common/siano/smsendian.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /****************************************************************
0003
0004  Siano Mobile Silicon, Inc.
0005  MDTV receiver kernel modules.
0006  Copyright (C) 2006-2009, Uri Shkolnik
0007
0008
0009  ****************************************************************/
0010
0011 #include <linux/export.h>
0012 #include <asm/byteorder.h>
0013
0014 #include "smsendian.h"
0015 #include "smscoreapi.h"
0016
0017 void smsendian_handle_tx_message(void *buffer)
0018 {
0019 #ifdef __BIG_ENDIAN
0020     struct sms_msg_data *msg = (struct sms_msg_data *)buffer;
0021     int i;
0022     int msg_words;
0023
0024     switch (msg->x_msg_header.msg_type) {
0025     case MSG_SMS_DATA_DOWNLOAD_REQ:
0026     {
0027         msg->msg_data[0] = le32_to_cpu((__force __le32)(msg->msg_data[0]));
0028         break;
0029     }
0030
0031     default:
0032         msg_words = (msg->x_msg_header.msg_length -
0033                 sizeof(struct sms_msg_hdr))/4;
0034
0035         for (i = 0; i < msg_words; i++)
0036             msg->msg_data[i] = le32_to_cpu((__force __le32)msg->msg_data[i]);
0037
0038         break;
0039     }
0040 #endif /* __BIG_ENDIAN */
0041 }
0042 EXPORT_SYMBOL_GPL(smsendian_handle_tx_message);
0043
0044 void smsendian_handle_rx_message(void *buffer)
0045 {
0046 #ifdef __BIG_ENDIAN
0047     struct sms_msg_data *msg = (struct sms_msg_data *)buffer;
0048     int i;
0049     int msg_words;
0050
0051     switch (msg->x_msg_header.msg_type) {
0052     case MSG_SMS_GET_VERSION_EX_RES:
0053     {
0054         struct sms_version_res *ver =
0055             (struct sms_version_res *) msg;
0056         ver->chip_model = le16_to_cpu((__force __le16)ver->chip_model);
0057         break;
0058     }
0059
0060     case MSG_SMS_DVBT_BDA_DATA:
0061     case MSG_SMS_DAB_CHANNEL:
0062     case MSG_SMS_DATA_MSG:
0063     {
0064         break;
0065     }
0066
0067     default:
0068     {
0069         msg_words = (msg->x_msg_header.msg_length -
0070                 sizeof(struct sms_msg_hdr))/4;
0071
0072         for (i = 0; i < msg_words; i++)
0073             msg->msg_data[i] = le32_to_cpu((__force __le32)msg->msg_data[i]);
0074
0075         break;
0076     }
0077     }
0078 #endif /* __BIG_ENDIAN */
0079 }
0080 EXPORT_SYMBOL_GPL(smsendian_handle_rx_message);
0081
0082 void smsendian_handle_message_header(void *msg)
0083 {
0084 #ifdef __BIG_ENDIAN
0085     struct sms_msg_hdr *phdr = (struct sms_msg_hdr *)msg;
0086
0087     phdr->msg_type = le16_to_cpu((__force __le16)phdr->msg_type);
0088     phdr->msg_length = le16_to_cpu((__force __le16)phdr->msg_length);
0089     phdr->msg_flags = le16_to_cpu((__force __le16)phdr->msg_flags);
0090 #endif /* __BIG_ENDIAN */
0091 }
0092 EXPORT_SYMBOL_GPL(smsendian_handle_message_header);