1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * |
4 | * Device driver for GPIO attached remote control interfaces |
5 | * on Conexant 2388x based TV/DVB cards. |
6 | * |
7 | * Copyright (c) 2003 Pavel Machek |
8 | * Copyright (c) 2004 Gerd Knorr |
9 | * Copyright (c) 2004, 2005 Chris Pascoe |
10 | */ |
11 | |
12 | #include "cx88.h" |
13 | |
14 | #include <linux/init.h> |
15 | #include <linux/hrtimer.h> |
16 | #include <linux/pci.h> |
17 | #include <linux/slab.h> |
18 | #include <linux/module.h> |
19 | |
20 | #include <media/rc-core.h> |
21 | |
22 | #define MODULE_NAME "cx88xx" |
23 | |
24 | /* ---------------------------------------------------------------------- */ |
25 | |
26 | struct cx88_IR { |
27 | struct cx88_core *core; |
28 | struct rc_dev *dev; |
29 | |
30 | int users; |
31 | |
32 | char name[32]; |
33 | char phys[32]; |
34 | |
35 | /* sample from gpio pin 16 */ |
36 | u32 sampling; |
37 | |
38 | /* poll external decoder */ |
39 | int polling; |
40 | struct hrtimer timer; |
41 | u32 gpio_addr; |
42 | u32 last_gpio; |
43 | u32 mask_keycode; |
44 | u32 mask_keydown; |
45 | u32 mask_keyup; |
46 | }; |
47 | |
48 | static unsigned int ir_samplerate = 4; |
49 | module_param(ir_samplerate, uint, 0444); |
50 | MODULE_PARM_DESC(ir_samplerate, "IR samplerate in kHz, 1 - 20, default 4" ); |
51 | |
52 | static int ir_debug; |
53 | module_param(ir_debug, int, 0644); /* debug level [IR] */ |
54 | MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]" ); |
55 | |
56 | #define ir_dprintk(fmt, arg...) do { \ |
57 | if (ir_debug) \ |
58 | printk(KERN_DEBUG "%s IR: " fmt, ir->core->name, ##arg);\ |
59 | } while (0) |
60 | |
61 | #define dprintk(fmt, arg...) do { \ |
62 | if (ir_debug) \ |
63 | printk(KERN_DEBUG "cx88 IR: " fmt, ##arg); \ |
64 | } while (0) |
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 | /* |
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. |
81 | * |
82 | * Example: |
83 | * |
84 | * for key "5" |
85 | * gpio = 0x758, auxgpio = 0xe5 or 0xf5 |
86 | * for key "Power" |
87 | * gpio = 0x758, auxgpio = 0xed or 0xfd |
88 | */ |
89 | |
90 | auxgpio = cx_read(MO_GP1_IO); |
91 | /* Take out the parity part */ |
92 | gpio = (gpio & 0x7fd) + (auxgpio & 0xef); |
93 | break; |
94 | case CX88_BOARD_WINFAST_DTV1000: |
95 | case CX88_BOARD_WINFAST_DTV1800H: |
96 | case CX88_BOARD_WINFAST_DTV1800H_XC4000: |
97 | case CX88_BOARD_WINFAST_DTV2000H_PLUS: |
98 | case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL: |
99 | case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F36: |
100 | case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F43: |
101 | gpio = (gpio & 0x6ff) | ((cx_read(MO_GP1_IO) << 8) & 0x900); |
102 | auxgpio = gpio; |
103 | break; |
104 | default: |
105 | auxgpio = gpio; |
106 | } |
107 | if (ir->polling) { |
108 | if (ir->last_gpio == auxgpio) |
109 | return; |
110 | ir->last_gpio = auxgpio; |
111 | } |
112 | |
113 | /* extract data */ |
114 | data = ir_extract_bits(data: gpio, mask: ir->mask_keycode); |
