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 = buffer;
  21         int i;
  22         int msg_words;
  23         u32 *msg_data = &msg->msg_data;
  24
  25         switch (msg->x_msg_header.msg_type) {
  26         case MSG_SMS_DATA_DOWNLOAD_REQ:
  27         {
  28                 msg->msg_data = le32_to_cpu((__force __le32)(msg->msg_data));
  29                 break;
  30         }
  31
  32         default:
  33                 msg_words = (msg->x_msg_header.msg_length -
  34                                 sizeof(struct sms_msg_hdr))/4;
  35
  36                 for (i = 0; i < msg_words; i++)
  37                         msg_data[i] = le32_to_cpu((__force __le32)msg_data[i]);
  38
  39                 break;
  40         }
  41 #endif /* __BIG_ENDIAN */
  42 }
  43 EXPORT_SYMBOL_GPL(smsendian_handle_tx_message);
  44
  45 void smsendian_handle_rx_message(void *buffer)
  46 {
  47 #ifdef __BIG_ENDIAN
  48         struct sms_msg_data *msg = (struct sms_msg_data *)buffer;
  49         int i;
  50         int msg_words;
  51
  52         switch (msg->x_msg_header.msg_type) {
  53         case MSG_SMS_GET_VERSION_EX_RES:
  54         {
  55                 struct sms_version_res *ver =
  56                         (struct sms_version_res *) msg;
  57                 ver->chip_model = le16_to_cpu((__force __le16)ver->chip_model);
  58                 break;
  59         }
  60
  61         case MSG_SMS_DVBT_BDA_DATA:
  62         case MSG_SMS_DAB_CHANNEL:
  63         case MSG_SMS_DATA_MSG:
  64         {
  65                 break;
  66         }
  67
  68         default:
  69         {
  70                 u32 *msg_data = &msg->msg_data;
  71                 msg_words = (msg->x_msg_header.msg_length -
  72                                 sizeof(struct sms_msg_hdr))/4;
  73
  74                 for (i = 0; i < msg_words; i++)
  75                         msg_data[i] = le32_to_cpu((__force __le32)msg_data[i]);
  76
  77                 break;
  78         }
  79         }
  80 #endif /* __BIG_ENDIAN */
  81 }
  82 EXPORT_SYMBOL_GPL(smsendian_handle_rx_message);
  83
  84 void smsendian_handle_message_header(void *msg)
  85 {
  86 #ifdef __BIG_ENDIAN
  87         struct sms_msg_hdr *phdr = (struct sms_msg_hdr *)msg;
  88
  89         phdr->msg_type = le16_to_cpu((__force __le16)phdr->msg_type);
  90         phdr->msg_length = le16_to_cpu((__force __le16)phdr->msg_length);
  91         phdr->msg_flags = le16_to_cpu((__force __le16)phdr->msg_flags);
  92 #endif /* __BIG_ENDIAN */
  93 }
  94 EXPORT_SYMBOL_GPL(smsendian_handle_message_header);