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 DH |
262 | poll_result->protocol = RC_TYPE_RC5; |
263 | poll_result->scancode = msg[1] << 8 | msg[2]; | |
105e3687 | 264 | if ((msg[3] ^ msg[4]) != 0xff) /* 32 bits NEC */ |
120703f9 DH |
265 | poll_result->scancode = RC_SCANCODE_NEC32((msg[1] << 24) | |
266 | (msg[2] << 16) | | |
267 | (msg[3] << 8) | | |
268 | (msg[4])); | |
105e3687 | 269 | else if ((msg[1] ^ msg[2]) != 0xff) /* 24 bits NEC */ |
120703f9 DH |
270 | poll_result->scancode = RC_SCANCODE_NECX(msg[1] << 8 | |
271 | msg[2], msg[3]); | |
105e3687 | 272 | else /* Normal NEC */ |
120703f9 | 273 | poll_result->scancode = RC_SCANCODE_NEC(msg[1], msg[3]); |
105e3687 | 274 | break; |
120703f9 | 275 | |
0dae8839 | 276 | case RC_BIT_RC6_0: |
120703f9 DH |
277 | poll_result->protocol = RC_TYPE_RC6_0; |
278 | poll_result->scancode = RC_SCANCODE_RC6_0(msg[1], msg[2]); | |
0dae8839 | 279 | break; |
120703f9 | 280 | |
105e3687 | 281 | default: |
120703f9 | 282 | poll_result->protocol = RC_TYPE_UNKNOWN; |
105e3687 MCC |
283 | poll_result->scancode = (msg[1] << 24) | (msg[2] << 16) | |
284 | (msg[3] << 8) | msg[4]; | |
285 | break; | |
286 | } | |
4b92253a DH |
287 | |
288 | return 0; | |
a924a499 MCC |
289 | } |
290 | ||
291 | /********************************************************** | |
292 | Polling code for em28xx | |
293 | **********************************************************/ | |
294 | ||
768da3db FS |
295 | static int em28xx_i2c_ir_handle_key(struct em28xx_IR *ir) |
296 | { | |
120703f9 DH |
297 | static u32 scancode; |
298 | enum rc_type protocol; | |
768da3db | 299 | int rc; |
1d968cda | 300 | |
78e719a5 | 301 | rc = ir->get_key_i2c(ir->i2c_client, &protocol, &scancode); |
768da3db FS |
302 | if (rc < 0) { |
303 | dprintk("ir->get_key_i2c() failed: %d\n", rc); | |
304 | return rc; | |
305 | } | |
306 | ||
307 | if (rc) { | |
120703f9 DH |
308 | dprintk("%s: proto = 0x%04x, scancode = 0x%04x\n", |
309 | __func__, protocol, scancode); | |
310 | rc_keydown(ir->rc, protocol, scancode, 0); | |
768da3db FS |
311 | } |
312 | return 0; | |
313 | } | |
314 | ||
a924a499 MCC |
315 | static void em28xx_ir_handle_key(struct em28xx_IR *ir) |
316 | { | |
4b92253a | 317 | int result; |
4b92253a DH |
318 | struct em28xx_ir_poll_result poll_result; |
319 | ||
320 | /* read the registers containing the IR status */ | |
321 | result = ir->get_key(ir, &poll_result); | |
603044d8 | 322 | if (unlikely(result < 0)) { |
768da3db | 323 | dprintk("ir->get_key() failed: %d\n", result); |
a924a499 | 324 | return; |
4b92253a | 325 | } |
a924a499 | 326 | |
603044d8 | 327 | if (unlikely(poll_result.read_count != ir->last_readcount)) { |
105e3687 | 328 | dprintk("%s: toggle: %d, count: %d, key 0x%04x\n", __func__, |
603044d8 | 329 | poll_result.toggle_bit, poll_result.read_count, |
105e3687 | 330 | poll_result.scancode); |
a469585b | 331 | if (ir->full_code) |
ca86674b | 332 | rc_keydown(ir->rc, |
120703f9 | 333 | poll_result.protocol, |
105e3687 | 334 | poll_result.scancode, |
a469585b DH |
335 | poll_result.toggle_bit); |
336 | else | |
ca86674b | 337 | rc_keydown(ir->rc, |
120703f9 | 338 | RC_TYPE_UNKNOWN, |
105e3687 | 339 | poll_result.scancode & 0xff, |
a469585b | 340 | poll_result.toggle_bit); |
a469585b | 341 | |
20ae9742 MCC |
