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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * |
3 | * keyboard input driver for i2c IR remote controls | |
4 | * | |
5 | * Copyright (c) 2000-2003 Gerd Knorr <kraxel@bytesex.org> | |
6 | * modified for PixelView (BT878P+W/FM) by | |
7 | * Michal Kochanowicz <mkochano@pld.org.pl> | |
8 | * Christoph Bartelmus <lirc@bartelmus.de> | |
9 | * modified for KNC ONE TV Station/Anubis Typhoon TView Tuner by | |
10 | * Ulrich Mueller <ulrich.mueller42@web.de> | |
c365864f MR |
11 | * modified for em2820 based USB TV tuners by |
12 | * Markus Rechberger <mrechberger@gmail.com> | |
d54d6980 CZ |
13 | * modified for DViCO Fusion HDTV 5 RT GOLD by |
14 | * Chaogui Zhang <czhang1974@gmail.com> | |
ba340b40 BR |
15 | * modified for MSI TV@nywhere Plus by |
16 | * Henry Wong <henry@stuffedcow.net> | |
17 | * Mark Schultz <n9xmj@yahoo.com> | |
18 | * Brian Rogers <brian_rogers@comcast.net> | |
cb3bf504 OJ |
19 | * modified for AVerMedia Cardbus by |
20 | * Oldrich Jedlicka <oldium.pro@seznam.cz> | |
1da177e4 LT |
21 | * |
22 | * This program is free software; you can redistribute it and/or modify | |
23 | * it under the terms of the GNU General Public License as published by | |
24 | * the Free Software Foundation; either version 2 of the License, or | |
25 | * (at your option) any later version. | |
26 | * | |
27 | * This program is distributed in the hope that it will be useful, | |
28 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
29 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
30 | * GNU General Public License for more details. | |
31 | * | |
32 | * You should have received a copy of the GNU General Public License | |
33 | * along with this program; if not, write to the Free Software | |
34 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
35 | * | |
36 | */ | |
37 | ||
38 | #include <linux/module.h> | |
1da177e4 LT |
39 | #include <linux/init.h> |
40 | #include <linux/kernel.h> | |
1da177e4 LT |
41 | #include <linux/string.h> |
42 | #include <linux/timer.h> | |
43 | #include <linux/delay.h> | |
44 | #include <linux/errno.h> | |
45 | #include <linux/slab.h> | |
46 | #include <linux/i2c.h> | |
47 | #include <linux/workqueue.h> | |
674434c6 | 48 | |
0dc50942 | 49 | #include <media/ir-core.h> |
d5e52653 | 50 | #include <media/ir-kbd-i2c.h> |
c365864f | 51 | |
1da177e4 LT |
52 | /* ----------------------------------------------------------------------- */ |
53 | /* insmod parameters */ | |
54 | ||
55 | static int debug; | |
56 | module_param(debug, int, 0644); /* debug level (0,1,2) */ | |
57 | ||
ff699e6b | 58 | static int hauppauge; |
bf47e4e4 A |
59 | module_param(hauppauge, int, 0644); /* Choose Hauppauge remote */ |
60 | MODULE_PARM_DESC(hauppauge, "Specify Hauppauge remote: 0=black, 1=grey (defaults to 0)"); | |
61 | ||
62 | ||
727e625c | 63 | #define MODULE_NAME "ir-kbd-i2c" |
1da177e4 | 64 | #define dprintk(level, fmt, arg...) if (debug >= level) \ |
