3 * Device driver for GPIO attached remote control interfaces
4 * on Conexant 2388x based TV/DVB cards.
6 * Copyright (c) 2003 Pavel Machek
7 * Copyright (c) 2004 Gerd Knorr
8 * Copyright (c) 2004, 2005 Chris Pascoe
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.
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.
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
25 #include <linux/init.h>
26 #include <linux/hrtimer.h>
27 #include <linux/input.h>
28 #include <linux/pci.h>
29 #include <linux/slab.h>
30 #include <linux/module.h>
33 #include <media/ir-common.h>
35 /* ---------------------------------------------------------------------- */
38 struct cx88_core *core;
39 struct input_dev *input;
40 struct ir_input_state ir;
44 /* sample from gpio pin 16 */
48 unsigned long release;
50 /* poll external decoder */
61 module_param(ir_debug, int, 0644); /* debug level [IR] */
62 MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
64 #define ir_dprintk(fmt, arg...) if (ir_debug) \
65 printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg)
67 /* ---------------------------------------------------------------------- */
69 static void cx88_ir_handle_key(struct cx88_IR *ir)
71 struct cx88_core *core = ir->core;
72 u32 gpio, data, auxgpio;
75 gpio = cx_read(ir->gpio_addr);
76 switch (core->boardnr) {
77 case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
78 /* This board apparently uses a combination of 2 GPIO
79 to represent the keys. Additionally, the second GPIO
80 can be used for parity.
85 gpio = 0x758, auxgpio = 0xe5 or 0xf5
87 gpio = 0x758, auxgpio = 0xed or 0xfd
90 auxgpio = cx_read(MO_GP1_IO);
91 /* Take out the parity part */
92 gpio=(gpio & 0x7fd) + (auxgpio & 0xef);
94 case CX88_BOARD_WINFAST_DTV1000:
95 case CX88_BOARD_WINFAST_DTV1800H:
96 case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
97 gpio = (gpio & 0x6ff) | ((cx_read(MO_GP1_IO) << 8) & 0x900);
104 if (ir->last_gpio == auxgpio)
106 ir->last_gpio = auxgpio;
110 data = ir_extract_bits(gpio, ir->mask_keycode);
111 ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n",
113 ir->polling ? "poll" : "irq",
114 (gpio & ir->mask_keydown) ? " down" : "",
115 (gpio & ir->mask_keyup) ? " up" : "");
117 if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) {
118 u32 gpio_key = cx_read(MO_GP0_IO);
120 data = (data << 4) | ((gpio_key & 0xf0) >> 4);
122 ir_input_keydown(ir->input, &ir->ir, data);
123 ir_input_nokey(ir->input, &ir->ir);
125 } else if (ir->mask_keydown) {
126 /* bit set on keydown */
127 if (gpio & ir->mask_keydown) {
128 ir_input_keydown(ir->input, &ir->ir, data);
130 ir_input_nokey(ir->input, &ir->ir);
133 } else if (ir->mask_keyup) {
134 /* bit cleared on keydown */
135 if (0 == (gpio & ir->mask_keyup)) {
136 ir_input_keydown(ir->input, &ir->ir, data);
138 ir_input_nokey(ir->input, &ir->ir);
142 /* can't distinguish keydown/up :-/ */
143 ir_input_keydown(ir->input, &ir->ir, data);
144 ir_input_nokey(ir->input, &ir->ir);
148 static enum hrtimer_restart cx88_ir_work(struct hrtimer *timer)
150 unsigned long missed;
151 struct cx88_IR *ir = container_of(timer, struct cx88_IR, timer);
153 cx88_ir_handle_key(ir);
154 missed = hrtimer_forward_now(&ir->timer,
155 ktime_set(0, ir->polling * 1000000));
157 ir_dprintk("Missed ticks %ld\n", missed - 1);
159 return HRTIMER_RESTART;
162 void cx88_ir_start(struct cx88_core *core, struct cx88_IR *ir)
165 hrtimer_init(&ir->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
