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Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -08001/*
Mauro Carvalho Chehabf7abcd32005-11-08 21:38:25 -08002 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>
Mauro Carvalho Chehab2e7c6dc2006-04-03 07:53:40 -03006 Mauro Carvalho Chehab <mchehab@infradead.org>
Mauro Carvalho Chehabf7abcd32005-11-08 21:38:25 -08007 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
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -080022 */
23
24#include <linux/module.h>
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -080025#include <linux/init.h>
26#include <linux/delay.h>
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -080027#include <linux/interrupt.h>
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -080028#include <linux/usb.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090029#include <linux/slab.h>
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -080030
Mauro Carvalho Chehabf7abcd32005-11-08 21:38:25 -080031#include "em28xx.h"
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -080032
Devin Heitmuellera9fc52b2008-06-28 08:57:06 -030033#define EM28XX_SNAPSHOT_KEY KEY_CAMERA
34#define EM28XX_SBUTTON_QUERY_INTERVAL 500
35#define EM28XX_R0C_USBSUSP_SNAPSHOT 0x20
36
Mauro Carvalho Chehabc8793b02008-01-13 15:42:17 -030037static unsigned int ir_debug;
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -080038module_param(ir_debug, int, 0644);
Douglas Schilling Landgraf6ea54d92008-04-17 21:41:10 -030039MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -080040
Mauro Carvalho Chehab727e6252010-03-12 21:18:14 -030041#define MODULE_NAME "em28xx"
42
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -030043#define i2cdprintk(fmt, arg...) \
Douglas Schilling Landgraf6ea54d92008-04-17 21:41:10 -030044 if (ir_debug) { \
Jean Delvare1df8e982009-05-13 16:48:07 -030045 printk(KERN_DEBUG "%s/ir: " fmt, ir->name , ## arg); \
Douglas Schilling Landgraf6ea54d92008-04-17 21:41:10 -030046 }
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -080047
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -030048#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
Devin Heitmueller4b922532008-11-13 03:15:55 -030057struct 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
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -030064struct em28xx_IR {
65 struct em28xx *dev;
David Härdemand8b4b582010-10-29 16:08:23 -030066 struct rc_dev *rc;
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -030067 char name[32];
68 char phys[32];
69
70 /* poll external decoder */
71 int polling;
Jean Delvaref263bac2009-03-07 07:43:01 -030072 struct delayed_work work;
Mauro Carvalho Chehab02781552009-11-27 23:28:40 -030073 unsigned int full_code:1;
Devin Heitmueller4b922532008-11-13 03:15:55 -030074 unsigned int last_readcount;
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -030075
Devin Heitmueller4b922532008-11-13 03:15:55 -030076 int (*get_key)(struct em28xx_IR *, struct em28xx_ir_poll_result *);
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -030077};
78
79/**********************************************************
80 I2C IR based get keycodes - should be used with ir-kbd-i2c
81 **********************************************************/
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -080082
Mauro Carvalho Chehabc8793b02008-01-13 15:42:17 -030083int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
Markus Rechbergere43f14a2005-11-08 21:37:35 -080084{
85 unsigned char b;
86
87 /* poll IR chip */
Jean Delvarec668f322009-05-13 16:48:50 -030088 if (1 != i2c_master_recv(ir->c, &b, 1)) {
