FreeCalypso > hg > fc-tourmaline

annotate src/g23m-aci/gdd_dio/gdd_sys.h @ 75:8697f358f505

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backlight rework: Condat light driver accepts levels The present change is another intermediate step on the path toward new FreeCalypso backlight handling. At this intermediate step the Condat light driver accepts 0-255 backlight levels driven by MFW, and puts them out on PWL on Luna development boards. At the same time on C139 it is now possible to turn on the display backlight with or without the keypad bl - the lsb of the 0-255 backlight level controls the keypad bl. MFW presently drives only 0 and 255 backlight levels, thus there is no visible behavioral change yet - but the plan for subsequent stages of this backlight rework is to add a dimmed backlight state (no keypad bl on C139) during active calls.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 24 Oct 2020 20:44:04 +0000
parents fa8dc04885d8
children
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1 /*
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2 +-----------------------------------------------------------------------------
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3 | Project : GSM-F&D (8411)
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4 | Modul : gdd_sys.h
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5 +-----------------------------------------------------------------------------
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6 | Copyright 2005 Texas Instruments Berlin, AG
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7 | All rights reserved.
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8 |
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9 | This file is confidential and a trade secret of Texas
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10 | Instruments Berlin, AG
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11 | The receipt of or possession of this file does not convey
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12 | any rights to reproduce or disclose its contents or to
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13 | manufacture, use, or sell anything it may describe, in
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14 | whole, or in part, without the specific written consent of
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15 | Texas Instruments Berlin, AG.
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16 +-----------------------------------------------------------------------------
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17 | Purpose : API for limited system functionality offered to application
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18 | domain libraries.
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19 +-----------------------------------------------------------------------------
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20 */
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21
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22 #ifndef GDD_SYS_H
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23 #define GDD_SYS_H
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24
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25 /*==== DEFINITIONS ==========================================================*/
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26
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27 typedef int T_GDD_SEM;
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29
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30 /*==== DYNAMIC MEMORY FUNCTIONS =============================================*/
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31
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33 /*
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34 +------------------------------------------------------------------------------
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35 | Function : gdd_sys_mem_malloc
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36 +------------------------------------------------------------------------------
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37 | Description : Allocate memory.
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38 |
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39 | Parameters : size - Size of memory required.
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40 |
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41 | Return : Pointer to first byte of allocated memory.
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42 | 0 if allocation failed.
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43 +------------------------------------------------------------------------------
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44 */
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45 void * gdd_sys_mem_malloc(int size);
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46
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47
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48 /*
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49 +------------------------------------------------------------------------------
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50 | Function : gdd_sys_mem_free
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51 +------------------------------------------------------------------------------
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52 | Description : Release memory which was previously allocated.
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53 |
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54 | Parameters : p - Pointer to memory to be deallocated
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55 +------------------------------------------------------------------------------
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56 */
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57 void gdd_sys_mem_free(void * p);
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58
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59
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60 /*==== SEMAPHORE FUNCTIONS ==================================================*/
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61
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62
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63 /*
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64 +------------------------------------------------------------------------------
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65 | Function : gdd_sys_sem_open
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66 +------------------------------------------------------------------------------
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67 | Description : Opens a (counting) semaphore specified by its name. If the
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68 | semaphore does not exist, it will be created with the initial
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69 | count given. If the semaphore already exists the parameter count
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70 | will be ignored.
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71 |
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72 | Parameters : name - Some name to identify the semaphore
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73 | count - initial count (e.g. 1 for a binary sem.)
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74 |
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75 | Return : Returns handle to created semaphore, or -1 if an error occured.
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76 +------------------------------------------------------------------------------
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77 */
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78 T_GDD_SEM gdd_sys_sem_open(char * name, unsigned short count);
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79
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80
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81 /*
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82 +------------------------------------------------------------------------------
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83 | Function : gdd_sys_sem_close
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84 +------------------------------------------------------------------------------
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85 | Description : Closes a semaphore
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86 |
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87 | Parameters : sem - handle of semaphore
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88 |
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89 | Return : 0 = succees
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90 | 1 = error
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91 +------------------------------------------------------------------------------
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92 */
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93 int gdd_sys_sem_close(T_GDD_SEM sem);
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94
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95
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96 /*
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97 +------------------------------------------------------------------------------
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98 | Function : gdd_sys_sem_down
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99 +------------------------------------------------------------------------------
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100 | Description : This functions obtains the specified semaphore, i.e.
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101 | the counter is decremented, if it is greater than zero.
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102 | If the counter is equal to zero, than the calling task is
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103 | suspended until the counter is incremented by another task.
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104 | If the caller is a non-task thread the function returns
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105 | immediately regardless if the request can be satisfied or not.
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106 | In this case, -1 is returned if the counter was already zero.
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107 |
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108 | Parameters : sem - handle of semaphore
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109 |
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110 | Return : 0 = succees
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111 | 1 = error
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112 +------------------------------------------------------------------------------
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113 */
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114 int gdd_sys_sem_down(T_GDD_SEM sem);
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115
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116
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117 /*
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118 +------------------------------------------------------------------------------
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119 | Function : gdd_sys_sem_down
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120 +------------------------------------------------------------------------------
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121 | Description : Releases a semaphore, i.e. counter is incremented.
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122 |
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123 | Parameters : sem - handle of semaphore
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124 |
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125 | Return : 0 = succees
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126 | 1 = error
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127 +------------------------------------------------------------------------------
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128 */
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129 int gdd_sys_sem_up(T_GDD_SEM sem);
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130
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131
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132 /*
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133 +------------------------------------------------------------------------------
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134 | Function : gdd_sys_sem_status
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135 +------------------------------------------------------------------------------
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136 | Description : Query (obtain) the counter of a semaphore.
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137 |
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138 | Parameters : sem - handle of semaphore
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139 | count - output variable to pass back the counter
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140 |
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141 | Return : 0 = succees
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142 | 1 = error
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143 +------------------------------------------------------------------------------
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144 */
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145 int gdd_sys_sem_status(T_GDD_SEM sem, /*out*/ unsigned short * count);
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146
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147
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148 #endif /* GDD_SYS_H */