342 | if (ir->dev->chip_id == CHIP_ID_EM2874 || |
343 | ir->dev->chip_id == CHIP_ID_EM2884) | |
603044d8 MCC |
344 | /* The em2874 clears the readcount field every time the |
345 | register is read. The em2860/2880 datasheet says that it | |
346 | is supposed to clear the readcount, but it doesn't. So with | |
347 | the em2874, we are looking for a non-zero read count as | |
348 | opposed to a readcount that is incrementing */ | |
349 | ir->last_readcount = 0; | |
350 | else | |
351 | ir->last_readcount = poll_result.read_count; | |
352 | } | |
a924a499 MCC |
353 | } |
354 | ||
a924a499 MCC |
355 | static void em28xx_ir_work(struct work_struct *work) |
356 | { | |
f263bac9 | 357 | struct em28xx_IR *ir = container_of(work, struct em28xx_IR, work.work); |
a924a499 | 358 | |
78e719a5 | 359 | if (ir->i2c_client) /* external i2c device */ |
9b4539be FS |
360 | em28xx_i2c_ir_handle_key(ir); |
361 | else /* internal device */ | |
362 | em28xx_ir_handle_key(ir); | |
f263bac9 | 363 | schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling)); |
a924a499 MCC |
364 | } |
365 | ||
d8b4b582 | 366 | static int em28xx_ir_start(struct rc_dev *rc) |
a924a499 | 367 | { |
d8b4b582 | 368 | struct em28xx_IR *ir = rc->priv; |
c373cabf | 369 | |
9b4539be | 370 | INIT_DELAYED_WORK(&ir->work, em28xx_ir_work); |
f263bac9 | 371 | schedule_delayed_work(&ir->work, 0); |
c373cabf MCC |
372 | |
373 | return 0; | |
a924a499 MCC |
374 | } |
375 | ||
d8b4b582 | 376 | static void em28xx_ir_stop(struct rc_dev *rc) |
a924a499 | 377 | { |
d8b4b582 | 378 | struct em28xx_IR *ir = rc->priv; |
c373cabf | 379 | |
f263bac9 | 380 | cancel_delayed_work_sync(&ir->work); |
a924a499 MCC |
381 | } |
382 | ||
0dae8839 | 383 | static int em2860_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_type) |
a924a499 | 384 | { |
d8b4b582 | 385 | struct em28xx_IR *ir = rc_dev->priv; |
950b0f5a | 386 | struct em28xx *dev = ir->dev; |
1bad429e | 387 | |
0dae8839 MCC |
388 | /* Adjust xclk based on IR table for RC5/NEC tables */ |
389 | if (*rc_type & RC_BIT_RC5) { | |
390 | dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE; | |
391 | ir->full_code = 1; | |
392 | *rc_type = RC_BIT_RC5; | |
393 | } else if (*rc_type & RC_BIT_NEC) { | |
394 | dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE; | |
395 | ir->full_code = 1; | |
396 | *rc_type = RC_BIT_NEC; | |
397 | } else if (*rc_type & RC_BIT_UNKNOWN) { | |
398 | *rc_type = RC_BIT_UNKNOWN; | |
399 | } else { | |
400 | *rc_type = ir->rc_type; | |
401 | return -EINVAL; | |
402 | } | |
0dae8839 MCC |
403 | em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk, |
404 | EM28XX_XCLK_IR_RC5_MODE); | |
405 | ||
406 | ir->rc_type = *rc_type; | |
950b0f5a | 407 | |
0dae8839 MCC |
408 | return 0; |
409 | } | |
410 | ||
411 | static int em2874_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_type) | |
412 | { | |
413 | struct em28xx_IR *ir = rc_dev->priv; | |
414 | struct em28xx *dev = ir->dev; | |
415 | u8 ir_config = EM2874_IR_RC5; | |
416 | ||
417 | /* Adjust xclk and set type based on IR table for RC5/NEC/RC6 tables */ | |
c003ab1b | 418 | if (*rc_type & RC_BIT_RC5) { |
1bad429e MCC |
419 | dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE; |
420 | ir->full_code = 1; | |
c003ab1b DH |
421 | *rc_type = RC_BIT_RC5; |
422 | } else if (*rc_type & RC_BIT_NEC) { | |
