drivers/media/video/saa7134/saa7134-input.c

   1 /*
   2  *
   3  * handle saa7134 IR remotes via linux kernel input layer.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  18  *
  19  */
  20
  21 #include <linux/module.h>
  22 #include <linux/moduleparam.h>
  23 #include <linux/init.h>
  24 #include <linux/delay.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/input.h>
  27
  28 #include "saa7134-reg.h"
  29 #include "saa7134.h"
  30
  31 static unsigned int disable_ir = 0;
  32 module_param(disable_ir, int, 0444);
  33 MODULE_PARM_DESC(disable_ir,"disable infrared remote support");
  34
  35 static unsigned int ir_debug = 0;
  36 module_param(ir_debug, int, 0644);
  37 MODULE_PARM_DESC(ir_debug,"enable debug messages [IR]");
  38
  39 static int pinnacle_remote = 0;
  40 module_param(pinnacle_remote, int, 0644);    /* Choose Pinnacle PCTV remote */
  41 MODULE_PARM_DESC(pinnacle_remote, "Specify Pinnacle PCTV remote: 0=coloured, 1=grey (defaults to 0)");
  42
  43 #define dprintk(fmt, arg...)    if (ir_debug) \
  44         printk(KERN_DEBUG "%s/ir: " fmt, dev->name , ## arg)
  45 #define i2cdprintk(fmt, arg...)    if (ir_debug) \
  46         printk(KERN_DEBUG "%s/ir: " fmt, ir->c.name , ## arg)
  47
  48 /* -------------------- GPIO generic keycode builder -------------------- */
  49
  50 static int build_key(struct saa7134_dev *dev)
  51 {
  52         struct saa7134_ir *ir = dev->remote;
  53         u32 gpio, data;
  54
  55         /* rising SAA7134_GPIO_GPRESCAN reads the status */
  56         saa_clearb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN);
  57         saa_setb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN);
  58
  59         gpio = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2);
  60         if (ir->polling) {
  61                 if (ir->last_gpio == gpio)
  62                         return 0;
  63                 ir->last_gpio = gpio;
  64         }
  65
  66         data = ir_extract_bits(gpio, ir->mask_keycode);
  67         dprintk("build_key gpio=0x%x mask=0x%x data=%d\n",
  68                 gpio, ir->mask_keycode, data);
  69
  70         if (ir->polling) {
  71                 if ((ir->mask_keydown  &&  (0 != (gpio & ir->mask_keydown))) ||
  72                     (ir->mask_keyup    &&  (0 == (gpio & ir->mask_keyup)))) {
  73                         ir_input_keydown(ir->dev, &ir->ir, data, data);
  74                 } else {
  75                         ir_input_nokey(ir->dev, &ir->ir);
  76                 }
  77         }
  78         else {  /* IRQ driven mode - handle key press and release in one go */
  79                 if ((ir->mask_keydown  &&  (0 != (gpio & ir->mask_keydown))) ||
  80                     (ir->mask_keyup    &&  (0 == (gpio & ir->mask_keyup)))) {
  81                         ir_input_keydown(ir->dev, &ir->ir, data, data);
  82                         ir_input_nokey(ir->dev, &ir->ir);
  83                 }
  84         }
  85
  86         return 0;
  87 }
  88
  89 /* --------------------- Chip specific I2C key builders ----------------- */
  90
  91 static int get_key_purpletv(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
  92 {
  93         unsigned char b;
  94
  95         /* poll IR chip */
  96         if (1 != i2c_master_recv(&ir->c,&b,1)) {
  97                 i2cdprintk("read error\n");
  98                 return -EIO;
  99         }
 100
 101         /* no button press */
 102         if (b==0)
 103                 return 0;
 104
 105         /* repeating */
 106         if (b & 0x80)
 107                 return 1;
 108
 109         *ir_key = b;
 110         *ir_raw = b;
 111         return 1;
 112 }
 113
 114 static int get_key_hvr1110(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 115 {
 116         unsigned char buf[5], cod4, code3, code4;
 117
