Commit | Line | Data |
---|---|---|
d5e52653 | 1 | /* |
f7abcd38 MCC |
2 | handle em28xx IR remotes via linux kernel input layer. |
3 | ||
4 | Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it> | |
5 | Markus Rechberger <mrechberger@gmail.com> | |
2e7c6dc3 | 6 | Mauro Carvalho Chehab <mchehab@infradead.org> |
f7abcd38 MCC |
7 | Sascha Sommer <saschasommer@freenet.de> |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
d5e52653 MCC |
22 | */ |
23 | ||
24 | #include <linux/module.h> | |
d5e52653 MCC |
25 | #include <linux/init.h> |
26 | #include <linux/delay.h> | |
d5e52653 | 27 | #include <linux/interrupt.h> |
d5e52653 | 28 | #include <linux/usb.h> |
5a0e3ad6 | 29 | #include <linux/slab.h> |
d5e52653 | 30 | |
f7abcd38 | 31 | #include "em28xx.h" |
d5e52653 | 32 | |
a9fc52bc DH |
33 | #define EM28XX_SNAPSHOT_KEY KEY_CAMERA |
34 | #define EM28XX_SBUTTON_QUERY_INTERVAL 500 | |
35 | #define EM28XX_R0C_USBSUSP_SNAPSHOT 0x20 | |
36 | ||
c8793b03 | 37 | static unsigned int ir_debug; |
d5e52653 | 38 | module_param(ir_debug, int, 0644); |
6ea54d93 | 39 | MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]"); |
d5e52653 | 40 | |
727e625c MCC |
41 | #define MODULE_NAME "em28xx" |
42 | ||
a924a499 MCC |
43 | #define dprintk(fmt, arg...) \ |
44 | if (ir_debug) { \ | |
45 | printk(KERN_DEBUG "%s/ir: " fmt, ir->name , ## arg); \ | |
46 | } | |
47 | ||
48 | /********************************************************** | |
49 | Polling structure used by em28xx IR's | |
50 | **********************************************************/ | |
51 | ||
4b92253a DH |
52 | struct em28xx_ir_poll_result { |
53 | unsigned int toggle_bit:1; | |
54 | unsigned int read_count:7; | |
105e3687 MCC |
55 | |
56 | u32 scancode; | |
4b92253a DH |
57 | }; |
58 | ||
a924a499 MCC |
59 | struct em28xx_IR { |
60 | struct em28xx *dev; | |
d8b4b582 | 61 | struct rc_dev *rc; |
a924a499 MCC |
62 | char name[32]; |
63 | char phys[32]; | |
64 | ||
768da3db | 65 | /* poll decoder */ |
a924a499 | 66 | int polling; |
f263bac9 | 67 | struct delayed_work work; |
0278155c | 68 | unsigned int full_code:1; |
4b92253a | 69 | unsigned int last_readcount; |
105e3687 | 70 | u64 rc_type; |
a924a499 | 71 | |
1d968cda FS |
72 | /* i2c slave address of external device (if used) */ |
73 | u16 i2c_dev_addr; | |
768da3db | 74 | |
146b7ee6 | 75 | int (*get_key_i2c)(struct i2c_client *, u32 *); |
4b92253a | 76 | int (*get_key)(struct em28xx_IR *, struct em28xx_ir_poll_result *); |
a924a499 MCC |
77 | }; |
78 | ||
79 | /********************************************************** | |
80 | I2C IR based get keycodes - should be used with ir-kbd-i2c | |
81 | **********************************************************/ | |
d5e52653 | 82 | |
146b7ee6 | 83 | static int em28xx_get_key_terratec(struct i2c_client *i2c_dev, u32 *ir_key) |
e43f14af MR |
84 | { |
85 | unsigned char b; | |
86 | ||
87 | /* poll IR chip */ | |
768da3db | 88 | if (1 != i2c_master_recv(i2c_dev, &b, 1)) |
e43f14af | 89 | return -EIO; |
e43f14af MR |
90 | |
91 | /* it seems that 0xFE indicates that a button is still hold | |
450c7dd6 | 92 | down, while 0xff indicates that no button is hold down. */ |
e43f14af | 93 | |
4f9c05aa | 94 | if (b == 0xff) |
e43f14af MR |
95 | return 0; |
96 | ||
4f9c05aa | 97 | if (b == 0xfe) |
e43f14af MR |
98 | /* keep old data */ |
99 | return 1; | |
100 | ||
101 | *ir_key = b; | |
e43f14af MR |
102 | return 1; |
103 | } | |
