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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>
21#include <linux/keyboard.h>
22#include <linux/platform_device.h>
23
24#include <asm/amigaints.h>
25#include <asm/amigahw.h>
26#include <asm/irq.h>
27
28MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
29MODULE_DESCRIPTION("Amiga keyboard driver");
30MODULE_LICENSE("GPL");
31
32#ifdef CONFIG_HW_CONSOLE
33static unsigned char amikbd_keycode[0x78] __initdata = {
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
132static void __init amikbd_init_console_keymaps(void)
133{
134
135 unsigned short temp_map[NR_KEYS];
136 int i, j;
137
138 for (i = 0; i < MAX_NR_KEYMAPS; i++) {
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
155static inline void amikbd_init_console_keymaps(void) {}
156#endif
157
158static 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
169static irqreturn_t amikbd_interrupt(int irq, void *data)
170{
171 struct input_dev *dev = data;
172 unsigned char scancode, down;
173
174 scancode = ~ciaa.sdr;
175 ciaa.cra |= 0x40;
176 udelay(85);
177 ciaa.cra &= ~0x40;
178
179 down = !(scancode & 1);
180 scancode >>= 1;
181
182 if (scancode < 0x78) {
183 if (scancode == 98) {
184 input_report_key(dev, scancode, 1);
185 input_report_key(dev, scancode, 0);
186 } else {
187 input_report_key(dev, scancode, down);
188 }
189
190 input_sync(dev);
191 } else
192 printk(amikbd_messages[scancode - 0x78]);
193
194 return IRQ_HANDLED;
195}
196
197static int __init amikbd_probe(struct platform_device *pdev)
198{
199 struct input_dev *dev;
200 int i, err;
201
202 dev = input_allocate_device();
203 if (!dev) {
204 dev_err(&pdev->dev, "Not enough memory for input device\n");
205 return -ENOMEM;
206 }
207
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;
215
216 dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
217
218 for (i = 0; i < 0x78; i++)
219 set_bit(i, dev->keybit);
220
221 amikbd_init_console_keymaps();
222
223 ciaa.cra &= ~0x41;
224 err = request_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt, 0, "amikbd",
225 dev);
226 if (err)
227 goto fail2;
228
229 err = input_register_device(dev);
230 if (err)
231 goto fail3;
232
233 platform_set_drvdata(pdev, dev);
234
235 return 0;
236
237 fail3: free_irq(IRQ_AMIGA_CIAA_SP, dev);
238 fail2: input_free_device(dev);
239 return err;
240}
241
242static int __exit amikbd_remove(struct platform_device *pdev)
243{
244 struct input_dev *dev = platform_get_drvdata(pdev);
245
246 free_irq(IRQ_AMIGA_CIAA_SP, dev);
247 input_unregister_device(dev);
248 return 0;
249}
250
251static struct platform_driver amikbd_driver = {
252 .remove = __exit_p(amikbd_remove),
253 .driver = {
254 .name = "amiga-keyboard",
255 },
256};
257
258module_platform_driver_probe(amikbd_driver, amikbd_probe);
259
260MODULE_ALIAS("platform:amiga-keyboard");
261
