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Commit | Line | Data |
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7005b584 | 1 | /* |
698b1515 WT |
2 | * Front panel driver for Linux |
3 | * Copyright (C) 2000-2008, Willy Tarreau <w@1wt.eu> | |
39f8ea46 | 4 | * Copyright (C) 2016-2017 Glider bvba |
7005b584 | 5 | * |
698b1515 WT |
6 | * This program is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
7005b584 | 10 | * |
698b1515 WT |
11 | * This code drives an LCD module (/dev/lcd), and a keypad (/dev/keypad) |
12 | * connected to a parallel printer port. | |
7005b584 | 13 | * |
698b1515 WT |
14 | * The LCD module may either be an HD44780-like 8-bit parallel LCD, or a 1-bit |
15 | * serial module compatible with Samsung's KS0074. The pins may be connected in | |
16 | * any combination, everything is programmable. | |
7005b584 | 17 | * |
698b1515 WT |
18 | * The keypad consists in a matrix of push buttons connecting input pins to |
19 | * data output pins or to the ground. The combinations have to be hard-coded | |
20 | * in the driver, though several profiles exist and adding new ones is easy. | |
7005b584 | 21 | * |
698b1515 WT |
22 | * Several profiles are provided for commonly found LCD+keypad modules on the |
23 | * market, such as those found in Nexcom's appliances. | |
7005b584 WT |
24 | * |
25 | * FIXME: | |
26 | * - the initialization/deinitialization process is very dirty and should | |
27 | * be rewritten. It may even be buggy. | |
28 | * | |
29 | * TODO: | |
30 | * - document 24 keys keyboard (3 rows of 8 cols, 32 diodes + 2 inputs) | |
31 | * - make the LCD a part of a virtual screen of Vx*Vy | |
32 | * - make the inputs list smp-safe | |
33 | * - change the keyboard to a double mapping : signals -> key_id -> values | |
34 | * so that applications can change values without knowing signals | |
35 | * | |
36 | */ | |
37 | ||
493aa896 TY |
38 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
39 | ||
7005b584 WT |
40 | #include <linux/module.h> |
41 | ||
42 | #include <linux/types.h> | |
43 | #include <linux/errno.h> | |
44 | #include <linux/signal.h> | |
45 | #include <linux/sched.h> | |
46 | #include <linux/spinlock.h> | |
7005b584 WT |
47 | #include <linux/interrupt.h> |
48 | #include <linux/miscdevice.h> | |
698b1515 | 49 | #include <linux/slab.h> |
7005b584 WT |
50 | #include <linux/ioport.h> |
51 | #include <linux/fcntl.h> | |
52 | #include <linux/init.h> | |
53 | #include <linux/delay.h> | |
d85170ed | 54 | #include <linux/kernel.h> |
7005b584 WT |
55 | #include <linux/ctype.h> |
56 | #include <linux/parport.h> | |
7005b584 | 57 | #include <linux/list.h> |
7005b584 | 58 | |
698b1515 | 59 | #include <linux/io.h> |
48f658bb | 60 | #include <linux/uaccess.h> |
7005b584 | 61 | |
39f8ea46 GU |
62 | #include <misc/charlcd.h> |
63 | ||
7005b584 | 64 | #define KEYPAD_MINOR 185 |
7005b584 | 65 | |
7005b584 WT |
66 | #define LCD_MAXBYTES 256 /* max burst write */ |
67 | ||
7005b584 | 68 | #define KEYPAD_BUFFER 64 |
7005b584 | 69 | |
429ccf05 | 70 | /* poll the keyboard this every second */ |
2b3c9eb2 | 71 | #define INPUT_POLL_TIME (HZ / 50) |
429ccf05 HH |
72 | /* a key starts to repeat after this times INPUT_POLL_TIME */ |
73 | #define KEYPAD_REP_START (10) | |
74 | /* a key repeats this times INPUT_POLL_TIME */ | |
75 | #define KEYPAD_REP_DELAY (2) | |
76 | ||
7005b584 WT |
77 | /* converts an r_str() input to an active high, bits string : 000BAOSE */ |
78 | #define PNL_PINPUT(a) ((((unsigned char)(a)) ^ 0x7F) >> 3) | |
79 | ||
698b1515 WT |
80 | #define PNL_PBUSY 0x80 /* inverted input, active low */ |
81 | #define PNL_PACK 0x40 /* direct input, active low */ | |
82 | #define PNL_POUTPA 0x20 /* direct input, active high */ | |
83 | #define PNL_PSELECD 0x10 /* direct input, active high */ | |
84 | #define PNL_PERRORP 0x08 /* direct input, active low */ | |
7005b584 | 85 | |
698b1515 | 86 | #define PNL_PBIDIR 0x20 /* bi-directional ports */ |
429ccf05 HH |
87 | /* high to read data in or-ed with data out */ |
88 | #define PNL_PINTEN 0x10 | |
698b1515 WT |
89 | #define PNL_PSELECP 0x08 /* inverted output, active low */ |
90 | #define PNL_PINITP 0x04 /* direct output, active low */ | |
91 | #define PNL_PAUTOLF 0x02 /* inverted output, active low */ | |
92 | #define PNL_PSTROBE 0x01 /* inverted output */ | |
7005b584 WT |
93 | |
94 | #define PNL_PD0 0x01 | |
95 | #define PNL_PD1 0x02 | |
96 | #define PNL_PD2 0x04 | |
97 | #define PNL_PD3 0x08 | |
98 | #define PNL_PD4 0x10 | |
99 | #define PNL_PD5 0x20 | |
100 | #define PNL_PD6 0x40 | |
101 | #define PNL_PD7 0x80 | |
102 | ||
103 | #define PIN_NONE 0 | |
104 | #define PIN_STROBE 1 | |
105 | #define PIN_D0 2 | |
106 | #define PIN_D1 3 | |
107 | #define PIN_D2 4 | |
108 | #define PIN_D3 5 | |
109 | #define PIN_D4 6 | |
110 | #define PIN_D5 7 | |
111 | #define PIN_D6 8 | |
112 | #define PIN_D7 9 | |
113 | #define PIN_AUTOLF 14 | |
114 | #define PIN_INITP 16 | |
115 | #define PIN_SELECP 17 | |
116 | #define PIN_NOT_SET 127 | |
117 | ||
36277d4a MG |
118 | #define NOT_SET -1 |
119 | ||
7005b584 WT |
120 | /* macros to simplify use of the parallel port */ |
121 | #define r_ctr(x) (parport_read_control((x)->port)) | |
122 | #define r_dtr(x) (parport_read_data((x)->port)) | |
123 | #define r_str(x) (parport_read_status((x)->port)) | |
6ebb56d9 TY |
124 | #define w_ctr(x, y) (parport_write_control((x)->port, (y))) |
125 | #define w_dtr(x, y) (parport_write_data((x)->port, (y))) | |
7005b584 WT |
126 | |
127 | /* this defines which bits are to be used and which ones to be ignored */ | |
429ccf05 HH |
128 | /* logical or of the output bits involved in the scan matrix */ |
129 | static __u8 scan_mask_o; | |
130 | /* logical or of the input bits involved in the scan matrix */ | |
131 | static __u8 scan_mask_i; | |
7005b584 | 132 | |
7005b584 | 133 | enum input_type { |
698b1515 WT |
134 | INPUT_TYPE_STD, |
135 | INPUT_TYPE_KBD, | |
7005b584 WT |
136 | }; |
137 | ||
138 | enum input_state { | |
698b1515 WT |
139 | INPUT_ST_LOW, |
140 | INPUT_ST_RISING, | |
141 | INPUT_ST_HIGH, | |
142 | INPUT_ST_FALLING, | |
7005b584 WT |
143 | }; |
144 | ||
145 | struct logical_input { | |
698b1515 | 146 | struct list_head list; |
35fe0872 KS |
147 | __u64 mask; |
148 | __u64 value; | |
698b1515 WT |
149 | enum input_type type; |
150 | enum input_state state; | |
151 | __u8 rise_time, fall_time; | |
152 | __u8 rise_timer, fall_timer, high_timer; | |
153 | ||
154 | union { | |
429ccf05 | 155 | struct { /* valid when type == INPUT_TYPE_STD */ |
68d386bf MA |
156 | void (*press_fct)(int); |
157 | void (*release_fct)(int); | |
698b1515 WT |
158 | int press_data; |
159 | int release_data; | |
160 | } std; | |
429ccf05 HH |
161 | struct { /* valid when type == INPUT_TYPE_KBD */ |
162 | /* strings can be non null-terminated */ | |
698b1515 WT |
163 | char press_str[sizeof(void *) + sizeof(int)]; |
164 | char repeat_str[sizeof(void *) + sizeof(int)]; | |
165 | char release_str[sizeof(void *) + sizeof(int)]; | |
166 | } kbd; | |
167 | } u; | |
7005b584 WT |
168 | }; |
169 | ||
36d2041a | 170 | static LIST_HEAD(logical_inputs); /* list of all defined logical inputs */ |
7005b584 WT |
171 | |
172 | /* physical contacts history | |
173 | * Physical contacts are a 45 bits string of 9 groups of 5 bits each. | |
174 | * The 8 lower groups correspond to output bits 0 to 7, and the 9th group | |
175 | * corresponds to the ground. | |
176 | * Within each group, bits are stored in the same order as read on the port : | |
177 | * BAPSE (busy=4, ack=3, paper empty=2, select=1, error=0). | |
35fe0872 | 178 | * So, each __u64 is represented like this : |
7005b584 WT |
179 | * 0000000000000000000BAPSEBAPSEBAPSEBAPSEBAPSEBAPSEBAPSEBAPSEBAPSE |
180 | * <-----unused------><gnd><d07><d06><d05><d04><d03><d02><d01><d00> | |
181 | */ | |
429ccf05 HH |
182 | |
183 | /* what has just been read from the I/O ports */ | |
35fe0872 | 184 | static __u64 phys_read; |
429ccf05 | 185 | /* previous phys_read */ |
35fe0872 | 186 | static __u64 phys_read_prev; |
429ccf05 | 187 | /* stabilized phys_read (phys_read|phys_read_prev) */ |
35fe0872 | 188 | static __u64 phys_curr; |
429ccf05 | 189 | /* previous phys_curr */ |
35fe0872 | 190 | static __u64 phys_prev; |
429ccf05 HH |
191 | /* 0 means that at least one logical signal needs be computed */ |
192 | static char inputs_stable; | |
7005b584 | 193 | |
7005b584 | 194 | /* these variables are specific to the keypad */ |
a8b2580b MG |
195 | static struct { |
196 | bool enabled; | |
197 | } keypad; | |
198 | ||
7005b584 | 199 | static char keypad_buffer[KEYPAD_BUFFER]; |
698b1515 WT |
200 | static int keypad_buflen; |
201 | static int keypad_start; | |
202 | static char keypressed; | |
7005b584 | 203 | static wait_queue_head_t keypad_read_wait; |
7005b584 WT |
204 | |
205 | /* lcd-specific variables */ | |
a8b2580b MG |
206 | static struct { |
207 | bool enabled; | |
6d8b588c | 208 | bool initialized; |
6d8b588c | 209 | |
8037e2a3 MG |
210 | int charset; |
211 | int proto; | |
fda4ae18 | 212 | |