115 | ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n" , |
116 | gpio, data, |
117 | ir->polling ? "poll" : "irq" , |
118 | (gpio & ir->mask_keydown) ? " down" : "" , |
119 | (gpio & ir->mask_keyup) ? " up" : "" ); |
120 | |
121 | if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) { |
122 | u32 gpio_key = cx_read(MO_GP0_IO); |
123 | |
124 | data = (data << 4) | ((gpio_key & 0xf0) >> 4); |
125 | |
126 | rc_keydown(dev: ir->dev, protocol: RC_PROTO_UNKNOWN, scancode: data, toggle: 0); |
127 | |
128 | } else if (ir->core->boardnr == CX88_BOARD_PROLINK_PLAYTVPVR || |
129 | ir->core->boardnr == CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO) { |
130 | /* bit cleared on keydown, NEC scancode, 0xAAAACC, A = 0x866b */ |
131 | u16 addr; |
132 | u8 cmd; |
133 | u32 scancode; |
134 | |
135 | addr = (data >> 8) & 0xffff; |
136 | cmd = (data >> 0) & 0x00ff; |
137 | scancode = RC_SCANCODE_NECX(addr, cmd); |
138 | |
139 | if (0 == (gpio & ir->mask_keyup)) |
140 | rc_keydown_notimeout(dev: ir->dev, protocol: RC_PROTO_NECX, scancode, |
141 | toggle: 0); |
142 | else |
143 | rc_keyup(dev: ir->dev); |
144 | |
145 | } else if (ir->mask_keydown) { |
146 | /* bit set on keydown */ |
147 | if (gpio & ir->mask_keydown) |
148 | rc_keydown_notimeout(dev: ir->dev, protocol: RC_PROTO_UNKNOWN, scancode: data, |
149 | toggle: 0); |
150 | else |
151 | rc_keyup(dev: ir->dev); |
152 | |
153 | } else if (ir->mask_keyup) { |
154 | /* bit cleared on keydown */ |
155 | if (0 == (gpio & ir->mask_keyup)) |
156 | rc_keydown_notimeout(dev: ir->dev, protocol: RC_PROTO_UNKNOWN, scancode: data, |
157 | toggle: 0); |
158 | else |
159 | rc_keyup(dev: ir->dev); |
160 | |
161 | } else { |
162 | /* can't distinguish keydown/up :-/ */ |
163 | rc_keydown_notimeout(dev: ir->dev, protocol: RC_PROTO_UNKNOWN, scancode: data, toggle: 0); |
164 | rc_keyup(dev: ir->dev); |
165 | } |
166 | } |
167 | |
168 | static enum hrtimer_restart cx88_ir_work(struct hrtimer *timer) |
169 | { |
170 | u64 missed; |
171 | struct cx88_IR *ir = container_of(timer, struct cx88_IR, timer); |
172 | |
173 | cx88_ir_handle_key(ir); |
174 | missed = hrtimer_forward_now(timer: &ir->timer, |
175 | interval: ktime_set(secs: 0, nsecs: ir->polling * 1000000)); |
176 | if (missed > 1) |
177 | ir_dprintk("Missed ticks %llu\n" , missed - 1); |
178 | |
179 | return HRTIMER_RESTART; |
180 | } |
181 | |
182 | static int __cx88_ir_start(void *priv) |
183 | { |
184 | struct cx88_core *core = priv; |
185 | struct cx88_IR *ir; |
186 | |
187 | if (!core || !core->ir) |
188 | return -EINVAL; |
189 | |
190 | ir = core->ir; |
191 | |
192 | if (ir->polling) { |
193 | hrtimer_init(timer: &ir->timer, CLOCK_MONOTONIC, mode: HRTIMER_MODE_REL); |
194 | ir->timer.function = cx88_ir_work; |
195 | hrtimer_start(timer: &ir->timer, |
196 | tim: ktime_set(secs: 0, nsecs: ir->polling * 1000000), |
197 | mode: HRTIMER_MODE_REL); |
198 | } |
199 | if (ir->sampling) { |
200 | core->pci_irqmask |= PCI_INT_IR_SMPINT; |
201 | cx_write(MO_DDS_IO, 0x33F286 * ir_samplerate); /* samplerate */ |
