drivers/media/common/siano/smsendian.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /****************************************************************
   3
   4  Siano Mobile Silicon, Inc.
   5  MDTV receiver kernel modules.
   6  Copyright (C) 2006-2009, Uri Shkolnik
   7
   8
   9  ****************************************************************/
  10
  11 #include <linux/export.h>
  12 #include <asm/byteorder.h>
  13
  14 #include "smsendian.h"
  15 #include "smscoreapi.h"
  16
  17 void smsendian_handle_tx_message(void *buffer)
  18 {
  19 #ifdef __BIG_ENDIAN
  20         struct sms_msg_data *msg = (struct sms_msg_data *)buffer;
  21         int i;
  22         int msg_words;
  23
  24         switch (msg->x_msg_header.msg_type) {
  25         case MSG_SMS_DATA_DOWNLOAD_REQ:
  26         {
  27                 msg->msg_data[0] = le32_to_cpu((__force __le32)(msg->msg_data[0]));
  28                 break;
  29         }
  30
  31         default:
  32                 msg_words = (msg->x_msg_header.msg_length -
  33                                 sizeof(struct sms_msg_hdr))/4;
  34
  35                 for (i = 0; i < msg_words; i++)
  36                         msg->msg_data[i] = le32_to_cpu((__force __le32)msg->msg_data[i]);
  37
  38                 break;
  39         }
  40 #endif /* __BIG_ENDIAN */
  41 }
  42 EXPORT_SYMBOL_GPL(smsendian_handle_tx_message);
  43
  44 void smsendian_handle_rx_message(void *buffer)
  45 {
  46 #ifdef __BIG_ENDIAN
  47         struct sms_msg_data *msg = (struct sms_msg_data *)buffer;
  48         int i;
  49         int msg_words;
  50
  51         switch (msg->x_msg_header.msg_type) {
  52         case MSG_SMS_GET_VERSION_EX_RES:
  53         {
  54                 struct sms_version_res *ver =
  55                         (struct sms_version_res *) msg;
  56                 ver->chip_model = le16_to_cpu((__force __le16)ver->chip_model);
  57                 break;
  58         }
  59
  60         case MSG_SMS_DVBT_BDA_DATA:
  61         case MSG_SMS_DAB_CHANNEL:
  62         case MSG_SMS_DATA_MSG:
  63         {
  64                 break;
  65         }
  66
  67         default:
  68         {
  69                 msg_words = (msg->x_msg_header.msg_length -
  70                                 sizeof(struct sms_msg_hdr))/4;
  71
  72                 for (i = 0; i < msg_words; i++)
  73                         msg->msg_data[i] = le32_to_cpu((__force __le32)msg->msg_data[i]);
  74
  75                 break;
  76         }
  77         }
  78 #endif /* __BIG_ENDIAN */
  79 }
  80 EXPORT_SYMBOL_GPL(smsendian_handle_rx_message);
  81
  82 void smsendian_handle_message_header(void *msg)
  83 {
  84 #ifdef __BIG_ENDIAN
  85         struct sms_msg_hdr *phdr = (struct sms_msg_hdr *)msg;
  86
  87         phdr->msg_type = le16_to_cpu((__force __le16)phdr->msg_type);
  88         phdr->msg_length = le16_to_cpu((__force __le16)phdr->msg_length);
  89         phdr->msg_flags = le16_to_cpu((__force __le16)phdr->msg_flags);
  90 #endif /* __BIG_ENDIAN */
  91 }
  92 EXPORT_SYMBOL_GPL(smsendian_handle_message_header);