SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/media/video/bt8xx/bttv-input.c

   1 /*
   2  *
   3  * Copyright (c) 2003 Gerd Knorr
   4  * Copyright (c) 2003 Pavel Machek
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19  */
  20
  21 #include <linux/module.h>
  22 #include <linux/init.h>
  23 #include <linux/delay.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/input.h>
  26 #include <linux/slab.h>
  27
  28 #include "bttv.h"
  29 #include "bttvp.h"
  30
  31
  32 static int ir_debug;
  33 module_param(ir_debug, int, 0644);
  34 static int repeat_delay = 500;
  35 module_param(repeat_delay, int, 0644);
  36 static int repeat_period = 33;
  37 module_param(repeat_period, int, 0644);
  38
  39 static int ir_rc5_remote_gap = 885;
  40 module_param(ir_rc5_remote_gap, int, 0644);
  41 static int ir_rc5_key_timeout = 200;
  42 module_param(ir_rc5_key_timeout, int, 0644);
  43
  44 #undef dprintk
  45 #define dprintk(arg...) do {    \
  46         if (ir_debug >= 1)      \
  47                 printk(arg);    \
  48 } while (0)
  49
  50 #define DEVNAME "bttv-input"
  51
  52 /* ---------------------------------------------------------------------- */
  53
  54 static void ir_handle_key(struct bttv *btv)
  55 {
  56         struct card_ir *ir = btv->remote;
  57         u32 gpio,data;
  58
  59         /* read gpio value */
  60         gpio = bttv_gpio_read(&btv->c);
  61         if (ir->polling) {
  62                 if (ir->last_gpio == gpio)
  63                         return;
  64                 ir->last_gpio = gpio;
  65         }
  66
  67         /* extract data */
  68         data = ir_extract_bits(gpio, ir->mask_keycode);
  69         dprintk(KERN_INFO DEVNAME ": irq gpio=0x%x code=%d | %s%s%s\n",
  70                 gpio, data,
  71                 ir->polling               ? "poll"  : "irq",
  72                 (gpio & ir->mask_keydown) ? " down" : "",
  73                 (gpio & ir->mask_keyup)   ? " up"   : "");
  74
  75         if ((ir->mask_keydown  &&  (0 != (gpio & ir->mask_keydown))) ||
  76             (ir->mask_keyup    &&  (0 == (gpio & ir->mask_keyup)))) {
  77                 ir_input_keydown(ir->dev, &ir->ir, data);
  78         } else {
  79                 /* HACK: Probably, ir->mask_keydown is missing
  80                    for this board */
  81                 if (btv->c.type == BTTV_BOARD_WINFAST2000)
  82                         ir_input_keydown(ir->dev, &ir->ir, data);
  83
  84                 ir_input_nokey(ir->dev,&ir->ir);
  85         }
  86
  87 }
  88
  89 static void ir_enltv_handle_key(struct bttv *btv)
  90 {
  91         struct card_ir *ir = btv->remote;
  92         u32 gpio, data, keyup;
  93
  94         /* read gpio value */
  95         gpio = bttv_gpio_read(&btv->c);
  96
  97         /* extract data */
  98         data = ir_extract_bits(gpio, ir->mask_keycode);
  99
 100         /* Check if it is keyup */
 101         keyup = (gpio & ir->mask_keyup) ? 1 << 31 : 0;
 102
 103         if ((ir->last_gpio & 0x7f) != data) {
 104                 dprintk(KERN_INFO DEVNAME ": gpio=0x%x code=%d | %s\n",
 105                         gpio, data,
 106                         (gpio & ir->mask_keyup) ? " up" : "up/down");
 107
 108                 ir_input_keydown(ir->dev, &ir->ir, data);
 109                 if (keyup)
 110                         ir_input_nokey(ir->dev, &ir->ir);
 111         } else {
 112                 if ((ir->last_gpio & 1 << 31) == keyup)
 113                         return;
 114
 115                 dprintk(KERN_INFO DEVNAME ":(cnt) gpio=0x%x code=%d | %s\n",
 116                         gpio, data,
 117                         (gpio & ir->mask_keyup) ? " up" : "down");
 118
 119                 if (keyup)
 120                         ir_input_nokey(ir->dev, &ir->ir);
 121                 else
