cregit-Linux how code gets into the kernel

Release 4.11 drivers/input/keyboard/newtonkbd.c

/*
 *  Copyright (c) 2000 Justin Cormack
 */

/*
 * Newton keyboard driver for Linux
 */

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * Should you need to contact me, the author, you can do so either by
 * e-mail - mail your message to <j.cormack@doc.ic.ac.uk>, or by paper mail:
 * Justin Cormack, 68 Dartmouth Park Road, London NW5 1SN, UK.
 */

#include <linux/slab.h>
#include <linux/module.h>
#include <linux/input.h>
#include <linux/serio.h>


#define DRIVER_DESC	"Newton keyboard driver"

MODULE_AUTHOR("Justin Cormack <j.cormack@doc.ic.ac.uk>");

MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");


#define NKBD_KEY	0x7f

#define NKBD_PRESS	0x80


static unsigned char nkbd_keycode[128] = {
	KEY_A, KEY_S, KEY_D, KEY_F, KEY_H, KEY_G, KEY_Z, KEY_X,
	KEY_C, KEY_V, 0, KEY_B, KEY_Q, KEY_W, KEY_E, KEY_R,
	KEY_Y, KEY_T, KEY_1, KEY_2, KEY_3, KEY_4, KEY_6, KEY_5,
	KEY_EQUAL, KEY_9, KEY_7, KEY_MINUS, KEY_8, KEY_0, KEY_RIGHTBRACE, KEY_O,
	KEY_U, KEY_LEFTBRACE, KEY_I, KEY_P, KEY_ENTER, KEY_L, KEY_J, KEY_APOSTROPHE,
	KEY_K, KEY_SEMICOLON, KEY_BACKSLASH, KEY_COMMA, KEY_SLASH, KEY_N, KEY_M, KEY_DOT,
	KEY_TAB, KEY_SPACE, KEY_GRAVE, KEY_DELETE, 0, 0, 0, KEY_LEFTMETA,
	KEY_LEFTSHIFT, KEY_CAPSLOCK, KEY_LEFTALT, KEY_LEFTCTRL, KEY_RIGHTSHIFT, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	KEY_LEFT, KEY_RIGHT, KEY_DOWN, KEY_UP, 0
};


struct nkbd {
	
unsigned char keycode[128];
	
struct input_dev *dev;
	
struct serio *serio;
	
char phys[32];
};


static irqreturn_t nkbd_interrupt(struct serio *serio, unsigned char data, unsigned int flags) { struct nkbd *nkbd = serio_get_drvdata(serio); /* invalid scan codes are probably the init sequence, so we ignore them */ if (nkbd->keycode[data & NKBD_KEY]) { input_report_key(nkbd->dev, nkbd->keycode[data & NKBD_KEY], data & NKBD_PRESS); input_sync(nkbd->dev); } else if (data == 0xe7) /* end of init sequence */ printk(KERN_INFO "input: %s on %s\n", nkbd->dev->name, serio->phys); return IRQ_HANDLED; }

Contributors

PersonTokensPropCommitsCommitProp
Vojtech Pavlik8486.60%233.33%
Dmitry Torokhov88.25%233.33%
Andrew Morton44.12%116.67%
Adrian Bunk11.03%116.67%
Total97100.00%6100.00%


static int nkbd_connect(struct serio *serio, struct serio_driver *drv) { struct nkbd *nkbd; struct input_dev *input_dev; int err = -ENOMEM; int i; nkbd = kzalloc(sizeof(struct nkbd), GFP_KERNEL); input_dev = input_allocate_device(); if (!nkbd || !input_dev) goto fail1; nkbd->serio = serio; nkbd->dev = input_dev; snprintf(nkbd->phys, sizeof(nkbd->phys), "%s/input0", serio->phys); memcpy(nkbd->keycode, nkbd_keycode, sizeof(nkbd->keycode)); input_dev->name = "Newton Keyboard"; input_dev->phys = nkbd->phys; input_dev->id.bustype = BUS_RS232; input_dev->id.vendor = SERIO_NEWTON; input_dev->id.product = 0x0001; input_dev->id.version = 0x0100; input_dev->dev.parent = &serio->dev; input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); input_dev->keycode = nkbd->keycode; input_dev->keycodesize = sizeof(unsigned char); input_dev->keycodemax = ARRAY_SIZE(nkbd_keycode); for (i = 0; i < 128; i++) set_bit(nkbd->keycode[i], input_dev->keybit); clear_bit(0, input_dev->keybit); serio_set_drvdata(serio, nkbd); err = serio_open(serio, drv); if (err) goto fail2; err = input_register_device(nkbd->dev); if (err) goto fail3; return 0; fail3: serio_close(serio); fail2: serio_set_drvdata(serio, NULL); fail1: input_free_device(input_dev); kfree(nkbd); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov19059.01%763.64%
Vojtech Pavlik12940.06%218.18%
Jiri Slaby20.62%19.09%
Adrian Bunk10.31%19.09%
Total322100.00%11100.00%


static void nkbd_disconnect(struct serio *serio) { struct nkbd *nkbd = serio_get_drvdata(serio); serio_close(serio); serio_set_drvdata(serio, NULL); input_unregister_device(nkbd->dev); kfree(nkbd); }

Contributors

PersonTokensPropCommitsCommitProp
Vojtech Pavlik2760.00%125.00%
Dmitry Torokhov1737.78%250.00%
Adrian Bunk12.22%125.00%
Total45100.00%4100.00%

static struct serio_device_id nkbd_serio_ids[] = { { .type = SERIO_RS232, .proto = SERIO_NEWTON, .id = SERIO_ANY, .extra = SERIO_ANY, }, { 0 } }; MODULE_DEVICE_TABLE(serio, nkbd_serio_ids); static struct serio_driver nkbd_drv = { .driver = { .name = "newtonkbd", }, .description = DRIVER_DESC, .id_table = nkbd_serio_ids, .interrupt = nkbd_interrupt, .connect = nkbd_connect, .disconnect = nkbd_disconnect, }; module_serio_driver(nkbd_drv);

Overall Contributors

PersonTokensPropCommitsCommitProp
Vojtech Pavlik58265.54%421.05%
Dmitry Torokhov28532.09%1052.63%
Andrew Morton131.46%210.53%
Adrian Bunk40.45%15.26%
Axel Lin20.23%15.26%
Jiri Slaby20.23%15.26%
Total888100.00%19100.00%
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