1 /*
2 * Driver for the remote control of SAA7146 based AV7110 cards
3 *
4 * Copyright (C) 1999-2003 Holger Waechtler <holger@convergence.de>
5 * Copyright (C) 2003-2007 Oliver Endriss <o.endriss@gmx.de>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 * To obtain the license, point your browser to
17 * http://www.gnu.org/copyleft/gpl.html
18 *
19 */
20
21
22 #include <linux/types.h>
23 #include <linux/init.h>
24 #include <linux/module.h>
25 #include <linux/proc_fs.h>
26 #include <linux/kernel.h>
27 #include <linux/bitops.h>
28
29 #include "av7110.h"
30 #include "av7110_hw.h"
31
32
33 #define AV_CNT 4
34
35 #define IR_RC5 0
36 #define IR_RCMM 1
37 #define IR_RC5_EXT 2 /* internal only */
38
39 #define IR_ALL 0xffffffff
40
41 #define UP_TIMEOUT (HZ*7/25)
42
43
44 /* Note: enable ir debugging by or'ing debug with 16 */
45
46 static int ir_protocol[AV_CNT] = { IR_RCMM, IR_RCMM, IR_RCMM, IR_RCMM};
47 module_param_array(ir_protocol, int, NULL, 0644);
48 MODULE_PARM_DESC(ir_protocol, "Infrared protocol: 0 RC5, 1 RCMM (default)");
49
50 static int ir_inversion[AV_CNT];
51 module_param_array(ir_inversion, int, NULL, 0644);
52 MODULE_PARM_DESC(ir_inversion, "Inversion of infrared signal: 0 not inverted (default), 1 inverted");
53
54 static uint ir_device_mask[AV_CNT] = { IR_ALL, IR_ALL, IR_ALL, IR_ALL };
55 module_param_array(ir_device_mask, uint, NULL, 0644);
56 MODULE_PARM_DESC(ir_device_mask, "Bitmask of infrared devices: bit 0..31 = device 0..31 (default: all)");
57
58
59 static int av_cnt;
60 static struct av7110 *av_list[AV_CNT];
61
62 static u16 default_key_map [256] = {
63 KEY_0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7,
64 KEY_8, KEY_9, KEY_BACK, 0, KEY_POWER, KEY_MUTE, 0, KEY_INFO,
65 KEY_VOLUMEUP, KEY_VOLUMEDOWN, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
66 KEY_CHANNELUP, KEY_CHANNELDOWN, 0, 0, 0, 0, 0, 0,
67 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
68 0, 0, 0, 0, KEY_TEXT, 0, 0, KEY_TV, 0, 0, 0, 0, 0, KEY_SETUP, 0, 0,
69 0, 0, 0, KEY_SUBTITLE, 0, 0, KEY_LANGUAGE, 0,
70 KEY_RADIO, 0, 0, 0, 0, KEY_EXIT, 0, 0,
71 KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT, KEY_OK, 0, 0, 0,
72 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_RED, KEY_GREEN, KEY_YELLOW,
73 KEY_BLUE, 0, 0, 0, 0, 0, 0, 0, KEY_MENU, KEY_LIST, 0, 0, 0, 0, 0, 0,
74 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
75 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
76 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
77 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
78 0, 0, 0, 0, KEY_UP, KEY_UP, KEY_DOWN, KEY_DOWN,
79 0, 0, 0, 0, KEY_EPG, 0, 0, 0,
80 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
81 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
82 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_VCR
83 };
84
85
86 /* key-up timer */
av7110_emit_keyup(unsigned long parm)87 static void av7110_emit_keyup(unsigned long parm)
88 {
89 struct infrared *ir = (struct infrared *) parm;
90
91 if (!ir || !test_bit(ir->last_key, ir->input_dev->key))