 118         /* poll IR chip */
 119         if (5 != i2c_master_recv(&ir->c,buf,5))
 120                 return -EIO;
 121
 122         cod4    = buf[4];
 123         code4   = (cod4 >> 2);
 124         code3   = buf[3];
 125         if (code3 == 0)
 126                 /* no key pressed */
 127                 return 0;
 128
 129         /* return key */
 130         *ir_key = code4;
 131         *ir_raw = code4;
 132         return 1;
 133 }
 134
 135 void saa7134_input_irq(struct saa7134_dev *dev)
 136 {
 137         struct saa7134_ir *ir = dev->remote;
 138
 139         if (!ir->polling)
 140                 build_key(dev);
 141 }
 142
 143 static void saa7134_input_timer(unsigned long data)
 144 {
 145         struct saa7134_dev *dev = (struct saa7134_dev*)data;
 146         struct saa7134_ir *ir = dev->remote;
 147         unsigned long timeout;
 148
 149         build_key(dev);
 150         timeout = jiffies + (ir->polling * HZ / 1000);
 151         mod_timer(&ir->timer, timeout);
 152 }
 153
 154 static void saa7134_ir_start(struct saa7134_dev *dev, struct saa7134_ir *ir)
 155 {
 156         if (ir->polling) {
 157                 init_timer(&ir->timer);
 158                 ir->timer.function = saa7134_input_timer;
 159                 ir->timer.data     = (unsigned long)dev;
 160                 ir->timer.expires  = jiffies + HZ;
 161                 add_timer(&ir->timer);
 162         }
 163 }
 164
 165 static void saa7134_ir_stop(struct saa7134_dev *dev)
 166 {
 167         if (dev->remote->polling)
 168                 del_timer_sync(&dev->remote->timer);
 169 }
 170
 171 int saa7134_input_init1(struct saa7134_dev *dev)
 172 {
 173         struct saa7134_ir *ir;
 174         struct input_dev *input_dev;
 175         IR_KEYTAB_TYPE *ir_codes = NULL;
 176         u32 mask_keycode = 0;
 177         u32 mask_keydown = 0;
 178         u32 mask_keyup   = 0;
 179         int polling      = 0;
 180         int ir_type      = IR_TYPE_OTHER;
 181         int err;
 182
 183         if (dev->has_remote != SAA7134_REMOTE_GPIO)
 184                 return -ENODEV;
 185         if (disable_ir)
 186                 return -ENODEV;
 187
 188         /* detect & configure */
 189         switch (dev->board) {
 190         case SAA7134_BOARD_FLYVIDEO2000:
 191         case SAA7134_BOARD_FLYVIDEO3000:
 192         case SAA7134_BOARD_FLYTVPLATINUM_FM:
 193         case SAA7134_BOARD_FLYTVPLATINUM_MINI2:
 194                 ir_codes     = ir_codes_flyvideo;
 195                 mask_keycode = 0xEC00000;
 196                 mask_keydown = 0x0040000;
 197                 break;
 198         case SAA7134_BOARD_CINERGY400:
 199         case SAA7134_BOARD_CINERGY600:
 200         case SAA7134_BOARD_CINERGY600_MK3:
 201                 ir_codes     = ir_codes_cinergy;
 202                 mask_keycode = 0x00003f;
 203                 mask_keyup   = 0x040000;
 204                 break;
 205         case SAA7134_BOARD_ECS_TVP3XP:
 206         case SAA7134_BOARD_ECS_TVP3XP_4CB5:
 207                 ir_codes     = ir_codes_eztv;
 208                 mask_keycode = 0x00017c;
 209                 mask_keyup   = 0x000002;
 210                 polling      = 50; // ms
 211                 break;
 212         case SAA7134_BOARD_KWORLD_XPERT:
 213         case SAA7134_BOARD_AVACSSMARTTV:
 214                 ir_codes     = ir_codes_pixelview;
 215                 mask_keycode = 0x00001F;
 216                 mask_keyup   = 0x000020;
 217                 polling      = 50; // ms
 218                 break;
 219         case SAA7134_BOARD_MD2819:
 220         case SAA7134_BOARD_KWORLD_VSTREAM_XPERT:
 221         case SAA7134_BOARD_AVERMEDIA_305:
 222         case SAA7134_BOARD_AVERMEDIA_307:
 223         case SAA7134_BOARD_AVERMEDIA_STUDIO_305:
 224         case SAA7134_BOARD_AVERMEDIA_STUDIO_307:
