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
  23 void 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]) * 1000, /* Convert to ns */
  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
  39 int 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 = 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
  92 void sms_ir_exit(struct smscore_device_t *coredev)
  93 {
  94         rc_unregister_device(coredev->ir.dev);
  95
  96         pr_debug("\n");
  97 }