1bad429e | 423 | dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE; |
105e3687 | 424 | ir_config = EM2874_IR_NEC | EM2874_IR_NEC_NO_PARITY; |
1bad429e | 425 | ir->full_code = 1; |
c003ab1b | 426 | *rc_type = RC_BIT_NEC; |
0dae8839 MCC |
427 | } else if (*rc_type & RC_BIT_RC6_0) { |
428 | dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE; | |
429 | ir_config = EM2874_IR_RC6_MODE_0; | |
430 | ir->full_code = 1; | |
431 | *rc_type = RC_BIT_RC6_0; | |
432 | } else if (*rc_type & RC_BIT_UNKNOWN) { | |
433 | *rc_type = RC_BIT_UNKNOWN; | |
434 | } else { | |
435 | *rc_type = ir->rc_type; | |
436 | return -EINVAL; | |
437 | } | |
0dae8839 | 438 | em28xx_write_regs(dev, EM2874_R50_IR_CONFIG, &ir_config, 1); |
1bad429e MCC |
439 | em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk, |
440 | EM28XX_XCLK_IR_RC5_MODE); | |
a924a499 | 441 | |
0dae8839 MCC |
442 | ir->rc_type = *rc_type; |
443 | ||
444 | return 0; | |
445 | } | |
446 | static int em28xx_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_type) | |
447 | { | |
448 | struct em28xx_IR *ir = rc_dev->priv; | |
449 | struct em28xx *dev = ir->dev; | |
450 | ||
4b92253a DH |
451 | /* Setup the proper handler based on the chip */ |
452 | switch (dev->chip_id) { | |
453 | case CHIP_ID_EM2860: | |
454 | case CHIP_ID_EM2883: | |
0dae8839 | 455 | return em2860_ir_change_protocol(rc_dev, rc_type); |
20ae9742 | 456 | case CHIP_ID_EM2884: |
4b92253a | 457 | case CHIP_ID_EM2874: |
a24ec448 | 458 | case CHIP_ID_EM28174: |
9f1d0bda | 459 | case CHIP_ID_EM28178: |
0dae8839 | 460 | return em2874_ir_change_protocol(rc_dev, rc_type); |
4b92253a | 461 | default: |
29b05e22 | 462 | dev_err(&ir->dev->intf->dev, |
ce8591ff MCC |
463 | "Unrecognized em28xx chip id 0x%02x: IR not supported\n", |
464 | dev->chip_id); | |
0dae8839 | 465 | return -EINVAL; |
950b0f5a | 466 | } |
950b0f5a MCC |
467 | } |
468 | ||
1d968cda | 469 | static int em28xx_probe_i2c_ir(struct em28xx *dev) |
9d9f479b | 470 | { |
768da3db | 471 | int i = 0; |
9d9f479b EG |
472 | /* Leadtek winfast tv USBII deluxe can find a non working IR-device */ |
473 | /* at address 0x18, so if that address is needed for another board in */ | |
474 | /* the future, please put it after 0x1f. */ | |
9d9f479b EG |
475 | const unsigned short addr_list[] = { |
476 | 0x1f, 0x30, 0x47, I2C_CLIENT_END | |
477 | }; | |
478 | ||
768da3db | 479 | while (addr_list[i] != I2C_CLIENT_END) { |
c7a45e5b | 480 | if (i2c_probe_func_quick_read(&dev->i2c_adap[dev->def_i2c_bus], addr_list[i]) == 1) |
1d968cda | 481 | return addr_list[i]; |
768da3db | 482 | i++; |
9d9f479b EG |
483 | } |
484 | ||
1d968cda | 485 | return -ENODEV; |
9d9f479b EG |
486 | } |
487 | ||
769af214 | 488 | /********************************************************** |
f5222609 | 489 | Handle buttons |
769af214 EG |
490 | **********************************************************/ |
491 | ||
f5222609 | 492 | static void em28xx_query_buttons(struct work_struct *work) |
769af214 | 493 | { |
769af214 | 494 | struct em28xx *dev = |
f5222609 FS |
495 | container_of(work, struct em28xx, buttons_query_work.work); |
496 | u8 i, j; | |
497 | int regval; | |
7763481a | 498 | bool is_pressed, was_pressed; |
6063d077 | 499 | const struct em28xx_led *led; |
f5222609 FS |
500 | |