727e625c | 65 | printk(KERN_DEBUG MODULE_NAME ": " fmt , ## arg) |
1da177e4 LT |
66 | |
67 | /* ----------------------------------------------------------------------- */ | |
68 | ||
39cf1e81 JF |
69 | static int get_key_haup_common(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw, |
70 | int size, int offset) | |
1da177e4 | 71 | { |
39cf1e81 | 72 | unsigned char buf[6]; |
34c08029 | 73 | int start, range, toggle, dev, code, ircode; |
1da177e4 LT |
74 | |
75 | /* poll IR chip */ | |
c668f32d | 76 | if (size != i2c_master_recv(ir->c, buf, size)) |
1da177e4 LT |
77 | return -EIO; |
78 | ||
79 | /* split rc5 data block ... */ | |
39cf1e81 JF |
80 | start = (buf[offset] >> 7) & 1; |
81 | range = (buf[offset] >> 6) & 1; | |
82 | toggle = (buf[offset] >> 5) & 1; | |
83 | dev = buf[offset] & 0x1f; | |
84 | code = (buf[offset+1] >> 2) & 0x3f; | |
1da177e4 | 85 | |
cc7093df DH |
86 | /* rc5 has two start bits |
87 | * the first bit must be one | |
88 | * the second bit defines the command range (1 = 0-63, 0 = 64 - 127) | |
89 | */ | |
90 | if (!start) | |
1da177e4 LT |
91 | /* no key pressed */ |
92 | return 0; | |
34c08029 DB |
93 | /* |
94 | * Hauppauge remotes (black/silver) always use | |
95 | * specific device ids. If we do not filter the | |
96 | * device ids then messages destined for devices | |
97 | * such as TVs (id=0) will get through causing | |
98 | * mis-fired events. | |
99 | * | |
100 | * We also filter out invalid key presses which | |
101 | * produce annoying debug log entries. | |
102 | */ | |
103 | ircode= (start << 12) | (toggle << 11) | (dev << 6) | code; | |
104 | if ((ircode & 0x1fff)==0x1fff) | |
105 | /* invalid key press */ | |
106 | return 0; | |
107 | ||
108 | if (dev!=0x1e && dev!=0x1f) | |
109 | /* not a hauppauge remote */ | |
110 | return 0; | |
cc7093df DH |
111 | |
112 | if (!range) | |
113 | code += 64; | |
114 | ||
115 | dprintk(1,"ir hauppauge (rc5): s%d r%d t%d dev=%d code=%d\n", | |
116 | start, range, toggle, dev, code); | |
1da177e4 LT |
117 | |
118 | /* return key */ | |
119 | *ir_key = code; | |
34c08029 | 120 | *ir_raw = ircode; |
1da177e4 LT |
121 | return 1; |
122 | } | |
123 | ||
157da276 | 124 | static int get_key_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
39cf1e81 JF |
125 | { |
126 | return get_key_haup_common (ir, ir_key, ir_raw, 3, 0); | |
127 | } | |
128 | ||
157da276 | 129 | static int get_key_haup_xvr(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
39cf1e81 JF |
130 | { |
131 | return get_key_haup_common (ir, ir_key, ir_raw, 6, 3); | |
132 | } | |
133 | ||
d5e52653 | 134 | static int get_key_pixelview(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
1da177e4 | 135 | { |
4ac97914 | 136 | unsigned char b; |
1da177e4 LT |
137 | |
138 | /* poll IR chip */ | |
c668f32d | 139 | if (1 != i2c_master_recv(ir->c, &b, 1)) { |
1da177e4 LT |
140 | dprintk(1,"read error\n"); |
141 | return -EIO; | |
142 | } | |
143 | *ir_key = b; | |
144 | *ir_raw = b; | |