92 return;
93
94 input_report_key(ir->input_dev, ir->last_key, 0);
95 input_sync(ir->input_dev);
96 }
97
98
99 /* tasklet */
av7110_emit_key(unsigned long parm)100 static void av7110_emit_key(unsigned long parm)
101 {
102 struct infrared *ir = (struct infrared *) parm;
103 u32 ircom = ir->ir_command;
104 u8 data;
105 u8 addr;
106 u16 toggle;
107 u16 keycode;
108
109 /* extract device address and data */
110 switch (ir->protocol) {
111 case IR_RC5: /* RC5: 5 bits device address, 6 bits data */
112 data = ircom & 0x3f;
113 addr = (ircom >> 6) & 0x1f;
114 toggle = ircom & 0x0800;
115 break;
116
117 case IR_RCMM: /* RCMM: ? bits device address, ? bits data */
118 data = ircom & 0xff;
119 addr = (ircom >> 8) & 0x1f;
120 toggle = ircom & 0x8000;
121 break;
122
123 case IR_RC5_EXT: /* extended RC5: 5 bits device address, 7 bits data */
124 data = ircom & 0x3f;
125 addr = (ircom >> 6) & 0x1f;
126 /* invert 7th data bit for backward compatibility with RC5 keymaps */
127 if (!(ircom & 0x1000))
128 data |= 0x40;
129 toggle = ircom & 0x0800;
130 break;
131
132 default:
133 printk("%s invalid protocol %x\n", __func__, ir->protocol);
134 return;
135 }
136
137 input_event(ir->input_dev, EV_MSC, MSC_RAW, (addr << 16) | data);
138 input_event(ir->input_dev, EV_MSC, MSC_SCAN, data);
139
140 keycode = ir->key_map[data];
141
142 dprintk(16, "%s: code %08x -> addr %i data 0x%02x -> keycode %i\n",
143 __func__, ircom, addr, data, keycode);
144
145 /* check device address */
146 if (!(ir->device_mask & (1 << addr)))
147 return;
148
149 if (!keycode) {
150 printk ("%s: code %08x -> addr %i data 0x%02x -> unknown key!\n",
151 __func__, ircom, addr, data);
152 return;
153 }
154
155 if (timer_pending(&ir->keyup_timer)) {
156 del_timer(&ir->keyup_timer);
157 if (ir->last_key != keycode || toggle != ir->last_toggle) {
158 ir->delay_timer_finished = 0;
159 input_event(ir->input_dev, EV_KEY, ir->last_key, 0);
160 input_event(ir->input_dev, EV_KEY, keycode, 1);
161 input_sync(ir->input_dev);
162 } else if (ir->delay_timer_finished) {
163 input_event(ir->input_dev, EV_KEY, keycode, 2);
164 input_sync(ir->input_dev);
165 }
166 } else {
167 ir->delay_timer_finished = 0;
168 input_event(ir->input_dev, EV_KEY, keycode, 1);
169 input_sync(ir->input_dev);
170 }
171
172 ir->last_key = keycode;
173 ir->last_toggle = toggle;
174
175 ir->keyup_timer.expires = jiffies + UP_TIMEOUT;
176 add_timer(&ir->keyup_timer);
177
178 }
179
180
181 /* register with input layer */
input_register_keys(struct infrared * ir)182 static void input_register_keys(struct infrared *ir)
183 {
184 int i;
185
186 set_bit(EV_KEY, ir->input_dev->evbit);
187 set_bit(EV_REP, ir->input_dev->evbit);
188 set_bit(EV_MSC, ir->input_dev->evbit);
189
190 set_bit(MSC_RAW, ir->input_dev->mscbit);
191 set_bit(MSC_SCAN, ir->input_dev->mscbit);
192
193 memset(ir->input_dev->keybit, 0, sizeof(ir->input_dev->keybit));
194
195 for (i = 0; i < ARRAY_SIZE(ir->key_map); i++) {
196 if (ir->key_map[i] > KEY_MAX)
197 ir->key_map[i] = 0;
