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annotate nuc-fw/bsp/armio.c @ 132:2c5160a9d652

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nuc-fw: switched from nucdemo to Riviera, got some serial output
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sat, 02 Nov 2013 01:48:11 +0000
parents e40d8661ecab
children
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1 /*
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2 * ARMIO.C
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3 *
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4 *
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5 * Control diagnostic bits
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6 *
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7 * Reference : GCS207
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8 *
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9 */
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10
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11
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12 #include "../include/config.h"
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13 #include "../include/sys_types.h"
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14
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15 #include "mem.h"
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16 #include "iq.h"
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17 #include "armio.h"
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18
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19 #if 0
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20 /* FreeCalypso: abb.h hasn't been integrated yet */
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21 #include "abb.h" // for AI_Power function : to be removed, use ABB_Power_Off in abb.c file instead !!!
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22 #endif
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23
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24 #if (CHIPSET != 12)
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25 /*
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26 * AI_EnableBit
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27 *
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28 * Enable ARMIO input/output bit (see CLKM module specification)
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29 */
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30 void AI_EnableBit(int bit)
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31 {
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32 *((volatile SYS_UWORD16 *) CLKM_IO_CNTL) |= (1<<bit);
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33 }
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34
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35 /*
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36 * AI_DisableBit
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37 *
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38 * Disable ARMIO input/output bit (see CLKM module specification)
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39 */
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40 void AI_DisableBit(int bit)
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41 {
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42 *((volatile SYS_UWORD16 *) CLKM_IO_CNTL) &= ~(1<<bit);
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43 }
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44
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45 #endif /* CHIPSET != 12 */
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46
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47 /*
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48 * AI_SetBit
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49 *
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50 * Switch-on one bit
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51 */
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52 void AI_SetBit(int bit)
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53 {
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54 *((volatile SYS_UWORD16 *) ARMIO_OUT) |= (1<<bit);
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55 }
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56
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57 /*
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58 * AI_ResetBit
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59 *
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60 * Switch-off one bit
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61 */
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62 void AI_ResetBit(int bit)
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63 {
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64 *((volatile SYS_UWORD16 *) ARMIO_OUT) &= ~(1<<bit);
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65 }
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66
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67 /*
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68 * AI_ConfigBitAsOutput
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69 *
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70 * Set this bit as an output
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71 */
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72 void AI_ConfigBitAsOutput(int bit)
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73 {
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74 *((volatile SYS_UWORD16 *) ARMIO_IO_CNTL) &= ~(1<<bit);
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75 }
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76
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77 /*
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78 * AI_ConfigBitAsInput
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79 *
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80 * Set this bit as an input
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81 */
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82 void AI_ConfigBitAsInput(int bit)
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83 {
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84 *((volatile SYS_UWORD16 *) ARMIO_IO_CNTL) |= (1<<bit);
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85 }
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86
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87
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88 /*
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89 * AI_ReadBit
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90 *
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91 * Read value in register
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92 */
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93 SYS_BOOL AI_ReadBit(int bit)
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94 {
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95 if ((*((volatile SYS_UWORD16 *) ARMIO_IN)) & (1<<bit))
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96 return (1);
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97 else
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98 return (0);
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99 }
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100
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101 /*
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102 * AI_Power
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103 *
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104 * Switch-on or off the board
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105 *
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106 * Parameters : SYS_UWORD8 power: 1 to power-on (maintain power)
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107 * 0 to power-off
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108 *
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109 */
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110 // #if (!OP_L1_STANDALONE)
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111 #if 0
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112 void AI_Power(SYS_UWORD8 power)
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113 {
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114 if (power == 0)
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115 {
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116 ABB_Power_Off();
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117 }
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118 }
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119 #endif
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120
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121 /*
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122 * AI_ResetIoConfig
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123 *
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124 * Reset all default IO configurations
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125 *
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126 */
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127 void AI_ResetIoConfig(void)
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128 {
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129 *((volatile SYS_UWORD16 *) ARMIO_IO_CNTL) = 0xFFFF; // all bits are inputs
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130 #if (CHIPSET != 12)
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131 *((volatile SYS_UWORD16 *) CLKM_IO_CNTL) = 0; // default config
110
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132 #endif /* CHIPSET != 12 */
93
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133 }
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134
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135
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136 /*
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137 * AI_ClockEnable
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138 *
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139 * Enable ARMIO clock module
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140 *
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141 */
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142 void AI_ClockEnable(void)
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143 {
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144 *((volatile SYS_UWORD16 *) ARMIO_CNTL_REG) |= ARMIO_CLOCKEN; // set to 1 bit 5
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145 }
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146
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147 /*
110
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148 * The AI_InitIOConfig() function is target-specific.
