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 | ||
8314d402 MCC |
24 | #include "em28xx.h" |
25 | ||
d5e52653 | 26 | #include <linux/module.h> |
d5e52653 MCC |
27 | #include <linux/init.h> |
28 | #include <linux/delay.h> | |
d5e52653 | 29 | #include <linux/interrupt.h> |
d5e52653 | 30 | #include <linux/usb.h> |
5a0e3ad6 | 31 | #include <linux/slab.h> |
120703f9 | 32 | #include <linux/bitrev.h> |
d5e52653 | 33 | |
0ff950a7 FS |
34 | #define EM28XX_SNAPSHOT_KEY KEY_CAMERA |
35 | #define EM28XX_BUTTONS_DEBOUNCED_QUERY_INTERVAL 500 /* [ms] */ | |
36 | #define EM28XX_BUTTONS_VOLATILE_QUERY_INTERVAL 100 /* [ms] */ | |
a9fc52bc | 37 | |
c8793b03 | 38 | static unsigned int ir_debug; |
d5e52653 | 39 | module_param(ir_debug, int, 0644); |
6ea54d93 | 40 | MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]"); |
d5e52653 | 41 | |
727e625c MCC |
42 | #define MODULE_NAME "em28xx" |
43 | ||
ce8591ff MCC |
44 | #define dprintk( fmt, arg...) do { \ |
45 | if (ir_debug) \ | |
29b05e22 | 46 | dev_printk(KERN_DEBUG, &ir->dev->intf->dev, \ |
ce8591ff MCC |
47 | "input: %s: " fmt, __func__, ## arg); \ |
48 | } while (0) | |
a924a499 MCC |
49 | |
50 | /********************************************************** | |
51 | Polling structure used by em28xx IR's | |
52 | **********************************************************/ | |
53 | ||
4b92253a DH |
54 | struct em28xx_ir_poll_result { |
55 | unsigned int toggle_bit:1; | |
56 | unsigned int read_count:7; | |
105e3687 | 57 | |
120703f9 | 58 | enum rc_type protocol; |
105e3687 | 59 | u32 scancode; |
4b92253a DH |
60 | }; |
61 | ||
a924a499 MCC |
62 | struct em28xx_IR { |
63 | struct em28xx *dev; | |
d8b4b582 | 64 | struct rc_dev *rc; |
a924a499 MCC |
65 | char name[32]; |
66 | char phys[32]; | |
67 | ||
768da3db | 68 | /* poll decoder */ |
a924a499 | 69 | int polling; |
f263bac9 | 70 | struct delayed_work work; |
0278155c | 71 | unsigned int full_code:1; |
4b92253a | 72 | unsigned int last_readcount; |
105e3687 | 73 | u64 rc_type; |
a924a499 | 74 | |
78e719a5 | 75 | struct i2c_client *i2c_client; |
768da3db | 76 | |
120703f9 | 77 | int (*get_key_i2c)(struct i2c_client *ir, enum rc_type *protocol, u32 *scancode); |
4b92253a | 78 | int (*get_key)(struct em28xx_IR *, struct em28xx_ir_poll_result *); |
a924a499 MCC |
79 | }; |
80 | ||
81 | /********************************************************** | |
82 | I2C IR based get keycodes - should be used with ir-kbd-i2c | |
83 | **********************************************************/ | |
d5e52653 | 84 | |
120703f9 DH |
85 | static int em28xx_get_key_terratec(struct i2c_client *i2c_dev, |
86 | enum rc_type *protocol, u32 *scancode) | |
e43f14af MR |
87 | { |
88 | unsigned char b; | |
89 | ||
90 | /* poll IR chip */ | |
768da3db | 91 | if (1 != i2c_master_recv(i2c_dev, &b, 1)) |
e43f14af | 92 | return -EIO; |
e43f14af MR |
93 | |
94 | /* it seems that 0xFE indicates that a button is still hold | |
450c7dd6 | 95 | down, while 0xff indicates that no button is hold down. */ |
e43f14af | 96 | |
4f9c05aa | 97 | if (b == 0xff) |
e43f14af MR |
98 | return 0; |
99 | ||
4f9c05aa | 100 | if (b == 0xfe) |
e43f14af MR |
101 | /* keep old data */ |
102 | return 1; | |
103 | ||
120703f9 DH |
104 | *protocol = RC_TYPE_UNKNOWN; |
105 | *scancode = b; | |
e43f14af MR |
106 | return 1; |
107 | } | |
108 | ||
120703f9 DH |
109 | static int em28xx_get_key_em_haup(struct i2c_client *i2c_dev, |
110 | enum rc_type *protocol, u32 *scancode) | |
d5e52653 MCC |
111 | { |
112 | unsigned char buf[2]; | |
b779974b | 113 | int size; |
d5e52653 MCC |
114 | |
115 | /* poll IR chip */ | |
768da3db | 116 | size = i2c_master_recv(i2c_dev, buf, sizeof(buf)); |
b779974b MCC |
117 | |
118 | if (size != 2) | |
d5e52653 MCC |
119 | return -EIO; |
120 | ||
121 | /* Does eliminate repeated parity code */ | |
6ea54d93 | 122 | if (buf[1] == 0xff) |
d5e52653 MCC |
123 | return 0; |
124 | ||
b779974b MCC |
125 | /* |
126 | * Rearranges bits to the right order. | |
127 | * The bit order were determined experimentally by using | |
128 | * The original Hauppauge Grey IR and another RC5 that uses addr=0x08 | |
129 | * The RC5 code has 14 bits, but we've experimentally determined | |
130 | * the meaning for only 11 bits. | |
131 | * So, the code translation is not complete. Yet, it is enough to | |
132 | * work with the provided RC5 IR. | |
133 | */ | |
120703f9 DH |
134 | *protocol = RC_TYPE_RC5; |
135 | *scancode = (bitrev8(buf[1]) & 0x1f) << 8 | bitrev8(buf[0]) >> 2; | |
