// 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 (INTEL_INFO(i915)->display.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); }