202 | cx_write(MO_DDSCFG_IO, 0x5); /* enable */ |
203 | } |
204 | return 0; |
205 | } |
206 | |
207 | static void __cx88_ir_stop(void *priv) |
208 | { |
209 | struct cx88_core *core = priv; |
210 | struct cx88_IR *ir; |
211 | |
212 | if (!core || !core->ir) |
213 | return; |
214 | |
215 | ir = core->ir; |
216 | if (ir->sampling) { |
217 | cx_write(MO_DDSCFG_IO, 0x0); |
218 | core->pci_irqmask &= ~PCI_INT_IR_SMPINT; |
219 | } |
220 | |
221 | if (ir->polling) |
222 | hrtimer_cancel(timer: &ir->timer); |
223 | } |
224 | |
225 | int cx88_ir_start(struct cx88_core *core) |
226 | { |
227 | if (core->ir->users) |
228 | return __cx88_ir_start(priv: core); |
229 | |
230 | return 0; |
231 | } |
232 | EXPORT_SYMBOL(cx88_ir_start); |
233 | |
234 | void cx88_ir_stop(struct cx88_core *core) |
235 | { |
236 | if (core->ir->users) |
237 | __cx88_ir_stop(priv: core); |
238 | } |
239 | EXPORT_SYMBOL(cx88_ir_stop); |
240 | |
241 | static int cx88_ir_open(struct rc_dev *rc) |
242 | { |
243 | struct cx88_core *core = rc->priv; |
244 | |
245 | core->ir->users++; |
246 | return __cx88_ir_start(priv: core); |
247 | } |
248 | |
249 | static void cx88_ir_close(struct rc_dev *rc) |
250 | { |
251 | struct cx88_core *core = rc->priv; |
252 | |
253 | core->ir->users--; |
254 | if (!core->ir->users) |
255 | __cx88_ir_stop(priv: core); |
256 | } |
257 | |
258 | /* ---------------------------------------------------------------------- */ |
259 | |
260 | int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci) |
261 | { |
262 | struct cx88_IR *ir; |
263 | struct rc_dev *dev; |
264 | char *ir_codes = NULL; |
265 | u64 rc_proto = RC_PROTO_BIT_OTHER; |
266 | int err = -ENOMEM; |
267 | u32 hardware_mask = 0; /* For devices with a hardware mask, when |
268 | * used with a full-code IR table |
269 | */ |
270 | |
271 | ir = kzalloc(size: sizeof(*ir), GFP_KERNEL); |
272 | dev = rc_allocate_device(RC_DRIVER_IR_RAW); |
273 | if (!ir || !dev) |
274 | goto err_out_free; |
275 | |
276 | ir->dev = dev; |
277 | |
278 | /* detect & configure */ |
279 | switch (core->boardnr) { |
280 | case CX88_BOARD_DNTV_LIVE_DVB_T: |
281 | case CX88_BOARD_KWORLD_DVB_T: |
282 | case CX88_BOARD_KWORLD_DVB_T_CX22702: |
283 | ir_codes = RC_MAP_DNTV_LIVE_DVB_T; |
284 | ir->gpio_addr = MO_GP1_IO; |
285 | ir->mask_keycode = 0x1f; |
286 | ir->mask_keyup = 0x60; |
287 | ir->polling = 50; /* ms */ |
288 | break; |
289 | case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1: |
290 | ir_codes = RC_MAP_CINERGY_1400; |
291 | ir->sampling = 0xeb04; /* address */ |
292 | break; |
293 | case CX88_BOARD_HAUPPAUGE: |
294 | case CX88_BOARD_HAUPPAUGE_DVB_T1: |
295 | case CX88_BOARD_HAUPPAUGE_NOVASE2_S1: |
296 | case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1: |
297 | case CX88_BOARD_HAUPPAUGE_HVR1100: |
298 | case CX88_BOARD_HAUPPAUGE_HVR3000: |
299 | case CX88_BOARD_HAUPPAUGE_HVR4000: |
300 | case CX88_BOARD_HAUPPAUGE_HVR4000LITE: |
301 | case CX88_BOARD_PCHDTV_HD3000: |
302 | case CX88_BOARD_PCHDTV_HD5500: |
303 | case CX88_BOARD_HAUPPAUGE_IRONLY: |