 225         case SAA7134_BOARD_AVERMEDIA_STUDIO_507:
 226         case SAA7134_BOARD_AVERMEDIA_GO_007_FM:
 227                 ir_codes     = ir_codes_avermedia;
 228                 mask_keycode = 0x0007C8;
 229                 mask_keydown = 0x000010;
 230                 polling      = 50; // ms
 231                 /* Set GPIO pin2 to high to enable the IR controller */
 232                 saa_setb(SAA7134_GPIO_GPMODE0, 0x4);
 233                 saa_setb(SAA7134_GPIO_GPSTATUS0, 0x4);
 234                 break;
 235         case SAA7134_BOARD_AVERMEDIA_777:
 236         case SAA7134_BOARD_AVERMEDIA_A16AR:
 237                 ir_codes     = ir_codes_avermedia;
 238                 mask_keycode = 0x02F200;
 239                 mask_keydown = 0x000400;
 240                 polling      = 50; // ms
 241                 /* Without this we won't receive key up events */
 242                 saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
 243                 saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
 244                 break;
 245         case SAA7134_BOARD_KWORLD_TERMINATOR:
 246                 ir_codes     = ir_codes_pixelview;
 247                 mask_keycode = 0x00001f;
 248                 mask_keyup   = 0x000060;
 249                 polling      = 50; // ms
 250                 break;
 251         case SAA7134_BOARD_MANLI_MTV001:
 252         case SAA7134_BOARD_MANLI_MTV002:
 253         case SAA7134_BOARD_BEHOLD_409FM:
 254                 ir_codes     = ir_codes_manli;
 255                 mask_keycode = 0x001f00;
 256                 mask_keyup   = 0x004000;
 257                 polling      = 50; // ms
 258                 break;
 259         case SAA7134_BOARD_SEDNA_PC_TV_CARDBUS:
 260                 ir_codes     = ir_codes_pctv_sedna;
 261                 mask_keycode = 0x001f00;
 262                 mask_keyup   = 0x004000;
 263                 polling      = 50; // ms
 264                 break;
 265         case SAA7134_BOARD_GOTVIEW_7135:
 266                 ir_codes     = ir_codes_gotview7135;
 267                 mask_keycode = 0x0003EC;
 268                 mask_keyup   = 0x008000;
 269                 mask_keydown = 0x000010;
 270                 polling      = 50; // ms
 271                 break;
 272         case SAA7134_BOARD_VIDEOMATE_TV_PVR:
 273         case SAA7134_BOARD_VIDEOMATE_GOLD_PLUS:
 274         case SAA7134_BOARD_VIDEOMATE_TV_GOLD_PLUSII:
 275                 ir_codes     = ir_codes_videomate_tv_pvr;
 276                 mask_keycode = 0x00003F;
 277                 mask_keyup   = 0x400000;
 278                 polling      = 50; // ms
 279                 break;
 280         case SAA7134_BOARD_PROTEUS_2309:
 281                 ir_codes     = ir_codes_proteus_2309;
 282                 mask_keycode = 0x00007F;
 283                 mask_keyup   = 0x000080;
 284                 polling      = 50; // ms
 285                 break;
 286         case SAA7134_BOARD_VIDEOMATE_DVBT_300:
 287         case SAA7134_BOARD_VIDEOMATE_DVBT_200:
 288                 ir_codes     = ir_codes_videomate_tv_pvr;
 289                 mask_keycode = 0x003F00;
 290                 mask_keyup   = 0x040000;
 291                 break;
 292         case SAA7134_BOARD_FLYDVBT_LR301:
 293         case SAA7134_BOARD_FLYDVBTDUO:
 294                 ir_codes     = ir_codes_flydvb;
 295                 mask_keycode = 0x0001F00;
 296                 mask_keydown = 0x0040000;
 297                 break;
 298         }
 299         if (NULL == ir_codes) {
 300                 printk("%s: Oops: IR config error [card=%d]\n",
 301                        dev->name, dev->board);
 302                 return -ENODEV;
 303         }
 304
 305         ir = kzalloc(sizeof(*ir), GFP_KERNEL);
 306         input_dev = input_allocate_device();
