[linux-block.git] / drivers / input / keyboard / amikbd.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Copyright (c) 2000-2001 Vojtech Pavlik
 *
 *  Based on the work of:
 *	Hamish Macdonald
 */

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

/*
 */

#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");
Commit	Line	Data
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4	2	/*
1da177e4 LT	3	* Copyright (c) 2000-2001 Vojtech Pavlik
	4	*
	5	* Based on the work of:
	6	* Hamish Macdonald
	7	*/
	8
	9	/*
	10	* Amiga keyboard driver for Linux/m68k
	11	*/
	12
	13	/*
1da177e4 LT	14	*/
	15
	16	#include <linux/module.h>
	17	#include <linux/init.h>
	18	#include <linux/input.h>
	19	#include <linux/delay.h>
	20	#include <linux/interrupt.h>
5fa28ea4	21	#include <linux/keyboard.h>
5121c717	22	#include <linux/platform_device.h>
1da177e4 LT	23
	24	#include <asm/amigaints.h>
	25	#include <asm/amigahw.h>
	26	#include <asm/irq.h>
	27
	28	MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
	29	MODULE_DESCRIPTION("Amiga keyboard driver");
	30	MODULE_LICENSE("GPL");
	31
545e6253	32	#ifdef CONFIG_HW_CONSOLE
5fa28ea4	33	static unsigned char amikbd_keycode[0x78] __initdata = {
1da177e4 LT	34	[0] = KEY_GRAVE,
	35	[1] = KEY_1,
	36	[2] = KEY_2,
	37	[3] = KEY_3,
	38	[4] = KEY_4,
	39	[5] = KEY_5,
	40	[6] = KEY_6,
	41	[7] = KEY_7,
	42	[8] = KEY_8,
	43	[9] = KEY_9,
	44	[10] = KEY_0,
	45	[11] = KEY_MINUS,
	46	[12] = KEY_EQUAL,
	47	[13] = KEY_BACKSLASH,
	48	[15] = KEY_KP0,
	49	[16] = KEY_Q,
	50	[17] = KEY_W,
	51	[18] = KEY_E,
	52	[19] = KEY_R,
	53	[20] = KEY_T,
	54	[21] = KEY_Y,
	55	[22] = KEY_U,
	56	[23] = KEY_I,
	57	[24] = KEY_O,
	58	[25] = KEY_P,
	59	[26] = KEY_LEFTBRACE,
	60	[27] = KEY_RIGHTBRACE,
	61	[29] = KEY_KP1,
	62	[30] = KEY_KP2,
	63	[31] = KEY_KP3,
	64	[32] = KEY_A,
	65	[33] = KEY_S,
	66	[34] = KEY_D,
	67	[35] = KEY_F,
	68	[36] = KEY_G,
	69	[37] = KEY_H,
	70	[38] = KEY_J,
	71	[39] = KEY_K,
	72	[40] = KEY_L,
	73	[41] = KEY_SEMICOLON,
	74	[42] = KEY_APOSTROPHE,
	75	[43] = KEY_BACKSLASH,
	76	[45] = KEY_KP4,
	77	[46] = KEY_KP5,
	78	[47] = KEY_KP6,
	79	[48] = KEY_102ND,
	80	[49] = KEY_Z,
	81	[50] = KEY_X,
	82	[51] = KEY_C,
	83	[52] = KEY_V,
	84	[53] = KEY_B,
	85	[54] = KEY_N,
	86	[55] = KEY_M,
	87	[56] = KEY_COMMA,
	88	[57] = KEY_DOT,
	89	[58] = KEY_SLASH,
	90	[60] = KEY_KPDOT,
	91	[61] = KEY_KP7,
	92	[62] = KEY_KP8,
	93	[63] = KEY_KP9,
	94	[64] = KEY_SPACE,
	95	[65] = KEY_BACKSPACE,
	96	[66] = KEY_TAB,
	97	[67] = KEY_KPENTER,
98	[68] = KEY_ENTER,
99	[69] = KEY_ESC,
100	[70] = KEY_DELETE,
101	[74] = KEY_KPMINUS,
102	[76] = KEY_UP,
103	[77] = KEY_DOWN,
104	[78] = KEY_RIGHT,
105	[79] = KEY_LEFT,
106	[80] = KEY_F1,
107	[81] = KEY_F2,
108	[82] = KEY_F3,
109	[83] = KEY_F4,
110	[84] = KEY_F5,
111	[85] = KEY_F6,
112	[86] = KEY_F7,
113	[87] = KEY_F8,
114	[88] = KEY_F9,
115	[89] = KEY_F10,
116	[90] = KEY_KPLEFTPAREN,
117	[91] = KEY_KPRIGHTPAREN,
118	[92] = KEY_KPSLASH,
119	[93] = KEY_KPASTERISK,
120	[94] = KEY_KPPLUS,
121	[95] = KEY_HELP,
122	[96] = KEY_LEFTSHIFT,
123	[97] = KEY_RIGHTSHIFT,
124	[98] = KEY_CAPSLOCK,
125	[99] = KEY_LEFTCTRL,
126	[100] = KEY_LEFTALT,
127	[101] = KEY_RIGHTALT,
128	[102] = KEY_LEFTMETA,
129	[103] = KEY_RIGHTMETA
130	};
131
545e6253 GU	132	static void __init amikbd_init_console_keymaps(void)
545e6253 GU	133	{
e147af49 GU	134	/* We can spare 512 bytes on stack for temp_map in init path. */
e147af49 GU	135	unsigned short temp_map[NR_KEYS];
545e6253 GU	136	int i, j;
	137
	138	for (i = 0; i < MAX_NR_KEYMAPS; i++) {
545e6253 GU	139	if (!key_maps[i])
	140	continue;
	141	memset(temp_map, 0, sizeof(temp_map));
	142	for (j = 0; j < 0x78; j++) {
	143	if (!amikbd_keycode[j])
	144	continue;
	145	temp_map[j] = key_maps[i][amikbd_keycode[j]];
	146	}
	147	for (j = 0; j < NR_KEYS; j++) {
	148	if (!temp_map[j])
	149	temp_map[j] = 0xf200;
	150	}
	151	memcpy(key_maps[i], temp_map, sizeof(temp_map));
