drivers/media/dvb/ttpci/av7110_ir.c

   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  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20  * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
  21  *
  22  */
  23
  24
  25 #include <linux/types.h>
  26 #include <linux/init.h>
  27 #include <linux/module.h>
  28 #include <linux/moduleparam.h>
  29 #include <linux/proc_fs.h>
  30 #include <linux/kernel.h>
  31 #include <asm/bitops.h>
  32
  33 #include "av7110.h"
  34 #include "av7110_hw.h"
  35
  36
  37 #define AV_CNT          4
  38
  39 #define IR_RC5          0
  40 #define IR_RCMM         1
  41 #define IR_RC5_EXT      2 /* internal only */
  42
  43 #define IR_ALL          0xffffffff
  44
  45 #define UP_TIMEOUT      (HZ*7/25)
  46
  47
  48 /* Note: enable ir debugging by or'ing debug with 16 */
  49
  50 static int ir_protocol[AV_CNT] = { IR_RCMM, IR_RCMM, IR_RCMM, IR_RCMM};
  51 module_param_array(ir_protocol, int, NULL, 0644);
  52 MODULE_PARM_DESC(ir_protocol, "Infrared protocol: 0 RC5, 1 RCMM (default)");
  53
  54 static int ir_inversion[AV_CNT];
  55 module_param_array(ir_inversion, int, NULL, 0644);
  56 MODULE_PARM_DESC(ir_inversion, "Inversion of infrared signal: 0 not inverted (default), 1 inverted");
  57
  58 static uint ir_device_mask[AV_CNT] = { IR_ALL, IR_ALL, IR_ALL, IR_ALL };
  59 module_param_array(ir_device_mask, uint, NULL, 0644);
  60 MODULE_PARM_DESC(ir_device_mask, "Bitmask of infrared devices: bit 0..31 = device 0..31 (default: all)");
  61
  62
  63 static int av_cnt;
  64 static struct av7110 *av_list[AV_CNT];
  65
  66 static u16 default_key_map [256] = {
  67         KEY_0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7,
  68         KEY_8, KEY_9, KEY_BACK, 0, KEY_POWER, KEY_MUTE, 0, KEY_INFO,
  69         KEY_VOLUMEUP, KEY_VOLUMEDOWN, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  70         KEY_CHANNELUP, KEY_CHANNELDOWN, 0, 0, 0, 0, 0, 0,
  71         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  72         0, 0, 0, 0, KEY_TEXT, 0, 0, KEY_TV, 0, 0, 0, 0, 0, KEY_SETUP, 0, 0,
  73         0, 0, 0, KEY_SUBTITLE, 0, 0, KEY_LANGUAGE, 0,
  74         KEY_RADIO, 0, 0, 0, 0, KEY_EXIT, 0, 0,
  75         KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT, KEY_OK, 0, 0, 0,
  76         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_RED, KEY_GREEN, KEY_YELLOW,
  77         KEY_BLUE, 0, 0, 0, 0, 0, 0, 0, KEY_MENU, KEY_LIST, 0, 0, 0, 0, 0, 0,
  78         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  79         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 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, KEY_UP, KEY_UP, KEY_DOWN, KEY_DOWN,
  83         0, 0, 0, 0, KEY_EPG, 0, 0, 0,
  84         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  85         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  86         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_VCR
  87 };
  88
  89
  90 /* key-up timer */
  91 static void av7110_emit_keyup(unsigned long parm)
  92 {
  93         struct infrared *ir = (struct infrared *) parm;
  94
  95         if (!ir || !test_bit(ir->last_key, ir->input_dev->key))
  96                 return;
  97
  98         input_report_key(ir->input_dev, ir->last_key, 0);
  99         input_sync(ir->input_dev);
 100 }
 101
 102
 103 /* tasklet */
 104 static void av7110_emit_key(unsigned long parm)
 105 {
 106         struct infrared *ir = (struct infrared *) parm;
 107         u32 ircom = ir->ir_command;
 108         u8 data;
 109         u8 addr;
 110         u16 toggle;
 111         u16 keycode;
 112
 113         /* extract device address and data */
 114         switch (ir->protocol) {
 115         case IR_RC5: /* RC5: 5 bits device address, 6 bits data */
 116                 data = ircom & 0x3f;
 117                 addr = (ircom >> 6) & 0x1f;
 118                 toggle = ircom & 0x0800;
 119                 break;
 120
 121         case IR_RCMM: /* RCMM: ? bits device address, ? bits data */
 122                 data = ircom & 0xff;
 123                 addr = (ircom >> 8) & 0x1f;
 124                 toggle = ircom & 0x8000;
 125                 break;
 126
 127         case IR_RC5_EXT: /* extended RC5: 5 bits device address, 7 bits data */
 128                 data = ircom & 0x3f;
 129                 addr = (ircom >> 6) & 0x1f;
 130                 /* invert 7th data bit for backward compatibility with RC5 keymaps */
 131                 if (!(ircom & 0x1000))
 132                         data |= 0x40;
 133                 toggle = ircom & 0x0800;
 134                 break;
 135