8037e2a3 MG |
213 | /* TODO: use union here? */ |
214 | struct { | |
215 | int e; | |
216 | int rs; | |
217 | int rw; | |
218 | int cl; | |
219 | int da; | |
220 | int bl; | |
221 | } pins; | |
6d8b588c | 222 | |
39f8ea46 | 223 | struct charlcd *charlcd; |
a8b2580b | 224 | } lcd; |
429ccf05 | 225 | |
87b8e0c8 MG |
226 | /* Needed only for init */ |
227 | static int selected_lcd_type = NOT_SET; | |
228 | ||
7005b584 WT |
229 | /* |
230 | * Bit masks to convert LCD signals to parallel port outputs. | |
231 | * _d_ are values for data port, _c_ are for control port. | |
232 | * [0] = signal OFF, [1] = signal ON, [2] = mask | |
233 | */ | |
698b1515 WT |
234 | #define BIT_CLR 0 |
235 | #define BIT_SET 1 | |
236 | #define BIT_MSK 2 | |
7005b584 WT |
237 | #define BIT_STATES 3 |
238 | /* | |
239 | * one entry for each bit on the LCD | |
240 | */ | |
241 | #define LCD_BIT_E 0 | |
242 | #define LCD_BIT_RS 1 | |
243 | #define LCD_BIT_RW 2 | |
244 | #define LCD_BIT_BL 3 | |
245 | #define LCD_BIT_CL 4 | |
246 | #define LCD_BIT_DA 5 | |
247 | #define LCD_BITS 6 | |
248 | ||
249 | /* | |
250 | * each bit can be either connected to a DATA or CTRL port | |
251 | */ | |
252 | #define LCD_PORT_C 0 | |
253 | #define LCD_PORT_D 1 | |
254 | #define LCD_PORTS 2 | |
255 | ||
256 | static unsigned char lcd_bits[LCD_PORTS][LCD_BITS][BIT_STATES]; | |
257 | ||
258 | /* | |
259 | * LCD protocols | |
260 | */ | |
261 | #define LCD_PROTO_PARALLEL 0 | |
262 | #define LCD_PROTO_SERIAL 1 | |
77943d31 | 263 | #define LCD_PROTO_TI_DA8XX_LCD 2 |
7005b584 WT |
264 | |
265 | /* | |
266 | * LCD character sets | |
267 | */ | |
268 | #define LCD_CHARSET_NORMAL 0 | |
269 | #define LCD_CHARSET_KS0074 1 | |
270 | ||
271 | /* | |
272 | * LCD types | |
273 | */ | |
274 | #define LCD_TYPE_NONE 0 | |
2c20d92d SM |
275 | #define LCD_TYPE_CUSTOM 1 |
276 | #define LCD_TYPE_OLD 2 | |
277 | #define LCD_TYPE_KS0074 3 | |
278 | #define LCD_TYPE_HANTRONIX 4 | |
279 | #define LCD_TYPE_NEXCOM 5 | |
7005b584 WT |
280 | |
281 | /* | |
282 | * keypad types | |
283 | */ | |
284 | #define KEYPAD_TYPE_NONE 0 | |
285 | #define KEYPAD_TYPE_OLD 1 | |
286 | #define KEYPAD_TYPE_NEW 2 | |
287 | #define KEYPAD_TYPE_NEXCOM 3 | |
288 | ||
289 | /* | |
290 | * panel profiles | |
291 | */ | |
292 | #define PANEL_PROFILE_CUSTOM 0 | |
293 | #define PANEL_PROFILE_OLD 1 | |
294 | #define PANEL_PROFILE_NEW 2 | |
295 | #define PANEL_PROFILE_HANTRONIX 3 | |
296 | #define PANEL_PROFILE_NEXCOM 4 | |
297 | #define PANEL_PROFILE_LARGE 5 | |
298 | ||
299 | /* | |
300 | * Construct custom config from the kernel's configuration | |
301 | */ | |
7005b584 | 302 | #define DEFAULT_PARPORT 0 |
fe4d7e2c | 303 | #define DEFAULT_PROFILE PANEL_PROFILE_LARGE |
98fac3d3 MG |
304 | #define DEFAULT_KEYPAD_TYPE KEYPAD_TYPE_OLD |
305 | #define DEFAULT_LCD_TYPE LCD_TYPE_OLD | |
fe4d7e2c | 306 | #define DEFAULT_LCD_HEIGHT 2 |
7005b584 WT |
307 | #define DEFAULT_LCD_WIDTH 40 |
308 | #define DEFAULT_LCD_BWIDTH 40 | |
309 | #define DEFAULT_LCD_HWIDTH 64 | |
fe4d7e2c | 310 | #define DEFAULT_LCD_CHARSET LCD_CHARSET_NORMAL |
7005b584 WT |
311 | #define DEFAULT_LCD_PROTO LCD_PROTO_PARALLEL |
312 | ||
313 | #define DEFAULT_LCD_PIN_E PIN_AUTOLF | |
314 | #define DEFAULT_LCD_PIN_RS PIN_SELECP | |
315 | #define DEFAULT_LCD_PIN_RW PIN_INITP | |
316 | #define DEFAULT_LCD_PIN_SCL PIN_STROBE | |
317 | #define DEFAULT_LCD_PIN_SDA PIN_D0 | |
318 | #define DEFAULT_LCD_PIN_BL PIN_NOT_SET | |
7005b584 | 319 | |
7005b584 WT |
320 | #ifdef CONFIG_PANEL_PARPORT |
321 | #undef DEFAULT_PARPORT | |
322 | #define DEFAULT_PARPORT CONFIG_PANEL_PARPORT | |
323 | #endif | |
324 | ||
1e13e8aa MG |
325 | #ifdef CONFIG_PANEL_PROFILE |
326 | #undef DEFAULT_PROFILE | |
327 | #define DEFAULT_PROFILE CONFIG_PANEL_PROFILE | |
328 | #endif | |
329 | ||
698b1515 | 330 | #if DEFAULT_PROFILE == 0 /* custom */ |
7005b584 | 331 | #ifdef CONFIG_PANEL_KEYPAD |
98fac3d3 MG |
332 | #undef DEFAULT_KEYPAD_TYPE |
333 | #define DEFAULT_KEYPAD_TYPE CONFIG_PANEL_KEYPAD | |
7005b584 WT |
334 | #endif |
335 | ||
7005b584 | 336 | #ifdef CONFIG_PANEL_LCD |
98fac3d3 MG |
337 | #undef DEFAULT_LCD_TYPE |
338 | #define DEFAULT_LCD_TYPE CONFIG_PANEL_LCD | |
7005b584 WT |
339 | #endif |
340 | ||
1e13e8aa MG |
341 | #ifdef CONFIG_PANEL_LCD_HEIGHT |
342 | #undef DEFAULT_LCD_HEIGHT | |
343 | #define DEFAULT_LCD_HEIGHT CONFIG_PANEL_LCD_HEIGHT | |
344 | #endif | |
345 | ||
7005b584 WT |
346 | #ifdef CONFIG_PANEL_LCD_WIDTH |
347 | #undef DEFAULT_LCD_WIDTH | |
348 | #define DEFAULT_LCD_WIDTH CONFIG_PANEL_LCD_WIDTH | |
349 | #endif | |
350 | ||
351 | #ifdef CONFIG_PANEL_LCD_BWIDTH | |
352 | #undef DEFAULT_LCD_BWIDTH | |
353 | #define DEFAULT_LCD_BWIDTH CONFIG_PANEL_LCD_BWIDTH | |
354 | #endif | |
355 | ||
356 | #ifdef CONFIG_PANEL_LCD_HWIDTH | |
357 | #undef DEFAULT_LCD_HWIDTH | |
358 | #define DEFAULT_LCD_HWIDTH CONFIG_PANEL_LCD_HWIDTH | |
359 | #endif | |
360 | ||
1e13e8aa MG |
361 | #ifdef CONFIG_PANEL_LCD_CHARSET |
362 | #undef DEFAULT_LCD_CHARSET | |
363 | #define DEFAULT_LCD_CHARSET CONFIG_PANEL_LCD_CHARSET | |
7005b584 WT |
364 | #endif |
365 | ||
366 | #ifdef CONFIG_PANEL_LCD_PROTO | |
367 | #undef DEFAULT_LCD_PROTO | |
368 | #define DEFAULT_LCD_PROTO CONFIG_PANEL_LCD_PROTO | |
369 | #endif | |
370 | ||
371 | #ifdef CONFIG_PANEL_LCD_PIN_E | |
372 | #undef DEFAULT_LCD_PIN_E | |
373 | #define DEFAULT_LCD_PIN_E CONFIG_PANEL_LCD_PIN_E | |
374 | #endif | |
375 | ||
376 | #ifdef CONFIG_PANEL_LCD_PIN_RS | |
377 | #undef DEFAULT_LCD_PIN_RS | |
378 | #define DEFAULT_LCD_PIN_RS CONFIG_PANEL_LCD_PIN_RS | |
379 | #endif | |
380 | ||
381 | #ifdef CONFIG_PANEL_LCD_PIN_RW | |
382 | #undef DEFAULT_LCD_PIN_RW | |
383 | #define DEFAULT_LCD_PIN_RW CONFIG_PANEL_LCD_PIN_RW | |
384 | #endif | |
385 | ||
386 | #ifdef CONFIG_PANEL_LCD_PIN_SCL | |
387 | #undef DEFAULT_LCD_PIN_SCL | |
388 | #define DEFAULT_LCD_PIN_SCL CONFIG_PANEL_LCD_PIN_SCL | |
389 | #endif | |
390 | ||
391 | #ifdef CONFIG_PANEL_LCD_PIN_SDA | |
392 | #undef DEFAULT_LCD_PIN_SDA | |
393 | #define DEFAULT_LCD_PIN_SDA CONFIG_PANEL_LCD_PIN_SDA | |
394 | #endif | |
395 | ||
396 | #ifdef CONFIG_PANEL_LCD_PIN_BL | |
397 | #undef DEFAULT_LCD_PIN_BL | |
398 | #define DEFAULT_LCD_PIN_BL CONFIG_PANEL_LCD_PIN_BL | |
399 | #endif | |
400 | ||
7005b584 WT |
401 | #endif /* DEFAULT_PROFILE == 0 */ |
402 | ||
403 | /* global variables */ | |
f4757af8 MG |
404 | |
405 | /* Device single-open policy control */ | |
f4757af8 MG |
406 | static atomic_t keypad_available = ATOMIC_INIT(1); |
407 | ||
698b1515 | 408 | static struct pardevice *pprt; |
7005b584 | 409 | |
f6d1fcfe | 410 | static int keypad_initialized; |
7005b584 | 411 | |
698b1515 | 412 | static DEFINE_SPINLOCK(pprt_lock); |
7005b584 WT |
413 | static struct timer_list scan_timer; |
414 | ||
63023177 | 415 | MODULE_DESCRIPTION("Generic parallel port LCD/Keypad driver"); |
f6d1fcfe | 416 | |
59a66a24 | 417 | static int parport = DEFAULT_PARPORT; |
698b1515 WT |
418 | module_param(parport, int, 0000); |
419 | MODULE_PARM_DESC(parport, "Parallel port index (0=lpt1, 1=lpt2, ...)"); | |
f6d1fcfe | 420 | |
98e0e762 MG |
421 | static int profile = DEFAULT_PROFILE; |
422 | module_param(profile, int, 0000); | |
423 | MODULE_PARM_DESC(profile, | |
424 | "1=16x2 old kp; 2=serial 16x2, new kp; 3=16x2 hantronix; " | |
425 | "4=16x2 nexcom; default=40x2, old kp"); | |
426 | ||
36277d4a | 427 | static int keypad_type = NOT_SET; |
98e0e762 MG |
428 | module_param(keypad_type, int, 0000); |
429 | MODULE_PARM_DESC(keypad_type, | |
430 | "Keypad type: 0=none, 1=old 6 keys, 2=new 6+1 keys, 3=nexcom 4 keys"); | |
431 | ||
36277d4a | 432 | static int lcd_type = NOT_SET; |
98e0e762 MG |
433 | module_param(lcd_type, int, 0000); |
434 | MODULE_PARM_DESC(lcd_type, | |
2c20d92d | 435 | "LCD type: 0=none, 1=compiled-in, 2=old, 3=serial ks0074, 4=hantronix, 5=nexcom"); |
98e0e762 | 436 | |
36277d4a | 437 | static int lcd_height = NOT_SET; |
698b1515 WT |
438 | module_param(lcd_height, int, 0000); |
439 | MODULE_PARM_DESC(lcd_height, "Number of lines on the LCD"); | |
f6d1fcfe | 440 | |
36277d4a | 441 | static int lcd_width = NOT_SET; |
698b1515 WT |
442 | module_param(lcd_width, int, 0000); |
443 | MODULE_PARM_DESC(lcd_width, "Number of columns on the LCD"); | |
f6d1fcfe | 444 | |
36277d4a | 445 | static int lcd_bwidth = NOT_SET; /* internal buffer width (usually 40) */ |
698b1515 WT |
446 | module_param(lcd_bwidth, int, 0000); |
447 | MODULE_PARM_DESC(lcd_bwidth, "Internal LCD line width (40)"); | |
f6d1fcfe | 448 | |
36277d4a | 449 | static int lcd_hwidth = NOT_SET; /* hardware buffer width (usually 64) */ |
698b1515 WT |
450 | module_param(lcd_hwidth, int, 0000); |
451 | MODULE_PARM_DESC(lcd_hwidth, "LCD line hardware address (64)"); | |
f6d1fcfe | 452 | |
36277d4a | 453 | static int lcd_charset = NOT_SET; |
98e0e762 MG |
454 | module_param(lcd_charset, int, 0000); |
455 | MODULE_PARM_DESC(lcd_charset, "LCD character set: 0=standard, 1=KS0074"); | |
f6d1fcfe | 456 | |
36277d4a | 457 | static int lcd_proto = NOT_SET; |