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -030089 i2cdprintk("read error\n");
Markus Rechbergere43f14a2005-11-08 21:37:35 -080090 return -EIO;
91 }
92
93 /* it seems that 0xFE indicates that a button is still hold
Mauro Carvalho Chehab4f9c05a2005-11-08 21:37:36 -080094 down, while 0xff indicates that no button is hold
95 down. 0xfe sequences are sometimes interrupted by 0xFF */
Markus Rechbergere43f14a2005-11-08 21:37:35 -080096
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -030097 i2cdprintk("key %02x\n", b);
Markus Rechbergere43f14a2005-11-08 21:37:35 -080098
Mauro Carvalho Chehab4f9c05a2005-11-08 21:37:36 -080099 if (b == 0xff)
Markus Rechbergere43f14a2005-11-08 21:37:35 -0800100 return 0;
101
Mauro Carvalho Chehab4f9c05a2005-11-08 21:37:36 -0800102 if (b == 0xfe)
Markus Rechbergere43f14a2005-11-08 21:37:35 -0800103 /* keep old data */
104 return 1;
105
106 *ir_key = b;
107 *ir_raw = b;
108 return 1;
109}
110
Mauro Carvalho Chehabc8793b02008-01-13 15:42:17 -0300111int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -0800112{
113 unsigned char buf[2];
Mauro Carvalho Chehabb7799742009-12-05 23:24:50 -0300114 u16 code;
115 int size;
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -0800116
117 /* poll IR chip */
Mauro Carvalho Chehabb7799742009-12-05 23:24:50 -0300118 size = i2c_master_recv(ir->c, buf, sizeof(buf));
119
120 if (size != 2)
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -0800121 return -EIO;
122
123 /* Does eliminate repeated parity code */
Douglas Schilling Landgraf6ea54d92008-04-17 21:41:10 -0300124 if (buf[1] == 0xff)
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -0800125 return 0;
126
Douglas Schilling Landgraf6ea54d92008-04-17 21:41:10 -0300127 ir->old = buf[1];
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -0800128
Mauro Carvalho Chehabb7799742009-12-05 23:24:50 -0300129 /*
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 */
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -0800150
Mauro Carvalho Chehabb7799742009-12-05 23:24:50 -0300151 i2cdprintk("ir hauppauge (em2840): code=0x%02x (rcv=0x%02x%02x)\n",
152 code, buf[1], buf[0]);
Mauro Carvalho Chehabd5e52652005-11-08 21:37:32 -0800153
154 /* return key */
155 *ir_key = code;
156 *ir_raw = code;
157 return 1;
158}
159
Mauro Carvalho Chehabc8793b02008-01-13 15:42:17 -0300160int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
161 u32 *ir_raw)
Markus Rechberger366cc642006-01-15 21:04:27 -0200162{
163 unsigned char buf[3];
164
165 /* poll IR chip */
166
Jean Delvarec668f322009-05-13 16:48:50 -0300167 if (3 != i2c_master_recv(ir->c, buf, 3)) {
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300168 i2cdprintk("read error\n");
Markus Rechberger366cc642006-01-15 21:04:27 -0200169 return -EIO;
170 }
171
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300172 i2cdprintk("key %02x\n", buf[2]&0x3f);
Douglas Schilling Landgraf6ea54d92008-04-17 21:41:10 -0300173 if (buf[0] != 0x00)
Markus Rechberger366cc642006-01-15 21:04:27 -0200174 return 0;
Markus Rechberger366cc642006-01-15 21:04:27 -0200175
176 *ir_key = buf[2]&0x3f;
177 *ir_raw = buf[2]&0x3f;
178
179 return 1;
180}
181
Magnus Almca39d842009-11-13 05:48:24 -0300182int 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
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300212/**********************************************************
213 Poll based get keycode functions
214 **********************************************************/
215
Devin Heitmueller4b922532008-11-13 03:15:55 -0300216/* This is for the em2860/em2880 */
217static int default_polling_getkey(struct em28xx_IR *ir,
218 struct em28xx_ir_poll_result *poll_result)