d5e52653 MCC |
136 | return 1; |
137 | } | |
138 | ||
768da3db | 139 | static int em28xx_get_key_pinnacle_usb_grey(struct i2c_client *i2c_dev, |
120703f9 | 140 | enum rc_type *protocol, u32 *scancode) |
366cc64b MR |
141 | { |
142 | unsigned char buf[3]; | |
143 | ||
144 | /* poll IR chip */ | |
145 | ||
768da3db | 146 | if (3 != i2c_master_recv(i2c_dev, buf, 3)) |
366cc64b | 147 | return -EIO; |
366cc64b | 148 | |
6ea54d93 | 149 | if (buf[0] != 0x00) |
366cc64b | 150 | return 0; |
366cc64b | 151 | |
120703f9 DH |
152 | *protocol = RC_TYPE_UNKNOWN; |
153 | *scancode = buf[2] & 0x3f; | |
366cc64b MR |
154 | return 1; |
155 | } | |
156 | ||
768da3db | 157 | static int em28xx_get_key_winfast_usbii_deluxe(struct i2c_client *i2c_dev, |
120703f9 | 158 | enum rc_type *protocol, u32 *scancode) |
ca39d84d MA |
159 | { |
160 | unsigned char subaddr, keydetect, key; | |
161 | ||
768da3db | 162 | struct i2c_msg msg[] = { { .addr = i2c_dev->addr, .flags = 0, .buf = &subaddr, .len = 1}, |
450c7dd6 | 163 | { .addr = i2c_dev->addr, .flags = I2C_M_RD, .buf = &keydetect, .len = 1} }; |
ca39d84d MA |
164 | |
165 | subaddr = 0x10; | |
768da3db | 166 | if (2 != i2c_transfer(i2c_dev->adapter, msg, 2)) |
ca39d84d | 167 | return -EIO; |
ca39d84d MA |
168 | if (keydetect == 0x00) |
169 | return 0; | |
170 | ||
171 | subaddr = 0x00; | |
172 | msg[1].buf = &key; | |
768da3db | 173 | if (2 != i2c_transfer(i2c_dev->adapter, msg, 2)) |
62ec3f86 | 174 | return -EIO; |
ca39d84d MA |
175 | if (key == 0x00) |
176 | return 0; | |
177 | ||
120703f9 DH |
178 | *protocol = RC_TYPE_UNKNOWN; |
179 | *scancode = key; | |
ca39d84d MA |
180 | return 1; |
181 | } | |
182 | ||
a924a499 MCC |
183 | /********************************************************** |
184 | Poll based get keycode functions | |
185 | **********************************************************/ | |
186 | ||
4b92253a DH |
187 | /* This is for the em2860/em2880 */ |
188 | static int default_polling_getkey(struct em28xx_IR *ir, | |
189 | struct em28xx_ir_poll_result *poll_result) | |
a924a499 MCC |
190 | { |
191 | struct em28xx *dev = ir->dev; | |
192 | int rc; | |
4b92253a | 193 | u8 msg[3] = { 0, 0, 0 }; |
a924a499 | 194 | |
0a6b8a85 MCC |
195 | /* Read key toggle, brand, and key code |
196 | on registers 0x45, 0x46 and 0x47 | |
197 | */ | |
a924a499 | 198 | rc = dev->em28xx_read_reg_req_len(dev, 0, EM28XX_R45_IR, |
0a6b8a85 | 199 | msg, sizeof(msg)); |
a924a499 MCC |
200 | if (rc < 0) |
201 | return rc; | |
202 | ||
4b92253a DH |
203 | /* Infrared toggle (Reg 0x45[7]) */ |
204 | poll_result->toggle_bit = (msg[0] >> 7); | |
205 | ||
206 | /* Infrared read count (Reg 0x45[6:0] */ | |
207 | poll_result->read_count = (msg[0] & 0x7f); | |
208 | ||
105e3687 | 209 | /* Remote Control Address/Data (Regs 0x46/0x47) */ |
120703f9 DH |
210 | switch (ir->rc_type) { |
211 | case RC_BIT_RC5: | |
212 | poll_result->protocol = RC_TYPE_RC5; | |
213 | poll_result->scancode = RC_SCANCODE_RC5(msg[1], msg[2]); | |
214 | break; | |
215 | ||
216 | case RC_BIT_NEC: | |
217 | poll_result->protocol = RC_TYPE_NEC; | |
218 | poll_result->scancode = RC_SCANCODE_NEC(msg[1], msg[2]); | |
219 | break; | |
220 | ||
221 | default: | |
222 | poll_result->protocol = RC_TYPE_UNKNOWN; | |
223 | poll_result->scancode = msg[1] << 8 | msg[2]; | |
224 | break; | |
225 | } | |
4b92253a DH |
226 | |
227 | return 0; | |
228 | } | |
229 | ||
230 | static int em2874_polling_getkey(struct em28xx_IR *ir, | |
231 | struct em28xx_ir_poll_result *poll_result) | |
232 | { | |
233 | struct em28xx *dev = ir->dev; | |
234 | int rc; | |
235 | u8 msg[5] = { 0, 0, 0, 0, 0 }; | |
236 | ||
237 | /* Read key toggle, brand, and key code | |
238 | on registers 0x51-55 | |
239 | */ | |
240 | rc = dev->em28xx_read_reg_req_len(dev, 0, EM2874_R51_IR, | |
241 | msg, sizeof(msg)); | |
242 | if (rc < 0) | |
243 | return rc; | |
244 | ||
245 | /* Infrared toggle (Reg 0x51[7]) */ | |
246 | poll_result->toggle_bit = (msg[0] >> 7); | |
247 | ||
248 | /* Infrared read count (Reg 0x51[6:0] */ | |
249 | poll_result->read_count = (msg[0] & 0x7f); | |
250 | ||
105e3687 MCC |
251 | /* |
252 | * Remote Control Address (Reg 0x52) | |
253 | * Remote Control Data (Reg 0x53-0x55) | |
254 | */ | |
255 | switch (ir->rc_type) { | |
256 | case RC_BIT_RC5: | |
120703f9 DH |
257 | poll_result->protocol = RC_TYPE_RC5; |
258 | poll_result->scancode = RC_SCANCODE_RC5(msg[1], msg[2]); | |
105e3687 | 259 | break; |
120703f9 | 260 | |
105e3687 | 261 | case RC_BIT_NEC: |