501 | /* Poll and evaluate all addresses */ | |
502 | for (i = 0; i < dev->num_button_polling_addresses; i++) { | |
503 | /* Read value from register */ | |
504 | regval = em28xx_read_reg(dev, dev->button_polling_addresses[i]); | |
505 | if (regval < 0) | |
506 | continue; | |
507 | /* Check states of the buttons and act */ | |
508 | j = 0; | |
509 | while (dev->board.buttons[j].role >= 0 && | |
fdf1bc9f | 510 | dev->board.buttons[j].role < EM28XX_NUM_BUTTON_ROLES) { |
f5222609 FS |
511 | struct em28xx_button *button = &dev->board.buttons[j]; |
512 | /* Check if button uses the current address */ | |
513 | if (button->reg_r != dev->button_polling_addresses[i]) { | |
514 | j++; | |
515 | continue; | |
516 | } | |
7763481a FS |
517 | /* Determine if button is and was pressed last time */ |
518 | is_pressed = regval & button->mask; | |
519 | was_pressed = dev->button_polling_last_values[i] | |
520 | & button->mask; | |
521 | if (button->inverted) { | |
522 | is_pressed = !is_pressed; | |
523 | was_pressed = !was_pressed; | |
524 | } | |
525 | /* Clear button state (if needed) */ | |
526 | if (is_pressed && button->reg_clearing) | |
527 | em28xx_write_reg(dev, button->reg_clearing, | |
528 | (~regval & button->mask) | |
529 | | (regval & ~button->mask)); | |
f5222609 | 530 | /* Handle button state */ |
7763481a | 531 | if (!is_pressed || was_pressed) { |
f5222609 FS |
532 | j++; |
533 | continue; | |
534 | } | |
535 | switch (button->role) { | |
536 | case EM28XX_BUTTON_SNAPSHOT: | |
537 | /* Emulate the keypress */ | |
538 | input_report_key(dev->sbutton_input_dev, | |
539 | EM28XX_SNAPSHOT_KEY, 1); | |
540 | /* Unpress the key */ | |
541 | input_report_key(dev->sbutton_input_dev, | |
542 | EM28XX_SNAPSHOT_KEY, 0); | |
543 | break; | |
6063d077 FS |
544 | case EM28XX_BUTTON_ILLUMINATION: |
545 | led = em28xx_find_led(dev, | |
546 | EM28XX_LED_ILLUMINATION); | |
547 | /* Switch illumination LED on/off */ | |
548 | if (led) | |
549 | em28xx_toggle_reg_bits(dev, | |
550 | led->gpio_reg, | |
551 | led->gpio_mask); | |
552 | break; | |
f5222609 FS |
553 | default: |
554 | WARN_ONCE(1, "BUG: unhandled button role."); | |
555 | } | |
f5222609 FS |
556 | /* Next button */ |
557 | j++; | |
558 | } | |
7763481a FS |
559 | /* Save current value for comparison during the next polling */ |
560 | dev->button_polling_last_values[i] = regval; | |
769af214 | 561 | } |
769af214 | 562 | /* Schedule next poll */ |
f5222609 | 563 | schedule_delayed_work(&dev->buttons_query_work, |
0ff950a7 | 564 | msecs_to_jiffies(dev->button_polling_interval)); |
769af214 EG |
565 | } |
566 | ||
f5222609 | 567 | static int em28xx_register_snapshot_button(struct em28xx *dev) |
769af214 EG |
568 | { |
569 | struct input_dev *input_dev; | |
570 | int err; | |
571 | ||
29b05e22 | 572 | dev_info(&dev->intf->dev, "Registering snapshot button...\n"); |
769af214 | 573 | input_dev = input_allocate_device(); |
da4a7339 | 574 | if (!input_dev) |
f5222609 | 575 | return -ENOMEM; |
769af214 EG |
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)); | |
769af214 EG |
581 | |
582 | input_dev->name = "em28xx snapshot button"; | |
583 | input_dev->phys = dev->snapshot_button_path; | |
584 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); | |
585 | set_bit(EM28XX_SNAPSHOT_KEY, input_dev->keybit); | |
