LXR linux/drivers/media/common/siano/smsir.c

   1// SPDX-License-Identifier: GPL-2.0+
   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
  13#include "smscoreapi.h"
  14
  15#include <linux/types.h>
  16#include <linux/input.h>
  17
  18#include "smsir.h"
  19#include "sms-cards.h"
  20
  21#define MODULE_NAME "smsmdtv"
  22
  23void sms_ir_event(struct smscore_device_t *coredev, const char *buf, int len)
  24{
  25        int i;
  26        const s32 *samples = (const void *)buf;
  27
  28        for (i = 0; i < len >> 2; i++) {
  29                struct ir_raw_event ev = {
  30                        .duration = abs(samples[i]),
  31                        .pulse = (samples[i] > 0) ? false : true
  32                };
  33
  34                ir_raw_event_store(coredev->ir.dev, &ev);
  35        }
  36        ir_raw_event_handle(coredev->ir.dev);
  37}
  38
  39int sms_ir_init(struct smscore_device_t *coredev)
  40{
  41        int err;
  42        int board_id = smscore_get_board_id(coredev);
  43        struct rc_dev *dev;
  44
  45        pr_debug("Allocating rc device\n");
  46        dev = rc_allocate_device(RC_DRIVER_IR_RAW);
  47        if (!dev)
  48                return -ENOMEM;
  49
  50        coredev->ir.controller = 0;     /* Todo: vega/nova SPI number */
  51        coredev->ir.timeout = US_TO_NS(IR_DEFAULT_TIMEOUT);
  52        pr_debug("IR port %d, timeout %d ms\n",
  53                        coredev->ir.controller, coredev->ir.timeout);
  54
  55        snprintf(coredev->ir.name, sizeof(coredev->ir.name),
  56                 "SMS IR (%s)", sms_get_board(board_id)->name);
  57
  58        strscpy(coredev->ir.phys, coredev->devpath, sizeof(coredev->ir.phys));
  59        strlcat(coredev->ir.phys, "/ir0", sizeof(coredev->ir.phys));
  60
  61        dev->device_name = coredev->ir.name;
  62        dev->input_phys = coredev->ir.phys;
  63        dev->dev.parent = coredev->device;
  64
  65#if 0
  66        /* TODO: properly initialize the parameters below */
  67        dev->input_id.bustype = BUS_USB;
  68        dev->input_id.version = 1;
  69        dev->input_id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
  70        dev->input_id.product = le16_to_cpu(dev->udev->descriptor.idProduct);
  71#endif
  72
  73        dev->priv = coredev;
  74        dev->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
  75        dev->map_name = sms_get_board(board_id)->rc_codes;
  76        dev->driver_name = MODULE_NAME;
  77
  78        pr_debug("Input device (IR) %s is set for key events\n",
  79                 dev->device_name);
  80
  81        err = rc_register_device(dev);
  82        if (err < 0) {
  83                pr_err("Failed to register device\n");
  84                rc_free_device(dev);
  85                return err;
  86        }
  87
  88        coredev->ir.dev = dev;
  89        return 0;
  90}
  91
  92void sms_ir_exit(struct smscore_device_t *coredev)
  93{
  94        rc_unregister_device(coredev->ir.dev);
  95
  96        pr_debug("\n");
  97}
  98