cregit-Linux how code gets into the kernel

Release 4.11 drivers/input/keyboard/amikbd.c

/*
 *  Copyright (c) 2000-2001 Vojtech Pavlik
 *
 *  Based on the work of:
 *      Hamish Macdonald
 */

/*
 * Amiga keyboard driver for Linux/m68k
 */

/*
 * 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 <vojtech@ucw.cz>, or by paper mail:
 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/keyboard.h>
#include <linux/platform_device.h>

#include <asm/amigaints.h>
#include <asm/amigahw.h>
#include <asm/irq.h>

MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION("Amiga keyboard driver");
MODULE_LICENSE("GPL");

#ifdef CONFIG_HW_CONSOLE

static unsigned char amikbd_keycode[0x78] __initdata = {
	[0]	 = KEY_GRAVE,
	[1]	 = KEY_1,
	[2]	 = KEY_2,
	[3]	 = KEY_3,
	[4]	 = KEY_4,
	[5]	 = KEY_5,
	[6]	 = KEY_6,
	[7]	 = KEY_7,
	[8]	 = KEY_8,
	[9]	 = KEY_9,
	[10]	 = KEY_0,
	[11]	 = KEY_MINUS,
	[12]	 = KEY_EQUAL,
	[13]	 = KEY_BACKSLASH,
	[15]	 = KEY_KP0,
	[16]	 = KEY_Q,
	[17]	 = KEY_W,
	[18]	 = KEY_E,
	[19]	 = KEY_R,
	[20]	 = KEY_T,
	[21]	 = KEY_Y,
	[22]	 = KEY_U,
	[23]	 = KEY_I,
	[24]	 = KEY_O,
	[25]	 = KEY_P,
	[26]	 = KEY_LEFTBRACE,
	[27]	 = KEY_RIGHTBRACE,
	[29]	 = KEY_KP1,
	[30]	 = KEY_KP2,
	[31]	 = KEY_KP3,
	[32]	 = KEY_A,
	[33]	 = KEY_S,
	[34]	 = KEY_D,
	[35]	 = KEY_F,
	[36]	 = KEY_G,
	[37]	 = KEY_H,
	[38]	 = KEY_J,
	[39]	 = KEY_K,
	[40]	 = KEY_L,
	[41]	 = KEY_SEMICOLON,
	[42]	 = KEY_APOSTROPHE,
	[43]	 = KEY_BACKSLASH,
	[45]	 = KEY_KP4,
	[46]	 = KEY_KP5,
	[47]	 = KEY_KP6,
	[48]	 = KEY_102ND,
	[49]	 = KEY_Z,
	[50]	 = KEY_X,
	[51]	 = KEY_C,
	[52]	 = KEY_V,
	[53]	 = KEY_B,
	[54]	 = KEY_N,
	[55]	 = KEY_M,
	[56]	 = KEY_COMMA,
	[57]	 = KEY_DOT,
	[58]	 = KEY_SLASH,
	[60]	 = KEY_KPDOT,
	[61]	 = KEY_KP7,
	[62]	 = KEY_KP8,
	[63]	 = KEY_KP9,
	[64]	 = KEY_SPACE,
	[65]	 = KEY_BACKSPACE,
	[66]	 = KEY_TAB,
	[67]	 = KEY_KPENTER,
	[68]	 = KEY_ENTER,
	[69]	 = KEY_ESC,
	[70]	 = KEY_DELETE,
	[74]	 = KEY_KPMINUS,
	[76]	 = KEY_UP,
	[77]	 = KEY_DOWN,
	[78]	 = KEY_RIGHT,
	[79]	 = KEY_LEFT,
	[80]	 = KEY_F1,
	[81]	 = KEY_F2,
	[82]	 = KEY_F3,
	[83]	 = KEY_F4,
	[84]	 = KEY_F5,
	[85]	 = KEY_F6,
	[86]	 = KEY_F7,
	[87]	 = KEY_F8,
	[88]	 = KEY_F9,
	[89]	 = KEY_F10,
	[90]	 = KEY_KPLEFTPAREN,
	[91]	 = KEY_KPRIGHTPAREN,
	[92]	 = KEY_KPSLASH,
	[93]	 = KEY_KPASTERISK,
	[94]	 = KEY_KPPLUS,
	[95]	 = KEY_HELP,
	[96]	 = KEY_LEFTSHIFT,
	[97]	 = KEY_RIGHTSHIFT,
	[98]	 = KEY_CAPSLOCK,
	[99]	 = KEY_LEFTCTRL,
	[100]	 = KEY_LEFTALT,
	[101]	 = KEY_RIGHTALT,
	[102]	 = KEY_LEFTMETA,
	[103]	 = KEY_RIGHTMETA
};


static void __init amikbd_init_console_keymaps(void) { /* We can spare 512 bytes on stack for temp_map in init path. */ unsigned short temp_map[NR_KEYS]; int i, j; for (i = 0; i < MAX_NR_KEYMAPS; i++) { if (!key_maps[i]) continue; memset(temp_map, 0, sizeof(temp_map)); for (j = 0; j < 0x78; j++) { if (!amikbd_keycode[j]) continue; temp_map[j] = key_maps[i][amikbd_keycode[j]]; } for (j = 0; j < NR_KEYS; j++) { if (!temp_map[j]) temp_map[j] = 0xf200; } memcpy(key_maps[i], temp_map, sizeof(temp_map)); } }