120703f9 | 262 | poll_result->scancode = msg[1] << 8 | msg[2]; |
17809ed2 SY |
263 | if ((msg[3] ^ msg[4]) != 0xff) { /* 32 bits NEC */ |
264 | poll_result->protocol = RC_TYPE_NEC32; | |
120703f9 DH |
265 | poll_result->scancode = RC_SCANCODE_NEC32((msg[1] << 24) | |
266 | (msg[2] << 16) | | |
267 | (msg[3] << 8) | | |
268 | (msg[4])); | |
17809ed2 SY |
269 | } else if ((msg[1] ^ msg[2]) != 0xff) { /* 24 bits NEC */ |
270 | poll_result->protocol = RC_TYPE_NECX; | |
120703f9 DH |
271 | poll_result->scancode = RC_SCANCODE_NECX(msg[1] << 8 | |
272 | msg[2], msg[3]); | |
17809ed2 SY |
273 | } else { /* Normal NEC */ |
274 | poll_result->protocol = RC_TYPE_NEC; | |
120703f9 | 275 | poll_result->scancode = RC_SCANCODE_NEC(msg[1], msg[3]); |
17809ed2 | 276 | } |
105e3687 | 277 | break; |
120703f9 | 278 | |
0dae8839 | 279 | case RC_BIT_RC6_0: |
120703f9 DH |
280 | poll_result->protocol = RC_TYPE_RC6_0; |
281 | poll_result->scancode = RC_SCANCODE_RC6_0(msg[1], msg[2]); | |
0dae8839 | 282 | break; |
120703f9 | 283 | |
105e3687 | 284 | default: |
120703f9 | 285 | poll_result->protocol = RC_TYPE_UNKNOWN; |
105e3687 MCC |
286 | poll_result->scancode = (msg[1] << 24) | (msg[2] << 16) | |
287 | (msg[3] << 8) | msg[4]; | |
288 | break; | |
289 | } | |
4b92253a DH |
290 | |
291 | return 0; | |
a924a499 MCC |
292 | } |
293 | ||
294 | /********************************************************** | |
295 | Polling code for em28xx | |
296 | **********************************************************/ | |
297 | ||
768da3db FS |
298 | static int em28xx_i2c_ir_handle_key(struct em28xx_IR *ir) |
299 | { | |
120703f9 DH |
300 | static u32 scancode; |
301 | enum rc_type protocol; | |
768da3db | 302 | int rc; |
1d968cda | 303 | |
78e719a5 | 304 | rc = ir->get_key_i2c(ir->i2c_client, &protocol, &scancode); |
768da3db FS |
305 | if (rc < 0) { |
306 | dprintk("ir->get_key_i2c() failed: %d\n", rc); | |
307 | return rc; | |
308 | } | |
309 | ||
310 | if (rc) { | |
120703f9 DH |
311 | dprintk("%s: proto = 0x%04x, scancode = 0x%04x\n", |
312 | __func__, protocol, scancode); | |
313 | rc_keydown(ir->rc, protocol, scancode, 0); | |
768da3db FS |
314 | } |
315 | return 0; | |
316 | } | |
317 | ||
a924a499 MCC |
318 | static void em28xx_ir_handle_key(struct em28xx_IR *ir) |
319 | { | |
4b92253a | 320 | int result; |
4b92253a DH |
321 | struct em28xx_ir_poll_result poll_result; |
322 | ||
323 | /* read the registers containing the IR status */ | |
324 | result = ir->get_key(ir, &poll_result); | |
603044d8 | 325 | if (unlikely(result < 0)) { |
768da3db | 326 | dprintk("ir->get_key() failed: %d\n", result); |
a924a499 | 327 | return; |
4b92253a | 328 | } |
a924a499 | 329 | |
603044d8 | 330 | if (unlikely(poll_result.read_count != ir->last_readcount)) { |
105e3687 | 331 | dprintk("%s: toggle: %d, count: %d, key 0x%04x\n", __func__, |
603044d8 | 332 | poll_result.toggle_bit, poll_result.read_count, |
105e3687 | 333 | poll_result.scancode); |
a469585b | 334 | if (ir->full_code) |
ca86674b | 335 | rc_keydown(ir->rc, |
120703f9 | 336 | poll_result.protocol, |
105e3687 | 337 | poll_result.scancode, |
a469585b DH |
338 | poll_result.toggle_bit); |
339 | else | |
ca86674b | 340 | rc_keydown(ir->rc, |
120703f9 | 341 | RC_TYPE_UNKNOWN, |
105e3687 | 342 | poll_result.scancode & 0xff, |
a469585b | 343 | poll_result.toggle_bit); |
a469585b | 344 | |
20ae9742 MCC |
345 | if (ir->dev->chip_id == CHIP_ID_EM2874 || |
346 | ir->dev->chip_id == CHIP_ID_EM2884) | |
603044d8 MCC |
347 | /* The em2874 clears the readcount field every time the |
348 | register is read. The em2860/2880 datasheet says that it | |
349 | is supposed to clear the readcount, but it doesn't. So with | |
350 | the em2874, we are looking for a non-zero read count as | |
351 | opposed to a readcount that is incrementing */ | |
352 | ir->last_readcount = 0; | |
353 | else | |
354 | ir->last_readcount = poll_result.read_count; | |
355 | } | |
a924a499 MCC |
356 | } |
357 | ||
a924a499 MCC |
358 | static void em28xx_ir_work(struct work_struct *work) |
359 | { | |
f263bac9 | 360 | struct em28xx_IR *ir = container_of(work, struct em28xx_IR, work.work); |
a924a499 | 361 | |
78e719a5 | 362 | if (ir->i2c_client) /* external i2c device */ |
9b4539be FS |
363 | em28xx_i2c_ir_handle_key(ir); |
364 | else /* internal device */ | |
365 | em28xx_ir_handle_key(ir); | |
f263bac9 | 366 | schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling)); |
a924a499 MCC |
367 | } |
368 | ||