304 | ir_codes = RC_MAP_HAUPPAUGE; |
305 | ir->sampling = 1; |
306 | break; |
307 | case CX88_BOARD_WINFAST_DTV2000H: |
308 | case CX88_BOARD_WINFAST_DTV2000H_J: |
309 | case CX88_BOARD_WINFAST_DTV1800H: |
310 | case CX88_BOARD_WINFAST_DTV1800H_XC4000: |
311 | case CX88_BOARD_WINFAST_DTV2000H_PLUS: |
312 | ir_codes = RC_MAP_WINFAST; |
313 | ir->gpio_addr = MO_GP0_IO; |
314 | ir->mask_keycode = 0x8f8; |
315 | ir->mask_keyup = 0x100; |
316 | ir->polling = 50; /* ms */ |
317 | break; |
318 | case CX88_BOARD_WINFAST2000XP_EXPERT: |
319 | case CX88_BOARD_WINFAST_DTV1000: |
320 | case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL: |
321 | case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F36: |
322 | case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F43: |
323 | ir_codes = RC_MAP_WINFAST; |
324 | ir->gpio_addr = MO_GP0_IO; |
325 | ir->mask_keycode = 0x8f8; |
326 | ir->mask_keyup = 0x100; |
327 | ir->polling = 1; /* ms */ |
328 | break; |
329 | case CX88_BOARD_IODATA_GVBCTV7E: |
330 | ir_codes = RC_MAP_IODATA_BCTV7E; |
331 | ir->gpio_addr = MO_GP0_IO; |
332 | ir->mask_keycode = 0xfd; |
333 | ir->mask_keydown = 0x02; |
334 | ir->polling = 5; /* ms */ |
335 | break; |
336 | case CX88_BOARD_PROLINK_PLAYTVPVR: |
337 | case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO: |
338 | /* |
339 | * It seems that this hardware is paired with NEC extended |
340 | * address 0x866b. So, unfortunately, its usage with other |
341 | * IR's with different address won't work. Still, there are |
342 | * other IR's from the same manufacturer that works, like the |
343 | * 002-T mini RC, provided with newer PV hardware |
344 | */ |
345 | ir_codes = RC_MAP_PIXELVIEW_MK12; |
346 | rc_proto = RC_PROTO_BIT_NECX; |
347 | ir->gpio_addr = MO_GP1_IO; |
348 | ir->mask_keyup = 0x80; |
349 | ir->polling = 10; /* ms */ |
350 | hardware_mask = 0x3f; /* Hardware returns only 6 bits from command part */ |
351 | break; |
352 | case CX88_BOARD_PROLINK_PV_8000GT: |
353 | case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME: |
354 | ir_codes = RC_MAP_PIXELVIEW_NEW; |
355 | ir->gpio_addr = MO_GP1_IO; |
356 | ir->mask_keycode = 0x3f; |
357 | ir->mask_keyup = 0x80; |
358 | ir->polling = 1; /* ms */ |
359 | break; |
360 | case CX88_BOARD_KWORLD_LTV883: |
361 | ir_codes = RC_MAP_PIXELVIEW; |
362 | ir->gpio_addr = MO_GP1_IO; |
363 | ir->mask_keycode = 0x1f; |
364 | ir->mask_keyup = 0x60; |
365 | ir->polling = 1; /* ms */ |
366 | break; |
367 | case CX88_BOARD_ADSTECH_DVB_T_PCI: |
368 | ir_codes = RC_MAP_ADSTECH_DVB_T_PCI; |
369 | ir->gpio_addr = MO_GP1_IO; |
370 | ir->mask_keycode = 0xbf; |
371 | ir->mask_keyup = 0x40; |
372 | ir->polling = 50; /* ms */ |
373 | break; |
374 | case CX88_BOARD_MSI_TVANYWHERE_MASTER: |
375 | ir_codes = RC_MAP_MSI_TVANYWHERE; |
376 | ir->gpio_addr = MO_GP1_IO; |
377 | ir->mask_keycode = 0x1f; |
378 | ir->mask_keyup = 0x40; |
379 | ir->polling = 1; /* ms */ |
380 | break; |
381 | case CX88_BOARD_AVERTV_303: |
382 | case CX88_BOARD_AVERTV_STUDIO_303: |