586 | input_dev->keycodesize = 0; | |
587 | input_dev->keycodemax = 0; | |
588 | input_dev->id.bustype = BUS_USB; | |
589 | input_dev->id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor); | |
590 | input_dev->id.product = le16_to_cpu(dev->udev->descriptor.idProduct); | |
591 | input_dev->id.version = 1; | |
29b05e22 | 592 | input_dev->dev.parent = &dev->intf->dev; |
769af214 EG |
593 | |
594 | err = input_register_device(input_dev); | |
595 | if (err) { | |
29b05e22 | 596 | dev_err(&dev->intf->dev, "input_register_device failed\n"); |
769af214 | 597 | input_free_device(input_dev); |
f5222609 | 598 | return err; |
769af214 EG |
599 | } |
600 | ||
601 | dev->sbutton_input_dev = input_dev; | |
f5222609 FS |
602 | return 0; |
603 | } | |
769af214 | 604 | |
f5222609 FS |
605 | static void em28xx_init_buttons(struct em28xx *dev) |
606 | { | |
607 | u8 i = 0, j = 0; | |
7e6c8c19 | 608 | bool addr_new = false; |
f5222609 | 609 | |
0ff950a7 | 610 | dev->button_polling_interval = EM28XX_BUTTONS_DEBOUNCED_QUERY_INTERVAL; |
f5222609 | 611 | while (dev->board.buttons[i].role >= 0 && |
fdf1bc9f | 612 | dev->board.buttons[i].role < EM28XX_NUM_BUTTON_ROLES) { |
f5222609 FS |
613 | struct em28xx_button *button = &dev->board.buttons[i]; |
614 | /* Check if polling address is already on the list */ | |
7e6c8c19 | 615 | addr_new = true; |
f5222609 FS |
616 | for (j = 0; j < dev->num_button_polling_addresses; j++) { |
617 | if (button->reg_r == dev->button_polling_addresses[j]) { | |
7e6c8c19 | 618 | addr_new = false; |
f5222609 FS |
619 | break; |
620 | } | |
621 | } | |
622 | /* Check if max. number of polling addresses is exceeded */ | |
623 | if (addr_new && dev->num_button_polling_addresses | |
624 | >= EM28XX_NUM_BUTTON_ADDRESSES_MAX) { | |
625 | WARN_ONCE(1, "BUG: maximum number of button polling addresses exceeded."); | |
0ff950a7 | 626 | goto next_button; |
f5222609 | 627 | } |
6063d077 | 628 | /* Button role specific checks and actions */ |
f5222609 | 629 | if (button->role == EM28XX_BUTTON_SNAPSHOT) { |
6063d077 | 630 | /* Register input device */ |
f5222609 | 631 | if (em28xx_register_snapshot_button(dev) < 0) |
0ff950a7 | 632 | goto next_button; |
6063d077 FS |
633 | } else if (button->role == EM28XX_BUTTON_ILLUMINATION) { |
634 | /* Check sanity */ | |
635 | if (!em28xx_find_led(dev, EM28XX_LED_ILLUMINATION)) { | |
29b05e22 | 636 | dev_err(&dev->intf->dev, |
ce8591ff | 637 | "BUG: illumination button defined, but no illumination LED.\n"); |
0ff950a7 | 638 | goto next_button; |
6063d077 | 639 | } |
f5222609 FS |
640 | } |
641 | /* Add read address to list of polling addresses */ | |
642 | if (addr_new) { | |
643 | unsigned int index = dev->num_button_polling_addresses; | |
644 | dev->button_polling_addresses[index] = button->reg_r; | |
645 | dev->num_button_polling_addresses++; | |
646 | } | |
0ff950a7 FS |
647 | /* Reduce polling interval if necessary */ |
648 | if (!button->reg_clearing) | |
649 | dev->button_polling_interval = | |
650 | EM28XX_BUTTONS_VOLATILE_QUERY_INTERVAL; | |
651 | next_button: | |
f5222609 FS |
652 | /* Next button */ |
653 | i++; | |
654 | } | |
655 | ||
656 | /* Start polling */ | |
657 | if (dev->num_button_polling_addresses) { | |
7763481a | 658 | memset(dev->button_polling_last_values, 0, |