698b1515 | 458 | module_param(lcd_proto, int, 0000); |
429ccf05 | 459 | MODULE_PARM_DESC(lcd_proto, |
fdf4a494 | 460 | "LCD communication: 0=parallel (//), 1=serial, 2=TI LCD Interface"); |
f6d1fcfe | 461 | |
f6d1fcfe WT |
462 | /* |
463 | * These are the parallel port pins the LCD control signals are connected to. | |
464 | * Set this to 0 if the signal is not used. Set it to its opposite value | |
465 | * (negative) if the signal is negated. -MAXINT is used to indicate that the | |
466 | * pin has not been explicitly specified. | |
467 | * | |
63023177 | 468 | * WARNING! no check will be performed about collisions with keypad ! |
f6d1fcfe WT |
469 | */ |
470 | ||
471 | static int lcd_e_pin = PIN_NOT_SET; | |
698b1515 WT |
472 | module_param(lcd_e_pin, int, 0000); |
473 | MODULE_PARM_DESC(lcd_e_pin, | |
fe5d2e01 | 474 | "# of the // port pin connected to LCD 'E' signal, with polarity (-17..17)"); |
f6d1fcfe WT |
475 | |
476 | static int lcd_rs_pin = PIN_NOT_SET; | |
698b1515 WT |
477 | module_param(lcd_rs_pin, int, 0000); |
478 | MODULE_PARM_DESC(lcd_rs_pin, | |
fe5d2e01 | 479 | "# of the // port pin connected to LCD 'RS' signal, with polarity (-17..17)"); |
f6d1fcfe WT |
480 | |
481 | static int lcd_rw_pin = PIN_NOT_SET; | |
698b1515 WT |
482 | module_param(lcd_rw_pin, int, 0000); |
483 | MODULE_PARM_DESC(lcd_rw_pin, | |
fe5d2e01 | 484 | "# of the // port pin connected to LCD 'RW' signal, with polarity (-17..17)"); |
f6d1fcfe | 485 | |
98e0e762 MG |
486 | static int lcd_cl_pin = PIN_NOT_SET; |
487 | module_param(lcd_cl_pin, int, 0000); | |
488 | MODULE_PARM_DESC(lcd_cl_pin, | |
489 | "# of the // port pin connected to serial LCD 'SCL' signal, with polarity (-17..17)"); | |
f6d1fcfe WT |
490 | |
491 | static int lcd_da_pin = PIN_NOT_SET; | |
698b1515 WT |
492 | module_param(lcd_da_pin, int, 0000); |
493 | MODULE_PARM_DESC(lcd_da_pin, | |
fe5d2e01 | 494 | "# of the // port pin connected to serial LCD 'SDA' signal, with polarity (-17..17)"); |
f6d1fcfe | 495 | |
98e0e762 MG |
496 | static int lcd_bl_pin = PIN_NOT_SET; |
497 | module_param(lcd_bl_pin, int, 0000); | |
498 | MODULE_PARM_DESC(lcd_bl_pin, | |
499 | "# of the // port pin connected to LCD backlight, with polarity (-17..17)"); | |
500 | ||
501 | /* Deprecated module parameters - consider not using them anymore */ | |
502 | ||
36277d4a | 503 | static int lcd_enabled = NOT_SET; |
98e0e762 MG |
504 | module_param(lcd_enabled, int, 0000); |
505 | MODULE_PARM_DESC(lcd_enabled, "Deprecated option, use lcd_type instead"); | |
506 | ||
36277d4a | 507 | static int keypad_enabled = NOT_SET; |
98e0e762 MG |
508 | module_param(keypad_enabled, int, 0000); |
509 | MODULE_PARM_DESC(keypad_enabled, "Deprecated option, use keypad_type instead"); | |
510 | ||
7005b584 | 511 | /* for some LCD drivers (ks0074) we need a charset conversion table. */ |
36d2041a | 512 | static const unsigned char lcd_char_conv_ks0074[256] = { |
698b1515 WT |
513 | /* 0|8 1|9 2|A 3|B 4|C 5|D 6|E 7|F */ |
514 | /* 0x00 */ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, | |
515 | /* 0x08 */ 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, | |
516 | /* 0x10 */ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, | |
517 | /* 0x18 */ 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, | |
518 | /* 0x20 */ 0x20, 0x21, 0x22, 0x23, 0xa2, 0x25, 0x26, 0x27, | |
519 | /* 0x28 */ 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, | |
520 | /* 0x30 */ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, | |
521 | /* 0x38 */ 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, | |
522 | /* 0x40 */ 0xa0, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, | |
523 | /* 0x48 */ 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, | |
524 | /* 0x50 */ 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, | |
525 | /* 0x58 */ 0x58, 0x59, 0x5a, 0xfa, 0xfb, 0xfc, 0x1d, 0xc4, | |
526 | /* 0x60 */ 0x96, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, | |
527 | /* 0x68 */ 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, | |
528 | /* 0x70 */ 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, | |
529 | /* 0x78 */ 0x78, 0x79, 0x7a, 0xfd, 0xfe, 0xff, 0xce, 0x20, | |
530 | /* 0x80 */ 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, | |
531 | /* 0x88 */ 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, | |
532 | /* 0x90 */ 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, | |
533 | /* 0x98 */ 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, | |
534 | /* 0xA0 */ 0x20, 0x40, 0xb1, 0xa1, 0x24, 0xa3, 0xfe, 0x5f, | |
535 | /* 0xA8 */ 0x22, 0xc8, 0x61, 0x14, 0x97, 0x2d, 0xad, 0x96, | |
536 | /* 0xB0 */ 0x80, 0x8c, 0x82, 0x83, 0x27, 0x8f, 0x86, 0xdd, | |
537 | /* 0xB8 */ 0x2c, 0x81, 0x6f, 0x15, 0x8b, 0x8a, 0x84, 0x60, | |
538 | /* 0xC0 */ 0xe2, 0xe2, 0xe2, 0x5b, 0x5b, 0xae, 0xbc, 0xa9, | |
539 | /* 0xC8 */ 0xc5, 0xbf, 0xc6, 0xf1, 0xe3, 0xe3, 0xe3, 0xe3, | |
540 | /* 0xD0 */ 0x44, 0x5d, 0xa8, 0xe4, 0xec, 0xec, 0x5c, 0x78, | |
541 | /* 0xD8 */ 0xab, 0xa6, 0xe5, 0x5e, 0x5e, 0xe6, 0xaa, 0xbe, | |
542 | /* 0xE0 */ 0x7f, 0xe7, 0xaf, 0x7b, 0x7b, 0xaf, 0xbd, 0xc8, | |
543 | /* 0xE8 */ 0xa4, 0xa5, 0xc7, 0xf6, 0xa7, 0xe8, 0x69, 0x69, | |
544 | /* 0xF0 */ 0xed, 0x7d, 0xa8, 0xe4, 0xec, 0x5c, 0x5c, 0x25, | |
545 | /* 0xF8 */ 0xac, 0xa6, 0xea, 0xef, 0x7e, 0xeb, 0xb2, 0x79, | |
7005b584 WT |
546 | }; |
547 | ||
36d2041a | 548 | static const char old_keypad_profile[][4][9] = { |
698b1515 WT |
549 | {"S0", "Left\n", "Left\n", ""}, |
550 | {"S1", "Down\n", "Down\n", ""}, | |
551 | {"S2", "Up\n", "Up\n", ""}, | |
552 | {"S3", "Right\n", "Right\n", ""}, | |
553 | {"S4", "Esc\n", "Esc\n", ""}, | |
554 | {"S5", "Ret\n", "Ret\n", ""}, | |
555 | {"", "", "", ""} | |
7005b584 WT |
556 | }; |
557 | ||
558 | /* signals, press, repeat, release */ | |
36d2041a | 559 | static const char new_keypad_profile[][4][9] = { |
698b1515 WT |
560 | {"S0", "Left\n", "Left\n", ""}, |
561 | {"S1", "Down\n", "Down\n", ""}, | |
562 | {"S2", "Up\n", "Up\n", ""}, | |
563 | {"S3", "Right\n", "Right\n", ""}, | |
564 | {"S4s5", "", "Esc\n", "Esc\n"}, | |
565 | {"s4S5", "", "Ret\n", "Ret\n"}, | |
566 | {"S4S5", "Help\n", "", ""}, | |
567 | /* add new signals above this line */ | |
568 | {"", "", "", ""} | |
7005b584 WT |
569 | }; |
570 | ||
571 | /* signals, press, repeat, release */ | |
36d2041a | 572 | static const char nexcom_keypad_profile[][4][9] = { |
698b1515 WT |
573 | {"a-p-e-", "Down\n", "Down\n", ""}, |
574 | {"a-p-E-", "Ret\n", "Ret\n", ""}, | |
575 | {"a-P-E-", "Esc\n", "Esc\n", ""}, | |
576 | {"a-P-e-", "Up\n", "Up\n", ""}, | |
577 | /* add new signals above this line */ | |
578 | {"", "", "", ""} | |
7005b584 WT |
579 | }; |
580 | ||
36d2041a | 581 | static const char (*keypad_profile)[4][9] = old_keypad_profile; |
7005b584 | 582 | |
bea7433b DC |
583 | static DECLARE_BITMAP(bits, LCD_BITS); |
584 | ||
585 | static void lcd_get_bits(unsigned int port, int *val) | |
586 | { | |
587 | unsigned int bit, state; | |
588 | ||
589 | for (bit = 0; bit < LCD_BITS; bit++) { | |
590 | state = test_bit(bit, bits) ? BIT_SET : BIT_CLR; | |
591 | *val &= lcd_bits[port][bit][BIT_MSK]; | |
592 | *val |= lcd_bits[port][bit][state]; | |
593 | } | |
594 | } | |
7005b584 | 595 | |
7005b584 | 596 | /* sets data port bits according to current signals values */ |
698b1515 WT |
597 | static int set_data_bits(void) |
598 | { | |
bea7433b | 599 | int val; |
698b1515 WT |
600 | |
601 | val = r_dtr(pprt); | |
bea7433b | 602 | lcd_get_bits(LCD_PORT_D, &val); |
698b1515 WT |
603 | w_dtr(pprt, val); |
604 | return val; | |
7005b584 WT |
605 | } |
606 | ||
607 | /* sets ctrl port bits according to current signals values */ | |
698b1515 WT |
608 | static int set_ctrl_bits(void) |
609 | { | |
bea7433b | 610 | int val; |
698b1515 WT |
611 | |
612 | val = r_ctr(pprt); | |
bea7433b | 613 | lcd_get_bits(LCD_PORT_C, &val); |
698b1515 WT |
614 | w_ctr(pprt, val); |
615 | return val; | |
7005b584 WT |
616 | } |
617 | ||
618 | /* sets ctrl & data port bits according to current signals values */ | |
6136ac86 | 619 | static void panel_set_bits(void) |
698b1515 WT |
620 | { |
621 | set_data_bits(); | |
622 | set_ctrl_bits(); | |
7005b584 WT |
623 | } |
624 | ||
625 | /* | |
626 | * Converts a parallel port pin (from -25 to 25) to data and control ports | |
627 | * masks, and data and control port bits. The signal will be considered | |
628 | * unconnected if it's on pin 0 or an invalid pin (<-25 or >25). | |
629 | * | |
630 | * Result will be used this way : | |
631 | * out(dport, in(dport) & d_val[2] | d_val[signal_state]) | |
632 | * out(cport, in(cport) & c_val[2] | c_val[signal_state]) | |
633 | */ | |
36d2041a | 634 | static void pin_to_bits(int pin, unsigned char *d_val, unsigned char *c_val) |
698b1515 WT |
635 | { |
636 | int d_bit, c_bit, inv; | |
637 | ||
2d53426b DB |
638 | d_val[0] = 0; |
639 | c_val[0] = 0; | |
640 | d_val[1] = 0; | |
641 | c_val[1] = 0; | |
642 | d_val[2] = 0xFF; | |
643 | c_val[2] = 0xFF; | |
698b1515 WT |
644 | |
645 | if (pin == 0) | |
646 | return; | |