 136         default:
 137                 printk("%s invalid protocol %x\n", __FUNCTION__, ir->protocol);
 138                 return;
 139         }
 140
 141         input_event(ir->input_dev, EV_MSC, MSC_RAW, (addr << 16) | data);
 142         input_event(ir->input_dev, EV_MSC, MSC_SCAN, data);
 143
 144         keycode = ir->key_map[data];
 145
 146         dprintk(16, "%s: code %08x -> addr %i data 0x%02x -> keycode %i\n",
 147                 __FUNCTION__, ircom, addr, data, keycode);
 148
 149         /* check device address */
 150         if (!(ir->device_mask & (1 << addr)))
 151                 return;
 152
 153         if (!keycode) {
 154                 printk ("%s: code %08x -> addr %i data 0x%02x -> unknown key!\n",
 155                         __FUNCTION__, ircom, addr, data);
 156                 return;
 157         }
 158
 159         if (timer_pending(&ir->keyup_timer)) {
 160                 del_timer(&ir->keyup_timer);
 161                 if (ir->last_key != keycode || toggle != ir->last_toggle) {
 162                         ir->delay_timer_finished = 0;
 163                         input_event(ir->input_dev, EV_KEY, ir->last_key, 0);
 164                         input_event(ir->input_dev, EV_KEY, keycode, 1);
 165                         input_sync(ir->input_dev);
 166                 } else if (ir->delay_timer_finished) {
 167                         input_event(ir->input_dev, EV_KEY, keycode, 2);
 168                         input_sync(ir->input_dev);
 169                 }
 170         } else {
 171                 ir->delay_timer_finished = 0;
 172                 input_event(ir->input_dev, EV_KEY, keycode, 1);
 173                 input_sync(ir->input_dev);
 174         }
 175
 176         ir->last_key = keycode;
 177         ir->last_toggle = toggle;
 178
 179         ir->keyup_timer.expires = jiffies + UP_TIMEOUT;
 180         add_timer(&ir->keyup_timer);
 181
 182 }
 183
 184
 185 /* register with input layer */
 186 static void input_register_keys(struct infrared *ir)
 187 {
 188         int i;
 189
 190         set_bit(EV_KEY, ir->input_dev->evbit);
 191         set_bit(EV_REP, ir->input_dev->evbit);
 192         set_bit(EV_MSC, ir->input_dev->evbit);
 193
 194         set_bit(MSC_RAW, ir->input_dev->mscbit);
 195         set_bit(MSC_SCAN, ir->input_dev->mscbit);
 196
 197         memset(ir->input_dev->keybit, 0, sizeof(ir->input_dev->keybit));
 198
 199         for (i = 0; i < ARRAY_SIZE(ir->key_map); i++) {
 200                 if (ir->key_map[i] > KEY_MAX)
 201                         ir->key_map[i] = 0;
 202                 else if (ir->key_map[i] > KEY_RESERVED)
 203                         set_bit(ir->key_map[i], ir->input_dev->keybit);
 204         }
 205
 206         ir->input_dev->keycode = ir->key_map;
 207         ir->input_dev->keycodesize = sizeof(ir->key_map[0]);
 208         ir->input_dev->keycodemax = ARRAY_SIZE(ir->key_map);
 209 }
 210
 211
 212 /* called by the input driver after rep[REP_DELAY] ms */
 213 static void input_repeat_key(unsigned long parm)
 214 {
 215         struct infrared *ir = (struct infrared *) parm;
 216
 217         ir->delay_timer_finished = 1;
 218 }
 219
 220
 221 /* check for configuration changes */
 222 int av7110_check_ir_config(struct av7110 *av7110, int force)
 223 {
 224         int i;
 225         int modified = force;
 226         int ret = -ENODEV;
 227
 228         for (i = 0; i < av_cnt; i++)
 229                 if (av7110 == av_list[i])
 230                         break;
 231
 232         if (i < av_cnt && av7110) {
 233                 if ((av7110->ir.protocol & 1) != ir_protocol[i] ||
 234                     av7110->ir.inversion != ir_inversion[i])
 235                         modified = true;
 236
 237                 if (modified) {
 238                         /* protocol */
 239                         if (ir_protocol[i]) {
 240                                 ir_protocol[i] = 1;
 241                                 av7110->ir.protocol = IR_RCMM;
 242                                 av7110->ir.ir_config = 0x0001;
 243                         } else if (FW_VERSION(av7110->arm_app) >= 0x2620) {
 244                                 av7110->ir.protocol = IR_RC5_EXT;
 245                                 av7110->ir.ir_config = 0x0002;
 246                         } else {
 247                                 av7110->ir.protocol = IR_RC5;
 248                                 av7110->ir.ir_config = 0x0000;
 249                         }
 250                         /* inversion */
 251                         if (ir_inversion[i]) {
