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 | 43 | #define i2cdprintk(fmt, arg...) \ |
6ea54d93 | 44 | if (ir_debug) { \ |
1df8e986 | 45 | printk(KERN_DEBUG "%s/ir: " fmt, ir->name , ## arg); \ |
6ea54d93 | 46 | } |
d5e52653 | 47 | |
a924a499 MCC |
48 | #define dprintk(fmt, arg...) \ |
49 | if (ir_debug) { \ | |
50 | printk(KERN_DEBUG "%s/ir: " fmt, ir->name , ## arg); \ | |
51 | } | |
52 | ||
53 | /********************************************************** | |
54 | Polling structure used by em28xx IR's | |
55 | **********************************************************/ | |
56 | ||
4b92253a DH |
57 | struct em28xx_ir_poll_result { |
58 | unsigned int toggle_bit:1; | |
59 | unsigned int read_count:7; | |
60 | u8 rc_address; | |
61 | u8 rc_data[4]; /* 1 byte on em2860/2880, 4 on em2874 */ | |
62 | }; | |
63 | ||
a924a499 MCC |
64 | struct em28xx_IR { |
65 | struct em28xx *dev; | |
d8b4b582 | 66 | struct rc_dev *rc; |
a924a499 MCC |
67 | char name[32]; |
68 | char phys[32]; | |
69 | ||
70 | /* poll external decoder */ | |
71 | int polling; | |
f263bac9 | 72 | struct delayed_work work; |
0278155c | 73 | unsigned int full_code:1; |
4b92253a | 74 | unsigned int last_readcount; |
a924a499 | 75 | |
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 | |
c8793b03 | 83 | int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
e43f14af MR |
84 | { |
85 | unsigned char b; | |
86 | ||
87 | /* poll IR chip */ | |
c668f32d | 88 | if (1 != i2c_master_recv(ir->c, &b, 1)) { |
a924a499 | 89 | i2cdprintk("read error\n"); |
e43f14af MR |
90 | return -EIO; |
91 | } | |
92 | ||
93 | /* it seems that 0xFE indicates that a button is still hold | |
4f9c05aa MCC |
94 | down, while 0xff indicates that no button is hold |
95 | down. 0xfe sequences are sometimes interrupted by 0xFF */ | |
e43f14af | 96 | |
a924a499 | 97 | i2cdprintk("key %02x\n", b); |
e43f14af | 98 | |
4f9c05aa | 99 | if (b == 0xff) |
e43f14af MR |
100 | return 0; |
101 | ||
4f9c05aa | 102 | if (b == 0xfe) |
e43f14af MR |
103 | /* keep old data */ |
104 | return 1; | |
105 | ||
106 | *ir_key = b; | |
107 | *ir_raw = b; | |
108 | return 1; | |
109 | } | |
110 | ||
c8793b03 | 111 | int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
d5e52653 MCC |
112 | { |
113 | unsigned char buf[2]; | |
b779974b MCC |
114 | u16 code; |
115 | int size; | |
d5e52653 MCC |
116 | |
117 | /* poll IR chip */ | |
b779974b MCC |
118 | size = i2c_master_recv(ir->c, buf, sizeof(buf)); |
119 | ||
120 | if (size != 2) | |
d5e52653 MCC |
121 | return -EIO; |
122 | ||
123 | /* Does eliminate repeated parity code */ | |
6ea54d93 | 124 | if (buf[1] == 0xff) |
d5e52653 MCC |
125 | return 0; |
126 | ||
6ea54d93 | 127 | ir->old = buf[1]; |
d5e52653 | 128 | |
b779974b MCC |
129 | /* |
130 | * Rearranges bits to the right order. | |
131 | * The bit order were determined experimentally by using | |
132 | * The original Hauppauge Grey IR and another RC5 that uses addr=0x08 | |
133 | * The RC5 code has 14 bits, but we've experimentally determined | |
134 | * the meaning for only 11 bits. | |