fdf1bc9f | 659 | EM28XX_NUM_BUTTON_ADDRESSES_MAX); |
f5222609 | 660 | schedule_delayed_work(&dev->buttons_query_work, |
fdf1bc9f | 661 | msecs_to_jiffies(dev->button_polling_interval)); |
f5222609 | 662 | } |
769af214 EG |
663 | } |
664 | ||
f5222609 | 665 | static void em28xx_shutdown_buttons(struct em28xx *dev) |
769af214 | 666 | { |
f5222609 FS |
667 | /* Cancel polling */ |
668 | cancel_delayed_work_sync(&dev->buttons_query_work); | |
669 | /* Clear polling addresses list */ | |
670 | dev->num_button_polling_addresses = 0; | |
671 | /* Deregister input devices */ | |
769af214 | 672 | if (dev->sbutton_input_dev != NULL) { |
29b05e22 | 673 | dev_info(&dev->intf->dev, "Deregistering snapshot button\n"); |
769af214 EG |
674 | input_unregister_device(dev->sbutton_input_dev); |
675 | dev->sbutton_input_dev = NULL; | |
676 | } | |
769af214 EG |
677 | } |
678 | ||
f4d4e765 | 679 | static int em28xx_ir_init(struct em28xx *dev) |
950b0f5a MCC |
680 | { |
681 | struct em28xx_IR *ir; | |
d8b4b582 | 682 | struct rc_dev *rc; |
950b0f5a | 683 | int err = -ENOMEM; |
c003ab1b | 684 | u64 rc_type; |
1d968cda | 685 | u16 i2c_rc_dev_addr = 0; |
950b0f5a | 686 | |
822b8dea MCC |
687 | if (dev->is_audio_only) { |
688 | /* Shouldn't initialize IR for this interface */ | |
689 | return 0; | |
690 | } | |
691 | ||
47677e51 | 692 | kref_get(&dev->ref); |
bbfebeea | 693 | INIT_DELAYED_WORK(&dev->buttons_query_work, em28xx_query_buttons); |
47677e51 | 694 | |
f5222609 FS |
695 | if (dev->board.buttons) |
696 | em28xx_init_buttons(dev); | |
8303dc99 MCC |
697 | |
698 | if (dev->board.has_ir_i2c) { | |
1d968cda FS |
699 | i2c_rc_dev_addr = em28xx_probe_i2c_ir(dev); |
700 | if (!i2c_rc_dev_addr) { | |
768da3db | 701 | dev->board.has_ir_i2c = 0; |
29b05e22 | 702 | dev_warn(&dev->intf->dev, |
ce8591ff | 703 | "No i2c IR remote control device found.\n"); |
768da3db FS |
704 | return -ENODEV; |
705 | } | |
8303dc99 MCC |
706 | } |
707 | ||
768da3db | 708 | if (dev->board.ir_codes == NULL && !dev->board.has_ir_i2c) { |
950b0f5a | 709 | /* No remote control support */ |
29b05e22 | 710 | dev_warn(&dev->intf->dev, |
ce8591ff | 711 | "Remote control support is not available for this card.\n"); |
950b0f5a | 712 | return 0; |
a924a499 MCC |
713 | } |
714 | ||
29b05e22 | 715 | dev_info(&dev->intf->dev, "Registering input extension\n"); |
9634614f | 716 | |
950b0f5a | 717 | ir = kzalloc(sizeof(*ir), GFP_KERNEL); |
34d7c248 DC |
718 | if (!ir) |
719 | return -ENOMEM; | |
d8b4b582 | 720 | rc = rc_allocate_device(); |
34d7c248 | 721 | if (!rc) |
2f5741aa | 722 | goto error; |
950b0f5a MCC |
723 | |
724 | /* record handles to ourself */ | |
725 | ir->dev = dev; | |
726 | dev->ir = ir; | |
d8b4b582 | 727 | ir->rc = rc; |
950b0f5a | 728 | |
d8b4b582 | 729 | rc->priv = ir; |
d8b4b582 DH |
730 | rc->open = em28xx_ir_start; |
731 | rc->close = em28xx_ir_stop; | |
c373cabf | 732 | |
768da3db FS |
733 | if (dev->board.has_ir_i2c) { /* external i2c device */ |
734 | switch (dev->model) { | |
735 | case EM2800_BOARD_TERRATEC_CINERGY_200: | |
736 | case EM2820_BOARD_TERRATEC_CINERGY_250: | |
737 | rc->map_name = RC_MAP_EM_TERRATEC; | |
738 | ir->get_key_i2c = em28xx_get_key_terratec; | |
739 | break; | |
740 | case EM2820_BOARD_PINNACLE_USB_2: | |
741 | rc->map_name = RC_MAP_PINNACLE_GREY; | |
