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Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes
[mirror_ubuntu-artful-kernel.git] / drivers / input / misc / winbond-cir.c
1 /*
2 * winbond-cir.c - Driver for the Consumer IR functionality of Winbond
3 * SuperI/O chips.
4 *
5 * Currently supports the Winbond WPCD376i chip (PNP id WEC1022), but
6 * could probably support others (Winbond WEC102X, NatSemi, etc)
7 * with minor modifications.
8 *
9 * Original Author: David Härdeman <david@hardeman.nu>
10 * Copyright (C) 2009 David Härdeman <david@hardeman.nu>
11 *
12 * Dedicated to Matilda, my newborn daughter, without whose loving attention
13 * this driver would have been finished in half the time and with a fraction
14 * of the bugs.
15 *
16 * Written using:
17 * o Winbond WPCD376I datasheet helpfully provided by Jesse Barnes at Intel
18 * o NatSemi PC87338/PC97338 datasheet (for the serial port stuff)
19 * o DSDT dumps
20 *
21 * Supported features:
22 * o RC6
23 * o Wake-On-CIR functionality
24 *
25 * To do:
26 * o Test NEC and RC5
27 *
28 * Left as an exercise for the reader:
29 * o Learning (I have neither the hardware, nor the need)
30 * o IR Transmit (ibid)
31 *
32 * This program is free software; you can redistribute it and/or modify
33 * it under the terms of the GNU General Public License as published by
34 * the Free Software Foundation; either version 2 of the License, or
35 * (at your option) any later version.
36 *
37 * This program is distributed in the hope that it will be useful,
38 * but WITHOUT ANY WARRANTY; without even the implied warranty of
39 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
40 * GNU General Public License for more details.
41 *
42 * You should have received a copy of the GNU General Public License
43 * along with this program; if not, write to the Free Software
44 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
45 */
46
47 #include <linux/module.h>
48 #include <linux/pnp.h>
49 #include <linux/interrupt.h>
50 #include <linux/timer.h>
51 #include <linux/input.h>
52 #include <linux/leds.h>
53 #include <linux/list.h>
54 #include <linux/spinlock.h>
55 #include <linux/pci_ids.h>
56 #include <linux/io.h>
57 #include <linux/bitrev.h>
58 #include <linux/bitops.h>
59
60 #define DRVNAME "winbond-cir"
61
62 /* CEIR Wake-Up Registers, relative to data->wbase */
63 #define WBCIR_REG_WCEIR_CTL 0x03 /* CEIR Receiver Control */
64 #define WBCIR_REG_WCEIR_STS 0x04 /* CEIR Receiver Status */
65 #define WBCIR_REG_WCEIR_EV_EN 0x05 /* CEIR Receiver Event Enable */
66 #define WBCIR_REG_WCEIR_CNTL 0x06 /* CEIR Receiver Counter Low */
67 #define WBCIR_REG_WCEIR_CNTH 0x07 /* CEIR Receiver Counter High */
68 #define WBCIR_REG_WCEIR_INDEX 0x08 /* CEIR Receiver Index */
69 #define WBCIR_REG_WCEIR_DATA 0x09 /* CEIR Receiver Data */
70 #define WBCIR_REG_WCEIR_CSL 0x0A /* CEIR Re. Compare Strlen */
71 #define WBCIR_REG_WCEIR_CFG1 0x0B /* CEIR Re. Configuration 1 */
72 #define WBCIR_REG_WCEIR_CFG2 0x0C /* CEIR Re. Configuration 2 */
73
74 /* CEIR Enhanced Functionality Registers, relative to data->ebase */
75 #define WBCIR_REG_ECEIR_CTS 0x00 /* Enhanced IR Control Status */
76 #define WBCIR_REG_ECEIR_CCTL 0x01 /* Infrared Counter Control */
77 #define WBCIR_REG_ECEIR_CNT_LO 0x02 /* Infrared Counter LSB */
78 #define WBCIR_REG_ECEIR_CNT_HI 0x03 /* Infrared Counter MSB */
79 #define WBCIR_REG_ECEIR_IREM 0x04 /* Infrared Emitter Status */
80
81 /* SP3 Banked Registers, relative to data->sbase */
82 #define WBCIR_REG_SP3_BSR 0x03 /* Bank Select, all banks */
83 /* Bank 0 */
84 #define WBCIR_REG_SP3_RXDATA 0x00 /* FIFO RX data (r) */
85 #define WBCIR_REG_SP3_TXDATA 0x00 /* FIFO TX data (w) */
86 #define WBCIR_REG_SP3_IER 0x01 /* Interrupt Enable */
87 #define WBCIR_REG_SP3_EIR 0x02 /* Event Identification (r) */
88 #define WBCIR_REG_SP3_FCR 0x02 /* FIFO Control (w) */
89 #define WBCIR_REG_SP3_MCR 0x04 /* Mode Control */
90 #define WBCIR_REG_SP3_LSR 0x05 /* Link Status */
91 #define WBCIR_REG_SP3_MSR 0x06 /* Modem Status */
92 #define WBCIR_REG_SP3_ASCR 0x07 /* Aux Status and Control */
93 /* Bank 2 */
94 #define WBCIR_REG_SP3_BGDL 0x00 /* Baud Divisor LSB */
95 #define WBCIR_REG_SP3_BGDH 0x01 /* Baud Divisor MSB */
96 #define WBCIR_REG_SP3_EXCR1 0x02 /* Extended Control 1 */
97 #define WBCIR_REG_SP3_EXCR2 0x04 /* Extended Control 2 */
98 #define WBCIR_REG_SP3_TXFLV 0x06 /* TX FIFO Level */
99 #define WBCIR_REG_SP3_RXFLV 0x07 /* RX FIFO Level */
100 /* Bank 3 */
101 #define WBCIR_REG_SP3_MRID 0x00 /* Module Identification */
102 #define WBCIR_REG_SP3_SH_LCR 0x01 /* LCR Shadow */
103 #define WBCIR_REG_SP3_SH_FCR 0x02 /* FCR Shadow */
104 /* Bank 4 */
105 #define WBCIR_REG_SP3_IRCR1 0x02 /* Infrared Control 1 */
106 /* Bank 5 */
107 #define WBCIR_REG_SP3_IRCR2 0x04 /* Infrared Control 2 */
108 /* Bank 6 */
109 #define WBCIR_REG_SP3_IRCR3 0x00 /* Infrared Control 3 */
110 #define WBCIR_REG_SP3_SIR_PW 0x02 /* SIR Pulse Width */
111 /* Bank 7 */
112 #define WBCIR_REG_SP3_IRRXDC 0x00 /* IR RX Demod Control */
113 #define WBCIR_REG_SP3_IRTXMC 0x01 /* IR TX Mod Control */
114 #define WBCIR_REG_SP3_RCCFG 0x02 /* CEIR Config */
115 #define WBCIR_REG_SP3_IRCFG1 0x04 /* Infrared Config 1 */