135 | * So, the code translation is not complete. Yet, it is enough to | |
136 | * work with the provided RC5 IR. | |
137 | */ | |
138 | code = | |
139 | ((buf[0] & 0x01) ? 0x0020 : 0) | /* 0010 0000 */ | |
140 | ((buf[0] & 0x02) ? 0x0010 : 0) | /* 0001 0000 */ | |
141 | ((buf[0] & 0x04) ? 0x0008 : 0) | /* 0000 1000 */ | |
142 | ((buf[0] & 0x08) ? 0x0004 : 0) | /* 0000 0100 */ | |
143 | ((buf[0] & 0x10) ? 0x0002 : 0) | /* 0000 0010 */ | |
144 | ((buf[0] & 0x20) ? 0x0001 : 0) | /* 0000 0001 */ | |
145 | ((buf[1] & 0x08) ? 0x1000 : 0) | /* 0001 0000 */ | |
146 | ((buf[1] & 0x10) ? 0x0800 : 0) | /* 0000 1000 */ | |
147 | ((buf[1] & 0x20) ? 0x0400 : 0) | /* 0000 0100 */ | |
148 | ((buf[1] & 0x40) ? 0x0200 : 0) | /* 0000 0010 */ | |
149 | ((buf[1] & 0x80) ? 0x0100 : 0); /* 0000 0001 */ | |
150 | ||
151 | i2cdprintk("ir hauppauge (em2840): code=0x%02x (rcv=0x%02x%02x)\n", | |
152 | code, buf[1], buf[0]); | |
d5e52653 MCC |
153 | |
154 | /* return key */ | |
155 | *ir_key = code; | |
156 | *ir_raw = code; | |
157 | return 1; | |
158 | } | |
159 | ||
c8793b03 MCC |
160 | int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key, |
161 | u32 *ir_raw) | |
366cc64b MR |
162 | { |
163 | unsigned char buf[3]; | |
164 | ||
165 | /* poll IR chip */ | |
166 | ||
c668f32d | 167 | if (3 != i2c_master_recv(ir->c, buf, 3)) { |
a924a499 | 168 | i2cdprintk("read error\n"); |
366cc64b MR |
169 | return -EIO; |
170 | } | |
171 | ||
a924a499 | 172 | i2cdprintk("key %02x\n", buf[2]&0x3f); |
6ea54d93 | 173 | if (buf[0] != 0x00) |
366cc64b | 174 | return 0; |
366cc64b MR |
175 | |
176 | *ir_key = buf[2]&0x3f; | |
177 | *ir_raw = buf[2]&0x3f; | |
178 | ||
179 | return 1; | |
180 | } | |
181 | ||
ca39d84d MA |
182 | int em28xx_get_key_winfast_usbii_deluxe(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
183 | { | |
184 | unsigned char subaddr, keydetect, key; | |
185 | ||
186 | struct i2c_msg msg[] = { { .addr = ir->c->addr, .flags = 0, .buf = &subaddr, .len = 1}, | |
187 | ||
188 | { .addr = ir->c->addr, .flags = I2C_M_RD, .buf = &keydetect, .len = 1} }; | |
189 | ||
190 | subaddr = 0x10; | |
191 | if (2 != i2c_transfer(ir->c->adapter, msg, 2)) { | |
192 | i2cdprintk("read error\n"); | |
193 | return -EIO; | |
194 | } | |
195 | if (keydetect == 0x00) | |
196 | return 0; | |
197 | ||
198 | subaddr = 0x00; | |
199 | msg[1].buf = &key; | |
200 | if (2 != i2c_transfer(ir->c->adapter, msg, 2)) { | |
201 | i2cdprintk("read error\n"); | |
202 | return -EIO; | |
203 | } | |
204 | if (key == 0x00) | |
205 | return 0; | |
206 | ||
207 | *ir_key = key; | |
208 | *ir_raw = key; | |
209 | return 1; | |
210 | } | |
211 | ||
a924a499 MCC |
212 | /********************************************************** |
213 | Poll based get keycode functions | |
214 | **********************************************************/ | |
215 | ||
4b92253a DH |
216 | /* This is for the em2860/em2880 */ |
217 | static int default_polling_getkey(struct em28xx_IR *ir, | |
218 | struct em28xx_ir_poll_result *poll_result) | |
a924a499 MCC |
219 | { |