198 else if (ir->key_map[i] > KEY_RESERVED)
199 set_bit(ir->key_map[i], ir->input_dev->keybit);
200 }
201
202 ir->input_dev->keycode = ir->key_map;
203 ir->input_dev->keycodesize = sizeof(ir->key_map[0]);
204 ir->input_dev->keycodemax = ARRAY_SIZE(ir->key_map);
205 }
206
207
208 /* called by the input driver after rep[REP_DELAY] ms */
input_repeat_key(unsigned long parm)209 static void input_repeat_key(unsigned long parm)
210 {
211 struct infrared *ir = (struct infrared *) parm;
212
213 ir->delay_timer_finished = 1;
214 }
215
216
217 /* check for configuration changes */
av7110_check_ir_config(struct av7110 * av7110,int force)218 int av7110_check_ir_config(struct av7110 *av7110, int force)
219 {
220 int i;
221 int modified = force;
222 int ret = -ENODEV;
223
224 for (i = 0; i < av_cnt; i++)
225 if (av7110 == av_list[i])
226 break;
227
228 if (i < av_cnt && av7110) {
229 if ((av7110->ir.protocol & 1) != ir_protocol[i] ||
230 av7110->ir.inversion != ir_inversion[i])
231 modified = true;
232
233 if (modified) {
234 /* protocol */
235 if (ir_protocol[i]) {
236 ir_protocol[i] = 1;
237 av7110->ir.protocol = IR_RCMM;
238 av7110->ir.ir_config = 0x0001;
239 } else if (FW_VERSION(av7110->arm_app) >= 0x2620) {
240 av7110->ir.protocol = IR_RC5_EXT;
241 av7110->ir.ir_config = 0x0002;
242 } else {
243 av7110->ir.protocol = IR_RC5;
244 av7110->ir.ir_config = 0x0000;
245 }
246 /* inversion */
247 if (ir_inversion[i]) {
248 ir_inversion[i] = 1;
249 av7110->ir.ir_config |= 0x8000;
250 }
251 av7110->ir.inversion = ir_inversion[i];
252 /* update ARM */
253 ret = av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetIR, 1,
254 av7110->ir.ir_config);
255 } else
256 ret = 0;
257
258 /* address */
259 if (av7110->ir.device_mask != ir_device_mask[i])
260 av7110->ir.device_mask = ir_device_mask[i];
261 }
262
263 return ret;
264 }
265
266
267 /* /proc/av7110_ir interface */
av7110_ir_proc_write(struct file * file,const char __user * buffer,size_t count,loff_t * pos)268 static ssize_t av7110_ir_proc_write(struct file *file, const char __user *buffer,
269 size_t count, loff_t *pos)
270 {
271 char *page;
272 u32 ir_config;
273 int size = sizeof ir_config + sizeof av_list[0]->ir.key_map;
274 int i;
275
276 if (count < size)
277 return -EINVAL;
278
279 page = vmalloc(size);
280 if (!page)
281 return -ENOMEM;
282
283 if (copy_from_user(page, buffer, size)) {
284 vfree(page);
285 return -EFAULT;
286 }
287
288 memcpy(&ir_config, page, sizeof ir_config);
289
290 for (i = 0; i < av_cnt; i++) {
291 /* keymap */
292 memcpy(av_list[i]->ir.key_map, page + sizeof ir_config,
293 sizeof(av_list[i]->ir.key_map));
294 /* protocol, inversion, address */
295 ir_protocol[i] = ir_config & 0x0001;
296 ir_inversion[i] = ir_config & 0x8000 ? 1 : 0;
297 if (ir_config & 0x4000)
298 ir_device_mask[i] = 1 << ((ir_config >> 16) & 0x1f);
299 else
300 ir_device_mask[i] = IR_ALL;
301 /* update configuration */
302 av7110_check_ir_config(av_list[i], false);
303 input_register_keys(&av_list[i]->ir);
304 }
305 vfree(page);
