FreeCalypso > hg > freecalypso-tools

annotate loadtools/gtapower.c @ 505:7bf0d909c87e

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fc-loadtool flash ID check: change of reset after the check logic This change only affects those flash configurations that have ID checks enabled. The logic for resetting the flash after the ID check has been changed as follows: 1) If the check fails, we return without attempting to reset the flash. 2) If the check is successful, we reset the flash using the configured method (could be AMD or Intel or Intel W30) instead of always doing an AMD flash reset as the original code did.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 27 May 2019 19:58:01 +0000
parents e7502631a0f9
children
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1 /*
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2 * This module is included only when loadtools are being built to run on the
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3 * GTA0x application processor (AP). It provides automated modem power
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4 * control, i.e., coordinates modem power control with loadtools operations
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5 * for convenience.
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6 */
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7
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8 #include <sys/types.h>
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9 #include <sys/file.h>
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10 #include <stdio.h>
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11 #include <stdlib.h>
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12 #include <unistd.h>
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13
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14 /*
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15 * Check this pathname: it is correct for the kernel version I'm using
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16 * on my test GTA02, but it differs for some other kernel versions.
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17 */
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18 static char modem_powerctl_pathname[] =
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19 "/sys/bus/platform/devices/gta02-pm-gsm.0/power_on";
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20
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21 void
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22 set_gta_modem_power_ctrl(boolval)
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23 {
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24 char strbuf[16];
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25 int len, fd;
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26
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27 len = sprintf(strbuf, "%d\n", boolval);
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28 fd = open(modem_powerctl_pathname, O_WRONLY);
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29 if (fd < 0) {
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30 perror(modem_powerctl_pathname);
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31 exit(1);
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32 }
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33 write(fd, strbuf, len);
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34 close(fd);
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35 }
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36
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37 void
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38 fork_gta_modem_poweron()
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39 {
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40 int i;
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41
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42 i = fork();
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43 if (i < 0) {
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44 perror("fork");
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45 exit(1);
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46 }
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47 if (i)
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48 return;
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49 printf("Toggling %s\n", modem_powerctl_pathname);
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50 set_gta_modem_power_ctrl(0);
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51 usleep(350000);
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52 set_gta_modem_power_ctrl(1);
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53 exit(0);
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54 }