220 | struct em28xx *dev = ir->dev; | |
221 | int rc; | |
4b92253a | 222 | u8 msg[3] = { 0, 0, 0 }; |
a924a499 | 223 | |
0a6b8a85 MCC |
224 | /* Read key toggle, brand, and key code |
225 | on registers 0x45, 0x46 and 0x47 | |
226 | */ | |
a924a499 | 227 | rc = dev->em28xx_read_reg_req_len(dev, 0, EM28XX_R45_IR, |
0a6b8a85 | 228 | msg, sizeof(msg)); |
a924a499 MCC |
229 | if (rc < 0) |
230 | return rc; | |
231 | ||
4b92253a DH |
232 | /* Infrared toggle (Reg 0x45[7]) */ |
233 | poll_result->toggle_bit = (msg[0] >> 7); | |
234 | ||
235 | /* Infrared read count (Reg 0x45[6:0] */ | |
236 | poll_result->read_count = (msg[0] & 0x7f); | |
237 | ||
238 | /* Remote Control Address (Reg 0x46) */ | |
239 | poll_result->rc_address = msg[1]; | |
240 | ||
241 | /* Remote Control Data (Reg 0x47) */ | |
242 | poll_result->rc_data[0] = msg[2]; | |
243 | ||
244 | return 0; | |
245 | } | |
246 | ||
247 | static int em2874_polling_getkey(struct em28xx_IR *ir, | |
248 | struct em28xx_ir_poll_result *poll_result) | |
249 | { | |
250 | struct em28xx *dev = ir->dev; | |
251 | int rc; | |
252 | u8 msg[5] = { 0, 0, 0, 0, 0 }; | |
253 | ||
254 | /* Read key toggle, brand, and key code | |
255 | on registers 0x51-55 | |
256 | */ | |
257 | rc = dev->em28xx_read_reg_req_len(dev, 0, EM2874_R51_IR, | |
258 | msg, sizeof(msg)); | |
259 | if (rc < 0) | |
260 | return rc; | |
261 | ||
262 | /* Infrared toggle (Reg 0x51[7]) */ | |
263 | poll_result->toggle_bit = (msg[0] >> 7); | |
264 | ||
265 | /* Infrared read count (Reg 0x51[6:0] */ | |
266 | poll_result->read_count = (msg[0] & 0x7f); | |
267 | ||
268 | /* Remote Control Address (Reg 0x52) */ | |
269 | poll_result->rc_address = msg[1]; | |
270 | ||
271 | /* Remote Control Data (Reg 0x53-55) */ | |
272 | poll_result->rc_data[0] = msg[2]; | |
273 | poll_result->rc_data[1] = msg[3]; | |
274 | poll_result->rc_data[2] = msg[4]; | |
275 | ||
276 | return 0; | |
a924a499 MCC |
277 | } |
278 | ||
279 | /********************************************************** | |
280 | Polling code for em28xx | |
281 | **********************************************************/ | |
282 | ||
283 | static void em28xx_ir_handle_key(struct em28xx_IR *ir) | |
284 | { | |
4b92253a | 285 | int result; |
4b92253a DH |
286 | struct em28xx_ir_poll_result poll_result; |
287 | ||
288 | /* read the registers containing the IR status */ | |
289 | result = ir->get_key(ir, &poll_result); | |
603044d8 | 290 | if (unlikely(result < 0)) { |
4b92253a | 291 | dprintk("ir->get_key() failed %d\n", result); |
a924a499 | 292 | return; |
4b92253a | 293 | } |
a924a499 | 294 | |
603044d8 MCC |
295 | if (unlikely(poll_result.read_count != ir->last_readcount)) { |
296 | dprintk("%s: toggle: %d, count: %d, key 0x%02x%02x\n", __func__, | |
297 | poll_result.toggle_bit, poll_result.read_count, | |
298 | poll_result.rc_address, poll_result.rc_data[0]); | |
a469585b | 299 | if (ir->full_code) |
ca86674b | 300 | rc_keydown(ir->rc, |
a469585b DH |
301 | poll_result.rc_address << 8 | |
302 | poll_result.rc_data[0], | |
303 | poll_result.toggle_bit); | |
