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");