145 | return 1; | |
146 | } | |
147 | ||
3c44358c | 148 | static int get_key_fusionhdtv(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
d54d6980 CZ |
149 | { |
150 | unsigned char buf[4]; | |
151 | ||
152 | /* poll IR chip */ | |
c668f32d | 153 | if (4 != i2c_master_recv(ir->c, buf, 4)) { |
d54d6980 CZ |
154 | dprintk(1,"read error\n"); |
155 | return -EIO; | |
156 | } | |
157 | ||
158 | if(buf[0] !=0 || buf[1] !=0 || buf[2] !=0 || buf[3] != 0) | |
7e28adb2 | 159 | dprintk(2, "%s: 0x%2x 0x%2x 0x%2x 0x%2x\n", __func__, |
d54d6980 CZ |
160 | buf[0], buf[1], buf[2], buf[3]); |
161 | ||
162 | /* no key pressed or signal from other ir remote */ | |
163 | if(buf[0] != 0x1 || buf[1] != 0xfe) | |
164 | return 0; | |
165 | ||
166 | *ir_key = buf[2]; | |
167 | *ir_raw = (buf[2] << 8) | buf[3]; | |
168 | ||
169 | return 1; | |
d54d6980 CZ |
170 | } |
171 | ||
d5e52653 | 172 | static int get_key_knc1(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
1da177e4 LT |
173 | { |
174 | unsigned char b; | |
175 | ||
176 | /* poll IR chip */ | |
c668f32d | 177 | if (1 != i2c_master_recv(ir->c, &b, 1)) { |
1da177e4 LT |
178 | dprintk(1,"read error\n"); |
179 | return -EIO; | |
180 | } | |
181 | ||
182 | /* it seems that 0xFE indicates that a button is still hold | |
4f9c05aa MCC |
183 | down, while 0xff indicates that no button is hold |
184 | down. 0xfe sequences are sometimes interrupted by 0xFF */ | |
1da177e4 LT |
185 | |
186 | dprintk(2,"key %02x\n", b); | |
187 | ||
4f9c05aa | 188 | if (b == 0xff) |
1da177e4 LT |
189 | return 0; |
190 | ||
4f9c05aa | 191 | if (b == 0xfe) |
1da177e4 LT |
192 | /* keep old data */ |
193 | return 1; | |
194 | ||
195 | *ir_key = b; | |
196 | *ir_raw = b; | |
197 | return 1; | |
198 | } | |
199 | ||
cb3bf504 OJ |
200 | static int get_key_avermedia_cardbus(struct IR_i2c *ir, |
201 | u32 *ir_key, u32 *ir_raw) | |
202 | { | |
203 | unsigned char subaddr, key, keygroup; | |
c668f32d | 204 | struct i2c_msg msg[] = { { .addr = ir->c->addr, .flags = 0, |
cb3bf504 | 205 | .buf = &subaddr, .len = 1}, |
c668f32d | 206 | { .addr = ir->c->addr, .flags = I2C_M_RD, |
cb3bf504 OJ |
207 | .buf = &key, .len = 1} }; |
208 | subaddr = 0x0d; | |
c668f32d | 209 | if (2 != i2c_transfer(ir->c->adapter, msg, 2)) { |
cb3bf504 OJ |
210 | dprintk(1, "read error\n"); |
211 | return -EIO; | |
212 | } | |
213 | ||
214 | if (key == 0xff) | |
215 | return 0; | |
216 | ||
217 | subaddr = 0x0b; | |
218 | msg[1].buf = &keygroup; | |
c668f32d | 219 | if (2 != i2c_transfer(ir->c->adapter, msg, 2)) { |
cb3bf504 OJ |
220 | dprintk(1, "read error\n"); |
221 | return -EIO; | |
222 | } | |
223 | ||
224 | if (keygroup == 0xff) | |
225 | return 0; | |
226 | ||
227 | dprintk(1, "read key 0x%02x/0x%02x\n", key, keygroup); | |
228 | if (keygroup < 2 || keygroup > 3) { | |
229 | /* Only a warning */ | |
230 | dprintk(1, "warning: invalid key group 0x%02x for key 0x%02x\n", | |
231 | keygroup, key); | |
232 | } | |
233 | key |= (keygroup & 1) << 6; | |
