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// SPDX-License-Identifier: MIT
/*
* Copyright © 2022 Intel Corporation
*/
#include "i915_drv.h"
#include "intel_de.h"
#include "intel_display.h"
#include "intel_hti.h"
#include "intel_hti_regs.h"
void intel_hti_init(struct drm_i915_private *i915)
{
/*
* If the platform has HTI, we need to find out whether it has reserved
* any display resources before we create our display outputs.
*/
if (DISPLAY_INFO(i915)->has_hti)
i915->display.hti.state = intel_de_read(i915, HDPORT_STATE);
}
bool intel_hti_uses_phy(struct drm_i915_private *i915, enum phy phy)
{
if (drm_WARN_ON(&i915->drm, phy == PHY_NONE))
return false;
return i915->display.hti.state & HDPORT_ENABLED &&
i915->display.hti.state & HDPORT_DDI_USED(phy);
}
u32 intel_hti_dpll_mask(struct drm_i915_private *i915)
{
if (!(i915->display.hti.state & HDPORT_ENABLED))
return 0;
/*
* Note: This is subtle. The values must coincide with what's defined
* for the platform.
*/
return REG_FIELD_GET(HDPORT_DPLL_USED_MASK, i915->display.hti.state);
}
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