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[ARM] pxa: Gumstix Verdex PCMCIA support
[linux-2.6/verdex.git] / drivers / media / video / cx88 / cx88-input.c
blob78b3635178afe33584256e516211acbf60555a30
1 /*
2 *
3 * Device driver for GPIO attached remote control interfaces
4 * on Conexant 2388x based TV/DVB cards.
5 *
6 * Copyright (c) 2003 Pavel Machek
7 * Copyright (c) 2004 Gerd Knorr
8 * Copyright (c) 2004, 2005 Chris Pascoe
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 */
24
25 #include <linux/init.h>
26 #include <linux/hrtimer.h>
27 #include <linux/input.h>
28 #include <linux/pci.h>
29 #include <linux/module.h>
30
31 #include "cx88.h"
32 #include <media/ir-common.h>
33
34 /* ---------------------------------------------------------------------- */
35
36 struct cx88_IR {
37 struct cx88_core *core;
38 struct input_dev *input;
39 struct ir_input_state ir;
40 char name[32];
41 char phys[32];
42
43 /* sample from gpio pin 16 */
44 u32 sampling;
45 u32 samples[16];
46 int scount;
47 unsigned long release;
48
49 /* poll external decoder */
50 int polling;
51 struct hrtimer timer;
52 u32 gpio_addr;
53 u32 last_gpio;
54 u32 mask_keycode;
55 u32 mask_keydown;
56 u32 mask_keyup;
57 };
58
59 static int ir_debug;
60 module_param(ir_debug, int, 0644); /* debug level [IR] */
61 MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
62
63 #define ir_dprintk(fmt, arg...) if (ir_debug) \
64 printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg)
65
66 /* ---------------------------------------------------------------------- */
67
68 static void cx88_ir_handle_key(struct cx88_IR *ir)
69 {
70 struct cx88_core *core = ir->core;
71 u32 gpio, data, auxgpio;
72
73 /* read gpio value */
74 gpio = cx_read(ir->gpio_addr);
75 switch (core->boardnr) {
76 case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
77 /* This board apparently uses a combination of 2 GPIO
78 to represent the keys. Additionally, the second GPIO
79 can be used for parity.
80
81 Example:
82
83 for key "5"
84 gpio = 0x758, auxgpio = 0xe5 or 0xf5
85 for key "Power"
86 gpio = 0x758, auxgpio = 0xed or 0xfd
87 */
88
89 auxgpio = cx_read(MO_GP1_IO);
90 /* Take out the parity part */
91 gpio=(gpio & 0x7fd) + (auxgpio & 0xef);
92 break;
93 case CX88_BOARD_WINFAST_DTV1000:
94 case CX88_BOARD_WINFAST_DTV1800H:
95 case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
96 gpio = (gpio & 0x6ff) | ((cx_read(MO_GP1_IO) << 8) & 0x900);
97 auxgpio = gpio;
98 break;
99 default:
100 auxgpio = gpio;
101 }
102 if (ir->polling) {
103 if (ir->last_gpio == auxgpio)
104 return;
105 ir->last_gpio = auxgpio;
106 }
107
108 /* extract data */
109 data = ir_extract_bits(gpio, ir->mask_keycode);
110 ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n",
111 gpio, data,
112 ir->polling ? "poll" : "irq",
113 (gpio & ir->mask_keydown) ? " down" : "",
114 (gpio & ir->mask_keyup) ? " up" : "");
115
116 if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) {
117 u32 gpio_key = cx_read(MO_GP0_IO);
118
119 data = (data << 4) | ((gpio_key & 0xf0) >> 4);
120
121 ir_input_keydown(ir->input, &ir->ir, data, data);
122 ir_input_nokey(ir->input, &ir->ir);
123
124 } else if (ir->mask_keydown) {
125 /* bit set on keydown */
126 if (gpio & ir->mask_keydown) {
127 ir_input_keydown(ir->input, &ir->ir, data, data);
128 } else {
129 ir_input_nokey(ir->input, &ir->ir);
130 }
131
132 } else if (ir->mask_keyup) {
133 /* bit cleared on keydown */
134 if (0 == (gpio & ir->mask_keyup)) {
135 ir_input_keydown(ir->input, &ir->ir, data, data);
136 } else {
137 ir_input_nokey(ir->input, &ir->ir);
138 }
139
140 } else {
141 /* can't distinguish keydown/up :-/ */
142 ir_input_keydown(ir->input, &ir->ir, data, data);
143 ir_input_nokey(ir->input, &ir->ir);
144 }
145 }
146
147 static enum hrtimer_restart cx88_ir_work(struct hrtimer *timer)
148 {
149 unsigned long missed;