647 | ||
648 | inv = (pin < 0); | |
649 | if (inv) | |
650 | pin = -pin; | |
651 | ||
2d53426b DB |
652 | d_bit = 0; |
653 | c_bit = 0; | |
698b1515 WT |
654 | |
655 | switch (pin) { | |
656 | case PIN_STROBE: /* strobe, inverted */ | |
657 | c_bit = PNL_PSTROBE; | |
658 | inv = !inv; | |
659 | break; | |
660 | case PIN_D0...PIN_D7: /* D0 - D7 = 2 - 9 */ | |
661 | d_bit = 1 << (pin - 2); | |
662 | break; | |
663 | case PIN_AUTOLF: /* autofeed, inverted */ | |
664 | c_bit = PNL_PAUTOLF; | |
665 | inv = !inv; | |
666 | break; | |
429ccf05 | 667 | case PIN_INITP: /* init, direct */ |
698b1515 WT |
668 | c_bit = PNL_PINITP; |
669 | break; | |
670 | case PIN_SELECP: /* select_in, inverted */ | |
671 | c_bit = PNL_PSELECP; | |
672 | inv = !inv; | |
673 | break; | |
674 | default: /* unknown pin, ignore */ | |
675 | break; | |
676 | } | |
677 | ||
678 | if (c_bit) { | |
679 | c_val[2] &= ~c_bit; | |
680 | c_val[!inv] = c_bit; | |
681 | } else if (d_bit) { | |
682 | d_val[2] &= ~d_bit; | |
683 | d_val[!inv] = d_bit; | |
684 | } | |
7005b584 WT |
685 | } |
686 | ||
881bf281 AW |
687 | /* |
688 | * send a serial byte to the LCD panel. The caller is responsible for locking | |
689 | * if needed. | |
690 | */ | |
698b1515 WT |
691 | static void lcd_send_serial(int byte) |
692 | { | |
693 | int bit; | |
694 | ||
881bf281 AW |
695 | /* |
696 | * the data bit is set on D0, and the clock on STROBE. | |
697 | * LCD reads D0 on STROBE's rising edge. | |
698 | */ | |
698b1515 | 699 | for (bit = 0; bit < 8; bit++) { |
bea7433b | 700 | clear_bit(LCD_BIT_CL, bits); /* CLK low */ |
6136ac86 | 701 | panel_set_bits(); |
bea7433b DC |
702 | if (byte & 1) { |
703 | set_bit(LCD_BIT_DA, bits); | |
704 | } else { | |
705 | clear_bit(LCD_BIT_DA, bits); | |
706 | } | |
707 | ||
6136ac86 | 708 | panel_set_bits(); |
429ccf05 | 709 | udelay(2); /* maintain the data during 2 us before CLK up */ |
bea7433b | 710 | set_bit(LCD_BIT_CL, bits); /* CLK high */ |
6136ac86 | 711 | panel_set_bits(); |
429ccf05 | 712 | udelay(1); /* maintain the strobe during 1 us */ |
698b1515 WT |
713 | byte >>= 1; |
714 | } | |
7005b584 WT |
715 | } |
716 | ||
717 | /* turn the backlight on or off */ | |
39f8ea46 | 718 | static void lcd_backlight(struct charlcd *charlcd, int on) |
698b1515 | 719 | { |
39f8ea46 GU |
720 | if (lcd.pins.bl == PIN_NONE) |
721 | return; | |
722 | ||
6975e183 | 723 | /* The backlight is activated by setting the AUTOFEED line to +5V */ |
d4d2dbca | 724 | spin_lock_irq(&pprt_lock); |
bea7433b DC |
725 | if (on) |
726 | set_bit(LCD_BIT_BL, bits); | |
727 | else | |
728 | clear_bit(LCD_BIT_BL, bits); | |
6136ac86 | 729 | panel_set_bits(); |
d4d2dbca | 730 | spin_unlock_irq(&pprt_lock); |
7005b584 WT |
731 | } |
732 | ||
733 | /* send a command to the LCD panel in serial mode */ | |
39f8ea46 | 734 | static void lcd_write_cmd_s(struct charlcd *charlcd, int cmd) |
698b1515 | 735 | { |
d4d2dbca | 736 | spin_lock_irq(&pprt_lock); |
698b1515 WT |
737 | lcd_send_serial(0x1F); /* R/W=W, RS=0 */ |
738 | lcd_send_serial(cmd & 0x0F); | |
739 | lcd_send_serial((cmd >> 4) & 0x0F); | |
b64a1cbe | 740 | udelay(40); /* the shortest command takes at least 40 us */ |
d4d2dbca | 741 | spin_unlock_irq(&pprt_lock); |
7005b584 WT |
742 | } |
743 | ||
744 | /* send data to the LCD panel in serial mode */ | |
39f8ea46 | 745 | static void lcd_write_data_s(struct charlcd *charlcd, int data) |
698b1515 | 746 | { |
d4d2dbca | 747 | spin_lock_irq(&pprt_lock); |
698b1515 WT |
748 | lcd_send_serial(0x5F); /* R/W=W, RS=1 */ |
749 | lcd_send_serial(data & 0x0F); | |
750 | lcd_send_serial((data >> 4) & 0x0F); | |
b64a1cbe | 751 | udelay(40); /* the shortest data takes at least 40 us */ |
d4d2dbca | 752 | spin_unlock_irq(&pprt_lock); |
7005b584 WT |
753 | } |
754 | ||
755 | /* send a command to the LCD panel in 8 bits parallel mode */ | |
39f8ea46 | 756 | static void lcd_write_cmd_p8(struct charlcd *charlcd, int cmd) |
698b1515 | 757 | { |
d4d2dbca | 758 | spin_lock_irq(&pprt_lock); |
698b1515 WT |
759 | /* present the data to the data port */ |
760 | w_dtr(pprt, cmd); | |
b64a1cbe | 761 | udelay(20); /* maintain the data during 20 us before the strobe */ |
7005b584 | 762 | |
bea7433b DC |
763 | set_bit(LCD_BIT_E, bits); |
764 | clear_bit(LCD_BIT_RS, bits); | |
765 | clear_bit(LCD_BIT_RW, bits); | |
698b1515 | 766 | set_ctrl_bits(); |
7005b584 | 767 | |
b64a1cbe | 768 | udelay(40); /* maintain the strobe during 40 us */ |
7005b584 | 769 | |
bea7433b | 770 | clear_bit(LCD_BIT_E, bits); |
698b1515 | 771 | set_ctrl_bits(); |
7005b584 | 772 | |
b64a1cbe | 773 | udelay(120); /* the shortest command takes at least 120 us */ |
d4d2dbca | 774 | spin_unlock_irq(&pprt_lock); |
7005b584 WT |
775 | } |
776 | ||
777 | /* send data to the LCD panel in 8 bits parallel mode */ | |
39f8ea46 | 778 | static void lcd_write_data_p8(struct charlcd *charlcd, int data) |
698b1515 | 779 | { |
d4d2dbca | 780 | spin_lock_irq(&pprt_lock); |
698b1515 WT |
781 | /* present the data to the data port */ |
782 | w_dtr(pprt, data); | |
b64a1cbe | 783 | udelay(20); /* maintain the data during 20 us before the strobe */ |
7005b584 | 784 | |
bea7433b DC |
785 | set_bit(LCD_BIT_E, bits); |
786 | set_bit(LCD_BIT_RS, bits); | |
787 | clear_bit(LCD_BIT_RW, bits); | |
698b1515 | 788 | set_ctrl_bits(); |
7005b584 | 789 | |
b64a1cbe | 790 | udelay(40); /* maintain the strobe during 40 us */ |
7005b584 | 791 | |
bea7433b | 792 | clear_bit(LCD_BIT_E, bits); |
698b1515 | 793 | set_ctrl_bits(); |
7005b584 | 794 | |
b64a1cbe | 795 | udelay(45); /* the shortest data takes at least 45 us */ |
d4d2dbca | 796 | spin_unlock_irq(&pprt_lock); |
7005b584 WT |
797 | } |
798 | ||
77943d31 | 799 | /* send a command to the TI LCD panel */ |
39f8ea46 | 800 | static void lcd_write_cmd_tilcd(struct charlcd *charlcd, int cmd) |
77943d31 | 801 | { |
d4d2dbca | 802 | spin_lock_irq(&pprt_lock); |
77943d31 SR |
803 | /* present the data to the control port */ |
804 | w_ctr(pprt, cmd); | |
b64a1cbe | 805 | udelay(60); |
d4d2dbca | 806 | spin_unlock_irq(&pprt_lock); |
77943d31 SR |
807 | } |
808 | ||
809 | /* send data to the TI LCD panel */ | |
39f8ea46 | 810 | static void lcd_write_data_tilcd(struct charlcd *charlcd, int data) |
77943d31 | 811 | { |
d4d2dbca | 812 | spin_lock_irq(&pprt_lock); |
77943d31 SR |
813 | /* present the data to the data port */ |
814 | w_dtr(pprt, data); | |
b64a1cbe | 815 | udelay(60); |
d4d2dbca | 816 | spin_unlock_irq(&pprt_lock); |
77943d31 SR |
817 | } |
818 | ||
7005b584 | 819 | /* fills the display with spaces and resets X/Y */ |
39f8ea46 | 820 | static void lcd_clear_fast_s(struct charlcd *charlcd) |
698b1515 WT |
821 | { |
822 | int pos; | |
c3ed0afc | 823 | |
d4d2dbca | 824 | spin_lock_irq(&pprt_lock); |
39f8ea46 | 825 | for (pos = 0; pos < charlcd->height * charlcd->hwidth; pos++) { |
698b1515 WT |
826 | lcd_send_serial(0x5F); /* R/W=W, RS=1 */ |
827 | lcd_send_serial(' ' & 0x0F); | |
828 | lcd_send_serial((' ' >> 4) & 0x0F); | |
df44f150 | 829 | /* the shortest data takes at least 40 us */ |
4cff7adb | 830 | udelay(40); |
698b1515 | 831 | } |
d4d2dbca | 832 | spin_unlock_irq(&pprt_lock); |
7005b584 WT |
833 | } |
834 | ||
835 | /* fills the display with spaces and resets X/Y */ | |
39f8ea46 | 836 | static void lcd_clear_fast_p8(struct charlcd *charlcd) |
698b1515 WT |
837 | { |
838 | int pos; | |
c3ed0afc | 839 | |
d4d2dbca | 840 | spin_lock_irq(&pprt_lock); |
39f8ea46 | 841 | for (pos = 0; pos < charlcd->height * charlcd->hwidth; pos++) { |
698b1515 WT |
842 | /* present the data to the data port */ |
843 | w_dtr(pprt, ' '); | |
429ccf05 HH |
844 | |
845 | /* maintain the data during 20 us before the strobe */ | |
b64a1cbe | 846 | udelay(20); |
7005b584 | 847 | |
bea7433b DC |
848 | set_bit(LCD_BIT_E, bits); |
849 | set_bit(LCD_BIT_RS, bits); | |
850 | clear_bit(LCD_BIT_RW, bits); | |
698b1515 | 851 | set_ctrl_bits(); |
7005b584 | 852 | |
429ccf05 | 853 | /* maintain the strobe during 40 us */ |
b64a1cbe | 854 | udelay(40); |
7005b584 | 855 | |
bea7433b | 856 | clear_bit(LCD_BIT_E, bits); |
698b1515 | 857 | set_ctrl_bits(); |
7005b584 | 858 | |
429ccf05 | 859 | /* the shortest data takes at least 45 us */ |
b64a1cbe | 860 | udelay(45); |
698b1515 | 861 | } |
d4d2dbca | 862 | spin_unlock_irq(&pprt_lock); |
7005b584 WT |
863 | } |
864 | ||
77943d31 | 865 | /* fills the display with spaces and resets X/Y */ |
39f8ea46 | 866 | static void lcd_clear_fast_tilcd(struct charlcd *charlcd) |
77943d31 SR |
867 | { |
868 | int pos; | |
c3ed0afc | 869 | |
d4d2dbca | 870 | spin_lock_irq(&pprt_lock); |
39f8ea46 | 871 | for (pos = 0; pos < charlcd->height * charlcd->hwidth; pos++) { |
77943d31 SR |
872 | /* present the data to the data port */ |
873 | w_dtr(pprt, ' '); | |
b64a1cbe | 874 | udelay(60); |
77943d31 SR |
875 | } |
876 | ||
d4d2dbca | 877 | spin_unlock_irq(&pprt_lock); |
7005b584 WT |
878 | } |
879 | ||
7b948f13 | 880 | static const struct charlcd_ops charlcd_serial_ops = { |
39f8ea46 GU |
881 | .write_cmd = lcd_write_cmd_s, |