 122                         ir_input_keydown(ir->dev, &ir->ir, data);
 123         }
 124
 125         ir->last_gpio = data | keyup;
 126 }
 127
 128 void bttv_input_irq(struct bttv *btv)
 129 {
 130         struct card_ir *ir = btv->remote;
 131
 132         if (!ir->polling)
 133                 ir_handle_key(btv);
 134 }
 135
 136 static void bttv_input_timer(unsigned long data)
 137 {
 138         struct bttv *btv = (struct bttv*)data;
 139         struct card_ir *ir = btv->remote;
 140
 141         if (btv->c.type == BTTV_BOARD_ENLTV_FM_2)
 142                 ir_enltv_handle_key(btv);
 143         else
 144                 ir_handle_key(btv);
 145         mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
 146 }
 147
 148 /* ---------------------------------------------------------------*/
 149
 150 static int bttv_rc5_irq(struct bttv *btv)
 151 {
 152         struct card_ir *ir = btv->remote;
 153         struct timeval tv;
 154         u32 gpio;
 155         u32 gap;
 156         unsigned long current_jiffies;
 157
 158         /* read gpio port */
 159         gpio = bttv_gpio_read(&btv->c);
 160
 161         /* remote IRQ? */
 162         if (!(gpio & 0x20))
 163                 return 0;
 164
 165         /* get time of bit */
 166         current_jiffies = jiffies;
 167         do_gettimeofday(&tv);
 168
 169         /* avoid overflow with gap >1s */
 170         if (tv.tv_sec - ir->base_time.tv_sec > 1) {
 171                 gap = 200000;
 172         } else {
 173                 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
 174                     tv.tv_usec - ir->base_time.tv_usec;
 175         }
 176
 177         /* active code => add bit */
 178         if (ir->active) {
 179                 /* only if in the code (otherwise spurious IRQ or timer
 180                    late) */
 181                 if (ir->last_bit < 28) {
 182                         ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
 183                             ir_rc5_remote_gap;
 184                         ir->code |= 1 << ir->last_bit;
 185                 }
 186                 /* starting new code */
 187         } else {
 188                 ir->active = 1;
 189                 ir->code = 0;
 190                 ir->base_time = tv;
 191                 ir->last_bit = 0;
 192
 193                 mod_timer(&ir->timer_end,
 194                           current_jiffies + msecs_to_jiffies(30));
 195         }
 196
 197         /* toggle GPIO pin 4 to reset the irq */
 198         bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
 199         bttv_gpio_write(&btv->c, gpio | (1 << 4));
 200         return 1;
 201 }
 202
 203 /* ---------------------------------------------------------------------- */
 204
 205 static void bttv_ir_start(struct bttv *btv, struct card_ir *ir)
 206 {
 207         if (ir->polling) {
 208                 setup_timer(&ir->timer, bttv_input_timer, (unsigned long)btv);
 209                 ir->timer.expires  = jiffies + msecs_to_jiffies(1000);
 210                 add_timer(&ir->timer);
 211         } else if (ir->rc5_gpio) {
 212                 /* set timer_end for code completion */
 213                 init_timer(&ir->timer_end);
 214                 ir->timer_end.function = ir_rc5_timer_end;
 215                 ir->timer_end.data = (unsigned long)ir;
 216
 217                 init_timer(&ir->timer_keyup);
 218                 ir->timer_keyup.function = ir_rc5_timer_keyup;
 219                 ir->timer_keyup.data = (unsigned long)ir;
 220                 ir->shift_by = 1;
 221                 ir->start = 3;
 222                 ir->addr = 0x0;
 223                 ir->rc5_key_timeout = ir_rc5_key_timeout;
 224                 ir->rc5_remote_gap = ir_rc5_remote_gap;
 225         }
 226 }
 227
 228 static void bttv_ir_stop(struct bttv *btv)
