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1
2/******************************************************************************
3 *
4 * Module Name: hwgpe - Low level GPE enable/disable/clear functions
5 *
6 *****************************************************************************/
7
8/*

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60 void *Context);
61
62
63/******************************************************************************
64 *
65 * FUNCTION: AcpiHwGetGpeRegisterBit
66 *
67 * PARAMETERS: GpeEventInfo - Info block for the GPE
68 * GpeRegisterInfo - Info block for the GPE register
68 *
69 * RETURN: Register mask with a one in the GPE bit position
70 *
71 * DESCRIPTION: Compute the register mask for this GPE. One bit is set in the
72 * correct position for the input GPE.
73 *
74 ******************************************************************************/
75
76UINT32
77AcpiHwGetGpeRegisterBit (
79 ACPI_GPE_EVENT_INFO *GpeEventInfo,
80 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo)
78 ACPI_GPE_EVENT_INFO *GpeEventInfo)
79{
80
81 return ((UINT32) 1 <<
84 (GpeEventInfo->GpeNumber - GpeRegisterInfo->BaseGpeNumber));
82 (GpeEventInfo->GpeNumber - GpeEventInfo->RegisterInfo->BaseGpeNumber));
83}
84
85
86/******************************************************************************
87 *
88 * FUNCTION: AcpiHwLowSetGpe
89 *
90 * PARAMETERS: GpeEventInfo - Info block for the GPE to be disabled

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123 Status = AcpiHwRead (&EnableMask, &GpeRegisterInfo->EnableAddress);
124 if (ACPI_FAILURE (Status))
125 {
126 return (Status);
127 }
128
129 /* Set or clear just the bit that corresponds to this GPE */
130
133 RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo, GpeRegisterInfo);
131 RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo);
132 switch (Action)
133 {
134 case ACPI_GPE_CONDITIONAL_ENABLE:
135
136 /* Only enable if the EnableForRun bit is set */
137
138 if (!(RegisterBit & GpeRegisterInfo->EnableForRun))
139 {

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192 {
193 return (AE_NOT_EXIST);
194 }
195
196 /*
197 * Write a one to the appropriate bit in the status register to
198 * clear this GPE.
199 */
202 RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo, GpeRegisterInfo);
200 RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo);
201
202 Status = AcpiHwWrite (RegisterBit,
203 &GpeRegisterInfo->StatusAddress);
204
205 return (Status);
206}
207
208

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240 }
241
242 /* Get the info block for the entire GPE register */
243
244 GpeRegisterInfo = GpeEventInfo->RegisterInfo;
245
246 /* Get the register bitmask for this GPE */
247
250 RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo, GpeRegisterInfo);
248 RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo);
249
250 /* GPE currently enabled? (enabled for runtime?) */
251
252 if (RegisterBit & GpeRegisterInfo->EnableForRun)
253 {
254 LocalEventStatus |= ACPI_EVENT_FLAG_ENABLED;
255 }
256

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