d8b4b582 | 369 | static int em28xx_ir_start(struct rc_dev *rc) |
a924a499 | 370 | { |
d8b4b582 | 371 | struct em28xx_IR *ir = rc->priv; |
c373cabf | 372 | |
9b4539be | 373 | INIT_DELAYED_WORK(&ir->work, em28xx_ir_work); |
f263bac9 | 374 | schedule_delayed_work(&ir->work, 0); |
c373cabf MCC |
375 | |
376 | return 0; | |
a924a499 MCC |
377 | } |
378 | ||
d8b4b582 | 379 | static void em28xx_ir_stop(struct rc_dev *rc) |
a924a499 | 380 | { |
d8b4b582 | 381 | struct em28xx_IR *ir = rc->priv; |
c373cabf | 382 | |
f263bac9 | 383 | cancel_delayed_work_sync(&ir->work); |
a924a499 MCC |
384 | } |
385 | ||
0dae8839 | 386 | static int em2860_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_type) |
a924a499 | 387 | { |
d8b4b582 | 388 | struct em28xx_IR *ir = rc_dev->priv; |
950b0f5a | 389 | struct em28xx *dev = ir->dev; |
1bad429e | 390 | |
0dae8839 MCC |
391 | /* Adjust xclk based on IR table for RC5/NEC tables */ |
392 | if (*rc_type & RC_BIT_RC5) { | |
393 | dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE; | |
394 | ir->full_code = 1; | |
395 | *rc_type = RC_BIT_RC5; | |
396 | } else if (*rc_type & RC_BIT_NEC) { | |
397 | dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE; | |
398 | ir->full_code = 1; | |
399 | *rc_type = RC_BIT_NEC; | |
400 | } else if (*rc_type & RC_BIT_UNKNOWN) { | |
401 | *rc_type = RC_BIT_UNKNOWN; | |
402 | } else { | |
403 | *rc_type = ir->rc_type; | |
404 | return -EINVAL; | |
405 | } | |
0dae8839 MCC |
406 | em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk, |
407 | EM28XX_XCLK_IR_RC5_MODE); | |
408 | ||
409 | ir->rc_type = *rc_type; | |
950b0f5a | 410 | |
0dae8839 MCC |
411 | return 0; |
412 | } | |
413 | ||
414 | static int em2874_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_type) | |
415 | { | |
416 | struct em28xx_IR *ir = rc_dev->priv; | |
417 | struct em28xx *dev = ir->dev; | |
418 | u8 ir_config = EM2874_IR_RC5; | |
419 | ||
420 | /* Adjust xclk and set type based on IR table for RC5/NEC/RC6 tables */ | |
c003ab1b | 421 | if (*rc_type & RC_BIT_RC5) { |
1bad429e MCC |
422 | dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE; |
423 | ir->full_code = 1; | |
c003ab1b DH |
424 | *rc_type = RC_BIT_RC5; |
425 | } else if (*rc_type & RC_BIT_NEC) { | |
1bad429e | 426 | dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE; |
105e3687 | 427 | ir_config = EM2874_IR_NEC | EM2874_IR_NEC_NO_PARITY; |
1bad429e | 428 | ir->full_code = 1; |
c003ab1b | 429 | *rc_type = RC_BIT_NEC; |
0dae8839 MCC |
430 | } else if (*rc_type & RC_BIT_RC6_0) { |
431 | dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE; | |
432 | ir_config = EM2874_IR_RC6_MODE_0; | |
433 | ir->full_code = 1; | |
434 | *rc_type = RC_BIT_RC6_0; | |
435 | } else if (*rc_type & RC_BIT_UNKNOWN) { | |
436 | *rc_type = RC_BIT_UNKNOWN; | |
437 | } else { | |
438 | *rc_type = ir->rc_type; | |
439 | return -EINVAL; | |
440 | } | |
0dae8839 | 441 | em28xx_write_regs(dev, EM2874_R50_IR_CONFIG, &ir_config, 1); |
1bad429e MCC |
442 | em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk, |
443 | EM28XX_XCLK_IR_RC5_MODE); | |
a924a499 | 444 | |
0dae8839 MCC |
445 | ir->rc_type = *rc_type; |
446 | ||
447 | return 0; | |
448 | } | |
449 | static int em28xx_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_type) | |
450 | { | |
451 | struct em28xx_IR *ir = rc_dev->priv; | |
452 | struct em28xx *dev = ir->dev; | |
453 | ||
4b92253a DH |
454 | /* Setup the proper handler based on the chip */ |
455 | switch (dev->chip_id) { | |
456 | case CHIP_ID_EM2860: | |
457 | case CHIP_ID_EM2883: | |
0dae8839 | 458 | return em2860_ir_change_protocol(rc_dev, rc_type); |
20ae9742 | 459 | case CHIP_ID_EM2884: |
4b92253a | 460 | case CHIP_ID_EM2874: |
a24ec448 | 461 | case CHIP_ID_EM28174: |
9f1d0bda | 462 | case CHIP_ID_EM28178: |
0dae8839 | 463 | return em2874_ir_change_protocol(rc_dev, rc_type); |
4b92253a | 464 | default: |
29b05e22 | 465 | dev_err(&ir->dev->intf->dev, |
ce8591ff MCC |
466 | "Unrecognized em28xx chip id 0x%02x: IR not supported\n", |
467 | dev->chip_id); | |
0dae8839 | 468 | return -EINVAL; |
950b0f5a | 469 | } |
950b0f5a MCC |
470 | } |
471 | ||
1d968cda | 472 | static int em28xx_probe_i2c_ir(struct em28xx *dev) |
9d9f479b | 473 | { |
768da3db | 474 | int i = 0; |
9d9f479b EG |
475 | /* Leadtek winfast tv USBII deluxe can find a non working IR-device */ |
476 | /* at address 0x18, so if that address is needed for another board in */ | |
477 | /* the future, please put it after 0x1f. */ | |
9d9f479b EG |