 229 {
 230         if (btv->remote->polling) {
 231                 del_timer_sync(&btv->remote->timer);
 232                 flush_scheduled_work();
 233         }
 234
 235         if (btv->remote->rc5_gpio) {
 236                 u32 gpio;
 237
 238                 del_timer_sync(&btv->remote->timer_end);
 239                 flush_scheduled_work();
 240
 241                 gpio = bttv_gpio_read(&btv->c);
 242                 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
 243         }
 244 }
 245
 246 int bttv_input_init(struct bttv *btv)
 247 {
 248         struct card_ir *ir;
 249         struct ir_scancode_table *ir_codes = NULL;
 250         struct input_dev *input_dev;
 251         u64 ir_type = IR_TYPE_OTHER;
 252         int err = -ENOMEM;
 253
 254         if (!btv->has_remote)
 255                 return -ENODEV;
 256
 257         ir = kzalloc(sizeof(*ir),GFP_KERNEL);
 258         input_dev = input_allocate_device();
 259         if (!ir || !input_dev)
 260                 goto err_out_free;
 261
 262         /* detect & configure */
 263         switch (btv->c.type) {
 264         case BTTV_BOARD_AVERMEDIA:
 265         case BTTV_BOARD_AVPHONE98:
 266         case BTTV_BOARD_AVERMEDIA98:
 267                 ir_codes         = &ir_codes_avermedia_table;
 268                 ir->mask_keycode = 0xf88000;
 269                 ir->mask_keydown = 0x010000;
 270                 ir->polling      = 50; // ms
 271                 break;
 272
 273         case BTTV_BOARD_AVDVBT_761:
 274         case BTTV_BOARD_AVDVBT_771:
 275                 ir_codes         = &ir_codes_avermedia_dvbt_table;
 276                 ir->mask_keycode = 0x0f00c0;
 277                 ir->mask_keydown = 0x000020;
 278                 ir->polling      = 50; // ms
 279                 break;
 280
 281         case BTTV_BOARD_PXELVWPLTVPAK:
 282                 ir_codes         = &ir_codes_pixelview_table;
 283                 ir->mask_keycode = 0x003e00;
 284                 ir->mask_keyup   = 0x010000;
 285                 ir->polling      = 50; // ms
 286                 break;
 287         case BTTV_BOARD_PV_M4900:
 288         case BTTV_BOARD_PV_BT878P_9B:
 289         case BTTV_BOARD_PV_BT878P_PLUS:
 290                 ir_codes         = &ir_codes_pixelview_table;
 291                 ir->mask_keycode = 0x001f00;
 292                 ir->mask_keyup   = 0x008000;
 293                 ir->polling      = 50; // ms
 294                 break;
 295
 296         case BTTV_BOARD_WINFAST2000:
 297                 ir_codes         = &ir_codes_winfast_table;
 298                 ir->mask_keycode = 0x1f8;
 299                 break;
 300         case BTTV_BOARD_MAGICTVIEW061:
 301         case BTTV_BOARD_MAGICTVIEW063:
 302                 ir_codes         = &ir_codes_winfast_table;
 303                 ir->mask_keycode = 0x0008e000;
 304                 ir->mask_keydown = 0x00200000;
 305                 break;
 306         case BTTV_BOARD_APAC_VIEWCOMP:
 307                 ir_codes         = &ir_codes_apac_viewcomp_table;
 308                 ir->mask_keycode = 0x001f00;
 309                 ir->mask_keyup   = 0x008000;
 310                 ir->polling      = 50; // ms
 311                 break;
 312         case BTTV_BOARD_ASKEY_CPH03X:
 313         case BTTV_BOARD_CONCEPTRONIC_CTVFMI2:
 314         case BTTV_BOARD_CONTVFMI:
 315                 ir_codes         = &ir_codes_pixelview_table;
 316                 ir->mask_keycode = 0x001F00;
 317                 ir->mask_keyup   = 0x006000;
 318                 ir->polling      = 50; // ms
 319                 break;
 320         case BTTV_BOARD_NEBULA_DIGITV:
 321                 ir_codes = &ir_codes_nebula_table;
 322                 btv->custom_irq = bttv_rc5_irq;
 323                 ir->rc5_gpio = 1;
 324                 break;