882 | .write_data = lcd_write_data_s, | |
883 | .clear_fast = lcd_clear_fast_s, | |
884 | .backlight = lcd_backlight, | |
885 | }; | |
7005b584 | 886 | |
7b948f13 | 887 | static const struct charlcd_ops charlcd_parallel_ops = { |
39f8ea46 GU |
888 | .write_cmd = lcd_write_cmd_p8, |
889 | .write_data = lcd_write_data_p8, | |
890 | .clear_fast = lcd_clear_fast_p8, | |
891 | .backlight = lcd_backlight, | |
892 | }; | |
7005b584 | 893 | |
7b948f13 | 894 | static const struct charlcd_ops charlcd_tilcd_ops = { |
39f8ea46 GU |
895 | .write_cmd = lcd_write_cmd_tilcd, |
896 | .write_data = lcd_write_data_tilcd, | |
897 | .clear_fast = lcd_clear_fast_tilcd, | |
898 | .backlight = lcd_backlight, | |
899 | }; | |
7005b584 | 900 | |
39f8ea46 GU |
901 | /* initialize the LCD driver */ |
902 | static void lcd_init(void) | |
429ccf05 | 903 | { |
39f8ea46 | 904 | struct charlcd *charlcd; |
429ccf05 | 905 | |
39f8ea46 GU |
906 | charlcd = charlcd_alloc(0); |
907 | if (!charlcd) | |
908 | return; | |
70a8c3eb | 909 | |
8c17893c | 910 | /* |
39f8ea46 GU |
911 | * Init lcd struct with load-time values to preserve exact |
912 | * current functionality (at least for now). | |
8c17893c | 913 | */ |
39f8ea46 GU |
914 | charlcd->height = lcd_height; |
915 | charlcd->width = lcd_width; | |
916 | charlcd->bwidth = lcd_bwidth; | |
917 | charlcd->hwidth = lcd_hwidth; | |
70a8c3eb | 918 | |
87b8e0c8 | 919 | switch (selected_lcd_type) { |
429ccf05 HH |
920 | case LCD_TYPE_OLD: |
921 | /* parallel mode, 8 bits */ | |
8037e2a3 MG |
922 | lcd.proto = LCD_PROTO_PARALLEL; |
923 | lcd.charset = LCD_CHARSET_NORMAL; | |
924 | lcd.pins.e = PIN_STROBE; | |
925 | lcd.pins.rs = PIN_AUTOLF; | |
926 | ||
39f8ea46 GU |
927 | charlcd->width = 40; |
928 | charlcd->bwidth = 40; | |
929 | charlcd->hwidth = 64; | |
930 | charlcd->height = 2; | |
7005b584 | 931 | break; |
429ccf05 HH |
932 | case LCD_TYPE_KS0074: |
933 | /* serial mode, ks0074 */ | |
8037e2a3 MG |
934 | lcd.proto = LCD_PROTO_SERIAL; |
935 | lcd.charset = LCD_CHARSET_KS0074; | |
936 | lcd.pins.bl = PIN_AUTOLF; | |
937 | lcd.pins.cl = PIN_STROBE; | |
938 | lcd.pins.da = PIN_D0; | |
939 | ||
39f8ea46 GU |
940 | charlcd->width = 16; |
941 | charlcd->bwidth = 40; | |
942 | charlcd->hwidth = 16; | |
943 | charlcd->height = 2; | |
7005b584 | 944 | break; |
429ccf05 HH |
945 | case LCD_TYPE_NEXCOM: |
946 | /* parallel mode, 8 bits, generic */ | |
8037e2a3 MG |
947 | lcd.proto = LCD_PROTO_PARALLEL; |
948 | lcd.charset = LCD_CHARSET_NORMAL; | |
949 | lcd.pins.e = PIN_AUTOLF; | |
950 | lcd.pins.rs = PIN_SELECP; | |
951 | lcd.pins.rw = PIN_INITP; | |
952 | ||
39f8ea46 GU |
953 | charlcd->width = 16; |
954 | charlcd->bwidth = 40; | |
955 | charlcd->hwidth = 64; | |
956 | charlcd->height = 2; | |
7005b584 | 957 | break; |
429ccf05 HH |
958 | case LCD_TYPE_CUSTOM: |
959 | /* customer-defined */ | |
8037e2a3 MG |
960 | lcd.proto = DEFAULT_LCD_PROTO; |
961 | lcd.charset = DEFAULT_LCD_CHARSET; | |
7005b584 WT |
962 | /* default geometry will be set later */ |
963 | break; | |
429ccf05 HH |
964 | case LCD_TYPE_HANTRONIX: |
965 | /* parallel mode, 8 bits, hantronix-like */ | |
698b1515 | 966 | default: |
8037e2a3 MG |
967 | lcd.proto = LCD_PROTO_PARALLEL; |
968 | lcd.charset = LCD_CHARSET_NORMAL; | |
969 | lcd.pins.e = PIN_STROBE; | |
970 | lcd.pins.rs = PIN_SELECP; | |
971 | ||
39f8ea46 GU |
972 | charlcd->width = 16; |
973 | charlcd->bwidth = 40; | |
974 | charlcd->hwidth = 64; | |
975 | charlcd->height = 2; | |
7005b584 | 976 | break; |
698b1515 | 977 | } |
7005b584 | 978 | |
8037e2a3 | 979 | /* Overwrite with module params set on loading */ |
1a4b2e3e | 980 | if (lcd_height != NOT_SET) |
39f8ea46 | 981 | charlcd->height = lcd_height; |
1a4b2e3e | 982 | if (lcd_width != NOT_SET) |
39f8ea46 | 983 | charlcd->width = lcd_width; |
1a4b2e3e | 984 | if (lcd_bwidth != NOT_SET) |
39f8ea46 | 985 | charlcd->bwidth = lcd_bwidth; |
1a4b2e3e | 986 | if (lcd_hwidth != NOT_SET) |
39f8ea46 | 987 | charlcd->hwidth = lcd_hwidth; |
1a4b2e3e | 988 | if (lcd_charset != NOT_SET) |
8037e2a3 | 989 | lcd.charset = lcd_charset; |
1a4b2e3e | 990 | if (lcd_proto != NOT_SET) |
8037e2a3 MG |
991 | lcd.proto = lcd_proto; |
992 | if (lcd_e_pin != PIN_NOT_SET) | |
993 | lcd.pins.e = lcd_e_pin; | |
994 | if (lcd_rs_pin != PIN_NOT_SET) | |
995 | lcd.pins.rs = lcd_rs_pin; | |
996 | if (lcd_rw_pin != PIN_NOT_SET) | |
997 | lcd.pins.rw = lcd_rw_pin; | |
998 | if (lcd_cl_pin != PIN_NOT_SET) | |
999 | lcd.pins.cl = lcd_cl_pin; | |
1000 | if (lcd_da_pin != PIN_NOT_SET) | |
1001 | lcd.pins.da = lcd_da_pin; | |
1002 | if (lcd_bl_pin != PIN_NOT_SET) | |
1003 | lcd.pins.bl = lcd_bl_pin; | |
1004 | ||
698b1515 | 1005 | /* this is used to catch wrong and default values */ |
39f8ea46 GU |
1006 | if (charlcd->width <= 0) |
1007 | charlcd->width = DEFAULT_LCD_WIDTH; | |
1008 | if (charlcd->bwidth <= 0) | |
1009 | charlcd->bwidth = DEFAULT_LCD_BWIDTH; | |
1010 | if (charlcd->hwidth <= 0) | |
1011 | charlcd->hwidth = DEFAULT_LCD_HWIDTH; | |
1012 | if (charlcd->height <= 0) | |
1013 | charlcd->height = DEFAULT_LCD_HEIGHT; | |
8037e2a3 MG |
1014 | |
1015 | if (lcd.proto == LCD_PROTO_SERIAL) { /* SERIAL */ | |
39f8ea46 | 1016 | charlcd->ops = &charlcd_serial_ops; |
698b1515 | 1017 | |
8037e2a3 MG |
1018 | if (lcd.pins.cl == PIN_NOT_SET) |
1019 | lcd.pins.cl = DEFAULT_LCD_PIN_SCL; | |
1020 | if (lcd.pins.da == PIN_NOT_SET) | |
1021 | lcd.pins.da = DEFAULT_LCD_PIN_SDA; | |
698b1515 | 1022 | |
8037e2a3 | 1023 | } else if (lcd.proto == LCD_PROTO_PARALLEL) { /* PARALLEL */ |
39f8ea46 | 1024 | charlcd->ops = &charlcd_parallel_ops; |
698b1515 | 1025 | |
8037e2a3 MG |
1026 | if (lcd.pins.e == PIN_NOT_SET) |
1027 | lcd.pins.e = DEFAULT_LCD_PIN_E; | |
1028 | if (lcd.pins.rs == PIN_NOT_SET) | |
1029 | lcd.pins.rs = DEFAULT_LCD_PIN_RS; | |
1030 | if (lcd.pins.rw == PIN_NOT_SET) | |
1031 | lcd.pins.rw = DEFAULT_LCD_PIN_RW; | |
77943d31 | 1032 | } else { |
39f8ea46 | 1033 | charlcd->ops = &charlcd_tilcd_ops; |
698b1515 | 1034 | } |
7005b584 | 1035 | |
8037e2a3 MG |
1036 | if (lcd.pins.bl == PIN_NOT_SET) |
1037 | lcd.pins.bl = DEFAULT_LCD_PIN_BL; | |
1038 | ||
1039 | if (lcd.pins.e == PIN_NOT_SET) | |
1040 | lcd.pins.e = PIN_NONE; | |
1041 | if (lcd.pins.rs == PIN_NOT_SET) | |
1042 | lcd.pins.rs = PIN_NONE; | |
1043 | if (lcd.pins.rw == PIN_NOT_SET) | |
1044 | lcd.pins.rw = PIN_NONE; | |
1045 | if (lcd.pins.bl == PIN_NOT_SET) | |
1046 | lcd.pins.bl = PIN_NONE; | |
1047 | if (lcd.pins.cl == PIN_NOT_SET) | |
1048 | lcd.pins.cl = PIN_NONE; | |
1049 | if (lcd.pins.da == PIN_NOT_SET) | |
1050 | lcd.pins.da = PIN_NONE; | |
1051 | ||
1052 | if (lcd.charset == NOT_SET) | |
1053 | lcd.charset = DEFAULT_LCD_CHARSET; | |
1054 | ||
1055 | if (lcd.charset == LCD_CHARSET_KS0074) | |
39f8ea46 | 1056 | charlcd->char_conv = lcd_char_conv_ks0074; |
698b1515 | 1057 | else |
39f8ea46 | 1058 | charlcd->char_conv = NULL; |
698b1515 | 1059 | |
8037e2a3 | 1060 | pin_to_bits(lcd.pins.e, lcd_bits[LCD_PORT_D][LCD_BIT_E], |
698b1515 | 1061 | lcd_bits[LCD_PORT_C][LCD_BIT_E]); |
8037e2a3 | 1062 | pin_to_bits(lcd.pins.rs, lcd_bits[LCD_PORT_D][LCD_BIT_RS], |
698b1515 | 1063 | lcd_bits[LCD_PORT_C][LCD_BIT_RS]); |
8037e2a3 | 1064 | pin_to_bits(lcd.pins.rw, lcd_bits[LCD_PORT_D][LCD_BIT_RW], |
698b1515 | 1065 | lcd_bits[LCD_PORT_C][LCD_BIT_RW]); |
8037e2a3 | 1066 | pin_to_bits(lcd.pins.bl, lcd_bits[LCD_PORT_D][LCD_BIT_BL], |
698b1515 | 1067 | lcd_bits[LCD_PORT_C][LCD_BIT_BL]); |
8037e2a3 | 1068 | pin_to_bits(lcd.pins.cl, lcd_bits[LCD_PORT_D][LCD_BIT_CL], |
698b1515 | 1069 | lcd_bits[LCD_PORT_C][LCD_BIT_CL]); |
8037e2a3 | 1070 | pin_to_bits(lcd.pins.da, lcd_bits[LCD_PORT_D][LCD_BIT_DA], |
698b1515 WT |
1071 | lcd_bits[LCD_PORT_C][LCD_BIT_DA]); |
1072 | ||
39f8ea46 | 1073 | lcd.charlcd = charlcd; |
6d8b588c | 1074 | lcd.initialized = true; |
7005b584 WT |
1075 | } |
1076 | ||
7005b584 WT |
1077 | /* |
1078 | * These are the file operation function for user access to /dev/keypad | |
1079 | */ | |
1080 | ||
698b1515 | 1081 | static ssize_t keypad_read(struct file *file, |
cce75f41 | 1082 | char __user *buf, size_t count, loff_t *ppos) |
698b1515 | 1083 | { |
698b1515 | 1084 | unsigned i = *ppos; |
cce75f41 | 1085 | char __user *tmp = buf; |
7005b584 | 1086 | |
698b1515 WT |
1087 | if (keypad_buflen == 0) { |
1088 | if (file->f_flags & O_NONBLOCK) | |
1089 | return -EAGAIN; | |
7005b584 | 1090 | |
310df69c AB |
1091 | if (wait_event_interruptible(keypad_read_wait, |
1092 | keypad_buflen != 0)) | |
698b1515 WT |
1093 | return -EINTR; |
1094 | } | |
7005b584 | 1095 | |
429ccf05 HH |
1096 | for (; count-- > 0 && (keypad_buflen > 0); |
1097 | ++i, ++tmp, --keypad_buflen) { | |
698b1515 WT |
1098 | put_user(keypad_buffer[keypad_start], tmp); |
1099 | keypad_start = (keypad_start + 1) % KEYPAD_BUFFER; | |
1100 | } | |
1101 | *ppos = i; | |
7005b584 | 1102 | |
698b1515 | 1103 | return tmp - buf; |
7005b584 WT |
1104 | } |
1105 | ||
698b1515 WT |
1106 | static int keypad_open(struct inode *inode, struct file *file) |
1107 | { | |
93dc1774 WT |
1108 | int ret; |
1109 | ||