478 | const unsigned short addr_list[] = { |
479 | 0x1f, 0x30, 0x47, I2C_CLIENT_END | |
480 | }; | |
481 | ||
768da3db | 482 | while (addr_list[i] != I2C_CLIENT_END) { |
c7a45e5b | 483 | if (i2c_probe_func_quick_read(&dev->i2c_adap[dev->def_i2c_bus], addr_list[i]) == 1) |
1d968cda | 484 | return addr_list[i]; |
768da3db | 485 | i++; |
9d9f479b EG |
486 | } |
487 | ||
1d968cda | 488 | return -ENODEV; |
9d9f479b EG |
489 | } |
490 | ||
769af214 | 491 | /********************************************************** |
f5222609 | 492 | Handle buttons |
769af214 EG |
493 | **********************************************************/ |
494 | ||
f5222609 | 495 | static void em28xx_query_buttons(struct work_struct *work) |
769af214 | 496 | { |
769af214 | 497 | struct em28xx *dev = |
f5222609 FS |
498 | container_of(work, struct em28xx, buttons_query_work.work); |
499 | u8 i, j; | |
500 | int regval; | |
7763481a | 501 | bool is_pressed, was_pressed; |
6063d077 | 502 | const struct em28xx_led *led; |
f5222609 FS |
503 | |
504 | /* Poll and evaluate all addresses */ | |
505 | for (i = 0; i < dev->num_button_polling_addresses; i++) { | |
506 | /* Read value from register */ | |
507 | regval = em28xx_read_reg(dev, dev->button_polling_addresses[i]); | |
508 | if (regval < 0) | |
509 | continue; | |
510 | /* Check states of the buttons and act */ | |
511 | j = 0; | |
512 | while (dev->board.buttons[j].role >= 0 && | |
fdf1bc9f | 513 | dev->board.buttons[j].role < EM28XX_NUM_BUTTON_ROLES) { |
f5222609 FS |
514 | struct em28xx_button *button = &dev->board.buttons[j]; |
515 | /* Check if button uses the current address */ | |
516 | if (button->reg_r != dev->button_polling_addresses[i]) { | |
517 | j++; | |
518 | continue; | |
519 | } | |
7763481a FS |
520 | /* Determine if button is and was pressed last time */ |
521 | is_pressed = regval & button->mask; | |
522 | was_pressed = dev->button_polling_last_values[i] | |
523 | & button->mask; | |
524 | if (button->inverted) { | |
525 | is_pressed = !is_pressed; | |
526 | was_pressed = !was_pressed; | |
527 | } | |
528 | /* Clear button state (if needed) */ | |
529 | if (is_pressed && button->reg_clearing) | |
530 | em28xx_write_reg(dev, button->reg_clearing, | |
531 | (~regval & button->mask) | |
532 | | (regval & ~button->mask)); | |
f5222609 | 533 | /* Handle button state */ |
7763481a | 534 | if (!is_pressed || was_pressed) { |
f5222609 FS |
535 | j++; |
536 | continue; | |
537 | } | |
538 | switch (button->role) { | |
539 | case EM28XX_BUTTON_SNAPSHOT: | |
540 | /* Emulate the keypress */ | |
541 | input_report_key(dev->sbutton_input_dev, | |
542 | EM28XX_SNAPSHOT_KEY, 1); | |
543 | /* Unpress the key */ | |
544 | input_report_key(dev->sbutton_input_dev, | |
545 | EM28XX_SNAPSHOT_KEY, 0); | |
546 | break; | |
6063d077 FS |
547 | case EM28XX_BUTTON_ILLUMINATION: |
548 | led = em28xx_find_led(dev, | |
549 | EM28XX_LED_ILLUMINATION); | |
550 | /* Switch illumination LED on/off */ | |
551 | if (led) | |
552 | em28xx_toggle_reg_bits(dev, | |
553 | led->gpio_reg, | |
554 | led->gpio_mask); | |
555 | break; | |
f5222609 FS |
556 | default: |
557 | WARN_ONCE(1, "BUG: unhandled button role."); | |
558 | } | |
f5222609 FS |
559 | /* Next button */ |
560 | j++; | |
561 | } | |
7763481a FS |
562 | /* Save current value for comparison during the next polling */ |
563 | dev->button_polling_last_values[i] = regval; | |
769af214 | 564 | } |
769af214 | 565 | /* Schedule next poll */ |
f5222609 | 566 | schedule_delayed_work(&dev->buttons_query_work, |
0ff950a7 | 567 | msecs_to_jiffies(dev->button_polling_interval)); |
769af214 EG |
568 | } |
569 | ||
f5222609 | 570 | static int em28xx_register_snapshot_button(struct em28xx *dev) |
769af214 | 571 | { |
c6d48134 | 572 | struct usb_device *udev = interface_to_usbdev(dev->intf); |
769af214 EG |
573 | struct input_dev *input_dev; |
574 | int err; | |
575 | ||
29b05e22 | 576 | dev_info(&dev->intf->dev, "Registering snapshot button...\n"); |
769af214 | 577 | input_dev = input_allocate_device(); |
da4a7339 | 578 | if (!input_dev) |
f5222609 | 579 | return -ENOMEM; |
769af214 | 580 | |
c6d48134 | 581 | usb_make_path(udev, dev->snapshot_button_path, |
769af214 EG |
582 | sizeof(dev->snapshot_button_path)); |
583 | strlcat(dev->snapshot_button_path, "/sbutton", | |
584 | sizeof(dev->snapshot_button_path)); | |
769af214 EG |
585 | |
586 | input_dev->name = "em28xx snapshot button"; | |
587 | input_dev->phys = dev->snapshot_button_path; | |
588 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); | |