116 #define WBCIR_REG_SP3_IRCFG4 0x07 /* Infrared Config 4 */
117
118 /*
119 * Magic values follow
120 */
121
122 /* No interrupts for WBCIR_REG_SP3_IER and WBCIR_REG_SP3_EIR */
123 #define WBCIR_IRQ_NONE 0x00
124 /* RX data bit for WBCIR_REG_SP3_IER and WBCIR_REG_SP3_EIR */
125 #define WBCIR_IRQ_RX 0x01
126 /* Over/Under-flow bit for WBCIR_REG_SP3_IER and WBCIR_REG_SP3_EIR */
127 #define WBCIR_IRQ_ERR 0x04
128 /* Led enable/disable bit for WBCIR_REG_ECEIR_CTS */
129 #define WBCIR_LED_ENABLE 0x80
130 /* RX data available bit for WBCIR_REG_SP3_LSR */
131 #define WBCIR_RX_AVAIL 0x01
132 /* RX disable bit for WBCIR_REG_SP3_ASCR */
133 #define WBCIR_RX_DISABLE 0x20
134 /* Extended mode enable bit for WBCIR_REG_SP3_EXCR1 */
135 #define WBCIR_EXT_ENABLE 0x01
136 /* Select compare register in WBCIR_REG_WCEIR_INDEX (bits 5 & 6) */
137 #define WBCIR_REGSEL_COMPARE 0x10
138 /* Select mask register in WBCIR_REG_WCEIR_INDEX (bits 5 & 6) */
139 #define WBCIR_REGSEL_MASK 0x20
140 /* Starting address of selected register in WBCIR_REG_WCEIR_INDEX */
141 #define WBCIR_REG_ADDR0 0x00
142
143 /* Valid banks for the SP3 UART */
144 enum wbcir_bank {
145 WBCIR_BANK_0 = 0x00,
146 WBCIR_BANK_1 = 0x80,
147 WBCIR_BANK_2 = 0xE0,
148 WBCIR_BANK_3 = 0xE4,
149 WBCIR_BANK_4 = 0xE8,
150 WBCIR_BANK_5 = 0xEC,
151 WBCIR_BANK_6 = 0xF0,
152 WBCIR_BANK_7 = 0xF4,
153 };
154
155 /* Supported IR Protocols */
156 enum wbcir_protocol {
157 IR_PROTOCOL_RC5 = 0x0,
158 IR_PROTOCOL_NEC = 0x1,
159 IR_PROTOCOL_RC6 = 0x2,
160 };
161
162 /* Misc */
163 #define WBCIR_NAME "Winbond CIR"
164 #define WBCIR_ID_FAMILY 0xF1 /* Family ID for the WPCD376I */
165 #define WBCIR_ID_CHIP 0x04 /* Chip ID for the WPCD376I */
166 #define IR_KEYPRESS_TIMEOUT 250 /* FIXME: should be per-protocol? */
167 #define INVALID_SCANCODE 0x7FFFFFFF /* Invalid with all protos */
168 #define WAKEUP_IOMEM_LEN 0x10 /* Wake-Up I/O Reg Len */
169 #define EHFUNC_IOMEM_LEN 0x10 /* Enhanced Func I/O Reg Len */
170 #define SP_IOMEM_LEN 0x08 /* Serial Port 3 (IR) Reg Len */
171 #define WBCIR_MAX_IDLE_BYTES 10
172
173 static DEFINE_SPINLOCK(wbcir_lock);
174 static DEFINE_RWLOCK(keytable_lock);
175
176 struct wbcir_key {
177 u32 scancode;
178 unsigned int keycode;
179 };
180
181 struct wbcir_keyentry {
182 struct wbcir_key key;
183 struct list_head list;
184 };
185
186 static struct wbcir_key rc6_def_keymap[] = {
187 { 0x800F0400, KEY_NUMERIC_0 },
188 { 0x800F0401, KEY_NUMERIC_1 },
189 { 0x800F0402, KEY_NUMERIC_2 },
190 { 0x800F0403, KEY_NUMERIC_3 },
191 { 0x800F0404, KEY_NUMERIC_4 },
192 { 0x800F0405, KEY_NUMERIC_5 },
193 { 0x800F0406, KEY_NUMERIC_6 },
194 { 0x800F0407, KEY_NUMERIC_7 },
195 { 0x800F0408, KEY_NUMERIC_8 },
196 { 0x800F0409, KEY_NUMERIC_9 },
197 { 0x800F041D, KEY_NUMERIC_STAR },
198 { 0x800F041C, KEY_NUMERIC_POUND },
199 { 0x800F0410, KEY_VOLUMEUP },
200 { 0x800F0411, KEY_VOLUMEDOWN },
201 { 0x800F0412, KEY_CHANNELUP },
202 { 0x800F0413, KEY_CHANNELDOWN },
203 { 0x800F040E, KEY_MUTE },
204 { 0x800F040D, KEY_VENDOR }, /* Vista Logo Key */
205 { 0x800F041E, KEY_UP },
206 { 0x800F041F, KEY_DOWN },
207 { 0x800F0420, KEY_LEFT },
208 { 0x800F0421, KEY_RIGHT },
209 { 0x800F0422, KEY_OK },
210 { 0x800F0423, KEY_ESC },
211 { 0x800F040F, KEY_INFO },
212 { 0x800F040A, KEY_CLEAR },
213 { 0x800F040B, KEY_ENTER },
214 { 0x800F045B, KEY_RED },
215 { 0x800F045C, KEY_GREEN },
216 { 0x800F045D, KEY_YELLOW },
217 { 0x800F045E, KEY_BLUE },
218 { 0x800F045A, KEY_TEXT },
219 { 0x800F0427, KEY_SWITCHVIDEOMODE },
220 { 0x800F040C, KEY_POWER },
221 { 0x800F0450, KEY_RADIO },
222 { 0x800F0448, KEY_PVR },
223 { 0x800F0447, KEY_AUDIO },
224 { 0x800F0426, KEY_EPG },
225 { 0x800F0449, KEY_CAMERA },
226 { 0x800F0425, KEY_TV },
227 { 0x800F044A, KEY_VIDEO },
228 { 0x800F0424, KEY_DVD },
229 { 0x800F0416, KEY_PLAY },
230 { 0x800F0418, KEY_PAUSE },
231 { 0x800F0419, KEY_STOP },
232 { 0x800F0414, KEY_FASTFORWARD },
233 { 0x800F041A, KEY_NEXT },
234 { 0x800F041B, KEY_PREVIOUS },
235 { 0x800F0415, KEY_REWIND },
236 { 0x800F0417, KEY_RECORD },
237 };
238
239 /* Registers and other state is protected by wbcir_lock */
240 struct wbcir_data {
241 unsigned long wbase; /* Wake-Up Baseaddr */
242 unsigned long ebase; /* Enhanced Func. Baseaddr */
243 unsigned long sbase; /* Serial Port Baseaddr */
244 unsigned int irq; /* Serial Port IRQ */
245
246 struct input_dev *input_dev;
247 struct timer_list timer_keyup;
248 struct led_trigger *rxtrigger;
249 struct led_trigger *txtrigger;
250 struct led_classdev led;
251
252 u32 last_scancode;
253 unsigned int last_keycode;
254 u8 last_toggle;
255 u8 keypressed;
256 unsigned long keyup_jiffies;
257 unsigned int idle_count;
258
259 /* RX irdata and parsing state */
260 unsigned long irdata[30];
261 unsigned int irdata_count;
262 unsigned int irdata_idle;
263 unsigned int irdata_off;
264 unsigned int irdata_error;
265
266 /* Protected by keytable_lock */
267 struct list_head keytable;
268 };
269
270 static enum wbcir_protocol protocol = IR_PROTOCOL_RC6;
271 module_param(protocol, uint, 0444);
272 MODULE_PARM_DESC(protocol, "IR protocol to use "
273 "(0 = RC5, 1 = NEC, 2 = RC6A, default)");
274
275 static int invert; /* default = 0 */
276 module_param(invert, bool, 0444);