1110 | ret = -EBUSY; | |
f4757af8 | 1111 | if (!atomic_dec_and_test(&keypad_available)) |
93dc1774 | 1112 | goto fail; /* open only once at a time */ |
7005b584 | 1113 | |
93dc1774 | 1114 | ret = -EPERM; |
698b1515 | 1115 | if (file->f_mode & FMODE_WRITE) /* device is read-only */ |
93dc1774 | 1116 | goto fail; |
7005b584 | 1117 | |
698b1515 | 1118 | keypad_buflen = 0; /* flush the buffer on opening */ |
698b1515 | 1119 | return 0; |
93dc1774 WT |
1120 | fail: |
1121 | atomic_inc(&keypad_available); | |
1122 | return ret; | |
7005b584 WT |
1123 | } |
1124 | ||
698b1515 WT |
1125 | static int keypad_release(struct inode *inode, struct file *file) |
1126 | { | |
f4757af8 | 1127 | atomic_inc(&keypad_available); |
698b1515 | 1128 | return 0; |
7005b584 WT |
1129 | } |
1130 | ||
429ccf05 | 1131 | static const struct file_operations keypad_fops = { |
698b1515 WT |
1132 | .read = keypad_read, /* read */ |
1133 | .open = keypad_open, /* open */ | |
1134 | .release = keypad_release, /* close */ | |
6038f373 | 1135 | .llseek = default_llseek, |
7005b584 WT |
1136 | }; |
1137 | ||
1138 | static struct miscdevice keypad_dev = { | |
6c3773de MG |
1139 | .minor = KEYPAD_MINOR, |
1140 | .name = "keypad", | |
1141 | .fops = &keypad_fops, | |
7005b584 WT |
1142 | }; |
1143 | ||
36d2041a | 1144 | static void keypad_send_key(const char *string, int max_len) |
698b1515 | 1145 | { |
698b1515 | 1146 | /* send the key to the device only if a process is attached to it. */ |
f4757af8 | 1147 | if (!atomic_read(&keypad_available)) { |
698b1515 WT |
1148 | while (max_len-- && keypad_buflen < KEYPAD_BUFFER && *string) { |
1149 | keypad_buffer[(keypad_start + keypad_buflen++) % | |
1150 | KEYPAD_BUFFER] = *string++; | |
1151 | } | |
1152 | wake_up_interruptible(&keypad_read_wait); | |
7005b584 | 1153 | } |
7005b584 WT |
1154 | } |
1155 | ||
429ccf05 HH |
1156 | /* this function scans all the bits involving at least one logical signal, |
1157 | * and puts the results in the bitfield "phys_read" (one bit per established | |
1158 | * contact), and sets "phys_read_prev" to "phys_read". | |
7005b584 | 1159 | * |
429ccf05 HH |
1160 | * Note: to debounce input signals, we will only consider as switched a signal |
1161 | * which is stable across 2 measures. Signals which are different between two | |
1162 | * reads will be kept as they previously were in their logical form (phys_prev). | |
1163 | * A signal which has just switched will have a 1 in | |
1164 | * (phys_read ^ phys_read_prev). | |
7005b584 | 1165 | */ |
698b1515 WT |
1166 | static void phys_scan_contacts(void) |
1167 | { | |
1168 | int bit, bitval; | |
1169 | char oldval; | |
1170 | char bitmask; | |
1171 | char gndmask; | |
1172 | ||
1173 | phys_prev = phys_curr; | |
1174 | phys_read_prev = phys_read; | |
1175 | phys_read = 0; /* flush all signals */ | |
1176 | ||
429ccf05 HH |
1177 | /* keep track of old value, with all outputs disabled */ |
1178 | oldval = r_dtr(pprt) | scan_mask_o; | |
1179 | /* activate all keyboard outputs (active low) */ | |
1180 | w_dtr(pprt, oldval & ~scan_mask_o); | |
1181 | ||
1182 | /* will have a 1 for each bit set to gnd */ | |
1183 | bitmask = PNL_PINPUT(r_str(pprt)) & scan_mask_i; | |
1184 | /* disable all matrix signals */ | |
1185 | w_dtr(pprt, oldval); | |
698b1515 WT |
1186 | |
1187 | /* now that all outputs are cleared, the only active input bits are | |
1188 | * directly connected to the ground | |
7005b584 | 1189 | */ |
698b1515 | 1190 | |
429ccf05 HH |
1191 | /* 1 for each grounded input */ |
1192 | gndmask = PNL_PINPUT(r_str(pprt)) & scan_mask_i; | |
1193 | ||
1194 | /* grounded inputs are signals 40-44 */ | |
35fe0872 | 1195 | phys_read |= (__u64)gndmask << 40; |
7005b584 | 1196 | |
698b1515 | 1197 | if (bitmask != gndmask) { |
8c17893c NB |
1198 | /* |
1199 | * since clearing the outputs changed some inputs, we know | |
429ccf05 HH |
1200 | * that some input signals are currently tied to some outputs. |
1201 | * So we'll scan them. | |
698b1515 WT |
1202 | */ |
1203 | for (bit = 0; bit < 8; bit++) { | |
79f2af62 | 1204 | bitval = BIT(bit); |
7005b584 | 1205 | |
698b1515 WT |
1206 | if (!(scan_mask_o & bitval)) /* skip unused bits */ |
1207 | continue; | |
1208 | ||
1209 | w_dtr(pprt, oldval & ~bitval); /* enable this output */ | |
1210 | bitmask = PNL_PINPUT(r_str(pprt)) & ~gndmask; | |
35fe0872 | 1211 | phys_read |= (__u64)bitmask << (5 * bit); |
698b1515 WT |
1212 | } |
1213 | w_dtr(pprt, oldval); /* disable all outputs */ | |
7005b584 | 1214 | } |
8c17893c NB |
1215 | /* |
1216 | * this is easy: use old bits when they are flapping, | |
1217 | * use new ones when stable | |
1218 | */ | |
429ccf05 HH |
1219 | phys_curr = (phys_prev & (phys_read ^ phys_read_prev)) | |
1220 | (phys_read & ~(phys_read ^ phys_read_prev)); | |
1221 | } | |
1222 | ||
1223 | static inline int input_state_high(struct logical_input *input) | |
1224 | { | |
1225 | #if 0 | |
1226 | /* FIXME: | |
1227 | * this is an invalid test. It tries to catch | |
1228 | * transitions from single-key to multiple-key, but | |
1229 | * doesn't take into account the contacts polarity. | |
1230 | * The only solution to the problem is to parse keys | |
1231 | * from the most complex to the simplest combinations, | |
1232 | * and mark them as 'caught' once a combination | |
1233 | * matches, then unmatch it for all other ones. | |
1234 | */ | |
1235 | ||
1236 | /* try to catch dangerous transitions cases : | |
1237 | * someone adds a bit, so this signal was a false | |
1238 | * positive resulting from a transition. We should | |
1239 | * invalidate the signal immediately and not call the | |
1240 | * release function. | |
1241 | * eg: 0 -(press A)-> A -(press B)-> AB : don't match A's release. | |
1242 | */ | |
fdf4a494 DB |
1243 | if (((phys_prev & input->mask) == input->value) && |
1244 | ((phys_curr & input->mask) > input->value)) { | |
429ccf05 HH |
1245 | input->state = INPUT_ST_LOW; /* invalidate */ |
1246 | return 1; | |
1247 | } | |
1248 | #endif | |
1249 | ||
1250 | if ((phys_curr & input->mask) == input->value) { | |
1251 | if ((input->type == INPUT_TYPE_STD) && | |
1252 | (input->high_timer == 0)) { | |
1253 | input->high_timer++; | |
b565b3fb | 1254 | if (input->u.std.press_fct) |
429ccf05 HH |
1255 | input->u.std.press_fct(input->u.std.press_data); |
1256 | } else if (input->type == INPUT_TYPE_KBD) { | |
1257 | /* will turn on the light */ | |
1258 | keypressed = 1; | |
1259 | ||
1260 | if (input->high_timer == 0) { | |
1261 | char *press_str = input->u.kbd.press_str; | |
c3ed0afc | 1262 | |
e6626de5 JC |
1263 | if (press_str[0]) { |
1264 | int s = sizeof(input->u.kbd.press_str); | |
c3ed0afc | 1265 | |
e6626de5 JC |
1266 | keypad_send_key(press_str, s); |
1267 | } | |
429ccf05 HH |
1268 | } |
1269 | ||
1270 | if (input->u.kbd.repeat_str[0]) { | |
1271 | char *repeat_str = input->u.kbd.repeat_str; | |
c3ed0afc | 1272 | |
429ccf05 | 1273 | if (input->high_timer >= KEYPAD_REP_START) { |
e6626de5 | 1274 | int s = sizeof(input->u.kbd.repeat_str); |
c3ed0afc | 1275 | |
429ccf05 | 1276 | input->high_timer -= KEYPAD_REP_DELAY; |
e6626de5 | 1277 | keypad_send_key(repeat_str, s); |
429ccf05 HH |
1278 | } |
1279 | /* we will need to come back here soon */ | |
1280 | inputs_stable = 0; | |
1281 | } | |
1282 | ||
1283 | if (input->high_timer < 255) | |
1284 | input->high_timer++; | |
1285 | } | |
1286 | return 1; | |
429ccf05 | 1287 | } |
083b3638 VH |
1288 | |
1289 | /* else signal falling down. Let's fall through. */ | |
1290 | input->state = INPUT_ST_FALLING; | |
1291 | input->fall_timer = 0; | |
1292 | ||
429ccf05 HH |
1293 | return 0; |
1294 | } | |
1295 | ||
1296 | static inline void input_state_falling(struct logical_input *input) | |
1297 | { | |
1298 | #if 0 | |
1299 | /* FIXME !!! same comment as in input_state_high */ | |
fdf4a494 DB |
1300 | if (((phys_prev & input->mask) == input->value) && |
1301 | ((phys_curr & input->mask) > input->value)) { | |
429ccf05 HH |
1302 | input->state = INPUT_ST_LOW; /* invalidate */ |
1303 | return; | |
1304 | } | |
1305 | #endif | |
1306 | ||
1307 | if ((phys_curr & input->mask) == input->value) { | |
1308 | if (input->type == INPUT_TYPE_KBD) { | |
1309 | /* will turn on the light */ | |
1310 | keypressed = 1; | |
1311 | ||
1312 | if (input->u.kbd.repeat_str[0]) { | |
1313 | char *repeat_str = input->u.kbd.repeat_str; | |
c3ed0afc | 1314 | |
e6626de5 JC |
1315 | if (input->high_timer >= KEYPAD_REP_START) { |
1316 | int s = sizeof(input->u.kbd.repeat_str); | |
c3ed0afc | 1317 | |
429ccf05 | 1318 | input->high_timer -= KEYPAD_REP_DELAY; |
e6626de5 JC |
1319 | keypad_send_key(repeat_str, s); |
1320 | } | |
429ccf05 HH |
1321 | /* we will need to come back here soon */ |
1322 | inputs_stable = 0; | |
1323 | } | |
1324 | ||
1325 | if (input->high_timer < 255) | |
1326 | input->high_timer++; | |
1327 | } | |
1328 | input->state = INPUT_ST_HIGH; | |
1329 | } else if (input->fall_timer >= input->fall_time) { | |
1330 | /* call release event */ | |
1331 | if (input->type == INPUT_TYPE_STD) { | |