589 | set_bit(EM28XX_SNAPSHOT_KEY, input_dev->keybit); | |
590 | input_dev->keycodesize = 0; | |
591 | input_dev->keycodemax = 0; | |
592 | input_dev->id.bustype = BUS_USB; | |
c6d48134 MCC |
593 | input_dev->id.vendor = le16_to_cpu(udev->descriptor.idVendor); |
594 | input_dev->id.product = le16_to_cpu(udev->descriptor.idProduct); | |
769af214 | 595 | input_dev->id.version = 1; |
29b05e22 | 596 | input_dev->dev.parent = &dev->intf->dev; |
769af214 EG |
597 | |
598 | err = input_register_device(input_dev); | |
599 | if (err) { | |
29b05e22 | 600 | dev_err(&dev->intf->dev, "input_register_device failed\n"); |
769af214 | 601 | input_free_device(input_dev); |
f5222609 | 602 | return err; |
769af214 EG |
603 | } |
604 | ||
605 | dev->sbutton_input_dev = input_dev; | |
f5222609 FS |
606 | return 0; |
607 | } | |
769af214 | 608 | |
f5222609 FS |
609 | static void em28xx_init_buttons(struct em28xx *dev) |
610 | { | |
611 | u8 i = 0, j = 0; | |
7e6c8c19 | 612 | bool addr_new = false; |
f5222609 | 613 | |
0ff950a7 | 614 | dev->button_polling_interval = EM28XX_BUTTONS_DEBOUNCED_QUERY_INTERVAL; |
f5222609 | 615 | while (dev->board.buttons[i].role >= 0 && |
fdf1bc9f | 616 | dev->board.buttons[i].role < EM28XX_NUM_BUTTON_ROLES) { |
f5222609 FS |
617 | struct em28xx_button *button = &dev->board.buttons[i]; |
618 | /* Check if polling address is already on the list */ | |
7e6c8c19 | 619 | addr_new = true; |
f5222609 FS |
620 | for (j = 0; j < dev->num_button_polling_addresses; j++) { |
621 | if (button->reg_r == dev->button_polling_addresses[j]) { | |
7e6c8c19 | 622 | addr_new = false; |
f5222609 FS |
623 | break; |
624 | } | |
625 | } | |
626 | /* Check if max. number of polling addresses is exceeded */ | |
627 | if (addr_new && dev->num_button_polling_addresses | |
628 | >= EM28XX_NUM_BUTTON_ADDRESSES_MAX) { | |
629 | WARN_ONCE(1, "BUG: maximum number of button polling addresses exceeded."); | |
0ff950a7 | 630 | goto next_button; |
f5222609 | 631 | } |
6063d077 | 632 | /* Button role specific checks and actions */ |
f5222609 | 633 | if (button->role == EM28XX_BUTTON_SNAPSHOT) { |
6063d077 | 634 | /* Register input device */ |
f5222609 | 635 | if (em28xx_register_snapshot_button(dev) < 0) |
0ff950a7 | 636 | goto next_button; |
6063d077 FS |
637 | } else if (button->role == EM28XX_BUTTON_ILLUMINATION) { |
638 | /* Check sanity */ | |
639 | if (!em28xx_find_led(dev, EM28XX_LED_ILLUMINATION)) { | |
29b05e22 | 640 | dev_err(&dev->intf->dev, |
ce8591ff | 641 | "BUG: illumination button defined, but no illumination LED.\n"); |
0ff950a7 | 642 | goto next_button; |
6063d077 | 643 | } |
f5222609 FS |
644 | } |
645 | /* Add read address to list of polling addresses */ | |
646 | if (addr_new) { | |
647 | unsigned int index = dev->num_button_polling_addresses; | |
648 | dev->button_polling_addresses[index] = button->reg_r; | |
649 | dev->num_button_polling_addresses++; | |
650 | } | |
0ff950a7 FS |
651 | /* Reduce polling interval if necessary */ |
652 | if (!button->reg_clearing) | |
653 | dev->button_polling_interval = | |
654 | EM28XX_BUTTONS_VOLATILE_QUERY_INTERVAL; | |
655 | next_button: | |
f5222609 FS |
656 | /* Next button */ |
657 | i++; | |
658 | } | |
659 | ||
660 | /* Start polling */ | |
661 | if (dev->num_button_polling_addresses) { | |
7763481a | 662 | memset(dev->button_polling_last_values, 0, |
fdf1bc9f | 663 | EM28XX_NUM_BUTTON_ADDRESSES_MAX); |
f5222609 | 664 | schedule_delayed_work(&dev->buttons_query_work, |
fdf1bc9f | 665 | msecs_to_jiffies(dev->button_polling_interval)); |
f5222609 | 666 | } |
769af214 EG |
667 | } |
668 | ||
f5222609 | 669 | static void em28xx_shutdown_buttons(struct em28xx *dev) |
769af214 | 670 | { |
f5222609 FS |
671 | /* Cancel polling */ |
672 | cancel_delayed_work_sync(&dev->buttons_query_work); | |
673 | /* Clear polling addresses list */ | |
674 | dev->num_button_polling_addresses = 0; | |
675 | /* Deregister input devices */ | |
769af214 | 676 | if (dev->sbutton_input_dev != NULL) { |
29b05e22 | 677 | dev_info(&dev->intf->dev, "Deregistering snapshot button\n"); |
769af214 EG |
678 | input_unregister_device(dev->sbutton_input_dev); |
679 | dev->sbutton_input_dev = NULL; | |
680 | } | |
769af214 EG |
681 | } |
682 | ||
f4d4e765 | 683 | static int em28xx_ir_init(struct em28xx *dev) |
950b0f5a | 684 | { |
c6d48134 | 685 | struct usb_device *udev = interface_to_usbdev(dev->intf); |
950b0f5a | 686 | struct em28xx_IR *ir; |
d8b4b582 | 687 | struct rc_dev *rc; |