104 | ||
146b7ee6 | 105 | static int em28xx_get_key_em_haup(struct i2c_client *i2c_dev, u32 *ir_key) |
d5e52653 MCC |
106 | { |
107 | unsigned char buf[2]; | |
b779974b MCC |
108 | u16 code; |
109 | int size; | |
d5e52653 MCC |
110 | |
111 | /* poll IR chip */ | |
768da3db | 112 | size = i2c_master_recv(i2c_dev, buf, sizeof(buf)); |
b779974b MCC |
113 | |
114 | if (size != 2) | |
d5e52653 MCC |
115 | return -EIO; |
116 | ||
117 | /* Does eliminate repeated parity code */ | |
6ea54d93 | 118 | if (buf[1] == 0xff) |
d5e52653 MCC |
119 | return 0; |
120 | ||
b779974b MCC |
121 | /* |
122 | * Rearranges bits to the right order. | |
123 | * The bit order were determined experimentally by using | |
124 | * The original Hauppauge Grey IR and another RC5 that uses addr=0x08 | |
125 | * The RC5 code has 14 bits, but we've experimentally determined | |
126 | * the meaning for only 11 bits. | |
127 | * So, the code translation is not complete. Yet, it is enough to | |
128 | * work with the provided RC5 IR. | |
129 | */ | |
130 | code = | |
131 | ((buf[0] & 0x01) ? 0x0020 : 0) | /* 0010 0000 */ | |
132 | ((buf[0] & 0x02) ? 0x0010 : 0) | /* 0001 0000 */ | |
133 | ((buf[0] & 0x04) ? 0x0008 : 0) | /* 0000 1000 */ | |
134 | ((buf[0] & 0x08) ? 0x0004 : 0) | /* 0000 0100 */ | |
135 | ((buf[0] & 0x10) ? 0x0002 : 0) | /* 0000 0010 */ | |
136 | ((buf[0] & 0x20) ? 0x0001 : 0) | /* 0000 0001 */ | |
137 | ((buf[1] & 0x08) ? 0x1000 : 0) | /* 0001 0000 */ | |
138 | ((buf[1] & 0x10) ? 0x0800 : 0) | /* 0000 1000 */ | |
139 | ((buf[1] & 0x20) ? 0x0400 : 0) | /* 0000 0100 */ | |
140 | ((buf[1] & 0x40) ? 0x0200 : 0) | /* 0000 0010 */ | |
141 | ((buf[1] & 0x80) ? 0x0100 : 0); /* 0000 0001 */ | |
142 | ||
d5e52653 MCC |
143 | /* return key */ |
144 | *ir_key = code; | |
d5e52653 MCC |
145 | return 1; |
146 | } | |
147 | ||
768da3db | 148 | static int em28xx_get_key_pinnacle_usb_grey(struct i2c_client *i2c_dev, |
146b7ee6 | 149 | u32 *ir_key) |
366cc64b MR |
150 | { |
151 | unsigned char buf[3]; | |
152 | ||
153 | /* poll IR chip */ | |
154 | ||
768da3db | 155 | if (3 != i2c_master_recv(i2c_dev, buf, 3)) |
366cc64b | 156 | return -EIO; |
366cc64b | 157 | |
6ea54d93 | 158 | if (buf[0] != 0x00) |
366cc64b | 159 | return 0; |
366cc64b MR |
160 | |
161 | *ir_key = buf[2]&0x3f; | |
366cc64b MR |
162 | |
163 | return 1; | |
164 | } | |
165 | ||
768da3db | 166 | static int em28xx_get_key_winfast_usbii_deluxe(struct i2c_client *i2c_dev, |
146b7ee6 | 167 | u32 *ir_key) |
ca39d84d MA |
168 | { |
169 | unsigned char subaddr, keydetect, key; | |
170 | ||
768da3db | 171 | struct i2c_msg msg[] = { { .addr = i2c_dev->addr, .flags = 0, .buf = &subaddr, .len = 1}, |
450c7dd6 | 172 | { .addr = i2c_dev->addr, .flags = I2C_M_RD, .buf = &keydetect, .len = 1} }; |
ca39d84d MA |
173 | |
174 | subaddr = 0x10; | |
768da3db | 175 | if (2 != i2c_transfer(i2c_dev->adapter, msg, 2)) |
ca39d84d | 176 | return -EIO; |
ca39d84d MA |
177 | if (keydetect == 0x00) |
178 | return 0; | |
179 | ||
180 | subaddr = 0x00; | |
181 | msg[1].buf = &key; | |
768da3db | 182 | if (2 != i2c_transfer(i2c_dev->adapter, msg, 2)) |
62ec3f86 | 183 | return -EIO; |
ca39d84d MA |
184 | if (key == 0x00) |
185 | return 0; | |
186 | ||
187 | *ir_key = key; | |
ca39d84d MA |
188 | return 1; |
189 | } | |
190 | ||
a924a499 MCC |
191 | /********************************************************** |
192 | Poll based get keycode functions | |