 252                                 ir_inversion[i] = 1;
 253                                 av7110->ir.ir_config |= 0x8000;
 254                         }
 255                         av7110->ir.inversion = ir_inversion[i];
 256                         /* update ARM */
 257                         ret = av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetIR, 1,
 258                                                 av7110->ir.ir_config);
 259                 } else
 260                         ret = 0;
 261
 262                 /* address */
 263                 if (av7110->ir.device_mask != ir_device_mask[i])
 264                         av7110->ir.device_mask = ir_device_mask[i];
 265         }
 266
 267         return ret;
 268 }
 269
 270
 271 /* /proc/av7110_ir interface */
 272 static int av7110_ir_write_proc(struct file *file, const char __user *buffer,
 273                                 unsigned long count, void *data)
 274 {
 275         char *page;
 276         u32 ir_config;
 277         int size = sizeof ir_config + sizeof av_list[0]->ir.key_map;
 278         int i;
 279
 280         if (count < size)
 281                 return -EINVAL;
 282
 283         page = (char *) vmalloc(size);
 284         if (!page)
 285                 return -ENOMEM;
 286
 287         if (copy_from_user(page, buffer, size)) {
 288                 vfree(page);
 289                 return -EFAULT;
 290         }
 291
 292         memcpy(&ir_config, page, sizeof ir_config);
 293
 294         for (i = 0; i < av_cnt; i++) {
 295                 /* keymap */
 296                 memcpy(av_list[i]->ir.key_map, page + sizeof ir_config,
 297                         sizeof(av_list[i]->ir.key_map));
 298                 /* protocol, inversion, address */
 299                 ir_protocol[i] = ir_config & 0x0001;
 300                 ir_inversion[i] = ir_config & 0x8000 ? 1 : 0;
 301                 if (ir_config & 0x4000)
 302                         ir_device_mask[i] = 1 << ((ir_config >> 16) & 0x1f);
 303                 else
 304                         ir_device_mask[i] = IR_ALL;
 305                 /* update configuration */
 306                 av7110_check_ir_config(av_list[i], false);
 307                 input_register_keys(&av_list[i]->ir);
 308         }
 309         vfree(page);
 310         return count;
 311 }
 312
 313
 314 /* interrupt handler */
 315 static void ir_handler(struct av7110 *av7110, u32 ircom)
 316 {
 317         dprintk(4, "ir command = %08x\n", ircom);
 318         av7110->ir.ir_command = ircom;
 319         tasklet_schedule(&av7110->ir.ir_tasklet);
 320 }
 321
 322
 323 int __devinit av7110_ir_init(struct av7110 *av7110)
 324 {
 325         struct input_dev *input_dev;
 326         static struct proc_dir_entry *e;
 327         int err;
 328
 329         if (av_cnt >= ARRAY_SIZE(av_list))
 330                 return -ENOSPC;
 331
 332         av_list[av_cnt++] = av7110;
 333         av7110_check_ir_config(av7110, true);
 334
 335         init_timer(&av7110->ir.keyup_timer);
 336         av7110->ir.keyup_timer.function = av7110_emit_keyup;
 337         av7110->ir.keyup_timer.data = (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->cdev.dev = &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 = create_proc_entry("av7110_ir", S_IFREG | S_IRUGO | S_IWUSR, NULL);
 373                 if (e) {
 374                         e->write_proc = av7110_ir_write_proc;
 375                         e->size = 4 + 256 * sizeof(u16);
 376                 }
 377         }
 378
 379         tasklet_init(&av7110->ir.ir_tasklet, av7110_emit_key, (unsigned long) &av7110->ir);
 380         av7110->ir.ir_handler = ir_handler;
 381
 382         return 0;
 383 }
 384
 385
 386 void __devexit av7110_ir_exit(struct av7110 *av7110)
 387 {
 388         int i;
 389
 390         if (av_cnt == 0)
 391                 return;
 392
 393         del_timer_sync(&av7110->ir.keyup_timer);
 394         av7110->ir.ir_handler = NULL;
 395         tasklet_kill(&av7110->ir.ir_tasklet);
 396
 397         for (i = 0; i < av_cnt; i++)
 398                 if (av_list[i] == av7110) {
 399                         av_list[i] = av_list[av_cnt-1];
 400                         av_list[av_cnt-1] = NULL;
 401                         break;
 402                 }
 403
 404         if (av_cnt == 1)
 405                 remove_proc_entry("av7110_ir", NULL);
 406
 407         input_unregister_device(av7110->ir.input_dev);
 408
 409         av_cnt--;
 410 }
 411
 412 //MODULE_AUTHOR("Holger Waechtler <holger@convergence.de>, Oliver Endriss <o.endriss@gmx.de>");
 413 //MODULE_LICENSE("GPL");