166 ir->timer.function = cx88_ir_work;
167 hrtimer_start(&ir->timer,
168 ktime_set(0, ir->polling * 1000000),
172 core->pci_irqmask |= PCI_INT_IR_SMPINT;
173 cx_write(MO_DDS_IO, 0xa80a80); /* 4 kHz sample rate */
174 cx_write(MO_DDSCFG_IO, 0x5); /* enable */
178 void cx88_ir_stop(struct cx88_core *core, struct cx88_IR *ir)
181 cx_write(MO_DDSCFG_IO, 0x0);
182 core->pci_irqmask &= ~PCI_INT_IR_SMPINT;
186 hrtimer_cancel(&ir->timer);
189 /* ---------------------------------------------------------------------- */
191 int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
194 struct input_dev *input_dev;
195 struct ir_scancode_table *ir_codes = NULL;
196 u64 ir_type = IR_TYPE_OTHER;
199 ir = kzalloc(sizeof(*ir), GFP_KERNEL);
200 input_dev = input_allocate_device();
201 if (!ir || !input_dev)
204 ir->input = input_dev;
206 /* detect & configure */
207 switch (core->boardnr) {
208 case CX88_BOARD_DNTV_LIVE_DVB_T:
209 case CX88_BOARD_KWORLD_DVB_T:
210 case CX88_BOARD_KWORLD_DVB_T_CX22702:
211 ir_codes = &ir_codes_dntv_live_dvb_t_table;
212 ir->gpio_addr = MO_GP1_IO;
213 ir->mask_keycode = 0x1f;
214 ir->mask_keyup = 0x60;
215 ir->polling = 50; /* ms */
217 case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
218 ir_codes = &ir_codes_cinergy_1400_table;
219 ir_type = IR_TYPE_PD;
220 ir->sampling = 0xeb04; /* address */
222 case CX88_BOARD_HAUPPAUGE:
223 case CX88_BOARD_HAUPPAUGE_DVB_T1:
224 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
225 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
226 case CX88_BOARD_HAUPPAUGE_HVR1100:
227 case CX88_BOARD_HAUPPAUGE_HVR3000:
228 case CX88_BOARD_HAUPPAUGE_HVR4000:
229 case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
230 case CX88_BOARD_PCHDTV_HD3000:
231 case CX88_BOARD_PCHDTV_HD5500:
232 case CX88_BOARD_HAUPPAUGE_IRONLY:
233 ir_codes = &ir_codes_hauppauge_new_table;
234 ir_type = IR_TYPE_RC5;
237 case CX88_BOARD_WINFAST_DTV2000H:
238 case CX88_BOARD_WINFAST_DTV2000H_J:
239 case CX88_BOARD_WINFAST_DTV1800H:
240 ir_codes = &ir_codes_winfast_table;
241 ir->gpio_addr = MO_GP0_IO;
242 ir->mask_keycode = 0x8f8;
243 ir->mask_keyup = 0x100;
244 ir->polling = 50; /* ms */
246 case CX88_BOARD_WINFAST2000XP_EXPERT:
247 case CX88_BOARD_WINFAST_DTV1000:
248 case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
249 ir_codes = &ir_codes_winfast_table;
250 ir->gpio_addr = MO_GP0_IO;
251 ir->mask_keycode = 0x8f8;
252 ir->mask_keyup = 0x100;
253 ir->polling = 1; /* ms */
255 case CX88_BOARD_IODATA_GVBCTV7E:
256 ir_codes = &ir_codes_iodata_bctv7e_table;
257 ir->gpio_addr = MO_GP0_IO;
258 ir->mask_keycode = 0xfd;
259 ir->mask_keydown = 0x02;
260 ir->polling = 5; /* ms */
262 case CX88_BOARD_PROLINK_PLAYTVPVR:
263 case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
264 ir_codes = &ir_codes_pixelview_table;
265 ir->gpio_addr = MO_GP1_IO;
266 ir->mask_keycode = 0x1f;
267 ir->mask_keyup = 0x80;
268 ir->polling = 1; /* ms */
270 case CX88_BOARD_PROLINK_PV_8000GT:
271 case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
272 ir_codes = &ir_codes_pixelview_new_table;
273 ir->gpio_addr = MO_GP1_IO;
274 ir->mask_keycode = 0x3f;
275 ir->mask_keyup = 0x80;
276 ir->polling = 1; /* ms */
278 case CX88_BOARD_KWORLD_LTV883:
279 ir_codes = &ir_codes_pixelview_table;
280 ir->gpio_addr = MO_GP1_IO;
281 ir->mask_keycode = 0x1f;
282 ir->mask_keyup = 0x60;
283 ir->polling = 1; /* ms */
285 case CX88_BOARD_ADSTECH_DVB_T_PCI:
286 ir_codes = &ir_codes_adstech_dvb_t_pci_table;
287 ir->gpio_addr = MO_GP1_IO;
288 ir->mask_keycode = 0xbf;
289 ir->mask_keyup = 0x40;
290 ir->polling = 50; /* ms */
292 case CX88_BOARD_MSI_TVANYWHERE_MASTER:
293 ir_codes = &ir_codes_msi_tvanywhere_table;
294 ir->gpio_addr = MO_GP1_IO;
295 ir->mask_keycode = 0x1f;
296 ir->mask_keyup = 0x40;
297 ir->polling = 1; /* ms */
299 case CX88_BOARD_AVERTV_303:
300 case CX88_BOARD_AVERTV_STUDIO_303:
301 ir_codes = &ir_codes_avertv_303_table;
302 ir->gpio_addr = MO_GP2_IO;
303 ir->mask_keycode = 0xfb;
304 ir->mask_keydown = 0x02;
305 ir->polling = 50; /* ms */
307 case CX88_BOARD_OMICOM_SS4_PCI:
308 case CX88_BOARD_SATTRADE_ST4200:
309 case CX88_BOARD_TBS_8920:
310 case CX88_BOARD_TBS_8910:
311 case CX88_BOARD_PROF_7300:
312 case CX88_BOARD_PROF_7301:
313 case CX88_BOARD_PROF_6200:
314 ir_codes = &ir_codes_tbs_nec_table;
315 ir_type = IR_TYPE_PD;
316 ir->sampling = 0xff00; /* address */
318 case CX88_BOARD_TEVII_S460:
319 case CX88_BOARD_TEVII_S420:
320 ir_codes = &ir_codes_tevii_nec_table;
321 ir_type = IR_TYPE_PD;
322 ir->sampling = 0xff00; /* address */
324 case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
325 ir_codes = &ir_codes_dntv_live_dvbt_pro_table;
326 ir_type = IR_TYPE_PD;
327 ir->sampling = 0xff00; /* address */
329 case CX88_BOARD_NORWOOD_MICRO:
330 ir_codes = &ir_codes_norwood_table;
331 ir->gpio_addr = MO_GP1_IO;
332 ir->mask_keycode = 0x0e;
333 ir->mask_keyup = 0x80;
334 ir->polling = 50; /* ms */
336 case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
337 ir_codes = &ir_codes_npgtech_table;
338 ir->gpio_addr = MO_GP0_IO;
339 ir->mask_keycode = 0xfa;
340 ir->polling = 50; /* ms */
342 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
343 ir_codes = &ir_codes_pinnacle_pctv_hd_table;
344 ir_type = IR_TYPE_RC5;
347 case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
348 ir_codes = &ir_codes_powercolor_real_angel_table;
349 ir->gpio_addr = MO_GP2_IO;
350 ir->mask_keycode = 0x7e;
351 ir->polling = 100; /* ms */
355 if (NULL == ir_codes) {
360 /* init input device */
361 snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
362 snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
364 err = ir_input_init(input_dev, &ir->ir, ir_type);
368 input_dev->name = ir->name;
369 input_dev->phys = ir->phys;
370 input_dev->id.bustype = BUS_PCI;
371 input_dev->id.version = 1;
372 if (pci->subsystem_vendor) {
373 input_dev->id.vendor = pci->subsystem_vendor;
374 input_dev->id.product = pci->subsystem_device;
376 input_dev->id.vendor = pci->vendor;
377 input_dev->id.product = pci->device;
379 input_dev->dev.parent = &pci->dev;
380 /* record handles to ourself */
384 cx88_ir_start(core, ir);
387 err = ir_input_register(ir->input, ir_codes, NULL);
394 cx88_ir_stop(core, ir);
401 int cx88_ir_fini(struct cx88_core *core)
403 struct cx88_IR *ir = core->ir;
405 /* skip detach on non attached boards */
409 cx88_ir_stop(core, ir);
410 ir_input_unregister(ir->input);
418 /* ---------------------------------------------------------------------- */
420 void cx88_ir_irq(struct cx88_core *core)
422 struct cx88_IR *ir = core->ir;
424 int i, start, range, toggle, dev, code;
431 samples = cx_read(MO_SAMPLE_IO);
432 if (0 != samples && 0xffffffff != samples) {
433 /* record sample data */
434 if (ir->scount < ARRAY_SIZE(ir->samples))
435 ir->samples[ir->scount++] = samples;
439 /* nothing to sample */
440 if (ir->ir.keypressed && time_after(jiffies, ir->release))