277 MODULE_PARM_DESC(invert, "Invert the signal from the IR receiver");
278
279 static unsigned int wake_sc = 0x800F040C;
280 module_param(wake_sc, uint, 0644);
281 MODULE_PARM_DESC(wake_sc, "Scancode of the power-on IR command");
282
283 static unsigned int wake_rc6mode = 6;
284 module_param(wake_rc6mode, uint, 0644);
285 MODULE_PARM_DESC(wake_rc6mode, "RC6 mode for the power-on command "
286 "(0 = 0, 6 = 6A, default)");
287
288
289
290 /*****************************************************************************
291 *
292 * UTILITY FUNCTIONS
293 *
294 *****************************************************************************/
295
296 /* Caller needs to hold wbcir_lock */
297 static void
298 wbcir_set_bits(unsigned long addr, u8 bits, u8 mask)
299 {
300 u8 val;
301
302 val = inb(addr);
303 val = ((val & ~mask) | (bits & mask));
304 outb(val, addr);
305 }
306
307 /* Selects the register bank for the serial port */
308 static inline void
309 wbcir_select_bank(struct wbcir_data *data, enum wbcir_bank bank)
310 {
311 outb(bank, data->sbase + WBCIR_REG_SP3_BSR);
312 }
313
314 static enum led_brightness
315 wbcir_led_brightness_get(struct led_classdev *led_cdev)
316 {
317 struct wbcir_data *data = container_of(led_cdev,
318 struct wbcir_data,
319 led);
320
321 if (inb(data->ebase + WBCIR_REG_ECEIR_CTS) & WBCIR_LED_ENABLE)
322 return LED_FULL;
323 else
324 return LED_OFF;
325 }
326
327 static void
328 wbcir_led_brightness_set(struct led_classdev *led_cdev,
329 enum led_brightness brightness)
330 {
331 struct wbcir_data *data = container_of(led_cdev,
332 struct wbcir_data,
333 led);
334
335 wbcir_set_bits(data->ebase + WBCIR_REG_ECEIR_CTS,
336 brightness == LED_OFF ? 0x00 : WBCIR_LED_ENABLE,
337 WBCIR_LED_ENABLE);
338 }
339
340 /* Manchester encodes bits to RC6 message cells (see wbcir_parse_rc6) */
341 static u8
342 wbcir_to_rc6cells(u8 val)
343 {
344 u8 coded = 0x00;
345 int i;
346
347 val &= 0x0F;
348 for (i = 0; i < 4; i++) {
349 if (val & 0x01)
350 coded |= 0x02 << (i * 2);
351 else
352 coded |= 0x01 << (i * 2);
353 val >>= 1;
354 }
355
356 return coded;
357 }
358
359
360
361 /*****************************************************************************
362 *
363 * INPUT FUNCTIONS
364 *
365 *****************************************************************************/
366
367 static unsigned int
368 wbcir_do_getkeycode(struct wbcir_data *data, u32 scancode)
369 {
370 struct wbcir_keyentry *keyentry;
371 unsigned int keycode = KEY_RESERVED;
372 unsigned long flags;
373
374 read_lock_irqsave(&keytable_lock, flags);
375
376 list_for_each_entry(keyentry, &data->keytable, list) {
377 if (keyentry->key.scancode == scancode) {
378 keycode = keyentry->key.keycode;
379 break;
380 }
381 }
382
383 read_unlock_irqrestore(&keytable_lock, flags);
384 return keycode;
385 }
386
387 static int
388 wbcir_getkeycode(struct input_dev *dev, int scancode, int *keycode)
389 {
390 struct wbcir_data *data = input_get_drvdata(dev);
391
392 *keycode = (int)wbcir_do_getkeycode(data, (u32)scancode);
393 return 0;
394 }
395
396 static int
397 wbcir_setkeycode(struct input_dev *dev, int sscancode, int keycode)
398 {
399 struct wbcir_data *data = input_get_drvdata(dev);
400 struct wbcir_keyentry *keyentry;
401 struct wbcir_keyentry *new_keyentry;
402 unsigned long flags;
403 unsigned int old_keycode = KEY_RESERVED;
404 u32 scancode = (u32)sscancode;
405
406 if (keycode < 0 || keycode > KEY_MAX)
407 return -EINVAL;
408
409 new_keyentry = kmalloc(sizeof(*new_keyentry), GFP_KERNEL);
410 if (!new_keyentry)
411 return -ENOMEM;
412
413 write_lock_irqsave(&keytable_lock, flags);
414
415 list_for_each_entry(keyentry, &data->keytable, list) {
416 if (keyentry->key.scancode != scancode)
417 continue;
418
419 old_keycode = keyentry->key.keycode;
420 keyentry->key.keycode = keycode;
421
422 if (keyentry->key.keycode == KEY_RESERVED) {
423 list_del(&keyentry->list);
424 kfree(keyentry);
425 }
426
427 break;
428 }
429
430 set_bit(keycode, dev->keybit);
431
432 if (old_keycode == KEY_RESERVED) {
433 new_keyentry->key.scancode = scancode;
434 new_keyentry->key.keycode = keycode;
435 list_add(&new_keyentry->list, &data->keytable);
436 } else {
437 kfree(new_keyentry);
438 clear_bit(old_keycode, dev->keybit);
439 list_for_each_entry(keyentry, &data->keytable, list) {
440 if (keyentry->key.keycode == old_keycode) {
441 set_bit(old_keycode, dev->keybit);
442 break;
443 }
444 }
445 }
446
447 write_unlock_irqrestore(&keytable_lock, flags);
448 return 0;
449 }
450
451 /*
452 * Timer function to report keyup event some time after keydown is
453 * reported by the ISR.
454 */
455 static void
456 wbcir_keyup(unsigned long cookie)
457 {
458 struct wbcir_data *data = (struct wbcir_data *)cookie;
459 unsigned long flags;
460
461 /*
462 * data->keyup_jiffies is used to prevent a race condition if a
463 * hardware interrupt occurs at this point and the keyup timer
464 * event is moved further into the future as a result.
465 *
466 * The timer will then be reactivated and this function called
467 * again in the future. We need to exit gracefully in that case
468 * to allow the input subsystem to do its auto-repeat magic or
469 * a keyup event might follow immediately after the keydown.
