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