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intel_extreme: Improve LVDS panel control

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* Disable panel before modification
* Properly wait for panel power
This commit is contained in:
Alexander von Gluck IV
2015-11-23 17:32:40 -06:00
parent cc891135c8
commit bc98dc421e
1 changed files with 45 additions and 10 deletions
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src/add-ons/accelerants/intel_extreme/Ports.cpp
+45 -10
View File
@@ -37,6 +37,34 @@
#define CALLED(x...) TRACE("CALLED %s\n", __PRETTY_FUNCTION__)
static bool
wait_for_set(addr_t address, uint32 mask, uint32 timeout)
{
int interval = 50;
uint32 i = 0;
for(i = 0; i <= timeout; i += interval) {
spin(interval);
if ((read32(address) & mask) != 0)
return true;
}
return false;
}
static bool
wait_for_clear(addr_t address, uint32 mask, uint32 timeout)
{
int interval = 50;
uint32 i = 0;
for(i = 0; i <= timeout; i += interval) {
spin(interval);
if ((read32(address) & mask) == 0)
return true;
}
return false;
}
Port::Port(port_index index, const char* baseName)
:
fDisplayPipe(NULL),
@@ -361,6 +389,20 @@ LVDSPort::SetDisplayMode(display_mode* target, uint32 colorMode)
return B_ERROR;
}
addr_t panelControl = INTEL_PANEL_CONTROL;
addr_t panelStatus = INTEL_PANEL_STATUS;
if (gInfo->shared_info->device_type.HasPlatformControlHub()) {
panelControl = PCH_PANEL_CONTROL;
panelStatus = PCH_PANEL_STATUS;
}
// Power off Panel
write32(panelControl, read32(panelControl) & ~PANEL_CONTROL_POWER_TARGET_ON);
read32(panelControl);
if (!wait_for_clear(panelStatus, PANEL_STATUS_POWER_ON, 1000))
ERROR("%s: %s didn't power off within 1000ms!\n", __func__, PortName());
// TODO: Fix software scaling?
// Disable PanelFitter for now
@@ -503,18 +545,11 @@ LVDSPort::SetDisplayMode(display_mode* target, uint32 colorMode)
extraPLLFlags);
// Power on Panel
addr_t panelControl = INTEL_PANEL_CONTROL;
addr_t panelStatus = INTEL_PANEL_STATUS;
if (gInfo->shared_info->device_type.HasPlatformControlHub()) {
panelControl = PCH_PANEL_CONTROL;
panelStatus = PCH_PANEL_STATUS;
}
write32(panelControl, read32(panelControl) | PANEL_CONTROL_POWER_TARGET_ON);
read32(panelControl);
// TODO: A wait_for power on status to be set would be better here
spin(750);
if ((read32(panelStatus) & PANEL_STATUS_POWER_ON) == 0)
ERROR("%s: %s didn't power on in 750ms!\n", __func__, PortName());
if (!wait_for_set(panelStatus, PANEL_STATUS_POWER_ON, 1000))
ERROR("%s: %s didn't power on within 1000ms!\n", __func__, PortName());
// Program target display mode
fDisplayPipe->Enable(target, _PortRegister());