304 | else | |
ca86674b | 305 | rc_keydown(ir->rc, |
a469585b DH |
306 | poll_result.rc_data[0], |
307 | poll_result.toggle_bit); | |
a469585b | 308 | |
20ae9742 MCC |
309 | if (ir->dev->chip_id == CHIP_ID_EM2874 || |
310 | ir->dev->chip_id == CHIP_ID_EM2884) | |
603044d8 MCC |
311 | /* The em2874 clears the readcount field every time the |
312 | register is read. The em2860/2880 datasheet says that it | |
313 | is supposed to clear the readcount, but it doesn't. So with | |
314 | the em2874, we are looking for a non-zero read count as | |
315 | opposed to a readcount that is incrementing */ | |
316 | ir->last_readcount = 0; | |
317 | else | |
318 | ir->last_readcount = poll_result.read_count; | |
319 | } | |
a924a499 MCC |
320 | } |
321 | ||
a924a499 MCC |
322 | static void em28xx_ir_work(struct work_struct *work) |
323 | { | |
f263bac9 | 324 | struct em28xx_IR *ir = container_of(work, struct em28xx_IR, work.work); |
a924a499 MCC |
325 | |
326 | em28xx_ir_handle_key(ir); | |
f263bac9 | 327 | schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling)); |
a924a499 MCC |
328 | } |
329 | ||
d8b4b582 | 330 | static int em28xx_ir_start(struct rc_dev *rc) |
a924a499 | 331 | { |
d8b4b582 | 332 | struct em28xx_IR *ir = rc->priv; |
c373cabf | 333 | |
f263bac9 JD |
334 | INIT_DELAYED_WORK(&ir->work, em28xx_ir_work); |
335 | schedule_delayed_work(&ir->work, 0); | |
c373cabf MCC |
336 | |
337 | return 0; | |
a924a499 MCC |
338 | } |
339 | ||
d8b4b582 | 340 | static void em28xx_ir_stop(struct rc_dev *rc) |
a924a499 | 341 | { |
d8b4b582 | 342 | struct em28xx_IR *ir = rc->priv; |
c373cabf | 343 | |
f263bac9 | 344 | cancel_delayed_work_sync(&ir->work); |
a924a499 MCC |
345 | } |
346 | ||
52b66144 | 347 | int em28xx_ir_change_protocol(struct rc_dev *rc_dev, u64 rc_type) |
a924a499 | 348 | { |
950b0f5a | 349 | int rc = 0; |
d8b4b582 | 350 | struct em28xx_IR *ir = rc_dev->priv; |
950b0f5a MCC |
351 | struct em28xx *dev = ir->dev; |
352 | u8 ir_config = EM2874_IR_RC5; | |
1bad429e MCC |
353 | |
354 | /* Adjust xclk based o IR table for RC5/NEC tables */ | |
950b0f5a | 355 | |
52b66144 | 356 | if (rc_type == RC_TYPE_RC5) { |
1bad429e MCC |
357 | dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE; |
358 | ir->full_code = 1; | |
52b66144 | 359 | } else if (rc_type == RC_TYPE_NEC) { |
1bad429e MCC |
360 | dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE; |
361 | ir_config = EM2874_IR_NEC; | |
362 | ir->full_code = 1; | |
52b66144 | 363 | } else if (rc_type != RC_TYPE_UNKNOWN) |
950b0f5a MCC |
364 | rc = -EINVAL; |
365 | ||
1bad429e MCC |
366 | em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk, |
367 | EM28XX_XCLK_IR_RC5_MODE); | |
a924a499 | 368 | |
4b92253a DH |
369 | /* Setup the proper handler based on the chip */ |
370 | switch (dev->chip_id) { | |
371 | case CHIP_ID_EM2860: | |
372 | case CHIP_ID_EM2883: | |
373 | ir->get_key = default_polling_getkey; | |
91812fa7 | 374 | break; |
20ae9742 | 375 | case CHIP_ID_EM2884: |
4b92253a | 376 | case CHIP_ID_EM2874: |
a24ec448 | 377 | case CHIP_ID_EM28174: |