93
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149 */
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150
110
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151 #ifdef CONFIG_TARGET_GTAMODEM
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152 /* version for the Openmoko GTA0x GSM modem */
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153 void AI_InitIOConfig(void)
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154 {
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155 // reset the IOs config
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156 AI_ResetIoConfig();
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157
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158 /*
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159 * The GTA0x Calypso block is a stripped-down version of the Leonardo,
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160 * reduced to the absolute minimum that is needed for a slave modem.
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161 * Almost all of the unused interface pins are left unconnected, only
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162 * a few are pulled externally to GND or VIO.
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163 *
117
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164 * We handle the unused pins the way TI's code does: configure them
110
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165 * as GPIOs, then as outputs driving a fixed value (high for GPIOs 8+,
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166 * low for 0-7).
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167 */
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168
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169 /* I'll be brave and turn the unused TSPDI input into a GPIO4 output */
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170 AI_EnableBit(0);
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171 /* Don't want to do that for the IO5 pin though, as it's wired to SIM_IO
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172 * through a resistor like on the Leonardo. */
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173 AI_DisableBit(1);
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174 /*
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175 * The following 2 lines are straight from the Leonardo source: enable
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176 * GPIO6 and GPIO8. GPIO6 takes the place of an ancient VEGA3(?) compat
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177 * pin, and GPIO8 takes the place of MCUEN1 which no Leonardo-based
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178 * design seems to use.
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179 *
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180 * Note that GPIO7 is not enabled in this version, so that pin retains
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181 * its meaning as nRESET_OUT - but it's an unused output, rather than
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182 * a floating input, so we are fine.
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183 */
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184 AI_EnableBit(2);
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185 AI_EnableBit(4);
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186
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187 /*
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188 * The GTA0x modem has no Calypso-interfaced Bluetooth, nor any other
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189 * use for MCSI, aka the DSP backdoor interface. So we turn these 4 pins
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190 * into GPIOs driving high output state like TI's code does in the
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191 * sans-BT configuration.
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192 */
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193 AI_EnableBit(5);
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194 AI_EnableBit(6);
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195 AI_EnableBit(7);
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196 AI_EnableBit(8);
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197
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198 /* ditto for MCUEN2 turned GPIO 13 */
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199 AI_EnableBit(9);
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200
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201 // ARMIO_OUT register configuration :
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202 // set IOs 8,9,10,11,12 and 13 as high
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203 // set IOs 0 to 7 as low
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204 // Falcon's note: the BP->AP interrupt line gets set low as desired
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205 *((volatile SYS_UWORD16 *) ARMIO_OUT) = 0x3F00;
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206
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207 // ARMIO_CNTL_REG register configuration :
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208 // set IOs 0,1,6,8,9,10,11,12 and 13 as outputs.
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209 // Falcon's addition: set 2, 3 and 4 as outputs too,
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210 // as they are no-connects on the board.
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211
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212 AI_ConfigBitAsOutput(0);
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213 AI_ConfigBitAsOutput(1);
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214 AI_ConfigBitAsOutput(2);
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215 AI_ConfigBitAsOutput(3);
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216 AI_ConfigBitAsOutput(4);
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217 AI_ConfigBitAsOutput(6);
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218 AI_ConfigBitAsOutput(8);
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219 AI_ConfigBitAsOutput(9);
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220 AI_ConfigBitAsOutput(10);
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221 AI_ConfigBitAsOutput(11);
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222 AI_ConfigBitAsOutput(12);
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223 AI_ConfigBitAsOutput(13);
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224 }
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225 #endif
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226
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227 #ifdef CONFIG_TARGET_PIRELLI
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228 /* version for Pirelli DP-L10 */
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229 void AI_InitIOConfig(void)
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230 {
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231 // reset the IOs config
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232 AI_ResetIoConfig();
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233
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234 /*
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235 * In the case of the Pirelli, our understanding of the hardware
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236 * is severely crippled by the lack of schematics and the difficulty of
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237 * reverse engineering from steve-m's PCB layer grind-down scans.