383 | ir_codes = RC_MAP_AVERTV_303; |
384 | ir->gpio_addr = MO_GP2_IO; |
385 | ir->mask_keycode = 0xfb; |
386 | ir->mask_keydown = 0x02; |
387 | ir->polling = 50; /* ms */ |
388 | break; |
389 | case CX88_BOARD_OMICOM_SS4_PCI: |
390 | case CX88_BOARD_SATTRADE_ST4200: |
391 | case CX88_BOARD_TBS_8920: |
392 | case CX88_BOARD_TBS_8910: |
393 | case CX88_BOARD_PROF_7300: |
394 | case CX88_BOARD_PROF_7301: |
395 | case CX88_BOARD_PROF_6200: |
396 | ir_codes = RC_MAP_TBS_NEC; |
397 | ir->sampling = 0xff00; /* address */ |
398 | break; |
399 | case CX88_BOARD_TEVII_S464: |
400 | case CX88_BOARD_TEVII_S460: |
401 | case CX88_BOARD_TEVII_S420: |
402 | ir_codes = RC_MAP_TEVII_NEC; |
403 | ir->sampling = 0xff00; /* address */ |
404 | break; |
405 | case CX88_BOARD_DNTV_LIVE_DVB_T_PRO: |
406 | ir_codes = RC_MAP_DNTV_LIVE_DVBT_PRO; |
407 | ir->sampling = 0xff00; /* address */ |
408 | break; |
409 | case CX88_BOARD_NORWOOD_MICRO: |
410 | ir_codes = RC_MAP_NORWOOD; |
411 | ir->gpio_addr = MO_GP1_IO; |
412 | ir->mask_keycode = 0x0e; |
413 | ir->mask_keyup = 0x80; |
414 | ir->polling = 50; /* ms */ |
415 | break; |
416 | case CX88_BOARD_NPGTECH_REALTV_TOP10FM: |
417 | ir_codes = RC_MAP_NPGTECH; |
418 | ir->gpio_addr = MO_GP0_IO; |
419 | ir->mask_keycode = 0xfa; |
420 | ir->polling = 50; /* ms */ |
421 | break; |
422 | case CX88_BOARD_PINNACLE_PCTV_HD_800i: |
423 | ir_codes = RC_MAP_PINNACLE_PCTV_HD; |
424 | ir->sampling = 1; |
425 | break; |
426 | case CX88_BOARD_POWERCOLOR_REAL_ANGEL: |
427 | ir_codes = RC_MAP_POWERCOLOR_REAL_ANGEL; |
428 | ir->gpio_addr = MO_GP2_IO; |
429 | ir->mask_keycode = 0x7e; |
430 | ir->polling = 100; /* ms */ |
431 | break; |
432 | case CX88_BOARD_TWINHAN_VP1027_DVBS: |
433 | ir_codes = RC_MAP_TWINHAN_VP1027_DVBS; |
434 | ir->sampling = 0xff00; /* address */ |
435 | break; |
436 | } |
437 | |
438 | if (!ir_codes) { |
439 | err = -ENODEV; |
440 | goto err_out_free; |
441 | } |
442 | |
443 | /* |
444 | * The usage of mask_keycode were very convenient, due to several |
445 | * reasons. Among others, the scancode tables were using the scancode |
446 | * as the index elements. So, the less bits it was used, the smaller |
447 | * the table were stored. After the input changes, the better is to use |
448 | * the full scancodes, since it allows replacing the IR remote by |
449 | * another one. Unfortunately, there are still some hardware, like |
450 | * Pixelview Ultra Pro, where only part of the scancode is sent via |
451 | * GPIO. So, there's no way to get the full scancode. Due to that, |
452 | * hardware_mask were introduced here: it represents those hardware |
453 | * that has such limits. |
454 | */ |
455 | if (hardware_mask && !ir->mask_keycode) |
456 | ir->mask_keycode = hardware_mask; |
457 | |
458 | /* init input device */ |
459 | snprintf(buf: ir->name, size: sizeof(ir->name), fmt: "cx88 IR (%s)" , core->board.name); |
460 | snprintf(buf: ir->phys, size: sizeof(ir->phys), fmt: "pci-%s/ir0" , pci_name(pdev: pci)); |
461 | |
462 | dev->device_name = ir->name; |
