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156 lines
3.9 KiB
156 lines
3.9 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Stowaway keyboard driver for Linux |
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*/ |
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/* |
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* Copyright (c) 2006 Marek Vasut |
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* |
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* Based on Newton keyboard driver for Linux |
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* by Justin Cormack |
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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 "Stowaway keyboard driver" |
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MODULE_AUTHOR("Marek Vasut <[email protected]>"); |
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MODULE_DESCRIPTION(DRIVER_DESC); |
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MODULE_LICENSE("GPL"); |
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#define SKBD_KEY_MASK 0x7f |
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#define SKBD_RELEASE 0x80 |
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static unsigned char skbd_keycode[128] = { |
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KEY_1, KEY_2, KEY_3, KEY_Z, KEY_4, KEY_5, KEY_6, KEY_7, |
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0, KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_GRAVE, |
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KEY_X, KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_SPACE, |
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KEY_CAPSLOCK, KEY_TAB, KEY_LEFTCTRL, 0, 0, 0, 0, 0, |
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0, 0, 0, KEY_LEFTALT, 0, 0, 0, 0, |
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0, 0, 0, 0, KEY_C, KEY_V, KEY_B, KEY_N, |
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KEY_MINUS, KEY_EQUAL, KEY_BACKSPACE, KEY_HOME, KEY_8, KEY_9, KEY_0, KEY_ESC, |
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KEY_LEFTBRACE, KEY_RIGHTBRACE, KEY_BACKSLASH, KEY_END, KEY_U, KEY_I, KEY_O, KEY_P, |
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KEY_APOSTROPHE, KEY_ENTER, KEY_PAGEUP,0, KEY_J, KEY_K, KEY_L, KEY_SEMICOLON, |
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KEY_SLASH, KEY_UP, KEY_PAGEDOWN, 0,KEY_M, KEY_COMMA, KEY_DOT, KEY_INSERT, |
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KEY_DELETE, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, |
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KEY_LEFTSHIFT, KEY_RIGHTSHIFT, 0, 0, 0, 0, 0, |
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0, 0, 0, 0, 0, 0, 0, 0, |
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0, 0, 0, 0, 0, 0, 0, 0, |
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0, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7, |
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KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_F12, 0, 0, 0 |
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}; |
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struct skbd { |
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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 skbd_interrupt(struct serio *serio, unsigned char data, |
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unsigned int flags) |
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{ |
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struct skbd *skbd = serio_get_drvdata(serio); |
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struct input_dev *dev = skbd->dev; |
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if (skbd->keycode[data & SKBD_KEY_MASK]) { |
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input_report_key(dev, skbd->keycode[data & SKBD_KEY_MASK], |
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!(data & SKBD_RELEASE)); |
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input_sync(dev); |
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} |
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return IRQ_HANDLED; |
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} |
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static int skbd_connect(struct serio *serio, struct serio_driver *drv) |
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{ |
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struct skbd *skbd; |
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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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skbd = kzalloc(sizeof(struct skbd), GFP_KERNEL); |
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input_dev = input_allocate_device(); |
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if (!skbd || !input_dev) |
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goto fail1; |
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skbd->serio = serio; |
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skbd->dev = input_dev; |
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snprintf(skbd->phys, sizeof(skbd->phys), "%s/input0", serio->phys); |
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memcpy(skbd->keycode, skbd_keycode, sizeof(skbd->keycode)); |
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input_dev->name = "Stowaway Keyboard"; |
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input_dev->phys = skbd->phys; |
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input_dev->id.bustype = BUS_RS232; |
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input_dev->id.vendor = SERIO_STOWAWAY; |
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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 = skbd->keycode; |
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input_dev->keycodesize = sizeof(unsigned char); |
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input_dev->keycodemax = ARRAY_SIZE(skbd_keycode); |
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for (i = 0; i < ARRAY_SIZE(skbd_keycode); i++) |
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set_bit(skbd_keycode[i], input_dev->keybit); |
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clear_bit(0, input_dev->keybit); |
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serio_set_drvdata(serio, skbd); |
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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(skbd->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(skbd); |
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return err; |
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} |
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static void skbd_disconnect(struct serio *serio) |
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{ |
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struct skbd *skbd = 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(skbd->dev); |
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kfree(skbd); |
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} |
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static const struct serio_device_id skbd_serio_ids[] = { |
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{ |
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.type = SERIO_RS232, |
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.proto = SERIO_STOWAWAY, |
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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, skbd_serio_ids); |
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static struct serio_driver skbd_drv = { |
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.driver = { |
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.name = "stowaway", |
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}, |
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.description = DRIVER_DESC, |
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.id_table = skbd_serio_ids, |
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.interrupt = skbd_interrupt, |
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.connect = skbd_connect, |
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.disconnect = skbd_disconnect, |
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}; |
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module_serio_driver(skbd_drv);
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