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238 *
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239 * The folllowing ARMIO configuration has been copied from OsmocomBB.
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240 */
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241 AI_EnableBit(0);
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242 AI_EnableBit(1);
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243 AI_EnableBit(2);
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244 AI_EnableBit(3);
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245 AI_EnableBit(4);
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246 AI_EnableBit(9);
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247 /* GPIO out all zeros */
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248 *((volatile SYS_UWORD16 *) ARMIO_OUT) = 0x0000;
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249 /* setup outputs like OsmocomBB does */
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diff changeset
250 AI_ConfigBitAsOutput(1);
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diff changeset
251 AI_ConfigBitAsOutput(4);
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diff changeset
252 AI_ConfigBitAsOutput(7);
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253 }
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254 #endif
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255
93
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256 /*
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257 * AI_SelectIOForIT
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258 *
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259 * Select which IO will be used to generate an interrupt.
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260 * 'Edge' specifies if interrup must be detected on falling or rising edge.
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261 *
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262 * Warning: parameters are not checked.
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263 */
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264
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265 void AI_SelectIOForIT (SYS_UWORD16 Pin, SYS_UWORD16 Edge)
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266 {
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267 #if (CHIPSET == 12)
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268 /*
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269 * Update INTERRUPT_LEVEL_REG with Edge configuration on Pin selection
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270 */
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271 GPIO_INTERRUPT_LEVEL_REG = (Edge & 0x0001) << Pin;
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272
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273 /*
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274 * Update INTERRUPT_MASK_REG to enable interrupt generation on Pin selection
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275 */
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276 GPIO_INTERRUPT_MASK_REG = 1 << Pin;
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277 #else
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278 /*
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279 * Bit SET_GPIO_EVENT_MODE (bit 0) is set to enable the GPIO event mode.
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280 */
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281
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282 *((volatile SYS_UWORD16 *) ARMIO_GPIO_EVENT_MODE) = (Pin << 1) + (Edge << 5) + 1;
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283 #endif
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284 }
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285
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286 #if (CHIPSET != 12)
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287 /*
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288 * AI_CheckITSource
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289 *
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290 * Check if the interrupt specified by 'Source' is active or not.
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291 *
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292 * Output: 0: IT is not active
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293 * 1: IT is active
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294 *
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295 * Warning: parameters are not checked.
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296 *
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297 * Warning: If the keypad and GPIO interrupts may occur the GPIO interrupt
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298 * must be checked first because the GPIO status bit is reset when
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299 * the register is read.
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300 */
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301
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302 int AI_CheckITSource (SYS_UWORD16 Source)
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303 {
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304 return (*((volatile SYS_UWORD16 *) ARMIO_KBD_GPIO_INT) & Source ? 1 : 0);
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305 }
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306
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307 /*
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308 * AI_UnmaskIT
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309 *
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310 * Unmask the IT specified by 'Source' (keyboard or GPIO).
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311 *
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312 * Warning: parameters are not checked.
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313 */
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314
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315 void AI_UnmaskIT (SYS_UWORD16 Source)
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316 {
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317 *((volatile SYS_UWORD16 *) ARMIO_KBD_GPIO_MASKIT) &= ~Source;
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318 }
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319
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320 /*
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321 * AI_MaskIT
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322 *
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323 * Mask the IT specified by 'Source' (keyboard or GPIO).
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324 *
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325 * Warning: parameters are not checked.
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326 */
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327
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328 void AI_MaskIT (SYS_UWORD16 Source)
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329 {
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330 *((volatile SYS_UWORD16 *) ARMIO_KBD_GPIO_MASKIT) |= Source;
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331 }
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332 #endif /* CHIPSET != 12 */
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333
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334 #if (CHIPSET == 12)
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335
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336 void AI_MaskIT(SYS_UWORD16 d_io_number) {
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337 GPIO_INTERRUPT_MASK_REG |= (1 << d_io_number);
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338 } /* f_gpio_mask_it() */
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339
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340 void AI_UnmaskIT(SYS_UWORD16 d_io_number) {
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341 GPIO_INTERRUPT_MASK_REG &= ~(1 << d_io_number);
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342 } /* f_gpio_unmask_it() */
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343
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344 #endif