950b0f5a | 688 | int err = -ENOMEM; |
c003ab1b | 689 | u64 rc_type; |
1d968cda | 690 | u16 i2c_rc_dev_addr = 0; |
950b0f5a | 691 | |
822b8dea MCC |
692 | if (dev->is_audio_only) { |
693 | /* Shouldn't initialize IR for this interface */ | |
694 | return 0; | |
695 | } | |
696 | ||
47677e51 | 697 | kref_get(&dev->ref); |
bbfebeea | 698 | INIT_DELAYED_WORK(&dev->buttons_query_work, em28xx_query_buttons); |
47677e51 | 699 | |
f5222609 FS |
700 | if (dev->board.buttons) |
701 | em28xx_init_buttons(dev); | |
8303dc99 MCC |
702 | |
703 | if (dev->board.has_ir_i2c) { | |
1d968cda FS |
704 | i2c_rc_dev_addr = em28xx_probe_i2c_ir(dev); |
705 | if (!i2c_rc_dev_addr) { | |
768da3db | 706 | dev->board.has_ir_i2c = 0; |
29b05e22 | 707 | dev_warn(&dev->intf->dev, |
ce8591ff | 708 | "No i2c IR remote control device found.\n"); |
768da3db FS |
709 | return -ENODEV; |
710 | } | |
8303dc99 MCC |
711 | } |
712 | ||
768da3db | 713 | if (dev->board.ir_codes == NULL && !dev->board.has_ir_i2c) { |
950b0f5a | 714 | /* No remote control support */ |
29b05e22 | 715 | dev_warn(&dev->intf->dev, |
ce8591ff | 716 | "Remote control support is not available for this card.\n"); |
950b0f5a | 717 | return 0; |
a924a499 MCC |
718 | } |
719 | ||
29b05e22 | 720 | dev_info(&dev->intf->dev, "Registering input extension\n"); |
9634614f | 721 | |
950b0f5a | 722 | ir = kzalloc(sizeof(*ir), GFP_KERNEL); |
34d7c248 DC |
723 | if (!ir) |
724 | return -ENOMEM; | |
0f7499fd | 725 | rc = rc_allocate_device(RC_DRIVER_SCANCODE); |
34d7c248 | 726 | if (!rc) |
2f5741aa | 727 | goto error; |
950b0f5a MCC |
728 | |
729 | /* record handles to ourself */ | |
730 | ir->dev = dev; | |
731 | dev->ir = ir; | |
d8b4b582 | 732 | ir->rc = rc; |
950b0f5a | 733 | |
d8b4b582 | 734 | rc->priv = ir; |
d8b4b582 DH |
735 | rc->open = em28xx_ir_start; |
736 | rc->close = em28xx_ir_stop; | |
c373cabf | 737 | |
768da3db FS |
738 | if (dev->board.has_ir_i2c) { /* external i2c device */ |
739 | switch (dev->model) { | |
740 | case EM2800_BOARD_TERRATEC_CINERGY_200: | |
741 | case EM2820_BOARD_TERRATEC_CINERGY_250: | |
742 | rc->map_name = RC_MAP_EM_TERRATEC; | |
743 | ir->get_key_i2c = em28xx_get_key_terratec; | |
744 | break; | |
745 | case EM2820_BOARD_PINNACLE_USB_2: | |
746 | rc->map_name = RC_MAP_PINNACLE_GREY; | |
747 | ir->get_key_i2c = em28xx_get_key_pinnacle_usb_grey; | |
748 | break; | |
749 | case EM2820_BOARD_HAUPPAUGE_WINTV_USB_2: | |
750 | rc->map_name = RC_MAP_HAUPPAUGE; | |
751 | ir->get_key_i2c = em28xx_get_key_em_haup; | |
c5540fbb | 752 | rc->allowed_protocols = RC_BIT_RC5; |
768da3db FS |
753 | break; |
754 | case EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE: | |
755 | rc->map_name = RC_MAP_WINFAST_USBII_DELUXE; | |
756 | ir->get_key_i2c = em28xx_get_key_winfast_usbii_deluxe; | |
757 | break; | |
758 | default: | |
759 | err = -ENODEV; | |
760 | goto error; | |
761 | } | |
762 | ||
78e719a5 FS |
763 | ir->i2c_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); |
764 | if (!ir->i2c_client) | |
765 | goto error; | |
766 | ir->i2c_client->adapter = &ir->dev->i2c_adap[dev->def_i2c_bus]; | |
767 | ir->i2c_client->addr = i2c_rc_dev_addr; | |
768 | ir->i2c_client->flags = 0; | |
769 | /* NOTE: all other fields of i2c_client are unused */ | |
768da3db FS |
770 | } else { /* internal device */ |
771 | switch (dev->chip_id) { | |
772 | case CHIP_ID_EM2860: | |
773 | case CHIP_ID_EM2883: | |
c5540fbb | 774 | rc->allowed_protocols = RC_BIT_RC5 | RC_BIT_NEC; |
768da3db FS |
775 | ir->get_key = default_polling_getkey; |
776 | break; | |
777 | case CHIP_ID_EM2884: | |
778 | case CHIP_ID_EM2874: | |
779 | case CHIP_ID_EM28174: | |
9f1d0bda | 780 | case CHIP_ID_EM28178: |
768da3db | 781 | ir->get_key = em2874_polling_getkey; |
c5540fbb | 782 | rc->allowed_protocols = RC_BIT_RC5 | RC_BIT_NEC | |
17809ed2 | 783 | RC_BIT_NECX | RC_BIT_NEC32 | RC_BIT_RC6_0; |
768da3db FS |
784 | break; |
785 | default: | |
786 | err = -ENODEV; | |
787 | goto error; | |
788 | } | |
789 | ||
790 | rc->change_protocol = em28xx_ir_change_protocol; | |
791 | rc->map_name = dev->board.ir_codes; | |
792 | ||
793 | /* By default, keep protocol field untouched */ | |
794 | rc_type = RC_BIT_UNKNOWN; | |
795 | err = em28xx_ir_change_protocol(rc, &rc_type); | |
796 | if (err) | |
797 | goto error; | |
0dae8839 MCC |
798 | } |
799 | ||
4b92253a DH |
800 | /* This is how often we ask the chip for IR information */ |
801 | ir->polling = 100; /* ms */ | |
802 | ||
a924a499 | 803 | /* init input device */ |