4b92253a | 378 | ir->get_key = em2874_polling_getkey; |
4b92253a DH |
379 | em28xx_write_regs(dev, EM2874_R50_IR_CONFIG, &ir_config, 1); |
380 | break; | |
381 | default: | |
20ae9742 MCC |
382 | printk("Unrecognized em28xx chip id 0x%02x: IR not supported\n", |
383 | dev->chip_id); | |
950b0f5a MCC |
384 | rc = -EINVAL; |
385 | } | |
386 | ||
387 | return rc; | |
388 | } | |
389 | ||
9d9f479b EG |
390 | void em28xx_register_i2c_ir(struct em28xx *dev) |
391 | { | |
392 | /* Leadtek winfast tv USBII deluxe can find a non working IR-device */ | |
393 | /* at address 0x18, so if that address is needed for another board in */ | |
394 | /* the future, please put it after 0x1f. */ | |
395 | struct i2c_board_info info; | |
396 | const unsigned short addr_list[] = { | |
397 | 0x1f, 0x30, 0x47, I2C_CLIENT_END | |
398 | }; | |
399 | ||
400 | memset(&info, 0, sizeof(struct i2c_board_info)); | |
401 | memset(&dev->init_data, 0, sizeof(dev->init_data)); | |
402 | strlcpy(info.type, "ir_video", I2C_NAME_SIZE); | |
403 | ||
404 | /* detect & configure */ | |
405 | switch (dev->model) { | |
406 | case EM2800_BOARD_TERRATEC_CINERGY_200: | |
407 | case EM2820_BOARD_TERRATEC_CINERGY_250: | |
408 | dev->init_data.ir_codes = RC_MAP_EM_TERRATEC; | |
409 | dev->init_data.get_key = em28xx_get_key_terratec; | |
410 | dev->init_data.name = "i2c IR (EM28XX Terratec)"; | |
411 | break; | |
412 | case EM2820_BOARD_PINNACLE_USB_2: | |
413 | dev->init_data.ir_codes = RC_MAP_PINNACLE_GREY; | |
414 | dev->init_data.get_key = em28xx_get_key_pinnacle_usb_grey; | |
415 | dev->init_data.name = "i2c IR (EM28XX Pinnacle PCTV)"; | |
416 | break; | |
417 | case EM2820_BOARD_HAUPPAUGE_WINTV_USB_2: | |
418 | dev->init_data.ir_codes = RC_MAP_HAUPPAUGE; | |
419 | dev->init_data.get_key = em28xx_get_key_em_haup; | |
420 | dev->init_data.name = "i2c IR (EM2840 Hauppauge)"; | |
421 | break; | |
422 | case EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE: | |
423 | dev->init_data.ir_codes = RC_MAP_WINFAST_USBII_DELUXE; | |
424 | dev->init_data.get_key = em28xx_get_key_winfast_usbii_deluxe; | |
425 | dev->init_data.name = "i2c IR (EM2820 Winfast TV USBII Deluxe)"; | |
426 | break; | |
427 | } | |
428 | ||
429 | if (dev->init_data.name) | |
430 | info.platform_data = &dev->init_data; | |
431 | i2c_new_probed_device(&dev->i2c_adap, &info, addr_list, NULL); | |
432 | } | |
433 | ||
950b0f5a MCC |
434 | int em28xx_ir_init(struct em28xx *dev) |
435 | { | |
436 | struct em28xx_IR *ir; | |
d8b4b582 | 437 | struct rc_dev *rc; |
950b0f5a MCC |
438 | int err = -ENOMEM; |
439 | ||
440 | if (dev->board.ir_codes == NULL) { | |
441 | /* No remote control support */ | |
442 | return 0; | |
a924a499 MCC |
443 | } |
444 | ||
950b0f5a | 445 | ir = kzalloc(sizeof(*ir), GFP_KERNEL); |
d8b4b582 DH |
446 | rc = rc_allocate_device(); |
447 | if (!ir || !rc) | |
950b0f5a MCC |
448 | goto err_out_free; |
449 | ||
450 | /* record handles to ourself */ | |
451 | ir->dev = dev; | |
452 | dev->ir = ir; | |
d8b4b582 | 453 | ir->rc = rc; |
950b0f5a MCC |
454 | |