234 | ||
235 | *ir_key = key; | |
236 | *ir_raw = key; | |
237 | return 1; | |
238 | } | |
239 | ||
1da177e4 LT |
240 | /* ----------------------------------------------------------------------- */ |
241 | ||
d5e52653 | 242 | static void ir_key_poll(struct IR_i2c *ir) |
1da177e4 LT |
243 | { |
244 | static u32 ir_key, ir_raw; | |
245 | int rc; | |
246 | ||
247 | dprintk(2,"ir_poll_key\n"); | |
248 | rc = ir->get_key(ir, &ir_key, &ir_raw); | |
249 | if (rc < 0) { | |
250 | dprintk(2,"error\n"); | |
251 | return; | |
252 | } | |
253 | ||
0dc50942 | 254 | if (rc) |
d8b4b582 | 255 | ir_keydown(ir->rc, ir_key, 0); |
1da177e4 LT |
256 | } |
257 | ||
c4028958 | 258 | static void ir_work(struct work_struct *work) |
1da177e4 | 259 | { |
c1089bdc | 260 | struct IR_i2c *ir = container_of(work, struct IR_i2c, work.work); |
8083c520 | 261 | |
1da177e4 | 262 | ir_key_poll(ir); |
c72ba8e6 | 263 | schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling_interval)); |
1da177e4 LT |
264 | } |
265 | ||
266 | /* ----------------------------------------------------------------------- */ | |
267 | ||
c668f32d | 268 | static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id) |
1da177e4 | 269 | { |
02858eed | 270 | char *ir_codes = NULL; |
9a4cc5ac | 271 | const char *name = NULL; |
62c65031 | 272 | u64 ir_type = IR_TYPE_UNKNOWN; |
afd1a0c9 | 273 | struct IR_i2c *ir; |
2eb25832 | 274 | struct rc_dev *rc = NULL; |
c668f32d JD |
275 | struct i2c_adapter *adap = client->adapter; |
276 | unsigned short addr = client->addr; | |
b07b4783 | 277 | int err; |
1da177e4 | 278 | |
2eb25832 MCC |
279 | ir = kzalloc(sizeof(struct IR_i2c), GFP_KERNEL); |
280 | if (!ir) | |
281 | return -ENOMEM; | |
b7df3910 | 282 | |
c668f32d | 283 | ir->c = client; |
c72ba8e6 | 284 | ir->polling_interval = DEFAULT_POLLING_INTERVAL; |
c668f32d | 285 | i2c_set_clientdata(client, ir); |
d21838dd | 286 | |
1da177e4 LT |
287 | switch(addr) { |
288 | case 0x64: | |
289 | name = "Pixelview"; | |
290 | ir->get_key = get_key_pixelview; | |
291 | ir_type = IR_TYPE_OTHER; | |
02858eed | 292 | ir_codes = RC_MAP_EMPTY; |
1da177e4 | 293 | break; |
1da177e4 | 294 | case 0x18: |
ca39d84d | 295 | case 0x1f: |
1da177e4 LT |
296 | case 0x1a: |
297 | name = "Hauppauge"; | |
298 | ir->get_key = get_key_haup; | |
299 | ir_type = IR_TYPE_RC5; | |
bf47e4e4 | 300 | if (hauppauge == 1) { |
02858eed | 301 | ir_codes = RC_MAP_HAUPPAUGE_NEW; |
bf47e4e4 | 302 | } else { |
02858eed | 303 | ir_codes = RC_MAP_RC5_TV; |
bf47e4e4 | 304 | } |
1da177e4 LT |
305 | break; |
306 | case 0x30: | |
d5e52653 MCC |
307 | name = "KNC One"; |
308 | ir->get_key = get_key_knc1; | |
309 | ir_type = IR_TYPE_OTHER; | |
02858eed | 310 | ir_codes = RC_MAP_EMPTY; |
1da177e4 | 311 | break; |
d54d6980 | 312 | case 0x6b: |
3c44358c MK |
313 | name = "FusionHDTV"; |
314 | ir->get_key = get_key_fusionhdtv; | |
d54d6980 | 315 | ir_type = IR_TYPE_RC5; |
02858eed | 316 | ir_codes = RC_MAP_FUSIONHDTV_MCE; |