470 */
471
472 spin_lock_irqsave(&wbcir_lock, flags);
473
474 if (time_is_after_eq_jiffies(data->keyup_jiffies) && data->keypressed) {
475 data->keypressed = 0;
476 led_trigger_event(data->rxtrigger, LED_OFF);
477 input_report_key(data->input_dev, data->last_keycode, 0);
478 input_sync(data->input_dev);
479 }
480
481 spin_unlock_irqrestore(&wbcir_lock, flags);
482 }
483
484 static void
485 wbcir_keydown(struct wbcir_data *data, u32 scancode, u8 toggle)
486 {
487 unsigned int keycode;
488
489 /* Repeat? */
490 if (data->last_scancode == scancode &&
491 data->last_toggle == toggle &&
492 data->keypressed)
493 goto set_timer;
494 data->last_scancode = scancode;
495
496 /* Do we need to release an old keypress? */
497 if (data->keypressed) {
498 input_report_key(data->input_dev, data->last_keycode, 0);
499 input_sync(data->input_dev);
500 data->keypressed = 0;
501 }
502
503 /* Report scancode */
504 input_event(data->input_dev, EV_MSC, MSC_SCAN, (int)scancode);
505
506 /* Do we know this scancode? */
507 keycode = wbcir_do_getkeycode(data, scancode);
508 if (keycode == KEY_RESERVED)
509 goto set_timer;
510
511 /* Register a keypress */
512 input_report_key(data->input_dev, keycode, 1);
513 data->keypressed = 1;
514 data->last_keycode = keycode;
515 data->last_toggle = toggle;
516
517 set_timer:
518 input_sync(data->input_dev);
519 led_trigger_event(data->rxtrigger,
520 data->keypressed ? LED_FULL : LED_OFF);
521 data->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT);
522 mod_timer(&data->timer_keyup, data->keyup_jiffies);
523 }
524
525
526
527 /*****************************************************************************
528 *
529 * IR PARSING FUNCTIONS
530 *
531 *****************************************************************************/
532
533 /* Resets all irdata */
534 static void
535 wbcir_reset_irdata(struct wbcir_data *data)
536 {
537 memset(data->irdata, 0, sizeof(data->irdata));
538 data->irdata_count = 0;
539 data->irdata_off = 0;
540 data->irdata_error = 0;
541 }
542
543 /* Adds one bit of irdata */
544 static void
545 add_irdata_bit(struct wbcir_data *data, int set)
546 {
547 if (data->irdata_count >= sizeof(data->irdata) * 8) {
548 data->irdata_error = 1;
549 return;
550 }
551
552 if (set)
553 __set_bit(data->irdata_count, data->irdata);
554 data->irdata_count++;
555 }
556
557 /* Gets count bits of irdata */
558 static u16
559 get_bits(struct wbcir_data *data, int count)
560 {
561 u16 val = 0x0;
562
563 if (data->irdata_count - data->irdata_off < count) {
564 data->irdata_error = 1;
565 return 0x0;
566 }
567
568 while (count > 0) {
569 val <<= 1;
570 if (test_bit(data->irdata_off, data->irdata))
571 val |= 0x1;
572 count--;
573 data->irdata_off++;
574 }
575
576 return val;
577 }
578
579 /* Reads 16 cells and converts them to a byte */
580 static u8
581 wbcir_rc6cells_to_byte(struct wbcir_data *data)
582 {
583 u16 raw = get_bits(data, 16);
584 u8 val = 0x00;
585 int bit;
586
587 for (bit = 0; bit < 8; bit++) {
588 switch (raw & 0x03) {
589 case 0x01:
590 break;
591 case 0x02:
592 val |= (0x01 << bit);
593 break;
594 default:
595 data->irdata_error = 1;
596 break;
597 }
598 raw >>= 2;
599 }
600
601 return val;
602 }
603
604 /* Decodes a number of bits from raw RC5 data */
605 static u8
606 wbcir_get_rc5bits(struct wbcir_data *data, unsigned int count)
607 {
608 u16 raw = get_bits(data, count * 2);
609 u8 val = 0x00;
610 int bit;
611
612 for (bit = 0; bit < count; bit++) {
613 switch (raw & 0x03) {
614 case 0x01:
615 val |= (0x01 << bit);
616 break;
617 case 0x02:
618 break;
619 default:
620 data->irdata_error = 1;
621 break;
622 }
623 raw >>= 2;
624 }
625
626 return val;
627 }
628
629 static void
630 wbcir_parse_rc6(struct device *dev, struct wbcir_data *data)
631 {
632 /*
633 * Normal bits are manchester coded as follows:
634 * cell0 + cell1 = logic "0"
635 * cell1 + cell0 = logic "1"
636 *
637 * The IR pulse has the following components:
638 *
639 * Leader - 6 * cell1 - discarded
640 * Gap - 2 * cell0 - discarded
641 * Start bit - Normal Coding - always "1"
642 * Mode Bit 2 - 0 - Normal Coding
643 * Toggle bit - Normal Coding with double bit time,
644 * e.g. cell0 + cell0 + cell1 + cell1
645 * means logic "0".
646 *
647 * The rest depends on the mode, the following modes are known:
648 *
649 * MODE 0:
650 * Address Bit 7 - 0 - Normal Coding
651 * Command Bit 7 - 0 - Normal Coding
652 *
653 * MODE 6:
654 * The above Toggle Bit is used as a submode bit, 0 = A, 1 = B.
655 * Submode B is for pointing devices, only remotes using submode A
656 * are supported.
657 *
658 * Customer range bit - 0 => Customer = 7 bits, 0...127
659 * 1 => Customer = 15 bits, 32768...65535
660 * Customer Bits - Normal Coding
661 *
662 * Customer codes are allocated by Philips. The rest of the bits
663 * are customer dependent. The following is commonly used (and the
664 * only supported config):
665 *
666 * Toggle Bit - Normal Coding
667 * Address Bit 6 - 0 - Normal Coding
668 * Command Bit 7 - 0 - Normal Coding
669 *
670 * All modes are followed by at least 6 * cell0.
671 *
672 * MODE 0 msglen:
673 * 1 * 2 (start bit) + 3 * 2 (mode) + 2 * 2 (toggle) +
674 * 8 * 2 (address) + 8 * 2 (command) =
675 * 44 cells
676 *
677 * MODE 6A msglen:
678 * 1 * 2 (start bit) + 3 * 2 (mode) + 2 * 2 (submode) +
679 * 1 * 2 (customer range bit) + 7/15 * 2 (customer bits) +
680 * 1 * 2 (toggle bit) + 7 * 2 (address) + 8 * 2 (command) =
681 * 60 - 76 cells
682 */
683 u8 mode;
684 u8 toggle;
685 u16 customer = 0x0;
686 u8 address;
687 u8 command;
688 u32 scancode;
689
690 /* Leader mark */
691 while (get_bits(data, 1) && !data->irdata_error)
692 /* Do nothing */;
693
694 /* Leader space */
695 if (get_bits(data, 1)) {
696 dev_dbg(dev, "RC6 - Invalid leader space\n");
697 return;
698 }
699
700 /* Start bit */
701 if (get_bits(data, 2) != 0x02) {
702 dev_dbg(dev, "RC6 - Invalid start bit\n");
703 return;
704 }
705
706 /* Mode */
707 mode = get_bits(data, 6);
708 switch (mode) {
709 case 0x15: /* 010101 = b000 */
710 mode = 0;
711 break;
712 case 0x29: /* 101001 = b110 */
713 mode = 6;
714 break;
715 default:
716 dev_dbg(dev, "RC6 - Invalid mode\n");
717 return;
718 }
719
720 /* Toggle bit / Submode bit */
721 toggle = get_bits(data, 4);
722 switch (toggle) {
723 case 0x03:
724 toggle = 0;
725 break;
726 case 0x0C:
727 toggle = 1;
728 break;
729 default:
730 dev_dbg(dev, "RC6 - Toggle bit error\n");
731 break;
732 }
733
734 /* Customer */
735 if (mode == 6) {
736 if (toggle != 0) {
737 dev_dbg(dev, "RC6B - Not Supported\n");
738 return;
739 }
740
741 customer = wbcir_rc6cells_to_byte(data);
742
743 if (customer & 0x80) {
744 /* 15 bit customer value */
745 customer <<= 8;
746 customer |= wbcir_rc6cells_to_byte(data);
747 }
748 }
749
750 /* Address */
751 address = wbcir_rc6cells_to_byte(data);
752 if (mode == 6) {
753 toggle = address >> 7;
754 address &= 0x7F;
755 }
756
757 /* Command */
758 command = wbcir_rc6cells_to_byte(data);
759
760 /* Create scancode */
761 scancode = command;
762 scancode |= address << 8;
763 scancode |= customer << 16;
764
765 /* Last sanity check */
766 if (data->irdata_error) {
767 dev_dbg(dev, "RC6 - Cell error(s)\n");
768 return;
769 }
770
771 dev_dbg(dev, "IR-RC6 ad 0x%02X cm 0x%02X cu 0x%04X "
772 "toggle %u mode %u scan 0x%08X\n",
773 address,
774 command,
775 customer,
776 (unsigned int)toggle,
777 (unsigned int)mode,
778 scancode);
779
780 wbcir_keydown(data, scancode, toggle);
781 }
782
783 static void
784 wbcir_parse_rc5(struct device *dev, struct wbcir_data *data)
785 {
786 /*
787 * Bits are manchester coded as follows:
788 * cell1 + cell0 = logic "0"
789 * cell0 + cell1 = logic "1"
790 * (i.e. the reverse of RC6)
791 *
792 * Start bit 1 - "1" - discarded
793 * Start bit 2 - Must be inverted to get command bit 6
794 * Toggle bit
795 * Address Bit 4 - 0
796 * Command Bit 5 - 0
797 */
798 u8 toggle;
799 u8 address;
800 u8 command;
801 u32 scancode;
802
803 /* Start bit 1 */
804 if (!get_bits(data, 1)) {
805 dev_dbg(dev, "RC5 - Invalid start bit\n");
806 return;
807 }
808
809 /* Start bit 2 */
810 if (!wbcir_get_rc5bits(data, 1))
811 command = 0x40;
812 else
813 command = 0x00;
814
815 toggle = wbcir_get_rc5bits(data, 1);
816 address = wbcir_get_rc5bits(data, 5);
817 command |= wbcir_get_rc5bits(data, 6);
818 scancode = address << 7 | command;
819
820 /* Last sanity check */
821 if (data->irdata_error) {
822 dev_dbg(dev, "RC5 - Invalid message\n");
823 return;
824 }
825
826 dev_dbg(dev, "IR-RC5 ad %u cm %u t %u s %u\n",
827 (unsigned int)address,
828 (unsigned int)command,
829 (unsigned int)toggle,
830 (unsigned int)scancode);
831
832 wbcir_keydown(data, scancode, toggle);
833 }
834
835 static void
836 wbcir_parse_nec(struct device *dev, struct wbcir_data *data)
837 {
838 /*
839 * Each bit represents 560 us.