193 | **********************************************************/ | |
194 | ||
4b92253a DH |
195 | /* This is for the em2860/em2880 */ |
196 | static int default_polling_getkey(struct em28xx_IR *ir, | |
197 | struct em28xx_ir_poll_result *poll_result) | |
a924a499 MCC |
198 | { |
199 | struct em28xx *dev = ir->dev; | |
200 | int rc; | |
4b92253a | 201 | u8 msg[3] = { 0, 0, 0 }; |
a924a499 | 202 | |
0a6b8a85 MCC |
203 | /* Read key toggle, brand, and key code |
204 | on registers 0x45, 0x46 and 0x47 | |
205 | */ | |
a924a499 | 206 | rc = dev->em28xx_read_reg_req_len(dev, 0, EM28XX_R45_IR, |
0a6b8a85 | 207 | msg, sizeof(msg)); |
a924a499 MCC |
208 | if (rc < 0) |
209 | return rc; | |
210 | ||
4b92253a DH |
211 | /* Infrared toggle (Reg 0x45[7]) */ |
212 | poll_result->toggle_bit = (msg[0] >> 7); | |
213 | ||
214 | /* Infrared read count (Reg 0x45[6:0] */ | |
215 | poll_result->read_count = (msg[0] & 0x7f); | |
216 | ||
105e3687 MCC |
217 | /* Remote Control Address/Data (Regs 0x46/0x47) */ |
218 | poll_result->scancode = msg[1] << 8 | msg[2]; | |
4b92253a DH |
219 | |
220 | return 0; | |
221 | } | |
222 | ||
223 | static int em2874_polling_getkey(struct em28xx_IR *ir, | |
224 | struct em28xx_ir_poll_result *poll_result) | |
225 | { | |
226 | struct em28xx *dev = ir->dev; | |
227 | int rc; | |
228 | u8 msg[5] = { 0, 0, 0, 0, 0 }; | |
229 | ||
230 | /* Read key toggle, brand, and key code | |
231 | on registers 0x51-55 | |
232 | */ | |
233 | rc = dev->em28xx_read_reg_req_len(dev, 0, EM2874_R51_IR, | |
234 | msg, sizeof(msg)); | |
235 | if (rc < 0) | |
236 | return rc; | |
237 | ||
238 | /* Infrared toggle (Reg 0x51[7]) */ | |
239 | poll_result->toggle_bit = (msg[0] >> 7); | |
240 | ||
241 | /* Infrared read count (Reg 0x51[6:0] */ | |
242 | poll_result->read_count = (msg[0] & 0x7f); | |
243 | ||
105e3687 MCC |
244 | /* |
245 | * Remote Control Address (Reg 0x52) | |
246 | * Remote Control Data (Reg 0x53-0x55) | |
247 | */ | |
248 | switch (ir->rc_type) { | |
249 | case RC_BIT_RC5: | |
250 | poll_result->scancode = msg[1] << 8 | msg[2]; | |
251 | break; | |
252 | case RC_BIT_NEC: | |
253 | if ((msg[3] ^ msg[4]) != 0xff) /* 32 bits NEC */ | |
254 | poll_result->scancode = (msg[1] << 24) | | |
255 | (msg[2] << 16) | | |
256 | (msg[3] << 8) | | |
257 | msg[4]; | |
258 | else if ((msg[1] ^ msg[2]) != 0xff) /* 24 bits NEC */ | |
259 | poll_result->scancode = (msg[1] << 16) | | |
260 | (msg[2] << 8) | | |
261 | msg[3]; | |
262 | else /* Normal NEC */ | |
263 | poll_result->scancode = msg[1] << 8 | msg[3]; | |
264 | break; | |
0dae8839 MCC |
265 | case RC_BIT_RC6_0: |
266 | poll_result->scancode = msg[1] << 8 | msg[2]; | |
267 | break; | |
105e3687 MCC |
268 | default: |
269 | poll_result->scancode = (msg[1] << 24) | (msg[2] << 16) | | |
270 | (msg[3] << 8) | msg[4]; | |
271 | break; | |
272 | } | |
4b92253a DH |
273 | |
274 | return 0; | |
a924a499 MCC |
275 | } |
276 | ||
277 | /********************************************************** | |
278 | Polling code for em28xx | |
279 | **********************************************************/ | |
280 | ||
768da3db FS |
281 | static int em28xx_i2c_ir_handle_key(struct em28xx_IR *ir) |
282 | { | |
146b7ee6 | 283 | static u32 ir_key; |
768da3db | 284 | int rc; |
1d968cda | 285 | struct i2c_client client; |
768da3db | 286 | |
1d968cda FS |
287 | client.adapter = &ir->dev->i2c_adap; |
288 | client.addr = ir->i2c_dev_addr; | |
289 | ||
