release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/media/dvb/siano/smsir.c

   1 /****************************************************************
   2
   3  Siano Mobile Silicon, Inc.
   4  MDTV receiver kernel modules.
   5  Copyright (C) 2006-2009, Uri Shkolnik
   6
   7  Copyright (c) 2010 - Mauro Carvalho Chehab
   8         - Ported the driver to use rc-core
   9         - IR raw event decoding is now done at rc-core
  10         - Code almost re-written
  11
  12  This program is free software: you can redistribute it and/or modify
  13  it under the terms of the GNU General Public License as published by
  14  the Free Software Foundation, either version 2 of the License, or
  15  (at your option) any later version.
  16
  17  This program is distributed in the hope that it will be useful,
  18  but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  GNU General Public License for more details.
  21
  22  You should have received a copy of the GNU General Public License
  23  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24
  25  ****************************************************************/
  26
  27
  28 #include <linux/types.h>
  29 #include <linux/input.h>
  30
  31 #include "smscoreapi.h"
  32 #include "smsir.h"
  33 #include "sms-cards.h"
  34
  35 #define MODULE_NAME "smsmdtv"
  36
  37 void sms_ir_event(struct smscore_device_t *coredev, const char *buf, int len)
  38 {
  39         int i;
  40         const s32 *samples = (const void *)buf;
  41
  42         for (i = 0; i < len >> 2; i++) {
  43                 struct ir_raw_event ev;
  44
  45                 ev.duration = abs(samples[i]) * 1000; /* Convert to ns */
  46                 ev.pulse = (samples[i] > 0) ? false : true;
  47
  48                 ir_raw_event_store(coredev->ir.input_dev, &ev);
  49         }
  50         ir_raw_event_handle(coredev->ir.input_dev);
  51 }
  52
  53 int sms_ir_init(struct smscore_device_t *coredev)
  54 {
  55         struct input_dev *input_dev;
  56         int board_id = smscore_get_board_id(coredev);
  57
  58         sms_log("Allocating input device");
  59         input_dev = input_allocate_device();
  60         if (!input_dev) {
  61                 sms_err("Not enough memory");
  62                 return -ENOMEM;
  63         }
  64
  65         coredev->ir.input_dev = input_dev;
  66
  67         coredev->ir.controller = 0;     /* Todo: vega/nova SPI number */
  68         coredev->ir.timeout = IR_DEFAULT_TIMEOUT;
  69         sms_log("IR port %d, timeout %d ms",
  70                         coredev->ir.controller, coredev->ir.timeout);
  71
  72         snprintf(coredev->ir.name, sizeof(coredev->ir.name),
  73                  "SMS IR (%s)", sms_get_board(board_id)->name);
  74
  75         strlcpy(coredev->ir.phys, coredev->devpath, sizeof(coredev->ir.phys));
  76         strlcat(coredev->ir.phys, "/ir0", sizeof(coredev->ir.phys));
  77
  78         input_dev->name = coredev->ir.name;
  79         input_dev->phys = coredev->ir.phys;
  80         input_dev->dev.parent = coredev->device;
  81
  82
  83         coredev->ir.props.priv = coredev;
  84         coredev->ir.props.driver_type = RC_DRIVER_IR_RAW;
  85         coredev->ir.props.allowed_protos = IR_TYPE_ALL;
  86
  87         sms_log("Input device (IR) %s is set for key events", input_dev->name);
  88
  89         if (ir_input_register(input_dev, sms_get_board(board_id)->rc_codes,
  90                               &coredev->ir.props, MODULE_NAME)) {
  91                 sms_err("Failed to register device");
  92                 input_free_device(input_dev);
  93                 return -EACCES;
  94         }
  95
  96         return 0;
  97 }
  98
  99 void sms_ir_exit(struct smscore_device_t *coredev)
 100 {
 101         if (coredev->ir.input_dev)
 102                 ir_input_unregister(coredev->ir.input_dev);
 103
 104         sms_log("");
 105 }