840 *
841 * Leader - 9 ms burst
842 * Gap - 4.5 ms silence
843 * Address1 bit 0 - 7 - Address 1
844 * Address2 bit 0 - 7 - Address 2
845 * Command1 bit 0 - 7 - Command 1
846 * Command2 bit 0 - 7 - Command 2
847 *
848 * Note the bit order!
849 *
850 * With the old NEC protocol, Address2 was the inverse of Address1
851 * and Command2 was the inverse of Command1 and were used as
852 * an error check.
853 *
854 * With NEC extended, Address1 is the LSB of the Address and
855 * Address2 is the MSB, Command parsing remains unchanged.
856 *
857 * A repeat message is coded as:
858 * Leader - 9 ms burst
859 * Gap - 2.25 ms silence
860 * Repeat - 560 us active
861 */
862 u8 address1;
863 u8 address2;
864 u8 command1;
865 u8 command2;
866 u16 address;
867 u32 scancode;
868
869 /* Leader mark */
870 while (get_bits(data, 1) && !data->irdata_error)
871 /* Do nothing */;
872
873 /* Leader space */
874 if (get_bits(data, 4)) {
875 dev_dbg(dev, "NEC - Invalid leader space\n");
876 return;
877 }
878
879 /* Repeat? */
880 if (get_bits(data, 1)) {
881 if (!data->keypressed) {
882 dev_dbg(dev, "NEC - Stray repeat message\n");
883 return;
884 }
885
886 dev_dbg(dev, "IR-NEC repeat s %u\n",
887 (unsigned int)data->last_scancode);
888
889 wbcir_keydown(data, data->last_scancode, data->last_toggle);
890 return;
891 }
892
893 /* Remaining leader space */
894 if (get_bits(data, 3)) {
895 dev_dbg(dev, "NEC - Invalid leader space\n");
896 return;
897 }
898
899 address1 = bitrev8(get_bits(data, 8));
900 address2 = bitrev8(get_bits(data, 8));
901 command1 = bitrev8(get_bits(data, 8));
902 command2 = bitrev8(get_bits(data, 8));
903
904 /* Sanity check */
905 if (data->irdata_error) {
906 dev_dbg(dev, "NEC - Invalid message\n");
907 return;
908 }
909
910 /* Check command validity */
911 if (command1 != ~command2) {
912 dev_dbg(dev, "NEC - Command bytes mismatch\n");
913 return;
914 }
915
916 /* Check for extended NEC protocol */
917 address = address1;
918 if (address1 != ~address2)
919 address |= address2 << 8;
920
921 scancode = address << 8 | command1;
922
923 dev_dbg(dev, "IR-NEC ad %u cm %u s %u\n",
924 (unsigned int)address,
925 (unsigned int)command1,
926 (unsigned int)scancode);
927
928 wbcir_keydown(data, scancode, !data->last_toggle);
929 }
930
931
932
933 /*****************************************************************************
934 *
935 * INTERRUPT FUNCTIONS
936 *
937 *****************************************************************************/
938
939 static irqreturn_t
940 wbcir_irq_handler(int irqno, void *cookie)
941 {
942 struct pnp_dev *device = cookie;
943 struct wbcir_data *data = pnp_get_drvdata(device);
944 struct device *dev = &device->dev;
945 u8 status;
946 unsigned long flags;
947 u8 irdata[8];
948 int i;
949 unsigned int hw;
950
951 spin_lock_irqsave(&wbcir_lock, flags);
952
953 wbcir_select_bank(data, WBCIR_BANK_0);
954
955 status = inb(data->sbase + WBCIR_REG_SP3_EIR);
956
957 if (!(status & (WBCIR_IRQ_RX | WBCIR_IRQ_ERR))) {
958 spin_unlock_irqrestore(&wbcir_lock, flags);
959 return IRQ_NONE;
960 }
961
962 if (status & WBCIR_IRQ_ERR)
963 data->irdata_error = 1;
964
965 if (!(status & WBCIR_IRQ_RX))
966 goto out;
967
968 /* Since RXHDLEV is set, at least 8 bytes are in the FIFO */
969 insb(data->sbase + WBCIR_REG_SP3_RXDATA, &irdata[0], 8);
970
971 for (i = 0; i < sizeof(irdata); i++) {
972 hw = hweight8(irdata[i]);
973 if (hw > 4)
974 add_irdata_bit(data, 0);
975 else
976 add_irdata_bit(data, 1);
977
978 if (hw == 8)
979 data->idle_count++;
980 else
981 data->idle_count = 0;
982 }
983
984 if (data->idle_count > WBCIR_MAX_IDLE_BYTES) {
985 /* Set RXINACTIVE... */
986 outb(WBCIR_RX_DISABLE, data->sbase + WBCIR_REG_SP3_ASCR);
987
988 /* ...and drain the FIFO */
989 while (inb(data->sbase + WBCIR_REG_SP3_LSR) & WBCIR_RX_AVAIL)
990 inb(data->sbase + WBCIR_REG_SP3_RXDATA);
991
992 dev_dbg(dev, "IRDATA:\n");
993 for (i = 0; i < data->irdata_count; i += BITS_PER_LONG)
994 dev_dbg(dev, "0x%08lX\n", data->irdata[i/BITS_PER_LONG]);
995
996 switch (protocol) {
997 case IR_PROTOCOL_RC5:
998 wbcir_parse_rc5(dev, data);
999 break;
1000 case IR_PROTOCOL_RC6:
1001 wbcir_parse_rc6(dev, data);
1002 break;
1003 case IR_PROTOCOL_NEC:
1004 wbcir_parse_nec(dev, data);
1005 break;
1006 }
1007
1008 wbcir_reset_irdata(data);
1009 data->idle_count = 0;
1010 }
1011
1012 out:
1013 spin_unlock_irqrestore(&wbcir_lock, flags);
1014 return IRQ_HANDLED;
1015 }
1016
1017
1018
1019 /*****************************************************************************
1020 *
1021 * SUSPEND/RESUME FUNCTIONS
1022 *
1023 *****************************************************************************/
1024
1025 static void
1026 wbcir_shutdown(struct pnp_dev *device)
1027 {
1028 struct device *dev = &device->dev;
1029 struct wbcir_data *data = pnp_get_drvdata(device);
1030 int do_wake = 1;
1031 u8 match[11];
1032 u8 mask[11];
1033 u8 rc6_csl = 0;
1034 int i;
1035
1036 memset(match, 0, sizeof(match));
1037 memset(mask, 0, sizeof(mask));
1038
1039 if (wake_sc == INVALID_SCANCODE || !device_may_wakeup(dev)) {
1040 do_wake = 0;
1041 goto finish;
1042 }
1043
1044 switch (protocol) {
1045 case IR_PROTOCOL_RC5:
1046 if (wake_sc > 0xFFF) {
1047 do_wake = 0;
1048 dev_err(dev, "RC5 - Invalid wake scancode\n");
1049 break;
1050 }
1051
1052 /* Mask = 13 bits, ex toggle */
1053 mask[0] = 0xFF;
1054 mask[1] = 0x17;