290 | rc = ir->get_key_i2c(&client, &ir_key); | |
768da3db FS |
291 | if (rc < 0) { |
292 | dprintk("ir->get_key_i2c() failed: %d\n", rc); | |
293 | return rc; | |
294 | } | |
295 | ||
296 | if (rc) { | |
297 | dprintk("%s: keycode = 0x%04x\n", __func__, ir_key); | |
298 | rc_keydown(ir->rc, ir_key, 0); | |
299 | } | |
300 | return 0; | |
301 | } | |
302 | ||
a924a499 MCC |
303 | static void em28xx_ir_handle_key(struct em28xx_IR *ir) |
304 | { | |
4b92253a | 305 | int result; |
4b92253a DH |
306 | struct em28xx_ir_poll_result poll_result; |
307 | ||
308 | /* read the registers containing the IR status */ | |
309 | result = ir->get_key(ir, &poll_result); | |
603044d8 | 310 | if (unlikely(result < 0)) { |
768da3db | 311 | dprintk("ir->get_key() failed: %d\n", result); |
a924a499 | 312 | return; |
4b92253a | 313 | } |
a924a499 | 314 | |
603044d8 | 315 | if (unlikely(poll_result.read_count != ir->last_readcount)) { |
105e3687 | 316 | dprintk("%s: toggle: %d, count: %d, key 0x%04x\n", __func__, |
603044d8 | 317 | poll_result.toggle_bit, poll_result.read_count, |
105e3687 | 318 | poll_result.scancode); |
a469585b | 319 | if (ir->full_code) |
ca86674b | 320 | rc_keydown(ir->rc, |
105e3687 | 321 | poll_result.scancode, |
a469585b DH |
322 | poll_result.toggle_bit); |
323 | else | |
ca86674b | 324 | rc_keydown(ir->rc, |
105e3687 | 325 | poll_result.scancode & 0xff, |
a469585b | 326 | poll_result.toggle_bit); |
a469585b | 327 | |
20ae9742 MCC |
328 | if (ir->dev->chip_id == CHIP_ID_EM2874 || |
329 | ir->dev->chip_id == CHIP_ID_EM2884) | |
603044d8 MCC |
330 | /* The em2874 clears the readcount field every time the |
331 | register is read. The em2860/2880 datasheet says that it | |
332 | is supposed to clear the readcount, but it doesn't. So with | |
333 | the em2874, we are looking for a non-zero read count as | |
334 | opposed to a readcount that is incrementing */ | |
335 | ir->last_readcount = 0; | |
336 | else | |
337 | ir->last_readcount = poll_result.read_count; | |
338 | } | |
a924a499 MCC |
339 | } |
340 | ||
768da3db FS |
341 | static void em28xx_i2c_ir_work(struct work_struct *work) |
342 | { | |
343 | struct em28xx_IR *ir = container_of(work, struct em28xx_IR, work.work); | |
344 | ||
345 | em28xx_i2c_ir_handle_key(ir); | |
346 | schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling)); | |
347 | } | |
348 | ||
a924a499 MCC |
349 | static void em28xx_ir_work(struct work_struct *work) |
350 | { | |
f263bac9 | 351 | struct em28xx_IR *ir = container_of(work, struct em28xx_IR, work.work); |
a924a499 MCC |
352 | |
353 | em28xx_ir_handle_key(ir); | |
f263bac9 | 354 | schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling)); |
a924a499 MCC |
355 | } |
356 | ||
d8b4b582 | 357 | static int em28xx_ir_start(struct rc_dev *rc) |
a924a499 | 358 | { |
d8b4b582 | 359 | struct em28xx_IR *ir = rc->priv; |
c373cabf | 360 | |
1d968cda | 361 | if (ir->i2c_dev_addr) /* external i2c device */ |
768da3db FS |
362 | INIT_DELAYED_WORK(&ir->work, em28xx_i2c_ir_work); |
363 | else /* internal device */ | |
364 | INIT_DELAYED_WORK(&ir->work, em28xx_ir_work); | |
f263bac9 | 365 | schedule_delayed_work(&ir->work, 0); |
c373cabf MCC |
366 | |
367 | return 0; | |
a924a499 MCC |
368 | } |
369 | ||
d8b4b582 | 370 | static void em28xx_ir_stop(struct rc_dev *rc) |
a924a499 | 371 | { |
d8b4b582 | 372 | struct em28xx_IR *ir = rc->priv; |
c373cabf | 373 | |
