintf(nkbd->phys, sizeof(nkbd->phys), "%s/input0", serio->phys); |
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memcpy(nkbd->keycode, nkbd_keycode, sizeof(nkbd->keycode)); |
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input_dev->name = "Newton Keyboard"; |
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input_dev->phys = nkbd->phys; |
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input_dev->id.bustype = BUS_RS232; |
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input_dev->id.vendor = SERIO_NEWTON; |
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input_dev->id.product = 0x0001; |
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input_dev->id.version = 0x0100; |
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input_dev->dev.parent = &serio->dev; |
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input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); |
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input_dev->keycode = nkbd->keycode; |
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input_dev->keycodesize = sizeof(unsigned char); |
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input_dev->keycodemax = ARRAY_SIZE(nkbd_keycode); |
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for (i = 0; i < 128; i++) |
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set_bit(nkbd->keycode[i], input_dev->keybit); |
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clear_bit(0, input_dev->keybit); |
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serio_set_drvdata(serio, nkbd); |
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err = serio_open(serio, drv); |
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if (err) |
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goto fail2; |
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err = input_register_device(nkbd->dev); |
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if (err) |
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goto fail3; |
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return 0; |
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fail3: serio_close(serio); |
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fail2: serio_set_drvdata(serio, NULL); |
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fail1: input_free_device(input_dev); |
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kfree(nkbd); |
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return err; |
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} |
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static void nkbd_disconnect(struct serio *serio) |
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{ |
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struct nkbd *nkbd = serio_get_drvdata(serio); |
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serio_close(serio); |
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serio_set_drvdata(serio, NULL); |
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input_unregister_device(nkbd->dev); |
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kfree(nkbd); |
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} |
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static const struct serio_device_id nkbd_serio_ids[] = { |
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{ |
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.type = SERIO_RS232, |
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.proto = SERIO_NEWTON, |
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.id = SERIO_ANY, |
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.extra = SERIO_ANY, |
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}, |
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{ 0 } |
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}; |
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MODULE_DEVICE_TABLE(serio, nkbd_serio_ids); |
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static struct serio_driver nkbd_drv = { |
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.driver = { |
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.name = "newtonkbd", |
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}, |
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.description = DRIVER_DESC, |
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.id_table = nkbd_serio_ids, |
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.interrupt = nkbd_interrupt, |
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.connect = nkbd_connect, |
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.disconnect = nkbd_disconnect, |
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}; |
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module_serio_driver(nkbd_drv);
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