1055
1056 match[0] = (wake_sc & 0x003F); /* 6 command bits */
1057 match[0] |= (wake_sc & 0x0180) >> 1; /* 2 address bits */
1058 match[1] = (wake_sc & 0x0E00) >> 9; /* 3 address bits */
1059 if (!(wake_sc & 0x0040)) /* 2nd start bit */
1060 match[1] |= 0x10;
1061
1062 break;
1063
1064 case IR_PROTOCOL_NEC:
1065 if (wake_sc > 0xFFFFFF) {
1066 do_wake = 0;
1067 dev_err(dev, "NEC - Invalid wake scancode\n");
1068 break;
1069 }
1070
1071 mask[0] = mask[1] = mask[2] = mask[3] = 0xFF;
1072
1073 match[1] = bitrev8((wake_sc & 0xFF));
1074 match[0] = ~match[1];
1075
1076 match[3] = bitrev8((wake_sc & 0xFF00) >> 8);
1077 if (wake_sc > 0xFFFF)
1078 match[2] = bitrev8((wake_sc & 0xFF0000) >> 16);
1079 else
1080 match[2] = ~match[3];
1081
1082 break;
1083
1084 case IR_PROTOCOL_RC6:
1085
1086 if (wake_rc6mode == 0) {
1087 if (wake_sc > 0xFFFF) {
1088 do_wake = 0;
1089 dev_err(dev, "RC6 - Invalid wake scancode\n");
1090 break;
1091 }
1092
1093 /* Command */
1094 match[0] = wbcir_to_rc6cells(wake_sc >> 0);
1095 mask[0] = 0xFF;
1096 match[1] = wbcir_to_rc6cells(wake_sc >> 4);
1097 mask[1] = 0xFF;
1098
1099 /* Address */
1100 match[2] = wbcir_to_rc6cells(wake_sc >> 8);
1101 mask[2] = 0xFF;
1102 match[3] = wbcir_to_rc6cells(wake_sc >> 12);
1103 mask[3] = 0xFF;
1104
1105 /* Header */
1106 match[4] = 0x50; /* mode1 = mode0 = 0, ignore toggle */
1107 mask[4] = 0xF0;
1108 match[5] = 0x09; /* start bit = 1, mode2 = 0 */
1109 mask[5] = 0x0F;
1110
1111 rc6_csl = 44;
1112
1113 } else if (wake_rc6mode == 6) {
1114 i = 0;
1115
1116 /* Command */
1117 match[i] = wbcir_to_rc6cells(wake_sc >> 0);
1118 mask[i++] = 0xFF;
1119 match[i] = wbcir_to_rc6cells(wake_sc >> 4);
1120 mask[i++] = 0xFF;
1121
1122 /* Address + Toggle */
1123 match[i] = wbcir_to_rc6cells(wake_sc >> 8);
1124 mask[i++] = 0xFF;
1125 match[i] = wbcir_to_rc6cells(wake_sc >> 12);
1126 mask[i++] = 0x3F;
1127
1128 /* Customer bits 7 - 0 */
1129 match[i] = wbcir_to_rc6cells(wake_sc >> 16);
1130 mask[i++] = 0xFF;
1131 match[i] = wbcir_to_rc6cells(wake_sc >> 20);
1132 mask[i++] = 0xFF;
1133
1134 if (wake_sc & 0x80000000) {
1135 /* Customer range bit and bits 15 - 8 */
1136 match[i] = wbcir_to_rc6cells(wake_sc >> 24);
1137 mask[i++] = 0xFF;
1138 match[i] = wbcir_to_rc6cells(wake_sc >> 28);
1139 mask[i++] = 0xFF;
1140 rc6_csl = 76;
1141 } else if (wake_sc <= 0x007FFFFF) {
1142 rc6_csl = 60;
1143 } else {
1144 do_wake = 0;
1145 dev_err(dev, "RC6 - Invalid wake scancode\n");
1146 break;
1147 }
1148
1149 /* Header */
1150 match[i] = 0x93; /* mode1 = mode0 = 1, submode = 0 */
1151 mask[i++] = 0xFF;
1152 match[i] = 0x0A; /* start bit = 1, mode2 = 1 */
1153 mask[i++] = 0x0F;
1154
1155 } else {
1156 do_wake = 0;
1157 dev_err(dev, "RC6 - Invalid wake mode\n");
1158 }
1159
1160 break;
1161
1162 default:
1163 do_wake = 0;
1164 break;
1165 }
1166
1167 finish:
1168 if (do_wake) {
1169 /* Set compare and compare mask */
1170 wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_INDEX,
1171 WBCIR_REGSEL_COMPARE | WBCIR_REG_ADDR0,
1172 0x3F);
1173 outsb(data->wbase + WBCIR_REG_WCEIR_DATA, match, 11);
1174 wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_INDEX,
1175 WBCIR_REGSEL_MASK | WBCIR_REG_ADDR0,
1176 0x3F);
1177 outsb(data->wbase + WBCIR_REG_WCEIR_DATA, mask, 11);
1178
1179 /* RC6 Compare String Len */
1180 outb(rc6_csl, data->wbase + WBCIR_REG_WCEIR_CSL);
1181
1182 /* Clear status bits NEC_REP, BUFF, MSG_END, MATCH */
1183 wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_STS, 0x17, 0x17);
1184
1185 /* Clear BUFF_EN, Clear END_EN, Set MATCH_EN */
1186 wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_EV_EN, 0x01, 0x07);
1187
1188 /* Set CEIR_EN */
1189 wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_CTL, 0x01, 0x01);
1190
1191 } else {
1192 /* Clear BUFF_EN, Clear END_EN, Clear MATCH_EN */
1193 wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_EV_EN, 0x00, 0x07);
1194
1195 /* Clear CEIR_EN */
1196 wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_CTL, 0x00, 0x01);
1197 }
1198
1199 /* Disable interrupts */
1200 outb(WBCIR_IRQ_NONE, data->sbase + WBCIR_REG_SP3_IER);
1201 }
1202
1203 static int
1204 wbcir_suspend(struct pnp_dev *device, pm_message_t state)
1205 {
1206 wbcir_shutdown(device);
1207 return 0;
1208 }
1209
1210 static int
1211 wbcir_resume(struct pnp_dev *device)
1212 {
1213 struct wbcir_data *data = pnp_get_drvdata(device);
1214
1215 /* Clear BUFF_EN, Clear END_EN, Clear MATCH_EN */
1216 wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_EV_EN, 0x00, 0x07);
1217
1218 /* Clear CEIR_EN */
1219 wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_CTL, 0x00, 0x01);
1220
1221 /* Enable interrupts */
1222 wbcir_reset_irdata(data);
1223 outb(WBCIR_IRQ_RX | WBCIR_IRQ_ERR, data->sbase + WBCIR_REG_SP3_IER);
1224
1225 return 0;
1226 }
1227
1228
1229
1230 /*****************************************************************************
1231 *
1232 * SETUP/INIT FUNCTIONS
1233 *
1234 *****************************************************************************/
1235
1236 static void
1237 wbcir_cfg_ceir(struct wbcir_data *data)
1238 {
1239 u8 tmp;
1240
1241 /* Set PROT_SEL, RX_INV, Clear CEIR_EN (needed for the led) */
1242 tmp = protocol << 4;
1243 if (invert)
1244 tmp |= 0x08;
1245 outb(tmp, data->wbase + WBCIR_REG_WCEIR_CTL);
1246
1247 /* Clear status bits NEC_REP, BUFF, MSG_END, MATCH */