f263bac9 | 374 | cancel_delayed_work_sync(&ir->work); |
a924a499 MCC |
375 | } |
376 | ||
0dae8839 | 377 | static int em2860_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_type) |
a924a499 | 378 | { |
d8b4b582 | 379 | struct em28xx_IR *ir = rc_dev->priv; |
950b0f5a | 380 | struct em28xx *dev = ir->dev; |
1bad429e | 381 | |
0dae8839 MCC |
382 | /* Adjust xclk based on IR table for RC5/NEC tables */ |
383 | if (*rc_type & RC_BIT_RC5) { | |
384 | dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE; | |
385 | ir->full_code = 1; | |
386 | *rc_type = RC_BIT_RC5; | |
387 | } else if (*rc_type & RC_BIT_NEC) { | |
388 | dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE; | |
389 | ir->full_code = 1; | |
390 | *rc_type = RC_BIT_NEC; | |
391 | } else if (*rc_type & RC_BIT_UNKNOWN) { | |
392 | *rc_type = RC_BIT_UNKNOWN; | |
393 | } else { | |
394 | *rc_type = ir->rc_type; | |
395 | return -EINVAL; | |
396 | } | |
0dae8839 MCC |
397 | em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk, |
398 | EM28XX_XCLK_IR_RC5_MODE); | |
399 | ||
400 | ir->rc_type = *rc_type; | |
950b0f5a | 401 | |
0dae8839 MCC |
402 | return 0; |
403 | } | |
404 | ||
405 | static int em2874_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_type) | |
406 | { | |
407 | struct em28xx_IR *ir = rc_dev->priv; | |
408 | struct em28xx *dev = ir->dev; | |
409 | u8 ir_config = EM2874_IR_RC5; | |
410 | ||
411 | /* Adjust xclk and set type based on IR table for RC5/NEC/RC6 tables */ | |
c003ab1b | 412 | if (*rc_type & RC_BIT_RC5) { |
1bad429e MCC |
413 | dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE; |
414 | ir->full_code = 1; | |
c003ab1b DH |
415 | *rc_type = RC_BIT_RC5; |
416 | } else if (*rc_type & RC_BIT_NEC) { | |
1bad429e | 417 | dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE; |
105e3687 | 418 | ir_config = EM2874_IR_NEC | EM2874_IR_NEC_NO_PARITY; |
1bad429e | 419 | ir->full_code = 1; |
c003ab1b | 420 | *rc_type = RC_BIT_NEC; |
0dae8839 MCC |
421 | } else if (*rc_type & RC_BIT_RC6_0) { |
422 | dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE; | |
423 | ir_config = EM2874_IR_RC6_MODE_0; | |
424 | ir->full_code = 1; | |
425 | *rc_type = RC_BIT_RC6_0; | |
426 | } else if (*rc_type & RC_BIT_UNKNOWN) { | |
427 | *rc_type = RC_BIT_UNKNOWN; | |
428 | } else { | |
429 | *rc_type = ir->rc_type; | |
430 | return -EINVAL; | |
431 | } | |
0dae8839 | 432 | em28xx_write_regs(dev, EM2874_R50_IR_CONFIG, &ir_config, 1); |
1bad429e MCC |
433 | em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk, |
434 | EM28XX_XCLK_IR_RC5_MODE); | |
a924a499 | 435 | |
0dae8839 MCC |
436 | ir->rc_type = *rc_type; |
437 | ||
438 | return 0; | |
439 | } | |
440 | static int em28xx_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_type) | |
441 | { | |
442 | struct em28xx_IR *ir = rc_dev->priv; | |
443 | struct em28xx *dev = ir->dev; | |
444 | ||
4b92253a DH |
445 | /* Setup the proper handler based on the chip */ |
446 | switch (dev->chip_id) { | |
447 | case CHIP_ID_EM2860: | |
448 | case CHIP_ID_EM2883: | |
0dae8839 | 449 | return em2860_ir_change_protocol(rc_dev, rc_type); |
20ae9742 | 450 | case CHIP_ID_EM2884: |
4b92253a | 451 | case CHIP_ID_EM2874: |
a24ec448 | 452 | case CHIP_ID_EM28174: |
0dae8839 | 453 | return em2874_ir_change_protocol(rc_dev, rc_type); |
4b92253a | 454 | default: |
20ae9742 MCC |
455 | printk("Unrecognized em28xx chip id 0x%02x: IR not supported\n", |
456 | dev->chip_id); | |