306 return count;
307 }
308
309 static const struct file_operations av7110_ir_proc_fops = {
310 .owner = THIS_MODULE,
311 .write = av7110_ir_proc_write,
312 .llseek = noop_llseek,
313 };
314
315 /* interrupt handler */
ir_handler(struct av7110 * av7110,u32 ircom)316 static void ir_handler(struct av7110 *av7110, u32 ircom)
317 {
318 dprintk(4, "ir command = %08x\n", ircom);
319 av7110->ir.ir_command = ircom;
320 tasklet_schedule(&av7110->ir.ir_tasklet);
321 }
322
323
av7110_ir_init(struct av7110 * av7110)324 int av7110_ir_init(struct av7110 *av7110)
325 {
326 struct input_dev *input_dev;
327 static struct proc_dir_entry *e;
328 int err;
329
330 if (av_cnt >= ARRAY_SIZE(av_list))
331 return -ENOSPC;
332
333 av_list[av_cnt++] = av7110;
334 av7110_check_ir_config(av7110, true);
335
336 setup_timer(&av7110->ir.keyup_timer, av7110_emit_keyup,
337 (unsigned long)&av7110->ir);
338
339 input_dev = input_allocate_device();
340 if (!input_dev)
341 return -ENOMEM;
342
343 av7110->ir.input_dev = input_dev;
344 snprintf(av7110->ir.input_phys, sizeof(av7110->ir.input_phys),
345 "pci-%s/ir0", pci_name(av7110->dev->pci));
346
347 input_dev->name = "DVB on-card IR receiver";
348
349 input_dev->phys = av7110->ir.input_phys;
350 input_dev->id.bustype = BUS_PCI;
351 input_dev->id.version = 2;
352 if (av7110->dev->pci->subsystem_vendor) {
353 input_dev->id.vendor = av7110->dev->pci->subsystem_vendor;
354 input_dev->id.product = av7110->dev->pci->subsystem_device;
355 } else {
356 input_dev->id.vendor = av7110->dev->pci->vendor;
357 input_dev->id.product = av7110->dev->pci->device;
358 }
359 input_dev->dev.parent = &av7110->dev->pci->dev;
360 /* initial keymap */
361 memcpy(av7110->ir.key_map, default_key_map, sizeof av7110->ir.key_map);
362 input_register_keys(&av7110->ir);
363 err = input_register_device(input_dev);
364 if (err) {
365 input_free_device(input_dev);
366 return err;
367 }
368 input_dev->timer.function = input_repeat_key;
369 input_dev->timer.data = (unsigned long) &av7110->ir;
370
371 if (av_cnt == 1) {
372 e = proc_create("av7110_ir", S_IWUSR, NULL, &av7110_ir_proc_fops);
373 if (e)
374 proc_set_size(e, 4 + 256 * sizeof(u16));
375 }
376
377 tasklet_init(&av7110->ir.ir_tasklet, av7110_emit_key, (unsigned long) &av7110->ir);
378 av7110->ir.ir_handler = ir_handler;
379
380 return 0;
381 }
382
383
av7110_ir_exit(struct av7110 * av7110)384 void av7110_ir_exit(struct av7110 *av7110)
385 {
386 int i;
387
388 if (av_cnt == 0)
389 return;
390
391 del_timer_sync(&av7110->ir.keyup_timer);
392 av7110->ir.ir_handler = NULL;
393 tasklet_kill(&av7110->ir.ir_tasklet);
394
395 for (i = 0; i < av_cnt; i++)
396 if (av_list[i] == av7110) {
397 av_list[i] = av_list[av_cnt-1];
398 av_list[av_cnt-1] = NULL;
399 break;
400 }
401
402 if (av_cnt == 1)
403 remove_proc_entry("av7110_ir", NULL);
404
405 input_unregister_device(av7110->ir.input_dev);
406
407 av_cnt--;
408 }
409
410 //MODULE_AUTHOR("Holger Waechtler <holger@convergence.de>, Oliver Endriss <o.endriss@gmx.de>");
411 //MODULE_LICENSE("GPL");
412