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300219{
220 struct em28xx *dev = ir->dev;
221 int rc;
Devin Heitmueller4b922532008-11-13 03:15:55 -0300222 u8 msg[3] = { 0, 0, 0 };
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300223
Mauro Carvalho Chehab0a6b8a82008-11-12 18:46:01 -0300224 /* Read key toggle, brand, and key code
225 on registers 0x45, 0x46 and 0x47
226 */
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300227 rc = dev->em28xx_read_reg_req_len(dev, 0, EM28XX_R45_IR,
Mauro Carvalho Chehab0a6b8a82008-11-12 18:46:01 -0300228 msg, sizeof(msg));
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300229 if (rc < 0)
230 return rc;
231
Devin Heitmueller4b922532008-11-13 03:15:55 -0300232 /* 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
247static 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;
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300277}
278
279/**********************************************************
280 Polling code for em28xx
281 **********************************************************/
282
283static void em28xx_ir_handle_key(struct em28xx_IR *ir)
284{
Devin Heitmueller4b922532008-11-13 03:15:55 -0300285 int result;
Devin Heitmueller4b922532008-11-13 03:15:55 -0300286 struct em28xx_ir_poll_result poll_result;
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300287
Devin Heitmueller4b922532008-11-13 03:15:55 -0300288 /* read the registers containing the IR status */
289 result = ir->get_key(ir, &poll_result);
Mauro Carvalho Chehab603044d2010-06-27 08:32:11 -0300290 if (unlikely(result < 0)) {
Devin Heitmueller4b922532008-11-13 03:15:55 -0300291 dprintk("ir->get_key() failed %d\n", result);
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300292 return;
Devin Heitmueller4b922532008-11-13 03:15:55 -0300293 }
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300294
Mauro Carvalho Chehab603044d2010-06-27 08:32:11 -0300295 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]);
David Härdemana4695852010-06-07 16:32:23 -0300299 if (ir->full_code)
Mauro Carvalho Chehabca866742010-11-17 13:53:11 -0300300 rc_keydown(ir->rc,
David Härdemana4695852010-06-07 16:32:23 -0300301 poll_result.rc_address << 8 |
302 poll_result.rc_data[0],
303 poll_result.toggle_bit);
304 else
Mauro Carvalho Chehabca866742010-11-17 13:53:11 -0300305 rc_keydown(ir->rc,
David Härdemana4695852010-06-07 16:32:23 -0300306 poll_result.rc_data[0],
307 poll_result.toggle_bit);
David Härdemana4695852010-06-07 16:32:23 -0300308
Mauro Carvalho Chehab20ae9742011-11-20 12:23:54 -0200309 if (ir->dev->chip_id == CHIP_ID_EM2874 ||
310 ir->dev->chip_id == CHIP_ID_EM2884)
Mauro Carvalho Chehab603044d2010-06-27 08:32:11 -0300311 /* 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 }
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300320}
321
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300322static void em28xx_ir_work(struct work_struct *work)
323{
Jean Delvaref263bac2009-03-07 07:43:01 -0300324 struct em28xx_IR *ir = container_of(work, struct em28xx_IR, work.work);
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300325
326 em28xx_ir_handle_key(ir);
Jean Delvaref263bac2009-03-07 07:43:01 -0300327 schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300328}
329
David Härdemand8b4b582010-10-29 16:08:23 -0300330static int em28xx_ir_start(struct rc_dev *rc)
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300331{
David Härdemand8b4b582010-10-29 16:08:23 -0300332 struct em28xx_IR *ir = rc->priv;
Mauro Carvalho Chehabc373cab2010-04-07 22:57:04 -0300333
Jean Delvaref263bac2009-03-07 07:43:01 -0300334 INIT_DELAYED_WORK(&ir->work, em28xx_ir_work);
335 schedule_delayed_work(&ir->work, 0);
