LXR linux/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
  38void 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
  54int 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();
  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->driver_type = RC_DRIVER_IR_RAW;
  90        dev->allowed_protocols = RC_BIT_ALL;
  91        dev->map_name = sms_get_board(board_id)->rc_codes;
  92        dev->driver_name = MODULE_NAME;
  93
  94        pr_debug("Input device (IR) %s is set for key events\n",
  95                 dev->input_name);
  96
  97        err = rc_register_device(dev);
  98        if (err < 0) {
  99                pr_err("Failed to register device\n");
 100                rc_free_device(dev);
 101                return err;
 102        }
 103
 104        coredev->ir.dev = dev;
 105        return 0;
 106}
 107
 108void sms_ir_exit(struct smscore_device_t *coredev)
 109{
 110        rc_unregister_device(coredev->ir.dev);
 111
 112        pr_debug("\n");
 113}
 114