0dae8839 | 457 | return -EINVAL; |
950b0f5a | 458 | } |
950b0f5a MCC |
459 | } |
460 | ||
1d968cda | 461 | static int em28xx_probe_i2c_ir(struct em28xx *dev) |
9d9f479b | 462 | { |
768da3db | 463 | int i = 0; |
9d9f479b EG |
464 | /* Leadtek winfast tv USBII deluxe can find a non working IR-device */ |
465 | /* at address 0x18, so if that address is needed for another board in */ | |
466 | /* the future, please put it after 0x1f. */ | |
9d9f479b EG |
467 | const unsigned short addr_list[] = { |
468 | 0x1f, 0x30, 0x47, I2C_CLIENT_END | |
469 | }; | |
470 | ||
768da3db | 471 | while (addr_list[i] != I2C_CLIENT_END) { |
1d968cda FS |
472 | if (i2c_probe_func_quick_read(&dev->i2c_adap, addr_list[i]) == 1) |
473 | return addr_list[i]; | |
768da3db | 474 | i++; |
9d9f479b EG |
475 | } |
476 | ||
1d968cda | 477 | return -ENODEV; |
9d9f479b EG |
478 | } |
479 | ||
769af214 EG |
480 | /********************************************************** |
481 | Handle Webcam snapshot button | |
482 | **********************************************************/ | |
483 | ||
484 | static void em28xx_query_sbutton(struct work_struct *work) | |
485 | { | |
486 | /* Poll the register and see if the button is depressed */ | |
487 | struct em28xx *dev = | |
488 | container_of(work, struct em28xx, sbutton_query_work.work); | |
489 | int ret; | |
490 | ||
491 | ret = em28xx_read_reg(dev, EM28XX_R0C_USBSUSP); | |
492 | ||
493 | if (ret & EM28XX_R0C_USBSUSP_SNAPSHOT) { | |
494 | u8 cleared; | |
495 | /* Button is depressed, clear the register */ | |
496 | cleared = ((u8) ret) & ~EM28XX_R0C_USBSUSP_SNAPSHOT; | |
497 | em28xx_write_regs(dev, EM28XX_R0C_USBSUSP, &cleared, 1); | |
498 | ||
499 | /* Not emulate the keypress */ | |
500 | input_report_key(dev->sbutton_input_dev, EM28XX_SNAPSHOT_KEY, | |
501 | 1); | |
502 | /* Now unpress the key */ | |
503 | input_report_key(dev->sbutton_input_dev, EM28XX_SNAPSHOT_KEY, | |
504 | 0); | |
505 | } | |
506 | ||
507 | /* Schedule next poll */ | |
508 | schedule_delayed_work(&dev->sbutton_query_work, | |
509 | msecs_to_jiffies(EM28XX_SBUTTON_QUERY_INTERVAL)); | |
510 | } | |
511 | ||
512 | static void em28xx_register_snapshot_button(struct em28xx *dev) | |
513 | { | |
514 | struct input_dev *input_dev; | |
515 | int err; | |
516 | ||
517 | em28xx_info("Registering snapshot button...\n"); | |
518 | input_dev = input_allocate_device(); | |
519 | if (!input_dev) { | |
520 | em28xx_errdev("input_allocate_device failed\n"); | |
521 | return; | |
522 | } | |
523 | ||
524 | usb_make_path(dev->udev, dev->snapshot_button_path, | |
525 | sizeof(dev->snapshot_button_path)); | |
526 | strlcat(dev->snapshot_button_path, "/sbutton", | |
527 | sizeof(dev->snapshot_button_path)); | |
528 | INIT_DELAYED_WORK(&dev->sbutton_query_work, em28xx_query_sbutton); | |
529 | ||
530 | input_dev->name = "em28xx snapshot button"; | |
531 | input_dev->phys = dev->snapshot_button_path; | |
532 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); | |
533 | set_bit(EM28XX_SNAPSHOT_KEY, input_dev->keybit); | |
534 | input_dev->keycodesize = 0; | |
535 | input_dev->keycodemax = 0; | |
536 | input_dev->id.bustype = BUS_USB; | |
537 | input_dev->id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor); | |
538 | input_dev->id.product = le16_to_cpu(dev->udev->descriptor.idProduct); | |
539 | input_dev->id.version = 1; | |
540 | input_dev->dev.parent = &dev->udev->dev; | |
541 | ||
