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