drivers/media/common/siano/smsendian.c

   1 /****************************************************************
   2
   3  Siano Mobile Silicon, Inc.
   4  MDTV receiver kernel modules.
   5  Copyright (C) 2006-2009, Uri Shkolnik
   6
   7  This program is free software: you can redistribute it and/or modify
   8  it under the terms of the GNU General Public License as published by
   9  the Free Software Foundation, either version 2 of the License, or
  10  (at your option) any later version.
  11
  12  This program is distributed in the hope that it will be useful,
  13  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  GNU General Public License for more details.
  16
  17  You should have received a copy of the GNU General Public License
  18  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20  ****************************************************************/
  21
  22 #include <linux/export.h>
  23 #include <asm/byteorder.h>
  24
  25 #include "smsendian.h"
  26 #include "smscoreapi.h"
  27
  28 void smsendian_handle_tx_message(void *buffer)
  29 {
  30 #ifdef __BIG_ENDIAN
  31         struct sms_msg_data *msg = (struct sms_msg_data *)buffer;
  32         int i;
  33         int msg_words;
  34
  35         switch (msg->x_msg_header.msg_type) {
  36         case MSG_SMS_DATA_DOWNLOAD_REQ:
  37         {
  38                 msg->msg_data[0] = le32_to_cpu(msg->msg_data[0]);
  39                 break;
  40         }
  41
  42         default:
  43                 msg_words = (msg->x_msg_header.msg_length -
  44                                 sizeof(struct sms_msg_hdr))/4;
  45
  46                 for (i = 0; i < msg_words; i++)
  47                         msg->msg_data[i] = le32_to_cpu(msg->msg_data[i]);
  48
  49                 break;
  50         }
  51 #endif /* __BIG_ENDIAN */
  52 }
  53 EXPORT_SYMBOL_GPL(smsendian_handle_tx_message);
  54
  55 void smsendian_handle_rx_message(void *buffer)
  56 {
  57 #ifdef __BIG_ENDIAN
  58         struct sms_msg_data *msg = (struct sms_msg_data *)buffer;
  59         int i;
  60         int msg_words;
  61
  62         switch (msg->x_msg_header.msg_type) {
  63         case MSG_SMS_GET_VERSION_EX_RES:
  64         {
  65                 struct sms_version_res *ver =
  66                         (struct sms_version_res *) msg;
  67                 ver->chip_model = le16_to_cpu(ver->chip_model);
  68                 break;
  69         }
  70
  71         case MSG_SMS_DVBT_BDA_DATA:
  72         case MSG_SMS_DAB_CHANNEL:
  73         case MSG_SMS_DATA_MSG:
  74         {
  75                 break;
  76         }
  77
  78         default:
  79         {
  80                 msg_words = (msg->x_msg_header.msg_length -
  81                                 sizeof(struct sms_msg_hdr))/4;
  82
  83                 for (i = 0; i < msg_words; i++)
  84                         msg->msg_data[i] = le32_to_cpu(msg->msg_data[i]);
  85
  86                 break;
  87         }
  88         }
  89 #endif /* __BIG_ENDIAN */
  90 }
  91 EXPORT_SYMBOL_GPL(smsendian_handle_rx_message);
  92
  93 void smsendian_handle_message_header(void *msg)
  94 {
  95 #ifdef __BIG_ENDIAN
  96         struct sms_msg_hdr *phdr = (struct sms_msg_hdr *)msg;
  97
  98         phdr->msg_type = le16_to_cpu(phdr->msg_type);
  99         phdr->msg_length = le16_to_cpu(phdr->msg_length);
 100         phdr->msg_flags = le16_to_cpu(phdr->msg_flags);
 101 #endif /* __BIG_ENDIAN */
 102 }
 103 EXPORT_SYMBOL_GPL(smsendian_handle_message_header);