android_device_xiaomi_sm8450-common/gps/utils/loc_target.cpp

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/*
Changes from Qualcomm Innovation Center are provided under the following license:

Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted (subject to the limitations in the
disclaimer below) provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.

    * Redistributions in binary form must reproduce the above
      copyright notice, this list of conditions and the following
      disclaimer in the documentation and/or other materials provided
      with the distribution.

    * Neither the name of Qualcomm Innovation Center, Inc. nor the names of its
      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <log_util.h>
#include "loc_target.h"
#include "loc_log.h"
#include <loc_pla.h>

#define APQ8064_ID_1 "109"
#define APQ8064_ID_2 "153"
#define MPQ8064_ID_1 "130"
#define MSM8930_ID_1 "142"
#define MSM8930_ID_2 "116"
#define APQ8030_ID_1 "157"
#define APQ8074_ID_1 "184"

#define LINE_LEN 100
#define STR_LIQUID      "Liquid"
#define STR_SURF        "Surf"
#define STR_MTP         "MTP"
#define STR_APQ         "apq"
#define STR_SDC         "sdc"  // alternative string for APQ targets
#define STR_QCS         "qcs"  // string for Gen9 APQ targets
#define STR_MSM         "msm"
#define STR_SDM         "sdm"  // alternative string for MSM targets
#define STR_APQ_NO_WGR  "baseband_apq_nowgr"
#define STR_AUTO        "auto"
#define IS_STR_END(c) ((c) == '\0' || (c) == '\n' || (c) == '\r')
#define LENGTH(s) (sizeof(s) - 1)
#define GPS_CHECK_NO_ERROR 0
#define GPS_CHECK_NO_GPS_HW 1

static unsigned int gTarget = (unsigned int)-1;

static int read_a_line(const char * file_path, char * line, int line_size)
{
    FILE *fp;
    int result = 0;

    * line = '\0';
    fp = fopen(file_path, "r" );
    if( fp == NULL ) {
        LOC_LOGE("open failed: %s: %s\n", file_path, strerror(errno));
        result = -1;
    } else {
        int len;
        fgets(line, line_size, fp);
        len = strlen(line);
        while ('\n' == line[len-1]) {
            // If there is a new line at end of string, replace it with NULL
            line[len-1] = '\0';
            len--;
        }
        len = len < line_size - 1? len : line_size - 1;
        line[len] = '\0';
        LOC_LOGD("cat %s: %s", file_path, line);
        fclose(fp);
    }
    return result;
}

/*The character array passed to this function should have length
  of atleast PROPERTY_VALUE_MAX*/
void loc_get_target_baseband(char *baseband, int array_length)
{
    if(baseband && (array_length >= PROPERTY_VALUE_MAX)) {
        property_get("ro.baseband", baseband, "");
        LOC_LOGD("%s:%d]: Baseband: %s\n", __func__, __LINE__, baseband);
    }
    else {
        LOC_LOGE("%s:%d]: NULL parameter or array length less than PROPERTY_VALUE_MAX\n",
                 __func__, __LINE__);
    }
}

/*The character array passed to this function should have length
  of atleast PROPERTY_VALUE_MAX*/
void loc_get_platform_name(char *platform_name, int array_length)
{
    if(platform_name && (array_length >= PROPERTY_VALUE_MAX)) {
        property_get("ro.board.platform", platform_name, "");
        LOC_LOGD("%s:%d]: Target name: %s\n", __func__, __LINE__, platform_name);
    }
    else {
        LOC_LOGE("%s:%d]: Null parameter or array length less than PROPERTY_VALUE_MAX\n",
                 __func__, __LINE__);
    }
}

/*The character array passed to this function should have length
  of atleast PROPERTY_VALUE_MAX*/
void loc_get_auto_platform_name(char *platform_name, int array_length)
{
    if(platform_name && (array_length >= PROPERTY_VALUE_MAX)) {
        property_get("ro.hardware.type", platform_name, "");
        LOC_LOGD("%s:%d]: Autoplatform name: %s\n", __func__, __LINE__, platform_name);
    }
    else {
        LOC_LOGE("%s:%d]: Null parameter or array length less than PROPERTY_VALUE_MAX\n",
                 __func__, __LINE__);
    }
}

/*Reads the property ro.config.low_ram to identify if this is a low ram target
  Returns:
  0 if not a low ram target
  1 if this is a low ram target
*/
int loc_identify_low_ram_target()
{
    char low_ram_target[PROPERTY_VALUE_MAX];
    property_get("ro.config.low_ram", low_ram_target, "");
    LOC_LOGd("low ram target: %s\n", low_ram_target);
    return !(strncmp(low_ram_target, "true", PROPERTY_VALUE_MAX));
}