	152	}
	153	}
	154	#else /* !CONFIG_HW_CONSOLE */
	155	static inline void amikbd_init_console_keymaps(void) {}
	156	#endif /* !CONFIG_HW_CONSOLE */
	157
1da177e4 LT	158	static const char *amikbd_messages[8] = {
	159	[0] = KERN_ALERT "amikbd: Ctrl-Amiga-Amiga reset warning!!\n",
	160	[1] = KERN_WARNING "amikbd: keyboard lost sync\n",
	161	[2] = KERN_WARNING "amikbd: keyboard buffer overflow\n",
	162	[3] = KERN_WARNING "amikbd: keyboard controller failure\n",
	163	[4] = KERN_ERR "amikbd: keyboard selftest failure\n",
	164	[5] = KERN_INFO "amikbd: initiate power-up key stream\n",
	165	[6] = KERN_INFO "amikbd: terminate power-up key stream\n",
	166	[7] = KERN_WARNING "amikbd: keyboard interrupt\n"
	167	};
	168
5121c717	169	static irqreturn_t amikbd_interrupt(int irq, void *data)
1da177e4	170	{
5121c717	171	struct input_dev *dev = data;
1da177e4 LT	172	unsigned char scancode, down;
	173
	174	scancode = ~ciaa.sdr; /* get and invert scancode (keyboard is active low) */
	175	ciaa.cra \|= 0x40; /* switch SP pin to output for handshake */
	176	udelay(85); /* wait until 85 us have expired */
	177	ciaa.cra &= ~0x40; /* switch CIA serial port to input mode */
	178
	179	down = !(scancode & 1); /* lowest bit is release bit */
	180	scancode >>= 1;
	181
	182	if (scancode < 0x78) { /* scancodes < 0x78 are keys */
5fa28ea4	183	if (scancode == 98) { /* CapsLock is a toggle switch key on Amiga */
5121c717 GU	184	input_report_key(dev, scancode, 1);
5121c717 GU	185	input_report_key(dev, scancode, 0);
1da177e4	186	} else {
5121c717	187	input_report_key(dev, scancode, down);
1da177e4	188	}
3c42f0c3	189
5121c717	190	input_sync(dev);
1da177e4 LT	191	} else /* scancodes >= 0x78 are error codes */
	192	printk(amikbd_messages[scancode - 0x78]);
	193
	194	return IRQ_HANDLED;
	195	}
	196
5121c717	197	static int __init amikbd_probe(struct platform_device *pdev)
1da177e4	198	{
5121c717	199	struct input_dev *dev;
545e6253	200	int i, err;
1da177e4	201
5121c717 GU	202	dev = input_allocate_device();
	203	if (!dev) {
	204	dev_err(&pdev->dev, "Not enough memory for input device\n");
	205	return -ENOMEM;
3c42f0c3 DT	206	}
3c42f0c3 DT	207
5121c717 GU	208	dev->name = pdev->name;
	209	dev->phys = "amikbd/input0";
	210	dev->id.bustype = BUS_AMIGA;
	211	dev->id.vendor = 0x0001;
	212	dev->id.product = 0x0001;
	213	dev->id.version = 0x0100;
	214	dev->dev.parent = &pdev->dev;
3c42f0c3	215
5121c717	216	dev->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_REP);
1da177e4 LT	217
1da177e4 LT	218	for (i = 0; i < 0x78; i++)
5121c717	219	set_bit(i, dev->keybit);
5fa28ea4	220
545e6253 GU	221	amikbd_init_console_keymaps();
545e6253 GU	222
1da177e4	223	ciaa.cra &= ~0x41; /* serial data in, turn off TA */
5121c717 GU	224	err = request_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt, 0, "amikbd",
	225	dev);
	226	if (err)
2b03b60e	227	goto fail2;
2b03b60e	228
5121c717	229	err = input_register_device(dev);
2b03b60e DT	230	if (err)
2b03b60e DT	231	goto fail3;
1da177e4	232
5121c717 GU	233	platform_set_drvdata(pdev, dev);
5121c717 GU	234
1da177e4	235	return 0;
2b03b60e	236
5121c717 GU	237	fail3: free_irq(IRQ_AMIGA_CIAA_SP, dev);
5121c717 GU	238	fail2: input_free_device(dev);
2b03b60e	239	return err;
1da177e4 LT	240	}
1da177e4 LT	241
5121c717 GU	242	static int __exit amikbd_remove(struct platform_device *pdev)
	243	{
	244	struct input_dev *dev = platform_get_drvdata(pdev);
	245
5121c717 GU	246	free_irq(IRQ_AMIGA_CIAA_SP, dev);
	247	input_unregister_device(dev);
	248	return 0;
	249	}
	250
	251	static struct platform_driver amikbd_driver = {
	252	.remove = __exit_p(amikbd_remove),
	253	.driver = {
	254	.name = "amiga-keyboard",
5121c717 GU	255	},
5121c717 GU	256	};
d3d25808	257
e67d541f	258	module_platform_driver_probe(amikbd_driver, amikbd_probe);
5121c717 GU	259
5121c717 GU	260	MODULE_ALIAS("platform:amiga-keyboard");