d54d6980 | 317 | break; |
cb3bf504 OJ |
318 | case 0x40: |
319 | name = "AVerMedia Cardbus remote"; | |
320 | ir->get_key = get_key_avermedia_cardbus; | |
321 | ir_type = IR_TYPE_OTHER; | |
02858eed | 322 | ir_codes = RC_MAP_AVERMEDIA_CARDBUS; |
cb3bf504 | 323 | break; |
1da177e4 LT |
324 | } |
325 | ||
4d7a2d67 JD |
326 | /* Let the caller override settings */ |
327 | if (client->dev.platform_data) { | |
328 | const struct IR_i2c_init_data *init_data = | |
329 | client->dev.platform_data; | |
330 | ||
331 | ir_codes = init_data->ir_codes; | |
2eb25832 MCC |
332 | rc = init_data->rc_dev; |
333 | ||
4d7a2d67 | 334 | name = init_data->name; |
1b6e59e3 AW |
335 | if (init_data->type) |
336 | ir_type = init_data->type; | |
337 | ||
c72ba8e6 MCC |
338 | if (init_data->polling_interval) |
339 | ir->polling_interval = init_data->polling_interval; | |
340 | ||
1b6e59e3 AW |
341 | switch (init_data->internal_get_key_func) { |
342 | case IR_KBD_GET_KEY_CUSTOM: | |
343 | /* The bridge driver provided us its own function */ | |
344 | ir->get_key = init_data->get_key; | |
345 | break; | |
346 | case IR_KBD_GET_KEY_PIXELVIEW: | |
347 | ir->get_key = get_key_pixelview; | |
348 | break; | |
1b6e59e3 AW |
349 | case IR_KBD_GET_KEY_HAUP: |
350 | ir->get_key = get_key_haup; | |
351 | break; | |
352 | case IR_KBD_GET_KEY_KNC1: | |
353 | ir->get_key = get_key_knc1; | |
354 | break; | |
355 | case IR_KBD_GET_KEY_FUSIONHDTV: | |
356 | ir->get_key = get_key_fusionhdtv; | |
357 | break; | |
358 | case IR_KBD_GET_KEY_HAUP_XVR: | |
359 | ir->get_key = get_key_haup_xvr; | |
360 | break; | |
361 | case IR_KBD_GET_KEY_AVERMEDIA_CARDBUS: | |
362 | ir->get_key = get_key_avermedia_cardbus; | |
363 | break; | |
364 | } | |
4d7a2d67 JD |
365 | } |
366 | ||
2eb25832 MCC |
367 | if (!rc) { |
368 | /* | |
369 | * If platform_data doesn't specify rc_dev, initilize it | |
370 | * internally | |
371 | */ | |
372 | rc = rc_allocate_device(); | |
373 | if (!rc) { | |
374 | err = -ENOMEM; | |
375 | goto err_out_free; | |
376 | } | |
377 | } | |
378 | ir->rc = rc; | |
379 | ||
9a4cc5ac | 380 | /* Make sure we are all setup before going on */ |
7ef68e60 | 381 | if (!name || !ir->get_key || !ir_type || !ir_codes) { |
d995a187 | 382 | dprintk(1, ": Unsupported device at address 0x%02x\n", |
9a4cc5ac JD |
383 | addr); |
384 | err = -ENODEV; | |
385 | goto err_out_free; | |
386 | } | |
387 | ||
ac9cd976 | 388 | /* Sets name */ |
1df8e986 | 389 | snprintf(ir->name, sizeof(ir->name), "i2c IR (%s)", name); |
b07b4783 | 390 | ir->ir_codes = ir_codes; |
d5e52653 | 391 | |
ac9cd976 | 392 | snprintf(ir->phys, sizeof(ir->phys), "%s/%s/ir0", |
c668f32d JD |
393 | dev_name(&adap->dev), |
394 | dev_name(&client->dev)); | |
ac9cd976 | 395 | |
2eb25832 MCC |
396 | /* |
397 | * Initialize input_dev fields | |
398 | * It doesn't make sense to allow overriding them via platform_data | |
399 | */ | |
d8b4b582 | 400 | rc->input_id.bustype = BUS_I2C; |
d8b4b582 | 401 | rc->input_phys = ir->phys; |
