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Brightness (macOS): prioritizes DDC/CI reply over simple I²C transaction

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This commit is contained in:
李通洲
2025-10-18 01:11:03 +08:00
parent 554e7bce4a
commit 96c7c2966d
1 changed files with 2 additions and 6 deletions
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src/detection/brightness/brightness_apple.c
+2 -6
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@@ -140,15 +140,11 @@ static IOOptionBits getSupportedTransactionType(void) {
int64_t types = 0;
ffCfNumGetInt64(IOI2CTransactionTypes, &types);
/*
We want DDCciReply but Simple is better than No-thing.
Combined and DisplayPortNative are not useful in our case.
*/
if (types) {
if ((1 << kIOI2CSimpleTransactionType) & (uint64_t) types)
return kIOI2CSimpleTransactionType;
if ((1 << kIOI2CDDCciReplyTransactionType) & (uint64_t) types)
return kIOI2CDDCciReplyTransactionType;
if ((1 << kIOI2CSimpleTransactionType) & (uint64_t) types)
return kIOI2CSimpleTransactionType;
if ((1 << kIOI2CCombinedTransactionType) & (uint64_t) types)
return kIOI2CCombinedTransactionType;
if ((1 << kIOI2CDisplayPortNativeTransactionType) & (uint64_t) types)