FreeCalypso > hg > fc-tourmaline
annotate src/gpf/osl/os_sem_ir.c @ 287:3dee79757ae4
UI fw: load handheld audio mode on boot
We have now reached the point where use of audio mode config files
should be considered mandatory. In ACI usage we can tell users that
they need to perform an AT@AUL of some appropriate audio mode, but
in UI-enabled fw we really need to have the firmware load audio modes
on its own, so that correct audio config gets established when the
handset or development board runs on its own, without a connected host
computer.
Once have FC Venus with both main and headset audio channels and
headset plug insertion detection, our fw will need to automatically
load the handheld mode or the headset mode depending on the plug
insertion state. For now we load only the handheld mode, which has
been tuned for FC-HDS4 on FC Luna.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 13 Nov 2021 03:20:57 +0000 |
parents | 4e78acac3d88 |
children |
rev | line source |
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0
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1 /* |
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2 * This C module is a reconstruction based on the disassembly of |
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3 * os_sem.obj in frame_na7_db_ir.lib from the Leonardo package. |
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4 */ |
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5 |
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6 /* set of included headers from COFF symtab: */ |
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7 #include <stdio.h> |
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8 #include <string.h> |
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9 #include "nucleus.h" |
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10 #include "typedefs.h" |
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11 #include "os.h" |
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12 #include "gdi.h" |
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13 #include "os_types.h" |
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14 #include "os_glob.h" |
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15 |
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16 extern T_OS_SEM_TABLE_ENTRY SemTable[]; |
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17 extern unsigned os_time_to_tick_multiplier; |
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18 |
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19 int |
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20 ReleaseSemaphoreCB(NU_SEMAPHORE *SemCB) |
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21 { |
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22 if (NU_Release_Semaphore(SemCB) == NU_SUCCESS) |
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23 return(OS_OK); |
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24 else |
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25 return(OS_ERROR); |
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26 } |
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27 |
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28 GLOBAL LONG |
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29 os_ReleaseSemaphore(OS_HANDLE TaskHandle, OS_HANDLE SemHandle) |
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30 { |
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31 if (NU_Release_Semaphore(&SemTable[SemHandle].SemCB) == NU_SUCCESS) |
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32 return(OS_OK); |
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33 else |
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34 return(OS_ERROR); |
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35 } |
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36 |
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37 int |
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38 ObtainSemaphoreCB(NU_SEMAPHORE *SemCB, ULONG Timeout, USHORT wait_check) |
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39 { |
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40 UNSIGNED nu_timeout; |
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41 STATUS sts; |
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42 int ret; |
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43 |
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44 ret = OS_OK; |
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45 if (Timeout != OS_SUSPEND) |
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46 nu_timeout = TIME_TO_SYSTEM_TICKS(Timeout); |
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47 else if (wait_check == 1) |
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48 nu_timeout = 1; |
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49 else |
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50 nu_timeout = NU_SUSPEND; |
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51 for (;;) { |
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52 sts = NU_Obtain_Semaphore(SemCB, nu_timeout); |
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53 switch (sts) { |
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54 case NU_SUCCESS: |
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55 return(ret); |
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56 case NU_INVALID_SEMAPHORE: |
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57 return(OS_ERROR); |
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58 case NU_INVALID_SUSPEND: |
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59 nu_timeout = 0; |
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60 continue; |
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61 case NU_TIMEOUT: |
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62 case NU_UNAVAILABLE: |
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63 if (nu_timeout == 1 && wait_check == 1) { |
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64 nu_timeout = NU_SUSPEND; |
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65 ret = OS_WAITED; |
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66 continue; |
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67 } |
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68 return(OS_TIMEOUT); |
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69 default: |
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70 /* |
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71 * Disassembly reveals that the original code |
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72 * has an endless loop here, the equivalent |
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73 * of continue. My guess is that they simply |
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74 * forgot the default case, and so control |
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75 * falls onto the closing brace of the switch |
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76 * and then onto the closing brace of the for |
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77 * loop. But I prefer better error handling, |
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78 * hence the present addition. - Space Falcon |
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79 */ |
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80 return(OS_ERROR); |
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81 } |
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82 } |
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83 } |
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84 |
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85 GLOBAL LONG |
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86 os_ObtainSemaphore(OS_HANDLE TaskHandle, OS_HANDLE SemHandle, ULONG Timeout) |
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87 { |
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88 if (SemHandle > MaxSemaphores) |
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89 return(OS_ERROR); |
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90 return ObtainSemaphoreCB(&SemTable[SemHandle].SemCB, Timeout, 0); |
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91 } |