542 | err = input_register_device(input_dev); | |
543 | if (err) { | |
544 | em28xx_errdev("input_register_device failed\n"); | |
545 | input_free_device(input_dev); | |
546 | return; | |
547 | } | |
548 | ||
549 | dev->sbutton_input_dev = input_dev; | |
550 | schedule_delayed_work(&dev->sbutton_query_work, | |
551 | msecs_to_jiffies(EM28XX_SBUTTON_QUERY_INTERVAL)); | |
552 | return; | |
553 | ||
554 | } | |
555 | ||
556 | static void em28xx_deregister_snapshot_button(struct em28xx *dev) | |
557 | { | |
558 | if (dev->sbutton_input_dev != NULL) { | |
559 | em28xx_info("Deregistering snapshot button\n"); | |
560 | cancel_delayed_work_sync(&dev->sbutton_query_work); | |
561 | input_unregister_device(dev->sbutton_input_dev); | |
562 | dev->sbutton_input_dev = NULL; | |
563 | } | |
564 | return; | |
565 | } | |
566 | ||
f4d4e765 | 567 | static int em28xx_ir_init(struct em28xx *dev) |
950b0f5a MCC |
568 | { |
569 | struct em28xx_IR *ir; | |
d8b4b582 | 570 | struct rc_dev *rc; |
950b0f5a | 571 | int err = -ENOMEM; |
c003ab1b | 572 | u64 rc_type; |
1d968cda | 573 | u16 i2c_rc_dev_addr = 0; |
950b0f5a | 574 | |
8303dc99 MCC |
575 | if (dev->board.has_snapshot_button) |
576 | em28xx_register_snapshot_button(dev); | |
577 | ||
578 | if (dev->board.has_ir_i2c) { | |
1d968cda FS |
579 | i2c_rc_dev_addr = em28xx_probe_i2c_ir(dev); |
580 | if (!i2c_rc_dev_addr) { | |
768da3db FS |
581 | dev->board.has_ir_i2c = 0; |
582 | em28xx_warn("No i2c IR remote control device found.\n"); | |
583 | return -ENODEV; | |
584 | } | |
8303dc99 MCC |
585 | } |
586 | ||
768da3db | 587 | if (dev->board.ir_codes == NULL && !dev->board.has_ir_i2c) { |
950b0f5a | 588 | /* No remote control support */ |
b83f6715 MB |
589 | em28xx_warn("Remote control support is not available for " |
590 | "this card.\n"); | |
950b0f5a | 591 | return 0; |
a924a499 MCC |
592 | } |
593 | ||
950b0f5a | 594 | ir = kzalloc(sizeof(*ir), GFP_KERNEL); |
d8b4b582 DH |
595 | rc = rc_allocate_device(); |
596 | if (!ir || !rc) | |
2f5741aa | 597 | goto error; |
950b0f5a MCC |
598 | |
599 | /* record handles to ourself */ | |
600 | ir->dev = dev; | |
601 | dev->ir = ir; | |
d8b4b582 | 602 | ir->rc = rc; |
950b0f5a | 603 | |
d8b4b582 | 604 | rc->priv = ir; |
d8b4b582 DH |
605 | rc->open = em28xx_ir_start; |
606 | rc->close = em28xx_ir_stop; | |
c373cabf | 607 | |
768da3db FS |
608 | if (dev->board.has_ir_i2c) { /* external i2c device */ |
609 | switch (dev->model) { | |
610 | case EM2800_BOARD_TERRATEC_CINERGY_200: | |
611 | case EM2820_BOARD_TERRATEC_CINERGY_250: | |
612 | rc->map_name = RC_MAP_EM_TERRATEC; | |
613 | ir->get_key_i2c = em28xx_get_key_terratec; | |
614 | break; | |
615 | case EM2820_BOARD_PINNACLE_USB_2: | |
616 | rc->map_name = RC_MAP_PINNACLE_GREY; | |
617 | ir->get_key_i2c = em28xx_get_key_pinnacle_usb_grey; | |
618 | break; | |
619 | case EM2820_BOARD_HAUPPAUGE_WINTV_USB_2: | |
620 | rc->map_name = RC_MAP_HAUPPAUGE; | |
621 | ir->get_key_i2c = em28xx_get_key_em_haup; | |
622 | rc->allowed_protos = RC_BIT_RC5; | |
623 | break; | |
624 | case EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE: | |
625 | rc->map_name = RC_MAP_WINFAST_USBII_DELUXE; | |
626 | ir->get_key_i2c = em28xx_get_key_winfast_usbii_deluxe; | |
627 | break; | |
628 | default: | |
629 | err = -ENODEV; | |
630 | goto error; | |
631 | } | |
632 | ||
1d968cda | 633 | ir->i2c_dev_addr = i2c_rc_dev_addr; |
768da3db FS |
634 | } else { /* internal device */ |