Contributors

PersonTokensPropCommitsCommitProp
Geert Uytterhoeven143100.00%2100.00%
Total143100.00%2100.00%

#else /* !CONFIG_HW_CONSOLE */
static inline void amikbd_init_console_keymaps(void) {}

Contributors

PersonTokensPropCommitsCommitProp
Geert Uytterhoeven8100.00%1100.00%
Total8100.00%1100.00%

#endif /* !CONFIG_HW_CONSOLE */ static const char *amikbd_messages[8] = { [0] = KERN_ALERT "amikbd: Ctrl-Amiga-Amiga reset warning!!\n", [1] = KERN_WARNING "amikbd: keyboard lost sync\n", [2] = KERN_WARNING "amikbd: keyboard buffer overflow\n", [3] = KERN_WARNING "amikbd: keyboard controller failure\n", [4] = KERN_ERR "amikbd: keyboard selftest failure\n", [5] = KERN_INFO "amikbd: initiate power-up key stream\n", [6] = KERN_INFO "amikbd: terminate power-up key stream\n", [7] = KERN_WARNING "amikbd: keyboard interrupt\n" };
static irqreturn_t amikbd_interrupt(int irq, void *data) { struct input_dev *dev = data; unsigned char scancode, down; scancode = ~ciaa.sdr; /* get and invert scancode (keyboard is active low) */ ciaa.cra |= 0x40; /* switch SP pin to output for handshake */ udelay(85); /* wait until 85 us have expired */ ciaa.cra &= ~0x40; /* switch CIA serial port to input mode */ down = !(scancode & 1); /* lowest bit is release bit */ scancode >>= 1; if (scancode < 0x78) { /* scancodes < 0x78 are keys */ if (scancode == 98) { /* CapsLock is a toggle switch key on Amiga */ input_report_key(dev, scancode, 1); input_report_key(dev, scancode, 0); } else { input_report_key(dev, scancode, down); } input_sync(dev); } else /* scancodes >= 0x78 are error codes */ printk(amikbd_messages[scancode - 0x78]); return IRQ_HANDLED; }

Contributors

PersonTokensPropCommitsCommitProp
Vojtech Pavlik11181.02%225.00%
Geert Uytterhoeven2417.52%450.00%
Roman Zippel10.73%112.50%
Dmitry Torokhov10.73%112.50%
Total137100.00%8100.00%


static int __init amikbd_probe(struct platform_device *pdev) { struct input_dev *dev; int i, err; dev = input_allocate_device(); if (!dev) { dev_err(&pdev->dev, "Not enough memory for input device\n"); return -ENOMEM; } dev->name = pdev->name; dev->phys = "amikbd/input0"; dev->id.bustype = BUS_AMIGA; dev->id.vendor = 0x0001; dev->id.product = 0x0001; dev->id.version = 0x0100; dev->dev.parent = &pdev->dev; dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); for (i = 0; i < 0x78; i++) set_bit(i, dev->keybit); amikbd_init_console_keymaps(); ciaa.cra &= ~0x41; /* serial data in, turn off TA */ err = request_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt, 0, "amikbd", dev); if (err) goto fail2; err = input_register_device(dev); if (err) goto fail3; platform_set_drvdata(pdev, dev); return 0; fail3: free_irq(IRQ_AMIGA_CIAA_SP, dev); fail2: input_free_device(dev); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov8136.82%220.00%
Geert Uytterhoeven6228.18%220.00%
Vojtech Pavlik5424.55%220.00%
Roman Zippel198.64%110.00%
Jiri Slaby20.91%110.00%
Al Viro20.91%220.00%
Total220100.00%10100.00%


static int __exit amikbd_remove(struct platform_device *pdev) { struct input_dev *dev = platform_get_drvdata(pdev); free_irq(IRQ_AMIGA_CIAA_SP, dev); input_unregister_device(dev); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Geert Uytterhoeven2259.46%133.33%
Vojtech Pavlik1129.73%133.33%
Dmitry Torokhov410.81%133.33%
Total37100.00%3100.00%

static struct platform_driver amikbd_driver = { .remove = __exit_p(amikbd_remove), .driver = { .name = "amiga-keyboard", }, }; module_platform_driver_probe(amikbd_driver, amikbd_probe); MODULE_ALIAS("platform:amiga-keyboard");

Overall Contributors

PersonTokensPropCommitsCommitProp
Geert Uytterhoeven78460.63%942.86%
Vojtech Pavlik38729.93%314.29%
Dmitry Torokhov927.12%314.29%
Roman Zippel241.86%14.76%
Al Viro20.15%29.52%
Jiri Slaby20.15%14.76%
Adrian Bunk10.08%14.76%
Sachin Kamat10.08%14.76%
Total1293100.00%21100.00%
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