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      1 /******************************************************************************
      2  *
      3  *  Copyright (C) 2009-2012 Broadcom Corporation
      4  *
      5  *  Licensed under the Apache License, Version 2.0 (the "License");
      6  *  you may not use this file except in compliance with the License.
      7  *  You may obtain a copy of the License at:
      8  *
      9  *  http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  *  Unless required by applicable law or agreed to in writing, software
     12  *  distributed under the License is distributed on an "AS IS" BASIS,
     13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  *  See the License for the specific language governing permissions and
     15  *  limitations under the License.
     16  *
     17  ******************************************************************************/
     18 
     19 /******************************************************************************
     20  *
     21  *  Filename:      conf.c
     22  *
     23  *  Description:   Contains functions to conduct run-time module configuration
     24  *                 based on entries present in the .conf file
     25  *
     26  ******************************************************************************/
     27 
     28 #define LOG_TAG "bt_vnd_conf"
     29 
     30 #include <utils/Log.h>
     31 #include <string.h>
     32 #include "bt_vendor_brcm.h"
     33 
     34 /******************************************************************************
     35 **  Externs
     36 ******************************************************************************/
     37 int userial_set_port(char *p_conf_name, char *p_conf_value, int param);
     38 int hw_set_patch_file_path(char *p_conf_name, char *p_conf_value, int param);
     39 int hw_set_patch_file_name(char *p_conf_name, char *p_conf_value, int param);
     40 #if (VENDOR_LIB_RUNTIME_TUNING_ENABLED == TRUE)
     41 int hw_set_patch_settlement_delay(char *p_conf_name, char *p_conf_value, int param);
     42 #endif
     43 
     44 
     45 /******************************************************************************
     46 **  Local type definitions
     47 ******************************************************************************/
     48 
     49 #define CONF_COMMENT '#'
     50 #define CONF_DELIMITERS " =\n\r\t"
     51 #define CONF_VALUES_DELIMITERS "=\n\r\t"
     52 #define CONF_MAX_LINE_LEN 255
     53 
     54 typedef int (conf_action_t)(char *p_conf_name, char *p_conf_value, int param);
     55 
     56 typedef struct {
     57     const char *conf_entry;
     58     conf_action_t *p_action;
     59     int param;
     60 } conf_entry_t;
     61 
     62 /******************************************************************************
     63 **  Static variables
     64 ******************************************************************************/
     65 
     66 /*
     67  * Current supported entries and corresponding action functions
     68  */
     69 static const conf_entry_t conf_table[] = {
     70     {"UartPort", userial_set_port, 0},
     71     {"FwPatchFilePath", hw_set_patch_file_path, 0},
     72     {"FwPatchFileName", hw_set_patch_file_name, 0},
     73 #if (VENDOR_LIB_RUNTIME_TUNING_ENABLED == TRUE)
     74     {"FwPatchSettlementDelay", hw_set_patch_settlement_delay, 0},
     75 #endif
     76     {(const char *) NULL, NULL, 0}
     77 };
     78 
     79 /*****************************************************************************
     80 **   CONF INTERFACE FUNCTIONS
     81 *****************************************************************************/
     82 
     83 /*******************************************************************************
     84 **
     85 ** Function        vnd_load_conf
     86 **
     87 ** Description     Read conf entry from p_path file one by one and call
     88 **                 the corresponding config function
     89 **
     90 ** Returns         None
     91 **
     92 *******************************************************************************/
     93 void vnd_load_conf(const char *p_path)
     94 {
     95     FILE    *p_file;
     96     char    *p_name;
     97     char    *p_value;
     98     conf_entry_t    *p_entry;
     99     char    line[CONF_MAX_LINE_LEN+1]; /* add 1 for \0 char */
    100 
    101     ALOGI("Attempt to load conf from %s", p_path);
    102 
    103     if ((p_file = fopen(p_path, "r")) != NULL)
    104     {
    105         /* read line by line */
    106         while (fgets(line, CONF_MAX_LINE_LEN+1, p_file) != NULL)
    107         {
    108             if (line[0] == CONF_COMMENT)
    109                 continue;
    110 
    111             p_name = strtok(line, CONF_DELIMITERS);
    112 
    113             if (NULL == p_name)
    114             {
    115                 continue;
    116             }
    117 
    118             p_value = strtok(NULL, CONF_DELIMITERS);
    119 
    120             if (NULL == p_value)
    121             {
    122                 ALOGW("vnd_load_conf: missing value for name: %s", p_name);
    123                 continue;
    124             }
    125 
    126             p_entry = (conf_entry_t *)conf_table;
    127 
    128             while (p_entry->conf_entry != NULL)
    129             {
    130                 if (strcmp(p_entry->conf_entry, (const char *)p_name) == 0)
    131                 {
    132                     p_entry->p_action(p_name, p_value, p_entry->param);
    133                     break;
    134                 }
    135 
    136                 p_entry++;
    137             }
    138         }
    139 
    140         fclose(p_file);
    141     }
    142     else
    143     {
    144         ALOGI( "vnd_load_conf file >%s< not found", p_path);
    145     }
    146 }
    147 
    148