441 ir_input_nokey(ir->input, &ir->ir);
445 /* have a complete sample */
446 if (ir->scount < ARRAY_SIZE(ir->samples))
447 ir->samples[ir->scount++] = samples;
448 for (i = 0; i < ir->scount; i++)
449 ir->samples[i] = ~ir->samples[i];
451 ir_dump_samples(ir->samples, ir->scount);
454 switch (core->boardnr) {
455 case CX88_BOARD_TEVII_S460:
456 case CX88_BOARD_TEVII_S420:
457 case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
458 case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
459 case CX88_BOARD_OMICOM_SS4_PCI:
460 case CX88_BOARD_SATTRADE_ST4200:
461 case CX88_BOARD_TBS_8920:
462 case CX88_BOARD_TBS_8910:
463 case CX88_BOARD_PROF_7300:
464 case CX88_BOARD_PROF_7301:
465 case CX88_BOARD_PROF_6200:
466 ircode = ir_decode_pulsedistance(ir->samples, ir->scount, 1, 4);
468 if (ircode == 0xffffffff) { /* decoding error */
469 ir_dprintk("pulse distance decoding error\n");
473 ir_dprintk("pulse distance decoded: %x\n", ircode);
475 if (ircode == 0) { /* key still pressed */
476 ir_dprintk("pulse distance decoded repeat code\n");
477 ir->release = jiffies + msecs_to_jiffies(120);
481 if ((ircode & 0xffff) != (ir->sampling & 0xffff)) { /* wrong address */
482 ir_dprintk("pulse distance decoded wrong address\n");
486 if (((~ircode >> 24) & 0xff) != ((ircode >> 16) & 0xff)) { /* wrong checksum */
487 ir_dprintk("pulse distance decoded wrong check sum\n");
491 ir_dprintk("Key Code: %x\n", (ircode >> 16) & 0x7f);
493 ir_input_keydown(ir->input, &ir->ir, (ircode >> 16) & 0x7f);
494 ir->release = jiffies + msecs_to_jiffies(120);
496 case CX88_BOARD_HAUPPAUGE:
497 case CX88_BOARD_HAUPPAUGE_DVB_T1:
498 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
499 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
500 case CX88_BOARD_HAUPPAUGE_HVR1100:
501 case CX88_BOARD_HAUPPAUGE_HVR3000:
502 case CX88_BOARD_HAUPPAUGE_HVR4000:
503 case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
504 case CX88_BOARD_PCHDTV_HD3000:
505 case CX88_BOARD_PCHDTV_HD5500:
506 case CX88_BOARD_HAUPPAUGE_IRONLY:
507 ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
508 ir_dprintk("biphase decoded: %x\n", ircode);
510 * RC5 has an extension bit which adds a new range
511 * of available codes, this is detected here. Also
512 * hauppauge remotes (black/silver) always use
513 * specific device ids. If we do not filter the
514 * device ids then messages destined for devices
515 * such as TVs (id=0) will get through to the
516 * device causing mis-fired events.
518 /* split rc5 data block ... */
519 start = (ircode & 0x2000) >> 13;
520 range = (ircode & 0x1000) >> 12;
521 toggle= (ircode & 0x0800) >> 11;
522 dev = (ircode & 0x07c0) >> 6;
523 code = (ircode & 0x003f) | ((range << 6) ^ 0x0040);
527 if ( dev != 0x1e && dev != 0x1f )
528 /* not a hauppauge remote */
530 ir_input_keydown(ir->input, &ir->ir, code);
531 ir->release = jiffies + msecs_to_jiffies(120);
533 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
534 ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
535 ir_dprintk("biphase decoded: %x\n", ircode);
536 if ((ircode & 0xfffff000) != 0x3000)
538 ir_input_keydown(ir->input, &ir->ir, ircode & 0x3f);
539 ir->release = jiffies + msecs_to_jiffies(120);
547 /* ---------------------------------------------------------------------- */
549 MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
550 MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
551 MODULE_LICENSE("GPL");