635 | switch (dev->chip_id) { | |
636 | case CHIP_ID_EM2860: | |
637 | case CHIP_ID_EM2883: | |
638 | rc->allowed_protos = RC_BIT_RC5 | RC_BIT_NEC; | |
639 | ir->get_key = default_polling_getkey; | |
640 | break; | |
641 | case CHIP_ID_EM2884: | |
642 | case CHIP_ID_EM2874: | |
643 | case CHIP_ID_EM28174: | |
644 | ir->get_key = em2874_polling_getkey; | |
645 | rc->allowed_protos = RC_BIT_RC5 | RC_BIT_NEC | | |
646 | RC_BIT_RC6_0; | |
647 | break; | |
648 | default: | |
649 | err = -ENODEV; | |
650 | goto error; | |
651 | } | |
652 | ||
653 | rc->change_protocol = em28xx_ir_change_protocol; | |
654 | rc->map_name = dev->board.ir_codes; | |
655 | ||
656 | /* By default, keep protocol field untouched */ | |
657 | rc_type = RC_BIT_UNKNOWN; | |
658 | err = em28xx_ir_change_protocol(rc, &rc_type); | |
659 | if (err) | |
660 | goto error; | |
0dae8839 MCC |
661 | } |
662 | ||
4b92253a DH |
663 | /* This is how often we ask the chip for IR information */ |
664 | ir->polling = 100; /* ms */ | |
665 | ||
a924a499 | 666 | /* init input device */ |
768da3db | 667 | snprintf(ir->name, sizeof(ir->name), "em28xx IR (%s)", dev->name); |
a924a499 MCC |
668 | |
669 | usb_make_path(dev->udev, ir->phys, sizeof(ir->phys)); | |
670 | strlcat(ir->phys, "/input0", sizeof(ir->phys)); | |
671 | ||
d8b4b582 DH |
672 | rc->input_name = ir->name; |
673 | rc->input_phys = ir->phys; | |
674 | rc->input_id.bustype = BUS_USB; | |
675 | rc->input_id.version = 1; | |
676 | rc->input_id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor); | |
677 | rc->input_id.product = le16_to_cpu(dev->udev->descriptor.idProduct); | |
678 | rc->dev.parent = &dev->udev->dev; | |
d8b4b582 | 679 | rc->driver_name = MODULE_NAME; |
a924a499 MCC |
680 | |
681 | /* all done */ | |
d8b4b582 | 682 | err = rc_register_device(rc); |
a924a499 | 683 | if (err) |
2f5741aa | 684 | goto error; |
a924a499 MCC |
685 | |
686 | return 0; | |
d8b4b582 | 687 | |
2f5741aa | 688 | error: |
a924a499 | 689 | dev->ir = NULL; |
d8b4b582 | 690 | rc_free_device(rc); |
a924a499 MCC |
691 | kfree(ir); |
692 | return err; | |
693 | } | |
694 | ||
f4d4e765 | 695 | static int em28xx_ir_fini(struct em28xx *dev) |
a924a499 MCC |
696 | { |
697 | struct em28xx_IR *ir = dev->ir; | |
698 | ||
2fd6f8d1 EG |
699 | em28xx_deregister_snapshot_button(dev); |
700 | ||
a924a499 MCC |
701 | /* skip detach on non attached boards */ |
702 | if (!ir) | |
703 | return 0; | |
704 | ||
6d514774 MCC |
705 | if (ir->rc) |
706 | rc_unregister_device(ir->rc); | |
a924a499 MCC |
707 | |
708 | /* done */ | |
6d514774 | 709 | kfree(ir); |
a924a499 MCC |
710 | dev->ir = NULL; |
711 | return 0; | |
712 | } | |
713 | ||
f4d4e765 EG |
714 | static struct em28xx_ops rc_ops = { |
715 | .id = EM28XX_RC, | |
716 | .name = "Em28xx Input Extension", | |
717 | .init = em28xx_ir_init, | |
718 | .fini = em28xx_ir_fini, | |
719 | }; | |
720 | ||
721 | static int __init em28xx_rc_register(void) | |
722 | { | |
723 | return em28xx_register_extension(&rc_ops); | |
724 | } | |
725 | ||
726 | static void __exit em28xx_rc_unregister(void) | |
727 | { | |
728 | em28xx_unregister_extension(&rc_ops); | |
729 | } | |
730 | ||
731 | MODULE_LICENSE("GPL"); | |
732 | MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>"); | |
733 | MODULE_DESCRIPTION("Em28xx Input driver"); | |
734 | ||
735 | module_init(em28xx_rc_register); | |
736 | module_exit(em28xx_rc_unregister); |