463 | dev->input_phys = ir->phys; |
464 | dev->input_id.bustype = BUS_PCI; |
465 | dev->input_id.version = 1; |
466 | if (pci->subsystem_vendor) { |
467 | dev->input_id.vendor = pci->subsystem_vendor; |
468 | dev->input_id.product = pci->subsystem_device; |
469 | } else { |
470 | dev->input_id.vendor = pci->vendor; |
471 | dev->input_id.product = pci->device; |
472 | } |
473 | dev->dev.parent = &pci->dev; |
474 | dev->map_name = ir_codes; |
475 | dev->driver_name = MODULE_NAME; |
476 | dev->priv = core; |
477 | dev->open = cx88_ir_open; |
478 | dev->close = cx88_ir_close; |
479 | dev->scancode_mask = hardware_mask; |
480 | |
481 | if (ir->sampling) { |
482 | dev->timeout = MS_TO_US(10); /* 10 ms */ |
483 | } else { |
484 | dev->driver_type = RC_DRIVER_SCANCODE; |
485 | dev->allowed_protocols = rc_proto; |
486 | } |
487 | |
488 | ir->core = core; |
489 | core->ir = ir; |
490 | |
491 | /* all done */ |
492 | err = rc_register_device(dev); |
493 | if (err) |
494 | goto err_out_free; |
495 | |
496 | return 0; |
497 | |
498 | err_out_free: |
499 | rc_free_device(dev); |
500 | core->ir = NULL; |
501 | kfree(objp: ir); |
502 | return err; |
503 | } |
504 | |
505 | int cx88_ir_fini(struct cx88_core *core) |
506 | { |
507 | struct cx88_IR *ir = core->ir; |
508 | |
509 | /* skip detach on non attached boards */ |
510 | if (!ir) |
511 | return 0; |
512 | |
513 | cx88_ir_stop(core); |
514 | rc_unregister_device(dev: ir->dev); |
515 | kfree(objp: ir); |
516 | |
517 | /* done */ |
518 | core->ir = NULL; |
519 | return 0; |
520 | } |
521 | |
522 | /* ---------------------------------------------------------------------- */ |
523 | |
524 | void cx88_ir_irq(struct cx88_core *core) |
525 | { |
526 | struct cx88_IR *ir = core->ir; |
527 | u32 samples; |
528 | unsigned int todo, bits; |
529 | struct ir_raw_event ev = {}; |
530 | |
531 | if (!ir || !ir->sampling) |
532 | return; |
533 | |
534 | /* |
535 | * Samples are stored in a 32 bit register, oldest sample in |
536 | * the msb. A set bit represents space and an unset bit |
537 | * represents a pulse. |
538 | */ |
539 | samples = cx_read(MO_SAMPLE_IO); |
540 | |
541 | if (samples == 0xff && ir->dev->idle) |
542 | return; |
543 | |
544 | for (todo = 32; todo > 0; todo -= bits) { |
545 | ev.pulse = samples & 0x80000000 ? false : true; |
546 | bits = min(todo, 32U - fls(ev.pulse ? samples : ~samples)); |
547 | ev.duration = (bits * (USEC_PER_SEC / 1000)) / ir_samplerate; |
548 | ir_raw_event_store_with_filter(dev: ir->dev, ev: &ev); |
549 | samples <<= bits; |
550 | } |
551 | ir_raw_event_handle(dev: ir->dev); |
552 | } |
553 | |
554 | static int get_key_pvr2000(struct IR_i2c *ir, enum rc_proto *protocol, |
555 | u32 *scancode, u8 *toggle) |
556 | { |
557 | int flags, code; |
558 | |
559 | /* poll IR chip */ |
560 | flags = i2c_smbus_read_byte_data(client: ir->c, command: 0x10); |
561 | if (flags < 0) { |
562 | dprintk("read error\n" ); |
563 | return 0; |
564 | } |
565 | /* key pressed ? */ |
566 | if (0 == (flags & 0x80)) |
567 | return 0; |