1248 wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_STS, 0x17, 0x17);
1249
1250 /* Clear BUFF_EN, Clear END_EN, Clear MATCH_EN */
1251 wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_EV_EN, 0x00, 0x07);
1252
1253 /* Set RC5 cell time to correspond to 36 kHz */
1254 wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_CFG1, 0x4A, 0x7F);
1255
1256 /* Set IRTX_INV */
1257 if (invert)
1258 outb(0x04, data->ebase + WBCIR_REG_ECEIR_CCTL);
1259 else
1260 outb(0x00, data->ebase + WBCIR_REG_ECEIR_CCTL);
1261
1262 /*
1263 * Clear IR LED, set SP3 clock to 24Mhz
1264 * set SP3_IRRX_SW to binary 01, helpfully not documented
1265 */
1266 outb(0x10, data->ebase + WBCIR_REG_ECEIR_CTS);
1267 }
1268
1269 static int __devinit
1270 wbcir_probe(struct pnp_dev *device, const struct pnp_device_id *dev_id)
1271 {
1272 struct device *dev = &device->dev;
1273 struct wbcir_data *data;
1274 int err;
1275
1276 if (!(pnp_port_len(device, 0) == EHFUNC_IOMEM_LEN &&
1277 pnp_port_len(device, 1) == WAKEUP_IOMEM_LEN &&
1278 pnp_port_len(device, 2) == SP_IOMEM_LEN)) {
1279 dev_err(dev, "Invalid resources\n");
1280 return -ENODEV;
1281 }
1282
1283 data = kzalloc(sizeof(*data), GFP_KERNEL);
1284 if (!data) {
1285 err = -ENOMEM;
1286 goto exit;
1287 }
1288
1289 pnp_set_drvdata(device, data);
1290
1291 data->ebase = pnp_port_start(device, 0);
1292 data->wbase = pnp_port_start(device, 1);
1293 data->sbase = pnp_port_start(device, 2);
1294 data->irq = pnp_irq(device, 0);
1295
1296 if (data->wbase == 0 || data->ebase == 0 ||
1297 data->sbase == 0 || data->irq == 0) {
1298 err = -ENODEV;
1299 dev_err(dev, "Invalid resources\n");
1300 goto exit_free_data;
1301 }
1302
1303 dev_dbg(&device->dev, "Found device "
1304 "(w: 0x%lX, e: 0x%lX, s: 0x%lX, i: %u)\n",
1305 data->wbase, data->ebase, data->sbase, data->irq);
1306
1307 if (!request_region(data->wbase, WAKEUP_IOMEM_LEN, DRVNAME)) {
1308 dev_err(dev, "Region 0x%lx-0x%lx already in use!\n",
1309 data->wbase, data->wbase + WAKEUP_IOMEM_LEN - 1);
1310 err = -EBUSY;
1311 goto exit_free_data;
1312 }
1313
1314 if (!request_region(data->ebase, EHFUNC_IOMEM_LEN, DRVNAME)) {
1315 dev_err(dev, "Region 0x%lx-0x%lx already in use!\n",
1316 data->ebase, data->ebase + EHFUNC_IOMEM_LEN - 1);
1317 err = -EBUSY;
1318 goto exit_release_wbase;
1319 }
1320
1321 if (!request_region(data->sbase, SP_IOMEM_LEN, DRVNAME)) {
1322 dev_err(dev, "Region 0x%lx-0x%lx already in use!\n",
1323 data->sbase, data->sbase + SP_IOMEM_LEN - 1);
1324 err = -EBUSY;
1325 goto exit_release_ebase;
1326 }
1327
1328 err = request_irq(data->irq, wbcir_irq_handler,
1329 IRQF_DISABLED, DRVNAME, device);
1330 if (err) {
1331 dev_err(dev, "Failed to claim IRQ %u\n", data->irq);
1332 err = -EBUSY;
1333 goto exit_release_sbase;
1334 }
1335
1336 led_trigger_register_simple("cir-tx", &data->txtrigger);
1337 if (!data->txtrigger) {
1338 err = -ENOMEM;
1339 goto exit_free_irq;
1340 }
1341
1342 led_trigger_register_simple("cir-rx", &data->rxtrigger);
1343 if (!data->rxtrigger) {
1344 err = -ENOMEM;
1345 goto exit_unregister_txtrigger;
1346 }
1347
1348 data->led.name = "cir::activity";
1349 data->led.default_trigger = "cir-rx";
1350 data->led.brightness_set = wbcir_led_brightness_set;
1351 data->led.brightness_get = wbcir_led_brightness_get;
1352 err = led_classdev_register(&device->dev, &data->led);
1353 if (err)
1354 goto exit_unregister_rxtrigger;
1355
1356 data->input_dev = input_allocate_device();
1357 if (!data->input_dev) {
1358 err = -ENOMEM;
1359 goto exit_unregister_led;
1360 }
1361
1362 data->input_dev->evbit[0] = BIT(EV_KEY);
1363 data->input_dev->name = WBCIR_NAME;
1364 data->input_dev->phys = "wbcir/cir0";
1365 data->input_dev->id.bustype = BUS_HOST;
1366 data->input_dev->id.vendor = PCI_VENDOR_ID_WINBOND;
1367 data->input_dev->id.product = WBCIR_ID_FAMILY;
1368 data->input_dev->id.version = WBCIR_ID_CHIP;
1369 data->input_dev->getkeycode = wbcir_getkeycode;
1370 data->input_dev->setkeycode = wbcir_setkeycode;
1371 input_set_capability(data->input_dev, EV_MSC, MSC_SCAN);
1372 input_set_drvdata(data->input_dev, data);
1373
1374 err = input_register_device(data->input_dev);
1375 if (err)
1376 goto exit_free_input;
1377
1378 data->last_scancode = INVALID_SCANCODE;
1379 INIT_LIST_HEAD(&data->keytable);
1380 setup_timer(&data->timer_keyup, wbcir_keyup, (unsigned long)data);
1381
1382 /* Load default keymaps */
1383 if (protocol == IR_PROTOCOL_RC6) {
1384 int i;
1385 for (i = 0; i < ARRAY_SIZE(rc6_def_keymap); i++) {
1386 err = wbcir_setkeycode(data->input_dev,
1387 (int)rc6_def_keymap[i].scancode,
1388 (int)rc6_def_keymap[i].keycode);
1389 if (err)
1390 goto exit_unregister_keys;
1391 }
1392 }
1393
1394 device_init_wakeup(&device->dev, 1);
1395
1396 wbcir_cfg_ceir(data);
1397
1398 /* Disable interrupts */
1399 wbcir_select_bank(data, WBCIR_BANK_0);
1400 outb(WBCIR_IRQ_NONE, data->sbase + WBCIR_REG_SP3_IER);
1401
1402 /* Enable extended mode */
1403 wbcir_select_bank(data, WBCIR_BANK_2);
1404 outb(WBCIR_EXT_ENABLE, data->sbase + WBCIR_REG_SP3_EXCR1);
1405
1406 /*
1407 * Configure baud generator, IR data will be sampled at
1408 * a bitrate of: (24Mhz * prescaler) / (divisor * 16).
1409 *
1410 * The ECIR registers include a flag to change the
1411 * 24Mhz clock freq to 48Mhz.
1412 *
1413 * It's not documented in the specs, but fifo levels
1414 * other than 16 seems to be unsupported.
