mirror of https://gitee.com/openkylin/linux.git
157 lines
3.9 KiB
C
157 lines
3.9 KiB
C
// 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 <marek.vasut@gmail.com>");
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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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