150 struct cx88_IR *ir = container_of(timer, struct cx88_IR, timer);
151
152 cx88_ir_handle_key(ir);
153 missed = hrtimer_forward_now(&ir->timer,
154 ktime_set(0, ir->polling * 1000000));
155 if (missed > 1)
156 ir_dprintk("Missed ticks %ld\n", missed - 1);
157
158 return HRTIMER_RESTART;
159 }
160
161 void cx88_ir_start(struct cx88_core *core, struct cx88_IR *ir)
162 {
163 if (ir->polling) {
164 hrtimer_init(&ir->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
165 ir->timer.function = cx88_ir_work;
166 hrtimer_start(&ir->timer,
167 ktime_set(0, ir->polling * 1000000),
168 HRTIMER_MODE_REL);
169 }
170 if (ir->sampling) {
171 core->pci_irqmask |= PCI_INT_IR_SMPINT;
172 cx_write(MO_DDS_IO, 0xa80a80); /* 4 kHz sample rate */
173 cx_write(MO_DDSCFG_IO, 0x5); /* enable */
174 }
175 }
176
177 void cx88_ir_stop(struct cx88_core *core, struct cx88_IR *ir)
178 {
179 if (ir->sampling) {
180 cx_write(MO_DDSCFG_IO, 0x0);
181 core->pci_irqmask &= ~PCI_INT_IR_SMPINT;
182 }
183
184 if (ir->polling)
185 hrtimer_cancel(&ir->timer);
186 }
187
188 /* ---------------------------------------------------------------------- */
189
190 int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
191 {
192 struct cx88_IR *ir;
193 struct input_dev *input_dev;
194 struct ir_scancode_table *ir_codes = NULL;
195 int ir_type = IR_TYPE_OTHER;
196 int err = -ENOMEM;
197
198 ir = kzalloc(sizeof(*ir), GFP_KERNEL);
199 input_dev = input_allocate_device();
200 if (!ir || !input_dev)
201 goto err_out_free;
202
203 ir->input = input_dev;
204
205 /* detect & configure */
206 switch (core->boardnr) {
207 case CX88_BOARD_DNTV_LIVE_DVB_T:
208 case CX88_BOARD_KWORLD_DVB_T:
209 case CX88_BOARD_KWORLD_DVB_T_CX22702:
210 ir_codes = &ir_codes_dntv_live_dvb_t_table;
211 ir->gpio_addr = MO_GP1_IO;
212 ir->mask_keycode = 0x1f;
213 ir->mask_keyup = 0x60;
214 ir->polling = 50; /* ms */
215 break;
216 case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
217 ir_codes = &ir_codes_cinergy_1400_table;
218 ir_type = IR_TYPE_PD;
219 ir->sampling = 0xeb04; /* address */
220 break;
221 case CX88_BOARD_HAUPPAUGE:
222 case CX88_BOARD_HAUPPAUGE_DVB_T1:
223 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
224 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
225 case CX88_BOARD_HAUPPAUGE_HVR1100:
226 case CX88_BOARD_HAUPPAUGE_HVR3000:
227 case CX88_BOARD_HAUPPAUGE_HVR4000:
228 case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
229 case CX88_BOARD_PCHDTV_HD3000:
230 case CX88_BOARD_PCHDTV_HD5500:
231 case CX88_BOARD_HAUPPAUGE_IRONLY:
232 ir_codes = &ir_codes_hauppauge_new_table;
233 ir_type = IR_TYPE_RC5;
234 ir->sampling = 1;
235 break;
236 case CX88_BOARD_WINFAST_DTV2000H:
237 case CX88_BOARD_WINFAST_DTV2000H_J:
238 case CX88_BOARD_WINFAST_DTV1800H:
239 ir_codes = &ir_codes_winfast_table;
240 ir->gpio_addr = MO_GP0_IO;
241 ir->mask_keycode = 0x8f8;
242 ir->mask_keyup = 0x100;
243 ir->polling = 50; /* ms */
244 break;
245 case CX88_BOARD_WINFAST2000XP_EXPERT:
246 case CX88_BOARD_WINFAST_DTV1000:
247 case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
248 ir_codes = &ir_codes_winfast_table;
249 ir->gpio_addr = MO_GP0_IO;
250 ir->mask_keycode = 0x8f8;
251 ir->mask_keyup = 0x100;
252 ir->polling = 1; /* ms */
253 break;
254 case CX88_BOARD_IODATA_GVBCTV7E:
255 ir_codes = &ir_codes_iodata_bctv7e_table;
256 ir->gpio_addr = MO_GP0_IO;
257 ir->mask_keycode = 0xfd;
258 ir->mask_keydown = 0x02;
259 ir->polling = 5; /* ms */
260 break;
261 case CX88_BOARD_PROLINK_PLAYTVPVR:
262 case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
263 ir_codes = &ir_codes_pixelview_table;
264 ir->gpio_addr = MO_GP1_IO;
265 ir->mask_keycode = 0x1f;
266 ir->mask_keyup = 0x80;
267 ir->polling = 1; /* ms */
268 break;
269 case CX88_BOARD_PROLINK_PV_8000GT:
270 case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
271 ir_codes = &ir_codes_pixelview_new_table;
