drivers/input/keyboard/amikbd.c - linux - Git at Google

 /*
  *  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
  */

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

 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;
 }

 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;
 }

 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");
	/*
	* 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
	*/

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

	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;
	}

	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;
	}

	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");