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 <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                 DEFINE_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.dev, &ev);
  49         }
  50         ir_raw_event_handle(coredev->ir.dev);
  51 }
  52
  53 int sms_ir_init(struct smscore_device_t *coredev)
  54 {
  55         int err;
  56         int board_id = smscore_get_board_id(coredev);
  57         struct rc_dev *dev;
  58
  59         sms_log("Allocating rc device");
  60         dev = rc_allocate_device();
  61         if (!dev) {
  62                 sms_err("Not enough memory");
  63                 return -ENOMEM;
  64         }
  65
  66         coredev->ir.controller = 0;     /* Todo: vega/nova SPI number */
  67         coredev->ir.timeout = IR_DEFAULT_TIMEOUT;
  68         sms_log("IR port %d, timeout %d ms",
  69                         coredev->ir.controller, coredev->ir.timeout);
  70
  71         snprintf(coredev->ir.name, sizeof(coredev->ir.name),
  72                  "SMS IR (%s)", sms_get_board(board_id)->name);
  73
  74         strlcpy(coredev->ir.phys, coredev->devpath, sizeof(coredev->ir.phys));
  75         strlcat(coredev->ir.phys, "/ir0", sizeof(coredev->ir.phys));
  76
  77         dev->input_name = coredev->ir.name;
  78         dev->input_phys = coredev->ir.phys;
  79         dev->dev.parent = coredev->device;
  80
  81 #if 0
  82         /* TODO: properly initialize the parameters bellow */
  83         dev->input_id.bustype = BUS_USB;
  84         dev->input_id.version = 1;
  85         dev->input_id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
  86         dev->input_id.product = le16_to_cpu(dev->udev->descriptor.idProduct);
  87 #endif
  88
  89         dev->priv = coredev;
  90         dev->driver_type = RC_DRIVER_IR_RAW;
  91         rc_set_allowed_protocols(dev, RC_BIT_ALL);
  92         dev->map_name = sms_get_board(board_id)->rc_codes;
  93         dev->driver_name = MODULE_NAME;
  94
  95         sms_log("Input device (IR) %s is set for key events", dev->input_name);
  96
  97         err = rc_register_device(dev);
  98         if (err < 0) {
  99                 sms_err("Failed to register device");
 100                 rc_free_device(dev);
 101                 return err;
 102         }
 103
 104         coredev->ir.dev = dev;
 105         return 0;
 106 }
 107
 108 void sms_ir_exit(struct smscore_device_t *coredev)
 109 {
 110         if (coredev->ir.dev)
 111                 rc_unregister_device(coredev->ir.dev);
 112
 113         sms_log("");
 114 }