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(struct timer_list * t)87 static void av7110_emit_keyup(struct timer_list *t)
88 {
89 struct infrared *ir = from_timer(ir, t, keyup_timer);
90
91 if (!ir || !ir->keypressed)
92 return;
93
94 input_report_key(ir->input_dev, ir->last_key, 0);
95 input_sync(ir->input_dev);
96 ir->keypressed = false;
97 }
98
99
100 /* tasklet */
av7110_emit_key(unsigned long parm)101 static void av7110_emit_key(unsigned long parm)
102 {
103 struct infrared *ir = (struct infrared *) parm;
104 u32 ircom = ir->ir_command;
105 u8 data;
106 u8 addr;
107 u16 toggle;
108 u16 keycode;
109
110 /* extract device address and data */
111 switch (ir->protocol) {
112 case IR_RC5: /* RC5: 5 bits device address, 6 bits data */
113 data = ircom & 0x3f;
114 addr = (ircom >> 6) & 0x1f;
115 toggle = ircom & 0x0800;
116 break;
117
118 case IR_RCMM: /* RCMM: ? bits device address, ? bits data */
119 data = ircom & 0xff;
120 addr = (ircom >> 8) & 0x1f;
121 toggle = ircom & 0x8000;
122 break;
123
124 case IR_RC5_EXT: /* extended RC5: 5 bits device address, 7 bits data */
125 data = ircom & 0x3f;
126 addr = (ircom >> 6) & 0x1f;
127 /* invert 7th data bit for backward compatibility with RC5 keymaps */
128 if (!(ircom & 0x1000))
129 data |= 0x40;
130 toggle = ircom & 0x0800;
131 break;
132
133 default:
134 printk("%s invalid protocol %x\n", __func__, ir->protocol);
135 return;
136 }
137
138 input_event(ir->input_dev, EV_MSC, MSC_RAW, (addr << 16) | data);
139 input_event(ir->input_dev, EV_MSC, MSC_SCAN, data);
140
141 keycode = ir->key_map[data];
142
143 dprintk(16, "%s: code %08x -> addr %i data 0x%02x -> keycode %i\n",
144 __func__, ircom, addr, data, keycode);
145
146 /* check device address */
147 if (!(ir->device_mask & (1 << addr)))
148 return;
149
150 if (!keycode) {
151 printk ("%s: code %08x -> addr %i data 0x%02x -> unknown key!\n",
152 __func__, ircom, addr, data);
153 return;
154 }
155
156 if (ir->keypressed &&
157 (ir->last_key != keycode || toggle != ir->last_toggle))
158 input_event(ir->input_dev, EV_KEY, ir->last_key, 0);
159
160 input_event(ir->input_dev, EV_KEY, keycode, 1);
161 input_sync(ir->input_dev);
162
163 ir->keypressed = true;
164 ir->last_key = keycode;
165 ir->last_toggle = toggle;
166
167 mod_timer(&ir->keyup_timer, jiffies + UP_TIMEOUT);
168 }
169
170
171 /* register with input layer */
input_register_keys(struct infrared * ir)172 static void input_register_keys(struct infrared *ir)
173 {
174 int i;
175
176 set_bit(EV_KEY, ir->input_dev->evbit);
177 set_bit(EV_REP, ir->input_dev->evbit);
178 set_bit(EV_MSC, ir->input_dev->evbit);
179
180 set_bit(MSC_RAW, ir->input_dev->mscbit);
181 set_bit(MSC_SCAN, ir->input_dev->mscbit);
182
183 memset(ir->input_dev->keybit, 0, sizeof(ir->input_dev->keybit));
184
185 for (i = 0; i < ARRAY_SIZE(ir->key_map); i++) {
186 if (ir->key_map[i] > KEY_MAX)
187 ir->key_map[i] = 0;
188 else if (ir->key_map[i] > KEY_RESERVED)
189 set_bit(ir->key_map[i], ir->input_dev->keybit);
190 }
191
192 ir->input_dev->keycode = ir->key_map;
193 ir->input_dev->keycodesize = sizeof(ir->key_map[0]);
194 ir->input_dev->keycodemax = ARRAY_SIZE(ir->key_map);
195 }
196
197 /* check for configuration changes */
av7110_check_ir_config(struct av7110 * av7110,int force)198 int av7110_check_ir_config(struct av7110 *av7110, int force)
199 {
200 int i;
201 int modified = force;
202 int ret = -ENODEV;
203
204 for (i = 0; i < av_cnt; i++)
205 if (av7110 == av_list[i])
206 break;
207
208 if (i < av_cnt && av7110) {
209 if ((av7110->ir.protocol & 1) != ir_protocol[i] ||
210 av7110->ir.inversion != ir_inversion[i])
211 modified = true;
212
213 if (modified) {
214 /* protocol */
215 if (ir_protocol[i]) {
216 ir_protocol[i] = 1;
217 av7110->ir.protocol = IR_RCMM;
218 av7110->ir.ir_config = 0x0001;
219 } else if (FW_VERSION(av7110->arm_app) >= 0x2620) {
220 av7110->ir.protocol = IR_RC5_EXT;
221 av7110->ir.ir_config = 0x0002;
222 } else {
223 av7110->ir.protocol = IR_RC5;
224 av7110->ir.ir_config = 0x0000;
225 }
226 /* inversion */
227 if (ir_inversion[i]) {
228 ir_inversion[i] = 1;
229 av7110->ir.ir_config |= 0x8000;
230 }
231 av7110->ir.inversion = ir_inversion[i];
232 /* update ARM */
233 ret = av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetIR, 1,
234 av7110->ir.ir_config);
235 } else
236 ret = 0;
237
238 /* address */
239 if (av7110->ir.device_mask != ir_device_mask[i])
