FreeCalypso > hg > freecalypso-sw
annotate loadtools/gtapower.c @ 923:10b4bed10192
gsm-fw/L1: fix for the DSP patch corruption bug
The L1 code we got from the LoCosto fw contains a feature for DSP CPU load
measurement. This feature is a LoCosto-ism, i.e., not applicable to earlier
DBB chips (Calypso) with their respective earlier DSP ROMs. Most of the
code dealing with that feature is conditionalized as #if (DSP >= 38),
but one spot was missed, and the MCU code was writing into an API word
dealing with this feature. In TCS211 this DSP API word happens to be
used by the DSP code patch, hence that write was corrupting the patched
DSP code.
author | Mychaela Falconia <falcon@ivan.Harhan.ORG> |
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date | Mon, 19 Oct 2015 17:13:56 +0000 |
parents | ccc5161848c7 |
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rev | line source |
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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 } |