Mauro Carvalho Chehabc373cab2010-04-07 22:57:04 -0300336
337 return 0;
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300338}
339
David Härdemand8b4b582010-10-29 16:08:23 -0300340static void em28xx_ir_stop(struct rc_dev *rc)
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300341{
David Härdemand8b4b582010-10-29 16:08:23 -0300342 struct em28xx_IR *ir = rc->priv;
Mauro Carvalho Chehabc373cab2010-04-07 22:57:04 -0300343
Jean Delvaref263bac2009-03-07 07:43:01 -0300344 cancel_delayed_work_sync(&ir->work);
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300345}
346
Mauro Carvalho Chehab52b66142010-11-17 14:20:52 -0300347int em28xx_ir_change_protocol(struct rc_dev *rc_dev, u64 rc_type)
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300348{
Mauro Carvalho Chehab950b0f52009-12-14 02:54:22 -0300349 int rc = 0;
David Härdemand8b4b582010-10-29 16:08:23 -0300350 struct em28xx_IR *ir = rc_dev->priv;
Mauro Carvalho Chehab950b0f52009-12-14 02:54:22 -0300351 struct em28xx *dev = ir->dev;
352 u8 ir_config = EM2874_IR_RC5;
Mauro Carvalho Chehab1bad4292009-12-05 08:27:49 -0300353
354 /* Adjust xclk based o IR table for RC5/NEC tables */
Mauro Carvalho Chehab950b0f52009-12-14 02:54:22 -0300355
Mauro Carvalho Chehab52b66142010-11-17 14:20:52 -0300356 if (rc_type == RC_TYPE_RC5) {
Mauro Carvalho Chehab1bad4292009-12-05 08:27:49 -0300357 dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE;
358 ir->full_code = 1;
Mauro Carvalho Chehab52b66142010-11-17 14:20:52 -0300359 } else if (rc_type == RC_TYPE_NEC) {
Mauro Carvalho Chehab1bad4292009-12-05 08:27:49 -0300360 dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE;
361 ir_config = EM2874_IR_NEC;
362 ir->full_code = 1;
Mauro Carvalho Chehab52b66142010-11-17 14:20:52 -0300363 } else if (rc_type != RC_TYPE_UNKNOWN)
Mauro Carvalho Chehab950b0f52009-12-14 02:54:22 -0300364 rc = -EINVAL;
365
Mauro Carvalho Chehab1bad4292009-12-05 08:27:49 -0300366 em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk,
367 EM28XX_XCLK_IR_RC5_MODE);
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300368
Devin Heitmueller4b922532008-11-13 03:15:55 -0300369 /* 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;
Mauro Carvalho Chehab91812fa2008-11-12 14:05:46 -0300374 break;
Mauro Carvalho Chehab20ae9742011-11-20 12:23:54 -0200375 case CHIP_ID_EM2884:
Devin Heitmueller4b922532008-11-13 03:15:55 -0300376 case CHIP_ID_EM2874:
Antti Palosaaria24ec442011-05-25 16:56:37 -0300377 case CHIP_ID_EM28174:
Devin Heitmueller4b922532008-11-13 03:15:55 -0300378 ir->get_key = em2874_polling_getkey;
Devin Heitmueller4b922532008-11-13 03:15:55 -0300379 em28xx_write_regs(dev, EM2874_R50_IR_CONFIG, &ir_config, 1);
380 break;
381 default:
Mauro Carvalho Chehab20ae9742011-11-20 12:23:54 -0200382 printk("Unrecognized em28xx chip id 0x%02x: IR not supported\n",
383 dev->chip_id);
Mauro Carvalho Chehab950b0f52009-12-14 02:54:22 -0300384 rc = -EINVAL;
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300385 }
386
Mauro Carvalho Chehab950b0f52009-12-14 02:54:22 -0300387 return rc;
388}
389
Ezequiel García9d9f4792012-03-26 09:13:33 -0300390void 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
Mauro Carvalho Chehab950b0f52009-12-14 02:54:22 -0300434int em28xx_ir_init(struct em28xx *dev)
435{
436 struct em28xx_IR *ir;
David Härdemand8b4b582010-10-29 16:08:23 -0300437 struct rc_dev *rc;
Mauro Carvalho Chehab950b0f52009-12-14 02:54:22 -0300438 int err = -ENOMEM;
439
440 if (dev->board.ir_codes == NULL) {
441 /* No remote control support */
442 return 0;
443 }
444
445 ir = kzalloc(sizeof(*ir), GFP_KERNEL);
David Härdemand8b4b582010-10-29 16:08:23 -0300446 rc = rc_allocate_device();