1332 | void (*release_fct)(int) = input->u.std.release_fct; | |
c3ed0afc | 1333 | |
b565b3fb | 1334 | if (release_fct) |
429ccf05 HH |
1335 | release_fct(input->u.std.release_data); |
1336 | } else if (input->type == INPUT_TYPE_KBD) { | |
1337 | char *release_str = input->u.kbd.release_str; | |
c3ed0afc | 1338 | |
e6626de5 JC |
1339 | if (release_str[0]) { |
1340 | int s = sizeof(input->u.kbd.release_str); | |
c3ed0afc | 1341 | |
e6626de5 JC |
1342 | keypad_send_key(release_str, s); |
1343 | } | |
429ccf05 HH |
1344 | } |
1345 | ||
1346 | input->state = INPUT_ST_LOW; | |
1347 | } else { | |
1348 | input->fall_timer++; | |
1349 | inputs_stable = 0; | |
1350 | } | |
7005b584 WT |
1351 | } |
1352 | ||
698b1515 WT |
1353 | static void panel_process_inputs(void) |
1354 | { | |
698b1515 | 1355 | struct logical_input *input; |
7005b584 | 1356 | |
698b1515 WT |
1357 | keypressed = 0; |
1358 | inputs_stable = 1; | |
4654bdb6 | 1359 | list_for_each_entry(input, &logical_inputs, list) { |
698b1515 WT |
1360 | switch (input->state) { |
1361 | case INPUT_ST_LOW: | |
1362 | if ((phys_curr & input->mask) != input->value) | |
1363 | break; | |
429ccf05 HH |
1364 | /* if all needed ones were already set previously, |
1365 | * this means that this logical signal has been | |
1366 | * activated by the releasing of another combined | |
1367 | * signal, so we don't want to match. | |
1368 | * eg: AB -(release B)-> A -(release A)-> 0 : | |
1369 | * don't match A. | |
698b1515 WT |
1370 | */ |
1371 | if ((phys_prev & input->mask) == input->value) | |
1372 | break; | |
1373 | input->rise_timer = 0; | |
1374 | input->state = INPUT_ST_RISING; | |
1375 | /* no break here, fall through */ | |
1376 | case INPUT_ST_RISING: | |
1377 | if ((phys_curr & input->mask) != input->value) { | |
1378 | input->state = INPUT_ST_LOW; | |
1379 | break; | |
1380 | } | |
1381 | if (input->rise_timer < input->rise_time) { | |
1382 | inputs_stable = 0; | |
1383 | input->rise_timer++; | |
1384 | break; | |
1385 | } | |
1386 | input->high_timer = 0; | |
1387 | input->state = INPUT_ST_HIGH; | |
1388 | /* no break here, fall through */ | |
1389 | case INPUT_ST_HIGH: | |
429ccf05 | 1390 | if (input_state_high(input)) |
698b1515 | 1391 | break; |
698b1515 WT |
1392 | /* no break here, fall through */ |
1393 | case INPUT_ST_FALLING: | |
429ccf05 | 1394 | input_state_falling(input); |
698b1515 WT |
1395 | } |
1396 | } | |
1397 | } | |
7005b584 | 1398 | |
607a6301 | 1399 | static void panel_scan_timer(struct timer_list *unused) |
698b1515 | 1400 | { |
a8b2580b | 1401 | if (keypad.enabled && keypad_initialized) { |
d4d2dbca | 1402 | if (spin_trylock_irq(&pprt_lock)) { |
698b1515 | 1403 | phys_scan_contacts(); |
429ccf05 HH |
1404 | |
1405 | /* no need for the parport anymore */ | |
d4d2dbca | 1406 | spin_unlock_irq(&pprt_lock); |
7005b584 WT |
1407 | } |
1408 | ||
698b1515 WT |
1409 | if (!inputs_stable || phys_curr != phys_prev) |
1410 | panel_process_inputs(); | |
7005b584 | 1411 | } |
7005b584 | 1412 | |
fda4ae18 | 1413 | if (keypressed && lcd.enabled && lcd.initialized) |
39f8ea46 | 1414 | charlcd_poke(lcd.charlcd); |
698b1515 WT |
1415 | |
1416 | mod_timer(&scan_timer, jiffies + INPUT_POLL_TIME); | |
7005b584 WT |
1417 | } |
1418 | ||
698b1515 WT |
1419 | static void init_scan_timer(void) |
1420 | { | |
b565b3fb | 1421 | if (scan_timer.function) |
698b1515 WT |
1422 | return; /* already started */ |
1423 | ||
607a6301 | 1424 | timer_setup(&scan_timer, panel_scan_timer, 0); |
698b1515 | 1425 | scan_timer.expires = jiffies + INPUT_POLL_TIME; |
698b1515 | 1426 | add_timer(&scan_timer); |
7005b584 WT |
1427 | } |
1428 | ||
1429 | /* converts a name of the form "({BbAaPpSsEe}{01234567-})*" to a series of bits. | |
429ccf05 HH |
1430 | * if <omask> or <imask> are non-null, they will be or'ed with the bits |
1431 | * corresponding to out and in bits respectively. | |
7005b584 WT |
1432 | * returns 1 if ok, 0 if error (in which case, nothing is written). |
1433 | */ | |
35fe0872 | 1434 | static u8 input_name2mask(const char *name, __u64 *mask, __u64 *value, |
d938e1eb | 1435 | u8 *imask, u8 *omask) |
698b1515 | 1436 | { |
8aa7307b | 1437 | const char sigtab[] = "EeSsPpAaBb"; |
d938e1eb | 1438 | u8 im, om; |
35fe0872 | 1439 | __u64 m, v; |
698b1515 | 1440 | |
d12f27e8 KS |
1441 | om = 0; |
1442 | im = 0; | |
2d53426b DB |
1443 | m = 0ULL; |
1444 | v = 0ULL; | |
698b1515 WT |
1445 | while (*name) { |
1446 | int in, out, bit, neg; | |
8aa7307b | 1447 | const char *idx; |
c3ed0afc | 1448 | |
8aa7307b KS |
1449 | idx = strchr(sigtab, *name); |
1450 | if (!idx) | |
698b1515 | 1451 | return 0; /* input name not found */ |
8aa7307b KS |
1452 | |
1453 | in = idx - sigtab; | |
698b1515 WT |
1454 | neg = (in & 1); /* odd (lower) names are negated */ |
1455 | in >>= 1; | |
79f2af62 | 1456 | im |= BIT(in); |
698b1515 WT |
1457 | |
1458 | name++; | |
52ebf93f | 1459 | if (*name >= '0' && *name <= '7') { |
698b1515 | 1460 | out = *name - '0'; |
79f2af62 | 1461 | om |= BIT(out); |
3ac76904 | 1462 | } else if (*name == '-') { |
698b1515 | 1463 | out = 8; |
3ac76904 | 1464 | } else { |
698b1515 | 1465 | return 0; /* unknown bit name */ |
3ac76904 | 1466 | } |
698b1515 WT |
1467 | |
1468 | bit = (out * 5) + in; | |
1469 | ||
1470 | m |= 1ULL << bit; | |
1471 | if (!neg) | |
1472 | v |= 1ULL << bit; | |
1473 | name++; | |
7005b584 | 1474 | } |
698b1515 WT |
1475 | *mask = m; |
1476 | *value = v; | |
1477 | if (imask) | |
1478 | *imask |= im; | |
1479 | if (omask) | |
1480 | *omask |= om; | |
1481 | return 1; | |
7005b584 WT |
1482 | } |
1483 | ||
1484 | /* tries to bind a key to the signal name <name>. The key will send the | |
1485 | * strings <press>, <repeat>, <release> for these respective events. | |
1486 | * Returns the pointer to the new key if ok, NULL if the key could not be bound. | |
1487 | */ | |
36d2041a PH |
1488 | static struct logical_input *panel_bind_key(const char *name, const char *press, |
1489 | const char *repeat, | |
1490 | const char *release) | |
698b1515 WT |
1491 | { |
1492 | struct logical_input *key; | |
1493 | ||
fdf4a494 | 1494 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
eb073a9b | 1495 | if (!key) |
698b1515 | 1496 | return NULL; |
eb073a9b | 1497 | |
698b1515 | 1498 | if (!input_name2mask(name, &key->mask, &key->value, &scan_mask_i, |
cb46f472 KV |
1499 | &scan_mask_o)) { |
1500 | kfree(key); | |
698b1515 | 1501 | return NULL; |
cb46f472 | 1502 | } |
698b1515 WT |
1503 | |
1504 | key->type = INPUT_TYPE_KBD; | |
1505 | key->state = INPUT_ST_LOW; | |
1506 | key->rise_time = 1; | |
1507 | key->fall_time = 1; | |
7005b584 | 1508 | |
698b1515 WT |
1509 | strncpy(key->u.kbd.press_str, press, sizeof(key->u.kbd.press_str)); |
1510 | strncpy(key->u.kbd.repeat_str, repeat, sizeof(key->u.kbd.repeat_str)); | |
1511 | strncpy(key->u.kbd.release_str, release, | |
1512 | sizeof(key->u.kbd.release_str)); | |
1513 | list_add(&key->list, &logical_inputs); | |
1514 | return key; | |
7005b584 WT |
1515 | } |
1516 | ||
63023177 | 1517 | #if 0 |
7005b584 WT |
1518 | /* tries to bind a callback function to the signal name <name>. The function |
1519 | * <press_fct> will be called with the <press_data> arg when the signal is | |
1520 | * activated, and so on for <release_fct>/<release_data> | |
429ccf05 HH |
1521 | * Returns the pointer to the new signal if ok, NULL if the signal could not |
1522 | * be bound. | |
7005b584 WT |
1523 | */ |
1524 | static struct logical_input *panel_bind_callback(char *name, | |
68d386bf | 1525 | void (*press_fct)(int), |
698b1515 | 1526 | int press_data, |
68d386bf | 1527 | void (*release_fct)(int), |
698b1515 WT |
1528 | int release_data) |
1529 | { | |
1530 | struct logical_input *callback; | |
1531 | ||
fdf4a494 | 1532 | callback = kmalloc(sizeof(*callback), GFP_KERNEL); |
eb073a9b | 1533 | if (!callback) |
698b1515 | 1534 | return NULL; |
eb073a9b | 1535 | |
698b1515 WT |
1536 | memset(callback, 0, sizeof(struct logical_input)); |
1537 | if (!input_name2mask(name, &callback->mask, &callback->value, | |
1538 | &scan_mask_i, &scan_mask_o)) | |
1539 | return NULL; | |
1540 | ||
1541 | callback->type = INPUT_TYPE_STD; | |
1542 | callback->state = INPUT_ST_LOW; | |
1543 | callback->rise_time = 1; | |
1544 | callback->fall_time = 1; | |
1545 | callback->u.std.press_fct = press_fct; | |
1546 | callback->u.std.press_data = press_data; | |
1547 | callback->u.std.release_fct = release_fct; | |
1548 | callback->u.std.release_data = release_data; | |
1549 | list_add(&callback->list, &logical_inputs); | |
1550 | return callback; | |
7005b584 | 1551 | } |
63023177 | 1552 | #endif |
7005b584 | 1553 | |
698b1515 WT |
1554 | static void keypad_init(void) |
1555 | { | |
1556 | int keynum; | |
c3ed0afc | 1557 | |
698b1515 WT |
1558 | init_waitqueue_head(&keypad_read_wait); |
1559 | keypad_buflen = 0; /* flushes any eventual noisy keystroke */ | |
7005b584 | 1560 | |
698b1515 | 1561 | /* Let's create all known keys */ |
7005b584 | 1562 | |
698b1515 WT |