742 | ir->get_key_i2c = em28xx_get_key_pinnacle_usb_grey; | |
743 | break; | |
744 | case EM2820_BOARD_HAUPPAUGE_WINTV_USB_2: | |
745 | rc->map_name = RC_MAP_HAUPPAUGE; | |
746 | ir->get_key_i2c = em28xx_get_key_em_haup; | |
c5540fbb | 747 | rc->allowed_protocols = RC_BIT_RC5; |
768da3db FS |
748 | break; |
749 | case EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE: | |
750 | rc->map_name = RC_MAP_WINFAST_USBII_DELUXE; | |
751 | ir->get_key_i2c = em28xx_get_key_winfast_usbii_deluxe; | |
752 | break; | |
753 | default: | |
754 | err = -ENODEV; | |
755 | goto error; | |
756 | } | |
757 | ||
78e719a5 FS |
758 | ir->i2c_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); |
759 | if (!ir->i2c_client) | |
760 | goto error; | |
761 | ir->i2c_client->adapter = &ir->dev->i2c_adap[dev->def_i2c_bus]; | |
762 | ir->i2c_client->addr = i2c_rc_dev_addr; | |
763 | ir->i2c_client->flags = 0; | |
764 | /* NOTE: all other fields of i2c_client are unused */ | |
768da3db FS |
765 | } else { /* internal device */ |
766 | switch (dev->chip_id) { | |
767 | case CHIP_ID_EM2860: | |
768 | case CHIP_ID_EM2883: | |
c5540fbb | 769 | rc->allowed_protocols = RC_BIT_RC5 | RC_BIT_NEC; |
768da3db FS |
770 | ir->get_key = default_polling_getkey; |
771 | break; | |
772 | case CHIP_ID_EM2884: | |
773 | case CHIP_ID_EM2874: | |
774 | case CHIP_ID_EM28174: | |
9f1d0bda | 775 | case CHIP_ID_EM28178: |
768da3db | 776 | ir->get_key = em2874_polling_getkey; |
c5540fbb DH |
777 | rc->allowed_protocols = RC_BIT_RC5 | RC_BIT_NEC | |
778 | RC_BIT_RC6_0; | |
768da3db FS |
779 | break; |
780 | default: | |
781 | err = -ENODEV; | |
782 | goto error; | |
783 | } | |
784 | ||
785 | rc->change_protocol = em28xx_ir_change_protocol; | |
786 | rc->map_name = dev->board.ir_codes; | |
787 | ||
788 | /* By default, keep protocol field untouched */ | |
789 | rc_type = RC_BIT_UNKNOWN; | |
790 | err = em28xx_ir_change_protocol(rc, &rc_type); | |
791 | if (err) | |
792 | goto error; | |
0dae8839 MCC |
793 | } |
794 | ||
4b92253a DH |
795 | /* This is how often we ask the chip for IR information */ |
796 | ir->polling = 100; /* ms */ | |
797 | ||
a924a499 | 798 | /* init input device */ |
ce8591ff | 799 | snprintf(ir->name, sizeof(ir->name), "%s IR", |
29b05e22 | 800 | dev_name(&dev->intf->dev)); |
a924a499 MCC |
801 | |
802 | usb_make_path(dev->udev, ir->phys, sizeof(ir->phys)); | |
803 | strlcat(ir->phys, "/input0", sizeof(ir->phys)); | |
804 | ||
d8b4b582 DH |
805 | rc->input_name = ir->name; |
806 | rc->input_phys = ir->phys; | |
807 | rc->input_id.bustype = BUS_USB; | |
808 | rc->input_id.version = 1; | |
809 | rc->input_id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor); | |
810 | rc->input_id.product = le16_to_cpu(dev->udev->descriptor.idProduct); | |
29b05e22 | 811 | rc->dev.parent = &dev->intf->dev; |
d8b4b582 | 812 | rc->driver_name = MODULE_NAME; |
a924a499 MCC |
813 | |
814 | /* all done */ | |
d8b4b582 | 815 | err = rc_register_device(rc); |
a924a499 | 816 | if (err) |
2f5741aa | 817 | goto error; |
a924a499 | 818 | |
29b05e22 | 819 | dev_info(&dev->intf->dev, "Input extension successfully initalized\n"); |
9634614f | 820 | |
a924a499 | 821 | return 0; |
d8b4b582 | 822 | |
2f5741aa | 823 | error: |
78e719a5 | 824 | kfree(ir->i2c_client); |
a924a499 | 825 | dev->ir = NULL; |