ce8591ff | 804 | snprintf(ir->name, sizeof(ir->name), "%s IR", |
29b05e22 | 805 | dev_name(&dev->intf->dev)); |
a924a499 | 806 | |
c6d48134 | 807 | usb_make_path(udev, ir->phys, sizeof(ir->phys)); |
a924a499 MCC |
808 | strlcat(ir->phys, "/input0", sizeof(ir->phys)); |
809 | ||
518f4b26 | 810 | rc->device_name = ir->name; |
d8b4b582 DH |
811 | rc->input_phys = ir->phys; |
812 | rc->input_id.bustype = BUS_USB; | |
813 | rc->input_id.version = 1; | |
c6d48134 MCC |
814 | rc->input_id.vendor = le16_to_cpu(udev->descriptor.idVendor); |
815 | rc->input_id.product = le16_to_cpu(udev->descriptor.idProduct); | |
29b05e22 | 816 | rc->dev.parent = &dev->intf->dev; |
d8b4b582 | 817 | rc->driver_name = MODULE_NAME; |
a924a499 MCC |
818 | |
819 | /* all done */ | |
d8b4b582 | 820 | err = rc_register_device(rc); |
a924a499 | 821 | if (err) |
2f5741aa | 822 | goto error; |
a924a499 | 823 | |
1250a85b | 824 | dev_info(&dev->intf->dev, "Input extension successfully initialized\n"); |
9634614f | 825 | |
a924a499 | 826 | return 0; |
d8b4b582 | 827 | |
2f5741aa | 828 | error: |
78e719a5 | 829 | kfree(ir->i2c_client); |
a924a499 | 830 | dev->ir = NULL; |
d8b4b582 | 831 | rc_free_device(rc); |
a924a499 MCC |
832 | kfree(ir); |
833 | return err; | |
834 | } | |
835 | ||
f4d4e765 | 836 | static int em28xx_ir_fini(struct em28xx *dev) |
a924a499 MCC |
837 | { |
838 | struct em28xx_IR *ir = dev->ir; | |
839 | ||
822b8dea MCC |
840 | if (dev->is_audio_only) { |
841 | /* Shouldn't initialize IR for this interface */ | |
842 | return 0; | |
843 | } | |
844 | ||
29b05e22 | 845 | dev_info(&dev->intf->dev, "Closing input extension\n"); |
aa929ad7 | 846 | |
f5222609 | 847 | em28xx_shutdown_buttons(dev); |
2fd6f8d1 | 848 | |
a924a499 MCC |
849 | /* skip detach on non attached boards */ |
850 | if (!ir) | |
47677e51 | 851 | goto ref_put; |
a924a499 | 852 | |
83f56f7c | 853 | rc_unregister_device(ir->rc); |
a924a499 | 854 | |
78e719a5 FS |
855 | kfree(ir->i2c_client); |
856 | ||
a924a499 | 857 | /* done */ |
6d514774 | 858 | kfree(ir); |
a924a499 | 859 | dev->ir = NULL; |
47677e51 MCC |
860 | |
861 | ref_put: | |
862 | kref_put(&dev->ref, em28xx_free_device); | |
863 | ||
a924a499 MCC |
864 | return 0; |
865 | } | |
866 | ||
5025076a SK |
867 | static int em28xx_ir_suspend(struct em28xx *dev) |
868 | { | |
869 | struct em28xx_IR *ir = dev->ir; | |
870 | ||
871 | if (dev->is_audio_only) | |
872 | return 0; | |
873 | ||
29b05e22 | 874 | dev_info(&dev->intf->dev, "Suspending input extension\n"); |
5025076a SK |
875 | if (ir) |
876 | cancel_delayed_work_sync(&ir->work); | |
877 | cancel_delayed_work_sync(&dev->buttons_query_work); | |
878 | /* is canceling delayed work sufficient or does the rc event | |
879 | kthread needs stopping? kthread is stopped in | |
880 | ir_raw_event_unregister() */ | |
881 | return 0; | |
882 | } | |
883 | ||
884 | static int em28xx_ir_resume(struct em28xx *dev) | |
885 | { | |
886 | struct em28xx_IR *ir = dev->ir; | |
887 | ||
888 | if (dev->is_audio_only) | |
889 | return 0; | |
890 | ||
29b05e22 | 891 | dev_info(&dev->intf->dev, "Resuming input extension\n"); |
5025076a SK |
892 | /* if suspend calls ir_raw_event_unregister(), the should call |
893 | ir_raw_event_register() */ | |
894 | if (ir) | |
895 | schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling)); | |
896 | if (dev->num_button_polling_addresses) | |
897 | schedule_delayed_work(&dev->buttons_query_work, | |
fdf1bc9f | 898 | msecs_to_jiffies(dev->button_polling_interval)); |
5025076a SK |
899 | return 0; |
900 | } | |
901 | ||
f4d4e765 EG |
902 | static struct em28xx_ops rc_ops = { |
903 | .id = EM28XX_RC, | |
904 | .name = "Em28xx Input Extension", | |
905 | .init = em28xx_ir_init, | |
906 | .fini = em28xx_ir_fini, | |
5025076a SK |
907 | .suspend = em28xx_ir_suspend, |
908 | .resume = em28xx_ir_resume, | |
f4d4e765 EG |
909 | }; |
910 | ||
911 | static int __init em28xx_rc_register(void) | |
912 | { | |
913 | return em28xx_register_extension(&rc_ops); | |
914 | } | |
915 | ||
916 | static void __exit em28xx_rc_unregister(void) | |
917 | { | |
918 | em28xx_unregister_extension(&rc_ops); | |
919 | } | |
920 | ||
921 | MODULE_LICENSE("GPL"); | |
37e59f87 | 922 | MODULE_AUTHOR("Mauro Carvalho Chehab"); |
d8992b09 MCC |
923 | MODULE_DESCRIPTION(DRIVER_DESC " - input interface"); |
924 | MODULE_VERSION(EM28XX_VERSION); | |
f4d4e765 EG |
925 | |
926 | module_init(em28xx_rc_register); | |
927 | module_exit(em28xx_rc_unregister); |