272 ir->gpio_addr = MO_GP1_IO;
273 ir->mask_keycode = 0x3f;
274 ir->mask_keyup = 0x80;
275 ir->polling = 1; /* ms */
276 break;
277 case CX88_BOARD_KWORLD_LTV883:
278 ir_codes = &ir_codes_pixelview_table;
279 ir->gpio_addr = MO_GP1_IO;
280 ir->mask_keycode = 0x1f;
281 ir->mask_keyup = 0x60;
282 ir->polling = 1; /* ms */
283 break;
284 case CX88_BOARD_ADSTECH_DVB_T_PCI:
285 ir_codes = &ir_codes_adstech_dvb_t_pci_table;
286 ir->gpio_addr = MO_GP1_IO;
287 ir->mask_keycode = 0xbf;
288 ir->mask_keyup = 0x40;
289 ir->polling = 50; /* ms */
290 break;
291 case CX88_BOARD_MSI_TVANYWHERE_MASTER:
292 ir_codes = &ir_codes_msi_tvanywhere_table;
293 ir->gpio_addr = MO_GP1_IO;
294 ir->mask_keycode = 0x1f;
295 ir->mask_keyup = 0x40;
296 ir->polling = 1; /* ms */
297 break;
298 case CX88_BOARD_AVERTV_303:
299 case CX88_BOARD_AVERTV_STUDIO_303:
300 ir_codes = &ir_codes_avertv_303_table;
301 ir->gpio_addr = MO_GP2_IO;
302 ir->mask_keycode = 0xfb;
303 ir->mask_keydown = 0x02;
304 ir->polling = 50; /* ms */
305 break;
306 case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
307 ir_codes = &ir_codes_dntv_live_dvbt_pro_table;
308 ir_type = IR_TYPE_PD;
309 ir->sampling = 0xff00; /* address */
310 break;
311 case CX88_BOARD_NORWOOD_MICRO:
312 ir_codes = &ir_codes_norwood_table;
313 ir->gpio_addr = MO_GP1_IO;
314 ir->mask_keycode = 0x0e;
315 ir->mask_keyup = 0x80;
316 ir->polling = 50; /* ms */
317 break;
318 case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
319 ir_codes = &ir_codes_npgtech_table;
320 ir->gpio_addr = MO_GP0_IO;
321 ir->mask_keycode = 0xfa;
322 ir->polling = 50; /* ms */
323 break;
324 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
325 ir_codes = &ir_codes_pinnacle_pctv_hd_table;
326 ir_type = IR_TYPE_RC5;
327 ir->sampling = 1;
328 break;
329 case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
330 ir_codes = &ir_codes_powercolor_real_angel_table;
331 ir->gpio_addr = MO_GP2_IO;
332 ir->mask_keycode = 0x7e;
333 ir->polling = 100; /* ms */
334 break;
335 }
336
337 if (NULL == ir_codes) {
338 err = -ENODEV;
339 goto err_out_free;
340 }
341
342 /* init input device */
343 snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
344 snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
345
346 ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
347 input_dev->name = ir->name;
348 input_dev->phys = ir->phys;
349 input_dev->id.bustype = BUS_PCI;
350 input_dev->id.version = 1;
351 if (pci->subsystem_vendor) {
352 input_dev->id.vendor = pci->subsystem_vendor;
353 input_dev->id.product = pci->subsystem_device;
354 } else {
355 input_dev->id.vendor = pci->vendor;
356 input_dev->id.product = pci->device;
357 }
358 input_dev->dev.parent = &pci->dev;
359 /* record handles to ourself */
360 ir->core = core;
361 core->ir = ir;
362
363 cx88_ir_start(core, ir);
364
365 /* all done */
366 err = input_register_device(ir->input);
367 if (err)
368 goto err_out_stop;
369
370 return 0;
371
372 err_out_stop:
373 cx88_ir_stop(core, ir);
374 core->ir = NULL;
375 err_out_free:
376 input_free_device(input_dev);
377 kfree(ir);
378 return err;
379 }
380
381 int cx88_ir_fini(struct cx88_core *core)
382 {
383 struct cx88_IR *ir = core->ir;
384
385 /* skip detach on non attached boards */
386 if (NULL == ir)
387 return 0;
388
389 cx88_ir_stop(core, ir);
390 input_unregister_device(ir->input);
391 kfree(ir);
392
393 /* done */
394 core->ir = NULL;
395 return 0;
396 }
397
398 /* ---------------------------------------------------------------------- */
399
400 void cx88_ir_irq(struct cx88_core *core)
401 {
402 struct cx88_IR *ir = core->ir;
403 u32 samples, ircode;
404 int i, start, range, toggle, dev, code;
405
406 if (NULL == ir)
407 return;
408 if (!ir->sampling)
409 return;
410
411 samples = cx_read(MO_SAMPLE_IO);
412 if (0 != samples && 0xffffffff != samples) {
413 /* record sample data */