1415 */
1416
1417 /* prescaler 1.0, tx/rx fifo lvl 16 */
1418 outb(0x30, data->sbase + WBCIR_REG_SP3_EXCR2);
1419
1420 /* Set baud divisor to generate one byte per bit/cell */
1421 switch (protocol) {
1422 case IR_PROTOCOL_RC5:
1423 outb(0xA7, data->sbase + WBCIR_REG_SP3_BGDL);
1424 break;
1425 case IR_PROTOCOL_RC6:
1426 outb(0x53, data->sbase + WBCIR_REG_SP3_BGDL);
1427 break;
1428 case IR_PROTOCOL_NEC:
1429 outb(0x69, data->sbase + WBCIR_REG_SP3_BGDL);
1430 break;
1431 }
1432 outb(0x00, data->sbase + WBCIR_REG_SP3_BGDH);
1433
1434 /* Set CEIR mode */
1435 wbcir_select_bank(data, WBCIR_BANK_0);
1436 outb(0xC0, data->sbase + WBCIR_REG_SP3_MCR);
1437 inb(data->sbase + WBCIR_REG_SP3_LSR); /* Clear LSR */
1438 inb(data->sbase + WBCIR_REG_SP3_MSR); /* Clear MSR */
1439
1440 /* Disable RX demod, run-length encoding/decoding, set freq span */
1441 wbcir_select_bank(data, WBCIR_BANK_7);
1442 outb(0x10, data->sbase + WBCIR_REG_SP3_RCCFG);
1443
1444 /* Disable timer */
1445 wbcir_select_bank(data, WBCIR_BANK_4);
1446 outb(0x00, data->sbase + WBCIR_REG_SP3_IRCR1);
1447
1448 /* Enable MSR interrupt, Clear AUX_IRX */
1449 wbcir_select_bank(data, WBCIR_BANK_5);
1450 outb(0x00, data->sbase + WBCIR_REG_SP3_IRCR2);
1451
1452 /* Disable CRC */
1453 wbcir_select_bank(data, WBCIR_BANK_6);
1454 outb(0x20, data->sbase + WBCIR_REG_SP3_IRCR3);
1455
1456 /* Set RX/TX (de)modulation freq, not really used */
1457 wbcir_select_bank(data, WBCIR_BANK_7);
1458 outb(0xF2, data->sbase + WBCIR_REG_SP3_IRRXDC);
1459 outb(0x69, data->sbase + WBCIR_REG_SP3_IRTXMC);
1460
1461 /* Set invert and pin direction */
1462 if (invert)
1463 outb(0x10, data->sbase + WBCIR_REG_SP3_IRCFG4);
1464 else
1465 outb(0x00, data->sbase + WBCIR_REG_SP3_IRCFG4);
1466
1467 /* Set FIFO thresholds (RX = 8, TX = 3), reset RX/TX */
1468 wbcir_select_bank(data, WBCIR_BANK_0);
1469 outb(0x97, data->sbase + WBCIR_REG_SP3_FCR);
1470
1471 /* Clear AUX status bits */
1472 outb(0xE0, data->sbase + WBCIR_REG_SP3_ASCR);
1473
1474 /* Enable interrupts */
1475 outb(WBCIR_IRQ_RX | WBCIR_IRQ_ERR, data->sbase + WBCIR_REG_SP3_IER);
1476
1477 return 0;
1478
1479 exit_unregister_keys:
1480 if (!list_empty(&data->keytable)) {
1481 struct wbcir_keyentry *key;
1482 struct wbcir_keyentry *keytmp;
1483
1484 list_for_each_entry_safe(key, keytmp, &data->keytable, list) {
1485 list_del(&key->list);
1486 kfree(key);
1487 }
1488 }
1489 input_unregister_device(data->input_dev);
1490 /* Can't call input_free_device on an unregistered device */
1491 data->input_dev = NULL;
1492 exit_free_input:
1493 input_free_device(data->input_dev);
1494 exit_unregister_led:
1495 led_classdev_unregister(&data->led);
1496 exit_unregister_rxtrigger:
1497 led_trigger_unregister_simple(data->rxtrigger);
1498 exit_unregister_txtrigger:
1499 led_trigger_unregister_simple(data->txtrigger);
1500 exit_free_irq:
1501 free_irq(data->irq, device);
1502 exit_release_sbase:
1503 release_region(data->sbase, SP_IOMEM_LEN);
1504 exit_release_ebase:
1505 release_region(data->ebase, EHFUNC_IOMEM_LEN);
1506 exit_release_wbase:
1507 release_region(data->wbase, WAKEUP_IOMEM_LEN);
1508 exit_free_data:
1509 kfree(data);
1510 pnp_set_drvdata(device, NULL);
1511 exit:
1512 return err;
1513 }
1514
1515 static void __devexit
1516 wbcir_remove(struct pnp_dev *device)
1517 {
1518 struct wbcir_data *data = pnp_get_drvdata(device);
1519 struct wbcir_keyentry *key;
1520 struct wbcir_keyentry *keytmp;
1521
1522 /* Disable interrupts */
1523 wbcir_select_bank(data, WBCIR_BANK_0);
1524 outb(WBCIR_IRQ_NONE, data->sbase + WBCIR_REG_SP3_IER);
1525
1526 del_timer_sync(&data->timer_keyup);
1527
1528 free_irq(data->irq, device);
1529
1530 /* Clear status bits NEC_REP, BUFF, MSG_END, MATCH */
1531 wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_STS, 0x17, 0x17);
1532
1533 /* Clear CEIR_EN */
1534 wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_CTL, 0x00, 0x01);
1535
1536 /* Clear BUFF_EN, END_EN, MATCH_EN */
1537 wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_EV_EN, 0x00, 0x07);
1538
1539 /* This will generate a keyup event if necessary */
1540 input_unregister_device(data->input_dev);
1541
1542 led_trigger_unregister_simple(data->rxtrigger);
1543 led_trigger_unregister_simple(data->txtrigger);
1544 led_classdev_unregister(&data->led);
1545
1546 /* This is ok since &data->led isn't actually used */
1547 wbcir_led_brightness_set(&data->led, LED_OFF);
1548
1549 release_region(data->wbase, WAKEUP_IOMEM_LEN);
1550 release_region(data->ebase, EHFUNC_IOMEM_LEN);
1551 release_region(data->sbase, SP_IOMEM_LEN);
1552
1553 list_for_each_entry_safe(key, keytmp, &data->keytable, list) {
1554 list_del(&key->list);
1555 kfree(key);
1556 }
1557
1558 kfree(data);
1559
1560 pnp_set_drvdata(device, NULL);
1561 }
1562
1563 static const struct pnp_device_id wbcir_ids[] = {
1564 { "WEC1022", 0 },
1565 { "", 0 }
1566 };
1567 MODULE_DEVICE_TABLE(pnp, wbcir_ids);
1568
1569 static struct pnp_driver wbcir_driver = {
1570 .name = WBCIR_NAME,
1571 .id_table = wbcir_ids,
1572 .probe = wbcir_probe,
1573 .remove = __devexit_p(wbcir_remove),
1574 .suspend = wbcir_suspend,
1575 .resume = wbcir_resume,
1576 .shutdown = wbcir_shutdown
1577 };
1578
1579 static int __init
1580 wbcir_init(void)
1581 {
1582 int ret;
1583
1584 switch (protocol) {
1585 case IR_PROTOCOL_RC5:
1586 case IR_PROTOCOL_NEC:
1587 case IR_PROTOCOL_RC6:
1588 break;
1589 default:
1590 printk(KERN_ERR DRVNAME ": Invalid protocol argument\n");
1591 return -EINVAL;
1592 }
1593
1594 ret = pnp_register_driver(&wbcir_driver);
1595 if (ret)
1596 printk(KERN_ERR DRVNAME ": Unable to register driver\n");
1597
1598 return ret;
1599 }
1600
1601 static void __exit
1602 wbcir_exit(void)
1603 {
1604 pnp_unregister_driver(&wbcir_driver);
1605 }
1606
1607 MODULE_AUTHOR("David Härdeman <david@hardeman.nu>");
1608 MODULE_DESCRIPTION("Winbond SuperI/O Consumer IR Driver");
1609 MODULE_LICENSE("GPL");
1610
1611 module_init(wbcir_init);
1612 module_exit(wbcir_exit);
1613
1614
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