/*The character array passed to this function should have length
  of atleast PROPERTY_VALUE_MAX*/
/* Reads the soc_id node and return the soc_id value */
void loc_get_device_soc_id(char *soc_id_value, int array_length)
{
    static const char soc_id[]     = "/sys/devices/soc0/soc_id";
    static const char soc_id_dep[] = "/sys/devices/system/soc/soc0/id";
    int return_val = 0;

    if (soc_id_value && (array_length >= PROPERTY_VALUE_MAX)) {
        if (!access(soc_id, F_OK)) {
            return_val = read_a_line(soc_id, soc_id_value, array_length);
        } else {
            return_val = read_a_line(soc_id_dep, soc_id_value, array_length);
        }
        if (0 == return_val) {
            LOC_LOGd("SOC Id value: %s\n", soc_id_value);
        } else {
            LOC_LOGe("Unable to read the soc_id value\n");
        }
    } else {
        LOC_LOGe("Null parameter or array length less than PROPERTY_VALUE_MAX\n");
    }
}

unsigned int loc_get_target(void)
{
    if (gTarget != (unsigned int)-1)
        return gTarget;

    static const char hw_platform[]      = "/sys/devices/soc0/hw_platform";
    static const char hw_platform_dep[]  =
        "/sys/devices/system/soc/soc0/hw_platform";
    static const char mdm[]              = "/target"; // mdm target we are using

    char rd_hw_platform[LINE_LEN];
    char rd_id[LINE_LEN];
    char rd_mdm[LINE_LEN];
    char baseband[LINE_LEN];
    char rd_auto_platform[LINE_LEN];

    loc_get_target_baseband(baseband, sizeof(baseband));

    if (!access(hw_platform, F_OK)) {
        read_a_line(hw_platform, rd_hw_platform, LINE_LEN);
    } else {
        read_a_line(hw_platform_dep, rd_hw_platform, LINE_LEN);
    }
    // Get the soc-id for this device.
    loc_get_device_soc_id(rd_id, sizeof(rd_id));

    /*check automotive platform*/
    loc_get_auto_platform_name(rd_auto_platform, sizeof(rd_auto_platform));
    if( !memcmp(rd_auto_platform, STR_AUTO, LENGTH(STR_AUTO)) )
    {
          gTarget = TARGET_AUTO;
          goto detected;
    }

    if( !memcmp(baseband, STR_APQ_NO_WGR, LENGTH(STR_APQ_NO_WGR)) ){

        gTarget = TARGET_NO_GNSS;
        goto detected;
    }

    if( !memcmp(baseband, STR_APQ, LENGTH(STR_APQ)) ||
        !memcmp(baseband, STR_SDC, LENGTH(STR_SDC)) ||
        !memcmp(baseband, STR_QCS, LENGTH(STR_QCS)) ) {

        if( !memcmp(rd_id, MPQ8064_ID_1, LENGTH(MPQ8064_ID_1))
            && IS_STR_END(rd_id[LENGTH(MPQ8064_ID_1)]) )
            gTarget = TARGET_NO_GNSS;
        else
            gTarget = TARGET_APQ_SA;
    } else if (((!memcmp(rd_hw_platform, STR_LIQUID, LENGTH(STR_LIQUID))
                 && IS_STR_END(rd_hw_platform[LENGTH(STR_LIQUID)])) ||
                (!memcmp(rd_hw_platform, STR_SURF,   LENGTH(STR_SURF))
                 && IS_STR_END(rd_hw_platform[LENGTH(STR_SURF)])) ||
                (!memcmp(rd_hw_platform, STR_MTP,   LENGTH(STR_MTP))
                 && IS_STR_END(rd_hw_platform[LENGTH(STR_MTP)]))) &&
               !read_a_line( mdm, rd_mdm, LINE_LEN)) {
        gTarget = TARGET_MDM;
    } else if( (!memcmp(rd_id, MSM8930_ID_1, LENGTH(MSM8930_ID_1))
                && IS_STR_END(rd_id[LENGTH(MSM8930_ID_1)])) ||
               (!memcmp(rd_id, MSM8930_ID_2, LENGTH(MSM8930_ID_2))
                && IS_STR_END(rd_id[LENGTH(MSM8930_ID_2)])) ) {
        gTarget = TARGET_MSM_NO_SSC;
    } else if ( !memcmp(baseband, STR_MSM, LENGTH(STR_MSM)) ||
                !memcmp(baseband, STR_SDM, LENGTH(STR_SDM)) ) {
        gTarget = TARGET_DEFAULT;
    } else {
        gTarget = TARGET_UNKNOWN;
    }

detected:
    LOC_LOGW("HAL: %s returned %d", __FUNCTION__, gTarget);
    return gTarget;
}