447 if (!ir || !rc)
Mauro Carvalho Chehab950b0f52009-12-14 02:54:22 -0300448 goto err_out_free;
449
450 /* record handles to ourself */
451 ir->dev = dev;
452 dev->ir = ir;
David Härdemand8b4b582010-10-29 16:08:23 -0300453 ir->rc = rc;
Mauro Carvalho Chehab950b0f52009-12-14 02:54:22 -0300454
455 /*
456 * em2874 supports more protocols. For now, let's just announce
457 * the two protocols that were already tested
458 */
Mauro Carvalho Chehab52b66142010-11-17 14:20:52 -0300459 rc->allowed_protos = RC_TYPE_RC5 | RC_TYPE_NEC;
David Härdemand8b4b582010-10-29 16:08:23 -0300460 rc->priv = ir;
461 rc->change_protocol = em28xx_ir_change_protocol;
462 rc->open = em28xx_ir_start;
463 rc->close = em28xx_ir_stop;
Mauro Carvalho Chehabc373cab2010-04-07 22:57:04 -0300464
465 /* By default, keep protocol field untouched */
Mauro Carvalho Chehab52b66142010-11-17 14:20:52 -0300466 err = em28xx_ir_change_protocol(rc, RC_TYPE_UNKNOWN);
Mauro Carvalho Chehabc373cab2010-04-07 22:57:04 -0300467 if (err)
468 goto err_out_free;
Mauro Carvalho Chehab950b0f52009-12-14 02:54:22 -0300469
Devin Heitmueller4b922532008-11-13 03:15:55 -0300470 /* This is how often we ask the chip for IR information */
471 ir->polling = 100; /* ms */
472
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300473 /* 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
David Härdemand8b4b582010-10-29 16:08:23 -0300480 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;
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300489
490 /* all done */
David Härdemand8b4b582010-10-29 16:08:23 -0300491 err = rc_register_device(rc);
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300492 if (err)
493 goto err_out_stop;
494
Ezequiel García2fd6f8d2012-03-26 09:13:32 -0300495 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
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300504 return 0;
David Härdemand8b4b582010-10-29 16:08:23 -0300505
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300506 err_out_stop:
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300507 dev->ir = NULL;
508 err_out_free:
David Härdemand8b4b582010-10-29 16:08:23 -0300509 rc_free_device(rc);
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300510 kfree(ir);
511 return err;
512}
513
514int em28xx_ir_fini(struct em28xx *dev)
515{
516 struct em28xx_IR *ir = dev->ir;
517
Ezequiel García2fd6f8d2012-03-26 09:13:32 -0300518 em28xx_deregister_snapshot_button(dev);
519
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300520 /* skip detach on non attached boards */
521 if (!ir)
522 return 0;
523
Mauro Carvalho Chehab6d514772011-07-29 02:26:59 -0300524 if (ir->rc)
525 rc_unregister_device(ir->rc);
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300526
527 /* done */
Mauro Carvalho Chehab6d514772011-07-29 02:26:59 -0300528 kfree(ir);
Mauro Carvalho Chehaba924a492008-11-12 08:41:29 -0300529 dev->ir = NULL;
530 return 0;
531}
532
533/**********************************************************
534 Handle Webcam snapshot button
535 **********************************************************/
536
Devin Heitmuellera9fc52b2008-06-28 08:57:06 -0300537static 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
565void 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
609void em28xx_deregister_snapshot_button(struct em28xx *dev)
610{
611 if (dev->sbutton_input_dev != NULL) {
612 em28xx_info("Deregistering snapshot button\n");
Tejun Heoafe2c512010-12-14 16:21:17 +0100613 cancel_delayed_work_sync(&dev->sbutton_query_work);
Devin Heitmuellera9fc52b2008-06-28 08:57:06 -0300614 input_unregister_device(dev->sbutton_input_dev);
615 dev->sbutton_input_dev = NULL;
616 }
617 return;
618}