568 | |
569 | /* read actual key code */ |
570 | code = i2c_smbus_read_byte_data(client: ir->c, command: 0x00); |
571 | if (code < 0) { |
572 | dprintk("read error\n" ); |
573 | return 0; |
574 | } |
575 | |
576 | dprintk("IR Key/Flags: (0x%02x/0x%02x)\n" , |
577 | code & 0xff, flags & 0xff); |
578 | |
579 | *protocol = RC_PROTO_UNKNOWN; |
580 | *scancode = code & 0xff; |
581 | *toggle = 0; |
582 | return 1; |
583 | } |
584 | |
585 | void cx88_i2c_init_ir(struct cx88_core *core) |
586 | { |
587 | struct i2c_board_info info; |
588 | static const unsigned short default_addr_list[] = { |
589 | 0x18, 0x33, 0x6b, 0x71, |
590 | I2C_CLIENT_END |
591 | }; |
592 | static const unsigned short pvr2000_addr_list[] = { |
593 | 0x18, 0x1a, |
594 | I2C_CLIENT_END |
595 | }; |
596 | const unsigned short *addr_list = default_addr_list; |
597 | const unsigned short *addrp; |
598 | /* Instantiate the IR receiver device, if present */ |
599 | if (core->i2c_rc != 0) |
600 | return; |
601 | |
602 | memset(&info, 0, sizeof(struct i2c_board_info)); |
603 | strscpy(info.type, "ir_video" , I2C_NAME_SIZE); |
604 | |
605 | switch (core->boardnr) { |
606 | case CX88_BOARD_LEADTEK_PVR2000: |
607 | addr_list = pvr2000_addr_list; |
608 | core->init_data.name = "cx88 Leadtek PVR 2000 remote" ; |
609 | core->init_data.type = RC_PROTO_BIT_UNKNOWN; |
610 | core->init_data.get_key = get_key_pvr2000; |
611 | core->init_data.ir_codes = RC_MAP_EMPTY; |
612 | break; |
613 | } |
614 | |
615 | /* |
616 | * We can't call i2c_new_scanned_device() because it uses |
617 | * quick writes for probing and at least some RC receiver |
618 | * devices only reply to reads. |
619 | * Also, Hauppauge XVR needs to be specified, as address 0x71 |
620 | * conflicts with another remote type used with saa7134 |
621 | */ |
622 | for (addrp = addr_list; *addrp != I2C_CLIENT_END; addrp++) { |
623 | info.platform_data = NULL; |
624 | memset(&core->init_data, 0, sizeof(core->init_data)); |
625 | |
626 | if (*addrp == 0x71) { |
627 | /* Hauppauge Z8F0811 */ |
628 | strscpy(info.type, "ir_z8f0811_haup" , I2C_NAME_SIZE); |
629 | core->init_data.name = core->board.name; |
630 | core->init_data.ir_codes = RC_MAP_HAUPPAUGE; |
631 | core->init_data.type = RC_PROTO_BIT_RC5 | |
632 | RC_PROTO_BIT_RC6_MCE | RC_PROTO_BIT_RC6_6A_32; |
633 | core->init_data.internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR; |
634 | |
635 | info.platform_data = &core->init_data; |
636 | } |
637 | if (i2c_smbus_xfer(adapter: &core->i2c_adap, addr: *addrp, flags: 0, |
638 | I2C_SMBUS_READ, command: 0, |
639 | I2C_SMBUS_QUICK, NULL) >= 0) { |
640 | info.addr = *addrp; |
641 | i2c_new_client_device(adap: &core->i2c_adap, info: &info); |
642 | break; |
643 | } |
644 | } |
645 | } |
646 | |
647 | /* ---------------------------------------------------------------------- */ |
648 | |
649 | MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe" ); |
650 | MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls" ); |
651 | MODULE_LICENSE("GPL" ); |
652 | |