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