drivers/media/common/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 "smscoreapi.h"
  29
  30 #include <linux/types.h>
  31 #include <linux/input.h>
  32
  33 #include "smsir.h"
  34 #include "sms-cards.h"
  35
  36 #define MODULE_NAME "smsmdtv"
  37
  38 void sms_ir_event(struct smscore_device_t *coredev, const char *buf, int len)
  39 {
  40         int i;
  41         const s32 *samples = (const void *)buf;
  42
  43         for (i = 0; i < len >> 2; i++) {
  44                 DEFINE_IR_RAW_EVENT(ev);
  45
  46                 ev.duration = abs(samples[i]) * 1000; /* Convert to ns */
  47                 ev.pulse = (samples[i] > 0) ? false : true;
  48
  49                 ir_raw_event_store(coredev->ir.dev, &ev);
  50         }
  51         ir_raw_event_handle(coredev->ir.dev);
  52 }
  53
  54 int sms_ir_init(struct smscore_device_t *coredev)
  55 {
  56         int err;
  57         int board_id = smscore_get_board_id(coredev);
  58         struct rc_dev *dev;
  59
  60         pr_debug("Allocating rc device\n");
  61         dev = rc_allocate_device(RC_DRIVER_IR_RAW);
  62         if (!dev)
  63                 return -ENOMEM;
  64
  65         coredev->ir.controller = 0;     /* Todo: vega/nova SPI number */
  66         coredev->ir.timeout = IR_DEFAULT_TIMEOUT;
  67         pr_debug("IR port %d, timeout %d ms\n",
  68                         coredev->ir.controller, coredev->ir.timeout);
  69
  70         snprintf(coredev->ir.name, sizeof(coredev->ir.name),
  71                  "SMS IR (%s)", sms_get_board(board_id)->name);
  72
  73         strlcpy(coredev->ir.phys, coredev->devpath, sizeof(coredev->ir.phys));
  74         strlcat(coredev->ir.phys, "/ir0", sizeof(coredev->ir.phys));
  75
  76         dev->input_name = coredev->ir.name;
  77         dev->input_phys = coredev->ir.phys;
  78         dev->dev.parent = coredev->device;
  79
  80 #if 0
  81         /* TODO: properly initialize the parameters below */
  82         dev->input_id.bustype = BUS_USB;
  83         dev->input_id.version = 1;
  84         dev->input_id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
  85         dev->input_id.product = le16_to_cpu(dev->udev->descriptor.idProduct);
  86 #endif
  87
  88         dev->priv = coredev;
  89         dev->allowed_protocols = RC_BIT_ALL_IR_DECODER;
  90         dev->map_name = sms_get_board(board_id)->rc_codes;
  91         dev->driver_name = MODULE_NAME;
  92
  93         pr_debug("Input device (IR) %s is set for key events\n",
  94                  dev->input_name);
  95
  96         err = rc_register_device(dev);
  97         if (err < 0) {
  98                 pr_err("Failed to register device\n");
  99                 rc_free_device(dev);
 100                 return err;
 101         }
 102
 103         coredev->ir.dev = dev;
 104         return 0;
 105 }
 106
 107 void sms_ir_exit(struct smscore_device_t *coredev)
 108 {
 109         rc_unregister_device(coredev->ir.dev);
 110
 111         pr_debug("\n");
 112 }