2eb25832 MCC |
402 | rc->input_name = ir->name; |
403 | ||
404 | /* | |
405 | * Initialize the other fields of rc_dev | |
406 | */ | |
407 | rc->map_name = ir->ir_codes; | |
408 | rc->allowed_protos = ir_type; | |
409 | if (!rc->driver_name) | |
410 | rc->driver_name = MODULE_NAME; | |
b7df3910 | 411 | |
d8b4b582 | 412 | err = rc_register_device(rc); |
b07b4783 | 413 | if (err) |
c668f32d | 414 | goto err_out_free; |
b07b4783 | 415 | |
727e625c | 416 | printk(MODULE_NAME ": %s detected at %s [%s]\n", |
d8b4b582 | 417 | ir->name, ir->phys, adap->name); |
1da177e4 LT |
418 | |
419 | /* start polling via eventd */ | |
c1089bdc JD |
420 | INIT_DELAYED_WORK(&ir->work, ir_work); |
421 | schedule_delayed_work(&ir->work, 0); | |
1da177e4 LT |
422 | |
423 | return 0; | |
b07b4783 | 424 | |
b07b4783 | 425 | err_out_free: |
2eb25832 | 426 | /* Only frees rc if it were allocated internally */ |
d8b4b582 | 427 | rc_free_device(rc); |
b07b4783 DT |
428 | kfree(ir); |
429 | return err; | |
1da177e4 LT |
430 | } |
431 | ||
c668f32d | 432 | static int ir_remove(struct i2c_client *client) |
1da177e4 | 433 | { |
4ac97914 | 434 | struct IR_i2c *ir = i2c_get_clientdata(client); |
1da177e4 LT |
435 | |
436 | /* kill outstanding polls */ | |
c1089bdc | 437 | cancel_delayed_work_sync(&ir->work); |
1da177e4 | 438 | |
c668f32d | 439 | /* unregister device */ |
d8b4b582 | 440 | rc_unregister_device(ir->rc); |
1da177e4 LT |
441 | |
442 | /* free memory */ | |
443 | kfree(ir); | |
444 | return 0; | |
445 | } | |
446 | ||
c668f32d JD |
447 | static const struct i2c_device_id ir_kbd_id[] = { |
448 | /* Generic entry for any IR receiver */ | |
449 | { "ir_video", 0 }, | |
f5d887ae AW |
450 | /* IR device specific entries should be added here */ |
451 | { "ir_rx_z8f0811_haup", 0 }, | |
c668f32d JD |
452 | { } |
453 | }; | |
cb3bf504 | 454 | |
c668f32d JD |
455 | static struct i2c_driver driver = { |
456 | .driver = { | |
457 | .name = "ir-kbd-i2c", | |
458 | }, | |
459 | .probe = ir_probe, | |
460 | .remove = ir_remove, | |
461 | .id_table = ir_kbd_id, | |
462 | }; | |
1da177e4 LT |
463 | |
464 | /* ----------------------------------------------------------------------- */ | |
465 | ||
466 | MODULE_AUTHOR("Gerd Knorr, Michal Kochanowicz, Christoph Bartelmus, Ulrich Mueller"); | |
467 | MODULE_DESCRIPTION("input driver for i2c IR remote controls"); | |
468 | MODULE_LICENSE("GPL"); | |
469 | ||
470 | static int __init ir_init(void) | |
471 | { | |
472 | return i2c_add_driver(&driver); | |
473 | } | |
474 | ||
475 | static void __exit ir_fini(void) | |
476 | { | |
477 | i2c_del_driver(&driver); | |
478 | } | |
479 | ||
480 | module_init(ir_init); | |
481 | module_exit(ir_fini); | |
482 | ||
483 | /* | |
484 | * Overrides for Emacs so that we follow Linus's tabbing style. | |
485 | * --------------------------------------------------------------------------- | |
486 | * Local variables: | |
487 | * c-basic-offset: 8 | |
488 | * End: | |
489 | */ |