240 av7110->ir.device_mask = ir_device_mask[i];
241 }
242
243 return ret;
244 }
245
246
247 /* /proc/av7110_ir interface */
av7110_ir_proc_write(struct file * file,const char __user * buffer,size_t count,loff_t * pos)248 static ssize_t av7110_ir_proc_write(struct file *file, const char __user *buffer,
249 size_t count, loff_t *pos)
250 {
251 char *page;
252 u32 ir_config;
253 int size = sizeof ir_config + sizeof av_list[0]->ir.key_map;
254 int i;
255
256 if (count < size)
257 return -EINVAL;
258
259 page = vmalloc(size);
260 if (!page)
261 return -ENOMEM;
262
263 if (copy_from_user(page, buffer, size)) {
264 vfree(page);
265 return -EFAULT;
266 }
267
268 memcpy(&ir_config, page, sizeof ir_config);
269
270 for (i = 0; i < av_cnt; i++) {
271 /* keymap */
272 memcpy(av_list[i]->ir.key_map, page + sizeof ir_config,
273 sizeof(av_list[i]->ir.key_map));
274 /* protocol, inversion, address */
275 ir_protocol[i] = ir_config & 0x0001;
276 ir_inversion[i] = ir_config & 0x8000 ? 1 : 0;
277 if (ir_config & 0x4000)
278 ir_device_mask[i] = 1 << ((ir_config >> 16) & 0x1f);
279 else
280 ir_device_mask[i] = IR_ALL;
281 /* update configuration */
282 av7110_check_ir_config(av_list[i], false);
283 input_register_keys(&av_list[i]->ir);
284 }
285 vfree(page);
286 return count;
287 }
288
289 static const struct file_operations av7110_ir_proc_fops = {
290 .owner = THIS_MODULE,
291 .write = av7110_ir_proc_write,
292 .llseek = noop_llseek,
293 };
294
295 /* interrupt handler */
ir_handler(struct av7110 * av7110,u32 ircom)296 static void ir_handler(struct av7110 *av7110, u32 ircom)
297 {
298 dprintk(4, "ir command = %08x\n", ircom);
299 av7110->ir.ir_command = ircom;
300 tasklet_schedule(&av7110->ir.ir_tasklet);
301 }
302
303
av7110_ir_init(struct av7110 * av7110)304 int av7110_ir_init(struct av7110 *av7110)
305 {
306 struct input_dev *input_dev;
307 static struct proc_dir_entry *e;
308 int err;
309
310 if (av_cnt >= ARRAY_SIZE(av_list))
311 return -ENOSPC;
312
313 av_list[av_cnt++] = av7110;
314 av7110_check_ir_config(av7110, true);
315
316 timer_setup(&av7110->ir.keyup_timer, av7110_emit_keyup, 0);
317
318 input_dev = input_allocate_device();
319 if (!input_dev)
320 return -ENOMEM;
321
322 av7110->ir.input_dev = input_dev;
323 snprintf(av7110->ir.input_phys, sizeof(av7110->ir.input_phys),
324 "pci-%s/ir0", pci_name(av7110->dev->pci));
325
326 input_dev->name = "DVB on-card IR receiver";
327
328 input_dev->phys = av7110->ir.input_phys;
329 input_dev->id.bustype = BUS_PCI;
330 input_dev->id.version = 2;
331 if (av7110->dev->pci->subsystem_vendor) {
332 input_dev->id.vendor = av7110->dev->pci->subsystem_vendor;
333 input_dev->id.product = av7110->dev->pci->subsystem_device;
334 } else {
335 input_dev->id.vendor = av7110->dev->pci->vendor;
336 input_dev->id.product = av7110->dev->pci->device;
337 }
338 input_dev->dev.parent = &av7110->dev->pci->dev;
339 /* initial keymap */
340 memcpy(av7110->ir.key_map, default_key_map, sizeof av7110->ir.key_map);
341 input_register_keys(&av7110->ir);
342 err = input_register_device(input_dev);
343 if (err) {
344 input_free_device(input_dev);
345 return err;
346 }
347
348 /*
349 * Input core's default autorepeat is 33 cps with 250 msec
350 * delay, let's adjust to numbers more suitable for remote
351 * control.
352 */
353 input_enable_softrepeat(input_dev, 250, 125);
354
355 if (av_cnt == 1) {
356 e = proc_create("av7110_ir", S_IWUSR, NULL, &av7110_ir_proc_fops);
357 if (e)
358 proc_set_size(e, 4 + 256 * sizeof(u16));
359 }
360
361 tasklet_init(&av7110->ir.ir_tasklet, av7110_emit_key, (unsigned long) &av7110->ir);
362 av7110->ir.ir_handler = ir_handler;
363
364 return 0;
365 }
366
367
av7110_ir_exit(struct av7110 * av7110)368 void av7110_ir_exit(struct av7110 *av7110)
369 {
370 int i;
371
372 if (av_cnt == 0)
373 return;
374
375 del_timer_sync(&av7110->ir.keyup_timer);
376 av7110->ir.ir_handler = NULL;
377 tasklet_kill(&av7110->ir.ir_tasklet);
378
379 for (i = 0; i < av_cnt; i++)
380 if (av_list[i] == av7110) {
381 av_list[i] = av_list[av_cnt-1];
382 av_list[av_cnt-1] = NULL;
383 break;
384 }
385
386 if (av_cnt == 1)
387 remove_proc_entry("av7110_ir", NULL);
388
389 input_unregister_device(av7110->ir.input_dev);
390
391 av_cnt--;
392 }
393
394 //MODULE_AUTHOR("Holger Waechtler <holger@convergence.de>, Oliver Endriss <o.endriss@gmx.de>");
395 //MODULE_LICENSE("GPL");
396