455 | /* | |
456 | * em2874 supports more protocols. For now, let's just announce | |
457 | * the two protocols that were already tested | |
458 | */ | |
52b66144 | 459 | rc->allowed_protos = RC_TYPE_RC5 | RC_TYPE_NEC; |
d8b4b582 DH |
460 | rc->priv = ir; |
461 | rc->change_protocol = em28xx_ir_change_protocol; | |
462 | rc->open = em28xx_ir_start; | |
463 | rc->close = em28xx_ir_stop; | |
c373cabf MCC |
464 | |
465 | /* By default, keep protocol field untouched */ | |
52b66144 | 466 | err = em28xx_ir_change_protocol(rc, RC_TYPE_UNKNOWN); |
c373cabf MCC |
467 | if (err) |
468 | goto err_out_free; | |
950b0f5a | 469 | |
4b92253a DH |
470 | /* This is how often we ask the chip for IR information */ |
471 | ir->polling = 100; /* ms */ | |
472 | ||
a924a499 MCC |
473 | /* init input device */ |
474 | snprintf(ir->name, sizeof(ir->name), "em28xx IR (%s)", | |
475 | dev->name); | |
476 | ||
477 | usb_make_path(dev->udev, ir->phys, sizeof(ir->phys)); | |
478 | strlcat(ir->phys, "/input0", sizeof(ir->phys)); | |
479 | ||
d8b4b582 DH |
480 | rc->input_name = ir->name; |
481 | rc->input_phys = ir->phys; | |
482 | rc->input_id.bustype = BUS_USB; | |
483 | rc->input_id.version = 1; | |
484 | rc->input_id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor); | |
485 | rc->input_id.product = le16_to_cpu(dev->udev->descriptor.idProduct); | |
486 | rc->dev.parent = &dev->udev->dev; | |
487 | rc->map_name = dev->board.ir_codes; | |
488 | rc->driver_name = MODULE_NAME; | |
a924a499 MCC |
489 | |
490 | /* all done */ | |
d8b4b582 | 491 | err = rc_register_device(rc); |
a924a499 MCC |
492 | if (err) |
493 | goto err_out_stop; | |
494 | ||
2fd6f8d1 EG |
495 | em28xx_register_i2c_ir(dev); |
496 | ||
497 | #if defined(CONFIG_MODULES) && defined(MODULE) | |
498 | if (dev->board.has_ir_i2c) | |
499 | request_module("ir-kbd-i2c"); | |
500 | #endif | |
501 | if (dev->board.has_snapshot_button) | |
502 | em28xx_register_snapshot_button(dev); | |
503 | ||
a924a499 | 504 | return 0; |
d8b4b582 | 505 | |
a924a499 | 506 | err_out_stop: |
a924a499 MCC |
507 | dev->ir = NULL; |
508 | err_out_free: | |
d8b4b582 | 509 | rc_free_device(rc); |
a924a499 MCC |
510 | kfree(ir); |
511 | return err; | |
512 | } | |
513 | ||
514 | int em28xx_ir_fini(struct em28xx *dev) | |
515 | { | |
516 | struct em28xx_IR *ir = dev->ir; | |
517 | ||
2fd6f8d1 EG |
518 | em28xx_deregister_snapshot_button(dev); |
519 | ||
a924a499 MCC |
520 | /* skip detach on non attached boards */ |
521 | if (!ir) | |
522 | return 0; | |
523 | ||
6d514774 MCC |
524 | if (ir->rc) |
525 | rc_unregister_device(ir->rc); | |
a924a499 MCC |
526 | |
527 | /* done */ | |
6d514774 | 528 | kfree(ir); |
a924a499 MCC |
529 | dev->ir = NULL; |
530 | return 0; | |
531 | } | |
532 | ||
533 | /********************************************************** | |
534 | Handle Webcam snapshot button | |
535 | **********************************************************/ | |
536 | ||
a9fc52bc DH |
537 | static void em28xx_query_sbutton(struct work_struct *work) |
538 | { | |