 307         if (!ir || !input_dev) {
 308                 err = -ENOMEM;
 309                 goto err_out_free;
 310         }
 311
 312         ir->dev = input_dev;
 313
 314         /* init hardware-specific stuff */
 315         ir->mask_keycode = mask_keycode;
 316         ir->mask_keydown = mask_keydown;
 317         ir->mask_keyup   = mask_keyup;
 318         ir->polling      = polling;
 319
 320         /* init input device */
 321         snprintf(ir->name, sizeof(ir->name), "saa7134 IR (%s)",
 322                  saa7134_boards[dev->board].name);
 323         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
 324                  pci_name(dev->pci));
 325
 326         ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
 327         input_dev->name = ir->name;
 328         input_dev->phys = ir->phys;
 329         input_dev->id.bustype = BUS_PCI;
 330         input_dev->id.version = 1;
 331         if (dev->pci->subsystem_vendor) {
 332                 input_dev->id.vendor  = dev->pci->subsystem_vendor;
 333                 input_dev->id.product = dev->pci->subsystem_device;
 334         } else {
 335                 input_dev->id.vendor  = dev->pci->vendor;
 336                 input_dev->id.product = dev->pci->device;
 337         }
 338         input_dev->cdev.dev = &dev->pci->dev;
 339
 340         dev->remote = ir;
 341         saa7134_ir_start(dev, ir);
 342
 343         err = input_register_device(ir->dev);
 344         if (err)
 345                 goto err_out_stop;
 346
 347         return 0;
 348
 349  err_out_stop:
 350         saa7134_ir_stop(dev);
 351         dev->remote = NULL;
 352  err_out_free:
 353         input_free_device(input_dev);
 354         kfree(ir);
 355         return err;
 356 }
 357
 358 void saa7134_input_fini(struct saa7134_dev *dev)
 359 {
 360         if (NULL == dev->remote)
 361                 return;
 362
 363         saa7134_ir_stop(dev);
 364         input_unregister_device(dev->remote->dev);
 365         kfree(dev->remote);
 366         dev->remote = NULL;
 367 }
 368
 369 void saa7134_set_i2c_ir(struct saa7134_dev *dev, struct IR_i2c *ir)
 370 {
 371         if (disable_ir) {
 372                 dprintk("Found supported i2c remote, but IR has been disabled\n");
 373                 ir->get_key=NULL;
 374                 return;
 375         }
 376
 377         switch (dev->board) {
 378         case SAA7134_BOARD_PINNACLE_PCTV_110i:
 379         case SAA7134_BOARD_PINNACLE_PCTV_310i:
 380                 snprintf(ir->c.name, sizeof(ir->c.name), "Pinnacle PCTV");
 381                 if (pinnacle_remote == 0) {
 382                         ir->get_key   = get_key_pinnacle_color;
 383                         ir->ir_codes = ir_codes_pinnacle_color;
 384                 } else {
 385                         ir->get_key   = get_key_pinnacle_grey;
 386                         ir->ir_codes = ir_codes_pinnacle_grey;
 387                 }
 388                 break;
 389         case SAA7134_BOARD_UPMOST_PURPLE_TV:
 390                 snprintf(ir->c.name, sizeof(ir->c.name), "Purple TV");
 391                 ir->get_key   = get_key_purpletv;
 392                 ir->ir_codes  = ir_codes_purpletv;
 393                 break;
 394         case SAA7134_BOARD_HAUPPAUGE_HVR1110:
 395                 snprintf(ir->c.name, sizeof(ir->c.name), "HVR 1110");
 396                 ir->get_key   = get_key_hvr1110;
 397                 ir->ir_codes  = ir_codes_hauppauge_new;
 398                 break;
 399         default:
 400                 dprintk("Shouldn't get here: Unknown board %x for I2C IR?\n",dev->board);
 401                 break;
 402         }
 403
 404 }
 405 /* ----------------------------------------------------------------------
 406  * Local variables:
 407  * c-basic-offset: 8
 408  * End:
 409  */