d8b4b582 | 826 | rc_free_device(rc); |
a924a499 MCC |
827 | kfree(ir); |
828 | return err; | |
829 | } | |
830 | ||
f4d4e765 | 831 | static int em28xx_ir_fini(struct em28xx *dev) |
a924a499 MCC |
832 | { |
833 | struct em28xx_IR *ir = dev->ir; | |
834 | ||
822b8dea MCC |
835 | if (dev->is_audio_only) { |
836 | /* Shouldn't initialize IR for this interface */ | |
837 | return 0; | |
838 | } | |
839 | ||
29b05e22 | 840 | dev_info(&dev->intf->dev, "Closing input extension\n"); |
aa929ad7 | 841 | |
f5222609 | 842 | em28xx_shutdown_buttons(dev); |
2fd6f8d1 | 843 | |
a924a499 MCC |
844 | /* skip detach on non attached boards */ |
845 | if (!ir) | |
47677e51 | 846 | goto ref_put; |
a924a499 | 847 | |
83f56f7c | 848 | rc_unregister_device(ir->rc); |
a924a499 | 849 | |
78e719a5 FS |
850 | kfree(ir->i2c_client); |
851 | ||
a924a499 | 852 | /* done */ |
6d514774 | 853 | kfree(ir); |
a924a499 | 854 | dev->ir = NULL; |
47677e51 MCC |
855 | |
856 | ref_put: | |
857 | kref_put(&dev->ref, em28xx_free_device); | |
858 | ||
a924a499 MCC |
859 | return 0; |
860 | } | |
861 | ||
5025076a SK |
862 | static int em28xx_ir_suspend(struct em28xx *dev) |
863 | { | |
864 | struct em28xx_IR *ir = dev->ir; | |
865 | ||
866 | if (dev->is_audio_only) | |
867 | return 0; | |
868 | ||
29b05e22 | 869 | dev_info(&dev->intf->dev, "Suspending input extension\n"); |
5025076a SK |
870 | if (ir) |
871 | cancel_delayed_work_sync(&ir->work); | |
872 | cancel_delayed_work_sync(&dev->buttons_query_work); | |
873 | /* is canceling delayed work sufficient or does the rc event | |
874 | kthread needs stopping? kthread is stopped in | |
875 | ir_raw_event_unregister() */ | |
876 | return 0; | |
877 | } | |
878 | ||
879 | static int em28xx_ir_resume(struct em28xx *dev) | |
880 | { | |
881 | struct em28xx_IR *ir = dev->ir; | |
882 | ||
883 | if (dev->is_audio_only) | |
884 | return 0; | |
885 | ||
29b05e22 | 886 | dev_info(&dev->intf->dev, "Resuming input extension\n"); |
5025076a SK |
887 | /* if suspend calls ir_raw_event_unregister(), the should call |
888 | ir_raw_event_register() */ | |
889 | if (ir) | |
890 | schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling)); | |
891 | if (dev->num_button_polling_addresses) | |
892 | schedule_delayed_work(&dev->buttons_query_work, | |
fdf1bc9f | 893 | msecs_to_jiffies(dev->button_polling_interval)); |
5025076a SK |
894 | return 0; |
895 | } | |
896 | ||
f4d4e765 EG |
897 | static struct em28xx_ops rc_ops = { |
898 | .id = EM28XX_RC, | |
899 | .name = "Em28xx Input Extension", | |
900 | .init = em28xx_ir_init, | |
901 | .fini = em28xx_ir_fini, | |
5025076a SK |
902 | .suspend = em28xx_ir_suspend, |
903 | .resume = em28xx_ir_resume, | |
f4d4e765 EG |
904 | }; |
905 | ||
906 | static int __init em28xx_rc_register(void) | |
907 | { | |
908 | return em28xx_register_extension(&rc_ops); | |
909 | } | |
910 | ||
911 | static void __exit em28xx_rc_unregister(void) | |
912 | { | |
913 | em28xx_unregister_extension(&rc_ops); | |
914 | } | |
915 | ||
916 | MODULE_LICENSE("GPL"); | |
37e59f87 | 917 | MODULE_AUTHOR("Mauro Carvalho Chehab"); |
d8992b09 MCC |
918 | MODULE_DESCRIPTION(DRIVER_DESC " - input interface"); |
919 | MODULE_VERSION(EM28XX_VERSION); | |
f4d4e765 EG |
920 | |
921 | module_init(em28xx_rc_register); | |
922 | module_exit(em28xx_rc_unregister); |