 325         case BTTV_BOARD_MACHTV_MAGICTV:
 326                 ir_codes         = &ir_codes_apac_viewcomp_table;
 327                 ir->mask_keycode = 0x001F00;
 328                 ir->mask_keyup   = 0x004000;
 329                 ir->polling      = 50; /* ms */
 330                 break;
 331         case BTTV_BOARD_KOZUMI_KTV_01C:
 332                 ir_codes         = &ir_codes_pctv_sedna_table;
 333                 ir->mask_keycode = 0x001f00;
 334                 ir->mask_keyup   = 0x006000;
 335                 ir->polling      = 50; /* ms */
 336                 break;
 337         case BTTV_BOARD_ENLTV_FM_2:
 338                 ir_codes         = &ir_codes_encore_enltv2_table;
 339                 ir->mask_keycode = 0x00fd00;
 340                 ir->mask_keyup   = 0x000080;
 341                 ir->polling      = 1; /* ms */
 342                 ir->last_gpio    = ir_extract_bits(bttv_gpio_read(&btv->c),
 343                                                    ir->mask_keycode);
 344                 break;
 345         }
 346         if (NULL == ir_codes) {
 347                 dprintk(KERN_INFO "Ooops: IR config error [card=%d]\n", btv->c.type);
 348                 err = -ENODEV;
 349                 goto err_out_free;
 350         }
 351
 352         if (ir->rc5_gpio) {
 353                 u32 gpio;
 354                 /* enable remote irq */
 355                 bttv_gpio_inout(&btv->c, (1 << 4), 1 << 4);
 356                 gpio = bttv_gpio_read(&btv->c);
 357                 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
 358                 bttv_gpio_write(&btv->c, gpio | (1 << 4));
 359         } else {
 360                 /* init hardware-specific stuff */
 361                 bttv_gpio_inout(&btv->c, ir->mask_keycode | ir->mask_keydown, 0);
 362         }
 363
 364         /* init input device */
 365         ir->dev = input_dev;
 366
 367         snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
 368                  btv->c.type);
 369         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
 370                  pci_name(btv->c.pci));
 371
 372         err = ir_input_init(input_dev, &ir->ir, ir_type);
 373         if (err < 0)
 374                 goto err_out_free;
 375
 376         input_dev->name = ir->name;
 377         input_dev->phys = ir->phys;
 378         input_dev->id.bustype = BUS_PCI;
 379         input_dev->id.version = 1;
 380         if (btv->c.pci->subsystem_vendor) {
 381                 input_dev->id.vendor  = btv->c.pci->subsystem_vendor;
 382                 input_dev->id.product = btv->c.pci->subsystem_device;
 383         } else {
 384                 input_dev->id.vendor  = btv->c.pci->vendor;
 385                 input_dev->id.product = btv->c.pci->device;
 386         }
 387         input_dev->dev.parent = &btv->c.pci->dev;
 388
 389         btv->remote = ir;
 390         bttv_ir_start(btv, ir);
 391
 392         /* all done */
 393         err = ir_input_register(btv->remote->dev, ir_codes, NULL);
 394         if (err)
 395                 goto err_out_stop;
 396
 397         /* the remote isn't as bouncy as a keyboard */
 398         ir->dev->rep[REP_DELAY] = repeat_delay;
 399         ir->dev->rep[REP_PERIOD] = repeat_period;
 400
 401         return 0;
 402
 403  err_out_stop:
 404         bttv_ir_stop(btv);
 405         btv->remote = NULL;
 406  err_out_free:
 407         kfree(ir);
 408         return err;
 409 }
 410
 411 void bttv_input_fini(struct bttv *btv)
 412 {
 413         if (btv->remote == NULL)
 414                 return;
 415
 416         bttv_ir_stop(btv);
 417         ir_input_unregister(btv->remote->dev);
 418         kfree(btv->remote);
 419         btv->remote = NULL;
 420 }
 421
 422
 423 /*
 424  * Local variables:
 425  * c-basic-offset: 8
 426  * End:
 427  */