1563 | for (keynum = 0; keypad_profile[keynum][0][0]; keynum++) { |
1564 | panel_bind_key(keypad_profile[keynum][0], | |
1565 | keypad_profile[keynum][1], | |
1566 | keypad_profile[keynum][2], | |
1567 | keypad_profile[keynum][3]); | |
1568 | } | |
7005b584 | 1569 | |
698b1515 WT |
1570 | init_scan_timer(); |
1571 | keypad_initialized = 1; | |
7005b584 WT |
1572 | } |
1573 | ||
7005b584 WT |
1574 | /**************************************************/ |
1575 | /* device initialization */ | |
1576 | /**************************************************/ | |
1577 | ||
698b1515 | 1578 | static void panel_attach(struct parport *port) |
7005b584 | 1579 | { |
9be83c0a SM |
1580 | struct pardev_cb panel_cb; |
1581 | ||
698b1515 WT |
1582 | if (port->number != parport) |
1583 | return; | |
1584 | ||
1585 | if (pprt) { | |
eb073a9b TY |
1586 | pr_err("%s: port->number=%d parport=%d, already registered!\n", |
1587 | __func__, port->number, parport); | |
698b1515 WT |
1588 | return; |
1589 | } | |
1590 | ||
9be83c0a SM |
1591 | memset(&panel_cb, 0, sizeof(panel_cb)); |
1592 | panel_cb.private = &pprt; | |
1593 | /* panel_cb.flags = 0 should be PARPORT_DEV_EXCL? */ | |
1594 | ||
1595 | pprt = parport_register_dev_model(port, "panel", &panel_cb, 0); | |
b565b3fb | 1596 | if (!pprt) { |
eb073a9b TY |
1597 | pr_err("%s: port->number=%d parport=%d, parport_register_device() failed\n", |
1598 | __func__, port->number, parport); | |
10f3f5b7 KV |
1599 | return; |
1600 | } | |
698b1515 WT |
1601 | |
1602 | if (parport_claim(pprt)) { | |
eb073a9b TY |
1603 | pr_err("could not claim access to parport%d. Aborting.\n", |
1604 | parport); | |
10f3f5b7 | 1605 | goto err_unreg_device; |
698b1515 WT |
1606 | } |
1607 | ||
429ccf05 HH |
1608 | /* must init LCD first, just in case an IRQ from the keypad is |
1609 | * generated at keypad init | |
1610 | */ | |
a8b2580b | 1611 | if (lcd.enabled) { |
698b1515 | 1612 | lcd_init(); |
39f8ea46 | 1613 | if (!lcd.charlcd || charlcd_register(lcd.charlcd)) |
10f3f5b7 | 1614 | goto err_unreg_device; |
698b1515 WT |
1615 | } |
1616 | ||
a8b2580b | 1617 | if (keypad.enabled) { |
698b1515 | 1618 | keypad_init(); |
10f3f5b7 KV |
1619 | if (misc_register(&keypad_dev)) |
1620 | goto err_lcd_unreg; | |
698b1515 | 1621 | } |
10f3f5b7 KV |
1622 | return; |
1623 | ||
1624 | err_lcd_unreg: | |
a8b2580b | 1625 | if (lcd.enabled) |
39f8ea46 | 1626 | charlcd_unregister(lcd.charlcd); |
10f3f5b7 | 1627 | err_unreg_device: |
39f8ea46 GU |
1628 | kfree(lcd.charlcd); |
1629 | lcd.charlcd = NULL; | |
10f3f5b7 KV |
1630 | parport_unregister_device(pprt); |
1631 | pprt = NULL; | |
7005b584 WT |
1632 | } |
1633 | ||
698b1515 | 1634 | static void panel_detach(struct parport *port) |
7005b584 | 1635 | { |
698b1515 WT |
1636 | if (port->number != parport) |
1637 | return; | |
1638 | ||
1639 | if (!pprt) { | |
eb073a9b TY |
1640 | pr_err("%s: port->number=%d parport=%d, nothing to unregister.\n", |
1641 | __func__, port->number, parport); | |
698b1515 WT |
1642 | return; |
1643 | } | |
b565b3fb | 1644 | if (scan_timer.function) |
7d98c63e | 1645 | del_timer_sync(&scan_timer); |
698b1515 | 1646 | |
3f77b439 GU |
1647 | if (keypad.enabled) { |
1648 | misc_deregister(&keypad_dev); | |
1649 | keypad_initialized = 0; | |
1650 | } | |
698b1515 | 1651 | |
3f77b439 | 1652 | if (lcd.enabled) { |
39f8ea46 | 1653 | charlcd_unregister(lcd.charlcd); |
3f77b439 | 1654 | lcd.initialized = false; |
39f8ea46 GU |
1655 | kfree(lcd.charlcd); |
1656 | lcd.charlcd = NULL; | |
0b0595bf | 1657 | } |
3f77b439 GU |
1658 | |
1659 | /* TODO: free all input signals */ | |
1660 | parport_release(pprt); | |
1661 | parport_unregister_device(pprt); | |
1662 | pprt = NULL; | |
7005b584 WT |
1663 | } |
1664 | ||
1665 | static struct parport_driver panel_driver = { | |
698b1515 | 1666 | .name = "panel", |
9be83c0a | 1667 | .match_port = panel_attach, |
698b1515 | 1668 | .detach = panel_detach, |
9be83c0a | 1669 | .devmodel = true, |
7005b584 WT |
1670 | }; |
1671 | ||
1672 | /* init function */ | |
d9114767 | 1673 | static int __init panel_init_module(void) |
698b1515 | 1674 | { |
e134201b | 1675 | int selected_keypad_type = NOT_SET, err; |
698b1515 | 1676 | |
698b1515 WT |
1677 | /* take care of an eventual profile */ |
1678 | switch (profile) { | |
429ccf05 HH |
1679 | case PANEL_PROFILE_CUSTOM: |
1680 | /* custom profile */ | |
87b8e0c8 MG |
1681 | selected_keypad_type = DEFAULT_KEYPAD_TYPE; |
1682 | selected_lcd_type = DEFAULT_LCD_TYPE; | |
698b1515 | 1683 | break; |
429ccf05 HH |
1684 | case PANEL_PROFILE_OLD: |
1685 | /* 8 bits, 2*16, old keypad */ | |
87b8e0c8 MG |
1686 | selected_keypad_type = KEYPAD_TYPE_OLD; |
1687 | selected_lcd_type = LCD_TYPE_OLD; | |
1688 | ||
1689 | /* TODO: This two are a little hacky, sort it out later */ | |
2d35bcf6 | 1690 | if (lcd_width == NOT_SET) |
698b1515 | 1691 | lcd_width = 16; |
2d35bcf6 | 1692 | if (lcd_hwidth == NOT_SET) |
698b1515 WT |
1693 | lcd_hwidth = 16; |
1694 | break; | |
429ccf05 HH |
1695 | case PANEL_PROFILE_NEW: |
1696 | /* serial, 2*16, new keypad */ | |
87b8e0c8 MG |
1697 | selected_keypad_type = KEYPAD_TYPE_NEW; |
1698 | selected_lcd_type = LCD_TYPE_KS0074; | |
698b1515 | 1699 | break; |
429ccf05 HH |
1700 | case PANEL_PROFILE_HANTRONIX: |
1701 | /* 8 bits, 2*16 hantronix-like, no keypad */ | |
87b8e0c8 MG |
1702 | selected_keypad_type = KEYPAD_TYPE_NONE; |
1703 | selected_lcd_type = LCD_TYPE_HANTRONIX; | |
698b1515 | 1704 | break; |
429ccf05 HH |
1705 | case PANEL_PROFILE_NEXCOM: |
1706 | /* generic 8 bits, 2*16, nexcom keypad, eg. Nexcom. */ | |
87b8e0c8 MG |
1707 | selected_keypad_type = KEYPAD_TYPE_NEXCOM; |
1708 | selected_lcd_type = LCD_TYPE_NEXCOM; | |
698b1515 | 1709 | break; |
429ccf05 HH |
1710 | case PANEL_PROFILE_LARGE: |
1711 | /* 8 bits, 2*40, old keypad */ | |
87b8e0c8 MG |
1712 | selected_keypad_type = KEYPAD_TYPE_OLD; |
1713 | selected_lcd_type = LCD_TYPE_OLD; | |
698b1515 WT |
1714 | break; |
1715 | } | |
1716 | ||
87b8e0c8 MG |
1717 | /* |
1718 | * Overwrite selection with module param values (both keypad and lcd), | |
1719 | * where the deprecated params have lower prio. | |
1720 | */ | |
1a4b2e3e | 1721 | if (keypad_enabled != NOT_SET) |
87b8e0c8 | 1722 | selected_keypad_type = keypad_enabled; |
1a4b2e3e | 1723 | if (keypad_type != NOT_SET) |
87b8e0c8 MG |
1724 | selected_keypad_type = keypad_type; |
1725 | ||
1726 | keypad.enabled = (selected_keypad_type > 0); | |
1727 | ||
1a4b2e3e | 1728 | if (lcd_enabled != NOT_SET) |
87b8e0c8 | 1729 | selected_lcd_type = lcd_enabled; |
1a4b2e3e | 1730 | if (lcd_type != NOT_SET) |
87b8e0c8 MG |
1731 | selected_lcd_type = lcd_type; |
1732 | ||
1733 | lcd.enabled = (selected_lcd_type > 0); | |
698b1515 | 1734 | |
733345ec SM |
1735 | if (lcd.enabled) { |
1736 | /* | |
1737 | * Init lcd struct with load-time values to preserve exact | |
1738 | * current functionality (at least for now). | |
1739 | */ | |
733345ec SM |
1740 | lcd.charset = lcd_charset; |
1741 | lcd.proto = lcd_proto; | |
1742 | lcd.pins.e = lcd_e_pin; | |
1743 | lcd.pins.rs = lcd_rs_pin; | |
1744 | lcd.pins.rw = lcd_rw_pin; | |
1745 | lcd.pins.cl = lcd_cl_pin; | |
1746 | lcd.pins.da = lcd_da_pin; | |
1747 | lcd.pins.bl = lcd_bl_pin; | |
733345ec SM |
1748 | } |
1749 | ||
87b8e0c8 | 1750 | switch (selected_keypad_type) { |
698b1515 WT |
1751 | case KEYPAD_TYPE_OLD: |
1752 | keypad_profile = old_keypad_profile; | |
1753 | break; | |
1754 | case KEYPAD_TYPE_NEW: | |
1755 | keypad_profile = new_keypad_profile; | |
1756 | break; | |
1757 | case KEYPAD_TYPE_NEXCOM: | |
1758 | keypad_profile = nexcom_keypad_profile; | |
1759 | break; | |
1760 | default: | |
1761 | keypad_profile = NULL; | |
1762 | break; | |
1763 | } | |
1764 | ||
a8b2580b | 1765 | if (!lcd.enabled && !keypad.enabled) { |
f43de77c | 1766 | /* no device enabled, let's exit */ |
30f468b2 | 1767 | pr_err("panel driver disabled.\n"); |
698b1515 | 1768 | return -ENODEV; |
7005b584 | 1769 | } |
7005b584 | 1770 | |
e134201b SM |
1771 | err = parport_register_driver(&panel_driver); |
1772 | if (err) { | |
f43de77c | 1773 | pr_err("could not register with parport. Aborting.\n"); |
e134201b | 1774 | return err; |
f43de77c SM |
1775 | } |
1776 | ||
698b1515 | 1777 | if (pprt) |
30f468b2 GU |
1778 | pr_info("panel driver registered on parport%d (io=0x%lx).\n", |
1779 | parport, pprt->port->base); | |
698b1515 | 1780 | else |
30f468b2 | 1781 | pr_info("panel driver not yet registered\n"); |
698b1515 WT |
1782 | return 0; |
1783 | } | |
7005b584 | 1784 | |
f6d1fcfe | 1785 | static void __exit panel_cleanup_module(void) |
698b1515 | 1786 | { |
698b1515 | 1787 | parport_unregister_driver(&panel_driver); |
7005b584 | 1788 | } |
7005b584 | 1789 | |
7005b584 WT |
1790 | module_init(panel_init_module); |
1791 | module_exit(panel_cleanup_module); | |
1792 | MODULE_AUTHOR("Willy Tarreau"); | |
1793 | MODULE_LICENSE("GPL"); | |
7005b584 WT |
1794 | |
1795 | /* | |
1796 | * Local variables: | |
1797 | * c-indent-level: 4 | |
1798 | * tab-width: 8 | |
1799 | * End: | |
1800 | */ |