414 if (ir->scount < ARRAY_SIZE(ir->samples))
415 ir->samples[ir->scount++] = samples;
416 return;
417 }
418 if (!ir->scount) {
419 /* nothing to sample */
420 if (ir->ir.keypressed && time_after(jiffies, ir->release))
421 ir_input_nokey(ir->input, &ir->ir);
422 return;
423 }
424
425 /* have a complete sample */
426 if (ir->scount < ARRAY_SIZE(ir->samples))
427 ir->samples[ir->scount++] = samples;
428 for (i = 0; i < ir->scount; i++)
429 ir->samples[i] = ~ir->samples[i];
430 if (ir_debug)
431 ir_dump_samples(ir->samples, ir->scount);
432
433 /* decode it */
434 switch (core->boardnr) {
435 case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
436 case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
437 ircode = ir_decode_pulsedistance(ir->samples, ir->scount, 1, 4);
438
439 if (ircode == 0xffffffff) { /* decoding error */
440 ir_dprintk("pulse distance decoding error\n");
441 break;
442 }
443
444 ir_dprintk("pulse distance decoded: %x\n", ircode);
445
446 if (ircode == 0) { /* key still pressed */
447 ir_dprintk("pulse distance decoded repeat code\n");
448 ir->release = jiffies + msecs_to_jiffies(120);
449 break;
450 }
451
452 if ((ircode & 0xffff) != (ir->sampling & 0xffff)) { /* wrong address */
453 ir_dprintk("pulse distance decoded wrong address\n");
454 break;
455 }
456
457 if (((~ircode >> 24) & 0xff) != ((ircode >> 16) & 0xff)) { /* wrong checksum */
458 ir_dprintk("pulse distance decoded wrong check sum\n");
459 break;
460 }
461
462 ir_dprintk("Key Code: %x\n", (ircode >> 16) & 0x7f);
463
464 ir_input_keydown(ir->input, &ir->ir, (ircode >> 16) & 0x7f, (ircode >> 16) & 0xff);
465 ir->release = jiffies + msecs_to_jiffies(120);
466 break;
467 case CX88_BOARD_HAUPPAUGE:
468 case CX88_BOARD_HAUPPAUGE_DVB_T1:
469 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
470 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
471 case CX88_BOARD_HAUPPAUGE_HVR1100:
472 case CX88_BOARD_HAUPPAUGE_HVR3000:
473 case CX88_BOARD_HAUPPAUGE_HVR4000:
474 case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
475 case CX88_BOARD_PCHDTV_HD3000:
476 case CX88_BOARD_PCHDTV_HD5500:
477 case CX88_BOARD_HAUPPAUGE_IRONLY:
478 ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
479 ir_dprintk("biphase decoded: %x\n", ircode);
480 /*
481 * RC5 has an extension bit which adds a new range
482 * of available codes, this is detected here. Also
483 * hauppauge remotes (black/silver) always use
484 * specific device ids. If we do not filter the
485 * device ids then messages destined for devices
486 * such as TVs (id=0) will get through to the
487 * device causing mis-fired events.
488 */
489 /* split rc5 data block ... */
490 start = (ircode & 0x2000) >> 13;
491 range = (ircode & 0x1000) >> 12;
492 toggle= (ircode & 0x0800) >> 11;
493 dev = (ircode & 0x07c0) >> 6;
494 code = (ircode & 0x003f) | ((range << 6) ^ 0x0040);
495 if( start != 1)
496 /* no key pressed */
497 break;
498 if ( dev != 0x1e && dev != 0x1f )
499 /* not a hauppauge remote */
500 break;
501 ir_input_keydown(ir->input, &ir->ir, code, ircode);
502 ir->release = jiffies + msecs_to_jiffies(120);
503 break;
504 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
505 ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
506 ir_dprintk("biphase decoded: %x\n", ircode);
507 if ((ircode & 0xfffff000) != 0x3000)
508 break;
509 ir_input_keydown(ir->input, &ir->ir, ircode & 0x3f, ircode);
510 ir->release = jiffies + msecs_to_jiffies(120);
511 break;
512 }
513
514 ir->scount = 0;
515 return;
516 }
517
518 /* ---------------------------------------------------------------------- */
519
520 MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
521 MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
522 MODULE_LICENSE("GPL");
523 /*
524 * Local variables:
525 * c-basic-offset: 8
526 * End:
527 */
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