539 | /* Poll the register and see if the button is depressed */ | |
540 | struct em28xx *dev = | |
541 | container_of(work, struct em28xx, sbutton_query_work.work); | |
542 | int ret; | |
543 | ||
544 | ret = em28xx_read_reg(dev, EM28XX_R0C_USBSUSP); | |
545 | ||
546 | if (ret & EM28XX_R0C_USBSUSP_SNAPSHOT) { | |
547 | u8 cleared; | |
548 | /* Button is depressed, clear the register */ | |
549 | cleared = ((u8) ret) & ~EM28XX_R0C_USBSUSP_SNAPSHOT; | |
550 | em28xx_write_regs(dev, EM28XX_R0C_USBSUSP, &cleared, 1); | |
551 | ||
552 | /* Not emulate the keypress */ | |
553 | input_report_key(dev->sbutton_input_dev, EM28XX_SNAPSHOT_KEY, | |
554 | 1); | |
555 | /* Now unpress the key */ | |
556 | input_report_key(dev->sbutton_input_dev, EM28XX_SNAPSHOT_KEY, | |
557 | 0); | |
558 | } | |
559 | ||
560 | /* Schedule next poll */ | |
561 | schedule_delayed_work(&dev->sbutton_query_work, | |
562 | msecs_to_jiffies(EM28XX_SBUTTON_QUERY_INTERVAL)); | |
563 | } | |
564 | ||
565 | void em28xx_register_snapshot_button(struct em28xx *dev) | |
566 | { | |
567 | struct input_dev *input_dev; | |
568 | int err; | |
569 | ||
570 | em28xx_info("Registering snapshot button...\n"); | |
571 | input_dev = input_allocate_device(); | |
572 | if (!input_dev) { | |
573 | em28xx_errdev("input_allocate_device failed\n"); | |
574 | return; | |
575 | } | |
576 | ||
577 | usb_make_path(dev->udev, dev->snapshot_button_path, | |
578 | sizeof(dev->snapshot_button_path)); | |
579 | strlcat(dev->snapshot_button_path, "/sbutton", | |
580 | sizeof(dev->snapshot_button_path)); | |
581 | INIT_DELAYED_WORK(&dev->sbutton_query_work, em28xx_query_sbutton); | |
582 | ||
583 | input_dev->name = "em28xx snapshot button"; | |
584 | input_dev->phys = dev->snapshot_button_path; | |
585 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); | |
586 | set_bit(EM28XX_SNAPSHOT_KEY, input_dev->keybit); | |
587 | input_dev->keycodesize = 0; | |
588 | input_dev->keycodemax = 0; | |
589 | input_dev->id.bustype = BUS_USB; | |
590 | input_dev->id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor); | |
591 | input_dev->id.product = le16_to_cpu(dev->udev->descriptor.idProduct); | |
592 | input_dev->id.version = 1; | |
593 | input_dev->dev.parent = &dev->udev->dev; | |
594 | ||
595 | err = input_register_device(input_dev); | |
596 | if (err) { | |
597 | em28xx_errdev("input_register_device failed\n"); | |
598 | input_free_device(input_dev); | |
599 | return; | |
600 | } | |
601 | ||
602 | dev->sbutton_input_dev = input_dev; | |
603 | schedule_delayed_work(&dev->sbutton_query_work, | |
604 | msecs_to_jiffies(EM28XX_SBUTTON_QUERY_INTERVAL)); | |
605 | return; | |
606 | ||
607 | } | |
608 | ||
609 | void em28xx_deregister_snapshot_button(struct em28xx *dev) | |
610 | { | |
611 | if (dev->sbutton_input_dev != NULL) { | |
612 | em28xx_info("Deregistering snapshot button\n"); | |
afe2c511 | 613 | cancel_delayed_work_sync(&dev->sbutton_query_work); |
a9fc52bc DH |
614 | input_unregister_device(dev->sbutton_input_dev); |
615 | dev->sbutton_input_dev = NULL; | |
616 | } | |
617 | return; | |
618 | } |