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 <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
  37void 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
  53int 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        dev->allowed_protos = 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
 108void 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}
 115