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intel_extreme: Improve LVDS panel detection robustness

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* If older generation, check for mobile. If mobile GPU
  is found, make an assumption that a LVDS panel exists
  and attempt to leverage the vbios or VESA EDID.
This commit is contained in:
Alexander von Gluck IV
2016-04-28 10:45:31 -05:00
parent 42b7678198
commit dee0f365e1
2 changed files with 33 additions and 14 deletions
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src/add-ons/accelerants/intel_extreme/Ports.cpp
+30 -11
View File
@@ -68,9 +68,9 @@ wait_for_clear(addr_t address, uint32 mask, uint32 timeout)
Port::Port(port_index index, const char* baseName)
:
fPipe(NULL),
fEDIDState(B_NO_INIT),
fPortIndex(index),
fPortName(NULL),
fEDIDState(B_NO_INIT)
fPortName(NULL)
{
char portID[2];
portID[0] = 'A' + index - INTEL_PORT_A;
@@ -360,22 +360,41 @@ LVDSPort::IsConnected()
TRACE("%s: %s PortRegister: 0x%" B_PRIxADDR "\n", __func__, PortName(),
_PortRegister());
// Older generations don't have LVDS detection. If not mobile skip.
if (gInfo->shared_info->device_type.Generation() <= 4) {
if (!gInfo->shared_info->device_type.IsMobile()) {
TRACE("LVDS: Skipping LVDS detection due to gen and not mobile\n");
return false;
}
}
uint32 registerValue = read32(_PortRegister());
if (gInfo->shared_info->device_type.HasPlatformControlHub()) {
uint32 registerValue = read32(_PortRegister());
// there's a detection bit we can use
if ((registerValue & PCH_LVDS_DETECTED) == 0) {
TRACE("LVDS: Not detected\n");
return false;
}
// TODO: Skip if eDP support
} else if (gInfo->shared_info->device_type.Generation() <= 4) {
// Older generations don't have LVDS detection. If not mobile skip.
if (!gInfo->shared_info->device_type.IsMobile()) {
TRACE("LVDS: Skipping LVDS detection due to gen and not mobile\n");
return false;
}
// If mobile, try to grab EDID
// Linux seems to look at lid status for LVDS port detection
// If we don't get EDID, we can use vbios native mode or vesa?
if (!HasEDID()) {
#if 0
if (gInfo->shared_info->got_vbt) {
// TODO: Fake EDID from vbios native mode?
// I feel like this would be more accurate
} else if...
#endif
if (gInfo->shared_info->has_vesa_edid_info) {
TRACE("LVDS: Using VESA edid info\n");
memcpy(&fEDIDInfo, &gInfo->shared_info->vesa_edid_info,
sizeof(edid1_info));
fEDIDState = B_OK;
// HasEDID now true
} else {
TRACE("LVDS: Couldn't find any valid EDID!\n");
return false;
}
}
}
// Try getting EDID, as the LVDS port doesn't overlap with anything else,
src/add-ons/accelerants/intel_extreme/Ports.h
+3 -3
View File
@@ -85,15 +85,15 @@ static status_t _SetI2CSignals(void* cookie, int clock,
display_mode fCurrentMode;
Pipe* fPipe;
status_t fEDIDState;
edid1_info fEDIDInfo;
private:
virtual addr_t _DDCRegister() = 0;
virtual addr_t _PortRegister() = 0;
port_index fPortIndex;
char* fPortName;
status_t fEDIDState;
edid1_info fEDIDInfo;
};